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2010-06-17 Zoltan Varga <vargaz@gmail.com>
[mono.git] / mono / mini / aot-compiler.c
blob01e0eb95a3c6f5581ab46203a0ce817d29b27c33
1 /*
2 * aot-compiler.c: mono Ahead of Time compiler
3 *
4 * Author:
5 * Dietmar Maurer (dietmar@ximian.com)
6 * Zoltan Varga (vargaz@gmail.com)
7 *
8 * (C) 2002 Ximian, Inc.
9 */
10
11 /* Remaining AOT-only work:
12 * - optimize the trampolines, generate more code in the arch files.
13 * - make things more consistent with how elf works, for example, use ELF
14 * relocations.
15 * Remaining generics sharing work:
16 * - optimize the size of the data which is encoded.
17 * - optimize the runtime loading of data:
18 * - the trampoline code calls mono_jit_info_table_find () to find the rgctx,
19 * which loads the debugging+exception handling info for the method. This is a
20 * huge waste of time and code, since the rgctx structure is currently empty.
21 * - every shared method has a MonoGenericJitInfo structure which is only really
22 * used for handling catch clauses with open types, not a very common use case.
23 */
24 #include "config.h"
25 #include <sys/types.h>
26 #ifdef HAVE_UNISTD_H
27 #include <unistd.h>
28 #endif
29 #ifdef HAVE_STDINT_H
30 #include <stdint.h>
31 #endif
32 #include <fcntl.h>
33 #include <ctype.h>
34 #include <string.h>
35 #ifndef HOST_WIN32
36 #include <sys/time.h>
37 #else
38 #include <winsock2.h>
39 #include <windows.h>
40 #endif
41
42 #include <errno.h>
43 #include <sys/stat.h>
44
45
46 #include <mono/metadata/tabledefs.h>
47 #include <mono/metadata/class.h>
48 #include <mono/metadata/object.h>
49 #include <mono/metadata/tokentype.h>
50 #include <mono/metadata/appdomain.h>
51 #include <mono/metadata/debug-helpers.h>
52 #include <mono/metadata/assembly.h>
53 #include <mono/metadata/metadata-internals.h>
54 #include <mono/metadata/marshal.h>
55 #include <mono/metadata/gc-internal.h>
56 #include <mono/metadata/monitor.h>
57 #include <mono/metadata/mempool-internals.h>
58 #include <mono/metadata/mono-endian.h>
59 #include <mono/metadata/threads-types.h>
60 #include <mono/utils/mono-logger-internal.h>
61 #include <mono/utils/mono-compiler.h>
62 #include <mono/utils/mono-time.h>
63 #include <mono/utils/mono-mmap.h>
64
65 #include "mini.h"
66 #include "image-writer.h"
67 #include "dwarfwriter.h"
68
69 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
70
71 #if defined(__linux__)
72 #define RODATA_SECT ".rodata"
73 #else
74 #define RODATA_SECT ".text"
75 #endif
76
77 #define TV_DECLARE(name) gint64 name
78 #define TV_GETTIME(tv) tv = mono_100ns_ticks ()
79 #define TV_ELAPSED(start,end) (((end) - (start)) / 10)
80
81 #ifdef TARGET_WIN32
82 #define SHARED_EXT ".dll"
83 #elif defined(__ppc__) && defined(__MACH__)
84 #define SHARED_EXT ".dylib"
85 #else
86 #define SHARED_EXT ".so"
87 #endif
88
89 #define ALIGN_TO(val,align) ((((guint64)val) + ((align) - 1)) & ~((align) - 1))
90 #define ALIGN_PTR_TO(ptr,align) (gpointer)((((gssize)(ptr)) + (align - 1)) & (~(align - 1)))
91 #define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
92
93 typedef struct MonoAotOptions {
94 char *outfile;
95 gboolean save_temps;
96 gboolean write_symbols;
97 gboolean metadata_only;
98 gboolean bind_to_runtime_version;
99 gboolean full_aot;
100 gboolean no_dlsym;
101 gboolean static_link;
102 gboolean asm_only;
103 gboolean asm_writer;
104 gboolean nodebug;
105 gboolean soft_debug;
106 int nthreads;
107 int ntrampolines;
108 int nrgctx_trampolines;
109 int nimt_trampolines;
110 gboolean print_skipped_methods;
111 gboolean stats;
112 char *tool_prefix;
113 gboolean autoreg;
114 } MonoAotOptions;
115
116 typedef struct MonoAotStats {
117 int ccount, mcount, lmfcount, abscount, gcount, ocount, genericcount;
118 int code_size, info_size, ex_info_size, unwind_info_size, got_size, class_info_size, got_info_size;
119 int methods_without_got_slots, direct_calls, all_calls, llvm_count;
120 int got_slots, offsets_size;
121 int got_slot_types [MONO_PATCH_INFO_NONE];
122 int jit_time, gen_time, link_time;
123 } MonoAotStats;
124
125 typedef struct MonoAotCompile {
126 MonoImage *image;
127 GPtrArray *methods;
128 GHashTable *method_indexes;
129 GHashTable *method_depth;
130 MonoCompile **cfgs;
131 int cfgs_size;
132 GHashTable *patch_to_plt_entry;
133 GHashTable *plt_offset_to_entry;
134 GHashTable *patch_to_got_offset;
135 GHashTable **patch_to_got_offset_by_type;
136 GPtrArray *got_patches;
137 GHashTable *image_hash;
138 GHashTable *method_to_cfg;
139 GHashTable *token_info_hash;
140 GPtrArray *extra_methods;
141 GPtrArray *image_table;
142 GPtrArray *globals;
143 GList *method_order;
144 guint32 *plt_got_info_offsets;
145 guint32 got_offset, plt_offset, plt_got_offset_base;
146 guint32 final_got_size;
147 /* Number of GOT entries reserved for trampolines */
148 guint32 num_trampoline_got_entries;
149
150 guint32 num_trampolines [MONO_AOT_TRAMP_NUM];
151 guint32 trampoline_got_offset_base [MONO_AOT_TRAMP_NUM];
152 guint32 trampoline_size [MONO_AOT_TRAMP_NUM];
153
154 MonoAotOptions aot_opts;
155 guint32 nmethods;
156 guint32 opts;
157 MonoMemPool *mempool;
158 MonoAotStats stats;
159 int method_index;
160 char *static_linking_symbol;
161 CRITICAL_SECTION mutex;
162 gboolean use_bin_writer;
163 MonoImageWriter *w;
164 MonoDwarfWriter *dwarf;
165 FILE *fp;
166 char *tmpfname;
167 GSList *cie_program;
168 GHashTable *unwind_info_offsets;
169 GPtrArray *unwind_ops;
170 guint32 unwind_info_offset;
171 char *got_symbol_base;
172 char *got_symbol;
173 char *plt_symbol;
174 GHashTable *method_label_hash;
175 const char *temp_prefix;
176 const char *llvm_label_prefix;
177 guint32 label_generator;
178 gboolean llvm;
179 MonoAotFileFlags flags;
180 MonoDynamicStream blob;
181 } MonoAotCompile;
182
183 typedef struct {
184 int plt_offset;
185 char *symbol;
186 MonoJumpInfo *ji;
187 } MonoPltEntry;
188
189 #define mono_acfg_lock(acfg) EnterCriticalSection (&((acfg)->mutex))
190 #define mono_acfg_unlock(acfg) LeaveCriticalSection (&((acfg)->mutex))
191
192 /* This points to the current acfg in LLVM mode */
193 static MonoAotCompile *llvm_acfg;
194
195 #ifdef HAVE_ARRAY_ELEM_INIT
196 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
197 #define MSGSTRFIELD1(line) str##line
198 static const struct msgstr_t {
199 #define PATCH_INFO(a,b) char MSGSTRFIELD(__LINE__) [sizeof (b)];
200 #include "patch-info.h"
201 #undef PATCH_INFO
202 } opstr = {
203 #define PATCH_INFO(a,b) b,
204 #include "patch-info.h"
205 #undef PATCH_INFO
206 };
207 static const gint16 opidx [] = {
208 #define PATCH_INFO(a,b) [MONO_PATCH_INFO_ ## a] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
209 #include "patch-info.h"
210 #undef PATCH_INFO
211 };
212
213 static G_GNUC_UNUSED const char*
214 get_patch_name (int info)
215 {
216 return (const char*)&opstr + opidx [info];
217 }
218
219 #else
220 #define PATCH_INFO(a,b) b,
221 static const char* const
222 patch_types [MONO_PATCH_INFO_NUM + 1] = {
223 #include "patch-info.h"
224 NULL
225 };
226
227 static G_GNUC_UNUSED const char*
228 get_patch_name (int info)
229 {
230 return patch_types [info];
231 }
232
233 #endif
234
235 /* Wrappers around the image writer functions */
236
237 static inline void
238 emit_section_change (MonoAotCompile *acfg, const char *section_name, int subsection_index)
239 {
240 img_writer_emit_section_change (acfg->w, section_name, subsection_index);
241 }
242
243 static inline void
244 emit_push_section (MonoAotCompile *acfg, const char *section_name, int subsection)
245 {
246 img_writer_emit_push_section (acfg->w, section_name, subsection);
247 }
248
249 static inline void
250 emit_pop_section (MonoAotCompile *acfg)
251 {
252 img_writer_emit_pop_section (acfg->w);
253 }
254
255 static inline void
256 emit_local_symbol (MonoAotCompile *acfg, const char *name, const char *end_label, gboolean func)
257 {
258 img_writer_emit_local_symbol (acfg->w, name, end_label, func);
259 }
260
261 static inline void
262 emit_label (MonoAotCompile *acfg, const char *name)
263 {
264 img_writer_emit_label (acfg->w, name);
265 }
266
267 static inline void
268 emit_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
269 {
270 img_writer_emit_bytes (acfg->w, buf, size);
271 }
272
273 static inline void
274 emit_string (MonoAotCompile *acfg, const char *value)
275 {
276 img_writer_emit_string (acfg->w, value);
277 }
278
279 static inline void
280 emit_line (MonoAotCompile *acfg)
281 {
282 img_writer_emit_line (acfg->w);
283 }
284
285 static inline void
286 emit_alignment (MonoAotCompile *acfg, int size)
287 {
288 img_writer_emit_alignment (acfg->w, size);
289 }
290
291 static inline void
292 emit_pointer_unaligned (MonoAotCompile *acfg, const char *target)
293 {
294 img_writer_emit_pointer_unaligned (acfg->w, target);
295 }
296
297 static inline void
298 emit_pointer (MonoAotCompile *acfg, const char *target)
299 {
300 img_writer_emit_pointer (acfg->w, target);
301 }
302
303 static inline void
304 emit_int16 (MonoAotCompile *acfg, int value)
305 {
306 img_writer_emit_int16 (acfg->w, value);
307 }
308
309 static inline void
310 emit_int32 (MonoAotCompile *acfg, int value)
311 {
312 img_writer_emit_int32 (acfg->w, value);
313 }
314
315 static inline void
316 emit_symbol_diff (MonoAotCompile *acfg, const char *end, const char* start, int offset)
317 {
318 img_writer_emit_symbol_diff (acfg->w, end, start, offset);
319 }
320
321 static inline void
322 emit_zero_bytes (MonoAotCompile *acfg, int num)
323 {
324 img_writer_emit_zero_bytes (acfg->w, num);
325 }
326
327 static inline void
328 emit_byte (MonoAotCompile *acfg, guint8 val)
329 {
330 img_writer_emit_byte (acfg->w, val);
331 }
332
333 static G_GNUC_UNUSED void
334 emit_global_inner (MonoAotCompile *acfg, const char *name, gboolean func)
335 {
336 img_writer_emit_global (acfg->w, name, func);
337 }
338
339 static void
340 emit_global (MonoAotCompile *acfg, const char *name, gboolean func)
341 {
342 if (acfg->aot_opts.no_dlsym) {
343 g_ptr_array_add (acfg->globals, g_strdup (name));
344 img_writer_emit_local_symbol (acfg->w, name, NULL, func);
345 } else {
346 img_writer_emit_global (acfg->w, name, func);
347 }
348 }
349
350 static void
351 emit_symbol_size (MonoAotCompile *acfg, const char *name, const char *end_label)
352 {
353 img_writer_emit_symbol_size (acfg->w, name, end_label);
354 }
355
356 static void
357 emit_string_symbol (MonoAotCompile *acfg, const char *name, const char *value)
358 {
359 img_writer_emit_section_change (acfg->w, RODATA_SECT, 1);
360 emit_global (acfg, name, FALSE);
361 img_writer_emit_label (acfg->w, name);
362 img_writer_emit_string (acfg->w, value);
363 }
364
365 static G_GNUC_UNUSED void
366 emit_uleb128 (MonoAotCompile *acfg, guint32 value)
367 {
368 do {
369 guint8 b = value & 0x7f;
370 value >>= 7;
371 if (value != 0) /* more bytes to come */
372 b |= 0x80;
373 emit_byte (acfg, b);
374 } while (value);
375 }
376
377 static G_GNUC_UNUSED void
378 emit_sleb128 (MonoAotCompile *acfg, gint64 value)
379 {
380 gboolean more = 1;
381 gboolean negative = (value < 0);
382 guint32 size = 64;
383 guint8 byte;
384
385 while (more) {
386 byte = value & 0x7f;
387 value >>= 7;
388 /* the following is unnecessary if the
389 * implementation of >>= uses an arithmetic rather
390 * than logical shift for a signed left operand
391 */
392 if (negative)
393 /* sign extend */
394 value |= - ((gint64)1 <<(size - 7));
395 /* sign bit of byte is second high order bit (0x40) */
396 if ((value == 0 && !(byte & 0x40)) ||
397 (value == -1 && (byte & 0x40)))
398 more = 0;
399 else
400 byte |= 0x80;
401 emit_byte (acfg, byte);
402 }
403 }
404
405 static G_GNUC_UNUSED void
406 encode_uleb128 (guint32 value, guint8 *buf, guint8 **endbuf)
407 {
408 guint8 *p = buf;
409
410 do {
411 guint8 b = value & 0x7f;
412 value >>= 7;
413 if (value != 0) /* more bytes to come */
414 b |= 0x80;
415 *p ++ = b;
416 } while (value);
417
418 *endbuf = p;
419 }
420
421 static G_GNUC_UNUSED void
422 encode_sleb128 (gint32 value, guint8 *buf, guint8 **endbuf)
423 {
424 gboolean more = 1;
425 gboolean negative = (value < 0);
426 guint32 size = 32;
427 guint8 byte;
428 guint8 *p = buf;
429
430 while (more) {
431 byte = value & 0x7f;
432 value >>= 7;
433 /* the following is unnecessary if the
434 * implementation of >>= uses an arithmetic rather
435 * than logical shift for a signed left operand
436 */
437 if (negative)
438 /* sign extend */
439 value |= - (1 <<(size - 7));
440 /* sign bit of byte is second high order bit (0x40) */
441 if ((value == 0 && !(byte & 0x40)) ||
442 (value == -1 && (byte & 0x40)))
443 more = 0;
444 else
445 byte |= 0x80;
446 *p ++= byte;
447 }
448
449 *endbuf = p;
450 }
451
452 /* ARCHITECTURE SPECIFIC CODE */
453
454 #if defined(TARGET_X86) || defined(TARGET_AMD64) || defined(TARGET_ARM) || defined(TARGET_POWERPC)
455 #define EMIT_DWARF_INFO 1
456 #endif
457
458 #if defined(TARGET_ARM)
459 #define AOT_FUNC_ALIGNMENT 4
460 #else
461 #define AOT_FUNC_ALIGNMENT 16
462 #endif
463
464 #if defined(TARGET_POWERPC64) && !defined(__mono_ilp32__)
465 #define PPC_LD_OP "ld"
466 #define PPC_LDX_OP "ldx"
467 #else
468 #define PPC_LD_OP "lwz"
469 #define PPC_LDX_OP "lwzx"
470 #endif
471
472 //#define TARGET_ARM
473
474 #ifdef TARGET_ARM
475 #define LLVM_LABEL_PREFIX "_"
476 #else
477 #define LLVM_LABEL_PREFIX ""
478 #endif
479
480 #ifdef TARGET_ARM
481 /* iphone */
482 #define LLC_TARGET_ARGS "-march=arm -mattr=+v6 -mtriple=arm-apple-darwin"
483 /* ELF */
484 //#define LLC_TARGET_ARGS "-march=arm -mtriple=arm-linux-gnueabi -soft-float"
485 #else
486 #define LLC_TARGET_ARGS ""
487 #endif
488
489 /*
490 * arch_emit_direct_call:
491 *
492 * Emit a direct call to the symbol TARGET. CALL_SIZE is set to the size of the
493 * calling code.
494 */
495 static void
496 arch_emit_direct_call (MonoAotCompile *acfg, const char *target, int *call_size)
497 {
498 #if defined(TARGET_X86) || defined(TARGET_AMD64)
499 /* Need to make sure this is exactly 5 bytes long */
500 emit_byte (acfg, '\xe8');
501 emit_symbol_diff (acfg, target, ".", -4);
502 *call_size = 5;
503 #elif defined(TARGET_ARM)
504 if (acfg->use_bin_writer) {
505 guint8 buf [4];
506 guint8 *code;
507
508 code = buf;
509 ARM_BL (code, 0);
510
511 img_writer_emit_reloc (acfg->w, R_ARM_CALL, target, -8);
512 emit_bytes (acfg, buf, 4);
513 } else {
514 img_writer_emit_unset_mode (acfg->w);
515 fprintf (acfg->fp, "bl %s\n", target);
516 }
517 *call_size = 4;
518 #elif defined(TARGET_POWERPC)
519 if (acfg->use_bin_writer) {
520 g_assert_not_reached ();
521 } else {
522 img_writer_emit_unset_mode (acfg->w);
523 fprintf (acfg->fp, "bl %s\n", target);
524 *call_size = 4;
525 }
526 #else
527 g_assert_not_reached ();
528 #endif
529 }
530
531 /*
532 * PPC32 design:
533 * - we use an approach similar to the x86 abi: reserve a register (r30) to hold
534 * the GOT pointer.
535 * - The full-aot trampolines need access to the GOT of mscorlib, so we store
536 * in in the 2. slot of every GOT, and require every method to place the GOT
537 * address in r30, even when it doesn't access the GOT otherwise. This way,
538 * the trampolines can compute the mscorlib GOT address by loading 4(r30).
539 */
540
541 /*
542 * PPC64 design:
543 * PPC64 uses function descriptors which greatly complicate all code, since
544 * these are used very inconsistently in the runtime. Some functions like
545 * mono_compile_method () return ftn descriptors, while others like the
546 * trampoline creation functions do not.
547 * We assume that all GOT slots contain function descriptors, and create
548 * descriptors in aot-runtime.c when needed.
549 * The ppc64 abi uses r2 to hold the address of the TOC/GOT, which is loaded
550 * from function descriptors, we could do the same, but it would require
551 * rewriting all the ppc/aot code to handle function descriptors properly.
552 * So instead, we use the same approach as on PPC32.
553 * This is a horrible mess, but fixing it would probably lead to an even bigger
554 * one.
555 */
556
557 /*
558 * X86 design:
559 * - similar to the PPC32 design, we reserve EBX to hold the GOT pointer.
560 */
561
562 #ifdef MONO_ARCH_AOT_SUPPORTED
563 /*
564 * arch_emit_got_offset:
565 *
566 * The memory pointed to by CODE should hold native code for computing the GOT
567 * address. Emit this code while patching it with the offset between code and
568 * the GOT. CODE_SIZE is set to the number of bytes emitted.
569 */
570 static void
571 arch_emit_got_offset (MonoAotCompile *acfg, guint8 *code, int *code_size)
572 {
573 #if defined(TARGET_POWERPC64)
574 g_assert (!acfg->use_bin_writer);
575 img_writer_emit_unset_mode (acfg->w);
576 /*
577 * The ppc32 code doesn't seem to work on ppc64, the assembler complains about
578 * unsupported relocations. So we store the got address into the .Lgot_addr
579 * symbol which is in the text segment, compute its address, and load it.
580 */
581 fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
582 fprintf (acfg->fp, "lis 0, (.Lgot_addr + 4 - .L%d)@h\n", acfg->label_generator);
583 fprintf (acfg->fp, "ori 0, 0, (.Lgot_addr + 4 - .L%d)@l\n", acfg->label_generator);
584 fprintf (acfg->fp, "add 30, 30, 0\n");
585 fprintf (acfg->fp, "%s 30, 0(30)\n", PPC_LD_OP);
586 acfg->label_generator ++;
587 *code_size = 16;
588 #elif defined(TARGET_POWERPC)
589 g_assert (!acfg->use_bin_writer);
590 img_writer_emit_unset_mode (acfg->w);
591 fprintf (acfg->fp, ".L%d:\n", acfg->label_generator);
592 fprintf (acfg->fp, "lis 0, (%s + 4 - .L%d)@h\n", acfg->got_symbol, acfg->label_generator);
593 fprintf (acfg->fp, "ori 0, 0, (%s + 4 - .L%d)@l\n", acfg->got_symbol, acfg->label_generator);
594 acfg->label_generator ++;
595 *code_size = 8;
596 #else
597 guint32 offset = mono_arch_get_patch_offset (code);
598 emit_bytes (acfg, code, offset);
599 emit_symbol_diff (acfg, acfg->got_symbol, ".", offset);
600
601 *code_size = offset + 4;
602 #endif
603 }
604
605 /*
606 * arch_emit_got_access:
607 *
608 * The memory pointed to by CODE should hold native code for loading a GOT
609 * slot. Emit this code while patching it so it accesses the GOT slot GOT_SLOT.
610 * CODE_SIZE is set to the number of bytes emitted.
611 */
612 static void
613 arch_emit_got_access (MonoAotCompile *acfg, guint8 *code, int got_slot, int *code_size)
614 {
615 /* Emit beginning of instruction */
616 emit_bytes (acfg, code, mono_arch_get_patch_offset (code));
617
618 /* Emit the offset */
619 #ifdef TARGET_AMD64
620 emit_symbol_diff (acfg, acfg->got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer)) - 4));
621 *code_size = mono_arch_get_patch_offset (code) + 4;
622 #elif defined(TARGET_X86)
623 emit_int32 (acfg, (unsigned int) ((got_slot * sizeof (gpointer))));
624 *code_size = mono_arch_get_patch_offset (code) + 4;
625 #elif defined(TARGET_ARM)
626 emit_symbol_diff (acfg, acfg->got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
627 *code_size = mono_arch_get_patch_offset (code) + 4;
628 #elif defined(TARGET_POWERPC)
629 {
630 guint8 buf [32];
631 guint8 *code;
632
633 code = buf;
634 ppc_load32 (code, ppc_r0, got_slot * sizeof (gpointer));
635 g_assert (code - buf == 8);
636 emit_bytes (acfg, buf, code - buf);
637 *code_size = code - buf;
638 }
639 #else
640 g_assert_not_reached ();
641 #endif
642 }
643
644 #endif
645
646 /*
647 * arch_emit_plt_entry:
648 *
649 * Emit code for the PLT entry with index INDEX.
650 */
651 static void
652 arch_emit_plt_entry (MonoAotCompile *acfg, int index)
653 {
654 #if defined(TARGET_X86)
655 guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
656
657 /* jmp *<offset>(%ebx) */
658 emit_byte (acfg, 0xff);
659 emit_byte (acfg, 0xa3);
660 emit_int32 (acfg, offset);
661 /* Used by mono_aot_get_plt_info_offset */
662 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
663 #elif defined(TARGET_AMD64)
664 /*
665 * We can't emit jumps because they are 32 bits only so they can't be patched.
666 * So we make indirect calls through GOT entries which are patched by the AOT
667 * loader to point to .Lpd entries.
668 */
669 /* jmpq *<offset>(%rip) */
670 emit_byte (acfg, '\xff');
671 emit_byte (acfg, '\x25');
672 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) -4);
673 /* Used by mono_aot_get_plt_info_offset */
674 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
675 #elif defined(TARGET_ARM)
676 guint8 buf [256];
677 guint8 *code;
678
679 /* FIXME:
680 * - optimize OP_AOTCONST implementation
681 * - optimize the PLT entries
682 * - optimize SWITCH AOT implementation
683 */
684 code = buf;
685 if (acfg->use_bin_writer && FALSE) {
686 /* FIXME: mono_arch_patch_plt_entry () needs to decode this */
687 /* We only emit 1 relocation since we implement it ourselves anyway */
688 img_writer_emit_reloc (acfg->w, R_ARM_ALU_PC_G0_NC, acfg->got_symbol, ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) - 8);
689 /* FIXME: A 2 instruction encoding is sufficient in most cases */
690 ARM_ADD_REG_IMM (code, ARMREG_IP, ARMREG_PC, 0, 0);
691 ARM_ADD_REG_IMM (code, ARMREG_IP, ARMREG_IP, 0, 0);
692 ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, 0);
693 emit_bytes (acfg, buf, code - buf);
694 /* Used by mono_aot_get_plt_info_offset */
695 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
696 } else {
697 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 0);
698 ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
699 emit_bytes (acfg, buf, code - buf);
700 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) - 4);
701 /* Used by mono_aot_get_plt_info_offset */
702 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
703 }
704 /*
705 * The plt_got_info_offset is computed automatically by
706 * mono_aot_get_plt_info_offset (), so no need to save it here.
707 */
708 #elif defined(TARGET_POWERPC)
709 guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
710
711 /* The GOT address is guaranteed to be in r30 by OP_LOAD_GOTADDR */
712 g_assert (!acfg->use_bin_writer);
713 img_writer_emit_unset_mode (acfg->w);
714 fprintf (acfg->fp, "lis 11, %d@h\n", offset);
715 fprintf (acfg->fp, "ori 11, 11, %d@l\n", offset);
716 fprintf (acfg->fp, "add 11, 11, 30\n");
717 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
718 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
719 fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
720 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
721 #endif
722 fprintf (acfg->fp, "mtctr 11\n");
723 fprintf (acfg->fp, "bctr\n");
724 emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
725 #else
726 g_assert_not_reached ();
727 #endif
728 }
729
730 /*
731 * arch_emit_specific_trampoline:
732 *
733 * Emit code for a specific trampoline. OFFSET is the offset of the first of
734 * two GOT slots which contain the generic trampoline address and the trampoline
735 * argument. TRAMP_SIZE is set to the size of the emitted trampoline.
736 */
737 static void
738 arch_emit_specific_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
739 {
740 /*
741 * The trampolines created here are variations of the specific
742 * trampolines created in mono_arch_create_specific_trampoline (). The
743 * differences are:
744 * - the generic trampoline address is taken from a got slot.
745 * - the offset of the got slot where the trampoline argument is stored
746 * is embedded in the instruction stream, and the generic trampoline
747 * can load the argument by loading the offset, adding it to the
748 * address of the trampoline to get the address of the got slot, and
749 * loading the argument from there.
750 * - all the trampolines should be of the same length.
751 */
752 #if defined(TARGET_AMD64)
753 /* This should be exactly 16 bytes long */
754 *tramp_size = 16;
755 /* call *<offset>(%rip) */
756 emit_byte (acfg, '\x41');
757 emit_byte (acfg, '\xff');
758 emit_byte (acfg, '\x15');
759 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
760 /* This should be relative to the start of the trampoline */
761 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 19);
762 emit_zero_bytes (acfg, 5);
763 #elif defined(TARGET_ARM)
764 guint8 buf [128];
765 guint8 *code;
766
767 /* This should be exactly 20 bytes long */
768 *tramp_size = 20;
769 code = buf;
770 ARM_PUSH (code, 0x5fff);
771 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_PC, 4);
772 /* Load the value from the GOT */
773 ARM_LDR_REG_REG (code, ARMREG_R1, ARMREG_PC, ARMREG_R1);
774 /* Branch to it */
775 ARM_BLX_REG (code, ARMREG_R1);
776
777 g_assert (code - buf == 16);
778
779 /* Emit it */
780 emit_bytes (acfg, buf, code - buf);
781 /*
782 * Only one offset is needed, since the second one would be equal to the
783 * first one.
784 */
785 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 4);
786 //emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
787 #elif defined(TARGET_POWERPC)
788 guint8 buf [128];
789 guint8 *code;
790
791 *tramp_size = 4;
792 code = buf;
793
794 g_assert (!acfg->use_bin_writer);
795
796 /*
797 * PPC has no ip relative addressing, so we need to compute the address
798 * of the mscorlib got. That is slow and complex, so instead, we store it
799 * in the second got slot of every aot image. The caller already computed
800 * the address of its got and placed it into r30.
801 */
802 img_writer_emit_unset_mode (acfg->w);
803 /* Load mscorlib got address */
804 fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
805 /* Load generic trampoline address */
806 fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
807 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
808 fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
809 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
810 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
811 #endif
812 fprintf (acfg->fp, "mtctr 11\n");
813 /* Load trampoline argument */
814 /* On ppc, we pass it normally to the generic trampoline */
815 fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
816 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
817 fprintf (acfg->fp, "%s 0, 11, 0\n", PPC_LDX_OP);
818 /* Branch to generic trampoline */
819 fprintf (acfg->fp, "bctr\n");
820
821 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
822 *tramp_size = 10 * 4;
823 #else
824 *tramp_size = 9 * 4;
825 #endif
826 #elif defined(TARGET_X86)
827 guint8 buf [128];
828 guint8 *code;
829
830 /* Similar to the PPC code above */
831
832 /* FIXME: Could this clobber the register needed by get_vcall_slot () ? */
833
834 /* We clobber ECX, since EAX is used as MONO_ARCH_MONITOR_OBJECT_REG */
835 #ifdef MONO_ARCH_MONITOR_OBJECT_REG
836 g_assert (MONO_ARCH_MONITOR_OBJECT_REG != X86_ECX);
837 #endif
838
839 code = buf;
840 /* Load mscorlib got address */
841 x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
842 /* Push trampoline argument */
843 x86_push_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
844 /* Load generic trampoline address */
845 x86_mov_reg_membase (code, X86_ECX, X86_ECX, offset * sizeof (gpointer), 4);
846 /* Branch to generic trampoline */
847 x86_jump_reg (code, X86_ECX);
848
849 emit_bytes (acfg, buf, code - buf);
850
851 *tramp_size = 17;
852 g_assert (code - buf == *tramp_size);
853 #else
854 g_assert_not_reached ();
855 #endif
856 }
857
858 /*
859 * arch_emit_unbox_trampoline:
860 *
861 * Emit code for the unbox trampoline for METHOD used in the full-aot case.
862 * CALL_TARGET is the symbol pointing to the native code of METHOD.
