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Fix ckfinite logic
[mono.git] / mono / mini / mini-s390.c
blob8acf3aae0c2d0cafab9b3bfaf3925d5bef9b2802
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. (trampoline)", 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 #define reg_is_freeable(r) ((r) >= 3 && (r) <= 10)
102 #define freg_is_freeable(r) ((r) >= 1 && (r) <= 14)
103
104 /*----------------------------------------*/
105 /* use s390_r3-s390_r10 as temp registers */
106 /*----------------------------------------*/
107 #define S390_CALLER_REGS (0x03f8)
108
109 /*----------------------------------------*/
110 /* use s390_f2-s390_f14 as temp registers */
111 /*----------------------------------------*/
112 #define S390_CALLER_FREGS (0x73f8)
113
114 #define S390_TRACE_STACK_SIZE (5*sizeof(gint32)+3*sizeof(gdouble))
115
116 /*========================= End of Defines =========================*/
117
118 /*------------------------------------------------------------------*/
119 /* I n c l u d e s */
120 /*------------------------------------------------------------------*/
121
122 #include "mini.h"
123 #include <string.h>
124
125 #include <mono/metadata/appdomain.h>
126 #include <mono/metadata/debug-helpers.h>
127 #include <mono/metadata/profiler-private.h>
128 #include <mono/utils/mono-math.h>
129
130 #include "mini-s390.h"
131 #include "inssel.h"
132 #include "cpu-s390.h"
133
134 /*========================= End of Includes ========================*/
135
136 /*------------------------------------------------------------------*/
137 /* T y p e d e f s */
138 /*------------------------------------------------------------------*/
139
140 typedef struct {
141 guint stack_size,
142 local_size,
143 code_size,
144 retStruct;
145 } size_data;
146
147 /*------------------------------------------------------------------*/
148 /* Used by the instrument_emit_epilog */
149 /*------------------------------------------------------------------*/
150
151 enum {
152 SAVE_NONE,
153 SAVE_STRUCT,
154 SAVE_ONE,
155 SAVE_TWO,
156 SAVE_FP
157 };
158
159 typedef struct {
160 int born_in;
161 int killed_in;
162 int last_use;
163 int prev_use;
164 } RegTrack;
165
166 typedef struct InstList InstList;
167
168 struct InstList {
169 InstList *prev;
170 InstList *next;
171 MonoInst *data;
172 };
173
174 enum {
175 RegTypeGeneral,
176 RegTypeBase,
177 RegTypeFP,
178 RegTypeStructByVal,
179 RegTypeStructByAddr
180 };
181
182 typedef struct {
183 gint32 offset; /* offset from caller's stack */
184 gint32 offparm; /* offset on callee's stack */
185 guint16 vtsize; /* in param area */
186 guint8 reg;
187 guint8 regtype; /* See RegType* */
188 guint32 size; /* Size of structure used by RegTypeStructByVal */
189 } ArgInfo;
190
191 typedef struct {
192 int nargs;
193 guint32 stack_usage;
194 guint32 struct_ret;
195 ArgInfo ret;
196 ArgInfo args [1];
197 } CallInfo;
198
199 typedef struct {
200 gint32 gr[5]; /* R2-R6 */
201 gdouble fp[3]; /* F0-F2 */
202 } __attribute__ ((packed)) RegParm;
203
204 /*========================= End of Typedefs ========================*/
205
206 /*------------------------------------------------------------------*/
207 /* P r o t o t y p e s */
208 /*------------------------------------------------------------------*/
209
210 static guint32 * emit_memcpy (guint8 *, int, int, int, int, int);
211 static void indent (int);
212 static guint8 * restoreLMF(MonoCompile *, guint8 *);
213 static guint8 * backUpStackPtr(MonoCompile *, guint8 *);
214 static void decodeParm (MonoType *, void *, int);
215 static void enter_method (MonoMethod *, RegParm *, char *);
216 static void leave_method (MonoMethod *, ...);
217 static gboolean is_regsize_var (MonoType *);
218 static void add_general (guint *, size_data *, ArgInfo *, gboolean);
219 static CallInfo * calculate_sizes (MonoMethodSignature *, size_data *, gboolean);
220 static void peephole_pass (MonoCompile *, MonoBasicBlock *);
221 static int mono_spillvar_offset (MonoCompile *, int);
222 static int mono_spillvar_offset_float (MonoCompile *, int);
223 static void print_ins (int, MonoInst *);
224 static void print_regtrack (RegTrack *, int);
225 static InstList * inst_list_prepend (MonoMemPool *, InstList *, MonoInst *);
226 static int get_register_force_spilling (MonoCompile *, InstList *, MonoInst *, int);
227 static int get_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
228 static int get_float_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
229 static MonoInst * create_copy_ins (MonoCompile *, int, int, MonoInst *);
230 static MonoInst * create_copy_ins_float (MonoCompile *, int, int, MonoInst *);
231 static MonoInst * create_spilled_store (MonoCompile *, int, int, int, MonoInst *);
232 static MonoInst * create_spilled_store_float (MonoCompile *, int, int, int, MonoInst *);
233 static void insert_before_ins (MonoInst *, InstList *, MonoInst *);
234 static int alloc_int_reg (MonoCompile *, InstList *, MonoInst *, int, guint32);
235 static guchar * emit_float_to_int (MonoCompile *, guchar *, int, int, int, gboolean);
236 static unsigned char * mono_emit_stack_alloc (guchar *, MonoInst *);
237
238 /*========================= End of Prototypes ======================*/
239
240 /*------------------------------------------------------------------*/
241 /* G l o b a l V a r i a b l e s */
242 /*------------------------------------------------------------------*/
243
244 int mono_exc_esp_offset = 0;
245
246 static int indent_level = 0;
247
248 static const char*const * ins_spec = s390;
249
250 /*====================== End of Global Variables ===================*/
251
252 /*------------------------------------------------------------------*/
253 /* */
254 /* Name - mono_arch_regname */
255 /* */
256 /* Function - Returns the name of the register specified by */
257 /* the input parameter. */
258 /* */
259 /*------------------------------------------------------------------*/
260
261 const char*
262 mono_arch_regname (int reg) {
263 static const char * rnames[] = {
264 "s390_r0", "s390_sp", "s390_r2", "s390_r3", "s390_r4",
265 "s390_r5", "s390_r6", "s390_r7", "s390_r8", "s390_r9",
266 "s390_r10", "s390_r11", "s390_r12", "s390_r13", "s390_r14",
267 "s390_r15"
268 };
269 if (reg >= 0 && reg < 16)
270 return rnames [reg];
271 return "unknown";
272 }
273
274 /*========================= End of Function ========================*/
275
276 /*------------------------------------------------------------------*/
277 /* */
278 /* Name - emit_memcpy */
279 /* */
280 /* Function - Emit code to move from memory-to-memory based on */
281 /* the size of the variable. r0 is overwritten. */
282 /* */
283 /*------------------------------------------------------------------*/
284
285 static guint32*
286 emit_memcpy (guint8 *code, int size, int dreg, int doffset, int sreg, int soffset)
287 {
288 switch (size) {
289 case 4 :
290 s390_l (code, s390_r0, 0, sreg, soffset);
291 s390_st (code, s390_r0, 0, dreg, doffset);
292 break;
293
294 case 3 :
295 s390_icm (code, s390_r0, 14, sreg, soffset);
296 s390_stcm (code, s390_r0, 14, dreg, doffset);
297 break;
298
299 case 2 :
300 s390_lh (code, s390_r0, 0, sreg, soffset);
301 s390_sth (code, s390_r0, 0, dreg, doffset);
302 break;
303
304 case 1 :
305 s390_ic (code, s390_r0, 0, sreg, soffset);
306 s390_stc (code, s390_r0, 0, dreg, doffset);
307 break;
308
309 default :
310 while (size > 0) {
311 int len;
312
313 if (size > 256)
314 len = 256;
315 else
316 len = size;
317 s390_mvc (code, len, dreg, doffset, sreg, soffset);
318 size -= len;
319 }
320 }
321 return code;
322 }
323
324 /*========================= End of Function ========================*/
325
326 /*------------------------------------------------------------------*/
327 /* */
328 /* Name - arch_get_argument_info */
329 /* */
330 /* Function - Gathers information on parameters such as size, */
331 /* alignment, and padding. arg_info should be large */
332 /* enough to hold param_count + 1 entries. */
333 /* */
334 /* Parameters - @csig - Method signature */
335 /* @param_count - No. of parameters to consider */
336 /* @arg_info - An array to store the result info */
337 /* */
338 /* Returns - Size of the activation frame */
339 /* */
340 /*------------------------------------------------------------------*/
341
342 int
343 mono_arch_get_argument_info (MonoMethodSignature *csig,
344 int param_count,
345 MonoJitArgumentInfo *arg_info)
346 {
347 int k, frame_size = 0;
348 int size, align, pad;
349 int offset = 8;
350
351 if (MONO_TYPE_ISSTRUCT (csig->ret)) {
352 frame_size += sizeof (gpointer);
353 offset += 4;
354 }
355
356 arg_info [0].offset = offset;
357
358 if (csig->hasthis) {
359 frame_size += sizeof (gpointer);
360 offset += 4;
361 }
362
363 arg_info [0].size = frame_size;
364
365 for (k = 0; k < param_count; k++) {
366
367 if (csig->pinvoke)
368 size = mono_type_native_stack_size (csig->params [k], &align);
369 else
370 size = mono_type_stack_size (csig->params [k], &align);
371
372 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
373 arg_info [k].pad = pad;
374 frame_size += size;
375 arg_info [k + 1].pad = 0;
376 arg_info [k + 1].size = size;
377 offset += pad;
378 arg_info [k + 1].offset = offset;
379 offset += size;
380 }
381
382 align = MONO_ARCH_FRAME_ALIGNMENT;
383 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
384 arg_info [k].pad = pad;
385
386 return frame_size;
387 }
388
389 /*========================= End of Function ========================*/
390
391 /*------------------------------------------------------------------*/
392 /* */
393 /* Name - restoreLMF */
394 /* */
395 /* Function - Restore the LMF state prior to exiting a method. */
396 /* */
397 /*------------------------------------------------------------------*/
398
399 static inline guint8 *
400 restoreLMF(MonoCompile *cfg, guint8 *code)
401 {
402 int lmfOffset = 0;
403
404 s390_lr (code, s390_r13, cfg->frame_reg);
405
406 lmfOffset = cfg->stack_usage - sizeof(MonoLMF);
407
408 /*-------------------------------------------------*/
409 /* r13 = my lmf */
410 /*-------------------------------------------------*/
411 s390_ahi (code, s390_r13, lmfOffset);
412
413 /*-------------------------------------------------*/
414 /* r6 = &jit_tls->lmf */
415 /*-------------------------------------------------*/
416 s390_l (code, s390_r6, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
417
418 /*-------------------------------------------------*/
419 /* r0 = lmf.previous_lmf */
420 /*-------------------------------------------------*/
421 s390_l (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
422
423 /*-------------------------------------------------*/
424 /* jit_tls->lmf = previous_lmf */
425 /*-------------------------------------------------*/
426 s390_l (code, s390_r13, 0, s390_r6, 0);
427 s390_st (code, s390_r0, 0, s390_r6, 0);
428 return (code);
429 }
430
431 /*========================= End of Function ========================*/
432
433 /*------------------------------------------------------------------*/
434 /* */
435 /* Name - backStackPtr. */
436 /* */
437 /* Function - Restore Stack Pointer to previous frame. */
438 /* */
439 /*------------------------------------------------------------------*/
440
441 static inline guint8 *
442 backUpStackPtr(MonoCompile *cfg, guint8 *code)
443 {
444 int stackSize = cfg->stack_usage;
445
446 if (s390_is_imm16 (cfg->stack_usage)) {
447 s390_ahi (code, STK_BASE, cfg->stack_usage);
448 } else {
449 while (stackSize > 32767) {
450 s390_ahi (code, STK_BASE, -32767);
451 stackSize -= 32767;
452 }
453 s390_ahi (code, STK_BASE, -stackSize);
454 }
455 return (code);
456 }
457
458 /*========================= End of Function ========================*/
459
460 /*------------------------------------------------------------------*/
461 /* */
462 /* Name - indent */
463 /* */
464 /* Function - Perform nice indenting to current level */
465 /* */
466 /*------------------------------------------------------------------*/
467
468 static void
469 indent (int diff) {
470 int v;
471 if (diff < 0)
472 indent_level += diff;
473 v = indent_level;
474 printf("[%3d] ",v);
475 while (v-- > 0) {
476 printf (". ");
477 }
478 if (diff > 0)
479 indent_level += diff;
480 }
481
482 /*========================= End of Function ========================*/
483
484 /*------------------------------------------------------------------*/
485 /* */
486 /* Name - decodeParm */
487 /* */
488 /* Function - Decode a parameter for the trace. */
489 /* */
490 /*------------------------------------------------------------------*/
491
492 static void
493 decodeParm(MonoType *type, void *curParm, int size)
494 {
495 guint32 simpleType;
496
497 if (type->byref) {
498 printf("[BYREF:%p], ", *((char **) curParm));
499 } else {
500 simpleType = type->type;
501 enum_parmtype:
502 switch (simpleType) {
503 case MONO_TYPE_I :
504 printf ("[INTPTR:%p], ", *((int **) curParm));
505 break;
506 case MONO_TYPE_U :
507 printf ("[UINTPTR:%p], ", *((int **) curParm));
508 break;
509 case MONO_TYPE_BOOLEAN :
510 printf ("[BOOL:%p], ", *((int *) curParm));
511 break;
512 case MONO_TYPE_CHAR :
513 printf ("[CHAR:%p], ", *((int *) curParm));
514 break;
515 case MONO_TYPE_I1 :
516 printf ("[INT1:%d], ", *((int *) curParm));
517 break;
518 case MONO_TYPE_I2 :
519 printf ("[INT2:%d], ", *((int *) curParm));
520 break;
521 case MONO_TYPE_I4 :
522 printf ("[INT4:%d], ", *((int *) curParm));
523 break;
524 case MONO_TYPE_U1 :
525 printf ("[UINT1:%ud], ", *((unsigned int *) curParm));
526 break;
527 case MONO_TYPE_U2 :
528 printf ("[UINT2:%ud], ", *((guint16 *) curParm));
529 break;
530 case MONO_TYPE_U4 :
531 printf ("[UINT4:%ud], ", *((guint32 *) curParm));
532 break;
533 case MONO_TYPE_U8 :
534 printf ("[UINT8:%ul], ", *((guint64 *) curParm));
535 break;
536 case MONO_TYPE_STRING : {
537 MonoString *s = *((MonoString **) curParm);
538 if (s) {
539 g_assert (((MonoObject *) s)->vtable->klass == mono_defaults.string_class);
540 printf("[STRING:%p:%s], ", s, mono_string_to_utf8(s));
541 } else {
542 printf("[STRING:null], ");
543 }
544 break;
545 }
546 case MONO_TYPE_CLASS :
547 case MONO_TYPE_OBJECT : {
548 MonoObject *obj = *((MonoObject **) curParm);
549 MonoClass *class;
550 if (obj) {
551 printf("[CLASS/OBJ:");
552 class = obj->vtable->klass;
553 if (class == mono_defaults.string_class) {
554 printf("[STRING:%p:%s]",
555 *obj, mono_string_to_utf8 (obj));
556 } else if (class == mono_defaults.int32_class) {
557 printf("[INT32:%p:%d]",
558 obj, *(gint32 *)((char *)obj + sizeof (MonoObject)));
559 } else
560 printf("[%s.%s:%p]",
561 class->name_space, class->name, obj);
562 printf("], ");
563 } else {
564 printf("[OBJECT:null], ");
565 }
566 break;
567 }
568 case MONO_TYPE_PTR :
569 printf("[PTR:%p], ", *((gpointer **) (curParm)));
570 break;
571 case MONO_TYPE_FNPTR :
572 printf("[FNPTR:%p], ", *((gpointer **) (curParm)));
573 break;
574 case MONO_TYPE_ARRAY :
575 printf("[ARRAY:%p], ", *((gpointer **) (curParm)));
576 break;
577 case MONO_TYPE_SZARRAY :
578 printf("[SZARRAY:%p], ", *((gpointer **) (curParm)));
579 break;
580 case MONO_TYPE_I8 :
581 printf("[INT8:%lld], ", *((gint64 *) (curParm)));
582 break;
583 case MONO_TYPE_R4 :
584 printf("[FLOAT4:%f], ", *((float *) (curParm)));
585 break;
586 case MONO_TYPE_R8 :
587 printf("[FLOAT8:%g], ", *((double *) (curParm)));
588 break;
589 case MONO_TYPE_VALUETYPE : {
590 int i;
591 if (type->data.klass->enumtype) {
592 simpleType = type->data.klass->enum_basetype->type;
593 printf("{VALUETYPE} - ");
594 goto enum_parmtype;
595 }
596 printf("[VALUETYPE:");
597 for (i = 0; i < size; i++)
598 printf("%02x,", *((guint8 *)curParm+i));
599 printf("]");
600 break;
601 }
602 default :
603 printf("[?? - %d], ",simpleType);
604 }
605 }
606 }
607
608 /*========================= End of Function ========================*/
609
610 /*------------------------------------------------------------------*/
611 /* */
612 /* Name - enter_method */
613 /* */
614 /* Function - Perform tracing of the entry to the current */
615 /* method. */
616 /* */
617 /*------------------------------------------------------------------*/
618
619 static int methodCount = 0;
620
621 static void
622 enter_method (MonoMethod *method, RegParm *rParm, char *sp)
623 {
624 int i, oParm = 0, iParm = 0;
625 MonoClass *class;
626 MonoObject *obj;
627 MonoJitArgumentInfo *arg_info;
628 MonoMethodSignature *sig;
629 char *fname;
630 guint32 ip;
631 CallInfo *cinfo;
632 ArgInfo *ainfo;
633 size_data sz;
634 void *curParm;
635
636 methodCount++;
637 if (methodCount > 150000) {
638 methodCount = 0;
639 rewind(stdout);
640 }
641 fname = mono_method_full_name (method, TRUE);
642 indent (1);
643 printf ("ENTER: %s(", fname);
644 g_free (fname);
645
646 ip = (*(guint32 *) (sp+S390_RET_ADDR_OFFSET)) & 0x7fffffff;
647 printf (") ip: %p sp: %p\n", ip, sp);
648
649 if (rParm == NULL)
650 return;
651
652 sig = method->signature;
653
654 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
655
656 if (cinfo->struct_ret) {
657 printf ("[VALUERET:%p], ", rParm->gr[0]);
658 iParm = 1;
659 }
660
661 if (sig->hasthis) {
662 gpointer *this = (gpointer *) rParm->gr[iParm];
663 obj = (MonoObject *) this;
664 if (method->klass->valuetype) {
665 if (obj) {
666 printf("this:[value:%p:%08x], ",
667 this, *((guint32 *)(this+sizeof(MonoObject))));
668 } else
669 printf ("this:[NULL], ");
670 } else {
671 if (obj) {
672 class = obj->vtable->klass;
673 if (class == mono_defaults.string_class) {
674 printf ("this:[STRING:%p:%s], ",
675 obj, mono_string_to_utf8 ((MonoString *)obj));
676 } else {
677 printf ("this:%p[%s.%s], ",
678 obj, class->name_space, class->name);
679 }
680 } else
681 printf ("this:NULL, ");
682 }
683 oParm++;
684 }
685
686 for (i = 0; i < sig->param_count; ++i) {
687 ainfo = cinfo->args + (i + oParm);
688 switch (ainfo->regtype) {
689 case RegTypeGeneral :
690 decodeParm(sig->params[i], &(rParm->gr[ainfo->reg-2]), ainfo->size);
691 break;
692 case RegTypeFP :
693 decodeParm(sig->params[i], &(rParm->fp[ainfo->reg]), ainfo->size);
694 break;
695 case RegTypeBase :
696 decodeParm(sig->params[i], sp+ainfo->offset, ainfo->size);
697 break;
698 case RegTypeStructByVal :
699 if (ainfo->reg != STK_BASE)
700 curParm = &(rParm->gr[ainfo->reg-2]);
701 else
702 curParm = sp+ainfo->offset;
703
704 switch (ainfo->vtsize) {
705 case 0:
706 case 1:
707 case 2:
708 case 4:
709 case 8:
710 decodeParm(sig->params[i],
711 curParm,
712 ainfo->size);
713 break;
714 default:
715 decodeParm(sig->params[i],
716 *((char **) curParm),
717 ainfo->vtsize);
718 }
719 break;
720 case RegTypeStructByAddr :
721 if (ainfo->reg != STK_BASE)
722 curParm = &(rParm->gr[ainfo->reg-2]);
723 else
724 curParm = sp+ainfo->offset;
725
726 decodeParm(sig->params[i],
727 *((char **) curParm),
728 ainfo->vtsize);
729 break;
730
731 default :
732 printf("???, ");
733 }
734 }
735 printf("\n");
736 g_free(cinfo);
737 }
738
739 /*========================= End of Function ========================*/
740
741 /*------------------------------------------------------------------*/
742 /* */
743 /* Name - leave_method */
744 /* */
745 /* Function - */
746 /* */
747 /*------------------------------------------------------------------*/
748
749 static void
750 leave_method (MonoMethod *method, ...)
