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[mono-project.git] / mono / mini / mini-s390x.c
blobc345e7a6df1821d01ca7207da757778c2edfb8c8
1 /*------------------------------------------------------------------*/
2 /* */
3 /* Name - mini-s390.c */
4 /* */
5 /* Function - S/390 backend for the Mono code generator. */
6 /* */
7 /* Name - Neale Ferguson (Neale.Ferguson@SoftwareAG-usa.com) */
8 /* */
9 /* Date - January, 2004 */
10 /* */
11 /* Derivation - From mini-x86 & mini-ppc by - */
12 /* Paolo Molaro (lupus@ximian.com) */
13 /* Dietmar Maurer (dietmar@ximian.com) */
14 /* */
15 /*------------------------------------------------------------------*/
16
17 /*------------------------------------------------------------------*/
18 /* D e f i n e s */
19 /*------------------------------------------------------------------*/
20
21 #define NOT_IMPLEMENTED(x) \
22 g_error ("FIXME: %s is not yet implemented. (trampoline)", x);
23
24 #define EMIT_COND_BRANCH(ins,cond) \
25 { \
26 if (ins->flags & MONO_INST_BRLABEL) { \
27 if (ins->inst_i0->inst_c0) { \
28 int displace; \
29 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2; \
30 if (s390_is_uimm16(displace)) { \
31 s390_brc (code, cond, displace); \
32 } else { \
33 s390_jcl (code, cond, displace); \
34 } \
35 } else { \
36 mono_add_patch_info (cfg, code - cfg->native_code, \
37 MONO_PATCH_INFO_LABEL, ins->inst_i0); \
38 s390_jcl (code, cond, 0); \
39 } \
40 } else { \
41 if (ins->inst_true_bb->native_offset) { \
42 int displace; \
43 displace = ((cfg->native_code + \
44 ins->inst_true_bb->native_offset) - code) / 2; \
45 if (s390_is_uimm16(displace)) { \
46 s390_brc (code, cond, displace); \
47 } else { \
48 s390_jcl (code, cond, displace); \
49 } \
50 } else { \
51 mono_add_patch_info (cfg, code - cfg->native_code, \
52 MONO_PATCH_INFO_BB, ins->inst_true_bb); \
53 s390_jcl (code, cond, 0); \
54 } \
55 } \
56 }
57
58 #define EMIT_UNCOND_BRANCH(ins) \
59 { \
60 if (ins->flags & MONO_INST_BRLABEL) { \
61 if (ins->inst_i0->inst_c0) { \
62 int displace; \
63 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2; \
64 if (s390_is_uimm16(displace)) { \
65 s390_brc (code, S390_CC_UN, displace); \
66 } else { \
67 s390_jcl (code, S390_CC_UN, displace); \
68 } \
69 } else { \
70 mono_add_patch_info (cfg, code - cfg->native_code, \
71 MONO_PATCH_INFO_LABEL, ins->inst_i0); \
72 s390_jcl (code, S390_CC_UN, 0); \
73 } \
74 } else { \
75 if (ins->inst_target_bb->native_offset) { \
76 int displace; \
77 displace = ((cfg->native_code + \
78 ins->inst_target_bb->native_offset) - code) / 2; \
79 if (s390_is_uimm16(displace)) { \
80 s390_brc (code, S390_CC_UN, displace); \
81 } else { \
82 s390_jcl (code, S390_CC_UN, displace); \
83 } \
84 } else { \
85 mono_add_patch_info (cfg, code - cfg->native_code, \
86 MONO_PATCH_INFO_BB, ins->inst_target_bb); \
87 s390_jcl (code, S390_CC_UN, 0); \
88 } \
89 } \
90 }
91
92 #define EMIT_COND_SYSTEM_EXCEPTION(cond,exc_name) \
93 do { \
94 mono_add_patch_info (cfg, code - cfg->native_code, \
95 MONO_PATCH_INFO_EXC, exc_name); \
96 s390_jcl (code, cond, 0); \
97 } while (0);
98
99 #undef DEBUG
100 #define DEBUG(a) if (cfg->verbose_level > 1) a
101 #define reg_is_freeable(r) ((r) >= 3 && (r) <= 10)
102 #define freg_is_freeable(r) ((r) >= 1 && (r) <= 14)
103
104 /*----------------------------------------*/
105 /* use s390_r3-s390_r10 as temp registers */
106 /*----------------------------------------*/
107 #define S390_CALLER_REGS (0x03f8)
108
109 /*----------------------------------------*/
110 /* use s390_f2-s390_f14 as temp registers */
111 /*----------------------------------------*/
112 #define S390_CALLER_FREGS (0x73f8)
113
114 #define S390_TRACE_STACK_SIZE (5*sizeof(gint64)+3*sizeof(gdouble))
115
116 /*========================= End of Defines =========================*/
117
118 /*------------------------------------------------------------------*/
119 /* I n c l u d e s */
120 /*------------------------------------------------------------------*/
121
122 #include "mini.h"
123 #include <string.h>
124
125 #include <mono/metadata/appdomain.h>
126 #include <mono/metadata/debug-helpers.h>
127 #include <mono/metadata/profiler-private.h>
128 #include <mono/utils/mono-math.h>
129
130 #include "mini-s390x.h"
131 #include "inssel.h"
132 #include "cpu-s390x.h"
133
134 /*========================= End of Includes ========================*/
135
136 /*------------------------------------------------------------------*/
137 /* T y p e d e f s */
138 /*------------------------------------------------------------------*/
139
140 typedef struct {
141 guint stack_size,
142 local_size,
143 code_size,
144 retStruct;
145 } size_data;
146
147 /*------------------------------------------------------------------*/
148 /* Used by the instrument_emit_epilog */
149 /*------------------------------------------------------------------*/
150
151 enum {
152 SAVE_NONE,
153 SAVE_STRUCT,
154 SAVE_ONE,
155 SAVE_TWO,
156 SAVE_FP
157 };
158
159 typedef struct {
160 int born_in;
161 int killed_in;
162 int last_use;
163 int prev_use;
164 } RegTrack;
165
166 typedef struct InstList InstList;
167
168 struct InstList {
169 InstList *prev;
170 InstList *next;
171 MonoInst *data;
172 };
173
174 enum {
175 RegTypeGeneral,
176 RegTypeBase,
177 RegTypeFP,
178 RegTypeStructByVal,
179 RegTypeStructByAddr
180 };
181
182 typedef struct {
183 gint32 offset; /* offset from caller's stack */
184 gint32 offparm; /* offset on callee's stack */
185 guint16 vtsize; /* in param area */
186 guint8 reg;
187 guint8 regtype; /* See RegType* */
188 guint32 size; /* Size of structure used by RegTypeStructByVal */
189 } ArgInfo;
190
191 typedef struct {
192 int nargs;
193 guint32 stack_usage;
194 guint32 struct_ret;
195 ArgInfo ret;
196 ArgInfo args [1];
197 } CallInfo;
198
199 typedef struct {
200 gint64 gr[5]; /* R2-R6 */
201 gdouble fp[3]; /* F0-F2 */
202 } __attribute__ ((packed)) RegParm;
203
204 /*========================= End of Typedefs ========================*/
205
206 /*------------------------------------------------------------------*/
207 /* P r o t o t y p e s */
208 /*------------------------------------------------------------------*/
209
210 static guint8 * emit_memcpy (guint8 *, int, int, int, int, int);
211 static void indent (int);
212 static guint8 * restoreLMF(MonoCompile *, guint8 *);
213 static guint8 * backUpStackPtr(MonoCompile *, guint8 *);
214 static void decodeParm (MonoType *, void *, int);
215 static void enter_method (MonoMethod *, RegParm *, char *);
216 static void leave_method (MonoMethod *, ...);
217 static gboolean is_regsize_var (MonoType *);
218 static void add_general (guint *, size_data *, ArgInfo *);
219 static CallInfo * calculate_sizes (MonoMethodSignature *, size_data *, gboolean);
220 static void peephole_pass (MonoCompile *, MonoBasicBlock *);
221 static int mono_spillvar_offset (MonoCompile *, int);
222 static int mono_spillvar_offset_float (MonoCompile *, int);
223 static void print_ins (int, MonoInst *);
224 static void print_regtrack (RegTrack *, int);
225 static InstList * inst_list_prepend (MonoMemPool *, InstList *, MonoInst *);
226 static int get_register_force_spilling (MonoCompile *, InstList *, MonoInst *, int);
227 static int get_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
228 static int get_float_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
229 static MonoInst * create_copy_ins (MonoCompile *, int, int, MonoInst *);
230 static MonoInst * create_copy_ins_float (MonoCompile *, int, int, MonoInst *);
231 static MonoInst * create_spilled_store (MonoCompile *, int, int, int, MonoInst *);
232 static MonoInst * create_spilled_store_float (MonoCompile *, int, int, int, MonoInst *);
233 static void insert_before_ins (MonoInst *, InstList *, MonoInst *);
234 static int alloc_int_reg (MonoCompile *, InstList *, MonoInst *, int, guint32);
235 static guchar * emit_float_to_int (MonoCompile *, guchar *, int, int, int, gboolean);
236 static unsigned char * mono_emit_stack_alloc (guchar *, MonoInst *);
237
238 /*========================= End of Prototypes ======================*/
239
240 /*------------------------------------------------------------------*/
241 /* G l o b a l V a r i a b l e s */
242 /*------------------------------------------------------------------*/
243
244 int mono_exc_esp_offset = 0;
245
246 static int indent_level = 0;
247
248 static const char*const * ins_spec = s390x;
249
250 /*====================== End of Global Variables ===================*/
251
252 /*------------------------------------------------------------------*/
253 /* */
254 /* Name - mono_arch_regname */
255 /* */
256 /* Function - Returns the name of the register specified by */
257 /* the input parameter. */
258 /* */
259 /*------------------------------------------------------------------*/
260
261 const char*
262 mono_arch_regname (int reg) {
263 static const char * rnames[] = {
264 "s390_r0", "s390_sp", "s390_r2", "s390_r3", "s390_r4",
265 "s390_r5", "s390_r6", "s390_r7", "s390_r8", "s390_r9",
266 "s390_r10", "s390_r11", "s390_r12", "s390_r13", "s390_r14",
267 "s390_r15"
268 };
269 if (reg >= 0 && reg < 16)
270 return rnames [reg];
271 return "unknown";
272 }
273
274 /*========================= End of Function ========================*/
275
276 /*------------------------------------------------------------------*/
277 /* */
278 /* Name - mono_arch_is_inst_imm */
279 /* */
280 /* Function - Determine whether an instruction qualifies as an */
281 /* immediate. */
282 /* */
283 /*------------------------------------------------------------------*/
284
285 gboolean
286 mono_arch_is_inst_imm (gint64 imm)
287 {
288 return s390_is_imm16 (imm);
289 }
290
291 /*========================= End of Function ========================*/
292
293 /*------------------------------------------------------------------*/
294 /* */
295 /* Name - emit_memcpy */
296 /* */
297 /* Function - Emit code to move from memory-to-memory based on */
298 /* the size of the variable. r0 is overwritten. */
299 /* */
300 /*------------------------------------------------------------------*/
301
302 static guint8 *
303 emit_memcpy (guint8 *code, int size, int dreg, int doffset, int sreg, int soffset)
304 {
305 switch (size) {
306 case 4 :
307 s390_l (code, s390_r0, 0, sreg, soffset);
308 s390_st (code, s390_r0, 0, dreg, doffset);
309 break;
310
311 case 3 :
312 s390_icm (code, s390_r0, 14, sreg, soffset);
313 s390_stcm (code, s390_r0, 14, dreg, doffset);
314 break;
315
316 case 2 :
317 s390_lh (code, s390_r0, 0, sreg, soffset);
318 s390_sth (code, s390_r0, 0, dreg, doffset);
319 break;
320
321 case 1 :
322 s390_ic (code, s390_r0, 0, sreg, soffset);
323 s390_stc (code, s390_r0, 0, dreg, doffset);
324 break;
325
326 default :
327 while (size > 0) {
328 int len;
329
330 if (size > 256)
331 len = 256;
332 else
333 len = size;
334 s390_mvc (code, len, dreg, doffset, sreg, soffset);
335 size -= len;
336 }
337 }
338 return code;
339 }
340
341 /*========================= End of Function ========================*/
342
343 /*------------------------------------------------------------------*/
344 /* */
345 /* Name - arch_get_argument_info */
346 /* */
347 /* Function - Gathers information on parameters such as size, */
348 /* alignment, and padding. arg_info should be large */
349 /* enough to hold param_count + 1 entries. */
350 /* */
351 /* Parameters - @csig - Method signature */
352 /* @param_count - No. of parameters to consider */
353 /* @arg_info - An array to store the result info */
354 /* */
355 /* Returns - Size of the activation frame */
356 /* */
357 /*------------------------------------------------------------------*/
358
359 int
360 mono_arch_get_argument_info (MonoMethodSignature *csig,
361 int param_count,
362 MonoJitArgumentInfo *arg_info)
363 {
364 int k, frame_size = 0;
365 int size, align, pad;
366 int offset = 8;
367
368 if (MONO_TYPE_ISSTRUCT (csig->ret)) {
369 frame_size += sizeof (gpointer);
370 offset += 4;
371 }
372
373 arg_info [0].offset = offset;
374
375 if (csig->hasthis) {
376 frame_size += sizeof (gpointer);
377 offset += 4;
378 }
379
380 arg_info [0].size = frame_size;
381
382 for (k = 0; k < param_count; k++) {
383
384 if (csig->pinvoke)
385 size = mono_type_native_stack_size (csig->params [k], &align);
386 else
387 size = mono_type_stack_size (csig->params [k], &align);
388
389 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
390 arg_info [k].pad = pad;
391 frame_size += size;
392 arg_info [k + 1].pad = 0;
393 arg_info [k + 1].size = size;
394 offset += pad;
395 arg_info [k + 1].offset = offset;
396 offset += size;
397 }
398
399 align = MONO_ARCH_FRAME_ALIGNMENT;
400 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
401 arg_info [k].pad = pad;
402
403 return frame_size;
404 }
405
406 /*========================= End of Function ========================*/
407
408 /*------------------------------------------------------------------*/
409 /* */
410 /* Name - restoreLMF */
411 /* */
412 /* Function - Restore the LMF state prior to exiting a method. */
413 /* */
414 /*------------------------------------------------------------------*/
415
416 static inline guint8 *
417 restoreLMF(MonoCompile *cfg, guint8 *code)
418 {
419 int lmfOffset = 0;
420
421 s390_lgr (code, s390_r13, cfg->frame_reg);
422
423 lmfOffset = cfg->stack_usage - sizeof(MonoLMF);
424
425 /*-------------------------------------------------*/
426 /* r13 = my lmf */
427 /*-------------------------------------------------*/
428 s390_aghi (code, s390_r13, lmfOffset);
429
430 /*-------------------------------------------------*/
431 /* r6 = &jit_tls->lmf */
432 /*-------------------------------------------------*/
433 s390_lg (code, s390_r6, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
434
435 /*-------------------------------------------------*/
436 /* r0 = lmf.previous_lmf */
437 /*-------------------------------------------------*/
438 s390_lg (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
439
440 /*-------------------------------------------------*/
441 /* jit_tls->lmf = previous_lmf */
442 /*-------------------------------------------------*/
443 s390_lg (code, s390_r13, 0, s390_r6, 0);
444 s390_stg (code, s390_r0, 0, s390_r6, 0);
445 return (code);
446 }
447
448 /*========================= End of Function ========================*/
449
450 /*------------------------------------------------------------------*/
451 /* */
452 /* Name - backStackPtr. */
453 /* */
454 /* Function - Restore Stack Pointer to previous frame. */
455 /* */
456 /*------------------------------------------------------------------*/
457
458 static inline guint8 *
459 backUpStackPtr(MonoCompile *cfg, guint8 *code)
460 {
461 int stackSize = cfg->stack_usage;
462
463 if (s390_is_imm16 (cfg->stack_usage)) {
464 s390_aghi (code, STK_BASE, cfg->stack_usage);
465 } else {
466 while (stackSize > 32767) {
467 s390_aghi (code, STK_BASE, 32767);
468 stackSize -= 32767;
469 }
470 s390_aghi (code, STK_BASE, stackSize);
471 }
472 return (code);
473 }
474
475 /*========================= End of Function ========================*/
476
477 /*------------------------------------------------------------------*/
478 /* */
479 /* Name - indent */
480 /* */
481 /* Function - Perform nice indenting to current level */
482 /* */
483 /*------------------------------------------------------------------*/
484
485 static void
486 indent (int diff) {
487 int v;
488 if (diff < 0)
489 indent_level += diff;
490 v = indent_level;
491 printf("[%3d] ",v);
492 while (v-- > 0) {
493 printf (". ");
494 }
495 if (diff > 0)
496 indent_level += diff;
497 }
498
499 /*========================= End of Function ========================*/
500
501 /*------------------------------------------------------------------*/
502 /* */
503 /* Name - decodeParm */
504 /* */
505 /* Function - Decode a parameter for the trace. */
506 /* */
507 /*------------------------------------------------------------------*/
508
509 static void
510 decodeParm(MonoType *type, void *curParm, int size)
511 {
512 guint32 simpleType;
513
514 if (type->byref) {
515 printf("[BYREF:%p], ", *((char **) curParm));
516 } else {
517 simpleType = type->type;
518 enum_parmtype:
519 switch (simpleType) {
520 case MONO_TYPE_I :
521 printf ("[INTPTR:%p], ", *((int **) curParm));
522 break;
523 case MONO_TYPE_U :
524 printf ("[UINTPTR:%p], ", *((int **) curParm));
525 break;
526 case MONO_TYPE_BOOLEAN :
527 printf ("[BOOL:%p], ", *((int *) curParm));
528 break;
529 case MONO_TYPE_CHAR :
530 printf ("[CHAR:%p], ", *((int *) curParm));
531 break;
532 case MONO_TYPE_I1 :
533 printf ("[INT1:%d], ", *((int *) curParm));
534 break;
535 case MONO_TYPE_I2 :
536 printf ("[INT2:%d], ", *((int *) curParm));
537 break;
538 case MONO_TYPE_I4 :
539 printf ("[INT4:%d], ", *((int *) curParm));
540 break;
541 case MONO_TYPE_U1 :
542 printf ("[UINT1:%ud], ", *((unsigned int *) curParm));
543 break;
544 case MONO_TYPE_U2 :
545 printf ("[UINT2:%ud], ", *((guint16 *) curParm));
546 break;
547 case MONO_TYPE_U4 :
548 printf ("[UINT4:%ud], ", *((guint32 *) curParm));
549 break;
550 case MONO_TYPE_U8 :
551 printf ("[UINT8:%ul], ", *((guint64 *) curParm));
552 break;
553 case MONO_TYPE_STRING : {
554 MonoString *s = *((MonoString **) curParm);
555 if (s) {
556 g_assert (((MonoObject *) s)->vtable->klass == mono_defaults.string_class);
557 printf("[STRING:%p:%s], ", s, mono_string_to_utf8(s));
558 } else {
559 printf("[STRING:null], ");
560 }
561 break;
562 }
563 case MONO_TYPE_CLASS :
564 case MONO_TYPE_OBJECT : {
565 MonoObject *obj = *((MonoObject **) curParm);
566 MonoClass *class;
567 if (obj) {
568 printf("[CLASS/OBJ:");
569 class = obj->vtable->klass;
570 if (class == mono_defaults.string_class) {
571 printf("[STRING:%p:%s]",
572 *obj, mono_string_to_utf8 (obj));
573 } else if (class == mono_defaults.int32_class) {
574 printf("[INT32:%p:%d]",
575 obj, *(gint32 *)((char *)obj + sizeof (MonoObject)));
576 } else
577 printf("[%s.%s:%p]",
578 class->name_space, class->name, obj);
579 printf("], ");
580 } else {
581 printf("[OBJECT:null], ");
582 }
583 break;
584 }
585 case MONO_TYPE_PTR :
586 printf("[PTR:%p], ", *((gpointer **) (curParm)));
587 break;
588 case MONO_TYPE_FNPTR :
589 printf("[FNPTR:%p], ", *((gpointer **) (curParm)));
590 break;
591 case MONO_TYPE_ARRAY :
592 printf("[ARRAY:%p], ", *((gpointer **) (curParm)));
593 break;
594 case MONO_TYPE_SZARRAY :
595 printf("[SZARRAY:%p], ", *((gpointer **) (curParm)));
596 break;
597 case MONO_TYPE_I8 :
598 printf("[INT8:%lld], ", *((gint64 *) (curParm)));
599 break;
600 case MONO_TYPE_R4 :
601 printf("[FLOAT4:%f], ", *((float *) (curParm)));
602 break;
603 case MONO_TYPE_R8 :
604 printf("[FLOAT8:%g], ", *((double *) (curParm)));
605 break;
606 case MONO_TYPE_VALUETYPE : {
607 int i;
608 if (type->data.klass->enumtype) {
609 simpleType = type->data.klass->enum_basetype->type;
610 printf("{VALUETYPE} - ");
611 goto enum_parmtype;
612 }
613 printf("[VALUETYPE:");
614 for (i = 0; i < size; i++)
615 printf("%02x,", *((guint8 *)curParm+i));
616 printf("]");
617 break;
618 }
619 default :
620 printf("[?? - %d], ",simpleType);
621 }
622 }
623 }
624
625 /*========================= End of Function ========================*/
626
627 /*------------------------------------------------------------------*/
628 /* */
629 /* Name - enter_method */
630 /* */
631 /* Function - Perform tracing of the entry to the current */
632 /* method. */
633 /* */
634 /*------------------------------------------------------------------*/
635
636 static void
637 enter_method (MonoMethod *method, RegParm *rParm, char *sp)
638 {
639 int i, oParm = 0, iParm = 0;
640 MonoClass *class;
641 MonoObject *obj;
642 MonoJitArgumentInfo *arg_info;
643 MonoMethodSignature *sig;
644 char *fname;
645 guint64 ip;
646 CallInfo *cinfo;
647 ArgInfo *ainfo;
648 size_data sz;
649 void *curParm;
650
651 fname = mono_method_full_name (method, TRUE);
652 indent (1);
653 printf ("ENTER: %s(", fname);
654 g_free (fname);
655
656 ip = (*(guint64 *) (sp+S390_RET_ADDR_OFFSET));
657 printf (") ip: %p sp: %p - ", ip, sp);
658
659 if (rParm == NULL)
660 return;
661
662 sig = method->signature;
663
664 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
665
666 if (cinfo->struct_ret) {
667 printf ("[VALUERET:%p], ", rParm->gr[0]);
668 iParm = 1;
669 }
670
671 if (sig->hasthis) {
672 gpointer *this = (gpointer *) rParm->gr[iParm];
673 obj = (MonoObject *) this;
674 if (method->klass->valuetype) {
675 if (obj) {
676 printf("this:[value:%p:%08x], ",
677 this, *((guint64 *)(this+sizeof(MonoObject))));
678 } else
679 printf ("this:[NULL], ");
680 } else {
681 if (obj) {
682 class = obj->vtable->klass;
683 if (class == mono_defaults.string_class) {
684 printf ("this:[STRING:%p:%s], ",
685 obj, mono_string_to_utf8 ((MonoString *)obj));
686 } else {
687 printf ("this:%p[%s.%s], ",
688 obj, class->name_space, class->name);
689 }
690 } else
691 printf ("this:NULL, ");
692 }
693 oParm++;
694 }
695
696 for (i = 0; i < sig->param_count; ++i) {
697 ainfo = cinfo->args + (i + oParm);
698 switch (ainfo->regtype) {
699 case RegTypeGeneral :
700 decodeParm(sig->params[i], &(rParm->gr[ainfo->reg-2]), ainfo->size);
701 break;
702 case RegTypeFP :
703 decodeParm(sig->params[i], &(rParm->fp[ainfo->reg]), ainfo->size);
704 break;
705 case RegTypeBase :
706 decodeParm(sig->params[i], sp+ainfo->offset, ainfo->size);
707 break;
708 case RegTypeStructByVal :
709 if (ainfo->reg != STK_BASE)
710 curParm = &(rParm->gr[ainfo->reg-2]);
711 else
712 curParm = sp+ainfo->offset;
713
714 switch (ainfo->vtsize) {
715 case 0:
716 case 1:
717 case 2:
718 case 4:
719 case 8:
720 decodeParm(sig->params[i],
721 curParm,
722 ainfo->size);
723 break;
724 default:
725 decodeParm(sig->params[i],
726 *((char **) curParm),
727 ainfo->vtsize);
728 }
729 break;
730 case RegTypeStructByAddr :
731 if (ainfo->reg != STK_BASE)
732 curParm = &(rParm->gr[ainfo->reg-2]);
733 else
734 curParm = sp+ainfo->offset;
735
736 decodeParm(sig->params[i],
737 *((char **) curParm),
738 ainfo->vtsize);
739 break;
740
741 default :
742 printf("???, ");
743 }
744 }
745 printf("\n");
746 g_free (cinfo);
747 }
748
749 /*========================= End of Function ========================*/
750
751 /*------------------------------------------------------------------*/
752 /* */
753 /* Name - leave_method */
754 /* */
755 /* Function - */
756 /* */
757 /*------------------------------------------------------------------*/
758
759 static void
760 leave_method (MonoMethod *method, ...)
