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- Fix atomic ops on s390
[mono.git] / mono / mini / mini-s390.c
blobf5b5551e00f26d49c16eb0697bb8fe9f2f3d6f9a
1 /*------------------------------------------------------------------*/
2 /* */
3 /* Name - mini-s390.c */
4 /* */
5 /* Function - S/390 backend for the Mono code generator. */
6 /* */
7 /* Name - Neale Ferguson (Neale.Ferguson@SoftwareAG-usa.com) */
8 /* */
9 /* Date - January, 2004 */
10 /* */
11 /* Derivation - From mini-x86 & mini-ppc by - */
12 /* Paolo Molaro (lupus@ximian.com) */
13 /* Dietmar Maurer (dietmar@ximian.com) */
14 /* */
15 /*------------------------------------------------------------------*/
16
17 /*------------------------------------------------------------------*/
18 /* D e f i n e s */
19 /*------------------------------------------------------------------*/
20
21 #define NOT_IMPLEMENTED(x) \
22 g_error ("FIXME: %s is not yet implemented.", x);
23
24 #define EMIT_COND_BRANCH(ins,cond) \
25 { \
26 if (ins->flags & MONO_INST_BRLABEL) { \
27 if (ins->inst_i0->inst_c0) { \
28 int displace; \
29 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2; \
30 if (s390_is_uimm16(displace)) { \
31 s390_brc (code, cond, displace); \
32 } else { \
33 s390_jcl (code, cond, displace); \
34 } \
35 } else { \
36 mono_add_patch_info (cfg, code - cfg->native_code, \
37 MONO_PATCH_INFO_LABEL, ins->inst_i0); \
38 s390_jcl (code, cond, 0); \
39 } \
40 } else { \
41 if (ins->inst_true_bb->native_offset) { \
42 int displace; \
43 displace = ((cfg->native_code + \
44 ins->inst_true_bb->native_offset) - code) / 2; \
45 if (s390_is_uimm16(displace)) { \
46 s390_brc (code, cond, displace); \
47 } else { \
48 s390_jcl (code, cond, displace); \
49 } \
50 } else { \
51 mono_add_patch_info (cfg, code - cfg->native_code, \
52 MONO_PATCH_INFO_BB, ins->inst_true_bb); \
53 s390_jcl (code, cond, 0); \
54 } \
55 } \
56 }
57
58 #define EMIT_UNCOND_BRANCH(ins) \
59 { \
60 if (ins->flags & MONO_INST_BRLABEL) { \
61 if (ins->inst_i0->inst_c0) { \
62 int displace; \
63 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2; \
64 if (s390_is_uimm16(displace)) { \
65 s390_brc (code, S390_CC_UN, displace); \
66 } else { \
67 s390_jcl (code, S390_CC_UN, displace); \
68 } \
69 } else { \
70 mono_add_patch_info (cfg, code - cfg->native_code, \
71 MONO_PATCH_INFO_LABEL, ins->inst_i0); \
72 s390_jcl (code, S390_CC_UN, 0); \
73 } \
74 } else { \
75 if (ins->inst_target_bb->native_offset) { \
76 int displace; \
77 displace = ((cfg->native_code + \
78 ins->inst_target_bb->native_offset) - code) / 2; \
79 if (s390_is_uimm16(displace)) { \
80 s390_brc (code, S390_CC_UN, displace); \
81 } else { \
82 s390_jcl (code, S390_CC_UN, displace); \
83 } \
84 } else { \
85 mono_add_patch_info (cfg, code - cfg->native_code, \
86 MONO_PATCH_INFO_BB, ins->inst_target_bb); \
87 s390_jcl (code, S390_CC_UN, 0); \
88 } \
89 } \
90 }
91
92 #define EMIT_COND_SYSTEM_EXCEPTION(cond,exc_name) \
93 do { \
94 mono_add_patch_info (cfg, code - cfg->native_code, \
95 MONO_PATCH_INFO_EXC, exc_name); \
96 s390_jcl (code, cond, 0); \
97 } while (0);
98
99 #undef DEBUG
100 #define DEBUG(a) if (cfg->verbose_level > 1) a
101
102 #define MAX_EXC 16
103
104 /*----------------------------------------*/
105 /* use s390_r2-s390_r5 as temp registers */
106 /*----------------------------------------*/
107 #define S390_CALLER_REGS (0x10fc)
108 #define reg_is_freeable(r) (S390_CALLER_REGS & 1 << (r))
109
110 /*----------------------------------------*/
111 /* use s390_f1/s390_f3-s390_f15 as temps */
112 /*----------------------------------------*/
113 #define S390_CALLER_FREGS (0xfffa)
114 #define freg_is_freeable(r) ((r) >= 1 && (r) <= 14)
115
116 #define S390_TRACE_STACK_SIZE (5*sizeof(gint32)+3*sizeof(gdouble))
117
118 #define MAX (a, b) ((a) > (b) ? (a) : (b))
119
120 /*========================= End of Defines =========================*/
121
122 /*------------------------------------------------------------------*/
123 /* I n c l u d e s */
124 /*------------------------------------------------------------------*/
125
126 #include "mini.h"
127 #include <string.h>
128
129 #include <mono/metadata/appdomain.h>
130 #include <mono/metadata/debug-helpers.h>
131 #include <mono/metadata/profiler-private.h>
132 #include <mono/utils/mono-math.h>
133
134 #include "mini-s390.h"
135 #include "inssel.h"
136 #include "cpu-s390.h"
137
138 /*========================= End of Includes ========================*/
139
140 /*------------------------------------------------------------------*/
141 /* T y p e d e f s */
142 /*------------------------------------------------------------------*/
143
144 typedef struct {
145 guint stack_size,
146 local_size,
147 code_size,
148 retStruct;
149 } size_data;
150
151 /*------------------------------------------------------------------*/
152 /* Used by the instrument_emit_epilog */
153 /*------------------------------------------------------------------*/
154
155 enum {
156 SAVE_NONE,
157 SAVE_STRUCT,
158 SAVE_ONE,
159 SAVE_TWO,
160 SAVE_FP
161 };
162
163 typedef struct {
164 int born_in;
165 int killed_in;
166 int last_use;
167 int prev_use;
168 } RegTrack;
169
170 typedef struct InstList InstList;
171
172 struct InstList {
173 InstList *prev;
174 InstList *next;
175 MonoInst *data;
176 };
177
178 enum {
179 RegTypeGeneral,
180 RegTypeBase,
181 RegTypeFP,
182 RegTypeStructByVal,
183 RegTypeStructByAddr
184 };
185
186 typedef struct {
187 gint32 offset; /* offset from caller's stack */
188 gint32 offparm; /* offset on callee's stack */
189 guint16 vtsize; /* in param area */
190 guint8 reg;
191 guint8 regtype; /* See RegType* */
192 guint32 size; /* Size of structure used by RegTypeStructByVal */
193 } ArgInfo;
194
195 typedef struct {
196 int nargs;
197 guint32 stack_usage;
198 guint32 struct_ret;
199 ArgInfo ret;
200 ArgInfo sigCookie;
201 ArgInfo args [1];
202 } CallInfo;
203
204 typedef struct {
205 gint32 gr[5]; /* R2-R6 */
206 gdouble fp[3]; /* F0-F2 */
207 } __attribute__ ((packed)) RegParm;
208
209 /*========================= End of Typedefs ========================*/
210
211 /*------------------------------------------------------------------*/
212 /* P r o t o t y p e s */
213 /*------------------------------------------------------------------*/
214
215 static guint32 * emit_memcpy (guint8 *, int, int, int, int, int);
216 static void indent (int);
217 static guint8 * backUpStackPtr(MonoCompile *, guint8 *);
218 static void decodeParm (MonoType *, void *, int);
219 static void enter_method (MonoMethod *, RegParm *, char *);
220 static void leave_method (MonoMethod *, ...);
221 static gboolean is_regsize_var (MonoType *);
222 static void add_general (guint *, size_data *, ArgInfo *, gboolean);
223 static CallInfo * calculate_sizes (MonoMethodSignature *, size_data *, gboolean);
224 static void peephole_pass (MonoCompile *, MonoBasicBlock *);
225 static int mono_spillvar_offset (MonoCompile *, int);
226 static int mono_spillvar_offset_float (MonoCompile *, int);
227 static void print_ins (int, MonoInst *);
228 static void print_regtrack (RegTrack *, int);
229 static InstList * inst_list_prepend (MonoMemPool *, InstList *, MonoInst *);
230 static int get_register_force_spilling (MonoCompile *, InstList *, MonoInst *, int);
231 static int get_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
232 static int get_float_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
233 static MonoInst * create_copy_ins (MonoCompile *, int, int, MonoInst *);
234 static MonoInst * create_copy_ins_float (MonoCompile *, int, int, MonoInst *);
235 static MonoInst * create_spilled_store (MonoCompile *, int, int, int, MonoInst *);
236 static MonoInst * create_spilled_store_float (MonoCompile *, int, int, int, MonoInst *);
237 static void insert_before_ins (MonoInst *, InstList *, MonoInst *);
238 static int alloc_int_reg (MonoCompile *, InstList *, MonoInst *, int, guint32);
239 static guchar * emit_float_to_int (MonoCompile *, guchar *, int, int, int, gboolean);
240 static unsigned char * mono_emit_stack_alloc (guchar *, MonoInst *);
241
242 /*========================= End of Prototypes ======================*/
243
244 /*------------------------------------------------------------------*/
245 /* G l o b a l V a r i a b l e s */
246 /*------------------------------------------------------------------*/
247
248 int mono_exc_esp_offset = 0;
249
250 static int indent_level = 0;
251
252 static const char*const * ins_spec = s390;
253
254 static gboolean tls_offset_inited = FALSE;
255
256 static int appdomain_tls_offset = -1,
257 lmf_tls_offset = -1,
258 thread_tls_offset = -1;
259
260 #if 0
261
262 extern __thread MonoDomain *tls_appdomain;
263 extern __thread MonoThread *tls_current_object;
264 extern __thread gpointer mono_lmf_addr;
265
266 #endif
267
268 /*====================== End of Global Variables ===================*/
269
270 /*------------------------------------------------------------------*/
271 /* */
272 /* Name - mono_arch_regname */
273 /* */
274 /* Function - Returns the name of the register specified by */
275 /* the input parameter. */
276 /* */
277 /*------------------------------------------------------------------*/
278
279 const char*
280 mono_arch_regname (int reg) {
281 static const char * rnames[] = {
282 "s390_r0", "s390_sp", "s390_r2", "s390_r3", "s390_r4",
283 "s390_r5", "s390_r6", "s390_r7", "s390_r8", "s390_r9",
284 "s390_r10", "s390_r11", "s390_r12", "s390_r13", "s390_r14",
285 "s390_r15"
286 };
287 if (reg >= 0 && reg < 16)
288 return rnames [reg];
289 return "unknown";
290 }
291
292 /*========================= End of Function ========================*/
293
294 /*------------------------------------------------------------------*/
295 /* */
296 /* Name - emit_memcpy */
297 /* */
298 /* Function - Emit code to move from memory-to-memory based on */
299 /* the size of the variable. r0 is overwritten. */
300 /* */
301 /*------------------------------------------------------------------*/
302
303 static guint32*
304 emit_memcpy (guint8 *code, int size, int dreg, int doffset, int sreg, int soffset)
305 {
306 switch (size) {
307 case 4 :
308 s390_l (code, s390_r0, 0, sreg, soffset);
309 s390_st (code, s390_r0, 0, dreg, doffset);
310 break;
311
312 case 3 :
313 s390_icm (code, s390_r0, 14, sreg, soffset);
314 s390_stcm (code, s390_r0, 14, dreg, doffset);
315 break;
316
317 case 2 :
318 s390_lh (code, s390_r0, 0, sreg, soffset);
319 s390_sth (code, s390_r0, 0, dreg, doffset);
320 break;
321
322 case 1 :
323 s390_ic (code, s390_r0, 0, sreg, soffset);
324 s390_stc (code, s390_r0, 0, dreg, doffset);
325 break;
326
327 default :
328 while (size > 0) {
329 int len;
330
331 if (size > 256)
332 len = 256;
333 else
334 len = size;
335 s390_mvc (code, len, dreg, doffset, sreg, soffset);
336 size -= len;
337 }
338 }
339 return code;
340 }
341
342 /*========================= End of Function ========================*/
343
344 /*------------------------------------------------------------------*/
345 /* */
346 /* Name - arch_get_argument_info */
347 /* */
348 /* Function - Gathers information on parameters such as size, */
349 /* alignment, and padding. arg_info should be large */
350 /* enough to hold param_count + 1 entries. */
351 /* */
352 /* Parameters - @csig - Method signature */
353 /* @param_count - No. of parameters to consider */
354 /* @arg_info - An array to store the result info */
355 /* */
356 /* Returns - Size of the activation frame */
357 /* */
358 /*------------------------------------------------------------------*/
359
360 int
361 mono_arch_get_argument_info (MonoMethodSignature *csig,
362 int param_count,
363 MonoJitArgumentInfo *arg_info)
364 {
365 int k, frame_size = 0;
366 int size, align, pad;
367 int offset = 8;
368
369 if (MONO_TYPE_ISSTRUCT (csig->ret)) {
370 frame_size += sizeof (gpointer);
371 offset += 4;
372 }
373
374 arg_info [0].offset = offset;
375
376 if (csig->hasthis) {
377 frame_size += sizeof (gpointer);
378 offset += 4;
379 }
380
381 arg_info [0].size = frame_size;
382
383 for (k = 0; k < param_count; k++) {
384
385 if (csig->pinvoke)
386 size = mono_type_native_stack_size (csig->params [k], &align);
387 else
388 size = mono_type_stack_size (csig->params [k], &align);
389
390 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
391 arg_info [k].pad = pad;
392 frame_size += size;
393 arg_info [k + 1].pad = 0;
394 arg_info [k + 1].size = size;
395 offset += pad;
396 arg_info [k + 1].offset = offset;
397 offset += size;
398 }
399
400 align = MONO_ARCH_FRAME_ALIGNMENT;
401 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
402 arg_info [k].pad = pad;
403
404 return frame_size;
405 }
406
407 /*========================= End of Function ========================*/
408
409 /*------------------------------------------------------------------*/
410 /* */
411 /* Name - retFitsInReg. */
412 /* */
413 /* Function - Determines if a value can be returned in one or */
414 /* two registers. */
415 /* */
416 /*------------------------------------------------------------------*/
417
418 static inline gboolean
419 retFitsInReg(guint32 size)
420 {
421 switch (size) {
422 case 0:
423 case 1:
424 case 2:
425 case 4:
426 case 8:
427 return (TRUE);
428 break;
429 default:
430 return (FALSE);
431 }
432 }
433
434 /*========================= End of Function ========================*/
435
436 /*------------------------------------------------------------------*/
437 /* */
438 /* Name - backStackPtr. */
439 /* */
440 /* Function - Restore Stack Pointer to previous frame. */
441 /* */
442 /*------------------------------------------------------------------*/
443
444 static inline guint8 *
445 backUpStackPtr(MonoCompile *cfg, guint8 *code)
446 {
447 int stackSize = cfg->stack_usage;
448
449 if (s390_is_uimm16 (cfg->stack_usage)) {
450 s390_ahi (code, STK_BASE, cfg->stack_usage);
451 } else {
452 while (stackSize > 32767) {
453 s390_ahi (code, STK_BASE, 32767);
454 stackSize -= 32767;
455 }
456 s390_ahi (code, STK_BASE, stackSize);
457 }
458 return (code);
459 }
460
461 /*========================= End of Function ========================*/
462
463 /*------------------------------------------------------------------*/
464 /* */
465 /* Name - indent */
466 /* */
467 /* Function - Perform nice indenting to current level */
468 /* */
469 /*------------------------------------------------------------------*/
470
471 static void
472 indent (int diff) {
473 int v;
474 if (diff < 0)
475 indent_level += diff;
476 v = indent_level;
477 printf("[%3d] ",v);
478 while (v-- > 0) {
479 printf (". ");
480 }
481 if (diff > 0)
482 indent_level += diff;
483 }
484
485 /*========================= End of Function ========================*/
486
487 /*------------------------------------------------------------------*/
488 /* */
489 /* Name - decodeParm */
490 /* */
491 /* Function - Decode a parameter for the trace. */
492 /* */
493 /*------------------------------------------------------------------*/
494
495 static void
496 decodeParm(MonoType *type, void *curParm, int size)
497 {
498 guint32 simpleType;
499
500 if (type->byref) {
501 printf("[BYREF:%p], ", *((char **) curParm));
502 } else {
503 simpleType = mono_type_get_underlying_type(type)->type;
504 enum_parmtype:
505 switch (simpleType) {
506 case MONO_TYPE_I :
507 printf ("[INTPTR:%p], ", *((int **) curParm));
508 break;
509 case MONO_TYPE_U :
510 printf ("[UINTPTR:%p], ", *((int **) curParm));
511 break;
512 case MONO_TYPE_BOOLEAN :
513 printf ("[BOOL:%p], ", *((int *) curParm));
514 break;
515 case MONO_TYPE_CHAR :
516 printf ("[CHAR:%p], ", *((int *) curParm));
517 break;
518 case MONO_TYPE_I1 :
519 printf ("[INT1:%d], ", *((int *) curParm));
520 break;
521 case MONO_TYPE_I2 :
522 printf ("[INT2:%d], ", *((int *) curParm));
523 break;
524 case MONO_TYPE_I4 :
525 printf ("[INT4:%d], ", *((int *) curParm));
526 break;
527 case MONO_TYPE_U1 :
528 printf ("[UINT1:%ud], ", *((unsigned int *) curParm));
529 break;
530 case MONO_TYPE_U2 :
531 printf ("[UINT2:%ud], ", *((guint16 *) curParm));
532 break;
533 case MONO_TYPE_U4 :
534 printf ("[UINT4:%ud], ", *((guint32 *) curParm));
535 break;
536 case MONO_TYPE_U8 :
537 printf ("[UINT8:%ul], ", *((guint64 *) curParm));
538 break;
539 case MONO_TYPE_STRING : {
540 MonoString *s = *((MonoString **) curParm);
541 if (s) {
542 g_assert (((MonoObject *) s)->vtable->klass == mono_defaults.string_class);
543 printf("[STRING:%p:%s], ", s, mono_string_to_utf8(s));
544 } else {
545 printf("[STRING:null], ");
546 }
547 break;
548 }
549 case MONO_TYPE_CLASS :
550 case MONO_TYPE_OBJECT : {
551 MonoObject *obj = *((MonoObject **) curParm);
552 MonoClass *class;
553 if ((obj) && (obj->vtable)) {
554 printf("[CLASS/OBJ:");
555 class = obj->vtable->klass;
556 if (class == mono_defaults.string_class) {
557 printf("[STRING:%p:%s]",
558 *obj, mono_string_to_utf8 (obj));
559 } else if (class == mono_defaults.int32_class) {
560 printf("[INT32:%p:%d]",
561 obj, *(gint32 *)((char *)obj + sizeof (MonoObject)));
562 } else
563 printf("[%s.%s:%p]",
564 class->name_space, class->name, obj);
565 printf("], ");
566 } else {
567 printf("[OBJECT:null], ");
568 }
569 break;
570 }
571 case MONO_TYPE_PTR :
572 printf("[PTR:%p], ", *((gpointer **) (curParm)));
573 break;
574 case MONO_TYPE_FNPTR :
575 printf("[FNPTR:%p], ", *((gpointer **) (curParm)));
576 break;
577 case MONO_TYPE_ARRAY :
578 printf("[ARRAY:%p], ", *((gpointer **) (curParm)));
579 break;
580 case MONO_TYPE_SZARRAY :
581 printf("[SZARRAY:%p], ", *((gpointer **) (curParm)));
582 break;
583 case MONO_TYPE_I8 :
584 printf("[INT8:%lld], ", *((gint64 *) (curParm)));
585 break;
586 case MONO_TYPE_R4 :
587 printf("[FLOAT4:%f], ", *((float *) (curParm)));
588 break;
589 case MONO_TYPE_R8 :
590 printf("[FLOAT8:%g], ", *((double *) (curParm)));
591 break;
592 case MONO_TYPE_VALUETYPE : {
593 int i;
594 if (type->data.klass->enumtype) {
595 simpleType = type->data.klass->enum_basetype->type;
596 printf("{VALUETYPE} - ");
597 goto enum_parmtype;
598 }
599 printf("[VALUETYPE:");
600 for (i = 0; i < size; i++)
601 printf("%02x,", *((guint8 *)curParm+i));
602 printf("]");
603 break;
604 }
605 case MONO_TYPE_TYPEDBYREF: {
606 int i;
607 printf("[TYPEDBYREF:");
608 for (i = 0; i < size; i++)
609 printf("%02x,", *((guint8 *)curParm+i));
610 printf("]");
611 break;
612 }
613 default :
614 printf("[?? - %d], ",simpleType);
615 }
616 }
617 }
618
619 /*========================= End of Function ========================*/
620
621 /*------------------------------------------------------------------*/
622 /* */
623 /* Name - enter_method */
624 /* */
625 /* Function - Perform tracing of the entry to the current */
626 /* method. */
627 /* */
628 /*------------------------------------------------------------------*/
629
630 static void
631 enter_method (MonoMethod *method, RegParm *rParm, char *sp)
632 {
633 int i, oParm = 0, iParm = 0;
634 MonoClass *class;
635 MonoObject *obj;
636 MonoJitArgumentInfo *arg_info;
637 MonoMethodSignature *sig;
638 char *fname;
639 guint32 ip;
640 CallInfo *cinfo;
641 ArgInfo *ainfo;
642 size_data sz;
643 void *curParm;
644
645 fname = mono_method_full_name (method, TRUE);
646 if (strcmp("(wrapper native-to-managed) Tests:call_int_delegate (Tests/return_int_delegate)",fname) == 0)
647 printf("!!\n");
648 indent (1);
649 printf ("ENTER: %s(", fname);
650 g_free (fname);
651
652 ip = (*(guint32 *) (sp+S390_RET_ADDR_OFFSET)) & 0x7fffffff;
653 printf (") ip: %p sp: %p - ", ip, sp);
654
655 if (rParm == NULL)
656 return;
657
658 sig = method->signature;
659
660 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
661
662 if (cinfo->struct_ret) {
663 printf ("[VALUERET:%p], ", rParm->gr[0]);
664 iParm = 1;
665 }
666
667 if (sig->hasthis) {
668 gpointer *this = (gpointer *) rParm->gr[iParm];
669 obj = (MonoObject *) this;
670 if (method->klass->valuetype) {
671 if (obj) {
672 printf("this:[value:%p:%08x], ",
673 this, *((guint32 *)(this+sizeof(MonoObject))));
674 } else
675 printf ("this:[NULL], ");
676 } else {
677 if (obj) {
678 class = obj->vtable->klass;
679 if (class == mono_defaults.string_class) {
680 printf ("this:[STRING:%p:%s], ",
681 obj, mono_string_to_utf8 ((MonoString *)obj));
682 } else {
683 printf ("this:%p[%s.%s], ",
684 obj, class->name_space, class->name);
685 }
686 } else
687 printf ("this:NULL, ");
688 }
689 oParm++;
690 }
691
692 for (i = 0; i < sig->param_count; ++i) {
693 ainfo = cinfo->args + (i + oParm);
694 switch (ainfo->regtype) {
695 case RegTypeGeneral :
696 decodeParm(sig->params[i], &(rParm->gr[ainfo->reg-2]), ainfo->size);
697 break;
698 case RegTypeFP :
699 decodeParm(sig->params[i], &(rParm->fp[ainfo->reg]), ainfo->size);
700 break;
701 case RegTypeBase :
702 decodeParm(sig->params[i], sp+ainfo->offset, ainfo->size);
703 break;
704 case RegTypeStructByVal :
705 if (ainfo->reg != STK_BASE)
706 curParm = &(rParm->gr[ainfo->reg-2]);
707 else
708 curParm = sp+ainfo->offset;
709
710 if (retFitsInReg (ainfo->vtsize))
711 decodeParm(sig->params[i],
712 curParm,
713 ainfo->size);
714 else
715 decodeParm(sig->params[i],
716 *((char **) curParm),
717 ainfo->vtsize);
718 break;
719 case RegTypeStructByAddr :
720 if (ainfo->reg != STK_BASE)
721 curParm = &(rParm->gr[ainfo->reg-2]);
722 else
723 curParm = sp+ainfo->offset;
724
725 decodeParm(sig->params[i],
726 *((char **) curParm),
727 ainfo->vtsize);
728 break;
729
730 default :
731 printf("???, ");
732 }
733 }
734 printf("\n");
735 g_free(cinfo);
736 }
737
738 /*========================= End of Function ========================*/
739
740 /*------------------------------------------------------------------*/
741 /* */
742 /* Name - leave_method */
743 /* */
744 /* Function - */
745 /* */
746 /*------------------------------------------------------------------*/
747
748 static void
749 leave_method (MonoMethod *method, ...)
