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* mini-s390.c, mini-s390x.c: Fix VARARG case processing with 0
[mono.git] / mono / mini / mini-s390.c
blobd889f71193d30d849dd5ed75950e6081de3feb32
1 /*------------------------------------------------------------------*/
2 /* */
3 /* Name - mini-s390.c */
4 /* */
5 /* Function - S/390 backend for the Mono code generator. */
6 /* */
7 /* Name - Neale Ferguson (Neale.Ferguson@SoftwareAG-usa.com) */
8 /* */
9 /* Date - January, 2004 */
10 /* */
11 /* Derivation - From mini-x86 & mini-ppc by - */
12 /* Paolo Molaro (lupus@ximian.com) */
13 /* Dietmar Maurer (dietmar@ximian.com) */
14 /* */
15 /*------------------------------------------------------------------*/
16
17 /*------------------------------------------------------------------*/
18 /* D e f i n e s */
19 /*------------------------------------------------------------------*/
20
21 #define NOT_IMPLEMENTED(x) \
22 g_error ("FIXME: %s is not yet implemented.", x);
23
24 #define EMIT_COND_BRANCH(ins,cond) \
25 { \
26 if (ins->flags & MONO_INST_BRLABEL) { \
27 if (ins->inst_i0->inst_c0) { \
28 int displace; \
29 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2; \
30 if (s390_is_imm16(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_imm16(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_imm16(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_imm16(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 #define CHECK_SRCDST_COM \
100 if (ins->dreg == ins->sreg2) { \
101 src2 = ins->sreg1; \
102 } else { \
103 src2 = ins->sreg2; \
104 if (ins->dreg != ins->sreg1) { \
105 s390_lr (code, ins->dreg, ins->sreg1); \
106 } \
107 }
108
109 #define CHECK_SRCDST_NCOM \
110 if (ins->dreg == ins->sreg2) { \
111 src2 = s390_r13; \
112 s390_lr (code, s390_r13, ins->sreg2); \
113 } else { \
114 src2 = ins->sreg2; \
115 } \
116 if (ins->dreg != ins->sreg1) { \
117 s390_lr (code, ins->dreg, ins->sreg1); \
118 }
119
120 #define CHECK_SRCDST_COM_F \
121 if (ins->dreg == ins->sreg2) { \
122 src2 = ins->sreg1; \
123 } else { \
124 src2 = ins->sreg2; \
125 if (ins->dreg != ins->sreg1) { \
126 s390_ldr (code, ins->dreg, ins->sreg1); \
127 } \
128 }
129
130 #define CHECK_SRCDST_NCOM_F \
131 if (ins->dreg == ins->sreg2) { \
132 src2 = s390_f15; \
133 s390_ldr (code, s390_r13, ins->sreg2); \
134 } else { \
135 src2 = ins->sreg2; \
136 } \
137 if (ins->dreg != ins->sreg1) { \
138 s390_ldr (code, ins->dreg, ins->sreg1); \
139 }
140
141 #undef DEBUG
142 #define DEBUG(a) if (cfg->verbose_level > 1) a
143
144 #define MAX_EXC 16
145
146 #define S390_TRACE_STACK_SIZE (5*sizeof(gint32)+3*sizeof(gdouble))
147
148 #define MAX (a, b) ((a) > (b) ? (a) : (b))
149
150 /*========================= End of Defines =========================*/
151
152 /*------------------------------------------------------------------*/
153 /* I n c l u d e s */
154 /*------------------------------------------------------------------*/
155
156 #include "mini.h"
157 #include <string.h>
158
159 #include <mono/metadata/appdomain.h>
160 #include <mono/metadata/debug-helpers.h>
161 #include <mono/metadata/profiler-private.h>
162 #include <mono/utils/mono-math.h>
163
164 #include "mini-s390.h"
165 #include "inssel.h"
166 #include "cpu-s390.h"
167
168 /*========================= End of Includes ========================*/
169
170 /*------------------------------------------------------------------*/
171 /* T y p e d e f s */
172 /*------------------------------------------------------------------*/
173
174 typedef struct {
175 guint stack_size,
176 local_size,
177 code_size,
178 parm_size,
179 offset,
180 offStruct,
181 retStruct;
182 } size_data;
183
184 /*------------------------------------------------------------------*/
185 /* Used by the instrument_emit_epilog */
186 /*------------------------------------------------------------------*/
187
188 enum {
189 SAVE_NONE,
190 SAVE_STRUCT,
191 SAVE_ONE,
192 SAVE_TWO,
193 SAVE_R4,
194 SAVE_R8
195 };
196
197 typedef struct InstList InstList;
198
199 struct InstList {
200 InstList *prev;
201 InstList *next;
202 MonoInst *data;
203 };
204
205 enum {
206 RegTypeGeneral,
207 RegTypeBase,
208 RegTypeFP,
209 RegTypeStructByVal,
210 RegTypeStructByAddr
211 };
212
213 typedef struct {
214 gint32 offset; /* offset from caller's stack */
215 gint32 offparm; /* offset from callee's stack */
216 guint16 vtsize; /* in param area */
217 guint8 reg;
218 guint8 regtype; /* See RegType* */
219 guint32 size; /* Size of structure used by RegTypeStructByVal */
220 } ArgInfo;
221
222 typedef struct {
223 int nargs;
224 int lastgr;
225 guint32 stack_usage;
226 guint32 struct_ret;
227 ArgInfo ret;
228 ArgInfo sigCookie;
229 ArgInfo args [1];
230 } CallInfo;
231
232 typedef struct {
233 gint32 gr[5]; /* R2-R6 */
234 gdouble fp[3]; /* F0-F2 */
235 } __attribute__ ((packed)) RegParm;
236
237 /*========================= End of Typedefs ========================*/
238
239 /*------------------------------------------------------------------*/
240 /* P r o t o t y p e s */
241 /*------------------------------------------------------------------*/
242
243 static void indent (int);
244 static guint8 * backUpStackPtr(MonoCompile *, guint8 *, gint);
245 static void decodeParm (MonoType *, void *, int);
246 static void enter_method (MonoMethod *, RegParm *, char *);
247 static void leave_method (MonoMethod *, ...);
248 static gboolean is_regsize_var (MonoType *);
249 static inline void add_general (guint *, size_data *, ArgInfo *, gboolean);
250 static inline void add_stackParm (guint *, size_data *, ArgInfo *, gint);
251 static inline void add_float (guint *, size_data *, ArgInfo *);
252 static CallInfo * calculate_sizes (MonoMethodSignature *, size_data *, gboolean);
253 static void peephole_pass (MonoCompile *, MonoBasicBlock *);
254 static guchar * emit_float_to_int (MonoCompile *, guchar *, int, int, int, gboolean);
255 static void mono_arch_break(void);
256 gpointer mono_arch_get_lmf_addr (void);
257 static guint8 * emit_load_volatile_registers(guint8 *, MonoCompile *);
258 static void emit_sig_cookie (MonoCompile *, MonoCallInst *, CallInfo *, int);
259
260 /*========================= End of Prototypes ======================*/
261
262 /*------------------------------------------------------------------*/
263 /* G l o b a l V a r i a b l e s */
264 /*------------------------------------------------------------------*/
265
266 int mono_exc_esp_offset = 0;
267
268 static int indent_level = 0;
269
270 static const char*const * ins_spec = s390_cpu_desc;
271
272 static gboolean tls_offset_inited = FALSE;
273
274 static int appdomain_tls_offset = -1,
275 lmf_tls_offset = -1,
276 thread_tls_offset = -1;
277
278 pthread_key_t lmf_addr_key;
279
280 gboolean lmf_addr_key_inited = FALSE;
281
282 #if 0
283
284 extern __thread MonoDomain *tls_appdomain;
285 extern __thread MonoThread *tls_current_object;
286 extern __thread gpointer mono_lmf_addr;
287
288 #endif
289
290 /*====================== End of Global Variables ===================*/
291
292 /*------------------------------------------------------------------*/
293 /* */
294 /* Name - mono_arch_regname */
295 /* */
296 /* Function - Returns the name of the register specified by */
297 /* the input parameter. */
298 /* */
299 /*------------------------------------------------------------------*/
300
301 const char*
302 mono_arch_regname (int reg) {
303 static const char * rnames[] = {
304 "s390_r0", "s390_sp", "s390_r2", "s390_r3", "s390_r4",
305 "s390_r5", "s390_r6", "s390_r7", "s390_r8", "s390_r9",
306 "s390_r10", "s390_r11", "s390_r12", "s390_r13", "s390_r14",
307 "s390_r15"
308 };
309
310 if (reg >= 0 && reg < 16)
311 return rnames [reg];
312 else
313 return "unknown";
314 }
315
316 /*========================= End of Function ========================*/
317
318 /*------------------------------------------------------------------*/
319 /* */
320 /* Name - mono_arch_fregname */
321 /* */
322 /* Function - Returns the name of the register specified by */
323 /* the input parameter. */
324 /* */
325 /*------------------------------------------------------------------*/
326
327 const char*
328 mono_arch_fregname (int reg) {
329 static const char * rnames[] = {
330 "s390_f0", "s390_f1", "s390_f2", "s390_f3", "s390_f4",
331 "s390_f5", "s390_f6", "s390_f7", "s390_f8", "s390_f9",
332 "s390_f10", "s390_f11", "s390_f12", "s390_f13", "s390_f14",
333 "s390_f15"
334 };
335
336 if (reg >= 0 && reg < 16)
337 return rnames [reg];
338 else
339 return "unknown";
340 }
341
342 /*========================= End of Function ========================*/
343
344 /*------------------------------------------------------------------*/
345 /* */
346 /* Name - arch_get_argument_info */
347 /* */
348 /* Function - Gathers information on parameters such as size, */
349 /* alignment, and padding. arg_info should be large */
350 /* enough to hold param_count + 1 entries. */
351 /* */
352 /* Parameters - @csig - Method signature */
353 /* @param_count - No. of parameters to consider */
354 /* @arg_info - An array to store the result info */
355 /* */
356 /* Returns - Size of the activation frame */
357 /* */
358 /*------------------------------------------------------------------*/
359
360 int
361 mono_arch_get_argument_info (MonoMethodSignature *csig,
362 int param_count,
363 MonoJitArgumentInfo *arg_info)
364 {
365 int k, frame_size = 0;
366 int size, align, pad;
367 int offset = 8;
368
369 if (MONO_TYPE_ISSTRUCT (csig->ret)) {
370 frame_size += sizeof (gpointer);
371 offset += 4;
372 }
373
374 arg_info [0].offset = offset;
375
376 if (csig->hasthis) {
377 frame_size += sizeof (gpointer);
378 offset += 4;
379 }
380
381 arg_info [0].size = frame_size;
382
383 for (k = 0; k < param_count; k++) {
384
385 if (csig->pinvoke)
386 size = mono_type_native_stack_size (csig->params [k], &align);
387 else
388 size = mono_type_stack_size (csig->params [k], &align);
389
390 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
391 arg_info [k].pad = pad;
392 frame_size += size;
393 arg_info [k + 1].pad = 0;
394 arg_info [k + 1].size = size;
395 offset += pad;
396 arg_info [k + 1].offset = offset;
397 offset += size;
398 }
399
400 align = MONO_ARCH_FRAME_ALIGNMENT;
401 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
402 arg_info [k].pad = pad;
403
404 return frame_size;
405 }
406
407 /*========================= End of Function ========================*/
408
409 /*------------------------------------------------------------------*/
410 /* */
411 /* Name - retFitsInReg. */
412 /* */
413 /* Function - Determines if a value can be returned in one or */
414 /* two registers. */
415 /* */
416 /*------------------------------------------------------------------*/
417
418 static inline gboolean
419 retFitsInReg(guint32 size)
420 {
421 switch (size) {
422 case 0:
423 case 1:
424 case 2:
425 case 4:
426 case 8:
427 return (TRUE);
428 break;
429 default:
430 return (FALSE);
431 }
432 }
433
434 /*========================= End of Function ========================*/
435
436 /*------------------------------------------------------------------*/
437 /* */
438 /* Name - backStackPtr. */
439 /* */
440 /* Function - Restore Stack Pointer to previous frame. */
441 /* */
442 /*------------------------------------------------------------------*/
443
444 static inline guint8 *
445 backUpStackPtr(MonoCompile *cfg, guint8 *code, gint framePtr)
446 {
447 int stackSize = cfg->stack_usage;
448
449 if (s390_is_uimm16 (cfg->stack_usage)) {
450 s390_ahi (code, framePtr, cfg->stack_usage);
451 } else {
452 while (stackSize > 32767) {
453 s390_ahi (code, framePtr, 32767);
454 stackSize -= 32767;
455 }
456 s390_ahi (code, framePtr, stackSize);
457 }
458 return (code);
459 }
460
461 /*========================= End of Function ========================*/
462
463 /*------------------------------------------------------------------*/
464 /* */
465 /* Name - indent */
466 /* */
467 /* Function - Perform nice indenting to current level */
468 /* */
469 /*------------------------------------------------------------------*/
470
471 static void
472 indent (int diff) {
473 int v;
474 if (diff < 0)
475 indent_level += diff;
476 v = indent_level;
477 printf("[%3d] ",v);
478 while (v-- > 0) {
479 printf (". ");
480 }
481 if (diff > 0)
482 indent_level += diff;
483 }
484
485 /*========================= End of Function ========================*/
486
487 /*------------------------------------------------------------------*/
488 /* */
489 /* Name - decodeParm */
490 /* */
491 /* Function - Decode a parameter for the trace. */
492 /* */
493 /*------------------------------------------------------------------*/
494
495 static void
496 decodeParm(MonoType *type, void *curParm, int size)
497 {
498 guint32 simpleType;
499
500 if (type->byref) {
501 printf("[BYREF:%p], ", *((char **) curParm));
502 } else {
503 simpleType = mono_type_get_underlying_type(type)->type;
504 enum_parmtype:
505 switch (simpleType) {
506 case MONO_TYPE_I :
507 printf ("[INTPTR:%p], ", *((int **) curParm));
508 break;
509 case MONO_TYPE_U :
510 printf ("[UINTPTR:%p], ", *((int **) curParm));
511 break;
512 case MONO_TYPE_BOOLEAN :
513 printf ("[BOOL:%d], ", *((int *) curParm));
514 break;
515 case MONO_TYPE_CHAR :
516 printf ("[CHAR:%c], ", *((int *) curParm));
517 break;
518 case MONO_TYPE_I1 :
519 printf ("[INT1:%d], ", *((int *) curParm));
520 break;
521 case MONO_TYPE_I2 :
522 printf ("[INT2:%d], ", *((int *) curParm));
523 break;
524 case MONO_TYPE_I4 :
525 printf ("[INT4:%d], ", *((int *) curParm));
526 break;
527 case MONO_TYPE_U1 :
528 printf ("[UINT1:%u], ", *((unsigned int *) curParm));
529 break;
530 case MONO_TYPE_U2 :
531 printf ("[UINT2:%u], ", *((guint16 *) curParm));
532 break;
533 case MONO_TYPE_U4 :
534 printf ("[UINT4:%u], ", *((guint32 *) curParm));
535 break;
536 case MONO_TYPE_U8 :
537 printf ("[UINT8:%llu], ", *((guint64 *) curParm));
538 break;
539 case MONO_TYPE_STRING : {
540 MonoString *s = *((MonoString **) curParm);
541 if (s) {
542 g_assert (((MonoObject *) s)->vtable->klass == mono_defaults.string_class);
543 printf("[STRING:%p:%s], ", s, mono_string_to_utf8(s));
544 } else {
545 printf("[STRING:null], ");
546 }
547 break;
548 }
549 case MONO_TYPE_CLASS :
550 case MONO_TYPE_OBJECT : {
551 MonoObject *obj = *((MonoObject **) curParm);
552 MonoClass *class;
553 if ((obj) && (obj->vtable)) {
554 printf("[CLASS/OBJ:");
555 class = obj->vtable->klass;
556 printf("%p [%p] ",obj,curParm);
557 // if (class == mono_defaults.string_class) {
558 // printf("[STRING:%p:%s]",
559 // *obj, mono_string_to_utf8 (obj));
560 // } else if (class == mono_defaults.int32_class) {
561 // printf("[INT32:%p:%d]",
562 // obj, *(gint32 *)((char *)obj + sizeof (MonoObject)));
563 // } else
564 // printf("[%s.%s:%p]",
565 // class->name_space, class->name, obj);
566 printf("], ");
567 } else {
568 printf("[OBJECT:null], ");
569 }
570 break;
571 }
572 case MONO_TYPE_PTR :
573 printf("[PTR:%p], ", *((gpointer **) (curParm)));
574 break;
575 case MONO_TYPE_FNPTR :
576 printf("[FNPTR:%p], ", *((gpointer **) (curParm)));
577 break;
578 case MONO_TYPE_ARRAY :
579 printf("[ARRAY:%p], ", *((gpointer **) (curParm)));
580 break;
581 case MONO_TYPE_SZARRAY :
582 printf("[SZARRAY:%p], ", *((gpointer **) (curParm)));
583 break;
584 case MONO_TYPE_I8 :
585 printf("[INT8:%lld], ", *((gint64 *) (curParm)));
586 break;
587 case MONO_TYPE_R4 :
588 printf("[FLOAT4:%g], ", *((double *) (curParm)));
589 break;
590 case MONO_TYPE_R8 :
591 printf("[FLOAT8:%g], ", *((double *) (curParm)));
592 break;
593 case MONO_TYPE_VALUETYPE : {
594 int i;
595 MonoMarshalType *info;
596
597 if (type->data.klass->enumtype) {
598 simpleType = type->data.klass->enum_basetype->type;
599 printf("{VALUETYPE} - ");
600 goto enum_parmtype;
601 }
602
603 info = mono_marshal_load_type_info (type->data.klass);
604
605 if ((info->native_size == sizeof(float)) &&
606 (info->num_fields == 1) &&
607 (info->fields[0].field->type->type == MONO_TYPE_R4)) {
608 printf("[FLOAT4:%f], ", *((float *) (curParm)));
609 break;
610 }
611
612 if ((info->native_size == sizeof(double)) &&
613 (info->num_fields == 1) &&
614 (info->fields[0].field->type->type == MONO_TYPE_R8)) {
615 printf("[FLOAT8:%g], ", *((double *) (curParm)));
616 break;
617 }
618
619 printf("[VALUETYPE:");
620 for (i = 0; i < size; i++)
621 printf("%02x,", *((guint8 *)curParm+i));
622 printf("]");
623 break;
624 }
625 case MONO_TYPE_TYPEDBYREF: {
626 int i;
627 printf("[TYPEDBYREF:");
628 for (i = 0; i < size; i++)
629 printf("%02x,", *((guint8 *)curParm+i));
630 printf("]");
631 break;
632 }
633 default :
634 printf("[?? - %d], ",simpleType);
635 }
636 }
637 }
638
639 /*========================= End of Function ========================*/
640
641 static int lc = 0;
642 /*------------------------------------------------------------------*/
643 /* */
644 /* Name - enter_method */
645 /* */
646 /* Function - Perform tracing of the entry to the current */
647 /* method. */
648 /* */
649 /*------------------------------------------------------------------*/
650
651 static void
652 enter_method (MonoMethod *method, RegParm *rParm, char *sp)
653 {
654 int i, oParm = 0, iParm = 0;
655 MonoClass *class;
656 MonoObject *obj;
657 MonoMethodSignature *sig;
658 char *fname;
659 guint32 ip;
660 CallInfo *cinfo;
661 ArgInfo *ainfo;
662 size_data sz;
663 void *curParm;
664
665
666 lc++;
667 if (lc > 5000000) {
668 fseek(stdout, 0L, SEEK_SET);
669 lc = 0;
670 }
671 fname = mono_method_full_name (method, TRUE);
672 indent (1);
673 printf ("ENTER: %s(", fname);
674 g_free (fname);
675
676 ip = (*(guint32 *) (sp+S390_RET_ADDR_OFFSET)) & 0x7fffffff;
677 printf (") ip: %p sp: %p - ", (gpointer) ip, sp);
678
679 if (rParm == NULL)
680 return;
681
682 sig = mono_method_signature (method);
683
684 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
685
686 if (cinfo->struct_ret) {
687 printf ("[STRUCTRET:%p], ", (gpointer) rParm->gr[0]);
688 iParm = 1;
689 }
690
691 if (sig->hasthis) {
692 gpointer *this = (gpointer *) rParm->gr[iParm];
693 obj = (MonoObject *) this;
694 if (method->klass->valuetype) {
695 if (obj) {
696 printf("this:[value:%p:%08x], ",
697 this, *((guint32 *)(this+sizeof(MonoObject))));
698 } else
699 printf ("this:[NULL], ");
700 } else {
701 if (obj) {
702 // class = obj->vtable->klass;
703 // if (class == mono_defaults.string_class) {
704 // printf ("this:[STRING:%p:%s], ",
705 // obj, mono_string_to_utf8 ((MonoString *)obj));
706 // } else {
707 // printf ("this:%p[%s.%s], ",
708 // obj, class->name_space, class->name);
709 // }
710 printf("this:%p, ",obj);
711 } else
712 printf ("this:NULL, ");
713 }
714 oParm++;
715 }
716
717 for (i = 0; i < sig->param_count; ++i) {
718 ainfo = &cinfo->args[i + oParm];
719 switch (ainfo->regtype) {
720 case RegTypeGeneral :
721 decodeParm(sig->params[i], &(rParm->gr[ainfo->reg-2]), ainfo->size);
722 break;
723 case RegTypeFP :
724 decodeParm(sig->params[i], &(rParm->fp[ainfo->reg]), ainfo->size);
725 break;
726 case RegTypeBase :
727 decodeParm(sig->params[i], sp+ainfo->offset, ainfo->size);
728 break;
729 case RegTypeStructByVal :
730 if (ainfo->reg != STK_BASE)
731 curParm = &(rParm->gr[ainfo->reg-2]);
732 else
733 curParm = sp+ainfo->offset;
734
735 if (retFitsInReg (ainfo->vtsize))
736 decodeParm(sig->params[i],
737 curParm,
738 ainfo->size);
739 else
740 decodeParm(sig->params[i],
741 *((char **) curParm),
742 ainfo->vtsize);
743 break;
744 case RegTypeStructByAddr :
745 if (ainfo->reg != STK_BASE)
746 curParm = &(rParm->gr[ainfo->reg-2]);
747 else
748 curParm = sp+ainfo->offset;
749
750 decodeParm(sig->params[i],
751 *((char **) curParm),
752 ainfo->vtsize);
753 break;
754
755 default :
756 printf("???, ");
757 }
758 }
759 printf("\n");
760 g_free(cinfo);
761 }
762
763 /*========================= End of Function ========================*/
764
765 /*------------------------------------------------------------------*/
766 /* */
767 /* Name - leave_method */
768 /* */
769 /* Function - */
770 /* */
771 /*------------------------------------------------------------------*/
772
773 static void
774 leave_method (MonoMethod *method, ...)