761 {
762 MonoType *type;
763 char *fname;
764 guint64 ip;
765 va_list ap;
766
767 va_start(ap, method);
768
769 fname = mono_method_full_name (method, TRUE);
770 indent (-1);
771 printf ("LEAVE: %s", fname);
772 g_free (fname);
773
774 type = method->signature->ret;
775
776 handle_enum:
777 switch (type->type) {
778 case MONO_TYPE_VOID:
779 break;
780 case MONO_TYPE_BOOLEAN: {
781 int val = va_arg (ap, int);
782 if (val)
783 printf ("[TRUE:%d]", val);
784 else
785 printf ("[FALSE]");
786
787 break;
788 }
789 case MONO_TYPE_CHAR: {
790 int val = va_arg (ap, int);
791 printf ("[CHAR:%d]", val);
792 break;
793 }
794 case MONO_TYPE_I1: {
795 int val = va_arg (ap, int);
796 printf ("[INT1:%d]", val);
797 break;
798 }
799 case MONO_TYPE_U1: {
800 int val = va_arg (ap, int);
801 printf ("[UINT1:%d]", val);
802 break;
803 }
804 case MONO_TYPE_I2: {
805 int val = va_arg (ap, int);
806 printf ("[INT2:%d]", val);
807 break;
808 }
809 case MONO_TYPE_U2: {
810 int val = va_arg (ap, int);
811 printf ("[UINT2:%d]", val);
812 break;
813 }
814 case MONO_TYPE_I4: {
815 int val = va_arg (ap, int);
816 printf ("[INT4:%d]", val);
817 break;
818 }
819 case MONO_TYPE_U4: {
820 int val = va_arg (ap, int);
821 printf ("[UINT4:%d]", val);
822 break;
823 }
824 case MONO_TYPE_I: {
825 int *val = va_arg (ap, int*);
826 printf ("[INT:%d]", val);
827 printf("]");
828 break;
829 }
830 case MONO_TYPE_U: {
831 int *val = va_arg (ap, int*);
832 printf ("[UINT:%d]", val);
833 printf("]");
834 break;
835 }
836 case MONO_TYPE_STRING: {
837 MonoString *s = va_arg (ap, MonoString *);
838 ;
839 if (s) {
840 g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
841 printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
842 } else
843 printf ("[STRING:null], ");
844 break;
845 }
846 case MONO_TYPE_CLASS:
847 case MONO_TYPE_OBJECT: {
848 MonoObject *o = va_arg (ap, MonoObject *);
849
850 if (o) {
851 if (o->vtable->klass == mono_defaults.boolean_class) {
852 printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
853 } else if (o->vtable->klass == mono_defaults.int32_class) {
854 printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
855 } else if (o->vtable->klass == mono_defaults.int64_class) {
856 printf ("[INT64:%p:%lld]", o, *((gint64 *)((char *)o + sizeof (MonoObject))));
857 } else
858 printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
859 } else
860 printf ("[OBJECT:%p]", o);
861
862 break;
863 }
864 case MONO_TYPE_PTR:
865 case MONO_TYPE_FNPTR:
866 case MONO_TYPE_ARRAY:
867 case MONO_TYPE_SZARRAY: {
868 gpointer p = va_arg (ap, gpointer);
869 printf ("[result=%p]", p);
870 break;
871 }
872 case MONO_TYPE_I8: {
873 gint64 l = va_arg (ap, gint64);
874 printf ("[LONG:%lld]", l);
875 break;
876 }
877 case MONO_TYPE_R4: {
878 double f = va_arg (ap, double);
879 printf ("[FLOAT4:%f]\n", (float) f);
880 break;
881 }
882 case MONO_TYPE_R8: {
883 double f = va_arg (ap, double);
884 printf ("[FLOAT8:%g]\n", f);
885 break;
886 }
887 case MONO_TYPE_VALUETYPE:
888 if (type->data.klass->enumtype) {
889 type = type->data.klass->enum_basetype;
890 goto handle_enum;
891 } else {
892 guint8 *p = va_arg (ap, gpointer);
893 int j, size, align;
894 size = mono_type_size (type, &align);
895 printf ("[");
896 for (j = 0; p && j < size; j++)
897 printf ("%02x,", p [j]);
898 printf ("]");
899 }
900 break;
901 default:
902 printf ("(unknown return type %x)",
903 method->signature->ret->type);
904 }
905
906 ip = ((gint64) __builtin_return_address (0));
907 printf (" ip: %p\n", ip);
908 }
909
910 /*========================= End of Function ========================*/
911
912 /*------------------------------------------------------------------*/
913 /* */
914 /* Name - mono_arch_cpu_init */
915 /* */
916 /* Function - Perform CPU specific initialization to execute */
917 /* managed code. */
918 /* */
919 /*------------------------------------------------------------------*/
920
921 void
922 mono_arch_cpu_init (void)
923 {
924 guint mode = 1;
925
926 /*--------------------------------------*/
927 /* Set default rounding mode for FP */
928 /*--------------------------------------*/
929 __asm__ ("SRNM\t%0\n\t"
930 : : "m" (mode));
931 }
932
933 /*========================= End of Function ========================*/
934
935 /*------------------------------------------------------------------*/
936 /* */
937 /* Name - mono_arch_cpu_optimizazions */
938 /* */
939 /* Function - Returns the optimizations supported on this CPU */
940 /* */
941 /*------------------------------------------------------------------*/
942
943 guint32
944 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
945 {
946 guint32 opts = 0;
947
948 /* no s390-specific optimizations yet */
949 *exclude_mask = MONO_OPT_INLINE|MONO_OPT_LINEARS;
950 return opts;
951 }
952
953 /*========================= End of Function ========================*/
954
955 /*------------------------------------------------------------------*/
956 /* */
957 /* Name - */
958 /* */
959 /* Function - */
960 /* */
961 /*------------------------------------------------------------------*/
962
963 static gboolean
964 is_regsize_var (MonoType *t) {
965 if (t->byref)
966 return TRUE;
967 switch (t->type) {
968 case MONO_TYPE_I4:
969 case MONO_TYPE_U4:
970 case MONO_TYPE_I:
971 case MONO_TYPE_U:
972 return TRUE;
973 case MONO_TYPE_OBJECT:
974 case MONO_TYPE_STRING:
975 case MONO_TYPE_CLASS:
976 case MONO_TYPE_SZARRAY:
977 case MONO_TYPE_ARRAY:
978 return FALSE;
979 case MONO_TYPE_VALUETYPE:
980 if (t->data.klass->enumtype)
981 return is_regsize_var (t->data.klass->enum_basetype);
982 return FALSE;
983 }
984 return FALSE;
985 }
986
987 /*========================= End of Function ========================*/
988
989 /*------------------------------------------------------------------*/
990 /* */
991 /* Name - mono_arch_get_allocatable_int_vars */
992 /* */
993 /* Function - */
994 /* */
995 /*------------------------------------------------------------------*/
996
997 GList *
998 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
999 {
1000 GList *vars = NULL;
1001 int i;
1002
1003 for (i = 0; i < cfg->num_varinfo; i++) {
1004 MonoInst *ins = cfg->varinfo [i];
1005 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
1006
1007 /* unused vars */
1008 if (vmv->range.first_use.abs_pos > vmv->range.last_use.abs_pos)
1009 continue;
1010
1011 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT) ||
1012 (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
1013 continue;
1014
1015 /* we can only allocate 32 bit values */
1016 if (is_regsize_var (ins->inst_vtype)) {
1017 g_assert (MONO_VARINFO (cfg, i)->reg == -1);
1018 g_assert (i == vmv->idx);
1019 vars = mono_varlist_insert_sorted (cfg, vars, vmv, FALSE);
1020 }
1021 }
1022
1023 return vars;
1024 }
1025
1026 /*========================= End of Function ========================*/
1027
1028 /*------------------------------------------------------------------*/
1029 /* */
1030 /* Name - mono_arch_global_int_regs */
1031 /* */
1032 /* Function - Return a list of usable integer registers. */
1033 /* */
1034 /*------------------------------------------------------------------*/
1035
1036 GList *
1037 mono_arch_get_global_int_regs (MonoCompile *cfg)
1038 {
1039 GList *regs = NULL;
1040 int i, top = 12;
1041
1042 for (i = 3; i < top; ++i)
1043 regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
1044
1045 return regs;
1046 }
1047
1048 /*========================= End of Function ========================*/
1049
1050 /*------------------------------------------------------------------*/
1051 /* */
1052 /* Name - mono_arch_flush_icache */
1053 /* */
1054 /* Function - Flush the CPU icache. */
1055 /* */
1056 /*------------------------------------------------------------------*/
1057
1058 void
1059 mono_arch_flush_icache (guint8 *code, gint size)
1060 {
1061 }
1062
1063 /*========================= End of Function ========================*/
1064
1065 /*------------------------------------------------------------------*/
1066 /* */
1067 /* Name - add_general */
1068 /* */
1069 /* Function - Determine code and stack size incremements for a */
1070 /* parameter. */
1071 /* */
1072 /*------------------------------------------------------------------*/
1073
1074 static void inline
1075 add_general (guint *gr, size_data *sz, ArgInfo *ainfo)
1076 {
1077 if (*gr > S390_LAST_ARG_REG) {
1078 sz->stack_size = S390_ALIGN(sz->stack_size, sizeof(long));
1079 ainfo->offset = sz->stack_size;
1080 ainfo->reg = STK_BASE;
1081 ainfo->regtype = RegTypeBase;
1082 sz->stack_size += sizeof(int);
1083 sz->code_size += 12;
1084 } else {
1085 ainfo->reg = *gr;
1086 sz->code_size += 8;
1087 }
1088 (*gr) ++;
1089 }
1090
1091 /*========================= End of Function ========================*/
1092
1093 /*------------------------------------------------------------------*/
1094 /* */
1095 /* Name - calculate_sizes */
1096 /* */
1097 /* Function - Determine the amount of space required for code */
1098 /* and stack. In addition determine starting points */
1099 /* for stack-based parameters, and area for struct- */
1100 /* ures being returned on the stack. */
1101 /* */
1102 /*------------------------------------------------------------------*/
1103
1104 static CallInfo *
1105 calculate_sizes (MonoMethodSignature *sig, size_data *sz,
1106 gboolean string_ctor)
1107 {
1108 guint i, fr, gr, size, nWords;
1109 int nParm = sig->hasthis + sig->param_count;
1110 guint32 simpletype, align;
1111 CallInfo *cinfo = g_malloc0 (sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1112
1113 fr = 0;
1114 gr = s390_r2;
1115 nParm = 0;
1116 cinfo->struct_ret = 0;
1117 sz->retStruct = 0;
1118 sz->stack_size = S390_MINIMAL_STACK_SIZE;
1119 sz->code_size = 0;
1120 sz->local_size = 0;
1121
1122 /*----------------------------------------------------------*/
1123 /* We determine the size of the return code/stack in case we*/
1124 /* need to reserve a register to be used to address a stack */
1125 /* area that the callee will use. */
1126 /*----------------------------------------------------------*/
1127
1128 simpletype = sig->ret->type;
1129 enum_retvalue:
1130 switch (simpletype) {
1131 case MONO_TYPE_BOOLEAN:
1132 case MONO_TYPE_I1:
1133 case MONO_TYPE_U1:
1134 case MONO_TYPE_I2:
1135 case MONO_TYPE_U2:
1136 case MONO_TYPE_CHAR:
1137 case MONO_TYPE_I4:
1138 case MONO_TYPE_U4:
1139 case MONO_TYPE_I:
1140 case MONO_TYPE_U:
1141 case MONO_TYPE_CLASS:
1142 case MONO_TYPE_OBJECT:
1143 case MONO_TYPE_SZARRAY:
1144 case MONO_TYPE_ARRAY:
1145 case MONO_TYPE_PTR:
1146 case MONO_TYPE_STRING:
1147 cinfo->ret.reg = s390_r2;
1148 sz->code_size += 4;
1149 break;
1150 case MONO_TYPE_R4:
1151 case MONO_TYPE_R8:
1152 cinfo->ret.reg = s390_f0;
1153 sz->code_size += 4;
1154 break;
1155 case MONO_TYPE_I8:
1156 case MONO_TYPE_U8:
1157 cinfo->ret.reg = s390_r2;
1158 sz->code_size += 4;
1159 break;
1160 case MONO_TYPE_VALUETYPE:
1161 if (sig->ret->data.klass->enumtype) {
1162 simpletype = sig->ret->data.klass->enum_basetype->type;
1163 goto enum_retvalue;
1164 }
1165 if (sig->pinvoke)
1166 size = mono_class_native_size (sig->ret->data.klass, &align);
1167 else
1168 size = mono_class_value_size (sig->ret->data.klass, &align);
1169 cinfo->ret.reg = s390_r2;
1170 cinfo->struct_ret = 1;
1171 cinfo->ret.size = size;
1172 cinfo->ret.vtsize = size;
1173 cinfo->ret.offset = sz->stack_size;
1174 sz->stack_size += S390_ALIGN(size, align);
1175 gr++;
1176 break;
1177 case MONO_TYPE_TYPEDBYREF:
1178 case MONO_TYPE_VOID:
1179 break;
1180 default:
1181 g_error ("Can't handle as return value 0x%x", sig->ret->type);
1182 }
1183
1184 if (sig->hasthis) {
1185 add_general (&gr, sz, cinfo->args+nParm);
1186 cinfo->args[nParm].size = sizeof(gpointer);
1187 nParm++;
1188 }
1189
1190 /*----------------------------------------------------------*/
1191 /* We determine the size of the parameter code and stack */
1192 /* requirements by checking the types and sizes of the */
1193 /* parameters. */
1194 /*----------------------------------------------------------*/
1195
1196 for (i = 0; i < sig->param_count; ++i) {
1197 if (sig->params [i]->byref) {
1198 add_general (&gr, sz, cinfo->args+nParm);
1199 cinfo->args[nParm].size = sizeof(gpointer);
1200 nParm++;
1201 continue;
1202 }
1203 simpletype = sig->params [i]->type;
1204 enum_calc_size:
1205 switch (simpletype) {
1206 case MONO_TYPE_BOOLEAN:
1207 case MONO_TYPE_I1:
1208 case MONO_TYPE_U1:
1209 cinfo->args[nParm].size = sizeof(char);
1210 add_general (&gr, sz, cinfo->args+nParm);
1211 nParm++;
1212 break;
1213 case MONO_TYPE_I2:
1214 case MONO_TYPE_U2:
1215 case MONO_TYPE_CHAR:
1216 cinfo->args[nParm].size = sizeof(short);
1217 add_general (&gr, sz, cinfo->args+nParm);
1218 nParm++;
1219 break;
1220 case MONO_TYPE_I4:
1221 case MONO_TYPE_U4:
1222 cinfo->args[nParm].size = sizeof(int);
1223 add_general (&gr, sz, cinfo->args+nParm);
1224 nParm++;
1225 break;
1226 case MONO_TYPE_I:
1227 case MONO_TYPE_U:
1228 case MONO_TYPE_PTR:
1229 case MONO_TYPE_CLASS:
1230 case MONO_TYPE_OBJECT:
1231 case MONO_TYPE_STRING:
1232 case MONO_TYPE_SZARRAY:
1233 case MONO_TYPE_ARRAY:
1234 cinfo->args[nParm].size = sizeof(gpointer);
1235 add_general (&gr, sz, cinfo->args+nParm);
1236 nParm++;
1237 break;
1238 case MONO_TYPE_VALUETYPE:
1239 if (sig->params [i]->data.klass->enumtype) {
1240 simpletype = sig->params [i]->data.klass->enum_basetype->type;
1241 goto enum_calc_size;
1242 }
1243 if (sig->pinvoke)
1244 size = mono_class_native_size (sig->params [i]->data.klass, &align);
1245 else
1246 size = mono_class_value_size (sig->params [i]->data.klass, &align);
1247 nWords = (size + sizeof(gpointer) - 1) /
1248 sizeof(gpointer);
1249
1250 cinfo->args[nParm].vtsize = 0;
1251 cinfo->args[nParm].size = 0;
1252 cinfo->args[nParm].offparm = sz->local_size;
1253
1254 switch (size) {
1255 /*----------------------------------*/
1256 /* On S/390, structures of size 1, */
1257 /* 2, 4, and 8 bytes are passed in */
1258 /* (a) register(s). */
1259 /*----------------------------------*/
1260 case 0:
1261 case 1:
1262 case 2:
1263 case 4:
1264 add_general(&gr, sz, cinfo->args+nParm);
1265 cinfo->args[nParm].size = size;
1266 cinfo->args[nParm].regtype = RegTypeStructByVal;
1267 nParm++;
1268 sz->local_size += sizeof(long);
1269 break;
1270 case 8:
1271 add_general(&gr, sz, cinfo->args+nParm);
1272 cinfo->args[nParm].size = sizeof(long long);
1273 cinfo->args[nParm].regtype = RegTypeStructByVal;
1274 nParm++;
1275 sz->local_size += sizeof(long);
1276 break;
1277 default:
1278 add_general(&gr, sz, cinfo->args+nParm);
1279 cinfo->args[nParm].size = sizeof(gpointer);
1280 cinfo->args[nParm].regtype = RegTypeStructByAddr;
1281 cinfo->args[nParm].vtsize = size;
1282 sz->code_size += 40;
1283 sz->local_size += size;
1284 if (cinfo->args[nParm].reg == STK_BASE)
1285 sz->local_size += sizeof(gpointer);
1286 nParm++;
1287 }
1288 break;
1289 case MONO_TYPE_I8:
1290 case MONO_TYPE_U8:
1291 cinfo->args[nParm].size = sizeof(long long);
1292 add_general (&gr, sz, cinfo->args+nParm);
1293 nParm++;
1294 break;
1295 case MONO_TYPE_R4:
1296 cinfo->args[nParm].size = sizeof(float);
1297 if (fr <= S390_LAST_FPARG_REG) {
1298 cinfo->args[nParm].regtype = RegTypeFP;
1299 cinfo->args[nParm].reg = fr;
1300 sz->code_size += 4;
1301 fr += 2;
1302 }
1303 else {
1304 cinfo->args[nParm].offset = sz->stack_size;
1305 cinfo->args[nParm].reg = STK_BASE;
1306 cinfo->args[nParm].regtype = RegTypeBase;
1307 sz->code_size += 4;
1308 sz->stack_size += sizeof(float);
1309 }
1310 nParm++;
1311 break;
1312 case MONO_TYPE_R8:
1313 cinfo->args[nParm].size = sizeof(double);
1314 if (fr <= S390_LAST_FPARG_REG) {
1315 cinfo->args[nParm].regtype = RegTypeFP;
1316 cinfo->args[nParm].reg = fr;
1317 sz->code_size += 4;
1318 fr += 2;
1319 } else {
1320 cinfo->args[nParm].offset = sz->stack_size;
1321 cinfo->args[nParm].reg = STK_BASE;
1322 cinfo->args[nParm].regtype = RegTypeBase;
1323 sz->code_size += 4;
1324 sz->stack_size += sizeof(double);
1325 }
1326 nParm++;
1327 break;
1328 default:
1329 g_error ("Can't trampoline 0x%x", sig->params [i]->type);
1330 }
1331 }
1332
1333 cinfo->stack_usage = S390_ALIGN(sz->stack_size+sz->local_size,
1334 S390_STACK_ALIGNMENT);
1335 return (cinfo);
1336 }
1337
1338 /*========================= End of Function ========================*/
1339
1340 /*------------------------------------------------------------------*/
1341 /* */
1342 /* Name - mono_arch_allocate_vars */
1343 /* */
1344 /* Function - Set var information according to the calling */
1345 /* convention for S/390. The local var stuff should */
1346 /* most likely be split in another method. */
1347 /* */
1348 /* Parameter - @m - Compile unit. */
1349 /* */
1350 /*------------------------------------------------------------------*/
1351
1352 void
1353 mono_arch_allocate_vars (MonoCompile *m)
1354 {
1355 MonoMethodSignature *sig;
1356 MonoMethodHeader *header;
1357 MonoInst *inst;
1358 CallInfo *cinfo;
1359 size_data sz;
1360 int iParm, iVar, offset, size, align, curinst;
1361 int frame_reg = STK_BASE;
1362 int sArg, eArg;
1363
1364 header = ((MonoMethodNormal *)m->method)->header;
1365
1366 /*---------------------------------------------------------*/
1367 /* We use the frame register also for any method that has */
1368 /* filter clauses. This way, when the handlers are called, */
1369 /* the code will reference local variables using the frame */
1370 /* reg instead of the stack pointer: if we had to restore */
1371 /* the stack pointer, we'd corrupt the method frames that */
1372 /* are already on the stack (since filters get called */
1373 /* before stack unwinding happens) when the filter code */
1374 /* would call any method. */
1375 /*---------------------------------------------------------*/
1376 if ((m->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1377 frame_reg = s390_r11;
1378
1379 m->frame_reg = frame_reg;
1380
1381 if (frame_reg != STK_BASE)
1382 m->used_int_regs |= 1 << frame_reg;
1383
1384 sig = m->method->signature;
1385
1386 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1387
1388 if (cinfo->struct_ret) {
1389 m->ret->opcode = OP_REGVAR;
1390 m->ret->inst_c0 = s390_r2;
1391 } else {
1392 /* FIXME: handle long and FP values */
1393 switch (sig->ret->type) {
1394 case MONO_TYPE_VOID:
1395 break;
1396 default:
1397 m->ret->opcode = OP_REGVAR;
1398 m->ret->dreg = s390_r2;
1399 break;
1400 }
1401 }
1402
1403 /*--------------------------------------------------------------*/
1404 /* local vars are at a positive offset from the stack pointer */
1405 /* */
1406 /* also note that if the function uses alloca, we use s390_r11 */
1407 /* to point at the local variables. */
1408 /* add parameter area size for called functions */
1409 /*--------------------------------------------------------------*/
1410 offset = (m->param_area + S390_MINIMAL_STACK_SIZE);
1411
1412 if (cinfo->struct_ret) {
1413 inst = m->ret;
1414 offset = S390_ALIGN(offset, sizeof(gpointer));
1415 inst->inst_offset = offset;
1416 inst->opcode = OP_REGOFFSET;
1417 inst->inst_basereg = frame_reg;
1418 offset += sizeof(gpointer);
1419 }
1420
1421 if (sig->hasthis) {
1422 inst = m->varinfo [0];
1423 if (inst->opcode != OP_REGVAR) {
1424 inst->opcode = OP_REGOFFSET;
1425 inst->inst_basereg = frame_reg;
1426 offset = S390_ALIGN(offset, sizeof(gpointer));
1427 inst->inst_offset = offset;
1428 offset += sizeof (gpointer);
1429 }
1430 curinst = sArg = 1;
1431 } else {
1432 curinst = sArg = 0;
1433 }
1434
1435 eArg = sig->param_count + sArg;
1436
1437 for (iParm = sArg; iParm < eArg; ++iParm) {
1438 inst = m->varinfo [curinst];
1439 if (inst->opcode != OP_REGVAR) {
1440 switch (cinfo->args[iParm].regtype) {
1441 case RegTypeStructByAddr :
1442 inst->opcode = OP_S390_LOADARG;
1443 inst->inst_basereg = frame_reg;
1444 size = abs(cinfo->args[iParm].vtsize);
1445 offset = S390_ALIGN(offset, size);
1446 inst->inst_offset = offset;
1447 break;
1448 case RegTypeStructByVal :
1449 inst->opcode = OP_S390_ARGPTR;
1450 inst->inst_basereg = frame_reg;
1451 size = cinfo->args[iParm].size;
1452 offset = S390_ALIGN(offset, size);
1453 inst->inst_offset = offset;
1454 break;
1455 default :
1456 if (cinfo->args[iParm].reg != STK_BASE) {
1457 inst->opcode = OP_REGOFFSET;
1458 inst->inst_basereg = frame_reg;
1459 size = (cinfo->args[iParm].size < 8
1460 ? sizeof(long)
1461 : sizeof(long long));
1462 offset = S390_ALIGN(offset, size);
1463 inst->inst_offset = offset;
1464 } else {
1465 inst->opcode = OP_S390_STKARG;
1466 inst->inst_basereg = frame_reg;
1467 size = (cinfo->args[iParm].size < 4
1468 ? 4 - cinfo->args[iParm].size
1469 : 0);
1470 inst->inst_offset = cinfo->args[iParm].offset +
1471 size;
1472 inst->unused = 0;
1473 size = sizeof(long);
1474 }
1475 }
1476 offset += size;
1477 }
1478 curinst++;
1479 }
1480
1481 curinst = m->locals_start;
1482 for (iVar = curinst; iVar < m->num_varinfo; ++iVar) {
1483 inst = m->varinfo [iVar];
1484 if (inst->opcode == OP_REGVAR)
1485 continue;
1486
1487 /*--------------------------------------------------*/
1488 /* inst->unused indicates native sized value types, */
1489 /* this is used by the pinvoke wrappers when they */
1490 /* call functions returning structure */
1491 /*--------------------------------------------------*/
1492 if (inst->unused && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1493 size = mono_class_native_size (inst->inst_vtype->data.klass, &align);
1494 else
1495 size = mono_type_size (inst->inst_vtype, &align);
1496
1497 offset = S390_ALIGN(offset, align);
1498 inst->inst_offset = offset;
1499 inst->opcode = OP_REGOFFSET;
1500 inst->inst_basereg = frame_reg;
1501 offset += size;
1502 //DEBUG (g_print("allocating local %d to %d\n", iVar, inst->inst_offset));
1503 }
1504
1505 /*------------------------------------------------------*/
1506 /* Allow space for the trace method stack area if needed*/
1507 /*------------------------------------------------------*/
1508 if (mono_jit_trace_calls != NULL && mono_trace_eval (m))
1509 offset += S390_TRACE_STACK_SIZE;
1510
1511 /*------------------------------------------------------*/
1512 /* Reserve space to save LMF and caller saved registers */
1513 /*------------------------------------------------------*/
1514 if (m->method->save_lmf)
1515 offset += sizeof (MonoLMF);
1516
1517 /*------------------------------------------------------*/
1518 /* align the offset */
1519 /*------------------------------------------------------*/
1520 m->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1521 g_free(cinfo);
1522
1523 }
1524
1525 /*========================= End of Function ========================*/
1526
1527 /*------------------------------------------------------------------*/
1528 /* */
1529 /* Name - mono_arch_call_opcode */
1530 /* */
1531 /* Function - Take the arguments and generate the arch-specific */
1532 /* instructions to properly call the function. This */
1533 /* includes pushing, moving argments to the correct */
1534 /* etc. */
1535 /* */
1536 /* Note - FIXME: We need an alignment solution for */
1537 /* enter_method and mono_arch_call_opcode, currently */
1538 /* alignment in mono_arch_call_opcode is computed */
1539 /* without arch_get_argument_info. */
1540 /* */
1541 /*------------------------------------------------------------------*/
1542
1543 MonoCallInst*
1544 mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb,
1545 MonoCallInst *call, int is_virtual) {
1546 MonoInst *arg, *in;
1547 MonoMethodSignature *sig;
1548 int i, n, lParamArea;
1549 CallInfo *cinfo;
1550 ArgInfo *ainfo;
1551 size_data sz;
1552
1553 sig = call->signature;
1554 n = sig->param_count + sig->hasthis;
1555 DEBUG (g_print ("Call requires: %d parameters\n",n));
1556
1557 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1558
1559 call->stack_usage = cinfo->stack_usage;
1560 lParamArea = cinfo->stack_usage - S390_MINIMAL_STACK_SIZE;
1561 cfg->param_area = MAX (cfg->param_area, lParamArea);
1562 cfg->flags |= MONO_CFG_HAS_CALLS;
1563
1564 if (cinfo->struct_ret)
1565 call->used_iregs |= 1 << cinfo->struct_ret;
1566
1567 for (i = 0; i < n; ++i) {
1568 ainfo = cinfo->args + i;
1569 DEBUG (g_print ("Parameter %d - Register: %d Type: %d\n",
1570 i+1,ainfo->reg,ainfo->regtype));
1571 if (is_virtual && i == 0) {
1572 /* the argument will be attached to the call instrucion */
1573 in = call->args [i];
1574 call->used_iregs |= 1 << ainfo->reg;
1575 } else {
1576 MONO_INST_NEW (cfg, arg, OP_OUTARG);
1577 in = call->args [i];
1578 arg->cil_code = in->cil_code;
1579 arg->inst_left = in;
1580 arg->type = in->type;
1581 /* prepend, we'll need to reverse them later */
1582 arg->next = call->out_args;
1583 call->out_args = arg;
1584 if (ainfo->regtype == RegTypeGeneral) {
1585 arg->unused = ainfo->reg;
1586 call->used_iregs |= 1 << ainfo->reg;
1587 } else if (ainfo->regtype == RegTypeStructByAddr) {
1588 call->used_iregs |= 1 << ainfo->reg;
1589 arg->sreg1 = ainfo->reg;
1590 arg->opcode = OP_OUTARG_VT;
1591 arg->unused = -ainfo->vtsize;
1592 arg->inst_imm = ainfo->offset;
1593 arg->sreg2 = ainfo->offparm + S390_MINIMAL_STACK_SIZE;
1594 } else if (ainfo->regtype == RegTypeStructByVal) {
1595 if (ainfo->reg != STK_BASE) {
1596 call->used_iregs |= 1 << ainfo->reg;
1597 }
1598 arg->sreg1 = ainfo->reg;
1599 arg->opcode = OP_OUTARG_VT;
1600 arg->unused = ainfo->size;
1601 arg->inst_imm = ainfo->offset;
1602 arg->sreg2 = ainfo->offparm + S390_MINIMAL_STACK_SIZE;
1603 } else if (ainfo->regtype == RegTypeBase) {
1604 arg->opcode = OP_OUTARG;
1605 arg->unused = ainfo->reg | (ainfo->size << 8);
1606 arg->inst_imm = ainfo->offset;
1607 call->used_fregs |= 1 << ainfo->reg;
1608 } else if (ainfo->regtype == RegTypeFP) {
1609 arg->unused = ainfo->reg;
1610 call->used_fregs |= 1 << ainfo->reg;
1611 if (ainfo->size == 4) {
1612 MonoInst *conv;
1613 arg->opcode = OP_OUTARG_R4;
1614 MONO_INST_NEW (cfg, conv, OP_FCONV_TO_R4);
1615 conv->inst_left = arg->inst_left;
1616 arg->inst_left = conv;
1617 }
1618 else
1619 arg->opcode = OP_OUTARG_R8;
1620 } else {
1621 g_assert_not_reached ();
1622 }
1623 }
1624 }
1625 /*
1626 * Reverse the call->out_args list.