751 {
752 MonoType *type;
753 char *fname;
754 guint32 ip;
755 va_list ap;
756
757 va_start(ap, method);
758
759 fname = mono_method_full_name (method, TRUE);
760 indent (-1);
761 printf ("LEAVE: %s", fname);
762 g_free (fname);
763
764 type = method->signature->ret;
765
766 handle_enum:
767 switch (type->type) {
768 case MONO_TYPE_VOID:
769 break;
770 case MONO_TYPE_BOOLEAN: {
771 int val = va_arg (ap, int);
772 if (val)
773 printf ("[TRUE:%d]", val);
774 else
775 printf ("[FALSE]");
776
777 break;
778 }
779 case MONO_TYPE_CHAR: {
780 int val = va_arg (ap, int);
781 printf ("[CHAR:%d]", val);
782 break;
783 }
784 case MONO_TYPE_I1: {
785 int val = va_arg (ap, int);
786 printf ("[INT1:%d]", val);
787 break;
788 }
789 case MONO_TYPE_U1: {
790 int val = va_arg (ap, int);
791 printf ("[UINT1:%d]", val);
792 break;
793 }
794 case MONO_TYPE_I2: {
795 int val = va_arg (ap, int);
796 printf ("[INT2:%d]", val);
797 break;
798 }
799 case MONO_TYPE_U2: {
800 int val = va_arg (ap, int);
801 printf ("[UINT2:%d]", val);
802 break;
803 }
804 case MONO_TYPE_I4: {
805 int val = va_arg (ap, int);
806 printf ("[INT4:%d]", val);
807 break;
808 }
809 case MONO_TYPE_U4: {
810 int val = va_arg (ap, int);
811 printf ("[UINT4:%d]", val);
812 break;
813 }
814 case MONO_TYPE_I: {
815 int *val = va_arg (ap, int*);
816 printf ("[INT:%d]", val);
817 printf("]");
818 break;
819 }
820 case MONO_TYPE_U: {
821 int *val = va_arg (ap, int*);
822 printf ("[UINT:%d]", val);
823 printf("]");
824 break;
825 }
826 case MONO_TYPE_STRING: {
827 MonoString *s = va_arg (ap, MonoString *);
828 ;
829 if (s) {
830 g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
831 printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
832 } else
833 printf ("[STRING:null], ");
834 break;
835 }
836 case MONO_TYPE_CLASS:
837 case MONO_TYPE_OBJECT: {
838 MonoObject *o = va_arg (ap, MonoObject *);
839
840 if (o) {
841 if (o->vtable->klass == mono_defaults.boolean_class) {
842 printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
843 } else if (o->vtable->klass == mono_defaults.int32_class) {
844 printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
845 } else if (o->vtable->klass == mono_defaults.int64_class) {
846 printf ("[INT64:%p:%lld]", o, *((gint64 *)((char *)o + sizeof (MonoObject))));
847 } else
848 printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
849 } else
850 printf ("[OBJECT:%p]", o);
851
852 break;
853 }
854 case MONO_TYPE_PTR:
855 case MONO_TYPE_FNPTR:
856 case MONO_TYPE_ARRAY:
857 case MONO_TYPE_SZARRAY: {
858 gpointer p = va_arg (ap, gpointer);
859 printf ("[result=%p]", p);
860 break;
861 }
862 case MONO_TYPE_I8: {
863 gint64 l = va_arg (ap, gint64);
864 printf ("[LONG:%lld]", l);
865 break;
866 }
867 case MONO_TYPE_R4: {
868 double f = va_arg (ap, double);
869 printf ("[FLOAT4:%f]\n", (float) f);
870 break;
871 }
872 case MONO_TYPE_R8: {
873 double f = va_arg (ap, double);
874 printf ("[FLOAT8:%g]\n", f);
875 break;
876 }
877 case MONO_TYPE_VALUETYPE:
878 if (type->data.klass->enumtype) {
879 type = type->data.klass->enum_basetype;
880 goto handle_enum;
881 } else {
882 guint8 *p = va_arg (ap, gpointer);
883 int j, size, align;
884 size = mono_type_size (type, &align);
885 printf ("[");
886 for (j = 0; p && j < size; j++)
887 printf ("%02x,", p [j]);
888 printf ("]");
889 }
890 break;
891 default:
892 printf ("(unknown return type %x)",
893 method->signature->ret->type);
894 }
895
896 ip = ((gint32) __builtin_return_address (0)) & 0x7fffffff;
897 printf (" ip: %p\n", ip);
898 }
899
900 /*========================= End of Function ========================*/
901
902 /*------------------------------------------------------------------*/
903 /* */
904 /* Name - mono_arch_cpu_init */
905 /* */
906 /* Function - Perform CPU specific initialization to execute */
907 /* managed code. */
908 /* */
909 /*------------------------------------------------------------------*/
910
911 void
912 mono_arch_cpu_init (void)
913 {
914 guint mode = 1;
915
916 /*--------------------------------------*/
917 /* Set default rounding mode for FP */
918 /*--------------------------------------*/
919 __asm__ ("SRNM\t%0\n\t"
920 : : "m" (mode));
921 }
922
923 /*========================= End of Function ========================*/
924
925 /*------------------------------------------------------------------*/
926 /* */
927 /* Name - mono_arch_cpu_optimizazions */
928 /* */
929 /* Function - Returns the optimizations supported on this CPU */
930 /* */
931 /*------------------------------------------------------------------*/
932
933 guint32
934 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
935 {
936 guint32 opts = 0;
937
938 /* no s390-specific optimizations yet */
939 *exclude_mask = MONO_OPT_INLINE|MONO_OPT_LINEARS;
940 return opts;
941 }
942
943 /*========================= End of Function ========================*/
944
945 /*------------------------------------------------------------------*/
946 /* */
947 /* Name - */
948 /* */
949 /* Function - */
950 /* */
951 /*------------------------------------------------------------------*/
952
953 static gboolean
954 is_regsize_var (MonoType *t) {
955 if (t->byref)
956 return TRUE;
957 switch (t->type) {
958 case MONO_TYPE_I4:
959 case MONO_TYPE_U4:
960 case MONO_TYPE_I:
961 case MONO_TYPE_U:
962 return TRUE;
963 case MONO_TYPE_OBJECT:
964 case MONO_TYPE_STRING:
965 case MONO_TYPE_CLASS:
966 case MONO_TYPE_SZARRAY:
967 case MONO_TYPE_ARRAY:
968 return FALSE;
969 case MONO_TYPE_VALUETYPE:
970 if (t->data.klass->enumtype)
971 return is_regsize_var (t->data.klass->enum_basetype);
972 return FALSE;
973 }
974 return FALSE;
975 }
976
977 /*========================= End of Function ========================*/
978
979 /*------------------------------------------------------------------*/
980 /* */
981 /* Name - mono_arch_get_allocatable_int_vars */
982 /* */
983 /* Function - */
984 /* */
985 /*------------------------------------------------------------------*/
986
987 GList *
988 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
989 {
990 GList *vars = NULL;
991 int i;
992
993 for (i = 0; i < cfg->num_varinfo; i++) {
994 MonoInst *ins = cfg->varinfo [i];
995 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
996
997 /* unused vars */
998 if (vmv->range.first_use.abs_pos > vmv->range.last_use.abs_pos)
999 continue;
1000
1001 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT) || (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
1002 continue;
1003
1004 /* we can only allocate 32 bit values */
1005 if (is_regsize_var (ins->inst_vtype)) {
1006 g_assert (MONO_VARINFO (cfg, i)->reg == -1);
1007 g_assert (i == vmv->idx);
1008 vars = mono_varlist_insert_sorted (cfg, vars, vmv, FALSE);
1009 }
1010 }
1011
1012 return vars;
1013 }
1014
1015 /*========================= End of Function ========================*/
1016
1017 /*------------------------------------------------------------------*/
1018 /* */
1019 /* Name - mono_arch_global_int_regs */
1020 /* */
1021 /* Function - Return a list of usable integer registers. */
1022 /* */
1023 /*------------------------------------------------------------------*/
1024
1025 GList *
1026 mono_arch_get_global_int_regs (MonoCompile *cfg)
1027 {
1028 GList *regs = NULL;
1029 int i, top = 12;
1030
1031 for (i = 3; i < top; ++i)
1032 regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
1033
1034 return regs;
1035 }
1036
1037 /*========================= End of Function ========================*/
1038
1039 /*------------------------------------------------------------------*/
1040 /* */
1041 /* Name - mono_arch_flush_icache */
1042 /* */
1043 /* Function - Flush the CPU icache. */
1044 /* */
1045 /*------------------------------------------------------------------*/
1046
1047 void
1048 mono_arch_flush_icache (guint8 *code, gint size)
1049 {
1050 }
1051
1052 /*========================= End of Function ========================*/
1053
1054 /*------------------------------------------------------------------*/
1055 /* */
1056 /* Name - add_general */
1057 /* */
1058 /* Function - Determine code and stack size incremements for a */
1059 /* parameter. */
1060 /* */
1061 /*------------------------------------------------------------------*/
1062
1063 static void inline
1064 add_general (guint *gr, size_data *sz, ArgInfo *ainfo, gboolean simple)
1065 {
1066 if (simple) {
1067 if (*gr > S390_LAST_ARG_REG) {
1068 sz->stack_size = S390_ALIGN(sz->stack_size, sizeof(long));
1069 ainfo->offset = sz->stack_size;
1070 ainfo->reg = STK_BASE;
1071 ainfo->regtype = RegTypeBase;
1072 sz->stack_size += sizeof(int);
1073 sz->code_size += 12;
1074 } else {
1075 ainfo->reg = *gr;
1076 sz->code_size += 8;
1077 }
1078 } else {
1079 if (*gr > S390_LAST_ARG_REG - 1) {
1080 sz->stack_size = S390_ALIGN(sz->stack_size, S390_STACK_ALIGNMENT);
1081 ainfo->offset = sz->stack_size;
1082 ainfo->reg = STK_BASE;
1083 ainfo->regtype = RegTypeBase;
1084 sz->stack_size += sizeof(long long);
1085 sz->code_size += 10;
1086 } else {
1087 ainfo->reg = *gr;
1088 sz->code_size += 8;
1089 }
1090 (*gr) ++;
1091 }
1092 (*gr) ++;
1093 }
1094
1095 /*========================= End of Function ========================*/
1096
1097 /*------------------------------------------------------------------*/
1098 /* */
1099 /* Name - calculate_sizes */
1100 /* */
1101 /* Function - Determine the amount of space required for code */
1102 /* and stack. In addition determine starting points */
1103 /* for stack-based parameters, and area for struct- */
1104 /* ures being returned on the stack. */
1105 /* */
1106 /*------------------------------------------------------------------*/
1107
1108 static CallInfo *
1109 calculate_sizes (MonoMethodSignature *sig, size_data *sz,
1110 gboolean string_ctor)
1111 {
1112 guint i, fr, gr, size, nWords;
1113 int nParm = sig->hasthis + sig->param_count;
1114 guint32 simpletype, align;
1115 CallInfo *cinfo = g_malloc0 (sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1116
1117 fr = 0;
1118 gr = s390_r2;
1119 cinfo->struct_ret = 0;
1120 sz->retStruct = 0;
1121 sz->stack_size = S390_MINIMAL_STACK_SIZE;
1122 sz->code_size = 0;
1123 sz->local_size = 0;
1124
1125 nParm = 0;
1126 /*----------------------------------------------------------*/
1127 /* We determine the size of the return code/stack in case we*/
1128 /* need to reserve a register to be used to address a stack */
1129 /* area that the callee will use. */
1130 /*----------------------------------------------------------*/
1131
1132 // if (sig->ret->byref || string_ctor) {
1133 // sz->code_size += 8;
1134 // add_general (&gr, sz, cinfo->args+nParm, TRUE);
1135 // cinfo->args[nParm].size = sizeof(gpointer);
1136 // nParm++;
1137 // } else {
1138 {
1139 simpletype = sig->ret->type;
1140 enum_retvalue:
1141 switch (simpletype) {
1142 case MONO_TYPE_BOOLEAN:
1143 case MONO_TYPE_I1:
1144 case MONO_TYPE_U1:
1145 case MONO_TYPE_I2:
1146 case MONO_TYPE_U2:
1147 case MONO_TYPE_CHAR:
1148 case MONO_TYPE_I4:
1149 case MONO_TYPE_U4:
1150 case MONO_TYPE_I:
1151 case MONO_TYPE_U:
1152 case MONO_TYPE_CLASS:
1153 case MONO_TYPE_OBJECT:
1154 case MONO_TYPE_SZARRAY:
1155 case MONO_TYPE_ARRAY:
1156 case MONO_TYPE_PTR:
1157 case MONO_TYPE_STRING:
1158 cinfo->ret.reg = s390_r2;
1159 sz->code_size += 4;
1160 break;
1161 case MONO_TYPE_R4:
1162 case MONO_TYPE_R8:
1163 cinfo->ret.reg = s390_f0;
1164 sz->code_size += 4;
1165 break;
1166 case MONO_TYPE_I8:
1167 case MONO_TYPE_U8:
1168 cinfo->ret.reg = s390_r2;
1169 sz->code_size += 4;
1170 break;
1171 case MONO_TYPE_VALUETYPE:
1172 if (sig->ret->data.klass->enumtype) {
1173 simpletype = sig->ret->data.klass->enum_basetype->type;
1174 goto enum_retvalue;
1175 }
1176 if (sig->pinvoke)
1177 size = mono_class_native_size (sig->ret->data.klass, &align);
1178 else
1179 size = mono_class_value_size (sig->ret->data.klass, &align);
1180 cinfo->ret.reg = s390_r2;
1181 cinfo->struct_ret = 1;
1182 cinfo->ret.size = size;
1183 cinfo->ret.vtsize = size;
1184 cinfo->ret.offset = sz->stack_size;
1185 sz->stack_size += S390_ALIGN(size, align);
1186 gr++;
1187 break;
1188 case MONO_TYPE_TYPEDBYREF:
1189 case MONO_TYPE_VOID:
1190 break;
1191 default:
1192 g_error ("Can't handle as return value 0x%x", sig->ret->type);
1193 }
1194 }
1195
1196 if (sig->hasthis) {
1197 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1198 cinfo->args[nParm].size = sizeof(gpointer);
1199 nParm++;
1200 }
1201
1202 /*----------------------------------------------------------*/
1203 /* We determine the size of the parameter code and stack */
1204 /* requirements by checking the types and sizes of the */
1205 /* parameters. */
1206 /*----------------------------------------------------------*/
1207
1208 for (i = 0; i < sig->param_count; ++i) {
1209 if (sig->params [i]->byref) {
1210 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1211 cinfo->args[nParm].size = sizeof(gpointer);
1212 nParm++;
1213 continue;
1214 }
1215 simpletype = sig->params [i]->type;
1216 enum_calc_size:
1217 switch (simpletype) {
1218 case MONO_TYPE_BOOLEAN:
1219 case MONO_TYPE_I1:
1220 case MONO_TYPE_U1:
1221 cinfo->args[nParm].size = sizeof(char);
1222 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1223 nParm++;
1224 break;
1225 case MONO_TYPE_I2:
1226 case MONO_TYPE_U2:
1227 case MONO_TYPE_CHAR:
1228 cinfo->args[nParm].size = sizeof(short);
1229 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1230 nParm++;
1231 break;
1232 case MONO_TYPE_I4:
1233 case MONO_TYPE_U4:
1234 cinfo->args[nParm].size = sizeof(int);
1235 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1236 nParm++;
1237 break;
1238 case MONO_TYPE_I:
1239 case MONO_TYPE_U:
1240 case MONO_TYPE_PTR:
1241 case MONO_TYPE_CLASS:
1242 case MONO_TYPE_OBJECT:
1243 case MONO_TYPE_STRING:
1244 case MONO_TYPE_SZARRAY:
1245 case MONO_TYPE_ARRAY:
1246 cinfo->args[nParm].size = sizeof(gpointer);
1247 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1248 nParm++;
1249 break;
1250 case MONO_TYPE_VALUETYPE:
1251 if (sig->params [i]->data.klass->enumtype) {
1252 simpletype = sig->params [i]->data.klass->enum_basetype->type;
1253 goto enum_calc_size;
1254 }
1255 if (sig->pinvoke)
1256 size = mono_class_native_size (sig->params [i]->data.klass, &align);
1257 else
1258 size = mono_class_value_size (sig->params [i]->data.klass, &align);
1259 nWords = (size + sizeof(gpointer) - 1) /
1260 sizeof(gpointer);
1261
1262 cinfo->args[nParm].vtsize = 0;
1263 cinfo->args[nParm].size = 0;
1264 cinfo->args[nParm].offparm = sz->local_size;
1265
1266 switch (size) {
1267 /*----------------------------------*/
1268 /* On S/390, structures of size 1, */
1269 /* 2, 4, and 8 bytes are passed in */
1270 /* (a) register(s). */
1271 /*----------------------------------*/
1272 case 0:
1273 case 1:
1274 case 2:
1275 case 4:
1276 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1277 // cinfo->args[nParm].size = sizeof(int);
1278 cinfo->args[nParm].size = size;
1279 cinfo->args[nParm].regtype = RegTypeStructByVal;
1280 nParm++;
1281 sz->local_size += sizeof(long);
1282 break;
1283 case 8:
1284 add_general(&gr, sz, cinfo->args+nParm, FALSE);
1285 cinfo->args[nParm].size = sizeof(long long);
1286 cinfo->args[nParm].regtype = RegTypeStructByVal;
1287 nParm++;
1288 sz->local_size += sizeof(long);
1289 break;
1290 default:
1291 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1292 cinfo->args[nParm].size = sizeof(int);
1293 cinfo->args[nParm].regtype = RegTypeStructByAddr;
1294 cinfo->args[nParm].vtsize = size;
1295 sz->code_size += 40;
1296 sz->local_size += size;
1297 if (cinfo->args[nParm].reg == STK_BASE)
1298 sz->local_size += sizeof(gpointer);
1299 nParm++;
1300 }
1301 break;
1302 case MONO_TYPE_I8:
1303 case MONO_TYPE_U8:
1304 cinfo->args[nParm].size = sizeof(long long);
1305 add_general (&gr, sz, cinfo->args+nParm, FALSE);
1306 nParm++;
1307 break;
1308 case MONO_TYPE_R4:
1309 cinfo->args[nParm].size = sizeof(float);
1310 if (fr <= S390_LAST_FPARG_REG) {
1311 cinfo->args[nParm].regtype = RegTypeFP;
1312 cinfo->args[nParm].reg = fr;
1313 sz->code_size += 4;
1314 fr += 2;
1315 }
1316 else {
1317 cinfo->args[nParm].offset = sz->stack_size;
1318 cinfo->args[nParm].reg = STK_BASE;
1319 cinfo->args[nParm].regtype = RegTypeBase;
1320 sz->code_size += 4;
1321 sz->stack_size += sizeof(float);
1322 }
1323 nParm++;
1324 break;
1325 case MONO_TYPE_R8:
1326 cinfo->args[nParm].size = sizeof(double);
1327 if (fr <= S390_LAST_FPARG_REG) {
1328 cinfo->args[nParm].regtype = RegTypeFP;
1329 cinfo->args[nParm].reg = fr;
1330 sz->code_size += 4;
1331 fr += 2;
1332 } else {
1333 // sz->stack_size = S390_ALIGN(sz->stack_size,
1334 // S390_STACK_ALIGNMENT);
1335 cinfo->args[nParm].offset = sz->stack_size;
1336 cinfo->args[nParm].reg = STK_BASE;
1337 cinfo->args[nParm].regtype = RegTypeBase;
1338 sz->code_size += 4;
1339 sz->stack_size += sizeof(double);
1340 }
1341 nParm++;
1342 break;
1343 default:
1344 g_error ("Can't trampoline 0x%x", sig->params [i]->type);
1345 }
1346 }
1347
1348
1349 /* align stack size */
1350 cinfo->stack_usage = S390_ALIGN(sz->stack_size+sz->local_size,
1351 S390_STACK_ALIGNMENT);
1352 return (cinfo);
1353 }
1354
1355 /*========================= End of Function ========================*/
1356
1357 /*------------------------------------------------------------------*/
1358 /* */
1359 /* Name - mono_arch_allocate_vars */
1360 /* */
1361 /* Function - Set var information according to the calling */
1362 /* convention for S/390. The local var stuff should */
1363 /* most likely be split in another method. */
1364 /* */
1365 /* Parameter - @m - Compile unit. */
1366 /* */
1367 /*------------------------------------------------------------------*/
1368
1369 void
1370 mono_arch_allocate_vars (MonoCompile *m)
1371 {
1372 MonoMethodSignature *sig;
1373 MonoMethodHeader *header;
1374 MonoInst *inst;
1375 CallInfo *cinfo;
1376 size_data sz;
1377 int iParm, iVar, offset, size, align, curinst;
1378 int frame_reg = STK_BASE;
1379 int sArg, eArg;
1380
1381 header = ((MonoMethodNormal *)m->method)->header;
1382
1383 /*
1384 * We use the frame register also for any method that has
1385 * filter clauses. This way, when the handlers are called,
1386 * the code will reference local variables using the frame reg instead of
1387 * the stack pointer: if we had to restore the stack pointer, we'd
1388 * corrupt the method frames that are already on the stack (since
1389 * filters get called before stack unwinding happens) when the filter
1390 * code would call any method.