863 */
864 static void
865 arch_emit_unbox_trampoline (MonoAotCompile *acfg, MonoMethod *method, MonoGenericSharingContext *gsctx, const char *call_target)
866 {
867 #if defined(TARGET_AMD64)
868 guint8 buf [32];
869 guint8 *code;
870 int this_reg;
871
872 this_reg = mono_arch_get_this_arg_reg (mono_method_signature (method), gsctx, NULL);
873 code = buf;
874 amd64_alu_reg_imm (code, X86_ADD, this_reg, sizeof (MonoObject));
875
876 emit_bytes (acfg, buf, code - buf);
877 /* jump <method> */
878 emit_byte (acfg, '\xe9');
879 emit_symbol_diff (acfg, call_target, ".", -4);
880 #elif defined(TARGET_X86)
881 guint8 buf [32];
882 guint8 *code;
883 int this_pos = 4;
884
885 if (MONO_TYPE_ISSTRUCT (mono_method_signature (method)->ret))
886 this_pos = 8;
887
888 code = buf;
889
890 x86_alu_membase_imm (code, X86_ADD, X86_ESP, this_pos, sizeof (MonoObject));
891
892 emit_bytes (acfg, buf, code - buf);
893
894 /* jump <method> */
895 emit_byte (acfg, '\xe9');
896 emit_symbol_diff (acfg, call_target, ".", -4);
897 #elif defined(TARGET_ARM)
898 guint8 buf [128];
899 guint8 *code;
900 int this_pos = 0;
901
902 code = buf;
903
904 if (MONO_TYPE_ISSTRUCT (mono_method_signature (method)->ret))
905 this_pos = 1;
906
907 ARM_ADD_REG_IMM8 (code, this_pos, this_pos, sizeof (MonoObject));
908
909 emit_bytes (acfg, buf, code - buf);
910 /* jump to method */
911 if (acfg->use_bin_writer) {
912 guint8 buf [4];
913 guint8 *code;
914
915 code = buf;
916 ARM_B (code, 0);
917
918 img_writer_emit_reloc (acfg->w, R_ARM_JUMP24, call_target, -8);
919 emit_bytes (acfg, buf, 4);
920 } else {
921 fprintf (acfg->fp, "\n\tb %s\n", call_target);
922 }
923 #elif defined(TARGET_POWERPC)
924 int this_pos = 3;
925
926 if (MONO_TYPE_ISSTRUCT (mono_method_signature (method)->ret))
927 this_pos = 4;
928
929 g_assert (!acfg->use_bin_writer);
930
931 fprintf (acfg->fp, "\n\taddi %d, %d, %d\n", this_pos, this_pos, (int)sizeof (MonoObject));
932 fprintf (acfg->fp, "\n\tb %s\n", call_target);
933 #else
934 g_assert_not_reached ();
935 #endif
936 }
937
938 /*
939 * arch_emit_static_rgctx_trampoline:
940 *
941 * Emit code for a static rgctx trampoline. OFFSET is the offset of the first of
942 * two GOT slots which contain the rgctx argument, and the method to jump to.
943 * TRAMP_SIZE is set to the size of the emitted trampoline.
944 * These kinds of trampolines cannot be enumerated statically, since there could
945 * be one trampoline per method instantiation, so we emit the same code for all
946 * trampolines, and parameterize them using two GOT slots.
947 */
948 static void
949 arch_emit_static_rgctx_trampoline (MonoAotCompile *acfg, int offset, int *tramp_size)
950 {
951 #if defined(TARGET_AMD64)
952 /* This should be exactly 13 bytes long */
953 *tramp_size = 13;
954
955 /* mov <OFFSET>(%rip), %r10 */
956 emit_byte (acfg, '\x4d');
957 emit_byte (acfg, '\x8b');
958 emit_byte (acfg, '\x15');
959 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
960
961 /* jmp *<offset>(%rip) */
962 emit_byte (acfg, '\xff');
963 emit_byte (acfg, '\x25');
964 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4);
965 #elif defined(TARGET_ARM)
966 guint8 buf [128];
967 guint8 *code;
968
969 /* This should be exactly 24 bytes long */
970 *tramp_size = 24;
971 code = buf;
972 /* Load rgctx value */
973 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 8);
974 ARM_LDR_REG_REG (code, MONO_ARCH_RGCTX_REG, ARMREG_PC, ARMREG_IP);
975 /* Load branch addr + branch */
976 ARM_LDR_IMM (code, ARMREG_IP, ARMREG_PC, 4);
977 ARM_LDR_REG_REG (code, ARMREG_PC, ARMREG_PC, ARMREG_IP);
978
979 g_assert (code - buf == 16);
980
981 /* Emit it */
982 emit_bytes (acfg, buf, code - buf);
983 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 8);
984 emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 4);
985 #elif defined(TARGET_POWERPC)
986 guint8 buf [128];
987 guint8 *code;
988
989 *tramp_size = 4;
990 code = buf;
991
992 g_assert (!acfg->use_bin_writer);
993
994 /*
995 * PPC has no ip relative addressing, so we need to compute the address
996 * of the mscorlib got. That is slow and complex, so instead, we store it
997 * in the second got slot of every aot image. The caller already computed
998 * the address of its got and placed it into r30.
999 */
1000 img_writer_emit_unset_mode (acfg->w);
1001 /* Load mscorlib got address */
1002 fprintf (acfg->fp, "%s 0, %d(30)\n", PPC_LD_OP, (int)sizeof (gpointer));
1003 /* Load rgctx */
1004 fprintf (acfg->fp, "lis 11, %d@h\n", (int)(offset * sizeof (gpointer)));
1005 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)(offset * sizeof (gpointer)));
1006 fprintf (acfg->fp, "%s %d, 11, 0\n", PPC_LDX_OP, MONO_ARCH_RGCTX_REG);
1007 /* Load target address */
1008 fprintf (acfg->fp, "lis 11, %d@h\n", (int)((offset + 1) * sizeof (gpointer)));
1009 fprintf (acfg->fp, "ori 11, 11, %d@l\n", (int)((offset + 1) * sizeof (gpointer)));
1010 fprintf (acfg->fp, "%s 11, 11, 0\n", PPC_LDX_OP);
1011 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1012 fprintf (acfg->fp, "%s 2, %d(11)\n", PPC_LD_OP, (int)sizeof (gpointer));
1013 fprintf (acfg->fp, "%s 11, 0(11)\n", PPC_LD_OP);
1014 #endif
1015 fprintf (acfg->fp, "mtctr 11\n");
1016 /* Branch to the target address */
1017 fprintf (acfg->fp, "bctr\n");
1018
1019 #ifdef PPC_USES_FUNCTION_DESCRIPTOR
1020 *tramp_size = 11 * 4;
1021 #else
1022 *tramp_size = 9 * 4;
1023 #endif
1024
1025 #elif defined(TARGET_X86)
1026 guint8 buf [128];
1027 guint8 *code;
1028
1029 /* Similar to the PPC code above */
1030
1031 g_assert (MONO_ARCH_RGCTX_REG != X86_ECX);
1032
1033 code = buf;
1034 /* Load mscorlib got address */
1035 x86_mov_reg_membase (code, X86_ECX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
1036 /* Load arg */
1037 x86_mov_reg_membase (code, MONO_ARCH_RGCTX_REG, X86_ECX, offset * sizeof (gpointer), 4);
1038 /* Branch to the target address */
1039 x86_jump_membase (code, X86_ECX, (offset + 1) * sizeof (gpointer));
1040
1041 emit_bytes (acfg, buf, code - buf);
1042
1043 *tramp_size = 15;
1044 g_assert (code - buf == *tramp_size);
1045 #else
1046 g_assert_not_reached ();
1047 #endif
1048 }
1049
1050 /*
1051 * arch_emit_imt_thunk:
1052 *
1053 * Emit an IMT thunk usable in full-aot mode. The thunk uses 1 got slot which
1054 * points to an array of pointer pairs. The pairs of the form [key, ptr], where
1055 * key is the IMT key, and ptr holds the address of a memory location holding
1056 * the address to branch to if the IMT arg matches the key. The array is
1057 * terminated by a pair whose key is NULL, and whose ptr is the address of the
1058 * fail_tramp.
1059 * TRAMP_SIZE is set to the size of the emitted trampoline.
1060 */
1061 static void
1062 arch_emit_imt_thunk (MonoAotCompile *acfg, int offset, int *tramp_size)
1063 {
1064 #if defined(TARGET_AMD64)
1065 guint8 *buf, *code;
1066 guint8 *labels [3];
1067
1068 code = buf = g_malloc (256);
1069
1070 /* FIXME: Optimize this, i.e. use binary search etc. */
1071 /* Maybe move the body into a separate function (slower, but much smaller) */
1072
1073 /* R10 is a free register */
1074
1075 labels [0] = code;
1076 amd64_alu_membase_imm (code, X86_CMP, AMD64_R10, 0, 0);
1077 labels [1] = code;
1078 amd64_branch8 (code, X86_CC_Z, FALSE, 0);
1079
1080 /* Check key */
1081 amd64_alu_membase_reg (code, X86_CMP, AMD64_R10, 0, MONO_ARCH_IMT_REG);
1082 labels [2] = code;
1083 amd64_branch8 (code, X86_CC_Z, FALSE, 0);
1084
1085 /* Loop footer */
1086 amd64_alu_reg_imm (code, X86_ADD, AMD64_R10, 2 * sizeof (gpointer));
1087 amd64_jump_code (code, labels [0]);
1088
1089 /* Match */
1090 mono_amd64_patch (labels [2], code);
1091 amd64_mov_reg_membase (code, AMD64_R10, AMD64_R10, sizeof (gpointer), 8);
1092 amd64_jump_membase (code, AMD64_R10, 0);
1093
1094 /* No match */
1095 /* FIXME: */
1096 mono_amd64_patch (labels [1], code);
1097 x86_breakpoint (code);
1098
1099 /* mov <OFFSET>(%rip), %r10 */
1100 emit_byte (acfg, '\x4d');
1101 emit_byte (acfg, '\x8b');
1102 emit_byte (acfg, '\x15');
1103 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4);
1104
1105 emit_bytes (acfg, buf, code - buf);
1106
1107 *tramp_size = code - buf + 7;
1108 #elif defined(TARGET_X86)
1109 guint8 *buf, *code;
1110 guint8 *labels [3];
1111
1112 code = buf = g_malloc (256);
1113
1114 /* Allocate a temporary stack slot */
1115 x86_push_reg (code, X86_EAX);
1116 /* Save EAX */
1117 x86_push_reg (code, X86_EAX);
1118
1119 /* Load mscorlib got address */
1120 x86_mov_reg_membase (code, X86_EAX, MONO_ARCH_GOT_REG, sizeof (gpointer), 4);
1121 /* Load arg */
1122 x86_mov_reg_membase (code, X86_EAX, X86_EAX, offset * sizeof (gpointer), 4);
1123
1124 labels [0] = code;
1125 x86_alu_membase_imm (code, X86_CMP, X86_EAX, 0, 0);
1126 labels [1] = code;
1127 x86_branch8 (code, X86_CC_Z, FALSE, 0);
1128
1129 /* Check key */
1130 x86_alu_membase_reg (code, X86_CMP, X86_EAX, 0, MONO_ARCH_IMT_REG);
1131 labels [2] = code;
1132 x86_branch8 (code, X86_CC_Z, FALSE, 0);
1133
1134 /* Loop footer */
1135 x86_alu_reg_imm (code, X86_ADD, X86_EAX, 2 * sizeof (gpointer));
1136 x86_jump_code (code, labels [0]);
1137
1138 /* Match */
1139 mono_x86_patch (labels [2], code);
1140 x86_mov_reg_membase (code, X86_EAX, X86_EAX, sizeof (gpointer), 4);
1141 x86_mov_reg_membase (code, X86_EAX, X86_EAX, 0, 4);
1142 /* Save the target address to the temporary stack location */
1143 x86_mov_membase_reg (code, X86_ESP, 4, X86_EAX, 4);
1144 /* Restore EAX */
1145 x86_pop_reg (code, X86_EAX);
1146 /* Jump to the target address */
1147 x86_ret (code);
1148
1149 /* No match */
1150 /* FIXME: */
1151 mono_x86_patch (labels [1], code);
1152 x86_breakpoint (code);
1153
1154 emit_bytes (acfg, buf, code - buf);
1155
1156 *tramp_size = code - buf;
1157 #elif defined(TARGET_ARM)
1158 guint8 buf [128];
1159 guint8 *code, *code2, *labels [16];
1160
1161 code = buf;
1162
1163 /* The IMT method is in v5 */
1164
1165 /* Need at least two free registers, plus a slot for storing the pc */
1166 ARM_PUSH (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_R2));
1167 labels [0] = code;
1168 /* Load the parameter from the GOT */
1169 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_PC, 0);
1170 ARM_LDR_REG_REG (code, ARMREG_R0, ARMREG_PC, ARMREG_R0);
1171
1172 labels [1] = code;
1173 ARM_LDR_IMM (code, ARMREG_R1, ARMREG_R0, 0);
1174 ARM_CMP_REG_REG (code, ARMREG_R1, ARMREG_V5);
1175 labels [2] = code;
1176 ARM_B_COND (code, ARMCOND_EQ, 0);
1177
1178 /* End-of-loop check */
1179 ARM_CMP_REG_IMM (code, ARMREG_R1, 0, 0);
1180 labels [3] = code;
1181 ARM_B_COND (code, ARMCOND_EQ, 0);
1182
1183 /* Loop footer */
1184 ARM_ADD_REG_IMM8 (code, ARMREG_R0, ARMREG_R0, sizeof (gpointer) * 2);
1185 labels [4] = code;
1186 ARM_B (code, 0);
1187 arm_patch (labels [4], labels [1]);
1188
1189 /* Match */
1190 arm_patch (labels [2], code);
1191 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 4);
1192 ARM_LDR_IMM (code, ARMREG_R0, ARMREG_R0, 0);
1193 /* Save it to the third stack slot */
1194 ARM_STR_IMM (code, ARMREG_R0, ARMREG_SP, 8);
1195 /* Restore the registers and branch */
1196 ARM_POP (code, (1 << ARMREG_R0)|(1 << ARMREG_R1)|(1 << ARMREG_PC));
1197
1198 /* No match */
1199 arm_patch (labels [3], code);
1200 ARM_DBRK (code);
1201
1202 /* Fixup offset */
1203 code2 = labels [0];
1204 ARM_LDR_IMM (code2, ARMREG_R0, ARMREG_PC, (code - (labels [0] + 8)));
1205
1206 emit_bytes (acfg, buf, code - buf);
1207 emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + (code - (labels [0] + 8)) - 4);
1208
1209 *tramp_size = code - buf + 4;
1210 #elif defined(TARGET_POWERPC)
1211 guint8 buf [128];
1212 guint8 *code, *labels [16];
1213
1214 code = buf;
1215
1216 /* Load the mscorlib got address */
1217 ppc_ldptr (code, ppc_r11, sizeof (gpointer), ppc_r30);
1218 /* Load the parameter from the GOT */
1219 ppc_load (code, ppc_r0, offset * sizeof (gpointer));
1220 ppc_ldptr_indexed (code, ppc_r11, ppc_r11, ppc_r0);
1221
1222 /* Load and check key */
1223 labels [1] = code;
1224 ppc_ldptr (code, ppc_r0, 0, ppc_r11);
1225 ppc_cmp (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, MONO_ARCH_IMT_REG);
1226 labels [2] = code;
1227 ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
1228
1229 /* End-of-loop check */
1230 ppc_cmpi (code, 0, sizeof (gpointer) == 8 ? 1 : 0, ppc_r0, 0);
1231 labels [3] = code;
1232 ppc_bc (code, PPC_BR_TRUE, PPC_BR_EQ, 0);
1233
1234 /* Loop footer */
1235 ppc_addi (code, ppc_r11, ppc_r11, 2 * sizeof (gpointer));
1236 labels [4] = code;
1237 ppc_b (code, 0);
1238 mono_ppc_patch (labels [4], labels [1]);
1239
1240 /* Match */
1241 mono_ppc_patch (labels [2], code);
1242 ppc_ldptr (code, ppc_r11, sizeof (gpointer), ppc_r11);
1243 /* r11 now contains the value of the vtable slot */
1244 /* this is not a function descriptor on ppc64 */
1245 ppc_ldptr (code, ppc_r11, 0, ppc_r11);
1246 ppc_mtctr (code, ppc_r11);
1247 ppc_bcctr (code, PPC_BR_ALWAYS, 0);
1248
1249 /* Fail */
1250 mono_ppc_patch (labels [3], code);
1251 /* FIXME: */
1252 ppc_break (code);
1253
1254 *tramp_size = code - buf;
1255
1256 emit_bytes (acfg, buf, code - buf);
1257 #else
1258 g_assert_not_reached ();
1259 #endif
1260 }
1261
1262 static void
1263 arch_emit_autoreg (MonoAotCompile *acfg, char *symbol)
1264 {
1265 #if defined(TARGET_POWERPC) && defined(__mono_ilp32__)
1266 /* Based on code generated by gcc */
1267 img_writer_emit_unset_mode (acfg->w);
1268
1269 fprintf (acfg->fp,
1270 #if defined(_MSC_VER) || defined(MONO_CROSS_COMPILE)
1271 ".section .ctors,\"aw\",@progbits\n"
1272 ".align 2\n"
1273 ".globl %s\n"
1274 ".long %s\n"
1275 ".section .opd,\"aw\"\n"
1276 ".align 2\n"
1277 "%s:\n"
1278 ".long .%s,.TOC.@tocbase32\n"
1279 ".size %s,.-%s\n"
1280 ".section .text\n"
1281 ".type .%s,@function\n"
1282 ".align 2\n"
1283 ".%s:\n", symbol, symbol, symbol, symbol, symbol, symbol, symbol, symbol);
1284 #else
1285 ".section .ctors,\"aw\",@progbits\n"
1286 ".align 2\n"
1287 ".globl %1$s\n"
1288 ".long %1$s\n"
1289 ".section .opd,\"aw\"\n"
1290 ".align 2\n"
1291 "%1$s:\n"
1292 ".long .%1$s,.TOC.@tocbase32\n"
1293 ".size %1$s,.-%1$s\n"
1294 ".section .text\n"
1295 ".type .%1$s,@function\n"
1296 ".align 2\n"
1297 ".%1$s:\n", symbol);
1298 #endif
1299
1300
1301 fprintf (acfg->fp,
1302 "stdu 1,-128(1)\n"
1303 "mflr 0\n"
1304 "std 31,120(1)\n"
1305 "std 0,144(1)\n"
1306
1307 ".Lautoreg:\n"
1308 "lis 3, .Lglobals@h\n"
1309 "ori 3, 3, .Lglobals@l\n"
1310 "bl .mono_aot_register_module\n"
1311 "ld 11,0(1)\n"
1312 "ld 0,16(11)\n"
1313 "mtlr 0\n"
1314 "ld 31,-8(11)\n"
1315 "mr 1,11\n"
1316 "blr\n"
1317 );
1318 #if defined(_MSC_VER) || defined(MONO_CROSS_COMPILE)
1319 fprintf (acfg->fp,
1320 ".size .%s,.-.%s\n", symbol, symbol);
1321 #else
1322 fprintf (acfg->fp,
1323 ".size .%1$s,.-.%1$s\n", symbol);
1324 #endif
1325 #else
1326 #endif
1327 }
1328
1329 /* END OF ARCH SPECIFIC CODE */
1330
1331 static guint32
1332 mono_get_field_token (MonoClassField *field)
1333 {
1334 MonoClass *klass = field->parent;
1335 int i;
1336
1337 for (i = 0; i < klass->field.count; ++i) {
1338 if (field == &klass->fields [i])
1339 return MONO_TOKEN_FIELD_DEF | (klass->field.first + 1 + i);
1340 }
1341
1342 g_assert_not_reached ();
1343 return 0;
1344 }
1345
1346 static inline void
1347 encode_value (gint32 value, guint8 *buf, guint8 **endbuf)
1348 {
1349 guint8 *p = buf;
1350
1351 //printf ("ENCODE: %d 0x%x.\n", value, value);
1352
1353 /*
1354 * Same encoding as the one used in the metadata, extended to handle values
1355 * greater than 0x1fffffff.
1356 */
1357 if ((value >= 0) && (value <= 127))
1358 *p++ = value;
1359 else if ((value >= 0) && (value <= 16383)) {
1360 p [0] = 0x80 | (value >> 8);
1361 p [1] = value & 0xff;
1362 p += 2;
1363 } else if ((value >= 0) && (value <= 0x1fffffff)) {
1364 p [0] = (value >> 24) | 0xc0;
1365 p [1] = (value >> 16) & 0xff;
1366 p [2] = (value >> 8) & 0xff;
1367 p [3] = value & 0xff;
1368 p += 4;
1369 }
1370 else {
1371 p [0] = 0xff;
1372 p [1] = (value >> 24) & 0xff;
1373 p [2] = (value >> 16) & 0xff;
1374 p [3] = (value >> 8) & 0xff;
1375 p [4] = value & 0xff;
1376 p += 5;
1377 }
1378 if (endbuf)
1379 *endbuf = p;
1380 }
1381
1382 static void
1383 stream_init (MonoDynamicStream *sh)
1384 {
1385 sh->index = 0;
1386 sh->alloc_size = 4096;
1387 sh->data = g_malloc (4096);
1388
1389 /* So offsets are > 0 */
1390 sh->index ++;
1391 }
1392
1393 static void
1394 make_room_in_stream (MonoDynamicStream *stream, int size)
1395 {
1396 if (size <= stream->alloc_size)
1397 return;
1398
1399 while (stream->alloc_size <= size) {
1400 if (stream->alloc_size < 4096)
1401 stream->alloc_size = 4096;
1402 else
1403 stream->alloc_size *= 2;
1404 }
1405
1406 stream->data = g_realloc (stream->data, stream->alloc_size);
1407 }
1408
1409 static guint32
1410 add_stream_data (MonoDynamicStream *stream, const char *data, guint32 len)
1411 {
1412 guint32 idx;
1413
1414 make_room_in_stream (stream, stream->index + len);
1415 memcpy (stream->data + stream->index, data, len);
1416 idx = stream->index;
1417 stream->index += len;
1418 return idx;
1419 }
1420
1421 /*
1422 * add_to_blob:
1423 *
1424 * Add data to the binary blob inside the aot image. Returns the offset inside the
1425 * blob where the data was stored.
1426 */
1427 static guint32
1428 add_to_blob (MonoAotCompile *acfg, guint8 *data, guint32 data_len)
1429 {
1430 if (acfg->blob.alloc_size == 0)
1431 stream_init (&acfg->blob);
1432
1433 return add_stream_data (&acfg->blob, (char*)data, data_len);
1434 }
1435
1436 /*
1437 * emit_offset_table:
1438 *
1439 * Emit a table of increasing offsets in a compact form using differential encoding.
1440 * There is an index entry for each GROUP_SIZE number of entries. The greater the
1441 * group size, the more compact the table becomes, but the slower it becomes to compute
1442 * a given entry. Returns the size of the table.
1443 */
1444 static guint32
1445 emit_offset_table (MonoAotCompile *acfg, int noffsets, int group_size, gint32 *offsets)
1446 {
1447 gint32 current_offset;
1448 int i, buf_size, ngroups, index_entry_size;
1449 guint8 *p, *buf;
1450 guint32 *index_offsets;
1451
1452 ngroups = (noffsets + (group_size - 1)) / group_size;
1453
1454 index_offsets = g_new0 (guint32, ngroups);
1455
1456 buf_size = noffsets * 4;
1457 p = buf = g_malloc0 (buf_size);
1458
1459 current_offset = 0;
1460 for (i = 0; i < noffsets; ++i) {
1461 //printf ("D: %d -> %d\n", i, offsets [i]);
1462 if ((i % group_size) == 0) {
1463 index_offsets [i / group_size] = p - buf;
1464 /* Emit the full value for these entries */
1465 encode_value (offsets [i], p, &p);
1466 } else {
1467 /* The offsets are allowed to be non-increasing */
1468 //g_assert (offsets [i] >= current_offset);
1469 encode_value (offsets [i] - current_offset, p, &p);
1470 }
1471 current_offset = offsets [i];
1472 }
1473
1474 if (ngroups && index_offsets [ngroups - 1] < 65000)
1475 index_entry_size = 2;
1476 else
1477 index_entry_size = 4;
1478
1479 /* Emit the header */
1480 emit_int32 (acfg, noffsets);
1481 emit_int32 (acfg, group_size);
1482 emit_int32 (acfg, ngroups);
1483 emit_int32 (acfg, index_entry_size);
1484
1485 /* Emit the index */
1486 for (i = 0; i < ngroups; ++i) {
1487 if (index_entry_size == 2)
1488 emit_int16 (acfg, index_offsets [i]);
1489 else
1490 emit_int32 (acfg, index_offsets [i]);
1491 }
1492
1493 /* Emit the data */
1494 emit_bytes (acfg, buf, p - buf);
1495
1496 return (int)(p - buf) + (ngroups * 4);
1497 }
1498
1499 static guint32
1500 get_image_index (MonoAotCompile *cfg, MonoImage *image)
1501 {
1502 guint32 index;
1503
1504 index = GPOINTER_TO_UINT (g_hash_table_lookup (cfg->image_hash, image));
1505 if (index)
1506 return index - 1;
1507 else {
1508 index = g_hash_table_size (cfg->image_hash);
1509 g_hash_table_insert (cfg->image_hash, image, GUINT_TO_POINTER (index + 1));
1510 g_ptr_array_add (cfg->image_table, image);
1511 return index;
1512 }
1513 }
1514
1515 static guint32
1516 find_typespec_for_class (MonoAotCompile *acfg, MonoClass *klass)
1517 {
1518 int i;
1519 MonoClass *k = NULL;
1520
1521 /* FIXME: Search referenced images as well */
1522 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
1523 k = mono_class_get_full (acfg->image, MONO_TOKEN_TYPE_SPEC | (i + 1), NULL);
1524 if (k == klass)
1525 break;
1526 }
1527
1528 if (i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows)
1529 return MONO_TOKEN_TYPE_SPEC | (i + 1);
1530 else
1531 return 0;
1532 }
1533
1534 static void
1535 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf);
1536
1537 /*
1538 * encode_klass_ref:
1539 *
1540 * Encode a reference to KLASS. We use our home-grown encoding instead of the
1541 * standard metadata encoding.
1542 */
1543 static void
1544 encode_klass_ref (MonoAotCompile *acfg, MonoClass *klass, guint8 *buf, guint8 **endbuf)
1545 {
1546 guint8 *p = buf;
1547
1548 if (klass->generic_class) {
1549 guint32 token;
1550 g_assert (klass->type_token);
1551
1552 /* Find a typespec for a class if possible */
1553 token = find_typespec_for_class (acfg, klass);
1554 if (token) {
1555 encode_value (token, p, &p);
1556 encode_value (get_image_index (acfg, acfg->image), p, &p);
1557 } else {
1558 MonoClass *gclass = klass->generic_class->container_class;
1559 MonoGenericInst *inst = klass->generic_class->context.class_inst;
1560 int i;
1561
1562 /* Encode it ourselves */
1563 /* Marker */
1564 encode_value (MONO_TOKEN_TYPE_SPEC, p, &p);
1565 encode_value (MONO_TYPE_GENERICINST, p, &p);
1566 encode_klass_ref (acfg, gclass, p, &p);
1567 encode_value (inst->type_argc, p, &p);
1568 for (i = 0; i < inst->type_argc; ++i)
1569 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1570 }
1571 } else if (klass->type_token) {
1572 g_assert (mono_metadata_token_code (klass->type_token) == MONO_TOKEN_TYPE_DEF);
1573 encode_value (klass->type_token - MONO_TOKEN_TYPE_DEF, p, &p);
1574 encode_value (get_image_index (acfg, klass->image), p, &p);
1575 } else if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR)) {
1576 MonoGenericContainer *container = mono_type_get_generic_param_owner (&klass->byval_arg);
1577 g_assert (container);
1578
1579 /* Marker */
1580 encode_value (MONO_TOKEN_TYPE_SPEC, p, &p);
1581 encode_value (klass->byval_arg.type, p, &p);
1582
1583 encode_value (mono_type_get_generic_param_num (&klass->byval_arg), p, &p);
1584
1585 encode_value (container->is_method, p, &p);
1586 if (container->is_method)
1587 encode_method_ref (acfg, container->owner.method, p, &p);
1588 else
1589 encode_klass_ref (acfg, container->owner.klass, p, &p);
1590 } else {
1591 /* Array class */
1592 g_assert (klass->rank > 0);
1593 encode_value (MONO_TOKEN_TYPE_DEF, p, &p);
1594 encode_value (get_image_index (acfg, klass->image), p, &p);
1595 encode_value (klass->rank, p, &p);
1596 encode_klass_ref (acfg, klass->element_class, p, &p);
1597 }
1598 *endbuf = p;
1599 }
1600
1601 static void
1602 encode_field_info (MonoAotCompile *cfg, MonoClassField *field, guint8 *buf, guint8 **endbuf)
1603 {
1604 guint32 token = mono_get_field_token (field);
1605 guint8 *p = buf;
1606
1607 encode_klass_ref (cfg, field->parent, p, &p);
1608 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_FIELD_DEF);
1609 encode_value (token - MONO_TOKEN_FIELD_DEF, p, &p);
1610 *endbuf = p;
1611 }
1612
1613 static void
1614 encode_generic_context (MonoAotCompile *acfg, MonoGenericContext *context, guint8 *buf, guint8 **endbuf)
1615 {
1616 guint8 *p = buf;
1617 int i;
1618 MonoGenericInst *inst;
1619
1620 /* Encode the context */
1621 inst = context->class_inst;
1622 encode_value (inst ? 1 : 0, p, &p);
1623 if (inst) {
1624 encode_value (inst->type_argc, p, &p);
1625 for (i = 0; i < inst->type_argc; ++i)
1626 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1627 }
1628 inst = context->method_inst;
1629 encode_value (inst ? 1 : 0, p, &p);
1630 if (inst) {
1631 encode_value (inst->type_argc, p, &p);
1632 for (i = 0; i < inst->type_argc; ++i)
1633 encode_klass_ref (acfg, mono_class_from_mono_type (inst->type_argv [i]), p, &p);
1634 }
1635
1636 *endbuf = p;
1637 }
1638
1639 #define MAX_IMAGE_INDEX 250
1640
1641 static void
1642 encode_method_ref (MonoAotCompile *acfg, MonoMethod *method, guint8 *buf, guint8 **endbuf)
1643 {
1644 guint32 image_index = get_image_index (acfg, method->klass->image);
1645 guint32 token = method->token;
1646 MonoJumpInfoToken *ji;
1647 guint8 *p = buf;
1648 char *name;
1649
1650 /*
1651 * The encoding for most methods is as follows:
1652 * - image index encoded as a leb128
1653 * - token index encoded as a leb128
1654 * Values of image index >= MONO_AOT_METHODREF_MIN are used to mark additional
1655 * types of method encodings.
1656 */
1657
1658 g_assert (image_index < MONO_AOT_METHODREF_MIN);
1659
1660 /* Mark methods which can't use aot trampolines because they need the further
1661 * processing in mono_magic_trampoline () which requires a MonoMethod*.