775 {
776 MonoType *type;
777 char *fname;
778 guint32 ip;
779 va_list ap;
780
781 va_start(ap, method);
782
783 fname = mono_method_full_name (method, TRUE);
784 indent (-1);
785 printf ("LEAVE: %s", fname);
786 g_free (fname);
787
788 type = mono_method_signature (method)->ret;
789
790 handle_enum:
791 switch (type->type) {
792 case MONO_TYPE_VOID:
793 break;
794 case MONO_TYPE_BOOLEAN: {
795 int val = va_arg (ap, int);
796 if (val)
797 printf ("[TRUE:%d]", val);
798 else
799 printf ("[FALSE]");
800
801 break;
802 }
803 case MONO_TYPE_CHAR: {
804 int val = va_arg (ap, int);
805 printf ("[CHAR:%d]", val);
806 break;
807 }
808 case MONO_TYPE_I1: {
809 int val = va_arg (ap, int);
810 printf ("[INT1:%d]", val);
811 break;
812 }
813 case MONO_TYPE_U1: {
814 int val = va_arg (ap, int);
815 printf ("[UINT1:%d]", val);
816 break;
817 }
818 case MONO_TYPE_I2: {
819 int val = va_arg (ap, int);
820 printf ("[INT2:%d]", val);
821 break;
822 }
823 case MONO_TYPE_U2: {
824 int val = va_arg (ap, int);
825 printf ("[UINT2:%d]", val);
826 break;
827 }
828 case MONO_TYPE_I4: {
829 int val = va_arg (ap, int);
830 printf ("[INT4:%d]", val);
831 break;
832 }
833 case MONO_TYPE_U4: {
834 int val = va_arg (ap, int);
835 printf ("[UINT4:%d]", val);
836 break;
837 }
838 case MONO_TYPE_I: {
839 int val = va_arg (ap, int);
840 printf ("[INT:%d]", val);
841 printf("]");
842 break;
843 }
844 case MONO_TYPE_U: {
845 int val = va_arg (ap, int);
846 printf ("[UINT:%d]", val);
847 printf("]");
848 break;
849 }
850 case MONO_TYPE_STRING: {
851 MonoString *s = va_arg (ap, MonoString *);
852 ;
853 if (s) {
854 g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
855 printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
856 } else
857 printf ("[STRING:null], ");
858 break;
859 }
860 case MONO_TYPE_CLASS:
861 case MONO_TYPE_OBJECT: {
862 MonoObject *o = va_arg (ap, MonoObject *);
863
864 // if ((o) && (o->vtable)) {
865 // if (o->vtable->klass == mono_defaults.boolean_class) {
866 // printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
867 // } else if (o->vtable->klass == mono_defaults.int32_class) {
868 // printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
869 // } else if (o->vtable->klass == mono_defaults.int64_class) {
870 // printf ("[INT64:%p:%lld]", o, *((gint64 *)((char *)o + sizeof (MonoObject))));
871 // } else
872 // printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
873 // } else
874 printf ("[OBJECT:%p]", o);
875
876 break;
877 }
878 case MONO_TYPE_PTR:
879 case MONO_TYPE_FNPTR:
880 case MONO_TYPE_ARRAY:
881 case MONO_TYPE_SZARRAY: {
882 gpointer p = va_arg (ap, gpointer);
883 printf ("[result=%p]", p);
884 break;
885 }
886 case MONO_TYPE_I8: {
887 gint64 l = va_arg (ap, gint64);
888 printf ("[LONG:%lld]", l);
889 break;
890 }
891 case MONO_TYPE_U8: {
892 guint64 l = va_arg (ap, guint64);
893 printf ("[ULONG:%llu]", l);
894 break;
895 }
896 case MONO_TYPE_R4: {
897 double f;
898 f = va_arg (ap, double);
899 printf ("[FLOAT4:%g]\n", f);
900 break;
901 }
902 case MONO_TYPE_R8: {
903 double f = va_arg (ap, double);
904 printf ("[FLOAT8:%g]\n", f);
905 break;
906 }
907 case MONO_TYPE_VALUETYPE: {
908 MonoMarshalType *info;
909 if (type->data.klass->enumtype) {
910 type = type->data.klass->enum_basetype;
911 goto handle_enum;
912 } else {
913 guint8 *p = va_arg (ap, gpointer);
914 int j, size, align;
915
916 info = mono_marshal_load_type_info (type->data.klass);
917
918 if ((info->native_size == sizeof(float)) &&
919 (info->num_fields == 1) &&
920 (info->fields[0].field->type->type == MONO_TYPE_R4)) {
921 double f = va_arg (ap, double);
922 printf("[FLOAT4:%g]\n", (double) f);
923 break;
924 }
925
926 if ((info->native_size == sizeof(double)) &&
927 (info->num_fields == 1) &&
928 (info->fields[0].field->type->type == MONO_TYPE_R8)) {
929 double f = va_arg (ap, double);
930 printf("[FLOAT8:%g]\n", f);
931 break;
932 }
933
934 size = mono_type_size (type, &align);
935 switch (size) {
936 case 1:
937 case 2:
938 case 4:
939 case 8:
940 printf ("[");
941 for (j = 0; p && j < size; j++)
942 printf ("%02x,", p [j]);
943 printf ("]\n");
944 break;
945 default:
946 printf ("[VALUERET]\n");
947 }
948 }
949 break;
950 }
951 case MONO_TYPE_TYPEDBYREF: {
952 guint8 *p = va_arg (ap, gpointer);
953 int j, size, align;
954 size = mono_type_size (type, &align);
955 switch (size) {
956 case 1:
957 case 2:
958 case 4:
959 case 8:
960 printf ("[");
961 for (j = 0; p && j < size; j++)
962 printf ("%02x,", p [j]);
963 printf ("]\n");
964 break;
965 default:
966 printf ("[TYPEDBYREF]\n");
967 }
968 }
969 break;
970 default:
971 printf ("(unknown return type %x)",
972 mono_method_signature (method)->ret->type);
973 }
974
975 ip = ((gint32) __builtin_return_address (0)) & 0x7fffffff;
976 printf (" ip: %p\n", (gpointer) ip);
977 }
978
979 /*========================= End of Function ========================*/
980
981 /*------------------------------------------------------------------*/
982 /* */
983 /* Name - mono_arch_cpu_init */
984 /* */
985 /* Function - Perform CPU specific initialization to execute */
986 /* managed code. */
987 /* */
988 /*------------------------------------------------------------------*/
989
990 void
991 mono_arch_cpu_init (void)
992 {
993 guint mode = 1;
994
995 /*--------------------------------------*/
996 /* Set default rounding mode for FP */
997 /*--------------------------------------*/
998 __asm__ ("SRNM\t%0\n\t"
999 : : "m" (mode));
1000 }
1001
1002 /*========================= End of Function ========================*/
1003
1004 /*------------------------------------------------------------------*/
1005 /* */
1006 /* Name - mono_arch_cpu_optimizazions */
1007 /* */
1008 /* Function - Returns the optimizations supported on this CPU */
1009 /* */
1010 /*------------------------------------------------------------------*/
1011
1012 guint32
1013 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
1014 {
1015 guint32 opts = 0;
1016
1017 /*----------------------------------------------------------*/
1018 /* no s390-specific optimizations yet */
1019 /*----------------------------------------------------------*/
1020 *exclude_mask = MONO_OPT_INLINE|MONO_OPT_LINEARS;
1021 // *exclude_mask = MONO_OPT_INLINE;
1022 return opts;
1023 }
1024
1025 /*========================= End of Function ========================*/
1026
1027 /*------------------------------------------------------------------*/
1028 /* */
1029 /* Name - */
1030 /* */
1031 /* Function - */
1032 /* */
1033 /*------------------------------------------------------------------*/
1034
1035 static gboolean
1036 is_regsize_var (MonoType *t) {
1037 if (t->byref)
1038 return TRUE;
1039 switch (mono_type_get_underlying_type (t)->type) {
1040 case MONO_TYPE_I4:
1041 case MONO_TYPE_U4:
1042 case MONO_TYPE_I:
1043 case MONO_TYPE_U:
1044 return TRUE;
1045 case MONO_TYPE_OBJECT:
1046 case MONO_TYPE_STRING:
1047 case MONO_TYPE_CLASS:
1048 case MONO_TYPE_SZARRAY:
1049 case MONO_TYPE_ARRAY:
1050 return FALSE;
1051 case MONO_TYPE_VALUETYPE:
1052 if (t->data.klass->enumtype)
1053 return is_regsize_var (t->data.klass->enum_basetype);
1054 return FALSE;
1055 }
1056 return FALSE;
1057 }
1058
1059 /*========================= End of Function ========================*/
1060
1061 /*------------------------------------------------------------------*/
1062 /* */
1063 /* Name - mono_arch_get_allocatable_int_vars */
1064 /* */
1065 /* Function - */
1066 /* */
1067 /*------------------------------------------------------------------*/
1068
1069 GList *
1070 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
1071 {
1072 GList *vars = NULL;
1073 int i;
1074
1075 for (i = 0; i < cfg->num_varinfo; i++) {
1076 MonoInst *ins = cfg->varinfo [i];
1077 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
1078
1079 /* unused vars */
1080 if (vmv->range.first_use.abs_pos >= vmv->range.last_use.abs_pos)
1081 continue;
1082
1083 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT) ||
1084 (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
1085 continue;
1086
1087 /* we can only allocate 32 bit values */
1088 if (is_regsize_var (ins->inst_vtype)) {
1089 g_assert (MONO_VARINFO (cfg, i)->reg == -1);
1090 g_assert (i == vmv->idx);
1091 vars = mono_varlist_insert_sorted (cfg, vars, vmv, FALSE);
1092 }
1093 }
1094
1095 return vars;
1096 }
1097
1098 /*========================= End of Function ========================*/
1099
1100 /*------------------------------------------------------------------*/
1101 /* */
1102 /* Name - mono_arch_global_int_regs */
1103 /* */
1104 /* Function - Return a list of usable integer registers. */
1105 /* */
1106 /*------------------------------------------------------------------*/
1107
1108 GList *
1109 mono_arch_get_global_int_regs (MonoCompile *cfg)
1110 {
1111 GList *regs = NULL;
1112 MonoMethodHeader *header;
1113 int i, top = 13;
1114
1115 header = mono_method_get_header (cfg->method);
1116 if ((cfg->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1117 cfg->frame_reg = s390_r11;
1118
1119 for (i = 8; i < top; ++i) {
1120 if (cfg->frame_reg != i)
1121 regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
1122 }
1123
1124 return regs;
1125 }
1126
1127 /*========================= End of Function ========================*/
1128
1129 /*------------------------------------------------------------------*/
1130 /* */
1131 /* Name - mono_arch_flush_icache */
1132 /* */
1133 /* Function - Flush the CPU icache. */
1134 /* */
1135 /*------------------------------------------------------------------*/
1136
1137 void
1138 mono_arch_flush_icache (guint8 *code, gint size)
1139 {
1140 }
1141
1142 /*========================= End of Function ========================*/
1143
1144 /*------------------------------------------------------------------*/
1145 /* */
1146 /* Name - add_general */
1147 /* */
1148 /* Function - Determine code and stack size incremements for a */
1149 /* parameter. */
1150 /* */
1151 /*------------------------------------------------------------------*/
1152
1153 static void inline
1154 add_general (guint *gr, size_data *sz, ArgInfo *ainfo, gboolean simple)
1155 {
1156 if (simple) {
1157 if (*gr > S390_LAST_ARG_REG) {
1158 sz->stack_size = S390_ALIGN(sz->stack_size, sizeof(long));
1159 ainfo->offset = sz->stack_size;
1160 ainfo->reg = STK_BASE;
1161 ainfo->regtype = RegTypeBase;
1162 sz->stack_size += sizeof(int);
1163 sz->local_size += sizeof(int);
1164 sz->offStruct += sizeof(int);
1165 sz->code_size += 12;
1166 } else {
1167 ainfo->reg = *gr;
1168 sz->code_size += 8;
1169 }
1170 } else {
1171 if (*gr > S390_LAST_ARG_REG - 1) {
1172 sz->stack_size = S390_ALIGN(sz->stack_size, S390_STACK_ALIGNMENT);
1173 ainfo->offset = sz->stack_size;
1174 ainfo->reg = STK_BASE;
1175 ainfo->regtype = RegTypeBase;
1176 sz->stack_size += sizeof(long long);
1177 sz->local_size += sizeof(long long);
1178 sz->offStruct += sizeof(long long);
1179 sz->code_size += 10;
1180 } else {
1181 ainfo->reg = *gr;
1182 sz->code_size += 8;
1183 }
1184 (*gr) ++;
1185 }
1186 (*gr) ++;
1187 }
1188
1189 /*========================= End of Function ========================*/
1190
1191 /*------------------------------------------------------------------*/
1192 /* */
1193 /* Name - add_stackParm */
1194 /* */
1195 /* Function - Determine code and stack size incremements for a */
1196 /* parameter. */
1197 /* */
1198 /*------------------------------------------------------------------*/
1199
1200 static void inline
1201 add_stackParm (guint *gr, size_data *sz, ArgInfo *ainfo, gint size)
1202 {
1203 if (*gr > S390_LAST_ARG_REG) {
1204 sz->stack_size = S390_ALIGN(sz->stack_size, sizeof(long));
1205 ainfo->reg = STK_BASE;
1206 sz->parm_size += sizeof(gpointer);
1207 sz->offStruct += sizeof(gpointer);
1208 } else {
1209 ainfo->reg = *gr;
1210 }
1211 (*gr) ++;
1212 ainfo->offset = sz->stack_size;
1213 ainfo->offparm = sz->offset;
1214 sz->offset = S390_ALIGN(sz->offset+size, sizeof(long));
1215 ainfo->size = size;
1216 ainfo->regtype = RegTypeStructByAddr;
1217 ainfo->vtsize = size;
1218 sz->parm_size += size;
1219 }
1220
1221 /*========================= End of Function ========================*/
1222
1223 /*------------------------------------------------------------------*/
1224 /* */
1225 /* Name - add_float */
1226 /* */
1227 /* Function - Determine code and stack size incremements for a */
1228 /* float parameter. */
1229 /* */
1230 /*------------------------------------------------------------------*/
1231
1232 static void inline
1233 add_float (guint *fr, size_data *sz, ArgInfo *ainfo)
1234 {
1235 if ((*fr) <= S390_LAST_FPARG_REG) {
1236 ainfo->regtype = RegTypeFP;
1237 ainfo->reg = *fr;
1238 sz->code_size += 4;
1239 (*fr) += 2;
1240 }
1241 else {
1242 ainfo->offset = sz->stack_size;
1243 ainfo->reg = STK_BASE;
1244 ainfo->regtype = RegTypeBase;
1245 sz->code_size += 4;
1246 sz->stack_size += ainfo->size;
1247 sz->local_size += ainfo->size;
1248 sz->offStruct += ainfo->size;
1249 }
1250 }
1251
1252 /*========================= End of Function ========================*/
1253
1254 /*------------------------------------------------------------------*/
1255 /* */
1256 /* Name - calculate_sizes */
1257 /* */
1258 /* Function - Determine the amount of space required for code */
1259 /* and stack. In addition determine starting points */
1260 /* for stack-based parameters, and area for struct- */
1261 /* ures being returned on the stack. */
1262 /* */
1263 /*------------------------------------------------------------------*/
1264
1265 static CallInfo *
1266 calculate_sizes (MonoMethodSignature *sig, size_data *sz,
1267 gboolean string_ctor)
1268 {
1269 guint i, fr, gr, size;
1270 int nParm = sig->hasthis + sig->param_count;
1271 guint32 simpletype, align;
1272 CallInfo *cinfo = g_malloc0 (sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1273
1274 fr = 0;
1275 gr = s390_r2;
1276 nParm = 0;
1277 cinfo->struct_ret = 0;
1278 sz->offset = 0;
1279 sz->offStruct = S390_MINIMAL_STACK_SIZE;
1280 sz->retStruct = 0;
1281 sz->stack_size = S390_MINIMAL_STACK_SIZE;
1282 sz->code_size = 0;
1283 sz->parm_size = 0;
1284 sz->local_size = 0;
1285
1286 /*----------------------------------------------------------*/
1287 /* We determine the size of the return code/stack in case we*/
1288 /* need to reserve a register to be used to address a stack */
1289 /* area that the callee will use. */
1290 /*----------------------------------------------------------*/
1291
1292 simpletype = mono_type_get_underlying_type (sig->ret)->type;
1293 enum_retvalue:
1294 switch (simpletype) {
1295 case MONO_TYPE_BOOLEAN:
1296 case MONO_TYPE_I1:
1297 case MONO_TYPE_U1:
1298 case MONO_TYPE_I2:
1299 case MONO_TYPE_U2:
1300 case MONO_TYPE_CHAR:
1301 case MONO_TYPE_I4:
1302 case MONO_TYPE_U4:
1303 case MONO_TYPE_I:
1304 case MONO_TYPE_U:
1305 case MONO_TYPE_CLASS:
1306 case MONO_TYPE_OBJECT:
1307 case MONO_TYPE_SZARRAY:
1308 case MONO_TYPE_ARRAY:
1309 case MONO_TYPE_PTR:
1310 case MONO_TYPE_FNPTR:
1311 case MONO_TYPE_STRING:
1312 cinfo->ret.reg = s390_r2;
1313 sz->code_size += 4;
1314 break;
1315 case MONO_TYPE_R4:
1316 case MONO_TYPE_R8:
1317 cinfo->ret.reg = s390_f0;
1318 sz->code_size += 4;
1319 break;
1320 case MONO_TYPE_I8:
1321 case MONO_TYPE_U8:
1322 cinfo->ret.reg = s390_r2;
1323 sz->code_size += 4;
1324 break;
1325 case MONO_TYPE_GENERICINST:
1326 if (!mono_type_generic_inst_is_valuetype (sig->ret)) {
1327 cinfo->ret.reg = s390_r2;
1328 sz->code_size += 4;
1329 break;
1330 }
1331 /* Fall through */
1332 case MONO_TYPE_VALUETYPE: {
1333 MonoClass *klass = mono_class_from_mono_type (sig->ret);
1334 if (sig->ret->data.klass->enumtype) {
1335 simpletype = sig->ret->data.klass->enum_basetype->type;
1336 goto enum_retvalue;
1337 }
1338 if (sig->pinvoke)
1339 size = mono_class_native_size (klass, &align);
1340 else
1341 size = mono_class_value_size (klass, &align);
1342
1343 cinfo->ret.reg = s390_r2;
1344 cinfo->struct_ret = 1;
1345 cinfo->ret.size = size;
1346 cinfo->ret.vtsize = size;
1347 gr++;
1348 break;
1349 }
1350 case MONO_TYPE_TYPEDBYREF:
1351 size = sizeof (MonoTypedRef);
1352 cinfo->ret.reg = s390_r2;
1353 cinfo->struct_ret = 1;
1354 cinfo->ret.size = size;
1355 cinfo->ret.vtsize = size;
1356 gr++;
1357 break;
1358 case MONO_TYPE_VOID:
1359 break;
1360 default:
1361 g_error ("Can't handle as return value 0x%x", sig->ret->type);
1362 }
1363
1364 if (sig->hasthis) {
1365 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1366 cinfo->args[nParm].size = sizeof(gpointer);
1367 nParm++;
1368 }
1369
1370 /*----------------------------------------------------------*/
1371 /* We determine the size of the parameter code and stack */
1372 /* requirements by checking the types and sizes of the */
1373 /* parameters. */
1374 /*----------------------------------------------------------*/
1375
1376 for (i = 0; i < sig->param_count; ++i) {
1377 /*--------------------------------------------------*/
1378 /* Handle vararg type calls. All args are put on */
1379 /* the stack. */
1380 /*--------------------------------------------------*/
1381 if ((sig->call_convention == MONO_CALL_VARARG) &&
1382 (i == sig->sentinelpos)) {
1383 gr = S390_LAST_ARG_REG + 1;
1384 add_general (&gr, sz, &cinfo->sigCookie, TRUE);
1385 }
1386
1387 if (sig->params [i]->byref) {