750 {
751 MonoType *type;
752 char *fname;
753 guint32 ip;
754 va_list ap;
755
756 va_start(ap, method);
757
758 fname = mono_method_full_name (method, TRUE);
759 indent (-1);
760 printf ("LEAVE: %s", fname);
761 g_free (fname);
762
763 type = method->signature->ret;
764
765 handle_enum:
766 switch (type->type) {
767 case MONO_TYPE_VOID:
768 break;
769 case MONO_TYPE_BOOLEAN: {
770 int val = va_arg (ap, int);
771 if (val)
772 printf ("[TRUE:%d]", val);
773 else
774 printf ("[FALSE]");
775
776 break;
777 }
778 case MONO_TYPE_CHAR: {
779 int val = va_arg (ap, int);
780 printf ("[CHAR:%d]", val);
781 break;
782 }
783 case MONO_TYPE_I1: {
784 int val = va_arg (ap, int);
785 printf ("[INT1:%d]", val);
786 break;
787 }
788 case MONO_TYPE_U1: {
789 int val = va_arg (ap, int);
790 printf ("[UINT1:%d]", val);
791 break;
792 }
793 case MONO_TYPE_I2: {
794 int val = va_arg (ap, int);
795 printf ("[INT2:%d]", val);
796 break;
797 }
798 case MONO_TYPE_U2: {
799 int val = va_arg (ap, int);
800 printf ("[UINT2:%d]", val);
801 break;
802 }
803 case MONO_TYPE_I4: {
804 int val = va_arg (ap, int);
805 printf ("[INT4:%d]", val);
806 break;
807 }
808 case MONO_TYPE_U4: {
809 int val = va_arg (ap, int);
810 printf ("[UINT4:%d]", val);
811 break;
812 }
813 case MONO_TYPE_I: {
814 int *val = va_arg (ap, int*);
815 printf ("[INT:%d]", val);
816 printf("]");
817 break;
818 }
819 case MONO_TYPE_U: {
820 int *val = va_arg (ap, int*);
821 printf ("[UINT:%d]", val);
822 printf("]");
823 break;
824 }
825 case MONO_TYPE_STRING: {
826 MonoString *s = va_arg (ap, MonoString *);
827 ;
828 if (s) {
829 g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
830 printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
831 } else
832 printf ("[STRING:null], ");
833 break;
834 }
835 case MONO_TYPE_CLASS:
836 case MONO_TYPE_OBJECT: {
837 MonoObject *o = va_arg (ap, MonoObject *);
838
839 if ((o) && (o->vtable)) {
840 if (o->vtable->klass == mono_defaults.boolean_class) {
841 printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
842 } else if (o->vtable->klass == mono_defaults.int32_class) {
843 printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
844 } else if (o->vtable->klass == mono_defaults.int64_class) {
845 printf ("[INT64:%p:%lld]", o, *((gint64 *)((char *)o + sizeof (MonoObject))));
846 } else
847 printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
848 } else
849 printf ("[OBJECT:%p]", o);
850
851 break;
852 }
853 case MONO_TYPE_PTR:
854 case MONO_TYPE_FNPTR:
855 case MONO_TYPE_ARRAY:
856 case MONO_TYPE_SZARRAY: {
857 gpointer p = va_arg (ap, gpointer);
858 printf ("[result=%p]", p);
859 break;
860 }
861 case MONO_TYPE_I8: {
862 gint64 l = va_arg (ap, gint64);
863 printf ("[LONG:%lld]", l);
864 break;
865 }
866 case MONO_TYPE_R4: {
867 double f = va_arg (ap, double);
868 printf ("[FLOAT4:%f]\n", (float) f);
869 break;
870 }
871 case MONO_TYPE_R8: {
872 double f = va_arg (ap, double);
873 printf ("[FLOAT8:%g]\n", f);
874 break;
875 }
876 case MONO_TYPE_VALUETYPE:
877 if (type->data.klass->enumtype) {
878 type = type->data.klass->enum_basetype;
879 goto handle_enum;
880 } else {
881 guint8 *p = va_arg (ap, gpointer);
882 int j, size, align;
883 size = mono_type_size (type, &align);
884 printf ("[");
885 for (j = 0; p && j < size; j++)
886 printf ("%02x,", p [j]);
887 printf ("]");
888 }
889 break;
890 case MONO_TYPE_TYPEDBYREF: {
891 guint8 *p = va_arg (ap, gpointer);
892 int j, size, align;
893 size = mono_type_size (type, &align);
894 printf ("[");
895 for (j = 0; p && j < size; j++)
896 printf ("%02x,", p [j]);
897 printf ("]");
898 }
899 break;
900 default:
901 printf ("(unknown return type %x)",
902 method->signature->ret->type);
903 }
904
905 ip = ((gint32) __builtin_return_address (0)) & 0x7fffffff;
906 printf (" ip: %p\n", ip);
907 }
908
909 /*========================= End of Function ========================*/
910
911 /*------------------------------------------------------------------*/
912 /* */
913 /* Name - mono_arch_cpu_init */
914 /* */
915 /* Function - Perform CPU specific initialization to execute */
916 /* managed code. */
917 /* */
918 /*------------------------------------------------------------------*/
919
920 void
921 mono_arch_cpu_init (void)
922 {
923 guint mode = 1;
924
925 /*--------------------------------------*/
926 /* Set default rounding mode for FP */
927 /*--------------------------------------*/
928 __asm__ ("SRNM\t%0\n\t"
929 : : "m" (mode));
930 }
931
932 /*========================= End of Function ========================*/
933
934 /*------------------------------------------------------------------*/
935 /* */
936 /* Name - mono_arch_cpu_optimizazions */
937 /* */
938 /* Function - Returns the optimizations supported on this CPU */
939 /* */
940 /*------------------------------------------------------------------*/
941
942 guint32
943 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
944 {
945 guint32 opts = 0;
946
947 /*----------------------------------------------------------*/
948 /* no s390-specific optimizations yet */
949 /*----------------------------------------------------------*/
950 *exclude_mask = MONO_OPT_INLINE|MONO_OPT_LINEARS;
951 // *exclude_mask = MONO_OPT_INLINE;
952 return opts;
953 }
954
955 /*========================= End of Function ========================*/
956
957 /*------------------------------------------------------------------*/
958 /* */
959 /* Name - */
960 /* */
961 /* Function - */
962 /* */
963 /*------------------------------------------------------------------*/
964
965 static gboolean
966 is_regsize_var (MonoType *t) {
967 if (t->byref)
968 return TRUE;
969 switch (mono_type_get_underlying_type (t)->type) {
970 case MONO_TYPE_I4:
971 case MONO_TYPE_U4:
972 case MONO_TYPE_I:
973 case MONO_TYPE_U:
974 return TRUE;
975 case MONO_TYPE_OBJECT:
976 case MONO_TYPE_STRING:
977 case MONO_TYPE_CLASS:
978 case MONO_TYPE_SZARRAY:
979 case MONO_TYPE_ARRAY:
980 return FALSE;
981 case MONO_TYPE_VALUETYPE:
982 if (t->data.klass->enumtype)
983 return is_regsize_var (t->data.klass->enum_basetype);
984 return FALSE;
985 }
986 return FALSE;
987 }
988
989 /*========================= End of Function ========================*/
990
991 /*------------------------------------------------------------------*/
992 /* */
993 /* Name - mono_arch_get_allocatable_int_vars */
994 /* */
995 /* Function - */
996 /* */
997 /*------------------------------------------------------------------*/
998
999 GList *
1000 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
1001 {
1002 GList *vars = NULL;
1003 int i;
1004
1005 for (i = 0; i < cfg->num_varinfo; i++) {
1006 MonoInst *ins = cfg->varinfo [i];
1007 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
1008
1009 /* unused vars */
1010 if (vmv->range.first_use.abs_pos > vmv->range.last_use.abs_pos)
1011 continue;
1012
1013 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT) || (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
1014 continue;
1015
1016 /* we can only allocate 32 bit values */
1017 if (is_regsize_var (ins->inst_vtype)) {
1018 g_assert (MONO_VARINFO (cfg, i)->reg == -1);
1019 g_assert (i == vmv->idx);
1020 vars = mono_varlist_insert_sorted (cfg, vars, vmv, FALSE);
1021 }
1022 }
1023
1024 return vars;
1025 }
1026
1027 /*========================= End of Function ========================*/
1028
1029 /*------------------------------------------------------------------*/
1030 /* */
1031 /* Name - mono_arch_global_int_regs */
1032 /* */
1033 /* Function - Return a list of usable integer registers. */
1034 /* */
1035 /*------------------------------------------------------------------*/
1036
1037 GList *
1038 mono_arch_get_global_int_regs (MonoCompile *cfg)
1039 {
1040 GList *regs = NULL;
1041 int i, top = 13;
1042
1043 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
1044 cfg->frame_reg = s390_r11;
1045
1046 for (i = 8; i < top; ++i) {
1047 if (cfg->frame_reg != i)
1048 regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
1049 }
1050
1051 return regs;
1052 }
1053
1054 /*========================= End of Function ========================*/
1055
1056 /*------------------------------------------------------------------*/
1057 /* */
1058 /* Name - mono_arch_flush_icache */
1059 /* */
1060 /* Function - Flush the CPU icache. */
1061 /* */
1062 /*------------------------------------------------------------------*/
1063
1064 void
1065 mono_arch_flush_icache (guint8 *code, gint size)
1066 {
1067 }
1068
1069 /*========================= End of Function ========================*/
1070
1071 /*------------------------------------------------------------------*/
1072 /* */
1073 /* Name - add_general */
1074 /* */
1075 /* Function - Determine code and stack size incremements for a */
1076 /* parameter. */
1077 /* */
1078 /*------------------------------------------------------------------*/
1079
1080 static void inline
1081 add_general (guint *gr, size_data *sz, ArgInfo *ainfo, gboolean simple)
1082 {
1083 if (simple) {
1084 if (*gr > S390_LAST_ARG_REG) {
1085 sz->stack_size = S390_ALIGN(sz->stack_size, sizeof(long));
1086 ainfo->offset = sz->stack_size;
1087 ainfo->reg = STK_BASE;
1088 ainfo->regtype = RegTypeBase;
1089 sz->stack_size += sizeof(int);
1090 sz->code_size += 12;
1091 } else {
1092 ainfo->reg = *gr;
1093 sz->code_size += 8;
1094 }
1095 } else {
1096 if (*gr > S390_LAST_ARG_REG - 1) {
1097 sz->stack_size = S390_ALIGN(sz->stack_size, S390_STACK_ALIGNMENT);
1098 ainfo->offset = sz->stack_size;
1099 ainfo->reg = STK_BASE;
1100 ainfo->regtype = RegTypeBase;
1101 sz->stack_size += sizeof(long long);
1102 sz->code_size += 10;
1103 } else {
1104 ainfo->reg = *gr;
1105 sz->code_size += 8;
1106 }
1107 (*gr) ++;
1108 }
1109 (*gr) ++;
1110 }
1111
1112 /*========================= End of Function ========================*/
1113
1114 /*------------------------------------------------------------------*/
1115 /* */
1116 /* Name - calculate_sizes */
1117 /* */
1118 /* Function - Determine the amount of space required for code */
1119 /* and stack. In addition determine starting points */
1120 /* for stack-based parameters, and area for struct- */
1121 /* ures being returned on the stack. */
1122 /* */
1123 /*------------------------------------------------------------------*/
1124
1125 static CallInfo *
1126 calculate_sizes (MonoMethodSignature *sig, size_data *sz,
1127 gboolean string_ctor)
1128 {
1129 guint i, fr, gr, size, nWords;
1130 int nParm = sig->hasthis + sig->param_count;
1131 guint32 simpletype, align;
1132 CallInfo *cinfo = g_malloc0 (sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1133
1134 fr = 0;
1135 gr = s390_r2;
1136 nParm = 0;
1137 cinfo->struct_ret = 0;
1138 sz->retStruct = 0;
1139 sz->stack_size = S390_MINIMAL_STACK_SIZE;
1140 sz->code_size = 0;
1141 sz->local_size = 0;
1142
1143 /*----------------------------------------------------------*/
1144 /* We determine the size of the return code/stack in case we*/
1145 /* need to reserve a register to be used to address a stack */
1146 /* area that the callee will use. */
1147 /*----------------------------------------------------------*/
1148
1149 simpletype = mono_type_get_underlying_type (sig->ret)->type;
1150 enum_retvalue:
1151 switch (simpletype) {
1152 case MONO_TYPE_BOOLEAN:
1153 case MONO_TYPE_I1:
1154 case MONO_TYPE_U1:
1155 case MONO_TYPE_I2:
1156 case MONO_TYPE_U2:
1157 case MONO_TYPE_CHAR:
1158 case MONO_TYPE_I4:
1159 case MONO_TYPE_U4:
1160 case MONO_TYPE_I:
1161 case MONO_TYPE_U:
1162 case MONO_TYPE_CLASS:
1163 case MONO_TYPE_OBJECT:
1164 case MONO_TYPE_SZARRAY:
1165 case MONO_TYPE_ARRAY:
1166 case MONO_TYPE_PTR:
1167 case MONO_TYPE_STRING:
1168 cinfo->ret.reg = s390_r2;
1169 sz->code_size += 4;
1170 break;
1171 case MONO_TYPE_R4:
1172 case MONO_TYPE_R8:
1173 cinfo->ret.reg = s390_f0;
1174 sz->code_size += 4;
1175 break;
1176 case MONO_TYPE_I8:
1177 case MONO_TYPE_U8:
1178 cinfo->ret.reg = s390_r2;
1179 sz->code_size += 4;
1180 break;
1181 case MONO_TYPE_VALUETYPE: {
1182 MonoClass *klass = mono_class_from_mono_type (sig->ret);
1183 if (sig->ret->data.klass->enumtype) {
1184 simpletype = sig->ret->data.klass->enum_basetype->type;
1185 goto enum_retvalue;
1186 }
1187 if (sig->pinvoke)
1188 size = mono_class_native_size (klass, &align);
1189 else
1190 size = mono_class_value_size (klass, &align);
1191 cinfo->ret.reg = s390_r2;
1192 cinfo->struct_ret = 1;
1193 cinfo->ret.size = size;
1194 cinfo->ret.vtsize = size;
1195 cinfo->ret.offset = sz->stack_size;
1196 sz->stack_size += S390_ALIGN(size, align);
1197 gr++;
1198 break;
1199 }
1200 case MONO_TYPE_TYPEDBYREF:
1201 size = sizeof (MonoTypedRef);
1202 cinfo->ret.reg = s390_r2;
1203 cinfo->struct_ret = 1;
1204 cinfo->ret.size = size;
1205 cinfo->ret.vtsize = size;
1206 cinfo->ret.offset = sz->stack_size;
1207 sz->stack_size += S390_ALIGN(size, align);
1208 gr++;
1209 break;
1210 case MONO_TYPE_VOID:
1211 break;
1212 default:
1213 g_error ("Can't handle as return value 0x%x", sig->ret->type);
1214 }
1215
1216 if (sig->hasthis) {
1217 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1218 cinfo->args[nParm].size = sizeof(gpointer);
1219 nParm++;
1220 }
1221
1222 /*----------------------------------------------------------*/
1223 /* We determine the size of the parameter code and stack */
1224 /* requirements by checking the types and sizes of the */
1225 /* parameters. */
1226 /*----------------------------------------------------------*/
1227
1228 for (i = 0; i < sig->param_count; ++i) {
1229 /*--------------------------------------------------*/
1230 /* Handle vararg type calls. All args are put on */
1231 /* the stack. */
1232 /*--------------------------------------------------*/
1233 if ((sig->call_convention == MONO_CALL_VARARG) &&
1234 (i == sig->sentinelpos)) {
1235 gr = S390_LAST_ARG_REG + 1;
1236 add_general (&gr, sz, &cinfo->sigCookie, TRUE);
1237 }
1238
1239 if (sig->params [i]->byref) {
1240 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1241 cinfo->args[nParm].size = sizeof(gpointer);
1242 nParm++;
1243 continue;
1244 }
1245 simpletype = mono_type_get_underlying_type(sig->params [i])->type;
1246 enum_calc_size:
1247 switch (simpletype) {
1248 case MONO_TYPE_BOOLEAN:
1249 case MONO_TYPE_I1:
1250 case MONO_TYPE_U1:
1251 cinfo->args[nParm].size = sizeof(char);
1252 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1253 nParm++;
1254 break;
1255 case MONO_TYPE_I2:
1256 case MONO_TYPE_U2:
1257 case MONO_TYPE_CHAR:
1258 cinfo->args[nParm].size = sizeof(short);
1259 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1260 nParm++;
1261 break;
1262 case MONO_TYPE_I4:
1263 case MONO_TYPE_U4:
1264 cinfo->args[nParm].size = sizeof(int);
1265 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1266 nParm++;
1267 break;
1268 case MONO_TYPE_I:
1269 case MONO_TYPE_U:
1270 case MONO_TYPE_PTR:
1271 case MONO_TYPE_CLASS:
1272 case MONO_TYPE_OBJECT:
1273 case MONO_TYPE_STRING:
1274 case MONO_TYPE_SZARRAY:
1275 case MONO_TYPE_ARRAY:
1276 cinfo->args[nParm].size = sizeof(gpointer);
1277 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1278 nParm++;
1279 break;
1280 case MONO_TYPE_VALUETYPE: {
1281 MonoClass *klass = mono_class_from_mono_type (sig->params [i]);
1282 if (sig->pinvoke)
1283 size = mono_class_native_size (klass, &align);
1284 else
1285 size = mono_class_value_size (klass, &align);
1286 nWords = (size + sizeof(gpointer) - 1) /
1287 sizeof(gpointer);
1288
1289 cinfo->args[nParm].vtsize = 0;
1290 cinfo->args[nParm].size = 0;
1291 cinfo->args[nParm].offparm = sz->local_size;
1292
1293 switch (size) {
1294 /*----------------------------------*/
1295 /* On S/390, structures of size 1, */
1296 /* 2, 4, and 8 bytes are passed in */
1297 /* (a) register(s). */
1298 /*----------------------------------*/
1299 case 0:
1300 case 1:
1301 case 2:
1302 case 4:
1303 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1304 cinfo->args[nParm].size = size;
1305 cinfo->args[nParm].regtype = RegTypeStructByVal;
1306 nParm++;
1307 sz->local_size += sizeof(long);
1308 break;
1309 case 8:
1310 add_general(&gr, sz, cinfo->args+nParm, FALSE);
1311 cinfo->args[nParm].size = sizeof(long long);
1312 cinfo->args[nParm].regtype = RegTypeStructByVal;
1313 nParm++;
1314 sz->local_size += sizeof(long);
1315 break;
1316 default:
1317 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1318 cinfo->args[nParm].size = sizeof(int);
1319 cinfo->args[nParm].regtype = RegTypeStructByAddr;
1320 cinfo->args[nParm].vtsize = size;
1321 sz->code_size += 40;
1322 sz->local_size += size;
1323 if (cinfo->args[nParm].reg == STK_BASE)
1324 sz->local_size += sizeof(gpointer);
1325 nParm++;
1326 }
1327 }
1328 break;
1329 case MONO_TYPE_TYPEDBYREF: {
1330 int size = sizeof (MonoTypedRef);
1331
1332 nWords = (size + sizeof(gpointer) - 1) /
1333 sizeof(gpointer);
1334
1335 cinfo->args[nParm].vtsize = 0;
1336 cinfo->args[nParm].size = 0;
1337 cinfo->args[nParm].offparm = sz->local_size;
1338
1339 switch (size) {
1340 /*----------------------------------*/
1341 /* On S/390, structures of size 1, */
1342 /* 2, 4, and 8 bytes are passed in */
1343 /* (a) register(s). */
1344 /*----------------------------------*/
1345 case 0:
1346 case 1:
1347 case 2:
1348 case 4:
1349 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1350 cinfo->args[nParm].size = size;
1351 cinfo->args[nParm].regtype = RegTypeStructByVal;
1352 nParm++;
1353 sz->local_size += sizeof(long);
1354 break;
1355 case 8:
1356 add_general(&gr, sz, cinfo->args+nParm, FALSE);
1357 cinfo->args[nParm].size = sizeof(long long);
1358 cinfo->args[nParm].regtype = RegTypeStructByVal;
1359 nParm++;
1360 sz->local_size += sizeof(long);
1361 break;
1362 default:
1363 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1364 cinfo->args[nParm].size = sizeof(int);
1365 cinfo->args[nParm].regtype = RegTypeStructByAddr;
1366 cinfo->args[nParm].vtsize = size;
1367 sz->code_size += 40;
1368 sz->local_size += size;
1369 if (cinfo->args[nParm].reg == STK_BASE)
1370 sz->local_size += sizeof(gpointer);
1371 nParm++;
1372 }
1373 }
1374 break;
1375 case MONO_TYPE_I8:
1376 case MONO_TYPE_U8:
1377 cinfo->args[nParm].size = sizeof(long long);
1378 add_general (&gr, sz, cinfo->args+nParm, FALSE);
1379 nParm++;
1380 break;
1381 case MONO_TYPE_R4:
1382 cinfo->args[nParm].size = sizeof(float);
1383 if (fr <= S390_LAST_FPARG_REG) {
1384 cinfo->args[nParm].regtype = RegTypeFP;
1385 cinfo->args[nParm].reg = fr;
1386 sz->code_size += 4;
1387 fr += 2;
1388 }
1389 else {
1390 cinfo->args[nParm].offset = sz->stack_size;
1391 cinfo->args[nParm].reg = STK_BASE;
1392 cinfo->args[nParm].regtype = RegTypeBase;
1393 sz->code_size += 4;
1394 sz->stack_size += sizeof(float);
1395 }
1396 nParm++;
1397 break;
1398 case MONO_TYPE_R8:
1399 cinfo->args[nParm].size = sizeof(double);
1400 if (fr <= S390_LAST_FPARG_REG) {
1401 cinfo->args[nParm].regtype = RegTypeFP;
1402 cinfo->args[nParm].reg = fr;
1403 sz->code_size += 4;
1404 fr += 2;
1405 } else {
1406 cinfo->args[nParm].offset = sz->stack_size;
1407 cinfo->args[nParm].reg = STK_BASE;
1408 cinfo->args[nParm].regtype = RegTypeBase;
1409 sz->code_size += 4;
1410 sz->stack_size += sizeof(double);
1411 }
1412 nParm++;
1413 break;
1414 default:
1415 g_error ("Can't trampoline 0x%x", sig->params [i]->type);
1416 }
1417 }
1418
1419 cinfo->stack_usage = S390_ALIGN(sz->stack_size+sz->local_size,
1420 S390_STACK_ALIGNMENT);
1421 return (cinfo);
1422 }
1423
1424 /*========================= End of Function ========================*/
1425
1426 /*------------------------------------------------------------------*/
1427 /* */
1428 /* Name - mono_arch_allocate_vars */
1429 /* */
1430 /* Function - Set var information according to the calling */
1431 /* convention for S/390. The local var stuff should */
1432 /* most likely be split in another method. */
1433 /* */
1434 /* Parameter - @m - Compile unit. */
1435 /* */
1436 /*------------------------------------------------------------------*/
1437
1438 void
1439 mono_arch_allocate_vars (MonoCompile *cfg)
1440 {
1441 MonoMethodSignature *sig;
1442 MonoMethodHeader *header;
1443 MonoInst *inst;
1444 CallInfo *cinfo;
1445 size_data sz;
1446 int iParm, iVar, offset, size, align, curinst;
1447 int frame_reg = STK_BASE;
1448 int sArg, eArg;
1449
1450 header = mono_method_get_header (cfg->method);
1451
1452 /*---------------------------------------------------------*/
1453 /* We use the frame register also for any method that has */
1454 /* filter clauses. This way, when the handlers are called, */
1455 /* the code will reference local variables using the frame */
1456 /* reg instead of the stack pointer: if we had to restore */
1457 /* the stack pointer, we'd corrupt the method frames that */
1458 /* are already on the stack (since filters get called */
1459 /* before stack unwinding happens) when the filter code */
1460 /* would call any method. */
1461 /*---------------------------------------------------------*/
1462 if ((cfg->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1463 frame_reg = s390_r11;
1464
1465 cfg->frame_reg = frame_reg;
1466
1467 if (frame_reg != STK_BASE)
1468 cfg->used_int_regs |= 1 << frame_reg;
1469
1470 sig = cfg->method->signature;
1471
1472 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1473
1474 if (cinfo->struct_ret) {
1475 cfg->ret->opcode = OP_REGVAR;
1476 cfg->ret->inst_c0 = s390_r2;