1391 */
1392 if ((m->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1393 // if (m->flags & MONO_CFG_HAS_ALLOCA)
1394 frame_reg = s390_r11;
1395
1396 m->frame_reg = frame_reg;
1397
1398 if (frame_reg != STK_BASE)
1399 m->used_int_regs |= 1 << frame_reg;
1400
1401 sig = m->method->signature;
1402
1403 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1404
1405 if (cinfo->struct_ret) {
1406 m->ret->opcode = OP_REGVAR;
1407 m->ret->inst_c0 = s390_r2;
1408 } else {
1409 /* FIXME: handle long and FP values */
1410 switch (sig->ret->type) {
1411 case MONO_TYPE_VOID:
1412 break;
1413 default:
1414 m->ret->opcode = OP_REGVAR;
1415 m->ret->dreg = s390_r2;
1416 break;
1417 }
1418 }
1419
1420 /*--------------------------------------------------------------*/
1421 /* local vars are at a positive offset from the stack pointer */
1422 /* */
1423 /* also note that if the function uses alloca, we use s390_r11 */
1424 /* to point at the local variables. */
1425 /* add parameter area size for called functions */
1426 /*--------------------------------------------------------------*/
1427 offset = (m->param_area + S390_MINIMAL_STACK_SIZE);
1428
1429 if (cinfo->struct_ret) {
1430 inst = m->ret;
1431 offset = S390_ALIGN(offset, sizeof(gpointer));
1432 inst->inst_offset = offset;
1433 inst->opcode = OP_REGOFFSET;
1434 inst->inst_basereg = frame_reg;
1435 offset += sizeof(gpointer);
1436 }
1437
1438 if (sig->hasthis) {
1439 inst = m->varinfo [0];
1440 if (inst->opcode != OP_REGVAR) {
1441 inst->opcode = OP_REGOFFSET;
1442 inst->inst_basereg = frame_reg;
1443 offset = S390_ALIGN(offset, sizeof(gpointer));
1444 inst->inst_offset = offset;
1445 offset += sizeof (gpointer);
1446 }
1447 curinst = sArg = 1;
1448 } else {
1449 curinst = sArg = 0;
1450 }
1451
1452 eArg = sig->param_count + sArg;
1453
1454 for (iParm = sArg; iParm < eArg; ++iParm) {
1455 inst = m->varinfo [curinst];
1456 if (inst->opcode != OP_REGVAR) {
1457 switch (cinfo->args[iParm].regtype) {
1458 case RegTypeStructByAddr :
1459 inst->opcode = OP_S390_LOADARG;
1460 inst->inst_basereg = frame_reg;
1461 // size = sizeof(long);
1462 size = abs(cinfo->args[iParm].vtsize);
1463 offset = S390_ALIGN(offset, size);
1464 inst->inst_offset = offset;
1465 break;
1466 case RegTypeStructByVal :
1467 inst->opcode = OP_S390_ARGPTR;
1468 inst->inst_basereg = frame_reg;
1469 size = cinfo->args[iParm].size;
1470 offset = S390_ALIGN(offset, size);
1471 inst->inst_offset = offset;
1472 break;
1473 default :
1474 if (cinfo->args[iParm].reg != STK_BASE) {
1475 inst->opcode = OP_REGOFFSET;
1476 inst->inst_basereg = frame_reg;
1477 size = (cinfo->args[iParm].size < 8
1478 ? sizeof(long)
1479 : sizeof(long long));
1480 offset = S390_ALIGN(offset, size);
1481 inst->inst_offset = offset;
1482 } else {
1483 inst->opcode = OP_S390_STKARG;
1484 inst->inst_basereg = frame_reg;
1485 size = (cinfo->args[iParm].size < 4
1486 ? 4 - cinfo->args[iParm].size
1487 : 0);
1488 inst->inst_offset = cinfo->args[iParm].offset +
1489 size;
1490 // inst->unused = stackOffset;
1491 inst->unused = 0;
1492 size = sizeof(long);
1493 }
1494 }
1495 offset += size;
1496 }
1497 curinst++;
1498 }
1499
1500 curinst = m->locals_start;
1501 for (iVar = curinst; iVar < m->num_varinfo; ++iVar) {
1502 inst = m->varinfo [iVar];
1503 if (inst->opcode == OP_REGVAR)
1504 continue;
1505
1506 /* inst->unused indicates native sized value types, this is used by the
1507 * pinvoke wrappers when they call functions returning structure */
1508 if (inst->unused && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1509 size = mono_class_native_size (inst->inst_vtype->data.klass, &align);
1510 else
1511 size = mono_type_size (inst->inst_vtype, &align);
1512
1513 offset = S390_ALIGN(offset, align);
1514 inst->inst_offset = offset;
1515 inst->opcode = OP_REGOFFSET;
1516 inst->inst_basereg = frame_reg;
1517 offset += size;
1518 //DEBUG (g_print("allocating local %d to %d\n", iVar, inst->inst_offset));
1519 }
1520
1521 // if (sig->hasthis)
1522 // curinst = sArg = 1;
1523 // else
1524 // curinst = sArg = 0;
1525 //
1526
1527 /*------------------------------------------------------*/
1528 /* Allow space for the trace method stack area if needed*/
1529 /*------------------------------------------------------*/
1530 if (mono_jit_trace_calls != NULL && mono_trace_eval (m))
1531 offset += S390_TRACE_STACK_SIZE;
1532
1533 /*------------------------------------------------------*/
1534 /* Reserve space to save LMF and caller saved registers */
1535 /*------------------------------------------------------*/
1536 if (m->method->save_lmf)
1537 offset += sizeof (MonoLMF);
1538
1539 /*------------------------------------------------------*/
1540 /* align the offset */
1541 /*------------------------------------------------------*/
1542 m->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1543
1544 }
1545
1546 /*========================= End of Function ========================*/
1547
1548 /*------------------------------------------------------------------*/
1549 /* */
1550 /* Name - mono_arch_call_opcode */
1551 /* */
1552 /* Function - Take the arguments and generate the arch-specific */
1553 /* instructions to properly call the function. This */
1554 /* includes pushing, moving argments to the correct */
1555 /* etc. */
1556 /* */
1557 /* Note - FIXME: We need an alignment solution for */
1558 /* enter_method and mono_arch_call_opcode, currently */
1559 /* alignment in mono_arch_call_opcode is computed */
1560 /* without arch_get_argument_info. */
1561 /* */
1562 /*------------------------------------------------------------------*/
1563
1564 MonoCallInst*
1565 mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb, MonoCallInst *call, int is_virtual) {
1566 MonoInst *arg, *in;
1567 MonoMethodSignature *sig;
1568 int i, n, lParamArea;
1569 CallInfo *cinfo;
1570 ArgInfo *ainfo;
1571 size_data sz;
1572
1573 sig = call->signature;
1574 n = sig->param_count + sig->hasthis;
1575 DEBUG (g_print ("Call requires: %d parameters\n",n));
1576
1577 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1578
1579 call->stack_usage = cinfo->stack_usage;
1580 lParamArea = cinfo->stack_usage - S390_MINIMAL_STACK_SIZE;
1581 cfg->param_area = MAX (cfg->param_area, lParamArea);
1582 cfg->flags |= MONO_CFG_HAS_CALLS;
1583 /*----------------------------------------------------------*/
1584 /* should set more info in call, such as the stack space */
1585 /* used by the args that needs to be added back to esp */
1586 /*----------------------------------------------------------*/
1587
1588 if (cinfo->struct_ret)
1589 call->used_iregs |= 1 << cinfo->struct_ret;
1590
1591 for (i = 0; i < n; ++i) {
1592 ainfo = cinfo->args + i;
1593 DEBUG (g_print ("Parameter %d - Register: %d Type: %d\n",
1594 i+1,ainfo->reg,ainfo->regtype));
1595 if (is_virtual && i == 0) {
1596 /* the argument will be attached to the call instrucion */
1597 in = call->args [i];
1598 call->used_iregs |= 1 << ainfo->reg;
1599 } else {
1600 MONO_INST_NEW (cfg, arg, OP_OUTARG);
1601 in = call->args [i];
1602 arg->cil_code = in->cil_code;
1603 arg->inst_left = in;
1604 arg->type = in->type;
1605 /* prepend, we'll need to reverse them later */
1606 arg->next = call->out_args;
1607 call->out_args = arg;
1608 if (ainfo->regtype == RegTypeGeneral) {
1609 arg->unused = ainfo->reg;
1610 call->used_iregs |= 1 << ainfo->reg;
1611 if (arg->type == STACK_I8)
1612 call->used_iregs |= 1 << (ainfo->reg + 1);
1613 } else if (ainfo->regtype == RegTypeStructByAddr) {
1614 call->used_iregs |= 1 << ainfo->reg;
1615 arg->sreg1 = ainfo->reg;
1616 arg->opcode = OP_OUTARG_VT;
1617 arg->unused = -ainfo->vtsize;
1618 arg->inst_imm = ainfo->offset;
1619 arg->sreg2 = ainfo->offparm + S390_MINIMAL_STACK_SIZE;
1620 } else if (ainfo->regtype == RegTypeStructByVal) {
1621 if (ainfo->reg != STK_BASE) {
1622 switch (ainfo->size) {
1623 case 0:
1624 case 1:
1625 case 2:
1626 case 4:
1627 call->used_iregs |= 1 << ainfo->reg;
1628 break;
1629 case 8:
1630 call->used_iregs |= 1 << ainfo->reg;
1631 call->used_iregs |= 1 << (ainfo->reg+1);
1632 break;
1633 default:
1634 call->used_iregs |= 1 << ainfo->reg;
1635 }
1636 }
1637 arg->sreg1 = ainfo->reg;
1638 arg->opcode = OP_OUTARG_VT;
1639 arg->unused = ainfo->size;
1640 arg->inst_imm = ainfo->offset;
1641 arg->sreg2 = ainfo->offparm + S390_MINIMAL_STACK_SIZE;
1642 } else if (ainfo->regtype == RegTypeBase) {
1643 arg->opcode = OP_OUTARG;
1644 arg->unused = ainfo->reg | (ainfo->size << 8);
1645 arg->inst_imm = ainfo->offset;
1646 call->used_fregs |= 1 << ainfo->reg;
1647 } else if (ainfo->regtype == RegTypeFP) {
1648 // arg->opcode = OP_OUTARG_R8;
1649 // arg->unused = ainfo->reg;
1650 // call->used_fregs |= 1 << ainfo->reg;
1651 // if (ainfo->size == 4) {
1652 // /* we reduce the precision */
1653 // MonoInst *conv;
1654 // MONO_INST_NEW (cfg, conv, OP_FCONV_TO_R4);
1655 // conv->inst_left = arg->inst_left;
1656 // arg->inst_left = conv;
1657 // }
1658 arg->unused = ainfo->reg;
1659 call->used_fregs |= 1 << ainfo->reg;
1660 if (ainfo->size == 4) {
1661 MonoInst *conv;
1662 arg->opcode = OP_OUTARG_R4;
1663 MONO_INST_NEW (cfg, conv, OP_FCONV_TO_R4);
1664 conv->inst_left = arg->inst_left;
1665 arg->inst_left = conv;
1666 }
1667 else
1668 arg->opcode = OP_OUTARG_R8;
1669 } else {
1670 g_assert_not_reached ();
1671 }
1672 }
1673 }
1674 /*
1675 * Reverse the call->out_args list.
1676 */
1677 {
1678 MonoInst *prev = NULL, *list = call->out_args, *next;
1679 while (list) {
1680 next = list->next;
1681 list->next = prev;
1682 prev = list;
1683 list = next;
1684 }
1685 call->out_args = prev;
1686 }
1687
1688 g_free (cinfo);
1689 return call;
1690 }
1691
1692 /*========================= End of Function ========================*/
1693
1694 /*------------------------------------------------------------------*/
1695 /* */
1696 /* Name - mono_arch_instrument_mem_needs */
1697 /* */
1698 /* Function - Allow tracing to work with this interface (with */
1699 /* an optional argument). */
1700 /* */
1701 /*------------------------------------------------------------------*/
1702
1703 void
1704 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
1705 {
1706 /* no stack room needed now (may be needed for FASTCALL-trace support) */
1707 *stack = 0;
1708 /* split prolog-epilog requirements? */
1709 *code = 50; /* max bytes needed: check this number */
1710 }
1711
1712 /*========================= End of Function ========================*/
1713
1714 /*------------------------------------------------------------------*/
1715 /* */
1716 /* Name - mono_arch_instrument_prolog */
1717 /* */
1718 /* Function - Create an "instrumented" prolog. */
1719 /* */
1720 /*------------------------------------------------------------------*/
1721
1722 void*
1723 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
1724 gboolean enable_arguments)
1725 {
1726 guchar *code = p;
1727 int parmOffset,
1728 fpOffset;
1729
1730 parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1731 if (cfg->method->save_lmf)
1732 parmOffset -= sizeof(MonoLMF);
1733 fpOffset = parmOffset + (5*sizeof(gint32));
1734
1735 s390_stm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1736 s390_std (code, s390_f0, 0, STK_BASE, fpOffset);
1737 s390_std (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1738 s390_std (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1739 s390_basr (code, s390_r13, 0);
1740 s390_j (code, 6);
1741 s390_word (code, cfg->method);
1742 s390_word (code, func);
1743 s390_l (code, s390_r2, 0, s390_r13, 4);
1744 s390_la (code, s390_r3, 0, STK_BASE, parmOffset);
1745 s390_lr (code, s390_r4, STK_BASE);
1746 s390_ahi (code, s390_r4, cfg->stack_usage);
1747 s390_l (code, s390_r1, 0, s390_r13, 8);
1748 s390_basr (code, s390_r14, s390_r1);
1749 s390_ld (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1750 s390_ld (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1751 s390_ld (code, s390_f0, 0, STK_BASE, fpOffset);
1752 s390_lm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1753
1754 return code;
1755 }
1756
1757 /*========================= End of Function ========================*/
1758
1759 /*------------------------------------------------------------------*/
1760 /* */
1761 /* Name - mono_arch_instrument_epilog */
1762 /* */
1763 /* Function - Create an epilog that will handle the returned */
1764 /* values used in instrumentation. */
1765 /* */
1766 /*------------------------------------------------------------------*/
1767
1768 void*
1769 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
1770 {
1771 guchar *code = p;
1772 int save_mode = SAVE_NONE,
1773 saveOffset;
1774 MonoMethod *method = cfg->method;
1775 int rtype = method->signature->ret->type;
1776
1777 saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1778 if (method->save_lmf)
1779 saveOffset -= sizeof(MonoLMF);
1780
1781 handle_enum:
1782 switch (rtype) {
1783 case MONO_TYPE_VOID:
1784 /* special case string .ctor icall */
1785 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
1786 save_mode = SAVE_ONE;
1787 else
1788 save_mode = SAVE_NONE;
1789 break;
1790 case MONO_TYPE_I8:
1791 case MONO_TYPE_U8:
1792 save_mode = SAVE_TWO;
1793 break;
1794 case MONO_TYPE_R4:
1795 case MONO_TYPE_R8:
1796 save_mode = SAVE_FP;
1797 break;
1798 case MONO_TYPE_VALUETYPE:
1799 if (method->signature->ret->data.klass->enumtype) {
1800 rtype = method->signature->ret->data.klass->enum_basetype->type;
1801 goto handle_enum;
1802 }
1803 save_mode = SAVE_STRUCT;
1804 break;
1805 default:
1806 save_mode = SAVE_ONE;
1807 break;
1808 }
1809
1810 switch (save_mode) {
1811 case SAVE_TWO:
1812 s390_stm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1813 if (enable_arguments) {
1814 s390_lr (code, s390_r4, s390_r3);
1815 s390_lr (code, s390_r3, s390_r2);
1816 }
1817 break;
1818 case SAVE_ONE:
1819 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1820 if (enable_arguments) {
1821 s390_lr (code, s390_r3, s390_r2);
1822 }
1823 break;
1824 case SAVE_FP:
1825 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1826 if (enable_arguments) {
1827 /* FIXME: what reg? */
1828 s390_ldr (code, s390_f2, s390_f0);
1829 s390_lm (code, s390_r3, s390_r4, cfg->frame_reg, saveOffset);
1830 }
1831 break;
1832 case SAVE_STRUCT:
1833 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1834 if (enable_arguments) {
1835 s390_l (code, s390_r3, 0, cfg->frame_reg,
1836 S390_MINIMAL_STACK_SIZE+cfg->param_area);
1837 }
1838 break;
1839 case SAVE_NONE:
1840 default:
1841 break;
1842 }
1843
1844 s390_basr (code, s390_r13, 0);
1845 s390_j (code, 6);
1846 s390_word (code, cfg->method);
1847 s390_word (code, func);
1848 s390_l (code, s390_r2, 0, s390_r13, 4);
1849 s390_l (code, s390_r1, 0, s390_r13, 8);
1850 s390_basr (code, s390_r14, s390_r1);
1851
1852 switch (save_mode) {
1853 case SAVE_TWO:
1854 s390_lm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1855 break;
1856 case SAVE_ONE:
1857 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1858 break;
1859 case SAVE_FP:
1860 s390_ld (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1861 break;
1862 case SAVE_STRUCT:
1863 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1864 break;
1865 case SAVE_NONE:
1866 default:
1867 break;
1868 }
1869
1870 return code;
1871 }
1872
1873 /*========================= End of Function ========================*/
1874
1875 /*------------------------------------------------------------------*/
1876 /* */
1877 /* Name - peephole_pass */
1878 /* */
1879 /* Function - Form a peephole pass at the code looking for */
1880 /* simple optimizations. */
1881 /* */
1882 /*------------------------------------------------------------------*/
1883
1884 static void
1885 peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
1886 {
1887 MonoInst *ins, *last_ins = NULL;
1888 ins = bb->code;
1889
1890 while (ins) {
1891
1892 switch (ins->opcode) {
1893 case OP_MUL_IMM:
1894 /* remove unnecessary multiplication with 1 */
1895 if (ins->inst_imm == 1) {
1896 if (ins->dreg != ins->sreg1) {
1897 ins->opcode = OP_MOVE;
1898 } else {
1899 last_ins->next = ins->next;
1900 ins = ins->next;
1901 continue;
1902 }
1903 }
1904 break;
1905 case OP_LOAD_MEMBASE:
1906 case OP_LOADI4_MEMBASE:
1907 /*
1908 * OP_STORE_MEMBASE_REG reg, offset(basereg)
1909 * OP_LOAD_MEMBASE offset(basereg), reg
1910 */
1911 if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG
1912 || last_ins->opcode == OP_STORE_MEMBASE_REG) &&
1913 ins->inst_basereg == last_ins->inst_destbasereg &&
1914 ins->inst_offset == last_ins->inst_offset) {
1915 if (ins->dreg == last_ins->sreg1) {
1916 last_ins->next = ins->next;
1917 ins = ins->next;
1918 continue;
1919 } else {
1920 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1921 ins->opcode = OP_MOVE;
1922 ins->sreg1 = last_ins->sreg1;
1923 }
1924
1925 /*
1926 * Note: reg1 must be different from the basereg in the second load
1927 * OP_LOAD_MEMBASE offset(basereg), reg1
1928 * OP_LOAD_MEMBASE offset(basereg), reg2
1929 * -->
1930 * OP_LOAD_MEMBASE offset(basereg), reg1
1931 * OP_MOVE reg1, reg2
1932 */
1933 } if (last_ins && (last_ins->opcode == OP_LOADI4_MEMBASE
1934 || last_ins->opcode == OP_LOAD_MEMBASE) &&
1935 ins->inst_basereg != last_ins->dreg &&
1936 ins->inst_basereg == last_ins->inst_basereg &&
1937 ins->inst_offset == last_ins->inst_offset) {
1938
1939 if (ins->dreg == last_ins->dreg) {
1940 last_ins->next = ins->next;
1941 ins = ins->next;
1942 continue;
1943 } else {
1944 ins->opcode = OP_MOVE;
1945 ins->sreg1 = last_ins->dreg;
1946 }
1947
1948 //g_assert_not_reached ();
1949
1950 #if 0
1951 /*
1952 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
1953 * OP_LOAD_MEMBASE offset(basereg), reg
1954 * -->
1955 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
1956 * OP_ICONST reg, imm
1957 */
1958 } else if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_IMM
1959 || last_ins->opcode == OP_STORE_MEMBASE_IMM) &&
1960 ins->inst_basereg == last_ins->inst_destbasereg &&
1961 ins->inst_offset == last_ins->inst_offset) {
1962 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1963 ins->opcode = OP_ICONST;
1964 ins->inst_c0 = last_ins->inst_imm;
1965 g_assert_not_reached (); // check this rule
1966 #endif
1967 }
1968 break;
1969 case OP_LOADU1_MEMBASE:
1970 case OP_LOADI1_MEMBASE:
1971 if (last_ins && (last_ins->opcode == OP_STOREI1_MEMBASE_REG) &&
1972 ins->inst_basereg == last_ins->inst_destbasereg &&
1973 ins->inst_offset == last_ins->inst_offset) {
1974 if (ins->dreg == last_ins->sreg1) {
1975 last_ins->next = ins->next;
1976 ins = ins->next;
1977 continue;
1978 } else {
1979 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1980 ins->opcode = OP_MOVE;
1981 ins->sreg1 = last_ins->sreg1;
1982 }
1983 }
1984 break;
1985 case OP_LOADU2_MEMBASE:
1986 case OP_LOADI2_MEMBASE:
1987 if (last_ins && (last_ins->opcode == OP_STOREI2_MEMBASE_REG) &&
1988 ins->inst_basereg == last_ins->inst_destbasereg &&
1989 ins->inst_offset == last_ins->inst_offset) {
1990 if (ins->dreg == last_ins->sreg1) {
1991 last_ins->next = ins->next;
1992 ins = ins->next;
1993 continue;
1994 } else {
1995 ins->opcode = OP_MOVE;
1996 ins->sreg1 = last_ins->sreg1;
1997 }
1998 }
1999 break;
2000 case CEE_CONV_I4:
2001 case CEE_CONV_U4:
2002 case OP_MOVE:
2003 /*
2004 * OP_MOVE reg, reg
2005 */
2006 if (ins->dreg == ins->sreg1) {
2007 if (last_ins)
2008 last_ins->next = ins->next;
2009 ins = ins->next;
2010 continue;
2011 }
2012 /*
2013 * OP_MOVE sreg, dreg
2014 * OP_MOVE dreg, sreg
2015 */
2016 if (last_ins && last_ins->opcode == OP_MOVE &&
2017 ins->sreg1 == last_ins->dreg &&
2018 ins->dreg == last_ins->sreg1) {
2019 last_ins->next = ins->next;
2020 ins = ins->next;
2021 continue;
2022 }
2023 break;
2024 }
2025 last_ins = ins;
2026 ins = ins->next;
2027 }
2028 bb->last_ins = last_ins;
2029 }
2030
2031 /*========================= End of Function ========================*/
2032
2033 /*------------------------------------------------------------------*/
2034 /* */
2035 /* Name - mono_spillvar_offset */
2036 /* */
2037 /* Function - Returns the offset used by spillvar. It allocates */
2038 /* a new spill variable if necessary. */
2039 /* */
2040 /*------------------------------------------------------------------*/
2041
2042 static int
2043 mono_spillvar_offset (MonoCompile *cfg, int spillvar)
2044 {