1627 */
1628 {
1629 MonoInst *prev = NULL, *list = call->out_args, *next;
1630 while (list) {
1631 next = list->next;
1632 list->next = prev;
1633 prev = list;
1634 list = next;
1635 }
1636 call->out_args = prev;
1637 }
1638
1639 g_free (cinfo);
1640 return call;
1641 }
1642
1643 /*========================= End of Function ========================*/
1644
1645 /*------------------------------------------------------------------*/
1646 /* */
1647 /* Name - mono_arch_instrument_mem_needs */
1648 /* */
1649 /* Function - Allow tracing to work with this interface (with */
1650 /* an optional argument). */
1651 /* */
1652 /*------------------------------------------------------------------*/
1653
1654 void
1655 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
1656 {
1657 /* no stack room needed now (may be needed for FASTCALL-trace support) */
1658 *stack = 0;
1659 /* split prolog-epilog requirements? */
1660 *code = 50; /* max bytes needed: check this number */
1661 }
1662
1663 /*========================= End of Function ========================*/
1664
1665 /*------------------------------------------------------------------*/
1666 /* */
1667 /* Name - mono_arch_instrument_prolog */
1668 /* */
1669 /* Function - Create an "instrumented" prolog. */
1670 /* */
1671 /*------------------------------------------------------------------*/
1672
1673 void*
1674 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
1675 gboolean enable_arguments)
1676 {
1677 guchar *code = p;
1678 int parmOffset,
1679 fpOffset;
1680
1681 parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1682 if (cfg->method->save_lmf)
1683 parmOffset -= sizeof(MonoLMF);
1684 fpOffset = parmOffset + (5*sizeof(long));
1685
1686 s390_stmg (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1687 s390_std (code, s390_f0, 0, STK_BASE, fpOffset);
1688 s390_std (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1689 s390_std (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1690 s390_basr (code, s390_r13, 0);
1691 s390_j (code, 10);
1692 s390_llong(code, cfg->method);
1693 s390_llong(code, func);
1694 s390_lg (code, s390_r2, 0, s390_r13, 4);
1695 s390_la (code, s390_r3, 0, STK_BASE, parmOffset);
1696 s390_lgr (code, s390_r4, STK_BASE);
1697 s390_aghi (code, s390_r4, cfg->stack_usage);
1698 s390_lg (code, s390_r1, 0, s390_r13, 12);
1699 s390_basr (code, s390_r14, s390_r1);
1700 s390_ld (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1701 s390_ld (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1702 s390_ld (code, s390_f0, 0, STK_BASE, fpOffset);
1703 s390_lmg (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1704
1705 return code;
1706 }
1707
1708 /*========================= End of Function ========================*/
1709
1710 /*------------------------------------------------------------------*/
1711 /* */
1712 /* Name - mono_arch_instrument_epilog */
1713 /* */
1714 /* Function - Create an epilog that will handle the returned */
1715 /* values used in instrumentation. */
1716 /* */
1717 /*------------------------------------------------------------------*/
1718
1719 void*
1720 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
1721 {
1722 guchar *code = p;
1723 int save_mode = SAVE_NONE,
1724 saveOffset;
1725 MonoMethod *method = cfg->method;
1726 int rtype = method->signature->ret->type;
1727
1728 saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1729 if (method->save_lmf)
1730 saveOffset -= sizeof(MonoLMF);
1731
1732 handle_enum:
1733 switch (rtype) {
1734 case MONO_TYPE_VOID:
1735 /* special case string .ctor icall */
1736 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
1737 save_mode = SAVE_ONE;
1738 else
1739 save_mode = SAVE_NONE;
1740 break;
1741 case MONO_TYPE_I8:
1742 case MONO_TYPE_U8:
1743 save_mode = SAVE_TWO;
1744 break;
1745 case MONO_TYPE_R4:
1746 case MONO_TYPE_R8:
1747 save_mode = SAVE_FP;
1748 break;
1749 case MONO_TYPE_VALUETYPE:
1750 if (method->signature->ret->data.klass->enumtype) {
1751 rtype = method->signature->ret->data.klass->enum_basetype->type;
1752 goto handle_enum;
1753 }
1754 save_mode = SAVE_STRUCT;
1755 break;
1756 default:
1757 save_mode = SAVE_ONE;
1758 break;
1759 }
1760
1761 switch (save_mode) {
1762 case SAVE_TWO:
1763 s390_stg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1764 if (enable_arguments)
1765 s390_lgr (code, s390_r3, s390_r2);
1766 break;
1767 case SAVE_ONE:
1768 s390_stg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1769 if (enable_arguments)
1770 s390_lgr (code, s390_r3, s390_r2);
1771 break;
1772 case SAVE_FP:
1773 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1774 if (enable_arguments) {
1775 /* FIXME: what reg? */
1776 s390_ldr (code, s390_f2, s390_f0);
1777 s390_lg (code, s390_r3, 0, cfg->frame_reg, saveOffset);
1778 }
1779 break;
1780 case SAVE_STRUCT:
1781 s390_stg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1782 if (enable_arguments)
1783 s390_lg (code, s390_r3, 0, cfg->frame_reg,
1784 S390_MINIMAL_STACK_SIZE+cfg->param_area);
1785 break;
1786 case SAVE_NONE:
1787 default:
1788 break;
1789 }
1790
1791 s390_basr (code, s390_r13, 0);
1792 s390_j (code, 10);
1793 s390_llong(code, cfg->method);
1794 s390_llong(code, func);
1795 s390_lg (code, s390_r2, 0, s390_r13, 4);
1796 s390_lg (code, s390_r1, 0, s390_r13, 12);
1797 s390_basr (code, s390_r14, s390_r1);
1798
1799 switch (save_mode) {
1800 case SAVE_TWO:
1801 s390_lg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1802 break;
1803 case SAVE_ONE:
1804 s390_lg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1805 break;
1806 case SAVE_FP:
1807 s390_ld (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1808 break;
1809 case SAVE_STRUCT:
1810 s390_lg (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1811 break;
1812 case SAVE_NONE:
1813 default:
1814 break;
1815 }
1816
1817 return code;
1818 }
1819
1820 /*========================= End of Function ========================*/
1821
1822 /*------------------------------------------------------------------*/
1823 /* */
1824 /* Name - peephole_pass */
1825 /* */
1826 /* Function - Form a peephole pass at the code looking for */
1827 /* simple optimizations. */
1828 /* */
1829 /*------------------------------------------------------------------*/
1830
1831 static void
1832 peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
1833 {
1834 MonoInst *ins, *last_ins = NULL;
1835 ins = bb->code;
1836
1837 while (ins) {
1838
1839 switch (ins->opcode) {
1840 case OP_MUL_IMM:
1841 /* remove unnecessary multiplication with 1 */
1842 if (ins->inst_imm == 1) {
1843 if (ins->dreg != ins->sreg1) {
1844 ins->opcode = OP_MOVE;
1845 } else {
1846 last_ins->next = ins->next;
1847 ins = ins->next;
1848 continue;
1849 }
1850 }
1851 break;
1852 case OP_LOAD_MEMBASE:
1853 case OP_LOADI4_MEMBASE:
1854 /*
1855 * OP_STORE_MEMBASE_REG reg, offset(basereg)
1856 * OP_LOAD_MEMBASE offset(basereg), reg
1857 */
1858 if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG
1859 || last_ins->opcode == OP_STORE_MEMBASE_REG) &&
1860 ins->inst_basereg == last_ins->inst_destbasereg &&
1861 ins->inst_offset == last_ins->inst_offset) {
1862 if (ins->dreg == last_ins->sreg1) {
1863 last_ins->next = ins->next;
1864 ins = ins->next;
1865 continue;
1866 } else {
1867 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1868 ins->opcode = OP_MOVE;
1869 ins->sreg1 = last_ins->sreg1;
1870 }
1871
1872 /*
1873 * Note: reg1 must be different from the basereg in the second load
1874 * OP_LOAD_MEMBASE offset(basereg), reg1
1875 * OP_LOAD_MEMBASE offset(basereg), reg2
1876 * -->
1877 * OP_LOAD_MEMBASE offset(basereg), reg1
1878 * OP_MOVE reg1, reg2
1879 */
1880 } if (last_ins && (last_ins->opcode == OP_LOADI4_MEMBASE
1881 || last_ins->opcode == OP_LOAD_MEMBASE) &&
1882 ins->inst_basereg != last_ins->dreg &&
1883 ins->inst_basereg == last_ins->inst_basereg &&
1884 ins->inst_offset == last_ins->inst_offset) {
1885
1886 if (ins->dreg == last_ins->dreg) {
1887 last_ins->next = ins->next;
1888 ins = ins->next;
1889 continue;
1890 } else {
1891 ins->opcode = OP_MOVE;
1892 ins->sreg1 = last_ins->dreg;
1893 }
1894 }
1895 break;
1896 case OP_LOADU1_MEMBASE:
1897 case OP_LOADI1_MEMBASE:
1898 if (last_ins && (last_ins->opcode == OP_STOREI1_MEMBASE_REG) &&
1899 ins->inst_basereg == last_ins->inst_destbasereg &&
1900 ins->inst_offset == last_ins->inst_offset) {
1901 if (ins->dreg == last_ins->sreg1) {
1902 last_ins->next = ins->next;
1903 ins = ins->next;
1904 continue;
1905 } else {
1906 ins->opcode = OP_MOVE;
1907 ins->sreg1 = last_ins->sreg1;
1908 }
1909 }
1910 break;
1911 case OP_LOADU2_MEMBASE:
1912 case OP_LOADI2_MEMBASE:
1913 if (last_ins && (last_ins->opcode == OP_STOREI2_MEMBASE_REG) &&
1914 ins->inst_basereg == last_ins->inst_destbasereg &&
1915 ins->inst_offset == last_ins->inst_offset) {
1916 if (ins->dreg == last_ins->sreg1) {
1917 last_ins->next = ins->next;
1918 ins = ins->next;
1919 continue;
1920 } else {
1921 ins->opcode = OP_MOVE;
1922 ins->sreg1 = last_ins->sreg1;
1923 }
1924 }
1925 break;
1926 case CEE_CONV_I4:
1927 case CEE_CONV_U4:
1928 case OP_MOVE:
1929 /*
1930 * OP_MOVE reg, reg
1931 */
1932 if (ins->dreg == ins->sreg1) {
1933 if (last_ins)
1934 last_ins->next = ins->next;
1935 ins = ins->next;
1936 continue;
1937 }
1938 /*
1939 * OP_MOVE sreg, dreg
1940 * OP_MOVE dreg, sreg
1941 */
1942 if (last_ins && last_ins->opcode == OP_MOVE &&
1943 ins->sreg1 == last_ins->dreg &&
1944 ins->dreg == last_ins->sreg1) {
1945 last_ins->next = ins->next;
1946 ins = ins->next;
1947 continue;
1948 }
1949 break;
1950 }
1951 last_ins = ins;
1952 ins = ins->next;
1953 }
1954 bb->last_ins = last_ins;
1955 }
1956
1957 /*========================= End of Function ========================*/
1958
1959 /*------------------------------------------------------------------*/
1960 /* */
1961 /* Name - mono_spillvar_offset */
1962 /* */
1963 /* Function - Returns the offset used by spillvar. It allocates */
1964 /* a new spill variable if necessary. */
1965 /* */
1966 /*------------------------------------------------------------------*/
1967
1968 static int
1969 mono_spillvar_offset (MonoCompile *cfg, int spillvar)
1970 {
1971 MonoSpillInfo **si, *info;
1972 int i = 0;
1973
1974 si = &cfg->spill_info;
1975
1976 while (i <= spillvar) {
1977
1978 if (!*si) {
1979 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
1980 info->next = NULL;
1981 info->offset = cfg->stack_offset;
1982 cfg->stack_offset += sizeof (gpointer);
1983 }
1984
1985 if (i == spillvar)
1986 return (*si)->offset;
1987
1988 i++;
1989 si = &(*si)->next;
1990 }
1991
1992 g_assert_not_reached ();
1993 return 0;
1994 }
1995
1996 /*========================= End of Function ========================*/
1997
1998 /*------------------------------------------------------------------*/
1999 /* */
2000 /* Name - mono_spillvar_offset_float */
2001 /* */
2002 /* Function - */
2003 /* */
2004 /*------------------------------------------------------------------*/
2005
2006 static int
2007 mono_spillvar_offset_float (MonoCompile *cfg, int spillvar)
2008 {
2009 MonoSpillInfo **si, *info;
2010 int i = 0;
2011
2012 si = &cfg->spill_info_float;
2013
2014 while (i <= spillvar) {
2015
2016 if (!*si) {
2017 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
2018 info->next = NULL;
2019 cfg->stack_offset = S390_ALIGN(cfg->stack_offset, S390_STACK_ALIGNMENT);
2020 info->offset = cfg->stack_offset;
2021 cfg->stack_offset += sizeof (double);
2022 }
2023
2024 if (i == spillvar)
2025 return (*si)->offset;
2026
2027 i++;
2028 si = &(*si)->next;
2029 }
2030
2031 g_assert_not_reached ();
2032 return 0;
2033 }
2034
2035 /*========================= End of Function ========================*/
2036
2037 /*------------------------------------------------------------------*/
2038 /* */
2039 /* Name - print_ins */
2040 /* */
2041 /* Function - Decode and print the instruction for tracing. */
2042 /* */
2043 /*------------------------------------------------------------------*/
2044
2045 static void
2046 print_ins (int i, MonoInst *ins)
2047 {
2048 const char *spec = ins_spec [ins->opcode];
2049 g_print ("\t%-2d %s", i, mono_inst_name (ins->opcode));
2050 if (spec [MONO_INST_DEST]) {
2051 if (ins->dreg >= MONO_MAX_IREGS)
2052 g_print (" R%d <-", ins->dreg);
2053 else
2054 g_print (" %s <-", mono_arch_regname (ins->dreg));
2055 }
2056 if (spec [MONO_INST_SRC1]) {
2057 if (ins->sreg1 >= MONO_MAX_IREGS)
2058 g_print (" R%d", ins->sreg1);
2059 else
2060 g_print (" %s", mono_arch_regname (ins->sreg1));
2061 }
2062 if (spec [MONO_INST_SRC2]) {
2063 if (ins->sreg2 >= MONO_MAX_IREGS)
2064 g_print (" R%d", ins->sreg2);
2065 else
2066 g_print (" %s", mono_arch_regname (ins->sreg2));
2067 }
2068 if (spec [MONO_INST_CLOB])
2069 g_print (" clobbers: %c", spec [MONO_INST_CLOB]);
2070 g_print ("\n");
2071 }
2072
2073 /*========================= End of Function ========================*/
2074
2075 /*------------------------------------------------------------------*/
2076 /* */
2077 /* Name - print_regtrack. */
2078 /* */
2079 /* Function - */
2080 /* */
2081 /*------------------------------------------------------------------*/
2082
2083 static void
2084 print_regtrack (RegTrack *t, int num)
2085 {
2086 int i;
2087 char buf [32];
2088 const char *r;
2089
2090 for (i = 0; i < num; ++i) {
2091 if (!t [i].born_in)
2092 continue;
2093 if (i >= MONO_MAX_IREGS) {
2094 g_snprintf (buf, sizeof(buf), "R%d", i);
2095 r = buf;
2096 } else
2097 r = mono_arch_regname (i);
2098 g_print ("liveness: %s [%d - %d]\n", r, t [i].born_in, t[i].last_use);
2099 }
2100 }
2101
2102 /*========================= End of Function ========================*/
2103
2104 /*------------------------------------------------------------------*/
2105 /* */
2106 /* Name - inst_list_prepend */
2107 /* */
2108 /* Function - Prepend an instruction to the list. */
2109 /* */
2110 /*------------------------------------------------------------------*/
2111
2112 static inline InstList*
2113 inst_list_prepend (MonoMemPool *pool, InstList *list, MonoInst *data)
2114 {
2115 InstList *item = mono_mempool_alloc (pool, sizeof (InstList));
2116 item->data = data;
2117 item->prev = NULL;
2118 item->next = list;
2119 if (list)
2120 list->prev = item;
2121 return item;
2122 }
2123
2124 /*========================= End of Function ========================*/
2125
2126 /*------------------------------------------------------------------*/
2127 /* */
2128 /* Name - get_register_force_spilling */
2129 /* */
2130 /* Function - Force the spilling of the variable in the */
2131 /* symbolic register 'reg'. */
2132 /* */
2133 /*------------------------------------------------------------------*/
2134
2135 static int
2136 get_register_force_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, int reg)
2137 {
2138 MonoInst *load;
2139 int i, sel, spill;
2140
2141 sel = cfg->rs->iassign [reg];
2142 i = reg;
2143 spill = ++cfg->spill_count;
2144 cfg->rs->iassign [i] = -spill - 1;
2145 mono_regstate_free_int (cfg->rs, sel);
2146 /*----------------------------------------------------------*/
2147 /* we need to create a spill var and insert a load to sel */
2148 /* after the current instruction */
2149 /*----------------------------------------------------------*/
2150 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2151 load->dreg = sel;
2152 load->inst_basereg = cfg->frame_reg;
2153 load->inst_offset = mono_spillvar_offset (cfg, spill);
2154 if (item->prev) {
2155 while (ins->next != item->prev->data)
2156 ins = ins->next;
2157 }
2158 load->next = ins->next;
2159 ins->next = load;
2160 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n",
2161 spill, load->inst_offset, i, mono_arch_regname (sel)));
2162 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2163 g_assert (i == sel);
2164
2165 return sel;
2166 }
2167
2168 /*========================= End of Function ========================*/
2169
2170 /*------------------------------------------------------------------*/
2171 /* */
2172 /* Name - get_register_spilling */
2173 /* */
2174 /* Function - */
2175 /* */
2176 /*------------------------------------------------------------------*/
2177
2178 static int
2179 get_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2180 {
2181 MonoInst *load;
2182 int i, sel, spill;
2183
2184 DEBUG (g_print ("start regmask to assign R%d: 0x%08x (R%d <- R%d R%d)\n", reg, regmask, ins->dreg, ins->sreg1, ins->sreg2));
2185 /* exclude the registers in the current instruction */
2186 if (reg != ins->sreg1 &&
2187 (reg_is_freeable (ins->sreg1) ||
2188 (ins->sreg1 >= MONO_MAX_IREGS &&
2189 cfg->rs->iassign [ins->sreg1] >= 0))) {
2190 if (ins->sreg1 >= MONO_MAX_IREGS)
2191 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg1]);
2192 else
2193 regmask &= ~ (1 << ins->sreg1);
2194 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2195 }
2196 if (reg != ins->sreg2 &&
2197 (reg_is_freeable (ins->sreg2) ||
2198 (ins->sreg2 >= MONO_MAX_IREGS &&
2199 cfg->rs->iassign [ins->sreg2] >= 0))) {
2200 if (ins->sreg2 >= MONO_MAX_IREGS)
2201 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg2]);
2202 else
2203 regmask &= ~ (1 << ins->sreg2);
2204 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2205 }
2206 if (reg != ins->dreg && reg_is_freeable (ins->dreg)) {
2207 regmask &= ~ (1 << ins->dreg);
2208 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2209 }
2210
2211 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2212 g_assert (regmask); /* need at least a register we can free */
2213 sel = -1;
2214 /* we should track prev_use and spill the register that's farther */
2215 for (i = 0; i < MONO_MAX_IREGS; ++i) {
2216 if (regmask & (1 << i)) {
2217 sel = i;
2218 DEBUG (g_print ("selected register %s has assignment %d\n", mono_arch_regname (sel), cfg->rs->iassign [sel]));
2219 break;
2220 }
2221 }
2222 i = cfg->rs->isymbolic [sel];
2223 spill = ++cfg->spill_count;
2224 cfg->rs->iassign [i] = -spill - 1;
2225 mono_regstate_free_int (cfg->rs, sel);
2226 /* we need to create a spill var and insert a load to sel after the current instruction */
2227 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2228 load->dreg = sel;
2229 load->inst_basereg = cfg->frame_reg;
2230 load->inst_offset = mono_spillvar_offset (cfg, spill);
2231 if (item->prev) {
2232 while (ins->next != item->prev->data)
2233 ins = ins->next;
2234 }
2235 load->next = ins->next;
2236 ins->next = load;
2237 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2238 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2239 g_assert (i == sel);
2240
2241 return sel;
2242 }
2243
2244 /*========================= End of Function ========================*/
2245
2246 /*------------------------------------------------------------------*/
2247 /* */
2248 /* Name - get_float_register_spilling */
2249 /* */
2250 /* Function - */
2251 /* */
2252 /*------------------------------------------------------------------*/
2253
2254 static int
2255 get_float_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2256 {
2257 MonoInst *load;
2258 int i, sel, spill;
2259
2260 DEBUG (g_print ("start regmask to assign R%d: 0x%08x (R%d <- R%d R%d)\n", reg, regmask, ins->dreg, ins->sreg1, ins->sreg2));
2261 /* exclude the registers in the current instruction */
2262 if (reg != ins->sreg1 &&
2263 (freg_is_freeable (ins->sreg1) ||
2264 (ins->sreg1 >= MONO_MAX_FREGS &&
2265 cfg->rs->fassign [ins->sreg1] >= 0))) {
2266 if (ins->sreg1 >= MONO_MAX_FREGS)
2267 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg1]);
2268 else
2269 regmask &= ~ (1 << ins->sreg1);
2270 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2271 }
2272 if (reg != ins->sreg2 &&
2273 (freg_is_freeable (ins->sreg2) ||
2274 (ins->sreg2 >= MONO_MAX_FREGS &&
2275 cfg->rs->fassign [ins->sreg2] >= 0))) {
2276 if (ins->sreg2 >= MONO_MAX_FREGS)
2277 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg2]);
2278 else
2279 regmask &= ~ (1 << ins->sreg2);
2280 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2281 }
2282 if (reg != ins->dreg && freg_is_freeable (ins->dreg)) {
2283 regmask &= ~ (1 << ins->dreg);
2284 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2285 }
2286
2287 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2288 g_assert (regmask); /* need at least a register we can free */
2289 sel = -1;
2290 /* we should track prev_use and spill the register that's farther */
2291 for (i = 0; i < MONO_MAX_FREGS; ++i) {
2292 if (regmask & (1 << i)) {
2293 sel = i;
2294 DEBUG (g_print ("selected register %s has assignment %d\n",
2295 mono_arch_regname (sel), cfg->rs->fassign [sel]));
2296 break;
2297 }
2298 }
2299 i = cfg->rs->fsymbolic [sel];
2300 spill = ++cfg->spill_count;
2301 cfg->rs->fassign [i] = -spill - 1;
2302 mono_regstate_free_float(cfg->rs, sel);
2303 /* we need to create a spill var and insert a load to sel after the current instruction */
2304 MONO_INST_NEW (cfg, load, OP_LOADR8_MEMBASE);
2305 load->dreg = sel;
2306 load->inst_basereg = cfg->frame_reg;
2307 load->inst_offset = mono_spillvar_offset_float (cfg, spill);
2308 if (item->prev) {
2309 while (ins->next != item->prev->data)
2310 ins = ins->next;
2311 }
2312 load->next = ins->next;
2313 ins->next = load;
2314 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2315 i = mono_regstate_alloc_float (cfg->rs, 1 << sel);
2316 g_assert (i == sel);
2317
2318 return sel;
2319 }
2320
2321 /*========================= End of Function ========================*/
2322
2323 /*------------------------------------------------------------------*/
2324 /* */
2325 /* Name - create_copy_ins */
2326 /* */
2327 /* Function - Create an instruction to copy from reg to reg. */
2328 /* */
2329 /*------------------------------------------------------------------*/
2330
2331 static MonoInst*
2332 create_copy_ins (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2333 {
2334 MonoInst *copy;
2335 MONO_INST_NEW (cfg, copy, OP_MOVE);
2336 copy->dreg = dest;
2337 copy->sreg1 = src;
2338 if (ins) {
2339 copy->next = ins->next;
2340 ins->next = copy;
2341 }
2342 DEBUG (g_print ("\tforced copy from %s to %s\n",
2343 mono_arch_regname (src), mono_arch_regname (dest)));
2344 return copy;
2345 }
2346
2347 /*========================= End of Function ========================*/
2348
2349 /*------------------------------------------------------------------*/
2350 /* */
2351 /* Name - create_copy_ins_float */
2352 /* */
2353 /* Function - Create an instruction to copy from float reg to */
2354 /* float reg. */
2355 /* */
2356 /*------------------------------------------------------------------*/
2357
2358 static MonoInst*
2359 create_copy_ins_float (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2360 {
2361 MonoInst *copy;
2362 MONO_INST_NEW (cfg, copy, OP_FMOVE);
2363 copy->dreg = dest;
2364 copy->sreg1 = src;
2365 if (ins) {
2366 copy->next = ins->next;
2367 ins->next = copy;
2368 }
2369 DEBUG (g_print ("\tforced copy from %s to %s\n",
2370 mono_arch_regname (src), mono_arch_regname (dest)));
2371 return copy;
2372 }
2373
2374 /*========================= End of Function ========================*/
2375
2376 /*------------------------------------------------------------------*/
2377 /* */
2378 /* Name - create_spilled_store */
2379 /* */
2380 /* Function - Spill register to storage. */
2381 /* */
2382 /*------------------------------------------------------------------*/
2383
2384 static MonoInst*
2385 create_spilled_store (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2386 {
2387 MonoInst *store;
2388 MONO_INST_NEW (cfg, store, OP_STORE_MEMBASE_REG);
2389 store->sreg1 = reg;
2390 store->inst_destbasereg = cfg->frame_reg;
2391 store->inst_offset = mono_spillvar_offset (cfg, spill);
2392 if (ins) {
2393 store->next = ins->next;
2394 ins->next = store;
2395 }
2396 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2397 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2398 return store;
2399 }
2400
2401 /*========================= End of Function ========================*/
2402
2403 /*------------------------------------------------------------------*/
2404 /* */
2405 /* Name - create_spilled_store_float */
2406 /* */
2407 /* Function - Spill floating point register to storage. */
2408 /* */
2409 /*------------------------------------------------------------------*/
2410
2411 static MonoInst*
2412 create_spilled_store_float (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2413 {
2414 MonoInst *store;
2415 MONO_INST_NEW (cfg, store, OP_STORER8_MEMBASE_REG);
2416 store->sreg1 = reg;
2417 store->inst_destbasereg = cfg->frame_reg;
2418 store->inst_offset = mono_spillvar_offset_float (cfg, spill);
2419 if (ins) {
2420 store->next = ins->next;
2421 ins->next = store;
2422 }
2423 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2424 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2425 return store;
2426 }
2427
2428 /*========================= End of Function ========================*/
2429
2430 /*------------------------------------------------------------------*/
2431 /* */
2432 /* Name - insert_before_ins */
2433 /* */
2434 /* Function - Insert an instruction before another. */
2435 /* */
2436 /*------------------------------------------------------------------*/
2437
2438 static void
2439 insert_before_ins (MonoInst *ins, InstList *item, MonoInst* to_insert)
2440 {
2441 MonoInst *prev;
2442 g_assert (item->next);
2443 prev = item->next->data;
2444
2445 while (prev->next != ins)
2446 prev = prev->next;
2447 to_insert->next = ins;
2448 prev->next = to_insert;
2449 /*
2450 * needed otherwise in the next instruction we can add an ins to the
2451 * end and that would get past this instruction.