1477 } else {
1478 switch (mono_type_get_underlying_type (sig->ret)->type) {
1479 case MONO_TYPE_VOID:
1480 break;
1481 default:
1482 cfg->ret->opcode = OP_REGVAR;
1483 cfg->ret->dreg = s390_r2;
1484 break;
1485 }
1486 }
1487
1488 /*--------------------------------------------------------------*/
1489 /* local vars are at a positive offset from the stack pointer */
1490 /* also note that if the function uses alloca, we use s390_r11 */
1491 /* to point at the local variables. */
1492 /* add parameter area size for called functions */
1493 /*--------------------------------------------------------------*/
1494 offset = (cfg->param_area + S390_MINIMAL_STACK_SIZE);
1495 cfg->sig_cookie = 0;
1496
1497 if (cinfo->struct_ret) {
1498 inst = cfg->ret;
1499 offset = S390_ALIGN(offset, sizeof(gpointer));
1500 inst->inst_offset = offset;
1501 inst->opcode = OP_REGOFFSET;
1502 inst->inst_basereg = frame_reg;
1503 offset += sizeof(gpointer);
1504 if ((sig->call_convention == MONO_CALL_VARARG) &&
1505 (!retFitsInReg (cinfo->ret.size)))
1506 cfg->sig_cookie += cinfo->ret.size;
1507 }
1508
1509 if (sig->hasthis) {
1510 inst = cfg->varinfo [0];
1511 if (inst->opcode != OP_REGVAR) {
1512 inst->opcode = OP_REGOFFSET;
1513 inst->inst_basereg = frame_reg;
1514 offset = S390_ALIGN(offset, sizeof(gpointer));
1515 inst->inst_offset = offset;
1516 offset += sizeof (gpointer);
1517 }
1518 curinst = sArg = 1;
1519 } else {
1520 curinst = sArg = 0;
1521 }
1522
1523 eArg = sig->param_count + sArg;
1524
1525 if (sig->call_convention == MONO_CALL_VARARG)
1526 cfg->sig_cookie += S390_MINIMAL_STACK_SIZE;
1527
1528 for (iParm = sArg; iParm < eArg; ++iParm) {
1529 inst = cfg->varinfo [curinst];
1530 if (inst->opcode != OP_REGVAR) {
1531 switch (cinfo->args[iParm].regtype) {
1532 case RegTypeStructByAddr :
1533 inst->opcode = OP_S390_LOADARG;
1534 inst->inst_basereg = frame_reg;
1535 size = abs(cinfo->args[iParm].vtsize);
1536 offset = S390_ALIGN(offset, size);
1537 inst->inst_offset = offset;
1538 break;
1539 case RegTypeStructByVal :
1540 inst->opcode = OP_S390_ARGPTR;
1541 inst->inst_basereg = frame_reg;
1542 size = cinfo->args[iParm].size;
1543 offset = S390_ALIGN(offset, size);
1544 inst->inst_offset = offset;
1545 break;
1546 default :
1547 if (cinfo->args[iParm].reg != STK_BASE) {
1548 inst->opcode = OP_REGOFFSET;
1549 inst->inst_basereg = frame_reg;
1550 size = (cinfo->args[iParm].size < 8
1551 ? sizeof(long)
1552 : sizeof(long long));
1553 offset = S390_ALIGN(offset, size);
1554 inst->inst_offset = offset;
1555 } else {
1556 inst->opcode = OP_S390_STKARG;
1557 inst->inst_basereg = frame_reg;
1558 size = (cinfo->args[iParm].size < 4
1559 ? 4 - cinfo->args[iParm].size
1560 : 0);
1561 inst->inst_offset = cinfo->args[iParm].offset +
1562 size;
1563 inst->unused = 0;
1564 size = sizeof(long);
1565 }
1566 }
1567 if ((sig->call_convention == MONO_CALL_VARARG) &&
1568 (cinfo->args[iParm].regtype != RegTypeGeneral) &&
1569 (iParm < sig->sentinelpos))
1570 cfg->sig_cookie += size;
1571
1572 offset += size;
1573 }
1574 curinst++;
1575 }
1576
1577 curinst = cfg->locals_start;
1578 for (iVar = curinst; iVar < cfg->num_varinfo; ++iVar) {
1579 inst = cfg->varinfo [iVar];
1580 if ((inst->flags & MONO_INST_IS_DEAD) ||
1581 (inst->opcode == OP_REGVAR))
1582 continue;
1583
1584 /*--------------------------------------------------*/
1585 /* inst->unused indicates native sized value types, */
1586 /* this is used by the pinvoke wrappers when they */
1587 /* call functions returning structure */
1588 /*--------------------------------------------------*/
1589 if (inst->unused && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1590 size = mono_class_native_size (mono_class_from_mono_type(inst->inst_vtype), &align);
1591 else
1592 size = mono_type_size (inst->inst_vtype, &align);
1593
1594 offset = S390_ALIGN(offset, align);
1595 inst->inst_offset = offset;
1596 inst->opcode = OP_REGOFFSET;
1597 inst->inst_basereg = frame_reg;
1598 offset += size;
1599 DEBUG (g_print("allocating local %d to %d\n", iVar, inst->inst_offset));
1600 }
1601
1602 /*------------------------------------------------------*/
1603 /* Allow space for the trace method stack area if needed*/
1604 /*------------------------------------------------------*/
1605 if (mono_jit_trace_calls != NULL && mono_trace_eval (cfg))
1606 offset += S390_TRACE_STACK_SIZE;
1607
1608 /*------------------------------------------------------*/
1609 /* Reserve space to save LMF and caller saved registers */
1610 /*------------------------------------------------------*/
1611 if (cfg->method->save_lmf)
1612 offset += sizeof (MonoLMF);
1613
1614 /*------------------------------------------------------*/
1615 /* align the offset */
1616 /*------------------------------------------------------*/
1617 cfg->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1618
1619 }
1620
1621 /*========================= End of Function ========================*/
1622
1623 /*------------------------------------------------------------------*/
1624 /* */
1625 /* Name - mono_arch_call_opcode */
1626 /* */
1627 /* Function - Take the arguments and generate the arch-specific */
1628 /* instructions to properly call the function. This */
1629 /* includes pushing, moving argments to the correct */
1630 /* etc. */
1631 /* */
1632 /* Note - FIXME: We need an alignment solution for */
1633 /* enter_method and mono_arch_call_opcode, currently */
1634 /* alignment in mono_arch_call_opcode is computed */
1635 /* without arch_get_argument_info. */
1636 /* */
1637 /*------------------------------------------------------------------*/
1638
1639 MonoCallInst*
1640 mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb,
1641 MonoCallInst *call, int is_virtual) {
1642 MonoInst *arg, *in;
1643 MonoMethodSignature *sig;
1644 int i, n, lParamArea;
1645 CallInfo *cinfo;
1646 ArgInfo *ainfo;
1647 size_data sz;
1648
1649 sig = call->signature;
1650 n = sig->param_count + sig->hasthis;
1651 DEBUG (g_print ("Call requires: %d parameters\n",n));
1652
1653 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1654
1655 call->stack_usage = cinfo->stack_usage;
1656 lParamArea = MAX((cinfo->stack_usage - S390_MINIMAL_STACK_SIZE), 0);
1657 cfg->param_area = MAX (((signed) cfg->param_area), lParamArea);
1658 cfg->flags |= MONO_CFG_HAS_CALLS;
1659
1660 if (cinfo->struct_ret)
1661 call->used_iregs |= 1 << cinfo->ret.reg;
1662
1663 for (i = 0; i < n; ++i) {
1664 ainfo = cinfo->args + i;
1665
1666 if ((sig->call_convention == MONO_CALL_VARARG) &&
1667 (i == sig->sentinelpos)) {
1668 MonoInst *sigArg;
1669
1670 cfg->disable_aot = TRUE;
1671 MONO_INST_NEW (cfg, sigArg, OP_ICONST);
1672 sigArg->inst_p0 = call->signature;
1673
1674 MONO_INST_NEW (cfg, arg, OP_OUTARG);
1675 arg->inst_imm = cinfo->sigCookie.offset;
1676 arg->inst_left = sigArg;
1677
1678 arg->next = call->out_args;
1679 call->out_args = arg;
1680 }
1681
1682 if (is_virtual && i == 0) {
1683 /* the argument will be attached to the call instrucion */
1684 in = call->args [i];
1685 call->used_iregs |= 1 << ainfo->reg;
1686 } else {
1687 MONO_INST_NEW (cfg, arg, OP_OUTARG);
1688 in = call->args [i];
1689 arg->cil_code = in->cil_code;
1690 arg->inst_left = in;
1691 arg->type = in->type;
1692 /* prepend, we'll need to reverse them later */
1693 arg->next = call->out_args;
1694 call->out_args = arg;
1695 if (ainfo->regtype == RegTypeGeneral) {
1696 arg->unused = ainfo->reg;
1697 call->used_iregs |= 1 << ainfo->reg;
1698 if (arg->type == STACK_I8)
1699 call->used_iregs |= 1 << (ainfo->reg + 1);
1700 } else if (ainfo->regtype == RegTypeStructByAddr) {
1701 call->used_iregs |= 1 << ainfo->reg;
1702 arg->sreg1 = ainfo->reg;
1703 arg->opcode = OP_OUTARG_VT;
1704 arg->unused = -ainfo->vtsize;
1705 arg->inst_imm = ainfo->offset;
1706 arg->sreg2 = ainfo->offparm + S390_MINIMAL_STACK_SIZE;
1707 } else if (ainfo->regtype == RegTypeStructByVal) {
1708 if (ainfo->reg != STK_BASE) {
1709 switch (ainfo->size) {
1710 case 0:
1711 case 1:
1712 case 2:
1713 case 4:
1714 call->used_iregs |= 1 << ainfo->reg;
1715 break;
1716 case 8:
1717 call->used_iregs |= 1 << ainfo->reg;
1718 call->used_iregs |= 1 << (ainfo->reg+1);
1719 break;
1720 default:
1721 call->used_iregs |= 1 << ainfo->reg;
1722 }
1723 }
1724 arg->sreg1 = ainfo->reg;
1725 arg->opcode = OP_OUTARG_VT;
1726 arg->unused = ainfo->size;
1727 arg->inst_imm = ainfo->offset;
1728 arg->sreg2 = ainfo->offparm + S390_MINIMAL_STACK_SIZE;
1729 } else if (ainfo->regtype == RegTypeBase) {
1730 arg->opcode = OP_OUTARG;
1731 arg->unused = ainfo->reg | (ainfo->size << 8);
1732 arg->inst_imm = ainfo->offset;
1733 call->used_fregs |= 1 << ainfo->reg;
1734 } else if (ainfo->regtype == RegTypeFP) {
1735 arg->unused = ainfo->reg;
1736 call->used_fregs |= 1 << ainfo->reg;
1737 if (ainfo->size == 4) {
1738 MonoInst *conv;
1739 arg->opcode = OP_OUTARG_R4;
1740 MONO_INST_NEW (cfg, conv, OP_FCONV_TO_R4);
1741 conv->inst_left = arg->inst_left;
1742 arg->inst_left = conv;
1743 }
1744 else
1745 arg->opcode = OP_OUTARG_R8;
1746 } else {
1747 g_assert_not_reached ();
1748 }
1749 }
1750 }
1751 /*
1752 * Reverse the call->out_args list.
1753 */
1754 {
1755 MonoInst *prev = NULL, *list = call->out_args, *next;
1756 while (list) {
1757 next = list->next;
1758 list->next = prev;
1759 prev = list;
1760 list = next;
1761 }
1762 call->out_args = prev;
1763 }
1764
1765 g_free (cinfo);
1766 return call;
1767 }
1768
1769 /*========================= End of Function ========================*/
1770
1771 /*------------------------------------------------------------------*/
1772 /* */
1773 /* Name - mono_arch_instrument_mem_needs */
1774 /* */
1775 /* Function - Allow tracing to work with this interface (with */
1776 /* an optional argument). */
1777 /* */
1778 /*------------------------------------------------------------------*/
1779
1780 void
1781 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
1782 {
1783 /* no stack room needed now (may be needed for FASTCALL-trace support) */
1784 *stack = 0;
1785 /* split prolog-epilog requirements? */
1786 *code = 50; /* max bytes needed: check this number */
1787 }
1788
1789 /*========================= End of Function ========================*/
1790
1791 /*------------------------------------------------------------------*/
1792 /* */
1793 /* Name - mono_arch_instrument_prolog */
1794 /* */
1795 /* Function - Create an "instrumented" prolog. */
1796 /* */
1797 /*------------------------------------------------------------------*/
1798
1799 void*
1800 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
1801 gboolean enable_arguments)
1802 {
1803 guchar *code = p;
1804 int parmOffset,
1805 fpOffset;
1806
1807 parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1808 if (cfg->method->save_lmf)
1809 parmOffset -= sizeof(MonoLMF);
1810 fpOffset = parmOffset + (5*sizeof(gint32));
1811
1812 s390_stm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1813 s390_std (code, s390_f0, 0, STK_BASE, fpOffset);
1814 s390_std (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1815 s390_std (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1816 s390_basr (code, s390_r13, 0);
1817 s390_j (code, 6);
1818 s390_word (code, cfg->method);
1819 s390_word (code, func);
1820 s390_l (code, s390_r2, 0, s390_r13, 4);
1821 s390_la (code, s390_r3, 0, STK_BASE, parmOffset);
1822 s390_lr (code, s390_r4, STK_BASE);
1823 s390_ahi (code, s390_r4, cfg->stack_usage);
1824 s390_l (code, s390_r1, 0, s390_r13, 8);
1825 s390_basr (code, s390_r14, s390_r1);
1826 s390_ld (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1827 s390_ld (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1828 s390_ld (code, s390_f0, 0, STK_BASE, fpOffset);
1829 s390_lm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1830
1831 return code;
1832 }
1833
1834 /*========================= End of Function ========================*/
1835
1836 /*------------------------------------------------------------------*/
1837 /* */
1838 /* Name - mono_arch_instrument_epilog */
1839 /* */
1840 /* Function - Create an epilog that will handle the returned */
1841 /* values used in instrumentation. */
1842 /* */
1843 /*------------------------------------------------------------------*/
1844
1845 void*
1846 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
1847 {
1848 guchar *code = p;
1849 int save_mode = SAVE_NONE,
1850 saveOffset;
1851 MonoMethod *method = cfg->method;
1852 int rtype = mono_type_get_underlying_type (method->signature->ret)->type;
1853
1854 saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1855 if (method->save_lmf)
1856 saveOffset -= sizeof(MonoLMF);
1857
1858 handle_enum:
1859 switch (rtype) {
1860 case MONO_TYPE_VOID:
1861 /* special case string .ctor icall */
1862 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
1863 save_mode = SAVE_ONE;
1864 else
1865 save_mode = SAVE_NONE;
1866 break;
1867 case MONO_TYPE_I8:
1868 case MONO_TYPE_U8:
1869 save_mode = SAVE_TWO;
1870 break;
1871 case MONO_TYPE_R4:
1872 case MONO_TYPE_R8:
1873 save_mode = SAVE_FP;
1874 break;
1875 case MONO_TYPE_VALUETYPE:
1876 if (method->signature->ret->data.klass->enumtype) {
1877 rtype = method->signature->ret->data.klass->enum_basetype->type;
1878 goto handle_enum;
1879 }
1880 save_mode = SAVE_STRUCT;
1881 break;
1882 default:
1883 save_mode = SAVE_ONE;
1884 break;
1885 }
1886
1887 switch (save_mode) {
1888 case SAVE_TWO:
1889 s390_stm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1890 if (enable_arguments) {
1891 s390_lr (code, s390_r4, s390_r3);
1892 s390_lr (code, s390_r3, s390_r2);
1893 }
1894 break;
1895 case SAVE_ONE:
1896 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1897 if (enable_arguments) {
1898 s390_lr (code, s390_r3, s390_r2);
1899 }
1900 break;
1901 case SAVE_FP:
1902 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1903 if (enable_arguments) {
1904 /* FIXME: what reg? */
1905 s390_ldr (code, s390_f2, s390_f0);
1906 s390_lm (code, s390_r3, s390_r4, cfg->frame_reg, saveOffset);
1907 }
1908 break;
1909 case SAVE_STRUCT:
1910 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1911 if (enable_arguments) {
1912 s390_l (code, s390_r3, 0, cfg->frame_reg,
1913 S390_MINIMAL_STACK_SIZE+cfg->param_area);
1914 }
1915 break;
1916 case SAVE_NONE:
1917 default:
1918 break;
1919 }
1920
1921 s390_basr (code, s390_r13, 0);
1922 s390_j (code, 6);
1923 s390_word (code, cfg->method);
1924 s390_word (code, func);
1925 s390_l (code, s390_r2, 0, s390_r13, 4);
1926 s390_l (code, s390_r1, 0, s390_r13, 8);
1927 s390_basr (code, s390_r14, s390_r1);
1928
1929 switch (save_mode) {
1930 case SAVE_TWO:
1931 s390_lm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1932 break;
1933 case SAVE_ONE:
1934 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1935 break;
1936 case SAVE_FP:
1937 s390_ld (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1938 break;
1939 case SAVE_STRUCT:
1940 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1941 break;
1942 case SAVE_NONE:
1943 default:
1944 break;
1945 }
1946
1947 return code;
1948 }
1949
1950 /*========================= End of Function ========================*/
1951
1952 /*------------------------------------------------------------------*/
1953 /* */
1954 /* Name - peephole_pass */
1955 /* */
1956 /* Function - Form a peephole pass at the code looking for */
1957 /* simple optimizations. */
1958 /* */
1959 /*------------------------------------------------------------------*/
1960
1961 static void
1962 peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
1963 {
1964 MonoInst *ins, *last_ins = NULL;
1965 ins = bb->code;
1966
1967 while (ins) {
1968
1969 switch (ins->opcode) {
1970 case OP_MUL_IMM:
1971 /* remove unnecessary multiplication with 1 */
1972 if (ins->inst_imm == 1) {
1973 if (ins->dreg != ins->sreg1) {
1974 ins->opcode = OP_MOVE;
1975 } else {
1976 last_ins->next = ins->next;
1977 ins = ins->next;
1978 continue;
1979 }
1980 }
1981 break;
1982 case OP_LOAD_MEMBASE:
1983 case OP_LOADI4_MEMBASE:
1984 /*
1985 * OP_STORE_MEMBASE_REG reg, offset(basereg)
1986 * OP_LOAD_MEMBASE offset(basereg), reg
1987 */
1988 if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG
1989 || last_ins->opcode == OP_STORE_MEMBASE_REG) &&
1990 ins->inst_basereg == last_ins->inst_destbasereg &&
1991 ins->inst_offset == last_ins->inst_offset) {
1992 if (ins->dreg == last_ins->sreg1) {
1993 last_ins->next = ins->next;
1994 ins = ins->next;
1995 continue;
1996 } else {
1997 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1998 ins->opcode = OP_MOVE;
1999 ins->sreg1 = last_ins->sreg1;
2000 }
2001
2002 /*
2003 * Note: reg1 must be different from the basereg in the second load
2004 * OP_LOAD_MEMBASE offset(basereg), reg1
2005 * OP_LOAD_MEMBASE offset(basereg), reg2
2006 * -->
2007 * OP_LOAD_MEMBASE offset(basereg), reg1
2008 * OP_MOVE reg1, reg2
2009 */
2010 } if (last_ins && (last_ins->opcode == OP_LOADI4_MEMBASE
2011 || last_ins->opcode == OP_LOAD_MEMBASE) &&
2012 ins->inst_basereg != last_ins->dreg &&
2013 ins->inst_basereg == last_ins->inst_basereg &&
2014 ins->inst_offset == last_ins->inst_offset) {
2015
2016 if (ins->dreg == last_ins->dreg) {
2017 last_ins->next = ins->next;
2018 ins = ins->next;
2019 continue;
2020 } else {
2021 ins->opcode = OP_MOVE;
2022 ins->sreg1 = last_ins->dreg;
2023 }
2024
2025 //g_assert_not_reached ();
2026
2027 #if 0
2028 /*
2029 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
2030 * OP_LOAD_MEMBASE offset(basereg), reg
2031 * -->
2032 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
2033 * OP_ICONST reg, imm
2034 */
2035 } else if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_IMM
2036 || last_ins->opcode == OP_STORE_MEMBASE_IMM) &&
2037 ins->inst_basereg == last_ins->inst_destbasereg &&
2038 ins->inst_offset == last_ins->inst_offset) {
2039 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
2040 ins->opcode = OP_ICONST;
2041 ins->inst_c0 = last_ins->inst_imm;
2042 g_assert_not_reached (); // check this rule
2043 #endif
2044 }
2045 break;
2046 case OP_LOADU1_MEMBASE:
2047 case OP_LOADI1_MEMBASE:
2048 if (last_ins && (last_ins->opcode == OP_STOREI1_MEMBASE_REG) &&
2049 ins->inst_basereg == last_ins->inst_destbasereg &&
2050 ins->inst_offset == last_ins->inst_offset) {
2051 if (ins->dreg == last_ins->sreg1) {
2052 last_ins->next = ins->next;
2053 ins = ins->next;
2054 continue;
2055 } else {
2056 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
2057 ins->opcode = OP_MOVE;
2058 ins->sreg1 = last_ins->sreg1;
2059 }
2060 }
2061 break;
2062 case OP_LOADU2_MEMBASE:
2063 case OP_LOADI2_MEMBASE:
2064 if (last_ins && (last_ins->opcode == OP_STOREI2_MEMBASE_REG) &&
2065 ins->inst_basereg == last_ins->inst_destbasereg &&
2066 ins->inst_offset == last_ins->inst_offset) {
2067 if (ins->dreg == last_ins->sreg1) {
2068 last_ins->next = ins->next;
2069 ins = ins->next;
2070 continue;
2071 } else {
2072 ins->opcode = OP_MOVE;
2073 ins->sreg1 = last_ins->sreg1;
2074 }
2075 }
2076 break;
2077 case CEE_CONV_I4:
2078 case CEE_CONV_U4:
2079 case OP_MOVE:
2080 /*
2081 * OP_MOVE reg, reg
2082 */
2083 if (ins->dreg == ins->sreg1) {
2084 if (last_ins)
2085 last_ins->next = ins->next;
2086 ins = ins->next;
2087 continue;
2088 }
2089 /*
2090 * OP_MOVE sreg, dreg
2091 * OP_MOVE dreg, sreg
2092 */
2093 if (last_ins && last_ins->opcode == OP_MOVE &&
2094 ins->sreg1 == last_ins->dreg &&
2095 ins->dreg == last_ins->sreg1) {
2096 last_ins->next = ins->next;
2097 ins = ins->next;
2098 continue;
2099 }
2100 break;
2101 }
2102 last_ins = ins;
2103 ins = ins->next;
2104 }
2105 bb->last_ins = last_ins;
2106 }
2107
2108 /*========================= End of Function ========================*/
2109
2110 /*------------------------------------------------------------------*/
2111 /* */
2112 /* Name - mono_spillvar_offset */
2113 /* */
2114 /* Function - Returns the offset used by spillvar. It allocates */
2115 /* a new spill variable if necessary. */
2116 /* */
2117 /*------------------------------------------------------------------*/
2118
2119 static int
2120 mono_spillvar_offset (MonoCompile *cfg, int spillvar)
2121 {
2122 MonoSpillInfo **si, *info;
2123 int i = 0;
2124
2125 si = &cfg->spill_info;
2126
2127 while (i <= spillvar) {
2128
2129 if (!*si) {
2130 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
2131 info->next = NULL;
2132 info->offset = cfg->stack_offset;
2133 cfg->stack_offset += sizeof (gpointer);
2134 }
2135
2136 if (i == spillvar)
2137 return (*si)->offset;
2138
2139 i++;
2140 si = &(*si)->next;
2141 }
2142
2143 g_assert_not_reached ();
2144 return 0;
2145 }
2146
2147 /*========================= End of Function ========================*/
2148
2149 /*------------------------------------------------------------------*/
2150 /* */
2151 /* Name - mono_spillvar_offset_float */
2152 /* */
2153 /* Function - */
2154 /* */
2155 /*------------------------------------------------------------------*/
2156
2157 static int
2158 mono_spillvar_offset_float (MonoCompile *cfg, int spillvar)
2159 {
2160 MonoSpillInfo **si, *info;
2161 int i = 0;
2162
2163 si = &cfg->spill_info_float;
2164
2165 while (i <= spillvar) {
2166
2167 if (!*si) {
2168 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
2169 info->next = NULL;
2170 cfg->stack_offset = S390_ALIGN(cfg->stack_offset, S390_STACK_ALIGNMENT);
2171 info->offset = cfg->stack_offset;