1388 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1389 cinfo->args[nParm].size = sizeof(gpointer);
1390 nParm++;
1391 continue;
1392 }
1393
1394 simpletype = mono_type_get_underlying_type(sig->params [i])->type;
1395 switch (simpletype) {
1396 case MONO_TYPE_BOOLEAN:
1397 case MONO_TYPE_I1:
1398 case MONO_TYPE_U1:
1399 cinfo->args[nParm].size = sizeof(char);
1400 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1401 nParm++;
1402 break;
1403 case MONO_TYPE_I2:
1404 case MONO_TYPE_U2:
1405 case MONO_TYPE_CHAR:
1406 cinfo->args[nParm].size = sizeof(short);
1407 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1408 nParm++;
1409 break;
1410 case MONO_TYPE_I4:
1411 case MONO_TYPE_U4:
1412 cinfo->args[nParm].size = sizeof(int);
1413 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1414 nParm++;
1415 break;
1416 case MONO_TYPE_I:
1417 case MONO_TYPE_U:
1418 case MONO_TYPE_PTR:
1419 case MONO_TYPE_FNPTR:
1420 case MONO_TYPE_CLASS:
1421 case MONO_TYPE_OBJECT:
1422 case MONO_TYPE_STRING:
1423 case MONO_TYPE_SZARRAY:
1424 case MONO_TYPE_ARRAY:
1425 cinfo->args[nParm].size = sizeof(gpointer);
1426 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1427 nParm++;
1428 break;
1429 case MONO_TYPE_I8:
1430 case MONO_TYPE_U8:
1431 cinfo->args[nParm].size = sizeof(long long);
1432 add_general (&gr, sz, cinfo->args+nParm, FALSE);
1433 nParm++;
1434 break;
1435 case MONO_TYPE_R4:
1436 cinfo->args[nParm].size = sizeof(float);
1437 add_float (&fr, sz, cinfo->args+nParm);
1438 nParm++;
1439 break;
1440 case MONO_TYPE_R8:
1441 cinfo->args[nParm].size = sizeof(double);
1442 add_float (&fr, sz, cinfo->args+nParm);
1443 nParm++;
1444 break;
1445 case MONO_TYPE_GENERICINST:
1446 if (!mono_type_generic_inst_is_valuetype (sig->params [i])) {
1447 cinfo->args[nParm].size = sizeof(gpointer);
1448 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1449 nParm++;
1450 break;
1451 }
1452 /* Fall through */
1453 case MONO_TYPE_VALUETYPE: {
1454 MonoMarshalType *info;
1455 MonoClass *klass = mono_class_from_mono_type (sig->params [i]);
1456 if (sig->pinvoke)
1457 size = mono_class_native_size (klass, &align);
1458 else
1459 size = mono_class_value_size (klass, &align);
1460
1461 info = mono_marshal_load_type_info (klass);
1462
1463 if ((info->native_size == sizeof(float)) &&
1464 (info->num_fields == 1) &&
1465 (info->fields[0].field->type->type == MONO_TYPE_R4)) {
1466 cinfo->args[nParm].size = sizeof(float);
1467 add_float(&fr, sz, cinfo->args+nParm);
1468 break;
1469 }
1470
1471 if ((info->native_size == sizeof(double)) &&
1472 (info->num_fields == 1) &&
1473 (info->fields[0].field->type->type == MONO_TYPE_R8)) {
1474 cinfo->args[nParm].size = sizeof(double);
1475 add_float(&fr, sz, cinfo->args+nParm);
1476 break;
1477 }
1478
1479 cinfo->args[nParm].vtsize = 0;
1480 cinfo->args[nParm].size = 0;
1481
1482 switch (size) {
1483 /*----------------------------------*/
1484 /* On S/390, structures of size 1, */
1485 /* 2, 4, and 8 bytes are passed in */
1486 /* (a) register(s). */
1487 /*----------------------------------*/
1488 case 0:
1489 case 1:
1490 case 2:
1491 case 4:
1492 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1493 cinfo->args[nParm].size = size;
1494 cinfo->args[nParm].regtype = RegTypeStructByVal;
1495 nParm++;
1496 sz->local_size += sizeof(long);
1497 break;
1498 case 8:
1499 add_general(&gr, sz, cinfo->args+nParm, FALSE);
1500 cinfo->args[nParm].size = sizeof(long long);
1501 cinfo->args[nParm].regtype = RegTypeStructByVal;
1502 nParm++;
1503 sz->local_size += sizeof(long);
1504 break;
1505 default:
1506 add_stackParm(&gr, sz, cinfo->args+nParm, size);
1507 nParm++;
1508 }
1509 }
1510 break;
1511 case MONO_TYPE_TYPEDBYREF: {
1512 int size = sizeof (MonoTypedRef);
1513
1514 cinfo->args[nParm].vtsize = 0;
1515 cinfo->args[nParm].size = 0;
1516
1517 switch (size) {
1518 /*----------------------------------*/
1519 /* On S/390, structures of size 1, */
1520 /* 2, 4, and 8 bytes are passed in */
1521 /* (a) register(s). */
1522 /*----------------------------------*/
1523 case 0:
1524 case 1:
1525 case 2:
1526 case 4:
1527 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1528 cinfo->args[nParm].size = size;
1529 cinfo->args[nParm].regtype = RegTypeStructByVal;
1530 nParm++;
1531 sz->local_size += sizeof(long);
1532 break;
1533 case 8:
1534 add_general(&gr, sz, cinfo->args+nParm, FALSE);
1535 cinfo->args[nParm].size = sizeof(long long);
1536 cinfo->args[nParm].regtype = RegTypeStructByVal;
1537 nParm++;
1538 sz->local_size += sizeof(long);
1539 break;
1540 default:
1541 add_stackParm(&gr, sz, cinfo->args+nParm, size);
1542 nParm++;
1543 }
1544 }
1545 break;
1546 default:
1547 g_error ("Can't trampoline 0x%x", sig->params [i]->type);
1548 }
1549 }
1550
1551 /*----------------------------------------------------------*/
1552 /* If we are passing a structure back then if it won't be */
1553 /* in a register(s) then we make room at the end of the */
1554 /* parameters that may have been placed on the stack */
1555 /*----------------------------------------------------------*/
1556 if (cinfo->struct_ret) {
1557 cinfo->ret.offset = sz->stack_size;
1558 switch (cinfo->ret.size) {
1559 case 0:
1560 case 1:
1561 case 2:
1562 case 4:
1563 case 8:
1564 break;
1565 default:
1566 sz->stack_size += S390_ALIGN(cinfo->ret.size, align);
1567 }
1568 }
1569
1570 /*----------------------------------------------------------*/
1571 /* Handle the case where there are no implicit arguments */
1572 /*----------------------------------------------------------*/
1573 if ((sig->call_convention == MONO_CALL_VARARG) &&
1574 (sig->param_count == sig->sentinelpos)) {
1575 gr = S390_LAST_ARG_REG + 1;
1576 add_general (&gr, sz, &cinfo->sigCookie, TRUE);
1577 }
1578
1579 cinfo->lastgr = gr;
1580 sz->stack_size = sz->stack_size + sz->local_size + sz->parm_size +
1581 sz->offset;
1582 sz->stack_size = S390_ALIGN(sz->stack_size, sizeof(long));
1583
1584 return (cinfo);
1585 }
1586
1587 /*========================= End of Function ========================*/
1588
1589 /*------------------------------------------------------------------*/
1590 /* */
1591 /* Name - mono_arch_allocate_vars */
1592 /* */
1593 /* Function - Set var information according to the calling */
1594 /* convention for S/390. The local var stuff should */
1595 /* most likely be split in another method. */
1596 /* */
1597 /* Parameter - @m - Compile unit. */
1598 /* */
1599 /*------------------------------------------------------------------*/
1600
1601 void
1602 mono_arch_allocate_vars (MonoCompile *cfg)
1603 {
1604 MonoMethodSignature *sig;
1605 MonoMethodHeader *header;
1606 MonoInst *inst;
1607 CallInfo *cinfo;
1608 size_data sz;
1609 int iParm, iVar, offset, size, align, curinst;
1610 int frame_reg = STK_BASE;
1611 int sArg, eArg;
1612
1613 header = mono_method_get_header (cfg->method);
1614
1615 cfg->flags |= MONO_CFG_HAS_SPILLUP;
1616
1617 /*---------------------------------------------------------*/
1618 /* We use the frame register also for any method that has */
1619 /* filter clauses. This way, when the handlers are called, */
1620 /* the code will reference local variables using the frame */
1621 /* reg instead of the stack pointer: if we had to restore */
1622 /* the stack pointer, we'd corrupt the method frames that */
1623 /* are already on the stack (since filters get called */
1624 /* before stack unwinding happens) when the filter code */
1625 /* would call any method. */
1626 /*---------------------------------------------------------*/
1627 if ((cfg->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1628 frame_reg = s390_r11;
1629
1630 cfg->frame_reg = frame_reg;
1631
1632 if (frame_reg != STK_BASE)
1633 cfg->used_int_regs |= 1 << frame_reg;
1634
1635 sig = mono_method_signature (cfg->method);
1636
1637 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1638
1639 if (cinfo->struct_ret) {
1640 cfg->ret->opcode = OP_REGVAR;
1641 cfg->ret->inst_c0 = s390_r2;
1642 } else {
1643 switch (mono_type_get_underlying_type (sig->ret)->type) {
1644 case MONO_TYPE_VOID:
1645 break;
1646 default:
1647 cfg->ret->opcode = OP_REGVAR;
1648 cfg->ret->dreg = s390_r2;
1649 break;
1650 }
1651 }
1652
1653 /*--------------------------------------------------------------*/
1654 /* local vars are at a positive offset from the stack pointer */
1655 /* also note that if the function uses alloca, we use s390_r11 */
1656 /* to point at the local variables. */
1657 /* add parameter area size for called functions */
1658 /*--------------------------------------------------------------*/
1659 offset = (cfg->param_area + S390_MINIMAL_STACK_SIZE);
1660 cfg->sig_cookie = 0;
1661
1662 if (cinfo->struct_ret) {
1663 inst = cfg->ret;
1664 offset = S390_ALIGN(offset, sizeof(gpointer));
1665 inst->inst_offset = offset;
1666 inst->opcode = OP_REGOFFSET;
1667 inst->inst_basereg = frame_reg;
1668 offset += sizeof(gpointer);
1669 if ((sig->call_convention == MONO_CALL_VARARG) &&
1670 (!retFitsInReg (cinfo->ret.size)))
1671 cfg->sig_cookie += cinfo->ret.size;
1672 }
1673
1674 if (sig->hasthis) {
1675 inst = cfg->varinfo [0];
1676 if (inst->opcode != OP_REGVAR) {
1677 inst->opcode = OP_REGOFFSET;
1678 inst->inst_basereg = frame_reg;
1679 offset = S390_ALIGN(offset, sizeof(gpointer));
1680 inst->inst_offset = offset;
1681 offset += sizeof (gpointer);
1682 }
1683 curinst = sArg = 1;
1684 } else {
1685 curinst = sArg = 0;
1686 }
1687
1688 eArg = sig->param_count + sArg;
1689
1690 if (sig->call_convention == MONO_CALL_VARARG)
1691 cfg->sig_cookie += S390_MINIMAL_STACK_SIZE;
1692
1693 for (iParm = sArg; iParm < eArg; ++iParm) {
1694 inst = cfg->varinfo [curinst];
1695 if (inst->opcode != OP_REGVAR) {
1696 switch (cinfo->args[iParm].regtype) {
1697 case RegTypeStructByAddr :
1698 if (cinfo->args[iParm].reg == STK_BASE) {
1699 inst->opcode = OP_S390_LOADARG;
1700 inst->inst_basereg = frame_reg;
1701 size = abs(cinfo->args[iParm].vtsize);
1702 offset = S390_ALIGN(offset, sizeof(long));
1703 inst->inst_offset = offset;
1704 inst->unused = cinfo->args[iParm].offset;
1705 } else {
1706 inst->opcode = OP_S390_ARGREG;
1707 inst->inst_basereg = frame_reg;
1708 size = sizeof(gpointer);
1709 offset = S390_ALIGN(offset, size);
1710 inst->inst_offset = offset;
1711 inst->unused = cinfo->args[iParm].offset;
1712 }
1713 break;
1714 case RegTypeStructByVal :
1715 inst->opcode = OP_S390_ARGPTR;
1716 inst->inst_basereg = frame_reg;
1717 size = cinfo->args[iParm].size;
1718 offset = S390_ALIGN(offset, size);
1719 inst->inst_offset = offset;
1720 inst->unused = cinfo->args[iParm].offset;
1721 break;
1722 default :
1723 if (cinfo->args[iParm].reg != STK_BASE) {
1724 inst->opcode = OP_REGOFFSET;
1725 inst->inst_basereg = frame_reg;
1726 size = (cinfo->args[iParm].size < 8
1727 ? sizeof(long)
1728 : sizeof(long long));
1729 offset = S390_ALIGN(offset, size);
1730 inst->inst_offset = offset;
1731 } else {
1732 inst->opcode = OP_S390_STKARG;
1733 inst->inst_basereg = frame_reg;
1734 size = (cinfo->args[iParm].size < 4
1735 ? 4 - cinfo->args[iParm].size
1736 : 0);
1737 inst->inst_offset = cinfo->args[iParm].offset +
1738 size;
1739 inst->unused = 0;
1740 size = sizeof(long);
1741 }
1742 }
1743 if ((sig->call_convention == MONO_CALL_VARARG) &&
1744 (cinfo->args[iParm].regtype != RegTypeGeneral) &&
1745 (iParm < sig->sentinelpos))
1746 cfg->sig_cookie += size;
1747
1748 offset += size;
1749 }
1750 curinst++;
1751 }
1752
1753 curinst = cfg->locals_start;
1754 for (iVar = curinst; iVar < cfg->num_varinfo; ++iVar) {
1755 inst = cfg->varinfo [iVar];
1756 if ((inst->flags & MONO_INST_IS_DEAD) ||
1757 (inst->opcode == OP_REGVAR))
1758 continue;
1759
1760 /*--------------------------------------------------*/
1761 /* inst->unused indicates native sized value types, */
1762 /* this is used by the pinvoke wrappers when they */
1763 /* call functions returning structure */
1764 /*--------------------------------------------------*/
1765 if (inst->unused && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1766 size = mono_class_native_size (mono_class_from_mono_type(inst->inst_vtype), &align);
1767 else
1768 size = mono_type_size (inst->inst_vtype, &align);
1769
1770 offset = S390_ALIGN(offset, align);
1771 inst->inst_offset = offset;
1772 inst->opcode = OP_REGOFFSET;
1773 inst->inst_basereg = frame_reg;
1774 offset += size;
1775 DEBUG (g_print("allocating local %d to %ld\n", iVar, inst->inst_offset));
1776 }
1777
1778 /*------------------------------------------------------*/
1779 /* Allow space for the trace method stack area if needed*/
1780 /*------------------------------------------------------*/
1781 if (mono_jit_trace_calls != NULL && mono_trace_eval (cfg->method)) {
1782 offset += S390_TRACE_STACK_SIZE;
1783 }
1784
1785 /*------------------------------------------------------*/
1786 /* Reserve space to save LMF and caller saved registers */
1787 /*------------------------------------------------------*/
1788 if (cfg->method->save_lmf)
1789 offset += sizeof (MonoLMF);
1790
1791 /*------------------------------------------------------*/
1792 /* align the offset */
1793 /*------------------------------------------------------*/
1794 cfg->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1795
1796 }
1797
1798 /*========================= End of Function ========================*/
1799
1800 /*------------------------------------------------------------------*/
1801 /* */
1802 /* Name - mono_arch_call_opcode */
1803 /* */
1804 /* Function - Take the arguments and generate the arch-specific */
1805 /* instructions to properly call the function. This */
1806 /* includes pushing, moving argments to the correct */
1807 /* etc. */
1808 /* */
1809 /*------------------------------------------------------------------*/
1810
1811 MonoCallInst*
1812 mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb,
1813 MonoCallInst *call, int is_virtual) {
1814 MonoInst *in;
1815 MonoCallArgParm *arg;
1816 MonoMethodSignature *sig;
1817 int i, n, lParamArea;
1818 CallInfo *cinfo;
1819 ArgInfo *ainfo;
1820 size_data sz;
1821 int stackSize;
1822
1823 sig = call->signature;
1824 n = sig->param_count + sig->hasthis;
1825 DEBUG (g_print ("Call requires: %d parameters\n",n));
1826
1827 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1828
1829 stackSize = sz.stack_size + sz.local_size + sz.parm_size + sz.offset;
1830 call->stack_usage = MAX(stackSize, call->stack_usage);
1831 lParamArea = MAX((call->stack_usage-S390_MINIMAL_STACK_SIZE-sz.parm_size), 0);
1832 cfg->param_area = MAX(((signed) cfg->param_area), lParamArea);
1833 cfg->flags |= MONO_CFG_HAS_CALLS;
1834
1835 if (cinfo->struct_ret)
1836 call->used_iregs |= 1 << cinfo->ret.reg;
1837
1838 for (i = 0; i < n; ++i) {
1839 ainfo = cinfo->args + i;
1840
1841 if ((sig->call_convention == MONO_CALL_VARARG) &&
1842 (i == sig->sentinelpos)) {
1843 emit_sig_cookie (cfg, call, cinfo, ainfo->size);
1844 }
1845
1846 if (is_virtual && i == 0) {
1847 /* the argument will be attached to the call instrucion */
1848 in = call->args [i];
1849 call->used_iregs |= 1 << ainfo->reg;
1850 } else {
1851 MONO_INST_NEW_CALL_ARG (cfg, arg, OP_OUTARG);
1852 in = call->args [i];
1853 arg->ins.cil_code = in->cil_code;
1854 arg->ins.inst_left = in;
1855 arg->ins.type = in->type;
1856 /* prepend, we'll need to reverse them later */
1857 arg->ins.next = call->out_args;
1858 call->out_args = (MonoInst *) arg;
1859 arg->ins.inst_right = (MonoInst *) call;
1860 if (ainfo->regtype == RegTypeGeneral) {
1861 arg->ins.unused = ainfo->reg;
1862 call->used_iregs |= 1 << ainfo->reg;
1863 if (arg->ins.type == STACK_I8)
1864 call->used_iregs |= 1 << (ainfo->reg + 1);
1865 } else if (ainfo->regtype == RegTypeStructByAddr) {
1866 call->used_iregs |= 1 << ainfo->reg;
1867 arg->ins.sreg1 = ainfo->reg;
1868 arg->ins.opcode = OP_OUTARG_VT;
1869 arg->size = -ainfo->vtsize;
1870 arg->offset = ainfo->offset;
1871 arg->offPrm = ainfo->offparm + sz.offStruct;
1872 } else if (ainfo->regtype == RegTypeStructByVal) {
1873 if (ainfo->reg != STK_BASE) {
1874 switch (ainfo->size) {
1875 case 0:
1876 case 1:
1877 case 2:
1878 case 4:
1879 call->used_iregs |= 1 << ainfo->reg;
1880 break;
1881 case 8:
1882 call->used_iregs |= 1 << ainfo->reg;
1883 call->used_iregs |= 1 << (ainfo->reg+1);
1884 break;
1885 default:
1886 call->used_iregs |= 1 << ainfo->reg;
1887 }
1888 }
1889 arg->ins.sreg1 = ainfo->reg;
1890 arg->ins.opcode = OP_OUTARG_VT;
1891 arg->size = ainfo->size;
1892 arg->offset = ainfo->offset;
1893 arg->offPrm = ainfo->offparm + sz.offStruct;
1894 } else if (ainfo->regtype == RegTypeBase) {
1895 arg->ins.opcode = OP_OUTARG_MEMBASE;
1896 arg->ins.sreg1 = ainfo->reg;
1897 arg->size = ainfo->size;
1898 arg->offset = ainfo->offset;
1899 call->used_iregs |= 1 << ainfo->reg;
1900 } else if (ainfo->regtype == RegTypeFP) {
1901 arg->ins.unused = ainfo->reg;
1902 call->used_fregs |= 1 << ainfo->reg;
1903 if (ainfo->size == 4)
1904 arg->ins.opcode = OP_OUTARG_R4;
1905 else
1906 arg->ins.opcode = OP_OUTARG_R8;
1907 } else {
1908 g_assert_not_reached ();
1909 }
1910 }
1911 }
1912
1913 /*
1914 * Handle the case where there are no implicit arguments
1915 */
1916 if ((sig->call_convention == MONO_CALL_VARARG) &&
1917 (i == sig->sentinelpos)) {
1918 emit_sig_cookie (cfg, call, cinfo, ainfo->size);
1919 }
1920
1921 /*
1922 * Reverse the call->out_args list.