1662 */
1663 if ((method->is_generic && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) ||
1664 (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED))
1665 encode_value ((MONO_AOT_METHODREF_NO_AOT_TRAMPOLINE << 24), p, &p);
1666
1667 /*
1668 * Some wrapper methods are shared using their signature, encode their
1669 * stringified signature instead.
1670 * FIXME: Optimize disk usage
1671 */
1672 name = NULL;
1673 if (method->wrapper_type) {
1674 if (method->wrapper_type == MONO_WRAPPER_RUNTIME_INVOKE) {
1675 char *tmpsig = mono_signature_get_desc (mono_method_signature (method), TRUE);
1676 if (strcmp (method->name, "runtime_invoke_dynamic")) {
1677 name = mono_aot_wrapper_name (method);
1678 } else if (mono_marshal_method_from_wrapper (method) != method) {
1679 /* Direct wrapper, encode it normally */
1680 } else {
1681 name = g_strdup_printf ("(wrapper runtime-invoke):%s (%s)", method->name, tmpsig);
1682 }
1683 g_free (tmpsig);
1684 } else if (method->wrapper_type == MONO_WRAPPER_DELEGATE_INVOKE) {
1685 char *tmpsig = mono_signature_get_desc (mono_method_signature (method), TRUE);
1686 name = g_strdup_printf ("(wrapper delegate-invoke):%s (%s)", method->name, tmpsig);
1687 g_free (tmpsig);
1688 } else if (method->wrapper_type == MONO_WRAPPER_DELEGATE_BEGIN_INVOKE) {
1689 char *tmpsig = mono_signature_get_desc (mono_method_signature (method), TRUE);
1690 name = g_strdup_printf ("(wrapper delegate-begin-invoke):%s (%s)", method->name, tmpsig);
1691 g_free (tmpsig);
1692 } else if (method->wrapper_type == MONO_WRAPPER_DELEGATE_END_INVOKE) {
1693 char *tmpsig = mono_signature_get_desc (mono_method_signature (method), TRUE);
1694 name = g_strdup_printf ("(wrapper delegate-end-invoke):%s (%s)", method->name, tmpsig);
1695 g_free (tmpsig);
1696 }
1697 }
1698
1699 if (name) {
1700 encode_value ((MONO_AOT_METHODREF_WRAPPER_NAME << 24), p, &p);
1701 strcpy ((char*)p, name);
1702 p += strlen (name) + 1;
1703 g_free (name);
1704 } else if (method->wrapper_type) {
1705 encode_value ((MONO_AOT_METHODREF_WRAPPER << 24), p, &p);
1706
1707 encode_value (method->wrapper_type, p, &p);
1708
1709 switch (method->wrapper_type) {
1710 case MONO_WRAPPER_REMOTING_INVOKE:
1711 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
1712 case MONO_WRAPPER_XDOMAIN_INVOKE: {
1713 MonoMethod *m;
1714
1715 m = mono_marshal_method_from_wrapper (method);
1716 g_assert (m);
1717 encode_method_ref (acfg, m, p, &p);
1718 break;
1719 }
1720 case MONO_WRAPPER_PROXY_ISINST:
1721 case MONO_WRAPPER_LDFLD:
1722 case MONO_WRAPPER_LDFLDA:
1723 case MONO_WRAPPER_STFLD:
1724 case MONO_WRAPPER_ISINST: {
1725 MonoClass *proxy_class = mono_marshal_get_wrapper_info (method);
1726 encode_klass_ref (acfg, proxy_class, p, &p);
1727 break;
1728 }
1729 case MONO_WRAPPER_LDFLD_REMOTE:
1730 case MONO_WRAPPER_STFLD_REMOTE:
1731 break;
1732 case MONO_WRAPPER_ALLOC: {
1733 AllocatorWrapperInfo *info = mono_marshal_get_wrapper_info (method);
1734
1735 g_assert (info->alloc_type != -1);
1736 encode_value (info->alloc_type, p, &p);
1737 break;
1738 }
1739 case MONO_WRAPPER_WRITE_BARRIER:
1740 break;
1741 case MONO_WRAPPER_STELEMREF:
1742 break;
1743 case MONO_WRAPPER_UNKNOWN:
1744 if (strcmp (method->name, "FastMonitorEnter") == 0)
1745 encode_value (MONO_AOT_WRAPPER_MONO_ENTER, p, &p);
1746 else if (strcmp (method->name, "FastMonitorExit") == 0)
1747 encode_value (MONO_AOT_WRAPPER_MONO_EXIT, p, &p);
1748 else
1749 g_assert_not_reached ();
1750 break;
1751 case MONO_WRAPPER_SYNCHRONIZED:
1752 case MONO_WRAPPER_MANAGED_TO_NATIVE:
1753 case MONO_WRAPPER_RUNTIME_INVOKE: {
1754 MonoMethod *m;
1755
1756 m = mono_marshal_method_from_wrapper (method);
1757 g_assert (m);
1758 g_assert (m != method);
1759 encode_method_ref (acfg, m, p, &p);
1760 break;
1761 }
1762 case MONO_WRAPPER_MANAGED_TO_MANAGED:
1763 if (!strcmp (method->name, "ElementAddr")) {
1764 ElementAddrWrapperInfo *info = mono_marshal_get_wrapper_info (method);
1765
1766 g_assert (info);
1767 encode_value (MONO_AOT_WRAPPER_ELEMENT_ADDR, p, &p);
1768 encode_value (info->rank, p, &p);
1769 encode_value (info->elem_size, p, &p);
1770 } else {
1771 g_assert_not_reached ();
1772 }
1773 break;
1774 default:
1775 g_assert_not_reached ();
1776 }
1777 } else if (mono_method_signature (method)->is_inflated) {
1778 /*
1779 * This is a generic method, find the original token which referenced it and
1780 * encode that.
1781 * Obtain the token from information recorded by the JIT.
1782 */
1783 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1784 if (ji) {
1785 image_index = get_image_index (acfg, ji->image);
1786 g_assert (image_index < MAX_IMAGE_INDEX);
1787 token = ji->token;
1788
1789 encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
1790 encode_value (image_index, p, &p);
1791 encode_value (token, p, &p);
1792 } else {
1793 MonoMethod *declaring;
1794 MonoGenericContext *context = mono_method_get_context (method);
1795
1796 g_assert (method->is_inflated);
1797 declaring = ((MonoMethodInflated*)method)->declaring;
1798
1799 /*
1800 * This might be a non-generic method of a generic instance, which
1801 * doesn't have a token since the reference is generated by the JIT
1802 * like Nullable:Box/Unbox, or by generic sharing.
1803 */
1804
1805 encode_value ((MONO_AOT_METHODREF_GINST << 24), p, &p);
1806 /* Encode the klass */
1807 encode_klass_ref (acfg, method->klass, p, &p);
1808 /* Encode the method */
1809 image_index = get_image_index (acfg, method->klass->image);
1810 g_assert (image_index < MAX_IMAGE_INDEX);
1811 g_assert (declaring->token);
1812 token = declaring->token;
1813 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1814 encode_value (image_index, p, &p);
1815 encode_value (token, p, &p);
1816 encode_generic_context (acfg, context, p, &p);
1817 }
1818 } else if (token == 0) {
1819 /* This might be a method of a constructed type like int[,].Set */
1820 /* Obtain the token from information recorded by the JIT */
1821 ji = g_hash_table_lookup (acfg->token_info_hash, method);
1822 if (ji) {
1823 image_index = get_image_index (acfg, ji->image);
1824 g_assert (image_index < MAX_IMAGE_INDEX);
1825 token = ji->token;
1826
1827 encode_value ((MONO_AOT_METHODREF_METHODSPEC << 24), p, &p);
1828 encode_value (image_index, p, &p);
1829 encode_value (token, p, &p);
1830 } else {
1831 /* Array methods */
1832 g_assert (method->klass->rank);
1833
1834 /* Encode directly */
1835 encode_value ((MONO_AOT_METHODREF_ARRAY << 24), p, &p);
1836 encode_klass_ref (acfg, method->klass, p, &p);
1837 if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == method->klass->rank)
1838 encode_value (0, p, &p);
1839 else if (!strcmp (method->name, ".ctor") && mono_method_signature (method)->param_count == method->klass->rank * 2)
1840 encode_value (1, p, &p);
1841 else if (!strcmp (method->name, "Get"))
1842 encode_value (2, p, &p);
1843 else if (!strcmp (method->name, "Address"))
1844 encode_value (3, p, &p);
1845 else if (!strcmp (method->name, "Set"))
1846 encode_value (4, p, &p);
1847 else
1848 g_assert_not_reached ();
1849 }
1850 } else {
1851 g_assert (mono_metadata_token_table (token) == MONO_TABLE_METHOD);
1852 encode_value ((image_index << 24) | mono_metadata_token_index (token), p, &p);
1853 }
1854 *endbuf = p;
1855 }
1856
1857 static gint
1858 compare_patches (gconstpointer a, gconstpointer b)
1859 {
1860 int i, j;
1861
1862 i = (*(MonoJumpInfo**)a)->ip.i;
1863 j = (*(MonoJumpInfo**)b)->ip.i;
1864
1865 if (i < j)
1866 return -1;
1867 else
1868 if (i > j)
1869 return 1;
1870 else
1871 return 0;
1872 }
1873
1874 static G_GNUC_UNUSED char*
1875 patch_to_string (MonoJumpInfo *patch_info)
1876 {
1877 GString *str;
1878
1879 str = g_string_new ("");
1880
1881 g_string_append_printf (str, "%s(", get_patch_name (patch_info->type));
1882
1883 switch (patch_info->type) {
1884 case MONO_PATCH_INFO_VTABLE:
1885 mono_type_get_desc (str, &patch_info->data.klass->byval_arg, TRUE);
1886 break;
1887 default:
1888 break;
1889 }
1890 g_string_append_printf (str, ")");
1891 return g_string_free (str, FALSE);
1892 }
1893
1894 /*
1895 * is_plt_patch:
1896 *
1897 * Return whenever PATCH_INFO refers to a direct call, and thus requires a
1898 * PLT entry.
1899 */
1900 static inline gboolean
1901 is_plt_patch (MonoJumpInfo *patch_info)
1902 {
1903 switch (patch_info->type) {
1904 case MONO_PATCH_INFO_METHOD:
1905 case MONO_PATCH_INFO_INTERNAL_METHOD:
1906 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
1907 case MONO_PATCH_INFO_ICALL_ADDR:
1908 case MONO_PATCH_INFO_CLASS_INIT:
1909 case MONO_PATCH_INFO_RGCTX_FETCH:
1910 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
1911 case MONO_PATCH_INFO_MONITOR_ENTER:
1912 case MONO_PATCH_INFO_MONITOR_EXIT:
1913 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE:
1914 return TRUE;
1915 default:
1916 return FALSE;
1917 }
1918 }
1919
1920 /*
1921 * get_plt_symbol:
1922 *
1923 * Return the symbol identifying the plt entry PLT_OFFSET.
1924 */
1925 static char*
1926 get_plt_symbol (MonoAotCompile *acfg, int plt_offset, MonoJumpInfo *patch_info)
1927 {
1928 #ifdef __MACH__
1929 /*
1930 * The Apple linker reorganizes object files, so it doesn't like branches to local
1931 * labels, since those have no relocations.
1932 */
1933 return g_strdup_printf ("%sp_%d", acfg->llvm_label_prefix, plt_offset);
1934 #else
1935 return g_strdup_printf ("%s%sp_%d", acfg->llvm_label_prefix, acfg->temp_prefix, plt_offset);
1936 #endif
1937 }
1938
1939 /*
1940 * get_plt_entry:
1941 *
1942 * Return a PLT entry which belongs to the method identified by PATCH_INFO.
1943 */
1944 static MonoPltEntry*
1945 get_plt_entry (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
1946 {
1947 MonoPltEntry *res;
1948
1949 if (!is_plt_patch (patch_info))
1950 return NULL;
1951
1952 res = g_hash_table_lookup (acfg->patch_to_plt_entry, patch_info);
1953
1954 // FIXME: This breaks the calculation of final_got_size
1955 if (!acfg->llvm && patch_info->type == MONO_PATCH_INFO_METHOD && (patch_info->data.method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED)) {
1956 /*
1957 * Allocate a separate PLT slot for each such patch, since some plt
1958 * entries will refer to the method itself, and some will refer to the
1959 * wrapper.
1960 */
1961 res = NULL;
1962 }
1963
1964 if (!res) {
1965 MonoJumpInfo *new_ji;
1966
1967 g_assert (!acfg->final_got_size);
1968
1969 new_ji = mono_patch_info_dup_mp (acfg->mempool, patch_info);
1970
1971 res = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoPltEntry));
1972 res->plt_offset = acfg->plt_offset;
1973 res->ji = new_ji;
1974 res->symbol = get_plt_symbol (acfg, res->plt_offset, patch_info);
1975
1976 g_hash_table_insert (acfg->patch_to_plt_entry, new_ji, res);
1977
1978 g_hash_table_insert (acfg->plt_offset_to_entry, GUINT_TO_POINTER (res->plt_offset), res);
1979
1980 acfg->plt_offset ++;
1981 }
1982
1983 return res;
1984 }
1985
1986 /**
1987 * get_got_offset:
1988 *
1989 * Returns the offset of the GOT slot where the runtime object resulting from resolving
1990 * JI could be found if it exists, otherwise allocates a new one.
1991 */
1992 static guint32
1993 get_got_offset (MonoAotCompile *acfg, MonoJumpInfo *ji)
1994 {
1995 guint32 got_offset;
1996
1997 got_offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->patch_to_got_offset_by_type [ji->type], ji));
1998 if (got_offset)
1999 return got_offset - 1;
2000
2001 got_offset = acfg->got_offset;
2002 acfg->got_offset ++;
2003
2004 if (acfg->final_got_size)
2005 g_assert (got_offset < acfg->final_got_size);
2006
2007 acfg->stats.got_slots ++;
2008 acfg->stats.got_slot_types [ji->type] ++;
2009
2010 g_hash_table_insert (acfg->patch_to_got_offset, ji, GUINT_TO_POINTER (got_offset + 1));
2011 g_hash_table_insert (acfg->patch_to_got_offset_by_type [ji->type], ji, GUINT_TO_POINTER (got_offset + 1));
2012 g_ptr_array_add (acfg->got_patches, ji);
2013
2014 return got_offset;
2015 }
2016
2017 /* Add a method to the list of methods which need to be emitted */
2018 static void
2019 add_method_with_index (MonoAotCompile *acfg, MonoMethod *method, int index, gboolean extra)
2020 {
2021 g_assert (method);
2022 if (!g_hash_table_lookup (acfg->method_indexes, method)) {
2023 g_ptr_array_add (acfg->methods, method);
2024 g_hash_table_insert (acfg->method_indexes, method, GUINT_TO_POINTER (index + 1));
2025 acfg->nmethods = acfg->methods->len + 1;
2026 }
2027
2028 if (method->wrapper_type || extra)
2029 g_ptr_array_add (acfg->extra_methods, method);
2030 }
2031
2032 static guint32
2033 get_method_index (MonoAotCompile *acfg, MonoMethod *method)
2034 {
2035 int index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
2036
2037 g_assert (index);
2038
2039 return index - 1;
2040 }
2041
2042 static int
2043 add_method_full (MonoAotCompile *acfg, MonoMethod *method, gboolean extra, int depth)
2044 {
2045 int index;
2046
2047 index = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_indexes, method));
2048 if (index)
2049 return index - 1;
2050
2051 index = acfg->method_index;
2052 add_method_with_index (acfg, method, index, extra);
2053
2054 /* FIXME: Fix quadratic behavior */
2055 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (index));
2056
2057 g_hash_table_insert (acfg->method_depth, method, GUINT_TO_POINTER (depth));
2058
2059 acfg->method_index ++;
2060
2061 return index;
2062 }
2063
2064 static int
2065 add_method (MonoAotCompile *acfg, MonoMethod *method)
2066 {
2067 return add_method_full (acfg, method, FALSE, 0);
2068 }
2069
2070 static void
2071 add_extra_method (MonoAotCompile *acfg, MonoMethod *method)
2072 {
2073 add_method_full (acfg, method, TRUE, 0);
2074 }
2075
2076 static void
2077 add_extra_method_with_depth (MonoAotCompile *acfg, MonoMethod *method, int depth)
2078 {
2079 add_method_full (acfg, method, TRUE, depth);
2080 }
2081
2082 static void
2083 add_jit_icall_wrapper (gpointer key, gpointer value, gpointer user_data)
2084 {
2085 MonoAotCompile *acfg = user_data;
2086 MonoJitICallInfo *callinfo = value;
2087 MonoMethod *wrapper;
2088 char *name;
2089
2090 if (!callinfo->sig)
2091 return;
2092
2093 name = g_strdup_printf ("__icall_wrapper_%s", callinfo->name);
2094 wrapper = mono_marshal_get_icall_wrapper (callinfo->sig, name, callinfo->func, check_for_pending_exc);
2095 g_free (name);
2096
2097 add_method (acfg, wrapper);
2098 }
2099
2100 static MonoMethod*
2101 get_runtime_invoke_sig (MonoMethodSignature *sig)
2102 {
2103 MonoMethodBuilder *mb;
2104 MonoMethod *m;
2105
2106 mb = mono_mb_new (mono_defaults.object_class, "FOO", MONO_WRAPPER_NONE);
2107 m = mono_mb_create_method (mb, sig, 16);
2108 return mono_marshal_get_runtime_invoke (m, FALSE);
2109 }
2110
2111 static gboolean
2112 can_marshal_struct (MonoClass *klass)
2113 {
2114 MonoClassField *field;
2115 gboolean can_marshal = TRUE;
2116 gpointer iter = NULL;
2117
2118 if ((klass->flags & TYPE_ATTRIBUTE_LAYOUT_MASK) == TYPE_ATTRIBUTE_AUTO_LAYOUT)
2119 return FALSE;
2120
2121 /* Only allow a few field types to avoid asserts in the marshalling code */
2122 while ((field = mono_class_get_fields (klass, &iter))) {
2123 if ((field->type->attrs & FIELD_ATTRIBUTE_STATIC))
2124 continue;
2125
2126 switch (field->type->type) {
2127 case MONO_TYPE_I4:
2128 case MONO_TYPE_U4:
2129 case MONO_TYPE_I1:
2130 case MONO_TYPE_U1:
2131 case MONO_TYPE_BOOLEAN:
2132 case MONO_TYPE_I2:
2133 case MONO_TYPE_U2:
2134 case MONO_TYPE_CHAR:
2135 case MONO_TYPE_I8:
2136 case MONO_TYPE_U8:
2137 case MONO_TYPE_I:
2138 case MONO_TYPE_U:
2139 case MONO_TYPE_PTR:
2140 case MONO_TYPE_R4:
2141 case MONO_TYPE_R8:
2142 case MONO_TYPE_STRING:
2143 break;
2144 case MONO_TYPE_VALUETYPE:
2145 if (!mono_class_from_mono_type (field->type)->enumtype && !can_marshal_struct (mono_class_from_mono_type (field->type)))
2146 can_marshal = FALSE;
2147 break;
2148 default:
2149 can_marshal = FALSE;
2150 break;
2151 }
2152 }
2153
2154 /* Special cases */
2155 /* Its hard to compute whenever these can be marshalled or not */
2156 if (!strcmp (klass->name_space, "System.Net.NetworkInformation.MacOsStructs"))
2157 return TRUE;
2158
2159 return can_marshal;
2160 }
2161
2162 static void
2163 add_wrappers (MonoAotCompile *acfg)
2164 {
2165 MonoMethod *method, *m;
2166 int i, j;
2167 MonoMethodSignature *sig, *csig;
2168 guint32 token;
2169
2170 /*
2171 * FIXME: Instead of AOTing all the wrappers, it might be better to redesign them
2172 * so there is only one wrapper of a given type, or inlining their contents into their
2173 * callers.
2174 */
2175
2176 /*
2177 * FIXME: This depends on the fact that different wrappers have different
2178 * names.
2179 */
2180
2181 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2182 MonoMethod *method;
2183 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2184 gboolean skip = FALSE;
2185
2186 method = mono_get_method (acfg->image, token, NULL);
2187
2188 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2189 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
2190 (method->flags & METHOD_ATTRIBUTE_ABSTRACT))
2191 skip = TRUE;
2192
2193 if (method->is_generic || method->klass->generic_container)
2194 skip = TRUE;
2195
2196 /* Skip methods which can not be handled by get_runtime_invoke () */
2197 sig = mono_method_signature (method);
2198 if ((sig->ret->type == MONO_TYPE_PTR) ||
2199 (sig->ret->type == MONO_TYPE_TYPEDBYREF))
2200 skip = TRUE;
2201
2202 for (j = 0; j < sig->param_count; j++) {
2203 if (sig->params [j]->type == MONO_TYPE_TYPEDBYREF)
2204 skip = TRUE;
2205 }
2206
2207 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
2208 if (!method->klass->contextbound) {
2209 MonoDynCallInfo *info = mono_arch_dyn_call_prepare (sig);
2210 gboolean has_nullable = FALSE;
2211
2212 for (j = 0; j < sig->param_count; j++) {
2213 if (sig->params [j]->type == MONO_TYPE_GENERICINST && mono_class_is_nullable (mono_class_from_mono_type (sig->params [j])))
2214 has_nullable = TRUE;
2215 }
2216
2217 if (info && !has_nullable) {
2218 /* Supported by the dynamic runtime-invoke wrapper */
2219 skip = TRUE;
2220 g_free (info);
2221 }
2222 }
2223 #endif
2224
2225 if (!skip) {
2226 //printf ("%s\n", mono_method_full_name (method, TRUE));
2227 add_method (acfg, mono_marshal_get_runtime_invoke (method, FALSE));
2228 }
2229 }
2230
2231 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
2232 #ifdef MONO_ARCH_HAVE_TLS_GET
2233 MonoMethodDesc *desc;
2234 MonoMethod *orig_method;
2235 int nallocators;
2236 #endif
2237
2238 /* Runtime invoke wrappers */
2239
2240 /* void runtime-invoke () [.cctor] */
2241 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2242 csig->ret = &mono_defaults.void_class->byval_arg;
2243 add_method (acfg, get_runtime_invoke_sig (csig));
2244
2245 /* void runtime-invoke () [Finalize] */
2246 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2247 csig->hasthis = 1;
2248 csig->ret = &mono_defaults.void_class->byval_arg;
2249 add_method (acfg, get_runtime_invoke_sig (csig));
2250
2251 /* void runtime-invoke (string) [exception ctor] */
2252 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 1);
2253 csig->hasthis = 1;
2254 csig->ret = &mono_defaults.void_class->byval_arg;
2255 csig->params [0] = &mono_defaults.string_class->byval_arg;
2256 add_method (acfg, get_runtime_invoke_sig (csig));
2257
2258 /* void runtime-invoke (string, string) [exception ctor] */
2259 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2260 csig->hasthis = 1;
2261 csig->ret = &mono_defaults.void_class->byval_arg;
2262 csig->params [0] = &mono_defaults.string_class->byval_arg;
2263 csig->params [1] = &mono_defaults.string_class->byval_arg;
2264 add_method (acfg, get_runtime_invoke_sig (csig));
2265
2266 /* string runtime-invoke () [Exception.ToString ()] */
2267 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 0);
2268 csig->hasthis = 1;
2269 csig->ret = &mono_defaults.string_class->byval_arg;
2270 add_method (acfg, get_runtime_invoke_sig (csig));
2271
2272 /* void runtime-invoke (string, Exception) [exception ctor] */
2273 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2274 csig->hasthis = 1;
2275 csig->ret = &mono_defaults.void_class->byval_arg;
2276 csig->params [0] = &mono_defaults.string_class->byval_arg;
2277 csig->params [1] = &mono_defaults.exception_class->byval_arg;
2278 add_method (acfg, get_runtime_invoke_sig (csig));
2279
2280 /* Assembly runtime-invoke (string, bool) [DoAssemblyResolve] */
2281 csig = mono_metadata_signature_alloc (mono_defaults.corlib, 2);
2282 csig->hasthis = 1;
2283 csig->ret = &(mono_class_from_name (
2284 mono_defaults.corlib, "System.Reflection", "Assembly"))->byval_arg;
2285 csig->params [0] = &mono_defaults.string_class->byval_arg;
2286 csig->params [1] = &mono_defaults.boolean_class->byval_arg;
2287 add_method (acfg, get_runtime_invoke_sig (csig));
2288
2289 /* runtime-invoke used by finalizers */
2290 add_method (acfg, mono_marshal_get_runtime_invoke (mono_class_get_method_from_name_flags (mono_defaults.object_class, "Finalize", 0, 0), TRUE));
2291
2292 /* This is used by mono_runtime_capture_context () */
2293 method = mono_get_context_capture_method ();
2294 if (method)
2295 add_method (acfg, mono_marshal_get_runtime_invoke (method, FALSE));
2296
2297 #ifdef MONO_ARCH_DYN_CALL_SUPPORTED
2298 add_method (acfg, mono_marshal_get_runtime_invoke_dynamic ());
2299 #endif
2300
2301 /* JIT icall wrappers */
2302 /* FIXME: locking */
2303 g_hash_table_foreach (mono_get_jit_icall_info (), add_jit_icall_wrapper, acfg);
2304
2305 /* stelemref */
2306 add_method (acfg, mono_marshal_get_stelemref ());
2307
2308 #ifdef MONO_ARCH_HAVE_TLS_GET
2309 /* Managed Allocators */
2310 nallocators = mono_gc_get_managed_allocator_types ();
2311 for (i = 0; i < nallocators; ++i) {
2312 m = mono_gc_get_managed_allocator_by_type (i);
2313 if (m)
2314 add_method (acfg, m);
2315 }
2316
2317 /* Monitor Enter/Exit */
2318 desc = mono_method_desc_new ("Monitor:Enter", FALSE);
2319 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
2320 g_assert (orig_method);
2321 mono_method_desc_free (desc);
2322 method = mono_monitor_get_fast_path (orig_method);
2323 if (method)
2324 add_method (acfg, method);
2325
2326 desc = mono_method_desc_new ("Monitor:Exit", FALSE);
2327 orig_method = mono_method_desc_search_in_class (desc, mono_defaults.monitor_class);
2328 g_assert (orig_method);
2329 mono_method_desc_free (desc);
2330 method = mono_monitor_get_fast_path (orig_method);
2331 if (method)
2332 add_method (acfg, method);
2333 #endif
2334 }
2335
2336 /*
2337 * remoting-invoke-with-check wrappers are very frequent, so avoid emitting them,
2338 * we use the original method instead at runtime.
2339 * Since full-aot doesn't support remoting, this is not a problem.
2340 */
2341 #if 0
2342 /* remoting-invoke wrappers */
2343 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2344 MonoMethodSignature *sig;
2345
2346 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2347 method = mono_get_method (acfg->image, token, NULL);
2348
2349 sig = mono_method_signature (method);
2350
2351 if (sig->hasthis && (method->klass->marshalbyref || method->klass == mono_defaults.object_class)) {
2352 m = mono_marshal_get_remoting_invoke_with_check (method);
2353
2354 add_method (acfg, m);
2355 }
2356 }
2357 #endif
2358
2359 /* delegate-invoke wrappers */
2360 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
2361 MonoClass *klass;
2362
2363 token = MONO_TOKEN_TYPE_DEF | (i + 1);
2364 klass = mono_class_get (acfg->image, token);
2365
2366 if (klass->delegate && klass != mono_defaults.delegate_class && klass != mono_defaults.multicastdelegate_class && !klass->generic_container) {
2367 method = mono_get_delegate_invoke (klass);
2368
2369 m = mono_marshal_get_delegate_invoke (method, NULL);
2370
2371 add_method (acfg, m);
2372
2373 method = mono_class_get_method_from_name_flags (klass, "BeginInvoke", -1, 0);
2374 add_method (acfg, mono_marshal_get_delegate_begin_invoke (method));
2375
2376 method = mono_class_get_method_from_name_flags (klass, "EndInvoke", -1, 0);
2377 add_method (acfg, mono_marshal_get_delegate_end_invoke (method));
2378 }
2379 }
2380
2381 /* Synchronized wrappers */
2382 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2383 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2384 method = mono_get_method (acfg->image, token, NULL);
2385
2386 if (method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED && !method->is_generic)
2387 add_method (acfg, mono_marshal_get_synchronized_wrapper (method));
2388 }
2389
2390 /* pinvoke wrappers */
2391 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2392 MonoMethod *method;
2393 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2394
2395 method = mono_get_method (acfg->image, token, NULL);
2396
2397 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2398 (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
2399 add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
2400 }
2401 }
2402
2403 /* native-to-managed wrappers */
2404 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
2405 MonoMethod *method;
2406 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
2407 MonoCustomAttrInfo *cattr;
2408 int j;
2409
2410 method = mono_get_method (acfg->image, token, NULL);
2411
2412 /*
2413 * Only generate native-to-managed wrappers for methods which have an
2414 * attribute named MonoPInvokeCallbackAttribute. We search for the attribute by
2415 * name to avoid defining a new assembly to contain it.
2416 */
2417 cattr = mono_custom_attrs_from_method (method);
2418
2419 if (cattr) {
2420 for (j = 0; j < cattr->num_attrs; ++j)
2421 if (cattr->attrs [j].ctor && !strcmp (cattr->attrs [j].ctor->klass->name, "MonoPInvokeCallbackAttribute"))
2422 break;
2423 if (j < cattr->num_attrs) {
2424 MonoCustomAttrEntry *e = &cattr->attrs [j];
2425 MonoMethodSignature *sig = mono_method_signature (e->ctor);
2426 const char *p = (const char*)e->data;
2427 int slen;
2428 char *n;
2429 MonoType *t;
2430 MonoClass *klass;
2431
2432 g_assert (method->flags & METHOD_ATTRIBUTE_STATIC);
2433
2434 g_assert (sig->param_count == 1);
2435 g_assert (sig->params [0]->type == MONO_TYPE_CLASS && !strcmp (mono_class_from_mono_type (sig->params [0])->name, "Type"));
2436
2437 /*
2438 * Decode the cattr manually since we can't create objects
2439 * during aot compilation.