2045 MonoSpillInfo **si, *info;
2046 int i = 0;
2047
2048 si = &cfg->spill_info;
2049
2050 while (i <= spillvar) {
2051
2052 if (!*si) {
2053 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
2054 info->next = NULL;
2055 info->offset = cfg->stack_offset;
2056 cfg->stack_offset += sizeof (gpointer);
2057 }
2058
2059 if (i == spillvar)
2060 return (*si)->offset;
2061
2062 i++;
2063 si = &(*si)->next;
2064 }
2065
2066 g_assert_not_reached ();
2067 return 0;
2068 }
2069
2070 /*========================= End of Function ========================*/
2071
2072 /*------------------------------------------------------------------*/
2073 /* */
2074 /* Name - mono_spillvar_offset_float */
2075 /* */
2076 /* Function - */
2077 /* */
2078 /*------------------------------------------------------------------*/
2079
2080 static int
2081 mono_spillvar_offset_float (MonoCompile *cfg, int spillvar)
2082 {
2083 MonoSpillInfo **si, *info;
2084 int i = 0;
2085
2086 si = &cfg->spill_info_float;
2087
2088 while (i <= spillvar) {
2089
2090 if (!*si) {
2091 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
2092 info->next = NULL;
2093 cfg->stack_offset = S390_ALIGN(cfg->stack_offset, S390_STACK_ALIGNMENT);
2094 info->offset = cfg->stack_offset;
2095 cfg->stack_offset += sizeof (double);
2096 }
2097
2098 if (i == spillvar)
2099 return (*si)->offset;
2100
2101 i++;
2102 si = &(*si)->next;
2103 }
2104
2105 g_assert_not_reached ();
2106 return 0;
2107 }
2108
2109 /*========================= End of Function ========================*/
2110
2111 /*------------------------------------------------------------------*/
2112 /* */
2113 /* Name - print_ins */
2114 /* */
2115 /* Function - Decode and print the instruction for tracing. */
2116 /* */
2117 /*------------------------------------------------------------------*/
2118
2119 static void
2120 print_ins (int i, MonoInst *ins)
2121 {
2122 const char *spec = ins_spec [ins->opcode];
2123 g_print ("\t%-2d %s", i, mono_inst_name (ins->opcode));
2124 if (spec [MONO_INST_DEST]) {
2125 if (ins->dreg >= MONO_MAX_IREGS)
2126 g_print (" R%d <-", ins->dreg);
2127 else
2128 g_print (" %s <-", mono_arch_regname (ins->dreg));
2129 }
2130 if (spec [MONO_INST_SRC1]) {
2131 if (ins->sreg1 >= MONO_MAX_IREGS)
2132 g_print (" R%d", ins->sreg1);
2133 else
2134 g_print (" %s", mono_arch_regname (ins->sreg1));
2135 }
2136 if (spec [MONO_INST_SRC2]) {
2137 if (ins->sreg2 >= MONO_MAX_IREGS)
2138 g_print (" R%d", ins->sreg2);
2139 else
2140 g_print (" %s", mono_arch_regname (ins->sreg2));
2141 }
2142 if (spec [MONO_INST_CLOB])
2143 g_print (" clobbers: %c", spec [MONO_INST_CLOB]);
2144 g_print ("\n");
2145 }
2146
2147 /*========================= End of Function ========================*/
2148
2149 /*------------------------------------------------------------------*/
2150 /* */
2151 /* Name - print_regtrack. */
2152 /* */
2153 /* Function - */
2154 /* */
2155 /*------------------------------------------------------------------*/
2156
2157 static void
2158 print_regtrack (RegTrack *t, int num)
2159 {
2160 int i;
2161 char buf [32];
2162 const char *r;
2163
2164 for (i = 0; i < num; ++i) {
2165 if (!t [i].born_in)
2166 continue;
2167 if (i >= MONO_MAX_IREGS) {
2168 g_snprintf (buf, sizeof(buf), "R%d", i);
2169 r = buf;
2170 } else
2171 r = mono_arch_regname (i);
2172 g_print ("liveness: %s [%d - %d]\n", r, t [i].born_in, t[i].last_use);
2173 }
2174 }
2175
2176 /*========================= End of Function ========================*/
2177
2178 /*------------------------------------------------------------------*/
2179 /* */
2180 /* Name - inst_list_prepend */
2181 /* */
2182 /* Function - Prepend an instruction to the list. */
2183 /* */
2184 /*------------------------------------------------------------------*/
2185
2186 static inline InstList*
2187 inst_list_prepend (MonoMemPool *pool, InstList *list, MonoInst *data)
2188 {
2189 InstList *item = mono_mempool_alloc (pool, sizeof (InstList));
2190 item->data = data;
2191 item->prev = NULL;
2192 item->next = list;
2193 if (list)
2194 list->prev = item;
2195 return item;
2196 }
2197
2198 /*========================= End of Function ========================*/
2199
2200 /*------------------------------------------------------------------*/
2201 /* */
2202 /* Name - get_register_force_spilling */
2203 /* */
2204 /* Function - Force the spilling of the variable in the */
2205 /* symbolic register 'reg'. */
2206 /* */
2207 /*------------------------------------------------------------------*/
2208
2209 static int
2210 get_register_force_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, int reg)
2211 {
2212 MonoInst *load;
2213 int i, sel, spill;
2214
2215 sel = cfg->rs->iassign [reg];
2216 i = reg;
2217 spill = ++cfg->spill_count;
2218 cfg->rs->iassign [i] = -spill - 1;
2219 mono_regstate_free_int (cfg->rs, sel);
2220 /*----------------------------------------------------------*/
2221 /* we need to create a spill var and insert a load to sel */
2222 /* after the current instruction */
2223 /*----------------------------------------------------------*/
2224 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2225 load->dreg = sel;
2226 load->inst_basereg = cfg->frame_reg;
2227 load->inst_offset = mono_spillvar_offset (cfg, spill);
2228 if (item->prev) {
2229 while (ins->next != item->prev->data)
2230 ins = ins->next;
2231 }
2232 load->next = ins->next;
2233 ins->next = load;
2234 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n",
2235 spill, load->inst_offset, i, mono_arch_regname (sel)));
2236 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2237 g_assert (i == sel);
2238
2239 return sel;
2240 }
2241
2242 /*========================= End of Function ========================*/
2243
2244 /*------------------------------------------------------------------*/
2245 /* */
2246 /* Name - get_register_spilling */
2247 /* */
2248 /* Function - */
2249 /* */
2250 /*------------------------------------------------------------------*/
2251
2252 static int
2253 get_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2254 {
2255 MonoInst *load;
2256 int i, sel, spill;
2257
2258 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));
2259 /* exclude the registers in the current instruction */
2260 if (reg != ins->sreg1 &&
2261 (reg_is_freeable (ins->sreg1) ||
2262 (ins->sreg1 >= MONO_MAX_IREGS &&
2263 cfg->rs->iassign [ins->sreg1] >= 0))) {
2264 if (ins->sreg1 >= MONO_MAX_IREGS)
2265 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg1]);
2266 else
2267 regmask &= ~ (1 << ins->sreg1);
2268 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2269 }
2270 if (reg != ins->sreg2 &&
2271 (reg_is_freeable (ins->sreg2) ||
2272 (ins->sreg2 >= MONO_MAX_IREGS &&
2273 cfg->rs->iassign [ins->sreg2] >= 0))) {
2274 if (ins->sreg2 >= MONO_MAX_IREGS)
2275 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg2]);
2276 else
2277 regmask &= ~ (1 << ins->sreg2);
2278 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2279 }
2280 if (reg != ins->dreg && reg_is_freeable (ins->dreg)) {
2281 regmask &= ~ (1 << ins->dreg);
2282 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2283 }
2284
2285 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2286 g_assert (regmask); /* need at least a register we can free */
2287 sel = -1;
2288 /* we should track prev_use and spill the register that's farther */
2289 for (i = 0; i < MONO_MAX_IREGS; ++i) {
2290 if (regmask & (1 << i)) {
2291 sel = i;
2292 DEBUG (g_print ("selected register %s has assignment %d\n", mono_arch_regname (sel), cfg->rs->iassign [sel]));
2293 break;
2294 }
2295 }
2296 i = cfg->rs->isymbolic [sel];
2297 spill = ++cfg->spill_count;
2298 cfg->rs->iassign [i] = -spill - 1;
2299 mono_regstate_free_int (cfg->rs, sel);
2300 /* we need to create a spill var and insert a load to sel after the current instruction */
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", spill, load->inst_offset, i, mono_arch_regname (sel)));
2312 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2313 g_assert (i == sel);
2314
2315 return sel;
2316 }
2317
2318 /*========================= End of Function ========================*/
2319
2320 /*------------------------------------------------------------------*/
2321 /* */
2322 /* Name - get_float_register_spilling */
2323 /* */
2324 /* Function - */
2325 /* */
2326 /*------------------------------------------------------------------*/
2327
2328 static int
2329 get_float_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2330 {
2331 MonoInst *load;
2332 int i, sel, spill;
2333
2334 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));
2335 /* exclude the registers in the current instruction */
2336 if (reg != ins->sreg1 &&
2337 (freg_is_freeable (ins->sreg1) ||
2338 (ins->sreg1 >= MONO_MAX_FREGS &&
2339 cfg->rs->fassign [ins->sreg1] >= 0))) {
2340 if (ins->sreg1 >= MONO_MAX_FREGS)
2341 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg1]);
2342 else
2343 regmask &= ~ (1 << ins->sreg1);
2344 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2345 }
2346 if (reg != ins->sreg2 &&
2347 (freg_is_freeable (ins->sreg2) ||
2348 (ins->sreg2 >= MONO_MAX_FREGS &&
2349 cfg->rs->fassign [ins->sreg2] >= 0))) {
2350 if (ins->sreg2 >= MONO_MAX_FREGS)
2351 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg2]);
2352 else
2353 regmask &= ~ (1 << ins->sreg2);
2354 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2355 }
2356 if (reg != ins->dreg && freg_is_freeable (ins->dreg)) {
2357 regmask &= ~ (1 << ins->dreg);
2358 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2359 }
2360
2361 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2362 g_assert (regmask); /* need at least a register we can free */
2363 sel = -1;
2364 /* we should track prev_use and spill the register that's farther */
2365 for (i = 0; i < MONO_MAX_FREGS; ++i) {
2366 if (regmask & (1 << i)) {
2367 sel = i;
2368 DEBUG (g_print ("selected register %s has assignment %d\n",
2369 mono_arch_regname (sel), cfg->rs->fassign [sel]));
2370 break;
2371 }
2372 }
2373 i = cfg->rs->fsymbolic [sel];
2374 spill = ++cfg->spill_count;
2375 cfg->rs->fassign [i] = -spill - 1;
2376 mono_regstate_free_float(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_LOADR8_MEMBASE);
2379 load->dreg = sel;
2380 load->inst_basereg = cfg->frame_reg;
2381 load->inst_offset = mono_spillvar_offset_float (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_float (cfg->rs, 1 << sel);
2390 g_assert (i == sel);
2391
2392 return sel;
2393 }
2394
2395 /*========================= End of Function ========================*/
2396
2397 /*------------------------------------------------------------------*/
2398 /* */
2399 /* Name - create_copy_ins */
2400 /* */
2401 /* Function - Create an instruction to copy from reg to reg. */
2402 /* */
2403 /*------------------------------------------------------------------*/
2404
2405 static MonoInst*
2406 create_copy_ins (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2407 {
2408 MonoInst *copy;
2409 MONO_INST_NEW (cfg, copy, OP_MOVE);
2410 copy->dreg = dest;
2411 copy->sreg1 = src;
2412 if (ins) {
2413 copy->next = ins->next;
2414 ins->next = copy;
2415 }
2416 DEBUG (g_print ("\tforced copy from %s to %s\n",
2417 mono_arch_regname (src), mono_arch_regname (dest)));
2418 return copy;
2419 }
2420
2421 /*========================= End of Function ========================*/
2422
2423 /*------------------------------------------------------------------*/
2424 /* */
2425 /* Name - create_copy_ins_float */
2426 /* */
2427 /* Function - Create an instruction to copy from float reg to */
2428 /* float reg. */
2429 /* */
2430 /*------------------------------------------------------------------*/
2431
2432 static MonoInst*
2433 create_copy_ins_float (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2434 {
2435 MonoInst *copy;
2436 MONO_INST_NEW (cfg, copy, OP_FMOVE);
2437 copy->dreg = dest;
2438 copy->sreg1 = src;
2439 if (ins) {
2440 copy->next = ins->next;
2441 ins->next = copy;
2442 }
2443 DEBUG (g_print ("\tforced copy from %s to %s\n",
2444 mono_arch_regname (src), mono_arch_regname (dest)));
2445 return copy;
2446 }
2447
2448 /*========================= End of Function ========================*/
2449
2450 /*------------------------------------------------------------------*/
2451 /* */
2452 /* Name - create_spilled_store */
2453 /* */
2454 /* Function - Spill register to storage. */
2455 /* */
2456 /*------------------------------------------------------------------*/
2457
2458 static MonoInst*
2459 create_spilled_store (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2460 {
2461 MonoInst *store;
2462 MONO_INST_NEW (cfg, store, OP_STORE_MEMBASE_REG);
2463 store->sreg1 = reg;
2464 store->inst_destbasereg = cfg->frame_reg;
2465 store->inst_offset = mono_spillvar_offset (cfg, spill);
2466 if (ins) {
2467 store->next = ins->next;
2468 ins->next = store;
2469 }
2470 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2471 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2472 return store;
2473 }
2474
2475 /*========================= End of Function ========================*/
2476
2477 /*------------------------------------------------------------------*/
2478 /* */
2479 /* Name - create_spilled_store_float */
2480 /* */
2481 /* Function - Spill floating point register to storage. */
2482 /* */
2483 /*------------------------------------------------------------------*/
2484
2485 static MonoInst*
2486 create_spilled_store_float (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2487 {
2488 MonoInst *store;
2489 MONO_INST_NEW (cfg, store, OP_STORER8_MEMBASE_REG);
2490 store->sreg1 = reg;
2491 store->inst_destbasereg = cfg->frame_reg;
2492 store->inst_offset = mono_spillvar_offset_float (cfg, spill);
2493 if (ins) {
2494 store->next = ins->next;
2495 ins->next = store;
2496 }
2497 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2498 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2499 return store;
2500 }
2501
2502 /*========================= End of Function ========================*/
2503
2504 /*------------------------------------------------------------------*/
2505 /* */
2506 /* Name - insert_before_ins */
2507 /* */
2508 /* Function - Insert an instruction before another. */
2509 /* */
2510 /*------------------------------------------------------------------*/
2511
2512 static void
2513 insert_before_ins (MonoInst *ins, InstList *item, MonoInst* to_insert)
2514 {
2515 MonoInst *prev;
2516 g_assert (item->next);
2517 prev = item->next->data;
2518
2519 while (prev->next != ins)
2520 prev = prev->next;
2521 to_insert->next = ins;
2522 prev->next = to_insert;
2523 /*
2524 * needed otherwise in the next instruction we can add an ins to the
2525 * end and that would get past this instruction.
2526 */
2527 item->data = to_insert;
2528 }
2529
2530 /*========================= End of Function ========================*/
2531
2532 /*------------------------------------------------------------------*/
2533 /* */
2534 /* Name - alloc_int_reg */
2535 /* */
2536 /* Function - Allocate a general register. */
2537 /* */
2538 /*------------------------------------------------------------------*/
2539
2540 static int
2541 alloc_int_reg (MonoCompile *cfg, InstList *curinst, MonoInst *ins, int sym_reg, guint32 allow_mask)
2542 {
2543 int val = cfg->rs->iassign [sym_reg];
2544 DEBUG (g_print ("Allocating a general register for %d (%d) with mask %08x\n",val,sym_reg,allow_mask));
2545 if (val < 0) {
2546 int spill = 0;
2547 if (val < -1) {
2548 /* the register gets spilled after this inst */
2549 spill = -val -1;
2550 }
2551 val = mono_regstate_alloc_int (cfg->rs, allow_mask);
2552 if (val < 0)
2553 val = get_register_spilling (cfg, curinst, ins, allow_mask, sym_reg);
2554 cfg->rs->iassign [sym_reg] = val;
2555 /* add option to store before the instruction for src registers */
2556 if (spill)
2557 create_spilled_store (cfg, spill, val, sym_reg, ins);
2558 }
2559 DEBUG (g_print ("Allocated %d for %d\n",val,sym_reg));
2560 cfg->rs->isymbolic [val] = sym_reg;
2561 return val;
2562 }
2563
2564 /*========================= End of Function ========================*/
2565
2566 /*------------------------------------------------------------------*/
2567 /* */
2568 /* Name - mono_arch_local_regalloc. */
2569 /* */
2570 /* Function - We first scan the list of instructions and we */
2571 /* save the liveness information of each register */
2572 /* (when the register is first used, when its value */
2573 /* is set etc.). We also reverse the list of instr- */
2574 /* uctions (in the InstList list) because assigning */
2575 /* registers backwards allows for more tricks to be */
2576 /* used. */
2577 /* */
2578 /*------------------------------------------------------------------*/
2579
2580 void
2581 mono_arch_local_regalloc (MonoCompile *cfg, MonoBasicBlock *bb)
2582 {
2583 MonoInst *ins;
2584 MonoRegState *rs = cfg->rs;
2585 int i, val;
2586 RegTrack *reginfo, *reginfof;
2587 RegTrack *reginfo1, *reginfo2, *reginfod;
2588 InstList *tmp, *reversed = NULL;
2589 const char *spec;
2590 guint32 src1_mask, src2_mask, dest_mask;
2591 guint32 cur_iregs, cur_fregs;
2592
2593 if (!bb->code)
2594 return;
2595 rs->next_vireg = bb->max_ireg;
2596 rs->next_vfreg = bb->max_freg;
2597 mono_regstate_assign (rs);
2598 reginfo = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vireg);
2599 reginfof = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vfreg);
2600 rs->ifree_mask = S390_CALLER_REGS;
2601 rs->ffree_mask = S390_CALLER_FREGS;
2602
2603 ins = bb->code;
2604 i = 1;
2605 DEBUG (g_print ("LOCAL regalloc: basic block: %d\n", bb->block_num));
2606 /* forward pass on the instructions to collect register liveness info */
2607 while (ins) {
2608 spec = ins_spec [ins->opcode];
2609 DEBUG (print_ins (i, ins));
2610 if (spec [MONO_INST_CLOB] == 'c') {
2611 MonoCallInst * call = (MonoCallInst*)ins;
2612 int j;
2613 }
2614 if (spec [MONO_INST_SRC1]) {
2615 if (spec [MONO_INST_SRC1] == 'f')
2616 reginfo1 = reginfof;
2617 else
2618 reginfo1 = reginfo;
2619 reginfo1 [ins->sreg1].prev_use = reginfo1 [ins->sreg1].last_use;
2620 reginfo1 [ins->sreg1].last_use = i;
2621 } else {
2622 ins->sreg1 = -1;
2623 }
2624 if (spec [MONO_INST_SRC2]) {
2625 if (spec [MONO_INST_SRC2] == 'f')
2626 reginfo2 = reginfof;
2627 else
2628 reginfo2 = reginfo;
2629 reginfo2 [ins->sreg2].prev_use = reginfo2 [ins->sreg2].last_use;
2630 reginfo2 [ins->sreg2].last_use = i;
2631 } else {
2632 ins->sreg2 = -1;
2633 }
2634 if (spec [MONO_INST_DEST]) {
2635 if (spec [MONO_INST_DEST] == 'f')
2636 reginfod = reginfof;
2637 else
2638 reginfod = reginfo;
2639 if (spec [MONO_INST_DEST] != 'b') /* it's not just a base register */
2640 reginfod [ins->dreg].killed_in = i;
2641 reginfod [ins->dreg].prev_use = reginfod [ins->dreg].last_use;
2642 reginfod [ins->dreg].last_use = i;
2643 if (reginfod [ins->dreg].born_in == 0 || reginfod [ins->dreg].born_in > i)
2644 reginfod [ins->dreg].born_in = i;
2645 if (spec [MONO_INST_DEST] == 'l') {
2646 /* result in eax:edx, the virtual register is allocated sequentially */
2647 reginfod [ins->dreg + 1].prev_use = reginfod [ins->dreg + 1].last_use;
2648 reginfod [ins->dreg + 1].last_use = i;
2649 if (reginfod [ins->dreg + 1].born_in == 0 || reginfod [ins->dreg + 1].born_in > i)
2650 reginfod [ins->dreg + 1].born_in = i;
2651 }
2652 } else {
2653 ins->dreg = -1;
2654 }
2655 reversed = inst_list_prepend (cfg->mempool, reversed, ins);
2656 ++i;
2657 ins = ins->next;
2658 }
2659
2660 cur_iregs = S390_CALLER_REGS;
2661 cur_fregs = S390_CALLER_FREGS;
2662
2663 DEBUG (print_regtrack (reginfo, rs->next_vireg));
2664 DEBUG (print_regtrack (reginfof, rs->next_vfreg));
2665 tmp = reversed;
2666 while (tmp) {
2667 int prev_dreg, prev_sreg1, prev_sreg2;
2668 --i;
2669 ins = tmp->data;
2670 spec = ins_spec [ins->opcode];
2671 DEBUG (g_print ("processing:"));
2672 DEBUG (print_ins (i, ins));
2673 /* make the register available for allocation: FIXME add fp reg */
2674 if (ins->opcode == OP_SETREG || ins->opcode == OP_SETREGIMM) {
2675 cur_iregs |= 1 << ins->dreg;
2676 DEBUG (g_print ("adding %d to cur_iregs\n", ins->dreg));
2677 } else if (ins->opcode == OP_SETFREG) {
2678 cur_fregs |= 1 << ins->dreg;
2679 DEBUG (g_print ("adding %d to cur_fregs\n", ins->dreg));