1923 */
1924 {
1925 MonoInst *prev = NULL, *list = call->out_args, *next;
1926 while (list) {
1927 next = list->next;
1928 list->next = prev;
1929 prev = list;
1930 list = next;
1931 }
1932 call->out_args = prev;
1933 }
1934
1935 g_free (cinfo);
1936 return call;
1937 }
1938
1939 /*========================= End of Function ========================*/
1940
1941 /*------------------------------------------------------------------*/
1942 /* */
1943 /* Name - emit_sig_cookie. */
1944 /* */
1945 /* Function - For variable length parameter lists construct a */
1946 /* signature cookie and emit it. */
1947 /* */
1948 /*------------------------------------------------------------------*/
1949
1950 static void
1951 emit_sig_cookie (MonoCompile *cfg, MonoCallInst *call,
1952 CallInfo *cinfo, int argSize)
1953 {
1954 MonoCallArgParm *arg;
1955 MonoMethodSignature *tmpSig;
1956 MonoInst *sigArg;
1957
1958 cfg->disable_aot = TRUE;
1959
1960 /*----------------------------------------------------------*/
1961 /* mono_ArgIterator_Setup assumes the signature cookie is */
1962 /* passed first and all the arguments which were before it */
1963 /* passed on the stack after the signature. So compensate */
1964 /* by passing a different signature. */
1965 /*----------------------------------------------------------*/
1966 tmpSig = mono_metadata_signature_dup (call->signature);
1967 tmpSig->param_count -= call->signature->sentinelpos;
1968 tmpSig->sentinelpos = 0;
1969 if (tmpSig->param_count > 0)
1970 memcpy (tmpSig->params,
1971 call->signature->params + call->signature->sentinelpos,
1972 tmpSig->param_count * sizeof(MonoType *));
1973
1974 MONO_INST_NEW (cfg, sigArg, OP_ICONST);
1975 sigArg->inst_p0 = tmpSig;
1976
1977 MONO_INST_NEW_CALL_ARG (cfg, arg, OP_OUTARG_MEMBASE);
1978 arg->ins.inst_left = sigArg;
1979 arg->ins.inst_right = (MonoInst *) call;
1980 arg->size = argSize;
1981 arg->offset = cinfo->sigCookie.offset;
1982 arg->ins.next = call->out_args;
1983 call->out_args = (MonoInst *) arg;
1984 }
1985
1986 /*========================= End of Function ========================*/
1987
1988 /*------------------------------------------------------------------*/
1989 /* */
1990 /* Name - mono_arch_instrument_mem_needs */
1991 /* */
1992 /* Function - Allow tracing to work with this interface (with */
1993 /* an optional argument). */
1994 /* */
1995 /*------------------------------------------------------------------*/
1996
1997 void
1998 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
1999 {
2000 /* no stack room needed now (may be needed for FASTCALL-trace support) */
2001 *stack = 0;
2002 /* split prolog-epilog requirements? */
2003 *code = 50; /* max bytes needed: check this number */
2004 }
2005
2006 /*========================= End of Function ========================*/
2007
2008 /*------------------------------------------------------------------*/
2009 /* */
2010 /* Name - mono_arch_instrument_prolog */
2011 /* */
2012 /* Function - Create an "instrumented" prolog. */
2013 /* */
2014 /*------------------------------------------------------------------*/
2015
2016 void*
2017 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
2018 gboolean enable_arguments)
2019 {
2020 guchar *code = p;
2021 int parmOffset,
2022 fpOffset,
2023 baseReg;
2024
2025 parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
2026 if (cfg->method->save_lmf)
2027 parmOffset -= sizeof(MonoLMF);
2028 fpOffset = parmOffset + (5*sizeof(gint32));
2029 if (fpOffset > 4096) {
2030 s390_lr (code, s390_r12, STK_BASE);
2031 baseReg = s390_r12;
2032 while (fpOffset > 4096) {
2033 s390_ahi (code, baseReg, 4096);
2034 fpOffset -= 4096;
2035 parmOffset -= 4096;
2036 }
2037 } else {
2038 baseReg = STK_BASE;
2039 }
2040
2041 s390_stm (code, s390_r2, s390_r6, baseReg, parmOffset);
2042 s390_std (code, s390_f0, 0, baseReg, fpOffset);
2043 s390_std (code, s390_f1, 0, baseReg, fpOffset+sizeof(gdouble));
2044 s390_std (code, s390_f2, 0, baseReg, fpOffset+2*sizeof(gdouble));
2045 s390_basr (code, s390_r13, 0);
2046 s390_j (code, 6);
2047 s390_word (code, cfg->method);
2048 s390_word (code, func);
2049 s390_l (code, s390_r2, 0, s390_r13, 4);
2050 s390_la (code, s390_r3, 0, baseReg, parmOffset);
2051 s390_lr (code, s390_r4, STK_BASE);
2052 s390_ahi (code, s390_r4, cfg->stack_usage);
2053 s390_l (code, s390_r1, 0, s390_r13, 8);
2054 s390_basr (code, s390_r14, s390_r1);
2055 s390_ld (code, s390_f2, 0, baseReg, fpOffset+2*sizeof(gdouble));
2056 s390_ld (code, s390_f1, 0, baseReg, fpOffset+sizeof(gdouble));
2057 s390_ld (code, s390_f0, 0, baseReg, fpOffset);
2058 s390_lm (code, s390_r2, s390_r6, baseReg, parmOffset);
2059
2060 return code;
2061 }
2062
2063 /*========================= End of Function ========================*/
2064
2065 /*------------------------------------------------------------------*/
2066 /* */
2067 /* Name - mono_arch_instrument_epilog */
2068 /* */
2069 /* Function - Create an epilog that will handle the returned */
2070 /* values used in instrumentation. */
2071 /* */
2072 /*------------------------------------------------------------------*/
2073
2074 void*
2075 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
2076 {
2077 guchar *code = p;
2078 int save_mode = SAVE_NONE,
2079 saveOffset;
2080 MonoMethod *method = cfg->method;
2081 int rtype = mono_type_get_underlying_type (mono_method_signature (method)->ret)->type;
2082
2083 saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
2084 if (method->save_lmf)
2085 saveOffset -= sizeof(MonoLMF);
2086
2087 handle_enum:
2088 switch (rtype) {
2089 case MONO_TYPE_VOID:
2090 /* special case string .ctor icall */
2091 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
2092 save_mode = SAVE_ONE;
2093 else
2094 save_mode = SAVE_NONE;
2095 break;
2096 case MONO_TYPE_I8:
2097 case MONO_TYPE_U8:
2098 save_mode = SAVE_TWO;
2099 break;
2100 case MONO_TYPE_R4:
2101 save_mode = SAVE_R4;
2102 break;
2103 case MONO_TYPE_R8:
2104 save_mode = SAVE_R8;
2105 break;
2106 case MONO_TYPE_VALUETYPE:
2107 if (mono_method_signature (method)->ret->data.klass->enumtype) {
2108 rtype = mono_method_signature (method)->ret->data.klass->enum_basetype->type;
2109 goto handle_enum;
2110 }
2111 save_mode = SAVE_STRUCT;
2112 break;
2113 default:
2114 save_mode = SAVE_ONE;
2115 break;
2116 }
2117
2118 switch (save_mode) {
2119 case SAVE_TWO:
2120 s390_stm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
2121 if (enable_arguments) {
2122 s390_lr (code, s390_r4, s390_r3);
2123 s390_lr (code, s390_r3, s390_r2);
2124 }
2125 break;
2126 case SAVE_ONE:
2127 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2128 if (enable_arguments) {
2129 s390_lr (code, s390_r3, s390_r2);
2130 }
2131 break;
2132 case SAVE_R4:
2133 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2134 if (enable_arguments) {
2135 s390_ldebr (code, s390_f0, s390_f0);
2136 }
2137 break;
2138 case SAVE_R8:
2139 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2140 break;
2141 case SAVE_STRUCT:
2142 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2143 if (enable_arguments) {
2144 s390_l (code, s390_r3, 0, cfg->frame_reg,
2145 S390_MINIMAL_STACK_SIZE+cfg->param_area);
2146 }
2147 break;
2148 case SAVE_NONE:
2149 default:
2150 break;
2151 }
2152
2153 s390_basr (code, s390_r13, 0);
2154 s390_j (code, 6);
2155 s390_word (code, cfg->method);
2156 s390_word (code, func);
2157 s390_l (code, s390_r2, 0, s390_r13, 4);
2158 s390_l (code, s390_r1, 0, s390_r13, 8);
2159 s390_basr (code, s390_r14, s390_r1);
2160
2161 switch (save_mode) {
2162 case SAVE_TWO:
2163 s390_lm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
2164 break;
2165 case SAVE_ONE:
2166 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2167 break;
2168 case SAVE_R4:
2169 case SAVE_R8:
2170 s390_ld (code, s390_f0, 0, cfg->frame_reg, saveOffset);
2171 break;
2172 case SAVE_STRUCT:
2173 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
2174 break;
2175 case SAVE_NONE:
2176 default:
2177 break;
2178 }
2179
2180 return code;
2181 }
2182
2183 /*========================= End of Function ========================*/
2184
2185 /*------------------------------------------------------------------*/
2186 /* */
2187 /* Name - peephole_pass */
2188 /* */
2189 /* Function - Form a peephole pass at the code looking for */
2190 /* simple optimizations. */
2191 /* */
2192 /*------------------------------------------------------------------*/
2193
2194 static void
2195 peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
2196 {
2197 MonoInst *ins, *last_ins = NULL;
2198 ins = bb->code;
2199
2200 while (ins) {
2201
2202 switch (ins->opcode) {
2203 case OP_MUL_IMM:
2204 /* remove unnecessary multiplication with 1 */
2205 if (ins->inst_imm == 1) {
2206 if (ins->dreg != ins->sreg1) {
2207 ins->opcode = OP_MOVE;
2208 } else {
2209 last_ins->next = ins->next;
2210 ins = ins->next;
2211 continue;
2212 }
2213 }
2214 break;
2215 case OP_LOAD_MEMBASE:
2216 case OP_LOADI4_MEMBASE:
2217 /*
2218 * OP_STORE_MEMBASE_REG reg, offset(basereg)
2219 * OP_LOAD_MEMBASE offset(basereg), reg
2220 */
2221 if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG
2222 || last_ins->opcode == OP_STORE_MEMBASE_REG) &&
2223 ins->inst_basereg == last_ins->inst_destbasereg &&
2224 ins->inst_offset == last_ins->inst_offset) {
2225 if (ins->dreg == last_ins->sreg1) {
2226 last_ins->next = ins->next;
2227 ins = ins->next;
2228 continue;
2229 } else {
2230 ins->opcode = OP_MOVE;
2231 ins->sreg1 = last_ins->sreg1;
2232 }
2233
2234 /*
2235 * Note: reg1 must be different from the basereg in the second load
2236 * OP_LOAD_MEMBASE offset(basereg), reg1
2237 * OP_LOAD_MEMBASE offset(basereg), reg2
2238 * -->
2239 * OP_LOAD_MEMBASE offset(basereg), reg1
2240 * OP_MOVE reg1, reg2
2241 */
2242 } if (last_ins && (last_ins->opcode == OP_LOADI4_MEMBASE
2243 || last_ins->opcode == OP_LOAD_MEMBASE) &&
2244 ins->inst_basereg != last_ins->dreg &&
2245 ins->inst_basereg == last_ins->inst_basereg &&
2246 ins->inst_offset == last_ins->inst_offset) {
2247
2248 if (ins->dreg == last_ins->dreg) {
2249 last_ins->next = ins->next;
2250 ins = ins->next;
2251 continue;
2252 } else {
2253 ins->opcode = OP_MOVE;
2254 ins->sreg1 = last_ins->dreg;
2255 }
2256
2257 //g_assert_not_reached ();
2258
2259 #if 0
2260 /*
2261 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
2262 * OP_LOAD_MEMBASE offset(basereg), reg
2263 * -->
2264 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
2265 * OP_ICONST reg, imm
2266 */
2267 } else if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_IMM
2268 || last_ins->opcode == OP_STORE_MEMBASE_IMM) &&
2269 ins->inst_basereg == last_ins->inst_destbasereg &&
2270 ins->inst_offset == last_ins->inst_offset) {
2271 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
2272 ins->opcode = OP_ICONST;
2273 ins->inst_c0 = last_ins->inst_imm;
2274 g_assert_not_reached (); // check this rule
2275 #endif
2276 }
2277 break;
2278 case OP_LOADU1_MEMBASE:
2279 case OP_LOADI1_MEMBASE:
2280 if (last_ins && (last_ins->opcode == OP_STOREI1_MEMBASE_REG) &&
2281 ins->inst_basereg == last_ins->inst_destbasereg &&
2282 ins->inst_offset == last_ins->inst_offset) {
2283 if (ins->dreg == last_ins->sreg1) {
2284 last_ins->next = ins->next;
2285 ins = ins->next;
2286 continue;
2287 } else {
2288 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
2289 ins->opcode = OP_MOVE;
2290 ins->sreg1 = last_ins->sreg1;
2291 }
2292 }
2293 break;
2294 case OP_LOADU2_MEMBASE:
2295 case OP_LOADI2_MEMBASE:
2296 if (last_ins && (last_ins->opcode == OP_STOREI2_MEMBASE_REG) &&
2297 ins->inst_basereg == last_ins->inst_destbasereg &&
2298 ins->inst_offset == last_ins->inst_offset) {
2299 if (ins->dreg == last_ins->sreg1) {
2300 last_ins->next = ins->next;
2301 ins = ins->next;
2302 continue;
2303 } else {
2304 ins->opcode = OP_MOVE;
2305 ins->sreg1 = last_ins->sreg1;
2306 }
2307 }
2308 break;
2309 case CEE_CONV_I4:
2310 case CEE_CONV_U4:
2311 case OP_MOVE:
2312 /*
2313 * OP_MOVE reg, reg
2314 */
2315 if (ins->dreg == ins->sreg1) {
2316 if (last_ins)
2317 last_ins->next = ins->next;
2318 ins = ins->next;
2319 continue;
2320 }
2321 /*
2322 * OP_MOVE sreg, dreg
2323 * OP_MOVE dreg, sreg
2324 */
2325 if (last_ins && last_ins->opcode == OP_MOVE &&
2326 ins->sreg1 == last_ins->dreg &&
2327 ins->dreg == last_ins->sreg1) {
2328 last_ins->next = ins->next;
2329 ins = ins->next;
2330 continue;
2331 }
2332 break;
2333 }
2334 last_ins = ins;
2335 ins = ins->next;
2336 }
2337 bb->last_ins = last_ins;
2338 }
2339
2340 /*========================= End of Function ========================*/
2341
2342 /*------------------------------------------------------------------*/
2343 /* */
2344 /* Name - mono_arch_local_regalloc. */
2345 /* */
2346 /* Function - We first scan the list of instructions and we */
2347 /* save the liveness information of each register */
2348 /* (when the register is first used, when its value */
2349 /* is set etc.). We also reverse the list of instr- */
2350 /* uctions (in the InstList list) because assigning */
2351 /* registers backwards allows for more tricks to be */
2352 /* used. */
2353 /* */
2354 /*------------------------------------------------------------------*/
2355
2356 void
2357 mono_arch_local_regalloc (MonoCompile *cfg, MonoBasicBlock *bb)
2358 {
2359 mono_local_regalloc(cfg, bb);
2360 }
2361
2362 /*========================= End of Function ========================*/
2363
2364 /*------------------------------------------------------------------*/
2365 /* */
2366 /* Name - emit_float_to_int */
2367 /* */
2368 /* Function - Create instructions which will convert a floating */
2369 /* point value to integer. */
2370 /* */
2371 /*------------------------------------------------------------------*/
2372
2373 static guchar*
2374 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2375 {
2376 /* sreg is a float, dreg is an integer reg. */
2377 if (is_signed) {
2378 s390_cfdbr (code, dreg, 5, sreg);
2379 switch (size) {
2380 case 1:
2381 s390_lhi (code, s390_r0, 0);
2382 s390_lhi (code, s390_r13, 0xff);
2383 s390_ltr (code, dreg, dreg);
2384 s390_jnl (code, 4);
2385 s390_lhi (code, s390_r0, 0x80);
2386 s390_nr (code, dreg, s390_r13);
2387 s390_or (code, dreg, s390_r0);
2388 break;
2389 }
2390 } else {
2391 short *o[1];
2392 s390_basr (code, s390_r13, 0);
2393 s390_j (code, 10);
2394 s390_llong (code, 0x41e0000000000000);
2395 s390_llong (code, 0x41f0000000000000);
2396 s390_ldr (code, s390_f15, sreg);
2397 s390_cdb (code, s390_f15, 0, s390_r13, 4);
2398 s390_jl (code, 0); CODEPTR(code, o[0]);
2399 s390_sdb (code, s390_f15, 0, s390_r13, 12);
2400 s390_cfdbr (code, dreg, 7, s390_f15);
2401 s390_j (code, 4);
2402 PTRSLOT(code, o[0]);
2403 s390_cfdbr (code, dreg, 5, sreg);
2404 switch (size) {
2405 case 1:
2406 s390_lhi (code, s390_r0, 0xff);
2407 s390_nr (code, dreg, s390_r0);
2408 break;
2409 case 2:
2410 s390_lhi (code, s390_r0, -1);
2411 s390_srl (code, s390_r0, 0, 16);
2412 s390_nr (code, dreg, s390_r0);
2413 break;
2414 }
2415 }
2416 return code;
2417 }
2418
2419 /*========================= End of Function ========================*/
2420
2421 /*------------------------------------------------------------------*/
2422 /* */
2423 /* Name - mono_arch_output_basic_block */
2424 /* */
2425 /* Function - Perform the "real" work of emitting instructions */
2426 /* that will do the work of in the basic block. */
2427 /* */
2428 /*------------------------------------------------------------------*/
2429
2430 void
2431 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
2432 {
2433 MonoInst *ins;
2434 MonoCallInst *call;
2435 guint offset;
2436 guint8 *code = cfg->native_code + cfg->code_len;
2437 MonoInst *last_ins = NULL;
2438 guint last_offset = 0;
2439 int max_len, cpos, src2;
2440
2441 if (cfg->opt & MONO_OPT_PEEPHOLE)
2442 peephole_pass (cfg, bb);
2443
2444 /* we don't align basic blocks of loops on s390 */
2445
2446 if (cfg->verbose_level > 2)
2447 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
2448
2449 cpos = bb->max_offset;
2450
2451 if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
2452 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
2453 //g_assert (!mono_compile_aot);
2454 //cpos += 6;
2455 //if (bb->cil_code)
2456 // cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
2457 /* this is not thread save, but good enough */
2458 /* fixme: howto handle overflows? */
2459 //x86_inc_mem (code, &cov->data [bb->dfn].count);
2460 }
2461
2462 ins = bb->code;
2463 while (ins) {
2464 offset = code - cfg->native_code;
2465
2466 max_len = ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
2467
2468 if (offset > (cfg->code_size - max_len - 16)) {
2469 cfg->code_size *= 2;
2470 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
2471 code = cfg->native_code + offset;
2472 }
2473
2474 mono_debug_record_line_number (cfg, ins, offset);
2475
2476 switch (ins->opcode) {
2477 case OP_STOREI1_MEMBASE_IMM: {
2478 s390_lhi (code, s390_r0, ins->inst_imm);
2479 if (s390_is_uimm12(ins->inst_offset))
2480 s390_stc (code, s390_r0, 0, ins->inst_destbasereg, ins->inst_offset);
2481 else {
2482 s390_basr (code, s390_r13, 0);
2483 s390_j (code, 4);
2484 s390_word (code, ins->inst_offset);
2485 s390_l (code, s390_r13, 0, s390_r13, 4);
2486 s390_stc (code, s390_r0, s390_r13, ins->inst_destbasereg, 0);
2487 }
2488 }
2489 break;
2490 case OP_STOREI2_MEMBASE_IMM: {
2491 s390_lhi (code, s390_r0, ins->inst_imm);
2492 if (s390_is_uimm12(ins->inst_offset)) {
2493 s390_sth (code, s390_r0, 0, ins->inst_destbasereg, ins->inst_offset);
2494 } else {
2495 s390_basr (code, s390_r13, 0);
2496 s390_j (code, 4);
2497 s390_word (code, ins->inst_offset);
2498 s390_l (code, s390_r13, 0, s390_r13, 4);
2499 s390_sth (code, s390_r0, s390_r13, ins->inst_destbasereg, 0);
2500 }
2501 }
2502 break;
2503 case OP_STORE_MEMBASE_IMM:
2504 case OP_STOREI4_MEMBASE_IMM: {
2505 if (s390_is_imm16(ins->inst_imm)) {
2506 s390_lhi (code, s390_r0, ins->inst_imm);
2507 } else {
2508 s390_basr (code, s390_r13, 0);
2509 s390_j (code, 4);
2510 s390_word (code, ins->inst_imm);
2511 s390_l (code, s390_r0, 0, s390_r13, 4);
2512 }
2513 if (s390_is_uimm12(ins->inst_offset)) {
2514 s390_st (code, s390_r0, 0, ins->inst_destbasereg, ins->inst_offset);
2515 } else {
2516 s390_basr (code, s390_r13, 0);
2517 s390_j (code, 4);
2518 s390_word (code, ins->inst_offset);
2519 s390_l (code, s390_r13, 0, s390_r13, 4);
2520 s390_st (code, s390_r0, s390_r13, ins->inst_destbasereg, 0);
2521 }
2522 }
2523 break;
2524 case OP_STOREI1_MEMBASE_REG: {
2525 if (s390_is_uimm12(ins->inst_offset)) {
2526 s390_stc (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2527 } else {
2528 s390_basr (code, s390_r13, 0);
2529 s390_j (code, 4);
2530 s390_word (code, ins->inst_offset);
2531 s390_l (code, s390_r13, 0, s390_r13, 4);
2532 s390_stc (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2533 }
2534 }
2535 break;
2536 case OP_STOREI2_MEMBASE_REG: {
2537 if (s390_is_uimm12(ins->inst_offset)) {
2538 s390_sth (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2539 } else {
2540 s390_basr (code, s390_r13, 0);
2541 s390_j (code, 4);
2542 s390_word (code, ins->inst_offset);