2172 cfg->stack_offset += sizeof (double);
2173 }
2174
2175 if (i == spillvar)
2176 return (*si)->offset;
2177
2178 i++;
2179 si = &(*si)->next;
2180 }
2181
2182 g_assert_not_reached ();
2183 return 0;
2184 }
2185
2186 /*========================= End of Function ========================*/
2187
2188 /*------------------------------------------------------------------*/
2189 /* */
2190 /* Name - print_ins */
2191 /* */
2192 /* Function - Decode and print the instruction for tracing. */
2193 /* */
2194 /*------------------------------------------------------------------*/
2195
2196 static void
2197 print_ins (int i, MonoInst *ins)
2198 {
2199 const char *spec = ins_spec [ins->opcode];
2200 g_print ("\t%-2d %s", i, mono_inst_name (ins->opcode));
2201 if (spec [MONO_INST_DEST]) {
2202 if (ins->dreg >= MONO_MAX_IREGS)
2203 g_print (" R%d <-", ins->dreg);
2204 else
2205 g_print (" %s <-", mono_arch_regname (ins->dreg));
2206 }
2207 if (spec [MONO_INST_SRC1]) {
2208 if (ins->sreg1 >= MONO_MAX_IREGS)
2209 g_print (" R%d", ins->sreg1);
2210 else
2211 g_print (" %s", mono_arch_regname (ins->sreg1));
2212 }
2213 if (spec [MONO_INST_SRC2]) {
2214 if (ins->sreg2 >= MONO_MAX_IREGS)
2215 g_print (" R%d", ins->sreg2);
2216 else
2217 g_print (" %s", mono_arch_regname (ins->sreg2));
2218 }
2219 if (spec [MONO_INST_CLOB])
2220 g_print (" clobbers: %c", spec [MONO_INST_CLOB]);
2221 g_print ("\n");
2222 }
2223
2224 /*========================= End of Function ========================*/
2225
2226 /*------------------------------------------------------------------*/
2227 /* */
2228 /* Name - print_regtrack. */
2229 /* */
2230 /* Function - */
2231 /* */
2232 /*------------------------------------------------------------------*/
2233
2234 static void
2235 print_regtrack (RegTrack *t, int num)
2236 {
2237 int i;
2238 char buf [32];
2239 const char *r;
2240
2241 for (i = 0; i < num; ++i) {
2242 if (!t [i].born_in)
2243 continue;
2244 if (i >= MONO_MAX_IREGS) {
2245 g_snprintf (buf, sizeof(buf), "R%d", i);
2246 r = buf;
2247 } else
2248 r = mono_arch_regname (i);
2249 g_print ("liveness: %s [%d - %d]\n", r, t [i].born_in, t[i].last_use);
2250 }
2251 }
2252
2253 /*========================= End of Function ========================*/
2254
2255 /*------------------------------------------------------------------*/
2256 /* */
2257 /* Name - inst_list_prepend */
2258 /* */
2259 /* Function - Prepend an instruction to the list. */
2260 /* */
2261 /*------------------------------------------------------------------*/
2262
2263 static inline InstList*
2264 inst_list_prepend (MonoMemPool *pool, InstList *list, MonoInst *data)
2265 {
2266 InstList *item = mono_mempool_alloc (pool, sizeof (InstList));
2267 item->data = data;
2268 item->prev = NULL;
2269 item->next = list;
2270 if (list)
2271 list->prev = item;
2272 return item;
2273 }
2274
2275 /*========================= End of Function ========================*/
2276
2277 /*------------------------------------------------------------------*/
2278 /* */
2279 /* Name - get_register_force_spilling */
2280 /* */
2281 /* Function - Force the spilling of the variable in the */
2282 /* symbolic register 'reg'. */
2283 /* */
2284 /*------------------------------------------------------------------*/
2285
2286 static int
2287 get_register_force_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, int reg)
2288 {
2289 MonoInst *load;
2290 int i, sel, spill;
2291
2292 sel = cfg->rs->iassign [reg];
2293 i = reg;
2294 spill = ++cfg->spill_count;
2295 cfg->rs->iassign [i] = -spill - 1;
2296 mono_regstate_free_int (cfg->rs, sel);
2297 /*----------------------------------------------------------*/
2298 /* we need to create a spill var and insert a load to sel */
2299 /* after the current instruction */
2300 /*----------------------------------------------------------*/
2301 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2302 load->dreg = sel;
2303 load->inst_basereg = cfg->frame_reg;
2304 load->inst_offset = mono_spillvar_offset (cfg, spill);
2305 if (item->prev) {
2306 while (ins->next != item->prev->data)
2307 ins = ins->next;
2308 }
2309 load->next = ins->next;
2310 ins->next = load;
2311 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n",
2312 spill, load->inst_offset, i, mono_arch_regname (sel)));
2313 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2314 g_assert (i == sel);
2315
2316 return sel;
2317 }
2318
2319 /*========================= End of Function ========================*/
2320
2321 /*------------------------------------------------------------------*/
2322 /* */
2323 /* Name - get_register_spilling */
2324 /* */
2325 /* Function - */
2326 /* */
2327 /*------------------------------------------------------------------*/
2328
2329 static int
2330 get_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2331 {
2332 MonoInst *load;
2333 int i, sel, spill;
2334
2335 DEBUG (g_print ("start regmask to assign R%d: 0x%08x (R%d <- R%d R%d)\n", reg, regmask, ins->dreg, ins->sreg1, ins->sreg2));
2336 /* exclude the registers in the current instruction */
2337 if (reg != ins->sreg1 &&
2338 (reg_is_freeable (ins->sreg1) ||
2339 (ins->sreg1 >= MONO_MAX_IREGS &&
2340 cfg->rs->iassign [ins->sreg1] >= 0))) {
2341 if (ins->sreg1 >= MONO_MAX_IREGS)
2342 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg1]);
2343 else
2344 regmask &= ~ (1 << ins->sreg1);
2345 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2346 }
2347 if (reg != ins->sreg2 &&
2348 (reg_is_freeable (ins->sreg2) ||
2349 (ins->sreg2 >= MONO_MAX_IREGS &&
2350 cfg->rs->iassign [ins->sreg2] >= 0))) {
2351 if (ins->sreg2 >= MONO_MAX_IREGS)
2352 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg2]);
2353 else
2354 regmask &= ~ (1 << ins->sreg2);
2355 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2356 }
2357 if (reg != ins->dreg && reg_is_freeable (ins->dreg)) {
2358 regmask &= ~ (1 << ins->dreg);
2359 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2360 }
2361
2362 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2363 g_assert (regmask); /* need at least a register we can free */
2364 sel = -1;
2365 /* we should track prev_use and spill the register that's farther */
2366 for (i = 0; i < MONO_MAX_IREGS; ++i) {
2367 if (regmask & (1 << i)) {
2368 sel = i;
2369 DEBUG (g_print ("selected register %s has assignment %d\n", mono_arch_regname (sel), cfg->rs->iassign [sel]));
2370 break;
2371 }
2372 }
2373 i = cfg->rs->isymbolic [sel];
2374 spill = ++cfg->spill_count;
2375 cfg->rs->iassign [i] = -spill - 1;
2376 mono_regstate_free_int (cfg->rs, sel);
2377 /* we need to create a spill var and insert a load to sel after the current instruction */
2378 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2379 load->dreg = sel;
2380 load->inst_basereg = cfg->frame_reg;
2381 load->inst_offset = mono_spillvar_offset (cfg, spill);
2382 if (item->prev) {
2383 while (ins->next != item->prev->data)
2384 ins = ins->next;
2385 }
2386 load->next = ins->next;
2387 ins->next = load;
2388 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2389 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2390 g_assert (i == sel);
2391
2392 return sel;
2393 }
2394
2395 /*========================= End of Function ========================*/
2396
2397 /*------------------------------------------------------------------*/
2398 /* */
2399 /* Name - get_float_register_spilling */
2400 /* */
2401 /* Function - */
2402 /* */
2403 /*------------------------------------------------------------------*/
2404
2405 static int
2406 get_float_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2407 {
2408 MonoInst *load;
2409 int i, sel, spill;
2410
2411 DEBUG (g_print ("start regmask to assign R%d: 0x%08x (R%d <- R%d R%d)\n", reg, regmask, ins->dreg, ins->sreg1, ins->sreg2));
2412 /* exclude the registers in the current instruction */
2413 if (reg != ins->sreg1 &&
2414 (freg_is_freeable (ins->sreg1) ||
2415 (ins->sreg1 >= MONO_MAX_FREGS &&
2416 cfg->rs->fassign [ins->sreg1] >= 0))) {
2417 if (ins->sreg1 >= MONO_MAX_FREGS)
2418 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg1]);
2419 else
2420 regmask &= ~ (1 << ins->sreg1);
2421 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2422 }
2423 if (reg != ins->sreg2 &&
2424 (freg_is_freeable (ins->sreg2) ||
2425 (ins->sreg2 >= MONO_MAX_FREGS &&
2426 cfg->rs->fassign [ins->sreg2] >= 0))) {
2427 if (ins->sreg2 >= MONO_MAX_FREGS)
2428 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg2]);
2429 else
2430 regmask &= ~ (1 << ins->sreg2);
2431 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2432 }
2433 if (reg != ins->dreg && freg_is_freeable (ins->dreg)) {
2434 regmask &= ~ (1 << ins->dreg);
2435 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2436 }
2437
2438 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2439 g_assert (regmask); /* need at least a register we can free */
2440 sel = -1;
2441 /* we should track prev_use and spill the register that's farther */
2442 for (i = 0; i < MONO_MAX_FREGS; ++i) {
2443 if (regmask & (1 << i)) {
2444 sel = i;
2445 DEBUG (g_print ("selected register %s has assignment %d\n",
2446 mono_arch_regname (sel), cfg->rs->fassign [sel]));
2447 break;
2448 }
2449 }
2450 i = cfg->rs->fsymbolic [sel];
2451 spill = ++cfg->spill_count;
2452 cfg->rs->fassign [i] = -spill - 1;
2453 mono_regstate_free_float(cfg->rs, sel);
2454 /* we need to create a spill var and insert a load to sel after the current instruction */
2455 MONO_INST_NEW (cfg, load, OP_LOADR8_MEMBASE);
2456 load->dreg = sel;
2457 load->inst_basereg = cfg->frame_reg;
2458 load->inst_offset = mono_spillvar_offset_float (cfg, spill);
2459 if (item->prev) {
2460 while (ins->next != item->prev->data)
2461 ins = ins->next;
2462 }
2463 load->next = ins->next;
2464 ins->next = load;
2465 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2466 i = mono_regstate_alloc_float (cfg->rs, 1 << sel);
2467 g_assert (i == sel);
2468
2469 return sel;
2470 }
2471
2472 /*========================= End of Function ========================*/
2473
2474 /*------------------------------------------------------------------*/
2475 /* */
2476 /* Name - create_copy_ins */
2477 /* */
2478 /* Function - Create an instruction to copy from reg to reg. */
2479 /* */
2480 /*------------------------------------------------------------------*/
2481
2482 static MonoInst*
2483 create_copy_ins (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2484 {
2485 MonoInst *copy;
2486 MONO_INST_NEW (cfg, copy, OP_MOVE);
2487 copy->dreg = dest;
2488 copy->sreg1 = src;
2489 if (ins) {
2490 copy->next = ins->next;
2491 ins->next = copy;
2492 }
2493 DEBUG (g_print ("\tforced copy from %s to %s\n",
2494 mono_arch_regname (src), mono_arch_regname (dest)));
2495 return copy;
2496 }
2497
2498 /*========================= End of Function ========================*/
2499
2500 /*------------------------------------------------------------------*/
2501 /* */
2502 /* Name - create_copy_ins_float */
2503 /* */
2504 /* Function - Create an instruction to copy from float reg to */
2505 /* float reg. */
2506 /* */
2507 /*------------------------------------------------------------------*/
2508
2509 static MonoInst*
2510 create_copy_ins_float (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2511 {
2512 MonoInst *copy;
2513 MONO_INST_NEW (cfg, copy, OP_FMOVE);
2514 copy->dreg = dest;
2515 copy->sreg1 = src;
2516 if (ins) {
2517 copy->next = ins->next;
2518 ins->next = copy;
2519 }
2520 DEBUG (g_print ("\tforced copy from %s to %s\n",
2521 mono_arch_regname (src), mono_arch_regname (dest)));
2522 return copy;
2523 }
2524
2525 /*========================= End of Function ========================*/
2526
2527 /*------------------------------------------------------------------*/
2528 /* */
2529 /* Name - create_spilled_store */
2530 /* */
2531 /* Function - Spill register to storage. */
2532 /* */
2533 /*------------------------------------------------------------------*/
2534
2535 static MonoInst*
2536 create_spilled_store (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2537 {
2538 MonoInst *store;
2539 MONO_INST_NEW (cfg, store, OP_STORE_MEMBASE_REG);
2540 store->sreg1 = reg;
2541 store->inst_destbasereg = cfg->frame_reg;
2542 store->inst_offset = mono_spillvar_offset (cfg, spill);
2543 if (ins) {
2544 store->next = ins->next;
2545 ins->next = store;
2546 }
2547 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2548 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2549 return store;
2550 }
2551
2552 /*========================= End of Function ========================*/
2553
2554 /*------------------------------------------------------------------*/
2555 /* */
2556 /* Name - create_spilled_store_float */
2557 /* */
2558 /* Function - Spill floating point register to storage. */
2559 /* */
2560 /*------------------------------------------------------------------*/
2561
2562 static MonoInst*
2563 create_spilled_store_float (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2564 {
2565 MonoInst *store;
2566 MONO_INST_NEW (cfg, store, OP_STORER8_MEMBASE_REG);
2567 store->sreg1 = reg;
2568 store->inst_destbasereg = cfg->frame_reg;
2569 store->inst_offset = mono_spillvar_offset_float (cfg, spill);
2570 if (ins) {
2571 store->next = ins->next;
2572 ins->next = store;
2573 }
2574 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2575 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2576 return store;
2577 }
2578
2579 /*========================= End of Function ========================*/
2580
2581 /*------------------------------------------------------------------*/
2582 /* */
2583 /* Name - insert_before_ins */
2584 /* */
2585 /* Function - Insert an instruction before another. */
2586 /* */
2587 /*------------------------------------------------------------------*/
2588
2589 static void
2590 insert_before_ins (MonoInst *ins, InstList *item, MonoInst* to_insert)
2591 {
2592 MonoInst *prev;
2593 g_assert (item->next);
2594 prev = item->next->data;
2595
2596 while (prev->next != ins)
2597 prev = prev->next;
2598 to_insert->next = ins;
2599 prev->next = to_insert;
2600 /*
2601 * needed otherwise in the next instruction we can add an ins to the
2602 * end and that would get past this instruction.
2603 */
2604 item->data = to_insert;
2605 }
2606
2607 /*========================= End of Function ========================*/
2608
2609 /*------------------------------------------------------------------*/
2610 /* */
2611 /* Name - alloc_int_reg */
2612 /* */
2613 /* Function - Allocate a general register. */
2614 /* */
2615 /*------------------------------------------------------------------*/
2616
2617 static int
2618 alloc_int_reg (MonoCompile *cfg, InstList *curinst, MonoInst *ins, int sym_reg, guint32 allow_mask)
2619 {
2620 int val = cfg->rs->iassign [sym_reg];
2621 DEBUG (g_print ("Allocating a general register for %d (%d) with mask %08x\n",val,sym_reg,allow_mask));
2622 if (val < 0) {
2623 int spill = 0;
2624 if (val < -1) {
2625 /* the register gets spilled after this inst */
2626 spill = -val -1;
2627 }
2628 val = mono_regstate_alloc_int (cfg->rs, allow_mask);
2629 if (val < 0)
2630 val = get_register_spilling (cfg, curinst, ins, allow_mask, sym_reg);
2631 cfg->rs->iassign [sym_reg] = val;
2632 /* add option to store before the instruction for src registers */
2633 if (spill)
2634 create_spilled_store (cfg, spill, val, sym_reg, ins);
2635 }
2636 DEBUG (g_print ("Allocated %d for %d\n",val,sym_reg));
2637 cfg->rs->isymbolic [val] = sym_reg;
2638 return val;
2639 }
2640
2641 /*========================= End of Function ========================*/
2642
2643 /*------------------------------------------------------------------*/
2644 /* */
2645 /* Name - mono_arch_local_regalloc. */
2646 /* */
2647 /* Function - We first scan the list of instructions and we */
2648 /* save the liveness information of each register */
2649 /* (when the register is first used, when its value */
2650 /* is set etc.). We also reverse the list of instr- */
2651 /* uctions (in the InstList list) because assigning */
2652 /* registers backwards allows for more tricks to be */
2653 /* used. */
2654 /* */
2655 /*------------------------------------------------------------------*/
2656
2657 void
2658 mono_arch_local_regalloc (MonoCompile *cfg, MonoBasicBlock *bb)
2659 {
2660 MonoInst *ins;
2661 MonoRegState *rs = cfg->rs;
2662 int i, val;
2663 RegTrack *reginfo, *reginfof;
2664 RegTrack *reginfo1, *reginfo2, *reginfod;
2665 InstList *tmp, *reversed = NULL;
2666 const char *spec;
2667 guint32 src1_mask, src2_mask, dest_mask;
2668 guint32 cur_iregs, cur_fregs;
2669
2670 if (!bb->code)
2671 return;
2672 rs->next_vireg = bb->max_ireg;
2673 rs->next_vfreg = bb->max_freg;
2674 mono_regstate_assign (rs);
2675 reginfo = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vireg);
2676 reginfof = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vfreg);
2677 rs->ifree_mask = S390_CALLER_REGS;
2678 rs->ffree_mask = S390_CALLER_FREGS;
2679
2680 ins = bb->code;
2681 i = 1;
2682 DEBUG (g_print ("LOCAL regalloc: basic block: %d\n", bb->block_num));
2683 /* forward pass on the instructions to collect register liveness info */
2684 while (ins) {
2685 spec = ins_spec [ins->opcode];
2686 DEBUG (print_ins (i, ins));
2687 // if (spec [MONO_INST_CLOB] == 'c') {
2688 // MonoCallInst * call = (MonoCallInst*)ins;
2689 // int j;
2690 // }
2691 if (spec [MONO_INST_SRC1]) {
2692 if (spec [MONO_INST_SRC1] == 'f')
2693 reginfo1 = reginfof;
2694 else
2695 reginfo1 = reginfo;
2696 reginfo1 [ins->sreg1].prev_use = reginfo1 [ins->sreg1].last_use;
2697 reginfo1 [ins->sreg1].last_use = i;
2698 } else {
2699 ins->sreg1 = -1;
2700 }
2701 if (spec [MONO_INST_SRC2]) {
2702 if (spec [MONO_INST_SRC2] == 'f')
2703 reginfo2 = reginfof;
2704 else
2705 reginfo2 = reginfo;
2706 reginfo2 [ins->sreg2].prev_use = reginfo2 [ins->sreg2].last_use;
2707 reginfo2 [ins->sreg2].last_use = i;
2708 } else {
2709 ins->sreg2 = -1;
2710 }
2711 if (spec [MONO_INST_DEST]) {
2712 if (spec [MONO_INST_DEST] == 'f')
2713 reginfod = reginfof;
2714 else
2715 reginfod = reginfo;
2716 if (spec [MONO_INST_DEST] != 'b') /* it's not just a base register */
2717 reginfod [ins->dreg].killed_in = i;
2718 reginfod [ins->dreg].prev_use = reginfod [ins->dreg].last_use;
2719 reginfod [ins->dreg].last_use = i;
2720 if (reginfod [ins->dreg].born_in == 0 || reginfod [ins->dreg].born_in > i)
2721 reginfod [ins->dreg].born_in = i;
2722 if (spec [MONO_INST_DEST] == 'l') {
2723 /* result in R2/R3, the virtual register is allocated sequentially */
2724 reginfod [ins->dreg + 1].prev_use = reginfod [ins->dreg + 1].last_use;
2725 reginfod [ins->dreg + 1].last_use = i;
2726 if (reginfod [ins->dreg + 1].born_in == 0 || reginfod [ins->dreg + 1].born_in > i)
2727 reginfod [ins->dreg + 1].born_in = i;
2728 }
2729 } else {
2730 ins->dreg = -1;
2731 }
2732 reversed = inst_list_prepend (cfg->mempool, reversed, ins);
2733 ++i;
2734 ins = ins->next;
2735 }
2736
2737 cur_iregs = S390_CALLER_REGS;
2738 cur_fregs = S390_CALLER_FREGS;
2739
2740 DEBUG (print_regtrack (reginfo, rs->next_vireg));
2741 DEBUG (print_regtrack (reginfof, rs->next_vfreg));
2742 tmp = reversed;
2743 while (tmp) {
2744 int prev_dreg, prev_sreg1, prev_sreg2;
2745 --i;
2746 ins = tmp->data;
2747 spec = ins_spec [ins->opcode];
2748 DEBUG (g_print ("processing:"));
2749 DEBUG (print_ins (i, ins));
2750 /* make the register available for allocation: FIXME add fp reg */
2751 if (ins->opcode == OP_SETREG || ins->opcode == OP_SETREGIMM) {
2752 cur_iregs |= 1 << ins->dreg;
2753 DEBUG (g_print ("adding %d to cur_iregs\n", ins->dreg));
2754 } else if (ins->opcode == OP_SETFREG) {
2755 cur_fregs |= 1 << ins->dreg;
2756 DEBUG (g_print ("adding %d to cur_fregs\n", ins->dreg));
2757 } else if (spec [MONO_INST_CLOB] == 'c') {
2758 MonoCallInst *cinst = (MonoCallInst*)ins;
2759 DEBUG (g_print ("excluding regs 0x%x from cur_iregs (0x%x)\n",
2760 cinst->used_iregs, cur_iregs));
2761 DEBUG (g_print ("excluding fpregs 0x%x from cur_fregs (0x%x)\n",
2762 cinst->used_fregs, cur_fregs));
2763 cur_iregs &= ~cinst->used_iregs;
2764 cur_fregs &= ~cinst->used_fregs;
2765 DEBUG (g_print ("available cur_iregs: 0x%x\n", cur_iregs));
2766 DEBUG (g_print ("available cur_fregs: 0x%x\n", cur_fregs));
2767 /*------------------------------------------------------------*/
2768 /* registers used by the calling convention are excluded from */
2769 /* allocation: they will be selectively enabled when they are */
2770 /* assigned by the special SETREG opcodes. */
2771 /*------------------------------------------------------------*/
2772 }
2773 dest_mask = src1_mask = src2_mask = cur_iregs;
2774 /*------------------------------------------------------*/
2775 /* update for use with FP regs... */
2776 /*------------------------------------------------------*/
2777 if (spec [MONO_INST_DEST] == 'f') {
2778 dest_mask = cur_fregs;
2779 if (ins->dreg >= MONO_MAX_FREGS) {
2780 val = rs->fassign [ins->dreg];
2781 prev_dreg = ins->dreg;
2782 if (val < 0) {
2783 int spill = 0;
2784 if (val < -1) {
2785 /* the register gets spilled after this inst */
2786 spill = -val -1;
2787 }
2788 val = mono_regstate_alloc_float (rs, dest_mask);
2789 if (val < 0)
2790 val = get_float_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2791 rs->fassign [ins->dreg] = val;
2792 if (spill)