2680 } else if (spec [MONO_INST_CLOB] == 'c') {
2681 MonoCallInst *cinst = (MonoCallInst*)ins;
2682 DEBUG (g_print ("excluding regs 0x%x from cur_iregs (0x%x)\n",
2683 cinst->used_iregs, cur_iregs));
2684 DEBUG (g_print ("excluding fpregs 0x%x from cur_fregs (0x%x)\n",
2685 cinst->used_fregs, cur_fregs));
2686 cur_iregs &= ~cinst->used_iregs;
2687 cur_fregs &= ~cinst->used_fregs;
2688 DEBUG (g_print ("available cur_iregs: 0x%x\n", cur_iregs));
2689 DEBUG (g_print ("available cur_fregs: 0x%x\n", cur_fregs));
2690 /*------------------------------------------------------------*/
2691 /* registers used by the calling convention are excluded from */
2692 /* allocation: they will be selectively enabled when they are */
2693 /* assigned by the special SETREG opcodes. */
2694 /*------------------------------------------------------------*/
2695 }
2696 dest_mask = src1_mask = src2_mask = cur_iregs;
2697 /*------------------------------------------------------*/
2698 /* update for use with FP regs... */
2699 /*------------------------------------------------------*/
2700 if (spec [MONO_INST_DEST] == 'f') {
2701 dest_mask = cur_fregs;
2702 if (ins->dreg >= MONO_MAX_FREGS) {
2703 val = rs->fassign [ins->dreg];
2704 prev_dreg = ins->dreg;
2705 if (val < 0) {
2706 int spill = 0;
2707 if (val < -1) {
2708 /* the register gets spilled after this inst */
2709 spill = -val -1;
2710 }
2711 val = mono_regstate_alloc_float (rs, dest_mask);
2712 if (val < 0)
2713 val = get_float_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2714 rs->fassign [ins->dreg] = val;
2715 if (spill)
2716 create_spilled_store_float (cfg, spill, val, prev_dreg, ins);
2717 }
2718 DEBUG (g_print ("\tassigned dreg %s to dest R%d\n",
2719 mono_arch_regname (val), ins->dreg));
2720 rs->fsymbolic [val] = prev_dreg;
2721 ins->dreg = val;
2722 if (spec [MONO_INST_CLOB] == 'c' && ins->dreg != s390_f0) {
2723 /* this instruction only outputs to s390_f0, need to copy */
2724 create_copy_ins_float (cfg, ins->dreg, s390_f0, ins);
2725 }
2726 } else {
2727 prev_dreg = -1;
2728 }
2729 if (freg_is_freeable (ins->dreg) && prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i || !(cur_fregs & (1 << ins->dreg)))) {
2730 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2731 mono_regstate_free_float (rs, ins->dreg);
2732 }
2733 } else if (ins->dreg >= MONO_MAX_IREGS) {
2734 val = rs->iassign [ins->dreg];
2735 prev_dreg = ins->dreg;
2736 if (val < 0) {
2737 int spill = 0;
2738 if (val < -1) {
2739 /* the register gets spilled after this inst */
2740 spill = -val -1;
2741 }
2742 val = mono_regstate_alloc_int (rs, dest_mask);
2743 if (val < 0)
2744 val = get_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2745 rs->iassign [ins->dreg] = val;
2746 if (spill)
2747 create_spilled_store (cfg, spill, val, prev_dreg, ins);
2748 }
2749 DEBUG (g_print ("\tassigned dreg %s to dest R%d (prev: R%d)\n",
2750 mono_arch_regname (val), ins->dreg, prev_dreg));
2751 rs->isymbolic [val] = prev_dreg;
2752 ins->dreg = val;
2753 if (spec [MONO_INST_DEST] == 'l') {
2754 int hreg = prev_dreg + 1;
2755 val = rs->iassign [hreg];
2756 if (val < 0) {
2757 int spill = 0;
2758 if (val < -1) {
2759 /* the register gets spilled after this inst */
2760 spill = -val -1;
2761 }
2762 val = mono_regstate_alloc_int (rs, dest_mask);
2763 if (val < 0)
2764 val = get_register_spilling (cfg, tmp, ins, dest_mask, hreg);
2765 rs->iassign [hreg] = val;
2766 if (spill)
2767 create_spilled_store (cfg, spill, val, hreg, ins);
2768 }
2769 DEBUG (g_print ("\tassigned hreg %s to dest R%d\n", mono_arch_regname (val), hreg));
2770 rs->isymbolic [val] = hreg;
2771 /* FIXME:? ins->dreg = val; */
2772 if (ins->dreg == s390_r3) {
2773 if (val != s390_r2)
2774 create_copy_ins (cfg, val, s390_r2, ins);
2775 } else if (ins->dreg == s390_r2) {
2776 if (val == s390_r3) {
2777 /* swap */
2778 create_copy_ins (cfg, s390_r3, s390_r0, ins);
2779 create_copy_ins (cfg, s390_r2, s390_r3, ins);
2780 create_copy_ins (cfg, s390_r0, s390_r2, ins);
2781 } else {
2782 /* two forced copies */
2783 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2784 create_copy_ins (cfg, val, s390_r2, ins);
2785 }
2786 } else {
2787 if (val == s390_r2) {
2788 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2789 } else {
2790 /* two forced copies */
2791 create_copy_ins (cfg, val, s390_r2, ins);
2792 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2793 }
2794 }
2795 if (reg_is_freeable (val) && hreg >= 0 && (reginfo [hreg].born_in >= i && !(cur_iregs & (1 << val)))) {
2796 DEBUG (g_print ("\tfreeable %s (R%d)\n", mono_arch_regname (val), hreg));
2797 mono_regstate_free_int (rs, val);
2798 }
2799 } else if (spec [MONO_INST_DEST] == 'a' && ins->dreg != s390_r2 && spec [MONO_INST_CLOB] != 'd') {
2800 /* this instruction only outputs to s390_r2, need to copy */
2801 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2802 }
2803 } else {
2804 prev_dreg = -1;
2805 }
2806 if (spec [MONO_INST_DEST] == 'f' &&
2807 freg_is_freeable (ins->dreg) &&
2808 prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i)) {
2809 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2810 mono_regstate_free_float (rs, ins->dreg);
2811 } else if (spec [MONO_INST_DEST] != 'f' &&
2812 reg_is_freeable (ins->dreg) &&
2813 prev_dreg >= 0 && (reginfo [prev_dreg].born_in >= i)) {
2814 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2815 mono_regstate_free_int (rs, ins->dreg);
2816 }
2817 if (spec [MONO_INST_SRC1] == 'f') {
2818 src1_mask = cur_fregs;
2819 if (ins->sreg1 >= MONO_MAX_FREGS) {
2820 val = rs->fassign [ins->sreg1];
2821 prev_sreg1 = ins->sreg1;
2822 if (val < 0) {
2823 int spill = 0;
2824 if (val < -1) {
2825 /* the register gets spilled after this inst */
2826 spill = -val -1;
2827 }
2828 //g_assert (val == -1); /* source cannot be spilled */
2829 val = mono_regstate_alloc_float (rs, src1_mask);
2830 if (val < 0)
2831 val = get_float_register_spilling (cfg, tmp, ins, src1_mask, ins->sreg1);
2832 rs->fassign [ins->sreg1] = val;
2833 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n", mono_arch_regname (val), ins->sreg1));
2834 if (spill) {
2835 MonoInst *store = create_spilled_store_float (cfg, spill, val, prev_sreg1, NULL);
2836 insert_before_ins (ins, tmp, store);
2837 }
2838 }
2839 rs->fsymbolic [val] = prev_sreg1;
2840 ins->sreg1 = val;
2841 } else {
2842 prev_sreg1 = -1;
2843 }
2844 } else if (ins->sreg1 >= MONO_MAX_IREGS) {
2845 val = rs->iassign [ins->sreg1];
2846 prev_sreg1 = ins->sreg1;
2847 if (val < 0) {
2848 int spill = 0;
2849 if (val < -1) {
2850 /* the register gets spilled after this inst */
2851 spill = -val -1;
2852 }
2853 val = mono_regstate_alloc_int (rs, src1_mask);
2854 if (val < 0)
2855 val = get_register_spilling (cfg, tmp, ins,
2856 src1_mask,
2857 ins->sreg1);
2858 rs->iassign [ins->sreg1] = val;
2859 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n",
2860 mono_arch_regname (val), ins->sreg1));
2861 if (spill) {
2862 MonoInst *store;
2863 store = create_spilled_store (cfg, spill, val,
2864 prev_sreg1, NULL);
2865 insert_before_ins (ins, tmp, store);
2866 }
2867 }
2868 rs->isymbolic [val] = prev_sreg1;
2869 ins->sreg1 = val;
2870 } else {
2871 prev_sreg1 = -1;
2872 }
2873 /*----------------------------------------------*/
2874 /* handle clobbering of sreg1 */
2875 /*----------------------------------------------*/
2876 if ((spec [MONO_INST_CLOB] == '1' ||
2877 spec [MONO_INST_CLOB] == 's') &&
2878 ins->dreg != ins->sreg1) {
2879 MonoInst *copy;
2880 copy = create_copy_ins (cfg, ins->dreg, ins->sreg1, NULL);
2881 DEBUG (g_print ("\tneed to copy sreg1 %s to dreg %s\n",
2882 mono_arch_regname (ins->sreg1),
2883 mono_arch_regname (ins->dreg)));
2884 if (ins->sreg2 == -1 || spec [MONO_INST_CLOB] == 's') {
2885 /* note: the copy is inserted before the current instruction! */
2886 insert_before_ins (ins, tmp, copy);
2887 /* we set sreg1 to dest as well */
2888 prev_sreg1 = ins->sreg1 = ins->dreg;
2889 } else {
2890 /* inserted after the operation */
2891 copy->next = ins->next;
2892 ins->next = copy;
2893 }
2894 }
2895
2896 if (spec [MONO_INST_SRC2] == 'f') {
2897 src2_mask = cur_fregs;
2898 if (ins->sreg2 >= MONO_MAX_FREGS) {
2899 val = rs->fassign [ins->sreg2];
2900 prev_sreg2 = ins->sreg2;
2901 if (val < 0) {
2902 int spill = 0;
2903 if (val < -1) {
2904 /* the register gets spilled after this inst */
2905 spill = -val -1;
2906 }
2907 val = mono_regstate_alloc_float (rs, src2_mask);
2908 if (val < 0)
2909 val = get_float_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2910 rs->fassign [ins->sreg2] = val;
2911 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2912 if (spill)
2913 create_spilled_store_float (cfg, spill, val, prev_sreg2, ins);
2914 }
2915 rs->fsymbolic [val] = prev_sreg2;
2916 ins->sreg2 = val;
2917 } else {
2918 prev_sreg2 = -1;
2919 }
2920 } else if (ins->sreg2 >= MONO_MAX_IREGS) {
2921 val = rs->iassign [ins->sreg2];
2922 prev_sreg2 = ins->sreg2;
2923 if (val < 0) {
2924 int spill = 0;
2925 if (val < -1) {
2926 /* the register gets spilled after this inst */
2927 spill = -val -1;
2928 }
2929 val = mono_regstate_alloc_int (rs, src2_mask);
2930 if (val < 0)
2931 val = get_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2932 rs->iassign [ins->sreg2] = val;
2933 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2934 if (spill)
2935 create_spilled_store (cfg, spill, val, prev_sreg2, ins);
2936 }
2937 rs->isymbolic [val] = prev_sreg2;
2938 ins->sreg2 = val;
2939 } else {
2940 prev_sreg2 = -1;
2941 }
2942
2943 if (spec [MONO_INST_CLOB] == 'c') {
2944 int j, s;
2945 guint32 clob_mask = S390_CALLER_REGS;
2946 for (j = 0; j < MONO_MAX_IREGS; ++j) {
2947 s = 1 << j;
2948 if ((clob_mask & s) && !(rs->ifree_mask & s) && j != ins->sreg1) {
2949 //g_warning ("register %s busy at call site\n", mono_arch_regname (j));
2950 }
2951 }
2952 }
2953 /*if (reg_is_freeable (ins->sreg1) && prev_sreg1 >= 0 && reginfo [prev_sreg1].born_in >= i) {
2954 DEBUG (g_print ("freeable %s\n", mono_arch_regname (ins->sreg1)));
2955 mono_regstate_free_int (rs, ins->sreg1);
2956 }
2957 if (reg_is_freeable (ins->sreg2) && prev_sreg2 >= 0 && reginfo [prev_sreg2].born_in >= i) {
2958 DEBUG (g_print ("freeable %s\n", mono_arch_regname (ins->sreg2)));
2959 mono_regstate_free_int (rs, ins->sreg2);
2960 }*/
2961
2962 //DEBUG (print_ins (i, ins));
2963 tmp = tmp->next;
2964 }
2965 }
2966
2967 /*========================= End of Function ========================*/
2968
2969 /*------------------------------------------------------------------*/
2970 /* */
2971 /* Name - emit_float_to_int */
2972 /* */
2973 /* Function - Create instructions which will convert a floating */
2974 /* point value to integer. */
2975 /* */
2976 /*------------------------------------------------------------------*/
2977
2978 static guchar*
2979 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2980 {
2981 /* sreg is a float, dreg is an integer reg. */
2982 if (is_signed) {
2983 s390_cfdbr (code, dreg, 5, sreg);
2984 switch (size) {
2985 case 1:
2986 s390_lhi (code, s390_r0, 0);
2987 s390_lhi (code, s390_r13, 0xff);
2988 s390_ltr (code, dreg, dreg);
2989 s390_jnl (code, 4);
2990 s390_lhi (code, s390_r0, 0x80);
2991 s390_nr (code, dreg, s390_r13);
2992 s390_or (code, dreg, s390_r0);
2993 break;
2994 }
2995 } else {
2996 s390_basr (code, s390_r13, 0);
2997 s390_j (code, 10);
2998 s390_double (code, 0x41e0000000000000);
2999 s390_double (code, 0x41f0000000000000);
3000 s390_ldr (code, s390_f15, sreg);
3001 s390_cdb (code, s390_f15, 0, s390_r13, 0);
3002 s390_jl (code, 10);
3003 s390_sdb (code, s390_f15, 0, s390_r13, 8);
3004 s390_cfdbr (code, dreg, 7, s390_f15);
3005 s390_j (code, 4);
3006 s390_cfdbr (code, dreg, 5, sreg);
3007 switch (size) {
3008 case 1:
3009 s390_lhi (code, s390_r0, 0xff);
3010 s390_nr (code, dreg, s390_r0);
3011 break;
3012 case 2:
3013 s390_lhi (code, s390_r0, -1);
3014 s390_srl (code, s390_r0, 0, 16);
3015 s390_nr (code, dreg, s390_r0);
3016 break;
3017 }
3018 }
3019 return code;
3020 }
3021
3022 /*========================= End of Function ========================*/
3023
3024 /*------------------------------------------------------------------*/
3025 /* */
3026 /* Name - mono_emit_stack_alloc */
3027 /* */
3028 /* Function - */
3029 /* */
3030 /*------------------------------------------------------------------*/
3031
3032 static unsigned char*
3033 mono_emit_stack_alloc (guchar *code, MonoInst* tree)
3034 {
3035 return code;
3036 }
3037
3038 /*========================= End of Function ========================*/
3039
3040 /*------------------------------------------------------------------*/
3041 /* */
3042 /* Name - mono_arch_output_basic_block */
3043 /* */
3044 /* Function - Perform the "real" work of emitting instructions */
3045 /* that will do the work of in the basic block. */
3046 /* */
3047 /*------------------------------------------------------------------*/
3048
3049 void
3050 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
3051 {
3052 MonoInst *ins;
3053 MonoCallInst *call;
3054 guint offset;
3055 guint8 *code = cfg->native_code + cfg->code_len;
3056 MonoInst *last_ins = NULL;
3057 guint last_offset = 0;
3058 int max_len, cpos;
3059 guint8 cond;
3060
3061 if (cfg->opt & MONO_OPT_PEEPHOLE)
3062 peephole_pass (cfg, bb);
3063
3064 /* we don't align basic blocks of loops on s390 */
3065
3066 if (cfg->verbose_level > 2)
3067 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
3068
3069 cpos = bb->max_offset;
3070
3071 if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
3072 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
3073 //g_assert (!mono_compile_aot);
3074 //cpos += 6;
3075 //if (bb->cil_code)
3076 // cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
3077 /* this is not thread save, but good enough */
3078 /* fixme: howto handle overflows? */
3079 //x86_inc_mem (code, &cov->data [bb->dfn].count);
3080 }
3081
3082 ins = bb->code;
3083 while (ins) {
3084 offset = code - cfg->native_code;
3085
3086 max_len = ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
3087
3088 if (offset > (cfg->code_size - max_len - 16)) {
3089 cfg->code_size *= 2;
3090 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
3091 code = cfg->native_code + offset;
3092 }
3093
3094 switch (ins->opcode) {
3095 case OP_STOREI1_MEMBASE_IMM: {
3096 s390_lhi (code, s390_r14, ins->inst_imm);
3097 if (s390_is_uimm12(ins->inst_offset))
3098 s390_stc (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
3099 else {
3100 s390_basr (code, s390_r13, 0);
3101 s390_j (code, 4);
3102 s390_word (code, ins->inst_offset);
3103 s390_l (code, s390_r13, 0, s390_r13, 4);
3104 s390_stc (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
3105 }
3106 }
3107 break;
3108 case OP_STOREI2_MEMBASE_IMM: {
3109 s390_lhi (code, s390_r14, ins->inst_imm);
3110 if (s390_is_uimm12(ins->inst_offset)) {
3111 s390_sth (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
3112 } else {
3113 s390_basr (code, s390_r14, 0);
3114 s390_j (code, 4);
3115 s390_word (code, ins->inst_offset);
3116 s390_l (code, s390_r13, 0, s390_r13, 4);
3117 s390_sth (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
3118 }
3119 }
3120 break;
3121 case OP_STORE_MEMBASE_IMM:
3122 case OP_STOREI4_MEMBASE_IMM: {
3123 if (s390_is_imm16(ins->inst_imm)) {
3124 s390_lhi (code, s390_r14, ins->inst_imm);
3125 } else {
3126 s390_basr (code, s390_r13, 0);
3127 s390_j (code, 4);
3128 s390_word (code, ins->inst_imm);
3129 s390_l (code, s390_r14, 0, s390_r13, 4);
3130 }
3131 if (s390_is_uimm12(ins->inst_offset)) {
3132 s390_st (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
3133 } else {
3134 s390_basr (code, s390_r13, 0);
3135 s390_j (code, 4);
3136 s390_word (code, ins->inst_offset);
3137 s390_l (code, s390_r13, 0, s390_r13, 4);
3138 s390_st (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
3139 }
3140 }
3141 break;
3142 case OP_STOREI1_MEMBASE_REG: {
3143 if (s390_is_uimm12(ins->inst_offset)) {
3144 s390_stc (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3145 } else {
3146 s390_basr (code, s390_r13, 0);
3147 s390_j (code, 4);
3148 s390_word (code, ins->inst_offset);
3149 s390_l (code, s390_r13, 0, s390_r13, 4);
3150 s390_stc (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3151 }
3152 }
3153 break;
3154 case OP_STOREI2_MEMBASE_REG: {
3155 if (s390_is_uimm12(ins->inst_offset)) {
3156 s390_sth (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3157 } else {
3158 s390_basr (code, s390_r13, 0);
3159 s390_j (code, 4);
3160 s390_word (code, ins->inst_offset);
3161 s390_l (code, s390_r13, 0, s390_r13, 4);
3162 s390_sth (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3163 }
3164 }
3165 break;
3166 case OP_STORE_MEMBASE_REG:
3167 case OP_STOREI4_MEMBASE_REG: {
3168 if (s390_is_uimm12(ins->inst_offset)) {
3169 s390_st (code, ins->sreg1, 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_st (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3176 }
3177 }
3178 break;
3179 case CEE_LDIND_I:
3180 case CEE_LDIND_I4:
3181 case CEE_LDIND_U4: {
3182 s390_basr (code, s390_r13, 0);
3183 s390_j (code, 4);
3184 s390_word (code, ins->inst_p0);
3185 s390_l (code, s390_r13, 0, s390_r13, 4);
3186 s390_l (code, ins->dreg, 0, s390_r13, 0);
3187 }
3188 break;
3189 case OP_LOADU4_MEM:
3190 g_assert_not_reached ();
3191 break;
3192 case OP_LOAD_MEMBASE:
3193 case OP_LOADI4_MEMBASE:
3194 case OP_LOADU4_MEMBASE: {
3195 if (s390_is_uimm12(ins->inst_offset))
3196 s390_l (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3197 else {
3198 if (s390_is_imm16(ins->inst_offset)) {
3199 s390_lhi (code, s390_r13, ins->inst_offset);
3200 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3201 } else {
3202 s390_basr (code, s390_r13, 0);
3203 s390_j (code, 4);
3204 s390_word (code, ins->inst_offset);
3205 s390_l (code, s390_r13, 0, s390_r13, 4);
3206 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3207 }
3208 }
3209 }
3210 break;
3211 case OP_LOADU1_MEMBASE: {
3212 s390_lhi (code, s390_r0, 0);
3213 if (s390_is_uimm12(ins->inst_offset))
3214 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3215 else {
3216 s390_basr (code, s390_r13, 0);
3217 s390_j (code, 4);
3218 s390_word (code, ins->inst_offset);
3219 s390_l (code, s390_r13, 0, s390_r13, 4);
3220 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3221 }
3222 s390_lr (code, ins->dreg, s390_r0);
3223 }
3224 break;
3225 case OP_LOADI1_MEMBASE: {
3226 s390_lhi (code, s390_r0, 0);
3227 if (s390_is_uimm12(ins->inst_offset))
3228 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3229 else {
3230 s390_basr (code, s390_r13, 0);
3231 s390_j (code, 4);
3232 s390_word (code, ins->inst_offset);
3233 s390_l (code, s390_r13, 0, s390_r13, 4);
3234 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3235 }
3236 s390_lhi (code, s390_r13, 0x80);
3237 s390_nr (code, s390_r13, s390_r0);
3238 s390_jz (code, 5);
3239 s390_lhi (code, s390_r13, 0xff00);
3240 s390_or (code, s390_r0, s390_r13);
3241 s390_lr (code, ins->dreg, s390_r0);
3242 }
3243 break;
3244 case OP_LOADU2_MEMBASE: {
3245 s390_lhi (code, s390_r0, 0);
3246 if (s390_is_uimm12(ins->inst_offset))
3247 s390_icm (code, s390_r0, 3, ins->inst_basereg, ins->inst_offset);
3248 else {
3249 s390_basr (code, s390_r13, 0);
3250 s390_j (code, 4);
3251 s390_word (code, ins->inst_offset);
3252 s390_l (code, s390_r13, 0, s390_r13, 4);
3253 s390_ar (code, s390_r13, ins->inst_basereg);
3254 s390_icm (code, s390_r0, 3, s390_r13, 0);
3255 }
3256 s390_lr (code, ins->dreg, s390_r0);
3257 }
3258 break;
3259 case OP_LOADI2_MEMBASE: {
3260 s390_lhi (code, s390_r0, 0);
3261 if (s390_is_uimm12(ins->inst_offset))
3262 s390_lh (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3263 else {
3264 s390_basr (code, s390_r13, 0);
3265 s390_j (code, 4);
3266 s390_word (code, ins->inst_offset);
3267 s390_l (code, s390_r13, 0, s390_r13, 4);
3268 s390_lh (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3269 }
3270 s390_lr (code, ins->dreg, s390_r0);
3271 }
3272 break;
3273 case CEE_CONV_I1: {
3274 s390_lhi (code, s390_r0, 0x80);
3275 if (ins->dreg != ins->sreg1) {
3276 s390_lr (code, ins->dreg, ins->sreg1);
3277 }
3278 s390_nr (code, s390_r0, ins->sreg1);
3279 s390_jz (code, 7);
3280 s390_lhi (code, s390_r13, -1);
3281 s390_sll (code, s390_r13, 0, 8);
3282 s390_or (code, ins->dreg, s390_r13);
