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Fix local variable allocation logic
[mono.git] / mono / mini / mini-s390.c
blobabb2712bf9442a6d49be481888cddb2b08050cd6
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\n", __builtin_return_address (1));
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 }
1322
1323 curinst = m->locals_start;
1324 for (iVar = curinst; iVar < m->num_varinfo; ++iVar) {
1325 inst = m->varinfo [iVar];
1326 if (inst->opcode == OP_REGVAR)
1327 continue;
1328
1329 /* inst->unused indicates native sized value types, this is used by the
1330 * pinvoke wrappers when they call functions returning structure */
1331 if (inst->unused && MONO_TYPE_ISSTRUCT (inst->inst_vtype))
1332 size = mono_class_native_size (inst->inst_vtype->data.klass, &align);
1333 else
1334 size = mono_type_size (inst->inst_vtype, &align);
1335
1336 offset = S390_ALIGN(offset, align);
1337 inst->inst_offset = offset;
1338 inst->opcode = OP_REGOFFSET;
1339 inst->inst_basereg = frame_reg;
1340 offset += size;
1341 //DEBUG (g_print("allocating local %d to %d\n", iVar, inst->inst_offset));
1342 }
1343
1344 if (sig->hasthis)
1345 curinst = sArg = 1;
1346 else
1347 curinst = sArg = 0;
1348
1349 eArg = sig->param_count + sArg;
1350
1351 for (iParm = sArg; iParm < eArg; ++iParm) {
1352 inst = m->varinfo [curinst];
1353 if (inst->opcode != OP_REGVAR) {
1354 if (cinfo->args[iParm].regtype == RegTypeStructByVal) {
1355 if (cinfo->args[iParm].vtsize != 0) {
1356 inst->opcode = OP_S390_LOADARG;
1357 inst->inst_basereg = frame_reg;
1358 size = sizeof(long);
1359 offset = S390_ALIGN(offset, size);
1360 inst->inst_offset = offset;
1361 } else {
1362 inst->opcode = OP_S390_ARGPTR;
1363 inst->inst_basereg = frame_reg;
1364 size = cinfo->args[iParm].size;
1365 offset = S390_ALIGN(offset, size);
1366 inst->inst_offset = offset;
1367 }
1368 } else {
1369 if (cinfo->args[iParm].reg != STK_BASE) {
1370 inst->opcode = OP_REGOFFSET;
1371 inst->inst_basereg = frame_reg;
1372 size = (cinfo->args[iParm].size < 8
1373 ? sizeof(long)
1374 : sizeof(long long));
1375 offset = S390_ALIGN(offset, size);
1376 inst->inst_offset = offset;
1377 } else {
1378 inst->opcode = OP_S390_STKARG;
1379 inst->inst_basereg = frame_reg;
1380 size = (cinfo->args[iParm].size < 4
1381 ? 4 - cinfo->args[iParm].size
1382 : 0);
1383 inst->inst_offset = cinfo->args[iParm].offset +
1384 size;
1385 // inst->unused = stackOffset;
1386 inst->unused = 0;
1387 size = sizeof(long);
1388 }
1389 }
1390 offset += size;
1391 }
1392 curinst++;
1393 }
1394
1395 /*------------------------------------------------------*/
1396 /* Allow space for the trace method stack area if needed*/
1397 /*------------------------------------------------------*/
1398 if (mono_jit_trace_calls != NULL && mono_trace_eval (m))
1399 offset += S390_TRACE_STACK_SIZE;
1400
1401 /*------------------------------------------------------*/
1402 /* Reserve space to save LMF and caller saved registers */
1403 /*------------------------------------------------------*/
1404 if (m->method->save_lmf)
1405 offset += sizeof (MonoLMF);
1406
1407 /*------------------------------------------------------*/
1408 /* align the offset */
1409 /*------------------------------------------------------*/
1410 m->stack_offset = S390_ALIGN(offset, S390_STACK_ALIGNMENT);
1411
1412 }
1413
1414 /*========================= End of Function ========================*/
1415
1416 /*------------------------------------------------------------------*/
1417 /* */
1418 /* Name - mono_arch_call_opcode */
1419 /* */
1420 /* Function - Take the arguments and generate the arch-specific */
1421 /* instructions to properly call the function. This */
1422 /* includes pushing, moving argments to the correct */
1423 /* etc. */
1424 /* */
1425 /* Note - FIXME: We need an alignment solution for */
1426 /* enter_method and mono_arch_call_opcode, currently */
1427 /* alignment in mono_arch_call_opcode is computed */
1428 /* without arch_get_argument_info. */
1429 /* */
1430 /*------------------------------------------------------------------*/
1431
1432 MonoCallInst*
1433 mono_arch_call_opcode (MonoCompile *cfg, MonoBasicBlock* bb, MonoCallInst *call, int is_virtual) {
1434 MonoInst *arg, *in;
1435 MonoMethodSignature *sig;
1436 int i, n, lParamArea;
1437 CallInfo *cinfo;
1438 ArgInfo *ainfo;
1439 size_data sz;
1440
1441 sig = call->signature;
1442 n = sig->param_count + sig->hasthis;
1443
1444 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
1445 if (cinfo->struct_ret)
1446 call->used_iregs |= 1 << cinfo->struct_ret;
1447
1448 for (i = 0; i < n; ++i) {
1449 ainfo = cinfo->args + i;
1450 if (is_virtual && i == 0) {
1451 /* the argument will be attached to the call instrucion */
1452 in = call->args [i];
1453 call->used_iregs |= 1 << ainfo->reg;
1454 } else {
1455 MONO_INST_NEW (cfg, arg, OP_OUTARG);
1456 in = call->args [i];
1457 arg->cil_code = in->cil_code;
1458 arg->inst_left = in;
1459 arg->type = in->type;
1460 /* prepend, we'll need to reverse them later */
1461 arg->next = call->out_args;
1462 call->out_args = arg;
1463 if (ainfo->regtype == RegTypeGeneral) {
1464 arg->unused = ainfo->reg;
1465 call->used_iregs |= 1 << ainfo->reg;
1466 if (arg->type == STACK_I8)
1467 call->used_iregs |= 1 << (ainfo->reg + 1);
1468 } else if (ainfo->regtype == RegTypeStructByAddr) {
1469 arg->unused = ainfo->reg;
1470 call->used_iregs |= 1 << ainfo->reg;
1471 } else if (ainfo->regtype == RegTypeStructByVal) {
1472 if (ainfo->reg != STK_BASE) {
1473 switch (ainfo->size) {
1474 case 0:
1475 case 1:
1476 case 2:
1477 case 4:
1478 call->used_iregs |= 1 << ainfo->reg;
1479 break;
1480 case 8:
1481 call->used_iregs |= 1 << ainfo->reg;
1482 call->used_iregs |= 1 << (ainfo->reg+1);
1483 break;
1484 }
1485 }
1486 arg->sreg2 = ainfo->reg;
1487 arg->opcode = OP_OUTARG_VT;
1488 if (ainfo->vtsize != 0)
1489 arg->unused = -ainfo->vtsize;
1490 else
1491 arg->unused = ainfo->size;
1492 arg->inst_imm = ainfo->offset;
1493 arg->sreg1 = ainfo->offparm;
1494 } else if (ainfo->regtype == RegTypeBase) {
1495 arg->opcode = OP_OUTARG;
1496 arg->unused = ainfo->reg | (ainfo->size << 8);
1497 arg->inst_imm = ainfo->offset;
1498 } else if (ainfo->regtype == RegTypeFP) {
1499 arg->opcode = OP_OUTARG_R8;
1500 arg->unused = ainfo->reg;
1501 call->used_fregs |= 1 << ainfo->reg;
1502 if (ainfo->size == 4) {
1503 /* we reduce the precision */
1504 MonoInst *conv;
1505 MONO_INST_NEW (cfg, conv, OP_FCONV_TO_R4);
1506 conv->inst_left = arg->inst_left;
1507 arg->inst_left = conv;
1508 }
1509 } else {
1510 g_assert_not_reached ();
1511 }
1512 }
1513 }
1514 /*
1515 * Reverse the call->out_args list.
1516 */
1517 {
1518 MonoInst *prev = NULL, *list = call->out_args, *next;
1519 while (list) {
1520 next = list->next;
1521 list->next = prev;
1522 prev = list;
1523 list = next;
1524 }
1525 call->out_args = prev;
1526 }
1527 call->stack_usage = cinfo->stack_usage;
1528
1529 lParamArea = cinfo->stack_usage - S390_MINIMAL_STACK_SIZE;
1530 cfg->param_area = MAX (cfg->param_area, lParamArea);
1531 cfg->flags |= MONO_CFG_HAS_CALLS;
1532 /*----------------------------------------------------------*/
1533 /* should set more info in call, such as the stack space */
1534 /* used by the args that needs to be added back to esp */
1535 /*----------------------------------------------------------*/
1536
1537 g_free (cinfo);
1538 return call;
1539 }
1540
1541 /*========================= End of Function ========================*/
1542
1543 /*------------------------------------------------------------------*/
1544 /* */
1545 /* Name - mono_arch_instrument_mem_needs */
1546 /* */
1547 /* Function - Allow tracing to work with this interface (with */
1548 /* an optional argument). */
1549 /* */
1550 /*------------------------------------------------------------------*/
1551
1552 void
1553 mono_arch_instrument_mem_needs (MonoMethod *method, int *stack, int *code)
1554 {
1555 /* no stack room needed now (may be needed for FASTCALL-trace support) */
1556 *stack = 0;
1557 /* split prolog-epilog requirements? */
1558 *code = 50; /* max bytes needed: check this number */
1559 }
1560
1561 /*========================= End of Function ========================*/
1562
1563 /*------------------------------------------------------------------*/
1564 /* */
1565 /* Name - mono_arch_instrument_prolog */
1566 /* */
1567 /* Function - Create an "instrumented" prolog. */
1568 /* */
1569 /*------------------------------------------------------------------*/
1570
1571 void*
1572 mono_arch_instrument_prolog (MonoCompile *cfg, void *func, void *p,
1573 gboolean enable_arguments)
1574 {
1575 guchar *code = p;
1576 int parmOffset,
1577 fpOffset;
1578
1579 parmOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1580 if (cfg->method->save_lmf)
1581 parmOffset -= sizeof(MonoLMF);
1582 fpOffset = parmOffset + (5*sizeof(gint32));
1583
1584 s390_stm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1585 s390_std (code, s390_f0, 0, STK_BASE, fpOffset);
1586 s390_std (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1587 s390_std (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1588 s390_basr (code, s390_r13, 0);
1589 s390_j (code, 6);
1590 s390_word (code, cfg->method);
1591 s390_word (code, func);
1592 s390_l (code, s390_r2, 0, s390_r13, 4);
1593 s390_la (code, s390_r3, 0, STK_BASE, parmOffset);
1594 s390_lr (code, s390_r4, STK_BASE);
1595 s390_ahi (code, s390_r4, cfg->stack_usage);
1596 s390_l (code, s390_r1, 0, s390_r13, 8);
1597 s390_basr (code, s390_r14, s390_r1);
1598 s390_ld (code, s390_f2, 0, STK_BASE, fpOffset+2*sizeof(gdouble));
1599 s390_ld (code, s390_f1, 0, STK_BASE, fpOffset+sizeof(gdouble));
1600 s390_ld (code, s390_f0, 0, STK_BASE, fpOffset);
1601 s390_lm (code, s390_r2, s390_r6, STK_BASE, parmOffset);
1602
1603 return code;
1604 }
1605
1606 /*========================= End of Function ========================*/
1607
1608 /*------------------------------------------------------------------*/
1609 /* */
1610 /* Name - mono_arch_instrument_epilog */
1611 /* */
1612 /* Function - Create an epilog that will handle the returned */
1613 /* values used in instrumentation. */
1614 /* */
1615 /*------------------------------------------------------------------*/
1616
1617 void*
1618 mono_arch_instrument_epilog (MonoCompile *cfg, void *func, void *p, gboolean enable_arguments)
1619 {
1620 guchar *code = p;
1621 int save_mode = SAVE_NONE,
1622 saveOffset;
1623 MonoMethod *method = cfg->method;
1624 int rtype = method->signature->ret->type;
1625
1626 saveOffset = cfg->stack_usage - S390_TRACE_STACK_SIZE;
1627 if (method->save_lmf)
1628 saveOffset -= sizeof(MonoLMF);
1629
1630 handle_enum:
1631 switch (rtype) {
1632 case MONO_TYPE_VOID:
1633 /* special case string .ctor icall */
1634 if (strcmp (".ctor", method->name) && method->klass == mono_defaults.string_class)
1635 save_mode = SAVE_ONE;
1636 else
1637 save_mode = SAVE_NONE;
1638 break;
1639 case MONO_TYPE_I8:
1640 case MONO_TYPE_U8:
1641 save_mode = SAVE_TWO;
1642 break;
1643 case MONO_TYPE_R4:
1644 case MONO_TYPE_R8:
1645 save_mode = SAVE_FP;
1646 break;
1647 case MONO_TYPE_VALUETYPE:
1648 if (method->signature->ret->data.klass->enumtype) {
1649 rtype = method->signature->ret->data.klass->enum_basetype->type;