2543 s390_l (code, s390_r13, 0, s390_r13, 4);
2544 s390_sth (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2545 }
2546 }
2547 break;
2548 case OP_STORE_MEMBASE_REG:
2549 case OP_STOREI4_MEMBASE_REG: {
2550 if (s390_is_uimm12(ins->inst_offset)) {
2551 s390_st (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2552 } else {
2553 s390_basr (code, s390_r13, 0);
2554 s390_j (code, 4);
2555 s390_word (code, ins->inst_offset);
2556 s390_l (code, s390_r13, 0, s390_r13, 4);
2557 s390_st (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2558 }
2559 }
2560 break;
2561 case CEE_LDIND_I:
2562 case CEE_LDIND_I4:
2563 case CEE_LDIND_U4: {
2564 s390_basr (code, s390_r13, 0);
2565 s390_j (code, 4);
2566 s390_word (code, ins->inst_p0);
2567 s390_l (code, s390_r13, 0, s390_r13, 4);
2568 s390_l (code, ins->dreg, 0, s390_r13, 0);
2569 }
2570 break;
2571 case OP_LOADU4_MEM:
2572 g_assert_not_reached ();
2573 break;
2574 case OP_LOAD_MEMBASE:
2575 case OP_LOADI4_MEMBASE:
2576 case OP_LOADU4_MEMBASE: {
2577 if (s390_is_uimm12(ins->inst_offset))
2578 s390_l (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
2579 else {
2580 if (s390_is_imm16(ins->inst_offset)) {
2581 s390_lhi (code, s390_r13, ins->inst_offset);
2582 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
2583 } else {
2584 s390_basr (code, s390_r13, 0);
2585 s390_j (code, 4);
2586 s390_word (code, ins->inst_offset);
2587 s390_l (code, s390_r13, 0, s390_r13, 4);
2588 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
2589 }
2590 }
2591 }
2592 break;
2593 case OP_LOADU1_MEMBASE: {
2594 s390_lhi (code, s390_r0, 0);
2595 if (s390_is_uimm12(ins->inst_offset))
2596 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
2597 else {
2598 s390_basr (code, s390_r13, 0);
2599 s390_j (code, 4);
2600 s390_word (code, ins->inst_offset);
2601 s390_l (code, s390_r13, 0, s390_r13, 4);
2602 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
2603 }
2604 s390_lr (code, ins->dreg, s390_r0);
2605 }
2606 break;
2607 case OP_LOADI1_MEMBASE: {
2608 s390_lhi (code, s390_r0, 0);
2609 if (s390_is_uimm12(ins->inst_offset))
2610 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
2611 else {
2612 s390_basr (code, s390_r13, 0);
2613 s390_j (code, 4);
2614 s390_word (code, ins->inst_offset);
2615 s390_l (code, s390_r13, 0, s390_r13, 4);
2616 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
2617 }
2618 s390_lhi (code, s390_r13, 0x80);
2619 s390_nr (code, s390_r13, s390_r0);
2620 s390_jz (code, 5);
2621 s390_lhi (code, s390_r13, 0xff00);
2622 s390_or (code, s390_r0, s390_r13);
2623 s390_lr (code, ins->dreg, s390_r0);
2624 }
2625 break;
2626 case OP_LOADU2_MEMBASE: {
2627 s390_lhi (code, s390_r0, 0);
2628 if (s390_is_uimm12(ins->inst_offset))
2629 s390_icm (code, s390_r0, 3, ins->inst_basereg, ins->inst_offset);
2630 else {
2631 s390_basr (code, s390_r13, 0);
2632 s390_j (code, 4);
2633 s390_word (code, ins->inst_offset);
2634 s390_l (code, s390_r13, 0, s390_r13, 4);
2635 s390_ar (code, s390_r13, ins->inst_basereg);
2636 s390_icm (code, s390_r0, 3, s390_r13, 0);
2637 }
2638 s390_lr (code, ins->dreg, s390_r0);
2639 }
2640 break;
2641 case OP_LOADI2_MEMBASE: {
2642 s390_lhi (code, s390_r0, 0);
2643 if (s390_is_uimm12(ins->inst_offset))
2644 s390_lh (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
2645 else {
2646 s390_basr (code, s390_r13, 0);
2647 s390_j (code, 4);
2648 s390_word (code, ins->inst_offset);
2649 s390_l (code, s390_r13, 0, s390_r13, 4);
2650 s390_lh (code, s390_r0, s390_r13, ins->inst_basereg, 0);
2651 }
2652 s390_lr (code, ins->dreg, s390_r0);
2653 }
2654 break;
2655 case CEE_CONV_I1: {
2656 s390_lhi (code, s390_r0, 0x80);
2657 if (ins->dreg != ins->sreg1) {
2658 s390_lr (code, ins->dreg, ins->sreg1);
2659 }
2660 s390_nr (code, s390_r0, ins->sreg1);
2661 s390_jz (code, 7);
2662 s390_lhi (code, s390_r13, -1);
2663 s390_sll (code, s390_r13, 0, 8);
2664 s390_or (code, ins->dreg, s390_r13);
2665 }
2666 break;
2667 case CEE_CONV_I2: {
2668 s390_lhi (code, s390_r0, 0x80);
2669 s390_sll (code, s390_r0, 0, 8);
2670 if (ins->dreg != ins->sreg1) {
2671 s390_lr (code, ins->dreg, ins->sreg1);
2672 }
2673 s390_nr (code, s390_r0, ins->sreg1);
2674 s390_jz (code, 7);
2675 s390_lhi (code, s390_r13, -1);
2676 s390_sll (code, s390_r13, 0, 16);
2677 s390_or (code, ins->dreg, s390_r13);
2678 }
2679 break;
2680 case CEE_CONV_U1: {
2681 s390_lhi (code, s390_r0, 0xff);
2682 if (ins->dreg != ins->sreg1) {
2683 s390_lr (code, ins->dreg, ins->sreg1);
2684 }
2685 s390_nr (code, ins->dreg, s390_r0);
2686 }
2687 break;
2688 case CEE_CONV_U2: {
2689 s390_lhi (code, s390_r0, -1);
2690 s390_sll (code, s390_r0, 0, 16);
2691 s390_srl (code, s390_r0, 0, 16);
2692 if (ins->dreg != ins->sreg1) {
2693 s390_lr (code, ins->dreg, ins->sreg1);
2694 }
2695 s390_nr (code, ins->dreg, s390_r0);
2696 }
2697 break;
2698 case OP_COMPARE: {
2699 if ((ins->next) &&
2700 (((ins->next->opcode >= CEE_BNE_UN) &&
2701 (ins->next->opcode <= CEE_BLT_UN)) ||
2702 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
2703 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
2704 ((ins->next->opcode == OP_CLT_UN) ||
2705 (ins->next->opcode == OP_CGT_UN))))
2706 s390_clr (code, ins->sreg1, ins->sreg2);
2707 else
2708 s390_cr (code, ins->sreg1, ins->sreg2);
2709 }
2710 break;
2711 case OP_COMPARE_IMM: {
2712 if (s390_is_imm16 (ins->inst_imm)) {
2713 s390_lhi (code, s390_r0, ins->inst_imm);
2714 if ((ins->next) &&
2715 (((ins->next->opcode >= CEE_BNE_UN) &&
2716 (ins->next->opcode <= CEE_BLT_UN)) ||
2717 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
2718 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
2719 ((ins->next->opcode == OP_CLT_UN) ||
2720 (ins->next->opcode == OP_CGT_UN))))
2721 s390_clr (code, ins->sreg1, s390_r0);
2722 else
2723 s390_cr (code, ins->sreg1, s390_r0);
2724 }
2725 else {
2726 s390_basr (code, s390_r13, 0);
2727 s390_j (code, 4);
2728 s390_word (code, ins->inst_imm);
2729 if ((ins->next) &&
2730 (((ins->next->opcode >= CEE_BNE_UN) &&
2731 (ins->next->opcode <= CEE_BLT_UN)) ||
2732 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
2733 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
2734 ((ins->next->opcode == OP_CLT_UN) ||
2735 (ins->next->opcode == OP_CGT_UN))))
2736 s390_cl (code, ins->sreg1, 0, s390_r13, 4);
2737 else
2738 s390_c (code, ins->sreg1, 0, s390_r13, 4);
2739 }
2740 }
2741 break;
2742 case CEE_BREAK: {
2743 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS, mono_arch_break);
2744 s390_brasl (code, s390_r14, 0);
2745 }
2746 break;
2747 case OP_ADDCC: {
2748 CHECK_SRCDST_COM;
2749 s390_alr (code, ins->dreg, src2);
2750 }
2751 break;
2752 case CEE_ADD: {
2753 CHECK_SRCDST_COM;
2754 s390_ar (code, ins->dreg, src2);
2755 }
2756 break;
2757 case OP_ADC: {
2758 CHECK_SRCDST_COM;
2759 s390_alcr (code, ins->dreg, src2);
2760 }
2761 break;
2762 case OP_ADD_IMM: {
2763 if (ins->dreg != ins->sreg1) {
2764 s390_lr (code, ins->dreg, ins->sreg1);
2765 }
2766 if ((ins->next) &&
2767 (ins->next->opcode == OP_ADC_IMM)) {
2768 s390_basr (code, s390_r13, 0);
2769 s390_j (code, 4);
2770 s390_word (code, ins->inst_imm);
2771 s390_a (code, ins->dreg, 0, s390_r13, 4);
2772 } else {
2773 if (s390_is_imm16 (ins->inst_imm)) {
2774 s390_ahi (code, ins->dreg, ins->inst_imm);
2775 } else {
2776 s390_basr (code, s390_r13, 0);
2777 s390_j (code, 4);
2778 s390_word (code, ins->inst_imm);
2779 s390_a (code, ins->dreg, 0, s390_r13, 4);
2780 }
2781 }
2782 }
2783 break;
2784 case OP_ADDCC_IMM: {
2785 if ((ins->next) &&
2786 (ins->next->opcode == OP_ADC_IMM)) {
2787 s390_basr (code, s390_r13, 0);
2788 s390_j (code, 4);
2789 s390_word (code, ins->inst_imm);
2790 if (ins->dreg != ins->sreg1) {
2791 s390_lr (code, ins->dreg, ins->sreg1);
2792 }
2793 s390_al (code, ins->dreg, 0, s390_r13, 4);
2794 } else {
2795 if (s390_is_imm16 (ins->inst_imm)) {
2796 if (ins->dreg != ins->sreg1) {
2797 s390_lr (code, ins->dreg, ins->sreg1);
2798 }
2799 s390_lhi (code, s390_r0, ins->inst_imm);
2800 s390_alcr (code, ins->dreg, s390_r0);
2801 } else {
2802 s390_basr (code, s390_r13, 0);
2803 s390_j (code, 4);
2804 s390_word (code, ins->inst_imm);
2805 if (ins->dreg != ins->sreg1) {
2806 s390_lr (code, ins->dreg, ins->sreg1);
2807 }
2808 s390_al (code, ins->dreg, 0, s390_r13, 4);
2809 }
2810 }
2811 }
2812 break;
2813 case OP_ADC_IMM: {
2814 if (s390_is_imm16 (ins->inst_imm)) {
2815 if (ins->dreg != ins->sreg1) {
2816 s390_lr (code, ins->dreg, ins->sreg1);
2817 }
2818 s390_lhi (code, s390_r0, ins->inst_imm);
2819 s390_alcr (code, ins->dreg, s390_r0);
2820 } else {
2821 s390_basr (code, s390_r13, 0);
2822 s390_j (code, 4);
2823 s390_word (code, ins->inst_imm);
2824 s390_l (code, s390_r13, 0, s390_r13, 4);
2825 s390_alcr (code, ins->dreg, s390_r13);
2826 }
2827 }
2828 break;
2829 case CEE_ADD_OVF: {
2830 CHECK_SRCDST_COM;
2831 s390_ar (code, ins->dreg, src2);
2832 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2833 }
2834 break;
2835 case CEE_ADD_OVF_UN: {
2836 CHECK_SRCDST_COM;
2837 s390_alr (code, ins->dreg, src2);
2838 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
2839 }
2840 break;
2841 case OP_LADD: {
2842 short int *o[1];
2843 s390_alr (code, s390_r0, ins->sreg1);
2844 s390_jnc (code, 4);
2845 s390_ahi (code, s390_r1, 1);
2846 s390_ar (code, s390_r1, ins->sreg2);
2847 s390_lr (code, ins->dreg, s390_r0);
2848 s390_lr (code, ins->dreg+1, s390_r1);
2849 }
2850 break;
2851 case OP_LADD_OVF: {
2852 short int *o[1];
2853 s390_alr (code, s390_r0, ins->sreg1);
2854 s390_jnc (code, 0); CODEPTR(code, o[0]);
2855 s390_ahi (code, s390_r1, 1);
2856 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2857 PTRSLOT (code, o[0]);
2858 s390_ar (code, s390_r1, ins->sreg2);
2859 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2860 s390_lr (code, ins->dreg, s390_r0);
2861 s390_lr (code, ins->dreg+1, s390_r1);
2862 }
2863 break;
2864 case OP_LADD_OVF_UN: {
2865 s390_alr (code, s390_r0, ins->sreg1);
2866 s390_alcr (code, s390_r1, ins->sreg2);
2867 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
2868 s390_lr (code, ins->dreg, s390_r0);
2869 s390_lr (code, ins->dreg+1, s390_r1);
2870 }
2871 break;
2872 case OP_ADD_OVF_CARRY: {
2873 CHECK_SRCDST_COM;
2874 s390_lhi (code, s390_r0, 0);
2875 s390_lr (code, s390_r1, s390_r0);
2876 s390_alcr (code, s390_r0, s390_r1);
2877 s390_ar (code, ins->dreg, src2);
2878 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2879 s390_ar (code, ins->dreg, s390_r0);
2880 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2881 }
2882 break;
2883 case OP_ADD_OVF_UN_CARRY: {
2884 CHECK_SRCDST_COM;
2885 s390_alcr (code, ins->dreg, src2);
2886 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
2887 }
2888 break;
2889 case OP_SUBCC: {
2890 CHECK_SRCDST_NCOM;
2891 s390_slr (code, ins->dreg, src2);
2892 }
2893 break;
2894 case CEE_SUB: {
2895 CHECK_SRCDST_NCOM;
2896 s390_sr (code, ins->dreg, src2);
2897 }
2898 break;
2899 case OP_SBB: {
2900 CHECK_SRCDST_NCOM;
2901 s390_slbr (code, ins->dreg, src2);
2902 }
2903 break;
2904 case OP_SUBCC_IMM: {
2905 if (s390_is_imm16 (-ins->inst_imm)) {
2906 if (ins->dreg != ins->sreg1) {
2907 s390_lr (code, ins->dreg, ins->sreg1);
2908 }
2909 s390_lhi (code, s390_r0, ins->inst_imm);
2910 s390_slr (code, ins->dreg, s390_r0);
2911 } else {
2912 s390_basr (code, s390_r13, 0);
2913 s390_j (code, 4);
2914 s390_word (code, ins->inst_imm);
2915 if (ins->dreg != ins->sreg1) {
2916 s390_lr (code, ins->dreg, ins->sreg1);
2917 }
2918 s390_sl (code, ins->dreg, 0, s390_r13, 4);
2919 }
2920 }
2921 break;
2922 case OP_SUB_IMM: {
2923 if (s390_is_imm16 (-ins->inst_imm)) {
2924 if (ins->dreg != ins->sreg1) {
2925 s390_lr (code, ins->dreg, ins->sreg1);
2926 }
2927 s390_ahi (code, ins->dreg, -ins->inst_imm);
2928 } else {
2929 s390_basr (code, s390_r13, 0);
2930 s390_j (code, 4);
2931 s390_word (code, ins->inst_imm);
2932 if (ins->dreg != ins->sreg1) {
2933 s390_lr (code, ins->dreg, ins->sreg1);
2934 }
2935 s390_s (code, ins->dreg, 0, s390_r13, 4);
2936 }
2937 }
2938 break;
2939 case OP_SBB_IMM: {
2940 if (ins->dreg != ins->sreg1) {
2941 s390_lr (code, ins->dreg, ins->sreg1);
2942 }
2943 if (s390_is_imm16 (-ins->inst_imm)) {
2944 s390_lhi (code, s390_r0, ins->inst_imm);
2945 s390_slbr (code, ins->dreg, s390_r0);
2946 } else {
2947 s390_basr (code, s390_r13, 0);
2948 s390_j (code, 4);
2949 s390_word (code, ins->inst_imm);
2950 s390_slb (code, ins->dreg, 0, s390_r13, 4);
2951 }
2952 }
2953 break;
2954 case CEE_SUB_OVF: {
2955 CHECK_SRCDST_NCOM;
2956 s390_sr (code, ins->dreg, src2);
2957 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2958 }
2959 break;
2960 case CEE_SUB_OVF_UN: {
2961 CHECK_SRCDST_NCOM;
2962 s390_slr (code, ins->dreg, src2);
2963 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
2964 }
2965 break;
2966 case OP_LSUB: {
2967 s390_lr (code, s390_r14, ins->sreg2);
2968 s390_slr (code, s390_r0, ins->sreg1);
2969 s390_jnl (code, 4);
2970 s390_ahi (code, s390_r14, 1);
2971 s390_sr (code, s390_r1, s390_r14);
2972 s390_lr (code, ins->dreg, s390_r0);
2973 s390_lr (code, ins->dreg+1, s390_r1);
2974 }
2975 break;
2976 case OP_LSUB_OVF: {
2977 short int *o[1];
2978 s390_lr (code, s390_r14, ins->sreg2);
2979 s390_slr (code, s390_r0, ins->sreg1);
2980 s390_jnl (code, 0); CODEPTR(code, o[0]);
2981 s390_ahi (code, s390_r14, 1);
2982 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2983 PTRSLOT (code, o[0]);
2984 s390_sr (code, s390_r1, s390_r14);
2985 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
2986 s390_lr (code, ins->dreg, s390_r0);
2987 s390_lr (code, ins->dreg+1, s390_r1);
2988 }
2989 break;
2990 case OP_LSUB_OVF_UN: {
2991 s390_slr (code, s390_r0, ins->sreg1);
2992 s390_slbr (code, s390_r1, ins->sreg2);
2993 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, "OverflowException");
2994 s390_lr (code, ins->dreg, s390_r0);
2995 s390_lr (code, ins->dreg+1, s390_r1);
2996 }
2997 break;
2998 case OP_SUB_OVF_CARRY: {
2999 CHECK_SRCDST_NCOM;
3000 s390_lhi (code, s390_r0, 0);
3001 s390_lr (code, s390_r1, s390_r0);
3002 s390_slbr (code, s390_r0, s390_r1);
3003 s390_sr (code, ins->dreg, src2);
3004 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3005 s390_ar (code, ins->dreg, s390_r0);
3006 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3007 }
3008 break;
3009 case OP_SUB_OVF_UN_CARRY: {
3010 CHECK_SRCDST_NCOM;
3011 s390_slbr (code, ins->dreg, src2);
3012 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3013 }
3014 break;
3015 case CEE_AND: {
3016 if (ins->sreg1 == ins->dreg) {
3017 s390_nr (code, ins->dreg, ins->sreg2);
3018 }
3019 else {
3020 if (ins->sreg2 == ins->dreg) {
3021 s390_nr (code, ins->dreg, ins->sreg1);
3022 }
3023 else {
3024 s390_lr (code, ins->dreg, ins->sreg1);
3025 s390_nr (code, ins->dreg, ins->sreg2);
3026 }
3027 }
3028 }
3029 break;
3030 case OP_AND_IMM: {
3031 if (s390_is_imm16 (ins->inst_imm)) {
3032 s390_lhi (code, s390_r0, ins->inst_imm);
3033 if (ins->dreg != ins->sreg1) {
3034 s390_lr (code, ins->dreg, ins->sreg1);
3035 }
3036 s390_nr (code, ins->dreg, s390_r0);
3037 } else {
3038 s390_basr (code, s390_r13, 0);
3039 s390_j (code, 4);
3040 s390_word (code, ins->inst_imm);
3041 if (ins->dreg != ins->sreg1) {
3042 s390_lr (code, ins->dreg, ins->sreg1);
3043 }
3044 s390_n (code, ins->dreg, 0, s390_r13, 4);
3045 }
3046 }
3047 break;
3048 case CEE_DIV: {
3049 s390_lr (code, s390_r0, ins->sreg1);
3050 s390_srda (code, s390_r0, 0, 32);
3051 s390_dr (code, s390_r0, ins->sreg2);
3052 s390_lr (code, ins->dreg, s390_r1);
3053 }
3054 break;
3055 case CEE_DIV_UN: {
3056 s390_lr (code, s390_r0, ins->sreg1);
3057 s390_srdl (code, s390_r0, 0, 32);
3058 s390_dlr (code, s390_r0, ins->sreg2);
3059 s390_lr (code, ins->dreg, s390_r1);
3060 }
3061 break;
3062 case OP_DIV_IMM: {
3063 if (s390_is_imm16 (ins->inst_imm)) {
3064 s390_lhi (code, s390_r13, ins->inst_imm);
3065 s390_lr (code, s390_r0, ins->sreg1);
3066 } else {
3067 s390_basr (code, s390_r13, 0);
3068 s390_j (code, 4);
3069 s390_word (code, ins->inst_imm);
3070 s390_lr (code, s390_r0, ins->sreg1);
3071 s390_l (code, s390_r13, 0, s390_r13, 4);
3072 }
3073 s390_srda (code, s390_r0, 0, 32);
3074 s390_dr (code, s390_r0, s390_r13);
3075 s390_lr (code, ins->dreg, s390_r1);
3076 }
3077 break;
3078 case CEE_REM: {
3079 s390_lr (code, s390_r0, ins->sreg1);
3080 s390_srda (code, s390_r0, 0, 32);
3081 s390_dr (code, s390_r0, ins->sreg2);
3082 s390_lr (code, ins->dreg, s390_r0);
3083 break;
3084 case CEE_REM_UN:
3085 s390_lr (code, s390_r0, ins->sreg1);
3086 s390_srdl (code, s390_r0, 0, 32);
3087 s390_dlr (code, s390_r0, ins->sreg2);
3088 s390_lr (code, ins->dreg, s390_r0);
3089 }
3090 break;
3091 case OP_REM_IMM: {
3092 if (s390_is_imm16 (ins->inst_imm)) {
3093 s390_lhi (code, s390_r13, ins->inst_imm);
3094 s390_lr (code, s390_r0, ins->sreg1);
3095 } else {
3096 s390_basr (code, s390_r13, 0);
3097 s390_j (code, 4);
3098 s390_word (code, ins->inst_imm);
3099 s390_lr (code, s390_r0, ins->sreg1);
3100 s390_l (code, s390_r13, 0, s390_r13, 4);
3101 }
3102 s390_srda (code, s390_r0, 0, 32);
3103 s390_dr (code, s390_r0, s390_r13);
3104 s390_lr (code, ins->dreg, s390_r0);
3105 }
3106 break;
3107 case CEE_OR: {
3108 if (ins->sreg1 == ins->dreg) {
3109 s390_or (code, ins->dreg, ins->sreg2);
3110 }
3111 else {
3112 if (ins->sreg2 == ins->dreg) {
3113 s390_or (code, ins->dreg, ins->sreg1);
3114 }
3115 else {
3116 s390_lr (code, ins->dreg, ins->sreg1);
3117 s390_or (code, ins->dreg, ins->sreg2);
3118 }
3119 }
3120 }
3121 break;
3122 case OP_OR_IMM: {
3123 if (s390_is_imm16 (ins->inst_imm)) {
3124 s390_lhi (code, s390_r0, ins->inst_imm);
3125 if (ins->dreg != ins->sreg1) {
3126 s390_lr (code, ins->dreg, ins->sreg1);
3127 }
3128 s390_or (code, ins->dreg, s390_r0);
3129 } else {
3130 s390_basr (code, s390_r13, 0);
3131 s390_j (code, 4);
3132 s390_word (code, ins->inst_imm);
3133 if (ins->dreg != ins->sreg1) {
3134 s390_lr (code, ins->dreg, ins->sreg1);
3135 }
3136 s390_o (code, ins->dreg, 0, s390_r13, 4);
3137 }
3138 }
3139 break;
3140 case CEE_XOR: {
3141 if (ins->sreg1 == ins->dreg) {
3142 s390_xr (code, ins->dreg, ins->sreg2);
3143 }
3144 else {
3145 if (ins->sreg2 == ins->dreg) {
3146 s390_xr (code, ins->dreg, ins->sreg1);
3147 }
3148 else {
3149 s390_lr (code, ins->dreg, ins->sreg1);
3150 s390_xr (code, ins->dreg, ins->sreg2);
3151 }
3152 }
3153 }
3154 break;
3155 case OP_XOR_IMM: {
3156 if (s390_is_imm16 (ins->inst_imm)) {
3157 s390_lhi (code, s390_r0, ins->inst_imm);
3158 if (ins->dreg != ins->sreg1) {
3159 s390_lr (code, ins->dreg, ins->sreg1);
3160 }
3161 s390_xr (code, ins->dreg, s390_r0);
3162 } else {
3163 s390_basr (code, s390_r13, 0);
3164 s390_j (code, 4);
3165 s390_word (code, ins->inst_imm);
3166 if (ins->dreg != ins->sreg1) {
3167 s390_lr (code, ins->dreg, ins->sreg1);
3168 }
3169 s390_x (code, ins->dreg, 0, s390_r13, 4);
3170 }
3171 }
3172 break;
3173 case CEE_SHL: {
3174 CHECK_SRCDST_NCOM;
3175 s390_sll (code, ins->dreg, src2, 0);
3176 }
3177 break;
3178 case OP_SHL_IMM: {
3179 if (ins->sreg1 != ins->dreg) {
3180 s390_lr (code, ins->dreg, ins->sreg1);
3181 }
3182 s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3183 }
3184 break;
3185 case CEE_SHR: {
3186 CHECK_SRCDST_NCOM;
3187 s390_sra (code, ins->dreg, src2, 0);