3283 }
3284 break;
3285 case CEE_CONV_I2: {
3286 s390_lhi (code, s390_r0, 0x80);
3287 s390_sll (code, s390_r0, 0, 8);
3288 if (ins->dreg != ins->sreg1) {
3289 s390_lr (code, ins->dreg, ins->sreg1);
3290 }
3291 s390_nr (code, s390_r0, ins->sreg1);
3292 s390_jz (code, 7);
3293 s390_lhi (code, s390_r13, -1);
3294 s390_sll (code, s390_r13, 0, 16);
3295 s390_or (code, ins->dreg, s390_r13);
3296 }
3297 break;
3298 case CEE_CONV_U1: {
3299 s390_lhi (code, s390_r0, 0xff);
3300 if (ins->dreg != ins->sreg1) {
3301 s390_lr (code, ins->dreg, ins->sreg1);
3302 }
3303 s390_nr (code, ins->dreg, s390_r0);
3304 }
3305 break;
3306 case CEE_CONV_U2: {
3307 s390_lhi (code, s390_r0, -1);
3308 s390_sll (code, s390_r0, 0, 16);
3309 s390_srl (code, s390_r0, 0, 16);
3310 if (ins->dreg != ins->sreg1) {
3311 s390_lr (code, ins->dreg, ins->sreg1);
3312 }
3313 s390_nr (code, ins->dreg, s390_r0);
3314 }
3315 break;
3316 case OP_COMPARE: {
3317 if ((ins->next) &&
3318 ((ins->next->opcode >= CEE_BNE_UN) &&
3319 (ins->next->opcode <= CEE_BLT_UN)) ||
3320 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3321 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3322 ((ins->next->opcode == OP_CLT_UN) ||
3323 (ins->next->opcode == OP_CGT_UN)))
3324 s390_clr (code, ins->sreg1, ins->sreg2);
3325 else
3326 s390_cr (code, ins->sreg1, ins->sreg2);
3327 }
3328 break;
3329 case OP_COMPARE_IMM: {
3330 if (s390_is_imm16 (ins->inst_imm)) {
3331 s390_lhi (code, s390_r0, ins->inst_imm);
3332 if ((ins->next) &&
3333 ((ins->next->opcode >= CEE_BNE_UN) &&
3334 (ins->next->opcode <= CEE_BLT_UN)) ||
3335 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3336 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3337 ((ins->next->opcode == OP_CLT_UN) ||
3338 (ins->next->opcode == OP_CGT_UN)))
3339 s390_clr (code, ins->sreg1, s390_r0);
3340 else
3341 s390_cr (code, ins->sreg1, s390_r0);
3342 }
3343 else {
3344 s390_basr (code, s390_r13, 0);
3345 s390_j (code, 4);
3346 s390_word (code, ins->inst_imm);
3347 if ((ins->next) &&
3348 ((ins->next->opcode >= CEE_BNE_UN) &&
3349 (ins->next->opcode <= CEE_BLT_UN)) ||
3350 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3351 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3352 ((ins->next->opcode == OP_CLT_UN) &&
3353 (ins->next->opcode == OP_CGT_UN)))
3354 s390_cl (code, ins->sreg1, 0, s390_r13, 4);
3355 else
3356 s390_c (code, ins->sreg1, 0, s390_r13, 4);
3357 }
3358 }
3359 break;
3360 case OP_X86_TEST_NULL: {
3361 s390_ltr (code, ins->sreg1, ins->sreg1);
3362 }
3363 break;
3364 case CEE_BREAK: {
3365 s390_break (code);
3366 }
3367 break;
3368 case OP_ADDCC: {
3369 if (ins->dreg != ins->sreg1) {
3370 s390_lr (code, ins->dreg, ins->sreg1);
3371 }
3372 s390_alr (code, ins->dreg, ins->sreg2);
3373 }
3374 break;
3375 case CEE_ADD: {
3376 if (ins->dreg != ins->sreg1) {
3377 s390_lr (code, ins->dreg, ins->sreg1);
3378 }
3379 s390_ar (code, ins->dreg, ins->sreg2);
3380 }
3381 break;
3382 case OP_ADC: {
3383 if (ins->dreg != ins->sreg1) {
3384 s390_lr (code, ins->dreg, ins->sreg1);
3385 }
3386 s390_alcr (code, ins->dreg, ins->sreg2);
3387 }
3388 break;
3389 case OP_ADD_IMM: {
3390 if ((ins->next) &&
3391 (ins->next->opcode == OP_ADC_IMM)) {
3392 s390_basr (code, s390_r13, 0);
3393 s390_j (code, 4);
3394 s390_word (code, ins->inst_imm);
3395 if (ins->dreg != ins->sreg1) {
3396 s390_lr (code, ins->dreg, ins->sreg1);
3397 }
3398 s390_al (code, ins->dreg, 0, s390_r13, 4);
3399 } else {
3400 if (s390_is_imm16 (ins->inst_imm)) {
3401 if (ins->dreg != ins->sreg1) {
3402 s390_lr (code, ins->dreg, ins->sreg1);
3403 }
3404 s390_ahi (code, ins->dreg, ins->inst_imm);
3405 } else {
3406 s390_basr (code, s390_r13, 0);
3407 s390_j (code, 4);
3408 s390_word (code, ins->inst_imm);
3409 if (ins->dreg != ins->sreg1) {
3410 s390_lr (code, ins->dreg, ins->sreg1);
3411 }
3412 s390_a (code, ins->dreg, 0, s390_r13, 4);
3413 }
3414 }
3415 }
3416 break;
3417 case OP_ADC_IMM: {
3418 if (s390_is_imm16 (ins->inst_imm)) {
3419 if (ins->dreg != ins->sreg1) {
3420 s390_lr (code, ins->dreg, ins->sreg1);
3421 }
3422 s390_lhi (code, s390_r0, ins->inst_imm);
3423 s390_alcr (code, ins->dreg, s390_r0);
3424 } else {
3425 s390_basr (code, s390_r13, 0);
3426 s390_j (code, 4);
3427 s390_word (code, ins->inst_imm);
3428 s390_l (code, s390_r13, 0, s390_r13, 4);
3429 s390_alcr (code, ins->dreg, s390_r13);
3430 }
3431 }
3432 break;
3433 case CEE_ADD_OVF: {
3434 if (ins->dreg != ins->sreg1) {
3435 s390_lr (code, ins->dreg, ins->sreg1);
3436 }
3437 s390_ar (code, ins->dreg, ins->sreg2);
3438 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3439 }
3440 break;
3441 case CEE_ADD_OVF_UN: {
3442 if (ins->dreg != ins->sreg1) {
3443 s390_lr (code, ins->dreg, ins->sreg1);
3444 }
3445 s390_alr (code, ins->dreg, ins->sreg2);
3446 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3447 }
3448 break;
3449 case OP_ADD_OVF_CARRY: {
3450 if (ins->dreg != ins->sreg1) {
3451 s390_lr (code, ins->dreg, ins->sreg1);
3452 }
3453 s390_lhi (code, s390_r0, 0);
3454 s390_lr (code, s390_r1, s390_r0);
3455 s390_alcr (code, s390_r0, s390_r1);
3456 s390_ar (code, ins->dreg, ins->sreg2);
3457 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3458 s390_ar (code, ins->dreg, s390_r0);
3459 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3460 }
3461 break;
3462 case OP_ADD_OVF_UN_CARRY: {
3463 if (ins->dreg != ins->sreg1) {
3464 s390_lr (code, ins->dreg, ins->sreg1);
3465 }
3466 s390_alcr (code, ins->dreg, ins->sreg2);
3467 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3468 }
3469 break;
3470 case OP_SUBCC: {
3471 if (ins->dreg != ins->sreg1) {
3472 s390_lr (code, ins->dreg, ins->sreg1);
3473 }
3474 s390_slr (code, ins->dreg, ins->sreg2);
3475 }
3476 break;
3477 case CEE_SUB: {
3478 if (ins->dreg != ins->sreg1) {
3479 s390_lr (code, ins->dreg, ins->sreg1);
3480 }
3481 s390_sr (code, ins->dreg, ins->sreg2);
3482 }
3483 break;
3484 case OP_SBB: {
3485 if (ins->dreg != ins->sreg1) {
3486 s390_lr (code, ins->dreg, ins->sreg1);
3487 }
3488 s390_slbr (code, ins->dreg, ins->sreg2);
3489 }
3490 break;
3491 case OP_SUB_IMM: {
3492 if (s390_is_imm16 (-ins->inst_imm)) {
3493 if (ins->dreg != ins->sreg1) {
3494 s390_lr (code, ins->dreg, ins->sreg1);
3495 }
3496 s390_ahi (code, ins->dreg, -ins->inst_imm);
3497 } else {
3498 s390_basr (code, s390_r13, 0);
3499 s390_j (code, 4);
3500 s390_word (code, ins->inst_imm);
3501 if (ins->dreg != ins->sreg1) {
3502 s390_lr (code, ins->dreg, ins->sreg1);
3503 }
3504 s390_s (code, ins->dreg, 0, s390_r13, 4);
3505 }
3506 }
3507 break;
3508 case OP_SBB_IMM: {
3509 s390_basr (code, s390_r13, 0);
3510 s390_j (code, 4);
3511 s390_word (code, ins->inst_imm);
3512 s390_sl (code, ins->dreg, 0, s390_r13, 4);
3513 }
3514 break;
3515 case CEE_SUB_OVF: {
3516 if (ins->dreg != ins->sreg1) {
3517 s390_lr (code, ins->dreg, ins->sreg1);
3518 }
3519 s390_sr (code, ins->dreg, ins->sreg2);
3520 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3521 }
3522 break;
3523 case CEE_SUB_OVF_UN: {
3524 if (ins->dreg != ins->sreg1) {
3525 s390_lr (code, ins->dreg, ins->sreg1);
3526 }
3527 s390_slr (code, ins->dreg, ins->sreg2);
3528 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3529 }
3530 break;
3531 case OP_SUB_OVF_CARRY: {
3532 if (ins->dreg != ins->sreg1) {
3533 s390_lr (code, ins->dreg, ins->sreg1);
3534 }
3535 s390_lhi (code, s390_r0, 0);
3536 s390_lr (code, s390_r1, s390_r0);
3537 s390_slbr (code, s390_r0, s390_r1);
3538 s390_sr (code, ins->dreg, ins->sreg2);
3539 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3540 s390_ar (code, ins->dreg, s390_r0);
3541 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3542 }
3543 break;
3544 case OP_SUB_OVF_UN_CARRY: {
3545 if (ins->dreg != ins->sreg1) {
3546 s390_lr (code, ins->dreg, ins->sreg1);
3547 }
3548 s390_slbr (code, ins->dreg, ins->sreg2);
3549 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3550 }
3551 break;
3552 case CEE_AND: {
3553 if (ins->sreg1 == ins->dreg) {
3554 s390_nr (code, ins->dreg, ins->sreg2);
3555 }
3556 else {
3557 if (ins->sreg2 == ins->dreg) {
3558 s390_nr (code, ins->dreg, ins->sreg1);
3559 }
3560 else {
3561 s390_lr (code, ins->dreg, ins->sreg1);
3562 s390_nr (code, ins->dreg, ins->sreg2);
3563 }
3564 }
3565 }
3566 break;
3567 case OP_AND_IMM: {
3568 if (s390_is_imm16 (ins->inst_imm)) {
3569 s390_lhi (code, s390_r0, ins->inst_imm);
3570 if (ins->dreg != ins->sreg1) {
3571 s390_lr (code, ins->dreg, ins->sreg1);
3572 }
3573 s390_nr (code, ins->dreg, s390_r0);
3574 } else {
3575 s390_basr (code, s390_r13, 0);
3576 s390_j (code, 4);
3577 s390_word (code, ins->inst_imm);
3578 if (ins->dreg != ins->sreg1) {
3579 s390_lr (code, ins->dreg, ins->sreg1);
3580 }
3581 s390_n (code, ins->dreg, 0, s390_r13, 4);
3582 }
3583 }
3584 break;
3585 case CEE_DIV: {
3586 s390_lr (code, s390_r0, ins->sreg1);
3587 s390_srda (code, s390_r0, 0, 32);
3588 s390_dr (code, s390_r0, ins->sreg2);
3589 s390_lr (code, ins->dreg, s390_r1);
3590 }
3591 break;
3592 case CEE_DIV_UN: {
3593 s390_lr (code, s390_r0, ins->sreg1);
3594 s390_srdl (code, s390_r0, 0, 32);
3595 s390_dlr (code, s390_r0, ins->sreg2);
3596 s390_lr (code, ins->dreg, s390_r1);
3597 }
3598 break;
3599 case OP_DIV_IMM: {
3600 if (s390_is_imm16 (ins->inst_imm)) {
3601 s390_lhi (code, s390_r13, ins->inst_imm);
3602 s390_lr (code, s390_r0, ins->sreg1);
3603 } else {
3604 s390_basr (code, s390_r13, 0);
3605 s390_j (code, 4);
3606 s390_word (code, ins->inst_imm);
3607 s390_lr (code, s390_r0, ins->sreg1);
3608 s390_l (code, s390_r13, 0, s390_r13, 4);
3609 }
3610 s390_srda (code, s390_r0, 0, 32);
3611 s390_dr (code, s390_r0, ins->sreg2);
3612 s390_lr (code, ins->dreg, s390_r1);
3613 }
3614 break;
3615 case CEE_REM: {
3616 s390_lr (code, s390_r0, ins->sreg1);
3617 s390_srda (code, s390_r0, 0, 32);
3618 s390_dr (code, s390_r0, ins->sreg2);
3619 s390_lr (code, ins->dreg, s390_r0);
3620 break;
3621 case CEE_REM_UN:
3622 s390_lr (code, s390_r0, ins->sreg1);
3623 s390_srdl (code, s390_r0, 0, 32);
3624 s390_dlr (code, s390_r0, ins->sreg2);
3625 s390_lr (code, ins->dreg, s390_r0);
3626 }
3627 break;
3628 case OP_REM_IMM: {
3629 if (s390_is_imm16 (ins->inst_imm)) {
3630 s390_lhi (code, s390_r13, ins->inst_imm);
3631 s390_lr (code, s390_r0, ins->sreg1);
3632 } else {
3633 s390_basr (code, s390_r13, 0);
3634 s390_j (code, 4);
3635 s390_word (code, ins->inst_imm);
3636 s390_lr (code, s390_r0, ins->sreg1);
3637 s390_l (code, s390_r13, 0, s390_r13, 4);
3638 }
3639 s390_srda (code, s390_r0, 0, 32);
3640 s390_dr (code, s390_r0, ins->sreg2);
3641 s390_lr (code, ins->dreg, s390_r0);
3642 }
3643 break;
3644 case CEE_OR: {
3645 if (ins->sreg1 == ins->dreg) {
3646 s390_or (code, ins->dreg, ins->sreg2);
3647 }
3648 else {
3649 if (ins->sreg2 == ins->dreg) {
3650 s390_or (code, ins->dreg, ins->sreg1);
3651 }
3652 else {
3653 s390_lr (code, ins->dreg, ins->sreg1);
3654 s390_or (code, ins->dreg, ins->sreg2);
3655 }
3656 }
3657 }
3658 break;
3659 case OP_OR_IMM: {
3660 if (s390_is_imm16 (ins->inst_imm)) {
3661 s390_lhi (code, s390_r0, ins->inst_imm);
3662 if (ins->dreg != ins->sreg1) {
3663 s390_lr (code, ins->dreg, ins->sreg1);
3664 }
3665 s390_or (code, ins->dreg, s390_r0);
3666 } else {
3667 s390_bras (code, s390_r13, 4);
3668 s390_word (code, ins->inst_imm);
3669 if (ins->dreg != ins->sreg1) {
3670 s390_lr (code, ins->dreg, ins->sreg1);
3671 }
3672 s390_o (code, ins->dreg, 0, s390_r13, 0);
3673 }
3674 }
3675 break;
3676 case CEE_XOR: {
3677 if (ins->sreg1 == ins->dreg) {
3678 s390_xr (code, ins->dreg, ins->sreg2);
3679 }
3680 else {
3681 if (ins->sreg2 == ins->dreg) {
3682 s390_xr (code, ins->dreg, ins->sreg1);
3683 }
3684 else {
3685 s390_lr (code, ins->dreg, ins->sreg1);
3686 s390_xr (code, ins->dreg, ins->sreg2);
3687 }
3688 }
3689 }
3690 break;
3691 case OP_XOR_IMM: {
3692 if (s390_is_imm16 (ins->inst_imm)) {
3693 s390_lhi (code, s390_r0, ins->inst_imm);
3694 if (ins->dreg != ins->sreg1) {
3695 s390_lr (code, ins->dreg, ins->sreg1);
3696 }
3697 s390_xr (code, ins->dreg, s390_r0);
3698 } else {
3699 s390_basr (code, s390_r13, 0);
3700 s390_j (code, 4);
3701 s390_word (code, ins->inst_imm);
3702 if (ins->dreg != ins->sreg1) {
3703 s390_lr (code, ins->dreg, ins->sreg1);
3704 }
3705 s390_x (code, ins->dreg, 0, s390_r13, 4);
3706 }
3707 }
3708 break;
3709 case CEE_SHL: {
3710 if (ins->sreg1 != ins->dreg) {
3711 s390_lr (code, ins->dreg, ins->sreg1);
3712 }
3713 s390_sll (code, ins->dreg, ins->sreg2, 0);
3714 }
3715 break;
3716 case OP_SHL_IMM: {
3717 if (ins->sreg1 != ins->dreg) {
3718 s390_lr (code, ins->dreg, ins->sreg1);
3719 }
3720 s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3721 }
3722 break;
3723 case CEE_SHR: {
3724 if (ins->sreg1 != ins->dreg) {
3725 s390_lr (code, ins->dreg, ins->sreg1);
3726 }
3727 s390_sra (code, ins->dreg, ins->sreg2, 0);
3728 }
3729 break;
3730 case OP_SHR_IMM: {
3731 if (ins->sreg1 != ins->dreg) {
3732 s390_lr (code, ins->dreg, ins->sreg1);
3733 }
3734 s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3735 }
3736 break;
3737 case OP_SHR_UN_IMM: {
3738 if (ins->sreg1 != ins->dreg) {
3739 s390_lr (code, ins->dreg, ins->sreg1);
3740 }
3741 s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3742 }
3743 break;
3744 case CEE_SHR_UN: {
3745 if (ins->sreg1 != ins->dreg) {
3746 s390_lr (code, ins->dreg, ins->sreg1);
3747 }
3748 s390_srl (code, ins->dreg, ins->sreg2, 0);
3749 }
3750 break;
3751 case CEE_NOT: {
3752 if (ins->sreg1 != ins->dreg) {
3753 s390_lr (code, ins->dreg, ins->sreg1);
3754 }
3755 s390_lhi (code, s390_r0, -1);
3756 s390_xr (code, ins->dreg, s390_r0);
3757 }
3758 break;
3759 case CEE_NEG: {
3760 s390_lcr (code, ins->dreg, ins->sreg1);
3761 }
3762 break;
3763 case CEE_MUL: {
3764 if (ins->sreg1 == ins->dreg) {
3765 s390_msr (code, ins->dreg, ins->sreg2);
3766 }
3767 else {
3768 if (ins->sreg2 == ins->dreg) {
3769 s390_msr (code, ins->dreg, ins->sreg1);
3770 }
3771 else {
3772 s390_lr (code, ins->dreg, ins->sreg1);
3773 s390_msr (code, ins->dreg, ins->sreg2);
3774 }
3775 }
3776 }
3777 break;
3778 case OP_MUL_IMM: {
3779 if (s390_is_imm16 (ins->inst_imm)) {
3780 s390_lhi (code, s390_r13, ins->inst_imm);
3781 } else {
3782 s390_basr (code, s390_r13, 0);
3783 s390_j (code, 4);
3784 s390_word (code, ins->inst_imm);
3785 if (ins->dreg != ins->sreg1) {
3786 s390_lr (code, ins->dreg, ins->sreg1);
3787 }
3788 s390_l (code, s390_r13, 0, s390_r13, 4);
3789 }
3790 s390_msr (code, ins->dreg, s390_r13);
3791 }
3792 break;
3793 case CEE_MUL_OVF: {
3794 short int *o[2];
3795 s390_ltr (code, s390_r1, ins->sreg1);
3796 s390_jz (code, 0); CODEPTR(code, o[0]);
3797 s390_ltr (code, s390_r0, ins->sreg2);
3798 s390_jnz (code, 6);
3799 s390_lhi (code, s390_r1, 0);
3800 s390_j (code, 0); CODEPTR(code, o[1]);
3801 s390_xr (code, s390_r0, s390_r1);
3802 s390_msr (code, s390_r1, ins->sreg2);
3803 s390_xr (code, s390_r0, s390_r1);
3804 s390_srl (code, s390_r0, 0, 31);
3805 s390_ltr (code, s390_r0, s390_r0);
3806 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3807 PTRSLOT (code, o[0]);
3808 PTRSLOT (code, o[1]);
3809 s390_lr (code, ins->dreg, s390_r1);
3810 }
3811 break;
3812 case CEE_MUL_OVF_UN: {
3813 s390_lhi (code, s390_r0, 0);
3814 s390_lr (code, s390_r1, ins->sreg1);
3815 s390_mlr (code, s390_r0, ins->sreg2);
3816 s390_ltr (code, s390_r0, s390_r0);
3817 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3818 s390_lr (code, ins->dreg, s390_r1);
3819 }
3820 break;
3821 case OP_LMUL: {
3822 s390_l (code, s390_r0, 0, ins->sreg1, 4);
3823 s390_lr (code, s390_r14, s390_r0);
3824 s390_srda (code, s390_r0, 0, 32);
3825 s390_m (code, s390_r0, 0, ins->sreg2, 4);
3826 s390_srl (code, s390_r14, 0, 31);
3827 s390_a (code, s390_r14, 0, ins->sreg1, 0);
3828 s390_l (code, s390_r13, 0, ins->sreg2, 0);
3829 s390_srl (code, s390_r13, 0, 31);
3830 s390_ms (code, s390_r13, 0, ins->sreg1, 4);
3831 s390_ar (code, s390_r14, s390_r13);
3832 s390_st (code, s390_r14, 0, ins->dreg, 0);
3833 s390_st (code, s390_r1, 0, ins->dreg, 4);
3834 }
3835 break;
3836 case OP_ICONST:
3837 case OP_SETREGIMM: {
3838 if (s390_is_imm16(ins->inst_c0)) {
3839 s390_lhi (code, ins->dreg, ins->inst_c0);
3840 } else {
3841 s390_basr (code, s390_r13, 0);
3842 s390_j (code, 4);
3843 s390_word (code, ins->inst_c0);
3844 s390_l (code, ins->dreg, 0, s390_r13, 4);
3845 }
3846 }
3847 break;
3848 case OP_AOTCONST: {
3849 s390_basr (code, s390_r13, 0);
3850 s390_j (code, 4);
3851 mono_add_patch_info (cfg, code - cfg->native_code,
3852 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3853 s390_word (code, 0);
3854 s390_l (code,ins->dreg, 0, s390_r13, 4);
3855 }
3856 break;
3857 case CEE_CONV_I4:
3858 case CEE_CONV_U4:
3859 case OP_MOVE:
3860 case OP_SETREG: {
3861 if (ins->dreg != ins->sreg1) {
3862 s390_lr (code, ins->dreg, ins->sreg1);
3863 }
3864 }
3865 break;
3866 case OP_SETLRET: {
3867 int saved = ins->sreg1;
3868 if (ins->sreg1 == s390_r2) {
3869 s390_lr (code, s390_r0, ins->sreg1);
3870 saved = s390_r0;
3871 }
3872 if (ins->sreg2 != s390_r2)
3873 s390_lr (code, s390_r2, ins->sreg2);
3874 if (saved != s390_r3)
3875 s390_lr (code, s390_r3, saved);
3876 break;
3877 }
3878 case OP_SETFREG:
3879 case OP_FMOVE: {
3880 if (ins->dreg != ins->sreg1) {
3881 s390_ldr (code, ins->dreg, ins->sreg1);
3882 }
3883 }
3884 break;
3885 case OP_S390_SETF4RET: {
3886 s390_ledbr (code, ins->dreg, ins->sreg1);
3887 }
3888 break;
3889 case OP_FCONV_TO_R4: {
3890 if ((ins->next) &&
3891 (ins->next->opcode != OP_STORER4_MEMBASE_REG))
3892 s390_ledbr (code, ins->dreg, ins->sreg1);
3893 }
3894 break;
3895 case CEE_JMP: {
3896 if (cfg->method->save_lmf)
3897 code = restoreLMF(cfg, code);
3898
3899 code = backUpStackPtr(cfg, code);
3900 s390_l (code, s390_r14, 0, STK_BASE, S390_RET_ADDR_OFFSET);
3901 mono_add_patch_info (cfg, code - cfg->native_code,
3902 MONO_PATCH_INFO_METHOD_JUMP,
3903 ins->inst_p0);
3904 s390_jcl (code, S390_CC_UN, 0);
3905 }
3906 break;
3907 case OP_CHECK_THIS: {
3908 /* ensure ins->sreg1 is not NULL */
3909 s390_icm (code, s390_r0, 15, ins->sreg1, 0);
3910 }
3911 break;
3912 case OP_FCALL: {
3913 call = (MonoCallInst*)ins;
3914 if (ins->flags & MONO_INST_HAS_METHOD)
3915 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD,
3916 call->method);
3917 else
3918 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS,
3919 call->fptr);
3920 s390_brasl (code, s390_r14, 0);
3921 if (call->signature->ret->type == MONO_TYPE_R4)
3922 s390_ldebr (code, s390_f0, s390_f0);
3923 }
3924 break;
3925 case OP_LCALL:
3926 case OP_VCALL:
3927 case OP_VOIDCALL:
3928 case CEE_CALL: {
3929 call = (MonoCallInst*)ins;
3930 if (ins->flags & MONO_INST_HAS_METHOD)
3931 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD, call->method);
3932 else
3933 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS, call->fptr);
3934 s390_brasl (code, s390_r14, 0);
3935 }
3936 break;
3937 case OP_FCALL_REG: {
3938 call = (MonoCallInst*)ins;
3939 s390_lr (code, s390_r1, ins->sreg1);
3940 s390_basr (code, s390_r14, s390_r1);
3941 if (call->signature->ret->type == MONO_TYPE_R4)
3942 s390_ldebr (code, s390_f0, s390_f0);
3943 }
3944 break;
3945 case OP_LCALL_REG:
3946 case OP_VCALL_REG:
3947 case OP_VOIDCALL_REG:
3948 case OP_CALL_REG: {
3949 s390_lr (code, s390_r1, ins->sreg1);
3950 s390_basr (code, s390_r14, s390_r1);
3951 }
3952 break;
3953 case OP_FCALL_MEMBASE: {
3954 call = (MonoCallInst*)ins;
3955 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3956 s390_basr (code, s390_r14, s390_r1);
3957 if (call->signature->ret->type == MONO_TYPE_R4)
3958 s390_ldebr (code, s390_f0, s390_f0);
3959 }
3960 break;
3961 case OP_LCALL_MEMBASE:
3962 case OP_VCALL_MEMBASE:
3963 case OP_VOIDCALL_MEMBASE:
3964 case OP_CALL_MEMBASE: {
3965 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3966 s390_basr (code, s390_r14, s390_r1);
3967 }
3968 break;
3969 case OP_OUTARG:
3970 g_assert_not_reached ();
3971 break;
3972 case OP_LOCALLOC: {
3973 int alloca_skip = S390_MINIMAL_STACK_SIZE + cfg->param_area +
3974 S390_STACK_ALIGNMENT - 1;
3975 int area_offset = S390_ALIGN(alloca_skip, S390_STACK_ALIGNMENT);
3976 s390_lr (code, s390_r1, ins->sreg1);
3977 s390_ahi (code, s390_r1, 14);
3978 s390_srl (code, s390_r1, 0, 3);
3979 s390_sll (code, s390_r1, 0, 3);
3980 s390_l (code, s390_r13, 0, STK_BASE, 0);
3981 s390_lcr (code, s390_r1, s390_r1);
3982 s390_la (code, STK_BASE, STK_BASE, s390_r1, 0);