2452 */
2453 item->data = to_insert;
2454 }
2455
2456 /*========================= End of Function ========================*/
2457
2458 /*------------------------------------------------------------------*/
2459 /* */
2460 /* Name - alloc_int_reg */
2461 /* */
2462 /* Function - Allocate a general register. */
2463 /* */
2464 /*------------------------------------------------------------------*/
2465
2466 static int
2467 alloc_int_reg (MonoCompile *cfg, InstList *curinst, MonoInst *ins, int sym_reg, guint32 allow_mask)
2468 {
2469 int val = cfg->rs->iassign [sym_reg];
2470 DEBUG (g_print ("Allocating a general register for %d (%d) with mask %08x\n",val,sym_reg,allow_mask));
2471 if (val < 0) {
2472 int spill = 0;
2473 if (val < -1) {
2474 /* the register gets spilled after this inst */
2475 spill = -val -1;
2476 }
2477 val = mono_regstate_alloc_int (cfg->rs, allow_mask);
2478 if (val < 0)
2479 val = get_register_spilling (cfg, curinst, ins, allow_mask, sym_reg);
2480 cfg->rs->iassign [sym_reg] = val;
2481 /* add option to store before the instruction for src registers */
2482 if (spill)
2483 create_spilled_store (cfg, spill, val, sym_reg, ins);
2484 }
2485 DEBUG (g_print ("Allocated %d for %d\n",val,sym_reg));
2486 cfg->rs->isymbolic [val] = sym_reg;
2487 return val;
2488 }
2489
2490 /*========================= End of Function ========================*/
2491
2492 /*------------------------------------------------------------------*/
2493 /* */
2494 /* Name - mono_arch_local_regalloc. */
2495 /* */
2496 /* Function - We first scan the list of instructions and we */
2497 /* save the liveness information of each register */
2498 /* (when the register is first used, when its value */
2499 /* is set etc.). We also reverse the list of instr- */
2500 /* uctions (in the InstList list) because assigning */
2501 /* registers backwards allows for more tricks to be */
2502 /* used. */
2503 /* */
2504 /*------------------------------------------------------------------*/
2505
2506 void
2507 mono_arch_local_regalloc (MonoCompile *cfg, MonoBasicBlock *bb)
2508 {
2509 MonoInst *ins;
2510 MonoRegState *rs = cfg->rs;
2511 int i, val;
2512 RegTrack *reginfo, *reginfof;
2513 RegTrack *reginfo1, *reginfo2, *reginfod;
2514 InstList *tmp, *reversed = NULL;
2515 const char *spec;
2516 guint32 src1_mask, src2_mask, dest_mask;
2517 guint32 cur_iregs, cur_fregs;
2518
2519 if (!bb->code)
2520 return;
2521 rs->next_vireg = bb->max_ireg;
2522 rs->next_vfreg = bb->max_freg;
2523 mono_regstate_assign (rs);
2524 reginfo = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vireg);
2525 reginfof = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vfreg);
2526 rs->ifree_mask = S390_CALLER_REGS;
2527 rs->ffree_mask = S390_CALLER_FREGS;
2528
2529 ins = bb->code;
2530 i = 1;
2531 DEBUG (g_print ("LOCAL regalloc: basic block: %d\n", bb->block_num));
2532 /* forward pass on the instructions to collect register liveness info */
2533 while (ins) {
2534 spec = ins_spec [ins->opcode];
2535 DEBUG (print_ins (i, ins));
2536 if (spec [MONO_INST_CLOB] == 'c') {
2537 MonoCallInst * call = (MonoCallInst*)ins;
2538 int j;
2539 }
2540 if (spec [MONO_INST_SRC1]) {
2541 if (spec [MONO_INST_SRC1] == 'f')
2542 reginfo1 = reginfof;
2543 else
2544 reginfo1 = reginfo;
2545 reginfo1 [ins->sreg1].prev_use = reginfo1 [ins->sreg1].last_use;
2546 reginfo1 [ins->sreg1].last_use = i;
2547 } else {
2548 ins->sreg1 = -1;
2549 }
2550 if (spec [MONO_INST_SRC2]) {
2551 if (spec [MONO_INST_SRC2] == 'f')
2552 reginfo2 = reginfof;
2553 else
2554 reginfo2 = reginfo;
2555 reginfo2 [ins->sreg2].prev_use = reginfo2 [ins->sreg2].last_use;
2556 reginfo2 [ins->sreg2].last_use = i;
2557 } else {
2558 ins->sreg2 = -1;
2559 }
2560 if (spec [MONO_INST_DEST]) {
2561 if (spec [MONO_INST_DEST] == 'f')
2562 reginfod = reginfof;
2563 else
2564 reginfod = reginfo;
2565 if (spec [MONO_INST_DEST] != 'b') /* it's not just a base register */
2566 reginfod [ins->dreg].killed_in = i;
2567 reginfod [ins->dreg].prev_use = reginfod [ins->dreg].last_use;
2568 reginfod [ins->dreg].last_use = i;
2569 if (reginfod [ins->dreg].born_in == 0 || reginfod [ins->dreg].born_in > i)
2570 reginfod [ins->dreg].born_in = i;
2571 if (spec [MONO_INST_DEST] == 'l') {
2572 /* result in eax:edx, the virtual register is allocated sequentially */
2573 reginfod [ins->dreg + 1].prev_use = reginfod [ins->dreg + 1].last_use;
2574 reginfod [ins->dreg + 1].last_use = i;
2575 if (reginfod [ins->dreg + 1].born_in == 0 || reginfod [ins->dreg + 1].born_in > i)
2576 reginfod [ins->dreg + 1].born_in = i;
2577 }
2578 } else {
2579 ins->dreg = -1;
2580 }
2581 reversed = inst_list_prepend (cfg->mempool, reversed, ins);
2582 ++i;
2583 ins = ins->next;
2584 }
2585
2586 cur_iregs = S390_CALLER_REGS;
2587 cur_fregs = S390_CALLER_FREGS;
2588
2589 DEBUG (print_regtrack (reginfo, rs->next_vireg));
2590 DEBUG (print_regtrack (reginfof, rs->next_vfreg));
2591 tmp = reversed;
2592 while (tmp) {
2593 int prev_dreg, prev_sreg1, prev_sreg2;
2594 --i;
2595 ins = tmp->data;
2596 spec = ins_spec [ins->opcode];
2597 DEBUG (g_print ("processing:"));
2598 DEBUG (print_ins (i, ins));
2599 /* make the register available for allocation: FIXME add fp reg */
2600 if (ins->opcode == OP_SETREG || ins->opcode == OP_SETREGIMM) {
2601 cur_iregs |= 1 << ins->dreg;
2602 DEBUG (g_print ("adding %d to cur_iregs\n", ins->dreg));
2603 } else if (ins->opcode == OP_SETFREG) {
2604 cur_fregs |= 1 << ins->dreg;
2605 DEBUG (g_print ("adding %d to cur_fregs\n", ins->dreg));
2606 } else if (spec [MONO_INST_CLOB] == 'c') {
2607 MonoCallInst *cinst = (MonoCallInst*)ins;
2608 DEBUG (g_print ("excluding regs 0x%x from cur_iregs (0x%x)\n",
2609 cinst->used_iregs, cur_iregs));
2610 DEBUG (g_print ("excluding fpregs 0x%x from cur_fregs (0x%x)\n",
2611 cinst->used_fregs, cur_fregs));
2612 cur_iregs &= ~cinst->used_iregs;
2613 cur_fregs &= ~cinst->used_fregs;
2614 DEBUG (g_print ("available cur_iregs: 0x%x\n", cur_iregs));
2615 DEBUG (g_print ("available cur_fregs: 0x%x\n", cur_fregs));
2616 /*------------------------------------------------------------*/
2617 /* registers used by the calling convention are excluded from */
2618 /* allocation: they will be selectively enabled when they are */
2619 /* assigned by the special SETREG opcodes. */
2620 /*------------------------------------------------------------*/
2621 }
2622 dest_mask = src1_mask = src2_mask = cur_iregs;
2623 /*------------------------------------------------------*/
2624 /* update for use with FP regs... */
2625 /*------------------------------------------------------*/
2626 if (spec [MONO_INST_DEST] == 'f') {
2627 dest_mask = cur_fregs;
2628 if (ins->dreg >= MONO_MAX_FREGS) {
2629 val = rs->fassign [ins->dreg];
2630 prev_dreg = ins->dreg;
2631 if (val < 0) {
2632 int spill = 0;
2633 if (val < -1) {
2634 /* the register gets spilled after this inst */
2635 spill = -val -1;
2636 }
2637 val = mono_regstate_alloc_float (rs, dest_mask);
2638 if (val < 0)
2639 val = get_float_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2640 rs->fassign [ins->dreg] = val;
2641 if (spill)
2642 create_spilled_store_float (cfg, spill, val, prev_dreg, ins);
2643 }
2644 DEBUG (g_print ("\tassigned dreg %s to dest R%d\n",
2645 mono_arch_regname (val), ins->dreg));
2646 rs->fsymbolic [val] = prev_dreg;
2647 ins->dreg = val;
2648 if (spec [MONO_INST_CLOB] == 'c' && ins->dreg != s390_f0) {
2649 /* this instruction only outputs to s390_f0, need to copy */
2650 create_copy_ins_float (cfg, ins->dreg, s390_f0, ins);
2651 }
2652 } else {
2653 prev_dreg = -1;
2654 }
2655 if (freg_is_freeable (ins->dreg) && prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i || !(cur_fregs & (1 << ins->dreg)))) {
2656 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2657 mono_regstate_free_float (rs, ins->dreg);
2658 }
2659 } else if (ins->dreg >= MONO_MAX_IREGS) {
2660 val = rs->iassign [ins->dreg];
2661 prev_dreg = ins->dreg;
2662 if (val < 0) {
2663 int spill = 0;
2664 if (val < -1) {
2665 /* the register gets spilled after this inst */
2666 spill = -val -1;
2667 }
2668 val = mono_regstate_alloc_int (rs, dest_mask);
2669 if (val < 0)
2670 val = get_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2671 rs->iassign [ins->dreg] = val;
2672 if (spill)
2673 create_spilled_store (cfg, spill, val, prev_dreg, ins);
2674 }
2675 DEBUG (g_print ("\tassigned dreg %s to dest R%d (prev: R%d)\n",
2676 mono_arch_regname (val), ins->dreg, prev_dreg));
2677 rs->isymbolic [val] = prev_dreg;
2678 ins->dreg = val;
2679 if (spec [MONO_INST_DEST] == 'l') {
2680 int hreg = prev_dreg + 1;
2681 val = rs->iassign [hreg];
2682 if (val < 0) {
2683 int spill = 0;
2684 if (val < -1) {
2685 /* the register gets spilled after this inst */
2686 spill = -val -1;
2687 }
2688 val = mono_regstate_alloc_int (rs, dest_mask);
2689 if (val < 0)
2690 val = get_register_spilling (cfg, tmp, ins, dest_mask, hreg);
2691 rs->iassign [hreg] = val;
2692 if (spill)
2693 create_spilled_store (cfg, spill, val, hreg, ins);
2694 }
2695 DEBUG (g_print ("\tassigned hreg %s to dest R%d\n", mono_arch_regname (val), hreg));
2696 rs->isymbolic [val] = hreg;
2697 // #if 0
2698 /* FIXME:? ins->dreg = val; */
2699 if (ins->dreg == s390_r3) {
2700 if (val != s390_r2)
2701 create_copy_ins (cfg, val, s390_r2, ins);
2702 } else if (ins->dreg == s390_r2) {
2703 if (val == s390_r3) {
2704 /* swap */
2705 create_copy_ins (cfg, s390_r3, s390_r0, ins);
2706 create_copy_ins (cfg, s390_r2, s390_r3, ins);
2707 create_copy_ins (cfg, s390_r0, s390_r2, ins);
2708 } else {
2709 /* two forced copies */
2710 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2711 create_copy_ins (cfg, val, s390_r2, ins);
2712 }
2713 } else {
2714 if (val == s390_r2) {
2715 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2716 } else {
2717 /* two forced copies */
2718 create_copy_ins (cfg, val, s390_r2, ins);
2719 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2720 }
2721 }
2722 // #endif
2723 if (reg_is_freeable (val) && hreg >= 0 && (reginfo [hreg].born_in >= i && !(cur_iregs & (1 << val)))) {
2724 DEBUG (g_print ("\tfreeable %s (R%d)\n", mono_arch_regname (val), hreg));
2725 mono_regstate_free_int (rs, val);
2726 }
2727 } else if (spec [MONO_INST_DEST] == 'a' && ins->dreg != s390_r2 && spec [MONO_INST_CLOB] != 'd') {
2728 /* this instruction only outputs to s390_r2, need to copy */
2729 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2730 }
2731 } else {
2732 prev_dreg = -1;
2733 }
2734 if (spec [MONO_INST_DEST] == 'f' &&
2735 freg_is_freeable (ins->dreg) &&
2736 prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i)) {
2737 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2738 mono_regstate_free_float (rs, ins->dreg);
2739 } else if (spec [MONO_INST_DEST] != 'f' &&
2740 reg_is_freeable (ins->dreg) &&
2741 prev_dreg >= 0 && (reginfo [prev_dreg].born_in >= i)) {
2742 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2743 mono_regstate_free_int (rs, ins->dreg);
2744 }
2745 if (spec [MONO_INST_SRC1] == 'f') {
2746 src1_mask = cur_fregs;
2747 if (ins->sreg1 >= MONO_MAX_FREGS) {
2748 val = rs->fassign [ins->sreg1];
2749 prev_sreg1 = ins->sreg1;
2750 if (val < 0) {
2751 int spill = 0;
2752 if (val < -1) {
2753 /* the register gets spilled after this inst */
2754 spill = -val -1;
2755 }
2756 //g_assert (val == -1); /* source cannot be spilled */
2757 val = mono_regstate_alloc_float (rs, src1_mask);
2758 if (val < 0)
2759 val = get_float_register_spilling (cfg, tmp, ins, src1_mask, ins->sreg1);
2760 rs->fassign [ins->sreg1] = val;
2761 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n", mono_arch_regname (val), ins->sreg1));
2762 if (spill) {
2763 MonoInst *store = create_spilled_store_float (cfg, spill, val, prev_sreg1, NULL);
2764 insert_before_ins (ins, tmp, store);
2765 }
2766 }
2767 rs->fsymbolic [val] = prev_sreg1;
2768 ins->sreg1 = val;
2769 } else {
2770 prev_sreg1 = -1;
2771 }
2772 } else if (ins->sreg1 >= MONO_MAX_IREGS) {
2773 val = rs->iassign [ins->sreg1];
2774 prev_sreg1 = ins->sreg1;
2775 if (val < 0) {
2776 int spill = 0;
2777 if (val < -1) {
2778 /* the register gets spilled after this inst */
2779 spill = -val -1;
2780 }
2781 val = mono_regstate_alloc_int (rs, src1_mask);
2782 if (val < 0)
2783 val = get_register_spilling (cfg, tmp, ins,
2784 src1_mask,
2785 ins->sreg1);
2786 rs->iassign [ins->sreg1] = val;
2787 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n",
2788 mono_arch_regname (val), ins->sreg1));
2789 if (spill) {
2790 MonoInst *store;
2791 store = create_spilled_store (cfg, spill, val,
2792 prev_sreg1, NULL);
2793 insert_before_ins (ins, tmp, store);
2794 }
2795 }
2796 rs->isymbolic [val] = prev_sreg1;
2797 ins->sreg1 = val;
2798 } else {
2799 prev_sreg1 = -1;
2800 }
2801 /*----------------------------------------------*/
2802 /* handle clobbering of sreg1 */
2803 /*----------------------------------------------*/
2804 if ((spec [MONO_INST_CLOB] == '1' ||
2805 spec [MONO_INST_CLOB] == 's') &&
2806 ins->dreg != ins->sreg1) {
2807 MonoInst *copy;
2808 copy = create_copy_ins (cfg, ins->dreg, ins->sreg1, NULL);
2809 DEBUG (g_print ("\tneed to copy sreg1 %s to dreg %s\n",
2810 mono_arch_regname (ins->sreg1),
2811 mono_arch_regname (ins->dreg)));
2812 if (ins->sreg2 == -1 || spec [MONO_INST_CLOB] == 's') {
2813 /* note: the copy is inserted before the current instruction! */
2814 insert_before_ins (ins, tmp, copy);
2815 /* we set sreg1 to dest as well */
2816 prev_sreg1 = ins->sreg1 = ins->dreg;
2817 } else {
2818 /* inserted after the operation */
2819 copy->next = ins->next;
2820 ins->next = copy;
2821 }
2822 }
2823
2824 if (spec [MONO_INST_SRC2] == 'f') {
2825 src2_mask = cur_fregs;
2826 if (ins->sreg2 >= MONO_MAX_FREGS) {
2827 val = rs->fassign [ins->sreg2];
2828 prev_sreg2 = ins->sreg2;
2829 if (val < 0) {
2830 int spill = 0;
2831 if (val < -1) {
2832 /* the register gets spilled after this inst */
2833 spill = -val -1;
2834 }
2835 val = mono_regstate_alloc_float (rs, src2_mask);
2836 if (val < 0)
2837 val = get_float_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2838 rs->fassign [ins->sreg2] = val;
2839 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2840 if (spill)
2841 create_spilled_store_float (cfg, spill, val, prev_sreg2, ins);
2842 }
2843 rs->fsymbolic [val] = prev_sreg2;
2844 ins->sreg2 = val;
2845 } else {
2846 prev_sreg2 = -1;
2847 }
2848 } else if (ins->sreg2 >= MONO_MAX_IREGS) {
2849 val = rs->iassign [ins->sreg2];
2850 prev_sreg2 = ins->sreg2;
2851 if (val < 0) {
2852 int spill = 0;
2853 if (val < -1) {
2854 /* the register gets spilled after this inst */
2855 spill = -val -1;
2856 }
2857 val = mono_regstate_alloc_int (rs, src2_mask);
2858 if (val < 0)
2859 val = get_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2860 rs->iassign [ins->sreg2] = val;
2861 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2862 if (spill)
2863 create_spilled_store (cfg, spill, val, prev_sreg2, ins);
2864 }
2865 rs->isymbolic [val] = prev_sreg2;
2866 ins->sreg2 = val;
2867 } else {
2868 prev_sreg2 = -1;
2869 }
2870
2871 if (spec [MONO_INST_CLOB] == 'c') {
2872 int j, s;
2873 guint32 clob_mask = S390_CALLER_REGS;
2874 for (j = 0; j < MONO_MAX_IREGS; ++j) {
2875 s = 1 << j;
2876 if ((clob_mask & s) && !(rs->ifree_mask & s) && j != ins->sreg1) {
2877 }
2878 }
2879 }
2880 tmp = tmp->next;
2881 }
2882 }
2883
2884 /*========================= End of Function ========================*/
2885
2886 /*------------------------------------------------------------------*/
2887 /* */
2888 /* Name - emit_float_to_int */
2889 /* */
2890 /* Function - Create instructions which will convert a floating */
2891 /* point value to integer. */
2892 /* */
2893 /*------------------------------------------------------------------*/
2894
2895 static guchar*
2896 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2897 {
2898 /* sreg is a float, dreg is an integer reg. */
2899 if (is_signed) {
2900 s390_cfdbr (code, dreg, 5, sreg);
2901 switch (size) {
2902 case 1:
2903 s390_lghi (code, s390_r0, 0);
2904 s390_lghi (code, s390_r13, 0xff);
2905 s390_ltgr (code, dreg, dreg);
2906 s390_jnl (code, 6);
2907 s390_lhi (code, s390_r0, 0x80);
2908 s390_ngr (code, dreg, s390_r13);
2909 s390_ogr (code, dreg, s390_r0);
2910 break;
2911 }
2912 } else {
2913 s390_basr (code, s390_r13, 0);
2914 s390_j (code, 10);
2915 s390_llong (code, 0x41e0000000000000);
2916 s390_llong (code, 0x41f0000000000000);
2917 s390_ldr (code, s390_f15, sreg);
2918 s390_cdb (code, s390_f15, 0, s390_r13, 0);
2919 s390_jl (code, 10);
2920 s390_sdb (code, s390_f15, 0, s390_r13, 8);
2921 s390_cfdbr (code, dreg, 7, s390_f15);
2922 s390_j (code, 6);
2923 s390_cfdbr (code, dreg, 5, sreg);
2924 switch (size) {
2925 case 1:
2926 s390_lghi (code, s390_r0, 0xff);
2927 s390_ngr (code, dreg, s390_r0);
2928 break;
2929 case 2:
2930 s390_lghi (code, s390_r0, -1);
2931 s390_srlg (code, s390_r0, s390_r0, 0, 16);
2932 s390_ngr (code, dreg, s390_r0);
2933 break;
2934 }
2935 }
2936 return code;
2937 }
2938
2939 /*========================= End of Function ========================*/
2940
2941 /*------------------------------------------------------------------*/
2942 /* */
2943 /* Name - mono_emit_stack_alloc */
2944 /* */
2945 /* Function - */
2946 /* */
2947 /*------------------------------------------------------------------*/
2948
2949 static unsigned char*
2950 mono_emit_stack_alloc (guchar *code, MonoInst* tree)
2951 {
2952 return code;
2953 }
2954
2955 /*========================= End of Function ========================*/
2956
2957 /*------------------------------------------------------------------*/
2958 /* */
2959 /* Name - mono_arch_output_basic_block */
2960 /* */
2961 /* Function - Perform the "real" work of emitting instructions */
2962 /* that will do the work of in the basic block. */
2963 /* */
2964 /*------------------------------------------------------------------*/
2965
2966 void
2967 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
2968 {
2969 MonoInst *ins;
2970 MonoCallInst *call;
2971 guint offset;
2972 guint8 *code = cfg->native_code + cfg->code_len;
2973 MonoInst *last_ins = NULL;
2974 guint last_offset = 0;
2975 int max_len, cpos;
2976 guint8 cond;
2977
2978 if (cfg->opt & MONO_OPT_PEEPHOLE)
2979 peephole_pass (cfg, bb);
2980
2981 /* we don't align basic blocks of loops on s390 */
2982
2983 if (cfg->verbose_level > 2)
2984 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
2985
2986 cpos = bb->max_offset;
2987
2988 if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
2989 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
2990 //g_assert (!mono_compile_aot);
2991 //cpos += 6;
2992 //if (bb->cil_code)
2993 // cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
2994 /* this is not thread save, but good enough */
2995 /* fixme: howto handle overflows? */
2996 //x86_inc_mem (code, &cov->data [bb->dfn].count);
2997 }
2998
2999 ins = bb->code;
3000 while (ins) {
3001 offset = code - cfg->native_code;
3002
3003 max_len = ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
3004
3005 if (offset > (cfg->code_size - max_len - 16)) {
3006 cfg->code_size *= 2;
3007 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
3008 code = cfg->native_code + offset;
3009 }
3010
3011 mono_debug_record_line_number (cfg, ins, offset);
3012
3013 switch (ins->opcode) {
3014 case OP_STOREI1_MEMBASE_IMM: {
3015 s390_lghi (code, s390_r14, ins->inst_imm);
3016 if (s390_is_uimm12(ins->inst_offset))
3017 s390_stc (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
3018 else {
3019 s390_basr (code, s390_r13, 0);
3020 s390_j (code, 6);
3021 s390_llong(code, ins->inst_offset);
3022 s390_lg (code, s390_r13, 0, s390_r13, 4);
3023 s390_stc (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
3024 }
3025 }
3026 break;
3027 case OP_STOREI2_MEMBASE_IMM: {
3028 s390_lghi (code, s390_r14, ins->inst_imm);
3029 if (s390_is_uimm12(ins->inst_offset)) {
3030 s390_sth (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
3031 } else {
3032 s390_basr (code, s390_r13, 0);
3033 s390_j (code, 6);
3034 s390_llong(code, ins->inst_offset);
