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Further exception handling refinement for JIT
[mono-project.git] / mono / mini / mini-s390.c
blobb64b39e4ee6b2bdd88cbb1acb27890b05949ae24
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 if (ins->flags & MONO_INST_BRLABEL) { \
26 if (ins->inst_i0->inst_c0) { \
27 int displace; \
28 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2; \
29 if (s390_is_uimm16(displace)) { \
30 s390_brc (code, cond, displace); \
31 } else { \
32 s390_jcl (code, cond, displace); \
33 } \
34 } else { \
35 mono_add_patch_info (cfg, code - cfg->native_code, \
36 MONO_PATCH_INFO_LABEL, ins->inst_i0); \
37 s390_jcl (code, cond, 0); \
38 } \
39 } else { \
40 if (ins->inst_true_bb->native_offset) { \
41 int displace; \
42 displace = ((cfg->native_code + \
43 ins->inst_true_bb->native_offset) - code) / 2; \
44 if (s390_is_uimm16(displace)) { \
45 s390_brc (code, cond, displace); \
46 } else { \
47 s390_jcl (code, cond, displace); \
48 } \
49 } else { \
50 mono_add_patch_info (cfg, code - cfg->native_code, \
51 MONO_PATCH_INFO_BB, ins->inst_true_bb); \
52 s390_jcl (code, cond, 0); \
53 } \
54 }
55
56 #define EMIT_UNCOND_BRANCH(ins) \
57 if (ins->flags & MONO_INST_BRLABEL) { \
58 if (ins->inst_i0->inst_c0) { \
59 int displace; \
60 displace = ((cfg->native_code + ins->inst_i0->inst_c0) - code) / 2; \
61 if (s390_is_uimm16(displace)) { \
62 s390_brc (code, S390_CC_UN, displace); \
63 } else { \
64 s390_jcl (code, S390_CC_UN, displace); \
65 } \
66 } else { \
67 mono_add_patch_info (cfg, code - cfg->native_code, \
68 MONO_PATCH_INFO_LABEL, ins->inst_i0); \
69 s390_jcl (code, S390_CC_UN, 0); \
70 } \
71 } else { \
72 if (ins->inst_target_bb->native_offset) { \
73 int displace; \
74 displace = ((cfg->native_code + \
75 ins->inst_target_bb->native_offset) - code) / 2; \
76 if (s390_is_uimm16(displace)) { \
77 s390_brc (code, S390_CC_UN, displace); \
78 } else { \
79 s390_jcl (code, S390_CC_UN, displace); \
80 } \
81 } else { \
82 mono_add_patch_info (cfg, code - cfg->native_code, \
83 MONO_PATCH_INFO_BB, ins->inst_target_bb); \
84 s390_jcl (code, S390_CC_UN, 0); \
85 } \
86 }
87
88 #define EMIT_COND_SYSTEM_EXCEPTION(cond,exc_name) \
89 do { \
90 mono_add_patch_info (cfg, code - cfg->native_code, \
91 MONO_PATCH_INFO_EXC, exc_name); \
92 s390_jcl (code, cond, 0); \
93 } while (0);
94
95 #undef DEBUG
96 #define DEBUG(a) if (cfg->verbose_level > 1) a
97 #define reg_is_freeable(r) ((r) >= 3 && (r) <= 10)
98 #define freg_is_freeable(r) ((r) >= 1 && (r) <= 14)
99
100 /*----------------------------------------*/
101 /* use s390_r3-s390_r10 as temp registers */
102 /*----------------------------------------*/
103 #define S390_CALLER_REGS (0x03f8)
104
105 /*----------------------------------------*/
106 /* use s390_f2-s390_f14 as temp registers */
107 /*----------------------------------------*/
108 #define S390_CALLER_FREGS (0x73f8)
109
110 #define S390_TRACE_STACK_SIZE (5*sizeof(gint32)+3*sizeof(gdouble))
111
112 /*========================= End of Defines =========================*/
113
114 /*------------------------------------------------------------------*/
115 /* I n c l u d e s */
116 /*------------------------------------------------------------------*/
117
118 #include "mini.h"
119 #include <string.h>
120
121 #include <mono/metadata/appdomain.h>
122 #include <mono/metadata/debug-helpers.h>
123
124 #include "mini-s390.h"
125 #include "inssel.h"
126 #include "cpu-s390.h"
127
128 /*========================= End of Includes ========================*/
129
130 /*------------------------------------------------------------------*/
131 /* T y p e d e f s */
132 /*------------------------------------------------------------------*/
133
134 typedef struct {
135 guint stack_size,
136 local_size,
137 code_size,
138 retStruct;
139 } size_data;
140
141 /*------------------------------------------------------------------*/
142 /* Used by the instrument_emit_epilog */
143 /*------------------------------------------------------------------*/
144
145 enum {
146 SAVE_NONE,
147 SAVE_STRUCT,
148 SAVE_ONE,
149 SAVE_TWO,
150 SAVE_FP
151 };
152
153 typedef struct {
154 int born_in;
155 int killed_in;
156 int last_use;
157 int prev_use;
158 } RegTrack;
159
160 typedef struct InstList InstList;
161
162 struct InstList {
163 InstList *prev;
164 InstList *next;
165 MonoInst *data;
166 };
167
168 enum {
169 RegTypeGeneral,
170 RegTypeBase,
171 RegTypeFP,
172 RegTypeStructByVal,
173 RegTypeStructByAddr
174 };
175
176 typedef struct {
177 gint32 offset; /* offset from caller's stack */
178 gint32 offparm; /* offset on callee's stack */
179 guint16 vtsize; /* in param area */
180 guint8 reg;
181 guint8 regtype; /* See RegType* */
182 guint32 size; /* Size of structure used by RegTypeStructByVal */
183 } ArgInfo;
184
185 typedef struct {
186 int nargs;
187 guint32 stack_usage;
188 guint32 struct_ret;
189 ArgInfo ret;
190 ArgInfo args [1];
191 } CallInfo;
192
193 typedef struct {
194 gint32 gr[5]; /* R2-R6 */
195 gdouble fp[3]; /* F0-F2 */
196 } __attribute__ ((packed)) RegParm;
197
198 /*========================= End of Typedefs ========================*/
199
200 /*------------------------------------------------------------------*/
201 /* P r o t o t y p e s */
202 /*------------------------------------------------------------------*/
203
204 static guint32 *emit_memcpy (guint8 *, int, int, int, int, int);
205 static void indent (int);
206 static void decodeParm (MonoType *, void *, int);
207 static void enter_method (MonoMethod *, RegParm *, char *);
208 static void leave_method (MonoMethod *, ...);
209 static gboolean is_regsize_var (MonoType *);
210 static void add_general (guint *, size_data *, ArgInfo *, gboolean);
211 static CallInfo * calculate_sizes (MonoMethodSignature *, size_data *, gboolean);
212 static void peephole_pass (MonoCompile *, MonoBasicBlock *);
213 static int mono_spillvar_offset (MonoCompile *, int);
214 static int mono_spillvar_offset_float (MonoCompile *, int);
215 static void print_ins (int, MonoInst *);
216 static void print_regtrack (RegTrack *, int);
217 static InstList * inst_list_prepend (MonoMemPool *, InstList *, MonoInst *);
218 static int get_register_force_spilling (MonoCompile *, InstList *, MonoInst *, int);
219 static int get_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
220 static int get_float_register_spilling (MonoCompile *, InstList *, MonoInst *, guint32, int);
221 static MonoInst * create_copy_ins (MonoCompile *, int, int, MonoInst *);
222 static MonoInst * create_copy_ins_float (MonoCompile *, int, int, MonoInst *);
223 static MonoInst * create_spilled_store (MonoCompile *, int, int, int, MonoInst *);
224 static MonoInst * create_spilled_store_float (MonoCompile *, int, int, int, MonoInst *);
225 static void insert_before_ins (MonoInst *, InstList *, MonoInst *);
226 static int alloc_int_reg (MonoCompile *, InstList *, MonoInst *, int, guint32);
227 static guchar * emit_float_to_int (MonoCompile *, guchar *, int, int, int, gboolean);
228 static unsigned char * mono_emit_stack_alloc (guchar *, MonoInst *);
229
230 /*========================= End of Prototypes ======================*/
231
232 /*------------------------------------------------------------------*/
233 /* G l o b a l V a r i a b l e s */
234 /*------------------------------------------------------------------*/
235
236 int mono_exc_esp_offset = 0;
237
238 static int indent_level = 0;
239
240 static const char*const * ins_spec = s390;
241
242 /*====================== End of Global Variables ===================*/
243
244 /*------------------------------------------------------------------*/
245 /* */
246 /* Name - mono_arch_regname */
247 /* */
248 /* Function - Returns the name of the register specified by */
249 /* the input parameter. */
250 /* */
251 /*------------------------------------------------------------------*/
252
253 const char*
254 mono_arch_regname (int reg) {
255 static const char * rnames[] = {
256 "s390_r0", "s390_sp", "s390_r2", "s390_r3", "s390_r4",
257 "s390_r5", "s390_r6", "s390_r7", "s390_r8", "s390_r9",
258 "s390_r10", "s390_r11", "s390_r12", "s390_r13", "s390_r14",
259 "s390_r15"
260 };
261 if (reg >= 0 && reg < 16)
262 return rnames [reg];
263 return "unknown";
264 }
265
266 /*========================= End of Function ========================*/
267
268 /*------------------------------------------------------------------*/
269 /* */
270 /* Name - emit_memcpy */
271 /* */
272 /* Function - Emit code to move from memory-to-memory based on */
273 /* the size of the variable. r0 is overwritten. */
274 /* */
275 /*------------------------------------------------------------------*/
276
277 static guint32*
278 emit_memcpy (guint8 *code, int size, int dreg, int doffset, int sreg, int soffset)
279 {
280 switch (size) {
281 case 4 :
282 s390_l (code, s390_r0, 0, sreg, soffset);
283 s390_st (code, s390_r0, 0, dreg, doffset);
284 break;
285
286 case 3 :
287 s390_icm (code, s390_r0, 14, sreg, soffset);
288 s390_stcm (code, s390_r0, 14, dreg, doffset);
289 break;
290
291 case 2 :
292 s390_lh (code, s390_r0, 0, sreg, soffset);
293 s390_sth (code, s390_r0, 0, dreg, doffset);
294 break;
295
296 case 1 :
297 s390_ic (code, s390_r0, 0, sreg, soffset);
298 s390_stc (code, s390_r0, 0, dreg, doffset);
299 break;
300
301 default :
302 while (size > 0) {
303 int len;
304
305 if (size > 256)
306 len = 256;
307 else
308 len = size;
309 s390_mvc (code, len, dreg, doffset, sreg, soffset);
310 size -= len;
311 }
312 }
313 return code;
314 }
315
316 /*========================= End of Function ========================*/
317
318 /*------------------------------------------------------------------*/
319 /* */
320 /* Name - arch_get_argument_info */
321 /* */
322 /* Function - Gathers information on parameters such as size, */
323 /* alignment, and padding. arg_info should be large */
324 /* enough to hold param_count + 1 entries. */
325 /* */
326 /* Parameters - @csig - Method signature */
327 /* @param_count - No. of parameters to consider */
328 /* @arg_info - An array to store the result info */
329 /* */
330 /* Returns - Size of the activation frame */
331 /* */
332 /*------------------------------------------------------------------*/
333
334 int
335 mono_arch_get_argument_info (MonoMethodSignature *csig,
336 int param_count,
337 MonoJitArgumentInfo *arg_info)
338 {
339 int k, frame_size = 0;
340 int size, align, pad;
341 int offset = 8;
342
343 if (MONO_TYPE_ISSTRUCT (csig->ret)) {
344 frame_size += sizeof (gpointer);
345 offset += 4;
346 }
347
348 arg_info [0].offset = offset;
349
350 if (csig->hasthis) {
351 frame_size += sizeof (gpointer);
352 offset += 4;
353 }
354
355 arg_info [0].size = frame_size;
356
357 for (k = 0; k < param_count; k++) {
358
359 if (csig->pinvoke)
360 size = mono_type_native_stack_size (csig->params [k], &align);
361 else
362 size = mono_type_stack_size (csig->params [k], &align);
363
364 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
365 arg_info [k].pad = pad;
366 frame_size += size;
367 arg_info [k + 1].pad = 0;
368 arg_info [k + 1].size = size;
369 offset += pad;
370 arg_info [k + 1].offset = offset;
371 offset += size;
372 }
373
374 align = MONO_ARCH_FRAME_ALIGNMENT;
375 frame_size += pad = (align - (frame_size & (align - 1))) & (align - 1);
376 arg_info [k].pad = pad;
377
378 return frame_size;
379 }
380
381 /*========================= End of Function ========================*/
382
383 /*------------------------------------------------------------------*/
384 /* */
385 /* Name - indent */
386 /* */
387 /* Function - Perform nice indenting to current level */
388 /* */
389 /*------------------------------------------------------------------*/
390
391 static void
392 indent (int diff) {
393 int v;
394 if (diff < 0)
395 indent_level += diff;
396 v = indent_level;
397 printf("[%3d] ",v);
398 while (v-- > 0) {
399 printf (". ");
400 }
401 if (diff > 0)
402 indent_level += diff;
403 }
404
405 /*========================= End of Function ========================*/
406
407 /*------------------------------------------------------------------*/
408 /* */
409 /* Name - decodeParm */
410 /* */
411 /* Function - Decode a parameter for the trace. */
412 /* */
413 /*------------------------------------------------------------------*/
414
415 static void
416 decodeParm(MonoType *type, void *curParm, int size)
417 {
418 guint32 simpleType;
419
420 if (type->byref) {
421 printf("[BYREF:%p], ", *((char **) curParm));
422 } else {
423 simpleType = type->type;
424 enum_parmtype:
425 switch (simpleType) {
426 case MONO_TYPE_I :
427 printf ("[INTPTR:%p], ", *((int **) curParm));
428 break;
429 case MONO_TYPE_U :
430 printf ("[UINTPTR:%p], ", *((int **) curParm));
431 break;
432 case MONO_TYPE_BOOLEAN :
433 printf ("[BOOL:%p], ", *((int *) curParm));
434 break;
435 case MONO_TYPE_CHAR :
436 printf ("[CHAR:%p], ", *((int *) curParm));
437 break;
438 case MONO_TYPE_I1 :
439 printf ("[INT1:%d], ", *((int *) curParm+3));
440 break;
441 case MONO_TYPE_I2 :
442 printf ("[INT2:%d], ", *((int *) curParm+2));
443 break;
444 case MONO_TYPE_I4 :
445 printf ("[INT4:%d], ", *((int *) curParm));
446 break;
447 case MONO_TYPE_U1 :
448 printf ("[UINT1:%ud], ", *((unsigned int *) curParm));
449 break;
450 case MONO_TYPE_U2 :
451 printf ("[UINT2:%ud], ", *((unsigned int *) curParm));
452 break;
453 case MONO_TYPE_U4 :
454 printf ("[UINT4:%ud], ", *((unsigned int *) curParm));
455 break;
456 case MONO_TYPE_STRING : {
457 MonoString *s = *((MonoString **) curParm);
458 if (s) {
459 g_assert (((MonoObject *) s)->vtable->klass == mono_defaults.string_class);
460 printf("[STRING:%p:%s], ", s, mono_string_to_utf8(s));
461 } else {
462 printf("[STRING:null], ");
463 }
464 break;
465 }
466 case MONO_TYPE_CLASS :
467 case MONO_TYPE_OBJECT : {
468 MonoObject *obj = *((MonoObject **) curParm);
469 MonoClass *class;
470 if (obj) {
471 printf("[CLASS/OBJ:");
472 class = obj->vtable->klass;
473 if (class == mono_defaults.string_class) {
474 printf("[STRING:%p:%s]",
475 *obj, mono_string_to_utf8 (obj));
476 } else if (class == mono_defaults.int32_class) {
477 printf("[INT32:%p:%d]",
478 obj, *(gint32 *)((char *)obj + sizeof (MonoObject)));
479 } else
480 printf("[%s.%s:%p]",
481 class->name_space, class->name, obj);
482 printf("], ");
483 } else {
484 printf("[OBJECT:null], ");
485 }
486 break;
487 }
488 case MONO_TYPE_PTR :
489 printf("[PTR:%p], ", *((gpointer **) (curParm)));
490 break;
491 case MONO_TYPE_FNPTR :
492 printf("[FNPTR:%p], ", *((gpointer **) (curParm)));
493 break;
494 case MONO_TYPE_ARRAY :
495 printf("[ARRAY:%p], ", *((gpointer **) (curParm)));
496 break;
497 case MONO_TYPE_SZARRAY :
498 printf("[SZARRAY:%p], ", *((gpointer **) (curParm)));
499 break;
500 case MONO_TYPE_I8 :
501 printf("[INT8:%lld], ", *((gint64 *) (curParm)));
502 break;
503 case MONO_TYPE_R4 :
504 printf("[FLOAT4:%f], ", *((float *) (curParm)));
505 break;
506 case MONO_TYPE_R8 :
507 printf("[FLOAT8:%g], ", *((double *) (curParm)));
508 break;
509 case MONO_TYPE_VALUETYPE : {
510 int i;
511 if (type->data.klass->enumtype) {
512 simpleType = type->data.klass->enum_basetype->type;
513 printf("{VALUETYPE} - ");
514 goto enum_parmtype;
515 }
516 printf("[VALUETYPE:");
517 for (i = 0; i < size; i++)
518 printf("%02x,", *((guint8 *)curParm+i));
519 printf("]");
520 break;
521 }
522 default :
523 printf("[?? - %d], ",simpleType);
524 }
525 }
526 }
527
528 /*========================= End of Function ========================*/
529
530 /*------------------------------------------------------------------*/
531 /* */
532 /* Name - enter_method */
533 /* */
534 /* Function - Perform tracing of the entry to the current */
535 /* method. */
536 /* */
537 /*------------------------------------------------------------------*/
538
539 static void
540 enter_method (MonoMethod *method, RegParm *rParm, char *sp)
541 {
542 int i, oParm = 0;
543 MonoClass *class;
544 MonoObject *obj;
545 MonoJitArgumentInfo *arg_info;
546 MonoMethodSignature *sig;
547 char *fname;
548 CallInfo *cinfo;
549 ArgInfo *ainfo;
550 size_data sz;
551
552 fname = mono_method_full_name (method, TRUE);
553 indent (1);
554 printf ("ENTER: %s(", fname);
555 g_free (fname);
556
557 printf (") ip: %p sp: %p\n", __builtin_return_address (1), sp);
558
559 if (rParm == NULL)
560 return;
561
562 sig = method->signature;
563
564 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
565
566 if (cinfo->struct_ret) {
567 printf ("[VALUERET:%p], ", rParm->gr[0]);
568 oParm = 1;
569 }
570
571 if (sig->hasthis) {
572 gpointer *this = (gpointer *) rParm->gr[oParm];
573 obj = (MonoObject *) this;
574 if (method->klass->valuetype) {
575 if (obj) {
576 printf("this:[value:%p:%08x], ",
577 this, *((guint32 *)(this+sizeof(MonoObject))));
578 } else
579 printf ("this:[NULL], ");
580 } else {
581 if (obj) {
582 class = obj->vtable->klass;
583 if (class == mono_defaults.string_class) {
584 printf ("this:[STRING:%p:%s], ",
585 obj, mono_string_to_utf8 ((MonoString *)obj));
586 } else {
587 printf ("this:%p[%s.%s], ",
588 obj, class->name_space, class->name);
589 }
590 } else
591 printf ("this:NULL, ");
592 }
593 oParm++;
594 }
595
596 for (i = 0; i < sig->param_count; ++i) {
597 ainfo = cinfo->args + i + oParm;
598 switch (ainfo->regtype) {
599 case RegTypeGeneral :
600 decodeParm(sig->params[i], &(rParm->gr[ainfo->reg-2]), ainfo->size);
601 break;
602 case RegTypeFP :
603 decodeParm(sig->params[i], &(rParm->fp[ainfo->reg]), ainfo->size);
604 break;
605 case RegTypeBase :
606 decodeParm(sig->params[i], sp+ainfo->offset, ainfo->size);
607 break;
608 case RegTypeStructByVal :
609 if (ainfo->reg != STK_BASE)
610 decodeParm(sig->params[i],
611 &(rParm->gr[ainfo->reg-2]),
612 ainfo->size);
613 else
614 switch (ainfo->vtsize) {
615 case 0:
616 case 1:
617 case 2:
618 case 4:
619 case 8:
620 decodeParm(sig->params[i],
621 sp+ainfo->offset,
622 ainfo->vtsize);
623 break;
624 default:
625 decodeParm(sig->params[i],
626 *((char **) (sp+ainfo->offset)),
627 ainfo->vtsize);
628 }
629 break;
630 default :
631 printf("???, ");
632 }
633 }
634 printf("\n");
635 g_free(cinfo);
636 }
637
638 /*========================= End of Function ========================*/
639
640 /*------------------------------------------------------------------*/
641 /* */
642 /* Name - leave_method */
643 /* */
644 /* Function - */
645 /* */
646 /*------------------------------------------------------------------*/
647
648 static void
649 leave_method (MonoMethod *method, ...)