2793 create_spilled_store_float (cfg, spill, val, prev_dreg, ins);
2794 }
2795 DEBUG (g_print ("\tassigned dreg %s to dest R%d\n",
2796 mono_arch_regname (val), ins->dreg));
2797 rs->fsymbolic [val] = prev_dreg;
2798 ins->dreg = val;
2799 if (spec [MONO_INST_CLOB] == 'c' && ins->dreg != s390_f0) {
2800 /* this instruction only outputs to s390_f0, need to copy */
2801 create_copy_ins_float (cfg, ins->dreg, s390_f0, ins);
2802 }
2803 } else {
2804 prev_dreg = -1;
2805 }
2806 if (freg_is_freeable (ins->dreg) && prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i || !(cur_fregs & (1 << ins->dreg)))) {
2807 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2808 mono_regstate_free_float (rs, ins->dreg);
2809 }
2810 } else if (ins->dreg >= MONO_MAX_IREGS) {
2811 val = rs->iassign [ins->dreg];
2812 prev_dreg = ins->dreg;
2813 if (val < 0) {
2814 int spill = 0;
2815 if (val < -1) {
2816 /* the register gets spilled after this inst */
2817 spill = -val -1;
2818 }
2819 val = mono_regstate_alloc_int (rs, dest_mask);
2820 if (val < 0)
2821 val = get_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2822 rs->iassign [ins->dreg] = val;
2823 if (spill)
2824 create_spilled_store (cfg, spill, val, prev_dreg, ins);
2825 }
2826 DEBUG (g_print ("\tassigned dreg %s to dest R%d (prev: R%d)\n",
2827 mono_arch_regname (val), ins->dreg, prev_dreg));
2828 rs->isymbolic [val] = prev_dreg;
2829 ins->dreg = val;
2830 if (spec [MONO_INST_DEST] == 'l') {
2831 int hreg = prev_dreg + 1;
2832 val = rs->iassign [hreg];
2833 if (val < 0) {
2834 int spill = 0;
2835 if (val < -1) {
2836 /* the register gets spilled after this inst */
2837 spill = -val -1;
2838 }
2839 val = mono_regstate_alloc_int (rs, dest_mask);
2840 if (val < 0)
2841 val = get_register_spilling (cfg, tmp, ins, dest_mask, hreg);
2842 rs->iassign [hreg] = val;
2843 if (spill)
2844 create_spilled_store (cfg, spill, val, hreg, ins);
2845 }
2846 DEBUG (g_print ("\tassigned hreg %s to dest R%d\n", mono_arch_regname (val), hreg));
2847 rs->isymbolic [val] = hreg;
2848 /* FIXME:? ins->dreg = val; */
2849 if (ins->dreg == s390_r3) {
2850 if (val != s390_r2)
2851 create_copy_ins (cfg, val, s390_r2, ins);
2852 } else if (ins->dreg == s390_r2) {
2853 if (val == s390_r3) {
2854 /* swap */
2855 create_copy_ins (cfg, s390_r3, s390_r0, ins);
2856 create_copy_ins (cfg, s390_r2, s390_r3, ins);
2857 create_copy_ins (cfg, s390_r0, s390_r2, ins);
2858 } else {
2859 /* two forced copies */
2860 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2861 create_copy_ins (cfg, val, s390_r2, ins);
2862 }
2863 } else {
2864 if (val == s390_r2) {
2865 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2866 } else {
2867 /* two forced copies */
2868 create_copy_ins (cfg, val, s390_r2, ins);
2869 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2870 }
2871 }
2872 if (reg_is_freeable (val) &&
2873 hreg >= 0 &&
2874 (reginfo [hreg].born_in >= i &&
2875 !(cur_iregs & (1 << val)))) {
2876 DEBUG (g_print ("\tfreeable %s (R%d)\n", mono_arch_regname (val), hreg));
2877 mono_regstate_free_int (rs, val);
2878 }
2879 } else if (spec [MONO_INST_DEST] == 'a' && ins->dreg != s390_r2 && spec [MONO_INST_CLOB] != 'd') {
2880 /* this instruction only outputs to s390_r2, need to copy */
2881 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2882 }
2883 } else {
2884 prev_dreg = -1;
2885 }
2886 if (spec [MONO_INST_DEST] == 'f' &&
2887 freg_is_freeable (ins->dreg) &&
2888 prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i)) {
2889 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2890 mono_regstate_free_float (rs, ins->dreg);
2891 } else if (spec [MONO_INST_DEST] != 'f' &&
2892 reg_is_freeable (ins->dreg) &&
2893 prev_dreg >= 0 && (reginfo [prev_dreg].born_in >= i)) {
2894 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2895 mono_regstate_free_int (rs, ins->dreg);
2896 }
2897 if (spec [MONO_INST_SRC1] == 'f') {
2898 src1_mask = cur_fregs;
2899 if (ins->sreg1 >= MONO_MAX_FREGS) {
2900 val = rs->fassign [ins->sreg1];
2901 prev_sreg1 = ins->sreg1;
2902 if (val < 0) {
2903 int spill = 0;
2904 if (val < -1) {
2905 /* the register gets spilled after this inst */
2906 spill = -val -1;
2907 }
2908 val = mono_regstate_alloc_float (rs, src1_mask);
2909 if (val < 0)
2910 val = get_float_register_spilling (cfg, tmp, ins, src1_mask, ins->sreg1);
2911 rs->fassign [ins->sreg1] = val;
2912 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n", mono_arch_regname (val), ins->sreg1));
2913 if (spill) {
2914 MonoInst *store = create_spilled_store_float (cfg, spill, val, prev_sreg1, NULL);
2915 insert_before_ins (ins, tmp, store);
2916 }
2917 }
2918 rs->fsymbolic [val] = prev_sreg1;
2919 ins->sreg1 = val;
2920 } else {
2921 prev_sreg1 = -1;
2922 }
2923 } else if (ins->sreg1 >= MONO_MAX_IREGS) {
2924 val = rs->iassign [ins->sreg1];
2925 prev_sreg1 = ins->sreg1;
2926 if (val < 0) {
2927 int spill = 0;
2928 if (val < -1) {
2929 /* the register gets spilled after this inst */
2930 spill = -val -1;
2931 }
2932 val = mono_regstate_alloc_int (rs, src1_mask);
2933 if (val < 0)
2934 val = get_register_spilling (cfg, tmp, ins,
2935 src1_mask,
2936 ins->sreg1);
2937 rs->iassign [ins->sreg1] = val;
2938 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n",
2939 mono_arch_regname (val), ins->sreg1));
2940 if (spill) {
2941 MonoInst *store;
2942 store = create_spilled_store (cfg, spill, val,
2943 prev_sreg1, NULL);
2944 insert_before_ins (ins, tmp, store);
2945 }
2946 }
2947 rs->isymbolic [val] = prev_sreg1;
2948 ins->sreg1 = val;
2949 } else {
2950 prev_sreg1 = -1;
2951 }
2952 /*----------------------------------------------*/
2953 /* handle clobbering of sreg1 */
2954 /*----------------------------------------------*/
2955 if ((spec [MONO_INST_CLOB] == '1' ||
2956 spec [MONO_INST_CLOB] == 's') &&
2957 ins->dreg != ins->sreg1) {
2958 MonoInst *copy;
2959 copy = create_copy_ins (cfg, ins->dreg, ins->sreg1, NULL);
2960 DEBUG (g_print ("\tneed to copy sreg1 %s to dreg %s\n",
2961 mono_arch_regname (ins->sreg1),
2962 mono_arch_regname (ins->dreg)));
2963 if (ins->sreg2 == -1 || spec [MONO_INST_CLOB] == 's') {
2964 /* note: the copy is inserted before the current instruction! */
2965 insert_before_ins (ins, tmp, copy);
2966 /* we set sreg1 to dest as well */
2967 prev_sreg1 = ins->sreg1 = ins->dreg;
2968 } else {
2969 /* inserted after the operation */
2970 copy->next = ins->next;
2971 ins->next = copy;
2972 }
2973 }
2974
2975 if (spec [MONO_INST_SRC2] == 'f') {
2976 src2_mask = cur_fregs;
2977 if (ins->sreg2 >= MONO_MAX_FREGS) {
2978 val = rs->fassign [ins->sreg2];
2979 prev_sreg2 = ins->sreg2;
2980 if (val < 0) {
2981 int spill = 0;
2982 if (val < -1) {
2983 /* the register gets spilled after this inst */
2984 spill = -val -1;
2985 }
2986 val = mono_regstate_alloc_float (rs, src2_mask);
2987 if (val < 0)
2988 val = get_float_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2989 rs->fassign [ins->sreg2] = val;
2990 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2991 if (spill)
2992 create_spilled_store_float (cfg, spill, val, prev_sreg2, ins);
2993 }
2994 rs->fsymbolic [val] = prev_sreg2;
2995 ins->sreg2 = val;
2996 } else {
2997 prev_sreg2 = -1;
2998 }
2999 } else if (ins->sreg2 >= MONO_MAX_IREGS) {
3000 val = rs->iassign [ins->sreg2];
3001 prev_sreg2 = ins->sreg2;
3002 if (val < 0) {
3003 int spill = 0;
3004 if (val < -1) {
3005 /* the register gets spilled after this inst */
3006 spill = -val -1;
3007 }
3008 val = mono_regstate_alloc_int (rs, src2_mask);
3009 if (val < 0)
3010 val = get_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
3011 rs->iassign [ins->sreg2] = val;
3012 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
3013 if (spill)
3014 create_spilled_store (cfg, spill, val, prev_sreg2, ins);
3015 }
3016 rs->isymbolic [val] = prev_sreg2;
3017 ins->sreg2 = val;
3018 } else {
3019 prev_sreg2 = -1;
3020 }
3021
3022 if (spec [MONO_INST_CLOB] == 'c') {
3023 int j, s;
3024 guint32 clob_mask = S390_CALLER_REGS;
3025 for (j = 0; j < MONO_MAX_IREGS; ++j) {
3026 s = 1 << j;
3027 if ((clob_mask & s) && !(rs->ifree_mask & s) && j != ins->sreg1) {
3028 //g_warning ("register %s busy at call site\n", mono_arch_regname (j));
3029 }
3030 }
3031 }
3032 tmp = tmp->next;
3033 }
3034 }
3035
3036 /*========================= End of Function ========================*/
3037
3038 /*------------------------------------------------------------------*/
3039 /* */
3040 /* Name - emit_float_to_int */
3041 /* */
3042 /* Function - Create instructions which will convert a floating */
3043 /* point value to integer. */
3044 /* */
3045 /*------------------------------------------------------------------*/
3046
3047 static guchar*
3048 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
3049 {
3050 /* sreg is a float, dreg is an integer reg. */
3051 if (is_signed) {
3052 s390_cfdbr (code, dreg, 5, sreg);
3053 switch (size) {
3054 case 1:
3055 s390_lhi (code, s390_r0, 0);
3056 s390_lhi (code, s390_r13, 0xff);
3057 s390_ltr (code, dreg, dreg);
3058 s390_jnl (code, 4);
3059 s390_lhi (code, s390_r0, 0x80);
3060 s390_nr (code, dreg, s390_r13);
3061 s390_or (code, dreg, s390_r0);
3062 break;
3063 }
3064 } else {
3065 s390_basr (code, s390_r13, 0);
3066 s390_j (code, 10);
3067 s390_llong (code, 0x41e0000000000000);
3068 s390_llong (code, 0x41f0000000000000);
3069 s390_ldr (code, s390_f15, sreg);
3070 s390_cdb (code, s390_f15, 0, s390_r13, 0);
3071 s390_jl (code, 10);
3072 s390_sdb (code, s390_f15, 0, s390_r13, 8);
3073 s390_cfdbr (code, dreg, 7, s390_f15);
3074 s390_j (code, 4);
3075 s390_cfdbr (code, dreg, 5, sreg);
3076 switch (size) {
3077 case 1:
3078 s390_lhi (code, s390_r0, 0xff);
3079 s390_nr (code, dreg, s390_r0);
3080 break;
3081 case 2:
3082 s390_lhi (code, s390_r0, -1);
3083 s390_srl (code, s390_r0, 0, 16);
3084 s390_nr (code, dreg, s390_r0);
3085 break;
3086 }
3087 }
3088 return code;
3089 }
3090
3091 /*========================= End of Function ========================*/
3092
3093 /*------------------------------------------------------------------*/
3094 /* */
3095 /* Name - mono_emit_stack_alloc */
3096 /* */
3097 /* Function - */
3098 /* */
3099 /*------------------------------------------------------------------*/
3100
3101 static unsigned char*
3102 mono_emit_stack_alloc (guchar *code, MonoInst* tree)
3103 {
3104 return code;
3105 }
3106
3107 /*========================= End of Function ========================*/
3108
3109 /*------------------------------------------------------------------*/
3110 /* */
3111 /* Name - mono_arch_output_basic_block */
3112 /* */
3113 /* Function - Perform the "real" work of emitting instructions */
3114 /* that will do the work of in the basic block. */
3115 /* */
3116 /*------------------------------------------------------------------*/
3117
3118 void
3119 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
3120 {
3121 MonoInst *ins;
3122 MonoCallInst *call;
3123 guint offset;
3124 guint8 *code = cfg->native_code + cfg->code_len;
3125 MonoInst *last_ins = NULL;
3126 guint last_offset = 0;
3127 int max_len, cpos;
3128 guint8 cond;
3129
3130 if (cfg->opt & MONO_OPT_PEEPHOLE)
3131 peephole_pass (cfg, bb);
3132
3133 /* we don't align basic blocks of loops on s390 */
3134
3135 if (cfg->verbose_level > 2)
3136 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
3137
3138 cpos = bb->max_offset;
3139
3140 if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
3141 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
3142 //g_assert (!mono_compile_aot);
3143 //cpos += 6;
3144 //if (bb->cil_code)
3145 // cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
3146 /* this is not thread save, but good enough */
3147 /* fixme: howto handle overflows? */
3148 //x86_inc_mem (code, &cov->data [bb->dfn].count);
3149 }
3150
3151 ins = bb->code;
3152 while (ins) {
3153 offset = code - cfg->native_code;
3154
3155 max_len = ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
3156
3157 if (offset > (cfg->code_size - max_len - 16)) {
3158 cfg->code_size *= 2;
3159 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
3160 code = cfg->native_code + offset;
3161 }
3162
3163 mono_debug_record_line_number (cfg, ins, offset);
3164
3165 switch (ins->opcode) {
3166 case OP_STOREI1_MEMBASE_IMM: {
3167 s390_lhi (code, s390_r0, ins->inst_imm);
3168 if (s390_is_uimm12(ins->inst_offset))
3169 s390_stc (code, s390_r0, 0, ins->inst_destbasereg, ins->inst_offset);
3170 else {
3171 s390_basr (code, s390_r13, 0);
3172 s390_j (code, 4);
3173 s390_word (code, ins->inst_offset);
3174 s390_l (code, s390_r13, 0, s390_r13, 4);
3175 s390_stc (code, s390_r0, s390_r13, ins->inst_destbasereg, 0);
3176 }
3177 }
3178 break;
3179 case OP_STOREI2_MEMBASE_IMM: {
3180 s390_lhi (code, s390_r0, ins->inst_imm);
3181 if (s390_is_uimm12(ins->inst_offset)) {
3182 s390_sth (code, s390_r0, 0, ins->inst_destbasereg, ins->inst_offset);
3183 } else {
3184 s390_basr (code, s390_r13, 0);
3185 s390_j (code, 4);
3186 s390_word (code, ins->inst_offset);
3187 s390_l (code, s390_r13, 0, s390_r13, 4);
3188 s390_sth (code, s390_r0, s390_r13, ins->inst_destbasereg, 0);
3189 }
3190 }
3191 break;
3192 case OP_STORE_MEMBASE_IMM:
3193 case OP_STOREI4_MEMBASE_IMM: {
3194 if (s390_is_uimm16(ins->inst_imm)) {
3195 s390_lhi (code, s390_r0, ins->inst_imm);
3196 } else {
3197 s390_basr (code, s390_r13, 0);
3198 s390_j (code, 4);
3199 s390_word (code, ins->inst_imm);
3200 s390_l (code, s390_r0, 0, s390_r13, 4);
3201 }
3202 if (s390_is_uimm12(ins->inst_offset)) {
3203 s390_st (code, s390_r0, 0, ins->inst_destbasereg, ins->inst_offset);
3204 } else {
3205 s390_basr (code, s390_r13, 0);
3206 s390_j (code, 4);
3207 s390_word (code, ins->inst_offset);
3208 s390_l (code, s390_r13, 0, s390_r13, 4);
3209 s390_st (code, s390_r0, s390_r13, ins->inst_destbasereg, 0);
3210 }
3211 }
3212 break;
3213 case OP_STOREI1_MEMBASE_REG: {
3214 if (s390_is_uimm12(ins->inst_offset)) {
3215 s390_stc (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3216 } else {
3217 s390_basr (code, s390_r13, 0);
3218 s390_j (code, 4);
3219 s390_word (code, ins->inst_offset);
3220 s390_l (code, s390_r13, 0, s390_r13, 4);
3221 s390_stc (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3222 }
3223 }
3224 break;
3225 case OP_STOREI2_MEMBASE_REG: {
3226 if (s390_is_uimm12(ins->inst_offset)) {
3227 s390_sth (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3228 } else {
3229 s390_basr (code, s390_r13, 0);
3230 s390_j (code, 4);
3231 s390_word (code, ins->inst_offset);
3232 s390_l (code, s390_r13, 0, s390_r13, 4);
3233 s390_sth (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3234 }
3235 }
3236 break;
3237 case OP_STORE_MEMBASE_REG:
3238 case OP_STOREI4_MEMBASE_REG: {
3239 if (s390_is_uimm12(ins->inst_offset)) {
3240 s390_st (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3241 } else {
3242 s390_basr (code, s390_r13, 0);
3243 s390_j (code, 4);
3244 s390_word (code, ins->inst_offset);
3245 s390_l (code, s390_r13, 0, s390_r13, 4);
3246 s390_st (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3247 }
3248 }
3249 break;
3250 case CEE_LDIND_I:
3251 case CEE_LDIND_I4:
3252 case CEE_LDIND_U4: {
3253 s390_basr (code, s390_r13, 0);
3254 s390_j (code, 4);
3255 s390_word (code, ins->inst_p0);
3256 s390_l (code, s390_r13, 0, s390_r13, 4);
3257 s390_l (code, ins->dreg, 0, s390_r13, 0);
3258 }
3259 break;
3260 case OP_LOADU4_MEM:
3261 g_assert_not_reached ();
3262 break;
3263 case OP_LOAD_MEMBASE:
3264 case OP_LOADI4_MEMBASE:
3265 case OP_LOADU4_MEMBASE: {
3266 if (s390_is_uimm12(ins->inst_offset))
3267 s390_l (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3268 else {
3269 if (s390_is_uimm16(ins->inst_offset)) {
3270 s390_lhi (code, s390_r13, ins->inst_offset);
3271 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3272 } else {
3273 s390_basr (code, s390_r13, 0);
3274 s390_j (code, 4);
3275 s390_word (code, ins->inst_offset);
3276 s390_l (code, s390_r13, 0, s390_r13, 4);
3277 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3278 }
3279 }
3280 }
3281 break;
3282 case OP_LOADU1_MEMBASE: {
3283 s390_lhi (code, s390_r0, 0);
3284 if (s390_is_uimm12(ins->inst_offset))
3285 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3286 else {
3287 s390_basr (code, s390_r13, 0);
3288 s390_j (code, 4);
3289 s390_word (code, ins->inst_offset);
3290 s390_l (code, s390_r13, 0, s390_r13, 4);
3291 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3292 }
3293 s390_lr (code, ins->dreg, s390_r0);
3294 }
3295 break;
3296 case OP_LOADI1_MEMBASE: {
3297 s390_lhi (code, s390_r0, 0);
3298 if (s390_is_uimm12(ins->inst_offset))
3299 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3300 else {
3301 s390_basr (code, s390_r13, 0);
3302 s390_j (code, 4);
3303 s390_word (code, ins->inst_offset);
3304 s390_l (code, s390_r13, 0, s390_r13, 4);
3305 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3306 }
3307 s390_lhi (code, s390_r13, 0x80);
3308 s390_nr (code, s390_r13, s390_r0);
3309 s390_jz (code, 5);
3310 s390_lhi (code, s390_r13, 0xff00);
3311 s390_or (code, s390_r0, s390_r13);
3312 s390_lr (code, ins->dreg, s390_r0);
3313 }
3314 break;
3315 case OP_LOADU2_MEMBASE: {
3316 s390_lhi (code, s390_r0, 0);
3317 if (s390_is_uimm12(ins->inst_offset))
3318 s390_icm (code, s390_r0, 3, ins->inst_basereg, ins->inst_offset);
3319 else {
3320 s390_basr (code, s390_r13, 0);
3321 s390_j (code, 4);
3322 s390_word (code, ins->inst_offset);
3323 s390_l (code, s390_r13, 0, s390_r13, 4);
3324 s390_ar (code, s390_r13, ins->inst_basereg);
3325 s390_icm (code, s390_r0, 3, s390_r13, 0);
3326 }
3327 s390_lr (code, ins->dreg, s390_r0);
3328 }
3329 break;
3330 case OP_LOADI2_MEMBASE: {
3331 s390_lhi (code, s390_r0, 0);
3332 if (s390_is_uimm12(ins->inst_offset))
3333 s390_lh (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3334 else {
3335 s390_basr (code, s390_r13, 0);
3336 s390_j (code, 4);
3337 s390_word (code, ins->inst_offset);
3338 s390_l (code, s390_r13, 0, s390_r13, 4);
3339 s390_lh (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3340 }
3341 s390_lr (code, ins->dreg, s390_r0);
3342 }
3343 break;
3344 case CEE_CONV_I1: {
3345 s390_lhi (code, s390_r0, 0x80);
3346 if (ins->dreg != ins->sreg1) {
3347 s390_lr (code, ins->dreg, ins->sreg1);
3348 }
3349 s390_nr (code, s390_r0, ins->sreg1);
3350 s390_jz (code, 7);
3351 s390_lhi (code, s390_r13, -1);
3352 s390_sll (code, s390_r13, 0, 8);
3353 s390_or (code, ins->dreg, s390_r13);
3354 }
3355 break;
3356 case CEE_CONV_I2: {
3357 s390_lhi (code, s390_r0, 0x80);
3358 s390_sll (code, s390_r0, 0, 8);
3359 if (ins->dreg != ins->sreg1) {
3360 s390_lr (code, ins->dreg, ins->sreg1);
3361 }
3362 s390_nr (code, s390_r0, ins->sreg1);
3363 s390_jz (code, 7);
3364 s390_lhi (code, s390_r13, -1);
3365 s390_sll (code, s390_r13, 0, 16);
3366 s390_or (code, ins->dreg, s390_r13);
3367 }
3368 break;
3369 case CEE_CONV_U1: {
3370 s390_lhi (code, s390_r0, 0xff);
3371 if (ins->dreg != ins->sreg1) {
3372 s390_lr (code, ins->dreg, ins->sreg1);
3373 }
3374 s390_nr (code, ins->dreg, s390_r0);
3375 }
3376 break;
3377 case CEE_CONV_U2: {
3378 s390_lhi (code, s390_r0, -1);
3379 s390_sll (code, s390_r0, 0, 16);
3380 s390_srl (code, s390_r0, 0, 16);
3381 if (ins->dreg != ins->sreg1) {
3382 s390_lr (code, ins->dreg, ins->sreg1);
3383 }
3384 s390_nr (code, ins->dreg, s390_r0);
3385 }
3386 break;
3387 case OP_COMPARE: {
3388 if ((ins->next) &&
3389 ((ins->next->opcode >= CEE_BNE_UN) &&
3390 (ins->next->opcode <= CEE_BLT_UN)) ||
3391 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3392 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3393 ((ins->next->opcode == OP_CLT_UN) ||
3394 (ins->next->opcode == OP_CGT_UN)))
3395 s390_clr (code, ins->sreg1, ins->sreg2);
3396 else
3397 s390_cr (code, ins->sreg1, ins->sreg2);
3398 }
3399 break;
3400 case OP_COMPARE_IMM: {
3401 if (s390_is_uimm16 (ins->inst_imm)) {
3402 s390_lhi (code, s390_r0, ins->inst_imm);
3403 if ((ins->next) &&
3404 ((ins->next->opcode >= CEE_BNE_UN) &&
3405 (ins->next->opcode <= CEE_BLT_UN)) ||
3406 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3407 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3408 ((ins->next->opcode == OP_CLT_UN) ||
3409 (ins->next->opcode == OP_CGT_UN)))
3410 s390_clr (code, ins->sreg1, s390_r0);
3411 else
3412 s390_cr (code, ins->sreg1, s390_r0);
3413 }
3414 else {
3415 s390_basr (code, s390_r13, 0);
3416 s390_j (code, 4);
3417 s390_word (code, ins->inst_imm);
3418 if ((ins->next) &&
3419 ((ins->next->opcode >= CEE_BNE_UN) &&
3420 (ins->next->opcode <= CEE_BLT_UN)) ||
3421 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3422 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3423 ((ins->next->opcode == OP_CLT_UN) &&
3424 (ins->next->opcode == OP_CGT_UN)))
3425 s390_cl (code, ins->sreg1, 0, s390_r13, 4);
3426 else
3427 s390_c (code, ins->sreg1, 0, s390_r13, 4);
3428 }
3429 }
3430 break;
3431 case OP_X86_TEST_NULL: {
3432 s390_ltr (code, ins->sreg1, ins->sreg1);
3433 }
3434 break;
3435 case CEE_BREAK: {
3436 s390_break (code);
3437 }
3438 break;
3439 case OP_ADDCC: {
3440 if (ins->dreg != ins->sreg1) {
3441 s390_lr (code, ins->dreg, ins->sreg1);
3442 }
3443 s390_alr (code, ins->dreg, ins->sreg2);
3444 }
3445 break;
3446 case CEE_ADD: {
3447 if (ins->dreg != ins->sreg1) {
3448 s390_lr (code, ins->dreg, ins->sreg1);
3449 }
3450 s390_ar (code, ins->dreg, ins->sreg2);
3451 }
3452 break;
3453 case OP_ADC: {