2440 */
2441
2442 /* Skip prolog */
2443 p += 2;
2444
2445 /* From load_cattr_value () in reflection.c */
2446 slen = mono_metadata_decode_value (p, &p);
2447 n = g_memdup (p, slen + 1);
2448 n [slen] = 0;
2449 t = mono_reflection_type_from_name (n, acfg->image);
2450 g_assert (t);
2451 g_free (n);
2452
2453 klass = mono_class_from_mono_type (t);
2454 g_assert (klass->parent == mono_defaults.multicastdelegate_class);
2455
2456 add_method (acfg, mono_marshal_get_managed_wrapper (method, klass, 0));
2457 }
2458 }
2459
2460 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
2461 (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)) {
2462 add_method (acfg, mono_marshal_get_native_wrapper (method, TRUE, TRUE));
2463 }
2464 }
2465
2466 /* StructureToPtr/PtrToStructure wrappers */
2467 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
2468 MonoClass *klass;
2469
2470 token = MONO_TOKEN_TYPE_DEF | (i + 1);
2471 klass = mono_class_get (acfg->image, token);
2472
2473 if (klass->valuetype && !klass->generic_container && can_marshal_struct (klass)) {
2474 add_method (acfg, mono_marshal_get_struct_to_ptr (klass));
2475 add_method (acfg, mono_marshal_get_ptr_to_struct (klass));
2476 }
2477 }
2478 }
2479
2480 static gboolean
2481 has_type_vars (MonoClass *klass)
2482 {
2483 if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR))
2484 return TRUE;
2485 if (klass->rank)
2486 return has_type_vars (klass->element_class);
2487 if (klass->generic_class) {
2488 MonoGenericContext *context = &klass->generic_class->context;
2489 if (context->class_inst) {
2490 int i;
2491
2492 for (i = 0; i < context->class_inst->type_argc; ++i)
2493 if (has_type_vars (mono_class_from_mono_type (context->class_inst->type_argv [i])))
2494 return TRUE;
2495 }
2496 }
2497 return FALSE;
2498 }
2499
2500 static gboolean
2501 method_has_type_vars (MonoMethod *method)
2502 {
2503 if (has_type_vars (method->klass))
2504 return TRUE;
2505
2506 if (method->is_inflated) {
2507 MonoGenericContext *context = mono_method_get_context (method);
2508 if (context->method_inst) {
2509 int i;
2510
2511 for (i = 0; i < context->method_inst->type_argc; ++i)
2512 if (has_type_vars (mono_class_from_mono_type (context->method_inst->type_argv [i])))
2513 return TRUE;
2514 }
2515 }
2516 return FALSE;
2517 }
2518
2519 static void add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth);
2520
2521 static void
2522 add_generic_class (MonoAotCompile *acfg, MonoClass *klass)
2523 {
2524 add_generic_class_with_depth (acfg, klass, 0);
2525 }
2526
2527 /*
2528 * add_generic_class:
2529 *
2530 * Add all methods of a generic class.
2531 */
2532 static void
2533 add_generic_class_with_depth (MonoAotCompile *acfg, MonoClass *klass, int depth)
2534 {
2535 MonoMethod *method;
2536 gpointer iter;
2537
2538 mono_class_init (klass);
2539
2540 if (klass->generic_class && klass->generic_class->context.class_inst->is_open)
2541 return;
2542
2543 if (has_type_vars (klass))
2544 return;
2545
2546 if (!klass->generic_class && !klass->rank)
2547 return;
2548
2549 iter = NULL;
2550 while ((method = mono_class_get_methods (klass, &iter))) {
2551 if (mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE))
2552 /* Already added */
2553 continue;
2554
2555 if (method->is_generic)
2556 /* FIXME: */
2557 continue;
2558
2559 /*
2560 * FIXME: Instances which are referenced by these methods are not added,
2561 * for example Array.Resize<int> for List<int>.Add ().
2562 */
2563 add_extra_method_with_depth (acfg, method, depth);
2564 }
2565
2566 if (klass->delegate) {
2567 method = mono_get_delegate_invoke (klass);
2568
2569 method = mono_marshal_get_delegate_invoke (method, NULL);
2570
2571 add_method (acfg, method);
2572 }
2573
2574 /*
2575 * For ICollection<T>, add instances of the helper methods
2576 * in Array, since a T[] could be cast to ICollection<T>.
2577 */
2578 if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") &&
2579 (!strcmp(klass->name, "ICollection`1") || !strcmp (klass->name, "IEnumerable`1") || !strcmp (klass->name, "IList`1") || !strcmp (klass->name, "IEnumerator`1"))) {
2580 MonoClass *tclass = mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
2581 MonoClass *array_class = mono_bounded_array_class_get (tclass, 1, FALSE);
2582 gpointer iter;
2583 char *name_prefix;
2584
2585 if (!strcmp (klass->name, "IEnumerator`1"))
2586 name_prefix = g_strdup_printf ("%s.%s", klass->name_space, "IEnumerable`1");
2587 else
2588 name_prefix = g_strdup_printf ("%s.%s", klass->name_space, klass->name);
2589
2590 /* Add the T[]/InternalEnumerator class */
2591 if (!strcmp (klass->name, "IEnumerable`1") || !strcmp (klass->name, "IEnumerator`1")) {
2592 MonoClass *nclass;
2593
2594 iter = NULL;
2595 while ((nclass = mono_class_get_nested_types (array_class->parent, &iter))) {
2596 if (!strcmp (nclass->name, "InternalEnumerator`1"))
2597 break;
2598 }
2599 g_assert (nclass);
2600 nclass = mono_class_inflate_generic_class (nclass, mono_generic_class_get_context (klass->generic_class));
2601 add_generic_class (acfg, nclass);
2602 }
2603
2604 iter = NULL;
2605 while ((method = mono_class_get_methods (array_class, &iter))) {
2606 if (strstr (method->name, name_prefix)) {
2607 MonoMethod *m = mono_aot_get_array_helper_from_wrapper (method);
2608 add_extra_method_with_depth (acfg, m, depth);
2609 }
2610 }
2611
2612 g_free (name_prefix);
2613 }
2614
2615 /* Add an instance of GenericComparer<T> which is created dynamically by Comparer<T> */
2616 if (klass->image == mono_defaults.corlib && !strcmp (klass->name_space, "System.Collections.Generic") && !strcmp (klass->name, "Comparer`1")) {
2617 MonoClass *tclass = mono_class_from_mono_type (klass->generic_class->context.class_inst->type_argv [0]);
2618 MonoClass *icomparable, *gcomparer;
2619 MonoGenericContext ctx;
2620 MonoType *args [16];
2621
2622 memset (&ctx, 0, sizeof (ctx));
2623
2624 icomparable = mono_class_from_name (mono_defaults.corlib, "System", "IComparable`1");
2625 g_assert (icomparable);
2626 args [0] = &tclass->byval_arg;
2627 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
2628
2629 if (mono_class_is_assignable_from (mono_class_inflate_generic_class (icomparable, &ctx), tclass)) {
2630 gcomparer = mono_class_from_name (mono_defaults.corlib, "System.Collections.Generic", "GenericComparer`1");
2631 g_assert (gcomparer);
2632 add_generic_class (acfg, mono_class_inflate_generic_class (gcomparer, &ctx));
2633 }
2634 }
2635 }
2636
2637 static void
2638 add_instances_of (MonoAotCompile *acfg, MonoClass *klass, MonoType **insts, int ninsts)
2639 {
2640 int i;
2641 MonoGenericContext ctx;
2642 MonoType *args [16];
2643
2644 memset (&ctx, 0, sizeof (ctx));
2645
2646 for (i = 0; i < ninsts; ++i) {
2647 args [0] = insts [i];
2648 ctx.class_inst = mono_metadata_get_generic_inst (1, args);
2649 add_generic_class (acfg, mono_class_inflate_generic_class (klass, &ctx));
2650 }
2651 }
2652
2653 /*
2654 * add_generic_instances:
2655 *
2656 * Add instances referenced by the METHODSPEC/TYPESPEC table.
2657 */
2658 static void
2659 add_generic_instances (MonoAotCompile *acfg)
2660 {
2661 int i;
2662 guint32 token;
2663 MonoMethod *method;
2664 MonoMethodHeader *header;
2665 MonoMethodSignature *sig;
2666 MonoGenericContext *context;
2667
2668 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHODSPEC].rows; ++i) {
2669 token = MONO_TOKEN_METHOD_SPEC | (i + 1);
2670 method = mono_get_method (acfg->image, token, NULL);
2671
2672 if (method->klass->image != acfg->image)
2673 continue;
2674
2675 context = mono_method_get_context (method);
2676
2677 if (context && ((context->class_inst && context->class_inst->is_open)))
2678 continue;
2679
2680 /*
2681 * For open methods, create an instantiation which can be passed to the JIT.
2682 * FIXME: Handle class_inst as well.
2683 */
2684 if (context && context->method_inst && context->method_inst->is_open) {
2685 MonoGenericContext shared_context;
2686 MonoGenericInst *inst;
2687 MonoType **type_argv;
2688 int i;
2689 MonoMethod *declaring_method;
2690 gboolean supported = TRUE;
2691
2692 /* Check that the context doesn't contain open constructed types */
2693 if (context->class_inst) {
2694 inst = context->class_inst;
2695 for (i = 0; i < inst->type_argc; ++i) {
2696 if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
2697 continue;
2698 if (mono_class_is_open_constructed_type (inst->type_argv [i]))
2699 supported = FALSE;
2700 }
2701 }
2702 if (context->method_inst) {
2703 inst = context->method_inst;
2704 for (i = 0; i < inst->type_argc; ++i) {
2705 if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
2706 continue;
2707 if (mono_class_is_open_constructed_type (inst->type_argv [i]))
2708 supported = FALSE;
2709 }
2710 }
2711
2712 if (!supported)
2713 continue;
2714
2715 memset (&shared_context, 0, sizeof (MonoGenericContext));
2716
2717 inst = context->class_inst;
2718 if (inst) {
2719 type_argv = g_new0 (MonoType*, inst->type_argc);
2720 for (i = 0; i < inst->type_argc; ++i) {
2721 if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
2722 type_argv [i] = &mono_defaults.object_class->byval_arg;
2723 else
2724 type_argv [i] = inst->type_argv [i];
2725 }
2726
2727 shared_context.class_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
2728 g_free (type_argv);
2729 }
2730
2731 inst = context->method_inst;
2732 if (inst) {
2733 type_argv = g_new0 (MonoType*, inst->type_argc);
2734 for (i = 0; i < inst->type_argc; ++i) {
2735 if (MONO_TYPE_IS_REFERENCE (inst->type_argv [i]) || inst->type_argv [i]->type == MONO_TYPE_VAR || inst->type_argv [i]->type == MONO_TYPE_MVAR)
2736 type_argv [i] = &mono_defaults.object_class->byval_arg;
2737 else
2738 type_argv [i] = inst->type_argv [i];
2739 }
2740
2741 shared_context.method_inst = mono_metadata_get_generic_inst (inst->type_argc, type_argv);
2742 g_free (type_argv);
2743 }
2744
2745 if (method->is_generic || method->klass->generic_container)
2746 declaring_method = method;
2747 else
2748 declaring_method = mono_method_get_declaring_generic_method (method);
2749
2750 method = mono_class_inflate_generic_method (declaring_method, &shared_context);
2751 }
2752
2753 /*
2754 * If the method is fully sharable, it was already added in place of its
2755 * generic definition.
2756 */
2757 if (mono_method_is_generic_sharable_impl_full (method, FALSE, FALSE))
2758 continue;
2759
2760 /*
2761 * FIXME: Partially shared methods are not shared here, so we end up with
2762 * many identical methods.
2763 */
2764 add_extra_method (acfg, method);
2765 }
2766
2767 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPESPEC].rows; ++i) {
2768 MonoClass *klass;
2769
2770 token = MONO_TOKEN_TYPE_SPEC | (i + 1);
2771
2772 klass = mono_class_get (acfg->image, token);
2773 if (!klass || klass->rank)
2774 continue;
2775
2776 add_generic_class (acfg, klass);
2777 }
2778
2779 /* Add types of args/locals */
2780 for (i = 0; i < acfg->methods->len; ++i) {
2781 int j;
2782
2783 method = g_ptr_array_index (acfg->methods, i);
2784
2785 sig = mono_method_signature (method);
2786
2787 if (sig) {
2788 for (j = 0; j < sig->param_count; ++j)
2789 if (sig->params [j]->type == MONO_TYPE_GENERICINST)
2790 add_generic_class (acfg, mono_class_from_mono_type (sig->params [j]));
2791 }
2792
2793 header = mono_method_get_header (method);
2794
2795 if (header) {
2796 for (j = 0; j < header->num_locals; ++j)
2797 if (header->locals [j]->type == MONO_TYPE_GENERICINST)
2798 add_generic_class (acfg, mono_class_from_mono_type (header->locals [j]));
2799 }
2800 }
2801
2802 if (acfg->image == mono_defaults.corlib) {
2803 MonoClass *klass;
2804 MonoType *insts [256];
2805 int ninsts = 0;
2806
2807 insts [ninsts ++] = &mono_defaults.byte_class->byval_arg;
2808 insts [ninsts ++] = &mono_defaults.sbyte_class->byval_arg;
2809 insts [ninsts ++] = &mono_defaults.int16_class->byval_arg;
2810 insts [ninsts ++] = &mono_defaults.uint16_class->byval_arg;
2811 insts [ninsts ++] = &mono_defaults.int32_class->byval_arg;
2812 insts [ninsts ++] = &mono_defaults.uint32_class->byval_arg;
2813 insts [ninsts ++] = &mono_defaults.int64_class->byval_arg;
2814 insts [ninsts ++] = &mono_defaults.uint64_class->byval_arg;
2815 insts [ninsts ++] = &mono_defaults.single_class->byval_arg;
2816 insts [ninsts ++] = &mono_defaults.double_class->byval_arg;
2817 insts [ninsts ++] = &mono_defaults.char_class->byval_arg;
2818 insts [ninsts ++] = &mono_defaults.boolean_class->byval_arg;
2819
2820 /* Add GenericComparer<T> instances for primitive types for Enum.ToString () */
2821 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "GenericComparer`1");
2822 if (klass)
2823 add_instances_of (acfg, klass, insts, ninsts);
2824 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "GenericEqualityComparer`1");
2825 if (klass)
2826 add_instances_of (acfg, klass, insts, ninsts);
2827
2828 /* Add instances of the array generic interfaces for primitive types */
2829 /* This will add instances of the InternalArray_ helper methods in Array too */
2830 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "ICollection`1");
2831 if (klass)
2832 add_instances_of (acfg, klass, insts, ninsts);
2833 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "IList`1");
2834 if (klass)
2835 add_instances_of (acfg, klass, insts, ninsts);
2836 klass = mono_class_from_name (acfg->image, "System.Collections.Generic", "IEnumerable`1");
2837 if (klass)
2838 add_instances_of (acfg, klass, insts, ninsts);
2839
2840 /*
2841 * Add a managed-to-native wrapper of Array.GetGenericValueImpl<object>, which is
2842 * used for all instances of GetGenericValueImpl by the AOT runtime.
2843 */
2844 {
2845 MonoGenericContext ctx;
2846 MonoType *args [16];
2847 MonoMethod *get_method;
2848 MonoClass *array_klass = mono_array_class_get (mono_defaults.object_class, 1)->parent;
2849
2850 get_method = mono_class_get_method_from_name (array_klass, "GetGenericValueImpl", 2);
2851
2852 if (get_method) {
2853 memset (&ctx, 0, sizeof (ctx));
2854 args [0] = &mono_defaults.object_class->byval_arg;
2855 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
2856 add_extra_method (acfg, mono_marshal_get_native_wrapper (mono_class_inflate_generic_method (get_method, &ctx), TRUE, TRUE));
2857 }
2858 }
2859 }
2860 }
2861
2862 /*
2863 * is_direct_callable:
2864 *
2865 * Return whenever the method identified by JI is directly callable without
2866 * going through the PLT.
2867 */
2868 static gboolean
2869 is_direct_callable (MonoAotCompile *acfg, MonoMethod *method, MonoJumpInfo *patch_info)
2870 {
2871 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == acfg->image)) {
2872 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
2873 if (callee_cfg) {
2874 gboolean direct_callable = TRUE;
2875
2876 if (direct_callable && !(!callee_cfg->has_got_slots && (callee_cfg->method->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT)))
2877 direct_callable = FALSE;
2878 if ((callee_cfg->method->iflags & METHOD_IMPL_ATTRIBUTE_SYNCHRONIZED) && (!method || method->wrapper_type != MONO_WRAPPER_SYNCHRONIZED))
2879 // FIXME: Maybe call the wrapper directly ?
2880 direct_callable = FALSE;
2881
2882 if (direct_callable)
2883 return TRUE;
2884 }
2885 }
2886
2887 return FALSE;
2888 }
2889
2890 /*
2891 * emit_and_reloc_code:
2892 *
2893 * Emit the native code in CODE, handling relocations along the way. If GOT_ONLY
2894 * is true, calls are made through the GOT too. This is used for emitting trampolines
2895 * in full-aot mode, since calls made from trampolines couldn't go through the PLT,
2896 * since trampolines are needed to make PTL work.
2897 */
2898 static void
2899 emit_and_reloc_code (MonoAotCompile *acfg, MonoMethod *method, guint8 *code, guint32 code_len, MonoJumpInfo *relocs, gboolean got_only)
2900 {
2901 int i, pindex, start_index, method_index;
2902 GPtrArray *patches;
2903 MonoJumpInfo *patch_info;
2904 MonoMethodHeader *header;
2905 gboolean skip, direct_call;
2906 guint32 got_slot;
2907 char direct_call_target [128];
2908
2909 if (method) {
2910 header = mono_method_get_header (method);
2911
2912 method_index = get_method_index (acfg, method);
2913 }
2914
2915 /* Collect and sort relocations */
2916 patches = g_ptr_array_new ();
2917 for (patch_info = relocs; patch_info; patch_info = patch_info->next)
2918 g_ptr_array_add (patches, patch_info);
2919 g_ptr_array_sort (patches, compare_patches);
2920
2921 start_index = 0;
2922 for (i = 0; i < code_len; i++) {
2923 patch_info = NULL;
2924 for (pindex = start_index; pindex < patches->len; ++pindex) {
2925 patch_info = g_ptr_array_index (patches, pindex);
2926 if (patch_info->ip.i >= i)
2927 break;
2928 }
2929
2930 #ifdef MONO_ARCH_AOT_SUPPORTED
2931 skip = FALSE;
2932 if (patch_info && (patch_info->ip.i == i) && (pindex < patches->len)) {
2933 start_index = pindex;
2934
2935 switch (patch_info->type) {
2936 case MONO_PATCH_INFO_NONE:
2937 break;
2938 case MONO_PATCH_INFO_GOT_OFFSET: {
2939 int code_size;
2940
2941 arch_emit_got_offset (acfg, code + i, &code_size);
2942 i += code_size - 1;
2943 skip = TRUE;
2944 patch_info->type = MONO_PATCH_INFO_NONE;
2945 break;
2946 }
2947 default: {
2948 /*
2949 * If this patch is a call, try emitting a direct call instead of
2950 * through a PLT entry. This is possible if the called method is in
2951 * the same assembly and requires no initialization.
2952 */
2953 direct_call = FALSE;
2954 if ((patch_info->type == MONO_PATCH_INFO_METHOD) && (patch_info->data.method->klass->image == acfg->image)) {
2955 if (!got_only && is_direct_callable (acfg, method, patch_info)) {
2956 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, patch_info->data.method);
2957 //printf ("DIRECT: %s %s\n", method ? mono_method_full_name (method, TRUE) : "", mono_method_full_name (callee_cfg->method, TRUE));
2958 direct_call = TRUE;
2959 sprintf (direct_call_target, "%s", callee_cfg->asm_symbol);
2960 patch_info->type = MONO_PATCH_INFO_NONE;
2961 acfg->stats.direct_calls ++;
2962 }
2963
2964 acfg->stats.all_calls ++;
2965 }
2966
2967 if (!got_only && !direct_call) {
2968 MonoPltEntry *plt_entry = get_plt_entry (acfg, patch_info);
2969 if (plt_entry) {
2970 /* This patch has a PLT entry, so we must emit a call to the PLT entry */
2971 direct_call = TRUE;
2972 sprintf (direct_call_target, "%s", plt_entry->symbol);
2973
2974 /* Nullify the patch */
2975 patch_info->type = MONO_PATCH_INFO_NONE;
2976 }
2977 }
2978
2979 if (direct_call) {
2980 int call_size;
2981
2982 arch_emit_direct_call (acfg, direct_call_target, &call_size);
2983 i += call_size - 1;
2984 } else {
2985 int code_size;
2986
2987 got_slot = get_got_offset (acfg, patch_info);
2988
2989 arch_emit_got_access (acfg, code + i, got_slot, &code_size);
2990 i += code_size - 1;
2991 }
2992 skip = TRUE;
2993 }
2994 }
2995 }
2996 #endif /* MONO_ARCH_AOT_SUPPORTED */
2997
2998 if (!skip) {
2999 /* Find next patch */
3000 patch_info = NULL;
3001 for (pindex = start_index; pindex < patches->len; ++pindex) {
3002 patch_info = g_ptr_array_index (patches, pindex);
3003 if (patch_info->ip.i >= i)
3004 break;
3005 }
3006
3007 /* Try to emit multiple bytes at once */
3008 if (pindex < patches->len && patch_info->ip.i > i) {
3009 emit_bytes (acfg, code + i, patch_info->ip.i - i);
3010 i = patch_info->ip.i - 1;
3011 } else {
3012 emit_bytes (acfg, code + i, 1);
3013 }
3014 }
3015 }
3016 }
3017
3018 /*
3019 * sanitize_symbol:
3020 *
3021 * Modify SYMBOL so it only includes characters permissible in symbols.
3022 */
3023 static void
3024 sanitize_symbol (char *symbol)
3025 {
3026 int i, len = strlen (symbol);
3027
3028 for (i = 0; i < len; ++i)
3029 if (!isalnum (symbol [i]) && (symbol [i] != '_'))
3030 symbol [i] = '_';
3031 }
3032
3033 static char*
3034 get_debug_sym (MonoMethod *method, const char *prefix, GHashTable *cache)
3035 {
3036 char *name1, *name2, *cached;
3037 int i, j, len, count;
3038
3039 name1 = mono_method_full_name (method, TRUE);
3040 len = strlen (name1);
3041 name2 = malloc (strlen (prefix) + len + 16);
3042 memcpy (name2, prefix, strlen (prefix));
3043 j = strlen (prefix);
3044 for (i = 0; i < len; ++i) {
3045 if (isalnum (name1 [i])) {
3046 name2 [j ++] = name1 [i];
3047 } else if (name1 [i] == ' ' && name1 [i + 1] == '(' && name1 [i + 2] == ')') {
3048 i += 2;
3049 } else if (name1 [i] == ',' && name1 [i + 1] == ' ') {
3050 name2 [j ++] = '_';
3051 i++;
3052 } else if (name1 [i] == '(' || name1 [i] == ')' || name1 [i] == '>') {
3053 } else
3054 name2 [j ++] = '_';
3055 }
3056 name2 [j] = '\0';
3057
3058 g_free (name1);
3059
3060 count = 0;
3061 while (g_hash_table_lookup (cache, name2)) {
3062 sprintf (name2 + j, "_%d", count);
3063 count ++;
3064 }
3065
3066 cached = g_strdup (name2);
3067 g_hash_table_insert (cache, cached, cached);
3068
3069 return name2;
3070 }
3071
3072 static void
3073 emit_method_code (MonoAotCompile *acfg, MonoCompile *cfg)
3074 {
3075 MonoMethod *method;
3076 int method_index;
3077 guint8 *code;
3078 char *debug_sym = NULL;
3079 char symbol [128];
3080 int func_alignment = AOT_FUNC_ALIGNMENT;
3081 MonoMethodHeader *header;
3082
3083 method = cfg->orig_method;
3084 code = cfg->native_code;
3085 header = mono_method_get_header (method);
3086
3087 method_index = get_method_index (acfg, method);
3088
3089 /* Make the labels local */
3090 sprintf (symbol, "%s", cfg->asm_symbol);
3091
3092 emit_section_change (acfg, ".text", 0);
3093 emit_alignment (acfg, func_alignment);
3094 emit_label (acfg, symbol);
3095
3096 if (acfg->aot_opts.write_symbols) {
3097 /*
3098 * Write a C style symbol for every method, this has two uses:
3099 * - it works on platforms where the dwarf debugging info is not
3100 * yet supported.
3101 * - it allows the setting of breakpoints of aot-ed methods.
3102 */
3103 debug_sym = get_debug_sym (method, "", acfg->method_label_hash);
3104
3105 sprintf (symbol, "%sme_%x", acfg->temp_prefix, method_index);
3106 emit_local_symbol (acfg, debug_sym, symbol, TRUE);
3107 emit_label (acfg, debug_sym);
3108 }
3109
3110 if (cfg->verbose_level > 0)
3111 g_print ("Method %s emitted as %s\n", mono_method_full_name (method, TRUE), symbol);
3112
3113 acfg->stats.code_size += cfg->code_len;
3114
3115 acfg->cfgs [method_index]->got_offset = acfg->got_offset;
3116
3117 emit_and_reloc_code (acfg, method, code, cfg->code_len, cfg->patch_info, FALSE);
3118
3119 emit_line (acfg);
3120
3121 if (acfg->aot_opts.write_symbols) {
3122 emit_symbol_size (acfg, debug_sym, ".");
3123 g_free (debug_sym);
3124 }
3125
3126 sprintf (symbol, "%sme_%x", acfg->temp_prefix, method_index);
3127 emit_label (acfg, symbol);
3128 }
3129
3130 /**
3131 * encode_patch:
3132 *
3133 * Encode PATCH_INFO into its disk representation.
3134 */
3135 static void
3136 encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info, guint8 *buf, guint8 **endbuf)
3137 {
3138 guint8 *p = buf;
3139
3140 switch (patch_info->type) {
3141 case MONO_PATCH_INFO_NONE:
3142 break;
3143 case MONO_PATCH_INFO_IMAGE:
3144 encode_value (get_image_index (acfg, patch_info->data.image), p, &p);
3145 break;
3146 case MONO_PATCH_INFO_MSCORLIB_GOT_ADDR:
3147 break;
3148 case MONO_PATCH_INFO_METHOD_REL:
3149 encode_value ((gint)patch_info->data.offset, p, &p);
3150 break;
3151 case MONO_PATCH_INFO_SWITCH: {
3152 gpointer *table = (gpointer *)patch_info->data.table->table;
3153 int k;
3154
3155 encode_value (patch_info->data.table->table_size, p, &p);
3156 for (k = 0; k < patch_info->data.table->table_size; k++)
3157 encode_value ((int)(gssize)table [k], p, &p);
3158 break;
3159 }
3160 case MONO_PATCH_INFO_METHODCONST:
3161 case MONO_PATCH_INFO_METHOD:
3162 case MONO_PATCH_INFO_METHOD_JUMP:
3163 case MONO_PATCH_INFO_ICALL_ADDR:
3164 case MONO_PATCH_INFO_METHOD_RGCTX:
3165 encode_method_ref (acfg, patch_info->data.method, p, &p);
3166 break;
3167 case MONO_PATCH_INFO_INTERNAL_METHOD:
3168 case MONO_PATCH_INFO_JIT_ICALL_ADDR: {
3169 guint32 len = strlen (patch_info->data.name);
3170
3171 encode_value (len, p, &p);
3172
3173 memcpy (p, patch_info->data.name, len);
3174 p += len;
3175 *p++ = '\0';
3176 break;
3177 }
3178 case MONO_PATCH_INFO_LDSTR: {
3179 guint32 image_index = get_image_index (acfg, patch_info->data.token->image);
3180 guint32 token = patch_info->data.token->token;
3181 g_assert (mono_metadata_token_code (token) == MONO_TOKEN_STRING);
3182 encode_value (image_index, p, &p);
3183 encode_value (patch_info->data.token->token - MONO_TOKEN_STRING, p, &p);
3184 break;
3185 }
3186 case MONO_PATCH_INFO_RVA:
3187 case MONO_PATCH_INFO_DECLSEC:
3188 case MONO_PATCH_INFO_LDTOKEN:
3189 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
3190 encode_value (get_image_index (acfg, patch_info->data.token->image), p, &p);
3191 encode_value (patch_info->data.token->token, p, &p);
3192 encode_value (patch_info->data.token->has_context, p, &p);
3193 if (patch_info->data.token->has_context)
3194 encode_generic_context (acfg, &patch_info->data.token->context, p, &p);
3195 break;
3196 case MONO_PATCH_INFO_EXC_NAME: {
3197 MonoClass *ex_class;
3198
3199 ex_class =
3200 mono_class_from_name (mono_defaults.exception_class->image,
3201 "System", patch_info->data.target);
3202 g_assert (ex_class);
3203 encode_klass_ref (acfg, ex_class, p, &p);
3204 break;
3205 }
3206 case MONO_PATCH_INFO_R4:
3207 encode_value (*((guint32 *)patch_info->data.target), p, &p);
3208 break;
3209 case MONO_PATCH_INFO_R8:
3210 encode_value (((guint32 *)patch_info->data.target) [MINI_LS_WORD_IDX], p, &p);
3211 encode_value (((guint32 *)patch_info->data.target) [MINI_MS_WORD_IDX], p, &p);
3212 break;
3213 case MONO_PATCH_INFO_VTABLE:
3214 case MONO_PATCH_INFO_CLASS:
3215 case MONO_PATCH_INFO_IID:
3216 case MONO_PATCH_INFO_ADJUSTED_IID:
3217 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
3218 break;
3219 case MONO_PATCH_INFO_CLASS_INIT:
3220 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
3221 encode_klass_ref (acfg, patch_info->data.klass, p, &p);
3222 break;
3223 case MONO_PATCH_INFO_FIELD:
3224 case MONO_PATCH_INFO_SFLDA:
3225 encode_field_info (acfg, patch_info->data.field, p, &p);
3226 break;
3227 case MONO_PATCH_INFO_INTERRUPTION_REQUEST_FLAG:
3228 break;
3229 case MONO_PATCH_INFO_RGCTX_FETCH: {
3230 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
3231
3232 encode_method_ref (acfg, entry->method, p, &p);
3233 encode_value (entry->in_mrgctx, p, &p);
3234 encode_value (entry->info_type, p, &p);
3235 encode_value (entry->data->type, p, &p);
3236 encode_patch (acfg, entry->data, p, &p);
3237 break;
3238 }
3239 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
3240 case MONO_PATCH_INFO_MONITOR_ENTER:
3241 case MONO_PATCH_INFO_MONITOR_EXIT:
3242 case MONO_PATCH_INFO_SEQ_POINT_INFO:
3243 break;
3244 case MONO_PATCH_INFO_LLVM_IMT_TRAMPOLINE:
3245 encode_method_ref (acfg, patch_info->data.imt_tramp->method, p, &p);
3246 encode_value (patch_info->data.imt_tramp->vt_offset, p, &p);
3247 break;
3248 default:
3249 g_warning ("unable to handle jump info %d", patch_info->type);
3250 g_assert_not_reached ();
3251 }
3252
3253 *endbuf = p;
3254 }
3255
3256 static void
3257 encode_patch_list (MonoAotCompile *acfg, GPtrArray *patches, int n_patches, int first_got_offset, guint8 *buf, guint8 **endbuf)
3258 {
3259 guint8 *p = buf;
3260 guint32 pindex, offset;
3261 MonoJumpInfo *patch_info;
3262
3263 encode_value (n_patches, p, &p);
3264
3265 for (pindex = 0; pindex < patches->len; ++pindex) {
3266 patch_info = g_ptr_array_index (patches, pindex);
3267
3268 if (patch_info->type == MONO_PATCH_INFO_NONE || patch_info->type == MONO_PATCH_INFO_BB)
3269 /* Nothing to do */
3270 continue;
3271
3272 offset = get_got_offset (acfg, patch_info);
3273 encode_value (offset, p, &p);
3274 }
3275
3276 *endbuf = p;
3277 }
3278
3279 static void
3280 emit_method_info (MonoAotCompile *acfg, MonoCompile *cfg)
3281 {
3282 MonoMethod *method;
3283 GList *l;
3284 int pindex, buf_size, n_patches;
3285 guint8 *code;
3286 GPtrArray *patches;
3287 MonoJumpInfo *patch_info;
3288 MonoMethodHeader *header;
3289 guint32 method_index;
3290 guint8 *p, *buf;
3291 guint32 first_got_offset;
3292
3293 method = cfg->orig_method;
3294 code = cfg->native_code;
3295 header = mono_method_get_header (method);
3296
3297 method_index = get_method_index (acfg, method);
3298
3299 /* Sort relocations */
3300 patches = g_ptr_array_new ();
3301 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next)
3302 g_ptr_array_add (patches, patch_info);
3303 g_ptr_array_sort (patches, compare_patches);
3304
3305 first_got_offset = acfg->cfgs [method_index]->got_offset;
3306
3307 /**********************/
3308 /* Encode method info */
3309 /**********************/
3310
3311 buf_size = (patches->len < 1000) ? 40960 : 40960 + (patches->len * 64);
3312 p = buf = g_malloc (buf_size);
3313
3314 if (mono_class_get_cctor (method->klass))
3315 encode_klass_ref (acfg, method->klass, p, &p);
3316 else
3317 /* Not needed when loading the method */
3318 encode_value (0, p, &p);
3319
3320 /* String table */
3321 if (cfg->opt & MONO_OPT_SHARED) {
3322 encode_value (g_list_length (cfg->ldstr_list), p, &p);
3323 for (l = cfg->ldstr_list; l; l = l->next) {
3324 encode_value ((long)l->data, p, &p);
3325 }
3326 }
3327 else
3328 /* Used only in shared mode */
3329 g_assert (!cfg->ldstr_list);
3330
3331 n_patches = 0;
3332 for (pindex = 0; pindex < patches->len; ++pindex) {
3333 patch_info = g_ptr_array_index (patches, pindex);
3334
3335 if ((patch_info->type == MONO_PATCH_INFO_GOT_OFFSET) ||
3336 (patch_info->type == MONO_PATCH_INFO_NONE)) {
3337 patch_info->type = MONO_PATCH_INFO_NONE;
3338 /* Nothing to do */
3339 continue;
3340 }
3341
3342 if ((patch_info->type == MONO_PATCH_INFO_IMAGE) && (patch_info->data.image == acfg->image)) {
3343 /* Stored in a GOT slot initialized at module load time */
3344 patch_info->type = MONO_PATCH_INFO_NONE;
3345 continue;
3346 }
3347
3348 if (is_plt_patch (patch_info)) {
3349 /* Calls are made through the PLT */
3350 patch_info->type = MONO_PATCH_INFO_NONE;
3351 continue;
3352 }
3353
3354 n_patches ++;
3355 }
3356
3357 if (n_patches)
3358 g_assert (cfg->has_got_slots);
3359
3360 encode_patch_list (acfg, patches, n_patches, first_got_offset, p, &p);
3361
3362 acfg->stats.info_size += p - buf;
3363
3364 g_assert (p - buf < buf_size);
3365
3366 cfg->method_info_offset = add_to_blob (acfg, buf, p - buf);
3367 g_free (buf);
3368 }
3369
3370 static guint32
3371 get_unwind_info_offset (MonoAotCompile *acfg, guint8 *encoded, guint32 encoded_len)
3372 {
3373 guint32 cache_index;
3374 guint32 offset;
3375
3376 /* Reuse the unwind module to canonize and store unwind info entries */
3377 cache_index = mono_cache_unwind_info (encoded, encoded_len);
3378
3379 /* Use +/- 1 to distinguish 0s from missing entries */
3380 offset = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1)));
3381 if (offset)
3382 return offset - 1;
3383 else {
3384 guint8 buf [16];
3385 guint8 *p;
3386
3387 /*
3388 * It would be easier to use assembler symbols, but the caller needs an
3389 * offset now.