3188 }
3189 break;
3190 case OP_SHR_IMM: {
3191 if (ins->sreg1 != ins->dreg) {
3192 s390_lr (code, ins->dreg, ins->sreg1);
3193 }
3194 s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3195 }
3196 break;
3197 case OP_SHR_UN_IMM: {
3198 if (ins->sreg1 != ins->dreg) {
3199 s390_lr (code, ins->dreg, ins->sreg1);
3200 }
3201 s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3202 }
3203 break;
3204 case CEE_SHR_UN: {
3205 CHECK_SRCDST_NCOM;
3206 s390_srl (code, ins->dreg, src2, 0);
3207 }
3208 break;
3209 case CEE_NOT: {
3210 if (ins->sreg1 != ins->dreg) {
3211 s390_lr (code, ins->dreg, ins->sreg1);
3212 }
3213 s390_lhi (code, s390_r0, -1);
3214 s390_xr (code, ins->dreg, s390_r0);
3215 }
3216 break;
3217 case CEE_NEG: {
3218 s390_lcr (code, ins->dreg, ins->sreg1);
3219 }
3220 break;
3221 case CEE_MUL: {
3222 if (ins->sreg1 == ins->dreg) {
3223 s390_msr (code, ins->dreg, ins->sreg2);
3224 }
3225 else {
3226 if (ins->sreg2 == ins->dreg) {
3227 s390_msr (code, ins->dreg, ins->sreg1);
3228 }
3229 else {
3230 s390_lr (code, ins->dreg, ins->sreg1);
3231 s390_msr (code, ins->dreg, ins->sreg2);
3232 }
3233 }
3234 }
3235 break;
3236 case OP_MUL_IMM: {
3237 if (s390_is_imm16 (ins->inst_imm)) {
3238 s390_lhi (code, s390_r13, ins->inst_imm);
3239 } else {
3240 s390_basr (code, s390_r13, 0);
3241 s390_j (code, 4);
3242 s390_word (code, ins->inst_imm);
3243 // if (ins->dreg != ins->sreg1) {
3244 // s390_lr (code, ins->dreg, ins->sreg1);
3245 // }
3246 s390_l (code, s390_r13, 0, s390_r13, 4);
3247 }
3248 if (ins->dreg != ins->sreg1) {
3249 s390_lr (code, ins->dreg, ins->sreg1);
3250 }
3251 s390_msr (code, ins->dreg, s390_r13);
3252 }
3253 break;
3254 case CEE_MUL_OVF: {
3255 short int *o[2];
3256 s390_ltr (code, s390_r1, ins->sreg1);
3257 s390_jz (code, 0); CODEPTR(code, o[0]);
3258 s390_ltr (code, s390_r0, ins->sreg2);
3259 s390_jnz (code, 6);
3260 s390_lhi (code, s390_r1, 0);
3261 s390_j (code, 0); CODEPTR(code, o[1]);
3262 s390_xr (code, s390_r0, s390_r1);
3263 s390_msr (code, s390_r1, ins->sreg2);
3264 s390_xr (code, s390_r0, s390_r1);
3265 s390_srl (code, s390_r0, 0, 31);
3266 s390_ltr (code, s390_r0, s390_r0);
3267 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3268 PTRSLOT (code, o[0]);
3269 PTRSLOT (code, o[1]);
3270 s390_lr (code, ins->dreg, s390_r1);
3271 }
3272 break;
3273 case CEE_MUL_OVF_UN: {
3274 s390_lhi (code, s390_r0, 0);
3275 s390_lr (code, s390_r1, ins->sreg1);
3276 s390_mlr (code, s390_r0, ins->sreg2);
3277 s390_ltr (code, s390_r0, s390_r0);
3278 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3279 s390_lr (code, ins->dreg, s390_r1);
3280 }
3281 break;
3282 case OP_LMUL: {
3283 s390_l (code, s390_r0, 0, ins->sreg1, 4);
3284 s390_srda (code, s390_r0, 0, 32);
3285 s390_m (code, s390_r0, 0, ins->sreg2, 4);
3286 s390_l (code, s390_r0, 0, ins->sreg1, 4);
3287 s390_srl (code, s390_r0, 0, 31);
3288 s390_a (code, s390_r0, 0, ins->sreg1, 0);
3289 s390_l (code, s390_r13, 0, ins->sreg2, 0);
3290 s390_srl (code, s390_r13, 0, 31);
3291 s390_ms (code, s390_r13, 0, ins->sreg1, 4);
3292 s390_ar (code, s390_r0, s390_r13);
3293 s390_st (code, s390_r0, 0, ins->dreg, 0);
3294 s390_st (code, s390_r1, 0, ins->dreg, 4);
3295 }
3296 break;
3297 case OP_ICONST:
3298 case OP_SETREGIMM: {
3299 if (s390_is_imm16(ins->inst_c0)) {
3300 s390_lhi (code, ins->dreg, ins->inst_c0);
3301 } else {
3302 s390_basr (code, s390_r13, 0);
3303 s390_j (code, 4);
3304 s390_word (code, ins->inst_c0);
3305 s390_l (code, ins->dreg, 0, s390_r13, 4);
3306 }
3307 }
3308 break;
3309 case OP_AOTCONST: {
3310 s390_basr (code, s390_r13, 0);
3311 s390_j (code, 4);
3312 mono_add_patch_info (cfg, code - cfg->native_code,
3313 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3314 s390_word (code, 0);
3315 s390_l (code,ins->dreg, 0, s390_r13, 4);
3316 }
3317 break;
3318 case CEE_CONV_I4:
3319 case CEE_CONV_U4:
3320 case OP_MOVE:
3321 case OP_SETREG: {
3322 if (ins->dreg != ins->sreg1) {
3323 s390_lr (code, ins->dreg, ins->sreg1);
3324 }
3325 }
3326 break;
3327 case OP_SETLRET: {
3328 int saved = ins->sreg1;
3329 if (ins->sreg1 == s390_r2) {
3330 s390_lr (code, s390_r0, ins->sreg1);
3331 saved = s390_r0;
3332 }
3333 if (ins->sreg2 != s390_r2)
3334 s390_lr (code, s390_r2, ins->sreg2);
3335 if (saved != s390_r3)
3336 s390_lr (code, s390_r3, saved);
3337 break;
3338 }
3339 case OP_SETFREG:
3340 case OP_FMOVE: {
3341 if (ins->dreg != ins->sreg1) {
3342 s390_ldr (code, ins->dreg, ins->sreg1);
3343 }
3344 }
3345 break;
3346 case OP_S390_SETF4RET: {
3347 s390_ledbr (code, ins->dreg, ins->sreg1);
3348 }
3349 break;
3350 case OP_TLS_GET: {
3351 if (s390_is_imm16 (ins->inst_offset)) {
3352 s390_lhi (code, s390_r13, ins->inst_offset);
3353 } else {
3354 s390_bras (code, s390_r13, 0);
3355 s390_j (code, 4);
3356 s390_word (code, ins->inst_offset);
3357 s390_l (code, s390_r13, 0, s390_r13, 4);
3358 }
3359 s390_ear (code, s390_r1, 0);
3360 s390_l (code, ins->dreg, s390_r13, s390_r1, 0);
3361 }
3362 break;
3363 case OP_FCONV_TO_R4: {
3364 NOT_IMPLEMENTED("OP_FCONV_TO_R4");
3365 if ((ins->next) &&
3366 (ins->next->opcode != OP_FMOVE) &&
3367 (ins->next->opcode != OP_STORER4_MEMBASE_REG))
3368 s390_ledbr (code, ins->dreg, ins->sreg1);
3369 }
3370 break;
3371 case CEE_JMP: {
3372 if (cfg->method->save_lmf)
3373 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
3374
3375 if (cfg->flags & MONO_CFG_HAS_TAIL) {
3376 code = emit_load_volatile_registers(code, cfg);
3377 }
3378
3379 code = backUpStackPtr(cfg, code, STK_BASE);
3380 s390_l (code, s390_r14, 0, STK_BASE, S390_RET_ADDR_OFFSET);
3381 mono_add_patch_info (cfg, code - cfg->native_code,
3382 MONO_PATCH_INFO_METHOD_JUMP,
3383 ins->inst_p0);
3384 s390_jcl (code, S390_CC_UN, 0);
3385 }
3386 break;
3387 case OP_CHECK_THIS: {
3388 /* ensure ins->sreg1 is not NULL */
3389 s390_icm (code, s390_r0, 15, ins->sreg1, 0);
3390 }
3391 break;
3392 case OP_ARGLIST: {
3393 int offset = cfg->sig_cookie + cfg->stack_usage;
3394
3395 if (s390_is_imm16 (offset))
3396 s390_lhi (code, s390_r0, offset);
3397 else {
3398 s390_basr (code, s390_r13, 0);
3399 s390_j (code, 4);
3400 s390_word (code, offset);
3401 s390_l (code, s390_r0, 0, s390_r13, 0);
3402 }
3403 s390_ar (code, s390_r0, cfg->frame_reg);
3404 s390_st (code, s390_r0, 0, ins->sreg1, 0);
3405 }
3406 break;
3407 case OP_FCALL: {
3408 call = (MonoCallInst*)ins;
3409 if (ins->flags & MONO_INST_HAS_METHOD)
3410 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD,
3411 call->method);
3412 else
3413 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS,
3414 call->fptr);
3415 s390_brasl (code, s390_r14, 0);
3416 if (call->signature->ret->type == MONO_TYPE_R4)
3417 s390_ldebr (code, s390_f0, s390_f0);
3418 }
3419 break;
3420 case OP_LCALL:
3421 case OP_VCALL:
3422 case OP_VOIDCALL:
3423 case CEE_CALL: {
3424 call = (MonoCallInst*)ins;
3425 if (ins->flags & MONO_INST_HAS_METHOD)
3426 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD, call->method);
3427 else
3428 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS, call->fptr);
3429 s390_brasl (code, s390_r14, 0);
3430 }
3431 break;
3432 case OP_FCALL_REG: {
3433 call = (MonoCallInst*)ins;
3434 s390_lr (code, s390_r1, ins->sreg1);
3435 s390_basr (code, s390_r14, s390_r1);
3436 if (call->signature->ret->type == MONO_TYPE_R4)
3437 s390_ldebr (code, s390_f0, s390_f0);
3438 }
3439 break;
3440 case OP_LCALL_REG:
3441 case OP_VCALL_REG:
3442 case OP_VOIDCALL_REG:
3443 case OP_CALL_REG: {
3444 s390_lr (code, s390_r1, ins->sreg1);
3445 s390_basr (code, s390_r14, s390_r1);
3446 }
3447 break;
3448 case OP_FCALL_MEMBASE: {
3449 call = (MonoCallInst*)ins;
3450 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3451 s390_basr (code, s390_r14, s390_r1);
3452 if (call->signature->ret->type == MONO_TYPE_R4)
3453 s390_ldebr (code, s390_f0, s390_f0);
3454 }
3455 break;
3456 case OP_LCALL_MEMBASE:
3457 case OP_VCALL_MEMBASE:
3458 case OP_VOIDCALL_MEMBASE:
3459 case OP_CALL_MEMBASE: {
3460 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3461 s390_basr (code, s390_r14, s390_r1);
3462 }
3463 break;
3464 case OP_OUTARG:
3465 g_assert_not_reached ();
3466 break;
3467 case OP_LOCALLOC: {
3468 /*------------------------------------------*/
3469 /* To allocate space on the stack we have */
3470 /* to allow room for parameters passed in */
3471 /* calls, the backchain pointer and round */
3472 /* it to our stack alignment requirements */
3473 /*------------------------------------------*/
3474 int alloca_skip = S390_MINIMAL_STACK_SIZE + cfg->param_area;
3475 int area_offset = S390_ALIGN(alloca_skip, S390_STACK_ALIGNMENT);
3476 s390_lr (code, s390_r1, ins->sreg1);
3477 if (ins->flags & MONO_INST_INIT)
3478 s390_lr (code, s390_r0, ins->sreg1);
3479 s390_ahi (code, s390_r1, 14);
3480 s390_srl (code, s390_r1, 0, 3);
3481 s390_sll (code, s390_r1, 0, 3);
3482 if (cfg->method->save_lmf) {
3483 /*----------------------------------*/
3484 /* we have to adjust lmf ebp value */
3485 /*----------------------------------*/
3486 int lmfOffset = cfg->stack_usage - sizeof(MonoLMF);
3487
3488 s390_lr (code, s390_r13, cfg->frame_reg);
3489 if (s390_is_uimm16(lmfOffset))
3490 s390_ahi (code, s390_r13, lmfOffset);
3491 else {
3492 s390_basr (code, s390_r14, 0);
3493 s390_j (code, 4);
3494 s390_word (code, lmfOffset);
3495 s390_a (code, s390_r13, 0, s390_r14, 4);
3496 }
3497 s390_lr (code, s390_r14, STK_BASE);
3498 s390_sr (code, s390_r14, s390_r1);
3499 s390_st (code, s390_r14, 0, s390_r13,
3500 G_STRUCT_OFFSET(MonoLMF, ebp));
3501 }
3502 s390_l (code, s390_r13, 0, STK_BASE, 0);
3503 s390_sr (code, STK_BASE, s390_r1);
3504 s390_st (code, s390_r13, 0, STK_BASE, 0);
3505 s390_la (code, ins->dreg, 0, STK_BASE, area_offset);
3506 s390_srl (code, ins->dreg, 0, 3);
3507 s390_sll (code, ins->dreg, 0, 3);
3508 if (ins->flags & MONO_INST_INIT) {
3509 s390_lr (code, s390_r1, s390_r0);
3510 s390_lr (code, s390_r0, ins->dreg);
3511 s390_lr (code, s390_r14, s390_r12);
3512 s390_lhi (code, s390_r13, 0);
3513 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
3514 s390_jo (code, -2);
3515 s390_lr (code, s390_r12, s390_r14);
3516 }
3517 }
3518 break;
3519 case CEE_RET: {
3520 s390_br (code, s390_r14);
3521 }
3522 break;
3523 case CEE_THROW: {
3524 s390_lr (code, s390_r2, ins->sreg1);
3525 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3526 (gpointer)"mono_arch_throw_exception");
3527 s390_brasl (code, s390_r14, 0);
3528 }
3529 break;
3530 case OP_RETHROW: {
3531 s390_lr (code, s390_r2, ins->sreg1);
3532 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3533 (gpointer)"mono_arch_rethrow_exception");
3534 s390_brasl (code, s390_r14, 0);
3535 }
3536 break;
3537 case OP_START_HANDLER: {
3538 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
3539 s390_st (code, s390_r14, 0,
3540 ins->inst_left->inst_basereg,
3541 ins->inst_left->inst_offset);
3542 } else {
3543 s390_basr (code, s390_r13, 0);
3544 s390_j (code, 4);
3545 s390_word (code, ins->inst_left->inst_offset);
3546 s390_l (code, s390_r13, 0, s390_r13, 4);
3547 s390_st (code, s390_r14, s390_r13,
3548 ins->inst_left->inst_basereg, 0);
3549 }
3550 }
3551 break;
3552 case OP_ENDFILTER: {
3553 if (ins->sreg1 != s390_r2)
3554 s390_lr (code, s390_r2, ins->sreg1);
3555 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
3556 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg,
3557 ins->inst_left->inst_offset);
3558 } else {
3559 s390_basr (code, s390_r13, 0);
3560 s390_j (code, 4);
3561 s390_word (code, ins->inst_left->inst_offset);
3562 s390_l (code, s390_r13, 0, s390_r13, 4);
3563 s390_l (code, s390_r14, s390_r13,
3564 ins->inst_left->inst_basereg, 0);
3565 }
3566 s390_br (code, s390_r14);
3567 }
3568 break;
3569 case CEE_ENDFINALLY: {
3570 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
3571 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg,
3572 ins->inst_left->inst_offset);
3573 } else {
3574 s390_basr (code, s390_r13, 0);
3575 s390_j (code, 4);
3576 s390_word (code, ins->inst_left->inst_offset);
3577 s390_l (code, s390_r13, 0, s390_r13, 4);
3578 s390_l (code, s390_r14, s390_r13,
3579 ins->inst_left->inst_basereg, 0);
3580 }
3581 s390_br (code, s390_r14);
3582 }
3583 break;
3584 case OP_CALL_HANDLER: {
3585 mono_add_patch_info (cfg, code-cfg->native_code,
3586 MONO_PATCH_INFO_BB, ins->inst_target_bb);
3587 s390_brasl (code, s390_r14, 0);
3588 }
3589 break;
3590 case OP_LABEL: {
3591 ins->inst_c0 = code - cfg->native_code;
3592 }
3593 break;
3594 case CEE_BR:
3595 EMIT_UNCOND_BRANCH(ins);
3596 break;
3597 case OP_BR_REG: {
3598 s390_br (code, ins->sreg1);
3599 }
3600 break;
3601 case OP_CEQ: {
3602 s390_lhi (code, ins->dreg, 1);
3603 s390_jz (code, 4);
3604 s390_lhi (code, ins->dreg, 0);
3605 }
3606 break;
3607 case OP_CLT: {
3608 s390_lhi (code, ins->dreg, 1);
3609 s390_jl (code, 4);
3610 s390_lhi (code, ins->dreg, 0);
3611 }
3612 break;
3613 case OP_CLT_UN: {
3614 s390_lhi (code, ins->dreg, 1);
3615 s390_jlo (code, 4);
3616 s390_lhi (code, ins->dreg, 0);
3617 }
3618 break;
3619 case OP_CGT: {
3620 s390_lhi (code, ins->dreg, 1);
3621 s390_jh (code, 4);
3622 s390_lhi (code, ins->dreg, 0);
3623 }
3624 break;
3625 case OP_CGT_UN: {
3626 s390_lhi (code, ins->dreg, 1);
3627 s390_jho (code, 4);
3628 s390_lhi (code, ins->dreg, 0);
3629 }
3630 break;
3631 case OP_COND_EXC_EQ:
3632 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
3633 break;
3634 case OP_COND_EXC_NE_UN:
3635 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
3636 break;
3637 case OP_COND_EXC_LT:
3638 case OP_COND_EXC_LT_UN:
3639 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
3640 break;
3641 case OP_COND_EXC_GT:
3642 case OP_COND_EXC_GT_UN:
3643 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
3644 break;
3645 case OP_COND_EXC_GE:
3646 case OP_COND_EXC_GE_UN:
3647 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
3648 break;
3649 case OP_COND_EXC_LE:
3650 case OP_COND_EXC_LE_UN:
3651 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
3652 break;
3653 case OP_COND_EXC_OV:
3654 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
3655 break;
3656 case OP_COND_EXC_NO:
3657 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
3658 break;
3659 case OP_COND_EXC_C:
3660 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
3661 break;
3662 case OP_COND_EXC_NC:
3663 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
3664 break;
3665 case CEE_BEQ:
3666 EMIT_COND_BRANCH (ins, S390_CC_EQ);
3667 break;
3668 case CEE_BNE_UN:
3669 EMIT_COND_BRANCH (ins, S390_CC_NE);
3670 break;
3671 case CEE_BLT:
3672 case CEE_BLT_UN:
3673 EMIT_COND_BRANCH (ins, S390_CC_LT);
3674 break;
3675 case CEE_BGT:
3676 case CEE_BGT_UN:
3677 EMIT_COND_BRANCH (ins, S390_CC_GT);
3678 break;
3679 case CEE_BGE:
3680 case CEE_BGE_UN:
3681 EMIT_COND_BRANCH (ins, S390_CC_GE);
3682 break;
3683 case CEE_BLE:
3684 case CEE_BLE_UN:
3685 EMIT_COND_BRANCH (ins, S390_CC_LE);
3686 break;
3687
3688 /* floating point opcodes */
3689 case OP_R8CONST: {
3690 if (*((float *) ins->inst_p0) == 0) {
3691 s390_lzdr (code, ins->dreg);
3692 } else {
3693 s390_basr (code, s390_r13, 0);
3694 s390_j (code, 4);
3695 s390_word (code, ins->inst_p0);
3696 s390_l (code, s390_r13, 0, s390_r13, 4);
3697 s390_ld (code, ins->dreg, 0, s390_r13, 0);
3698 }
3699 }
3700 break;
3701 case OP_R4CONST: {
3702 if (*((float *) ins->inst_p0) == 0) {
3703 s390_lzdr (code, ins->dreg);
3704 } else {
3705 s390_basr (code, s390_r13, 0);
3706 s390_j (code, 4);
3707 s390_word (code, ins->inst_p0);
3708 s390_l (code, s390_r13, 0, s390_r13, 4);
3709 s390_ldeb (code, ins->dreg, 0, s390_r13, 0);
3710 }
3711 }
3712 break;
3713 case OP_STORER8_MEMBASE_REG: {
3714 if (s390_is_uimm12(ins->inst_offset)) {
3715 s390_std (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3716 } else {
3717 s390_basr (code, s390_r13, 0);
3718 s390_j (code, 4);
3719 s390_word (code, ins->inst_offset);
3720 s390_l (code, s390_r13, 0, s390_r13, 4);
3721 s390_std (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3722 }
3723 }
3724 break;
3725 case OP_LOADR8_MEMBASE: {
3726 if (s390_is_uimm12(ins->inst_offset)) {
3727 s390_ld (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3728 } else {
3729 s390_basr (code, s390_r13, 0);
3730 s390_j (code, 4);
3731 s390_word (code, ins->inst_offset);
3732 s390_l (code, s390_r13, 0, s390_r13, 4);
3733 s390_ld (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3734 }
3735 }
3736 break;
3737 case OP_STORER4_MEMBASE_REG: {
3738 if (s390_is_uimm12(ins->inst_offset)) {
3739 s390_ledbr(code, s390_f15, ins->sreg1);
3740 s390_ste (code, s390_f15, 0, ins->inst_destbasereg, ins->inst_offset);
3741 } else {
3742 s390_basr (code, s390_r13, 0);
3743 s390_j (code, 4);
3744 s390_word (code, ins->inst_offset);
3745 s390_l (code, s390_r13, 0, s390_r13, 4);
3746 s390_ledbr(code, s390_f15, ins->sreg1);
3747 s390_ste (code, s390_f15, s390_r13, ins->inst_destbasereg, 0);
3748 }
3749 }
3750 break;
3751 case OP_LOADR4_MEMBASE: {
3752 if (s390_is_uimm12(ins->inst_offset)) {
3753 s390_ldeb (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3754 } else {
3755 s390_basr (code, s390_r13, 0);
3756 s390_j (code, 4);
3757 s390_word (code, ins->inst_offset);
3758 s390_l (code, s390_r13, 0, s390_r13, 4);
3759 s390_ldeb (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3760 }
3761 }
3762 break;
3763 case CEE_CONV_R_UN: {
3764 s390_cdfbr (code, ins->dreg, ins->sreg1);
3765 s390_ltr (code, ins->sreg1, ins->sreg1);
3766 s390_jnl (code, 12);
3767 s390_basr (code, s390_r13, 0);
3768 s390_j (code, 6);
3769 s390_word (code, 0x41f00000);
3770 s390_word (code, 0);
3771 s390_adb (code, ins->dreg, 0, s390_r13, 4);
3772 }
3773 break;
3774 case CEE_CONV_R4: {
3775 s390_cdfbr (code, ins->dreg, ins->sreg1);
3776 }
3777 break;
3778 case CEE_CONV_R8: {
3779 s390_cdfbr (code, ins->dreg, ins->sreg1);
3780 }
3781 break;
3782 case OP_FCONV_TO_I1:
3783 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
3784 break;
3785 case OP_FCONV_TO_U1:
3786 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
3787 break;
3788 case OP_FCONV_TO_I2:
3789 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
3790 break;
3791 case OP_FCONV_TO_U2:
3792 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
3793 break;
3794 case OP_FCONV_TO_I4:
3795 case OP_FCONV_TO_I:
3796 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
3797 break;
3798 case OP_FCONV_TO_U4:
3799 case OP_FCONV_TO_U:
3800 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
3801 break;
3802 case OP_FCONV_TO_I8:
3803 case OP_FCONV_TO_U8:
3804 g_assert_not_reached ();
3805 /* Implemented as helper calls */
3806 break;
3807 case OP_LCONV_TO_R_UN:
3808 g_assert_not_reached ();
3809 /* Implemented as helper calls */
3810 break;
3811 case OP_LCONV_TO_OVF_I: {
3812 /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
3813 short int *o[5];
3814 s390_ltr (code, ins->sreg1, ins->sreg1);
3815 s390_jnl (code, 0); CODEPTR(code, o[0]);
3816 s390_ltr (code, ins->sreg2, ins->sreg2);
3817 s390_jnl (code, 0); CODEPTR(code, o[1]);
3818 s390_lhi (code, s390_r13, -1);
3819 s390_cr (code, ins->sreg2, s390_r13);
3820 s390_jnz (code, 0); CODEPTR(code, o[2]);
3821 if (ins->dreg != ins->sreg1)
3822 s390_lr (code, ins->dreg, ins->sreg1);