3454 if (ins->dreg != ins->sreg1) {
3455 s390_lr (code, ins->dreg, ins->sreg1);
3456 }
3457 s390_alcr (code, ins->dreg, ins->sreg2);
3458 }
3459 break;
3460 case OP_ADDCC_IMM:
3461 case OP_ADD_IMM: {
3462 if ((ins->next) &&
3463 (ins->next->opcode == OP_ADC_IMM)) {
3464 s390_basr (code, s390_r13, 0);
3465 s390_j (code, 4);
3466 s390_word (code, ins->inst_imm);
3467 if (ins->dreg != ins->sreg1) {
3468 s390_lr (code, ins->dreg, ins->sreg1);
3469 }
3470 s390_al (code, ins->dreg, 0, s390_r13, 4);
3471 } else {
3472 if (s390_is_uimm16 (ins->inst_imm)) {
3473 if (ins->dreg != ins->sreg1) {
3474 s390_lr (code, ins->dreg, ins->sreg1);
3475 }
3476 s390_ahi (code, ins->dreg, ins->inst_imm);
3477 } else {
3478 s390_basr (code, s390_r13, 0);
3479 s390_j (code, 4);
3480 s390_word (code, ins->inst_imm);
3481 if (ins->dreg != ins->sreg1) {
3482 s390_lr (code, ins->dreg, ins->sreg1);
3483 }
3484 s390_a (code, ins->dreg, 0, s390_r13, 4);
3485 }
3486 }
3487 }
3488 break;
3489 case OP_ADC_IMM: {
3490 if (s390_is_uimm16 (ins->inst_imm)) {
3491 if (ins->dreg != ins->sreg1) {
3492 s390_lr (code, ins->dreg, ins->sreg1);
3493 }
3494 s390_lhi (code, s390_r0, ins->inst_imm);
3495 s390_alcr (code, ins->dreg, s390_r0);
3496 } else {
3497 s390_basr (code, s390_r13, 0);
3498 s390_j (code, 4);
3499 s390_word (code, ins->inst_imm);
3500 s390_l (code, s390_r13, 0, s390_r13, 4);
3501 s390_alcr (code, ins->dreg, s390_r13);
3502 }
3503 }
3504 break;
3505 case CEE_ADD_OVF: {
3506 if (ins->dreg != ins->sreg1) {
3507 s390_lr (code, ins->dreg, ins->sreg1);
3508 }
3509 s390_ar (code, ins->dreg, ins->sreg2);
3510 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3511 }
3512 break;
3513 case CEE_ADD_OVF_UN: {
3514 if (ins->dreg != ins->sreg1) {
3515 s390_lr (code, ins->dreg, ins->sreg1);
3516 }
3517 s390_alr (code, ins->dreg, ins->sreg2);
3518 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3519 }
3520 break;
3521 case OP_ADD_OVF_CARRY: {
3522 if (ins->dreg != ins->sreg1) {
3523 s390_lr (code, ins->dreg, ins->sreg1);
3524 }
3525 s390_lhi (code, s390_r0, 0);
3526 s390_lr (code, s390_r1, s390_r0);
3527 s390_alcr (code, s390_r0, s390_r1);
3528 s390_ar (code, ins->dreg, ins->sreg2);
3529 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3530 s390_ar (code, ins->dreg, s390_r0);
3531 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3532 }
3533 break;
3534 case OP_ADD_OVF_UN_CARRY: {
3535 if (ins->dreg != ins->sreg1) {
3536 s390_lr (code, ins->dreg, ins->sreg1);
3537 }
3538 s390_alcr (code, ins->dreg, ins->sreg2);
3539 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3540 }
3541 break;
3542 case OP_SUBCC: {
3543 if (ins->dreg != ins->sreg1) {
3544 s390_lr (code, ins->dreg, ins->sreg1);
3545 }
3546 s390_slr (code, ins->dreg, ins->sreg2);
3547 }
3548 break;
3549 case CEE_SUB: {
3550 if (ins->dreg != ins->sreg1) {
3551 s390_lr (code, ins->dreg, ins->sreg1);
3552 }
3553 s390_sr (code, ins->dreg, ins->sreg2);
3554 }
3555 break;
3556 case OP_SBB: {
3557 if (ins->dreg != ins->sreg1) {
3558 s390_lr (code, ins->dreg, ins->sreg1);
3559 }
3560 s390_slbr (code, ins->dreg, ins->sreg2);
3561 }
3562 break;
3563 case OP_SUBCC_IMM: {
3564 if (s390_is_uimm16 (-ins->inst_imm)) {
3565 if (ins->dreg != ins->sreg1) {
3566 s390_lr (code, ins->dreg, ins->sreg1);
3567 }
3568 s390_ahi (code, ins->dreg, -ins->inst_imm);
3569 } else {
3570 s390_basr (code, s390_r13, 0);
3571 s390_j (code, 4);
3572 s390_word (code, ins->inst_imm);
3573 if (ins->dreg != ins->sreg1) {
3574 s390_lr (code, ins->dreg, ins->sreg1);
3575 }
3576 s390_sl (code, ins->dreg, 0, s390_r13, 4);
3577 }
3578 }
3579 break;
3580 case OP_SUB_IMM: {
3581 if (s390_is_uimm16 (-ins->inst_imm)) {
3582 if (ins->dreg != ins->sreg1) {
3583 s390_lr (code, ins->dreg, ins->sreg1);
3584 }
3585 s390_ahi (code, ins->dreg, -ins->inst_imm);
3586 } else {
3587 s390_basr (code, s390_r13, 0);
3588 s390_j (code, 4);
3589 s390_word (code, ins->inst_imm);
3590 if (ins->dreg != ins->sreg1) {
3591 s390_lr (code, ins->dreg, ins->sreg1);
3592 }
3593 s390_s (code, ins->dreg, 0, s390_r13, 4);
3594 }
3595 }
3596 break;
3597 case OP_SBB_IMM: {
3598 if (ins->dreg != ins->sreg1) {
3599 s390_lr (code, ins->dreg, ins->sreg1);
3600 }
3601 if (s390_is_uimm16 (-ins->inst_imm)) {
3602 s390_lhi (code, s390_r0, ins->inst_imm);
3603 s390_slbr (code, ins->dreg, s390_r0);
3604 } else {
3605 s390_basr (code, s390_r13, 0);
3606 s390_j (code, 4);
3607 s390_word (code, ins->inst_imm);
3608 s390_slb (code, ins->dreg, 0, s390_r13, 4);
3609 }
3610 }
3611 break;
3612 case CEE_SUB_OVF: {
3613 if (ins->dreg != ins->sreg1) {
3614 s390_lr (code, ins->dreg, ins->sreg1);
3615 }
3616 s390_sr (code, ins->dreg, ins->sreg2);
3617 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3618 }
3619 break;
3620 case CEE_SUB_OVF_UN: {
3621 if (ins->dreg != ins->sreg1) {
3622 s390_lr (code, ins->dreg, ins->sreg1);
3623 }
3624 s390_slr (code, ins->dreg, ins->sreg2);
3625 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3626 }
3627 break;
3628 case OP_SUB_OVF_CARRY: {
3629 if (ins->dreg != ins->sreg1) {
3630 s390_lr (code, ins->dreg, ins->sreg1);
3631 }
3632 s390_lhi (code, s390_r0, 0);
3633 s390_lr (code, s390_r1, s390_r0);
3634 s390_slbr (code, s390_r0, s390_r1);
3635 s390_sr (code, ins->dreg, ins->sreg2);
3636 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3637 s390_ar (code, ins->dreg, s390_r0);
3638 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3639 }
3640 break;
3641 case OP_SUB_OVF_UN_CARRY: {
3642 if (ins->dreg != ins->sreg1) {
3643 s390_lr (code, ins->dreg, ins->sreg1);
3644 }
3645 s390_slbr (code, ins->dreg, ins->sreg2);
3646 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3647 }
3648 break;
3649 case CEE_AND: {
3650 if (ins->sreg1 == ins->dreg) {
3651 s390_nr (code, ins->dreg, ins->sreg2);
3652 }
3653 else {
3654 if (ins->sreg2 == ins->dreg) {
3655 s390_nr (code, ins->dreg, ins->sreg1);
3656 }
3657 else {
3658 s390_lr (code, ins->dreg, ins->sreg1);
3659 s390_nr (code, ins->dreg, ins->sreg2);
3660 }
3661 }
3662 }
3663 break;
3664 case OP_AND_IMM: {
3665 if (s390_is_uimm16 (ins->inst_imm)) {
3666 s390_lhi (code, s390_r0, ins->inst_imm);
3667 if (ins->dreg != ins->sreg1) {
3668 s390_lr (code, ins->dreg, ins->sreg1);
3669 }
3670 s390_nr (code, ins->dreg, s390_r0);
3671 } else {
3672 s390_basr (code, s390_r13, 0);
3673 s390_j (code, 4);
3674 s390_word (code, ins->inst_imm);
3675 if (ins->dreg != ins->sreg1) {
3676 s390_lr (code, ins->dreg, ins->sreg1);
3677 }
3678 s390_n (code, ins->dreg, 0, s390_r13, 4);
3679 }
3680 }
3681 break;
3682 case CEE_DIV: {
3683 s390_lr (code, s390_r0, ins->sreg1);
3684 s390_srda (code, s390_r0, 0, 32);
3685 s390_dr (code, s390_r0, ins->sreg2);
3686 s390_lr (code, ins->dreg, s390_r1);
3687 }
3688 break;
3689 case CEE_DIV_UN: {
3690 s390_lr (code, s390_r0, ins->sreg1);
3691 s390_srdl (code, s390_r0, 0, 32);
3692 s390_dlr (code, s390_r0, ins->sreg2);
3693 s390_lr (code, ins->dreg, s390_r1);
3694 }
3695 break;
3696 case OP_DIV_IMM: {
3697 if (s390_is_uimm16 (ins->inst_imm)) {
3698 s390_lhi (code, s390_r13, ins->inst_imm);
3699 s390_lr (code, s390_r0, ins->sreg1);
3700 } else {
3701 s390_basr (code, s390_r13, 0);
3702 s390_j (code, 4);
3703 s390_word (code, ins->inst_imm);
3704 s390_lr (code, s390_r0, ins->sreg1);
3705 s390_l (code, s390_r13, 0, s390_r13, 4);
3706 }
3707 s390_srda (code, s390_r0, 0, 32);
3708 s390_dr (code, s390_r0, s390_r13);
3709 s390_lr (code, ins->dreg, s390_r1);
3710 }
3711 break;
3712 case CEE_REM: {
3713 s390_lr (code, s390_r0, ins->sreg1);
3714 s390_srda (code, s390_r0, 0, 32);
3715 s390_dr (code, s390_r0, ins->sreg2);
3716 s390_lr (code, ins->dreg, s390_r0);
3717 break;
3718 case CEE_REM_UN:
3719 s390_lr (code, s390_r0, ins->sreg1);
3720 s390_srdl (code, s390_r0, 0, 32);
3721 s390_dlr (code, s390_r0, ins->sreg2);
3722 s390_lr (code, ins->dreg, s390_r0);
3723 }
3724 break;
3725 case OP_REM_IMM: {
3726 if (s390_is_uimm16 (ins->inst_imm)) {
3727 s390_lhi (code, s390_r13, ins->inst_imm);
3728 s390_lr (code, s390_r0, ins->sreg1);
3729 } else {
3730 s390_basr (code, s390_r13, 0);
3731 s390_j (code, 4);
3732 s390_word (code, ins->inst_imm);
3733 s390_lr (code, s390_r0, ins->sreg1);
3734 s390_l (code, s390_r13, 0, s390_r13, 4);
3735 }
3736 s390_srda (code, s390_r0, 0, 32);
3737 s390_dr (code, s390_r0, s390_r13);
3738 s390_lr (code, ins->dreg, s390_r0);
3739 }
3740 break;
3741 case CEE_OR: {
3742 if (ins->sreg1 == ins->dreg) {
3743 s390_or (code, ins->dreg, ins->sreg2);
3744 }
3745 else {
3746 if (ins->sreg2 == ins->dreg) {
3747 s390_or (code, ins->dreg, ins->sreg1);
3748 }
3749 else {
3750 s390_lr (code, ins->dreg, ins->sreg1);
3751 s390_or (code, ins->dreg, ins->sreg2);
3752 }
3753 }
3754 }
3755 break;
3756 case OP_OR_IMM: {
3757 if (s390_is_uimm16 (ins->inst_imm)) {
3758 s390_lhi (code, s390_r0, ins->inst_imm);
3759 if (ins->dreg != ins->sreg1) {
3760 s390_lr (code, ins->dreg, ins->sreg1);
3761 }
3762 s390_or (code, ins->dreg, s390_r0);
3763 } else {
3764 s390_basr (code, s390_r13, 0);
3765 s390_j (code, 4);
3766 s390_word (code, ins->inst_imm);
3767 if (ins->dreg != ins->sreg1) {
3768 s390_lr (code, ins->dreg, ins->sreg1);
3769 }
3770 s390_o (code, ins->dreg, 0, s390_r13, 4);
3771 }
3772 }
3773 break;
3774 case CEE_XOR: {
3775 if (ins->sreg1 == ins->dreg) {
3776 s390_xr (code, ins->dreg, ins->sreg2);
3777 }
3778 else {
3779 if (ins->sreg2 == ins->dreg) {
3780 s390_xr (code, ins->dreg, ins->sreg1);
3781 }
3782 else {
3783 s390_lr (code, ins->dreg, ins->sreg1);
3784 s390_xr (code, ins->dreg, ins->sreg2);
3785 }
3786 }
3787 }
3788 break;
3789 case OP_XOR_IMM: {
3790 if (s390_is_uimm16 (ins->inst_imm)) {
3791 s390_lhi (code, s390_r0, ins->inst_imm);
3792 if (ins->dreg != ins->sreg1) {
3793 s390_lr (code, ins->dreg, ins->sreg1);
3794 }
3795 s390_xr (code, ins->dreg, s390_r0);
3796 } else {
3797 s390_basr (code, s390_r13, 0);
3798 s390_j (code, 4);
3799 s390_word (code, ins->inst_imm);
3800 if (ins->dreg != ins->sreg1) {
3801 s390_lr (code, ins->dreg, ins->sreg1);
3802 }
3803 s390_x (code, ins->dreg, 0, s390_r13, 4);
3804 }
3805 }
3806 break;
3807 case CEE_SHL: {
3808 if (ins->sreg1 != ins->dreg) {
3809 s390_lr (code, ins->dreg, ins->sreg1);
3810 }
3811 s390_sll (code, ins->dreg, ins->sreg2, 0);
3812 }
3813 break;
3814 case OP_SHL_IMM: {
3815 if (ins->sreg1 != ins->dreg) {
3816 s390_lr (code, ins->dreg, ins->sreg1);
3817 }
3818 s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3819 }
3820 break;
3821 case CEE_SHR: {
3822 if (ins->sreg1 != ins->dreg) {
3823 s390_lr (code, ins->dreg, ins->sreg1);
3824 }
3825 s390_sra (code, ins->dreg, ins->sreg2, 0);
3826 }
3827 break;
3828 case OP_SHR_IMM: {
3829 if (ins->sreg1 != ins->dreg) {
3830 s390_lr (code, ins->dreg, ins->sreg1);
3831 }
3832 s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3833 }
3834 break;
3835 case OP_SHR_UN_IMM: {
3836 if (ins->sreg1 != ins->dreg) {
3837 s390_lr (code, ins->dreg, ins->sreg1);
3838 }
3839 s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3840 }
3841 break;
3842 case CEE_SHR_UN: {
3843 if (ins->sreg1 != ins->dreg) {
3844 s390_lr (code, ins->dreg, ins->sreg1);
3845 }
3846 s390_srl (code, ins->dreg, ins->sreg2, 0);
3847 }
3848 break;
3849 case CEE_NOT: {
3850 if (ins->sreg1 != ins->dreg) {
3851 s390_lr (code, ins->dreg, ins->sreg1);
3852 }
3853 s390_lhi (code, s390_r0, -1);
3854 s390_xr (code, ins->dreg, s390_r0);
3855 }
3856 break;
3857 case CEE_NEG: {
3858 s390_lcr (code, ins->dreg, ins->sreg1);
3859 }
3860 break;
3861 case CEE_MUL: {
3862 if (ins->sreg1 == ins->dreg) {
3863 s390_msr (code, ins->dreg, ins->sreg2);
3864 }
3865 else {
3866 if (ins->sreg2 == ins->dreg) {
3867 s390_msr (code, ins->dreg, ins->sreg1);
3868 }
3869 else {
3870 s390_lr (code, ins->dreg, ins->sreg1);
3871 s390_msr (code, ins->dreg, ins->sreg2);
3872 }
3873 }
3874 }
3875 break;
3876 case OP_MUL_IMM: {
3877 if (s390_is_uimm16 (ins->inst_imm)) {
3878 s390_lhi (code, s390_r13, ins->inst_imm);
3879 } else {
3880 s390_basr (code, s390_r13, 0);
3881 s390_j (code, 4);
3882 s390_word (code, ins->inst_imm);
3883 if (ins->dreg != ins->sreg1) {
3884 s390_lr (code, ins->dreg, ins->sreg1);
3885 }
3886 s390_l (code, s390_r13, 0, s390_r13, 4);
3887 }
3888 s390_msr (code, ins->dreg, s390_r13);
3889 }
3890 break;
3891 case CEE_MUL_OVF: {
3892 short int *o[2];
3893 s390_ltr (code, s390_r1, ins->sreg1);
3894 s390_jz (code, 0); CODEPTR(code, o[0]);
3895 s390_ltr (code, s390_r0, ins->sreg2);
3896 s390_jnz (code, 6);
3897 s390_lhi (code, s390_r1, 0);
3898 s390_j (code, 0); CODEPTR(code, o[1]);
3899 s390_xr (code, s390_r0, s390_r1);
3900 s390_msr (code, s390_r1, ins->sreg2);
3901 s390_xr (code, s390_r0, s390_r1);
3902 s390_srl (code, s390_r0, 0, 31);
3903 s390_ltr (code, s390_r0, s390_r0);
3904 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3905 PTRSLOT (code, o[0]);
3906 PTRSLOT (code, o[1]);
3907 s390_lr (code, ins->dreg, s390_r1);
3908 }
3909 break;
3910 case CEE_MUL_OVF_UN: {
3911 s390_lhi (code, s390_r0, 0);
3912 s390_lr (code, s390_r1, ins->sreg1);
3913 s390_mlr (code, s390_r0, ins->sreg2);
3914 s390_ltr (code, s390_r0, s390_r0);
3915 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3916 s390_lr (code, ins->dreg, s390_r1);
3917 }
3918 break;
3919 case OP_LMUL: {
3920 s390_l (code, s390_r0, 0, ins->sreg1, 4);
3921 s390_srda (code, s390_r0, 0, 32);
3922 s390_m (code, s390_r0, 0, ins->sreg2, 4);
3923 s390_l (code, s390_r0, 0, ins->sreg1, 4);
3924 s390_srl (code, s390_r0, 0, 31);
3925 s390_a (code, s390_r0, 0, ins->sreg1, 0);
3926 s390_l (code, s390_r13, 0, ins->sreg2, 0);
3927 s390_srl (code, s390_r13, 0, 31);
3928 s390_ms (code, s390_r13, 0, ins->sreg1, 4);
3929 s390_ar (code, s390_r0, s390_r13);
3930 s390_st (code, s390_r0, 0, ins->dreg, 0);
3931 s390_st (code, s390_r1, 0, ins->dreg, 4);
3932 }
3933 break;
3934 case OP_ICONST:
3935 case OP_SETREGIMM: {
3936 if (s390_is_uimm16(ins->inst_c0)) {
3937 s390_lhi (code, ins->dreg, ins->inst_c0);
3938 } else {
3939 s390_basr (code, s390_r13, 0);
3940 s390_j (code, 4);
3941 s390_word (code, ins->inst_c0);
3942 s390_l (code, ins->dreg, 0, s390_r13, 4);
3943 }
3944 }
3945 break;
3946 case OP_AOTCONST: {
3947 s390_basr (code, s390_r13, 0);
3948 s390_j (code, 4);
3949 mono_add_patch_info (cfg, code - cfg->native_code,
3950 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3951 s390_word (code, 0);
3952 s390_l (code,ins->dreg, 0, s390_r13, 4);
3953 }
3954 break;
3955 case CEE_CONV_I4:
3956 case CEE_CONV_U4:
3957 case OP_MOVE:
3958 case OP_SETREG: {
3959 if (ins->dreg != ins->sreg1) {
3960 s390_lr (code, ins->dreg, ins->sreg1);
3961 }
3962 }
3963 break;
3964 case OP_SETLRET: {
3965 int saved = ins->sreg1;
3966 if (ins->sreg1 == s390_r2) {
3967 s390_lr (code, s390_r0, ins->sreg1);
3968 saved = s390_r0;
3969 }
3970 if (ins->sreg2 != s390_r2)
3971 s390_lr (code, s390_r2, ins->sreg2);
3972 if (saved != s390_r3)
3973 s390_lr (code, s390_r3, saved);
3974 break;
3975 }
3976 case OP_SETFREG:
3977 case OP_FMOVE: {
3978 if (ins->dreg != ins->sreg1) {
3979 s390_ldr (code, ins->dreg, ins->sreg1);
3980 }
3981 }
3982 break;
3983 case OP_S390_SETF4RET: {
3984 s390_ledbr (code, ins->dreg, ins->sreg1);
3985 }
3986 break;
3987 case OP_TLS_GET: {
3988 if (s390_is_uimm16 (ins->inst_offset)) {
3989 s390_lhi (code, s390_r13, ins->inst_offset);
3990 } else {
3991 s390_bras (code, s390_r13, 0);
3992 s390_j (code, 4);
3993 s390_word (code, ins->inst_offset);
3994 s390_l (code, s390_r13, 0, s390_r13, 4);
3995 }
3996 s390_ear (code, s390_r1, 0);
3997 s390_l (code, ins->dreg, s390_r13, s390_r1, 0);
3998 }
3999 break;
4000 case OP_FCONV_TO_R4: {
4001 if ((ins->next) &&
4002 (ins->next->opcode != OP_STORER4_MEMBASE_REG))
4003 s390_ledbr (code, ins->dreg, ins->sreg1);
4004 }
4005 break;
4006 case CEE_JMP: {
4007 int iParm, fParm, pOffset;
4008 if (cfg->method->save_lmf)
4009 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
4010
4011 if (cfg->flags & MONO_CFG_HAS_TAIL) {
4012 pOffset = S390_PARM_SAVE_OFFSET;
4013 s390_l (code, s390_r13, 0, STK_BASE, 0);
4014 for (iParm = s390_r2;
4015 iParm <= s390_r5;
4016 iParm++, pOffset+sizeof(gint32)) {
4017 if (cfg->used_int_regs & (1 << iParm))
4018 s390_l (code, iParm, 0, s390_r13, pOffset);
4019 }
4020 pOffset = S390_FLOAT_SAVE_OFFSET;
4021 for (fParm = 0;
4022 fParm < 4;
4023 fParm++, pOffset+sizeof(double))
4024 s390_ld (code, fParm, 0, s390_r13, pOffset);
4025 }
4026
4027 code = backUpStackPtr(cfg, code);
4028 s390_l (code, s390_r14, 0, STK_BASE, S390_RET_ADDR_OFFSET);
4029 mono_add_patch_info (cfg, code - cfg->native_code,
4030 MONO_PATCH_INFO_METHOD_JUMP,
4031 ins->inst_p0);
4032 s390_jcl (code, S390_CC_UN, 0);
4033 }
4034 break;
4035 case OP_CHECK_THIS: {
4036 /* ensure ins->sreg1 is not NULL */
4037 s390_icm (code, s390_r0, 15, ins->sreg1, 0);
4038 }
4039 break;
4040 case OP_ARGLIST: {
4041 int offset = cfg->sig_cookie + cfg->stack_usage;
4042
4043 if (s390_is_uimm16 (offset))
4044 s390_lhi (code, s390_r0, offset);
4045 else {
4046 s390_basr (code, s390_r13, 0);
4047 s390_j (code, 4);
4048 s390_word (code, offset);
4049 s390_l (code, s390_r0, 0, s390_r13, 0);
4050 }
4051 s390_ar (code, s390_r0, cfg->frame_reg);
4052 s390_st (code, s390_r0, 0, ins->sreg1, 0);
4053 }
4054 break;
4055 case OP_FCALL: {
4056 call = (MonoCallInst*)ins;
4057 if (ins->flags & MONO_INST_HAS_METHOD)
4058 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD,
4059 call->method);
4060 else
4061 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS,
4062 call->fptr);
4063 s390_brasl (code, s390_r14, 0);
4064 if (call->signature->ret->type == MONO_TYPE_R4)
4065 s390_ldebr (code, s390_f0, s390_f0);
4066 }
4067 break;
4068 case OP_LCALL:
4069 case OP_VCALL:
4070 case OP_VOIDCALL:
4071 case CEE_CALL: {
4072 call = (MonoCallInst*)ins;
4073 if (ins->flags & MONO_INST_HAS_METHOD)
4074 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD, call->method);
4075 else
4076 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS, call->fptr);
4077 s390_brasl (code, s390_r14, 0);
4078 }
4079 break;
4080 case OP_FCALL_REG: {
4081 call = (MonoCallInst*)ins;
4082 s390_lr (code, s390_r1, ins->sreg1);
4083 s390_basr (code, s390_r14, s390_r1);
4084 if (call->signature->ret->type == MONO_TYPE_R4)
4085 s390_ldebr (code, s390_f0, s390_f0);
4086 }
4087 break;
4088 case OP_LCALL_REG:
4089 case OP_VCALL_REG:
4090 case OP_VOIDCALL_REG:
4091 case OP_CALL_REG: {
4092 s390_lr (code, s390_r1, ins->sreg1);
4093 s390_basr (code, s390_r14, s390_r1);
4094 }
4095 break;
4096 case OP_FCALL_MEMBASE: {
4097 call = (MonoCallInst*)ins;
4098 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
4099 s390_basr (code, s390_r14, s390_r1);
4100 if (call->signature->ret->type == MONO_TYPE_R4)
4101 s390_ldebr (code, s390_f0, s390_f0);
4102 }
4103 break;
4104 case OP_LCALL_MEMBASE:
4105 case OP_VCALL_MEMBASE:
4106 case OP_VOIDCALL_MEMBASE:
4107 case OP_CALL_MEMBASE: {
4108 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
4109 s390_basr (code, s390_r14, s390_r1);
4110 }
4111 break;
4112 case OP_OUTARG:
4113 g_assert_not_reached ();
4114 break;
4115 case OP_LOCALLOC: {
4116 int alloca_skip = S390_MINIMAL_STACK_SIZE + cfg->param_area +
4117 S390_STACK_ALIGNMENT - 1;
4118 int area_offset = S390_ALIGN(alloca_skip, S390_STACK_ALIGNMENT);
4119 s390_lr (code, s390_r1, ins->sreg1);
4120 if (ins->flags & MONO_INST_INIT)
4121 s390_lr (code, s390_r0, ins->sreg1);
4122 s390_ahi (code, s390_r1, 14);
4123 s390_srl (code, s390_r1, 0, 3);
4124 s390_sll (code, s390_r1, 0, 3);
4125 s390_l (code, s390_r13, 0, STK_BASE, 0);
4126 s390_lcr (code, s390_r1, s390_r1);
4127 s390_la (code, STK_BASE, STK_BASE, s390_r1, 0);
4128 s390_st (code, s390_r13, 0, STK_BASE, 0);
4129 s390_la (code, ins->dreg, 0, STK_BASE, area_offset);
4130 s390_srl (code, ins->dreg, 0, 3);
4131 s390_sll (code, ins->dreg, 0, 3);
4132 if (ins->flags & MONO_INST_INIT) {
4133 s390_lr (code, s390_r1, s390_r0);
4134 s390_lr (code, s390_r0, ins->dreg);
4135 s390_lr (code, s390_r14, s390_r12);
4136 s390_lhi (code, s390_r13, 0);
4137 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
4138 s390_jo (code, -2);
4139 s390_lr (code, s390_r12, s390_r14);
4140 }
4141 }
4142 break;
4143 case CEE_RET: {
4144 s390_br (code, s390_r14);
4145 }
4146 break;
4147 case CEE_THROW: {
4148 s390_lr (code, s390_r2, ins->sreg1);
4149 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
4150 (gpointer)"mono_arch_throw_exception");
4151 s390_brasl (code, s390_r14, 0);
4152 }
4153 break;
4154 case OP_RETHROW: {
4155 s390_lr (code, s390_r2, ins->sreg1);
4156 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
4157 (gpointer)"mono_arch_rethrow_exception");
4158 s390_brasl (code, s390_r14, 0);
4159 }
4160 break;
4161 case OP_START_HANDLER: {
4162 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4163 s390_st (code, s390_r14, 0,
4164 ins->inst_left->inst_basereg,
4165 ins->inst_left->inst_offset);
4166 } else {
4167 s390_basr (code, s390_r13, 0);
4168 s390_j (code, 4);
4169 s390_word (code, ins->inst_left->inst_offset);
4170 s390_l (code, s390_r13, 0, s390_r13, 4);
4171 s390_st (code, s390_r14, s390_r13,
4172 ins->inst_left->inst_basereg, 0);
4173 }
4174 }
4175 break;
4176 case OP_ENDFILTER: {
4177 if (ins->sreg1 != s390_r2)
4178 s390_lr (code, s390_r2, ins->sreg1);
4179 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4180 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg,
4181 ins->inst_left->inst_offset);
4182 } else {