3390 */
3391 offset = acfg->unwind_info_offset;
3392 g_hash_table_insert (acfg->unwind_info_offsets, GUINT_TO_POINTER (cache_index + 1), GUINT_TO_POINTER (offset + 1));
3393 g_ptr_array_add (acfg->unwind_ops, GUINT_TO_POINTER (cache_index));
3394
3395 p = buf;
3396 encode_value (encoded_len, p, &p);
3397
3398 acfg->unwind_info_offset += encoded_len + (p - buf);
3399 return offset;
3400 }
3401 }
3402
3403 static void
3404 emit_exception_debug_info (MonoAotCompile *acfg, MonoCompile *cfg)
3405 {
3406 MonoMethod *method;
3407 int i, k, buf_size, method_index;
3408 guint32 debug_info_size;
3409 guint8 *code;
3410 MonoMethodHeader *header;
3411 guint8 *p, *buf, *debug_info;
3412 MonoJitInfo *jinfo = cfg->jit_info;
3413 guint32 flags;
3414 gboolean use_unwind_ops = FALSE;
3415 MonoSeqPointInfo *seq_points;
3416
3417 method = cfg->orig_method;
3418 code = cfg->native_code;
3419 header = mono_method_get_header (method);
3420
3421 method_index = get_method_index (acfg, method);
3422
3423 if (!acfg->aot_opts.nodebug) {
3424 mono_debug_serialize_debug_info (cfg, &debug_info, &debug_info_size);
3425 } else {
3426 debug_info = NULL;
3427 debug_info_size = 0;
3428 }
3429
3430 seq_points = cfg->seq_point_info;
3431
3432 buf_size = header->num_clauses * 256 + debug_info_size + 1024 + (seq_points ? (seq_points->len * 64) : 0);
3433 p = buf = g_malloc (buf_size);
3434
3435 #ifdef MONO_ARCH_HAVE_XP_UNWIND
3436 use_unwind_ops = cfg->unwind_ops != NULL;
3437 #endif
3438
3439 flags = (jinfo->has_generic_jit_info ? 1 : 0) | (use_unwind_ops ? 2 : 0) | (header->num_clauses ? 4 : 0) | (seq_points ? 8 : 0) | (cfg->compile_llvm ? 16 : 0) | (jinfo->has_try_block_holes ? 32 : 0);
3440
3441 encode_value (flags, p, &p);
3442
3443 if (use_unwind_ops) {
3444 guint32 encoded_len;
3445 guint8 *encoded;
3446
3447 /*
3448 * This is a duplicate of the data in the .debug_frame section, but that
3449 * section cannot be accessed using the dl interface.
3450 */
3451 encoded = mono_unwind_ops_encode (cfg->unwind_ops, &encoded_len);
3452 encode_value (get_unwind_info_offset (acfg, encoded, encoded_len), p, &p);
3453 g_free (encoded);
3454 } else {
3455 encode_value (jinfo->used_regs, p, &p);
3456 }
3457
3458 /*Encode the number of holes before the number of clauses to make decoding easier*/
3459 if (jinfo->has_try_block_holes) {
3460 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
3461 encode_value (table->num_holes, p, &p);
3462 }
3463
3464 /* Exception table */
3465 if (cfg->compile_llvm) {
3466 /* The assembly might be CIL stripped so emit the data ourselves */
3467 if (header->num_clauses)
3468 encode_value (header->num_clauses, p, &p);
3469
3470 for (k = 0; k < header->num_clauses; ++k) {
3471 MonoExceptionClause *clause;
3472
3473 clause = &header->clauses [k];
3474
3475 encode_value (clause->flags, p, &p);
3476 if (clause->data.catch_class) {
3477 encode_value (1, p, &p);
3478 encode_klass_ref (acfg, clause->data.catch_class, p, &p);
3479 } else {
3480 encode_value (0, p, &p);
3481 }
3482 }
3483 } else {
3484 if (jinfo->num_clauses)
3485 encode_value (jinfo->num_clauses, p, &p);
3486
3487 for (k = 0; k < jinfo->num_clauses; ++k) {
3488 MonoJitExceptionInfo *ei = &jinfo->clauses [k];
3489
3490 encode_value (ei->flags, p, &p);
3491 encode_value (ei->exvar_offset, p, &p);
3492
3493 if (ei->flags == MONO_EXCEPTION_CLAUSE_FILTER || ei->flags == MONO_EXCEPTION_CLAUSE_FINALLY)
3494 encode_value ((gint)((guint8*)ei->data.filter - code), p, &p);
3495 else {
3496 if (ei->data.catch_class) {
3497 encode_value (1, p, &p);
3498 encode_klass_ref (acfg, ei->data.catch_class, p, &p);
3499 } else {
3500 encode_value (0, p, &p);
3501 }
3502 }
3503
3504 encode_value ((gint)((guint8*)ei->try_start - code), p, &p);
3505 encode_value ((gint)((guint8*)ei->try_end - code), p, &p);
3506 encode_value ((gint)((guint8*)ei->handler_start - code), p, &p);
3507 }
3508 }
3509
3510 if (jinfo->has_generic_jit_info) {
3511 MonoGenericJitInfo *gi = mono_jit_info_get_generic_jit_info (jinfo);
3512
3513 encode_value (gi->has_this ? 1 : 0, p, &p);
3514 encode_value (gi->this_reg, p, &p);
3515 encode_value (gi->this_offset, p, &p);
3516
3517 /*
3518 * Need to encode jinfo->method too, since it is not equal to 'method'
3519 * when using generic sharing.
3520 */
3521 encode_method_ref (acfg, jinfo->method, p, &p);
3522 }
3523
3524 if (jinfo->has_try_block_holes) {
3525 MonoTryBlockHoleTableJitInfo *table = mono_jit_info_get_try_block_hole_table_info (jinfo);
3526 for (i = 0; i < table->num_holes; ++i) {
3527 MonoTryBlockHoleJitInfo *hole = &table->holes [i];
3528 encode_value (hole->clause, p, &p);
3529 encode_value (hole->length, p, &p);
3530 encode_value (hole->offset, p, &p);
3531 }
3532 }
3533
3534 if (seq_points) {
3535 int il_offset, native_offset, last_il_offset, last_native_offset, j;
3536
3537 encode_value (seq_points->len, p, &p);
3538 last_il_offset = last_native_offset = 0;
3539 for (i = 0; i < seq_points->len; ++i) {
3540 SeqPoint *sp = &seq_points->seq_points [i];
3541 il_offset = sp->il_offset;
3542 native_offset = sp->native_offset;
3543 encode_value (il_offset - last_il_offset, p, &p);
3544 encode_value (native_offset - last_native_offset, p, &p);
3545 last_il_offset = il_offset;
3546 last_native_offset = native_offset;
3547
3548 encode_value (sp->next_len, p, &p);
3549 for (j = 0; j < sp->next_len; ++j)
3550 encode_value (sp->next [j], p, &p);
3551 }
3552 }
3553
3554
3555 g_assert (debug_info_size < buf_size);
3556
3557 encode_value (debug_info_size, p, &p);
3558 if (debug_info_size) {
3559 memcpy (p, debug_info, debug_info_size);
3560 p += debug_info_size;
3561 g_free (debug_info);
3562 }
3563
3564 acfg->stats.ex_info_size += p - buf;
3565
3566 g_assert (p - buf < buf_size);
3567
3568 /* Emit info */
3569 cfg->ex_info_offset = add_to_blob (acfg, buf, p - buf);
3570 g_free (buf);
3571 }
3572
3573 static guint32
3574 emit_klass_info (MonoAotCompile *acfg, guint32 token)
3575 {
3576 MonoClass *klass = mono_class_get (acfg->image, token);
3577 guint8 *p, *buf;
3578 int i, buf_size, res;
3579 gboolean no_special_static, cant_encode;
3580 gpointer iter = NULL;
3581
3582 if (!klass)
3583 return add_to_blob (acfg, NULL, 0);
3584
3585 buf_size = 10240 + (klass->vtable_size * 16);
3586 p = buf = g_malloc (buf_size);
3587
3588 g_assert (klass);
3589
3590 mono_class_init (klass);
3591
3592 mono_class_get_nested_types (klass, &iter);
3593 g_assert (klass->nested_classes_inited);
3594
3595 mono_class_setup_vtable (klass);
3596
3597 /*
3598 * Emit all the information which is required for creating vtables so
3599 * the runtime does not need to create the MonoMethod structures which
3600 * take up a lot of space.
3601 */
3602
3603 no_special_static = !mono_class_has_special_static_fields (klass);
3604
3605 /* Check whenever we have enough info to encode the vtable */
3606 cant_encode = FALSE;
3607 for (i = 0; i < klass->vtable_size; ++i) {
3608 MonoMethod *cm = klass->vtable [i];
3609
3610 if (cm && mono_method_signature (cm)->is_inflated && !g_hash_table_lookup (acfg->token_info_hash, cm))
3611 cant_encode = TRUE;
3612 }
3613
3614 if (klass->generic_container || cant_encode) {
3615 encode_value (-1, p, &p);
3616 } else {
3617 encode_value (klass->vtable_size, p, &p);
3618 encode_value ((klass->generic_container ? (1 << 8) : 0) | (no_special_static << 7) | (klass->has_static_refs << 6) | (klass->has_references << 5) | ((klass->blittable << 4) | ((klass->ext && klass->ext->nested_classes) ? 1 : 0) << 3) | (klass->has_cctor << 2) | (klass->has_finalize << 1) | klass->ghcimpl, p, &p);
3619 if (klass->has_cctor)
3620 encode_method_ref (acfg, mono_class_get_cctor (klass), p, &p);
3621 if (klass->has_finalize)
3622 encode_method_ref (acfg, mono_class_get_finalizer (klass), p, &p);
3623
3624 encode_value (klass->instance_size, p, &p);
3625 encode_value (mono_class_data_size (klass), p, &p);
3626 encode_value (klass->packing_size, p, &p);
3627 encode_value (klass->min_align, p, &p);
3628
3629 for (i = 0; i < klass->vtable_size; ++i) {
3630 MonoMethod *cm = klass->vtable [i];
3631
3632 if (cm)
3633 encode_method_ref (acfg, cm, p, &p);
3634 else
3635 encode_value (0, p, &p);
3636 }
3637 }
3638
3639 acfg->stats.class_info_size += p - buf;
3640
3641 g_assert (p - buf < buf_size);
3642 res = add_to_blob (acfg, buf, p - buf);
3643 g_free (buf);
3644
3645 return res;
3646 }
3647
3648 /*
3649 * Calls made from AOTed code are routed through a table of jumps similar to the
3650 * ELF PLT (Program Linkage Table). The differences are the following:
3651 * - the ELF PLT entries make an indirect jump though the GOT so they expect the
3652 * GOT pointer to be in EBX. We want to avoid this, so our table contains direct
3653 * jumps. This means the jumps need to be patched when the address of the callee is
3654 * known. Initially the PLT entries jump to code which transfers control to the
3655 * AOT runtime through the first PLT entry.
3656 */
3657 static void
3658 emit_plt (MonoAotCompile *acfg)
3659 {
3660 char symbol [128];
3661 int i;
3662 GHashTable *cache;
3663
3664 cache = g_hash_table_new (g_str_hash, g_str_equal);
3665
3666 emit_line (acfg);
3667 sprintf (symbol, "plt");
3668
3669 emit_section_change (acfg, ".text", 0);
3670 emit_global (acfg, symbol, TRUE);
3671 emit_alignment (acfg, 16);
3672 emit_label (acfg, symbol);
3673 emit_label (acfg, acfg->plt_symbol);
3674
3675 for (i = 0; i < acfg->plt_offset; ++i) {
3676 char label [128];
3677 char *debug_sym = NULL;
3678 MonoPltEntry *plt_entry = NULL;
3679 MonoJumpInfo *ji;
3680
3681 if (i == 0) {
3682 /*
3683 * The first plt entry is used to transfer code to the AOT loader.
3684 */
3685 arch_emit_plt_entry (acfg, i);
3686 continue;
3687 }
3688
3689 plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
3690 ji = plt_entry->ji;
3691 sprintf (label, "%s", plt_entry->symbol);
3692
3693 if (acfg->llvm) {
3694 /*
3695 * If the target is directly callable, alias the plt symbol to point to
3696 * the method code.
3697 * FIXME: Use this to simplify emit_and_reloc_code ().
3698 * FIXME: Avoid the got slot.
3699 * FIXME: Add support to the binary writer.
3700 */
3701 if (ji && is_direct_callable (acfg, NULL, ji) && !acfg->use_bin_writer) {
3702 MonoCompile *callee_cfg = g_hash_table_lookup (acfg->method_to_cfg, ji->data.method);
3703 fprintf (acfg->fp, "\n.set %s, %s\n", label, callee_cfg->asm_symbol);
3704 continue;
3705 }
3706 }
3707
3708 emit_label (acfg, label);
3709
3710 if (acfg->aot_opts.write_symbols) {
3711 switch (ji->type) {
3712 case MONO_PATCH_INFO_METHOD:
3713 debug_sym = get_debug_sym (ji->data.method, "plt_", cache);
3714 break;
3715 case MONO_PATCH_INFO_INTERNAL_METHOD:
3716 debug_sym = g_strdup_printf ("plt__jit_icall_%s", ji->data.name);
3717 break;
3718 case MONO_PATCH_INFO_CLASS_INIT:
3719 debug_sym = g_strdup_printf ("plt__class_init_%s", mono_type_get_name (&ji->data.klass->byval_arg));
3720 sanitize_symbol (debug_sym);
3721 break;
3722 case MONO_PATCH_INFO_RGCTX_FETCH:
3723 debug_sym = g_strdup_printf ("plt__rgctx_fetch_%d", acfg->label_generator ++);
3724 break;
3725 case MONO_PATCH_INFO_ICALL_ADDR: {
3726 char *s = get_debug_sym (ji->data.method, "", cache);
3727
3728 debug_sym = g_strdup_printf ("plt__icall_native_%s", s);
3729 g_free (s);
3730 break;
3731 }
3732 case MONO_PATCH_INFO_JIT_ICALL_ADDR:
3733 debug_sym = g_strdup_printf ("plt__jit_icall_native_%s", ji->data.name);
3734 break;
3735 case MONO_PATCH_INFO_GENERIC_CLASS_INIT:
3736 debug_sym = g_strdup_printf ("plt__generic_class_init");
3737 break;
3738 default:
3739 break;
3740 }
3741
3742 if (debug_sym) {
3743 emit_local_symbol (acfg, debug_sym, NULL, TRUE);
3744 emit_label (acfg, debug_sym);
3745 }
3746 }
3747
3748 arch_emit_plt_entry (acfg, i);
3749
3750 if (debug_sym) {
3751 emit_symbol_size (acfg, debug_sym, ".");
3752 g_free (debug_sym);
3753 }
3754 }
3755
3756 emit_symbol_size (acfg, acfg->plt_symbol, ".");
3757
3758 sprintf (symbol, "plt_end");
3759 emit_global (acfg, symbol, TRUE);
3760 emit_label (acfg, symbol);
3761
3762 g_hash_table_destroy (cache);
3763 }
3764
3765 static G_GNUC_UNUSED void
3766 emit_trampoline (MonoAotCompile *acfg, int got_offset, MonoTrampInfo *info)
3767 {
3768 char start_symbol [256];
3769 char symbol [256];
3770 guint32 buf_size, info_offset;
3771 MonoJumpInfo *patch_info;
3772 guint8 *buf, *p;
3773 GPtrArray *patches;
3774 char *name;
3775 guint8 *code;
3776 guint32 code_size;
3777 MonoJumpInfo *ji;
3778 GSList *unwind_ops;
3779
3780 name = info->name;
3781 code = info->code;
3782 code_size = info->code_size;
3783 ji = info->ji;
3784 unwind_ops = info->unwind_ops;
3785
3786 /* Emit code */
3787
3788 sprintf (start_symbol, "%s", name);
3789
3790 emit_section_change (acfg, ".text", 0);
3791 emit_global (acfg, start_symbol, TRUE);
3792 emit_alignment (acfg, 16);
3793 emit_label (acfg, start_symbol);
3794
3795 sprintf (symbol, "%snamed_%s", acfg->temp_prefix, name);
3796 emit_label (acfg, symbol);
3797
3798 /*
3799 * The code should access everything through the GOT, so we pass
3800 * TRUE here.
3801 */
3802 emit_and_reloc_code (acfg, NULL, code, code_size, ji, TRUE);
3803
3804 emit_symbol_size (acfg, start_symbol, ".");
3805
3806 /* Emit info */
3807
3808 /* Sort relocations */
3809 patches = g_ptr_array_new ();
3810 for (patch_info = ji; patch_info; patch_info = patch_info->next)
3811 if (patch_info->type != MONO_PATCH_INFO_NONE)
3812 g_ptr_array_add (patches, patch_info);
3813 g_ptr_array_sort (patches, compare_patches);
3814
3815 buf_size = patches->len * 128 + 128;
3816 buf = g_malloc (buf_size);
3817 p = buf;
3818
3819 encode_patch_list (acfg, patches, patches->len, got_offset, p, &p);
3820 g_assert (p - buf < buf_size);
3821
3822 sprintf (symbol, "%s_p", name);
3823
3824 info_offset = add_to_blob (acfg, buf, p - buf);
3825
3826 emit_section_change (acfg, RODATA_SECT, 0);
3827 emit_global (acfg, symbol, FALSE);
3828 emit_label (acfg, symbol);
3829
3830 emit_int32 (acfg, info_offset);
3831
3832 /* Emit debug info */
3833 if (unwind_ops) {
3834 char symbol2 [256];
3835
3836 sprintf (symbol, "%s", name);
3837 sprintf (symbol2, "%snamed_%s", acfg->temp_prefix, name);
3838
3839 if (acfg->dwarf)
3840 mono_dwarf_writer_emit_trampoline (acfg->dwarf, symbol, symbol2, NULL, NULL, code_size, unwind_ops);
3841 }
3842 }
3843
3844 static void
3845 emit_trampolines (MonoAotCompile *acfg)
3846 {
3847 char symbol [256];
3848 int i, tramp_got_offset;
3849 MonoAotTrampoline ntype;
3850 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3851 int tramp_type;
3852 guint8 *code;
3853 #endif
3854
3855 if (!acfg->aot_opts.full_aot)
3856 return;
3857
3858 g_assert (acfg->image->assembly);
3859
3860 /* Currently, we emit most trampolines into the mscorlib AOT image. */
3861 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
3862 #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
3863 MonoTrampInfo *info;
3864
3865 /*
3866 * Emit the generic trampolines.
3867 *
3868 * We could save some code by treating the generic trampolines as a wrapper
3869 * method, but that approach has its own complexities, so we choose the simpler
3870 * method.
3871 */
3872 for (tramp_type = 0; tramp_type < MONO_TRAMPOLINE_NUM; ++tramp_type) {
3873 mono_arch_create_generic_trampoline (tramp_type, &info, TRUE);
3874 emit_trampoline (acfg, acfg->got_offset, info);
3875 }
3876
3877 mono_arch_get_nullified_class_init_trampoline (&info);
3878 emit_trampoline (acfg, acfg->got_offset, info);
3879 #if defined(MONO_ARCH_MONITOR_OBJECT_REG)
3880 mono_arch_create_monitor_enter_trampoline (&info, TRUE);
3881 emit_trampoline (acfg, acfg->got_offset, info);
3882 mono_arch_create_monitor_exit_trampoline (&info, TRUE);
3883 emit_trampoline (acfg, acfg->got_offset, info);
3884 #endif
3885
3886 mono_arch_create_generic_class_init_trampoline (&info, TRUE);
3887 emit_trampoline (acfg, acfg->got_offset, info);
3888
3889 /* Emit the exception related code pieces */
3890 code = mono_arch_get_restore_context (&info, TRUE);
3891 emit_trampoline (acfg, acfg->got_offset, info);
3892 code = mono_arch_get_call_filter (&info, TRUE);
3893 emit_trampoline (acfg, acfg->got_offset, info);
3894 code = mono_arch_get_throw_exception (&info, TRUE);
3895 emit_trampoline (acfg, acfg->got_offset, info);
3896 code = mono_arch_get_rethrow_exception (&info, TRUE);
3897 emit_trampoline (acfg, acfg->got_offset, info);
3898 code = mono_arch_get_throw_corlib_exception (&info, TRUE);
3899 emit_trampoline (acfg, acfg->got_offset, info);
3900
3901 #if defined(MONO_ARCH_HAVE_GET_TRAMPOLINES)
3902 {
3903 GSList *l = mono_arch_get_trampolines (TRUE);
3904
3905 while (l) {
3906 MonoTrampInfo *info = l->data;
3907
3908 emit_trampoline (acfg, acfg->got_offset, info);
3909 l = l->next;
3910 }
3911 }
3912 #endif
3913
3914 for (i = 0; i < 128; ++i) {
3915 int offset;
3916
3917 offset = MONO_RGCTX_SLOT_MAKE_RGCTX (i);
3918 code = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
3919 emit_trampoline (acfg, acfg->got_offset, info);
3920
3921 offset = MONO_RGCTX_SLOT_MAKE_MRGCTX (i);
3922 code = mono_arch_create_rgctx_lazy_fetch_trampoline (offset, &info, TRUE);
3923 emit_trampoline (acfg, acfg->got_offset, info);
3924 }
3925
3926 {
3927 GSList *l;
3928
3929 /* delegate_invoke_impl trampolines */
3930 l = mono_arch_get_delegate_invoke_impls ();
3931 while (l) {
3932 MonoTrampInfo *info = l->data;
3933
3934 emit_trampoline (acfg, acfg->got_offset, info);
3935 l = l->next;
3936 }
3937 }
3938
3939 #endif /* #ifdef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES */
3940
3941 /* Emit trampolines which are numerous */
3942
3943 /*
3944 * These include the following:
3945 * - specific trampolines
3946 * - static rgctx invoke trampolines
3947 * - imt thunks
3948 * These trampolines have the same code, they are parameterized by GOT
3949 * slots.
3950 * They are defined in this file, in the arch_... routines instead of
3951 * in tramp-<ARCH>.c, since it is easier to do it this way.
3952 */
3953
3954 /*
3955 * When running in aot-only mode, we can't create specific trampolines at
3956 * runtime, so we create a few, and save them in the AOT file.
3957 * Normal trampolines embed their argument as a literal inside the
3958 * trampoline code, we can't do that here, so instead we embed an offset
3959 * which needs to be added to the trampoline address to get the address of
3960 * the GOT slot which contains the argument value.
3961 * The generated trampolines jump to the generic trampolines using another
3962 * GOT slot, which will be setup by the AOT loader to point to the
3963 * generic trampoline code of the given type.
3964 */
3965
3966 /*
3967 * FIXME: Maybe we should use more specific trampolines (i.e. one class init for
3968 * each class).