650 {
651 MonoType *type;
652 char *fname;
653 va_list ap;
654
655 va_start(ap, method);
656
657 fname = mono_method_full_name (method, TRUE);
658 indent (-1);
659 printf ("LEAVE: %s", fname);
660 g_free (fname);
661
662 type = method->signature->ret;
663
664 handle_enum:
665 switch (type->type) {
666 case MONO_TYPE_VOID:
667 break;
668 case MONO_TYPE_BOOLEAN: {
669 int val = va_arg (ap, int);
670 if (val)
671 printf ("[TRUE:%d]", val);
672 else
673 printf ("[FALSE]");
674
675 break;
676 }
677 case MONO_TYPE_CHAR: {
678 int val = va_arg (ap, int);
679 printf ("[CHAR:%d]", val);
680 break;
681 }
682 case MONO_TYPE_I1: {
683 int val = va_arg (ap, int);
684 printf ("[INT1:%d]", val);
685 break;
686 }
687 case MONO_TYPE_U1: {
688 int val = va_arg (ap, int);
689 printf ("[UINT1:%d]", val);
690 break;
691 }
692 case MONO_TYPE_I2: {
693 int val = va_arg (ap, int);
694 printf ("[INT2:%d]", val);
695 break;
696 }
697 case MONO_TYPE_U2: {
698 int val = va_arg (ap, int);
699 printf ("[UINT2:%d]", val);
700 break;
701 }
702 case MONO_TYPE_I4: {
703 int val = va_arg (ap, int);
704 printf ("[INT4:%d]", val);
705 break;
706 }
707 case MONO_TYPE_U4: {
708 int val = va_arg (ap, int);
709 printf ("[UINT4:%d]", val);
710 break;
711 }
712 case MONO_TYPE_I: {
713 int *val = va_arg (ap, int*);
714 printf ("[INT:%p]", val);
715 printf("]");
716 break;
717 }
718 case MONO_TYPE_U: {
719 int *val = va_arg (ap, int*);
720 printf ("[UINT:%p]", val);
721 printf("]");
722 break;
723 }
724 case MONO_TYPE_STRING: {
725 MonoString *s = va_arg (ap, MonoString *);
726 ;
727 if (s) {
728 g_assert (((MonoObject *)s)->vtable->klass == mono_defaults.string_class);
729 printf ("[STRING:%p:%s]", s, mono_string_to_utf8 (s));
730 } else
731 printf ("[STRING:null], ");
732 break;
733 }
734 case MONO_TYPE_CLASS:
735 case MONO_TYPE_OBJECT: {
736 MonoObject *o = va_arg (ap, MonoObject *);
737
738 if (o) {
739 if (o->vtable->klass == mono_defaults.boolean_class) {
740 printf ("[BOOLEAN:%p:%d]", o, *((guint8 *)o + sizeof (MonoObject)));
741 } else if (o->vtable->klass == mono_defaults.int32_class) {
742 printf ("[INT32:%p:%d]", o, *((gint32 *)((char *)o + sizeof (MonoObject))));
743 } else if (o->vtable->klass == mono_defaults.int64_class) {
744 printf ("[INT64:%p:%lld]", o, *((gint64 *)((char *)o + sizeof (MonoObject))));
745 } else
746 printf ("[%s.%s:%p]", o->vtable->klass->name_space, o->vtable->klass->name, o);
747 } else
748 printf ("[OBJECT:%p]", o);
749
750 break;
751 }
752 case MONO_TYPE_PTR:
753 case MONO_TYPE_FNPTR:
754 case MONO_TYPE_ARRAY:
755 case MONO_TYPE_SZARRAY: {
756 gpointer p = va_arg (ap, gpointer);
757 printf ("[result=%p]", p);
758 break;
759 }
760 case MONO_TYPE_I8: {
761 gint64 l = va_arg (ap, gint64);
762 printf ("[LONG:%lld]", l);
763 break;
764 }
765 case MONO_TYPE_R8: {
766 double f = va_arg (ap, double);
767 printf ("[FP:%g]\n", f);
768 break;
769 }
770 case MONO_TYPE_VALUETYPE:
771 if (type->data.klass->enumtype) {
772 type = type->data.klass->enum_basetype;
773 goto handle_enum;
774 } else {
775 guint8 *p = va_arg (ap, gpointer);
776 int j, size, align;
777 size = mono_type_size (type, &align);
778 printf ("[");
779 for (j = 0; p && j < size; j++)
780 printf ("%02x,", p [j]);
781 printf ("]");
782 }
783 break;
784 default:
785 printf ("(unknown return type %x)", method->signature->ret->type);
786 }
787
788 printf (" ip: %p\n", __builtin_return_address (0));
789 }
790
791 /*========================= End of Function ========================*/
792
793 /*------------------------------------------------------------------*/
794 /* */
795 /* Name - mono_arch_cpu_init */
796 /* */
797 /* Function - Perform CPU specific initialization to execute */
798 /* managed code. */
799 /* */
800 /*------------------------------------------------------------------*/
801
802 void
803 mono_arch_cpu_init (void)
804 {
805 }
806
807 /*========================= End of Function ========================*/
808
809 /*------------------------------------------------------------------*/
810 /* */
811 /* Name - mono_arch_cpu_optimizazions */
812 /* */
813 /* Function - Returns the optimizations supported on this CPU */
814 /* */
815 /*------------------------------------------------------------------*/
816
817 guint32
818 mono_arch_cpu_optimizazions (guint32 *exclude_mask)
819 {
820 guint32 opts = 0;
821
822 /* no s390-specific optimizations yet */
823 *exclude_mask = MONO_OPT_INLINE|MONO_OPT_LINEARS;
824 return opts;
825 }
826
827 /*========================= End of Function ========================*/
828
829 /*------------------------------------------------------------------*/
830 /* */
831 /* Name - */
832 /* */
833 /* Function - */
834 /* */
835 /*------------------------------------------------------------------*/
836
837 static gboolean
838 is_regsize_var (MonoType *t) {
839 if (t->byref)
840 return TRUE;
841 switch (t->type) {
842 case MONO_TYPE_I4:
843 case MONO_TYPE_U4:
844 case MONO_TYPE_I:
845 case MONO_TYPE_U:
846 return TRUE;
847 case MONO_TYPE_OBJECT:
848 case MONO_TYPE_STRING:
849 case MONO_TYPE_CLASS:
850 case MONO_TYPE_SZARRAY:
851 case MONO_TYPE_ARRAY:
852 return FALSE;
853 case MONO_TYPE_VALUETYPE:
854 if (t->data.klass->enumtype)
855 return is_regsize_var (t->data.klass->enum_basetype);
856 return FALSE;
857 }
858 return FALSE;
859 }
860
861 /*========================= End of Function ========================*/
862
863 /*------------------------------------------------------------------*/
864 /* */
865 /* Name - mono_arch_get_allocatable_int_vars */
866 /* */
867 /* Function - */
868 /* */
869 /*------------------------------------------------------------------*/
870
871 GList *
872 mono_arch_get_allocatable_int_vars (MonoCompile *cfg)
873 {
874 GList *vars = NULL;
875 int i;
876
877 for (i = 0; i < cfg->num_varinfo; i++) {
878 MonoInst *ins = cfg->varinfo [i];
879 MonoMethodVar *vmv = MONO_VARINFO (cfg, i);
880
881 /* unused vars */
882 if (vmv->range.first_use.abs_pos > vmv->range.last_use.abs_pos)
883 continue;
884
885 if (ins->flags & (MONO_INST_VOLATILE|MONO_INST_INDIRECT) || (ins->opcode != OP_LOCAL && ins->opcode != OP_ARG))
886 continue;
887
888 /* we can only allocate 32 bit values */
889 if (is_regsize_var (ins->inst_vtype)) {
890 g_assert (MONO_VARINFO (cfg, i)->reg == -1);
891 g_assert (i == vmv->idx);
892 vars = mono_varlist_insert_sorted (cfg, vars, vmv, FALSE);
893 }
894 }
895
896 return vars;
897 }
898
899 /*========================= End of Function ========================*/
900
901 /*------------------------------------------------------------------*/
902 /* */
903 /* Name - mono_arch_global_int_regs */
904 /* */
905 /* Function - Return a list of usable integer registers. */
906 /* */
907 /*------------------------------------------------------------------*/
908
909 GList *
910 mono_arch_get_global_int_regs (MonoCompile *cfg)
911 {
912 GList *regs = NULL;
913 int i, top = 12;
914
915 for (i = 3; i < top; ++i)
916 regs = g_list_prepend (regs, GUINT_TO_POINTER (i));
917
918 return regs;
919 }
920
921 /*========================= End of Function ========================*/
922
923 /*------------------------------------------------------------------*/
924 /* */
925 /* Name - mono_arch_flush_icache */
926 /* */
927 /* Function - Flush the CPU icache. */
928 /* */
929 /*------------------------------------------------------------------*/
930
931 void
932 mono_arch_flush_icache (guint8 *code, gint size)
933 {
934 }
935
936 /*========================= End of Function ========================*/
937
938 /*------------------------------------------------------------------*/
939 /* */
940 /* Name - add_general */
941 /* */
942 /* Function - Determine code and stack size incremements for a */
943 /* parameter. */
944 /* */
945 /*------------------------------------------------------------------*/
946
947 static void inline
948 add_general (guint *gr, size_data *sz, ArgInfo *ainfo, gboolean simple)
949 {
950 if (simple) {
951 if (*gr > S390_LAST_ARG_REG) {
952 sz->stack_size = S390_ALIGN(sz->stack_size, sizeof(long));
953 ainfo->offset = sz->stack_size;
954 ainfo->reg = STK_BASE;
955 ainfo->regtype = RegTypeBase;
956 sz->stack_size += sizeof(int);
957 sz->code_size += 12;
958 } else {
959 ainfo->reg = *gr;
960 sz->code_size += 8;
961 }
962 } else {
963 if (*gr > S390_LAST_ARG_REG - 1) {
964 sz->stack_size = S390_ALIGN(sz->stack_size, S390_STACK_ALIGNMENT);
965 ainfo->offset = sz->stack_size;
966 ainfo->reg = STK_BASE;
967 ainfo->regtype = RegTypeBase;
968 sz->stack_size += sizeof(long long);
969 sz->code_size += 10;
970 } else {
971 ainfo->reg = *gr;
972 sz->code_size += 8;
973 }
974 (*gr) ++;
975 }
976 (*gr) ++;
977 }
978
979 /*========================= End of Function ========================*/
980
981 /*------------------------------------------------------------------*/
982 /* */
983 /* Name - calculate_sizes */
984 /* */
985 /* Function - Determine the amount of space required for code */
986 /* and stack. In addition determine starting points */
987 /* for stack-based parameters, and area for struct- */
988 /* ures being returned on the stack. */
989 /* */
990 /*------------------------------------------------------------------*/
991
992 static CallInfo *
993 calculate_sizes (MonoMethodSignature *sig, size_data *sz,
994 gboolean string_ctor)
995 {
996 guint i, fr, gr, size, nWords;
997 int nParm = sig->hasthis + sig->param_count;
998 guint32 simpletype, align;
999 CallInfo *cinfo = g_malloc0 (sizeof (CallInfo) + sizeof (ArgInfo) * nParm);
1000
1001 fr = 0;
1002 gr = s390_r2;
1003 cinfo->struct_ret = 0;
1004 sz->retStruct = 0;
1005 sz->stack_size = S390_MINIMAL_STACK_SIZE;
1006 sz->code_size = 0;
1007 sz->local_size = S390_MINIMAL_STACK_SIZE;
1008
1009 nParm = 0;
1010 /*----------------------------------------------------------*/
1011 /* We determine the size of the return code/stack in case we*/
1012 /* need to reserve a register to be used to address a stack */
1013 /* area that the callee will use. */
1014 /*----------------------------------------------------------*/
1015
1016 if (sig->ret->byref || string_ctor) {
1017 sz->code_size += 8;
1018 } else {
1019 simpletype = sig->ret->type;
1020 enum_retvalue:
1021 switch (simpletype) {
1022 case MONO_TYPE_BOOLEAN:
1023 case MONO_TYPE_I1:
1024 case MONO_TYPE_U1:
1025 case MONO_TYPE_I2:
1026 case MONO_TYPE_U2:
1027 case MONO_TYPE_CHAR:
1028 case MONO_TYPE_I4:
1029 case MONO_TYPE_U4:
1030 case MONO_TYPE_I:
1031 case MONO_TYPE_U:
1032 case MONO_TYPE_CLASS:
1033 case MONO_TYPE_OBJECT:
1034 case MONO_TYPE_SZARRAY:
1035 case MONO_TYPE_ARRAY:
1036 case MONO_TYPE_PTR:
1037 case MONO_TYPE_STRING:
1038 cinfo->ret.reg = s390_r2;
1039 sz->code_size += 4;
1040 break;
1041 case MONO_TYPE_R4:
1042 case MONO_TYPE_R8:
1043 cinfo->ret.reg = s390_f0;
1044 sz->code_size += 4;
1045 break;
1046 case MONO_TYPE_I8:
1047 case MONO_TYPE_U8:
1048 cinfo->ret.reg = s390_r2;
1049 sz->code_size += 4;
1050 break;
1051 case MONO_TYPE_VALUETYPE:
1052 if (sig->ret->data.klass->enumtype) {
1053 simpletype = sig->ret->data.klass->enum_basetype->type;
1054 goto enum_retvalue;
1055 }
1056 if (sig->pinvoke)
1057 size = mono_class_native_size (sig->ret->data.klass, &align);
1058 else
1059 size = mono_class_value_size (sig->ret->data.klass, &align);
1060 cinfo->ret.reg = s390_r2;
1061 cinfo->struct_ret = 1;
1062 cinfo->ret.size = size;
1063 cinfo->ret.vtsize = size;
1064 cinfo->ret.offset = sz->stack_size;
1065 sz->stack_size += S390_ALIGN(size, align);
1066 gr++;
1067 break;
1068 case MONO_TYPE_VOID:
1069 break;
1070 default:
1071 g_error ("Can't handle as return value 0x%x", sig->ret->type);
1072 }
1073 }
1074
1075 if (sig->hasthis) {
1076 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1077 cinfo->args[nParm].size = sizeof(gpointer);
1078 nParm++;
1079 }
1080
1081 /*----------------------------------------------------------*/
1082 /* We determine the size of the parameter code and stack */
1083 /* requirements by checking the types and sizes of the */
1084 /* parameters. */
1085 /*----------------------------------------------------------*/
1086
1087 for (i = 0; i < sig->param_count; ++i) {
1088 if (sig->params [i]->byref) {
1089 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1090 cinfo->args[nParm].size = sizeof(gpointer);
1091 nParm++;
1092 continue;
1093 }
1094 simpletype = sig->params [i]->type;
1095 enum_calc_size:
1096 switch (simpletype) {
1097 case MONO_TYPE_BOOLEAN:
1098 case MONO_TYPE_I1:
1099 case MONO_TYPE_U1:
1100 cinfo->args[nParm].size = sizeof(char);
1101 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1102 nParm++;
1103 break;
1104 case MONO_TYPE_I2:
1105 case MONO_TYPE_U2:
1106 case MONO_TYPE_CHAR:
1107 cinfo->args[nParm].size = sizeof(short);
1108 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1109 nParm++;
1110 break;
1111 case MONO_TYPE_I4:
1112 case MONO_TYPE_U4:
1113 cinfo->args[nParm].size = sizeof(int);
1114 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1115 nParm++;
1116 break;
1117 case MONO_TYPE_I:
1118 case MONO_TYPE_U:
1119 case MONO_TYPE_PTR:
1120 case MONO_TYPE_CLASS:
1121 case MONO_TYPE_OBJECT:
1122 case MONO_TYPE_STRING:
1123 case MONO_TYPE_SZARRAY:
1124 case MONO_TYPE_ARRAY:
1125 cinfo->args[nParm].size = sizeof(gpointer);
1126 add_general (&gr, sz, cinfo->args+nParm, TRUE);
1127 nParm++;
1128 break;
1129 case MONO_TYPE_VALUETYPE:
1130 if (sig->params [i]->data.klass->enumtype) {
1131 simpletype = sig->params [i]->data.klass->enum_basetype->type;
1132 goto enum_calc_size;
1133 }
1134 if (sig->pinvoke)
1135 size = mono_class_native_size (sig->params [i]->data.klass, &align);
1136 else
1137 size = mono_class_value_size (sig->params [i]->data.klass, &align);
1138 nWords = (size + sizeof(gpointer) - 1) /
1139 sizeof(gpointer);
1140
1141 cinfo->args[nParm].vtsize = 0;
1142 cinfo->args[nParm].size = 0;
1143 cinfo->args[nParm].offparm = sz->local_size;
1144
1145 switch (size) {
1146 /*----------------------------------*/
1147 /* On S/390, structures of size 1, */
1148 /* 2, 4, and 8 bytes are passed in */
1149 /* (a) register(s). */
1150 /*----------------------------------*/
1151 case 0:
1152 case 1:
1153 case 2:
1154 case 4:
1155 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1156 cinfo->args[nParm].size = sizeof(int);
1157 cinfo->args[nParm].regtype = RegTypeStructByVal;
1158 nParm++;
1159 break;
1160 case 8:
1161 add_general(&gr, sz, cinfo->args+nParm, FALSE);
1162 cinfo->args[nParm].size = sizeof(long long);
1163 cinfo->args[nParm].regtype = RegTypeStructByVal;
1164 nParm++;
1165 break;
1166 default:
1167 add_general(&gr, sz, cinfo->args+nParm, TRUE);
1168 cinfo->args[nParm].size = sizeof(int);
1169 cinfo->args[nParm].regtype = RegTypeStructByVal;
1170 cinfo->args[nParm].vtsize = size;
1171 sz->code_size += 40;
1172 nParm++;
1173 }
1174 sz->local_size += sizeof(long);
1175 break;
1176 case MONO_TYPE_I8:
1177 case MONO_TYPE_U8:
1178 cinfo->args[nParm].size = sizeof(long long);
1179 add_general (&gr, sz, cinfo->args+nParm, FALSE);
1180 nParm++;
1181 break;
1182 case MONO_TYPE_R4:
1183 cinfo->args[nParm].size = sizeof(float);
1184 if (fr <= S390_LAST_FPARG_REG) {
1185 cinfo->args[nParm].regtype = RegTypeFP;
1186 cinfo->args[nParm].reg = fr;
1187 sz->code_size += 4;
1188 fr += 2;
1189 }
1190 else {
1191 cinfo->args[nParm].offset = sz->stack_size;
1192 cinfo->args[nParm].reg = STK_BASE;
1193 cinfo->args[nParm].regtype = RegTypeBase;
1194 sz->code_size += 4;
1195 sz->stack_size += 4;
1196 }
1197 nParm++;
1198 break;
1199 case MONO_TYPE_R8:
1200 cinfo->args[nParm].size = sizeof(double);
1201 if (fr <= S390_LAST_FPARG_REG) {
1202 cinfo->args[nParm].regtype = RegTypeFP;
1203 cinfo->args[nParm].reg = fr;
1204 sz->code_size += 4;
1205 fr += 2;
1206 } else {
1207 sz->stack_size = S390_ALIGN(sz->stack_size,
1208 S390_STACK_ALIGNMENT);
1209 cinfo->args[nParm].offset = sz->stack_size;
1210 cinfo->args[nParm].reg = STK_BASE;
1211 cinfo->args[nParm].regtype = RegTypeBase;
1212 sz->code_size += 4;
1213 sz->stack_size += 8;
1214 }
1215 nParm++;
1216 break;
1217 default:
1218 g_error ("Can't trampoline 0x%x", sig->params [i]->type);
1219 }
1220 }
1221
1222
1223 /* align stack size */
1224 sz->stack_size = S390_ALIGN(sz->stack_size, S390_STACK_ALIGNMENT);
1225 cinfo->stack_usage = sz->stack_size;
1226 return (cinfo);
1227 }
1228
1229 /*========================= End of Function ========================*/
1230
1231 /*------------------------------------------------------------------*/
1232 /* */
1233 /* Name - mono_arch_allocate_vars */
1234 /* */
1235 /* Function - Set var information according to the calling */
1236 /* convention for S/390. The local var stuff should */
1237 /* most likely be split in another method. */
1238 /* */
1239 /* Parameter - @m - Compile unit. */
1240 /* */
1241 /*------------------------------------------------------------------*/
1242
1243 void
1244 mono_arch_allocate_vars (MonoCompile *m)
1245 {
1246 MonoMethodSignature *sig;
1247 MonoMethodHeader *header;
1248 MonoInst *inst;
1249 CallInfo *cinfo;
1250 size_data sz;
1251 int iParm, iVar, offset, size, align, curinst;
1252 int frame_reg = STK_BASE;
1253 int sArg, eArg;
1254
1255 header = ((MonoMethodNormal *)m->method)->header;
1256
1257 /*
1258 * We use the frame register also for any method that has
1259 * filter clauses. This way, when the handlers are called,
1260 * the code will reference local variables using the frame reg instead of
1261 * the stack pointer: if we had to restore the stack pointer, we'd
1262 * corrupt the method frames that are already on the stack (since
1263 * filters get called before stack unwinding happens) when the filter
1264 * code would call any method.