3983 s390_st (code, s390_r13, 0, STK_BASE, 0);
3984 s390_la (code, ins->dreg, 0, STK_BASE, area_offset);
3985 s390_srl (code, ins->dreg, 0, 3);
3986 s390_sll (code, ins->dreg, 0, 3);
3987 }
3988 break;
3989 case CEE_RET: {
3990 s390_br (code, s390_r14);
3991 }
3992 break;
3993 case CEE_THROW: {
3994 s390_lr (code, s390_r2, ins->sreg1);
3995 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3996 (gpointer)"mono_arch_throw_exception");
3997 s390_brasl (code, s390_r14, 0);
3998 }
3999 break;
4000 case OP_START_HANDLER: {
4001 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4002 s390_st (code, s390_r14, 0,
4003 ins->inst_left->inst_basereg,
4004 ins->inst_left->inst_offset);
4005 } else {
4006 s390_basr (code, s390_r13, 0);
4007 s390_j (code, 4);
4008 s390_word (code, ins->inst_left->inst_offset);
4009 s390_l (code, s390_r13, 0, s390_r13, 4);
4010 s390_st (code, s390_r14, s390_r13,
4011 ins->inst_left->inst_basereg, 0);
4012 }
4013 }
4014 break;
4015 case OP_ENDFILTER: {
4016 if (ins->sreg1 != s390_r2)
4017 s390_lr (code, s390_r2, ins->sreg1);
4018 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4019 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg,
4020 ins->inst_left->inst_offset);
4021 } else {
4022 s390_basr (code, s390_r13, 0);
4023 s390_j (code, 4);
4024 s390_word (code, ins->inst_left->inst_offset);
4025 s390_l (code, s390_r13, 0, s390_r13, 4);
4026 s390_l (code, s390_r14, s390_r13,
4027 ins->inst_left->inst_basereg, 0);
4028 }
4029 // s390_l (code, STK_BASE, 0, STK_BASE, 0);
4030 // s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4031 s390_br (code, s390_r14);
4032 }
4033 break;
4034 case CEE_ENDFINALLY: {
4035 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4036 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg,
4037 ins->inst_left->inst_offset);
4038 } else {
4039 s390_basr (code, s390_r13, 0);
4040 s390_j (code, 4);
4041 s390_word (code, ins->inst_left->inst_offset);
4042 s390_l (code, s390_r13, 0, s390_r13, 4);
4043 s390_l (code, s390_r14, s390_r13,
4044 ins->inst_left->inst_basereg, 0);
4045 }
4046 // s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg, ins->inst_left->inst_offset);
4047 s390_br (code, s390_r14);
4048 }
4049 break;
4050 case OP_CALL_HANDLER: {
4051 mono_add_patch_info (cfg, code-cfg->native_code,
4052 MONO_PATCH_INFO_BB, ins->inst_target_bb);
4053 s390_brasl (code, s390_r14, 0);
4054 }
4055 break;
4056 case OP_LABEL: {
4057 ins->inst_c0 = code - cfg->native_code;
4058 }
4059 break;
4060 case CEE_BR:
4061 EMIT_UNCOND_BRANCH(ins);
4062 break;
4063 case OP_BR_REG: {
4064 s390_br (code, ins->sreg1);
4065 }
4066 break;
4067 case OP_CEQ: {
4068 s390_lhi (code, ins->dreg, 1);
4069 s390_jz (code, 4);
4070 s390_lhi (code, ins->dreg, 0);
4071 }
4072 break;
4073 case OP_CLT: {
4074 s390_lhi (code, ins->dreg, 1);
4075 s390_jl (code, 4);
4076 s390_lhi (code, ins->dreg, 0);
4077 }
4078 break;
4079 case OP_CLT_UN: {
4080 s390_lhi (code, ins->dreg, 1);
4081 s390_jlo (code, 4);
4082 s390_lhi (code, ins->dreg, 0);
4083 }
4084 break;
4085 case OP_CGT: {
4086 s390_lhi (code, ins->dreg, 1);
4087 s390_jh (code, 4);
4088 s390_lhi (code, ins->dreg, 0);
4089 }
4090 break;
4091 case OP_CGT_UN: {
4092 s390_lhi (code, ins->dreg, 1);
4093 s390_jho (code, 4);
4094 s390_lhi (code, ins->dreg, 0);
4095 }
4096 break;
4097 case OP_COND_EXC_EQ:
4098 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
4099 break;
4100 case OP_COND_EXC_NE_UN:
4101 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
4102 break;
4103 case OP_COND_EXC_LT:
4104 case OP_COND_EXC_LT_UN:
4105 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
4106 break;
4107 case OP_COND_EXC_GT:
4108 case OP_COND_EXC_GT_UN:
4109 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
4110 break;
4111 case OP_COND_EXC_GE:
4112 case OP_COND_EXC_GE_UN:
4113 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
4114 break;
4115 case OP_COND_EXC_LE:
4116 case OP_COND_EXC_LE_UN:
4117 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
4118 break;
4119 case OP_COND_EXC_OV:
4120 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
4121 break;
4122 case OP_COND_EXC_NO:
4123 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
4124 break;
4125 case OP_COND_EXC_C:
4126 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
4127 break;
4128 case OP_COND_EXC_NC:
4129 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
4130 break;
4131 case CEE_BEQ:
4132 EMIT_COND_BRANCH (ins, S390_CC_EQ);
4133 break;
4134 case CEE_BNE_UN:
4135 EMIT_COND_BRANCH (ins, S390_CC_NE);
4136 break;
4137 case CEE_BLT:
4138 case CEE_BLT_UN:
4139 EMIT_COND_BRANCH (ins, S390_CC_LT);
4140 break;
4141 case CEE_BGT:
4142 case CEE_BGT_UN:
4143 EMIT_COND_BRANCH (ins, S390_CC_GT);
4144 break;
4145 case CEE_BGE:
4146 case CEE_BGE_UN:
4147 EMIT_COND_BRANCH (ins, S390_CC_GE);
4148 break;
4149 case CEE_BLE:
4150 case CEE_BLE_UN:
4151 EMIT_COND_BRANCH (ins, S390_CC_LE);
4152 break;
4153
4154 /* floating point opcodes */
4155 case OP_R8CONST: {
4156 if (*((float *) ins->inst_p0) == 0) {
4157 s390_lzdr (code, ins->dreg);
4158 } else {
4159 s390_basr (code, s390_r13, 0);
4160 s390_j (code, 4);
4161 s390_word (code, ins->inst_p0);
4162 s390_l (code, s390_r13, 0, s390_r13, 4);
4163 s390_ld (code, ins->dreg, 0, s390_r13, 0);
4164 }
4165 }
4166 break;
4167 case OP_R4CONST: {
4168 if (*((float *) ins->inst_p0) == 0) {
4169 s390_lzdr (code, ins->dreg);
4170 } else {
4171 s390_basr (code, s390_r13, 0);
4172 s390_j (code, 4);
4173 s390_word (code, ins->inst_p0);
4174 s390_l (code, s390_r13, 0, s390_r13, 4);
4175 s390_ldeb (code, ins->dreg, 0, s390_r13, 0);
4176 // s390_ldebr(code, ins->dreg, ins->dreg);
4177 }
4178 }
4179 break;
4180 case OP_STORER8_MEMBASE_REG: {
4181 if (s390_is_uimm12(ins->inst_offset)) {
4182 s390_std (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
4183 } else {
4184 s390_basr (code, s390_r13, 0);
4185 s390_j (code, 4);
4186 s390_word (code, ins->inst_offset);
4187 s390_l (code, s390_r13, 0, s390_r13, 4);
4188 s390_std (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
4189 }
4190 }
4191 break;
4192 case OP_LOADR8_MEMBASE: {
4193 if (s390_is_uimm12(ins->inst_offset)) {
4194 s390_ld (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
4195 } else {
4196 s390_basr (code, s390_r13, 0);
4197 s390_j (code, 4);
4198 s390_word (code, ins->inst_offset);
4199 s390_l (code, s390_r13, 0, s390_r13, 4);
4200 s390_ld (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
4201 }
4202 }
4203 break;
4204 case OP_STORER4_MEMBASE_REG: {
4205 if (s390_is_uimm12(ins->inst_offset)) {
4206 s390_ledbr(code, s390_f15, ins->sreg1);
4207 s390_ste (code, s390_f15, 0, ins->inst_destbasereg, ins->inst_offset);
4208 } else {
4209 s390_basr (code, s390_r13, 0);
4210 s390_j (code, 4);
4211 s390_word (code, ins->inst_offset);
4212 s390_l (code, s390_r13, 0, s390_r13, 4);
4213 s390_ledbr(code, s390_f15, ins->sreg1);
4214 s390_ste (code, s390_f15, s390_r13, ins->inst_destbasereg, 0);
4215 }
4216 }
4217 break;
4218 case OP_LOADR4_MEMBASE: {
4219 if (s390_is_uimm12(ins->inst_offset)) {
4220 s390_ldeb (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
4221 } else {
4222 s390_basr (code, s390_r13, 0);
4223 s390_j (code, 4);
4224 s390_word (code, ins->inst_offset);
4225 s390_l (code, s390_r13, 0, s390_r13, 4);
4226 s390_ldeb (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
4227 }
4228 // s390_ldebr (code, ins->dreg, ins->dreg);
4229 }
4230 break;
4231 case CEE_CONV_R_UN: {
4232 s390_cdfbr (code, ins->dreg, ins->sreg1);
4233 s390_ltr (code, ins->sreg1, ins->sreg1);
4234 s390_jnl (code, 12);
4235 s390_basr (code, s390_r13, 0);
4236 s390_j (code, 6);
4237 s390_word (code, 0x41f00000);
4238 s390_word (code, 0);
4239 s390_adb (code, ins->dreg, 0, s390_r13, 4);
4240 }
4241 break;
4242 case CEE_CONV_R4: {
4243 s390_cdfbr (code, ins->dreg, ins->sreg1);
4244 }
4245 break;
4246 case CEE_CONV_R8: {
4247 s390_cdfbr (code, ins->dreg, ins->sreg1);
4248 }
4249 break;
4250 case OP_FCONV_TO_I1:
4251 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
4252 break;
4253 case OP_FCONV_TO_U1:
4254 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
4255 break;
4256 case OP_FCONV_TO_I2:
4257 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
4258 break;
4259 case OP_FCONV_TO_U2:
4260 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
4261 break;
4262 case OP_FCONV_TO_I4:
4263 case OP_FCONV_TO_I:
4264 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
4265 break;
4266 case OP_FCONV_TO_U4:
4267 case OP_FCONV_TO_U:
4268 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
4269 break;
4270 case OP_FCONV_TO_I8:
4271 case OP_FCONV_TO_U8:
4272 g_assert_not_reached ();
4273 /* Implemented as helper calls */
4274 break;
4275 case OP_LCONV_TO_R_UN:
4276 g_assert_not_reached ();
4277 /* Implemented as helper calls */
4278 break;
4279 case OP_LCONV_TO_OVF_I: {
4280 /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
4281 short int *o[5];
4282 s390_ltr (code, ins->sreg2, ins->sreg2);
4283 s390_jnl (code, 0); CODEPTR(code, o[0]);
4284 s390_ltr (code, ins->sreg1, ins->sreg1);
4285 s390_jnl (code, 0); CODEPTR(code, o[1]);
4286 s390_lhi (code, s390_r13, -1);
4287 s390_cr (code, ins->sreg1, s390_r13);
4288 s390_jnz (code, 0); CODEPTR(code, o[2]);
4289 if (ins->dreg != ins->sreg2)
4290 s390_lr (code, ins->dreg, ins->sreg2);
4291 s390_j (code, 0); CODEPTR(code, o[3]);
4292 PTRSLOT(code, o[0]);
4293 s390_jz (code, 0); CODEPTR(code, o[4]);
4294 PTRSLOT(code, o[1]);
4295 PTRSLOT(code, o[2]);
4296 mono_add_patch_info (cfg, code - cfg->native_code,
4297 MONO_PATCH_INFO_EXC, "OverflowException");
4298 s390_brasl (code, s390_r14, 0);
4299 PTRSLOT(code, o[3]);
4300 PTRSLOT(code, o[4]);
4301 }
4302 break;
4303 case OP_SQRT: {
4304 s390_sqdbr (code, ins->dreg, ins->sreg1);
4305 }
4306 break;
4307 case OP_FADD: {
4308 if (ins->dreg == ins->sreg1)
4309 s390_adbr (code, ins->dreg, ins->sreg2);
4310 else {
4311 if (ins->dreg == ins->sreg2)
4312 s390_adbr (code, ins->dreg, ins->sreg1);
4313 else {
4314 s390_ldr (code, ins->dreg, ins->sreg1);
4315 s390_adbr (code, ins->dreg, ins->sreg2);
4316 }
4317 }
4318 }
4319 break;
4320 case OP_FSUB: {
4321 if (ins->dreg == ins->sreg1)
4322 s390_sdbr (code, ins->dreg, ins->sreg2);
4323 else {
4324 s390_ldr (code, ins->dreg, ins->sreg1);
4325 s390_sdbr (code, ins->dreg, ins->sreg2);
4326 }
4327 }
4328 break;
4329 case OP_FMUL: {
4330 if (ins->dreg == ins->sreg1)
4331 s390_mdbr (code, ins->dreg, ins->sreg2);
4332 else {
4333 if (ins->dreg == ins->sreg2)
4334 s390_mdbr (code, ins->dreg, ins->sreg1);
4335 else {
4336 s390_ldr (code, ins->dreg, ins->sreg1);
4337 s390_mdbr (code, ins->dreg, ins->sreg2);
4338 }
4339 }
4340 }
4341 break;
4342 case OP_FDIV: {
4343 if (ins->dreg == ins->sreg1)
4344 s390_ddbr (code, ins->dreg, ins->sreg2);
4345 else {
4346 s390_ldr (code, ins->dreg, ins->sreg1);
4347 s390_ddbr (code, ins->dreg, ins->sreg2);
4348 }
4349 }
4350 break;
4351 case OP_FNEG: {
4352 s390_lcdbr (code, ins->dreg, ins->sreg1);
4353 }
4354 break;
4355 case OP_FREM: {
4356 if (ins->dreg != ins->sreg1) {
4357 s390_ldr (code, ins->dreg, ins->sreg1);
4358 }
4359 s390_didbr (code, ins->dreg, ins->sreg2, 5, s390_f15);
4360 }
4361 break;
4362 case OP_FCOMPARE: {
4363 s390_cdbr (code, ins->sreg1, ins->sreg2);
4364 }
4365 break;
4366 case OP_FCEQ: {
4367 s390_cdbr (code, ins->sreg1, ins->sreg2);
4368 s390_lhi (code, ins->dreg, 1);
4369 s390_je (code, 4);
4370 s390_lhi (code, ins->dreg, 0);
4371 }
4372 break;
4373 case OP_FCLT: {
4374 s390_cdbr (code, ins->sreg1, ins->sreg2);
4375 s390_lhi (code, ins->dreg, 1);
4376 s390_jl (code, 4);
4377 s390_lhi (code, ins->dreg, 0);
4378 }
4379 break;
4380 case OP_FCLT_UN: {
4381 s390_cdbr (code, ins->sreg1, ins->sreg2);
4382 s390_lhi (code, ins->dreg, 1);
4383 s390_jlo (code, 4);
4384 s390_lhi (code, ins->dreg, 0);
4385 }
4386 break;
4387 case OP_FCGT: {
4388 s390_cdbr (code, ins->sreg1, ins->sreg2);
4389 s390_lhi (code, ins->dreg, 1);
4390 s390_jh (code, 4);
4391 s390_lhi (code, ins->dreg, 0);
4392 }
4393 break;
4394 case OP_FCGT_UN: {
4395 s390_cdbr (code, ins->sreg1, ins->sreg2);
4396 s390_lhi (code, ins->dreg, 1);
4397 s390_jho (code, 4);
4398 s390_lhi (code, ins->dreg, 0);
4399 }
4400 break;
4401 case OP_FBEQ:
4402 EMIT_COND_BRANCH (ins, S390_CC_EQ|S390_CC_OV);
4403 break;
4404 case OP_FBNE_UN:
4405 EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
4406 break;
4407 case OP_FBLT:
4408 EMIT_COND_BRANCH (ins, S390_CC_LT);
4409 break;
4410 case OP_FBLT_UN:
4411 EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
4412 break;
4413 case OP_FBGT:
4414 EMIT_COND_BRANCH (ins, S390_CC_GT);
4415 break;
4416 case OP_FBGT_UN:
4417 EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
4418 break;
4419 case OP_FBGE:
4420 EMIT_COND_BRANCH (ins, S390_CC_GE);
4421 break;
4422 case OP_FBGE_UN:
4423 EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
4424 break;
4425 case OP_FBLE:
4426 EMIT_COND_BRANCH (ins, S390_CC_LE);
4427 break;
4428 case OP_FBLE_UN:
4429 EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
4430 break;
4431 case CEE_CKFINITE: {
4432 short *o;
4433 s390_lhi (code, s390_r13, 0x7f);
4434 s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
4435 s390_jz (code, 0); CODEPTR(code, o);
4436 mono_add_patch_info (cfg, code - cfg->native_code,
4437 MONO_PATCH_INFO_EXC, "ArithmeticException");
4438 s390_brasl (code, s390_r14,0);
4439 PTRSLOT(code, o);
4440 }
4441 break;
4442 case OP_S390_MOVE: {
4443 if (ins->unused > 0) {
4444 if (ins->unused <= 256) {
4445 s390_mvc (code, ins->unused, ins->dreg,
4446 ins->inst_offset, ins->sreg1, ins->inst_imm);
4447 } else {
4448 s390_lr (code, s390_r0, ins->dreg);
4449 if (s390_is_imm16 (ins->inst_offset)) {
4450 s390_ahi (code, s390_r0, ins->inst_offset);
4451 } else {
4452 s390_basr (code, s390_r13, 0);
4453 s390_j (code, 4);
4454 s390_word (code, ins->inst_offset);
4455 s390_a (code, s390_r0, 0, s390_r13, 4);
4456 }
4457 s390_lr (code, s390_r1, ins->sreg2);
4458 if (s390_is_imm16 (ins->inst_imm)) {
4459 s390_ahi (code, s390_r1, ins->inst_imm);
4460 } else {
4461 s390_basr (code, s390_r13, 0);
4462 s390_j (code, 4);
4463 s390_word (code, ins->inst_imm);
4464 s390_a (code, s390_r1, 0, s390_r13, 4);
4465 }
4466 s390_lr (code, s390_r12, ins->sreg1);
4467 s390_lr (code, s390_r13, s390_r1);
4468 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
4469 s390_jo (code, -2);
4470 }
4471 }
4472 }
4473 break;
4474 default:
4475 g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
4476 g_assert_not_reached ();
4477 }
4478
4479 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
4480 g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %d)",
4481 mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
4482 g_assert_not_reached ();
4483 }
4484
4485 cpos += max_len;
4486
4487 last_ins = ins;
4488 last_offset = offset;
4489
4490 ins = ins->next;
4491 }
4492
4493 cfg->code_len = code - cfg->native_code;
4494 }
4495
4496 /*========================= End of Function ========================*/
4497
4498 /*------------------------------------------------------------------*/
4499 /* */
4500 /* Name - mono_arch_register_lowlevel_calls */
4501 /* */
4502 /* Function - Register routines to help with --trace operation. */
4503 /* */
4504 /*------------------------------------------------------------------*/
4505
4506 void
4507 mono_arch_register_lowlevel_calls (void)
4508 {
4509 mono_register_jit_icall (enter_method, "mono_enter_method", NULL, TRUE);
4510 mono_register_jit_icall (leave_method, "mono_leave_method", NULL, TRUE);
4511 }
4512
4513 /*========================= End of Function ========================*/
4514
4515 /*------------------------------------------------------------------*/
4516 /* */
4517 /* Name - mono_arch_patch_code */
4518 /* */
4519 /* Function - Process the patch data created during the */
4520 /* instruction build process. This resolves jumps, */
4521 /* calls, variables etc. */
4522 /* */
4523 /*------------------------------------------------------------------*/
4524
4525 void
4526 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain, guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4527 {
4528 MonoJumpInfo *patch_info;
4529
4530 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4531 unsigned char *ip = patch_info->ip.i + code;
4532 gint32 target = 0;
4533
4534 switch (patch_info->type) {
4535 case MONO_PATCH_INFO_BB:
4536 target = S390_RELATIVE((patch_info->data.bb->native_offset+code),
4537 ip);
4538 ip += 2; /* Skip over op-code */
4539 break;
4540 case MONO_PATCH_INFO_ABS:
4541 target = S390_RELATIVE(patch_info->data.target, ip);
4542 ip += 2; /* Skip over op-code */
4543 break;
4544 case MONO_PATCH_INFO_LABEL:
4545 target = S390_RELATIVE((patch_info->data.inst->inst_c0+code),ip);
4546 ip += 2; /* Skip over op-code */
4547 break;
4548 case MONO_PATCH_INFO_IP:
4549 target = ip;
4550 continue;
4551 case MONO_PATCH_INFO_METHOD_REL:
4552 g_assert_not_reached ();
4553 *((gpointer *)(ip)) = code + patch_info->data.offset;
4554 continue;
4555 case MONO_PATCH_INFO_INTERNAL_METHOD: {
4556 MonoJitICallInfo *mi = mono_find_jit_icall_by_name (patch_info->data.name);
4557 if (!mi) {
4558 g_warning ("unknown MONO_PATCH_INFO_INTERNAL_METHOD %s", patch_info->data.name);
4559 g_assert_not_reached ();
4560 }
4561 target = S390_RELATIVE(mono_icall_get_wrapper (mi), ip);
4562 ip += 2; /* Skip over op-code */
4563 break;
4564 }
4565 case MONO_PATCH_INFO_METHOD_JUMP: {
4566 GSList *list;
4567
4568 /*------------------------------------------------------*/
4569 /* get the trampoline to the method from the domain */
4570 /*------------------------------------------------------*/
4571 target = mono_create_jump_trampoline (domain,
4572 patch_info->data.method,
4573 TRUE);
4574 target = S390_RELATIVE(target, ip);
4575 if (!domain->jump_target_hash)
4576 domain->jump_target_hash = g_hash_table_new (NULL, NULL);
4577 list = g_hash_table_lookup (domain->jump_target_hash,
4578 patch_info->data.method);
4579 list = g_slist_prepend (list, ip);
4580 g_hash_table_insert (domain->jump_target_hash,
4581 patch_info->data.method, list);
4582 ip +=2;
4583 break;
4584 }
4585 case MONO_PATCH_INFO_METHOD:
4586 if (patch_info->data.method == method) {
4587 target = S390_RELATIVE(code, ip);
4588 } else {
4589 /* get the trampoline to the method from the domain */
4590 target = S390_RELATIVE(mono_arch_create_jit_trampoline (patch_info->data.method), ip);
4591 target = mono_arch_create_jit_trampoline(patch_info->data.method);
4592 target = S390_RELATIVE(target, ip);
4593 }
4594 ip += 2; /* Skip over op-code */
4595 break;
4596 case MONO_PATCH_INFO_SWITCH: {
4597 gpointer *table = (gpointer *)patch_info->data.target;
4598 int i;
4599 /*------------------------------------------------------*/
4600 /* ip is pointing at the basr r13,0/j +4 instruction */
4601 /* the vtable value follows this (i.e. ip+6) */
4602 /*------------------------------------------------------*/
4603 *((gconstpointer *)(ip+6)) = table;
4604
4605 for (i = 0; i < patch_info->table_size; i++) {
4606 table [i] = (int)patch_info->data.table [i] + code;
4607 }
4608 continue;
4609 }
4610 case MONO_PATCH_INFO_METHODCONST:
4611 case MONO_PATCH_INFO_CLASS:
4612 case MONO_PATCH_INFO_IMAGE:
4613 case MONO_PATCH_INFO_FIELD:
4614 target = S390_RELATIVE(patch_info->data.target, ip);
4615 continue;
4616 case MONO_PATCH_INFO_R4:
4617 case MONO_PATCH_INFO_R8:
4618 g_assert_not_reached ();
4619 *((gconstpointer *)(ip + 2)) = patch_info->data.target;
4620 continue;
4621 case MONO_PATCH_INFO_IID:
4622 mono_class_init (patch_info->data.klass);
4623 target = S390_RELATIVE(patch_info->data.klass->interface_id, ip);
4624 continue;
4625 case MONO_PATCH_INFO_VTABLE:
4626 target = S390_RELATIVE(mono_class_vtable (domain, patch_info->data.klass),ip);
4627 ip += 2;
4628 continue;
4629 case MONO_PATCH_INFO_CLASS_INIT:
4630 target = S390_RELATIVE(mono_create_class_init_trampoline (mono_class_vtable (domain, patch_info->data.klass)), ip);
4631 ip += 2;
4632 break;
4633 case MONO_PATCH_INFO_SFLDA: {
4634 MonoVTable *vtable = mono_class_vtable (domain, patch_info->data.field->parent);
4635 if (!vtable->initialized && !(vtable->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) && mono_class_needs_cctor_run (vtable->klass, method))
4636 /* Done by the generated code */