3035 s390_lg (code, s390_r13, 0, s390_r13, 4);
3036 s390_sth (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
3037 }
3038 }
3039 break;
3040 case OP_STORE_MEMBASE_IMM:
3041 case OP_STOREI8_MEMBASE_IMM: {
3042 if (s390_is_imm16(ins->inst_imm)) {
3043 s390_lghi (code, s390_r14, ins->inst_imm);
3044 } else {
3045 s390_basr (code, s390_r13, 0);
3046 s390_j (code, 6);
3047 s390_llong(code, ins->inst_imm);
3048 s390_lg (code, s390_r14, 0, s390_r13, 4);
3049 }
3050 if (s390_is_uimm12(ins->inst_offset)) {
3051 s390_stg (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
3052 } else {
3053 s390_basr (code, s390_r13, 0);
3054 s390_j (code, 6);
3055 s390_llong(code, ins->inst_offset);
3056 s390_lg (code, s390_r13, 0, s390_r13, 4);
3057 s390_stg (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
3058 }
3059 }
3060 break;
3061 case OP_STOREI4_MEMBASE_IMM: {
3062 if (s390_is_imm16(ins->inst_imm)) {
3063 s390_lghi (code, s390_r14, ins->inst_imm);
3064 } else {
3065 s390_basr (code, s390_r13, 0);
3066 s390_j (code, 6);
3067 s390_llong(code, ins->inst_imm);
3068 s390_lg (code, s390_r14, 0, s390_r13, 4);
3069 }
3070 if (s390_is_uimm12(ins->inst_offset)) {
3071 s390_st (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
3072 } else {
3073 s390_basr (code, s390_r13, 0);
3074 s390_j (code, 6);
3075 s390_llong(code, ins->inst_offset);
3076 s390_lg (code, s390_r13, 0, s390_r13, 4);
3077 s390_st (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
3078 }
3079 }
3080 break;
3081 case OP_STOREI1_MEMBASE_REG: {
3082 if (s390_is_uimm12(ins->inst_offset)) {
3083 s390_stc (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3084 } else {
3085 s390_basr (code, s390_r13, 0);
3086 s390_j (code, 6);
3087 s390_llong(code, ins->inst_offset);
3088 s390_lg (code, s390_r13, 0, s390_r13, 4);
3089 s390_stc (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3090 }
3091 }
3092 break;
3093 case OP_STOREI2_MEMBASE_REG: {
3094 if (s390_is_uimm12(ins->inst_offset)) {
3095 s390_sth (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3096 } else {
3097 s390_basr (code, s390_r13, 0);
3098 s390_j (code, 6);
3099 s390_llong(code, ins->inst_offset);
3100 s390_lg (code, s390_r13, 0, s390_r13, 4);
3101 s390_sth (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3102 }
3103 }
3104 break;
3105 case OP_STORE_MEMBASE_REG:
3106 case OP_STOREI8_MEMBASE_REG: {
3107 if (s390_is_uimm12(ins->inst_offset)) {
3108 s390_stg (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3109 } else {
3110 s390_basr (code, s390_r13, 0);
3111 s390_j (code, 6);
3112 s390_llong(code, ins->inst_offset);
3113 s390_lg (code, s390_r13, 0, s390_r13, 4);
3114 s390_stg (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3115 }
3116 }
3117 break;
3118 case OP_STOREI4_MEMBASE_REG: {
3119 if (s390_is_uimm12(ins->inst_offset)) {
3120 s390_st (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3121 } else {
3122 s390_basr (code, s390_r13, 0);
3123 s390_j (code, 6);
3124 s390_llong(code, ins->inst_offset);
3125 s390_lg (code, s390_r13, 0, s390_r13, 4);
3126 s390_st (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3127 }
3128 }
3129 break;
3130 case CEE_LDIND_I:
3131 case CEE_LDIND_I4:
3132 case CEE_LDIND_U4: {
3133 s390_basr (code, s390_r13, 0);
3134 s390_j (code, 6);
3135 s390_word (code, ins->inst_p0);
3136 s390_lg (code, s390_r13, 0, s390_r13, 4);
3137 s390_lgf (code, ins->dreg, 0, s390_r13, 0);
3138 }
3139 break;
3140 case OP_LOADU4_MEM:
3141 g_assert_not_reached ();
3142 break;
3143 case OP_LOAD_MEMBASE:
3144 case OP_LOADI8_MEMBASE: {
3145 if (s390_is_uimm12(ins->inst_offset))
3146 s390_lg (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3147 else {
3148 if (s390_is_imm16(ins->inst_offset)) {
3149 s390_lghi(code, s390_r13, ins->inst_offset);
3150 s390_lg (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3151 } else {
3152 s390_basr (code, s390_r13, 0);
3153 s390_j (code, 6);
3154 s390_llong(code, ins->inst_offset);
3155 s390_lg (code, s390_r13, 0, s390_r13, 4);
3156 s390_lg (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3157 }
3158 }
3159 }
3160 break;
3161 case OP_LOADI4_MEMBASE:
3162 case OP_LOADU4_MEMBASE: {
3163 if (s390_is_uimm12(ins->inst_offset))
3164 s390_lgf (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3165 else {
3166 if (s390_is_imm16(ins->inst_offset)) {
3167 s390_lghi(code, s390_r13, ins->inst_offset);
3168 s390_lgf (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3169 } else {
3170 s390_basr (code, s390_r13, 0);
3171 s390_j (code, 6);
3172 s390_llong(code, ins->inst_offset);
3173 s390_lg (code, s390_r13, 0, s390_r13, 4);
3174 s390_lgf (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3175 }
3176 }
3177 }
3178 break;
3179 case OP_LOADU1_MEMBASE: {
3180 s390_lghi(code, s390_r0, 0);
3181 if (s390_is_uimm12(ins->inst_offset))
3182 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3183 else {
3184 s390_basr (code, s390_r13, 0);
3185 s390_j (code, 6);
3186 s390_llong(code, ins->inst_offset);
3187 s390_lg (code, s390_r13, 0, s390_r13, 4);
3188 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3189 }
3190 s390_lgr (code, ins->dreg, s390_r0);
3191 }
3192 break;
3193 case OP_LOADI1_MEMBASE: {
3194 s390_lghi(code, s390_r0, 0);
3195 if (s390_is_uimm12(ins->inst_offset))
3196 s390_lgb (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3197 else {
3198 s390_basr (code, s390_r13, 0);
3199 s390_j (code, 6);
3200 s390_llong(code, ins->inst_offset);
3201 s390_lg (code, s390_r13, 0, s390_r13, 4);
3202 s390_lgb (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3203 }
3204 }
3205 break;
3206 case OP_LOADU2_MEMBASE: {
3207 s390_lghi(code, s390_r0, 0);
3208 if (s390_is_uimm12(ins->inst_offset))
3209 s390_icm (code, s390_r0, 3, ins->inst_basereg, ins->inst_offset);
3210 else {
3211 s390_basr (code, s390_r13, 0);
3212 s390_j (code, 6);
3213 s390_llong(code, ins->inst_offset);
3214 s390_lg (code, s390_r13, 0, s390_r13, 4);
3215 s390_agr (code, s390_r13, ins->inst_basereg);
3216 s390_icm (code, s390_r0, 3, s390_r13, 0);
3217 }
3218 s390_lgr (code, ins->dreg, s390_r0);
3219 }
3220 break;
3221 case OP_LOADI2_MEMBASE: {
3222 s390_lghi(code, s390_r0, 0);
3223 if (s390_is_uimm12(ins->inst_offset))
3224 s390_lh (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3225 else {
3226 s390_basr (code, s390_r13, 0);
3227 s390_j (code, 6);
3228 s390_llong(code, ins->inst_offset);
3229 s390_lg (code, s390_r13, 0, s390_r13, 4);
3230 s390_lh (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3231 }
3232 s390_lgr (code, ins->dreg, s390_r0);
3233 }
3234 break;
3235 case CEE_CONV_I1: {
3236 s390_lghi (code, s390_r0, 0x80);
3237 if (ins->dreg != ins->sreg1) {
3238 s390_lgr (code, ins->dreg, ins->sreg1);
3239 }
3240 s390_ngr (code, s390_r0, ins->sreg1);
3241 s390_jz (code, 7);
3242 s390_lghi (code, s390_r13, -1);
3243 s390_sllg (code, s390_r13, s390_r13, 0, 8);
3244 s390_ogr (code, ins->dreg, s390_r13);
3245 }
3246 break;
3247 case CEE_CONV_I2: {
3248 s390_lghi (code, s390_r0, 0x80);
3249 s390_sllg (code, s390_r0, s390_r0, 0, 8);
3250 if (ins->dreg != ins->sreg1) {
3251 s390_lgr (code, ins->dreg, ins->sreg1);
3252 }
3253 s390_ngr (code, s390_r0, ins->sreg1);
3254 s390_jz (code, 7);
3255 s390_lghi (code, s390_r13, -1);
3256 s390_sllg (code, s390_r13, s390_r13, 0, 16);
3257 s390_ogr (code, ins->dreg, s390_r13);
3258 }
3259 break;
3260 case CEE_CONV_U1: {
3261 s390_lghi (code, s390_r0, 0xff);
3262 if (ins->dreg != ins->sreg1) {
3263 s390_lgr (code, ins->dreg, ins->sreg1);
3264 }
3265 s390_ngr (code, ins->dreg, s390_r0);
3266 }
3267 break;
3268 case CEE_CONV_U2: {
3269 s390_lghi (code, s390_r0, -1);
3270 s390_sllg (code, s390_r0, s390_r0, 0, 48);
3271 s390_srlg (code, s390_r0, s390_r0, 0, 48);
3272 if (ins->dreg != ins->sreg1) {
3273 s390_lgr (code, ins->dreg, ins->sreg1);
3274 }
3275 s390_ngr (code, ins->dreg, s390_r0);
3276 }
3277 break;
3278 case OP_COMPARE:
3279 case OP_LCOMPARE: {
3280 if ((ins->next) &&
3281 ((ins->next->opcode >= CEE_BNE_UN) &&
3282 (ins->next->opcode <= CEE_BLT_UN)) ||
3283 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3284 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3285 ((ins->next->opcode == OP_CLT_UN) ||
3286 (ins->next->opcode == OP_CGT_UN)))
3287 s390_clgr (code, ins->sreg1, ins->sreg2);
3288 else
3289 s390_cgr (code, ins->sreg1, ins->sreg2);
3290 }
3291 break;
3292 case OP_COMPARE_IMM: {
3293 if (s390_is_imm16 (ins->inst_imm)) {
3294 s390_lghi (code, s390_r0, ins->inst_imm);
3295 if ((ins->next) &&
3296 ((ins->next->opcode >= CEE_BNE_UN) &&
3297 (ins->next->opcode <= CEE_BLT_UN)) ||
3298 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3299 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3300 ((ins->next->opcode == OP_CLT_UN) ||
3301 (ins->next->opcode == OP_CGT_UN)))
3302 s390_clgr (code, ins->sreg1, s390_r0);
3303 else
3304 s390_cgr (code, ins->sreg1, s390_r0);
3305 }
3306 else {
3307 s390_basr (code, s390_r13, 0);
3308 s390_j (code, 6);
3309 s390_llong(code, ins->inst_imm);
3310 if ((ins->next) &&
3311 ((ins->next->opcode >= CEE_BNE_UN) &&
3312 (ins->next->opcode <= CEE_BLT_UN)) ||
3313 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3314 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3315 ((ins->next->opcode == OP_CLT_UN) &&
3316 (ins->next->opcode == OP_CGT_UN)))
3317 s390_clg (code, ins->sreg1, 0, s390_r13, 4);
3318 else
3319 s390_cg (code, ins->sreg1, 0, s390_r13, 4);
3320 }
3321 }
3322 break;
3323 case OP_ICOMPARE: {
3324 if ((ins->next) &&
3325 ((ins->next->opcode >= CEE_BNE_UN) &&
3326 (ins->next->opcode <= CEE_BLT_UN)) ||
3327 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3328 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3329 ((ins->next->opcode == OP_CLT_UN) ||
3330 (ins->next->opcode == OP_CGT_UN)))
3331 s390_clr (code, ins->sreg1, ins->sreg2);
3332 else
3333 s390_cr (code, ins->sreg1, ins->sreg2);
3334 }
3335 break;
3336 case OP_ICOMPARE_IMM: {
3337 if (s390_is_imm16 (ins->inst_imm)) {
3338 s390_lghi (code, s390_r0, ins->inst_imm);
3339 if ((ins->next) &&
3340 ((ins->next->opcode >= CEE_BNE_UN) &&
3341 (ins->next->opcode <= CEE_BLT_UN)) ||
3342 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3343 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3344 ((ins->next->opcode == OP_CLT_UN) ||
3345 (ins->next->opcode == OP_CGT_UN)))
3346 s390_clr (code, ins->sreg1, s390_r0);
3347 else
3348 s390_cr (code, ins->sreg1, s390_r0);
3349 }
3350 else {
3351 s390_basr (code, s390_r13, 0);
3352 s390_j (code, 4);
3353 s390_word (code, ins->inst_imm);
3354 if ((ins->next) &&
3355 ((ins->next->opcode >= CEE_BNE_UN) &&
3356 (ins->next->opcode <= CEE_BLT_UN)) ||
3357 ((ins->next->opcode >= OP_COND_EXC_NE_UN) &&
3358 (ins->next->opcode <= OP_COND_EXC_LT_UN)) ||
3359 ((ins->next->opcode == OP_CLT_UN) &&
3360 (ins->next->opcode == OP_CGT_UN)))
3361 s390_cl (code, ins->sreg1, 0, s390_r13, 4);
3362 else
3363 s390_c (code, ins->sreg1, 0, s390_r13, 4);
3364 }
3365 }
3366 break;
3367 case OP_X86_TEST_NULL: {
3368 s390_ltgr(code, ins->sreg1, ins->sreg1);
3369 }
3370 break;
3371 case CEE_BREAK: {
3372 s390_break (code);
3373 }
3374 break;
3375 case OP_ADDCC: {
3376 if (ins->dreg != ins->sreg1) {
3377 s390_lgr (code, ins->dreg, ins->sreg1);
3378 }
3379 s390_algr (code, ins->dreg, ins->sreg2);
3380 }
3381 break;
3382 case CEE_ADD: {
3383 if (ins->dreg != ins->sreg1) {
3384 s390_lgr (code, ins->dreg, ins->sreg1);
3385 }
3386 s390_agr (code, ins->dreg, ins->sreg2);
3387 }
3388 break;
3389 case OP_ADC: {
3390 if (ins->dreg != ins->sreg1) {
3391 s390_lgr (code, ins->dreg, ins->sreg1);
3392 }
3393 s390_alcgr (code, ins->dreg, ins->sreg2);
3394 }
3395 break;
3396 case OP_ADD_IMM: {
3397 if ((ins->next) &&
3398 (ins->next->opcode == OP_ADC_IMM)) {
3399 s390_basr (code, s390_r13, 0);
3400 s390_j (code, 6);
3401 s390_llong (code, ins->inst_imm);
3402 if (ins->dreg != ins->sreg1) {
3403 s390_lgr (code, ins->dreg, ins->sreg1);
3404 }
3405 s390_alg (code, ins->dreg, 0, s390_r13, 4);
3406 } else {
3407 if (s390_is_imm16 (ins->inst_imm)) {
3408 if (ins->dreg != ins->sreg1) {
3409 s390_lgr (code, ins->dreg, ins->sreg1);
3410 }
3411 s390_aghi (code, ins->dreg, ins->inst_imm);
3412 } else {
3413 s390_basr (code, s390_r13, 0);
3414 s390_j (code, 6);
3415 s390_llong (code, ins->inst_imm);
3416 if (ins->dreg != ins->sreg1) {
3417 s390_lgr (code, ins->dreg, ins->sreg1);
3418 }
3419 s390_ag (code, ins->dreg, 0, s390_r13, 4);
3420 }
3421 }
3422 }
3423 break;
3424 case OP_ADC_IMM: {
3425 if (s390_is_imm16 (ins->inst_imm)) {
3426 if (ins->dreg != ins->sreg1) {
3427 s390_lgr (code, ins->dreg, ins->sreg1);
3428 }
3429 s390_lghi (code, s390_r0, ins->inst_imm);
3430 s390_alcgr (code, ins->dreg, s390_r0);
3431 } else {
3432 s390_basr (code, s390_r13, 0);
3433 s390_j (code, 6);
3434 s390_llong(code, ins->inst_imm);
3435 s390_lg (code, s390_r13, 0, s390_r13, 4);
3436 s390_alcgr(code, ins->dreg, s390_r13);
3437 }
3438 }
3439 break;
3440 case CEE_ADD_OVF: {
3441 if (ins->dreg != ins->sreg1) {
3442 s390_lgr (code, ins->dreg, ins->sreg1);
3443 }
3444 s390_ar (code, ins->dreg, ins->sreg2);
3445 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3446 }
3447 break;
3448 case CEE_ADD_OVF_UN: {
3449 if (ins->dreg != ins->sreg1) {
3450 s390_lgr (code, ins->dreg, ins->sreg1);
3451 }
3452 s390_algr (code, ins->dreg, ins->sreg2);
3453 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3454 }
3455 break;
3456 case OP_ADD_OVF_CARRY: {
3457 if (ins->dreg != ins->sreg1) {
3458 s390_lgr (code, ins->dreg, ins->sreg1);
3459 }
3460 s390_lghi (code, s390_r0, 0);
3461 s390_lgr (code, s390_r1, s390_r0);
3462 s390_alcgr(code, s390_r0, s390_r1);
3463 s390_agr (code, ins->dreg, ins->sreg2);
3464 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3465 s390_agr (code, ins->dreg, s390_r0);
3466 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3467 }
3468 break;
3469 case OP_ADD_OVF_UN_CARRY: {
3470 if (ins->dreg != ins->sreg1) {
3471 s390_lgr (code, ins->dreg, ins->sreg1);
3472 }
3473 s390_alcgr (code, ins->dreg, ins->sreg2);
3474 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, "OverflowException");
3475 }
3476 break;
3477 case OP_SUBCC: {
3478 if (ins->dreg != ins->sreg1) {
3479 s390_lr (code, ins->dreg, ins->sreg1);
3480 }
3481 s390_slgr (code, ins->dreg, ins->sreg2);
3482 }
3483 break;
3484 case CEE_SUB: {
3485 if (ins->dreg != ins->sreg1) {
3486 s390_lgr (code, ins->dreg, ins->sreg1);
3487 }
3488 s390_sgr (code, ins->dreg, ins->sreg2);
3489 }
3490 break;
3491 case OP_SBB: {
3492 if (ins->dreg != ins->sreg1) {
3493 s390_lgr (code, ins->dreg, ins->sreg1);
3494 }
3495 s390_slbgr (code, ins->dreg, ins->sreg2);
3496 }
3497 break;
3498 case OP_SUB_IMM: {
3499 if (s390_is_imm16 (-ins->inst_imm)) {
3500 if (ins->dreg != ins->sreg1) {
3501 s390_lgr (code, ins->dreg, ins->sreg1);
3502 }
3503 s390_aghi (code, ins->dreg, -ins->inst_imm);
3504 } else {
3505 s390_basr (code, s390_r13, 0);
3506 s390_j (code, 6);
3507 s390_llong(code, ins->inst_imm);
3508 if (ins->dreg != ins->sreg1) {
3509 s390_lgr (code, ins->dreg, ins->sreg1);
3510 }
3511 s390_sg (code, ins->dreg, 0, s390_r13, 4);
3512 }
3513 }
3514 break;
3515 case OP_SBB_IMM: {
3516 s390_basr (code, s390_r13, 0);
3517 s390_j (code, 6);
3518 s390_llong(code, ins->inst_imm);
3519 s390_slg (code, ins->dreg, 0, s390_r13, 4);
3520 }
3521 break;
3522 case CEE_SUB_OVF: {
3523 if (ins->dreg != ins->sreg1) {
3524 s390_lgr (code, ins->dreg, ins->sreg1);
3525 }
3526 s390_sgr (code, ins->dreg, ins->sreg2);
3527 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3528 }
3529 break;
3530 case CEE_SUB_OVF_UN: {
3531 if (ins->dreg != ins->sreg1) {
3532 s390_lgr (code, ins->dreg, ins->sreg1);
3533 }
3534 s390_slr (code, ins->dreg, ins->sreg2);
3535 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3536 }
3537 break;
3538 case OP_SUB_OVF_CARRY: {
3539 if (ins->dreg != ins->sreg1) {
3540 s390_lgr (code, ins->dreg, ins->sreg1);
3541 }
3542 s390_lghi (code, s390_r0, 0);
3543 s390_lgr (code, s390_r1, s390_r0);
3544 s390_slbr (code, s390_r0, s390_r1);
3545 s390_sr (code, ins->dreg, ins->sreg2);
3546 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3547 s390_agr (code, ins->dreg, s390_r0);
3548 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, "OverflowException");
3549 }
3550 break;
3551 case OP_SUB_OVF_UN_CARRY: {
3552 if (ins->dreg != ins->sreg1) {
3553 s390_lgr (code, ins->dreg, ins->sreg1);
3554 }
3555 s390_slbgr (code, ins->dreg, ins->sreg2);
3556 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, "OverflowException");
3557 }
3558 break;
3559 case CEE_AND: {
3560 if (ins->sreg1 == ins->dreg) {
3561 s390_ngr (code, ins->dreg, ins->sreg2);
3562 }
3563 else {
3564 if (ins->sreg2 == ins->dreg) {
3565 s390_ngr (code, ins->dreg, ins->sreg1);
3566 }
3567 else {
3568 s390_lgr (code, ins->dreg, ins->sreg1);
3569 s390_ngr (code, ins->dreg, ins->sreg2);
3570 }
3571 }
3572 }
3573 break;
3574 case OP_AND_IMM: {
3575 if (s390_is_imm16 (ins->inst_imm)) {
3576 s390_lghi (code, s390_r0, ins->inst_imm);
3577 if (ins->dreg != ins->sreg1) {
3578 s390_lgr (code, ins->dreg, ins->sreg1);
3579 }
3580 s390_ngr (code, ins->dreg, s390_r0);
3581 } else {
3582 s390_basr (code, s390_r13, 0);
3583 s390_j (code, 6);
3584 s390_llong(code, ins->inst_imm);
3585 if (ins->dreg != ins->sreg1) {
3586 s390_lgr (code, ins->dreg, ins->sreg1);
3587 }
3588 s390_ng (code, ins->dreg, 0, s390_r13, 4);
3589 }
3590 }
3591 break;
3592 case CEE_DIV: {
3593 s390_lr (code, s390_r0, ins->sreg1);
3594 s390_srda (code, s390_r0, 0, 32);
3595 s390_dr (code, s390_r0, ins->sreg2);
3596 s390_lgfr (code, ins->dreg, s390_r1);
3597 }
3598 break;
3599 case CEE_DIV_UN: {
3600 s390_lr (code, s390_r0, ins->sreg1);
3601 s390_srdl (code, s390_r0, 0, 32);
3602 s390_dlr (code, s390_r0, ins->sreg2);
3603 s390_lgfr (code, ins->dreg, s390_r1);
3604 }
3605 break;
3606 case OP_DIV_IMM: {
3607 if (s390_is_imm16 (ins->inst_imm)) {
3608 s390_lghi (code, s390_r13, ins->inst_imm);
3609 s390_lgr (code, s390_r0, ins->sreg1);
3610 } else {
3611 s390_basr (code, s390_r13, 0);
3612 s390_j (code, 6);
3613 s390_llong(code, ins->inst_imm);
3614 s390_lgr (code, s390_r0, ins->sreg1);
3615 s390_lg (code, s390_r13, 0, s390_r13, 4);
3616 }
3617 s390_srda (code, s390_r0, 0, 32);
3618 s390_dr (code, s390_r0, ins->sreg2);
3619 s390_lgfr (code, ins->dreg, s390_r1);
3620 }
3621 break;
3622 case CEE_REM: {
3623 s390_lgr (code, s390_r0, ins->sreg1);
3624 s390_srda (code, s390_r0, 0, 32);
3625 s390_dr (code, s390_r0, ins->sreg2);
3626 s390_lgfr (code, ins->dreg, s390_r0);
3627 break;
3628 case CEE_REM_UN:
3629 s390_lgr (code, s390_r0, ins->sreg1);
3630 s390_srdl (code, s390_r0, 0, 32);
3631 s390_dlr (code, s390_r0, ins->sreg2);
3632 s390_lgfr (code, ins->dreg, s390_r0);
3633 }
3634 break;
3635 case OP_REM_IMM: {
3636 if (s390_is_imm16 (ins->inst_imm)) {
3637 s390_lghi (code, s390_r13, ins->inst_imm);
3638 s390_lgr (code, s390_r0, ins->sreg1);
3639 } else {
3640 s390_basr (code, s390_r13, 0);
3641 s390_j (code, 6);
3642 s390_llong(code, ins->inst_imm);
3643 s390_lgr (code, s390_r0, ins->sreg1);
3644 s390_lg (code, s390_r13, 0, s390_r13, 4);
3645 }
3646 s390_srda (code, s390_r0, 0, 32);
3647 s390_dr (code, s390_r0, ins->sreg2);
3648 s390_lgfr (code, ins->dreg, s390_r0);
3649 }
3650 break;
3651 case CEE_OR: {
3652 if (ins->sreg1 == ins->dreg) {
3653 s390_ogr (code, ins->dreg, ins->sreg2);
3654 }
3655 else {
3656 if (ins->sreg2 == ins->dreg) {
3657 s390_ogr (code, ins->dreg, ins->sreg1);
3658 }
3659 else {
3660 s390_lr (code, ins->dreg, ins->sreg1);
3661 s390_ogr (code, ins->dreg, ins->sreg2);
3662 }
3663 }
3664 }
3665 break;
3666 case OP_OR_IMM: {
3667 if (s390_is_imm16 (ins->inst_imm)) {
3668 s390_lghi (code, s390_r0, ins->inst_imm);
3669 if (ins->dreg != ins->sreg1) {
3670 s390_lgr (code, ins->dreg, ins->sreg1);
3671 }
3672 s390_ogr (code, ins->dreg, s390_r0);
3673 } else {
3674 s390_bras (code, s390_r13, 4);
3675 s390_llong(code, ins->inst_imm);
3676 if (ins->dreg != ins->sreg1) {
3677 s390_lgr (code, ins->dreg, ins->sreg1);
3678 }
3679 s390_og (code, ins->dreg, 0, s390_r13, 0);
3680 }
3681 }
3682 break;
3683 case CEE_XOR: {