3969 */
3970
3971 emit_section_change (acfg, ".text", 0);
3972
3973 tramp_got_offset = acfg->got_offset;
3974
3975 for (ntype = 0; ntype < MONO_AOT_TRAMP_NUM; ++ntype) {
3976 switch (ntype) {
3977 case MONO_AOT_TRAMP_SPECIFIC:
3978 sprintf (symbol, "specific_trampolines");
3979 break;
3980 case MONO_AOT_TRAMP_STATIC_RGCTX:
3981 sprintf (symbol, "static_rgctx_trampolines");
3982 break;
3983 case MONO_AOT_TRAMP_IMT_THUNK:
3984 sprintf (symbol, "imt_thunks");
3985 break;
3986 default:
3987 g_assert_not_reached ();
3988 }
3989
3990 emit_global (acfg, symbol, TRUE);
3991 emit_alignment (acfg, 16);
3992 emit_label (acfg, symbol);
3993
3994 acfg->trampoline_got_offset_base [ntype] = tramp_got_offset;
3995
3996 for (i = 0; i < acfg->num_trampolines [ntype]; ++i) {
3997 int tramp_size = 0;
3998
3999 switch (ntype) {
4000 case MONO_AOT_TRAMP_SPECIFIC:
4001 arch_emit_specific_trampoline (acfg, tramp_got_offset, &tramp_size);
4002 tramp_got_offset += 2;
4003 break;
4004 case MONO_AOT_TRAMP_STATIC_RGCTX:
4005 arch_emit_static_rgctx_trampoline (acfg, tramp_got_offset, &tramp_size);
4006 tramp_got_offset += 2;
4007 break;
4008 case MONO_AOT_TRAMP_IMT_THUNK:
4009 arch_emit_imt_thunk (acfg, tramp_got_offset, &tramp_size);
4010 tramp_got_offset += 1;
4011 break;
4012 default:
4013 g_assert_not_reached ();
4014 }
4015
4016 if (!acfg->trampoline_size [ntype]) {
4017 g_assert (tramp_size);
4018 acfg->trampoline_size [ntype] = tramp_size;
4019 }
4020 }
4021 }
4022
4023 /* Reserve some entries at the end of the GOT for our use */
4024 acfg->num_trampoline_got_entries = tramp_got_offset - acfg->got_offset;
4025 }
4026
4027 acfg->got_offset += acfg->num_trampoline_got_entries;
4028 }
4029
4030 static gboolean
4031 str_begins_with (const char *str1, const char *str2)
4032 {
4033 int len = strlen (str2);
4034 return strncmp (str1, str2, len) == 0;
4035 }
4036
4037 static void
4038 mono_aot_parse_options (const char *aot_options, MonoAotOptions *opts)
4039 {
4040 gchar **args, **ptr;
4041
4042 args = g_strsplit (aot_options ? aot_options : "", ",", -1);
4043 for (ptr = args; ptr && *ptr; ptr ++) {
4044 const char *arg = *ptr;
4045
4046 if (str_begins_with (arg, "outfile=")) {
4047 opts->outfile = g_strdup (arg + strlen ("outfile="));
4048 } else if (str_begins_with (arg, "save-temps")) {
4049 opts->save_temps = TRUE;
4050 } else if (str_begins_with (arg, "keep-temps")) {
4051 opts->save_temps = TRUE;
4052 } else if (str_begins_with (arg, "write-symbols")) {
4053 opts->write_symbols = TRUE;
4054 } else if (str_begins_with (arg, "metadata-only")) {
4055 opts->metadata_only = TRUE;
4056 } else if (str_begins_with (arg, "bind-to-runtime-version")) {
4057 opts->bind_to_runtime_version = TRUE;
4058 } else if (str_begins_with (arg, "full")) {
4059 opts->full_aot = TRUE;
4060 } else if (str_begins_with (arg, "threads=")) {
4061 opts->nthreads = atoi (arg + strlen ("threads="));
4062 } else if (str_begins_with (arg, "static")) {
4063 opts->static_link = TRUE;
4064 opts->no_dlsym = TRUE;
4065 } else if (str_begins_with (arg, "asmonly")) {
4066 opts->asm_only = TRUE;
4067 } else if (str_begins_with (arg, "asmwriter")) {
4068 opts->asm_writer = TRUE;
4069 } else if (str_begins_with (arg, "nodebug")) {
4070 opts->nodebug = TRUE;
4071 } else if (str_begins_with (arg, "ntrampolines=")) {
4072 opts->ntrampolines = atoi (arg + strlen ("ntrampolines="));
4073 } else if (str_begins_with (arg, "nrgctx-trampolines=")) {
4074 opts->nrgctx_trampolines = atoi (arg + strlen ("nrgctx-trampolines="));
4075 } else if (str_begins_with (arg, "nimt-trampolines=")) {
4076 opts->nimt_trampolines = atoi (arg + strlen ("nimt-trampolines="));
4077 } else if (str_begins_with (arg, "autoreg")) {
4078 opts->autoreg = TRUE;
4079 } else if (str_begins_with (arg, "tool-prefix=")) {
4080 opts->tool_prefix = g_strdup (arg + strlen ("tool-prefix="));
4081 } else if (str_begins_with (arg, "soft-debug")) {
4082 opts->soft_debug = TRUE;
4083 } else if (str_begins_with (arg, "print-skipped")) {
4084 opts->print_skipped_methods = TRUE;
4085 } else if (str_begins_with (arg, "stats")) {
4086 opts->stats = TRUE;
4087 } else {
4088 fprintf (stderr, "AOT : Unknown argument '%s'.\n", arg);
4089 exit (1);
4090 }
4091 }
4092
4093 g_strfreev (args);
4094 }
4095
4096 static void
4097 add_token_info_hash (gpointer key, gpointer value, gpointer user_data)
4098 {
4099 MonoMethod *method = (MonoMethod*)key;
4100 MonoJumpInfoToken *ji = (MonoJumpInfoToken*)value;
4101 MonoJumpInfoToken *new_ji = g_new0 (MonoJumpInfoToken, 1);
4102 MonoAotCompile *acfg = user_data;
4103
4104 new_ji->image = ji->image;
4105 new_ji->token = ji->token;
4106 g_hash_table_insert (acfg->token_info_hash, method, new_ji);
4107 }
4108
4109 static gboolean
4110 can_encode_class (MonoAotCompile *acfg, MonoClass *klass)
4111 {
4112 if (klass->type_token)
4113 return TRUE;
4114 if ((klass->byval_arg.type == MONO_TYPE_VAR) || (klass->byval_arg.type == MONO_TYPE_MVAR))
4115 return TRUE;
4116 if (klass->rank)
4117 return can_encode_class (acfg, klass->element_class);
4118 return FALSE;
4119 }
4120
4121 static gboolean
4122 can_encode_patch (MonoAotCompile *acfg, MonoJumpInfo *patch_info)
4123 {
4124 switch (patch_info->type) {
4125 case MONO_PATCH_INFO_METHOD:
4126 case MONO_PATCH_INFO_METHODCONST: {
4127 MonoMethod *method = patch_info->data.method;
4128
4129 if (method->wrapper_type) {
4130 switch (method->wrapper_type) {
4131 case MONO_WRAPPER_NONE:
4132 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
4133 case MONO_WRAPPER_XDOMAIN_INVOKE:
4134 case MONO_WRAPPER_STFLD:
4135 case MONO_WRAPPER_LDFLD:
4136 case MONO_WRAPPER_LDFLDA:
4137 case MONO_WRAPPER_LDFLD_REMOTE:
4138 case MONO_WRAPPER_STFLD_REMOTE:
4139 case MONO_WRAPPER_STELEMREF:
4140 case MONO_WRAPPER_ISINST:
4141 case MONO_WRAPPER_PROXY_ISINST:
4142 case MONO_WRAPPER_ALLOC:
4143 case MONO_WRAPPER_REMOTING_INVOKE:
4144 case MONO_WRAPPER_UNKNOWN:
4145 case MONO_WRAPPER_WRITE_BARRIER:
4146 break;
4147 case MONO_WRAPPER_MANAGED_TO_MANAGED:
4148 if (!strcmp (method->name, "ElementAddr"))
4149 return TRUE;
4150 else
4151 return FALSE;
4152 default:
4153 //printf ("Skip (wrapper call): %d -> %s\n", patch_info->type, mono_method_full_name (patch_info->data.method, TRUE));
4154 return FALSE;
4155 }
4156 } else {
4157 if (!method->token) {
4158 /* The method is part of a constructed type like Int[,].Set (). */
4159 if (!g_hash_table_lookup (acfg->token_info_hash, method)) {
4160 if (method->klass->rank)
4161 return TRUE;
4162 return FALSE;
4163 }
4164 }
4165 }
4166 break;
4167 }
4168 case MONO_PATCH_INFO_VTABLE:
4169 case MONO_PATCH_INFO_CLASS_INIT:
4170 case MONO_PATCH_INFO_DELEGATE_TRAMPOLINE:
4171 case MONO_PATCH_INFO_CLASS:
4172 case MONO_PATCH_INFO_IID:
4173 case MONO_PATCH_INFO_ADJUSTED_IID:
4174 if (!can_encode_class (acfg, patch_info->data.klass)) {
4175 //printf ("Skip: %s\n", mono_type_full_name (&patch_info->data.klass->byval_arg));
4176 return FALSE;
4177 }
4178 break;
4179 case MONO_PATCH_INFO_RGCTX_FETCH: {
4180 MonoJumpInfoRgctxEntry *entry = patch_info->data.rgctx_entry;
4181
4182 if (!can_encode_patch (acfg, entry->data))
4183 return FALSE;
4184 break;
4185 }
4186 default:
4187 break;
4188 }
4189
4190 return TRUE;
4191 }
4192
4193 static void
4194 add_generic_class (MonoAotCompile *acfg, MonoClass *klass);
4195
4196 /*
4197 * compile_method:
4198 *
4199 * AOT compile a given method.
4200 * This function might be called by multiple threads, so it must be thread-safe.
4201 */
4202 static void
4203 compile_method (MonoAotCompile *acfg, MonoMethod *method)
4204 {
4205 MonoCompile *cfg;
4206 MonoJumpInfo *patch_info;
4207 gboolean skip;
4208 int index, depth;
4209 MonoMethod *wrapped;
4210
4211 if (acfg->aot_opts.metadata_only)
4212 return;
4213
4214 mono_acfg_lock (acfg);
4215 index = get_method_index (acfg, method);
4216 mono_acfg_unlock (acfg);
4217
4218 /* fixme: maybe we can also precompile wrapper methods */
4219 if ((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
4220 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
4221 (method->flags & METHOD_ATTRIBUTE_ABSTRACT)) {
4222 //printf ("Skip (impossible): %s\n", mono_method_full_name (method, TRUE));
4223 return;
4224 }
4225
4226 if (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL)
4227 return;
4228
4229 wrapped = mono_marshal_method_from_wrapper (method);
4230 if (wrapped && (wrapped->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) && wrapped->is_generic)
4231 // FIXME: The wrapper should be generic too, but it is not
4232 return;
4233
4234 InterlockedIncrement (&acfg->stats.mcount);
4235
4236 #if 0
4237 if (method->is_generic || method->klass->generic_container) {
4238 InterlockedIncrement (&acfg->stats.genericcount);
4239 return;
4240 }
4241 #endif
4242
4243 //acfg->aot_opts.print_skipped_methods = TRUE;
4244
4245 /*
4246 * Since these methods are the only ones which are compiled with
4247 * AOT support, and they are not used by runtime startup/shutdown code,
4248 * the runtime will not see AOT methods during AOT compilation,so it
4249 * does not need to support them by creating a fake GOT etc.
4250 */
4251 cfg = mini_method_compile (method, acfg->opts, mono_get_root_domain (), FALSE, TRUE, 0);
4252 if (cfg->exception_type == MONO_EXCEPTION_GENERIC_SHARING_FAILED) {
4253 //printf ("F: %s\n", mono_method_full_name (method, TRUE));
4254 InterlockedIncrement (&acfg->stats.genericcount);
4255 return;
4256 }
4257 if (cfg->exception_type != MONO_EXCEPTION_NONE) {
4258 /* Let the exception happen at runtime */
4259 return;
4260 }
4261
4262 if (cfg->disable_aot) {
4263 if (acfg->aot_opts.print_skipped_methods)
4264 printf ("Skip (disabled): %s\n", mono_method_full_name (method, TRUE));
4265 InterlockedIncrement (&acfg->stats.ocount);
4266 mono_destroy_compile (cfg);
4267 return;
4268 }
4269
4270 /* Nullify patches which need no aot processing */
4271 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4272 switch (patch_info->type) {
4273 case MONO_PATCH_INFO_LABEL:
4274 case MONO_PATCH_INFO_BB:
4275 patch_info->type = MONO_PATCH_INFO_NONE;
4276 break;
4277 default:
4278 break;
4279 }
4280 }
4281
4282 /* Collect method->token associations from the cfg */
4283 mono_acfg_lock (acfg);
4284 g_hash_table_foreach (cfg->token_info_hash, add_token_info_hash, acfg);
4285 mono_acfg_unlock (acfg);
4286
4287 /*
4288 * Check for absolute addresses.
4289 */
4290 skip = FALSE;
4291 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4292 switch (patch_info->type) {
4293 case MONO_PATCH_INFO_ABS:
4294 /* unable to handle this */
4295 skip = TRUE;
4296 break;
4297 default:
4298 break;
4299 }
4300 }
4301
4302 if (skip) {
4303 if (acfg->aot_opts.print_skipped_methods)
4304 printf ("Skip (abs call): %s\n", mono_method_full_name (method, TRUE));
4305 InterlockedIncrement (&acfg->stats.abscount);
4306 mono_destroy_compile (cfg);
4307 return;
4308 }
4309
4310 /* Lock for the rest of the code */
4311 mono_acfg_lock (acfg);
4312
4313 /*
4314 * Check for methods/klasses we can't encode.
4315 */
4316 skip = FALSE;
4317 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4318 if (!can_encode_patch (acfg, patch_info))
4319 skip = TRUE;
4320 }
4321
4322 if (skip) {
4323 if (acfg->aot_opts.print_skipped_methods)
4324 printf ("Skip (patches): %s\n", mono_method_full_name (method, TRUE));
4325 acfg->stats.ocount++;
4326 mono_destroy_compile (cfg);
4327 mono_acfg_unlock (acfg);
4328 return;
4329 }
4330
4331 /* Adds generic instances referenced by this method */
4332 /*
4333 * The depth is used to avoid infinite loops when generic virtual recursion is
4334 * encountered.
4335 */
4336 depth = GPOINTER_TO_UINT (g_hash_table_lookup (acfg->method_depth, method));
4337 if (depth < 32) {
4338 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4339 switch (patch_info->type) {
4340 case MONO_PATCH_INFO_METHOD: {
4341 MonoMethod *m = patch_info->data.method;
4342 if (m->is_inflated) {
4343 if (!(mono_class_generic_sharing_enabled (m->klass) &&
4344 mono_method_is_generic_sharable_impl (m, FALSE)) &&
4345 !method_has_type_vars (m)) {
4346 if (m->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
4347 if (acfg->aot_opts.full_aot)
4348 add_extra_method_with_depth (acfg, mono_marshal_get_native_wrapper (m, TRUE, TRUE), depth + 1);
4349 } else {
4350 add_extra_method_with_depth (acfg, m, depth + 1);
4351 }
4352 }
4353 add_generic_class_with_depth (acfg, m->klass, depth + 5);
4354 }
4355 if (m->wrapper_type == MONO_WRAPPER_MANAGED_TO_MANAGED && !strcmp (m->name, "ElementAddr"))
4356 add_extra_method_with_depth (acfg, m, depth + 1);
4357 break;
4358 }
4359 case MONO_PATCH_INFO_VTABLE: {
4360 MonoClass *klass = patch_info->data.klass;
4361
4362 if (klass->generic_class && !mono_generic_context_is_sharable (&klass->generic_class->context, FALSE))
4363 add_generic_class_with_depth (acfg, klass, depth + 5);
4364 break;
4365 }
4366 default:
4367 break;
4368 }
4369 }
4370 }
4371
4372 /* Determine whenever the method has GOT slots */
4373 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4374 switch (patch_info->type) {
4375 case MONO_PATCH_INFO_GOT_OFFSET:
4376 case MONO_PATCH_INFO_NONE:
4377 break;
4378 case MONO_PATCH_INFO_IMAGE:
4379 /* The assembly is stored in GOT slot 0 */
4380 if (patch_info->data.image != acfg->image)
4381 cfg->has_got_slots = TRUE;
4382 break;
4383 default:
4384 if (!is_plt_patch (patch_info))
4385 cfg->has_got_slots = TRUE;
4386 break;
4387 }
4388 }
4389
4390 if (!cfg->has_got_slots)
4391 InterlockedIncrement (&acfg->stats.methods_without_got_slots);
4392
4393 /*
4394 * FIXME: Instead of this mess, allocate the patches from the aot mempool.
4395 */
4396 /* Make a copy of the patch info which is in the mempool */
4397 {
4398 MonoJumpInfo *patches = NULL, *patches_end = NULL;
4399
4400 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4401 MonoJumpInfo *new_patch_info = mono_patch_info_dup_mp (acfg->mempool, patch_info);
4402
4403 if (!patches)
4404 patches = new_patch_info;
4405 else
4406 patches_end->next = new_patch_info;
4407 patches_end = new_patch_info;
4408 }
4409 cfg->patch_info = patches;
4410 }
4411 /* Make a copy of the unwind info */
4412 {
4413 GSList *l, *unwind_ops;
4414 MonoUnwindOp *op;
4415
4416 unwind_ops = NULL;
4417 for (l = cfg->unwind_ops; l; l = l->next) {
4418 op = mono_mempool_alloc (acfg->mempool, sizeof (MonoUnwindOp));
4419 memcpy (op, l->data, sizeof (MonoUnwindOp));
4420 unwind_ops = g_slist_prepend_mempool (acfg->mempool, unwind_ops, op);
4421 }
4422 cfg->unwind_ops = g_slist_reverse (unwind_ops);
4423 }
4424 /* Make a copy of the argument/local info */
4425 {
4426 MonoInst **args, **locals;
4427 MonoMethodSignature *sig;
4428 MonoMethodHeader *header;
4429 int i;
4430
4431 sig = mono_method_signature (method);
4432 args = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * (sig->param_count + sig->hasthis));
4433 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4434 args [i] = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
4435 memcpy (args [i], cfg->args [i], sizeof (MonoInst));
4436 }
4437 cfg->args = args;
4438
4439 header = mono_method_get_header (method);
4440 locals = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst*) * header->num_locals);
4441 for (i = 0; i < header->num_locals; ++i) {
4442 locals [i] = mono_mempool_alloc (acfg->mempool, sizeof (MonoInst));
4443 memcpy (locals [i], cfg->locals [i], sizeof (MonoInst));
4444 }
4445 cfg->locals = locals;
4446 }
4447
4448 /* Free some fields used by cfg to conserve memory */
4449 mono_mempool_destroy (cfg->mempool);
4450 cfg->mempool = NULL;
4451 g_free (cfg->varinfo);
4452 cfg->varinfo = NULL;
4453 g_free (cfg->vars);
4454 cfg->vars = NULL;
4455 if (cfg->rs) {
4456 mono_regstate_free (cfg->rs);
4457 cfg->rs = NULL;
4458 }
4459
4460 //printf ("Compile: %s\n", mono_method_full_name (method, TRUE));
4461
4462 while (index >= acfg->cfgs_size) {
4463 MonoCompile **new_cfgs;
4464 int new_size;
4465
4466 new_size = acfg->cfgs_size * 2;
4467 new_cfgs = g_new0 (MonoCompile*, new_size);
4468 memcpy (new_cfgs, acfg->cfgs, sizeof (MonoCompile*) * acfg->cfgs_size);
4469 g_free (acfg->cfgs);
4470 acfg->cfgs = new_cfgs;
4471 acfg->cfgs_size = new_size;
4472 }
4473 acfg->cfgs [index] = cfg;
4474
4475 g_hash_table_insert (acfg->method_to_cfg, cfg->orig_method, cfg);
4476
4477 /*
4478 if (cfg->orig_method->wrapper_type)
4479 g_ptr_array_add (acfg->extra_methods, cfg->orig_method);
4480 */
4481
4482 mono_acfg_unlock (acfg);
4483
4484 InterlockedIncrement (&acfg->stats.ccount);
4485 }
4486
4487 static void
4488 compile_thread_main (gpointer *user_data)
4489 {
4490 MonoDomain *domain = user_data [0];
4491 MonoAotCompile *acfg = user_data [1];
4492 GPtrArray *methods = user_data [2];
4493 int i;
4494
4495 mono_thread_attach (domain);
4496
4497 for (i = 0; i < methods->len; ++i)
4498 compile_method (acfg, g_ptr_array_index (methods, i));
4499 }
4500
4501 static void
4502 load_profile_files (MonoAotCompile *acfg)
4503 {
4504 FILE *infile;
4505 char *tmp;
4506 int file_index, res, method_index, i;
4507 char ver [256];
4508 guint32 token;
4509 GList *unordered;
4510
4511 file_index = 0;
4512 while (TRUE) {
4513 tmp = g_strdup_printf ("%s/.mono/aot-profile-data/%s-%d", g_get_home_dir (), acfg->image->assembly_name, file_index);
4514
4515 if (!g_file_test (tmp, G_FILE_TEST_IS_REGULAR)) {
4516 g_free (tmp);
4517 break;
4518 }
4519
4520 infile = fopen (tmp, "r");
4521 g_assert (infile);
4522
4523 printf ("Using profile data file '%s'\n", tmp);
4524 g_free (tmp);
4525
4526 file_index ++;
4527
4528 res = fscanf (infile, "%32s\n", ver);
4529 if ((res != 1) || strcmp (ver, "#VER:2") != 0) {
4530 printf ("Profile file has wrong version or invalid.\n");
4531 fclose (infile);
4532 continue;
4533 }
4534
4535 while (TRUE) {
4536 char name [1024];
4537 MonoMethodDesc *desc;
4538 MonoMethod *method;
4539
4540 if (fgets (name, 1023, infile) == NULL)
4541 break;
4542
4543 /* Kill the newline */
4544 if (strlen (name) > 0)
4545 name [strlen (name) - 1] = '\0';
4546
4547 desc = mono_method_desc_new (name, TRUE);
4548
4549 method = mono_method_desc_search_in_image (desc, acfg->image);
4550
4551 if (method && mono_method_get_token (method)) {
4552 token = mono_method_get_token (method);
4553 method_index = mono_metadata_token_index (token) - 1;
4554
4555 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (method_index))) {
4556 acfg->method_order = g_list_append (acfg->method_order, GUINT_TO_POINTER (method_index));
4557 }
4558 } else {
4559 //printf ("No method found matching '%s'.\n", name);
4560 }
4561 }
4562 fclose (infile);
4563 }
4564
4565 /* Add missing methods */
4566 unordered = NULL;
4567 for (i = 0; i < acfg->image->tables [MONO_TABLE_METHOD].rows; ++i) {
4568 if (!g_list_find (acfg->method_order, GUINT_TO_POINTER (i)))
4569 unordered = g_list_prepend (unordered, GUINT_TO_POINTER (i));
4570 }
4571 unordered = g_list_reverse (unordered);
4572 if (acfg->method_order)
4573 g_list_last (acfg->method_order)->next = unordered;
4574 else
4575 acfg->method_order = unordered;
4576 }
4577
4578 /* Used by the LLVM backend */
4579 guint32
4580 mono_aot_get_got_offset (MonoJumpInfo *ji)
4581 {
4582 return get_got_offset (llvm_acfg, ji);
4583 }
4584
4585 char*
4586 mono_aot_get_method_name (MonoCompile *cfg)
4587 {
4588 guint32 method_index = get_method_index (llvm_acfg, cfg->orig_method);
4589
4590 return g_strdup_printf ("m_%x", method_index);
4591 }
4592
4593 char*
4594 mono_aot_get_method_debug_name (MonoCompile *cfg)
4595 {
4596 return get_debug_sym (cfg->orig_method, "", llvm_acfg->method_label_hash);
4597 }
4598
4599 char*
4600 mono_aot_get_plt_symbol (MonoJumpInfoType type, gconstpointer data)
4601 {
4602 MonoJumpInfo *ji = mono_mempool_alloc (llvm_acfg->mempool, sizeof (MonoJumpInfo));
4603 MonoPltEntry *plt_entry;
4604
4605 ji->type = type;
4606 ji->data.target = data;
4607
4608 if (!can_encode_patch (llvm_acfg, ji))
4609 return NULL;
4610
4611 plt_entry = get_plt_entry (llvm_acfg, ji);
4612
4613 return g_strdup_printf (plt_entry->symbol);
4614 }
4615
4616 MonoJumpInfo*
4617 mono_aot_patch_info_dup (MonoJumpInfo* ji)
4618 {
4619 MonoJumpInfo *res;
4620
4621 mono_acfg_lock (llvm_acfg);
4622 res = mono_patch_info_dup_mp (llvm_acfg->mempool, ji);
4623 mono_acfg_unlock (llvm_acfg);
4624
4625 return res;
4626 }
4627
4628 #ifdef ENABLE_LLVM
4629
4630 /*
4631 * emit_llvm_file:
4632 *
4633 * Emit the LLVM code into an LLVM bytecode file, and compile it using the LLVM
4634 * tools.
4635 */
4636 static void
4637 emit_llvm_file (MonoAotCompile *acfg)
4638 {
4639 char *command, *opts;
4640 int i;
4641 MonoJumpInfo *patch_info;
4642 const char *llc_extra_args;
4643
4644 /*
4645 * When using LLVM, we let llvm emit the got since the LLVM IL needs to refer
4646 * to it.
4647 */
4648
4649 /* Compute the final size of the got */
4650 for (i = 0; i < acfg->nmethods; ++i) {
4651 if (acfg->cfgs [i]) {
4652 for (patch_info = acfg->cfgs [i]->patch_info; patch_info; patch_info = patch_info->next) {
4653 if (patch_info->type != MONO_PATCH_INFO_NONE) {
4654 if (!is_plt_patch (patch_info))
4655 get_got_offset (acfg, patch_info);
4656 else
4657 get_plt_entry (acfg, patch_info);
4658 }
4659 }
4660 }
4661 }
4662
4663 acfg->final_got_size = acfg->got_offset + acfg->plt_offset;
4664
4665 if (acfg->aot_opts.full_aot) {
4666 int ntype;
4667
4668 /*
4669 * Need to add the got entries used by the trampolines.
4670 * This is only a conservative approximation.
4671 */
4672 if (strcmp (acfg->image->assembly->aname.name, "mscorlib") == 0) {
4673 /* For the generic + rgctx trampolines */
4674 acfg->final_got_size += 200;
4675 /* For the specific trampolines */
4676 for (ntype = 0; ntype < MONO_AOT_TRAMP_NUM; ++ntype)
4677 acfg->final_got_size += acfg->num_trampolines [ntype] * 2;
4678 }
4679 }
4680
4681
4682 mono_llvm_emit_aot_module ("temp.bc", acfg->final_got_size);
4683
4684 /*
4685 * FIXME: Experiment with adding optimizations, the -std-compile-opts set takes
4686 * a lot of time, and doesn't seem to save much space.
4687 * The following optimizations cannot be enabled:
4688 * - 'tailcallelim'
4689 * The opt list below was produced by taking the output of:
4690 * llvm-as < /dev/null | opt -O2 -disable-output -debug-pass=Arguments
4691 * then removing tailcallelim + the global opts, and adding a second gvn.
4692 */
4693 opts = g_strdup ("-instcombine -simplifycfg");
4694 opts = g_strdup ("-simplifycfg -domtree -domfrontier -scalarrepl -instcombine -simplifycfg -basiccg -prune-eh -inline -functionattrs -domtree -domfrontier -scalarrepl -simplify-libcalls -instcombine -jump-threading -simplifycfg -instcombine -simplifycfg -reassociate -domtree -loops -loopsimplify -domfrontier -loopsimplify -lcssa -loop-rotate -licm -lcssa -loop-unswitch -instcombine -scalar-evolution -loopsimplify -lcssa -iv-users -indvars -loop-deletion -loopsimplify -lcssa -loop-unroll -instcombine -memdep -gvn -memdep -memcpyopt -sccp -instcombine -jump-threading -domtree -memdep -dse -adce -gvn -simplifycfg -preverify -domtree -verify");
4695 #if 1
4696 command = g_strdup_printf ("opt -f %s -o temp.opt.bc temp.bc", opts);
4697 printf ("Executing opt: %s\n", command);
4698 if (system (command) != 0) {
4699 exit (1);
4700 }
4701 #endif
4702 g_free (opts);
4703
4704 #if !LLVM_CHECK_VERSION(2, 8)
4705 /* LLVM 2.8 removed the -f flag ??? */
4706 llc_extra_args = "-f";
4707 #else
4708 llc_extra_args = "";
4709 #endif
4710 command = g_strdup_printf ("llc %s %s -relocation-model=pic -unwind-tables -o %s temp.opt.bc", LLC_TARGET_ARGS, llc_extra_args, acfg->tmpfname);
4711
4712 printf ("Executing llc: %s\n", command);
4713
4714 if (system (command) != 0) {
4715 exit (1);
4716 }
4717 }
4718 #endif
4719
4720 static void
4721 emit_code (MonoAotCompile *acfg)
4722 {
4723 int i;
4724 char symbol [256];
4725 char end_symbol [256];
4726 GList *l;
4727
4728 #if defined(TARGET_POWERPC64)
4729 sprintf (symbol, ".Lgot_addr");
4730 emit_section_change (acfg, ".text", 0);
4731 emit_alignment (acfg, 8);
4732 emit_label (acfg, symbol);
4733 emit_pointer (acfg, acfg->got_symbol);
4734 #endif
4735
4736 /*
4737 * This global symbol is used to compute the address of each method using the
4738 * code_offsets array. It is also used to compute the memory ranges occupied by
4739 * AOT code, so it must be equal to the address of the first emitted method.
4740 */
4741 sprintf (symbol, "methods");
4742 emit_section_change (acfg, ".text", 0);
4743 emit_global (acfg, symbol, TRUE);
4744 emit_alignment (acfg, 8);
4745 if (acfg->llvm) {
4746 for (i = 0; i < acfg->nmethods; ++i) {
4747 if (acfg->cfgs [i] && acfg->cfgs [i]->compile_llvm) {
4748 fprintf (acfg->fp, "\n.set methods, %s\n", acfg->cfgs [i]->asm_symbol);
4749 break;
4750 }
4751 }
4752 if (i == acfg->nmethods)
4753 /* No LLVM compiled methods */
4754 emit_label (acfg, symbol);
4755 } else {
4756 emit_label (acfg, symbol);
4757 }
4758
4759 /*
4760 * Emit some padding so the local symbol for the first method doesn't have the
4761 * same address as 'methods'.
4762 */
4763 emit_zero_bytes (acfg, 16);
4764
4765 for (l = acfg->method_order; l != NULL; l = l->next) {
4766 MonoCompile *cfg;
4767 MonoMethod *method;
4768
4769 i = GPOINTER_TO_UINT (l->data);
4770
4771 cfg = acfg->cfgs [i];
4772
4773 if (!cfg)
4774 continue;
4775
4776 method = cfg->orig_method;
4777
4778 /* Emit unbox trampoline */
4779 if (acfg->aot_opts.full_aot && cfg->orig_method->klass->valuetype && (method->flags & METHOD_ATTRIBUTE_VIRTUAL)) {
4780 char call_target [256];
4781
4782 if (!method->wrapper_type && !method->is_inflated) {
4783 g_assert (method->token);
4784 sprintf (symbol, "ut_%d", mono_metadata_token_index (method->token) - 1);
4785 } else {
4786 sprintf (symbol, "ut_e_%d", get_method_index (acfg, method));
4787 }
4788
4789 emit_section_change (acfg, ".text", 0);
4790 emit_global (acfg, symbol, TRUE);
4791 emit_label (acfg, symbol);
4792
4793 sprintf (call_target, "%s", cfg->asm_symbol);
4794
4795 arch_emit_unbox_trampoline (acfg, cfg->orig_method, cfg->generic_sharing_context, call_target);
4796 }
4797
4798 if (cfg->compile_llvm)
4799 acfg->stats.llvm_count ++;
4800 else
4801 emit_method_code (acfg, cfg);
4802 }
4803
4804 sprintf (symbol, "methods_end");
4805 emit_section_change (acfg, ".text", 0);
4806 emit_global (acfg, symbol, FALSE);
4807 emit_alignment (acfg, 8);
4808 emit_label (acfg, symbol);
4809
4810 sprintf (symbol, "code_offsets");
4811 emit_section_change (acfg, RODATA_SECT, 1);
4812 emit_global (acfg, symbol, FALSE);
4813 emit_alignment (acfg, 8);
4814 emit_label (acfg, symbol);
4815
4816 acfg->stats.offsets_size += acfg->nmethods * 4;
4817
4818 sprintf (end_symbol, "methods");
4819 for (i = 0; i < acfg->nmethods; ++i) {
4820 if (acfg->cfgs [i]) {
4821 emit_symbol_diff (acfg, acfg->cfgs [i]->asm_symbol, end_symbol, 0);
4822 } else {
4823 emit_int32 (acfg, 0xffffffff);
4824 }
4825 }
4826 emit_line (acfg);
4827 }
4828
4829 static void
4830 emit_info (MonoAotCompile *acfg)
4831 {
4832 int i;
4833 char symbol [256];
4834 GList *l;
4835 gint32 *offsets;
4836
4837 offsets = g_new0 (gint32, acfg->nmethods);
4838
4839 for (l = acfg->method_order; l != NULL; l = l->next) {
4840 i = GPOINTER_TO_UINT (l->data);
4841
4842 if (acfg->cfgs [i]) {
4843 emit_method_info (acfg, acfg->cfgs [i]);
4844 offsets [i] = acfg->cfgs [i]->method_info_offset;
4845 } else {
4846 offsets [i] = 0;
4847 }
4848 }
4849
4850 sprintf (symbol, "method_info_offsets");
4851 emit_section_change (acfg, RODATA_SECT, 1);
4852 emit_global (acfg, symbol, FALSE);
4853 emit_alignment (acfg, 8);
4854 emit_label (acfg, symbol);
4855
4856 acfg->stats.offsets_size += emit_offset_table (acfg, acfg->nmethods, 10, offsets);
4857
4858 g_free (offsets);
4859 }
4860
4861 #endif /* #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT) */
4862
4863 #define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k))))
4864 #define mix(a,b,c) { \
4865 a -= c; a ^= rot(c, 4); c += b; \
4866 b -= a; b ^= rot(a, 6); a += c; \
4867 c -= b; c ^= rot(b, 8); b += a; \
4868 a -= c; a ^= rot(c,16); c += b; \
4869 b -= a; b ^= rot(a,19); a += c; \
4870 c -= b; c ^= rot(b, 4); b += a; \
4871 }
4872 #define final(a,b,c) { \
4873 c ^= b; c -= rot(b,14); \
4874 a ^= c; a -= rot(c,11); \
4875 b ^= a; b -= rot(a,25); \
4876 c ^= b; c -= rot(b,16); \
4877 a ^= c; a -= rot(c,4); \
4878 b ^= a; b -= rot(a,14); \
4879 c ^= b; c -= rot(b,24); \
4880 }
4881
4882 static guint
4883 mono_aot_type_hash (MonoType *t1)
4884 {
4885 guint hash = t1->type;
4886
4887 hash |= t1->byref << 6; /* do not collide with t1->type values */
4888 switch (t1->type) {
4889 case MONO_TYPE_VALUETYPE:
4890 case MONO_TYPE_CLASS:
4891 case MONO_TYPE_SZARRAY:
4892 /* check if the distribution is good enough */
4893 return ((hash << 5) - hash) ^ mono_metadata_str_hash (t1->data.klass->name);
4894 case MONO_TYPE_PTR:
4895 return ((hash << 5) - hash) ^ mono_metadata_type_hash (t1->data.type);
4896 case MONO_TYPE_ARRAY:
4897 return ((hash << 5) - hash) ^ mono_metadata_type_hash (&t1->data.array->eklass->byval_arg);
4898 case MONO_TYPE_GENERICINST:
4899 return ((hash << 5) - hash) ^ 0;
4900 }
4901 return hash;
4902 }
4903
4904 /*
4905 * mono_aot_method_hash:
4906 *
4907 * Return a hash code for methods which only depends on metadata.