1650 goto handle_enum;
1651 }
1652 save_mode = SAVE_STRUCT;
1653 break;
1654 default:
1655 save_mode = SAVE_ONE;
1656 break;
1657 }
1658
1659 switch (save_mode) {
1660 case SAVE_TWO:
1661 s390_stm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1662 if (enable_arguments) {
1663 s390_lr (code, s390_r4, s390_r3);
1664 s390_lr (code, s390_r3, s390_r2);
1665 }
1666 break;
1667 case SAVE_ONE:
1668 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1669 if (enable_arguments) {
1670 s390_lr (code, s390_r3, s390_r2);
1671 }
1672 break;
1673 case SAVE_FP:
1674 s390_std (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1675 if (enable_arguments) {
1676 /* FIXME: what reg? */
1677 s390_ldr (code, s390_f2, s390_f0);
1678 s390_lm (code, s390_r3, s390_r4, cfg->frame_reg, saveOffset);
1679 }
1680 break;
1681 case SAVE_STRUCT:
1682 s390_st (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1683 if (enable_arguments) {
1684 s390_l (code, s390_r3, 0, cfg->frame_reg,
1685 S390_MINIMAL_STACK_SIZE+cfg->param_area);
1686 }
1687 break;
1688 case SAVE_NONE:
1689 default:
1690 break;
1691 }
1692
1693 s390_basr (code, s390_r13, 0);
1694 s390_j (code, 6);
1695 s390_word (code, cfg->method);
1696 s390_word (code, func);
1697 s390_l (code, s390_r2, 0, s390_r13, 4);
1698 s390_l (code, s390_r1, 0, s390_r13, 8);
1699 s390_basr (code, s390_r14, s390_r1);
1700
1701 switch (save_mode) {
1702 case SAVE_TWO:
1703 s390_lm (code, s390_r2, s390_r3, cfg->frame_reg, saveOffset);
1704 break;
1705 case SAVE_ONE:
1706 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1707 break;
1708 case SAVE_FP:
1709 s390_ld (code, s390_f0, 0, cfg->frame_reg, saveOffset);
1710 break;
1711 case SAVE_STRUCT:
1712 s390_l (code, s390_r2, 0, cfg->frame_reg, saveOffset);
1713 break;
1714 case SAVE_NONE:
1715 default:
1716 break;
1717 }
1718
1719 return code;
1720 }
1721
1722 /*========================= End of Function ========================*/
1723
1724 /*------------------------------------------------------------------*/
1725 /* */
1726 /* Name - peephole_pass */
1727 /* */
1728 /* Function - Form a peephole pass at the code looking for */
1729 /* simple optimizations. */
1730 /* */
1731 /*------------------------------------------------------------------*/
1732
1733 static void
1734 peephole_pass (MonoCompile *cfg, MonoBasicBlock *bb)
1735 {
1736 MonoInst *ins, *last_ins = NULL;
1737 ins = bb->code;
1738
1739 while (ins) {
1740
1741 switch (ins->opcode) {
1742 case OP_MUL_IMM:
1743 /* remove unnecessary multiplication with 1 */
1744 if (ins->inst_imm == 1) {
1745 if (ins->dreg != ins->sreg1) {
1746 ins->opcode = OP_MOVE;
1747 } else {
1748 last_ins->next = ins->next;
1749 ins = ins->next;
1750 continue;
1751 }
1752 }
1753 break;
1754 case OP_LOAD_MEMBASE:
1755 case OP_LOADI4_MEMBASE:
1756 /*
1757 * OP_STORE_MEMBASE_REG reg, offset(basereg)
1758 * OP_LOAD_MEMBASE offset(basereg), reg
1759 */
1760 if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_REG
1761 || last_ins->opcode == OP_STORE_MEMBASE_REG) &&
1762 ins->inst_basereg == last_ins->inst_destbasereg &&
1763 ins->inst_offset == last_ins->inst_offset) {
1764 if (ins->dreg == last_ins->sreg1) {
1765 last_ins->next = ins->next;
1766 ins = ins->next;
1767 continue;
1768 } else {
1769 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1770 ins->opcode = OP_MOVE;
1771 ins->sreg1 = last_ins->sreg1;
1772 }
1773
1774 /*
1775 * Note: reg1 must be different from the basereg in the second load
1776 * OP_LOAD_MEMBASE offset(basereg), reg1
1777 * OP_LOAD_MEMBASE offset(basereg), reg2
1778 * -->
1779 * OP_LOAD_MEMBASE offset(basereg), reg1
1780 * OP_MOVE reg1, reg2
1781 */
1782 } if (last_ins && (last_ins->opcode == OP_LOADI4_MEMBASE
1783 || last_ins->opcode == OP_LOAD_MEMBASE) &&
1784 ins->inst_basereg != last_ins->dreg &&
1785 ins->inst_basereg == last_ins->inst_basereg &&
1786 ins->inst_offset == last_ins->inst_offset) {
1787
1788 if (ins->dreg == last_ins->dreg) {
1789 last_ins->next = ins->next;
1790 ins = ins->next;
1791 continue;
1792 } else {
1793 ins->opcode = OP_MOVE;
1794 ins->sreg1 = last_ins->dreg;
1795 }
1796
1797 //g_assert_not_reached ();
1798
1799 #if 0
1800 /*
1801 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
1802 * OP_LOAD_MEMBASE offset(basereg), reg
1803 * -->
1804 * OP_STORE_MEMBASE_IMM imm, offset(basereg)
1805 * OP_ICONST reg, imm
1806 */
1807 } else if (last_ins && (last_ins->opcode == OP_STOREI4_MEMBASE_IMM
1808 || last_ins->opcode == OP_STORE_MEMBASE_IMM) &&
1809 ins->inst_basereg == last_ins->inst_destbasereg &&
1810 ins->inst_offset == last_ins->inst_offset) {
1811 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1812 ins->opcode = OP_ICONST;
1813 ins->inst_c0 = last_ins->inst_imm;
1814 g_assert_not_reached (); // check this rule
1815 #endif
1816 }
1817 break;
1818 case OP_LOADU1_MEMBASE:
1819 case OP_LOADI1_MEMBASE:
1820 if (last_ins && (last_ins->opcode == OP_STOREI1_MEMBASE_REG) &&
1821 ins->inst_basereg == last_ins->inst_destbasereg &&
1822 ins->inst_offset == last_ins->inst_offset) {
1823 if (ins->dreg == last_ins->sreg1) {
1824 last_ins->next = ins->next;
1825 ins = ins->next;
1826 continue;
1827 } else {
1828 //static int c = 0; printf ("MATCHX %s %d\n", cfg->method->name,c++);
1829 ins->opcode = OP_MOVE;
1830 ins->sreg1 = last_ins->sreg1;
1831 }
1832 }
1833 break;
1834 case OP_LOADU2_MEMBASE:
1835 case OP_LOADI2_MEMBASE:
1836 if (last_ins && (last_ins->opcode == OP_STOREI2_MEMBASE_REG) &&
1837 ins->inst_basereg == last_ins->inst_destbasereg &&
1838 ins->inst_offset == last_ins->inst_offset) {
1839 if (ins->dreg == last_ins->sreg1) {
1840 last_ins->next = ins->next;
1841 ins = ins->next;
1842 continue;
1843 } else {
1844 ins->opcode = OP_MOVE;
1845 ins->sreg1 = last_ins->sreg1;
1846 }
1847 }
1848 break;
1849 case CEE_CONV_I4:
1850 case CEE_CONV_U4:
1851 case OP_MOVE:
1852 /*
1853 * OP_MOVE reg, reg
1854 */
1855 if (ins->dreg == ins->sreg1) {
1856 if (last_ins)
1857 last_ins->next = ins->next;
1858 ins = ins->next;
1859 continue;
1860 }
1861 /*
1862 * OP_MOVE sreg, dreg
1863 * OP_MOVE dreg, sreg
1864 */
1865 if (last_ins && last_ins->opcode == OP_MOVE &&
1866 ins->sreg1 == last_ins->dreg &&
1867 ins->dreg == last_ins->sreg1) {
1868 last_ins->next = ins->next;
1869 ins = ins->next;
1870 continue;
1871 }
1872 break;
1873 }
1874 last_ins = ins;
1875 ins = ins->next;
1876 }
1877 bb->last_ins = last_ins;
1878 }
1879
1880 /*========================= End of Function ========================*/
1881
1882 /*------------------------------------------------------------------*/
1883 /* */
1884 /* Name - mono_spillvar_offset */
1885 /* */
1886 /* Function - Returns the offset used by spillvar. It allocates */
1887 /* a new spill variable if necessary. */
1888 /* */
1889 /*------------------------------------------------------------------*/
1890
1891 static int
1892 mono_spillvar_offset (MonoCompile *cfg, int spillvar)
1893 {
1894 MonoSpillInfo **si, *info;
1895 int i = 0;
1896
1897 si = &cfg->spill_info;
1898
1899 while (i <= spillvar) {
1900
1901 if (!*si) {
1902 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
1903 info->next = NULL;
1904 info->offset = cfg->stack_offset;
1905 cfg->stack_offset += sizeof (gpointer);
1906 }
1907
1908 if (i == spillvar)
1909 return (*si)->offset;
1910
1911 i++;
1912 si = &(*si)->next;
1913 }
1914
1915 g_assert_not_reached ();
1916 return 0;
1917 }
1918
1919 /*========================= End of Function ========================*/
1920
1921 /*------------------------------------------------------------------*/
1922 /* */
1923 /* Name - mono_spillvar_offset_float */
1924 /* */
1925 /* Function - */
1926 /* */
1927 /*------------------------------------------------------------------*/
1928
1929 static int
1930 mono_spillvar_offset_float (MonoCompile *cfg, int spillvar)
1931 {
1932 MonoSpillInfo **si, *info;
1933 int i = 0;
1934
1935 si = &cfg->spill_info_float;
1936
1937 while (i <= spillvar) {
1938
1939 if (!*si) {
1940 *si = info = mono_mempool_alloc (cfg->mempool, sizeof (MonoSpillInfo));
1941 info->next = NULL;
1942 cfg->stack_offset = S390_ALIGN(cfg->stack_offset, S390_STACK_ALIGNMENT);
1943 info->offset = cfg->stack_offset;
1944 cfg->stack_offset += sizeof (double);
1945 }
1946
1947 if (i == spillvar)
1948 return (*si)->offset;
1949
1950 i++;
1951 si = &(*si)->next;
1952 }
1953
1954 g_assert_not_reached ();
1955 return 0;
1956 }
1957
1958 /*========================= End of Function ========================*/
1959
1960 /*------------------------------------------------------------------*/
1961 /* */
1962 /* Name - print_ins */
1963 /* */
1964 /* Function - Decode and print the instruction for tracing. */
1965 /* */
1966 /*------------------------------------------------------------------*/
1967
1968 static void
1969 print_ins (int i, MonoInst *ins)
1970 {
1971 const char *spec = ins_spec [ins->opcode];
1972 g_print ("\t%-2d %s", i, mono_inst_name (ins->opcode));
1973 if (spec [MONO_INST_DEST]) {
1974 if (ins->dreg >= MONO_MAX_IREGS)
1975 g_print (" R%d <-", ins->dreg);
1976 else
1977 g_print (" %s <-", mono_arch_regname (ins->dreg));
1978 }
1979 if (spec [MONO_INST_SRC1]) {
1980 if (ins->sreg1 >= MONO_MAX_IREGS)
1981 g_print (" R%d", ins->sreg1);
1982 else
1983 g_print (" %s", mono_arch_regname (ins->sreg1));
1984 }
1985 if (spec [MONO_INST_SRC2]) {
1986 if (ins->sreg2 >= MONO_MAX_IREGS)
1987 g_print (" R%d", ins->sreg2);
1988 else
1989 g_print (" %s", mono_arch_regname (ins->sreg2));
1990 }
1991 if (spec [MONO_INST_CLOB])
1992 g_print (" clobbers: %c", spec [MONO_INST_CLOB]);
1993 g_print ("\n");
1994 }
1995
1996 /*========================= End of Function ========================*/
1997
1998 /*------------------------------------------------------------------*/
1999 /* */
2000 /* Name - print_regtrack. */
2001 /* */
2002 /* Function - */
2003 /* */
2004 /*------------------------------------------------------------------*/
2005
2006 static void
2007 print_regtrack (RegTrack *t, int num)
2008 {
2009 int i;
2010 char buf [32];
2011 const char *r;
2012
2013 for (i = 0; i < num; ++i) {
2014 if (!t [i].born_in)
2015 continue;
2016 if (i >= MONO_MAX_IREGS) {
2017 g_snprintf (buf, sizeof(buf), "R%d", i);
2018 r = buf;
2019 } else
2020 r = mono_arch_regname (i);
2021 g_print ("liveness: %s [%d - %d]\n", r, t [i].born_in, t[i].last_use);
2022 }
2023 }
2024
2025 /*========================= End of Function ========================*/
2026
2027 /*------------------------------------------------------------------*/
2028 /* */
2029 /* Name - inst_list_prepend */
2030 /* */
2031 /* Function - Prepend an instruction to the list. */
2032 /* */
2033 /*------------------------------------------------------------------*/
2034
2035 static inline InstList*
2036 inst_list_prepend (MonoMemPool *pool, InstList *list, MonoInst *data)
2037 {
2038 InstList *item = mono_mempool_alloc (pool, sizeof (InstList));
2039 item->data = data;
2040 item->prev = NULL;
2041 item->next = list;
2042 if (list)
2043 list->prev = item;
2044 return item;
2045 }
2046
2047 /*========================= End of Function ========================*/
2048
2049 /*------------------------------------------------------------------*/
2050 /* */
2051 /* Name - get_register_force_spilling */