3823 s390_j (code, 0); CODEPTR(code, o[3]);
3824 PTRSLOT(code, o[0]);
3825 s390_ltr (code, ins->sreg2, ins->sreg2);
3826 s390_jz (code, 0); CODEPTR(code, o[4]);
3827 PTRSLOT(code, o[1]);
3828 PTRSLOT(code, o[2]);
3829 mono_add_patch_info (cfg, code - cfg->native_code,
3830 MONO_PATCH_INFO_EXC, "OverflowException");
3831 s390_brasl (code, s390_r14, 0);
3832 PTRSLOT(code, o[3]);
3833 PTRSLOT(code, o[4]);
3834 }
3835 break;
3836 case OP_SQRT: {
3837 s390_sqdbr (code, ins->dreg, ins->sreg1);
3838 }
3839 break;
3840 case OP_FADD: {
3841 CHECK_SRCDST_COM_F;
3842 s390_adbr (code, ins->dreg, src2);
3843 }
3844 break;
3845 case OP_FSUB: {
3846 CHECK_SRCDST_NCOM_F;
3847 s390_sdbr (code, ins->dreg, src2);
3848 }
3849 break;
3850 case OP_FMUL: {
3851 CHECK_SRCDST_COM_F;
3852 s390_mdbr (code, ins->dreg, src2);
3853 }
3854 break;
3855 case OP_FDIV: {
3856 CHECK_SRCDST_NCOM_F;
3857 s390_ddbr (code, ins->dreg, src2);
3858 }
3859 break;
3860 case OP_FNEG: {
3861 s390_lcdbr (code, ins->dreg, ins->sreg1);
3862 }
3863 break;
3864 case OP_FREM: {
3865 CHECK_SRCDST_NCOM_F;
3866 s390_didbr (code, ins->dreg, src2, 5, s390_f15);
3867 }
3868 break;
3869 case OP_FCOMPARE: {
3870 s390_cdbr (code, ins->sreg1, ins->sreg2);
3871 }
3872 break;
3873 case OP_FCEQ: {
3874 s390_cdbr (code, ins->sreg1, ins->sreg2);
3875 s390_lhi (code, ins->dreg, 1);
3876 s390_je (code, 4);
3877 s390_lhi (code, ins->dreg, 0);
3878 }
3879 break;
3880 case OP_FCLT: {
3881 s390_cdbr (code, ins->sreg1, ins->sreg2);
3882 s390_lhi (code, ins->dreg, 1);
3883 s390_jl (code, 4);
3884 s390_lhi (code, ins->dreg, 0);
3885 }
3886 break;
3887 case OP_FCLT_UN: {
3888 s390_cdbr (code, ins->sreg1, ins->sreg2);
3889 s390_lhi (code, ins->dreg, 1);
3890 s390_jlo (code, 4);
3891 s390_lhi (code, ins->dreg, 0);
3892 }
3893 break;
3894 case OP_FCGT: {
3895 s390_cdbr (code, ins->sreg1, ins->sreg2);
3896 s390_lhi (code, ins->dreg, 1);
3897 s390_jh (code, 4);
3898 s390_lhi (code, ins->dreg, 0);
3899 }
3900 break;
3901 case OP_FCGT_UN: {
3902 s390_cdbr (code, ins->sreg1, ins->sreg2);
3903 s390_lhi (code, ins->dreg, 1);
3904 s390_jho (code, 4);
3905 s390_lhi (code, ins->dreg, 0);
3906 }
3907 break;
3908 case OP_FBEQ:
3909 EMIT_COND_BRANCH (ins, S390_CC_EQ|S390_CC_OV);
3910 break;
3911 case OP_FBNE_UN:
3912 EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
3913 break;
3914 case OP_FBLT:
3915 EMIT_COND_BRANCH (ins, S390_CC_LT);
3916 break;
3917 case OP_FBLT_UN:
3918 EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
3919 break;
3920 case OP_FBGT:
3921 EMIT_COND_BRANCH (ins, S390_CC_GT);
3922 break;
3923 case OP_FBGT_UN:
3924 EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
3925 break;
3926 case OP_FBGE:
3927 EMIT_COND_BRANCH (ins, S390_CC_GE);
3928 break;
3929 case OP_FBGE_UN:
3930 EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
3931 break;
3932 case OP_FBLE:
3933 EMIT_COND_BRANCH (ins, S390_CC_LE);
3934 break;
3935 case OP_FBLE_UN:
3936 EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
3937 break;
3938 case CEE_CKFINITE: {
3939 short *o;
3940 s390_lhi (code, s390_r13, 0x7f);
3941 s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
3942 s390_jz (code, 0); CODEPTR(code, o);
3943 mono_add_patch_info (cfg, code - cfg->native_code,
3944 MONO_PATCH_INFO_EXC, "ArithmeticException");
3945 s390_brasl (code, s390_r14,0);
3946 PTRSLOT(code, o);
3947 }
3948 break;
3949 case OP_S390_MOVE: {
3950 if (ins->unused > 0) {
3951 if (ins->unused <= 256) {
3952 s390_mvc (code, ins->unused, ins->dreg,
3953 ins->inst_offset, ins->sreg1, ins->inst_imm);
3954 } else {
3955 s390_lr (code, s390_r0, ins->dreg);
3956 if (s390_is_imm16 (ins->inst_offset)) {
3957 s390_ahi (code, s390_r0, ins->inst_offset);
3958 } else {
3959 s390_basr (code, s390_r13, 0);
3960 s390_j (code, 4);
3961 s390_word (code, ins->inst_offset);
3962 s390_a (code, s390_r0, 0, s390_r13, 4);
3963 }
3964 s390_lr (code, s390_r14, s390_r12);
3965 s390_lr (code, s390_r12, ins->sreg1);
3966 if (s390_is_imm16 (ins->inst_imm)) {
3967 s390_ahi (code, s390_r12, ins->inst_imm);
3968 } else {
3969 s390_basr (code, s390_r13, 0);
3970 s390_j (code, 4);
3971 s390_word (code, ins->inst_imm);
3972 s390_a (code, s390_r12, 0, s390_r13, 4);
3973 }
3974 s390_lr (code, s390_r1, ins->sreg1);
3975 s390_lr (code, s390_r13, s390_r1);
3976 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
3977 s390_jo (code, -2);
3978 s390_lr (code, s390_r12, s390_r14);
3979 }
3980 }
3981 }
3982 break;
3983 case OP_ATOMIC_ADD_I4: {
3984 s390_lr (code, s390_r1, ins->sreg2);
3985 s390_l (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3986 s390_a (code, s390_r1, 0, ins->inst_basereg, ins->inst_offset);
3987 s390_cs (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
3988 s390_jnz (code, -7);
3989 s390_lr (code, ins->dreg, s390_r1);
3990 }
3991 break;
3992 case OP_ATOMIC_ADD_NEW_I4: {
3993 s390_lr (code, s390_r1, ins->sreg2);
3994 s390_l (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3995 s390_a (code, s390_r1, 0, ins->inst_basereg, ins->inst_offset);
3996 s390_cs (code, s390_r0, s390_r1, ins->inst_basereg, ins->inst_offset);
3997 s390_jnz (code, -7);
3998 s390_lr (code, ins->dreg, s390_r1);
3999 }
4000 break;
4001 case OP_ATOMIC_EXCHANGE_I4: {
4002 s390_l (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
4003 s390_cs (code, s390_r0, ins->sreg2, ins->inst_basereg, ins->inst_offset);
4004 s390_jnz (code, -4);
4005 s390_lr (code, ins->dreg, s390_r0);
4006 }
4007 break;
4008 case OP_S390_BKCHAIN: {
4009 s390_lr (code, ins->dreg, ins->sreg1);
4010 if (s390_is_imm16 (cfg->stack_offset)) {
4011 s390_ahi (code, ins->dreg, cfg->stack_offset);
4012 } else {
4013 s390_basr (code, s390_r13, 0);
4014 s390_j (code, 6);
4015 s390_word (code, cfg->stack_offset);
4016 s390_a (code, ins->dreg, 0, s390_r13, 4);
4017 }
4018 }
4019 case OP_MEMORY_BARRIER: {
4020 }
4021 break;
4022 default:
4023 g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
4024 g_assert_not_reached ();
4025 }
4026
4027 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
4028 g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %d)",
4029 mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
4030 g_assert_not_reached ();
4031 }
4032
4033 cpos += max_len;
4034
4035 last_ins = ins;
4036 last_offset = offset;
4037
4038 ins = ins->next;
4039 }
4040
4041 cfg->code_len = code - cfg->native_code;
4042 }
4043
4044 /*========================= End of Function ========================*/
4045
4046 /*------------------------------------------------------------------*/
4047 /* */
4048 /* Name - mono_arch_register_lowlevel_calls */
4049 /* */
4050 /* Function - Register routines to help with --trace operation. */
4051 /* */
4052 /*------------------------------------------------------------------*/
4053
4054 void
4055 mono_arch_register_lowlevel_calls (void)
4056 {
4057 mono_register_jit_icall (mono_arch_break, "mono_arch_break", NULL, TRUE);
4058 mono_register_jit_icall (mono_arch_get_lmf_addr, "mono_arch_get_lmf_addr", NULL, TRUE);
4059 }
4060
4061 /*========================= End of Function ========================*/
4062
4063 /*------------------------------------------------------------------*/
4064 /* */
4065 /* Name - mono_arch_patch_code */
4066 /* */
4067 /* Function - Process the patch data created during the */
4068 /* instruction build process. This resolves jumps, */
4069 /* calls, variables etc. */
4070 /* */
4071 /*------------------------------------------------------------------*/
4072
4073 static void
4074 mono_arch_break(void) {
4075 }
4076
4077 /*========================= End of Function ========================*/
4078
4079 /*------------------------------------------------------------------*/
4080 /* */
4081 /* Name - mono_arch_patch_code */
4082 /* */
4083 /* Function - Process the patch data created during the */
4084 /* instruction build process. This resolves jumps, */
4085 /* calls, variables etc. */
4086 /* */
4087 /*------------------------------------------------------------------*/
4088
4089 void
4090 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain,
4091 guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4092 {
4093 MonoJumpInfo *patch_info;
4094
4095 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4096 unsigned char *ip = patch_info->ip.i + code;
4097 gconstpointer target = NULL;
4098
4099 target = mono_resolve_patch_target (method, domain, code,
4100 patch_info, run_cctors);
4101
4102 switch (patch_info->type) {
4103 case MONO_PATCH_INFO_IP:
4104 case MONO_PATCH_INFO_EXC_NAME:
4105 case MONO_PATCH_INFO_LDSTR:
4106 case MONO_PATCH_INFO_TYPE_FROM_HANDLE:
4107 case MONO_PATCH_INFO_LDTOKEN:
4108 case MONO_PATCH_INFO_EXC:
4109 continue;
4110 case MONO_PATCH_INFO_SWITCH:
4111 /*----------------------------------*/
4112 /* ip points at the basr r13,0/j +4 */
4113 /* instruction the vtable value */
4114 /* follows this (i.e. ip+6) */
4115 /*----------------------------------*/
4116 *((gconstpointer *)(ip+6)) = target;
4117 target = NULL;
4118 continue;
4119 case MONO_PATCH_INFO_METHODCONST:
4120 case MONO_PATCH_INFO_CLASS:
4121 case MONO_PATCH_INFO_IMAGE:
4122 case MONO_PATCH_INFO_FIELD:
4123 case MONO_PATCH_INFO_IID:
4124 target = S390_RELATIVE(target, ip);
4125 continue;
4126 case MONO_PATCH_INFO_R4:
4127 case MONO_PATCH_INFO_R8:
4128 case MONO_PATCH_INFO_METHOD_REL:
4129 g_assert_not_reached ();
4130 continue;
4131 default:
4132 target = S390_RELATIVE(target, ip);
4133 ip += 2;
4134 }
4135 s390_patch (ip, (guint32) target);
4136 }
4137 }
4138
4139 /*========================= End of Function ========================*/
4140
4141 /*------------------------------------------------------------------*/
4142 /* */
4143 /* Name - emit_load_volatile_registers */
4144 /* */
4145 /* Function - Create the instruction sequence for loading the */
4146 /* parameter registers for use with the 'tail' op. */
4147 /* */
4148 /* The register loading operations performed here */
4149 /* are the mirror of the store operations performed */
4150 /* in mono_arch_emit_prolog and need to be kept in */
4151 /* synchronization with it. */
4152 /* */
4153 /*------------------------------------------------------------------*/
4154
4155 guint8 *
4156 emit_load_volatile_registers(guint8 * code, MonoCompile *cfg)
4157 {
4158 MonoMethod *method = cfg->method;
4159 MonoMethodSignature *sig;
4160 MonoInst *inst;
4161 int pos, i;
4162 CallInfo *cinfo;
4163 size_data sz;
4164
4165 sig = mono_method_signature (method);
4166 pos = 0;
4167
4168 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4169
4170 if (cinfo->struct_ret) {
4171 ArgInfo *ainfo = &cinfo->ret;
4172 inst = cfg->ret;
4173 s390_l (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4174 }
4175
4176 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4177 ArgInfo *ainfo = cinfo->args + i;
4178 inst = cfg->varinfo [pos];
4179
4180 if (inst->opcode == OP_REGVAR) {
4181 if (ainfo->regtype == RegTypeGeneral)
4182 s390_lr (code, ainfo->reg, inst->dreg);
4183 else if (ainfo->regtype == RegTypeFP) {
4184 if (inst->dreg != ainfo->reg) {
4185 if (ainfo->size == 4) {
4186 s390_ldebr (code, ainfo->reg, inst->dreg);
4187 } else {
4188 s390_ldr (code, ainfo->reg, inst->dreg);
4189 }
4190 }
4191 }
4192 else if (ainfo->regtype == RegTypeBase) {
4193 } else
4194 g_assert_not_reached ();
4195 } else {
4196 if (ainfo->regtype == RegTypeGeneral) {
4197 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4198 g_assert_not_reached();
4199 switch (ainfo->size) {
4200 case 1:
4201 s390_ic (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4202 break;
4203 case 2:
4204 s390_lh (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4205 break;
4206 case 8:
4207 s390_lm (code, ainfo->reg, ainfo->reg + 1,
4208 inst->inst_basereg, inst->inst_offset);
4209 break;
4210 default:
4211 s390_l (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4212 }
4213 } else if (ainfo->regtype == RegTypeBase) {
4214 } else if (ainfo->regtype == RegTypeFP) {
4215 if (ainfo->size == 8)
4216 s390_ld (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4217 else if (ainfo->size == 4)
4218 s390_le (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4219 else
4220 g_assert_not_reached ();
4221 } else if (ainfo->regtype == RegTypeStructByVal) {
4222 if (ainfo->reg != STK_BASE) {
4223 switch (ainfo->size) {
4224 case 1:
4225 s390_ic (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4226 break;
4227 case 2:
4228 s390_lh (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4229 break;
4230 case 4:
4231 s390_l (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4232 break;
4233 case 8:
4234 s390_lm (code, ainfo->reg, ainfo->reg+1, inst->inst_basereg, inst->inst_offset);
4235 break;
4236 }
4237 }
4238 } else if (ainfo->regtype == RegTypeStructByAddr) {
4239 if (ainfo->reg != STK_BASE) {
4240 s390_l (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4241 }
4242 } else
4243 g_assert_not_reached ();
4244 }
4245 pos++;
4246 }
4247
4248 g_free (cinfo);
4249
4250 return code;
4251 }
4252
4253 /*========================= End of Function ========================*/
4254
4255 /*------------------------------------------------------------------*/
4256 /* */
4257 /* Name - mono_arch_emit_prolog */
4258 /* */
4259 /* Function - Create the instruction sequence for a function */
4260 /* prolog. */
4261 /* */
4262 /*------------------------------------------------------------------*/
4263
4264 guint8 *
4265 mono_arch_emit_prolog (MonoCompile *cfg)
4266 {
4267 MonoMethod *method = cfg->method;
4268 MonoBasicBlock *bb;
4269 MonoMethodSignature *sig;
4270 MonoInst *inst;
4271 int alloc_size, pos, max_offset, i;
4272 guint8 *code;
4273 CallInfo *cinfo;
4274 size_data sz;
4275 int tracing = 0;
4276 int lmfOffset; \
4277
4278 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
4279 tracing = 1;
4280
4281 cfg->code_size = 512;
4282 cfg->native_code = code = g_malloc (cfg->code_size);
4283
4284 s390_stm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4285
4286 if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
4287 cfg->used_int_regs |= 1 << 11;
4288 }
4289
4290 alloc_size = cfg->stack_offset;
4291
4292 cfg->stack_usage = alloc_size;
4293 s390_lr (code, s390_r11, STK_BASE);
4294 if (s390_is_uimm16 (alloc_size)) {
4295 s390_ahi (code, STK_BASE, -alloc_size);
4296 } else {
4297 int stackSize = alloc_size;
4298 while (stackSize > 32767) {
4299 s390_ahi (code, STK_BASE, -32767);
4300 stackSize -= 32767;
4301 }
4302 s390_ahi (code, STK_BASE, -stackSize);
4303 }
4304 s390_st (code, s390_r11, 0, STK_BASE, 0);
4305
4306 if (cfg->frame_reg != STK_BASE)
4307 s390_lr (code, s390_r11, STK_BASE);
4308
4309 /* compute max_offset in order to use short forward jumps
4310 * we always do it on s390 because the immediate displacement
4311 * for jumps is too small
4312 */
4313 max_offset = 0;
4314 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
4315 MonoInst *ins = bb->code;
4316 bb->max_offset = max_offset;
4317
4318 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
4319 max_offset += 6;
4320
4321 while (ins) {
4322 max_offset += ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
4323 ins = ins->next;
4324 }
4325 }
4326
4327 /* load arguments allocated to register from the stack */
4328 sig = mono_method_signature (method);
4329 pos = 0;
4330
4331 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4332
4333 if (cinfo->struct_ret) {
4334 ArgInfo *ainfo = &cinfo->ret;
4335 inst = cfg->ret;
4336 inst->unused = ainfo->vtsize;
4337 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4338 }
4339
4340 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4341 ArgInfo *ainfo = cinfo->args + i;
4342 inst = cfg->varinfo [pos];
4343
4344 if (inst->opcode == OP_REGVAR) {
4345 if (ainfo->regtype == RegTypeGeneral)
4346 s390_lr (code, inst->dreg, ainfo->reg);
4347 else if (ainfo->regtype == RegTypeFP) {
4348 if (inst->dreg != ainfo->reg) {
4349 if (ainfo->size == 4) {
4350 s390_ledbr (code, inst->dreg, ainfo->reg);
4351 } else {
4352 s390_ldr (code, inst->dreg, ainfo->reg);
4353 }
4354 }
4355 }
4356 else if (ainfo->regtype == RegTypeBase) {
4357 s390_lr (code, s390_r13, STK_BASE);
4358 s390_ahi (code, s390_r13, alloc_size);
4359 s390_l (code, inst->dreg, 0, s390_r13, ainfo->offset);
4360 } else
4361 g_assert_not_reached ();
4362
4363 if (cfg->verbose_level > 2)
4364 g_print ("Argument %d assigned to register %s\n",
4365 pos, mono_arch_regname (inst->dreg));
4366 } else {
4367 if (ainfo->regtype == RegTypeGeneral) {
4368 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4369 g_assert_not_reached();
4370 switch (ainfo->size) {
4371 case 1:
4372 s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4373 break;
4374 case 2:
4375 s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4376 break;
4377 case 8:
4378 s390_stm (code, ainfo->reg, ainfo->reg + 1,
4379 inst->inst_basereg, inst->inst_offset);
4380 break;
4381 default:
4382 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4383 }
4384 } else if (ainfo->regtype == RegTypeBase) {
4385 } else if (ainfo->regtype == RegTypeFP) {
4386 if (ainfo->size == 8)
4387 s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4388 else if (ainfo->size == 4)
4389 s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4390 else
4391 g_assert_not_reached ();
4392 } else if (ainfo->regtype == RegTypeStructByVal) {
4393 int doffset = inst->inst_offset;
4394 int reg;
4395 if (ainfo->reg != STK_BASE)
4396 reg = ainfo->reg;
4397 else {
4398 reg = s390_r0;
4399 s390_lr (code, s390_r13, STK_BASE);
4400 s390_ahi (code, s390_r13, alloc_size);
4401 }
4402 switch (ainfo->size) {
4403 case 1:
4404 if (ainfo->reg == STK_BASE)
4405 s390_ic (code, reg, 0, s390_r13, ainfo->offset+3);
4406 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
4407 break;
4408 case 2:
4409 if (ainfo->reg == STK_BASE)
4410 s390_lh (code, reg, 0, s390_r13, ainfo->offset+2);
4411 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
4412 break;
4413 case 4:
4414 if (ainfo->reg == STK_BASE)
4415 s390_l (code, reg, 0, s390_r13, ainfo->offset);
4416 s390_st (code, reg, 0, inst->inst_basereg, doffset);
4417 break;
4418 case 8:
4419 if (ainfo->reg == STK_BASE)
4420 s390_lm (code, s390_r0, s390_r1, s390_r13, ainfo->offset);
4421 s390_stm (code, reg, reg+1, inst->inst_basereg, doffset);
4422 break;
4423 }
4424 } else if (ainfo->regtype == RegTypeStructByAddr) {
4425 if (ainfo->reg != STK_BASE)
4426 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4427 } else
4428 g_assert_not_reached ();
4429 }
4430 pos++;
4431 }
4432
4433 if (method->save_lmf) {
4434 /*---------------------------------------------------------------*/
4435 /* we build the MonoLMF structure on the stack - see mini-s390.h */
4436 /*---------------------------------------------------------------*/
4437 lmfOffset = alloc_size - sizeof(MonoLMF);
4438
4439 s390_lr (code, s390_r13, cfg->frame_reg);
4440 if (s390_is_uimm16(lmfOffset))
4441 s390_ahi (code, s390_r13, lmfOffset);
4442 else {
4443 s390_basr (code, s390_r14, 0);
4444 s390_j (code, 4);
4445 s390_word (code, lmfOffset);
4446 s390_a (code, s390_r13, 0, s390_r14, 4);
4447 }
4448
4449 /*---------------------------------------------------------------*/