3684 if (ins->sreg1 == ins->dreg) {
3685 s390_xgr (code, ins->dreg, ins->sreg2);
3686 }
3687 else {
3688 if (ins->sreg2 == ins->dreg) {
3689 s390_xgr (code, ins->dreg, ins->sreg1);
3690 }
3691 else {
3692 s390_lgr (code, ins->dreg, ins->sreg1);
3693 s390_xgr (code, ins->dreg, ins->sreg2);
3694 }
3695 }
3696 }
3697 break;
3698 case OP_XOR_IMM: {
3699 if (s390_is_imm16 (ins->inst_imm)) {
3700 s390_lghi (code, s390_r0, ins->inst_imm);
3701 if (ins->dreg != ins->sreg1) {
3702 s390_lgr (code, ins->dreg, ins->sreg1);
3703 }
3704 s390_xgr (code, ins->dreg, s390_r0);
3705 } else {
3706 s390_basr (code, s390_r13, 0);
3707 s390_j (code, 6);
3708 s390_llong(code, ins->inst_imm);
3709 if (ins->dreg != ins->sreg1) {
3710 s390_lgr (code, ins->dreg, ins->sreg1);
3711 }
3712 s390_xg (code, ins->dreg, 0, s390_r13, 4);
3713 }
3714 }
3715 break;
3716 case CEE_SHL:
3717 case OP_LSHL: {
3718 if (ins->sreg1 != ins->dreg) {
3719 s390_lgr (code, ins->dreg, ins->sreg1);
3720 }
3721 s390_sllg (code, ins->dreg, ins->dreg, ins->sreg2, 0);
3722 }
3723 break;
3724 case OP_SHL_IMM:
3725 case OP_LSHL_IMM: {
3726 if (ins->sreg1 != ins->dreg) {
3727 s390_lgr (code, ins->dreg, ins->sreg1);
3728 }
3729 s390_sllg (code, ins->dreg, ins->dreg, 0,
3730 (ins->inst_imm & 0x1f));
3731 }
3732 break;
3733 case CEE_SHR:
3734 case OP_LSHR: {
3735 if (ins->sreg1 != ins->dreg) {
3736 s390_lgr (code, ins->dreg, ins->sreg1);
3737 }
3738 s390_srag (code, ins->dreg, ins->dreg, ins->sreg2, 0);
3739 }
3740 break;
3741 case OP_SHR_IMM:
3742 case OP_LSHR_IMM: {
3743 if (ins->sreg1 != ins->dreg) {
3744 s390_lgr (code, ins->dreg, ins->sreg1);
3745 }
3746 s390_srag (code, ins->dreg, ins->dreg, 0,
3747 (ins->inst_imm & 0x1f));
3748 }
3749 break;
3750 case OP_SHR_UN_IMM:
3751 case OP_LSHR_UN_IMM: {
3752 if (ins->sreg1 != ins->dreg) {
3753 s390_lgr (code, ins->dreg, ins->sreg1);
3754 }
3755 s390_srlg (code, ins->dreg, ins->dreg, 0,
3756 (ins->inst_imm & 0x1f));
3757 }
3758 break;
3759 case CEE_SHR_UN:
3760 case OP_LSHR_UN: {
3761 if (ins->sreg1 != ins->dreg) {
3762 s390_lgr (code, ins->dreg, ins->sreg1);
3763 }
3764 s390_srlg (code, ins->dreg, ins->dreg, ins->sreg2, 0);
3765 }
3766 break;
3767 case CEE_NOT: {
3768 if (ins->sreg1 != ins->dreg) {
3769 s390_lgr (code, ins->dreg, ins->sreg1);
3770 }
3771 s390_lghi (code, s390_r0, -1);
3772 s390_xgr (code, ins->dreg, s390_r0);
3773 }
3774 break;
3775 case CEE_NEG: {
3776 s390_lcgr (code, ins->dreg, ins->sreg1);
3777 }
3778 break;
3779 case CEE_MUL: {
3780 if (ins->sreg1 == ins->dreg) {
3781 s390_msgr (code, ins->dreg, ins->sreg2);
3782 }
3783 else {
3784 if (ins->sreg2 == ins->dreg) {
3785 s390_msgr (code, ins->dreg, ins->sreg1);
3786 }
3787 else {
3788 s390_lgr (code, ins->dreg, ins->sreg1);
3789 s390_msgr (code, ins->dreg, ins->sreg2);
3790 }
3791 }
3792 }
3793 break;
3794 case OP_MUL_IMM: {
3795 if (s390_is_imm16 (ins->inst_imm)) {
3796 s390_lghi (code, s390_r13, ins->inst_imm);
3797 } else {
3798 s390_basr (code, s390_r13, 0);
3799 s390_j (code, 6);
3800 s390_llong(code, ins->inst_imm);
3801 if (ins->dreg != ins->sreg1) {
3802 s390_lgr (code, ins->dreg, ins->sreg1);
3803 }
3804 s390_lg (code, s390_r13, 0, s390_r13, 4);
3805 }
3806 s390_msgr (code, ins->dreg, s390_r13);
3807 }
3808 break;
3809 case CEE_MUL_OVF: {
3810 short int *o[2];
3811 s390_ltgr (code, s390_r1, ins->sreg1);
3812 s390_jz (code, 0); CODEPTR(code, o[0]);
3813 s390_ltgr (code, s390_r0, ins->sreg2);
3814 s390_jnz (code, 6);
3815 s390_lghi (code, s390_r1, 0);
3816 s390_j (code, 0); CODEPTR(code, o[1]);
3817 s390_xgr (code, s390_r0, s390_r1);
3818 s390_msgr (code, s390_r1, ins->sreg2);
3819 s390_xgr (code, s390_r0, s390_r1);
3820 s390_srlg (code, s390_r0, s390_r0, 0, 64);
3821 s390_ltgr (code, s390_r0, s390_r0);
3822 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3823 PTRSLOT (code, o[0]);
3824 PTRSLOT (code, o[1]);
3825 s390_lgr (code, ins->dreg, s390_r1);
3826 }
3827 break;
3828 case CEE_MUL_OVF_UN: {
3829 s390_lghi (code, s390_r0, 0);
3830 s390_lgr (code, s390_r1, ins->sreg1);
3831 s390_mlgr (code, s390_r0, ins->sreg2);
3832 s390_ltgr (code, s390_r0, s390_r0);
3833 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3834 s390_lgr (code, ins->dreg, s390_r1);
3835 }
3836 break;
3837 case OP_IADDCC: {
3838 if (ins->dreg != ins->sreg1) {
3839 s390_lr (code, ins->dreg, ins->sreg1);
3840 }
3841 s390_alr (code, ins->dreg, ins->sreg2);
3842 }
3843 break;
3844 case OP_IADD: {
3845 if (ins->dreg != ins->sreg1) {
3846 s390_lr (code, ins->dreg, ins->sreg1);
3847 }
3848 s390_ar (code, ins->dreg, ins->sreg2);
3849 }
3850 break;
3851 case OP_IADC: {
3852 if (ins->dreg != ins->sreg1) {
3853 s390_lr (code, ins->dreg, ins->sreg1);
3854 }
3855 s390_alcr (code, ins->dreg, ins->sreg2);
3856 }
3857 break;
3858 case OP_IADD_IMM: {
3859 if ((ins->next) &&
3860 (ins->next->opcode == OP_ADC_IMM)) {
3861 s390_basr (code, s390_r13, 0);
3862 s390_j (code, 4);
3863 s390_word (code, ins->inst_imm);
3864 if (ins->dreg != ins->sreg1) {
3865 s390_lr (code, ins->dreg, ins->sreg1);
3866 }
3867 s390_al (code, ins->dreg, 0, s390_r13, 4);
3868 } else {
3869 if (s390_is_imm16 (ins->inst_imm)) {
3870 if (ins->dreg != ins->sreg1) {
3871 s390_lr (code, ins->dreg, ins->sreg1);
3872 }
3873 s390_ahi (code, ins->dreg, ins->inst_imm);
3874 } else {
3875 s390_basr (code, s390_r13, 0);
3876 s390_j (code, 4);
3877 s390_word (code, ins->inst_imm);
3878 if (ins->dreg != ins->sreg1) {
3879 s390_lr (code, ins->dreg, ins->sreg1);
3880 }
3881 s390_a (code, ins->dreg, 0, s390_r13, 4);
3882 }
3883 }
3884 }
3885 break;
3886 case OP_IADC_IMM: {
3887 if (s390_is_imm16 (ins->inst_imm)) {
3888 if (ins->dreg != ins->sreg1) {
3889 s390_lr (code, ins->dreg, ins->sreg1);
3890 }
3891 s390_lhi (code, s390_r0, ins->inst_imm);
3892 s390_alcr (code, ins->dreg, s390_r0);
3893 } else {
3894 s390_basr (code, s390_r13, 0);
3895 s390_j (code, 4);
3896 s390_word (code, ins->inst_imm);
3897 s390_l (code, s390_r13, 0, s390_r13, 4);
3898 s390_alcr (code, ins->dreg, s390_r13);
3899 }
3900 }
3901 break;
3902 case OP_ISUBCC: {
3903 if (ins->dreg != ins->sreg1) {
3904 s390_lr (code, ins->dreg, ins->sreg1);
3905 }
3906 s390_slr (code, ins->dreg, ins->sreg2);
3907 }
3908 break;
3909 case OP_ISUB: {
3910 if (ins->dreg != ins->sreg1) {
3911 s390_lr (code, ins->dreg, ins->sreg1);
3912 }
3913 s390_sr (code, ins->dreg, ins->sreg2);
3914 }
3915 break;
3916 case OP_ISBB: {
3917 if (ins->dreg != ins->sreg1) {
3918 s390_lr (code, ins->dreg, ins->sreg1);
3919 }
3920 s390_slbr (code, ins->dreg, ins->sreg2);
3921 }
3922 break;
3923 case OP_ISUB_IMM: {
3924 if (s390_is_imm16 (-ins->inst_imm)) {
3925 if (ins->dreg != ins->sreg1) {
3926 s390_lr (code, ins->dreg, ins->sreg1);
3927 }
3928 s390_ahi (code, ins->dreg, -ins->inst_imm);
3929 } else {
3930 s390_basr (code, s390_r13, 0);
3931 s390_j (code, 4);
3932 s390_word (code, ins->inst_imm);
3933 if (ins->dreg != ins->sreg1) {
3934 s390_lr (code, ins->dreg, ins->sreg1);
3935 }
3936 s390_s (code, ins->dreg, 0, s390_r13, 4);
3937 }
3938 }
3939 break;
3940 case OP_ISBB_IMM: {
3941 s390_basr (code, s390_r13, 0);
3942 s390_j (code, 4);
3943 s390_word (code, ins->inst_imm);
3944 s390_sl (code, ins->dreg, 0, s390_r13, 4);
3945 }
3946 break;
3947 case OP_IAND: {
3948 if (ins->sreg1 == ins->dreg) {
3949 s390_nr (code, ins->dreg, ins->sreg2);
3950 }
3951 else {
3952 if (ins->sreg2 == ins->dreg) {
3953 s390_nr (code, ins->dreg, ins->sreg1);
3954 }
3955 else {
3956 s390_lr (code, ins->dreg, ins->sreg1);
3957 s390_nr (code, ins->dreg, ins->sreg2);
3958 }
3959 }
3960 }
3961 break;
3962 case OP_IAND_IMM: {
3963 if (s390_is_imm16 (ins->inst_imm)) {
3964 s390_lhi (code, s390_r0, ins->inst_imm);
3965 if (ins->dreg != ins->sreg1) {
3966 s390_lr (code, ins->dreg, ins->sreg1);
3967 }
3968 s390_nr (code, ins->dreg, s390_r0);
3969 } else {
3970 s390_basr (code, s390_r13, 0);
3971 s390_j (code, 4);
3972 s390_word (code, ins->inst_imm);
3973 if (ins->dreg != ins->sreg1) {
3974 s390_lr (code, ins->dreg, ins->sreg1);
3975 }
3976 s390_n (code, ins->dreg, 0, s390_r13, 4);
3977 }
3978 }
3979 break;
3980 case OP_IDIV: {
3981 s390_lr (code, s390_r0, ins->sreg1);
3982 s390_srda (code, s390_r0, 0, 32);
3983 s390_dr (code, s390_r0, ins->sreg2);
3984 s390_lr (code, ins->dreg, s390_r1);
3985 }
3986 break;
3987 case OP_IDIV_UN: {
3988 s390_lr (code, s390_r0, ins->sreg1);
3989 s390_srdl (code, s390_r0, 0, 32);
3990 s390_dlr (code, s390_r0, ins->sreg2);
3991 s390_lr (code, ins->dreg, s390_r1);
3992 }
3993 break;
3994 case OP_IDIV_IMM: {
3995 if (s390_is_imm16 (ins->inst_imm)) {
3996 s390_lhi (code, s390_r13, ins->inst_imm);
3997 s390_lr (code, s390_r0, ins->sreg1);
3998 } else {
3999 s390_basr (code, s390_r13, 0);
4000 s390_j (code, 4);
4001 s390_word (code, ins->inst_imm);
4002 s390_lr (code, s390_r0, ins->sreg1);
4003 s390_l (code, s390_r13, 0, s390_r13, 4);
4004 }
4005 s390_srda (code, s390_r0, 0, 32);
4006 s390_dr (code, s390_r0, ins->sreg2);
4007 s390_lr (code, ins->dreg, s390_r1);
4008 }
4009 break;
4010 case OP_IREM: {
4011 s390_lr (code, s390_r0, ins->sreg1);
4012 s390_srda (code, s390_r0, 0, 32);
4013 s390_dr (code, s390_r0, ins->sreg2);
4014 s390_lr (code, ins->dreg, s390_r0);
4015 break;
4016 case OP_IREM_UN:
4017 s390_lr (code, s390_r0, ins->sreg1);
4018 s390_srdl (code, s390_r0, 0, 32);
4019 s390_dlr (code, s390_r0, ins->sreg2);
4020 s390_lr (code, ins->dreg, s390_r0);
4021 }
4022 break;
4023 case OP_IREM_IMM: {
4024 if (s390_is_imm16 (ins->inst_imm)) {
4025 s390_lhi (code, s390_r13, ins->inst_imm);
4026 s390_lr (code, s390_r0, ins->sreg1);
4027 } else {
4028 s390_basr (code, s390_r13, 0);
4029 s390_j (code, 4);
4030 s390_word (code, ins->inst_imm);
4031 s390_lr (code, s390_r0, ins->sreg1);
4032 s390_l (code, s390_r13, 0, s390_r13, 4);
4033 }
4034 s390_srda (code, s390_r0, 0, 32);
4035 s390_dr (code, s390_r0, ins->sreg2);
4036 s390_lr (code, ins->dreg, s390_r0);
4037 }
4038 break;
4039 case OP_IOR: {
4040 if (ins->sreg1 == ins->dreg) {
4041 s390_or (code, ins->dreg, ins->sreg2);
4042 }
4043 else {
4044 if (ins->sreg2 == ins->dreg) {
4045 s390_or (code, ins->dreg, ins->sreg1);
4046 }
4047 else {
4048 s390_lr (code, ins->dreg, ins->sreg1);
4049 s390_or (code, ins->dreg, ins->sreg2);
4050 }
4051 }
4052 }
4053 break;
4054 case OP_IOR_IMM: {
4055 if (s390_is_imm16 (ins->inst_imm)) {
4056 s390_lhi (code, s390_r0, ins->inst_imm);
4057 if (ins->dreg != ins->sreg1) {
4058 s390_lr (code, ins->dreg, ins->sreg1);
4059 }
4060 s390_or (code, ins->dreg, s390_r0);
4061 } else {
4062 s390_bras (code, s390_r13, 4);
4063 s390_word (code, ins->inst_imm);
4064 if (ins->dreg != ins->sreg1) {
4065 s390_lr (code, ins->dreg, ins->sreg1);
4066 }
4067 s390_o (code, ins->dreg, 0, s390_r13, 0);
4068 }
4069 }
4070 break;
4071 case OP_IXOR: {
4072 if (ins->sreg1 == ins->dreg) {
4073 s390_xr (code, ins->dreg, ins->sreg2);
4074 }
4075 else {
4076 if (ins->sreg2 == ins->dreg) {
4077 s390_xr (code, ins->dreg, ins->sreg1);
4078 }
4079 else {
4080 s390_lr (code, ins->dreg, ins->sreg1);
4081 s390_xr (code, ins->dreg, ins->sreg2);
4082 }
4083 }
4084 }
4085 break;
4086 case OP_IXOR_IMM: {
4087 if (s390_is_imm16 (ins->inst_imm)) {
4088 s390_lhi (code, s390_r0, ins->inst_imm);
4089 if (ins->dreg != ins->sreg1) {
4090 s390_lr (code, ins->dreg, ins->sreg1);
4091 }
4092 s390_xr (code, ins->dreg, s390_r0);
4093 } else {
4094 s390_basr (code, s390_r13, 0);
4095 s390_j (code, 4);
4096 s390_word (code, ins->inst_imm);
4097 if (ins->dreg != ins->sreg1) {
4098 s390_lr (code, ins->dreg, ins->sreg1);
4099 }
4100 s390_x (code, ins->dreg, 0, s390_r13, 4);
4101 }
4102 }
4103 break;
4104 case OP_ISHL: {
4105 if (ins->sreg1 != ins->dreg) {
4106 s390_lr (code, ins->dreg, ins->sreg1);
4107 }
4108 s390_sll (code, ins->dreg, ins->sreg2, 0);
4109 }
4110 break;
4111 case OP_ISHL_IMM: {
4112 if (ins->sreg1 != ins->dreg) {
4113 s390_lr (code, ins->dreg, ins->sreg1);
4114 }
4115 s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
4116 }
4117 break;
4118 case OP_ISHR: {
4119 if (ins->sreg1 != ins->dreg) {
4120 s390_lr (code, ins->dreg, ins->sreg1);
4121 }
4122 s390_sra (code, ins->dreg, ins->sreg2, 0);
4123 }
4124 break;
4125 case OP_ISHR_IMM: {
4126 if (ins->sreg1 != ins->dreg) {
4127 s390_lr (code, ins->dreg, ins->sreg1);
4128 }
4129 s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
4130 }
4131 break;
4132 case OP_ISHR_UN_IMM: {
4133 if (ins->sreg1 != ins->dreg) {
4134 s390_lr (code, ins->dreg, ins->sreg1);
4135 }
4136 s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
4137 }
4138 break;
4139 case OP_ISHR_UN: {
4140 if (ins->sreg1 != ins->dreg) {
4141 s390_lr (code, ins->dreg, ins->sreg1);
4142 }
4143 s390_srl (code, ins->dreg, ins->sreg2, 0);
4144 }
4145 break;
4146 case OP_INOT: {
4147 if (ins->sreg1 != ins->dreg) {
4148 s390_lr (code, ins->dreg, ins->sreg1);
4149 }
4150 s390_lhi (code, s390_r0, -1);
4151 s390_xr (code, ins->dreg, s390_r0);
4152 }
4153 break;
4154 case OP_INEG: {
4155 s390_lcr (code, ins->dreg, ins->sreg1);
4156 }
4157 break;
4158 case OP_IMUL: {
4159 if (ins->sreg1 == ins->dreg) {
4160 s390_msr (code, ins->dreg, ins->sreg2);
4161 }
4162 else {
4163 if (ins->sreg2 == ins->dreg) {
4164 s390_msr (code, ins->dreg, ins->sreg1);
4165 }
4166 else {
4167 s390_lr (code, ins->dreg, ins->sreg1);
4168 s390_msr (code, ins->dreg, ins->sreg2);
4169 }
4170 }
4171 }
4172 break;
4173 case OP_IMUL_IMM: {
4174 if (s390_is_imm16 (ins->inst_imm)) {
4175 s390_lhi (code, s390_r13, ins->inst_imm);
4176 } else {
4177 s390_basr (code, s390_r13, 0);
4178 s390_j (code, 4);
4179 s390_word (code, ins->inst_imm);
4180 if (ins->dreg != ins->sreg1) {
4181 s390_lr (code, ins->dreg, ins->sreg1);
4182 }
4183 s390_l (code, s390_r13, 0, s390_r13, 4);
4184 }
4185 s390_msr (code, ins->dreg, s390_r13);
4186 }
4187 break;
4188 case OP_IMUL_OVF: {
4189 short int *o[2];
4190 s390_ltr (code, s390_r1, ins->sreg1);
4191 s390_jz (code, 0); CODEPTR(code, o[0]);
4192 s390_ltr (code, s390_r0, ins->sreg2);
4193 s390_jnz (code, 6);
4194 s390_lhi (code, s390_r1, 0);
4195 s390_j (code, 0); CODEPTR(code, o[1]);
4196 s390_xr (code, s390_r0, s390_r1);
4197 s390_msr (code, s390_r1, ins->sreg2);
4198 s390_xr (code, s390_r0, s390_r1);
4199 s390_srl (code, s390_r0, 0, 31);
4200 s390_ltr (code, s390_r0, s390_r0);
4201 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
4202 PTRSLOT (code, o[0]);
4203 PTRSLOT (code, o[1]);
4204 s390_lr (code, ins->dreg, s390_r1);
4205 }
4206 break;
4207 case OP_IMUL_OVF_UN: {
4208 s390_lhi (code, s390_r0, 0);
4209 s390_lr (code, s390_r1, ins->sreg1);
4210 s390_mlr (code, s390_r0, ins->sreg2);
4211 s390_ltr (code, s390_r0, s390_r0);
4212 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
4213 s390_lr (code, ins->dreg, s390_r1);
4214 }
4215 break;
4216 case OP_ICONST:
4217 case OP_I8CONST:
4218 case OP_SETREGIMM: {
4219 if (s390_is_imm16(ins->inst_c0)) {
4220 s390_lghi (code, ins->dreg, ins->inst_c0);
4221 } else {
4222 s390_basr (code, s390_r13, 0);
4223 s390_j (code, 6);
4224 s390_llong(code, ins->inst_c0);
4225 s390_lg (code, ins->dreg, 0, s390_r13, 4);
4226 }
4227 }
4228 break;
4229 case OP_AOTCONST: {
4230 s390_basr (code, s390_r13, 0);
4231 s390_j (code, 6);
4232 mono_add_patch_info (cfg, code - cfg->native_code,
4233 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
4234 s390_llong(code, 0);
4235 s390_lg (code,ins->dreg, 0, s390_r13, 4);
4236 }
4237 break;
4238 case CEE_CONV_I:
4239 case CEE_CONV_I4:
4240 case CEE_CONV_I8:
4241 case CEE_CONV_U4:
4242 case OP_MOVE:
4243 case OP_SETREG: {
4244 if (ins->dreg != ins->sreg1) {
4245 s390_lgr(code, ins->dreg, ins->sreg1);
4246 }
4247 }
4248 break;
4249 case OP_SETFREG:
4250 case OP_FMOVE: {
4251 if (ins->dreg != ins->sreg1) {
4252 s390_ldr (code, ins->dreg, ins->sreg1);
4253 }
4254 }
4255 break;
4256 case OP_S390_SETF4RET: {
4257 s390_ledbr (code, ins->dreg, ins->sreg1);
4258 }
4259 break;
4260 case OP_FCONV_TO_R4: {
4261 if ((ins->next) &&
4262 (ins->next->opcode != OP_STORER4_MEMBASE_REG))
4263 s390_ledbr (code, ins->dreg, ins->sreg1);
4264 }
4265 break;
4266 case CEE_JMP: {
4267 int fParm;
4268 if (cfg->method->save_lmf)
4269 code = restoreLMF(cfg, code);
4270
4271 if (cfg->flags & MONO_CFG_HAS_TAIL) {
4272 s390_lmg(code, s390_r2, s390_r5, STK_BASE,
4273 S390_PARM_SAVE_OFFSET);
4274 for (fParm = 0; fParm < 4; fParm ++)
4275 s390_ld (code, fParm, 0, STK_BASE,
4276 S390_FLOAT_SAVE_OFFSET+fParm*sizeof(double));
4277 }
4278
4279 code = backUpStackPtr(cfg, code);
4280 s390_lg (code, s390_r14, 0, STK_BASE, S390_RET_ADDR_OFFSET);
4281 s390_basr (code, s390_r10, 0);
4282 s390_j (code, 6);
4283 mono_add_patch_info (cfg, code - cfg->native_code,
4284 MONO_PATCH_INFO_METHOD_JUMP,
4285 ins->inst_p0);
4286 s390_llong(code, 0);
4287 s390_lg (code, s390_r1, 0, s390_r10, 4);
4288 s390_basr (code, s390_r0, s390_r1);
4289 }
4290 break;
4291 case OP_CHECK_THIS: {
4292 /* ensure ins->sreg1 is not NULL */
4293 s390_lg (code, s390_r0, 0, ins->sreg1, 0);
4294 s390_ltgr (code, s390_r0, s390_r0);
4295 }
4296 break;
4297 case OP_FCALL: {
4298 s390_basr (code, s390_r10, 0);
4299 s390_j (code, 6);
4300 call = (MonoCallInst*)ins;
4301 if (ins->flags & MONO_INST_HAS_METHOD)
4302 mono_add_patch_info (cfg, code-cfg->native_code,
4303 MONO_PATCH_INFO_METHOD,
4304 call->method);
4305 else
4306 mono_add_patch_info (cfg, code-cfg->native_code,
4307 MONO_PATCH_INFO_ABS,
4308 call->fptr);
4309 s390_llong(code, 0);
4310 s390_lg (code, s390_r1, 0, s390_r10, 4);
4311 s390_basr (code, s390_r14, s390_r1);
4312 if (call->signature->ret->type == MONO_TYPE_R4)
4313 s390_ldebr (code, s390_f0, s390_f0);
4314 }
4315 break;
4316 case OP_LCALL:
4317 case OP_VCALL:
4318 case OP_VOIDCALL:
4319 case CEE_CALL: {
4320 s390_basr (code, s390_r10, 0);
4321 s390_j (code, 6);
4322 call = (MonoCallInst*)ins;
4323 if (ins->flags & MONO_INST_HAS_METHOD)
4324 mono_add_patch_info (cfg, code-cfg->native_code,
4325 MONO_PATCH_INFO_METHOD,
4326 call->method);
4327 else
4328 mono_add_patch_info (cfg, code-cfg->native_code,
4329 MONO_PATCH_INFO_ABS,
4330 call->fptr);
4331 s390_llong(code, 0);
4332 s390_lg (code, s390_r1, 0, s390_r10, 4);
4333 s390_basr (code, s390_r14, s390_r1);
4334 }
4335 break;
4336 case OP_FCALL_REG: {
4337 call = (MonoCallInst*)ins;
4338 s390_lgr (code, s390_r1, ins->sreg1);
4339 s390_basr (code, s390_r14, s390_r1);
4340 if (call->signature->ret->type == MONO_TYPE_R4)
4341 s390_ldebr (code, s390_f0, s390_f0);
4342 }
4343 break;
4344 case OP_LCALL_REG:
4345 case OP_VCALL_REG:
4346 case OP_VOIDCALL_REG:
4347 case OP_CALL_REG: {
4348 s390_lgr (code, s390_r1, ins->sreg1);
4349 s390_basr (code, s390_r14, s390_r1);
4350 }
4351 break;
4352 case OP_FCALL_MEMBASE: {
4353 call = (MonoCallInst*)ins;
4354 s390_lg (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
4355 s390_basr (code, s390_r14, s390_r1);
4356 if (call->signature->ret->type == MONO_TYPE_R4)
4357 s390_ldebr (code, s390_f0, s390_f0);
4358 }
4359 break;
4360 case OP_LCALL_MEMBASE:
4361 case OP_VCALL_MEMBASE:
4362 case OP_VOIDCALL_MEMBASE:
4363 case OP_CALL_MEMBASE: {
4364 s390_lg (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
4365 s390_basr (code, s390_r14, s390_r1);
4366 }
4367 break;
4368 case OP_OUTARG:
4369 g_assert_not_reached ();
4370 break;
4371 case OP_LOCALLOC: {
4372 int alloca_skip = S390_MINIMAL_STACK_SIZE + cfg->param_area +
4373 S390_STACK_ALIGNMENT - 1;
4374 int area_offset = S390_ALIGN(alloca_skip, S390_STACK_ALIGNMENT);
4375 s390_lgr (code, s390_r1, ins->sreg1);
4376 s390_aghi (code, s390_r1, 14);
4377 s390_srlg (code, s390_r1, s390_r1, 0, 3);
4378 s390_sllg (code, s390_r1, s390_r1, 0, 3);
4379 s390_lg (code, s390_r13, 0, STK_BASE, 0);
4380 s390_lcgr (code, s390_r1, s390_r1);
4381 s390_la (code, STK_BASE, STK_BASE, s390_r1, 0);
4382 s390_stg (code, s390_r13, 0, STK_BASE, 0);
4383 s390_la (code, ins->dreg, 0, STK_BASE, area_offset);
4384 s390_srlg (code, ins->dreg, ins->dreg, 0, 3);
4385 s390_sllg (code, ins->dreg, ins->dreg, 0, 3);
4386 }
4387 break;
4388 case CEE_RET: {
4389 s390_br (code, s390_r14);
4390 }
4391 break;
4392 case CEE_THROW: {
4393 s390_lgr (code, s390_r2, ins->sreg1);
4394 s390_basr (code, s390_r13, 0);
4395 s390_j (code, 6);