1265 */
1266 // if ((m->flags & MONO_CFG_HAS_ALLOCA) || header->num_clauses)
1267 if (m->flags & MONO_CFG_HAS_ALLOCA)
1268 frame_reg = s390_r11;
1269
1270 m->frame_reg = frame_reg;
1271
1272 if (frame_reg != STK_BASE)
1273 m->used_int_regs |= 1 << frame_reg;
1274
1275 sig = m->method->signature;
1276
1277 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1278
1279 if (cinfo->struct_ret) {
1280 m->ret->opcode = OP_REGVAR;
1281 m->ret->inst_c0 = s390_r2;
1282 } else {
1283 /* FIXME: handle long and FP values */
1284 switch (sig->ret->type) {
1285 case MONO_TYPE_VOID:
1286 break;
1287 default:
1288 m->ret->opcode = OP_REGVAR;
1289 m->ret->dreg = s390_r2;
1290 break;
1291 }
1292 }
1293
1294 /*--------------------------------------------------------------*/
1295 /* local vars are at a positive offset from the stack pointer */
1296 /* */
1297 /* also note that if the function uses alloca, we use s390_r11 */
1298 /* to point at the local variables. */
1299 /* add parameter area size for called functions */
1300 /*--------------------------------------------------------------*/
1301 offset = (m->param_area + S390_MINIMAL_STACK_SIZE);
1302
1303 if (cinfo->struct_ret) {
1304 inst = m->ret;
1305 offset = S390_ALIGN(offset, sizeof(gpointer));
1306 inst->inst_offset = offset;
1307 inst->opcode = OP_REGOFFSET;
1308 inst->inst_basereg = frame_reg;
1309 offset += sizeof(gpointer);
1310 }
1311
1312 if (sig->hasthis) {
1313 inst = m->varinfo [0];
1314 if (inst->opcode != OP_REGVAR) {
1315 inst->opcode = OP_REGOFFSET;
1316 inst->inst_basereg = frame_reg;
1317 offset = S390_ALIGN(offset, sizeof(gpointer));
1318 inst->inst_offset = offset;
1319 offset += sizeof (gpointer);
1320 }
1321 curinst = sArg = 1;
1322 } else {
1323 curinst = sArg = 0;
1324 }
1325
1326 eArg = sig->param_count + sArg;
1327
1328 for (iParm = sArg; iParm < eArg; ++iParm) {
1329 inst = m->varinfo [curinst];
1330 if (inst->opcode != OP_REGVAR) {
1331 if (cinfo->args[iParm].regtype == RegTypeStructByVal) {
1332 if (cinfo->args[iParm].vtsize != 0) {
1333 inst->opcode = OP_S390_LOADARG;
1334 inst->inst_basereg = frame_reg;
1335 size = sizeof(long);
1336 offset = S390_ALIGN(offset, size);
1337 inst->inst_offset = offset;
1338 } else {
1339 inst->opcode = OP_S390_ARGPTR;
1340 inst->inst_basereg = frame_reg;
1341 size = cinfo->args[iParm].size;
1342 offset = S390_ALIGN(offset, size);
1343 inst->inst_offset = offset;
1344 }
1345 } else {
1346 if (cinfo->args[iParm].reg != STK_BASE) {
1347 inst->opcode = OP_REGOFFSET;
1348 inst->inst_basereg = frame_reg;
1349 size = (cinfo->args[iParm].size < 8
1350 ? sizeof(long)
1351 : sizeof(long long));
1352 offset = S390_ALIGN(offset, size);
1353 inst->inst_offset = offset;
1354 } else {
1355 inst->opcode = OP_S390_STKARG;
1356 inst->inst_basereg = frame_reg;
1357 size = (cinfo->args[iParm].size < 4
1358 ? 4 - cinfo->args[iParm].size
1359 : 0);
1360 inst->inst_offset = cinfo->args[iParm].offset +
1361 size;
1362 // inst->unused = stackOffset;
1363 inst->unused = 0;
1364 size = sizeof(long);
1365 }
1366 }
1367 offset += size;
1368 }
1369 curinst++;
1370 }
1371
1372 curinst = m->locals_start;
1373 for (iVar = curinst; iVar < m->num_varinfo; ++iVar) {
1374 inst = m->varinfo [iVar];
1375 if (inst->opcode == OP_REGVAR)
1376 continue;
1377
1378 /* inst->unused indicates native sized value types, this is used by the
1379 * pinvoke wrappers when they call functions returning structure */
1380 if (inst->unused && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1381 size = mono_class_native_size (inst->inst_vtype->data.klass, &align);
1382 else
1383 size = mono_type_size (inst->inst_vtype, &align);
1384
1385 offset = S390_ALIGN(offset, align);
1386 inst->inst_offset = offset;
1387 inst->opcode = OP_REGOFFSET;
1388 inst->inst_basereg = frame_reg;
1389 offset += size;
1390 //DEBUG (g_print("allocating local %d to %d\n", iVar, inst->inst_offset));
1391 }
1392
1393 // if (sig->hasthis)
1394 // curinst = sArg = 1;
1395 // else
1396 // curinst = sArg = 0;
1397 //
1398
1399 /*------------------------------------------------------*/
1400 /* Allow space for the trace method stack area if needed*/
1401 /*------------------------------------------------------*/
1402 if (mono_jit_trace_calls != NULL && mono_trace_eval (m))
1403 offset += S390_TRACE_STACK_SIZE;
1404
1405 /*------------------------------------------------------*/
1406 /* Reserve space to save LMF and caller saved registers */
1407 /*------------------------------------------------------*/
1408 if (m->method->save_lmf)
1409 offset += sizeof (MonoLMF);
1410
1411 /*------------------------------------------------------*/
1412 /* align the offset */
1413 /*------------------------------------------------------*/
1414 m->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1415
1416 }
1417
1418 /*========================= End of Function ========================*/
1419
1420 /*------------------------------------------------------------------*/
1421 /* */
1422 /* Name - mono_arch_call_opcode */
1423 /* */
1424 /* Function - Take the arguments and generate the arch-specific */
1425 /* instructions to properly call the function. This */
1426 /* includes pushing, moving argments to the correct */
1427 /* etc. */
1428 /* */
1429 /* Note - FIXME: We need an alignment solution for */
1430 /* enter_method and mono_arch_call_opcode, currently */
1431 /* alignment in mono_arch_call_opcode is computed */
1432 /* without arch_get_argument_info. */
1433 /* */
1434 /*------------------------------------------------------------------*/
1435
1436 MonoCallInst*
1437 mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb, MonoCallInst *call, int is_virtual) {
1438 MonoInst *arg, *in;
1439 MonoMethodSignature *sig;
1440 int i, n, lParamArea;
1441 CallInfo *cinfo;
1442 ArgInfo *ainfo;
1443 size_data sz;
1444
1445 sig = call->signature;
1446 n = sig->param_count + sig->hasthis;
1447 DEBUG (g_print ("Call requires: %d parameters\n",n));
1448
1449 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1450 if (cinfo->struct_ret)
1451 call->used_iregs |= 1 << cinfo->struct_ret;
1452
1453 for (i = 0; i < n; ++i) {
1454 ainfo = cinfo->args + i;
1455 DEBUG (g_print ("Parameter %d - Register: %d Type: %d\n",
1456 i+1,ainfo->reg,ainfo->regtype));
1457 if (is_virtual && i == 0) {
1458 /* the argument will be attached to the call instrucion */
1459 in = call->args [i];
1460 call->used_iregs |= 1 << ainfo->reg;
1461 } else {
1462 MONO_INST_NEW (cfg, arg, OP_OUTARG);
1463 in = call->args [i];
1464 arg->cil_code = in->cil_code;
1465 arg->inst_left = in;
1466 arg->type = in->type;
1467 /* prepend, we'll need to reverse them later */
1468 arg->next = call->out_args;
1469 call->out_args = arg;
1470 if (ainfo->regtype == RegTypeGeneral) {
1471 arg->unused = ainfo->reg;
1472 call->used_iregs |= 1 << ainfo->reg;
1473 if (arg->type == STACK_I8)
1474 call->used_iregs |= 1 << (ainfo->reg + 1);
1475 } else if (ainfo->regtype == RegTypeStructByAddr) {
1476 arg->unused = ainfo->reg;
1477 call->used_iregs |= 1 << ainfo->reg;
1478 } else if (ainfo->regtype == RegTypeStructByVal) {
1479 if (ainfo->reg != STK_BASE) {
1480 switch (ainfo->size) {
1481 case 0:
1482 case 1:
1483 case 2:
1484 case 4:
1485 call->used_iregs |= 1 << ainfo->reg;
1486 break;
1487 case 8:
1488 call->used_iregs |= 1 << ainfo->reg;
1489 call->used_iregs |= 1 << (ainfo->reg+1);
1490 break;
1491 }
1492 }
1493 arg->sreg1 = ainfo->reg;
1494 arg->opcode = OP_OUTARG_VT;
1495 if (ainfo->vtsize != 0)
1496 arg->unused = -ainfo->vtsize;
1497 else
1498 arg->unused = ainfo->size;
1499 arg->inst_imm = ainfo->offset;
1500 arg->sreg2 = ainfo->offparm;
1501 } else if (ainfo->regtype == RegTypeBase) {
1502 arg->opcode = OP_OUTARG;
1503 arg->unused = ainfo->reg | (ainfo->size << 8);
1504 arg->inst_imm = ainfo->offset;
1505 } else if (ainfo->regtype == RegTypeFP) {
1506 arg->opcode = OP_OUTARG_R8;
1507 arg->unused = ainfo->reg;
1508 call->used_fregs |= 1 << ainfo->reg;
1509 if (ainfo->size == 4) {
1510 /* we reduce the precision */
1511 MonoInst *conv;
1512 MONO_INST_NEW (cfg, conv, OP_FCONV_TO_R4);
1513 conv->inst_left = arg->inst_left;
1514 arg->inst_left = conv;
1515 }
1516 } else {
1517 g_assert_not_reached ();
1518 }
1519 }
1520 }
1521 /*
1522 * Reverse the call->out_args list.
1523 */
1524 {
1525 MonoInst *prev = NULL, *list = call->out_args, *next;
1526 while (list) {
1527 next = list->next;
1528 list->next = prev;
1529 prev = list;
1530 list = next;
1531 }
1532 call->out_args = prev;
1533 }
1534 call->stack_usage = cinfo->stack_usage;
1535
1536 lParamArea = cinfo->stack_usage - S390_MINIMAL_STACK_SIZE;
1537 cfg->param_area = MAX (cfg->param_area, lParamArea);
1538 cfg->flags |= MONO_CFG_HAS_CALLS;
1539 /*----------------------------------------------------------*/
1540 /* should set more info in call, such as the stack space */
1541 /* used by the args that needs to be added back to esp */
1542 /*----------------------------------------------------------*/
1543
1544 g_free (cinfo);
1545 return call;
1546 }
1547
1548 /*========================= End of Function ========================*/
1549
1550 /*------------------------------------------------------------------*/
1551 /* */
1552 /* Name - mono_arch_instrument_mem_needs */
1553 /* */
1554 /* Function - Allow tracing to work with this interface (with */
1555 /* an optional argument). */
1556 /* */
1557 /*------------------------------------------------------------------*/
1558
1559 void
1560 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
1561 {
1562 /* no stack room needed now (may be needed for FASTCALL-trace support) */
1563 *stack = 0;
1564 /* split prolog-epilog requirements? */
1565 *code = 50; /* max bytes needed: check this number */
1566 }
1567
1568 /*========================= End of Function ========================*/
1569
1570 /*------------------------------------------------------------------*/
1571 /* */
1572 /* Name - mono_arch_instrument_prolog */
1573 /* */
1574 /* Function - Create an "instrumented" prolog. */
1575 /* */
1576 /*------------------------------------------------------------------*/
1577
1578 void*
1579 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
1580 gboolean enable_arguments)
1581 {
1582 guchar *code = p;
1583 int parmOffset,
1584 fpOffset;
1585
1586 parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1587 if (cfg->method->save_lmf)
1588 parmOffset -= sizeof(MonoLMF);
1589 fpOffset = parmOffset + (5*sizeof(gint32));
1590
1591 s390_stm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1592 s390_std (code, s390_f0, 0, STK_BASE, fpOffset);
1593 s390_std (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1594 s390_std (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1595 s390_basr (code, s390_r13, 0);
1596 s390_j (code, 6);
1597 s390_word (code, cfg->method);
1598 s390_word (code, func);
1599 s390_l (code, s390_r2, 0, s390_r13, 4);
1600 s390_la (code, s390_r3, 0, STK_BASE, parmOffset);
1601 s390_lr (code, s390_r4, STK_BASE);
1602 s390_ahi (code, s390_r4, cfg->stack_usage);
1603 s390_l (code, s390_r1, 0, s390_r13, 8);
1604 s390_basr (code, s390_r14, s390_r1);
1605 s390_ld (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1606 s390_ld (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1607 s390_ld (code, s390_f0, 0, STK_BASE, fpOffset);
1608 s390_lm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1609
1610 return code;
1611 }
1612
1613 /*========================= End of Function ========================*/
1614
1615 /*------------------------------------------------------------------*/
1616 /* */
1617 /* Name - mono_arch_instrument_epilog */
1618 /* */
1619 /* Function - Create an epilog that will handle the returned */
1620 /* values used in instrumentation. */
1621 /* */
1622 /*------------------------------------------------------------------*/
1623
1624 void*
1625 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
1626 {
1627 guchar *code = p;
1628 int save_mode = SAVE_NONE,
1629 saveOffset;
1630 MonoMethod *method = cfg->method;
1631 int rtype = method->signature->ret->type;
1632
1633 saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1634 if (method->save_lmf)
1635 saveOffset -= sizeof(MonoLMF);
1636
1637 handle_enum:
1638 switch (rtype) {
1639 case MONO_TYPE_VOID:
1640 /* special case string .ctor icall */
1641 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
1642 save_mode = SAVE_ONE;
1643 else
1644 save_mode = SAVE_NONE;
1645 break;
1646 case MONO_TYPE_I8:
1647 case MONO_TYPE_U8:
1648 save_mode = SAVE_TWO;
1649 break;
1650 case MONO_TYPE_R4:
1651 case MONO_TYPE_R8:
1652 save_mode = SAVE_FP;
1653 break;
1654 case MONO_TYPE_VALUETYPE:
1655 if (method->signature->ret->data.klass->enumtype) {
1656 rtype = method->signature->ret->data.klass->enum_basetype->type;
1657 goto handle_enum;
1658 }
1659 save_mode = SAVE_STRUCT;
1660 break;
1661 default:
1662 save_mode = SAVE_ONE;
1663 break;
1664 }
1665
1666 switch (save_mode) {
1667 case SAVE_TWO:
1668 s390_stm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1669 if (enable_arguments) {
1670 s390_lr (code, s390_r4, s390_r3);
1671 s390_lr (code, s390_r3, s390_r2);
1672 }
1673 break;
1674 case SAVE_ONE:
1675 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1676 if (enable_arguments) {
1677 s390_lr (code, s390_r3, s390_r2);
1678 }
1679 break;
1680 case SAVE_FP:
1681 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1682 if (enable_arguments) {
1683 /* FIXME: what reg? */
1684 s390_ldr (code, s390_f2, s390_f0);
1685 s390_lm (code, s390_r3, s390_r4, cfg->frame_reg, saveOffset);
1686 }
1687 break;
1688 case SAVE_STRUCT:
1689 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1690 if (enable_arguments) {
1691 s390_l (code, s390_r3, 0, cfg->frame_reg,
1692 S390_MINIMAL_STACK_SIZE+cfg->param_area);
1693 }
1694 break;
1695 case SAVE_NONE:
1696 default:
1697 break;
1698 }
1699
1700 s390_basr (code, s390_r13, 0);
1701 s390_j (code, 6);
1702 s390_word (code, cfg->method);
1703 s390_word (code, func);
1704 s390_l (code, s390_r2, 0, s390_r13, 4);
1705 s390_l (code, s390_r1, 0, s390_r13, 8);
1706 s390_basr (code, s390_r14, s390_r1);
1707
1708 switch (save_mode) {
1709 case SAVE_TWO:
1710 s390_lm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1711 break;
1712 case SAVE_ONE:
1713 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1714 break;
1715 case SAVE_FP:
1716 s390_ld (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1717 break;
1718 case SAVE_STRUCT:
1719 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1720 break;
1721 case SAVE_NONE:
1722 default:
1723 break;
1724 }
1725
1726 return code;
1727 }
1728
1729 /*========================= End of Function ========================*/
1730
1731 /*------------------------------------------------------------------*/
1732 /* */
1733 /* Name - peephole_pass */
1734 /* */
1735 /* Function - Form a peephole pass at the code looking for */
1736 /* simple optimizations. */
1737 /* */
1738 /*------------------------------------------------------------------*/
1739
1740 static void
1741 peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
1742 {
1743 MonoInst *ins, *last_ins = NULL;
1744 ins = bb->code;
1745
1746 while (ins) {
1747
1748 switch (ins->opcode) {
1749 case OP_MUL_IMM:
1750 /* remove unnecessary multiplication with 1 */
1751 if (ins->inst_imm == 1) {
1752 if (ins->dreg != ins->sreg1) {
1753 ins->opcode = OP_MOVE;
1754 } else {
1755 last_ins->next = ins->next;
1756 ins = ins->next;
1757 continue;
1758 }
1759 }
1760 break;
1761 case OP_LOAD_MEMBASE:
1762 case OP_LOADI4_MEMBASE:
1763 /*
1764 * OP_STORE_MEMBASE_REG reg, offset(basereg)
1765 * OP_LOAD_MEMBASE offset(basereg), reg
1766 */
1767 if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG
1768 || last_ins->opcode == OP_STORE_MEMBASE_REG) &&
1769 ins->inst_basereg == last_ins->inst_destbasereg &&
1770 ins->inst_offset == last_ins->inst_offset) {
1771 if (ins->dreg == last_ins->sreg1) {
1772 last_ins->next = ins->next;
1773 ins = ins->next;
1774 continue;
1775 } else {
1776 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1777 ins->opcode = OP_MOVE;
1778 ins->sreg1 = last_ins->sreg1;
1779 }
1780
1781 /*
1782 * Note: reg1 must be different from the basereg in the second load
1783 * OP_LOAD_MEMBASE offset(basereg), reg1
1784 * OP_LOAD_MEMBASE offset(basereg), reg2
1785 * -->
1786 * OP_LOAD_MEMBASE offset(basereg), reg1
1787 * OP_MOVE reg1, reg2
1788 */
1789 } if (last_ins && (last_ins->opcode == OP_LOADI4_MEMBASE
1790 || last_ins->opcode == OP_LOAD_MEMBASE) &&
1791 ins->inst_basereg != last_ins->dreg &&
1792 ins->inst_basereg == last_ins->inst_basereg &&
1793 ins->inst_offset == last_ins->inst_offset) {
1794
1795 if (ins->dreg == last_ins->dreg) {
1796 last_ins->next = ins->next;
1797 ins = ins->next;
1798 continue;
1799 } else {
1800 ins->opcode = OP_MOVE;
1801 ins->sreg1 = last_ins->dreg;
1802 }
1803
1804 //g_assert_not_reached ();
1805
1806 #if 0
1807 /*
1808 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
1809 * OP_LOAD_MEMBASE offset(basereg), reg
1810 * -->
1811 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
1812 * OP_ICONST reg, imm
1813 */
1814 } else if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_IMM
1815 || last_ins->opcode == OP_STORE_MEMBASE_IMM) &&
1816 ins->inst_basereg == last_ins->inst_destbasereg &&
1817 ins->inst_offset == last_ins->inst_offset) {
1818 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1819 ins->opcode = OP_ICONST;
1820 ins->inst_c0 = last_ins->inst_imm;
1821 g_assert_not_reached (); // check this rule
1822 #endif
1823 }
1824 break;
1825 case OP_LOADU1_MEMBASE:
1826 case OP_LOADI1_MEMBASE:
1827 if (last_ins && (last_ins->opcode == OP_STOREI1_MEMBASE_REG) &&
1828 ins->inst_basereg == last_ins->inst_destbasereg &&
1829 ins->inst_offset == last_ins->inst_offset) {
1830 if (ins->dreg == last_ins->sreg1) {
1831 last_ins->next = ins->next;
1832 ins = ins->next;
1833 continue;
1834 } else {
1835 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1836 ins->opcode = OP_MOVE;
1837 ins->sreg1 = last_ins->sreg1;
1838 }
1839 }
1840 break;
1841 case OP_LOADU2_MEMBASE:
1842 case OP_LOADI2_MEMBASE:
1843 if (last_ins && (last_ins->opcode == OP_STOREI2_MEMBASE_REG) &&
1844 ins->inst_basereg == last_ins->inst_destbasereg &&
1845 ins->inst_offset == last_ins->inst_offset) {
1846 if (ins->dreg == last_ins->sreg1) {
1847 last_ins->next = ins->next;
1848 ins = ins->next;
1849 continue;
1850 } else {
1851 ins->opcode = OP_MOVE;
1852 ins->sreg1 = last_ins->sreg1;
1853 }
1854 }
1855 break;
1856 case CEE_CONV_I4:
1857 case CEE_CONV_U4:
1858 case OP_MOVE:
1859 /*
1860 * OP_MOVE reg, reg
1861 */
1862 if (ins->dreg == ins->sreg1) {
1863 if (last_ins)
1864 last_ins->next = ins->next;
1865 ins = ins->next;
1866 continue;
1867 }
1868 /*
1869 * OP_MOVE sreg, dreg
1870 * OP_MOVE dreg, sreg