4450 /* Preserve the parameter registers while we fix up the lmf */
4451 /*---------------------------------------------------------------*/
4452 s390_stm (code, s390_r2, s390_r6, s390_r13,
4453 G_STRUCT_OFFSET(MonoLMF, pregs[0]));
4454
4455 /*---------------------------------------------------------------*/
4456 /* On return from this call r2 have the address of the &lmf */
4457 /*---------------------------------------------------------------*/
4458 mono_add_patch_info (cfg, code - cfg->native_code,
4459 MONO_PATCH_INFO_INTERNAL_METHOD,
4460 (gpointer)"mono_get_lmf_addr");
4461 s390_brasl (code, s390_r14, 0);
4462
4463 /*---------------------------------------------------------------*/
4464 /* Set lmf.lmf_addr = jit_tls->lmf */
4465 /*---------------------------------------------------------------*/
4466 s390_st (code, s390_r2, 0, s390_r13,
4467 G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4468
4469 /*---------------------------------------------------------------*/
4470 /* Get current lmf */
4471 /*---------------------------------------------------------------*/
4472 s390_l (code, s390_r0, 0, s390_r2, 0);
4473
4474 /*---------------------------------------------------------------*/
4475 /* Set our lmf as the current lmf */
4476 /*---------------------------------------------------------------*/
4477 s390_st (code, s390_r13, 0, s390_r2, 0);
4478
4479 /*---------------------------------------------------------------*/
4480 /* Have our lmf.previous_lmf point to the last lmf */
4481 /*---------------------------------------------------------------*/
4482 s390_st (code, s390_r0, 0, s390_r13,
4483 G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4484
4485 /*---------------------------------------------------------------*/
4486 /* save method info */
4487 /*---------------------------------------------------------------*/
4488 s390_basr (code, s390_r1, 0);
4489 s390_j (code, 4);
4490 s390_word (code, method);
4491 s390_l (code, s390_r1, 0, s390_r1, 4);
4492 s390_st (code, s390_r1, 0, s390_r13,
4493 G_STRUCT_OFFSET(MonoLMF, method));
4494
4495 /*---------------------------------------------------------------*/
4496 /* save the current IP */
4497 /*---------------------------------------------------------------*/
4498 s390_st (code, STK_BASE, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
4499 s390_basr (code, s390_r1, 0);
4500 s390_la (code, s390_r1, 0, s390_r1, 0);
4501 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
4502
4503 /*---------------------------------------------------------------*/
4504 /* Save general and floating point registers */
4505 /*---------------------------------------------------------------*/
4506 s390_stm (code, s390_r2, s390_r12, s390_r13,
4507 G_STRUCT_OFFSET(MonoLMF, gregs[2]));
4508 for (i = 0; i < 16; i++) {
4509 s390_std (code, i, 0, s390_r13,
4510 G_STRUCT_OFFSET(MonoLMF, fregs[i]));
4511 }
4512
4513 /*---------------------------------------------------------------*/
4514 /* Restore the parameter registers now that we've set up the lmf */
4515 /*---------------------------------------------------------------*/
4516 s390_lm (code, s390_r2, s390_r6, s390_r13,
4517 G_STRUCT_OFFSET(MonoLMF, pregs[0]));
4518 }
4519
4520 if (tracing)
4521 code = mono_arch_instrument_prolog(cfg, enter_method, code, TRUE);
4522
4523 cfg->code_len = code - cfg->native_code;
4524 g_free (cinfo);
4525
4526 return code;
4527 }
4528
4529 /*========================= End of Function ========================*/
4530
4531 /*------------------------------------------------------------------*/
4532 /* */
4533 /* Name - mono_arch_emit_epilog */
4534 /* */
4535 /* Function - Emit the instructions for a function epilog. */
4536 /* */
4537 /*------------------------------------------------------------------*/
4538
4539 void
4540 mono_arch_emit_epilog (MonoCompile *cfg)
4541 {
4542 MonoMethod *method = cfg->method;
4543 int tracing = 0;
4544 guint8 *code;
4545 int max_epilog_size = 96;
4546
4547 if (cfg->method->save_lmf)
4548 max_epilog_size += 128;
4549
4550 if (mono_jit_trace_calls != NULL)
4551 max_epilog_size += 128;
4552
4553 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
4554 max_epilog_size += 128;
4555
4556 while ((cfg->code_len + max_epilog_size) > (cfg->code_size - 16)) {
4557 cfg->code_size *= 2;
4558 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
4559 mono_jit_stats.code_reallocs++;
4560 }
4561
4562 code = cfg->native_code + cfg->code_len;
4563
4564 if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
4565 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
4566 tracing = 1;
4567 }
4568
4569 if (method->save_lmf)
4570 restoreLMF(code, cfg->frame_reg, cfg->stack_usage);
4571
4572 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
4573 s390_l (code, STK_BASE, 0, STK_BASE, 0);
4574 else
4575 code = backUpStackPtr(cfg, code, STK_BASE);
4576
4577 s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4578 s390_br (code, s390_r14);
4579
4580 cfg->code_len = code - cfg->native_code;
4581
4582 g_assert (cfg->code_len < cfg->code_size);
4583
4584 }
4585
4586 /*========================= End of Function ========================*/
4587
4588 /*------------------------------------------------------------------*/
4589 /* */
4590 /* Name - mono_arch_emit_exceptions */
4591 /* */
4592 /* Function - Emit the blocks to handle exception conditions. */
4593 /* */
4594 /*------------------------------------------------------------------*/
4595
4596 void
4597 mono_arch_emit_exceptions (MonoCompile *cfg)
4598 {
4599 MonoJumpInfo *patch_info;
4600 guint8 *code;
4601 int nThrows = 0,
4602 exc_count = 0,
4603 iExc;
4604 guint32 code_size;
4605 MonoClass *exc_classes [MAX_EXC];
4606 guint8 *exc_throw_start [MAX_EXC],
4607 *exc_throw_end [MAX_EXC];
4608
4609 for (patch_info = cfg->patch_info;
4610 patch_info;
4611 patch_info = patch_info->next) {
4612 if (patch_info->type == MONO_PATCH_INFO_EXC)
4613 exc_count++;
4614 }
4615
4616 code_size = exc_count * 26;
4617
4618 while ((cfg->code_len + code_size) > (cfg->code_size - 16)) {
4619 cfg->code_size *= 2;
4620 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
4621 mono_jit_stats.code_reallocs++;
4622 }
4623
4624 code = cfg->native_code + cfg->code_len;
4625
4626 /*---------------------------------------------------------------------*/
4627 /* Add code to raise exceptions */
4628 /*---------------------------------------------------------------------*/
4629 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4630 switch (patch_info->type) {
4631 case MONO_PATCH_INFO_EXC: {
4632 guint8 *ip = patch_info->ip.i + cfg->native_code;
4633 MonoClass *exc_class;
4634 guint32 throw_ip;
4635
4636 /*-----------------------------------------------------*/
4637 /* Patch the branch in epilog to come here */
4638 /*-----------------------------------------------------*/
4639 s390_patch (ip + 2, (guint32) (S390_RELATIVE(code,ip)));
4640
4641 exc_class = mono_class_from_name (mono_defaults.corlib,
4642 "System",
4643 patch_info->data.name);
4644 g_assert (exc_class);
4645 throw_ip = patch_info->ip.i;
4646
4647 for (iExc = 0; iExc < nThrows; ++iExc)
4648 if (exc_classes [iExc] == exc_class)
4649 break;
4650
4651 if (iExc < nThrows) {
4652 s390_jcl (code, S390_CC_UN, (guint32) exc_throw_start [iExc]);
4653 patch_info->type = MONO_PATCH_INFO_NONE;
4654 } else {
4655
4656 if (nThrows < MAX_EXC) {
4657 exc_classes [nThrows] = exc_class;
4658 exc_throw_start [nThrows] = code;
4659 }
4660
4661 /*---------------------------------------------*/
4662 /* Patch the parameter passed to the handler */
4663 /*---------------------------------------------*/
4664 s390_basr (code, s390_r13, 0);
4665 s390_j (code, 4);
4666 s390_word (code, patch_info->data.target);
4667 /*---------------------------------------------*/
4668 /* Load return address & parameter register */
4669 /*---------------------------------------------*/
4670 s390_larl (code, s390_r14, S390_RELATIVE((patch_info->ip.i +
4671 cfg->native_code + 8), code));
4672 s390_l (code, s390_r2, 0, s390_r13, 4);
4673 /*---------------------------------------------*/
4674 /* Reuse the current patch to set the jump */
4675 /*---------------------------------------------*/
4676 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
4677 patch_info->data.name = "mono_arch_throw_exception_by_name";
4678 patch_info->ip.i = code - cfg->native_code;
4679 s390_jcl (code, S390_CC_UN, 0);
4680 }
4681 break;
4682 }
4683 default:
4684 /* do nothing */
4685 break;
4686 }
4687 }
4688
4689 cfg->code_len = code - cfg->native_code;
4690
4691 g_assert (cfg->code_len < cfg->code_size);
4692
4693 }
4694
4695 /*========================= End of Function ========================*/
4696
4697 /*------------------------------------------------------------------*/
4698 /* */
4699 /* Name - mono_arch_setup_jit_tls_data */
4700 /* */
4701 /* Function - Setup the JIT's Thread Level Specific Data. */
4702 /* */
4703 /*------------------------------------------------------------------*/
4704
4705 void
4706 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
4707 {
4708
4709 if (!tls_offset_inited) {
4710 tls_offset_inited = TRUE;
4711
4712 #if HAVE_KW_THREAD
4713 # if 0
4714 __asm__ ("\tear\t%r1,0\n"
4715 "\tlr\t%0,%3\n"
4716 "\tsr\t%0,%r1\n"
4717 "\tlr\t%1,%4\n"
4718 "\tsr\t%1,%r1\n"
4719 "\tlr\t%2,%5\n"
4720 "\tsr\t%2,%r1\n"
4721 : "=r" (appdomain_tls_offset),
4722 "=r" (thread_tls_offset),
4723 "=r" (lmf_tls_offset)
4724 : "r" (&tls_appdomain),
4725 "r" (&tls_current_object),
4726 "r" (&mono_lmf_addr)
4727 : "1", "cc");
4728 # endif
4729 #endif
4730 }
4731
4732 if (!lmf_addr_key_inited) {
4733 lmf_addr_key_inited = TRUE;
4734 pthread_key_create (&lmf_addr_key, NULL);
4735 }
4736 pthread_setspecific (lmf_addr_key, &tls->lmf);
4737
4738 }
4739
4740 /*========================= End of Function ========================*/
4741
4742 /*------------------------------------------------------------------*/
4743 /* */
4744 /* Name - mono_arch_free_jit_tls_data */
4745 /* */
4746 /* Function - Free tls data. */
4747 /* */
4748 /*------------------------------------------------------------------*/
4749
4750 void
4751 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
4752 {
4753
4754 }
4755
4756 /*========================= End of Function ========================*/
4757
4758 /*------------------------------------------------------------------*/
4759 /* */
4760 /* Name - mono_arch_emit_this_vret_args */
4761 /* */
4762 /* Function - */
4763 /* */
4764 /*------------------------------------------------------------------*/
4765
4766 void
4767 mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_reg, int this_type, int vt_reg)
4768 {
4769 int this_dreg = s390_r2;
4770
4771 if (vt_reg != -1)
4772 this_dreg = s390_r3;
4773
4774 /* add the this argument */
4775 if (this_reg != -1) {
4776 MonoInst *this;
4777 MONO_INST_NEW (cfg, this, OP_SETREG);
4778 this->type = this_type;
4779 this->sreg1 = this_reg;
4780 this->dreg = mono_regstate_next_int (cfg->rs);
4781 mono_bblock_add_inst (cfg->cbb, this);
4782 mono_call_inst_add_outarg_reg (cfg, inst, this->dreg, this_dreg, FALSE);
4783 }
4784
4785 if (vt_reg != -1) {
4786 MonoInst *vtarg;
4787 MONO_INST_NEW (cfg, vtarg, OP_SETREG);
4788 vtarg->type = STACK_MP;
4789 vtarg->sreg1 = vt_reg;
4790 vtarg->dreg = mono_regstate_next_int (cfg->rs);
4791 mono_bblock_add_inst (cfg->cbb, vtarg);
4792 mono_call_inst_add_outarg_reg (cfg, inst, vtarg->dreg, s390_r2, FALSE);
4793 }
4794 }
4795
4796 /*========================= End of Function ========================*/
4797
4798 /*------------------------------------------------------------------*/
4799 /* */
4800 /* Name - mono_arch_get_inst_for_method */
4801 /* */
4802 /* Function - Check for opcodes we can handle directly in */
4803 /* hardware. */
4804 /* */
4805 /*------------------------------------------------------------------*/
4806
4807 MonoInst*
4808 mono_arch_get_inst_for_method (MonoCompile *cfg, MonoMethod *cmethod,
4809 MonoMethodSignature *fsig, MonoInst **args)
4810 {
4811 MonoInst *ins = NULL;
4812
4813 if (cmethod->klass == mono_defaults.math_class) {
4814 if (strcmp (cmethod->name, "Sqrt") == 0) {
4815 MONO_INST_NEW (cfg, ins, OP_SQRT);
4816 ins->inst_i0 = args [0];
4817 }
4818 } else if (cmethod->klass == mono_defaults.thread_class &&
4819 strcmp (cmethod->name, "MemoryBarrier") == 0) {
4820 MONO_INST_NEW (cfg, ins, OP_MEMORY_BARRIER);
4821 } else if(cmethod->klass->image == mono_defaults.corlib &&
4822 (strcmp (cmethod->klass->name_space, "System.Threading") == 0) &&
4823 (strcmp (cmethod->klass->name, "Interlocked") == 0)) {
4824
4825 if (strcmp (cmethod->name, "Increment") == 0 &&
4826 fsig->params [0]->type == MONO_TYPE_I4) {
4827 MonoInst *ins_iconst;
4828
4829 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_NEW_I4);
4830 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
4831 ins_iconst->inst_c0 = 1;
4832
4833 ins->inst_i0 = args [0];
4834 ins->inst_i1 = ins_iconst;
4835 } else if (strcmp (cmethod->name, "Decrement") == 0 &&
4836 fsig->params [0]->type == MONO_TYPE_I4) {
4837 MonoInst *ins_iconst;
4838
4839 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_NEW_I4);
4840 MONO_INST_NEW (cfg, ins_iconst, OP_ICONST);
4841 ins_iconst->inst_c0 = -1;
4842
4843 ins->inst_i0 = args [0];
4844 ins->inst_i1 = ins_iconst;
4845 } else if (strcmp (cmethod->name, "Exchange") == 0 &&
4846 fsig->params [0]->type == MONO_TYPE_I4) {
4847 MONO_INST_NEW (cfg, ins, OP_ATOMIC_EXCHANGE_I4);
4848
4849 ins->inst_i0 = args [0];
4850 ins->inst_i1 = args [1];
4851 } else if (strcmp (cmethod->name, "Add") == 0 &&
4852 fsig->params [0]->type == MONO_TYPE_I4) {
4853 MONO_INST_NEW (cfg, ins, OP_ATOMIC_ADD_I4);
4854
4855 ins->inst_i0 = args [0];
4856 ins->inst_i1 = args [1];
4857 }
4858 }
4859 return ins;
4860 }
4861
4862 /*========================= End of Function ========================*/
4863
4864 /*------------------------------------------------------------------*/
4865 /* */
4866 /* Name - mono_arch_print_tree */
4867 /* */
4868 /* Function - Print platform-specific opcode details. */
4869 /* */
4870 /* Returns - 1 - opcode details have been printed */
4871 /* 0 - opcode details have not been printed */
4872 /* */
4873 /*------------------------------------------------------------------*/
4874
4875 gboolean
4876 mono_arch_print_tree (MonoInst *tree, int arity)
4877 {
4878 gboolean done;
4879
4880 switch (tree->opcode) {
4881 case OP_S390_LOADARG:
4882 case OP_S390_ARGREG:
4883 case OP_S390_ARGPTR:
4884 printf ("[0x%lx(%s)]", tree->inst_offset,
4885 mono_arch_regname (tree->inst_basereg));
4886 done = 1;
4887 break;
4888 case OP_S390_STKARG:
4889 printf ("[0x%lx(previous_frame)]",
4890 tree->inst_offset);
4891 done = 1;
4892 break;
4893 case OP_S390_MOVE:
4894 printf ("[0x%lx(%d,%s),0x%lx(%s)]",
4895 tree->inst_offset, tree->unused,
4896 mono_arch_regname(tree->dreg), tree->inst_imm,
4897 mono_arch_regname(tree->sreg1));
4898 done = 1;
4899 break;
4900 case OP_S390_SETF4RET:
4901 printf ("[f%ld,f%ld]",
4902 mono_arch_regname (tree->dreg),
4903 mono_arch_regname (tree->sreg1));
4904 done = 1;
4905 break;
4906 case OP_TLS_GET:
4907 printf ("[0x%lx(0x%lx,%s)]", tree->inst_offset,
4908 tree->inst_imm,
4909 mono_arch_regname (tree->sreg1));
4910 done = 1;
4911 break;
4912 case OP_S390_BKCHAIN:
4913 printf ("[previous_frame(%s)]",
4914 mono_arch_regname (tree->sreg1));
4915 done = 1;
4916 break;
4917 default:
4918 done = 0;
4919 }
4920 return (done);
4921 }
4922
4923 /*========================= End of Function ========================*/
4924
4925 /*------------------------------------------------------------------*/
4926 /* */
4927 /* Name - mono_arch_regalloc_cost */
4928 /* */
4929 /* Function - Determine the cost, in the number of memory */
4930 /* references, of the action of allocating the var- */
4931 /* iable VMV into a register during global register */
4932 /* allocation. */
4933 /* */
4934 /* Returns - Cost */
4935 /* */
4936 /*------------------------------------------------------------------*/
4937
4938 guint32
4939 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
4940 {
4941 /* FIXME: */
4942 return 2;
4943 }
4944
4945 /*========================= End of Function ========================*/
4946
4947 /*------------------------------------------------------------------*/
4948 /* */
4949 /* Name - mono_arch_get_domain_intrinsic */
4950 /* */
4951 /* Function - */
4952 /* */
4953 /* Returns - */
4954 /* */
4955 /*------------------------------------------------------------------*/
4956
4957 MonoInst *
4958 mono_arch_get_domain_intrinsic (MonoCompile* cfg)
4959 {
4960 MonoInst *ins;
4961
4962 if (appdomain_tls_offset == -1)
4963 return NULL;
4964
4965 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
4966 ins->inst_offset = appdomain_tls_offset;
4967 return (ins);
4968 }
4969
4970 /*========================= End of Function ========================*/
4971
4972 /*------------------------------------------------------------------*/
4973 /* */
4974 /* Name - mono_arch_get_thread_intrinsic */
4975 /* */
4976 /* Function - */
4977 /* */
4978 /* Returns - */
4979 /* */
4980 /*------------------------------------------------------------------*/
4981
4982 MonoInst *
4983 mono_arch_get_thread_intrinsic (MonoCompile* cfg)
4984 {
4985 MonoInst *ins;
4986
4987 if (thread_tls_offset == -1)
4988 return NULL;
4989
4990 MONO_INST_NEW (cfg, ins, OP_TLS_GET);
4991 ins->inst_offset = thread_tls_offset;
4992 return (ins);
4993 }
4994
4995 /*========================= End of Function ========================*/
4996
4997 /*------------------------------------------------------------------*/
4998 /* */
4999 /* Name - mono_arch_flush_register_windows */
5000 /* */
5001 /* Function - */
5002 /* */
5003 /* Returns - */
5004 /* */
5005 /*------------------------------------------------------------------*/
5006
5007 void
5008 mono_arch_flush_register_windows (void)
5009 {
5010 }
5011
5012 /*========================= End of Function ========================*/
5013
5014 /*------------------------------------------------------------------*/
5015 /* */
5016 /* Name - mono_arch_get_lmf_addr */
5017 /* */
5018 /* Function - */
5019 /* */
5020 /* Returns - */
5021 /* */
5022 /*------------------------------------------------------------------*/
5023
5024 gpointer
5025 mono_arch_get_lmf_addr (void)
5026 {
5027 return pthread_getspecific (lmf_addr_key);
5028 }
5029
5030
5031 /*========================= End of Function ========================*/
5032
5033 /*------------------------------------------------------------------*/
5034 /* */
5035 /* Name - mono_arch_get_patch_offset */
5036 /* */
5037 /* Function - Dummy entry point until s390x supports aot. */
5038 /* */
5039 /* Returns - Offset for patch. */
5040 /* */
5041 /*------------------------------------------------------------------*/
5042
5043 guint32
5044 mono_arch_get_patch_offset (guint8 *code)
5045 {
5046 return 0;
5047 }
5048
5049 /*========================= End of Function ========================*/
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