4183 s390_basr (code, s390_r13, 0);
4184 s390_j (code, 4);
4185 s390_word (code, ins->inst_left->inst_offset);
4186 s390_l (code, s390_r13, 0, s390_r13, 4);
4187 s390_l (code, s390_r14, s390_r13,
4188 ins->inst_left->inst_basereg, 0);
4189 }
4190 s390_br (code, s390_r14);
4191 }
4192 break;
4193 case CEE_ENDFINALLY: {
4194 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4195 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg,
4196 ins->inst_left->inst_offset);
4197 } else {
4198 s390_basr (code, s390_r13, 0);
4199 s390_j (code, 4);
4200 s390_word (code, ins->inst_left->inst_offset);
4201 s390_l (code, s390_r13, 0, s390_r13, 4);
4202 s390_l (code, s390_r14, s390_r13,
4203 ins->inst_left->inst_basereg, 0);
4204 }
4205 s390_br (code, s390_r14);
4206 }
4207 break;
4208 case OP_CALL_HANDLER: {
4209 mono_add_patch_info (cfg, code-cfg->native_code,
4210 MONO_PATCH_INFO_BB, ins->inst_target_bb);
4211 s390_brasl (code, s390_r14, 0);
4212 }
4213 break;
4214 case OP_LABEL: {
4215 ins->inst_c0 = code - cfg->native_code;
4216 }
4217 break;
4218 case CEE_BR:
4219 EMIT_UNCOND_BRANCH(ins);
4220 break;
4221 case OP_BR_REG: {
4222 s390_br (code, ins->sreg1);
4223 }
4224 break;
4225 case OP_CEQ: {
4226 s390_lhi (code, ins->dreg, 1);
4227 s390_jz (code, 4);
4228 s390_lhi (code, ins->dreg, 0);
4229 }
4230 break;
4231 case OP_CLT: {
4232 s390_lhi (code, ins->dreg, 1);
4233 s390_jl (code, 4);
4234 s390_lhi (code, ins->dreg, 0);
4235 }
4236 break;
4237 case OP_CLT_UN: {
4238 s390_lhi (code, ins->dreg, 1);
4239 s390_jlo (code, 4);
4240 s390_lhi (code, ins->dreg, 0);
4241 }
4242 break;
4243 case OP_CGT: {
4244 s390_lhi (code, ins->dreg, 1);
4245 s390_jh (code, 4);
4246 s390_lhi (code, ins->dreg, 0);
4247 }
4248 break;
4249 case OP_CGT_UN: {
4250 s390_lhi (code, ins->dreg, 1);
4251 s390_jho (code, 4);
4252 s390_lhi (code, ins->dreg, 0);
4253 }
4254 break;
4255 case OP_COND_EXC_EQ:
4256 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
4257 break;
4258 case OP_COND_EXC_NE_UN:
4259 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
4260 break;
4261 case OP_COND_EXC_LT:
4262 case OP_COND_EXC_LT_UN:
4263 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
4264 break;
4265 case OP_COND_EXC_GT:
4266 case OP_COND_EXC_GT_UN:
4267 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
4268 break;
4269 case OP_COND_EXC_GE:
4270 case OP_COND_EXC_GE_UN:
4271 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
4272 break;
4273 case OP_COND_EXC_LE:
4274 case OP_COND_EXC_LE_UN:
4275 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
4276 break;
4277 case OP_COND_EXC_OV:
4278 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
4279 break;
4280 case OP_COND_EXC_NO:
4281 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
4282 break;
4283 case OP_COND_EXC_C:
4284 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
4285 break;
4286 case OP_COND_EXC_NC:
4287 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
4288 break;
4289 case CEE_BEQ:
4290 EMIT_COND_BRANCH (ins, S390_CC_EQ);
4291 break;
4292 case CEE_BNE_UN:
4293 EMIT_COND_BRANCH (ins, S390_CC_NE);
4294 break;
4295 case CEE_BLT:
4296 case CEE_BLT_UN:
4297 EMIT_COND_BRANCH (ins, S390_CC_LT);
4298 break;
4299 case CEE_BGT:
4300 case CEE_BGT_UN:
4301 EMIT_COND_BRANCH (ins, S390_CC_GT);
4302 break;
4303 case CEE_BGE:
4304 case CEE_BGE_UN:
4305 EMIT_COND_BRANCH (ins, S390_CC_GE);
4306 break;
4307 case CEE_BLE:
4308 case CEE_BLE_UN:
4309 EMIT_COND_BRANCH (ins, S390_CC_LE);
4310 break;
4311
4312 /* floating point opcodes */
4313 case OP_R8CONST: {
4314 if (*((float *) ins->inst_p0) == 0) {
4315 s390_lzdr (code, ins->dreg);
4316 } else {
4317 s390_basr (code, s390_r13, 0);
4318 s390_j (code, 4);
4319 s390_word (code, ins->inst_p0);
4320 s390_l (code, s390_r13, 0, s390_r13, 4);
4321 s390_ld (code, ins->dreg, 0, s390_r13, 0);
4322 }
4323 }
4324 break;
4325 case OP_R4CONST: {
4326 if (*((float *) ins->inst_p0) == 0) {
4327 s390_lzdr (code, ins->dreg);
4328 } else {
4329 s390_basr (code, s390_r13, 0);
4330 s390_j (code, 4);
4331 s390_word (code, ins->inst_p0);
4332 s390_l (code, s390_r13, 0, s390_r13, 4);
4333 s390_ldeb (code, ins->dreg, 0, s390_r13, 0);
4334 }
4335 }
4336 break;
4337 case OP_STORER8_MEMBASE_REG: {
4338 if (s390_is_uimm12(ins->inst_offset)) {
4339 s390_std (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
4340 } else {
4341 s390_basr (code, s390_r13, 0);
4342 s390_j (code, 4);
4343 s390_word (code, ins->inst_offset);
4344 s390_l (code, s390_r13, 0, s390_r13, 4);
4345 s390_std (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
4346 }
4347 }
4348 break;
4349 case OP_LOADR8_MEMBASE: {
4350 if (s390_is_uimm12(ins->inst_offset)) {
4351 s390_ld (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
4352 } else {
4353 s390_basr (code, s390_r13, 0);
4354 s390_j (code, 4);
4355 s390_word (code, ins->inst_offset);
4356 s390_l (code, s390_r13, 0, s390_r13, 4);
4357 s390_ld (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
4358 }
4359 }
4360 break;
4361 case OP_STORER4_MEMBASE_REG: {
4362 if (s390_is_uimm12(ins->inst_offset)) {
4363 s390_ledbr(code, s390_f15, ins->sreg1);
4364 s390_ste (code, s390_f15, 0, ins->inst_destbasereg, ins->inst_offset);
4365 } else {
4366 s390_basr (code, s390_r13, 0);
4367 s390_j (code, 4);
4368 s390_word (code, ins->inst_offset);
4369 s390_l (code, s390_r13, 0, s390_r13, 4);
4370 s390_ledbr(code, s390_f15, ins->sreg1);
4371 s390_ste (code, s390_f15, s390_r13, ins->inst_destbasereg, 0);
4372 }
4373 }
4374 break;
4375 case OP_LOADR4_MEMBASE: {
4376 if (s390_is_uimm12(ins->inst_offset)) {
4377 s390_ldeb (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
4378 } else {
4379 s390_basr (code, s390_r13, 0);
4380 s390_j (code, 4);
4381 s390_word (code, ins->inst_offset);
4382 s390_l (code, s390_r13, 0, s390_r13, 4);
4383 s390_ldeb (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
4384 }
4385 }
4386 break;
4387 case CEE_CONV_R_UN: {
4388 s390_cdfbr (code, ins->dreg, ins->sreg1);
4389 s390_ltr (code, ins->sreg1, ins->sreg1);
4390 s390_jnl (code, 12);
4391 s390_basr (code, s390_r13, 0);
4392 s390_j (code, 6);
4393 s390_word (code, 0x41f00000);
4394 s390_word (code, 0);
4395 s390_adb (code, ins->dreg, 0, s390_r13, 4);
4396 }
4397 break;
4398 case CEE_CONV_R4: {
4399 s390_cdfbr (code, ins->dreg, ins->sreg1);
4400 }
4401 break;
4402 case CEE_CONV_R8: {
4403 s390_cdfbr (code, ins->dreg, ins->sreg1);
4404 }
4405 break;
4406 case OP_FCONV_TO_I1:
4407 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
4408 break;
4409 case OP_FCONV_TO_U1:
4410 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
4411 break;
4412 case OP_FCONV_TO_I2:
4413 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
4414 break;
4415 case OP_FCONV_TO_U2:
4416 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
4417 break;
4418 case OP_FCONV_TO_I4:
4419 case OP_FCONV_TO_I:
4420 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
4421 break;
4422 case OP_FCONV_TO_U4:
4423 case OP_FCONV_TO_U:
4424 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
4425 break;
4426 case OP_FCONV_TO_I8:
4427 case OP_FCONV_TO_U8:
4428 g_assert_not_reached ();
4429 /* Implemented as helper calls */
4430 break;
4431 case OP_LCONV_TO_R_UN:
4432 g_assert_not_reached ();
4433 /* Implemented as helper calls */
4434 break;
4435 case OP_LCONV_TO_OVF_I: {
4436 /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
4437 short int *o[5];
4438 s390_ltr (code, ins->sreg1, ins->sreg1);
4439 s390_jnl (code, 0); CODEPTR(code, o[0]);
4440 s390_ltr (code, ins->sreg2, ins->sreg2);
4441 s390_jnl (code, 0); CODEPTR(code, o[1]);
4442 s390_lhi (code, s390_r13, -1);
4443 s390_cr (code, ins->sreg2, s390_r13);
4444 s390_jnz (code, 0); CODEPTR(code, o[2]);
4445 if (ins->dreg != ins->sreg1)
4446 s390_lr (code, ins->dreg, ins->sreg1);
4447 s390_j (code, 0); CODEPTR(code, o[3]);
4448 PTRSLOT(code, o[0]);
4449 s390_ltr (code, ins->sreg2, ins->sreg2);
4450 s390_jz (code, 0); CODEPTR(code, o[4]);
4451 PTRSLOT(code, o[1]);
4452 PTRSLOT(code, o[2]);
4453 mono_add_patch_info (cfg, code - cfg->native_code,
4454 MONO_PATCH_INFO_EXC, "OverflowException");
4455 s390_brasl (code, s390_r14, 0);
4456 PTRSLOT(code, o[3]);
4457 PTRSLOT(code, o[4]);
4458 }
4459 break;
4460 case OP_SQRT: {
4461 s390_sqdbr (code, ins->dreg, ins->sreg1);
4462 }
4463 break;
4464 case OP_FADD: {
4465 if (ins->dreg == ins->sreg1)
4466 s390_adbr (code, ins->dreg, ins->sreg2);
4467 else {
4468 if (ins->dreg == ins->sreg2)
4469 s390_adbr (code, ins->dreg, ins->sreg1);
4470 else {
4471 s390_ldr (code, ins->dreg, ins->sreg1);
4472 s390_adbr (code, ins->dreg, ins->sreg2);
4473 }
4474 }
4475 }
4476 break;
4477 case OP_FSUB: {
4478 if (ins->dreg == ins->sreg1)
4479 s390_sdbr (code, ins->dreg, ins->sreg2);
4480 else {
4481 s390_ldr (code, ins->dreg, ins->sreg1);
4482 s390_sdbr (code, ins->dreg, ins->sreg2);
4483 }
4484 }
4485 break;
4486 case OP_FMUL: {
4487 if (ins->dreg == ins->sreg1)
4488 s390_mdbr (code, ins->dreg, ins->sreg2);
4489 else {
4490 if (ins->dreg == ins->sreg2)
4491 s390_mdbr (code, ins->dreg, ins->sreg1);
4492 else {
4493 s390_ldr (code, ins->dreg, ins->sreg1);
4494 s390_mdbr (code, ins->dreg, ins->sreg2);
4495 }
4496 }
4497 }
4498 break;
4499 case OP_FDIV: {
4500 if (ins->dreg == ins->sreg1)
4501 s390_ddbr (code, ins->dreg, ins->sreg2);
4502 else {
4503 s390_ldr (code, ins->dreg, ins->sreg1);
4504 s390_ddbr (code, ins->dreg, ins->sreg2);
4505 }
4506 }
4507 break;
4508 case OP_FNEG: {
4509 s390_lcdbr (code, ins->dreg, ins->sreg1);
4510 }
4511 break;
4512 case OP_FREM: {
4513 if (ins->dreg != ins->sreg1) {
4514 s390_ldr (code, ins->dreg, ins->sreg1);
4515 }
4516 s390_didbr (code, ins->dreg, ins->sreg2, 5, s390_f15);
4517 }
4518 break;
4519 case OP_FCOMPARE: {
4520 s390_cdbr (code, ins->sreg1, ins->sreg2);
4521 }
4522 break;
4523 case OP_FCEQ: {
4524 s390_cdbr (code, ins->sreg1, ins->sreg2);
4525 s390_lhi (code, ins->dreg, 1);
4526 s390_je (code, 4);
4527 s390_lhi (code, ins->dreg, 0);
4528 }
4529 break;
4530 case OP_FCLT: {
4531 s390_cdbr (code, ins->sreg1, ins->sreg2);
4532 s390_lhi (code, ins->dreg, 1);
4533 s390_jl (code, 4);
4534 s390_lhi (code, ins->dreg, 0);
4535 }
4536 break;
4537 case OP_FCLT_UN: {
4538 s390_cdbr (code, ins->sreg1, ins->sreg2);
4539 s390_lhi (code, ins->dreg, 1);
4540 s390_jlo (code, 4);
4541 s390_lhi (code, ins->dreg, 0);
4542 }
4543 break;
4544 case OP_FCGT: {
4545 s390_cdbr (code, ins->sreg1, ins->sreg2);
4546 s390_lhi (code, ins->dreg, 1);
4547 s390_jh (code, 4);
4548 s390_lhi (code, ins->dreg, 0);
4549 }
4550 break;
4551 case OP_FCGT_UN: {
4552 s390_cdbr (code, ins->sreg1, ins->sreg2);
4553 s390_lhi (code, ins->dreg, 1);
4554 s390_jho (code, 4);
4555 s390_lhi (code, ins->dreg, 0);
4556 }
4557 break;
4558 case OP_FBEQ:
4559 EMIT_COND_BRANCH (ins, S390_CC_EQ|S390_CC_OV);
4560 break;
4561 case OP_FBNE_UN:
4562 EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
4563 break;
4564 case OP_FBLT:
4565 EMIT_COND_BRANCH (ins, S390_CC_LT);
4566 break;
4567 case OP_FBLT_UN:
4568 EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
4569 break;
4570 case OP_FBGT:
4571 EMIT_COND_BRANCH (ins, S390_CC_GT);
4572 break;
4573 case OP_FBGT_UN:
4574 EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
4575 break;
4576 case OP_FBGE:
4577 EMIT_COND_BRANCH (ins, S390_CC_GE);
4578 break;
4579 case OP_FBGE_UN:
4580 EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
4581 break;
4582 case OP_FBLE:
4583 EMIT_COND_BRANCH (ins, S390_CC_LE);
4584 break;
4585 case OP_FBLE_UN:
4586 EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
4587 break;
4588 case CEE_CKFINITE: {
4589 short *o;
4590 s390_lhi (code, s390_r13, 0x7f);
4591 s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
4592 s390_jz (code, 0); CODEPTR(code, o);
4593 mono_add_patch_info (cfg, code - cfg->native_code,
4594 MONO_PATCH_INFO_EXC, "ArithmeticException");
4595 s390_brasl (code, s390_r14,0);
4596 PTRSLOT(code, o);
4597 }
4598 break;
4599 case OP_S390_MOVE: {
4600 if (ins->unused > 0) {
4601 if (ins->unused <= 256) {
4602 s390_mvc (code, ins->unused, ins->dreg,
4603 ins->inst_offset, ins->sreg1, ins->inst_imm);
4604 } else {
4605 s390_lr (code, s390_r0, ins->dreg);
4606 if (s390_is_uimm16 (ins->inst_offset)) {
4607 s390_ahi (code, s390_r0, ins->inst_offset);
4608 } else {
4609 s390_basr (code, s390_r13, 0);
4610 s390_j (code, 4);
4611 s390_word (code, ins->inst_offset);
4612 s390_a (code, s390_r0, 0, s390_r13, 4);
4613 }
4614 s390_lr (code, s390_r14, s390_r12);
4615 s390_lr (code, s390_r12, ins->sreg1);
4616 if (s390_is_uimm16 (ins->inst_imm)) {
4617 s390_ahi (code, s390_r12, ins->inst_imm);
4618 } else {
4619 s390_basr (code, s390_r13, 0);
4620 s390_j (code, 4);
4621 s390_word (code, ins->inst_imm);
4622 s390_a (code, s390_r12, 0, s390_r13, 4);
4623 }
4624 s390_lr (code, s390_r1, ins->sreg1);
4625 s390_lr (code, s390_r13, s390_r1);
4626 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
4627 s390_jo (code, -2);
4628 s390_lr (code, s390_r12, s390_r14);
4629 }
4630 }
4631 }
4632 break;
4633 case OP_ATOMIC_ADD_I4: {
4634 s390_lr (code, s390_r1, ins->sreg2);
4635 s390_l (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4636 s390_a (code, s390_r1, 0, ins->inst_basereg, ins->inst_offset);
4637 s390_cs (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4638 s390_jnz (code, -7);
4639 s390_lr (code, ins->dreg, s390_r1);
4640 }
4641 break;
4642 case OP_ATOMIC_ADD_NEW_I4: {
4643 s390_lr (code, s390_r1, ins->sreg2);
4644 s390_l (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4645 s390_a (code, s390_r1, 0, ins->inst_basereg, ins->inst_offset);
4646 s390_cs (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
4647 s390_jnz (code, -7);
4648 s390_lr (code, ins->dreg, s390_r1);
4649 }
4650 break;
4651 case OP_ATOMIC_EXCHANGE_I4: {
4652 s390_l (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4653 s390_cs (code, s390_r0, ins->sreg2, ins->inst_basereg, ins->inst_offset);
4654 s390_jnz (code, -4);
4655 s390_lr (code, ins->dreg, s390_r0);
4656 }
4657 break;
4658 default:
4659 g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
4660 g_assert_not_reached ();
4661 }
4662
4663 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
4664 g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %d)",
4665 mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
4666 g_assert_not_reached ();
4667 }
4668
4669 cpos += max_len;
4670
4671 last_ins = ins;
4672 last_offset = offset;
4673
4674 ins = ins->next;
4675 }
4676
4677 cfg->code_len = code - cfg->native_code;
4678 }
4679
4680 /*========================= End of Function ========================*/
4681
4682 /*------------------------------------------------------------------*/
4683 /* */
4684 /* Name - mono_arch_register_lowlevel_calls */
4685 /* */
4686 /* Function - Register routines to help with --trace operation. */
4687 /* */
4688 /*------------------------------------------------------------------*/
4689
4690 void
4691 mono_arch_register_lowlevel_calls (void)
4692 {
4693 mono_register_jit_icall (enter_method, "mono_enter_method", NULL, TRUE);
4694 mono_register_jit_icall (leave_method, "mono_leave_method", NULL, TRUE);
4695 }
4696
4697 /*========================= End of Function ========================*/
4698
4699 /*------------------------------------------------------------------*/
4700 /* */
4701 /* Name - mono_arch_patch_code */
4702 /* */
4703 /* Function - Process the patch data created during the */
4704 /* instruction build process. This resolves jumps, */
4705 /* calls, variables etc. */
4706 /* */
4707 /*------------------------------------------------------------------*/
4708
4709 void
4710 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain,
4711 guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4712 {
4713 MonoJumpInfo *patch_info;
4714
4715 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4716 unsigned char *ip = patch_info->ip.i + code;
4717 gconstpointer target = NULL;
4718
4719 target = mono_resolve_patch_target (method, domain, code,
4720 patch_info, run_cctors);
4721
4722 switch (patch_info->type) {
4723 case MONO_PATCH_INFO_IP:
4724 case MONO_PATCH_INFO_EXC_NAME:
4725 case MONO_PATCH_INFO_LDSTR:
4726 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
4727 case MONO_PATCH_INFO_LDTOKEN:
4728 case MONO_PATCH_INFO_EXC:
4729 continue;
4730 case MONO_PATCH_INFO_SWITCH:
4731 /*----------------------------------*/
4732 /* ip points at the basr r13,0/j +4 */
4733 /* instruction the vtable value */
4734 /* follows this (i.e. ip+6) */
4735 /*----------------------------------*/
4736 *((gconstpointer *)(ip+6)) = target;
4737 target = NULL;
4738 continue;
4739 case MONO_PATCH_INFO_METHODCONST:
4740 case MONO_PATCH_INFO_CLASS:
4741 case MONO_PATCH_INFO_IMAGE:
4742 case MONO_PATCH_INFO_FIELD:
4743 case MONO_PATCH_INFO_IID:
4744 target = S390_RELATIVE(target, ip);
4745 continue;
4746 case MONO_PATCH_INFO_R4:
4747 case MONO_PATCH_INFO_R8:
4748 case MONO_PATCH_INFO_METHOD_REL:
4749 g_assert_not_reached ();
4750 continue;
4751 default:
4752 target = S390_RELATIVE(target, ip);
4753 ip += 2;
4754 }
4755 s390_patch (ip, target);
4756 }
4757 }
4758
4759 /*========================= End of Function ========================*/
4760
4761 /*------------------------------------------------------------------*/
4762 /* */
4763 /* Name - mono_arch_emit_prolog */
4764 /* */
4765 /* Function - Create the instruction sequence for a function */
4766 /* prolog. */
4767 /* */
4768 /*------------------------------------------------------------------*/
4769
4770 guint8 *
4771 mono_arch_emit_prolog (MonoCompile *cfg)
4772 {
4773 MonoMethod *method = cfg->method;
4774 MonoBasicBlock *bb;
4775 MonoMethodSignature *sig;
4776 MonoInst *inst;
4777 int alloc_size, pos, max_offset, i;
4778 guint8 *code;
4779 CallInfo *cinfo;
4780 size_data sz;
4781 int tracing = 0;
4782 int lmfOffset; \
4783
4784 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
4785 tracing = 1;
4786
4787 cfg->code_size = 512;
4788 cfg->native_code = code = g_malloc (cfg->code_size);
4789
4790 if (cfg->flags & MONO_CFG_HAS_TAIL) {
4791 s390_stm (code, s390_r2, s390_r14, STK_BASE, S390_PARM_SAVE_OFFSET);
4792 for (pos = 0; pos < 4; pos++)
4793 s390_std (code, pos, 0, STK_BASE,
4794 S390_FLOAT_SAVE_OFFSET+pos*sizeof(double));
4795 } else {
4796 s390_stm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4797 }
4798
4799 if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
4800 cfg->used_int_regs |= 1 << 11;
4801 }
4802
4803 alloc_size = cfg->stack_offset;
4804
4805 cfg->stack_usage = alloc_size;
4806 s390_lr (code, s390_r11, STK_BASE);
4807 if (s390_is_uimm16 (alloc_size)) {
4808 s390_ahi (code, STK_BASE, -alloc_size);
4809 } else {
4810 int stackSize = alloc_size;
4811 while (stackSize > 32767) {
4812 s390_ahi (code, STK_BASE, -32767);
4813 stackSize -= 32767;
4814 }
4815 s390_ahi (code, STK_BASE, -stackSize);
4816 }
4817 s390_st (code, s390_r11, 0, STK_BASE, 0);
4818
4819 if (cfg->frame_reg != STK_BASE)
4820 s390_lr (code, s390_r11, STK_BASE);
4821
4822 /* compute max_offset in order to use short forward jumps
4823 * we always do it on s390 because the immediate displacement
4824 * for jumps is too small
4825 */
4826 max_offset = 0;
4827 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
4828 MonoInst *ins = bb->code;
4829 bb->max_offset = max_offset;
4830
4831 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
4832 max_offset += 6;
4833
4834 while (ins) {
4835 max_offset += ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
4836 ins = ins->next;
4837 }
4838 }
4839
4840 /* load arguments allocated to register from the stack */
4841 sig = method->signature;
4842 pos = 0;
4843
4844 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4845
4846 if (cinfo->struct_ret) {
4847 ArgInfo *ainfo = &cinfo->ret;
4848 inst = cfg->ret;
4849 inst->unused = ainfo->vtsize;
4850 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4851 }
4852
4853 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4854 ArgInfo *ainfo = cinfo->args + i;
4855 inst = cfg->varinfo [pos];
4856
4857 if (inst->opcode == OP_REGVAR) {
4858 if (ainfo->regtype == RegTypeGeneral)
4859 s390_lr (code, inst->dreg, ainfo->reg);
4860 else if (ainfo->regtype == RegTypeFP) {
4861 if (inst->dreg != ainfo->reg) {
4862 if (ainfo->size == 4) {
4863 s390_ledbr (code, inst->dreg, ainfo->reg);
4864 } else {
4865 s390_ldr (code, inst->dreg, ainfo->reg);
4866 }
4867 }
4868 }
4869 else if (ainfo->regtype == RegTypeBase) {
4870 s390_lr (code, s390_r13, STK_BASE);
4871 s390_ahi (code, s390_r13, alloc_size);
4872 s390_l (code, inst->dreg, 0, s390_r13, ainfo->offset);
4873 } else
4874 g_assert_not_reached ();
4875
4876 if (cfg->verbose_level > 2)
4877 g_print ("Argument %d assigned to register %s\n",
4878 pos, mono_arch_regname (inst->dreg));
4879 } else {
4880 if (ainfo->regtype == RegTypeGeneral) {
4881 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4882 g_assert_not_reached();
4883 switch (ainfo->size) {
4884 case 1:
4885 s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4886 break;
4887 case 2:
4888 s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4889 break;
4890 case 8:
4891 s390_stm (code, ainfo->reg, ainfo->reg + 1,
4892 inst->inst_basereg, inst->inst_offset);
4893 break;
4894 default:
4895 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4896 }
4897 } else if (ainfo->regtype == RegTypeBase) {