1871 */
1872 if (last_ins && last_ins->opcode == OP_MOVE &&
1873 ins->sreg1 == last_ins->dreg &&
1874 ins->dreg == last_ins->sreg1) {
1875 last_ins->next = ins->next;
1876 ins = ins->next;
1877 continue;
1878 }
1879 break;
1880 }
1881 last_ins = ins;
1882 ins = ins->next;
1883 }
1884 bb->last_ins = last_ins;
1885 }
1886
1887 /*========================= End of Function ========================*/
1888
1889 /*------------------------------------------------------------------*/
1890 /* */
1891 /* Name - mono_spillvar_offset */
1892 /* */
1893 /* Function - Returns the offset used by spillvar. It allocates */
1894 /* a new spill variable if necessary. */
1895 /* */
1896 /*------------------------------------------------------------------*/
1897
1898 static int
1899 mono_spillvar_offset (MonoCompile *cfg, int spillvar)
1900 {
1901 MonoSpillInfo **si, *info;
1902 int i = 0;
1903
1904 si = &cfg->spill_info;
1905
1906 while (i <= spillvar) {
1907
1908 if (!*si) {
1909 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
1910 info->next = NULL;
1911 info->offset = cfg->stack_offset;
1912 cfg->stack_offset += sizeof (gpointer);
1913 }
1914
1915 if (i == spillvar)
1916 return (*si)->offset;
1917
1918 i++;
1919 si = &(*si)->next;
1920 }
1921
1922 g_assert_not_reached ();
1923 return 0;
1924 }
1925
1926 /*========================= End of Function ========================*/
1927
1928 /*------------------------------------------------------------------*/
1929 /* */
1930 /* Name - mono_spillvar_offset_float */
1931 /* */
1932 /* Function - */
1933 /* */
1934 /*------------------------------------------------------------------*/
1935
1936 static int
1937 mono_spillvar_offset_float (MonoCompile *cfg, int spillvar)
1938 {
1939 MonoSpillInfo **si, *info;
1940 int i = 0;
1941
1942 si = &cfg->spill_info_float;
1943
1944 while (i <= spillvar) {
1945
1946 if (!*si) {
1947 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
1948 info->next = NULL;
1949 cfg->stack_offset = S390_ALIGN(cfg->stack_offset, S390_STACK_ALIGNMENT);
1950 info->offset = cfg->stack_offset;
1951 cfg->stack_offset += sizeof (double);
1952 }
1953
1954 if (i == spillvar)
1955 return (*si)->offset;
1956
1957 i++;
1958 si = &(*si)->next;
1959 }
1960
1961 g_assert_not_reached ();
1962 return 0;
1963 }
1964
1965 /*========================= End of Function ========================*/
1966
1967 /*------------------------------------------------------------------*/
1968 /* */
1969 /* Name - print_ins */
1970 /* */
1971 /* Function - Decode and print the instruction for tracing. */
1972 /* */
1973 /*------------------------------------------------------------------*/
1974
1975 static void
1976 print_ins (int i, MonoInst *ins)
1977 {
1978 const char *spec = ins_spec [ins->opcode];
1979 g_print ("\t%-2d %s", i, mono_inst_name (ins->opcode));
1980 if (spec [MONO_INST_DEST]) {
1981 if (ins->dreg >= MONO_MAX_IREGS)
1982 g_print (" R%d <-", ins->dreg);
1983 else
1984 g_print (" %s <-", mono_arch_regname (ins->dreg));
1985 }
1986 if (spec [MONO_INST_SRC1]) {
1987 if (ins->sreg1 >= MONO_MAX_IREGS)
1988 g_print (" R%d", ins->sreg1);
1989 else
1990 g_print (" %s", mono_arch_regname (ins->sreg1));
1991 }
1992 if (spec [MONO_INST_SRC2]) {
1993 if (ins->sreg2 >= MONO_MAX_IREGS)
1994 g_print (" R%d", ins->sreg2);
1995 else
1996 g_print (" %s", mono_arch_regname (ins->sreg2));
1997 }
1998 if (spec [MONO_INST_CLOB])
1999 g_print (" clobbers: %c", spec [MONO_INST_CLOB]);
2000 g_print ("\n");
2001 }
2002
2003 /*========================= End of Function ========================*/
2004
2005 /*------------------------------------------------------------------*/
2006 /* */
2007 /* Name - print_regtrack. */
2008 /* */
2009 /* Function - */
2010 /* */
2011 /*------------------------------------------------------------------*/
2012
2013 static void
2014 print_regtrack (RegTrack *t, int num)
2015 {
2016 int i;
2017 char buf [32];
2018 const char *r;
2019
2020 for (i = 0; i < num; ++i) {
2021 if (!t [i].born_in)
2022 continue;
2023 if (i >= MONO_MAX_IREGS) {
2024 g_snprintf (buf, sizeof(buf), "R%d", i);
2025 r = buf;
2026 } else
2027 r = mono_arch_regname (i);
2028 g_print ("liveness: %s [%d - %d]\n", r, t [i].born_in, t[i].last_use);
2029 }
2030 }
2031
2032 /*========================= End of Function ========================*/
2033
2034 /*------------------------------------------------------------------*/
2035 /* */
2036 /* Name - inst_list_prepend */
2037 /* */
2038 /* Function - Prepend an instruction to the list. */
2039 /* */
2040 /*------------------------------------------------------------------*/
2041
2042 static inline InstList*
2043 inst_list_prepend (MonoMemPool *pool, InstList *list, MonoInst *data)
2044 {
2045 InstList *item = mono_mempool_alloc (pool, sizeof (InstList));
2046 item->data = data;
2047 item->prev = NULL;
2048 item->next = list;
2049 if (list)
2050 list->prev = item;
2051 return item;
2052 }
2053
2054 /*========================= End of Function ========================*/
2055
2056 /*------------------------------------------------------------------*/
2057 /* */
2058 /* Name - get_register_force_spilling */
2059 /* */
2060 /* Function - Force the spilling of the variable in the */
2061 /* symbolic register 'reg'. */
2062 /* */
2063 /*------------------------------------------------------------------*/
2064
2065 static int
2066 get_register_force_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, int reg)
2067 {
2068 MonoInst *load;
2069 int i, sel, spill;
2070
2071 sel = cfg->rs->iassign [reg];
2072 i = reg;
2073 spill = ++cfg->spill_count;
2074 cfg->rs->iassign [i] = -spill - 1;
2075 mono_regstate_free_int (cfg->rs, sel);
2076 /*----------------------------------------------------------*/
2077 /* we need to create a spill var and insert a load to sel */
2078 /* after the current instruction */
2079 /*----------------------------------------------------------*/
2080 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2081 load->dreg = sel;
2082 load->inst_basereg = cfg->frame_reg;
2083 load->inst_offset = mono_spillvar_offset (cfg, spill);
2084 if (item->prev) {
2085 while (ins->next != item->prev->data)
2086 ins = ins->next;
2087 }
2088 load->next = ins->next;
2089 ins->next = load;
2090 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n",
2091 spill, load->inst_offset, i, mono_arch_regname (sel)));
2092 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2093 g_assert (i == sel);
2094
2095 return sel;
2096 }
2097
2098 /*========================= End of Function ========================*/
2099
2100 /*------------------------------------------------------------------*/
2101 /* */
2102 /* Name - get_register_spilling */
2103 /* */
2104 /* Function - */
2105 /* */
2106 /*------------------------------------------------------------------*/
2107
2108 static int
2109 get_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2110 {
2111 MonoInst *load;
2112 int i, sel, spill;
2113
2114 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));
2115 /* exclude the registers in the current instruction */
2116 if (reg != ins->sreg1 &&
2117 (reg_is_freeable (ins->sreg1) ||
2118 (ins->sreg1 >= MONO_MAX_IREGS &&
2119 cfg->rs->iassign [ins->sreg1] >= 0))) {
2120 if (ins->sreg1 >= MONO_MAX_IREGS)
2121 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg1]);
2122 else
2123 regmask &= ~ (1 << ins->sreg1);
2124 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2125 }
2126 if (reg != ins->sreg2 &&
2127 (reg_is_freeable (ins->sreg2) ||
2128 (ins->sreg2 >= MONO_MAX_IREGS &&
2129 cfg->rs->iassign [ins->sreg2] >= 0))) {
2130 if (ins->sreg2 >= MONO_MAX_IREGS)
2131 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg2]);
2132 else
2133 regmask &= ~ (1 << ins->sreg2);
2134 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2135 }
2136 if (reg != ins->dreg && reg_is_freeable (ins->dreg)) {
2137 regmask &= ~ (1 << ins->dreg);
2138 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2139 }
2140
2141 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2142 g_assert (regmask); /* need at least a register we can free */
2143 sel = -1;
2144 /* we should track prev_use and spill the register that's farther */
2145 for (i = 0; i < MONO_MAX_IREGS; ++i) {
2146 if (regmask & (1 << i)) {
2147 sel = i;
2148 DEBUG (g_print ("selected register %s has assignment %d\n", mono_arch_regname (sel), cfg->rs->iassign [sel]));
2149 break;
2150 }
2151 }
2152 i = cfg->rs->isymbolic [sel];
2153 spill = ++cfg->spill_count;
2154 cfg->rs->iassign [i] = -spill - 1;
2155 mono_regstate_free_int (cfg->rs, sel);
2156 /* we need to create a spill var and insert a load to sel after the current instruction */
2157 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2158 load->dreg = sel;
2159 load->inst_basereg = cfg->frame_reg;
2160 load->inst_offset = mono_spillvar_offset (cfg, spill);
2161 if (item->prev) {
2162 while (ins->next != item->prev->data)
2163 ins = ins->next;
2164 }
2165 load->next = ins->next;
2166 ins->next = load;
2167 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2168 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2169 g_assert (i == sel);
2170
2171 return sel;
2172 }
2173
2174 /*========================= End of Function ========================*/
2175
2176 /*------------------------------------------------------------------*/
2177 /* */
2178 /* Name - get_float_register_spilling */
2179 /* */
2180 /* Function - */
2181 /* */
2182 /*------------------------------------------------------------------*/
2183
2184 static int
2185 get_float_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2186 {
2187 MonoInst *load;
2188 int i, sel, spill;
2189
2190 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));
2191 /* exclude the registers in the current instruction */
2192 if (reg != ins->sreg1 &&
2193 (freg_is_freeable (ins->sreg1) ||
2194 (ins->sreg1 >= MONO_MAX_FREGS &&
2195 cfg->rs->fassign [ins->sreg1] >= 0))) {
2196 if (ins->sreg1 >= MONO_MAX_FREGS)
2197 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg1]);
2198 else
2199 regmask &= ~ (1 << ins->sreg1);
2200 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2201 }
2202 if (reg != ins->sreg2 &&
2203 (freg_is_freeable (ins->sreg2) ||
2204 (ins->sreg2 >= MONO_MAX_FREGS &&
2205 cfg->rs->fassign [ins->sreg2] >= 0))) {
2206 if (ins->sreg2 >= MONO_MAX_FREGS)
2207 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg2]);
2208 else
2209 regmask &= ~ (1 << ins->sreg2);
2210 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2211 }
2212 if (reg != ins->dreg && freg_is_freeable (ins->dreg)) {
2213 regmask &= ~ (1 << ins->dreg);
2214 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2215 }
2216
2217 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2218 g_assert (regmask); /* need at least a register we can free */
2219 sel = -1;
2220 /* we should track prev_use and spill the register that's farther */
2221 for (i = 0; i < MONO_MAX_FREGS; ++i) {
2222 if (regmask & (1 << i)) {
2223 sel = i;
2224 DEBUG (g_print ("selected register %s has assignment %d\n",
2225 mono_arch_regname (sel), cfg->rs->fassign [sel]));
2226 break;
2227 }
2228 }
2229 i = cfg->rs->fsymbolic [sel];
2230 spill = ++cfg->spill_count;
2231 cfg->rs->fassign [i] = -spill - 1;
2232 mono_regstate_free_float(cfg->rs, sel);
2233 /* we need to create a spill var and insert a load to sel after the current instruction */
2234 MONO_INST_NEW (cfg, load, OP_LOADR8_MEMBASE);
2235 load->dreg = sel;
2236 load->inst_basereg = cfg->frame_reg;
2237 load->inst_offset = mono_spillvar_offset_float (cfg, spill);
2238 if (item->prev) {
2239 while (ins->next != item->prev->data)
2240 ins = ins->next;
2241 }
2242 load->next = ins->next;
2243 ins->next = load;
2244 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2245 i = mono_regstate_alloc_float (cfg->rs, 1 << sel);
2246 g_assert (i == sel);
2247
2248 return sel;
2249 }
2250
2251 /*========================= End of Function ========================*/
2252
2253 /*------------------------------------------------------------------*/
2254 /* */
2255 /* Name - create_copy_ins */
2256 /* */
2257 /* Function - Create an instruction to copy from reg to reg. */
2258 /* */
2259 /*------------------------------------------------------------------*/
2260
2261 static MonoInst*
2262 create_copy_ins (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2263 {
2264 MonoInst *copy;
2265 MONO_INST_NEW (cfg, copy, OP_MOVE);
2266 copy->dreg = dest;
2267 copy->sreg1 = src;
2268 if (ins) {
2269 copy->next = ins->next;
2270 ins->next = copy;
2271 }
2272 DEBUG (g_print ("\tforced copy from %s to %s\n",
2273 mono_arch_regname (src), mono_arch_regname (dest)));
2274 return copy;
2275 }
2276
2277 /*========================= End of Function ========================*/
2278
2279 /*------------------------------------------------------------------*/
2280 /* */
2281 /* Name - create_copy_ins_float */
2282 /* */
2283 /* Function - Create an instruction to copy from float reg to */
2284 /* float reg. */
2285 /* */
2286 /*------------------------------------------------------------------*/
2287
2288 static MonoInst*
2289 create_copy_ins_float (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2290 {
2291 MonoInst *copy;
2292 MONO_INST_NEW (cfg, copy, OP_FMOVE);
2293 copy->dreg = dest;
2294 copy->sreg1 = src;
2295 if (ins) {
2296 copy->next = ins->next;
2297 ins->next = copy;
2298 }
2299 DEBUG (g_print ("\tforced copy from %s to %s\n",
2300 mono_arch_regname (src), mono_arch_regname (dest)));
2301 return copy;
2302 }
2303
2304 /*========================= End of Function ========================*/
2305
2306 /*------------------------------------------------------------------*/
2307 /* */
2308 /* Name - create_spilled_store */
2309 /* */
2310 /* Function - Spill register to storage. */
2311 /* */
2312 /*------------------------------------------------------------------*/
2313
2314 static MonoInst*
2315 create_spilled_store (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2316 {
2317 MonoInst *store;
2318 MONO_INST_NEW (cfg, store, OP_STORE_MEMBASE_REG);
2319 store->sreg1 = reg;
2320 store->inst_destbasereg = cfg->frame_reg;
2321 store->inst_offset = mono_spillvar_offset (cfg, spill);
2322 if (ins) {
2323 store->next = ins->next;
2324 ins->next = store;
2325 }
2326 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2327 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2328 return store;
2329 }
2330
2331 /*========================= End of Function ========================*/
2332
2333 /*------------------------------------------------------------------*/
2334 /* */
2335 /* Name - create_spilled_store_float */
2336 /* */
2337 /* Function - Spill floating point register to storage. */
2338 /* */
2339 /*------------------------------------------------------------------*/
2340
2341 static MonoInst*
2342 create_spilled_store_float (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2343 {
2344 MonoInst *store;
2345 MONO_INST_NEW (cfg, store, OP_STORER8_MEMBASE_REG);
2346 store->sreg1 = reg;
2347 store->inst_destbasereg = cfg->frame_reg;
2348 store->inst_offset = mono_spillvar_offset_float (cfg, spill);
2349 if (ins) {
2350 store->next = ins->next;
2351 ins->next = store;
2352 }
2353 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2354 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2355 return store;
2356 }
2357
2358 /*========================= End of Function ========================*/
2359
2360 /*------------------------------------------------------------------*/
2361 /* */
2362 /* Name - insert_before_ins */
2363 /* */
2364 /* Function - Insert an instruction before another. */
2365 /* */
2366 /*------------------------------------------------------------------*/
2367
2368 static void
2369 insert_before_ins (MonoInst *ins, InstList *item, MonoInst* to_insert)
2370 {
2371 MonoInst *prev;
2372 g_assert (item->next);
2373 prev = item->next->data;
2374
2375 while (prev->next != ins)
2376 prev = prev->next;
2377 to_insert->next = ins;
2378 prev->next = to_insert;
2379 /*
2380 * needed otherwise in the next instruction we can add an ins to the
2381 * end and that would get past this instruction.
2382 */
2383 item->data = to_insert;
2384 }
2385
2386 /*========================= End of Function ========================*/
2387
2388 /*------------------------------------------------------------------*/
2389 /* */
2390 /* Name - alloc_int_reg */
2391 /* */
2392 /* Function - Allocate a general register. */
2393 /* */
2394 /*------------------------------------------------------------------*/
2395
2396 static int
2397 alloc_int_reg (MonoCompile *cfg, InstList *curinst, MonoInst *ins, int sym_reg, guint32 allow_mask)
2398 {
2399 int val = cfg->rs->iassign [sym_reg];
2400 DEBUG (g_print ("Allocating a general register for %d (%d) with mask %08x\n",val,sym_reg,allow_mask));
2401 if (val < 0) {
2402 int spill = 0;
2403 if (val < -1) {
2404 /* the register gets spilled after this inst */
2405 spill = -val -1;
2406 }
2407 val = mono_regstate_alloc_int (cfg->rs, allow_mask);
2408 if (val < 0)
2409 val = get_register_spilling (cfg, curinst, ins, allow_mask, sym_reg);
2410 cfg->rs->iassign [sym_reg] = val;
2411 /* add option to store before the instruction for src registers */
2412 if (spill)
2413 create_spilled_store (cfg, spill, val, sym_reg, ins);
2414 }
2415 DEBUG (g_print ("Allocated %d for %d\n",val,sym_reg));
2416 cfg->rs->isymbolic [val] = sym_reg;
2417 return val;
2418 }
2419
2420 /*========================= End of Function ========================*/
2421
2422 /*------------------------------------------------------------------*/
2423 /* */
2424 /* Name - mono_arch_local_regalloc. */
2425 /* */
2426 /* Function - We first scan the list of instructions and we */
2427 /* save the liveness information of each register */
2428 /* (when the register is first used, when its value */
2429 /* is set etc.). We also reverse the list of instr- */
2430 /* uctions (in the InstList list) because assigning */
2431 /* registers backwards allows for more tricks to be */
2432 /* used. */
2433 /* */
2434 /*------------------------------------------------------------------*/
2435
2436 void
2437 mono_arch_local_regalloc (MonoCompile *cfg, MonoBasicBlock *bb)
2438 {
2439 MonoInst *ins;
2440 MonoRegState *rs = cfg->rs;
2441 int i, val;
2442 RegTrack *reginfo, *reginfof;
2443 RegTrack *reginfo1, *reginfo2, *reginfod;
2444 InstList *tmp, *reversed = NULL;
2445 const char *spec;
2446 guint32 src1_mask, src2_mask, dest_mask;
2447 guint32 cur_iregs, cur_fregs;
2448
2449 if (!bb->code)
2450 return;
2451 rs->next_vireg = bb->max_ireg;
2452 rs->next_vfreg = bb->max_freg;
2453 mono_regstate_assign (rs);
2454 reginfo = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vireg);
2455 reginfof = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vfreg);