2052 /* */
2053 /* Function - Force the spilling of the variable in the */
2054 /* symbolic register 'reg'. */
2055 /* */
2056 /*------------------------------------------------------------------*/
2057
2058 static int
2059 get_register_force_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, int reg)
2060 {
2061 MonoInst *load;
2062 int i, sel, spill;
2063
2064 sel = cfg->rs->iassign [reg];
2065 i = reg;
2066 spill = ++cfg->spill_count;
2067 cfg->rs->iassign [i] = -spill - 1;
2068 mono_regstate_free_int (cfg->rs, sel);
2069 /*----------------------------------------------------------*/
2070 /* we need to create a spill var and insert a load to sel */
2071 /* after the current instruction */
2072 /*----------------------------------------------------------*/
2073 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2074 load->dreg = sel;
2075 load->inst_basereg = cfg->frame_reg;
2076 load->inst_offset = mono_spillvar_offset (cfg, spill);
2077 if (item->prev) {
2078 while (ins->next != item->prev->data)
2079 ins = ins->next;
2080 }
2081 load->next = ins->next;
2082 ins->next = load;
2083 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n",
2084 spill, load->inst_offset, i, mono_arch_regname (sel)));
2085 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2086 g_assert (i == sel);
2087
2088 return sel;
2089 }
2090
2091 /*========================= End of Function ========================*/
2092
2093 /*------------------------------------------------------------------*/
2094 /* */
2095 /* Name - get_register_spilling */
2096 /* */
2097 /* Function - */
2098 /* */
2099 /*------------------------------------------------------------------*/
2100
2101 static int
2102 get_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2103 {
2104 MonoInst *load;
2105 int i, sel, spill;
2106
2107 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));
2108 /* exclude the registers in the current instruction */
2109 if (reg != ins->sreg1 &&
2110 (reg_is_freeable (ins->sreg1) ||
2111 (ins->sreg1 >= MONO_MAX_IREGS &&
2112 cfg->rs->iassign [ins->sreg1] >= 0))) {
2113 if (ins->sreg1 >= MONO_MAX_IREGS)
2114 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg1]);
2115 else
2116 regmask &= ~ (1 << ins->sreg1);
2117 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2118 }
2119 if (reg != ins->sreg2 &&
2120 (reg_is_freeable (ins->sreg2) ||
2121 (ins->sreg2 >= MONO_MAX_IREGS &&
2122 cfg->rs->iassign [ins->sreg2] >= 0))) {
2123 if (ins->sreg2 >= MONO_MAX_IREGS)
2124 regmask &= ~ (1 << cfg->rs->iassign [ins->sreg2]);
2125 else
2126 regmask &= ~ (1 << ins->sreg2);
2127 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2128 }
2129 if (reg != ins->dreg && reg_is_freeable (ins->dreg)) {
2130 regmask &= ~ (1 << ins->dreg);
2131 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2132 }
2133
2134 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2135 g_assert (regmask); /* need at least a register we can free */
2136 sel = -1;
2137 /* we should track prev_use and spill the register that's farther */
2138 for (i = 0; i < MONO_MAX_IREGS; ++i) {
2139 if (regmask & (1 << i)) {
2140 sel = i;
2141 DEBUG (g_print ("selected register %s has assignment %d\n", mono_arch_regname (sel), cfg->rs->iassign [sel]));
2142 break;
2143 }
2144 }
2145 i = cfg->rs->isymbolic [sel];
2146 spill = ++cfg->spill_count;
2147 cfg->rs->iassign [i] = -spill - 1;
2148 mono_regstate_free_int (cfg->rs, sel);
2149 /* we need to create a spill var and insert a load to sel after the current instruction */
2150 MONO_INST_NEW (cfg, load, OP_LOAD_MEMBASE);
2151 load->dreg = sel;
2152 load->inst_basereg = cfg->frame_reg;
2153 load->inst_offset = mono_spillvar_offset (cfg, spill);
2154 if (item->prev) {
2155 while (ins->next != item->prev->data)
2156 ins = ins->next;
2157 }
2158 load->next = ins->next;
2159 ins->next = load;
2160 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2161 i = mono_regstate_alloc_int (cfg->rs, 1 << sel);
2162 g_assert (i == sel);
2163
2164 return sel;
2165 }
2166
2167 /*========================= End of Function ========================*/
2168
2169 /*------------------------------------------------------------------*/
2170 /* */
2171 /* Name - get_float_register_spilling */
2172 /* */
2173 /* Function - */
2174 /* */
2175 /*------------------------------------------------------------------*/
2176
2177 static int
2178 get_float_register_spilling (MonoCompile *cfg, InstList *item, MonoInst *ins, guint32 regmask, int reg)
2179 {
2180 MonoInst *load;
2181 int i, sel, spill;
2182
2183 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));
2184 /* exclude the registers in the current instruction */
2185 if (reg != ins->sreg1 &&
2186 (freg_is_freeable (ins->sreg1) ||
2187 (ins->sreg1 >= MONO_MAX_FREGS &&
2188 cfg->rs->fassign [ins->sreg1] >= 0))) {
2189 if (ins->sreg1 >= MONO_MAX_FREGS)
2190 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg1]);
2191 else
2192 regmask &= ~ (1 << ins->sreg1);
2193 DEBUG (g_print ("excluding sreg1 %s\n", mono_arch_regname (ins->sreg1)));
2194 }
2195 if (reg != ins->sreg2 &&
2196 (freg_is_freeable (ins->sreg2) ||
2197 (ins->sreg2 >= MONO_MAX_FREGS &&
2198 cfg->rs->fassign [ins->sreg2] >= 0))) {
2199 if (ins->sreg2 >= MONO_MAX_FREGS)
2200 regmask &= ~ (1 << cfg->rs->fassign [ins->sreg2]);
2201 else
2202 regmask &= ~ (1 << ins->sreg2);
2203 DEBUG (g_print ("excluding sreg2 %s %d\n", mono_arch_regname (ins->sreg2), ins->sreg2));
2204 }
2205 if (reg != ins->dreg && freg_is_freeable (ins->dreg)) {
2206 regmask &= ~ (1 << ins->dreg);
2207 DEBUG (g_print ("excluding dreg %s\n", mono_arch_regname (ins->dreg)));
2208 }
2209
2210 DEBUG (g_print ("available regmask: 0x%08x\n", regmask));
2211 g_assert (regmask); /* need at least a register we can free */
2212 sel = -1;
2213 /* we should track prev_use and spill the register that's farther */
2214 for (i = 0; i < MONO_MAX_FREGS; ++i) {
2215 if (regmask & (1 << i)) {
2216 sel = i;
2217 DEBUG (g_print ("selected register %s has assignment %d\n",
2218 mono_arch_regname (sel), cfg->rs->fassign [sel]));
2219 break;
2220 }
2221 }
2222 i = cfg->rs->fsymbolic [sel];
2223 spill = ++cfg->spill_count;
2224 cfg->rs->fassign [i] = -spill - 1;
2225 mono_regstate_free_float(cfg->rs, sel);
2226 /* we need to create a spill var and insert a load to sel after the current instruction */
2227 MONO_INST_NEW (cfg, load, OP_LOADR8_MEMBASE);
2228 load->dreg = sel;
2229 load->inst_basereg = cfg->frame_reg;
2230 load->inst_offset = mono_spillvar_offset_float (cfg, spill);
2231 if (item->prev) {
2232 while (ins->next != item->prev->data)
2233 ins = ins->next;
2234 }
2235 load->next = ins->next;
2236 ins->next = load;
2237 DEBUG (g_print ("SPILLED LOAD (%d at 0x%08x(%%sp)) R%d (freed %s)\n", spill, load->inst_offset, i, mono_arch_regname (sel)));
2238 i = mono_regstate_alloc_float (cfg->rs, 1 << sel);
2239 g_assert (i == sel);
2240
2241 return sel;
2242 }
2243
2244 /*========================= End of Function ========================*/
2245
2246 /*------------------------------------------------------------------*/
2247 /* */
2248 /* Name - create_copy_ins */
2249 /* */
2250 /* Function - Create an instruction to copy from reg to reg. */
2251 /* */
2252 /*------------------------------------------------------------------*/
2253
2254 static MonoInst*
2255 create_copy_ins (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2256 {
2257 MonoInst *copy;
2258 MONO_INST_NEW (cfg, copy, OP_MOVE);
2259 copy->dreg = dest;
2260 copy->sreg1 = src;
2261 if (ins) {
2262 copy->next = ins->next;
2263 ins->next = copy;
2264 }
2265 DEBUG (g_print ("\tforced copy from %s to %s\n",
2266 mono_arch_regname (src), mono_arch_regname (dest)));
2267 return copy;
2268 }
2269
2270 /*========================= End of Function ========================*/
2271
2272 /*------------------------------------------------------------------*/
2273 /* */
2274 /* Name - create_copy_ins_float */
2275 /* */
2276 /* Function - Create an instruction to copy from float reg to */
2277 /* float reg. */
2278 /* */
2279 /*------------------------------------------------------------------*/
2280
2281 static MonoInst*
2282 create_copy_ins_float (MonoCompile *cfg, int dest, int src, MonoInst *ins)
2283 {
2284 MonoInst *copy;
2285 MONO_INST_NEW (cfg, copy, OP_FMOVE);
2286 copy->dreg = dest;
2287 copy->sreg1 = src;
2288 if (ins) {
2289 copy->next = ins->next;
2290 ins->next = copy;
2291 }
2292 DEBUG (g_print ("\tforced copy from %s to %s\n",
2293 mono_arch_regname (src), mono_arch_regname (dest)));
2294 return copy;
2295 }
2296
2297 /*========================= End of Function ========================*/
2298
2299 /*------------------------------------------------------------------*/
2300 /* */
2301 /* Name - create_spilled_store */
2302 /* */
2303 /* Function - Spill register to storage. */
2304 /* */
2305 /*------------------------------------------------------------------*/
2306
2307 static MonoInst*
2308 create_spilled_store (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2309 {
2310 MonoInst *store;
2311 MONO_INST_NEW (cfg, store, OP_STORE_MEMBASE_REG);
2312 store->sreg1 = reg;
2313 store->inst_destbasereg = cfg->frame_reg;
2314 store->inst_offset = mono_spillvar_offset (cfg, spill);
2315 if (ins) {
2316 store->next = ins->next;
2317 ins->next = store;
2318 }
2319 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2320 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2321 return store;
2322 }
2323
2324 /*========================= End of Function ========================*/
2325
2326 /*------------------------------------------------------------------*/
2327 /* */
2328 /* Name - create_spilled_store_float */
2329 /* */
2330 /* Function - Spill floating point register to storage. */
2331 /* */
2332 /*------------------------------------------------------------------*/
2333
2334 static MonoInst*
2335 create_spilled_store_float (MonoCompile *cfg, int spill, int reg, int prev_reg, MonoInst *ins)
2336 {
2337 MonoInst *store;
2338 MONO_INST_NEW (cfg, store, OP_STORER8_MEMBASE_REG);
2339 store->sreg1 = reg;
2340 store->inst_destbasereg = cfg->frame_reg;
2341 store->inst_offset = mono_spillvar_offset_float (cfg, spill);
2342 if (ins) {
2343 store->next = ins->next;
2344 ins->next = store;
2345 }
2346 DEBUG (g_print ("SPILLED STORE (%d at 0x%08x(%%sp)) R%d (from %s)\n",
2347 spill, store->inst_offset, prev_reg, mono_arch_regname (reg)));
2348 return store;
2349 }
2350
2351 /*========================= End of Function ========================*/
2352
2353 /*------------------------------------------------------------------*/
2354 /* */
2355 /* Name - insert_before_ins */
2356 /* */
2357 /* Function - Insert an instruction before another. */
2358 /* */
2359 /*------------------------------------------------------------------*/
2360
2361 static void
2362 insert_before_ins (MonoInst *ins, InstList *item, MonoInst* to_insert)
2363 {
2364 MonoInst *prev;
2365 g_assert (item->next);
2366 prev = item->next->data;
2367
2368 while (prev->next != ins)
2369 prev = prev->next;
2370 to_insert->next = ins;
2371 prev->next = to_insert;
2372 /*
2373 * needed otherwise in the next instruction we can add an ins to the
2374 * end and that would get past this instruction.