4908 */
4909 guint32
4910 mono_aot_method_hash (MonoMethod *method)
4911 {
4912 MonoMethodSignature *sig;
4913 MonoClass *klass;
4914 int i;
4915 int hashes_count;
4916 guint32 *hashes_start, *hashes;
4917 guint32 a, b, c;
4918
4919 /* Similar to the hash in mono_method_get_imt_slot () */
4920
4921 sig = mono_method_signature (method);
4922
4923 hashes_count = sig->param_count + 5;
4924 hashes_start = malloc (hashes_count * sizeof (guint32));
4925 hashes = hashes_start;
4926
4927 /* Some wrappers are assigned to random classes */
4928 if (!method->wrapper_type || method->wrapper_type == MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK)
4929 klass = method->klass;
4930 else
4931 klass = mono_defaults.object_class;
4932
4933 if (!method->wrapper_type) {
4934 char *full_name = mono_type_full_name (&klass->byval_arg);
4935
4936 hashes [0] = mono_metadata_str_hash (full_name);
4937 hashes [1] = 0;
4938 g_free (full_name);
4939 } else {
4940 hashes [0] = mono_metadata_str_hash (klass->name);
4941 hashes [1] = mono_metadata_str_hash (klass->name_space);
4942 }
4943 if (method->wrapper_type == MONO_WRAPPER_STFLD || method->wrapper_type == MONO_WRAPPER_LDFLD || method->wrapper_type == MONO_WRAPPER_LDFLDA)
4944 /* The method name includes a stringified pointer */
4945 hashes [2] = 0;
4946 else
4947 hashes [2] = mono_metadata_str_hash (method->name);
4948 hashes [3] = method->wrapper_type;
4949 hashes [4] = mono_aot_type_hash (sig->ret);
4950 for (i = 0; i < sig->param_count; i++) {
4951 hashes [5 + i] = mono_aot_type_hash (sig->params [i]);
4952 }
4953
4954 /* Setup internal state */
4955 a = b = c = 0xdeadbeef + (((guint32)hashes_count)<<2);
4956
4957 /* Handle most of the hashes */
4958 while (hashes_count > 3) {
4959 a += hashes [0];
4960 b += hashes [1];
4961 c += hashes [2];
4962 mix (a,b,c);
4963 hashes_count -= 3;
4964 hashes += 3;
4965 }
4966
4967 /* Handle the last 3 hashes (all the case statements fall through) */
4968 switch (hashes_count) {
4969 case 3 : c += hashes [2];
4970 case 2 : b += hashes [1];
4971 case 1 : a += hashes [0];
4972 final (a,b,c);
4973 case 0: /* nothing left to add */
4974 break;
4975 }
4976
4977 free (hashes_start);
4978
4979 return c;
4980 }
4981 #undef rot
4982 #undef mix
4983 #undef final
4984
4985 /*
4986 * mono_aot_wrapper_name:
4987 *
4988 * Return a string which uniqely identifies the given wrapper method.
4989 */
4990 char*
4991 mono_aot_wrapper_name (MonoMethod *method)
4992 {
4993 char *name, *tmpsig, *klass_desc;
4994
4995 tmpsig = mono_signature_get_desc (mono_method_signature (method), TRUE);
4996
4997 switch (method->wrapper_type) {
4998 case MONO_WRAPPER_RUNTIME_INVOKE:
4999 if (!strcmp (method->name, "runtime_invoke_dynamic"))
5000 name = g_strdup_printf ("(wrapper runtime-invoke-dynamic)");
5001 else
5002 name = g_strdup_printf ("%s (%s)", method->name, tmpsig);
5003 break;
5004 default:
5005 klass_desc = mono_type_full_name (&method->klass->byval_arg);
5006 name = g_strdup_printf ("%s:%s (%s)", klass_desc, method->name, tmpsig);
5007 g_free (klass_desc);
5008 break;
5009 }
5010
5011 g_free (tmpsig);
5012
5013 return name;
5014 }
5015
5016 /*
5017 * mono_aot_get_array_helper_from_wrapper;
5018 *
5019 * Get the helper method in Array called by an array wrapper method.
5020 */
5021 MonoMethod*
5022 mono_aot_get_array_helper_from_wrapper (MonoMethod *method)
5023 {
5024 MonoMethod *m;
5025 const char *prefix;
5026 MonoGenericContext ctx;
5027 MonoType *args [16];
5028 char *mname, *iname, *s, *s2, *helper_name = NULL;
5029
5030 prefix = "System.Collections.Generic";
5031 s = g_strdup_printf ("%s", method->name + strlen (prefix) + 1);
5032 s2 = strstr (s, "`1.");
5033 g_assert (s2);
5034 s2 [0] = '\0';
5035 iname = s;
5036 mname = s2 + 3;
5037
5038 //printf ("X: %s %s\n", iname, mname);
5039
5040 if (!strcmp (iname, "IList"))
5041 helper_name = g_strdup_printf ("InternalArray__%s", mname);
5042 else
5043 helper_name = g_strdup_printf ("InternalArray__%s_%s", iname, mname);
5044 m = mono_class_get_method_from_name (mono_defaults.array_class, helper_name, mono_method_signature (method)->param_count);
5045 g_assert (m);
5046 g_free (helper_name);
5047 g_free (s);
5048
5049 if (m->is_generic) {
5050 memset (&ctx, 0, sizeof (ctx));
5051 args [0] = &method->klass->element_class->byval_arg;
5052 ctx.method_inst = mono_metadata_get_generic_inst (1, args);
5053 m = mono_class_inflate_generic_method (m, &ctx);
5054 }
5055
5056 return m;
5057 }
5058
5059 #if !defined(DISABLE_AOT) && !defined(DISABLE_JIT)
5060
5061 typedef struct HashEntry {
5062 guint32 key, value, index;
5063 struct HashEntry *next;
5064 } HashEntry;
5065
5066 /*
5067 * emit_extra_methods:
5068 *
5069 * Emit methods which are not in the METHOD table, like wrappers.
5070 */
5071 static void
5072 emit_extra_methods (MonoAotCompile *acfg)
5073 {
5074 int i, table_size, buf_size;
5075 char symbol [256];
5076 guint8 *p, *buf;
5077 guint32 *info_offsets;
5078 guint32 hash;
5079 GPtrArray *table;
5080 HashEntry *entry, *new_entry;
5081 int nmethods, max_chain_length;
5082 int *chain_lengths;
5083
5084 info_offsets = g_new0 (guint32, acfg->extra_methods->len);
5085
5086 /* Emit method info */
5087 nmethods = 0;
5088 for (i = 0; i < acfg->extra_methods->len; ++i) {
5089 MonoMethod *method = g_ptr_array_index (acfg->extra_methods, i);
5090 MonoCompile *cfg = g_hash_table_lookup (acfg->method_to_cfg, method);
5091 char *name;
5092
5093 if (!cfg)
5094 continue;
5095
5096 buf_size = 1024;
5097 p = buf = g_malloc (buf_size);
5098
5099 nmethods ++;
5100
5101 method = cfg->method_to_register;
5102
5103 name = NULL;
5104 if (method->wrapper_type) {
5105 /*
5106 * We encode some wrappers using their name, since encoding them
5107 * directly would be difficult. This also avoids creating the wrapper
5108 * methods at runtime, since they are not needed anyway.
5109 */
5110 switch (method->wrapper_type) {
5111 case MONO_WRAPPER_REMOTING_INVOKE_WITH_CHECK:
5112 case MONO_WRAPPER_SYNCHRONIZED:
5113 /* encode_method_ref () can handle these */
5114 break;
5115 case MONO_WRAPPER_RUNTIME_INVOKE:
5116 if (mono_marshal_method_from_wrapper (method) != method && !strstr (method->name, "virtual"))
5117 /* Direct wrapper, encode normally */
5118 break;
5119 /* Fall through */
5120 default:
5121 name = mono_aot_wrapper_name (method);
5122 break;
5123 }
5124 }
5125
5126 if (name) {
5127 encode_value (1, p, &p);
5128 encode_value (method->wrapper_type, p, &p);
5129 strcpy ((char*)p, name);
5130 p += strlen (name ) + 1;
5131 g_free (name);
5132 } else {
5133 encode_value (0, p, &p);
5134 encode_method_ref (acfg, method, p, &p);
5135 }
5136
5137 g_assert ((p - buf) < buf_size);
5138
5139 info_offsets [i] = add_to_blob (acfg, buf, p - buf);
5140 g_free (buf);
5141 }
5142
5143 /*
5144 * Construct a chained hash table for mapping indexes in extra_method_info to
5145 * method indexes.
5146 */
5147 table_size = g_spaced_primes_closest ((int)(nmethods * 1.5));
5148 table = g_ptr_array_sized_new (table_size);
5149 for (i = 0; i < table_size; ++i)
5150 g_ptr_array_add (table, NULL);
5151 chain_lengths = g_new0 (int, table_size);
5152 max_chain_length = 0;
5153 for (i = 0; i < acfg->extra_methods->len; ++i) {
5154 MonoMethod *method = g_ptr_array_index (acfg->extra_methods, i);
5155 MonoCompile *cfg = g_hash_table_lookup (acfg->method_to_cfg, method);
5156 guint32 key, value;
5157
5158 if (!cfg)
5159 continue;
5160
5161 key = info_offsets [i];
5162 value = get_method_index (acfg, method);
5163
5164 hash = mono_aot_method_hash (method) % table_size;
5165
5166 chain_lengths [hash] ++;
5167 max_chain_length = MAX (max_chain_length, chain_lengths [hash]);
5168
5169 new_entry = mono_mempool_alloc0 (acfg->mempool, sizeof (HashEntry));
5170 new_entry->key = key;
5171 new_entry->value = value;
5172
5173 entry = g_ptr_array_index (table, hash);
5174 if (entry == NULL) {
5175 new_entry->index = hash;
5176 g_ptr_array_index (table, hash) = new_entry;
5177 } else {
5178 while (entry->next)
5179 entry = entry->next;
5180
5181 entry->next = new_entry;
5182 new_entry->index = table->len;
5183 g_ptr_array_add (table, new_entry);
5184 }
5185 }
5186
5187 //printf ("MAX: %d\n", max_chain_length);
5188
5189 /* Emit the table */
5190 sprintf (symbol, "extra_method_table");
5191 emit_section_change (acfg, RODATA_SECT, 0);
5192 emit_global (acfg, symbol, FALSE);
5193 emit_alignment (acfg, 8);
5194 emit_label (acfg, symbol);
5195
5196 emit_int32 (acfg, table_size);
5197 for (i = 0; i < table->len; ++i) {
5198 HashEntry *entry = g_ptr_array_index (table, i);
5199
5200 if (entry == NULL) {
5201 emit_int32 (acfg, 0);
5202 emit_int32 (acfg, 0);
5203 emit_int32 (acfg, 0);
5204 } else {
5205 //g_assert (entry->key > 0);
5206 emit_int32 (acfg, entry->key);
5207 emit_int32 (acfg, entry->value);
5208 if (entry->next)
5209 emit_int32 (acfg, entry->next->index);
5210 else
5211 emit_int32 (acfg, 0);
5212 }
5213 }
5214
5215 /*
5216 * Emit a table reverse mapping method indexes to their index in extra_method_info.
5217 * This is used by mono_aot_find_jit_info ().
5218 */
5219 sprintf (symbol, "extra_method_info_offsets");
5220 emit_section_change (acfg, RODATA_SECT, 0);
5221 emit_global (acfg, symbol, FALSE);
5222 emit_alignment (acfg, 8);
5223 emit_label (acfg, symbol);
5224
5225 emit_int32 (acfg, acfg->extra_methods->len);
5226 for (i = 0; i < acfg->extra_methods->len; ++i) {
5227 MonoMethod *method = g_ptr_array_index (acfg->extra_methods, i);
5228
5229 emit_int32 (acfg, get_method_index (acfg, method));
5230 emit_int32 (acfg, info_offsets [i]);
5231 }
5232 }
5233
5234 static void
5235 emit_exception_info (MonoAotCompile *acfg)
5236 {
5237 int i;
5238 char symbol [256];
5239 gint32 *offsets;
5240
5241 offsets = g_new0 (gint32, acfg->nmethods);
5242 for (i = 0; i < acfg->nmethods; ++i) {
5243 if (acfg->cfgs [i]) {
5244 emit_exception_debug_info (acfg, acfg->cfgs [i]);
5245 offsets [i] = acfg->cfgs [i]->ex_info_offset;
5246 } else {
5247 offsets [i] = 0;
5248 }
5249 }
5250
5251 sprintf (symbol, "ex_info_offsets");
5252 emit_section_change (acfg, RODATA_SECT, 1);
5253 emit_global (acfg, symbol, FALSE);
5254 emit_alignment (acfg, 8);
5255 emit_label (acfg, symbol);
5256
5257 acfg->stats.offsets_size += emit_offset_table (acfg, acfg->nmethods, 10, offsets);
5258 g_free (offsets);
5259 }
5260
5261 static void
5262 emit_unwind_info (MonoAotCompile *acfg)
5263 {
5264 int i;
5265 char symbol [128];
5266
5267 /*
5268 * The unwind info contains a lot of duplicates so we emit each unique
5269 * entry once, and only store the offset from the start of the table in the
5270 * exception info.
5271 */
5272
5273 sprintf (symbol, "unwind_info");
5274 emit_section_change (acfg, RODATA_SECT, 1);
5275 emit_alignment (acfg, 8);
5276 emit_label (acfg, symbol);
5277 emit_global (acfg, symbol, FALSE);
5278
5279 for (i = 0; i < acfg->unwind_ops->len; ++i) {
5280 guint32 index = GPOINTER_TO_UINT (g_ptr_array_index (acfg->unwind_ops, i));
5281 guint8 *unwind_info;
5282 guint32 unwind_info_len;
5283 guint8 buf [16];
5284 guint8 *p;
5285
5286 unwind_info = mono_get_cached_unwind_info (index, &unwind_info_len);
5287
5288 p = buf;
5289 encode_value (unwind_info_len, p, &p);
5290 emit_bytes (acfg, buf, p - buf);
5291 emit_bytes (acfg, unwind_info, unwind_info_len);
5292
5293 acfg->stats.unwind_info_size += (p - buf) + unwind_info_len;
5294 }
5295 }
5296
5297 static void
5298 emit_class_info (MonoAotCompile *acfg)
5299 {
5300 int i;
5301 char symbol [256];
5302 gint32 *offsets;
5303
5304 offsets = g_new0 (gint32, acfg->image->tables [MONO_TABLE_TYPEDEF].rows);
5305 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i)
5306 offsets [i] = emit_klass_info (acfg, MONO_TOKEN_TYPE_DEF | (i + 1));
5307
5308 sprintf (symbol, "class_info_offsets");
5309 emit_section_change (acfg, RODATA_SECT, 1);
5310 emit_global (acfg, symbol, FALSE);
5311 emit_alignment (acfg, 8);
5312 emit_label (acfg, symbol);
5313
5314 acfg->stats.offsets_size += emit_offset_table (acfg, acfg->image->tables [MONO_TABLE_TYPEDEF].rows, 10, offsets);
5315 g_free (offsets);
5316 }
5317
5318 typedef struct ClassNameTableEntry {
5319 guint32 token, index;
5320 struct ClassNameTableEntry *next;
5321 } ClassNameTableEntry;
5322
5323 static void
5324 emit_class_name_table (MonoAotCompile *acfg)
5325 {
5326 int i, table_size;
5327 guint32 token, hash;
5328 MonoClass *klass;
5329 GPtrArray *table;
5330 char *full_name;
5331 char symbol [256];
5332 ClassNameTableEntry *entry, *new_entry;
5333
5334 /*
5335 * Construct a chained hash table for mapping class names to typedef tokens.
5336 */
5337 table_size = g_spaced_primes_closest ((int)(acfg->image->tables [MONO_TABLE_TYPEDEF].rows * 1.5));
5338 table = g_ptr_array_sized_new (table_size);
5339 for (i = 0; i < table_size; ++i)
5340 g_ptr_array_add (table, NULL);
5341 for (i = 0; i < acfg->image->tables [MONO_TABLE_TYPEDEF].rows; ++i) {
5342 token = MONO_TOKEN_TYPE_DEF | (i + 1);
5343 klass = mono_class_get (acfg->image, token);
5344 if (!klass)
5345 continue;
5346 full_name = mono_type_get_name_full (mono_class_get_type (klass), MONO_TYPE_NAME_FORMAT_FULL_NAME);
5347 hash = mono_metadata_str_hash (full_name) % table_size;
5348 g_free (full_name);
5349
5350 /* FIXME: Allocate from the mempool */
5351 new_entry = g_new0 (ClassNameTableEntry, 1);
5352 new_entry->token = token;
5353
5354 entry = g_ptr_array_index (table, hash);
5355 if (entry == NULL) {
5356 new_entry->index = hash;
5357 g_ptr_array_index (table, hash) = new_entry;
5358 } else {
5359 while (entry->next)
5360 entry = entry->next;
5361
5362 entry->next = new_entry;
5363 new_entry->index = table->len;
5364 g_ptr_array_add (table, new_entry);
5365 }
5366 }
5367
5368 /* Emit the table */
5369 sprintf (symbol, "class_name_table");
5370 emit_section_change (acfg, RODATA_SECT, 0);
5371 emit_global (acfg, symbol, FALSE);
5372 emit_alignment (acfg, 8);
5373 emit_label (acfg, symbol);
5374
5375 /* FIXME: Optimize memory usage */
5376 g_assert (table_size < 65000);
5377 emit_int16 (acfg, table_size);
5378 g_assert (table->len < 65000);
5379 for (i = 0; i < table->len; ++i) {
5380 ClassNameTableEntry *entry = g_ptr_array_index (table, i);
5381
5382 if (entry == NULL) {
5383 emit_int16 (acfg, 0);
5384 emit_int16 (acfg, 0);
5385 } else {
5386 emit_int16 (acfg, mono_metadata_token_index (entry->token));
5387 if (entry->next)
5388 emit_int16 (acfg, entry->next->index);
5389 else
5390 emit_int16 (acfg, 0);
5391 }
5392 }
5393 }
5394
5395 static void
5396 emit_image_table (MonoAotCompile *acfg)
5397 {
5398 int i;
5399 char symbol [256];
5400
5401 /*
5402 * The image table is small but referenced in a lot of places.
5403 * So we emit it at once, and reference its elements by an index.
5404 */
5405
5406 sprintf (symbol, "mono_image_table");
5407 emit_section_change (acfg, RODATA_SECT, 1);
5408 emit_global (acfg, symbol, FALSE);
5409 emit_alignment (acfg, 8);
5410 emit_label (acfg, symbol);
5411
5412 emit_int32 (acfg, acfg->image_table->len);
5413 for (i = 0; i < acfg->image_table->len; i++) {
5414 MonoImage *image = (MonoImage*)g_ptr_array_index (acfg->image_table, i);
5415 MonoAssemblyName *aname = &image->assembly->aname;
5416
5417 /* FIXME: Support multi-module assemblies */
5418 g_assert (image->assembly->image == image);
5419
5420 emit_string (acfg, image->assembly_name);
5421 emit_string (acfg, image->guid);
5422 emit_string (acfg, aname->culture ? aname->culture : "");
5423 emit_string (acfg, (const char*)aname->public_key_token);
5424
5425 emit_alignment (acfg, 8);
5426 emit_int32 (acfg, aname->flags);
5427 emit_int32 (acfg, aname->major);
5428 emit_int32 (acfg, aname->minor);
5429 emit_int32 (acfg, aname->build);
5430 emit_int32 (acfg, aname->revision);
5431 }
5432 }
5433
5434 static void
5435 emit_got_info (MonoAotCompile *acfg)
5436 {
5437 char symbol [256];
5438 int i, first_plt_got_patch, buf_size;
5439 guint8 *p, *buf;
5440 guint32 *got_info_offsets;
5441
5442 /* Add the patches needed by the PLT to the GOT */
5443 acfg->plt_got_offset_base = acfg->got_offset;
5444 first_plt_got_patch = acfg->got_patches->len;
5445 for (i = 1; i < acfg->plt_offset; ++i) {
5446 MonoPltEntry *plt_entry = g_hash_table_lookup (acfg->plt_offset_to_entry, GUINT_TO_POINTER (i));
5447
5448 g_ptr_array_add (acfg->got_patches, plt_entry->ji);
5449 }
5450
5451 acfg->got_offset += acfg->plt_offset;
5452
5453 /**
5454 * FIXME:
5455 * - optimize offsets table.
5456 * - reduce number of exported symbols.
5457 * - emit info for a klass only once.
5458 * - determine when a method uses a GOT slot which is guaranteed to be already
5459 * initialized.
5460 * - clean up and document the code.
5461 * - use String.Empty in class libs.
5462 */
5463
5464 /* Encode info required to decode shared GOT entries */
5465 buf_size = acfg->got_patches->len * 128;
5466 p = buf = mono_mempool_alloc (acfg->mempool, buf_size);
5467 got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->got_patches->len * sizeof (guint32));
5468 acfg->plt_got_info_offsets = mono_mempool_alloc (acfg->mempool, acfg->plt_offset * sizeof (guint32));
5469 /* Unused */
5470 if (acfg->plt_offset)
5471 acfg->plt_got_info_offsets [0] = 0;
5472 for (i = 0; i < acfg->got_patches->len; ++i) {
5473 MonoJumpInfo *ji = g_ptr_array_index (acfg->got_patches, i);
5474
5475 p = buf;
5476
5477 encode_value (ji->type, p, &p);
5478 encode_patch (acfg, ji, p, &p);
5479
5480 g_assert (p - buf <= buf_size);
5481 got_info_offsets [i] = add_to_blob (acfg, buf, p - buf);
5482
5483 if (i >= first_plt_got_patch)
5484 acfg->plt_got_info_offsets [i - first_plt_got_patch + 1] = got_info_offsets [i];
5485 acfg->stats.got_info_size += p - buf;
5486 }
5487
5488 /* Emit got_info_offsets table */
5489 sprintf (symbol, "got_info_offsets");
5490 emit_section_change (acfg, RODATA_SECT, 1);
5491 emit_global (acfg, symbol, FALSE);
5492 emit_alignment (acfg, 8);
5493 emit_label (acfg, symbol);
5494
5495 /* No need to emit offsets for the got plt entries, the plt embeds them directly */
5496 acfg->stats.offsets_size += emit_offset_table (acfg, first_plt_got_patch, 10, (gint32*)got_info_offsets);
5497 }
5498
5499 static void
5500 emit_got (MonoAotCompile *acfg)
5501 {
5502 char symbol [256];
5503
5504 if (!acfg->llvm) {
5505 /* Don't make GOT global so accesses to it don't need relocations */
5506 sprintf (symbol, "%s", acfg->got_symbol);
5507 emit_section_change (acfg, ".bss", 0);
5508 emit_alignment (acfg, 8);
5509 emit_local_symbol (acfg, symbol, "got_end", FALSE);
5510 emit_label (acfg, symbol);
5511 if (acfg->got_offset > 0)
5512 emit_zero_bytes (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
5513
5514 sprintf (symbol, "got_end");
5515 emit_label (acfg, symbol);
5516 }
5517
5518 sprintf (symbol, "mono_aot_got_addr");
5519 emit_section_change (acfg, ".data", 0);
5520 emit_global (acfg, symbol, FALSE);
5521 emit_alignment (acfg, 8);
5522 emit_label (acfg, symbol);
5523 emit_pointer (acfg, acfg->got_symbol);
5524 }
5525
5526 typedef struct GlobalsTableEntry {
5527 guint32 value, index;
5528 struct GlobalsTableEntry *next;
5529 } GlobalsTableEntry;
5530
5531 static void
5532 emit_globals_table (MonoAotCompile *acfg)
5533 {
5534 int i, table_size;
5535 guint32 hash;
5536 GPtrArray *table;
5537 char symbol [256];
5538 GlobalsTableEntry *entry, *new_entry;
5539
5540 /*
5541 * Construct a chained hash table for mapping global names to their index in
5542 * the globals table.
5543 */
5544 table_size = g_spaced_primes_closest ((int)(acfg->globals->len * 1.5));
5545 table = g_ptr_array_sized_new (table_size);
5546 for (i = 0; i < table_size; ++i)
5547 g_ptr_array_add (table, NULL);
5548 for (i = 0; i < acfg->globals->len; ++i) {
5549 char *name = g_ptr_array_index (acfg->globals, i);
5550
5551 hash = mono_metadata_str_hash (name) % table_size;
5552
5553 /* FIXME: Allocate from the mempool */
5554 new_entry = g_new0 (GlobalsTableEntry, 1);
5555 new_entry->value = i;
5556
5557 entry = g_ptr_array_index (table, hash);
5558 if (entry == NULL) {
5559 new_entry->index = hash;
5560 g_ptr_array_index (table, hash) = new_entry;
5561 } else {
5562 while (entry->next)
5563 entry = entry->next;
5564
5565 entry->next = new_entry;
5566 new_entry->index = table->len;
5567 g_ptr_array_add (table, new_entry);
5568 }
5569 }
5570
5571 /* Emit the table */
5572 sprintf (symbol, ".Lglobals_hash");
5573 emit_section_change (acfg, RODATA_SECT, 0);
5574 emit_alignment (acfg, 8);
5575 emit_label (acfg, symbol);
5576
5577 /* FIXME: Optimize memory usage */
5578 g_assert (table_size < 65000);
5579 emit_int16 (acfg, table_size);
5580 for (i = 0; i < table->len; ++i) {
5581 GlobalsTableEntry *entry = g_ptr_array_index (table, i);
5582
5583 if (entry == NULL) {
5584 emit_int16 (acfg, 0);
5585 emit_int16 (acfg, 0);
5586 } else {
5587 emit_int16 (acfg, entry->value + 1);
5588 if (entry->next)
5589 emit_int16 (acfg, entry->next->index);
5590 else
5591 emit_int16 (acfg, 0);
5592 }
5593 }
5594
5595 /* Emit the names */
5596 for (i = 0; i < acfg->globals->len; ++i) {
5597 char *name = g_ptr_array_index (acfg->globals, i);
5598
5599 sprintf (symbol, "name_%d", i);
5600 emit_section_change (acfg, RODATA_SECT, 1);
5601 emit_label (acfg, symbol);
5602 emit_string (acfg, name);
5603 }
5604
5605 /* Emit the globals table */
5606 sprintf (symbol, ".Lglobals");
5607 emit_section_change (acfg, ".data", 0);
5608 /* This is not a global, since it is accessed by the init function */
5609 emit_alignment (acfg, 8);
5610 emit_label (acfg, symbol);
5611
5612 sprintf (symbol, "%sglobals_hash", acfg->temp_prefix);
5613 emit_pointer (acfg, symbol);
5614
5615 for (i = 0; i < acfg->globals->len; ++i) {
5616 char *name = g_ptr_array_index (acfg->globals, i);
5617
5618 sprintf (symbol, "name_%d", i);
5619 emit_pointer (acfg, symbol);
5620
5621 sprintf (symbol, "%s", name);
5622 emit_pointer (acfg, symbol);
5623 }
5624 /* Null terminate the table */
5625 emit_int32 (acfg, 0);
5626 emit_int32 (acfg, 0);
5627 }
5628
5629 static void
5630 emit_globals (MonoAotCompile *acfg)
5631 {
5632 char *build_info;
5633
5634 emit_string_symbol (acfg, "mono_assembly_guid" , acfg->image->guid);
5635
5636 emit_string_symbol (acfg, "mono_aot_version", MONO_AOT_FILE_VERSION);
5637
5638 if (acfg->aot_opts.bind_to_runtime_version) {
5639 build_info = mono_get_runtime_build_info ();
5640 emit_string_symbol (acfg, "mono_runtime_version", build_info);
5641 g_free (build_info);
5642 } else {
5643 emit_string_symbol (acfg, "mono_runtime_version", "");
5644 }
5645
5646 /*
5647 * When static linking, we emit a global which will point to the symbol table.
5648 */
5649 if (acfg->aot_opts.static_link) {
5650 char symbol [256];
5651 char *p;
5652
5653 /* Emit a string holding the assembly name */
5654 emit_string_symbol (acfg, "mono_aot_assembly_name", acfg->image->assembly->aname.name);
5655
5656 emit_globals_table (acfg);
5657
5658 /*
5659 * Emit a global symbol which can be passed by an embedding app to
5660 * mono_aot_register_module ().
5661 */
5662 #if defined(__MACH__)
5663 sprintf (symbol, "_mono_aot_module_%s_info", acfg->image->assembly->aname.name);
5664 #else
5665 sprintf (symbol, "mono_aot_module_%s_info", acfg->image->assembly->aname.name);
5666 #endif
5667
5668 /* Get rid of characters which cannot occur in symbols */
5669 p = symbol;
5670 for (p = symbol; *p; ++p) {
5671 if (!(isalnum (*p) || *p == '_'))
5672 *p = '_';
5673 }
5674 acfg->static_linking_symbol = g_strdup (symbol);
5675 emit_global_inner (acfg, symbol, FALSE);
5676 emit_alignment (acfg, 8);
5677 emit_label (acfg, symbol);
5678 sprintf (symbol, "%sglobals", acfg->temp_prefix);
5679 emit_pointer (acfg, symbol);
5680 }
5681 }
5682
5683 static void
5684 emit_autoreg (MonoAotCompile *acfg)
5685 {
5686 char *symbol;
5687
5688 /*
5689 * Emit a function into the .ctor section which will be called by the ELF
5690 * loader to register this module with the runtime.