2456 rs->ifree_mask = S390_CALLER_REGS;
2457 rs->ffree_mask = S390_CALLER_FREGS;
2458
2459 ins = bb->code;
2460 i = 1;
2461 DEBUG (g_print ("LOCAL regalloc: basic block: %d\n", bb->block_num));
2462 /* forward pass on the instructions to collect register liveness info */
2463 while (ins) {
2464 spec = ins_spec [ins->opcode];
2465 DEBUG (print_ins (i, ins));
2466 if (spec [MONO_INST_CLOB] == 'c') {
2467 MonoCallInst * call = (MonoCallInst*)ins;
2468 int j;
2469 }
2470 if (spec [MONO_INST_SRC1]) {
2471 if (spec [MONO_INST_SRC1] == 'f')
2472 reginfo1 = reginfof;
2473 else
2474 reginfo1 = reginfo;
2475 reginfo1 [ins->sreg1].prev_use = reginfo1 [ins->sreg1].last_use;
2476 reginfo1 [ins->sreg1].last_use = i;
2477 } else {
2478 ins->sreg1 = -1;
2479 }
2480 if (spec [MONO_INST_SRC2]) {
2481 if (spec [MONO_INST_SRC2] == 'f')
2482 reginfo2 = reginfof;
2483 else
2484 reginfo2 = reginfo;
2485 reginfo2 [ins->sreg2].prev_use = reginfo2 [ins->sreg2].last_use;
2486 reginfo2 [ins->sreg2].last_use = i;
2487 } else {
2488 ins->sreg2 = -1;
2489 }
2490 if (spec [MONO_INST_DEST]) {
2491 if (spec [MONO_INST_DEST] == 'f')
2492 reginfod = reginfof;
2493 else
2494 reginfod = reginfo;
2495 if (spec [MONO_INST_DEST] != 'b') /* it's not just a base register */
2496 reginfod [ins->dreg].killed_in = i;
2497 reginfod [ins->dreg].prev_use = reginfod [ins->dreg].last_use;
2498 reginfod [ins->dreg].last_use = i;
2499 if (reginfod [ins->dreg].born_in == 0 || reginfod [ins->dreg].born_in > i)
2500 reginfod [ins->dreg].born_in = i;
2501 if (spec [MONO_INST_DEST] == 'l') {
2502 /* result in eax:edx, the virtual register is allocated sequentially */
2503 reginfod [ins->dreg + 1].prev_use = reginfod [ins->dreg + 1].last_use;
2504 reginfod [ins->dreg + 1].last_use = i;
2505 if (reginfod [ins->dreg + 1].born_in == 0 || reginfod [ins->dreg + 1].born_in > i)
2506 reginfod [ins->dreg + 1].born_in = i;
2507 }
2508 } else {
2509 ins->dreg = -1;
2510 }
2511 reversed = inst_list_prepend (cfg->mempool, reversed, ins);
2512 ++i;
2513 ins = ins->next;
2514 }
2515
2516 cur_iregs = S390_CALLER_REGS;
2517 cur_fregs = S390_CALLER_FREGS;
2518
2519 DEBUG (print_regtrack (reginfo, rs->next_vireg));
2520 DEBUG (print_regtrack (reginfof, rs->next_vfreg));
2521 tmp = reversed;
2522 while (tmp) {
2523 int prev_dreg, prev_sreg1, prev_sreg2;
2524 --i;
2525 ins = tmp->data;
2526 spec = ins_spec [ins->opcode];
2527 DEBUG (g_print ("processing:"));
2528 DEBUG (print_ins (i, ins));
2529 /* make the register available for allocation: FIXME add fp reg */
2530 if (ins->opcode == OP_SETREG || ins->opcode == OP_SETREGIMM) {
2531 cur_iregs |= 1 << ins->dreg;
2532 DEBUG (g_print ("adding %d to cur_iregs\n", ins->dreg));
2533 } else if (ins->opcode == OP_SETFREG) {
2534 cur_fregs |= 1 << ins->dreg;
2535 DEBUG (g_print ("adding %d to cur_fregs\n", ins->dreg));
2536 } else if (spec [MONO_INST_CLOB] == 'c') {
2537 MonoCallInst *cinst = (MonoCallInst*)ins;
2538 DEBUG (g_print ("excluding regs 0x%x from cur_iregs (0x%x)\n",
2539 cinst->used_iregs, cur_iregs));
2540 DEBUG (g_print ("excluding fpregs 0x%x from cur_fregs (0x%x)\n",
2541 cinst->used_fregs, cur_fregs));
2542 cur_iregs &= ~cinst->used_iregs;
2543 cur_fregs &= ~cinst->used_fregs;
2544 DEBUG (g_print ("available cur_iregs: 0x%x\n", cur_iregs));
2545 DEBUG (g_print ("available cur_fregs: 0x%x\n", cur_fregs));
2546 /*------------------------------------------------------------*/
2547 /* registers used by the calling convention are excluded from */
2548 /* allocation: they will be selectively enabled when they are */
2549 /* assigned by the special SETREG opcodes. */
2550 /*------------------------------------------------------------*/
2551 }
2552 dest_mask = src1_mask = src2_mask = cur_iregs;
2553 /*------------------------------------------------------*/
2554 /* update for use with FP regs... */
2555 /*------------------------------------------------------*/
2556 if (spec [MONO_INST_DEST] == 'f') {
2557 dest_mask = cur_fregs;
2558 if (ins->dreg >= MONO_MAX_FREGS) {
2559 val = rs->fassign [ins->dreg];
2560 prev_dreg = ins->dreg;
2561 if (val < 0) {
2562 int spill = 0;
2563 if (val < -1) {
2564 /* the register gets spilled after this inst */
2565 spill = -val -1;
2566 }
2567 val = mono_regstate_alloc_float (rs, dest_mask);
2568 if (val < 0)
2569 val = get_float_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2570 rs->fassign [ins->dreg] = val;
2571 if (spill)
2572 create_spilled_store_float (cfg, spill, val, prev_dreg, ins);
2573 }
2574 DEBUG (g_print ("\tassigned dreg %s to dest R%d\n",
2575 mono_arch_regname (val), ins->dreg));
2576 rs->fsymbolic [val] = prev_dreg;
2577 ins->dreg = val;
2578 if (spec [MONO_INST_CLOB] == 'c' && ins->dreg != s390_f0) {
2579 /* this instruction only outputs to s390_f0, need to copy */
2580 create_copy_ins_float (cfg, ins->dreg, s390_f0, ins);
2581 }
2582 } else {
2583 prev_dreg = -1;
2584 }
2585 if (freg_is_freeable (ins->dreg) && prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i || !(cur_fregs & (1 << ins->dreg)))) {
2586 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2587 mono_regstate_free_float (rs, ins->dreg);
2588 }
2589 } else if (ins->dreg >= MONO_MAX_IREGS) {
2590 val = rs->iassign [ins->dreg];
2591 prev_dreg = ins->dreg;
2592 if (val < 0) {
2593 int spill = 0;
2594 if (val < -1) {
2595 /* the register gets spilled after this inst */
2596 spill = -val -1;
2597 }
2598 val = mono_regstate_alloc_int (rs, dest_mask);
2599 if (val < 0)
2600 val = get_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2601 rs->iassign [ins->dreg] = val;
2602 if (spill)
2603 create_spilled_store (cfg, spill, val, prev_dreg, ins);
2604 }
2605 DEBUG (g_print ("\tassigned dreg %s to dest R%d (prev: R%d)\n",
2606 mono_arch_regname (val), ins->dreg, prev_dreg));
2607 rs->isymbolic [val] = prev_dreg;
2608 ins->dreg = val;
2609 if (spec [MONO_INST_DEST] == 'l') {
2610 int hreg = prev_dreg + 1;
2611 val = rs->iassign [hreg];
2612 if (val < 0) {
2613 int spill = 0;
2614 if (val < -1) {
2615 /* the register gets spilled after this inst */
2616 spill = -val -1;
2617 }
2618 val = mono_regstate_alloc_int (rs, dest_mask);
2619 if (val < 0)
2620 val = get_register_spilling (cfg, tmp, ins, dest_mask, hreg);
2621 rs->iassign [hreg] = val;
2622 if (spill)
2623 create_spilled_store (cfg, spill, val, hreg, ins);
2624 }
2625 DEBUG (g_print ("\tassigned hreg %s to dest R%d\n", mono_arch_regname (val), hreg));
2626 rs->isymbolic [val] = hreg;
2627 /* FIXME:? ins->dreg = val; */
2628 if (ins->dreg == s390_r3) {
2629 if (val != s390_r2)
2630 create_copy_ins (cfg, val, s390_r2, ins);
2631 } else if (ins->dreg == s390_r2) {
2632 if (val == s390_r3) {
2633 /* swap */
2634 create_copy_ins (cfg, s390_r3, s390_r0, ins);
2635 create_copy_ins (cfg, s390_r2, s390_r3, ins);
2636 create_copy_ins (cfg, s390_r0, s390_r2, ins);
2637 } else {
2638 /* two forced copies */
2639 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2640 create_copy_ins (cfg, val, s390_r2, ins);
2641 }
2642 } else {
2643 if (val == s390_r2) {
2644 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2645 } else {
2646 /* two forced copies */
2647 create_copy_ins (cfg, val, s390_r2, ins);
2648 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2649 }
2650 }
2651 if (reg_is_freeable (val) && hreg >= 0 && (reginfo [hreg].born_in >= i && !(cur_iregs & (1 << val)))) {
2652 DEBUG (g_print ("\tfreeable %s (R%d)\n", mono_arch_regname (val), hreg));
2653 mono_regstate_free_int (rs, val);
2654 }
2655 } else if (spec [MONO_INST_DEST] == 'a' && ins->dreg != s390_r2 && spec [MONO_INST_CLOB] != 'd') {
2656 /* this instruction only outputs to s390_r2, need to copy */
2657 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2658 }
2659 } else {
2660 prev_dreg = -1;
2661 }
2662 if (spec [MONO_INST_DEST] == 'f' &&
2663 freg_is_freeable (ins->dreg) &&
2664 prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i)) {
2665 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2666 mono_regstate_free_float (rs, ins->dreg);
2667 } else if (spec [MONO_INST_DEST] != 'f' &&
2668 reg_is_freeable (ins->dreg) &&
2669 prev_dreg >= 0 && (reginfo [prev_dreg].born_in >= i)) {
2670 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2671 mono_regstate_free_int (rs, ins->dreg);
2672 }
2673 if (spec [MONO_INST_SRC1] == 'f') {
2674 src1_mask = cur_fregs;
2675 if (ins->sreg1 >= MONO_MAX_FREGS) {
2676 val = rs->fassign [ins->sreg1];
2677 prev_sreg1 = ins->sreg1;
2678 if (val < 0) {
2679 int spill = 0;
2680 if (val < -1) {
2681 /* the register gets spilled after this inst */
2682 spill = -val -1;
2683 }
2684 //g_assert (val == -1); /* source cannot be spilled */
2685 val = mono_regstate_alloc_float (rs, src1_mask);
2686 if (val < 0)
2687 val = get_float_register_spilling (cfg, tmp, ins, src1_mask, ins->sreg1);
2688 rs->fassign [ins->sreg1] = val;
2689 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n", mono_arch_regname (val), ins->sreg1));
2690 if (spill) {
2691 MonoInst *store = create_spilled_store_float (cfg, spill, val, prev_sreg1, NULL);
2692 insert_before_ins (ins, tmp, store);
2693 }
2694 }
2695 rs->fsymbolic [val] = prev_sreg1;
2696 ins->sreg1 = val;
2697 } else {
2698 prev_sreg1 = -1;
2699 }
2700 } else if (ins->sreg1 >= MONO_MAX_IREGS) {
2701 val = rs->iassign [ins->sreg1];
2702 prev_sreg1 = ins->sreg1;
2703 if (val < 0) {
2704 int spill = 0;
2705 if (val < -1) {
2706 /* the register gets spilled after this inst */
2707 spill = -val -1;
2708 }
2709 val = mono_regstate_alloc_int (rs, src1_mask);
2710 if (val < 0)
2711 val = get_register_spilling (cfg, tmp, ins,
2712 src1_mask,
2713 ins->sreg1);
2714 rs->iassign [ins->sreg1] = val;
2715 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n",
2716 mono_arch_regname (val), ins->sreg1));
2717 if (spill) {
2718 MonoInst *store;
2719 store = create_spilled_store (cfg, spill, val,
2720 prev_sreg1, NULL);
2721 insert_before_ins (ins, tmp, store);
2722 }
2723 }
2724 rs->isymbolic [val] = prev_sreg1;
2725 ins->sreg1 = val;
2726 } else {
2727 prev_sreg1 = -1;
2728 }
2729 /*----------------------------------------------*/
2730 /* handle clobbering of sreg1 */
2731 /*----------------------------------------------*/
2732 if ((spec [MONO_INST_CLOB] == '1' ||
2733 spec [MONO_INST_CLOB] == 's') &&
2734 ins->dreg != ins->sreg1) {
2735 MonoInst *copy;
2736 copy = create_copy_ins (cfg, ins->dreg, ins->sreg1, NULL);
2737 DEBUG (g_print ("\tneed to copy sreg1 %s to dreg %s\n",
2738 mono_arch_regname (ins->sreg1),
2739 mono_arch_regname (ins->dreg)));
2740 if (ins->sreg2 == -1 || spec [MONO_INST_CLOB] == 's') {
2741 /* note: the copy is inserted before the current instruction! */
2742 insert_before_ins (ins, tmp, copy);
2743 /* we set sreg1 to dest as well */
2744 prev_sreg1 = ins->sreg1 = ins->dreg;
2745 } else {
2746 /* inserted after the operation */
2747 copy->next = ins->next;
2748 ins->next = copy;
2749 }
2750 }
2751
2752 if (spec [MONO_INST_SRC2] == 'f') {
2753 src2_mask = cur_fregs;
2754 if (ins->sreg2 >= MONO_MAX_FREGS) {
2755 val = rs->fassign [ins->sreg2];
2756 prev_sreg2 = ins->sreg2;
2757 if (val < 0) {
2758 int spill = 0;
2759 if (val < -1) {
2760 /* the register gets spilled after this inst */
2761 spill = -val -1;
2762 }
2763 val = mono_regstate_alloc_float (rs, src2_mask);
2764 if (val < 0)
2765 val = get_float_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2766 rs->fassign [ins->sreg2] = val;
2767 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2768 if (spill)
2769 create_spilled_store_float (cfg, spill, val, prev_sreg2, ins);
2770 }
2771 rs->fsymbolic [val] = prev_sreg2;
2772 ins->sreg2 = val;
2773 } else {
2774 prev_sreg2 = -1;
2775 }
2776 } else if (ins->sreg2 >= MONO_MAX_IREGS) {
2777 val = rs->iassign [ins->sreg2];
2778 prev_sreg2 = ins->sreg2;
2779 if (val < 0) {
2780 int spill = 0;
2781 if (val < -1) {
2782 /* the register gets spilled after this inst */
2783 spill = -val -1;
2784 }
2785 val = mono_regstate_alloc_int (rs, src2_mask);
2786 if (val < 0)
2787 val = get_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2788 rs->iassign [ins->sreg2] = val;
2789 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2790 if (spill)
2791 create_spilled_store (cfg, spill, val, prev_sreg2, ins);
2792 }
2793 rs->isymbolic [val] = prev_sreg2;
2794 ins->sreg2 = val;
2795 } else {
2796 prev_sreg2 = -1;
2797 }
2798
2799 if (spec [MONO_INST_CLOB] == 'c') {
2800 int j, s;
2801 guint32 clob_mask = S390_CALLER_REGS;
2802 for (j = 0; j < MONO_MAX_IREGS; ++j) {
2803 s = 1 << j;
2804 if ((clob_mask & s) && !(rs->ifree_mask & s) && j != ins->sreg1) {
2805 //g_warning ("register %s busy at call site\n", mono_arch_regname (j));
2806 }
2807 }
2808 }
2809 /*if (reg_is_freeable (ins->sreg1) && prev_sreg1 >= 0 && reginfo [prev_sreg1].born_in >= i) {
2810 DEBUG (g_print ("freeable %s\n", mono_arch_regname (ins->sreg1)));
2811 mono_regstate_free_int (rs, ins->sreg1);
2812 }
2813 if (reg_is_freeable (ins->sreg2) && prev_sreg2 >= 0 && reginfo [prev_sreg2].born_in >= i) {
2814 DEBUG (g_print ("freeable %s\n", mono_arch_regname (ins->sreg2)));
2815 mono_regstate_free_int (rs, ins->sreg2);
2816 }*/
2817
2818 //DEBUG (print_ins (i, ins));
2819 tmp = tmp->next;
2820 }
2821 }
2822
2823 /*========================= End of Function ========================*/
2824
2825 /*------------------------------------------------------------------*/
2826 /* */
2827 /* Name - emit_float_to_int */
2828 /* */
2829 /* Function - Create instructions which will convert a floating */
2830 /* point value to integer. */
2831 /* */
2832 /*------------------------------------------------------------------*/
2833
2834 static guchar*
2835 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2836 {
2837 /* sreg is a float, dreg is an integer reg. */
2838 if (is_signed) {
2839 s390_cfdbr (code, dreg, 5, sreg);
2840 } else {
2841 s390_basr (code, s390_r13, 0);
2842 s390_j (code, 10);
2843 s390_double (code, 0x41e0000000000000);
2844 s390_double (code, 0x41f0000000000000);
2845 s390_ldr (code, s390_f0, sreg);
2846 s390_cdb (code, s390_f0, 0, s390_r13, 0);
2847 s390_jl (code, 10);
2848 s390_sdb (code, s390_f0, 0, s390_r13, 8);
2849 s390_cfdbr (code, dreg, 7, s390_f0);
2850 s390_j (code, 5);
2851 s390_cfdbr (code, dreg, 5, sreg);
2852 }
2853 return code;
2854 }
2855
2856 /*========================= End of Function ========================*/
2857
2858 /*------------------------------------------------------------------*/
2859 /* */
2860 /* Name - mono_emit_stack_alloc */
2861 /* */
2862 /* Function - */
2863 /* */
2864 /*------------------------------------------------------------------*/
2865
2866 static unsigned char*
2867 mono_emit_stack_alloc (guchar *code, MonoInst* tree)
2868 {
2869 return code;
2870 }
2871
2872 /*========================= End of Function ========================*/
2873
2874 /*------------------------------------------------------------------*/
2875 /* */
2876 /* Name - mono_arch_output_basic_block */
2877 /* */
2878 /* Function - Perform the "real" work of emitting instructions */
2879 /* that will do the work of in the basic block. */
2880 /* */
2881 /*------------------------------------------------------------------*/
2882
2883 void
2884 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
2885 {
2886 MonoInst *ins;
2887 MonoCallInst *call;
2888 guint offset;
2889 guint8 *code = cfg->native_code + cfg->code_len;
2890 MonoInst *last_ins = NULL;
2891 guint last_offset = 0;
2892 int max_len, cpos;
2893
2894 if (cfg->opt & MONO_OPT_PEEPHOLE)
2895 peephole_pass (cfg, bb);
2896
2897 /* we don't align basic blocks of loops on s390 */
2898
2899 if (cfg->verbose_level > 2)
2900 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
2901
2902 cpos = bb->max_offset;
2903
2904 if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
2905 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
2906 //g_assert (!mono_compile_aot);
2907 //cpos += 6;
2908 //if (bb->cil_code)
2909 // cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
2910 /* this is not thread save, but good enough */
2911 /* fixme: howto handle overflows? */
2912 //x86_inc_mem (code, &cov->data [bb->dfn].count);
2913 }
2914
2915 ins = bb->code;
2916 while (ins) {
2917 offset = code - cfg->native_code;
2918
2919 max_len = ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
2920
2921 if (offset > (cfg->code_size - max_len - 16)) {
2922 cfg->code_size *= 2;
2923 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
2924 code = cfg->native_code + offset;
2925 }
2926
2927 switch (ins->opcode) {
2928 case OP_STOREI1_MEMBASE_IMM:
2929 s390_lhi (code, s390_r14, ins->inst_imm);
2930 if (s390_is_uimm12(ins->inst_offset))
2931 s390_stc (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
2932 else {
2933 s390_basr (code, s390_r13, 0);
2934 s390_j (code, 4);
2935 s390_word (code, ins->inst_offset);
2936 s390_l (code, s390_r13, 0, s390_r13, 4);
2937 s390_stc (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
2938 }
2939 break;
2940 case OP_STOREI2_MEMBASE_IMM:
2941 s390_lhi (code, s390_r14, ins->inst_imm);
2942 if (s390_is_uimm12(ins->inst_offset)) {
2943 s390_sth (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
2944 } else {
2945 s390_basr (code, s390_r14, 0);
2946 s390_j (code, 4);
2947 s390_word (code, ins->inst_offset);
2948 s390_l (code, s390_r13, 0, s390_r13, 4);
2949 s390_sth (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
2950 }
2951 break;
2952 case OP_STORE_MEMBASE_IMM:
2953 case OP_STOREI4_MEMBASE_IMM:
2954 if (s390_is_imm16(ins->inst_imm)) {
2955 s390_lhi (code, s390_r14, ins->inst_imm);
2956 } else {
2957 s390_basr (code, s390_r13, 0);
2958 s390_j (code, 4);
2959 s390_word (code, ins->inst_imm);
2960 s390_l (code, s390_r14, 0, s390_r13, 4);
2961 }
2962 if (s390_is_uimm12(ins->inst_offset)) {
2963 s390_st (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
2964 } else {
2965 s390_basr (code, s390_r13, 0);
2966 s390_j (code, 4);
2967 s390_word (code, ins->inst_offset);
2968 s390_l (code, s390_r13, 0, s390_r13, 4);
2969 s390_st (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
2970 }
2971 break;
2972 case OP_STOREI1_MEMBASE_REG:
2973 if (s390_is_uimm12(ins->inst_offset)) {
2974 s390_stc (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2975 } else {
2976 s390_basr (code, s390_r13, 0);
2977 s390_j (code, 4);
2978 s390_word (code, ins->inst_offset);
2979 s390_l (code, s390_r13, 0, s390_r13, 4);
2980 s390_stc (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2981 }
2982 break;
2983 case OP_STOREI2_MEMBASE_REG:
2984 if (s390_is_uimm12(ins->inst_offset)) {
2985 s390_sth (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2986 } else {
2987 s390_basr (code, s390_r13, 0);
2988 s390_j (code, 4);
2989 s390_word (code, ins->inst_offset);
2990 s390_l (code, s390_r13, 0, s390_r13, 4);