2375 */
2376 item->data = to_insert;
2377 }
2378
2379 /*========================= End of Function ========================*/
2380
2381 /*------------------------------------------------------------------*/
2382 /* */
2383 /* Name - alloc_int_reg */
2384 /* */
2385 /* Function - Allocate a general register. */
2386 /* */
2387 /*------------------------------------------------------------------*/
2388
2389 static int
2390 alloc_int_reg (MonoCompile *cfg, InstList *curinst, MonoInst *ins, int sym_reg, guint32 allow_mask)
2391 {
2392 int val = cfg->rs->iassign [sym_reg];
2393 if (val < 0) {
2394 int spill = 0;
2395 if (val < -1) {
2396 /* the register gets spilled after this inst */
2397 spill = -val -1;
2398 }
2399 val = mono_regstate_alloc_int (cfg->rs, allow_mask);
2400 if (val < 0)
2401 val = get_register_spilling (cfg, curinst, ins, allow_mask, sym_reg);
2402 cfg->rs->iassign [sym_reg] = val;
2403 /* add option to store before the instruction for src registers */
2404 if (spill)
2405 create_spilled_store (cfg, spill, val, sym_reg, ins);
2406 }
2407 cfg->rs->isymbolic [val] = sym_reg;
2408 return val;
2409 }
2410
2411 /*========================= End of Function ========================*/
2412
2413 /*------------------------------------------------------------------*/
2414 /* */
2415 /* Name - mono_arch_local_regalloc. */
2416 /* */
2417 /* Function - We first scan the list of instructions and we */
2418 /* save the liveness information of each register */
2419 /* (when the register is first used, when its value */
2420 /* is set etc.). We also reverse the list of instr- */
2421 /* uctions (in the InstList list) because assigning */
2422 /* registers backwards allows for more tricks to be */
2423 /* used. */
2424 /* */
2425 /*------------------------------------------------------------------*/
2426
2427 void
2428 mono_arch_local_regalloc (MonoCompile *cfg, MonoBasicBlock *bb)
2429 {
2430 MonoInst *ins;
2431 MonoRegState *rs = cfg->rs;
2432 int i, val;
2433 RegTrack *reginfo, *reginfof;
2434 RegTrack *reginfo1, *reginfo2, *reginfod;
2435 InstList *tmp, *reversed = NULL;
2436 const char *spec;
2437 guint32 src1_mask, src2_mask, dest_mask;
2438 guint32 cur_iregs, cur_fregs;
2439
2440 if (!bb->code)
2441 return;
2442 rs->next_vireg = bb->max_ireg;
2443 rs->next_vfreg = bb->max_freg;
2444 mono_regstate_assign (rs);
2445 reginfo = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vireg);
2446 reginfof = mono_mempool_alloc0 (cfg->mempool, sizeof (RegTrack) * rs->next_vfreg);
2447 rs->ifree_mask = S390_CALLER_REGS;
2448 rs->ffree_mask = S390_CALLER_FREGS;
2449
2450 ins = bb->code;
2451 i = 1;
2452 DEBUG (g_print ("LOCAL regalloc: basic block: %d\n", bb->block_num));
2453 /* forward pass on the instructions to collect register liveness info */
2454 while (ins) {
2455 spec = ins_spec [ins->opcode];
2456 DEBUG (print_ins (i, ins));
2457 if (spec [MONO_INST_CLOB] == 'c') {
2458 MonoCallInst * call = (MonoCallInst*)ins;
2459 int j;
2460 }
2461 if (spec [MONO_INST_SRC1]) {
2462 if (spec [MONO_INST_SRC1] == 'f')
2463 reginfo1 = reginfof;
2464 else
2465 reginfo1 = reginfo;
2466 reginfo1 [ins->sreg1].prev_use = reginfo1 [ins->sreg1].last_use;
2467 reginfo1 [ins->sreg1].last_use = i;
2468 } else {
2469 ins->sreg1 = -1;
2470 }
2471 if (spec [MONO_INST_SRC2]) {
2472 if (spec [MONO_INST_SRC2] == 'f')
2473 reginfo2 = reginfof;
2474 else
2475 reginfo2 = reginfo;
2476 reginfo2 [ins->sreg2].prev_use = reginfo2 [ins->sreg2].last_use;
2477 reginfo2 [ins->sreg2].last_use = i;
2478 } else {
2479 ins->sreg2 = -1;
2480 }
2481 if (spec [MONO_INST_DEST]) {
2482 if (spec [MONO_INST_DEST] == 'f')
2483 reginfod = reginfof;
2484 else
2485 reginfod = reginfo;
2486 if (spec [MONO_INST_DEST] != 'b') /* it's not just a base register */
2487 reginfod [ins->dreg].killed_in = i;
2488 reginfod [ins->dreg].prev_use = reginfod [ins->dreg].last_use;
2489 reginfod [ins->dreg].last_use = i;
2490 if (reginfod [ins->dreg].born_in == 0 || reginfod [ins->dreg].born_in > i)
2491 reginfod [ins->dreg].born_in = i;
2492 if (spec [MONO_INST_DEST] == 'l') {
2493 /* result in eax:edx, the virtual register is allocated sequentially */
2494 reginfod [ins->dreg + 1].prev_use = reginfod [ins->dreg + 1].last_use;
2495 reginfod [ins->dreg + 1].last_use = i;
2496 if (reginfod [ins->dreg + 1].born_in == 0 || reginfod [ins->dreg + 1].born_in > i)
2497 reginfod [ins->dreg + 1].born_in = i;
2498 }
2499 } else {
2500 ins->dreg = -1;
2501 }
2502 reversed = inst_list_prepend (cfg->mempool, reversed, ins);
2503 ++i;
2504 ins = ins->next;
2505 }
2506
2507 cur_iregs = S390_CALLER_REGS;
2508 cur_fregs = S390_CALLER_FREGS;
2509
2510 DEBUG (print_regtrack (reginfo, rs->next_vireg));
2511 DEBUG (print_regtrack (reginfof, rs->next_vfreg));
2512 tmp = reversed;
2513 while (tmp) {
2514 int prev_dreg, prev_sreg1, prev_sreg2;
2515 --i;
2516 ins = tmp->data;
2517 spec = ins_spec [ins->opcode];
2518 DEBUG (g_print ("processing:"));
2519 DEBUG (print_ins (i, ins));
2520 /* make the register available for allocation: FIXME add fp reg */
2521 if (ins->opcode == OP_SETREG || ins->opcode == OP_SETREGIMM) {
2522 cur_iregs |= 1 << ins->dreg;
2523 DEBUG (g_print ("adding %d to cur_iregs\n", ins->dreg));
2524 } else if (ins->opcode == OP_SETFREG) {
2525 cur_fregs |= 1 << ins->dreg;
2526 DEBUG (g_print ("adding %d to cur_fregs\n", ins->dreg));
2527 } else if (spec [MONO_INST_CLOB] == 'c') {
2528 MonoCallInst *cinst = (MonoCallInst*)ins;
2529 DEBUG (g_print ("excluding regs 0x%x from cur_iregs (0x%x)\n", cinst->used_iregs, cur_iregs));
2530 DEBUG (g_print ("excluding fpregs 0x%x from cur_fregs (0x%x)\n", cinst->used_fregs, cur_fregs));
2531 cur_iregs &= ~cinst->used_iregs;
2532 cur_fregs &= ~cinst->used_fregs;
2533 DEBUG (g_print ("available cur_iregs: 0x%x\n", cur_iregs));
2534 DEBUG (g_print ("available cur_fregs: 0x%x\n", cur_fregs));
2535 /* registers used by the calling convention are excluded from
2536 * allocation: they will be selectively enabled when they are
2537 * assigned by the special SETREG opcodes.
2538 */
2539 }
2540 dest_mask = src1_mask = src2_mask = cur_iregs;
2541 /* update for use with FP regs... */
2542 if (spec [MONO_INST_DEST] == 'f') {
2543 dest_mask = cur_fregs;
2544 if (ins->dreg >= MONO_MAX_FREGS) {
2545 val = rs->fassign [ins->dreg];
2546 prev_dreg = ins->dreg;
2547 if (val < 0) {
2548 int spill = 0;
2549 if (val < -1) {
2550 /* the register gets spilled after this inst */
2551 spill = -val -1;
2552 }
2553 val = mono_regstate_alloc_float (rs, dest_mask);
2554 if (val < 0)
2555 val = get_float_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2556 rs->fassign [ins->dreg] = val;
2557 if (spill)
2558 create_spilled_store_float (cfg, spill, val, prev_dreg, ins);
2559 }
2560 DEBUG (g_print ("\tassigned dreg %s to dest R%d\n", mono_arch_regname (val), ins->dreg));
2561 rs->fsymbolic [val] = prev_dreg;
2562 ins->dreg = val;
2563 if (spec [MONO_INST_CLOB] == 'c' && ins->dreg != s390_f0) {
2564 /* this instruction only outputs to s390_f0, need to copy */
2565 create_copy_ins_float (cfg, ins->dreg, s390_f0, ins);
2566 }
2567 } else {
2568 prev_dreg = -1;
2569 }
2570 if (freg_is_freeable (ins->dreg) && prev_dreg >= 0 && (reginfo [prev_dreg].born_in >= i || !(cur_fregs & (1 << ins->dreg)))) {
2571 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2572 mono_regstate_free_float (rs, ins->dreg);
2573 }
2574 } else if (ins->dreg >= MONO_MAX_IREGS) {
2575 val = rs->iassign [ins->dreg];
2576 prev_dreg = ins->dreg;
2577 if (val < 0) {
2578 int spill = 0;
2579 if (val < -1) {
2580 /* the register gets spilled after this inst */
2581 spill = -val -1;
2582 }
2583 val = mono_regstate_alloc_int (rs, dest_mask);
2584 if (val < 0)
2585 val = get_register_spilling (cfg, tmp, ins, dest_mask, ins->dreg);
2586 rs->iassign [ins->dreg] = val;
2587 if (spill)
2588 create_spilled_store (cfg, spill, val, prev_dreg, ins);
2589 }
2590 DEBUG (g_print ("\tassigned dreg %s to dest R%d\n", mono_arch_regname (val), ins->dreg));
2591 rs->isymbolic [val] = prev_dreg;
2592 ins->dreg = val;
2593 if (spec [MONO_INST_DEST] == 'l') {
2594 int hreg = prev_dreg + 1;
2595 val = rs->iassign [hreg];
2596 if (val < 0) {
2597 int spill = 0;
2598 if (val < -1) {
2599 /* the register gets spilled after this inst */
2600 spill = -val -1;
2601 }
2602 val = mono_regstate_alloc_int (rs, dest_mask);
2603 if (val < 0)
2604 val = get_register_spilling (cfg, tmp, ins, dest_mask, hreg);
2605 rs->iassign [hreg] = val;
2606 if (spill)
2607 create_spilled_store (cfg, spill, val, hreg, ins);
2608 }
2609 DEBUG (g_print ("\tassigned hreg %s to dest R%d\n", mono_arch_regname (val), hreg));
2610 rs->isymbolic [val] = hreg;
2611 /* FIXME:? ins->dreg = val; */
2612 if (ins->dreg == s390_r3) {
2613 if (val != s390_r2)
2614 create_copy_ins (cfg, val, s390_r2, ins);
2615 } else if (ins->dreg == s390_r2) {
2616 if (val == s390_r3) {
2617 /* swap */
2618 create_copy_ins (cfg, s390_r3, s390_r0, ins);
2619 create_copy_ins (cfg, s390_r2, s390_r3, ins);
2620 create_copy_ins (cfg, s390_r0, s390_r2, ins);
2621 } else {
2622 /* two forced copies */
2623 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2624 create_copy_ins (cfg, val, s390_r2, ins);
2625 }
2626 } else {
2627 if (val == s390_r2) {
2628 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2629 } else {
2630 /* two forced copies */
2631 create_copy_ins (cfg, val, s390_r2, ins);
2632 create_copy_ins (cfg, ins->dreg, s390_r3, ins);
2633 }
2634 }
2635 if (reg_is_freeable (val) && hreg >= 0 && (reginfo [hreg].born_in >= i && !(cur_iregs & (1 << val)))) {
2636 DEBUG (g_print ("\tfreeable %s (R%d)\n", mono_arch_regname (val), hreg));
2637 mono_regstate_free_int (rs, val);
2638 }
2639 } else if (spec [MONO_INST_DEST] == 'a' && ins->dreg != s390_r2 && spec [MONO_INST_CLOB] != 'd') {
2640 /* this instruction only outputs to s390_r2, need to copy */
2641 create_copy_ins (cfg, ins->dreg, s390_r2, ins);
2642 }
2643 } else {
2644 prev_dreg = -1;
2645 }
2646 if (spec [MONO_INST_DEST] == 'f' &&