4637 ;
4638 else {
4639 if (run_cctors)
4640 mono_runtime_class_init (vtable);
4641 }
4642 target = S390_RELATIVE((char*)vtable->data + patch_info->data.field->offset, ip);
4643 ip += 2;
4644 continue;
4645 }
4646 case MONO_PATCH_INFO_EXC_NAME:
4647 *((gconstpointer *)(ip)) = patch_info->data.name;
4648 continue;
4649 case MONO_PATCH_INFO_LDSTR:
4650 target = mono_ldstr (domain, patch_info->data.token->image,
4651 mono_metadata_token_index (patch_info->data.token->token));
4652 continue;
4653 case MONO_PATCH_INFO_TYPE_FROM_HANDLE: {
4654 gpointer handle;
4655 MonoClass *handle_class;
4656
4657 handle = mono_ldtoken (patch_info->data.token->image,
4658 patch_info->data.token->token,
4659 &handle_class, NULL);
4660 mono_class_init (handle_class);
4661 mono_class_init (mono_class_from_mono_type (handle));
4662
4663 target = handle;
4664 continue;
4665 }
4666 case MONO_PATCH_INFO_LDTOKEN: {
4667 gpointer handle;
4668 MonoClass *handle_class;
4669
4670 handle = mono_ldtoken (patch_info->data.token->image,
4671 patch_info->data.token->token,
4672 &handle_class, NULL);
4673 mono_class_init (handle_class);
4674
4675 target = handle;
4676 continue;
4677 }
4678 case MONO_PATCH_INFO_EXC:
4679 /* everything is dealt with at epilog output time */
4680 continue;
4681 default:
4682 g_assert_not_reached ();
4683 }
4684 s390_patch (ip, target);
4685 }
4686 }
4687
4688 /*========================= End of Function ========================*/
4689
4690 /*------------------------------------------------------------------*/
4691 /* */
4692 /* Name - mono_arch_max_epilog_size */
4693 /* */
4694 /* Function - Determine the maximum size of the epilog code. */
4695 /* */
4696 /*------------------------------------------------------------------*/
4697
4698 int
4699 mono_arch_max_epilog_size (MonoCompile *cfg)
4700 {
4701 int max_epilog_size = 96;
4702 MonoJumpInfo *patch_info;
4703
4704 if (cfg->method->save_lmf)
4705 max_epilog_size += 128;
4706
4707 if (mono_jit_trace_calls != NULL)
4708 max_epilog_size += 128;
4709
4710 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
4711 max_epilog_size += 128;
4712
4713 /* count the number of exception infos */
4714
4715 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4716 if (patch_info->type == MONO_PATCH_INFO_EXC)
4717 max_epilog_size += 26;
4718 }
4719
4720 return max_epilog_size;
4721 }
4722
4723 /*========================= End of Function ========================*/
4724
4725 /*------------------------------------------------------------------*/
4726 /* */
4727 /* Name - mono_arch_emit_prolog */
4728 /* */
4729 /* Function - Create the instruction sequence for a function */
4730 /* prolog. */
4731 /* */
4732 /*------------------------------------------------------------------*/
4733
4734 guint8 *
4735 mono_arch_emit_prolog (MonoCompile *cfg)
4736 {
4737 MonoMethod *method = cfg->method;
4738 MonoBasicBlock *bb;
4739 MonoMethodSignature *sig;
4740 MonoInst *inst;
4741 int alloc_size, pos, max_offset, i, lmfOffset;
4742 guint8 *code;
4743 CallInfo *cinfo;
4744 size_data sz;
4745 int tracing = 0;
4746
4747 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
4748 tracing = 1;
4749
4750 cfg->code_size = 256;
4751 cfg->native_code = code = g_malloc (cfg->code_size);
4752
4753 s390_stm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4754
4755 if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
4756 cfg->used_int_regs |= 1 << 11;
4757 }
4758
4759 alloc_size = cfg->stack_offset;
4760 // if (tracing)
4761 // alloc_size += S390_TRACE_STACK_SIZE;
4762 // pos = 0;
4763 /* reserve room to save return value */
4764 // if (tracing)
4765 // pos += 8;
4766
4767 // alloc_size += pos;
4768
4769 // if (method->save_lmf)
4770 // alloc_size += sizeof(MonoLMF);
4771
4772 // alloc_size = S390_ALIGN(alloc_size, S390_STACK_ALIGNMENT);
4773
4774 cfg->stack_usage = alloc_size;
4775 s390_lr (code, s390_r11, STK_BASE);
4776 if (s390_is_imm16 (-alloc_size)) {
4777 s390_ahi (code, STK_BASE, -alloc_size);
4778 } else {
4779 int stackSize = alloc_size;
4780 while (stackSize > 32767) {
4781 s390_ahi (code, STK_BASE, -32767);
4782 stackSize -= 32767;
4783 }
4784 s390_ahi (code, STK_BASE, -stackSize);
4785 }
4786 s390_st (code, s390_r11, 0, STK_BASE, 0);
4787
4788 // if (cfg->flags & MONO_CFG_HAS_ALLOCA)
4789 if (cfg->frame_reg != STK_BASE)
4790 s390_lr (code, s390_r11, STK_BASE);
4791
4792 /* compute max_offset in order to use short forward jumps
4793 * we always do it on s390 because the immediate displacement
4794 * for jumps is too small
4795 */
4796 max_offset = 0;
4797 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
4798 MonoInst *ins = bb->code;
4799 bb->max_offset = max_offset;
4800
4801 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
4802 max_offset += 6;
4803
4804 while (ins) {
4805 max_offset += ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
4806 ins = ins->next;
4807 }
4808 }
4809
4810 /* load arguments allocated to register from the stack */
4811 sig = method->signature;
4812 pos = 0;
4813
4814 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4815
4816 if (cinfo->struct_ret) {
4817 ArgInfo *ainfo = &cinfo->ret;
4818 inst = cfg->ret;
4819 inst->unused = ainfo->vtsize;
4820 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4821 }
4822
4823 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4824 ArgInfo *ainfo = cinfo->args + i;
4825 inst = cfg->varinfo [pos];
4826
4827 if (inst->opcode == OP_REGVAR) {
4828 if (ainfo->regtype == RegTypeGeneral)
4829 s390_lr (code, inst->dreg, ainfo->reg);
4830 else if (ainfo->regtype == RegTypeFP) {
4831 if (inst->dreg != ainfo->reg) {
4832 if (ainfo->size == 4) {
4833 s390_ledbr (code, inst->dreg, ainfo->reg);
4834 // s390_ler (code, inst->dreg, ainfo->reg);
4835 } else {
4836 s390_ldr (code, inst->dreg, ainfo->reg);
4837 }
4838 }
4839 }
4840 else if (ainfo->regtype == RegTypeBase) {
4841 s390_lr (code, s390_r13, STK_BASE);
4842 s390_ahi (code, s390_r13, alloc_size);
4843 s390_l (code, inst->dreg, 0, s390_r13, ainfo->offset);
4844 } else
4845 g_assert_not_reached ();
4846
4847 if (cfg->verbose_level > 2)
4848 g_print ("Argument %d assigned to register %s\n",
4849 pos, mono_arch_regname (inst->dreg));
4850 } else {
4851 if (ainfo->regtype == RegTypeGeneral) {
4852 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4853 g_assert_not_reached();
4854 switch (ainfo->size) {
4855 case 1:
4856 s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4857 break;
4858 case 2:
4859 s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4860 break;
4861 case 8:
4862 s390_stm (code, ainfo->reg, ainfo->reg + 1,
4863 inst->inst_basereg, inst->inst_offset);
4864 break;
4865 default:
4866 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4867 }
4868 } else if (ainfo->regtype == RegTypeBase) {
4869 } else if (ainfo->regtype == RegTypeFP) {
4870 if (ainfo->size == 8)
4871 s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4872 else if (ainfo->size == 4)
4873 s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4874 else
4875 g_assert_not_reached ();
4876 } else if (ainfo->regtype == RegTypeStructByVal) {
4877 int doffset = inst->inst_offset;
4878 int reg;
4879 if (ainfo->reg != STK_BASE)
4880 reg = ainfo->reg;
4881 else {
4882 reg = s390_r0;
4883 s390_lr (code, s390_r13, STK_BASE);
4884 s390_ahi (code, s390_r13, alloc_size);
4885 }
4886 switch (ainfo->size) {
4887 case 1:
4888 if (ainfo->reg == STK_BASE)
4889 s390_ic (code, reg, 0, s390_r13, ainfo->offset+3);
4890 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
4891 break;
4892 case 2:
4893 if (ainfo->reg == STK_BASE)
4894 s390_lh (code, reg, 0, s390_r13, ainfo->offset+2);
4895 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
4896 break;
4897 case 4:
4898 if (ainfo->reg == STK_BASE)
4899 s390_l (code, reg, 0, s390_r13, ainfo->offset);
4900 s390_st (code, reg, 0, inst->inst_basereg, doffset);
4901 break;
4902 case 8:
4903 if (ainfo->reg == STK_BASE)
4904 s390_lm (code, s390_r0, s390_r1, s390_r13, ainfo->offset);
4905 s390_stm (code, reg, reg+1, inst->inst_basereg, doffset);
4906 break;
4907 }
4908 } else if (ainfo->regtype == RegTypeStructByAddr) {
4909 if (ainfo->reg == STK_BASE) {
4910 s390_lr (code, s390_r13, ainfo->reg);
4911 s390_ahi (code, s390_r13, alloc_size);
4912 s390_l (code, s390_r13, 0, s390_r13,
4913 ainfo->offparm + S390_MINIMAL_STACK_SIZE);
4914 code = emit_memcpy (code, abs(ainfo->vtsize),
4915 inst->inst_basereg,
4916 inst->inst_offset, s390_r13, 0);
4917 } else {
4918 code = emit_memcpy (code, abs(ainfo->vtsize),
4919 inst->inst_basereg,
4920 inst->inst_offset,
4921 ainfo->reg, 0);
4922 }
4923 } else
4924 g_assert_not_reached ();
4925 }
4926 pos++;
4927 }
4928
4929 if (method->save_lmf) {
4930 /*---------------------------------------------------------------*/
4931 /* Preserve the parameter registers while we fix up the lmf */
4932 /*---------------------------------------------------------------*/
4933 s390_lr (code, s390_r7, s390_r2);
4934 s390_lr (code, s390_r8, s390_r3);
4935 s390_lr (code, s390_r9, s390_r4);
4936 s390_lr (code, s390_r10, s390_r5);
4937
4938 mono_add_patch_info (cfg, code - cfg->native_code,
4939 MONO_PATCH_INFO_INTERNAL_METHOD,
4940 (gpointer)"mono_get_lmf_addr");
4941 /*---------------------------------------------------------------*/
4942 /* On return from this call r2 have the address of the &lmf */
4943 /*---------------------------------------------------------------*/
4944 s390_brasl (code, s390_r14, 0);
4945
4946 /*---------------------------------------------------------------*/
4947 /* we build the MonoLMF structure on the stack - see mini-s390.h */
4948 /*---------------------------------------------------------------*/
4949 lmfOffset = alloc_size - sizeof(MonoLMF);
4950
4951 s390_lr (code, s390_r13, cfg->frame_reg);
4952 s390_ahi (code, s390_r13, lmfOffset);
4953
4954 /*---------------------------------------------------------------*/
4955 /* Set lmf.lmf_addr = jit_tls->lmf */
4956 /*---------------------------------------------------------------*/
4957 s390_st (code, s390_r2, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4958
4959 /*---------------------------------------------------------------*/
4960 /* Get current lmf */
4961 /*---------------------------------------------------------------*/
4962 s390_l (code, s390_r0, 0, s390_r2, 0);
4963
4964 /*---------------------------------------------------------------*/
4965 /* Set our lmf as the current lmf */
4966 /*---------------------------------------------------------------*/
4967 s390_st (code, s390_r13, 0, s390_r2, 0);
4968
4969 /*---------------------------------------------------------------*/
4970 /* Have our lmf.previous_lmf point to the last lmf */
4971 /*---------------------------------------------------------------*/
4972 s390_st (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4973
4974 /*---------------------------------------------------------------*/
4975 /* save method info */
4976 /*---------------------------------------------------------------*/
4977 s390_basr (code, s390_r1, 0);
4978 s390_j (code, 4);
4979 s390_word (code, method);
4980 s390_l (code, s390_r1, 0, s390_r1, 4);
4981 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, method));
4982
4983 /*---------------------------------------------------------------*/
4984 /* save the current IP */
4985 /*---------------------------------------------------------------*/
4986 s390_lr (code, s390_r1, cfg->frame_reg);
4987 // s390_ahi (code, s390_r1, alloc_size);
4988 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
4989 s390_l (code, s390_r1, 0, s390_r1, S390_RET_ADDR_OFFSET);
4990 s390_la (code, s390_r1, 0, s390_r1, 0);
4991 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
4992
4993 /*---------------------------------------------------------------*/
4994 /* Save general and floating point registers */
4995 /*---------------------------------------------------------------*/
4996 s390_stm (code, s390_r2, s390_r12, s390_r13, G_STRUCT_OFFSET(MonoLMF, gregs[2]));
4997 for (i = 0; i < 16; i++) {
4998 s390_std (code, i, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, fregs[i]));
4999 }
5000
5001 /*---------------------------------------------------------------*/
5002 /* Restore the parameter registers now that we've set up the lmf */
5003 /*---------------------------------------------------------------*/
5004 s390_lr (code, s390_r2, s390_r7);
5005 s390_lr (code, s390_r3, s390_r8);
5006 s390_lr (code, s390_r4, s390_r9);
5007 s390_lr (code, s390_r5, s390_r10);
5008 }
5009
5010 if (tracing)
5011 code = mono_arch_instrument_prolog (cfg, enter_method, code, TRUE);
5012
5013 cfg->code_len = code - cfg->native_code;
5014 g_free (cinfo);
5015
5016 return code;
5017 }
5018
5019 /*========================= End of Function ========================*/
5020
5021 /*------------------------------------------------------------------*/
5022 /* */
5023 /* Name - mono_arch_emit_epilog */
5024 /* */
5025 /* Function - Emit the instructions for a function epilog. */
5026 /* */
5027 /*------------------------------------------------------------------*/
5028
5029 void
5030 mono_arch_emit_epilog (MonoCompile *cfg)
5031 {
5032 MonoJumpInfo *patch_info;
5033 MonoMethod *method = cfg->method;
5034 MonoMethodSignature *sig = method->signature;
5035 MonoInst *inst;
5036 int i, tracing = 0;
5037 guint8 *code;
5038
5039 code = cfg->native_code + cfg->code_len;
5040
5041 if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
5042 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
5043 tracing = 1;
5044 }
5045
5046 if (method->save_lmf)
5047 code = restoreLMF(cfg, code);
5048
5049 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
5050 s390_l (code, STK_BASE, 0, STK_BASE, 0);
5051 else
5052 code = backUpStackPtr(cfg, code);
5053
5054 s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
5055 s390_br (code, s390_r14);
5056
5057 /* add code to raise exceptions */
5058 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
5059 switch (patch_info->type) {
5060 case MONO_PATCH_INFO_EXC: {
5061 /*-----------------------------------------------------*/
5062 /* Patch the branch in epilog to come here */
5063 /*-----------------------------------------------------*/
5064 s390_patch (patch_info->ip.i+cfg->native_code+2,
5065 S390_RELATIVE(code,patch_info->ip.i+cfg->native_code));
5066 /*-----------------------------------------------------*/
5067 /* Patch the parameter passed to the handler */
5068 /*-----------------------------------------------------*/
5069 s390_basr (code, s390_r13, 0);
5070 s390_j (code, 4);
5071 mono_add_patch_info (cfg, code - cfg->native_code,
5072 MONO_PATCH_INFO_EXC_NAME,
5073 patch_info->data.target);
5074 s390_word (code, 0);
5075 /*-----------------------------------------------------*/
5076 /* Load the return address and the parameter register */
5077 /*-----------------------------------------------------*/
5078 s390_larl (code, s390_r14, S390_RELATIVE((patch_info->ip.i +
5079 cfg->native_code + 8), code));
5080 s390_l (code, s390_r2, 0, s390_r13, 4);
5081 /*-----------------------------------------------------*/
5082 /* Reuse the current patch to set the jump */
5083 /*-----------------------------------------------------*/
5084 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
5085 patch_info->data.name = "mono_arch_throw_exception_by_name";
5086 patch_info->ip.i = code - cfg->native_code;
5087 s390_jcl (code, S390_CC_UN, 0);
5088 break;
5089 }
5090 default:
5091 /* do nothing */
5092 break;
5093 }
5094 }
5095
5096 cfg->code_len = code - cfg->native_code;
5097
5098 g_assert (cfg->code_len < cfg->code_size);
5099
5100 }
5101
5102 /*========================= End of Function ========================*/
5103
5104 /*------------------------------------------------------------------*/
5105 /* */
5106 /* Name - mono_arch_setup_jit_tls_data */
5107 /* */
5108 /* Function - Setup the JIT's Thread Level Specific Data. */
5109 /* */
5110 /*------------------------------------------------------------------*/
5111
5112 void
5113 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
5114 {
5115 }
5116
5117 /*========================= End of Function ========================*/
5118
5119 /*------------------------------------------------------------------*/
5120 /* */
5121 /* Name - mono_arch_free_jit_tls_data */
5122 /* */
5123 /* Function - Free tls data. */
5124 /* */
5125 /*------------------------------------------------------------------*/
5126
5127 void
5128 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
5129 {
5130 }
5131
5132 /*========================= End of Function ========================*/
5133
5134 /*------------------------------------------------------------------*/
5135 /* */
5136 /* Name - mono_arch_emit_this_vret_args */
5137 /* */
5138 /* Function - */
5139 /* */
5140 /*------------------------------------------------------------------*/
5141
5142 void
5143 mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_reg, int this_type, int vt_reg)
5144 {
5145 int this_dreg = s390_r2;
5146
5147 if (vt_reg != -1)
5148 this_dreg = s390_r3;
5149
5150 /* add the this argument */
5151 if (this_reg != -1) {
5152 MonoInst *this;
5153 MONO_INST_NEW (cfg, this, OP_SETREG);
5154 this->type = this_type;
5155 this->sreg1 = this_reg;
5156 this->dreg = this_dreg;
5157 mono_bblock_add_inst (cfg->cbb, this);
5158 }
5159
5160 if (vt_reg != -1) {
5161 MonoInst *vtarg;
5162 MONO_INST_NEW (cfg, vtarg, OP_SETREG);
5163 vtarg->type = STACK_MP;
5164 vtarg->sreg1 = vt_reg;
5165 vtarg->dreg = s390_r2;
5166 mono_bblock_add_inst (cfg->cbb, vtarg);
5167 }
5168 }
5169
5170 /*========================= End of Function ========================*/
5171
5172 /*------------------------------------------------------------------*/
5173 /* */
5174 /* Name - mono_arch_get_opcode_for_method */
5175 /* */
5176 /* Function - Check for opcodes we can handle directly in */
5177 /* hardware. */
5178 /* */
5179 /*------------------------------------------------------------------*/
5180
5181 gint
5182 mono_arch_get_opcode_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5183 {
5184 if (cmethod->klass == mono_defaults.math_class) {
5185 if (strcmp (cmethod->name, "Sqrt") == 0)
5186 return OP_SQRT;
5187 }
5188 return -1;
5189 }
5190
5191 /*========================= End of Function ========================*/
5192
5193 /*------------------------------------------------------------------*/
5194 /* */
5195 /* Name - mono_arch_print_tree */
5196 /* */
5197 /* Function - Print platform-specific opcode details. */
5198 /* */
5199 /* Returns - 1 - opcode details have been printed */
5200 /* 0 - opcode details have not been printed */
5201 /* */
5202 /*------------------------------------------------------------------*/
5203
5204 gboolean
5205 mono_arch_print_tree (MonoInst *tree, int arity)
5206 {
5207 gboolean done;
5208
5209 switch (tree->opcode) {
5210 case OP_S390_LOADARG:
5211 case OP_S390_ARGPTR:
5212 case OP_S390_STKARG:
5213 printf ("[0x%x(%s)]", tree->inst_offset,
5214 mono_arch_regname (tree->inst_basereg));
5215 done = 1;
5216 break;
5217 case OP_S390_MOVE:
5218 printf ("[0x%x(%d,%s),0x%x(%s)]",
5219 tree->inst_offset, tree->unused,
5220 tree->dreg, tree->inst_imm,
5221 tree->sreg1);
5222 done = 1;
5223 break;
5224 case OP_S390_SETF4RET:
5225 printf ("[f%d,f%d]",
5226 mono_arch_regname (tree->dreg),
5227 mono_arch_regname (tree->sreg1));
5228 default:
5229 done = 0;
5230 }
5231 return (done);
5232 }
5233
5234 /*========================= End of Function ========================*/
5235
5236 /*------------------------------------------------------------------*/
5237 /* */
5238 /* Name - mono_arch_regalloc_cost */
5239 /* */
5240 /* Function - Determine the cost, in the number of memory */
5241 /* references, of the action of allocating the var- */
5242 /* iable VMV into a register during global register */
5243 /* allocation. */
5244 /* */
5245 /* Returns - Cost */
5246 /* */
5247 /*------------------------------------------------------------------*/
5248
5249 guint32
5250 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
5251 {
5252 /* FIXME: */
5253 return 3;
5254 }
5255
5256 /*========================= End of Function ========================*/
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