2991 s390_sth (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2992 }
2993 break;
2994 case OP_STORE_MEMBASE_REG:
2995 case OP_STOREI4_MEMBASE_REG:
2996 if (s390_is_uimm12(ins->inst_offset)) {
2997 s390_st (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2998 } else {
2999 s390_basr (code, s390_r13, 0);
3000 s390_j (code, 4);
3001 s390_word (code, ins->inst_offset);
3002 s390_l (code, s390_r13, 0, s390_r13, 4);
3003 s390_st (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3004 }
3005 break;
3006 case CEE_LDIND_I:
3007 case CEE_LDIND_I4:
3008 case CEE_LDIND_U4:
3009 s390_basr (code, s390_r13, 0);
3010 s390_j (code, 4);
3011 s390_word (code, ins->inst_p0);
3012 s390_l (code, s390_r13, 0, s390_r13, 4);
3013 s390_l (code, ins->dreg, 0, s390_r13, 0);
3014 break;
3015 case OP_LOADU4_MEM:
3016 g_assert_not_reached ();
3017 break;
3018 case OP_LOAD_MEMBASE:
3019 case OP_LOADI4_MEMBASE:
3020 case OP_LOADU4_MEMBASE:
3021 if (s390_is_uimm12(ins->inst_offset))
3022 s390_l (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3023 else {
3024 if (s390_is_imm16(ins->inst_offset)) {
3025 s390_lhi (code, s390_r13, ins->inst_offset);
3026 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3027 } else {
3028 s390_basr (code, s390_r13, 0);
3029 s390_j (code, 4);
3030 s390_word (code, ins->inst_offset);
3031 s390_l (code, s390_r13, 0, s390_r13, 4);
3032 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3033 }
3034 }
3035 break;
3036 case OP_LOADU1_MEMBASE:
3037 s390_lhi (code, s390_r0, 0);
3038 if (s390_is_uimm12(ins->inst_offset))
3039 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3040 else {
3041 s390_basr (code, s390_r13, 0);
3042 s390_j (code, 4);
3043 s390_word (code, ins->inst_offset);
3044 s390_l (code, s390_r13, 0, s390_r13, 4);
3045 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3046 }
3047 s390_lr (code, ins->dreg, s390_r0);
3048 break;
3049 case OP_LOADI1_MEMBASE:
3050 s390_lhi (code, s390_r0, 0);
3051 if (s390_is_uimm12(ins->inst_offset))
3052 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3053 else {
3054 s390_basr (code, s390_r13, 0);
3055 s390_j (code, 4);
3056 s390_word (code, ins->inst_offset);
3057 s390_l (code, s390_r13, 0, s390_r13, 4);
3058 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3059 }
3060 s390_lhi (code, s390_r13, 0x80);
3061 s390_nr (code, s390_r13, s390_r0);
3062 s390_jz (code, 5);
3063 s390_lhi (code, s390_r13, 0xff00);
3064 s390_or (code, s390_r0, s390_r13);
3065 s390_lr (code, ins->dreg, s390_r0);
3066 break;
3067 case OP_LOADU2_MEMBASE:
3068 s390_lhi (code, s390_r0, 0);
3069 if (s390_is_uimm12(ins->inst_offset))
3070 s390_icm (code, s390_r0, 3, ins->inst_basereg, ins->inst_offset);
3071 else {
3072 s390_basr (code, s390_r13, 0);
3073 s390_j (code, 4);
3074 s390_word (code, ins->inst_offset);
3075 s390_l (code, s390_r13, 0, s390_r13, 4);
3076 s390_ar (code, s390_r13, ins->inst_basereg);
3077 s390_icm (code, s390_r0, 3, s390_r13, 0);
3078 }
3079 s390_lr (code, ins->dreg, s390_r0);
3080 break;
3081 case OP_LOADI2_MEMBASE:
3082 s390_lhi (code, s390_r0, 0);
3083 if (s390_is_uimm12(ins->inst_offset))
3084 s390_lh (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3085 else {
3086 s390_basr (code, s390_r13, 0);
3087 s390_j (code, 4);
3088 s390_word (code, ins->inst_offset);
3089 s390_l (code, s390_r13, 0, s390_r13, 4);
3090 s390_lh (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3091 }
3092 s390_lr (code, ins->dreg, s390_r0);
3093 break;
3094 case CEE_CONV_I1:
3095 s390_lhi (code, s390_r0, 0x80);
3096 if (ins->dreg != ins->sreg1) {
3097 s390_lr (code, ins->dreg, ins->sreg1);
3098 }
3099 s390_nr (code, s390_r0, ins->sreg1);
3100 s390_jl (code, 7);
3101 s390_lhi (code, s390_r13, -1);
3102 s390_sll (code, s390_r13, 0, 8);
3103 s390_or (code, ins->dreg, s390_r13);
3104 break;
3105 case CEE_CONV_I2:
3106 s390_lhi (code, s390_r0, 0x80);
3107 if (ins->dreg != ins->sreg1) {
3108 s390_lr (code, ins->dreg, ins->sreg1);
3109 }
3110 s390_nr (code, s390_r0, ins->sreg1);
3111 s390_jl (code, 7);
3112 s390_lhi (code, s390_r13, -1);
3113 s390_sll (code, s390_r13, 0, 16);
3114 s390_or (code, ins->dreg, s390_r13);
3115 break;
3116 case CEE_CONV_U1:
3117 s390_lhi (code, s390_r0, 0xff);
3118 if (ins->dreg != ins->sreg1) {
3119 s390_lr (code, ins->dreg, ins->sreg1);
3120 }
3121 s390_nr (code, ins->dreg, s390_r0);
3122 break;
3123 case CEE_CONV_U2:
3124 s390_lhi (code, s390_r0, -1);
3125 s390_sll (code, s390_r0, 0, 16);
3126 s390_srl (code, s390_r0, 0, 16);
3127 if (ins->dreg != ins->sreg1) {
3128 s390_lr (code, ins->dreg, ins->sreg1);
3129 }
3130 s390_nr (code, ins->dreg, s390_r0);
3131 break;
3132 case OP_COMPARE:
3133 if ((ins->next) &&
3134 ((ins->next->opcode >= CEE_BNE_UN) &&
3135 (ins->next->opcode <= CEE_BLT_UN)))
3136 s390_clr (code, ins->sreg1, ins->sreg2);
3137 else
3138 s390_cr (code, ins->sreg1, ins->sreg2);
3139 break;
3140 case OP_COMPARE_IMM:
3141 if (s390_is_imm16 (ins->inst_imm)) {
3142 s390_lhi (code, s390_r0, ins->inst_imm);
3143 if ((ins->next) &&
3144 ((ins->next->opcode >= CEE_BNE_UN) &&
3145 (ins->next->opcode <= CEE_BLT_UN)))
3146 s390_clr (code, ins->sreg1, s390_r0);
3147 else
3148 s390_cr (code, ins->sreg1, s390_r0);
3149 }
3150 else {
3151 s390_basr (code, s390_r13, 0);
3152 s390_j (code, 4);
3153 s390_word (code, ins->inst_imm);
3154 if ((ins->next) &&
3155 ((ins->next->opcode >= CEE_BNE_UN) &&
3156 (ins->next->opcode <= CEE_BLT_UN)))
3157 s390_cl (code, ins->sreg1, 0, s390_r13, 4);
3158 else
3159 s390_c (code, ins->sreg1, 0, s390_r13, 4);
3160 }
3161 break;
3162 case OP_X86_TEST_NULL:
3163 s390_ltr (code, ins->sreg1, ins->sreg1);
3164 break;
3165 case CEE_BREAK:
3166 s390_break (code);
3167 break;
3168 case OP_ADDCC:
3169 if (ins->dreg != ins->sreg1) {
3170 s390_lr (code, ins->dreg, ins->sreg1);
3171 }
3172 s390_alr (code, ins->dreg, ins->sreg2);
3173 break;
3174 case CEE_ADD:
3175 if (ins->dreg != ins->sreg1) {
3176 s390_lr (code, ins->dreg, ins->sreg1);
3177 }
3178 s390_ar (code, ins->dreg, ins->sreg2);
3179 break;
3180 case OP_ADC:
3181 if (ins->dreg != ins->sreg1) {
3182 s390_lr (code, ins->dreg, ins->sreg1);
3183 }
3184 s390_alcr (code, ins->dreg, ins->sreg2);
3185 break;
3186 case OP_ADD_IMM:
3187 if ((ins->next) &&
3188 (ins->next->opcode == OP_ADC_IMM)) {
3189 s390_basr (code, s390_r13, 0);
3190 s390_j (code, 4);
3191 s390_word (code, ins->inst_imm);
3192 if (ins->dreg != ins->sreg1) {
3193 s390_lr (code, ins->dreg, ins->sreg1);
3194 }
3195 s390_al (code, ins->dreg, 0, s390_r13, 4);
3196 } else {
3197 if (s390_is_imm16 (ins->inst_imm)) {
3198 if (ins->dreg != ins->sreg1) {
3199 s390_lr (code, ins->dreg, ins->sreg1);
3200 }
3201 s390_ahi (code, ins->dreg, ins->inst_imm);
3202 } else {
3203 s390_basr (code, s390_r13, 0);
3204 s390_j (code, 4);
3205 s390_word (code, ins->inst_imm);
3206 if (ins->dreg != ins->sreg1) {
3207 s390_lr (code, ins->dreg, ins->sreg1);
3208 }
3209 s390_a (code, ins->dreg, 0, s390_r13, 4);
3210 }
3211 }
3212 break;
3213 case OP_ADC_IMM:
3214 if (s390_is_imm16 (ins->inst_imm)) {
3215 if (ins->dreg != ins->sreg1) {
3216 s390_lr (code, ins->dreg, ins->sreg1);
3217 }
3218 s390_lhi (code, s390_r0, ins->inst_imm);
3219 s390_alcr (code, ins->dreg, s390_r0);
3220 } else {
3221 s390_basr (code, s390_r13, 0);
3222 s390_j (code, 4);
3223 s390_word (code, ins->inst_imm);
3224 s390_l (code, s390_r13, 0, s390_r13, 4);
3225 s390_alcr (code, ins->dreg, s390_r13);
3226 }
3227 break;
3228 case OP_SUBCC:
3229 if (ins->dreg != ins->sreg1) {
3230 s390_lr (code, ins->dreg, ins->sreg1);
3231 }
3232 s390_sr (code, ins->dreg, ins->sreg2);
3233 break;
3234 case CEE_SUB:
3235 if (ins->dreg != ins->sreg1) {
3236 s390_lr (code, ins->dreg, ins->sreg1);
3237 }
3238 s390_sr (code, ins->dreg, ins->sreg2);
3239 break;
3240 case OP_SBB:
3241 if (ins->dreg != ins->sreg1) {
3242 s390_lr (code, ins->dreg, ins->sreg1);
3243 }
3244 s390_slbr (code, ins->dreg, ins->sreg2);
3245 break;
3246 case OP_SUB_IMM:
3247 if (s390_is_imm16 (-ins->inst_imm)) {
3248 if (ins->dreg != ins->sreg1) {
3249 s390_lr (code, ins->dreg, ins->sreg1);
3250 }
3251 s390_ahi (code, ins->dreg, -ins->inst_imm);
3252 } else {
3253 s390_basr (code, s390_r13, 0);
3254 s390_j (code, 4);
3255 s390_word (code, ins->inst_imm);
3256 if (ins->dreg != ins->sreg1) {
3257 s390_lr (code, ins->dreg, ins->sreg1);
3258 }
3259 s390_s (code, ins->dreg, 0, s390_r13, 4);
3260 }
3261 break;
3262 case OP_SBB_IMM:
3263 s390_basr (code, s390_r13, 0);
3264 s390_j (code, 4);
3265 s390_word (code, ins->inst_imm);
3266 s390_sl (code, ins->dreg, 0, s390_r13, 4);
3267 break;
3268 case CEE_AND:
3269 if (ins->sreg1 == ins->dreg) {
3270 s390_nr (code, ins->dreg, ins->sreg2);
3271 }
3272 else {
3273 if (ins->sreg2 == ins->dreg) {
3274 s390_nr (code, ins->dreg, ins->sreg1);
3275 }
3276 else {
3277 s390_lr (code, ins->dreg, ins->sreg1);
3278 s390_nr (code, ins->dreg, ins->sreg2);
3279 }
3280 }
3281 break;
3282 case OP_AND_IMM:
3283 if (s390_is_imm16 (ins->inst_imm)) {
3284 s390_lhi (code, s390_r0, ins->inst_imm);
3285 if (ins->dreg != ins->sreg1) {
3286 s390_lr (code, ins->dreg, ins->sreg1);
3287 }
3288 s390_nr (code, ins->dreg, s390_r0);
3289 } else {
3290 s390_basr (code, s390_r13, 0);
3291 s390_j (code, 4);
3292 s390_word (code, ins->inst_imm);
3293 if (ins->dreg != ins->sreg1) {
3294 s390_lr (code, ins->dreg, ins->sreg1);
3295 }
3296 s390_n (code, ins->dreg, 0, s390_r13, 4);
3297 }
3298 break;
3299 case CEE_DIV:
3300 s390_lr (code, s390_r0, ins->sreg1);
3301 s390_srda (code, s390_r0, 0, 32);
3302 s390_dr (code, s390_r0, ins->sreg2);
3303 s390_lr (code, ins->dreg, s390_r1);
3304 break;
3305 case CEE_DIV_UN:
3306 s390_lr (code, s390_r0, ins->sreg1);
3307 s390_srdl (code, s390_r0, 0, 32);
3308 s390_dlr (code, s390_r0, ins->sreg2);
3309 s390_lr (code, ins->dreg, s390_r1);
3310 break;
3311 case OP_DIV_IMM:
3312 if (s390_is_imm16 (ins->inst_imm)) {
3313 s390_lhi (code, s390_r13, ins->inst_imm);
3314 s390_lr (code, s390_r0, ins->sreg1);
3315 } else {
3316 s390_basr (code, s390_r13, 0);
3317 s390_j (code, 4);
3318 s390_word (code, ins->inst_imm);
3319 s390_lr (code, s390_r0, ins->sreg1);
3320 s390_l (code, s390_r13, 0, s390_r13, 4);
3321 }
3322 s390_srda (code, s390_r0, 0, 32);
3323 s390_dr (code, s390_r0, ins->sreg2);
3324 s390_lr (code, ins->dreg, s390_r1);
3325 break;
3326 case CEE_REM:
3327 s390_lr (code, s390_r0, ins->sreg1);
3328 s390_srda (code, s390_r0, 0, 32);
3329 s390_dr (code, s390_r0, ins->sreg2);
3330 s390_lr (code, ins->dreg, s390_r0);
3331 break;
3332 case CEE_REM_UN:
3333 s390_lr (code, s390_r0, ins->sreg1);
3334 s390_srdl (code, s390_r0, 0, 32);
3335 s390_dlr (code, s390_r0, ins->sreg2);
3336 s390_lr (code, ins->dreg, s390_r0);
3337 break;
3338 case OP_REM_IMM:
3339 if (s390_is_imm16 (ins->inst_imm)) {
3340 s390_lhi (code, s390_r13, ins->inst_imm);
3341 s390_lr (code, s390_r0, ins->sreg1);
3342 } else {
3343 s390_basr (code, s390_r13, 0);
3344 s390_j (code, 4);
3345 s390_word (code, ins->inst_imm);
3346 s390_lr (code, s390_r0, ins->sreg1);
3347 s390_l (code, s390_r13, 0, s390_r13, 4);
3348 }
3349 s390_srda (code, s390_r0, 0, 32);
3350 s390_dr (code, s390_r0, ins->sreg2);
3351 s390_lr (code, ins->dreg, s390_r0);
3352 break;
3353 case CEE_OR:
3354 if (ins->sreg1 == ins->dreg) {
3355 s390_or (code, ins->dreg, ins->sreg2);
3356 }
3357 else {
3358 if (ins->sreg2 == ins->dreg) {
3359 s390_or (code, ins->dreg, ins->sreg1);
3360 }
3361 else {
3362 s390_lr (code, ins->dreg, ins->sreg1);
3363 s390_or (code, ins->dreg, ins->sreg2);
3364 }
3365 }
3366 break;
3367 case OP_OR_IMM:
3368 if (s390_is_imm16 (ins->inst_imm)) {
3369 s390_lhi (code, s390_r0, ins->inst_imm);
3370 if (ins->dreg != ins->sreg1) {
3371 s390_lr (code, ins->dreg, ins->sreg1);
3372 }
3373 s390_or (code, ins->dreg, s390_r0);
3374 } else {
3375 s390_bras (code, s390_r13, 4);
3376 s390_word (code, ins->inst_imm);
3377 if (ins->dreg != ins->sreg1) {
3378 s390_lr (code, ins->dreg, ins->sreg1);
3379 }
3380 s390_o (code, ins->dreg, 0, s390_r13, 0);
3381 }
3382 break;
3383 case CEE_XOR:
3384 if (ins->sreg1 == ins->dreg) {
3385 s390_xr (code, ins->dreg, ins->sreg2);
3386 }
3387 else {
3388 if (ins->sreg2 == ins->dreg) {
3389 s390_xr (code, ins->dreg, ins->sreg1);
3390 }
3391 else {
3392 s390_lr (code, ins->dreg, ins->sreg1);
3393 s390_xr (code, ins->dreg, ins->sreg2);
3394 }
3395 }
3396 break;
3397 case OP_XOR_IMM:
3398 if (s390_is_imm16 (ins->inst_imm)) {
3399 s390_lhi (code, s390_r0, ins->inst_imm);
3400 if (ins->dreg != ins->sreg1) {
3401 s390_lr (code, ins->dreg, ins->sreg1);
3402 }
3403 s390_xr (code, ins->dreg, s390_r0);
3404 } else {
3405 s390_basr (code, s390_r13, 0);
3406 s390_j (code, 4);
3407 s390_word (code, ins->inst_imm);
3408 if (ins->dreg != ins->sreg1) {
3409 s390_lr (code, ins->dreg, ins->sreg1);
3410 }
3411 s390_x (code, ins->dreg, 0, s390_r13, 4);
3412 }
3413 break;
3414 case CEE_SHL:
3415 if (ins->sreg1 != ins->dreg) {
3416 s390_lr (code, ins->dreg, ins->sreg1);
3417 }
3418 s390_sll (code, ins->dreg, ins->sreg2, 0);
3419 break;
3420 case OP_SHL_IMM:
3421 if (ins->sreg1 != ins->dreg) {
3422 s390_lr (code, ins->dreg, ins->sreg1);
3423 }
3424 s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3425 break;
3426 case CEE_SHR:
3427 if (ins->sreg1 != ins->dreg) {
3428 s390_lr (code, ins->dreg, ins->sreg1);
3429 }
3430 s390_sra (code, ins->dreg, ins->sreg2, 0);
3431 break;
3432 case OP_SHR_IMM:
3433 if (ins->sreg1 != ins->dreg) {
3434 s390_lr (code, ins->dreg, ins->sreg1);
3435 }
3436 s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3437 break;
3438 case OP_SHR_UN_IMM:
3439 if (ins->sreg1 != ins->dreg) {
3440 s390_lr (code, ins->dreg, ins->sreg1);
3441 }
3442 s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3443 break;
3444 case CEE_SHR_UN:
3445 if (ins->sreg1 != ins->dreg) {
3446 s390_lr (code, ins->dreg, ins->sreg1);
3447 }
3448 s390_srl (code, ins->dreg, ins->sreg2, 0);
3449 break;
3450 case CEE_NOT:
3451 if (ins->sreg1 != ins->dreg) {
3452 s390_lr (code, ins->dreg, ins->sreg1);
3453 }
3454 s390_lhi (code, s390_r0, -1);
3455 s390_xr (code, ins->dreg, s390_r0);
3456 break;
3457 case CEE_NEG:
3458 s390_lcr (code, ins->dreg, ins->sreg1);
3459 break;
3460 case CEE_MUL:
3461 if (ins->sreg1 == ins->dreg) {
3462 s390_msr (code, ins->dreg, ins->sreg2);
3463 }
3464 else {
3465 if (ins->sreg2 == ins->dreg) {
3466 s390_msr (code, ins->dreg, ins->sreg1);
3467 }
3468 else {
3469 s390_lr (code, ins->dreg, ins->sreg1);
3470 s390_msr (code, ins->dreg, ins->sreg2);
3471 }
3472 }
3473 break;
3474 case OP_MUL_IMM:
3475 if (s390_is_imm16 (ins->inst_imm)) {
3476 s390_lhi (code, s390_r13, ins->inst_imm);
3477 } else {
3478 s390_basr (code, s390_r13, 0);
3479 s390_j (code, 4);
3480 s390_word (code, ins->inst_imm);
3481 if (ins->dreg != ins->sreg1) {
3482 s390_lr (code, ins->dreg, ins->sreg1);
3483 }
3484 s390_l (code, s390_r13, 0, s390_r13, 4);
3485 }
3486 s390_msr (code, ins->dreg, s390_r13);
3487 break;
3488 case CEE_MUL_OVF:
3489 s390_lhi (code, s390_r0, 0);
3490 s390_lr (code, s390_r1, ins->sreg1);
3491 s390_mr (code, s390_r0, ins->sreg2);
3492 s390_ltr (code, s390_r0, s390_r0);
3493 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3494 s390_lr (code, ins->dreg, s390_r1);
3495 break;
3496 case CEE_MUL_OVF_UN:
3497 s390_lhi (code, s390_r0, 0);
3498 s390_lr (code, s390_r1, ins->sreg1);
3499 s390_mlr (code, s390_r0, ins->sreg2);
3500 s390_ltr (code, s390_r0, s390_r0);
3501 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3502 s390_lr (code, ins->dreg, s390_r1);
3503 break;
3504 case OP_LMUL:
3505 s390_l (code, s390_r0, 0, ins->sreg1, 4);
3506 s390_lr (code, s390_r14, s390_r0);
3507 s390_srda (code, s390_r0, 0, 32);
3508 s390_m (code, s390_r0, 0, ins->sreg2, 4);
3509 s390_srl (code, s390_r14, 0, 31);
3510 s390_a (code, s390_r14, 0, ins->sreg1, 0);
3511 s390_l (code, s390_r13, 0, ins->sreg2, 0);
3512 s390_srl (code, s390_r13, 0, 31);
3513 s390_ms (code, s390_r13, 0, ins->sreg1, 4);
3514 s390_ar (code, s390_r14, s390_r13);
3515 s390_st (code, s390_r14, 0, ins->dreg, 0);
3516 s390_st (code, s390_r1, 0, ins->dreg, 4);
3517 break;
3518 case OP_ICONST:
3519 case OP_SETREGIMM:
3520 if (s390_is_imm16(ins->inst_c0)) {
3521 s390_lhi (code, ins->dreg, ins->inst_c0);
3522 } else {
3523 s390_basr (code, s390_r13, 0);
3524 s390_j (code, 4);
3525 s390_word (code, ins->inst_c0);
3526 s390_l (code, ins->dreg, 0, s390_r13, 4);
3527 }
3528 break;
3529 case OP_AOTCONST:
3530 s390_basr (code, s390_r13, 0);
3531 s390_j (code, 4);
3532 mono_add_patch_info (cfg, code - cfg->native_code,
3533 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3534 s390_word (code, 0);
3535 s390_l (code,ins->dreg, 0, s390_r13, 4);
3536 break;
3537 case CEE_CONV_I4:
3538 case CEE_CONV_U4:
3539 case OP_MOVE:
3540 case OP_SETREG:
3541 if (ins->dreg != ins->sreg1) {
3542 s390_lr (code, ins->dreg, ins->sreg1);
3543 }
3544 break;
3545 case OP_SETLRET: {
3546 int saved = ins->sreg1;
3547 if (ins->sreg1 == s390_r2) {
3548 s390_lr (code, s390_r0, ins->sreg1);
3549 saved = s390_r0;
3550 }
3551 if (ins->sreg2 != s390_r2)
3552 s390_lr (code, s390_r2, ins->sreg2);
3553 if (saved != s390_r3)
3554 s390_lr (code, s390_r3, saved);
3555 break;
3556 }
3557 case OP_SETFREG:
3558 case OP_FMOVE:
3559 if (ins->dreg != ins->sreg1) {
3560 s390_ldr (code, ins->dreg, ins->sreg1);
3561 }
3562 break;
3563 case OP_FCONV_TO_R4:
3564 s390_ledbr (code, ins->dreg, ins->sreg1);
3565 break;
3566 case CEE_JMP:
3567 g_assert_not_reached ();
3568 break;
3569 case OP_CHECK_THIS:
3570 /* ensure ins->sreg1 is not NULL */
3571 s390_icm (code, s390_r0, 15, ins->sreg1, 0);
3572 break;
3573 case OP_FCALL:
3574 case OP_LCALL:
3575 case OP_VCALL:
3576 case OP_VOIDCALL:
3577 case CEE_CALL:
3578 call = (MonoCallInst*)ins;
3579 if (ins->flags & MONO_INST_HAS_METHOD)
3580 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD, call->method);
3581 else
3582 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS, call->fptr);
3583 s390_brasl (code, s390_r14, 0);
3584 break;
3585 case OP_FCALL_REG:
3586 case OP_LCALL_REG:
3587 case OP_VCALL_REG:
3588 case OP_VOIDCALL_REG:
3589 case OP_CALL_REG:
3590 s390_lr (code, s390_r1, ins->sreg1);
3591 s390_basr (code, s390_r14, s390_r1);
3592 break;
3593 case OP_FCALL_MEMBASE:
3594 case OP_LCALL_MEMBASE:
3595 case OP_VCALL_MEMBASE:
3596 case OP_VOIDCALL_MEMBASE:
3597 case OP_CALL_MEMBASE:
3598 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3599 s390_basr (code, s390_r14, s390_r1);
3600 break;
3601 case OP_OUTARG:
3602 g_assert_not_reached ();
3603 break;
3604 case OP_LOCALLOC:
3605 s390_lr (code, s390_r1, ins->sreg1);
3606 s390_ahi (code, s390_r1, 14);
3607 s390_srl (code, s390_r1, 0, 3);
3608 s390_sll (code, s390_r1, 0, 3);
3609 s390_l (code, s390_r13, 0, STK_BASE, 0);
3610 s390_lcr (code, s390_r1, s390_r1);
3611 s390_la (code, STK_BASE, STK_BASE, s390_r1, 0);
3612 s390_st (code, s390_r13, 0, STK_BASE, 0);