2647 freg_is_freeable (ins->dreg) &&
2648 prev_dreg >= 0 && (reginfof [prev_dreg].born_in >= i)) {
2649 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2650 mono_regstate_free_float (rs, ins->dreg);
2651 } else if (spec [MONO_INST_DEST] != 'f' &&
2652 reg_is_freeable (ins->dreg) &&
2653 prev_dreg >= 0 && (reginfo [prev_dreg].born_in >= i)) {
2654 DEBUG (g_print ("\tfreeable %s (R%d) (born in %d)\n", mono_arch_regname (ins->dreg), prev_dreg, reginfo [prev_dreg].born_in));
2655 mono_regstate_free_int (rs, ins->dreg);
2656 }
2657 if (spec [MONO_INST_SRC1] == 'f') {
2658 src1_mask = cur_fregs;
2659 if (ins->sreg1 >= MONO_MAX_FREGS) {
2660 val = rs->fassign [ins->sreg1];
2661 prev_sreg1 = ins->sreg1;
2662 if (val < 0) {
2663 int spill = 0;
2664 if (val < -1) {
2665 /* the register gets spilled after this inst */
2666 spill = -val -1;
2667 }
2668 //g_assert (val == -1); /* source cannot be spilled */
2669 val = mono_regstate_alloc_float (rs, src1_mask);
2670 if (val < 0)
2671 val = get_float_register_spilling (cfg, tmp, ins, src1_mask, ins->sreg1);
2672 rs->fassign [ins->sreg1] = val;
2673 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n", mono_arch_regname (val), ins->sreg1));
2674 if (spill) {
2675 MonoInst *store = create_spilled_store_float (cfg, spill, val, prev_sreg1, NULL);
2676 insert_before_ins (ins, tmp, store);
2677 }
2678 }
2679 rs->fsymbolic [val] = prev_sreg1;
2680 ins->sreg1 = val;
2681 } else {
2682 prev_sreg1 = -1;
2683 }
2684 } else if (ins->sreg1 >= MONO_MAX_IREGS) {
2685 val = rs->iassign [ins->sreg1];
2686 prev_sreg1 = ins->sreg1;
2687 if (val < 0) {
2688 int spill = 0;
2689 if (val < -1) {
2690 /* the register gets spilled after this inst */
2691 spill = -val -1;
2692 printf("val: %d spill: %d ins->sreg1: %d\n",val,spill,ins->sreg1);
2693 }
2694 val = mono_regstate_alloc_int (rs, src1_mask);
2695 if (val < 0)
2696 val = get_register_spilling (cfg, tmp, ins, src1_mask, ins->sreg1);
2697 rs->iassign [ins->sreg1] = val;
2698 DEBUG (g_print ("\tassigned sreg1 %s to R%d\n", mono_arch_regname (val), ins->sreg1));
2699 if (spill) {
2700 MonoInst *store = create_spilled_store (cfg, spill, val, prev_sreg1, NULL);
2701 insert_before_ins (ins, tmp, store);
2702 }
2703 }
2704 rs->isymbolic [val] = prev_sreg1;
2705 ins->sreg1 = val;
2706 } else {
2707 prev_sreg1 = -1;
2708 }
2709 /*----------------------------------------------*/
2710 /* handle clobbering of sreg1 */
2711 /*----------------------------------------------*/
2712 if ((spec [MONO_INST_CLOB] == '1' ||
2713 spec [MONO_INST_CLOB] == 's') &&
2714 ins->dreg != ins->sreg1) {
2715 MonoInst *copy = create_copy_ins (cfg, ins->dreg, ins->sreg1, NULL);
2716 DEBUG (g_print ("\tneed to copy sreg1 %s to dreg %s\n",
2717 mono_arch_regname (ins->sreg1),
2718 mono_arch_regname (ins->dreg)));
2719 if (ins->sreg2 == -1 || spec [MONO_INST_CLOB] == 's') {
2720 /* note: the copy is inserted before the current instruction! */
2721 insert_before_ins (ins, tmp, copy);
2722 /* we set sreg1 to dest as well */
2723 prev_sreg1 = ins->sreg1 = ins->dreg;
2724 } else {
2725 /* inserted after the operation */
2726 copy->next = ins->next;
2727 ins->next = copy;
2728 }
2729 }
2730
2731 if (spec [MONO_INST_SRC2] == 'f') {
2732 src2_mask = cur_fregs;
2733 if (ins->sreg2 >= MONO_MAX_FREGS) {
2734 val = rs->fassign [ins->sreg2];
2735 prev_sreg2 = ins->sreg2;
2736 if (val < 0) {
2737 int spill = 0;
2738 if (val < -1) {
2739 /* the register gets spilled after this inst */
2740 spill = -val -1;
2741 }
2742 val = mono_regstate_alloc_float (rs, src2_mask);
2743 if (val < 0)
2744 val = get_float_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2745 rs->fassign [ins->sreg2] = val;
2746 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2747 if (spill)
2748 create_spilled_store_float (cfg, spill, val, prev_sreg2, ins);
2749 }
2750 rs->fsymbolic [val] = prev_sreg2;
2751 ins->sreg2 = val;
2752 } else {
2753 prev_sreg2 = -1;
2754 }
2755 } else if (ins->sreg2 >= MONO_MAX_IREGS) {
2756 val = rs->iassign [ins->sreg2];
2757 prev_sreg2 = ins->sreg2;
2758 if (val < 0) {
2759 int spill = 0;
2760 if (val < -1) {
2761 /* the register gets spilled after this inst */
2762 spill = -val -1;
2763 }
2764 val = mono_regstate_alloc_int (rs, src2_mask);
2765 if (val < 0)
2766 val = get_register_spilling (cfg, tmp, ins, src2_mask, ins->sreg2);
2767 rs->iassign [ins->sreg2] = val;
2768 DEBUG (g_print ("\tassigned sreg2 %s to R%d\n", mono_arch_regname (val), ins->sreg2));
2769 if (spill)
2770 create_spilled_store (cfg, spill, val, prev_sreg2, ins);
2771 }
2772 rs->isymbolic [val] = prev_sreg2;
2773 ins->sreg2 = val;
2774 } else {
2775 prev_sreg2 = -1;
2776 }
2777
2778 if (spec [MONO_INST_CLOB] == 'c') {
2779 int j, s;
2780 guint32 clob_mask = S390_CALLER_REGS;
2781 for (j = 0; j < MONO_MAX_IREGS; ++j) {
2782 s = 1 << j;
2783 if ((clob_mask & s) && !(rs->ifree_mask & s) && j != ins->sreg1) {
2784 //g_warning ("register %s busy at call site\n", mono_arch_regname (j));
2785 }
2786 }
2787 }
2788 /*if (reg_is_freeable (ins->sreg1) && prev_sreg1 >= 0 && reginfo [prev_sreg1].born_in >= i) {
2789 DEBUG (g_print ("freeable %s\n", mono_arch_regname (ins->sreg1)));
2790 mono_regstate_free_int (rs, ins->sreg1);
2791 }
2792 if (reg_is_freeable (ins->sreg2) && prev_sreg2 >= 0 && reginfo [prev_sreg2].born_in >= i) {
2793 DEBUG (g_print ("freeable %s\n", mono_arch_regname (ins->sreg2)));
2794 mono_regstate_free_int (rs, ins->sreg2);
2795 }*/
2796
2797 //DEBUG (print_ins (i, ins));
2798 tmp = tmp->next;
2799 }
2800 }
2801
2802 /*========================= End of Function ========================*/
2803
2804 /*------------------------------------------------------------------*/
2805 /* */
2806 /* Name - emit_float_to_int */
2807 /* */
2808 /* Function - Create instructions which will convert a floating */
2809 /* point value to integer. */
2810 /* */
2811 /*------------------------------------------------------------------*/
2812
2813 static guchar*
2814 emit_float_to_int (MonoCompile *cfg, guchar *code, int dreg, int sreg, int size, gboolean is_signed)
2815 {
2816 /* sreg is a float, dreg is an integer reg. */
2817 if (is_signed) {
2818 s390_cfdbr (code, dreg, 5, sreg);
2819 } else {
2820 s390_basr (code, s390_r13, 0);
2821 s390_j (code, 10);
2822 s390_double (code, 0x41e0000000000000);
2823 s390_double (code, 0x41f0000000000000);
2824 s390_ldr (code, s390_f0, sreg);
2825 s390_cdb (code, s390_f0, 0, s390_r13, 0);
2826 s390_jl (code, 10);
2827 s390_sdb (code, s390_f0, 0, s390_r13, 8);
2828 s390_cfdbr (code, dreg, 7, s390_f0);
2829 s390_j (code, 5);
2830 s390_cfdbr (code, dreg, 5, sreg);
2831 }
2832 return code;
2833 }
2834
2835 /*========================= End of Function ========================*/
2836
2837 /*------------------------------------------------------------------*/
2838 /* */
2839 /* Name - mono_emit_stack_alloc */
2840 /* */
2841 /* Function - */
2842 /* */
2843 /*------------------------------------------------------------------*/
2844
2845 static unsigned char*
2846 mono_emit_stack_alloc (guchar *code, MonoInst* tree)
2847 {
2848 return code;
2849 }
2850
2851 /*========================= End of Function ========================*/
2852
2853 /*------------------------------------------------------------------*/
2854 /* */
2855 /* Name - mono_arch_output_basic_block */
2856 /* */
2857 /* Function - Perform the "real" work of emitting instructions */
2858 /* that will do the work of in the basic block. */
2859 /* */
2860 /*------------------------------------------------------------------*/
2861
2862 void
2863 mono_arch_output_basic_block (MonoCompile *cfg, MonoBasicBlock *bb)
2864 {
2865 MonoInst *ins;
2866 MonoCallInst *call;
2867 guint offset;
2868 guint8 *code = cfg->native_code + cfg->code_len;
2869 MonoInst *last_ins = NULL;
2870 guint last_offset = 0;
2871 int max_len, cpos;
2872
2873 if (cfg->opt & MONO_OPT_PEEPHOLE)
2874 peephole_pass (cfg, bb);
2875
2876 /* we don't align basic blocks of loops on s390 */
2877
2878 if (cfg->verbose_level > 2)
2879 g_print ("Basic block %d starting at offset 0x%x\n", bb->block_num, bb->native_offset);
2880
2881 cpos = bb->max_offset;
2882
2883 if (cfg->prof_options & MONO_PROFILE_COVERAGE) {
2884 //MonoCoverageInfo *cov = mono_get_coverage_info (cfg->method);
2885 //g_assert (!mono_compile_aot);
2886 //cpos += 6;
2887 //if (bb->cil_code)
2888 // cov->data [bb->dfn].iloffset = bb->cil_code - cfg->cil_code;
2889 /* this is not thread save, but good enough */
2890 /* fixme: howto handle overflows? */
2891 //x86_inc_mem (code, &cov->data [bb->dfn].count);
2892 }
2893
2894 ins = bb->code;
2895 while (ins) {
2896 offset = code - cfg->native_code;
2897
2898 max_len = ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
2899
2900 if (offset > (cfg->code_size - max_len - 16)) {
2901 cfg->code_size *= 2;
2902 cfg->native_code = g_realloc (cfg->native_code, cfg->code_size);
2903 code = cfg->native_code + offset;
2904 }
2905
2906 switch (ins->opcode) {
2907 case OP_STOREI1_MEMBASE_IMM:
2908 s390_lhi (code, s390_r14, ins->inst_imm);
2909 if (s390_is_uimm12(ins->inst_offset))
2910 s390_stc (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
2911 else {
2912 s390_basr (code, s390_r13, 0);
2913 s390_j (code, 4);
2914 s390_word (code, ins->inst_offset);
2915 s390_l (code, s390_r13, 0, s390_r13, 4);
2916 s390_stc (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
2917 }
2918 break;
2919 case OP_STOREI2_MEMBASE_IMM:
2920 s390_lhi (code, s390_r14, ins->inst_imm);
2921 if (s390_is_uimm12(ins->inst_offset)) {
2922 s390_sth (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
2923 } else {
2924 s390_basr (code, s390_r14, 0);
2925 s390_j (code, 4);
2926 s390_word (code, ins->inst_offset);
2927 s390_l (code, s390_r13, 0, s390_r13, 4);
2928 s390_sth (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
2929 }
2930 break;
2931 case OP_STORE_MEMBASE_IMM:
2932 case OP_STOREI4_MEMBASE_IMM:
2933 if (s390_is_imm16(ins->inst_imm)) {