4898 } else if (ainfo->regtype == RegTypeFP) {
4899 if (ainfo->size == 8)
4900 s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4901 else if (ainfo->size == 4)
4902 s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4903 else
4904 g_assert_not_reached ();
4905 } else if (ainfo->regtype == RegTypeStructByVal) {
4906 int doffset = inst->inst_offset;
4907 int reg;
4908 if (ainfo->reg != STK_BASE)
4909 reg = ainfo->reg;
4910 else {
4911 reg = s390_r0;
4912 s390_lr (code, s390_r13, STK_BASE);
4913 s390_ahi (code, s390_r13, alloc_size);
4914 }
4915 switch (ainfo->size) {
4916 case 1:
4917 if (ainfo->reg == STK_BASE)
4918 s390_ic (code, reg, 0, s390_r13, ainfo->offset+3);
4919 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
4920 break;
4921 case 2:
4922 if (ainfo->reg == STK_BASE)
4923 s390_lh (code, reg, 0, s390_r13, ainfo->offset+2);
4924 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
4925 break;
4926 case 4:
4927 if (ainfo->reg == STK_BASE)
4928 s390_l (code, reg, 0, s390_r13, ainfo->offset);
4929 s390_st (code, reg, 0, inst->inst_basereg, doffset);
4930 break;
4931 case 8:
4932 if (ainfo->reg == STK_BASE)
4933 s390_lm (code, s390_r0, s390_r1, s390_r13, ainfo->offset);
4934 s390_stm (code, reg, reg+1, inst->inst_basereg, doffset);
4935 break;
4936 }
4937 } else if (ainfo->regtype == RegTypeStructByAddr) {
4938 if (ainfo->reg == STK_BASE) {
4939 s390_lr (code, s390_r13, ainfo->reg);
4940 s390_ahi (code, s390_r13, alloc_size);
4941 s390_l (code, s390_r13, 0, s390_r13,
4942 ainfo->offparm + S390_MINIMAL_STACK_SIZE);
4943 code = emit_memcpy (code, abs(ainfo->vtsize),
4944 inst->inst_basereg,
4945 inst->inst_offset, s390_r13, 0);
4946 } else {
4947 code = emit_memcpy (code, abs(ainfo->vtsize),
4948 inst->inst_basereg,
4949 inst->inst_offset,
4950 ainfo->reg, 0);
4951 }
4952 } else
4953 g_assert_not_reached ();
4954 }
4955 pos++;
4956 }
4957
4958 if (method->save_lmf) {
4959 /*---------------------------------------------------------------*/
4960 /* Preserve the parameter registers while we fix up the lmf */
4961 /*---------------------------------------------------------------*/
4962 s390_lr (code, s390_r7, s390_r2);
4963 s390_lr (code, s390_r8, s390_r3);
4964 s390_lr (code, s390_r9, s390_r4);
4965 s390_lr (code, s390_r10, s390_r5);
4966
4967 mono_add_patch_info (cfg, code - cfg->native_code,
4968 MONO_PATCH_INFO_INTERNAL_METHOD,
4969 (gpointer)"mono_get_lmf_addr");
4970 /*---------------------------------------------------------------*/
4971 /* On return from this call r2 have the address of the &lmf */
4972 /*---------------------------------------------------------------*/
4973 s390_brasl (code, s390_r14, 0);
4974
4975 /*---------------------------------------------------------------*/
4976 /* we build the MonoLMF structure on the stack - see mini-s390.h */
4977 /*---------------------------------------------------------------*/
4978 lmfOffset = alloc_size - sizeof(MonoLMF);
4979
4980 s390_lr (code, s390_r13, cfg->frame_reg);
4981 s390_ahi (code, s390_r13, lmfOffset);
4982
4983 /*---------------------------------------------------------------*/
4984 /* Set lmf.lmf_addr = jit_tls->lmf */
4985 /*---------------------------------------------------------------*/
4986 s390_st (code, s390_r2, 0, s390_r13,
4987 G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4988
4989 /*---------------------------------------------------------------*/
4990 /* Get current lmf */
4991 /*---------------------------------------------------------------*/
4992 s390_l (code, s390_r0, 0, s390_r2, 0);
4993
4994 /*---------------------------------------------------------------*/
4995 /* Set our lmf as the current lmf */
4996 /*---------------------------------------------------------------*/
4997 s390_st (code, s390_r13, 0, s390_r2, 0);
4998
4999 /*---------------------------------------------------------------*/
5000 /* Have our lmf.previous_lmf point to the last lmf */
5001 /*---------------------------------------------------------------*/
5002 s390_st (code, s390_r0, 0, s390_r13,
5003 G_STRUCT_OFFSET(MonoLMF, previous_lmf));
5004
5005 /*---------------------------------------------------------------*/
5006 /* save method info */
5007 /*---------------------------------------------------------------*/
5008 s390_basr (code, s390_r1, 0);
5009 s390_j (code, 4);
5010 s390_word (code, method);
5011 s390_l (code, s390_r1, 0, s390_r1, 4);
5012 s390_st (code, s390_r1, 0, s390_r13,
5013 G_STRUCT_OFFSET(MonoLMF, method));
5014
5015 /*---------------------------------------------------------------*/
5016 /* save the current IP */
5017 /*---------------------------------------------------------------*/
5018 s390_lr (code, s390_r1, cfg->frame_reg);
5019 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
5020 s390_basr (code, s390_r1, 0);
5021 s390_la (code, s390_r1, 0, s390_r1, 0);
5022 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
5023
5024 /*---------------------------------------------------------------*/
5025 /* Save general and floating point registers */
5026 /*---------------------------------------------------------------*/
5027 s390_stm (code, s390_r2, s390_r12, s390_r13,
5028 G_STRUCT_OFFSET(MonoLMF, gregs[2]));
5029 for (i = 0; i < 16; i++) {
5030 s390_std (code, i, 0, s390_r13,
5031 G_STRUCT_OFFSET(MonoLMF, fregs[i]));
5032 }
5033
5034 /*---------------------------------------------------------------*/
5035 /* Restore the parameter registers now that we've set up the lmf */
5036 /*---------------------------------------------------------------*/
5037 s390_lr (code, s390_r2, s390_r7);
5038 s390_lr (code, s390_r3, s390_r8);
5039 s390_lr (code, s390_r4, s390_r9);
5040 s390_lr (code, s390_r5, s390_r10);
5041 }
5042
5043 if (tracing)
5044 code = mono_arch_instrument_prolog (cfg, enter_method, code, TRUE);
5045
5046 cfg->code_len = code - cfg->native_code;
5047 g_free (cinfo);
5048
5049 return code;
5050 }
5051
5052 /*========================= End of Function ========================*/
5053
5054 /*------------------------------------------------------------------*/
5055 /* */
5056 /* Name - mono_arch_emit_epilog */
5057 /* */
5058 /* Function - Emit the instructions for a function epilog. */
5059 /* */
5060 /*------------------------------------------------------------------*/
5061
5062 void
5063 mono_arch_emit_epilog (MonoCompile *cfg)
5064 {
5065 MonoJumpInfo *patch_info;
5066 MonoMethod *method = cfg->method;
5067 int tracing = 0;
5068 guint8 *code;
5069 int max_epilog_size = 96;
5070
5071 if (cfg->method->save_lmf)
5072 max_epilog_size += 128;
5073
5074 if (mono_jit_trace_calls != NULL)
5075 max_epilog_size += 128;
5076
5077 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
5078 max_epilog_size += 128;
5079
5080 while ((cfg->code_len + max_epilog_size) > (cfg->code_size - 16)) {
5081 cfg->code_size *= 2;
5082 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
5083 mono_jit_stats.code_reallocs++;
5084 }
5085
5086 code = cfg->native_code + cfg->code_len;
5087
5088 if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
5089 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
5090 tracing = 1;
5091 }
5092
5093 if (method->save_lmf)
5094 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
5095
5096 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
5097 s390_l (code, STK_BASE, 0, STK_BASE, 0);
5098 else
5099 code = backUpStackPtr(cfg, code);
5100
5101 s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
5102 s390_br (code, s390_r14);
5103
5104 cfg->code_len = code - cfg->native_code;
5105
5106 g_assert (cfg->code_len < cfg->code_size);
5107
5108 }
5109
5110 /*========================= End of Function ========================*/
5111
5112 /*------------------------------------------------------------------*/
5113 /* */
5114 /* Name - mono_arch_emit_exceptions */
5115 /* */
5116 /* Function - Emit the blocks to handle exception conditions. */
5117 /* */
5118 /*------------------------------------------------------------------*/
5119
5120 void
5121 mono_arch_emit_exceptions (MonoCompile *cfg)
5122 {
5123 MonoJumpInfo *patch_info;
5124 guint8 *code;
5125 int nThrows = 0,
5126 exc_count = 0,
5127 iExc;
5128 guint32 code_size;
5129 MonoClass *exc_classes [MAX_EXC];
5130 guint8 *exc_throw_start [MAX_EXC],
5131 *exc_throw_end [MAX_EXC];
5132
5133 for (patch_info = cfg->patch_info;
5134 patch_info;
5135 patch_info = patch_info->next) {
5136 if (patch_info->type == MONO_PATCH_INFO_EXC)
5137 exc_count++;
5138 }
5139
5140 code_size = exc_count * 26;
5141
5142 while ((cfg->code_len + code_size) > (cfg->code_size - 16)) {
5143 cfg->code_size *= 2;
5144 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
5145 mono_jit_stats.code_reallocs++;
5146 }
5147
5148 code = cfg->native_code + cfg->code_len;
5149
5150 /*---------------------------------------------------------------------*/
5151 /* Add code to raise exceptions */
5152 /*---------------------------------------------------------------------*/
5153 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
5154 switch (patch_info->type) {
5155 case MONO_PATCH_INFO_EXC: {
5156 guint8 *ip = patch_info->ip.i + cfg->native_code,
5157 *buf, buf2;
5158 MonoClass *exc_class;
5159 guint32 throw_ip;
5160
5161 /*-----------------------------------------------------*/
5162 /* Patch the branch in epilog to come here */
5163 /*-----------------------------------------------------*/
5164 s390_patch (ip + 2, S390_RELATIVE(code,ip));
5165
5166 exc_class = mono_class_from_name (mono_defaults.corlib,
5167 "System",
5168 patch_info->data.name);
5169 g_assert (exc_class);
5170 throw_ip = patch_info->ip.i;
5171
5172 for (iExc = 0; iExc < nThrows; ++iExc)
5173 if (exc_classes [iExc] == exc_class)
5174 break;
5175
5176 if (iExc < nThrows) {
5177 s390_jcl (code, S390_CC_UN, exc_throw_start [iExc]);
5178 patch_info->type = MONO_PATCH_INFO_NONE;
5179 } else {
5180
5181 if (nThrows < MAX_EXC) {
5182 exc_classes [nThrows] = exc_class;
5183 exc_throw_start [nThrows] = code;
5184 }
5185
5186 /*---------------------------------------------*/
5187 /* Patch the parameter passed to the handler */
5188 /*---------------------------------------------*/
5189 s390_basr (code, s390_r13, 0);
5190 s390_j (code, 4);
5191 s390_word (code, patch_info->data.target);
5192 /*---------------------------------------------*/
5193 /* Load return address & parameter register */
5194 /*---------------------------------------------*/
5195 s390_larl (code, s390_r14, S390_RELATIVE((patch_info->ip.i +
5196 cfg->native_code + 8), code));
5197 s390_l (code, s390_r2, 0, s390_r13, 4);
5198 /*---------------------------------------------*/
5199 /* Reuse the current patch to set the jump */
5200 /*---------------------------------------------*/
5201 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
5202 patch_info->data.name = "mono_arch_throw_exception_by_name";
5203 patch_info->ip.i = code - cfg->native_code;
5204 s390_jcl (code, S390_CC_UN, 0);
5205 }
5206 break;
5207 }
5208 default:
5209 /* do nothing */
5210 break;
5211 }
5212 }
5213
5214 cfg->code_len = code - cfg->native_code;
5215
5216 g_assert (cfg->code_len < cfg->code_size);
5217
5218 }
5219
5220 /*========================= End of Function ========================*/
5221
5222 /*------------------------------------------------------------------*/
5223 /* */
5224 /* Name - mono_arch_setup_jit_tls_data */
5225 /* */
5226 /* Function - Setup the JIT's Thread Level Specific Data. */
5227 /* */
5228 /*------------------------------------------------------------------*/
5229
5230 void
5231 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
5232 {
5233 #ifdef MONO_ARCH_SIGSEGV_ON_ALTSTACK
5234 pthread_t self = pthread_self();
5235 pthread_attr_t attr;
5236 void *stAddr = NULL;
5237 size_t stSize = 0;
5238 struct sigaltstack sa;
5239 #endif
5240
5241 if (!tls_offset_inited) {
5242 tls_offset_inited = TRUE;
5243
5244 #if HAVE_KW_THREAD
5245 # if 0
5246 __asm__ ("\tear\t%r1,0\n"
5247 "\tlr\t%0,%3\n"
5248 "\tsr\t%0,%r1\n"
5249 "\tlr\t%1,%4\n"
5250 "\tsr\t%1,%r1\n"
5251 "\tlr\t%2,%5\n"
5252 "\tsr\t%2,%r1\n"
5253 : "=r" (appdomain_tls_offset),
5254 "=r" (thread_tls_offset),
5255 "=r" (lmf_tls_offset)
5256 : "r" (&tls_appdomain),
5257 "r" (&tls_current_object),
5258 "r" (&mono_lmf_addr)
5259 : "1", "cc");
5260 # endif
5261 #endif
5262 }
5263
5264 #ifdef MONO_ARCH_SIGSEGV_ON_ALTSTACK
5265
5266 /*----------------------------------------------------------*/
5267 /* Determine stack boundaries */
5268 /*----------------------------------------------------------*/
5269 if (!mono_running_on_valgrind ()) {
5270 #ifdef HAVE_PTHREAD_GETATTR_NP
5271 pthread_getattr_np( self, &attr );
5272 #elif HAVE_PTHREAD_ATTR_GET_NP
5273 pthread_attr_get_np( self, &attr );
5274 #endif
5275 pthread_attr_getstack( &attr, &stAddr, &stSize );
5276 }
5277
5278
5279 /*----------------------------------------------------------*/
5280 /* Setup an alternate signal stack */
5281 /*----------------------------------------------------------*/
5282 tls->stack_size = stSize;
5283 tls->signal_stack = g_malloc (SIGNAL_STACK_SIZE);
5284 tls->signal_stack_size = SIGNAL_STACK_SIZE;
5285
5286 sa.ss_sp = tls->signal_stack;
5287 sa.ss_size = SIGNAL_STACK_SIZE;
5288 sa.ss_flags = SS_ONSTACK;
5289 sigaltstack (&sa, NULL);
5290 #endif
5291
5292 }
5293
5294 /*========================= End of Function ========================*/
5295
5296 /*------------------------------------------------------------------*/
5297 /* */
5298 /* Name - mono_arch_free_jit_tls_data */
5299 /* */
5300 /* Function - Free tls data. */
5301 /* */
5302 /*------------------------------------------------------------------*/
5303
5304 void
5305 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
5306 {
5307 #ifdef MONO_ARCH_SIGSEGV_ON_ALTSTACK
5308 struct sigaltstack sa;
5309
5310 sa.ss_sp = tls->signal_stack;
5311 sa.ss_size = SIGNAL_STACK_SIZE;
5312 sa.ss_flags = SS_DISABLE;
5313 sigaltstack (&sa, NULL);
5314
5315 if (tls->signal_stack)
5316 g_free (tls->signal_stack);
5317 #endif
5318
5319 }
5320
5321 /*========================= End of Function ========================*/
5322
5323 /*------------------------------------------------------------------*/
5324 /* */
5325 /* Name - mono_arch_emit_this_vret_args */
5326 /* */
5327 /* Function - */
5328 /* */
5329 /*------------------------------------------------------------------*/
5330
5331 void
5332 mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_reg, int this_type, int vt_reg)
5333 {
5334 int this_dreg = s390_r2;
5335
5336 if (vt_reg != -1)
5337 this_dreg = s390_r3;
5338
5339 /* add the this argument */
5340 if (this_reg != -1) {
5341 MonoInst *this;
5342 MONO_INST_NEW (cfg, this, OP_SETREG);
5343 this->type = this_type;
5344 this->sreg1 = this_reg;
5345 this->dreg = this_dreg;
5346 mono_bblock_add_inst (cfg->cbb, this);
5347 }
5348
5349 if (vt_reg != -1) {
5350 MonoInst *vtarg;
5351 MONO_INST_NEW (cfg, vtarg, OP_SETREG);
5352 vtarg->type = STACK_MP;
5353 vtarg->sreg1 = vt_reg;
5354 vtarg->dreg = s390_r2;
5355 mono_bblock_add_inst (cfg->cbb, vtarg);
5356 }
5357 }
5358
5359 /*========================= End of Function ========================*/
5360
5361 /*------------------------------------------------------------------*/
5362 /* */
5363 /* Name - mono_arch_get_inst_for_method */
5364 /* */
5365 /* Function - Check for opcodes we can handle directly in */
5366 /* hardware. */
5367 /* */
5368 /*------------------------------------------------------------------*/
5369
5370 MonoInst*
5371 mono_arch_get_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod,
5372 MonoMethodSignature *fsig, MonoInst **args)
5373 {
5374 MonoInst *ins = NULL;
5375
5376 if (cmethod->klass == mono_defaults.math_class) {
5377 if (strcmp (cmethod->name, "Sqrt") == 0) {
5378 MONO_INST_NEW (cfg, ins, OP_SQRT);
5379 ins->inst_i0 = args [0];
5380 }
5381 } else if(cmethod->klass->image == mono_defaults.corlib &&
5382 (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
5383 (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
5384
5385 if (strcmp (cmethod->name, "Increment") == 0 &&
5386 fsig->params [0]->type == MONO_TYPE_I4) {
5387 MonoInst *ins_iconst;
5388
5389 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_NEW_I4);
5390 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5391 ins_iconst->inst_c0 = 1;
5392
5393 ins->inst_i0 = args [0];
5394 ins->inst_i1 = ins_iconst;
5395 } else if (strcmp (cmethod->name, "Decrement") == 0 &&
5396 fsig->params [0]->type == MONO_TYPE_I4) {
5397 MonoInst *ins_iconst;
5398
5399 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_NEW_I4);
5400 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
5401 ins_iconst->inst_c0 = -1;
5402
5403 ins->inst_i0 = args [0];
5404 ins->inst_i1 = ins_iconst;
5405 } else if (strcmp (cmethod->name, "Exchange") == 0 &&
5406 fsig->params [0]->type == MONO_TYPE_I4) {
5407 MONO_INST_NEW (cfg, ins, OP_ATOMIC_EXCHANGE_I4);
5408
5409 ins->inst_i0 = args [0];
5410 ins->inst_i1 = args [1];
5411 } else if (strcmp (cmethod->name, "Add") == 0 &&
5412 fsig->params [0]->type == MONO_TYPE_I4) {
5413 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
5414
5415 ins->inst_i0 = args [0];
5416 ins->inst_i1 = args [1];
5417 }
5418 }
5419 return ins;
5420 }
5421
5422 /*========================= End of Function ========================*/
5423
5424 /*------------------------------------------------------------------*/
5425 /* */
5426 /* Name - mono_arch_print_tree */
5427 /* */
5428 /* Function - Print platform-specific opcode details. */
5429 /* */
5430 /* Returns - 1 - opcode details have been printed */
5431 /* 0 - opcode details have not been printed */
5432 /* */
5433 /*------------------------------------------------------------------*/
5434
5435 gboolean
5436 mono_arch_print_tree (MonoInst *tree, int arity)
5437 {
5438 gboolean done;
5439
5440 switch (tree->opcode) {
5441 case OP_S390_LOADARG:
5442 case OP_S390_ARGPTR:
5443 printf ("[0x%x(%s)]", tree->inst_offset,
5444 mono_arch_regname (tree->inst_basereg));
5445 done = 1;
5446 break;
5447 case OP_S390_STKARG:
5448 printf ("[0x%x(previous_frame)]",
5449 tree->inst_offset);
5450 done = 1;
5451 break;
5452 case OP_S390_MOVE:
5453 printf ("[0x%x(%d,%s),0x%x(%s)]",
5454 tree->inst_offset, tree->unused,
5455 tree->dreg, tree->inst_imm,
5456 tree->sreg1);
5457 done = 1;
5458 break;
5459 case OP_S390_SETF4RET:
5460 printf ("[f%d,f%d]",
5461 mono_arch_regname (tree->dreg),
5462 mono_arch_regname (tree->sreg1));
5463 done = 1;
5464 break;
5465 case OP_TLS_GET:
5466 printf ("[0x%x(0x%x,%s)]", tree->inst_offset,
5467 tree->inst_imm,
5468 mono_arch_regname (tree->sreg1));
5469 done = 1;
5470 default:
5471 done = 0;
5472 }
5473 return (done);
5474 }
5475
5476 /*========================= End of Function ========================*/
5477
5478 /*------------------------------------------------------------------*/
5479 /* */
5480 /* Name - mono_arch_regalloc_cost */
5481 /* */
5482 /* Function - Determine the cost, in the number of memory */
5483 /* references, of the action of allocating the var- */
5484 /* iable VMV into a register during global register */
5485 /* allocation. */
5486 /* */
5487 /* Returns - Cost */
5488 /* */
5489 /*------------------------------------------------------------------*/
5490
5491 guint32
5492 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
5493 {
5494 /* FIXME: */
5495 return 2;
5496 }
5497
5498 /*========================= End of Function ========================*/
5499
5500 /*------------------------------------------------------------------*/
5501 /* */
5502 /* Name - mono_arch_get_domain_intrinsic */
5503 /* */
5504 /* Function - */
5505 /* */
5506 /* Returns - */
5507 /* */
5508 /*------------------------------------------------------------------*/
5509
5510 MonoInst *
5511 mono_arch_get_domain_intrinsic (MonoCompile* cfg)
5512 {
5513 MonoInst *ins;
5514
5515 if (appdomain_tls_offset == -1)
5516 return NULL;
5517
5518 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
5519 ins->inst_offset = appdomain_tls_offset;
5520 return (ins);
5521 }
5522
5523 /*========================= End of Function ========================*/
5524
5525 /*------------------------------------------------------------------*/
5526 /* */
5527 /* Name - mono_arch_get_thread_intrinsic */
5528 /* */
5529 /* Function - */
5530 /* */
5531 /* Returns - */
5532 /* */
5533 /*------------------------------------------------------------------*/
5534
5535 MonoInst *
5536 mono_arch_get_thread_intrinsic (MonoCompile* cfg)
5537 {
5538 MonoInst *ins;
5539
5540 if (thread_tls_offset == -1)
5541 return NULL;
5542
5543 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
5544 ins->inst_offset = thread_tls_offset;
5545 return (ins);
5546 }
5547
5548 /*========================= End of Function ========================*/
5549
5550 /*------------------------------------------------------------------*/
5551 /* */
5552 /* Name - mono_arch_flush_register_windows */
5553 /* */
5554 /* Function - */
5555 /* */
5556 /* Returns - */
5557 /* */
5558 /*------------------------------------------------------------------*/
5559
5560 void
5561 mono_arch_flush_register_windows (void)
5562 {
5563 }
5564
5565 /*========================= End of Function ========================*/
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