5691 */
5692 if (! (!acfg->use_bin_writer && acfg->aot_opts.static_link && acfg->aot_opts.autoreg))
5693 return;
5694
5695 symbol = g_strdup_printf ("_%s_autoreg", acfg->static_linking_symbol);
5696
5697 arch_emit_autoreg (acfg, symbol);
5698
5699 g_free (symbol);
5700 }
5701
5702 static void
5703 emit_mem_end (MonoAotCompile *acfg)
5704 {
5705 char symbol [128];
5706
5707 sprintf (symbol, "mem_end");
5708 emit_section_change (acfg, ".text", 1);
5709 emit_global (acfg, symbol, FALSE);
5710 emit_alignment (acfg, 8);
5711 emit_label (acfg, symbol);
5712 }
5713
5714 /*
5715 * Emit a structure containing all the information not stored elsewhere.
5716 */
5717 static void
5718 emit_file_info (MonoAotCompile *acfg)
5719 {
5720 char symbol [128];
5721 int i;
5722
5723 sprintf (symbol, "mono_aot_file_info");
5724 emit_section_change (acfg, ".data", 0);
5725 emit_alignment (acfg, 8);
5726 emit_label (acfg, symbol);
5727 emit_global (acfg, symbol, FALSE);
5728
5729 /* The data emitted here must match MonoAotFileInfo in aot-runtime.c. */
5730 emit_int32 (acfg, acfg->plt_got_offset_base);
5731 emit_int32 (acfg, (int)(acfg->got_offset * sizeof (gpointer)));
5732 emit_int32 (acfg, acfg->plt_offset);
5733 emit_int32 (acfg, acfg->nmethods);
5734 emit_int32 (acfg, acfg->flags);
5735 emit_int32 (acfg, acfg->opts);
5736
5737 for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
5738 emit_int32 (acfg, acfg->num_trampolines [i]);
5739 for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
5740 emit_int32 (acfg, acfg->trampoline_got_offset_base [i]);
5741 for (i = 0; i < MONO_AOT_TRAMP_NUM; ++i)
5742 emit_int32 (acfg, acfg->trampoline_size [i]);
5743 }
5744
5745 static void
5746 emit_blob (MonoAotCompile *acfg)
5747 {
5748 char symbol [128];
5749
5750 sprintf (symbol, "blob");
5751 emit_section_change (acfg, RODATA_SECT, 1);
5752 emit_global (acfg, symbol, FALSE);
5753 emit_alignment (acfg, 8);
5754 emit_label (acfg, symbol);
5755
5756 emit_bytes (acfg, (guint8*)acfg->blob.data, acfg->blob.index);
5757 }
5758
5759 static void
5760 emit_dwarf_info (MonoAotCompile *acfg)
5761 {
5762 #ifdef EMIT_DWARF_INFO
5763 int i;
5764 char symbol [128], symbol2 [128];
5765
5766 /* DIEs for methods */
5767 for (i = 0; i < acfg->nmethods; ++i) {
5768 MonoCompile *cfg = acfg->cfgs [i];
5769
5770 if (!cfg)
5771 continue;
5772
5773 // FIXME: LLVM doesn't define .Lme_...
5774 if (cfg->compile_llvm)
5775 continue;
5776
5777 sprintf (symbol, "%s", cfg->asm_symbol);
5778 sprintf (symbol2, "%sme_%x", acfg->temp_prefix, i);
5779
5780 mono_dwarf_writer_emit_method (acfg->dwarf, cfg, cfg->method, symbol, symbol2, cfg->jit_info->code_start, cfg->jit_info->code_size, cfg->args, cfg->locals, cfg->unwind_ops, mono_debug_find_method (cfg->jit_info->method, mono_domain_get ()));
5781 }
5782 #endif
5783 }
5784
5785 static void
5786 collect_methods (MonoAotCompile *acfg)
5787 {
5788 int i;
5789 MonoImage *image = acfg->image;
5790
5791 /* Collect methods */
5792 for (i = 0; i < image->tables [MONO_TABLE_METHOD].rows; ++i) {
5793 MonoMethod *method;
5794 guint32 token = MONO_TOKEN_METHOD_DEF | (i + 1);
5795
5796 method = mono_get_method (acfg->image, token, NULL);
5797
5798 if (!method) {
5799 printf ("Failed to load method 0x%x from '%s'.\n", token, image->name);
5800 exit (1);
5801 }
5802
5803 /* Load all methods eagerly to skip the slower lazy loading code */
5804 mono_class_setup_methods (method->klass);
5805
5806 if (acfg->aot_opts.full_aot && method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL) {
5807 /* Compile the wrapper instead */
5808 /* We do this here instead of add_wrappers () because it is easy to do it here */
5809 MonoMethod *wrapper = mono_marshal_get_native_wrapper (method, check_for_pending_exc, TRUE);
5810 method = wrapper;
5811 }
5812
5813 /* FIXME: Some mscorlib methods don't have debug info */
5814 /*
5815 if (acfg->aot_opts.soft_debug && !method->wrapper_type) {
5816 if (!((method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) ||
5817 (method->iflags & METHOD_IMPL_ATTRIBUTE_RUNTIME) ||
5818 (method->flags & METHOD_ATTRIBUTE_ABSTRACT) ||
5819 (method->iflags & METHOD_IMPL_ATTRIBUTE_INTERNAL_CALL))) {
5820 if (!mono_debug_lookup_method (method)) {
5821 fprintf (stderr, "Method %s has no debug info, probably the .mdb file for the assembly is missing.\n", mono_method_full_name (method, TRUE));
5822 exit (1);
5823 }
5824 }
5825 }
5826 */
5827
5828 /* Since we add the normal methods first, their index will be equal to their zero based token index */
5829 add_method_with_index (acfg, method, i, FALSE);
5830 acfg->method_index ++;
5831 }
5832
5833 add_generic_instances (acfg);
5834
5835 if (acfg->aot_opts.full_aot)
5836 add_wrappers (acfg);
5837 }
5838
5839 static void
5840 compile_methods (MonoAotCompile *acfg)
5841 {
5842 int i, methods_len;
5843
5844 if (acfg->aot_opts.nthreads > 0) {
5845 GPtrArray *frag;
5846 int len, j;
5847 GPtrArray *threads;
5848 HANDLE handle;
5849 gpointer *user_data;
5850 MonoMethod **methods;
5851
5852 methods_len = acfg->methods->len;
5853
5854 len = acfg->methods->len / acfg->aot_opts.nthreads;
5855 g_assert (len > 0);
5856 /*
5857 * Partition the list of methods into fragments, and hand it to threads to
5858 * process.
5859 */
5860 threads = g_ptr_array_new ();
5861 /* Make a copy since acfg->methods is modified by compile_method () */
5862 methods = g_new0 (MonoMethod*, methods_len);
5863 //memcpy (methods, g_ptr_array_index (acfg->methods, 0), sizeof (MonoMethod*) * methods_len);
5864 for (i = 0; i < methods_len; ++i)
5865 methods [i] = g_ptr_array_index (acfg->methods, i);
5866 i = 0;
5867 while (i < methods_len) {
5868 frag = g_ptr_array_new ();
5869 for (j = 0; j < len; ++j) {
5870 if (i < methods_len) {
5871 g_ptr_array_add (frag, methods [i]);
5872 i ++;
5873 }
5874 }
5875
5876 user_data = g_new0 (gpointer, 3);
5877 user_data [0] = mono_domain_get ();
5878 user_data [1] = acfg;
5879 user_data [2] = frag;
5880
5881 handle = mono_create_thread (NULL, 0, (gpointer)compile_thread_main, user_data, 0, NULL);
5882 g_ptr_array_add (threads, handle);
5883 }
5884 g_free (methods);
5885
5886 for (i = 0; i < threads->len; ++i) {
5887 WaitForSingleObjectEx (g_ptr_array_index (threads, i), INFINITE, FALSE);
5888 }
5889 } else {
5890 methods_len = 0;
5891 }
5892
5893 /* Compile methods added by compile_method () or all methods if nthreads == 0 */
5894 for (i = methods_len; i < acfg->methods->len; ++i) {
5895 /* This can new methods to acfg->methods */
5896 compile_method (acfg, g_ptr_array_index (acfg->methods, i));
5897 }
5898 }
5899
5900 static int
5901 compile_asm (MonoAotCompile *acfg)
5902 {
5903 char *command, *objfile;
5904 char *outfile_name, *tmp_outfile_name;
5905 const char *tool_prefix = acfg->aot_opts.tool_prefix ? acfg->aot_opts.tool_prefix : "";
5906
5907 #if defined(TARGET_AMD64)
5908 #define AS_OPTIONS "--64"
5909 #elif defined(TARGET_POWERPC64)
5910 #define AS_OPTIONS "-a64 -mppc64"
5911 #define LD_OPTIONS "-m elf64ppc"
5912 #elif defined(sparc) && SIZEOF_VOID_P == 8
5913 #define AS_OPTIONS "-xarch=v9"
5914 #else
5915 #define AS_OPTIONS ""
5916 #endif
5917
5918 #ifndef LD_OPTIONS
5919 #define LD_OPTIONS ""
5920 #endif
5921
5922 #ifdef ENABLE_LLVM
5923 #define EH_LD_OPTIONS "--eh-frame-hdr"
5924 #else
5925 #define EH_LD_OPTIONS ""
5926 #endif
5927
5928 if (acfg->aot_opts.asm_only) {
5929 printf ("Output file: '%s'.\n", acfg->tmpfname);
5930 if (acfg->aot_opts.static_link)
5931 printf ("Linking symbol: '%s'.\n", acfg->static_linking_symbol);
5932 return 0;
5933 }
5934
5935 if (acfg->aot_opts.static_link) {
5936 if (acfg->aot_opts.outfile)
5937 objfile = g_strdup_printf ("%s", acfg->aot_opts.outfile);
5938 else
5939 objfile = g_strdup_printf ("%s.o", acfg->image->name);
5940 } else {
5941 objfile = g_strdup_printf ("%s.o", acfg->tmpfname);
5942 }
5943 command = g_strdup_printf ("%sas %s %s -o %s", tool_prefix, AS_OPTIONS, acfg->tmpfname, objfile);
5944 printf ("Executing the native assembler: %s\n", command);
5945 if (system (command) != 0) {
5946 g_free (command);
5947 g_free (objfile);
5948 return 1;
5949 }
5950
5951 g_free (command);
5952
5953 if (acfg->aot_opts.static_link) {
5954 printf ("Output file: '%s'.\n", objfile);
5955 printf ("Linking symbol: '%s'.\n", acfg->static_linking_symbol);
5956 g_free (objfile);
5957 return 0;
5958 }
5959
5960 if (acfg->aot_opts.outfile)
5961 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
5962 else
5963 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
5964
5965 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
5966
5967 #if defined(sparc)
5968 command = g_strdup_printf ("ld -shared -G -o %s %s.o", tmp_outfile_name, acfg->tmpfname);
5969 #elif defined(__ppc__) && defined(__MACH__)
5970 command = g_strdup_printf ("gcc -dynamiclib -o %s %s.o", tmp_outfile_name, acfg->tmpfname);
5971 #elif defined(HOST_WIN32)
5972 command = g_strdup_printf ("gcc -shared --dll -mno-cygwin -o %s %s.o", tmp_outfile_name, acfg->tmpfname);
5973 #else
5974 command = g_strdup_printf ("%sld %s %s -shared -o %s %s.o", tool_prefix, EH_LD_OPTIONS, LD_OPTIONS, tmp_outfile_name, acfg->tmpfname);
5975 #endif
5976 printf ("Executing the native linker: %s\n", command);
5977 if (system (command) != 0) {
5978 g_free (tmp_outfile_name);
5979 g_free (outfile_name);
5980 g_free (command);
5981 g_free (objfile);
5982 return 1;
5983 }
5984
5985 g_free (command);
5986 unlink (objfile);
5987 /*com = g_strdup_printf ("strip --strip-unneeded %s%s", acfg->image->name, SHARED_EXT);
5988 printf ("Stripping the binary: %s\n", com);
5989 system (com);
5990 g_free (com);*/
5991
5992 #if defined(TARGET_ARM) && !defined(__MACH__)
5993 /*
5994 * gas generates 'mapping symbols' each time code and data is mixed, which
5995 * happens a lot in emit_and_reloc_code (), so we need to get rid of them.
5996 */
5997 command = g_strdup_printf ("%sstrip --strip-symbol=\\$a --strip-symbol=\\$d %s", tool_prefix, tmp_outfile_name);
5998 printf ("Stripping the binary: %s\n", command);
5999 if (system (command) != 0) {
6000 g_free (tmp_outfile_name);
6001 g_free (outfile_name);
6002 g_free (command);
6003 g_free (objfile);
6004 return 1;
6005 }
6006 #endif
6007
6008 rename (tmp_outfile_name, outfile_name);
6009
6010 g_free (tmp_outfile_name);
6011 g_free (outfile_name);
6012 g_free (objfile);
6013
6014 if (acfg->aot_opts.save_temps)
6015 printf ("Retained input file.\n");
6016 else
6017 unlink (acfg->tmpfname);
6018
6019 return 0;
6020 }
6021
6022 static MonoAotCompile*
6023 acfg_create (MonoAssembly *ass, guint32 opts)
6024 {
6025 MonoImage *image = ass->image;
6026 MonoAotCompile *acfg;
6027 int i;
6028
6029 acfg = g_new0 (MonoAotCompile, 1);
6030 acfg->methods = g_ptr_array_new ();
6031 acfg->method_indexes = g_hash_table_new (NULL, NULL);
6032 acfg->method_depth = g_hash_table_new (NULL, NULL);
6033 acfg->plt_offset_to_entry = g_hash_table_new (NULL, NULL);
6034 acfg->patch_to_plt_entry = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
6035 acfg->patch_to_got_offset = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
6036 acfg->patch_to_got_offset_by_type = g_new0 (GHashTable*, MONO_PATCH_INFO_NUM);
6037 for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
6038 acfg->patch_to_got_offset_by_type [i] = g_hash_table_new (mono_patch_info_hash, mono_patch_info_equal);
6039 acfg->got_patches = g_ptr_array_new ();
6040 acfg->method_to_cfg = g_hash_table_new (NULL, NULL);
6041 acfg->token_info_hash = g_hash_table_new_full (NULL, NULL, NULL, g_free);
6042 acfg->image_hash = g_hash_table_new (NULL, NULL);
6043 acfg->image_table = g_ptr_array_new ();
6044 acfg->globals = g_ptr_array_new ();
6045 acfg->image = image;
6046 acfg->opts = opts;
6047 acfg->mempool = mono_mempool_new ();
6048 acfg->extra_methods = g_ptr_array_new ();
6049 acfg->unwind_info_offsets = g_hash_table_new (NULL, NULL);
6050 acfg->unwind_ops = g_ptr_array_new ();
6051 acfg->method_label_hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
6052 InitializeCriticalSection (&acfg->mutex);
6053
6054 return acfg;
6055 }
6056
6057 static void
6058 acfg_free (MonoAotCompile *acfg)
6059 {
6060 int i;
6061
6062 img_writer_destroy (acfg->w);
6063 for (i = 0; i < acfg->nmethods; ++i)
6064 if (acfg->cfgs [i])
6065 g_free (acfg->cfgs [i]);
6066 g_free (acfg->cfgs);
6067 g_free (acfg->static_linking_symbol);
6068 g_free (acfg->got_symbol);
6069 g_free (acfg->plt_symbol);
6070 g_ptr_array_free (acfg->methods, TRUE);
6071 g_ptr_array_free (acfg->got_patches, TRUE);
6072 g_ptr_array_free (acfg->image_table, TRUE);
6073 g_ptr_array_free (acfg->globals, TRUE);
6074 g_ptr_array_free (acfg->unwind_ops, TRUE);
6075 g_hash_table_destroy (acfg->method_indexes);
6076 g_hash_table_destroy (acfg->method_depth);
6077 g_hash_table_destroy (acfg->plt_offset_to_entry);
6078 g_hash_table_destroy (acfg->patch_to_plt_entry);
6079 g_hash_table_destroy (acfg->patch_to_got_offset);
6080 g_hash_table_destroy (acfg->method_to_cfg);
6081 g_hash_table_destroy (acfg->token_info_hash);
6082 g_hash_table_destroy (acfg->image_hash);
6083 g_hash_table_destroy (acfg->unwind_info_offsets);
6084 g_hash_table_destroy (acfg->method_label_hash);
6085 for (i = 0; i < MONO_PATCH_INFO_NUM; ++i)
6086 g_hash_table_destroy (acfg->patch_to_got_offset_by_type [i]);
6087 g_free (acfg->patch_to_got_offset_by_type);
6088 mono_mempool_destroy (acfg->mempool);
6089 g_free (acfg);
6090 }
6091
6092 int
6093 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
6094 {
6095 MonoImage *image = ass->image;
6096 int i, res;
6097 MonoAotCompile *acfg;
6098 char *outfile_name, *tmp_outfile_name, *p;
6099 TV_DECLARE (atv);
6100 TV_DECLARE (btv);
6101
6102 printf ("Mono Ahead of Time compiler - compiling assembly %s\n", image->name);
6103
6104 acfg = acfg_create (ass, opts);
6105
6106 memset (&acfg->aot_opts, 0, sizeof (acfg->aot_opts));
6107 acfg->aot_opts.write_symbols = TRUE;
6108 acfg->aot_opts.ntrampolines = 1024;
6109 acfg->aot_opts.nrgctx_trampolines = 1024;
6110 acfg->aot_opts.nimt_trampolines = 128;
6111
6112 mono_aot_parse_options (aot_options, &acfg->aot_opts);
6113
6114 if (acfg->aot_opts.static_link)
6115 acfg->aot_opts.autoreg = TRUE;
6116
6117 //acfg->aot_opts.print_skipped_methods = TRUE;
6118
6119 #ifndef MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES
6120 if (acfg->aot_opts.full_aot) {
6121 printf ("--aot=full is not supported on this platform.\n");
6122 return 1;
6123 }
6124 #endif
6125
6126 if (acfg->aot_opts.static_link)
6127 acfg->aot_opts.asm_writer = TRUE;
6128
6129 if (acfg->aot_opts.soft_debug) {
6130 MonoDebugOptions *opt = mini_get_debug_options ();
6131
6132 opt->mdb_optimizations = TRUE;
6133 opt->gen_seq_points = TRUE;
6134
6135 if (mono_debug_format == MONO_DEBUG_FORMAT_NONE) {
6136 fprintf (stderr, "The soft-debug AOT option requires the --debug option.\n");
6137 return 1;
6138 }
6139 }
6140
6141 #ifdef ENABLE_LLVM
6142 acfg->llvm = TRUE;
6143 acfg->aot_opts.asm_writer = TRUE;
6144 acfg->flags |= MONO_AOT_FILE_FLAG_WITH_LLVM;
6145 #endif
6146
6147 if (acfg->aot_opts.full_aot)
6148 acfg->flags |= MONO_AOT_FILE_FLAG_FULL_AOT;
6149
6150 load_profile_files (acfg);
6151
6152 acfg->num_trampolines [MONO_AOT_TRAMP_SPECIFIC] = acfg->aot_opts.full_aot ? acfg->aot_opts.ntrampolines : 0;
6153 #ifdef MONO_ARCH_HAVE_STATIC_RGCTX_TRAMPOLINE
6154 acfg->num_trampolines [MONO_AOT_TRAMP_STATIC_RGCTX] = acfg->aot_opts.full_aot ? acfg->aot_opts.nrgctx_trampolines : 0;
6155 #endif
6156 acfg->num_trampolines [MONO_AOT_TRAMP_IMT_THUNK] = acfg->aot_opts.full_aot ? acfg->aot_opts.nimt_trampolines : 0;
6157
6158 acfg->got_symbol_base = g_strdup_printf ("mono_aot_%s_got", acfg->image->assembly->aname.name);
6159 acfg->plt_symbol = g_strdup_printf ("mono_aot_%s_plt", acfg->image->assembly->aname.name);
6160
6161 /* Get rid of characters which cannot occur in symbols */
6162 for (p = acfg->got_symbol_base; *p; ++p) {
6163 if (!(isalnum (*p) || *p == '_'))
6164 *p = '_';
6165 }
6166 for (p = acfg->plt_symbol; *p; ++p) {
6167 if (!(isalnum (*p) || *p == '_'))
6168 *p = '_';
6169 }
6170
6171 acfg->temp_prefix = img_writer_get_temp_label_prefix (NULL);
6172
6173 /*
6174 * The prefix LLVM likes to put in front of symbol names on darwin.
6175 * The mach-os specs require this for globals, but LLVM puts them in front of all
6176 * symbols. We need to handle this, since we need to refer to LLVM generated
6177 * symbols.
6178 */
6179 acfg->llvm_label_prefix = "";
6180 if (acfg->llvm)
6181 acfg->llvm_label_prefix = LLVM_LABEL_PREFIX;
6182
6183 acfg->method_index = 1;
6184
6185 collect_methods (acfg);
6186
6187 acfg->cfgs_size = acfg->methods->len + 32;
6188 acfg->cfgs = g_new0 (MonoCompile*, acfg->cfgs_size);
6189
6190 /* PLT offset 0 is reserved for the PLT trampoline */
6191 acfg->plt_offset = 1;
6192
6193 #ifdef ENABLE_LLVM
6194 llvm_acfg = acfg;
6195 mono_llvm_create_aot_module (acfg->got_symbol_base);
6196 #endif
6197
6198 /* GOT offset 0 is reserved for the address of the current assembly */
6199 {
6200 MonoJumpInfo *ji;
6201
6202 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
6203 ji->type = MONO_PATCH_INFO_IMAGE;
6204 ji->data.image = acfg->image;
6205
6206 get_got_offset (acfg, ji);
6207
6208 /* Slot 1 is reserved for the mscorlib got addr */
6209 ji = mono_mempool_alloc0 (acfg->mempool, sizeof (MonoAotCompile));
6210 ji->type = MONO_PATCH_INFO_MSCORLIB_GOT_ADDR;
6211 get_got_offset (acfg, ji);
6212 }
6213
6214 TV_GETTIME (atv);
6215
6216 compile_methods (acfg);
6217
6218 TV_GETTIME (btv);
6219
6220 acfg->stats.jit_time = TV_ELAPSED (atv, btv);
6221
6222 TV_GETTIME (atv);
6223
6224 #ifdef ENABLE_LLVM
6225 if (acfg->llvm) {
6226 if (acfg->aot_opts.asm_only) {
6227 if (acfg->aot_opts.outfile)
6228 acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
6229 else
6230 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->image->name);
6231 } else {
6232 acfg->tmpfname = g_strdup ("temp.s");
6233 }
6234 }
6235
6236 emit_llvm_file (acfg);
6237 #endif
6238
6239 if (!acfg->aot_opts.asm_only && !acfg->aot_opts.asm_writer && bin_writer_supported ()) {
6240 if (acfg->aot_opts.outfile)
6241 outfile_name = g_strdup_printf ("%s", acfg->aot_opts.outfile);
6242 else
6243 outfile_name = g_strdup_printf ("%s%s", acfg->image->name, SHARED_EXT);
6244
6245 /*
6246 * Can't use g_file_open_tmp () as it will be deleted at exit, and
6247 * it might be in another file system so the rename () won't work.
6248 */
6249 tmp_outfile_name = g_strdup_printf ("%s.tmp", outfile_name);
6250
6251 acfg->fp = fopen (tmp_outfile_name, "w");
6252 if (!acfg->fp) {
6253 printf ("Unable to create temporary file '%s': %s\n", tmp_outfile_name, strerror (errno));
6254 return 1;
6255 }
6256
6257 acfg->w = img_writer_create (acfg->fp, TRUE);
6258 acfg->use_bin_writer = TRUE;
6259 } else {
6260 if (acfg->llvm) {
6261 /* Append to the .s file created by llvm */
6262 /* FIXME: Use multiple files instead */
6263 acfg->fp = fopen (acfg->tmpfname, "a+");
6264 } else {
6265 if (acfg->aot_opts.asm_only) {
6266 if (acfg->aot_opts.outfile)
6267 acfg->tmpfname = g_strdup_printf ("%s", acfg->aot_opts.outfile);
6268 else
6269 acfg->tmpfname = g_strdup_printf ("%s.s", acfg->image->name);
6270 acfg->fp = fopen (acfg->tmpfname, "w+");
6271 } else {
6272 int i = g_file_open_tmp ("mono_aot_XXXXXX", &acfg->tmpfname, NULL);
6273 acfg->fp = fdopen (i, "w+");
6274 }
6275 g_assert (acfg->fp);
6276 }
6277 acfg->w = img_writer_create (acfg->fp, FALSE);
6278
6279 tmp_outfile_name = NULL;
6280 outfile_name = NULL;
6281 }
6282
6283 acfg->got_symbol = g_strdup_printf ("%s%s", acfg->llvm_label_prefix, acfg->got_symbol_base);
6284
6285 /* Compute symbols for methods */
6286 for (i = 0; i < acfg->nmethods; ++i) {
6287 if (acfg->cfgs [i]) {
6288 MonoCompile *cfg = acfg->cfgs [i];
6289 int method_index = get_method_index (acfg, cfg->orig_method);
6290
6291 cfg->asm_symbol = g_strdup_printf ("%s%sm_%x", acfg->temp_prefix, LLVM_LABEL_PREFIX, method_index);
6292 }
6293 }
6294
6295 if (!acfg->aot_opts.nodebug)
6296 acfg->dwarf = mono_dwarf_writer_create (acfg->w, NULL, 0, FALSE);
6297
6298 img_writer_emit_start (acfg->w);
6299
6300 if (acfg->dwarf)
6301 mono_dwarf_writer_emit_base_info (acfg->dwarf, mono_unwind_get_cie_program ());
6302
6303 emit_code (acfg);
6304
6305 emit_info (acfg);
6306
6307 emit_extra_methods (acfg);
6308
6309 emit_trampolines (acfg);
6310
6311 emit_class_name_table (acfg);
6312
6313 emit_got_info (acfg);
6314
6315 emit_exception_info (acfg);
6316
6317 emit_unwind_info (acfg);
6318
6319 emit_class_info (acfg);
6320
6321 emit_plt (acfg);
6322
6323 emit_image_table (acfg);
6324
6325 emit_got (acfg);
6326
6327 emit_file_info (acfg);
6328
6329 emit_blob (acfg);
6330
6331 emit_globals (acfg);
6332
6333 emit_autoreg (acfg);
6334
6335 if (acfg->dwarf) {
6336 emit_dwarf_info (acfg);
6337 mono_dwarf_writer_close (acfg->dwarf);
6338 }
6339
6340 emit_mem_end (acfg);
6341
6342 TV_GETTIME (btv);
6343
6344 acfg->stats.gen_time = TV_ELAPSED (atv, btv);
6345
6346 if (acfg->llvm)
6347 g_assert (acfg->got_offset <= acfg->final_got_size);
6348
6349 printf ("Code: %d Info: %d Ex Info: %d Unwind Info: %d Class Info: %d PLT: %d GOT Info: %d GOT: %d Offsets: %d\n", acfg->stats.code_size, acfg->stats.info_size, acfg->stats.ex_info_size, acfg->stats.unwind_info_size, acfg->stats.class_info_size, acfg->plt_offset, acfg->stats.got_info_size, (int)(acfg->got_offset * sizeof (gpointer)), acfg->stats.offsets_size);
6350
6351 TV_GETTIME (atv);
6352 res = img_writer_emit_writeout (acfg->w);
6353 if (res != 0) {
6354 acfg_free (acfg);
6355 return res;
6356 }
6357 if (acfg->use_bin_writer) {
6358 int err = rename (tmp_outfile_name, outfile_name);
6359
6360 if (err) {
6361 printf ("Unable to rename '%s' to '%s': %s\n", tmp_outfile_name, outfile_name, strerror (errno));
6362 return 1;
6363 }
6364 } else {
6365 res = compile_asm (acfg);
6366 if (res != 0) {
6367 acfg_free (acfg);
6368 return res;
6369 }
6370 }
6371 TV_GETTIME (btv);
6372 acfg->stats.link_time = TV_ELAPSED (atv, btv);
6373
6374 printf ("Compiled %d out of %d methods (%d%%)\n", acfg->stats.ccount, acfg->stats.mcount, acfg->stats.mcount ? (acfg->stats.ccount * 100) / acfg->stats.mcount : 100);
6375 if (acfg->stats.genericcount)
6376 printf ("%d methods are generic (%d%%)\n", acfg->stats.genericcount, acfg->stats.mcount ? (acfg->stats.genericcount * 100) / acfg->stats.mcount : 100);
6377 if (acfg->stats.abscount)
6378 printf ("%d methods contain absolute addresses (%d%%)\n", acfg->stats.abscount, acfg->stats.mcount ? (acfg->stats.abscount * 100) / acfg->stats.mcount : 100);
6379 if (acfg->stats.lmfcount)
6380 printf ("%d methods contain lmf pointers (%d%%)\n", acfg->stats.lmfcount, acfg->stats.mcount ? (acfg->stats.lmfcount * 100) / acfg->stats.mcount : 100);
6381 if (acfg->stats.ocount)
6382 printf ("%d methods have other problems (%d%%)\n", acfg->stats.ocount, acfg->stats.mcount ? (acfg->stats.ocount * 100) / acfg->stats.mcount : 100);
6383 if (acfg->llvm)
6384 printf ("Methods compiled with LLVM: %d (%d%%)\n", acfg->stats.llvm_count, acfg->stats.mcount ? (acfg->stats.llvm_count * 100) / acfg->stats.mcount : 100);
6385 printf ("Methods without GOT slots: %d (%d%%)\n", acfg->stats.methods_without_got_slots, acfg->stats.mcount ? (acfg->stats.methods_without_got_slots * 100) / acfg->stats.mcount : 100);
6386 printf ("Direct calls: %d (%d%%)\n", acfg->stats.direct_calls, acfg->stats.all_calls ? (acfg->stats.direct_calls * 100) / acfg->stats.all_calls : 100);
6387
6388 if (acfg->aot_opts.stats) {
6389 int i;
6390
6391 printf ("GOT slot distribution:\n");
6392 for (i = 0; i < MONO_PATCH_INFO_NONE; ++i)
6393 if (acfg->stats.got_slot_types [i])
6394 printf ("\t%s: %d\n", get_patch_name (i), acfg->stats.got_slot_types [i]);
6395 }
6396
6397 printf ("JIT time: %d ms, Generation time: %d ms, Assembly+Link time: %d ms.\n", acfg->stats.jit_time / 1000, acfg->stats.gen_time / 1000, acfg->stats.link_time / 1000);
6398
6399 acfg_free (acfg);
6400
6401 return 0;
6402 }
6403
6404 #else
6405
6406 /* AOT disabled */
6407
6408 int
6409 mono_compile_assembly (MonoAssembly *ass, guint32 opts, const char *aot_options)
6410 {
6411 return 0;
6412 }
6413
6414 #endif
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