2934 s390_lhi (code, s390_r14, ins->inst_imm);
2935 } else {
2936 s390_basr (code, s390_r13, 0);
2937 s390_j (code, 4);
2938 s390_word (code, ins->inst_imm);
2939 s390_l (code, s390_r14, 0, s390_r13, 4);
2940 }
2941 if (s390_is_uimm12(ins->inst_offset)) {
2942 s390_st (code, s390_r14, 0, ins->inst_destbasereg, ins->inst_offset);
2943 } else {
2944 s390_basr (code, s390_r13, 0);
2945 s390_j (code, 4);
2946 s390_word (code, ins->inst_offset);
2947 s390_l (code, s390_r13, 0, s390_r13, 4);
2948 s390_st (code, s390_r14, s390_r13, ins->inst_destbasereg, 0);
2949 }
2950 break;
2951 case OP_STOREI1_MEMBASE_REG:
2952 if (s390_is_uimm12(ins->inst_offset)) {
2953 s390_stc (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2954 } else {
2955 s390_basr (code, s390_r13, 0);
2956 s390_j (code, 4);
2957 s390_word (code, ins->inst_offset);
2958 s390_l (code, s390_r13, 0, s390_r13, 4);
2959 s390_stc (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2960 }
2961 break;
2962 case OP_STOREI2_MEMBASE_REG:
2963 if (s390_is_uimm12(ins->inst_offset)) {
2964 s390_sth (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2965 } else {
2966 s390_basr (code, s390_r13, 0);
2967 s390_j (code, 4);
2968 s390_word (code, ins->inst_offset);
2969 s390_l (code, s390_r13, 0, s390_r13, 4);
2970 s390_sth (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2971 }
2972 break;
2973 case OP_STORE_MEMBASE_REG:
2974 case OP_STOREI4_MEMBASE_REG:
2975 if (s390_is_uimm12(ins->inst_offset)) {
2976 s390_st (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
2977 } else {
2978 s390_basr (code, s390_r13, 0);
2979 s390_j (code, 4);
2980 s390_word (code, ins->inst_offset);
2981 s390_l (code, s390_r13, 0, s390_r13, 4);
2982 s390_st (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
2983 }
2984 break;
2985 case CEE_LDIND_I:
2986 case CEE_LDIND_I4:
2987 case CEE_LDIND_U4:
2988 s390_basr (code, s390_r13, 0);
2989 s390_j (code, 4);
2990 s390_word (code, ins->inst_p0);
2991 s390_l (code, s390_r13, 0, s390_r13, 4);
2992 s390_l (code, ins->dreg, 0, s390_r13, 0);
2993 break;
2994 case OP_LOADU4_MEM:
2995 g_assert_not_reached ();
2996 break;
2997 case OP_LOAD_MEMBASE:
2998 case OP_LOADI4_MEMBASE:
2999 case OP_LOADU4_MEMBASE:
3000 if (s390_is_uimm12(ins->inst_offset))
3001 s390_l (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3002 else {
3003 if (s390_is_imm16(ins->inst_offset)) {
3004 s390_lhi (code, s390_r13, ins->inst_offset);
3005 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3006 } else {
3007 s390_basr (code, s390_r13, 0);
3008 s390_j (code, 4);
3009 s390_word (code, ins->inst_offset);
3010 s390_l (code, s390_r13, 0, s390_r13, 4);
3011 s390_l (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3012 }
3013 }
3014 break;
3015 case OP_LOADU1_MEMBASE:
3016 s390_lhi (code, s390_r0, 0);
3017 if (s390_is_uimm12(ins->inst_offset))
3018 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3019 else {
3020 s390_basr (code, s390_r13, 0);
3021 s390_j (code, 4);
3022 s390_word (code, ins->inst_offset);
3023 s390_l (code, s390_r13, 0, s390_r13, 4);
3024 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3025 }
3026 s390_lr (code, ins->dreg, s390_r0);
3027 break;
3028 case OP_LOADI1_MEMBASE:
3029 s390_lhi (code, s390_r0, 0);
3030 if (s390_is_uimm12(ins->inst_offset))
3031 s390_ic (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3032 else {
3033 s390_basr (code, s390_r13, 0);
3034 s390_j (code, 4);
3035 s390_word (code, ins->inst_offset);
3036 s390_l (code, s390_r13, 0, s390_r13, 4);
3037 s390_ic (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3038 }
3039 s390_lhi (code, s390_r13, 0x80);
3040 s390_nr (code, s390_r13, s390_r0);
3041 s390_jz (code, 5);
3042 s390_lhi (code, s390_r13, 0xff00);
3043 s390_or (code, s390_r0, s390_r13);
3044 s390_lr (code, ins->dreg, s390_r0);
3045 break;
3046 case OP_LOADU2_MEMBASE:
3047 s390_lhi (code, s390_r0, 0);
3048 if (s390_is_uimm12(ins->inst_offset))
3049 s390_icm (code, s390_r0, 3, ins->inst_basereg, ins->inst_offset);
3050 else {
3051 s390_basr (code, s390_r13, 0);
3052 s390_j (code, 4);
3053 s390_word (code, ins->inst_offset);
3054 s390_l (code, s390_r13, 0, s390_r13, 4);
3055 s390_ar (code, s390_r13, ins->inst_basereg);
3056 s390_icm (code, s390_r0, 3, s390_r13, 0);
3057 }
3058 s390_lr (code, ins->dreg, s390_r0);
3059 break;
3060 case OP_LOADI2_MEMBASE:
3061 s390_lhi (code, s390_r0, 0);
3062 if (s390_is_uimm12(ins->inst_offset))
3063 s390_lh (code, s390_r0, 0, ins->inst_basereg, ins->inst_offset);
3064 else {
3065 s390_basr (code, s390_r13, 0);
3066 s390_j (code, 4);
3067 s390_word (code, ins->inst_offset);
3068 s390_l (code, s390_r13, 0, s390_r13, 4);
3069 s390_lh (code, s390_r0, s390_r13, ins->inst_basereg, 0);
3070 }
3071 s390_lr (code, ins->dreg, s390_r0);
3072 break;
3073 case CEE_CONV_I1:
3074 s390_lhi (code, s390_r0, 0x80);
3075 if (ins->dreg != ins->sreg1) {
3076 s390_lr (code, ins->dreg, ins->sreg1);
3077 }
3078 s390_nr (code, s390_r0, ins->sreg1);
3079 s390_jl (code, 9);
3080 s390_lhi (code, s390_r13, -1);
3081 s390_sll (code, s390_r13, 0, 8);
3082 s390_or (code, ins->dreg, s390_r13);
3083 break;
3084 case CEE_CONV_I2:
3085 s390_lhi (code, s390_r0, 0x80);
3086 s390_lr (code, ins->dreg, ins->sreg1);
3087 s390_nr (code, s390_r0, ins->sreg1);
3088 s390_jl (code, 9);
3089 s390_lhi (code, s390_r13, -1);
3090 s390_sll (code, s390_r13, 0, 16);
3091 s390_or (code, ins->dreg, s390_r13);
3092 break;
3093 case CEE_CONV_U1:
3094 s390_lhi (code, s390_r0, 0xff);
3095 if (ins->dreg != ins->sreg1) {
3096 s390_lr (code, ins->dreg, ins->sreg1);
3097 }
3098 s390_nr (code, ins->dreg, s390_r0);
3099 break;
3100 case CEE_CONV_U2:
3101 s390_lhi (code, s390_r0, -1);
3102 s390_sll (code, s390_r0, 0, 16);
3103 s390_srl (code, s390_r0, 0, 16);
3104 if (ins->dreg != ins->sreg1) {
3105 s390_lr (code, ins->dreg, ins->sreg1);
3106 }
3107 s390_nr (code, ins->dreg, s390_r0);
3108 break;
3109 case OP_COMPARE:
3110 if ((ins->next) &&
3111 ((ins->next->opcode >= CEE_BNE_UN) &&
3112 (ins->next->opcode <= CEE_BLT_UN)))
3113 s390_clr (code, ins->sreg1, ins->sreg2);
3114 else
3115 s390_cr (code, ins->sreg1, ins->sreg2);
3116 break;
3117 case OP_COMPARE_IMM:
3118 if (s390_is_imm16 (ins->inst_imm)) {
3119 s390_lhi (code, s390_r0, ins->inst_imm);
3120 if ((ins->next) &&
3121 ((ins->next->opcode >= CEE_BNE_UN) &&
3122 (ins->next->opcode <= CEE_BLT_UN)))
3123 s390_clr (code, ins->sreg1, s390_r0);
3124 else
3125 s390_cr (code, ins->sreg1, s390_r0);
3126 }
3127 else {
3128 s390_basr (code, s390_r13, 0);
3129 s390_j (code, 4);
3130 s390_word (code, ins->inst_imm);
3131 if ((ins->next) &&
3132 ((ins->next->opcode >= CEE_BNE_UN) &&
3133 (ins->next->opcode <= CEE_BLT_UN)))
3134 s390_cl (code, ins->sreg1, 0, s390_r13, 4);
3135 else
3136 s390_c (code, ins->sreg1, 0, s390_r13, 4);
3137 }
3138 break;
3139 case OP_X86_TEST_NULL:
3140 s390_ltr (code, ins->sreg1, ins->sreg1);
3141 break;
3142 case CEE_BREAK:
3143 s390_break (code);
3144 break;
3145 case OP_ADDCC:
3146 if (ins->dreg != ins->sreg1) {
3147 s390_lr (code, ins->dreg, ins->sreg1);
3148 }
3149 s390_alr (code, ins->dreg, ins->sreg2);
3150 break;
3151 case CEE_ADD:
3152 if (ins->dreg != ins->sreg1) {
3153 s390_lr (code, ins->dreg, ins->sreg1);
3154 }
3155 s390_ar (code, ins->dreg, ins->sreg2);
3156 break;
3157 case OP_ADC:
3158 if (ins->dreg != ins->sreg1) {
3159 s390_lr (code, ins->dreg, ins->sreg1);
3160 }
3161 s390_alcr (code, ins->dreg, ins->sreg2);
3162 break;
3163 case OP_ADD_IMM:
3164 if ((ins->next) &&
3165 (ins->next->opcode == OP_ADC_IMM)) {
3166 s390_basr (code, s390_r13, 0);
3167 s390_j (code, 4);
3168 s390_word (code, ins->inst_imm);
3169 if (ins->dreg != ins->sreg1) {
3170 s390_lr (code, ins->dreg, ins->sreg1);
3171 }
3172 s390_al (code, ins->dreg, 0, s390_r13, 4);
3173 } else {
3174 if (s390_is_imm16 (ins->inst_imm)) {
3175 if (ins->dreg != ins->sreg1) {
3176 s390_lr (code, ins->dreg, ins->sreg1);
3177 }
3178 s390_ahi (code, ins->dreg, ins->inst_imm);
3179 } else {
3180 s390_basr (code, s390_r13, 0);
3181 s390_j (code, 4);
3182 s390_word (code, ins->inst_imm);
3183 if (ins->dreg != ins->sreg1) {
3184 s390_lr (code, ins->dreg, ins->sreg1);
3185 }
3186 s390_a (code, ins->dreg, 0, s390_r13, 4);
3187 }
3188 }
3189 break;
3190 case OP_ADC_IMM:
3191 if (s390_is_imm16 (ins->inst_imm)) {
3192 if (ins->dreg != ins->sreg1) {
3193 s390_lr (code, ins->dreg, ins->sreg1);
3194 }
3195 s390_lhi (code, s390_r0, ins->inst_imm);
3196 s390_alcr (code, ins->dreg, s390_r0);
3197 } else {
3198 s390_basr (code, s390_r13, 0);
3199 s390_j (code, 4);
3200 s390_word (code, ins->inst_imm);
3201 s390_l (code, s390_r13, 0, s390_r13, 4);
3202 s390_alcr (code, ins->dreg, s390_r13);
3203 }
3204 break;
3205 case OP_SUBCC:
3206 if (ins->dreg != ins->sreg1) {
3207 s390_lr (code, ins->dreg, ins->sreg1);
3208 }
3209 s390_sr (code, ins->dreg, ins->sreg2);
3210 break;
3211 case CEE_SUB:
3212 if (ins->dreg != ins->sreg1) {
3213 s390_lr (code, ins->dreg, ins->sreg1);
3214 }
3215 s390_sr (code, ins->dreg, ins->sreg2);
3216 break;
3217 case OP_SBB:
3218 if (ins->dreg != ins->sreg1) {
3219 s390_lr (code, ins->dreg, ins->sreg1);
3220 }
3221 s390_slbr (code, ins->dreg, ins->sreg2);
3222 break;
3223 case OP_SUB_IMM:
3224 if (s390_is_imm16 (-ins->inst_imm)) {
3225 if (ins->dreg != ins->sreg1) {
3226 s390_lr (code, ins->dreg, ins->sreg1);
3227 }
3228 s390_ahi (code, ins->dreg, -ins->inst_imm);
3229 } else {
3230 s390_basr (code, s390_r13, 0);
3231 s390_j (code, 4);
3232 s390_word (code, ins->inst_imm);
3233 if (ins->dreg != ins->sreg1) {
3234 s390_lr (code, ins->dreg, ins->sreg1);
3235 }
3236 s390_s (code, ins->dreg, 0, s390_r13, 4);
3237 }
3238 break;
3239 case OP_SBB_IMM:
3240 s390_basr (code, s390_r13, 0);
3241 s390_j (code, 4);
3242 s390_word (code, ins->inst_imm);
3243 s390_sl (code, ins->dreg, 0, s390_r13, 4);
3244 break;
3245 case CEE_AND:
3246 if (ins->sreg1 == ins->dreg) {
3247 s390_nr (code, ins->dreg, ins->sreg2);
3248 }
3249 else {
3250 if (ins->sreg2 == ins->dreg) {