3613 s390_la (code, ins->dreg, 0, STK_BASE, S390_MINIMAL_STACK_SIZE+7);
3614 s390_srl (code, ins->dreg, 0, 3);
3615 s390_sll (code, ins->dreg, 0, 3);
3616 break;
3617 case CEE_RET:
3618 s390_br (code, s390_r14);
3619 break;
3620 case CEE_THROW: {
3621 s390_lr (code, s390_r2, ins->sreg1);
3622 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3623 (gpointer)"mono_arch_throw_exception");
3624 s390_brasl (code, s390_r14, 0);
3625 break;
3626 }
3627 case OP_START_HANDLER:
3628 s390_lr (code, s390_r0, s390_r14);
3629 s390_st (code, s390_r0, 0, ins->inst_left->inst_basereg, ins->inst_left->inst_offset);
3630 break;
3631 case OP_ENDFILTER:
3632 if (ins->sreg1 != s390_r2)
3633 s390_lr (code, s390_r2, ins->sreg1);
3634 s390_l (code, STK_BASE, 0, STK_BASE, 0);
3635 s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
3636 s390_br (code, s390_r14);
3637 break;
3638 case CEE_ENDFINALLY:
3639 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg, ins->inst_left->inst_offset);
3640 s390_br (code, s390_r14);
3641 break;
3642 case OP_CALL_HANDLER:
3643 mono_add_patch_info (cfg, code-cfg->native_code,
3644 MONO_PATCH_INFO_BB, ins->inst_target_bb);
3645 s390_brasl (code, s390_r14, 0);
3646 break;
3647 case OP_LABEL:
3648 ins->inst_c0 = code - cfg->native_code;
3649 break;
3650 case CEE_BR:
3651 EMIT_UNCOND_BRANCH(ins);
3652 break;
3653 case OP_BR_REG:
3654 s390_br (code, ins->sreg1);
3655 break;
3656 case OP_CEQ:
3657 s390_lhi (code, ins->dreg, 1);
3658 s390_jz (code, 4);
3659 s390_lhi (code, ins->dreg, 0);
3660 break;
3661 case OP_CLT:
3662 s390_lhi (code, ins->dreg, 1);
3663 s390_jl (code, 4);
3664 s390_lhi (code, ins->dreg, 0);
3665 break;
3666 case OP_CLT_UN:
3667 s390_lhi (code, ins->dreg, 1);
3668 s390_jlo (code, 4);
3669 s390_lhi (code, ins->dreg, 0);
3670 break;
3671 case OP_CGT:
3672 s390_lhi (code, ins->dreg, 1);
3673 s390_jh (code, 4);
3674 s390_lhi (code, ins->dreg, 0);
3675 break;
3676 case OP_CGT_UN:
3677 s390_lhi (code, ins->dreg, 1);
3678 s390_jho (code, 4);
3679 s390_lhi (code, ins->dreg, 0);
3680 break;
3681 case OP_COND_EXC_EQ:
3682 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
3683 break;
3684 case OP_COND_EXC_NE_UN:
3685 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
3686 break;
3687 case OP_COND_EXC_LT:
3688 case OP_COND_EXC_LT_UN:
3689 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
3690 break;
3691 case OP_COND_EXC_GT:
3692 case OP_COND_EXC_GT_UN:
3693 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
3694 break;
3695 case OP_COND_EXC_GE:
3696 case OP_COND_EXC_GE_UN:
3697 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
3698 break;
3699 case OP_COND_EXC_LE:
3700 case OP_COND_EXC_LE_UN:
3701 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
3702 break;
3703 case OP_COND_EXC_OV:
3704 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
3705 break;
3706 case OP_COND_EXC_NO:
3707 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
3708 break;
3709 case OP_COND_EXC_C:
3710 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
3711 break;
3712 case OP_COND_EXC_NC:
3713 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
3714 break;
3715 case CEE_BEQ:
3716 EMIT_COND_BRANCH (ins, S390_CC_EQ);
3717 break;
3718 case CEE_BNE_UN:
3719 EMIT_COND_BRANCH (ins, S390_CC_NE);
3720 break;
3721 case CEE_BLT:
3722 case CEE_BLT_UN:
3723 EMIT_COND_BRANCH (ins, S390_CC_LT);
3724 break;
3725 case CEE_BGT:
3726 case CEE_BGT_UN:
3727 EMIT_COND_BRANCH (ins, S390_CC_GT);
3728 break;
3729 case CEE_BGE:
3730 case CEE_BGE_UN:
3731 EMIT_COND_BRANCH (ins, S390_CC_GE);
3732 break;
3733 case CEE_BLE:
3734 case CEE_BLE_UN:
3735 EMIT_COND_BRANCH (ins, S390_CC_LE);
3736 break;
3737
3738 /* floating point opcodes */
3739 case OP_R8CONST:
3740 if (*((float *) ins->inst_p0) == 0) {
3741 s390_lzdr (code, ins->dreg);
3742 } else {
3743 s390_basr (code, s390_r13, 0);
3744 s390_j (code, 4);
3745 s390_word (code, ins->inst_p0);
3746 s390_l (code, s390_r13, 0, s390_r13, 4);
3747 s390_ld (code, ins->dreg, 0, s390_r13, 0);
3748 }
3749 break;
3750 case OP_R4CONST:
3751 if (*((float *) ins->inst_p0) == 0) {
3752 s390_lzer (code, ins->dreg);
3753 } else {
3754 s390_basr (code, s390_r13, 0);
3755 s390_j (code, 4);
3756 s390_word (code, ins->inst_p0);
3757 s390_l (code, s390_r13, 0, s390_r13, 4);
3758 s390_le (code, ins->dreg, 0, s390_r13, 0);
3759 s390_ldebr(code, ins->dreg, ins->dreg);
3760 }
3761 break;
3762 case OP_STORER8_MEMBASE_REG:
3763 if (s390_is_uimm12(ins->inst_offset)) {
3764 s390_std (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3765 } else {
3766 s390_basr (code, s390_r13, 0);
3767 s390_j (code, 4);
3768 s390_word (code, ins->inst_offset);
3769 s390_l (code, s390_r13, 0, s390_r13, 4);
3770 s390_std (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3771 }
3772 break;
3773 case OP_LOADR8_MEMBASE:
3774 if (s390_is_uimm12(ins->inst_offset)) {
3775 s390_ld (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3776 } else {
3777 s390_basr (code, s390_r13, 0);
3778 s390_j (code, 4);
3779 s390_word (code, ins->inst_offset);
3780 s390_l (code, s390_r13, 0, s390_r13, 4);
3781 s390_ld (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3782 }
3783 break;
3784 case OP_STORER4_MEMBASE_REG:
3785 if (s390_is_uimm12(ins->inst_offset)) {
3786 s390_ledbr(code, s390_f0, ins->sreg1);
3787 s390_ste (code, s390_f0, 0, ins->inst_destbasereg, ins->inst_offset);
3788 } else {
3789 s390_basr (code, s390_r13, 0);
3790 s390_j (code, 4);
3791 s390_word (code, ins->inst_offset);
3792 s390_l (code, s390_r13, 0, s390_r13, 4);
3793 s390_ledbr(code, s390_f0, ins->sreg1);
3794 s390_ste (code, s390_f0, s390_r13, ins->inst_destbasereg, 0);
3795 }
3796 break;
3797 case OP_LOADR4_MEMBASE:
3798 if (s390_is_uimm12(ins->inst_offset)) {
3799 s390_le (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3800 } else {
3801 s390_basr (code, s390_r13, 0);
3802 s390_j (code, 4);
3803 s390_word (code, ins->inst_offset);
3804 s390_l (code, s390_r13, 0, s390_r13, 4);
3805 s390_le (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3806 }
3807 s390_ldebr (code, ins->dreg, ins->dreg);
3808 break;
3809 case CEE_CONV_R_UN:
3810 s390_cdfbr (code, ins->dreg, ins->sreg1);
3811 s390_ltr (code, ins->sreg1, ins->sreg1);
3812 s390_jnl (code, 12);
3813 s390_basr (code, s390_r13, 0);
3814 s390_j (code, 6);
3815 s390_word (code, 0x41f00000);
3816 s390_word (code, 0);
3817 s390_adb (code, ins->dreg, 0, s390_r13, 4);
3818 break;
3819 case CEE_CONV_R4:
3820 s390_cefbr (code, ins->dreg, ins->sreg1);
3821 break;
3822 case CEE_CONV_R8:
3823 s390_cdfbr (code, ins->dreg, ins->sreg1);
3824 break;
3825 case OP_FCONV_TO_I1:
3826 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
3827 break;
3828 case OP_FCONV_TO_U1:
3829 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
3830 break;
3831 case OP_FCONV_TO_I2:
3832 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
3833 break;
3834 case OP_FCONV_TO_U2:
3835 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
3836 break;
3837 case OP_FCONV_TO_I4:
3838 case OP_FCONV_TO_I:
3839 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
3840 break;
3841 case OP_FCONV_TO_U4:
3842 case OP_FCONV_TO_U:
3843 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
3844 break;
3845 case OP_FCONV_TO_I8:
3846 case OP_FCONV_TO_U8:
3847 g_assert_not_reached ();
3848 /* Implemented as helper calls */
3849 break;
3850 case OP_LCONV_TO_R_UN:
3851 g_assert_not_reached ();
3852 /* Implemented as helper calls */
3853 break;
3854 case OP_LCONV_TO_OVF_I: {
3855 /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
3856 short int *o[5];
3857 s390_ltr (code, ins->sreg2, ins->sreg2);
3858 s390_jnl (code, 0); CODEPTR(code, o[0]);
3859 s390_ltr (code, ins->sreg1, ins->sreg1);
3860 s390_jnl (code, 0); CODEPTR(code, o[1]);
3861 s390_lhi (code, s390_r13, -1);
3862 s390_cr (code, ins->sreg1, s390_r13);
3863 s390_jnz (code, 0); CODEPTR(code, o[2]);
3864 if (ins->dreg != ins->sreg2)
3865 s390_lr (code, ins->dreg, ins->sreg2);
3866 s390_j (code, 0); CODEPTR(code, o[3]);
3867 PTRSLOT(code, o[0]);
3868 s390_jz (code, 0); CODEPTR(code, o[4]);
3869 PTRSLOT(code, o[1]);
3870 PTRSLOT(code, o[2]);
3871 mono_add_patch_info (cfg, code - cfg->native_code,
3872 MONO_PATCH_INFO_EXC, "OverflowException");
3873 s390_brasl (code, s390_r14, 0);
3874 PTRSLOT(code, o[3]);
3875 PTRSLOT(code, o[4]);
3876 break;
3877 }
3878 case OP_SQRT:
3879 s390_sqdbr (code, ins->dreg, ins->sreg1);
3880 break;
3881 case OP_FADD:
3882 if (ins->dreg == ins->sreg1)
3883 s390_adbr (code, ins->dreg, ins->sreg2);
3884 else {
3885 if (ins->dreg == ins->sreg2)
3886 s390_adbr (code, ins->dreg, ins->sreg1);
3887 else {
3888 s390_ldr (code, ins->dreg, ins->sreg1);
3889 s390_adbr (code, ins->dreg, ins->sreg2);
3890 }
3891 }
3892 break;
3893 case OP_FSUB:
3894 if (ins->dreg == ins->sreg1)
3895 s390_sdbr (code, ins->dreg, ins->sreg2);
3896 else {
3897 s390_ldr (code, ins->dreg, ins->sreg1);
3898 s390_sdbr (code, ins->dreg, ins->sreg2);
3899 }
3900 break;
3901 case OP_FMUL:
3902 if (ins->dreg == ins->sreg1)
3903 s390_mdbr (code, ins->dreg, ins->sreg2);
3904 else {
3905 if (ins->dreg == ins->sreg2)
3906 s390_mdbr (code, ins->dreg, ins->sreg1);
3907 else {
3908 s390_ldr (code, ins->dreg, ins->sreg1);
3909 s390_mdbr (code, ins->dreg, ins->sreg2);
3910 }
3911 }
3912 break;
3913 case OP_FDIV:
3914 if (ins->dreg == ins->sreg1)
3915 s390_ddbr (code, ins->dreg, ins->sreg2);
3916 else {
3917 s390_ldr (code, ins->dreg, ins->sreg1);
3918 s390_ddbr (code, ins->dreg, ins->sreg2);
3919 }
3920 break;
3921 case OP_FNEG:
3922 s390_lcdbr (code, ins->dreg, ins->sreg1);
3923 break;
3924 case OP_FREM:
3925 if (ins->dreg != ins->sreg1) {
3926 s390_ldr (code, ins->dreg, ins->sreg1);
3927 }
3928 s390_didbr (code, ins->dreg, ins->sreg2, 5, s390_f15);
3929 break;
3930 case OP_FCOMPARE:
3931 s390_cdbr (code, ins->sreg1, ins->sreg2);
3932 break;
3933 case OP_FCEQ:
3934 s390_cdbr (code, ins->sreg1, ins->sreg2);
3935 s390_lhi (code, ins->dreg, 1);
3936 s390_je (code, 4);
3937 s390_lhi (code, ins->dreg, 0);
3938 break;
3939 case OP_FCLT:
3940 s390_cdbr (code, ins->sreg1, ins->sreg2);
3941 s390_lhi (code, ins->dreg, 1);
3942 s390_jl (code, 4);
3943 s390_lhi (code, ins->dreg, 0);
3944 break;
3945 case OP_FCLT_UN:
3946 s390_cdbr (code, ins->sreg1, ins->sreg2);
3947 s390_lhi (code, ins->dreg, 1);
3948 s390_jlo (code, 4);
3949 s390_lhi (code, ins->dreg, 0);
3950 break;
3951 case OP_FCGT:
3952 s390_cdbr (code, ins->sreg1, ins->sreg2);
3953 s390_lhi (code, ins->dreg, 1);
3954 s390_jh (code, 4);
3955 s390_lhi (code, ins->dreg, 0);
3956 break;
3957 case OP_FCGT_UN:
3958 s390_cdbr (code, ins->sreg1, ins->sreg2);
3959 s390_lhi (code, ins->dreg, 1);
3960 s390_jho (code, 4);
3961 s390_lhi (code, ins->dreg, 0);
3962 break;
3963 case OP_FBEQ:
3964 EMIT_COND_BRANCH (ins, S390_CC_EQ|S390_CC_OV);
3965 break;
3966 case OP_FBNE_UN:
3967 EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
3968 break;
3969 case OP_FBLT:
3970 EMIT_COND_BRANCH (ins, S390_CC_LT);
3971 break;
3972 case OP_FBLT_UN:
3973 EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
3974 break;
3975 case OP_FBGT:
3976 EMIT_COND_BRANCH (ins, S390_CC_GT);
3977 break;
3978 case OP_FBGT_UN:
3979 EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
3980 break;
3981 case OP_FBGE:
3982 EMIT_COND_BRANCH (ins, S390_CC_GE);
3983 break;
3984 case OP_FBGE_UN:
3985 EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
3986 break;
3987 case OP_FBLE:
3988 EMIT_COND_BRANCH (ins, S390_CC_LE);
3989 break;
3990 case OP_FBLE_UN:
3991 EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
3992 break;
3993 case CEE_CKFINITE: {
3994 short *o;
3995 s390_lhi (code, s390_r13, 0xfc0);
3996 s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
3997 s390_jz (code, 0); CODEPTR(code, o);
3998 mono_add_patch_info (cfg, code - cfg->native_code + 2,
3999 MONO_PATCH_INFO_EXC, "ArithmeticException");
4000 s390_brasl (code, s390_r14,0);
4001 PTRSLOT(code, o);
4002 break;
4003 }
4004 default:
4005 g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
4006 g_assert_not_reached ();
4007 }
4008
4009 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
4010 g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %d)",
4011 mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
4012 g_assert_not_reached ();
4013 }
4014
4015 cpos += max_len;
4016
4017 last_ins = ins;
4018 last_offset = offset;
4019
4020 ins = ins->next;
4021 }
4022
4023 cfg->code_len = code - cfg->native_code;
4024 }
4025
4026 /*========================= End of Function ========================*/
4027
4028 /*------------------------------------------------------------------*/
4029 /* */
4030 /* Name - mono_arch_register_lowlevel_calls */
4031 /* */
4032 /* Function - Register routines to help with --trace operation. */
4033 /* */
4034 /*------------------------------------------------------------------*/
4035
4036 void
4037 mono_arch_register_lowlevel_calls (void)
4038 {
4039 mono_register_jit_icall (enter_method, "mono_enter_method", NULL, TRUE);
4040 mono_register_jit_icall (leave_method, "mono_leave_method", NULL, TRUE);
4041 }
4042
4043 /*========================= End of Function ========================*/
4044
4045 /*------------------------------------------------------------------*/
4046 /* */
4047 /* Name - mono_arch_patch_code */
4048 /* */
4049 /* Function - Process the patch data created during the */
4050 /* instruction build process. This resolves jumps, */
4051 /* calls, variables etc. */
4052 /* */
4053 /*------------------------------------------------------------------*/
4054
4055 void
4056 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain, guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4057 {
4058 MonoJumpInfo *patch_info;
4059
4060 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4061 unsigned char *ip = patch_info->ip.i + code;
4062 gint32 target = 0;
4063
4064 switch (patch_info->type) {
4065 case MONO_PATCH_INFO_BB:
4066 target = S390_RELATIVE((patch_info->data.bb->native_offset+code),
4067 ip);
4068 ip += 2; /* Skip over op-code */
4069 break;
4070 case MONO_PATCH_INFO_ABS:
4071 target = S390_RELATIVE(patch_info->data.target, ip);
4072 ip += 2; /* Skip over op-code */
4073 break;
4074 case MONO_PATCH_INFO_LABEL:
4075 target = S390_RELATIVE((patch_info->data.inst->inst_c0+code),ip);
4076 ip += 2; /* Skip over op-code */
4077 break;
4078 case MONO_PATCH_INFO_IP:
4079 target = ip;
4080 continue;
4081 case MONO_PATCH_INFO_METHOD_REL:
4082 g_assert_not_reached ();
4083 *((gpointer *)(ip)) = code + patch_info->data.offset;
4084 continue;
4085 case MONO_PATCH_INFO_INTERNAL_METHOD: {
4086 MonoJitICallInfo *mi = mono_find_jit_icall_by_name (patch_info->data.name);
4087 if (!mi) {
4088 g_warning ("unknown MONO_PATCH_INFO_INTERNAL_METHOD %s", patch_info->data.name);
4089 g_assert_not_reached ();
4090 }
4091 target = S390_RELATIVE(mono_icall_get_wrapper (mi), ip);
4092 ip += 2; /* Skip over op-code */
4093 break;
4094 }
4095 case MONO_PATCH_INFO_METHOD_JUMP:
4096 g_assert_not_reached ();
4097 break;
4098 case MONO_PATCH_INFO_METHOD:
4099 if (patch_info->data.method == method) {
4100 target = S390_RELATIVE(code, ip);
4101 } else {
4102 /* get the trampoline to the method from the domain */
4103 target = S390_RELATIVE(mono_arch_create_jit_trampoline (patch_info->data.method), ip);
4104 target = mono_arch_create_jit_trampoline(patch_info->data.method);
4105 target = S390_RELATIVE(target, ip);
4106 }
4107 ip += 2; /* Skip over op-code */
4108 break;
4109 case MONO_PATCH_INFO_SWITCH: {
4110 gpointer *table = (gpointer *)patch_info->data.target;
4111 int i;
4112 /*------------------------------------------------------*/
4113 /* ip is pointing at the basr r13,0/j +4 instruction */
4114 /* the vtable value follows this (i.e. ip+6) */
4115 /*------------------------------------------------------*/
4116 *((gconstpointer *)(ip+6)) = table;
4117
4118 for (i = 0; i < patch_info->table_size; i++) {
4119 table [i] = (int)patch_info->data.table [i] + code;
4120 }
4121 continue;
4122 }
4123 case MONO_PATCH_INFO_METHODCONST:
4124 case MONO_PATCH_INFO_CLASS:
4125 case MONO_PATCH_INFO_IMAGE:
4126 case MONO_PATCH_INFO_FIELD:
4127 target = S390_RELATIVE(patch_info->data.target, ip);
4128 continue;
4129 case MONO_PATCH_INFO_R4:
4130 case MONO_PATCH_INFO_R8:
4131 g_assert_not_reached ();
4132 *((gconstpointer *)(ip + 2)) = patch_info->data.target;
4133 continue;
4134 case MONO_PATCH_INFO_IID:
4135 mono_class_init (patch_info->data.klass);
4136 target = S390_RELATIVE(patch_info->data.klass->interface_id, ip);
4137 continue;
4138 case MONO_PATCH_INFO_VTABLE:
4139 target = S390_RELATIVE(mono_class_vtable (domain, patch_info->data.klass),ip);
4140 ip += 2;
4141 continue;
4142 case MONO_PATCH_INFO_CLASS_INIT:
4143 target = S390_RELATIVE(mono_create_class_init_trampoline (mono_class_vtable (domain, patch_info->data.klass)), ip);
4144 ip += 2;
4145 break;
4146 case MONO_PATCH_INFO_SFLDA: {
4147 MonoVTable *vtable = mono_class_vtable (domain, patch_info->data.field->parent);
4148 if (!vtable->initialized && !(vtable->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) && mono_class_needs_cctor_run (vtable->klass, method))
4149 /* Done by the generated code */
4150 ;
4151 else {
4152 if (run_cctors)
4153 mono_runtime_class_init (vtable);
4154 }
4155 target = S390_RELATIVE((char*)vtable->data + patch_info->data.field->offset, ip);
4156 ip += 2;
4157 continue;
4158 }
4159 case MONO_PATCH_INFO_EXC_NAME:
4160 *((gconstpointer *)(ip)) = patch_info->data.name;
4161 continue;
4162 case MONO_PATCH_INFO_LDSTR:
4163 target = mono_ldstr (domain, patch_info->data.token->image,
4164 mono_metadata_token_index (patch_info->data.token->token));
4165 continue;
4166 case MONO_PATCH_INFO_TYPE_FROM_HANDLE: {
4167 gpointer handle;
4168 MonoClass *handle_class;
4169
4170 handle = mono_ldtoken (patch_info->data.token->image,
4171 patch_info->data.token->token,
4172 &handle_class, NULL);
4173 mono_class_init (handle_class);
4174 mono_class_init (mono_class_from_mono_type (handle));
4175
4176 target = handle;
4177 continue;
4178 }
4179 case MONO_PATCH_INFO_LDTOKEN: {
4180 gpointer handle;
4181 MonoClass *handle_class;
4182
4183 handle = mono_ldtoken (patch_info->data.token->image,
4184 patch_info->data.token->token,
4185 &handle_class, NULL);
4186 mono_class_init (handle_class);
4187
4188 target = handle;
4189 continue;
4190 }
4191 case MONO_PATCH_INFO_EXC:
4192 /* everything is dealt with at epilog output time */
4193 continue;
4194 default:
4195 g_assert_not_reached ();
4196 }
4197 s390_patch (ip, target);
4198 }
4199 }
4200
4201 /*========================= End of Function ========================*/
4202
4203 /*------------------------------------------------------------------*/
4204 /* */
4205 /* Name - mono_arch_max_epilog_size */
4206 /* */
4207 /* Function - Determine the maximum size of the epilog code. */