4396 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
4397 (gpointer)"mono_arch_throw_exception");
4398 s390_llong(code, 0);
4399 s390_lg (code, s390_r1, 0, s390_r13, 4);
4400 s390_basr (code, s390_r14, s390_r1);
4401 }
4402 break;
4403 case OP_START_HANDLER: {
4404 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4405 s390_stg (code, s390_r14, 0,
4406 ins->inst_left->inst_basereg,
4407 ins->inst_left->inst_offset);
4408 } else {
4409 s390_basr (code, s390_r13, 0);
4410 s390_j (code, 6);
4411 s390_llong(code, ins->inst_left->inst_offset);
4412 s390_lg (code, s390_r13, 0, s390_r13, 4);
4413 s390_stg (code, s390_r14, s390_r13,
4414 ins->inst_left->inst_basereg, 0);
4415 }
4416 }
4417 break;
4418 case OP_ENDFILTER: {
4419 if (ins->sreg1 != s390_r2)
4420 s390_lgr(code, s390_r2, ins->sreg1);
4421 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4422 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg,
4423 ins->inst_left->inst_offset);
4424 } else {
4425 s390_basr (code, s390_r13, 0);
4426 s390_j (code, 6);
4427 s390_llong(code, ins->inst_left->inst_offset);
4428 s390_lg (code, s390_r13, 0, s390_r13, 4);
4429 s390_lg (code, s390_r14, s390_r13,
4430 ins->inst_left->inst_basereg, 0);
4431 }
4432 s390_br (code, s390_r14);
4433 }
4434 break;
4435 case CEE_ENDFINALLY: {
4436 if (s390_is_uimm12 (ins->inst_left->inst_offset)) {
4437 s390_lg (code, s390_r14, 0, ins->inst_left->inst_basereg,
4438 ins->inst_left->inst_offset);
4439 } else {
4440 s390_basr (code, s390_r13, 0);
4441 s390_j (code, 6);
4442 s390_llong(code, ins->inst_left->inst_offset);
4443 s390_lg (code, s390_r13, 0, s390_r13, 4);
4444 s390_lg (code, s390_r14, s390_r13,
4445 ins->inst_left->inst_basereg, 0);
4446 }
4447 s390_br (code, s390_r14);
4448 }
4449 break;
4450 case OP_CALL_HANDLER: {
4451 mono_add_patch_info (cfg, code-cfg->native_code,
4452 MONO_PATCH_INFO_BB, ins->inst_target_bb);
4453 s390_brasl (code, s390_r14, 0);
4454 }
4455 break;
4456 case OP_LABEL: {
4457 ins->inst_c0 = code - cfg->native_code;
4458 }
4459 break;
4460 case CEE_BR:
4461 EMIT_UNCOND_BRANCH(ins);
4462 break;
4463 case OP_BR_REG: {
4464 s390_br (code, ins->sreg1);
4465 }
4466 break;
4467 case OP_CEQ:
4468 case OP_ICEQ: {
4469 s390_lghi(code, ins->dreg, 1);
4470 s390_jz (code, 4);
4471 s390_lghi(code, ins->dreg, 0);
4472 }
4473 break;
4474 case OP_CLT:
4475 case OP_ICLT: {
4476 s390_lghi(code, ins->dreg, 1);
4477 s390_jl (code, 4);
4478 s390_lghi(code, ins->dreg, 0);
4479 }
4480 break;
4481 case OP_CLT_UN:
4482 case OP_ICLT_UN: {
4483 s390_lghi(code, ins->dreg, 1);
4484 s390_jlo (code, 4);
4485 s390_lghi(code, ins->dreg, 0);
4486 }
4487 break;
4488 case OP_CGT:
4489 case OP_ICGT: {
4490 s390_lghi(code, ins->dreg, 1);
4491 s390_jh (code, 4);
4492 s390_lghi(code, ins->dreg, 0);
4493 }
4494 break;
4495 case OP_CGT_UN:
4496 case OP_ICGT_UN: {
4497 s390_lghi(code, ins->dreg, 1);
4498 s390_jho (code, 4);
4499 s390_lghi(code, ins->dreg, 0);
4500 }
4501 break;
4502 case OP_COND_EXC_EQ:
4503 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
4504 break;
4505 case OP_COND_EXC_NE_UN:
4506 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
4507 break;
4508 case OP_COND_EXC_LT:
4509 case OP_COND_EXC_LT_UN:
4510 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
4511 break;
4512 case OP_COND_EXC_GT:
4513 case OP_COND_EXC_GT_UN:
4514 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
4515 break;
4516 case OP_COND_EXC_GE:
4517 case OP_COND_EXC_GE_UN:
4518 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
4519 break;
4520 case OP_COND_EXC_LE:
4521 case OP_COND_EXC_LE_UN:
4522 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
4523 break;
4524 case OP_COND_EXC_OV:
4525 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
4526 break;
4527 case OP_COND_EXC_NO:
4528 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
4529 break;
4530 case OP_COND_EXC_C:
4531 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
4532 break;
4533 case OP_COND_EXC_NC:
4534 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
4535 break;
4536 case CEE_BEQ:
4537 case OP_IBEQ:
4538 EMIT_COND_BRANCH (ins, S390_CC_EQ);
4539 break;
4540 case CEE_BNE_UN:
4541 case OP_IBNE_UN:
4542 EMIT_COND_BRANCH (ins, S390_CC_NE);
4543 break;
4544 case CEE_BLT:
4545 case CEE_BLT_UN:
4546 case OP_IBLT:
4547 case OP_IBLT_UN:
4548 EMIT_COND_BRANCH (ins, S390_CC_LT);
4549 break;
4550 case CEE_BGT:
4551 case CEE_BGT_UN:
4552 case OP_IBGT:
4553 case OP_IBGT_UN:
4554 EMIT_COND_BRANCH (ins, S390_CC_GT);
4555 break;
4556 case CEE_BGE:
4557 case CEE_BGE_UN:
4558 case OP_IBGE:
4559 case OP_IBGE_UN:
4560 EMIT_COND_BRANCH (ins, S390_CC_GE);
4561 break;
4562 case CEE_BLE:
4563 case CEE_BLE_UN:
4564 case OP_IBLE:
4565 case OP_IBLE_UN:
4566 EMIT_COND_BRANCH (ins, S390_CC_LE);
4567 break;
4568
4569 /* floating point opcodes */
4570 case OP_R8CONST: {
4571 if (*((float *) ins->inst_p0) == 0) {
4572 s390_lzdr (code, ins->dreg);
4573 } else {
4574 s390_basr (code, s390_r13, 0);
4575 s390_j (code, 6);
4576 s390_llong (code, ins->inst_p0);
4577 s390_lg (code, s390_r13, 0, s390_r13, 4);
4578 s390_ld (code, ins->dreg, 0, s390_r13, 0);
4579 }
4580 }
4581 break;
4582 case OP_R4CONST: {
4583 if (*((float *) ins->inst_p0) == 0) {
4584 s390_lzdr (code, ins->dreg);
4585 } else {
4586 s390_basr (code, s390_r13, 0);
4587 s390_j (code, 6);
4588 s390_llong(code, ins->inst_p0);
4589 s390_lg (code, s390_r13, 0, s390_r13, 4);
4590 s390_ldeb (code, ins->dreg, 0, s390_r13, 0);
4591 }
4592 }
4593 break;
4594 case OP_STORER8_MEMBASE_REG: {
4595 if (s390_is_uimm12(ins->inst_offset)) {
4596 s390_std (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
4597 } else {
4598 s390_basr (code, s390_r13, 0);
4599 s390_j (code, 6);
4600 s390_llong(code, ins->inst_offset);
4601 s390_lg (code, s390_r13, 0, s390_r13, 4);
4602 s390_std (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
4603 }
4604 }
4605 break;
4606 case OP_LOADR8_MEMBASE: {
4607 if (s390_is_uimm12(ins->inst_offset)) {
4608 s390_ld (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
4609 } else {
4610 s390_basr (code, s390_r13, 0);
4611 s390_j (code, 6);
4612 s390_llong(code, ins->inst_offset);
4613 s390_lg (code, s390_r13, 0, s390_r13, 4);
4614 s390_ld (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
4615 }
4616 }
4617 break;
4618 case OP_STORER4_MEMBASE_REG: {
4619 if (s390_is_uimm12(ins->inst_offset)) {
4620 s390_ledbr(code, s390_f15, ins->sreg1);
4621 s390_ste (code, s390_f15, 0, ins->inst_destbasereg, ins->inst_offset);
4622 } else {
4623 s390_basr (code, s390_r13, 0);
4624 s390_j (code, 6);
4625 s390_llong(code, ins->inst_offset);
4626 s390_lg (code, s390_r13, 0, s390_r13, 4);
4627 s390_ledbr(code, s390_f15, ins->sreg1);
4628 s390_ste (code, s390_f15, s390_r13, ins->inst_destbasereg, 0);
4629 }
4630 }
4631 break;
4632 case OP_LOADR4_MEMBASE: {
4633 if (s390_is_uimm12(ins->inst_offset)) {
4634 s390_ldeb (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
4635 } else {
4636 s390_basr (code, s390_r13, 0);
4637 s390_j (code, 6);
4638 s390_llong(code, ins->inst_offset);
4639 s390_lg (code, s390_r13, 0, s390_r13, 4);
4640 s390_ldeb (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
4641 }
4642 }
4643 break;
4644 case CEE_CONV_R_UN: {
4645 s390_cdfbr (code, ins->dreg, ins->sreg1);
4646 s390_ltgr (code, ins->sreg1, ins->sreg1);
4647 s390_jnl (code, 12);
4648 s390_basr (code, s390_r13, 0);
4649 s390_j (code, 6);
4650 s390_word (code, 0x41f00000);
4651 s390_word (code, 0);
4652 s390_adb (code, ins->dreg, 0, s390_r13, 4);
4653 }
4654 break;
4655 case CEE_CONV_R4: {
4656 s390_cdfbr (code, ins->dreg, ins->sreg1);
4657 }
4658 break;
4659 case CEE_CONV_R8: {
4660 s390_cdfbr (code, ins->dreg, ins->sreg1);
4661 }
4662 break;
4663 case OP_FCONV_TO_I1:
4664 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
4665 break;
4666 case OP_FCONV_TO_U1:
4667 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
4668 break;
4669 case OP_FCONV_TO_I2:
4670 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
4671 break;
4672 case OP_FCONV_TO_U2:
4673 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
4674 break;
4675 case OP_FCONV_TO_I4:
4676 case OP_FCONV_TO_I:
4677 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
4678 break;
4679 case OP_FCONV_TO_U4:
4680 case OP_FCONV_TO_U:
4681 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
4682 break;
4683 case OP_FCONV_TO_I8:
4684 case OP_FCONV_TO_U8:
4685 g_assert_not_reached ();
4686 /* Implemented as helper calls */
4687 break;
4688 case OP_LCONV_TO_R_UN:
4689 g_assert_not_reached ();
4690 /* Implemented as helper calls */
4691 break;
4692 case OP_LCONV_TO_OVF_I: {
4693 /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
4694 short int *o[5];
4695 s390_ltgr (code, ins->sreg2, ins->sreg2);
4696 s390_jnl (code, 0); CODEPTR(code, o[0]);
4697 s390_ltgr (code, ins->sreg1, ins->sreg1);
4698 s390_jnl (code, 0); CODEPTR(code, o[1]);
4699 s390_lhi (code, s390_r13, -1);
4700 s390_cgr (code, ins->sreg1, s390_r13);
4701 s390_jnz (code, 0); CODEPTR(code, o[2]);
4702 if (ins->dreg != ins->sreg2)
4703 s390_lgr (code, ins->dreg, ins->sreg2);
4704 s390_j (code, 0); CODEPTR(code, o[3]);
4705 PTRSLOT(code, o[0]);
4706 s390_jz (code, 0); CODEPTR(code, o[4]);
4707 PTRSLOT(code, o[1]);
4708 PTRSLOT(code, o[2]);
4709 mono_add_patch_info (cfg, code - cfg->native_code,
4710 MONO_PATCH_INFO_EXC, "OverflowException");
4711 s390_brasl (code, s390_r14, 0);
4712 PTRSLOT(code, o[3]);
4713 PTRSLOT(code, o[4]);
4714 }
4715 break;
4716 case OP_SQRT: {
4717 s390_sqdbr (code, ins->dreg, ins->sreg1);
4718 }
4719 break;
4720 case OP_FADD: {
4721 if (ins->dreg == ins->sreg1)
4722 s390_adbr (code, ins->dreg, ins->sreg2);
4723 else {
4724 if (ins->dreg == ins->sreg2)
4725 s390_adbr (code, ins->dreg, ins->sreg1);
4726 else {
4727 s390_ldr (code, ins->dreg, ins->sreg1);
4728 s390_adbr (code, ins->dreg, ins->sreg2);
4729 }
4730 }
4731 }
4732 break;
4733 case OP_FSUB: {
4734 if (ins->dreg == ins->sreg1)
4735 s390_sdbr (code, ins->dreg, ins->sreg2);
4736 else {
4737 s390_ldr (code, ins->dreg, ins->sreg1);
4738 s390_sdbr (code, ins->dreg, ins->sreg2);
4739 }
4740 }
4741 break;
4742 case OP_FMUL: {
4743 if (ins->dreg == ins->sreg1)
4744 s390_mdbr (code, ins->dreg, ins->sreg2);
4745 else {
4746 if (ins->dreg == ins->sreg2)
4747 s390_mdbr (code, ins->dreg, ins->sreg1);
4748 else {
4749 s390_ldr (code, ins->dreg, ins->sreg1);
4750 s390_mdbr (code, ins->dreg, ins->sreg2);
4751 }
4752 }
4753 }
4754 break;
4755 case OP_FDIV: {
4756 if (ins->dreg == ins->sreg1)
4757 s390_ddbr (code, ins->dreg, ins->sreg2);
4758 else {
4759 s390_ldr (code, ins->dreg, ins->sreg1);
4760 s390_ddbr (code, ins->dreg, ins->sreg2);
4761 }
4762 }
4763 break;
4764 case OP_FNEG: {
4765 s390_lcdbr (code, ins->dreg, ins->sreg1);
4766 }
4767 break;
4768 case OP_FREM: {
4769 if (ins->dreg != ins->sreg1) {
4770 s390_ldr (code, ins->dreg, ins->sreg1);
4771 }
4772 s390_didbr (code, ins->dreg, ins->sreg2, 5, s390_f15);
4773 }
4774 break;
4775 case OP_FCOMPARE: {
4776 s390_cdbr (code, ins->sreg1, ins->sreg2);
4777 }
4778 break;
4779 case OP_FCEQ: {
4780 s390_cdbr (code, ins->sreg1, ins->sreg2);
4781 s390_lghi (code, ins->dreg, 1);
4782 s390_je (code, 6);
4783 s390_lghi (code, ins->dreg, 0);
4784 }
4785 break;
4786 case OP_FCLT: {
4787 s390_cdbr (code, ins->sreg1, ins->sreg2);
4788 s390_lghi (code, ins->dreg, 1);
4789 s390_jl (code, 4);
4790 s390_lghi (code, ins->dreg, 0);
4791 }
4792 break;
4793 case OP_FCLT_UN: {
4794 s390_cdbr (code, ins->sreg1, ins->sreg2);
4795 s390_lghi (code, ins->dreg, 1);
4796 s390_jlo (code, 4);
4797 s390_lghi (code, ins->dreg, 0);
4798 }
4799 break;
4800 case OP_FCGT: {
4801 s390_cdbr (code, ins->sreg1, ins->sreg2);
4802 s390_lghi (code, ins->dreg, 1);
4803 s390_jh (code, 4);
4804 s390_lghi (code, ins->dreg, 0);
4805 }
4806 break;
4807 case OP_FCGT_UN: {
4808 s390_cdbr (code, ins->sreg1, ins->sreg2);
4809 s390_lghi (code, ins->dreg, 1);
4810 s390_jho (code, 4);
4811 s390_lghi (code, ins->dreg, 0);
4812 }
4813 break;
4814 case OP_FBEQ:
4815 EMIT_COND_BRANCH (ins, S390_CC_EQ|S390_CC_OV);
4816 break;
4817 case OP_FBNE_UN:
4818 EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
4819 break;
4820 case OP_FBLT:
4821 EMIT_COND_BRANCH (ins, S390_CC_LT);
4822 break;
4823 case OP_FBLT_UN:
4824 EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
4825 break;
4826 case OP_FBGT:
4827 EMIT_COND_BRANCH (ins, S390_CC_GT);
4828 break;
4829 case OP_FBGT_UN:
4830 EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
4831 break;
4832 case OP_FBGE:
4833 EMIT_COND_BRANCH (ins, S390_CC_GE);
4834 break;
4835 case OP_FBGE_UN:
4836 EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
4837 break;
4838 case OP_FBLE:
4839 EMIT_COND_BRANCH (ins, S390_CC_LE);
4840 break;
4841 case OP_FBLE_UN:
4842 EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
4843 break;
4844 case CEE_CKFINITE: {
4845 short *o;
4846 s390_lhi (code, s390_r13, 0x7f);
4847 s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
4848 s390_jz (code, 0); CODEPTR(code, o);
4849 mono_add_patch_info (cfg, code - cfg->native_code,
4850 MONO_PATCH_INFO_EXC, "ArithmeticException");
4851 s390_brasl (code, s390_r14,0);
4852 PTRSLOT(code, o);
4853 }
4854 break;
4855 case OP_S390_MOVE: {
4856 if (ins->unused > 0) {
4857 if (ins->unused <= 256) {
4858 s390_mvc (code, ins->unused, ins->dreg,
4859 ins->inst_offset, ins->sreg1, ins->inst_imm);
4860 } else {
4861 s390_lr (code, s390_r0, ins->dreg);
4862 if (s390_is_imm16 (ins->inst_offset)) {
4863 s390_aghi (code, s390_r0, ins->inst_offset);
4864 } else {
4865 s390_basr (code, s390_r13, 0);
4866 s390_j (code, 6);
4867 s390_llong(code, ins->inst_offset);
4868 s390_a (code, s390_r0, 0, s390_r13, 4);
4869 }
4870 s390_lr (code, s390_r12, ins->sreg1);
4871 if (s390_is_imm16 (ins->inst_imm)) {
4872 s390_aghi (code, s390_r12, ins->inst_imm);
4873 } else {
4874 s390_basr (code, s390_r13, 0);
4875 s390_j (code, 6);
4876 s390_llong(code, ins->inst_imm);
4877 s390_ag (code, s390_r12, 0, s390_r13, 4);
4878 }
4879 s390_lgr (code, s390_r1, ins->sreg1);
4880 s390_lgr (code, s390_r13, s390_r1);
4881 s390_mvcle(code, s390_r0, s390_r12, 0, 0);
4882 s390_jo (code, -2);
4883 }
4884 }
4885 }
4886 break;
4887 default:
4888 g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
4889 g_assert_not_reached ();
4890 }
4891
4892 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
4893 g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %d)",
4894 mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
4895 // g_assert_not_reached ();
4896 }
4897
4898 cpos += max_len;
4899
4900 last_ins = ins;
4901 last_offset = offset;
4902
4903 ins = ins->next;
4904 }
4905
4906 cfg->code_len = code - cfg->native_code;
4907 }
4908
4909 /*========================= End of Function ========================*/
4910
4911 /*------------------------------------------------------------------*/
4912 /* */
4913 /* Name - mono_arch_register_lowlevel_calls */
4914 /* */
4915 /* Function - Register routines to help with --trace operation. */
4916 /* */
4917 /*------------------------------------------------------------------*/
4918
4919 void
4920 mono_arch_register_lowlevel_calls (void)
4921 {
4922 mono_register_jit_icall (enter_method, "mono_enter_method", NULL, TRUE);
4923 mono_register_jit_icall (leave_method, "mono_leave_method", NULL, TRUE);
4924 }
4925
4926 /*========================= End of Function ========================*/
4927
4928 /*------------------------------------------------------------------*/
4929 /* */
4930 /* Name - mono_arch_patch_code */
4931 /* */
4932 /* Function - Process the patch data created during the */
4933 /* instruction build process. This resolves jumps, */
4934 /* calls, variables etc. */
4935 /* */
4936 /*------------------------------------------------------------------*/
4937
4938 void
4939 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain, guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4940 {
4941 MonoJumpInfo *patch_info;
4942
4943 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4944 unsigned char *ip = patch_info->ip.i + code;
4945 guint64 target = 0;
4946
4947 switch (patch_info->type) {
4948 case MONO_PATCH_INFO_BB:
4949 target = S390_RELATIVE((patch_info->data.bb->native_offset+code),
4950 ip);
4951 ip += 2; /* Skip over op-code */
4952 break;
4953 case MONO_PATCH_INFO_ABS:
4954 *((gpointer *)(ip)) = patch_info->data.target;
4955 break;
4956 case MONO_PATCH_INFO_LABEL:
4957 target = S390_RELATIVE((patch_info->data.inst->inst_c0+code),ip);
4958 ip += 2; /* Skip over op-code */
4959 break;
4960 case MONO_PATCH_INFO_IP:
4961 target = ip;
4962 continue;
4963 case MONO_PATCH_INFO_METHOD_REL:
4964 g_assert_not_reached ();
4965 *((gpointer *)(ip)) = code + patch_info->data.offset;
4966 continue;
4967 case MONO_PATCH_INFO_INTERNAL_METHOD: {
4968 MonoJitICallInfo *mi = mono_find_jit_icall_by_name (patch_info->data.name);
4969 if (!mi) {
4970 g_warning ("unknown MONO_PATCH_INFO_INTERNAL_METHOD %s", patch_info->data.name);
4971 g_assert_not_reached ();
4972 }
4973 *((gpointer *)(ip)) = mono_icall_get_wrapper (mi);
4974 break;
4975 }
4976 case MONO_PATCH_INFO_METHOD_JUMP: {
4977 GSList *list;
4978
4979 /*------------------------------------------------------*/
4980 /* get the trampoline to the method from the domain */
4981 /*------------------------------------------------------*/
4982 *((gpointer *)(ip)) = mono_create_jump_trampoline (
4983 domain,
4984 patch_info->data.method,
4985 TRUE);
4986
4987
4988 list = g_hash_table_lookup (domain->jump_target_hash,
4989 patch_info->data.method);
4990 list = g_slist_prepend (list, ip);
4991 g_hash_table_insert (domain->jump_target_hash,
4992 patch_info->data.method, list);
4993 break;
4994 }
4995 case MONO_PATCH_INFO_METHOD:
4996 if (patch_info->data.method == method) {
4997 *((gpointer *)(ip)) = code;
4998 } else {
4999 /* get the trampoline to the method from the domain */
5000 *((gpointer *)(ip)) = mono_arch_create_jit_trampoline(patch_info->data.method);
5001 }
5002 break;
5003 case MONO_PATCH_INFO_SWITCH: {
5004 gpointer *table = (gpointer *)patch_info->data.target;
5005 int i;
5006 /*------------------------------------------------------*/
5007 /* ip is pointing at the basr r13,0/j +4 instruction */
5008 /* the vtable value follows this (i.e. ip+6) */
5009 /*------------------------------------------------------*/
5010 *((gconstpointer *)(ip+6)) = table;
5011
5012 for (i = 0; i < patch_info->table_size; i++) {
5013 table [i] = (int)patch_info->data.table [i] + code;
5014 }
5015 continue;
5016 }
5017 case MONO_PATCH_INFO_METHODCONST:
5018 case MONO_PATCH_INFO_CLASS:
5019 case MONO_PATCH_INFO_IMAGE:
5020 case MONO_PATCH_INFO_FIELD:
5021 target = S390_RELATIVE(patch_info->data.target, ip);
5022 continue;
5023 case MONO_PATCH_INFO_R4:
5024 case MONO_PATCH_INFO_R8:
5025 g_assert_not_reached ();
5026 *((gconstpointer *)(ip + 2)) = patch_info->data.target;
5027 continue;
5028 case MONO_PATCH_INFO_IID:
5029 mono_class_init (patch_info->data.klass);
5030 target = S390_RELATIVE(patch_info->data.klass->interface_id, ip);
5031 continue;
5032 case MONO_PATCH_INFO_VTABLE:
5033 target = S390_RELATIVE(mono_class_vtable (domain, patch_info->data.klass),ip);
5034 ip += 2;
5035 continue;
5036 case MONO_PATCH_INFO_CLASS_INIT:
5037 target = S390_RELATIVE(mono_create_class_init_trampoline (mono_class_vtable (domain, patch_info->data.klass)), ip);
5038 ip += 2;
5039 break;
5040 case MONO_PATCH_INFO_SFLDA: {
5041 MonoVTable *vtable = mono_class_vtable (domain, patch_info->data.field->parent);
5042 if (!vtable->initialized && !(vtable->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) && mono_class_needs_cctor_run (vtable->klass, method))
5043 /* Done by the generated code */
5044 ;
5045 else {
5046 if (run_cctors)
5047 mono_runtime_class_init (vtable);
5048 }
5049 target = S390_RELATIVE((char*)vtable->data + patch_info->data.field->offset, ip);
5050 ip += 2;
5051 continue;
5052 }
5053 case MONO_PATCH_INFO_EXC_NAME:
5054 *((gconstpointer *)(ip)) = patch_info->data.name;
5055 continue;
5056 case MONO_PATCH_INFO_LDSTR:
5057 target = mono_ldstr (domain, patch_info->data.token->image,