3251 s390_nr (code, ins->dreg, ins->sreg1);
3252 }
3253 else {
3254 s390_lr (code, ins->dreg, ins->sreg1);
3255 s390_nr (code, ins->dreg, ins->sreg2);
3256 }
3257 }
3258 break;
3259 case OP_AND_IMM:
3260 if (s390_is_imm16 (ins->inst_imm)) {
3261 s390_lhi (code, s390_r0, ins->inst_imm);
3262 if (ins->dreg != ins->sreg1) {
3263 s390_lr (code, ins->dreg, ins->sreg1);
3264 }
3265 s390_nr (code, ins->dreg, s390_r0);
3266 } else {
3267 s390_basr (code, s390_r13, 0);
3268 s390_j (code, 4);
3269 s390_word (code, ins->inst_imm);
3270 if (ins->dreg != ins->sreg1) {
3271 s390_lr (code, ins->dreg, ins->sreg1);
3272 }
3273 s390_n (code, ins->dreg, 0, s390_r13, 4);
3274 }
3275 break;
3276 case CEE_DIV:
3277 s390_lr (code, s390_r0, ins->sreg1);
3278 s390_srda (code, s390_r0, 0, 32);
3279 s390_dr (code, s390_r0, ins->sreg2);
3280 s390_lr (code, ins->dreg, s390_r1);
3281 break;
3282 case CEE_DIV_UN:
3283 s390_lr (code, s390_r0, ins->sreg1);
3284 s390_srdl (code, s390_r0, 0, 32);
3285 s390_dlr (code, s390_r0, ins->sreg2);
3286 s390_lr (code, ins->dreg, s390_r1);
3287 break;
3288 case OP_DIV_IMM:
3289 if (s390_is_imm16 (ins->inst_imm)) {
3290 s390_lhi (code, s390_r13, ins->inst_imm);
3291 s390_lr (code, s390_r0, ins->sreg1);
3292 } else {
3293 s390_basr (code, s390_r13, 0);
3294 s390_j (code, 4);
3295 s390_word (code, ins->inst_imm);
3296 s390_lr (code, s390_r0, ins->sreg1);
3297 s390_l (code, s390_r13, 0, s390_r13, 4);
3298 }
3299 s390_srda (code, s390_r0, 0, 32);
3300 s390_dr (code, s390_r0, ins->sreg2);
3301 s390_lr (code, ins->dreg, s390_r1);
3302 break;
3303 case CEE_REM:
3304 s390_lr (code, s390_r0, ins->sreg1);
3305 s390_srda (code, s390_r0, 0, 32);
3306 s390_dr (code, s390_r0, ins->sreg2);
3307 s390_lr (code, ins->dreg, s390_r0);
3308 break;
3309 case CEE_REM_UN:
3310 s390_lr (code, s390_r0, ins->sreg1);
3311 s390_srdl (code, s390_r0, 0, 32);
3312 s390_dlr (code, s390_r0, ins->sreg2);
3313 s390_lr (code, ins->dreg, s390_r0);
3314 break;
3315 case OP_REM_IMM:
3316 if (s390_is_imm16 (ins->inst_imm)) {
3317 s390_lhi (code, s390_r13, ins->inst_imm);
3318 s390_lr (code, s390_r0, ins->sreg1);
3319 } else {
3320 s390_basr (code, s390_r13, 0);
3321 s390_j (code, 4);
3322 s390_word (code, ins->inst_imm);
3323 s390_lr (code, s390_r0, ins->sreg1);
3324 s390_l (code, s390_r13, 0, s390_r13, 4);
3325 }
3326 s390_srda (code, s390_r0, 0, 32);
3327 s390_dr (code, s390_r0, ins->sreg2);
3328 s390_lr (code, ins->dreg, s390_r0);
3329 break;
3330 case CEE_OR:
3331 if (ins->sreg1 == ins->dreg) {
3332 s390_or (code, ins->dreg, ins->sreg2);
3333 }
3334 else {
3335 if (ins->sreg2 == ins->dreg) {
3336 s390_or (code, ins->dreg, ins->sreg1);
3337 }
3338 else {
3339 s390_lr (code, ins->dreg, ins->sreg1);
3340 s390_or (code, ins->dreg, ins->sreg2);
3341 }
3342 }
3343 break;
3344 case OP_OR_IMM:
3345 if (s390_is_imm16 (ins->inst_imm)) {
3346 s390_lhi (code, s390_r0, ins->inst_imm);
3347 if (ins->dreg != ins->sreg1) {
3348 s390_lr (code, ins->dreg, ins->sreg1);
3349 }
3350 s390_or (code, ins->dreg, s390_r0);
3351 } else {
3352 s390_bras (code, s390_r13, 4);
3353 s390_word (code, ins->inst_imm);
3354 if (ins->dreg != ins->sreg1) {
3355 s390_lr (code, ins->dreg, ins->sreg1);
3356 }
3357 s390_o (code, ins->dreg, 0, s390_r13, 0);
3358 }
3359 break;
3360 case CEE_XOR:
3361 if (ins->sreg1 == ins->dreg) {
3362 s390_xr (code, ins->dreg, ins->sreg2);
3363 }
3364 else {
3365 if (ins->sreg2 == ins->dreg) {
3366 s390_xr (code, ins->dreg, ins->sreg1);
3367 }
3368 else {
3369 s390_lr (code, ins->dreg, ins->sreg1);
3370 s390_xr (code, ins->dreg, ins->sreg2);
3371 }
3372 }
3373 break;
3374 case OP_XOR_IMM:
3375 if (s390_is_imm16 (ins->inst_imm)) {
3376 s390_lhi (code, s390_r0, ins->inst_imm);
3377 if (ins->dreg != ins->sreg1) {
3378 s390_lr (code, ins->dreg, ins->sreg1);
3379 }
3380 s390_xr (code, ins->dreg, s390_r0);
3381 } else {
3382 s390_basr (code, s390_r13, 0);
3383 s390_j (code, 4);
3384 s390_word (code, ins->inst_imm);
3385 if (ins->dreg != ins->sreg1) {
3386 s390_lr (code, ins->dreg, ins->sreg1);
3387 }
3388 s390_x (code, ins->dreg, 0, s390_r13, 4);
3389 }
3390 break;
3391 case CEE_SHL:
3392 if (ins->sreg1 != ins->dreg) {
3393 s390_lr (code, ins->dreg, ins->sreg1);
3394 }
3395 s390_sll (code, ins->dreg, ins->sreg2, 0);
3396 break;
3397 case OP_SHL_IMM:
3398 if (ins->sreg1 != ins->dreg) {
3399 s390_lr (code, ins->dreg, ins->sreg1);
3400 }
3401 s390_sll (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3402 break;
3403 case CEE_SHR:
3404 if (ins->sreg1 != ins->dreg) {
3405 s390_lr (code, ins->dreg, ins->sreg1);
3406 }
3407 s390_sra (code, ins->dreg, ins->sreg2, 0);
3408 break;
3409 case OP_SHR_IMM:
3410 if (ins->sreg1 != ins->dreg) {
3411 s390_lr (code, ins->dreg, ins->sreg1);
3412 }
3413 s390_sra (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3414 break;
3415 case OP_SHR_UN_IMM:
3416 if (ins->sreg1 != ins->dreg) {
3417 s390_lr (code, ins->dreg, ins->sreg1);
3418 }
3419 s390_srl (code, ins->dreg, 0, (ins->inst_imm & 0x1f));
3420 break;
3421 case CEE_SHR_UN:
3422 if (ins->sreg1 != ins->dreg) {
3423 s390_lr (code, ins->dreg, ins->sreg1);
3424 }
3425 s390_srl (code, ins->dreg, ins->sreg2, 0);
3426 break;
3427 case CEE_NOT:
3428 if (ins->sreg1 != ins->dreg) {
3429 s390_lr (code, ins->dreg, ins->sreg1);
3430 }
3431 s390_lhi (code, s390_r0, -1);
3432 s390_xr (code, ins->dreg, s390_r0);
3433 break;
3434 case CEE_NEG:
3435 s390_lcr (code, ins->dreg, ins->sreg1);
3436 break;
3437 case CEE_MUL:
3438 if (ins->sreg1 == ins->dreg) {
3439 s390_msr (code, ins->dreg, ins->sreg2);
3440 }
3441 else {
3442 if (ins->sreg2 == ins->dreg) {
3443 s390_msr (code, ins->dreg, ins->sreg1);
3444 }
3445 else {
3446 s390_lr (code, ins->dreg, ins->sreg1);
3447 s390_msr (code, ins->dreg, ins->sreg2);
3448 }
3449 }
3450 break;
3451 case OP_MUL_IMM:
3452 if (s390_is_imm16 (ins->inst_imm)) {
3453 s390_lhi (code, s390_r13, ins->inst_imm);
3454 } else {
3455 s390_basr (code, s390_r13, 0);
3456 s390_j (code, 4);
3457 s390_word (code, ins->inst_imm);
3458 if (ins->dreg != ins->sreg1) {
3459 s390_lr (code, ins->dreg, ins->sreg1);
3460 }
3461 s390_l (code, s390_r13, 0, s390_r13, 4);
3462 }
3463 s390_msr (code, ins->dreg, s390_r13);
3464 break;
3465 case CEE_MUL_OVF:
3466 s390_lhi (code, s390_r0, 0);
3467 s390_lr (code, s390_r1, ins->sreg1);
3468 s390_mr (code, s390_r0, ins->sreg2);
3469 s390_ltr (code, s390_r0, s390_r0);
3470 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3471 s390_lr (code, ins->dreg, s390_r1);
3472 break;
3473 case CEE_MUL_OVF_UN:
3474 s390_lhi (code, s390_r0, 0);
3475 s390_lr (code, s390_r1, ins->sreg1);
3476 s390_mlr (code, s390_r0, ins->sreg2);
3477 s390_ltr (code, s390_r0, s390_r0);
3478 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NZ, "OverflowException");
3479 s390_lr (code, ins->dreg, s390_r1);
3480 break;
3481 case OP_LMUL:
3482 s390_l (code, s390_r0, 0, ins->sreg1, 4);
3483 s390_lr (code, s390_r14, s390_r0);
3484 s390_srda (code, s390_r0, 0, 32);
3485 s390_m (code, s390_r0, 0, ins->sreg2, 4);
3486 s390_srl (code, s390_r14, 0, 31);
3487 s390_a (code, s390_r14, 0, ins->sreg1, 0);
3488 s390_l (code, s390_r13, 0, ins->sreg2, 0);
3489 s390_srl (code, s390_r13, 0, 31);
3490 s390_ms (code, s390_r13, 0, ins->sreg1, 4);
3491 s390_ar (code, s390_r14, s390_r13);
3492 s390_st (code, s390_r14, 0, ins->dreg, 0);
3493 s390_st (code, s390_r1, 0, ins->dreg, 4);
3494 break;
3495 case OP_ICONST:
3496 case OP_SETREGIMM:
3497 if (s390_is_imm16(ins->inst_c0)) {
3498 s390_lhi (code, ins->dreg, ins->inst_c0);
3499 } else {
3500 s390_basr (code, s390_r13, 0);
3501 s390_j (code, 4);
3502 s390_word (code, ins->inst_c0);
3503 s390_l (code, ins->dreg, 0, s390_r13, 4);
3504 }
3505 break;
3506 case OP_AOTCONST:
3507 s390_basr (code, s390_r13, 0);
3508 s390_j (code, 4);
3509 mono_add_patch_info (cfg, code - cfg->native_code,
3510 (MonoJumpInfoType)ins->inst_i1, ins->inst_p0);
3511 s390_word (code, 0);
3512 s390_l (code,ins->dreg, 0, s390_r13, 4);
3513 break;
3514 case CEE_CONV_I4:
3515 case CEE_CONV_U4:
3516 case OP_MOVE:
3517 case OP_SETREG:
3518 if (ins->dreg != ins->sreg1) {
3519 s390_lr (code, ins->dreg, ins->sreg1);
3520 }
3521 break;
3522 case OP_SETLRET: {
3523 int saved = ins->sreg1;
3524 if (ins->sreg1 == s390_r2) {
3525 s390_lr (code, s390_r0, ins->sreg1);
3526 saved = s390_r0;
3527 }
3528 if (ins->sreg2 != s390_r2)
3529 s390_lr (code, s390_r2, ins->sreg2);
3530 if (saved != s390_r3)
3531 s390_lr (code, s390_r3, saved);
3532 break;
3533 }
3534 case OP_SETFREG:
3535 case OP_FMOVE:
3536 if (ins->dreg != ins->sreg1) {
3537 s390_ldr (code, ins->dreg, ins->sreg1);
3538 }
3539 break;
3540 case OP_FCONV_TO_R4:
3541 s390_ledbr (code, ins->dreg, ins->sreg1);
3542 break;
3543 case CEE_JMP:
3544 g_assert_not_reached ();
3545 break;
3546 case OP_CHECK_THIS:
3547 /* ensure ins->sreg1 is not NULL */
3548 s390_icm (code, s390_r0, 15, ins->sreg1, 0);
3549 break;
3550 case OP_FCALL:
3551 case OP_LCALL:
3552 case OP_VCALL:
3553 case OP_VOIDCALL:
3554 case CEE_CALL:
3555 call = (MonoCallInst*)ins;
3556 if (ins->flags & MONO_INST_HAS_METHOD)
3557 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_METHOD, call->method);
3558 else
3559 mono_add_patch_info (cfg, offset, MONO_PATCH_INFO_ABS, call->fptr);
3560 s390_brasl (code, s390_r14, 0);
3561 break;
3562 case OP_FCALL_REG:
3563 case OP_LCALL_REG:
3564 case OP_VCALL_REG:
3565 case OP_VOIDCALL_REG:
3566 case OP_CALL_REG:
3567 s390_lr (code, s390_r1, ins->sreg1);
3568 s390_basr (code, s390_r14, s390_r1);
3569 break;
3570 case OP_FCALL_MEMBASE:
3571 case OP_LCALL_MEMBASE:
3572 case OP_VCALL_MEMBASE:
3573 case OP_VOIDCALL_MEMBASE:
3574 case OP_CALL_MEMBASE:
3575 s390_l (code, s390_r1, 0, ins->sreg1, ins->inst_offset);
3576 s390_basr (code, s390_r14, s390_r1);
3577 break;
3578 case OP_OUTARG:
3579 g_assert_not_reached ();
3580 break;
3581 case OP_LOCALLOC:
3582 s390_lr (code, s390_r1, ins->sreg1);
3583 s390_ahi (code, s390_r1, 14);
3584 s390_srl (code, s390_r1, 0, 3);
3585 s390_sll (code, s390_r1, 0, 3);
3586 s390_l (code, s390_r13, 0, STK_BASE, 0);