4208 /* */
4209 /*------------------------------------------------------------------*/
4210
4211 int
4212 mono_arch_max_epilog_size (MonoCompile *cfg)
4213 {
4214 int max_epilog_size = 96;
4215 MonoJumpInfo *patch_info;
4216
4217 if (cfg->method->save_lmf)
4218 max_epilog_size += 128;
4219
4220 if (mono_jit_trace_calls != NULL)
4221 max_epilog_size += 128;
4222
4223 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
4224 max_epilog_size += 128;
4225
4226 /* count the number of exception infos */
4227
4228 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4229 if (patch_info->type == MONO_PATCH_INFO_EXC)
4230 max_epilog_size += 26;
4231 }
4232
4233 return max_epilog_size;
4234 }
4235
4236 /*========================= End of Function ========================*/
4237
4238 /*------------------------------------------------------------------*/
4239 /* */
4240 /* Name - mono_arch_emit_prolog */
4241 /* */
4242 /* Function - Create the instruction sequence for a function */
4243 /* prolog. */
4244 /* */
4245 /*------------------------------------------------------------------*/
4246
4247 guint8 *
4248 mono_arch_emit_prolog (MonoCompile *cfg)
4249 {
4250 MonoMethod *method = cfg->method;
4251 MonoBasicBlock *bb;
4252 MonoMethodSignature *sig;
4253 MonoInst *inst;
4254 int alloc_size, pos, max_offset, i, lmfOffset;
4255 guint8 *code;
4256 CallInfo *cinfo;
4257 size_data sz;
4258 int tracing = 0;
4259
4260 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
4261 tracing = 1;
4262
4263 cfg->code_size = 256;
4264 cfg->native_code = code = g_malloc (cfg->code_size);
4265
4266 s390_stm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4267
4268 if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
4269 cfg->used_int_regs |= 1 << 11;
4270 }
4271
4272 alloc_size = cfg->stack_offset;
4273 // if (tracing)
4274 // alloc_size += S390_TRACE_STACK_SIZE;
4275 // pos = 0;
4276 /* reserve room to save return value */
4277 // if (tracing)
4278 // pos += 8;
4279
4280 // alloc_size += pos;
4281
4282 // if (method->save_lmf)
4283 // alloc_size += sizeof(MonoLMF);
4284
4285 // alloc_size = S390_ALIGN(alloc_size, S390_STACK_ALIGNMENT);
4286
4287 cfg->stack_usage = alloc_size;
4288 s390_lr (code, s390_r11, STK_BASE);
4289 if (s390_is_imm16 (-alloc_size)) {
4290 s390_ahi (code, STK_BASE, -alloc_size);
4291 } else {
4292 int stackSize = alloc_size;
4293 while (stackSize > 32767) {
4294 s390_ahi (code, STK_BASE, -32767);
4295 stackSize -= 32767;
4296 }
4297 s390_ahi (code, STK_BASE, -stackSize);
4298 }
4299 s390_st (code, s390_r11, 0, STK_BASE, 0);
4300
4301 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
4302 s390_lr (code, s390_r11, STK_BASE);
4303
4304 /* compute max_offset in order to use short forward jumps
4305 * we always do it on s390 because the immediate displacement
4306 * for jumps is too small
4307 */
4308 max_offset = 0;
4309 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
4310 MonoInst *ins = bb->code;
4311 bb->max_offset = max_offset;
4312
4313 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
4314 max_offset += 6;
4315
4316 while (ins) {
4317 max_offset += ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
4318 ins = ins->next;
4319 }
4320 }
4321
4322 /* load arguments allocated to register from the stack */
4323 sig = method->signature;
4324 pos = 0;
4325
4326 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4327
4328 if (cinfo->struct_ret) {
4329 ArgInfo *ainfo = &cinfo->ret;
4330 inst = cfg->ret;
4331 inst->unused = ainfo->vtsize;
4332 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4333 }
4334
4335 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4336 ArgInfo *ainfo = cinfo->args + i;
4337 inst = cfg->varinfo [pos];
4338
4339 if (inst->opcode == OP_REGVAR) {
4340 if (ainfo->regtype == RegTypeGeneral)
4341 s390_lr (code, inst->dreg, ainfo->reg);
4342 else if (ainfo->regtype == RegTypeFP) {
4343 if (ainfo->size == 4) {
4344 s390_ledbr (code, inst->dreg, ainfo->reg);
4345 } else {
4346 s390_ldr (code, inst->dreg, ainfo->reg);
4347 }
4348 }
4349 else if (ainfo->regtype == RegTypeBase) {
4350 s390_lr (code, s390_r13, STK_BASE);
4351 s390_ahi (code, s390_r13, alloc_size);
4352 s390_l (code, inst->dreg, 0, s390_r13, ainfo->offset);
4353 } else
4354 g_assert_not_reached ();
4355
4356 if (cfg->verbose_level > 2)
4357 g_print ("Argument %d assigned to register %s\n",
4358 pos, mono_arch_regname (inst->dreg));
4359 } else {
4360 if (ainfo->regtype == RegTypeGeneral) {
4361 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4362 g_assert_not_reached();
4363 switch (ainfo->size) {
4364 case 1:
4365 s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4366 break;
4367 case 2:
4368 s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4369 break;
4370 case 8:
4371 s390_stm (code, ainfo->reg, ainfo->reg + 1,
4372 inst->inst_basereg, inst->inst_offset);
4373 break;
4374 default:
4375 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4376 }
4377 } else if (ainfo->regtype == RegTypeBase) {
4378 } else if (ainfo->regtype == RegTypeFP) {
4379 if (ainfo->size == 8)
4380 s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4381 else if (ainfo->size == 4)
4382 s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4383 else
4384 g_assert_not_reached ();
4385 } else if (ainfo->regtype == RegTypeStructByVal) {
4386 int doffset = inst->inst_offset;
4387 int reg;
4388 if (ainfo->reg != STK_BASE)
4389 reg = ainfo->reg;
4390 else {
4391 reg = s390_r0;
4392 s390_lr (code, s390_r13, STK_BASE);
4393 s390_ahi (code, s390_r13, alloc_size);
4394 }
4395 switch (ainfo->size) {
4396 case 1:
4397 if (ainfo->reg == STK_BASE)
4398 s390_ic (code, reg, 0, s390_r13, ainfo->offset+3);
4399 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
4400 break;
4401 case 2:
4402 if (ainfo->reg == STK_BASE)
4403 s390_lh (code, reg, 0, s390_r13, ainfo->offset+2);
4404 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
4405 break;
4406 case 4:
4407 if (ainfo->reg == STK_BASE)
4408 s390_l (code, reg, 0, s390_r13, ainfo->offset);
4409 s390_st (code, reg, 0, inst->inst_basereg, doffset);
4410 break;
4411 case 8:
4412 if (ainfo->reg == STK_BASE)
4413 s390_lm (code, s390_r0, s390_r1, s390_r13, ainfo->offset);
4414 s390_stm (code, reg, reg+1, inst->inst_basereg, doffset);
4415 break;
4416 }
4417 } else if (ainfo->regtype == RegTypeStructByAddr) {
4418 code = emit_memcpy (code, ainfo->vtsize,
4419 inst->inst_basereg, inst->inst_offset, ainfo->reg, 0);
4420 } else
4421 g_assert_not_reached ();
4422 }
4423 pos++;
4424 }
4425
4426 if (method->save_lmf) {
4427 /*---------------------------------------------------------------*/
4428 /* Preserve the parameter registers while we fix up the lmf */
4429 /*---------------------------------------------------------------*/
4430 s390_lr (code, s390_r7, s390_r2);
4431 s390_lr (code, s390_r8, s390_r3);
4432 s390_lr (code, s390_r9, s390_r4);
4433 s390_lr (code, s390_r10, s390_r5);
4434
4435 mono_add_patch_info (cfg, code - cfg->native_code,
4436 MONO_PATCH_INFO_INTERNAL_METHOD,
4437 (gpointer)"mono_get_lmf_addr");
4438 /*---------------------------------------------------------------*/
4439 /* On return from this call r2 have the address of the &lmf */
4440 /*---------------------------------------------------------------*/
4441 s390_brasl (code, s390_r14, 0);
4442
4443 /*---------------------------------------------------------------*/
4444 /* we build the MonoLMF structure on the stack - see mini-s390.h */
4445 /*---------------------------------------------------------------*/
4446 lmfOffset = alloc_size - sizeof(MonoLMF);
4447
4448 s390_lr (code, s390_r13, cfg->frame_reg);
4449 s390_ahi (code, s390_r13, lmfOffset);
4450
4451 /*---------------------------------------------------------------*/
4452 /* Set lmf.lmf_addr = jit_tls->lmf */
4453 /*---------------------------------------------------------------*/
4454 s390_st (code, s390_r2, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4455
4456 /*---------------------------------------------------------------*/
4457 /* Get current lmf */
4458 /*---------------------------------------------------------------*/
4459 s390_l (code, s390_r0, 0, s390_r2, 0);
4460
4461 /*---------------------------------------------------------------*/
4462 /* Set our lmf as the current lmf */
4463 /*---------------------------------------------------------------*/
4464 s390_st (code, s390_r13, 0, s390_r2, 0);
4465
4466 /*---------------------------------------------------------------*/
4467 /* Have our lmf.previous_lmf point to the last lmf */
4468 /*---------------------------------------------------------------*/
4469 s390_st (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4470
4471 /*---------------------------------------------------------------*/
4472 /* save method info */
4473 /*---------------------------------------------------------------*/
4474 s390_basr (code, s390_r1, 0);
4475 s390_j (code, 4);
4476 s390_word (code, method);
4477 s390_l (code, s390_r1, 0, s390_r1, 4);
4478 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, method));
4479
4480 /*---------------------------------------------------------------*/
4481 /* save the current IP */
4482 /*---------------------------------------------------------------*/
4483 s390_lr (code, s390_r1, cfg->frame_reg);
4484 // s390_ahi (code, s390_r1, alloc_size);
4485 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
4486 s390_l (code, s390_r1, 0, s390_r1, S390_RET_ADDR_OFFSET);
4487 s390_la (code, s390_r1, 0, s390_r1, 0);
4488 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
4489
4490 /*---------------------------------------------------------------*/
4491 /* Save general and floating point registers */
4492 /*---------------------------------------------------------------*/
4493 s390_stm (code, s390_r2, s390_r6, s390_r13, G_STRUCT_OFFSET(MonoLMF, gregs[2]));
4494 for (i = 0; i < 16; i++) {
4495 s390_std (code, i, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, fregs[i]));
4496 }
4497
4498 /*---------------------------------------------------------------*/
4499 /* Restore the parameter registers now that we've set up the lmf */
4500 /*---------------------------------------------------------------*/
4501 s390_lr (code, s390_r2, s390_r7);
4502 s390_lr (code, s390_r3, s390_r8);
4503 s390_lr (code, s390_r4, s390_r9);
4504 s390_lr (code, s390_r5, s390_r10);
4505 }
4506
4507 if (tracing)
4508 code = mono_arch_instrument_prolog (cfg, enter_method, code, TRUE);
4509
4510 cfg->code_len = code - cfg->native_code;
4511 g_free (cinfo);
4512
4513 return code;
4514 }
4515
4516 /*========================= End of Function ========================*/
4517
4518 /*------------------------------------------------------------------*/
4519 /* */
4520 /* Name - mono_arch_emit_epilog */
4521 /* */
4522 /* Function - Emit the instructions for a function epilog. */
4523 /* */
4524 /*------------------------------------------------------------------*/
4525
4526 void
4527 mono_arch_emit_epilog (MonoCompile *cfg)
4528 {
4529 MonoJumpInfo *patch_info;
4530 MonoMethod *method = cfg->method;
4531 MonoMethodSignature *sig = method->signature;
4532 MonoInst *inst;
4533 int i, lmfOffset, tracing = 0;
4534 guint8 *code;
4535
4536 code = cfg->native_code + cfg->code_len;
4537
4538 if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
4539 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
4540 tracing = 1;
4541 }
4542
4543 if (method->save_lmf) {
4544 s390_lr (code, s390_r13, cfg->frame_reg);
4545
4546 lmfOffset = cfg->stack_usage - sizeof(MonoLMF);
4547
4548 /*-------------------------------------------------*/
4549 /* r13 = my lmf */
4550 /*-------------------------------------------------*/
4551 s390_ahi (code, s390_r13, lmfOffset);
4552
4553 /*-------------------------------------------------*/
4554 /* r6 = &jit_tls->lmf */
4555 /*-------------------------------------------------*/
4556 s390_l (code, s390_r6, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4557
4558 /*-------------------------------------------------*/
4559 /* r0 = lmf.previous_lmf */
4560 /*-------------------------------------------------*/
4561 s390_l (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4562
4563 /*-------------------------------------------------*/
4564 /* jit_tls->lmf = previous_lmf */
4565 /*-------------------------------------------------*/
4566 s390_l (code, s390_r13, 0, s390_r6, 0);
4567 s390_st (code, s390_r0, 0, s390_r6, 0);
4568 }
4569
4570 if (cfg->frame_reg != STK_BASE)
4571 s390_lr (code, STK_BASE, cfg->frame_reg);
4572
4573 s390_ahi (code, STK_BASE, cfg->stack_usage);
4574 s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4575 s390_br (code, s390_r14);
4576
4577 /* add code to raise exceptions */
4578 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4579 switch (patch_info->type) {
4580 case MONO_PATCH_INFO_EXC: {
4581 /*-----------------------------------------------------*/
4582 /* Patch the branch in epilog to come here */
4583 /*-----------------------------------------------------*/
4584 s390_patch (patch_info->ip.i+cfg->native_code+2,
4585 S390_RELATIVE(code,patch_info->ip.i+cfg->native_code));
4586 /*-----------------------------------------------------*/
4587 /* Patch the parameter passed to the handler */
4588 /*-----------------------------------------------------*/
4589 s390_basr (code, s390_r13, 0);
4590 s390_j (code, 4);
4591 mono_add_patch_info (cfg, code - cfg->native_code,
4592 MONO_PATCH_INFO_EXC_NAME,
4593 patch_info->data.target);
4594 s390_word (code, 0);
4595 /*-----------------------------------------------------*/
4596 /* Load the return address and the parameter register */
4597 /*-----------------------------------------------------*/
4598 s390_larl (code, s390_r14, S390_RELATIVE((patch_info->ip.i +
4599 cfg->native_code + 8), code));
4600 s390_l (code, s390_r2, 0, s390_r13, 4);
4601 /*-----------------------------------------------------*/
4602 /* Reuse the current patch to set the jump */
4603 /*-----------------------------------------------------*/
4604 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
4605 patch_info->data.name = "mono_arch_throw_exception_by_name";
4606 patch_info->ip.i = code - cfg->native_code;
4607 s390_jcl (code, S390_CC_UN, 0);
4608 break;
4609 }
4610 default:
4611 /* do nothing */
4612 break;
4613 }
4614 }
4615
4616 cfg->code_len = code - cfg->native_code;
4617
4618 g_assert (cfg->code_len < cfg->code_size);
4619
4620 }
4621
4622 /*========================= End of Function ========================*/
4623
4624 /*------------------------------------------------------------------*/
4625 /* */
4626 /* Name - mono_arch_setup_jit_tls_data */
4627 /* */
4628 /* Function - Setup the JIT's Thread Level Specific Data. */
4629 /* */
4630 /*------------------------------------------------------------------*/
4631
4632 void
4633 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
4634 {
4635 }
4636
4637 /*========================= End of Function ========================*/
4638
4639 /*------------------------------------------------------------------*/
4640 /* */
4641 /* Name - mono_arch_free_jit_tls_data */
4642 /* */
4643 /* Function - Free tls data. */
4644 /* */
4645 /*------------------------------------------------------------------*/
4646
4647 void
4648 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
4649 {
4650 }
4651
4652 /*========================= End of Function ========================*/
4653
4654 /*------------------------------------------------------------------*/
4655 /* */
4656 /* Name - mono_arch_emit_this_vret_args */
4657 /* */
4658 /* Function - */
4659 /* */
4660 /*------------------------------------------------------------------*/
4661
4662 void
4663 mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_reg, int this_type, int vt_reg)
4664 {
4665 int this_dreg = s390_r2;
4666
4667 if (vt_reg != -1)
4668 this_dreg = s390_r3;
4669
4670 /* add the this argument */
4671 if (this_reg != -1) {
4672 MonoInst *this;
4673 MONO_INST_NEW (cfg, this, OP_SETREG);
4674 this->type = this_type;
4675 this->sreg1 = this_reg;
4676 this->dreg = this_dreg;
4677 mono_bblock_add_inst (cfg->cbb, this);
4678 }
4679
4680 if (vt_reg != -1) {
4681 MonoInst *vtarg;
4682 MONO_INST_NEW (cfg, vtarg, OP_SETREG);
4683 vtarg->type = STACK_MP;
4684 vtarg->sreg1 = vt_reg;
4685 vtarg->dreg = s390_r2;
4686 mono_bblock_add_inst (cfg->cbb, vtarg);
4687 }
4688 }
4689
4690 /*========================= End of Function ========================*/
4691
4692 /*------------------------------------------------------------------*/
4693 /* */
4694 /* Name - mono_arch_get_opcode_for_method */
4695 /* */
4696 /* Function - Check for opcodes we can handle directly in */
4697 /* hardware. */
4698 /* */
4699 /*------------------------------------------------------------------*/
4700
4701 gint
4702 mono_arch_get_opcode_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4703 {
4704 if (cmethod->klass == mono_defaults.math_class) {
4705 if (strcmp (cmethod->name, "Sqrt") == 0)
4706 return OP_SQRT;
4707 }
4708 return -1;
4709 }
4710
4711 /*========================= End of Function ========================*/
4712
4713 /*------------------------------------------------------------------*/
4714 /* */
4715 /* Name - mono_arch_print_tree */
4716 /* */
4717 /* Function - Print platform-specific opcode details. */
4718 /* */
4719 /* Returns - 1 - opcode details have been printed */
4720 /* 0 - opcode details have not been printed */
4721 /* */
4722 /*------------------------------------------------------------------*/
4723
4724 gboolean
4725 mono_arch_print_tree (MonoInst *tree, int arity)
4726 {
4727 gboolean done;
4728
4729 switch (tree->opcode) {
4730 case OP_S390_LOADARG:
4731 case OP_S390_ARGPTR:
4732 case OP_S390_STKARG:
4733 printf ("[0x%x(%s)]", tree->inst_offset,
4734 mono_arch_regname (tree->inst_basereg));
4735 done = 1;
4736 break;
4737 default:
4738 done = 0;
4739 }
4740 return (done);
4741 }
4742
4743 /*========================= End of Function ========================*/
4744
4745 /*------------------------------------------------------------------*/
4746 /* */
4747 /* Name - mono_arch_regalloc_cost */
4748 /* */
4749 /* Function - Determine the cost, in the number of memory */
4750 /* references, of the action of allocating the var- */
4751 /* iable VMV into a register during global register */
4752 /* allocation. */
4753 /* */
4754 /* Returns - Cost */
4755 /* */
4756 /*------------------------------------------------------------------*/
4757
4758 guint32
4759 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
4760 {
4761 /* FIXME: */
4762 return 3;
4763 }
4764
4765 /*========================= End of Function ========================*/
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