5058 mono_metadata_token_index (patch_info->data.token->token));
5059 continue;
5060 case MONO_PATCH_INFO_TYPE_FROM_HANDLE: {
5061 gpointer handle;
5062 MonoClass *handle_class;
5063
5064 handle = mono_ldtoken (patch_info->data.token->image,
5065 patch_info->data.token->token,
5066 &handle_class, NULL);
5067 mono_class_init (handle_class);
5068 mono_class_init (mono_class_from_mono_type (handle));
5069
5070 target = handle;
5071 continue;
5072 }
5073 case MONO_PATCH_INFO_LDTOKEN: {
5074 gpointer handle;
5075 MonoClass *handle_class;
5076
5077 handle = mono_ldtoken (patch_info->data.token->image,
5078 patch_info->data.token->token,
5079 &handle_class, NULL);
5080 mono_class_init (handle_class);
5081
5082 target = handle;
5083 continue;
5084 }
5085 case MONO_PATCH_INFO_EXC:
5086 /* everything is dealt with at epilog output time */
5087 continue;
5088 default:
5089 g_assert_not_reached ();
5090 }
5091 s390_patch (ip, target);
5092 }
5093 }
5094
5095 /*========================= End of Function ========================*/
5096
5097 /*------------------------------------------------------------------*/
5098 /* */
5099 /* Name - mono_arch_max_epilog_size */
5100 /* */
5101 /* Function - Determine the maximum size of the epilog code. */
5102 /* */
5103 /*------------------------------------------------------------------*/
5104
5105 int
5106 mono_arch_max_epilog_size (MonoCompile *cfg)
5107 {
5108 int max_epilog_size = 96;
5109 MonoJumpInfo *patch_info;
5110
5111 if (cfg->method->save_lmf)
5112 max_epilog_size += 128;
5113
5114 if (mono_jit_trace_calls != NULL)
5115 max_epilog_size += 128;
5116
5117 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
5118 max_epilog_size += 128;
5119
5120 /* count the number of exception infos */
5121
5122 for (patch_info = cfg->patch_info;
5123 patch_info;
5124 patch_info = patch_info->next) {
5125 if (patch_info->type == MONO_PATCH_INFO_EXC)
5126 max_epilog_size += 26;
5127 }
5128
5129 return max_epilog_size;
5130 }
5131
5132 /*========================= End of Function ========================*/
5133
5134 /*------------------------------------------------------------------*/
5135 /* */
5136 /* Name - mono_arch_emit_prolog */
5137 /* */
5138 /* Function - Create the instruction sequence for a function */
5139 /* prolog. */
5140 /* */
5141 /*------------------------------------------------------------------*/
5142
5143 guint8 *
5144 mono_arch_emit_prolog (MonoCompile *cfg)
5145 {
5146 MonoMethod *method = cfg->method;
5147 MonoBasicBlock *bb;
5148 MonoMethodSignature *sig;
5149 MonoInst *inst;
5150 int alloc_size, pos, max_offset, i, lmfOffset;
5151 guint8 *code;
5152 CallInfo *cinfo;
5153 size_data sz;
5154 int tracing = 0;
5155
5156 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
5157 tracing = 1;
5158
5159 cfg->code_size = 384;
5160 cfg->native_code = code = g_malloc (cfg->code_size);
5161
5162 if (cfg->flags & MONO_CFG_HAS_TAIL) {
5163 s390_stmg (code, s390_r2, s390_r14, STK_BASE, S390_PARM_SAVE_OFFSET);
5164 for (pos = 0; pos < 4; pos++)
5165 s390_std (code, pos*2, 0, STK_BASE,
5166 S390_FLOAT_SAVE_OFFSET+pos*sizeof(double));
5167 } else {
5168 s390_stmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
5169 }
5170
5171 if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
5172 cfg->used_int_regs |= 1 << 11;
5173 }
5174
5175 alloc_size = cfg->stack_offset;
5176
5177 cfg->stack_usage = alloc_size;
5178 s390_lgr (code, s390_r11, STK_BASE);
5179 if (s390_is_imm16 (-alloc_size)) {
5180 s390_aghi (code, STK_BASE, -alloc_size);
5181 } else {
5182 int stackSize = alloc_size;
5183 while (stackSize > 32767) {
5184 s390_aghi (code, STK_BASE, -32767);
5185 stackSize -= 32767;
5186 }
5187 s390_aghi (code, STK_BASE, -stackSize);
5188 }
5189 s390_stg (code, s390_r11, 0, STK_BASE, 0);
5190
5191 if (cfg->frame_reg != STK_BASE)
5192 s390_lgr (code, s390_r11, STK_BASE);
5193
5194 /* compute max_offset in order to use short forward jumps
5195 * we always do it on s390 because the immediate displacement
5196 * for jumps is too small
5197 */
5198 max_offset = 0;
5199 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
5200 MonoInst *ins = bb->code;
5201 bb->max_offset = max_offset;
5202
5203 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
5204 max_offset += 6;
5205
5206 while (ins) {
5207 max_offset += ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
5208 ins = ins->next;
5209 }
5210 }
5211
5212 /* load arguments allocated to register from the stack */
5213 sig = method->signature;
5214 pos = 0;
5215
5216 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
5217
5218 if (cinfo->struct_ret) {
5219 ArgInfo *ainfo = &cinfo->ret;
5220 inst = cfg->ret;
5221 inst->unused = ainfo->vtsize;
5222 s390_stg (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
5223 }
5224
5225 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
5226 ArgInfo *ainfo = cinfo->args + i;
5227 inst = cfg->varinfo [pos];
5228
5229 if (inst->opcode == OP_REGVAR) {
5230 if (ainfo->regtype == RegTypeGeneral)
5231 s390_lgr (code, inst->dreg, ainfo->reg);
5232 else if (ainfo->regtype == RegTypeFP) {
5233 if (inst->dreg != ainfo->reg) {
5234 if (ainfo->size == 4) {
5235 s390_ledbr (code, inst->dreg, ainfo->reg);
5236 } else {
5237 s390_ldr (code, inst->dreg, ainfo->reg);
5238 }
5239 }
5240 }
5241 else if (ainfo->regtype == RegTypeBase) {
5242 s390_lgr (code, s390_r13, STK_BASE);
5243 s390_aghi(code, s390_r13, alloc_size);
5244 s390_lg (code, inst->dreg, 0, s390_r13, ainfo->offset);
5245 } else
5246 g_assert_not_reached ();
5247
5248 if (cfg->verbose_level > 2)
5249 g_print ("Argument %d assigned to register %s\n",
5250 pos, mono_arch_regname (inst->dreg));
5251 } else {
5252 if (ainfo->regtype == RegTypeGeneral) {
5253 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
5254 g_assert_not_reached();
5255 switch (ainfo->size) {
5256 case 1:
5257 s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
5258 break;
5259 case 2:
5260 s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
5261 break;
5262 case 8:
5263 s390_stg (code, ainfo->reg, 0,
5264 inst->inst_basereg, inst->inst_offset);
5265 break;
5266 default:
5267 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
5268 }
5269 } else if (ainfo->regtype == RegTypeBase) {
5270 } else if (ainfo->regtype == RegTypeFP) {
5271 if (ainfo->size == 8)
5272 s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
5273 else if (ainfo->size == 4)
5274 s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
5275 else
5276 g_assert_not_reached ();
5277 } else if (ainfo->regtype == RegTypeStructByVal) {
5278 int doffset = inst->inst_offset;
5279 int reg;
5280 if (ainfo->reg != STK_BASE)
5281 reg = ainfo->reg;
5282 else {
5283 reg = s390_r0;
5284 s390_lgr (code, s390_r13, STK_BASE);
5285 s390_aghi(code, s390_r13, alloc_size);
5286 }
5287 switch (ainfo->size) {
5288 case 1:
5289 if (ainfo->reg == STK_BASE)
5290 s390_ic (code, reg, 0, s390_r13, ainfo->offset+3);
5291 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
5292 break;
5293 case 2:
5294 if (ainfo->reg == STK_BASE)
5295 s390_lh (code, reg, 0, s390_r13, ainfo->offset+2);
5296 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
5297 break;
5298 case 4:
5299 if (ainfo->reg == STK_BASE)
5300 s390_l (code, reg, 0, s390_r13, ainfo->offset);
5301 s390_st (code, reg, 0, inst->inst_basereg, doffset);
5302 break;
5303 case 8:
5304 if (ainfo->reg == STK_BASE)
5305 s390_lg (code, s390_r0, 0, s390_r13, ainfo->offset);
5306 s390_stg (code, reg, 0, inst->inst_basereg, doffset);
5307 break;
5308 }
5309 } else if (ainfo->regtype == RegTypeStructByAddr) {
5310 if (ainfo->reg == STK_BASE) {
5311 s390_lgr (code, s390_r13, ainfo->reg);
5312 s390_aghi(code, s390_r13, alloc_size);
5313 s390_lg (code, s390_r13, 0, s390_r13,
5314 ainfo->offparm + S390_MINIMAL_STACK_SIZE);
5315 code = emit_memcpy (code, abs(ainfo->vtsize),
5316 inst->inst_basereg,
5317 inst->inst_offset, s390_r13, 0);
5318 } else {
5319 code = emit_memcpy (code, abs(ainfo->vtsize),
5320 inst->inst_basereg,
5321 inst->inst_offset,
5322 ainfo->reg, 0);
5323 }
5324 } else
5325 g_assert_not_reached ();
5326 }
5327 pos++;
5328 }
5329
5330 if (method->save_lmf) {
5331 /*---------------------------------------------------------------*/
5332 /* Preserve the parameter registers while we fix up the lmf */
5333 /*---------------------------------------------------------------*/
5334 s390_lgr (code, s390_r7, s390_r2);
5335 s390_lgr (code, s390_r8, s390_r3);
5336 s390_lgr (code, s390_r9, s390_r4);
5337 s390_lgr (code, s390_r10, s390_r5);
5338
5339 /*---------------------------------------------------------------*/
5340 /* On return from this call r2 have the address of the &lmf */
5341 /*---------------------------------------------------------------*/
5342 s390_basr(code, s390_r13, 0);
5343 s390_j (code, 6);
5344 mono_add_patch_info (cfg, code - cfg->native_code,
5345 MONO_PATCH_INFO_INTERNAL_METHOD,
5346 (gpointer)"mono_get_lmf_addr");
5347 s390_llong(code, 0);
5348 s390_lg (code, s390_r1, 0, s390_r13, 4);
5349 s390_basr (code, s390_r14, s390_r1);
5350
5351 /*---------------------------------------------------------------*/
5352 /* we build the MonoLMF structure on the stack - see mini-s390.h */
5353 /*---------------------------------------------------------------*/
5354 lmfOffset = alloc_size - sizeof(MonoLMF);
5355
5356 s390_lgr (code, s390_r13, cfg->frame_reg);
5357 s390_aghi (code, s390_r13, lmfOffset);
5358
5359 /*---------------------------------------------------------------*/
5360 /* Set lmf.lmf_addr = jit_tls->lmf */
5361 /*---------------------------------------------------------------*/
5362 s390_stg (code, s390_r2, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
5363
5364 /*---------------------------------------------------------------*/
5365 /* Get current lmf */
5366 /*---------------------------------------------------------------*/
5367 s390_lg (code, s390_r0, 0, s390_r2, 0);
5368
5369 /*---------------------------------------------------------------*/
5370 /* Set our lmf as the current lmf */
5371 /*---------------------------------------------------------------*/
5372 s390_stg (code, s390_r13, 0, s390_r2, 0);
5373
5374 /*---------------------------------------------------------------*/
5375 /* Have our lmf.previous_lmf point to the last lmf */
5376 /*---------------------------------------------------------------*/
5377 s390_stg (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
5378
5379 /*---------------------------------------------------------------*/
5380 /* save method info */
5381 /*---------------------------------------------------------------*/
5382 s390_basr (code, s390_r1, 0);
5383 s390_j (code, 6);
5384 s390_llong (code, method);
5385 s390_lg (code, s390_r1, 0, s390_r1, 4);
5386 s390_stg (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, method));
5387
5388 /*---------------------------------------------------------------*/
5389 /* save the current IP */
5390 /*---------------------------------------------------------------*/
5391 s390_lgr (code, s390_r1, cfg->frame_reg);
5392 s390_stg (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
5393 s390_lg (code, s390_r1, 0, s390_r1, S390_RET_ADDR_OFFSET);
5394 s390_la (code, s390_r1, 0, s390_r1, 0);
5395 s390_stg (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
5396
5397 /*---------------------------------------------------------------*/
5398 /* Save general and floating point registers */
5399 /*---------------------------------------------------------------*/
5400 s390_stmg (code, s390_r2, s390_r12, s390_r13, G_STRUCT_OFFSET(MonoLMF, gregs[2]));
5401 for (i = 0; i < 16; i++) {
5402 s390_std (code, i, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, fregs[i]));
5403 }
5404
5405 /*---------------------------------------------------------------*/
5406 /* Restore the parameter registers now that we've set up the lmf */
5407 /*---------------------------------------------------------------*/
5408 s390_lgr (code, s390_r2, s390_r7);
5409 s390_lgr (code, s390_r3, s390_r8);
5410 s390_lgr (code, s390_r4, s390_r9);
5411 s390_lgr (code, s390_r5, s390_r10);
5412 }
5413
5414 if (tracing)
5415 code = mono_arch_instrument_prolog (cfg, enter_method, code, TRUE);
5416
5417 cfg->code_len = code - cfg->native_code;
5418
5419 g_assert(cfg->code_len < cfg->code_size);
5420 g_free (cinfo);
5421
5422 return code;
5423 }
5424
5425 /*========================= End of Function ========================*/
5426
5427 /*------------------------------------------------------------------*/
5428 /* */
5429 /* Name - mono_arch_emit_epilog */
5430 /* */
5431 /* Function - Emit the instructions for a function epilog. */
5432 /* */
5433 /*------------------------------------------------------------------*/
5434
5435 void
5436 mono_arch_emit_epilog (MonoCompile *cfg)
5437 {
5438 MonoJumpInfo *patch_info;
5439 MonoMethod *method = cfg->method;
5440 MonoMethodSignature *sig = method->signature;
5441 MonoInst *inst;
5442 int i, tracing = 0;
5443 guint8 *code;
5444
5445 code = cfg->native_code + cfg->code_len;
5446
5447 if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
5448 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
5449 tracing = 1;
5450 }
5451
5452 if (method->save_lmf)
5453 code = restoreLMF(cfg, code);
5454
5455 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
5456 s390_lg (code, STK_BASE, 0, STK_BASE, 0);
5457 else
5458 code = backUpStackPtr(cfg, code);
5459
5460 s390_lmg (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
5461 s390_br (code, s390_r14);
5462
5463 /* add code to raise exceptions */
5464 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
5465 switch (patch_info->type) {
5466 case MONO_PATCH_INFO_EXC: {
5467 /*---------------------------------------------*/
5468 /* Patch the branch in epilog to come here */
5469 /*---------------------------------------------*/
5470 s390_patch (patch_info->ip.i+cfg->native_code+2,
5471 S390_RELATIVE(code,patch_info->ip.i+cfg->native_code));
5472 /*---------------------------------------------*/
5473 /* Patch the parameter passed to the handler */
5474 /*---------------------------------------------*/
5475 s390_basr (code, s390_r13, 0);
5476 s390_j (code, 6);
5477 mono_add_patch_info (cfg, code - cfg->native_code,
5478 MONO_PATCH_INFO_EXC_NAME,
5479 patch_info->data.target);
5480 s390_llong(code, 0);
5481 /*-----------------------------------------------------*/
5482 /* Load the return address and the parameter register */
5483 /*-----------------------------------------------------*/
5484 s390_larl (code, s390_r14, S390_RELATIVE((patch_info->ip.i +
5485 cfg->native_code + 8), code));
5486 s390_lg (code, s390_r2, 0, s390_r13, 4);
5487 /*-----------------------------------------------------*/
5488 /* Reuse the current patch to set the jump */
5489 /*-----------------------------------------------------*/
5490 s390_basr (code, s390_r13, 0);
5491 s390_j (code, 6);
5492 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
5493 patch_info->data.name = "mono_arch_throw_exception_by_name";
5494 patch_info->ip.i = code - cfg->native_code;
5495 s390_llong(code, 0);
5496 s390_lg (code, s390_r1, 0, s390_r13, 4);
5497 s390_br (code, s390_r1);
5498 break;
5499 }
5500 default:
5501 /* do nothing */
5502 break;
5503 }
5504 }
5505
5506 cfg->code_len = code - cfg->native_code;
5507
5508 g_assert (cfg->code_len < cfg->code_size);
5509
5510 }
5511
5512 /*========================= End of Function ========================*/
5513
5514 /*------------------------------------------------------------------*/
5515 /* */
5516 /* Name - mono_arch_setup_jit_tls_data */
5517 /* */
5518 /* Function - Setup the JIT's Thread Level Specific Data. */
5519 /* */
5520 /*------------------------------------------------------------------*/
5521
5522 void
5523 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
5524 {
5525 }
5526
5527 /*========================= End of Function ========================*/
5528
5529 /*------------------------------------------------------------------*/
5530 /* */
5531 /* Name - mono_arch_free_jit_tls_data */
5532 /* */
5533 /* Function - Free tls data. */
5534 /* */
5535 /*------------------------------------------------------------------*/
5536
5537 void
5538 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
5539 {
5540 }
5541
5542 /*========================= End of Function ========================*/
5543
5544 /*------------------------------------------------------------------*/
5545 /* */
5546 /* Name - mono_arch_emit_this_vret_args */
5547 /* */
5548 /* Function - */
5549 /* */
5550 /*------------------------------------------------------------------*/
5551
5552 void
5553 mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_reg, int this_type, int vt_reg)
5554 {
5555 int this_dreg = s390_r2;
5556
5557 if (vt_reg != -1)
5558 this_dreg = s390_r3;
5559
5560 /* add the this argument */
5561 if (this_reg != -1) {
5562 MonoInst *this;
5563 MONO_INST_NEW (cfg, this, OP_SETREG);
5564 this->type = this_type;
5565 this->sreg1 = this_reg;
5566 this->dreg = this_dreg;
5567 mono_bblock_add_inst (cfg->cbb, this);
5568 }
5569
5570 if (vt_reg != -1) {
5571 MonoInst *vtarg;
5572 MONO_INST_NEW (cfg, vtarg, OP_SETREG);
5573 vtarg->type = STACK_MP;
5574 vtarg->sreg1 = vt_reg;
5575 vtarg->dreg = s390_r2;
5576 mono_bblock_add_inst (cfg->cbb, vtarg);
5577 }
5578 }
5579
5580 /*========================= End of Function ========================*/
5581
5582 /*------------------------------------------------------------------*/
5583 /* */
5584 /* Name - mono_arch_get_opcode_for_method */
5585 /* */
5586 /* Function - Check for opcodes we can handle directly in */
5587 /* hardware. */
5588 /* */
5589 /*------------------------------------------------------------------*/
5590
5591 gint
5592 mono_arch_get_opcode_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
5593 {
5594 if (cmethod->klass == mono_defaults.math_class) {
5595 if (strcmp (cmethod->name, "Sqrt") == 0)
5596 return OP_SQRT;
5597 }
5598 return -1;
5599 }
5600
5601 /*========================= End of Function ========================*/
5602
5603 /*------------------------------------------------------------------*/
5604 /* */
5605 /* Name - mono_arch_print_tree */
5606 /* */
5607 /* Function - Print platform-specific opcode details. */
5608 /* */
5609 /* Returns - 1 - opcode details have been printed */
5610 /* 0 - opcode details have not been printed */
5611 /* */
5612 /*------------------------------------------------------------------*/
5613
5614 gboolean
5615 mono_arch_print_tree (MonoInst *tree, int arity)
5616 {
5617 gboolean done;
5618
5619 switch (tree->opcode) {
5620 case OP_S390_LOADARG:
5621 case OP_S390_ARGPTR:
5622 case OP_S390_STKARG:
5623 printf ("[0x%x(%s)]", tree->inst_offset,
5624 mono_arch_regname (tree->inst_basereg));
5625 done = 1;
5626 break;
5627 case OP_S390_MOVE:
5628 printf ("[0x%x(%d,%s),0x%x(%s)]",
5629 tree->inst_offset, tree->unused,
5630 tree->dreg, tree->inst_imm,
5631 tree->sreg1);
5632 done = 1;
5633 break;
5634 case OP_S390_SETF4RET:
5635 printf ("[f%d,f%d]",
5636 mono_arch_regname (tree->dreg),
5637 mono_arch_regname (tree->sreg1));
5638 default:
5639 done = 0;
5640 }
5641 return (done);
5642 }
5643
5644 /*========================= End of Function ========================*/
5645
5646 /*------------------------------------------------------------------*/
5647 /* */
5648 /* Name - mono_arch_regalloc_cost */
5649 /* */
5650 /* Function - Determine the cost, in the number of memory */
5651 /* references, of the action of allocating the var- */
5652 /* iable VMV into a register during global register */
5653 /* allocation. */
5654 /* */
5655 /* Returns - Cost */
5656 /* */
5657 /*------------------------------------------------------------------*/
5658
5659 guint32
5660 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
5661 {
5662 /* FIXME: */
5663 return 3;
5664 }
5665
5666 /*========================= End of Function ========================*/
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