3587 s390_lcr (code, s390_r1, s390_r1);
3588 s390_la (code, STK_BASE, STK_BASE, s390_r1, 0);
3589 s390_st (code, s390_r13, 0, STK_BASE, 0);
3590 s390_la (code, ins->dreg, 0, STK_BASE, S390_MINIMAL_STACK_SIZE+7);
3591 s390_srl (code, ins->dreg, 0, 3);
3592 s390_sll (code, ins->dreg, 0, 3);
3593 break;
3594 case CEE_RET:
3595 s390_br (code, s390_r14);
3596 break;
3597 case CEE_THROW: {
3598 s390_lr (code, s390_r2, ins->sreg1);
3599 mono_add_patch_info (cfg, code-cfg->native_code, MONO_PATCH_INFO_INTERNAL_METHOD,
3600 (gpointer)"mono_arch_throw_exception");
3601 s390_brasl (code, s390_r14, 0);
3602 break;
3603 }
3604 case OP_START_HANDLER:
3605 s390_lr (code, s390_r0, s390_r14);
3606 s390_st (code, s390_r0, 0, ins->inst_left->inst_basereg, ins->inst_left->inst_offset);
3607 break;
3608 case OP_ENDFILTER:
3609 if (ins->sreg1 != s390_r2)
3610 s390_lr (code, s390_r2, ins->sreg1);
3611 s390_l (code, STK_BASE, 0, STK_BASE, 0);
3612 s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
3613 s390_br (code, s390_r14);
3614 break;
3615 case CEE_ENDFINALLY:
3616 s390_l (code, s390_r14, 0, ins->inst_left->inst_basereg, ins->inst_left->inst_offset);
3617 s390_br (code, s390_r14);
3618 break;
3619 case OP_CALL_HANDLER:
3620 mono_add_patch_info (cfg, code-cfg->native_code,
3621 MONO_PATCH_INFO_BB, ins->inst_target_bb);
3622 s390_brasl (code, s390_r14, 0);
3623 break;
3624 case OP_LABEL:
3625 ins->inst_c0 = code - cfg->native_code;
3626 break;
3627 case CEE_BR:
3628 EMIT_UNCOND_BRANCH(ins);
3629 break;
3630 case OP_BR_REG:
3631 s390_br (code, ins->sreg1);
3632 break;
3633 case OP_CEQ:
3634 s390_lhi (code, ins->dreg, 1);
3635 s390_jz (code, 4);
3636 s390_lhi (code, ins->dreg, 0);
3637 break;
3638 case OP_CLT:
3639 s390_lhi (code, ins->dreg, 1);
3640 s390_jl (code, 4);
3641 s390_lhi (code, ins->dreg, 0);
3642 break;
3643 case OP_CLT_UN:
3644 s390_lhi (code, ins->dreg, 1);
3645 s390_jlo (code, 4);
3646 s390_lhi (code, ins->dreg, 0);
3647 break;
3648 case OP_CGT:
3649 s390_lhi (code, ins->dreg, 1);
3650 s390_jh (code, 4);
3651 s390_lhi (code, ins->dreg, 0);
3652 break;
3653 case OP_CGT_UN:
3654 s390_lhi (code, ins->dreg, 1);
3655 s390_jho (code, 4);
3656 s390_lhi (code, ins->dreg, 0);
3657 break;
3658 case OP_COND_EXC_EQ:
3659 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_EQ, ins->inst_p1);
3660 break;
3661 case OP_COND_EXC_NE_UN:
3662 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NE, ins->inst_p1);
3663 break;
3664 case OP_COND_EXC_LT:
3665 case OP_COND_EXC_LT_UN:
3666 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LT, ins->inst_p1);
3667 break;
3668 case OP_COND_EXC_GT:
3669 case OP_COND_EXC_GT_UN:
3670 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GT, ins->inst_p1);
3671 break;
3672 case OP_COND_EXC_GE:
3673 case OP_COND_EXC_GE_UN:
3674 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_GE, ins->inst_p1);
3675 break;
3676 case OP_COND_EXC_LE:
3677 case OP_COND_EXC_LE_UN:
3678 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_LE, ins->inst_p1);
3679 break;
3680 case OP_COND_EXC_OV:
3681 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_OV, ins->inst_p1);
3682 break;
3683 case OP_COND_EXC_NO:
3684 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NO, ins->inst_p1);
3685 break;
3686 case OP_COND_EXC_C:
3687 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_CY, ins->inst_p1);
3688 break;
3689 case OP_COND_EXC_NC:
3690 EMIT_COND_SYSTEM_EXCEPTION (S390_CC_NC, ins->inst_p1);
3691 break;
3692 case CEE_BEQ:
3693 EMIT_COND_BRANCH (ins, S390_CC_EQ);
3694 break;
3695 case CEE_BNE_UN:
3696 EMIT_COND_BRANCH (ins, S390_CC_NE);
3697 break;
3698 case CEE_BLT:
3699 case CEE_BLT_UN:
3700 EMIT_COND_BRANCH (ins, S390_CC_LT);
3701 break;
3702 case CEE_BGT:
3703 case CEE_BGT_UN:
3704 EMIT_COND_BRANCH (ins, S390_CC_GT);
3705 break;
3706 case CEE_BGE:
3707 case CEE_BGE_UN:
3708 EMIT_COND_BRANCH (ins, S390_CC_GE);
3709 break;
3710 case CEE_BLE:
3711 case CEE_BLE_UN:
3712 EMIT_COND_BRANCH (ins, S390_CC_LE);
3713 break;
3714
3715 /* floating point opcodes */
3716 case OP_R8CONST:
3717 if (*((float *) ins->inst_p0) == 0) {
3718 s390_lzdr (code, ins->dreg);
3719 } else {
3720 s390_basr (code, s390_r13, 0);
3721 s390_j (code, 4);
3722 s390_word (code, ins->inst_p0);
3723 s390_l (code, s390_r13, 0, s390_r13, 4);
3724 s390_ld (code, ins->dreg, 0, s390_r13, 0);
3725 }
3726 break;
3727 case OP_R4CONST:
3728 if (*((float *) ins->inst_p0) == 0) {
3729 s390_lzer (code, ins->dreg);
3730 } else {
3731 s390_basr (code, s390_r13, 0);
3732 s390_j (code, 4);
3733 s390_word (code, ins->inst_p0);
3734 s390_l (code, s390_r13, 0, s390_r13, 4);
3735 s390_le (code, ins->dreg, 0, s390_r13, 0);
3736 s390_ldebr(code, ins->dreg, ins->dreg);
3737 }
3738 break;
3739 case OP_STORER8_MEMBASE_REG:
3740 if (s390_is_uimm12(ins->inst_offset)) {
3741 s390_std (code, ins->sreg1, 0, ins->inst_destbasereg, ins->inst_offset);
3742 } else {
3743 s390_basr (code, s390_r13, 0);
3744 s390_j (code, 4);
3745 s390_word (code, ins->inst_offset);
3746 s390_l (code, s390_r13, 0, s390_r13, 4);
3747 s390_std (code, ins->sreg1, s390_r13, ins->inst_destbasereg, 0);
3748 }
3749 break;
3750 case OP_LOADR8_MEMBASE:
3751 if (s390_is_uimm12(ins->inst_offset)) {
3752 s390_ld (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3753 } else {
3754 s390_basr (code, s390_r13, 0);
3755 s390_j (code, 4);
3756 s390_word (code, ins->inst_offset);
3757 s390_l (code, s390_r13, 0, s390_r13, 4);
3758 s390_ld (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3759 }
3760 break;
3761 case OP_STORER4_MEMBASE_REG:
3762 if (s390_is_uimm12(ins->inst_offset)) {
3763 s390_ledbr(code, s390_f0, ins->sreg1);
3764 s390_ste (code, s390_f0, 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_ledbr(code, s390_f0, ins->sreg1);
3771 s390_ste (code, s390_f0, s390_r13, ins->inst_destbasereg, 0);
3772 }
3773 break;
3774 case OP_LOADR4_MEMBASE:
3775 if (s390_is_uimm12(ins->inst_offset)) {
3776 s390_le (code, ins->dreg, 0, ins->inst_basereg, ins->inst_offset);
3777 } else {
3778 s390_basr (code, s390_r13, 0);
3779 s390_j (code, 4);
3780 s390_word (code, ins->inst_offset);
3781 s390_l (code, s390_r13, 0, s390_r13, 4);
3782 s390_le (code, ins->dreg, s390_r13, ins->inst_basereg, 0);
3783 }
3784 s390_ldebr (code, ins->dreg, ins->dreg);
3785 break;
3786 case CEE_CONV_R_UN:
3787 s390_cdfbr (code, ins->dreg, ins->sreg1);
3788 s390_ltr (code, ins->sreg1, ins->sreg1);
3789 s390_jnl (code, 12);
3790 s390_basr (code, s390_r13, 0);
3791 s390_j (code, 6);
3792 s390_word (code, 0x41f00000);
3793 s390_word (code, 0);
3794 s390_adb (code, ins->dreg, 0, s390_r13, 4);
3795 break;
3796 case CEE_CONV_R4:
3797 s390_cefbr (code, ins->dreg, ins->sreg1);
3798 break;
3799 case CEE_CONV_R8:
3800 s390_cdfbr (code, ins->dreg, ins->sreg1);
3801 break;
3802 case OP_FCONV_TO_I1:
3803 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, TRUE);
3804 break;
3805 case OP_FCONV_TO_U1:
3806 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 1, FALSE);
3807 break;
3808 case OP_FCONV_TO_I2:
3809 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, TRUE);
3810 break;
3811 case OP_FCONV_TO_U2:
3812 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 2, FALSE);
3813 break;
3814 case OP_FCONV_TO_I4:
3815 case OP_FCONV_TO_I:
3816 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, TRUE);
3817 break;
3818 case OP_FCONV_TO_U4:
3819 case OP_FCONV_TO_U:
3820 code = emit_float_to_int (cfg, code, ins->dreg, ins->sreg1, 4, FALSE);
3821 break;
3822 case OP_FCONV_TO_I8:
3823 case OP_FCONV_TO_U8:
3824 g_assert_not_reached ();
3825 /* Implemented as helper calls */
3826 break;
3827 case OP_LCONV_TO_R_UN:
3828 g_assert_not_reached ();
3829 /* Implemented as helper calls */
3830 break;
3831 case OP_LCONV_TO_OVF_I: {
3832 /* Valid ints: 0xffffffff:8000000 to 00000000:0x7f000000 */
3833 short int *o[5];
3834 s390_ltr (code, ins->sreg2, ins->sreg2);
3835 s390_jnl (code, 0); CODEPTR(code, o[0]);
3836 s390_ltr (code, ins->sreg1, ins->sreg1);
3837 s390_jnl (code, 0); CODEPTR(code, o[1]);
3838 s390_lhi (code, s390_r13, -1);
3839 s390_cr (code, ins->sreg1, s390_r13);
3840 s390_jnz (code, 0); CODEPTR(code, o[2]);
3841 if (ins->dreg != ins->sreg2)
3842 s390_lr (code, ins->dreg, ins->sreg2);
3843 s390_j (code, 0); CODEPTR(code, o[3]);
3844 PTRSLOT(code, o[0]);
3845 s390_jz (code, 0); CODEPTR(code, o[4]);
3846 PTRSLOT(code, o[1]);
3847 PTRSLOT(code, o[2]);
3848 mono_add_patch_info (cfg, code - cfg->native_code,
3849 MONO_PATCH_INFO_EXC, "OverflowException");
3850 s390_brasl (code, s390_r14, 0);
3851 PTRSLOT(code, o[3]);
3852 PTRSLOT(code, o[4]);
3853 break;
3854 }
3855 case OP_SQRT:
3856 s390_sqdbr (code, ins->dreg, ins->sreg1);
3857 break;
3858 case OP_FADD:
3859 if (ins->dreg == ins->sreg1)
3860 s390_adbr (code, ins->dreg, ins->sreg2);
3861 else {
3862 if (ins->dreg == ins->sreg2)
3863 s390_adbr (code, ins->dreg, ins->sreg1);
3864 else {
3865 s390_ldr (code, ins->dreg, ins->sreg1);
3866 s390_adbr (code, ins->dreg, ins->sreg2);
3867 }
3868 }
3869 break;
3870 case OP_FSUB:
3871 if (ins->dreg == ins->sreg1)
3872 s390_sdbr (code, ins->dreg, ins->sreg2);
3873 else {
3874 s390_ldr (code, ins->dreg, ins->sreg1);
3875 s390_sdbr (code, ins->dreg, ins->sreg2);
3876 }
3877 break;
3878 case OP_FMUL:
3879 if (ins->dreg == ins->sreg1)
3880 s390_mdbr (code, ins->dreg, ins->sreg2);
3881 else {
3882 if (ins->dreg == ins->sreg2)
3883 s390_mdbr (code, ins->dreg, ins->sreg1);
3884 else {
3885 s390_ldr (code, ins->dreg, ins->sreg1);
3886 s390_mdbr (code, ins->dreg, ins->sreg2);
3887 }
3888 }
3889 break;
3890 case OP_FDIV:
3891 if (ins->dreg == ins->sreg1)
3892 s390_ddbr (code, ins->dreg, ins->sreg2);
3893 else {
3894 s390_ldr (code, ins->dreg, ins->sreg1);
3895 s390_ddbr (code, ins->dreg, ins->sreg2);
3896 }
3897 break;
3898 case OP_FNEG:
3899 s390_lcdbr (code, ins->dreg, ins->sreg1);
3900 break;
3901 case OP_FREM:
3902 if (ins->dreg != ins->sreg1) {
3903 s390_ldr (code, ins->dreg, ins->sreg1);
3904 }
3905 s390_didbr (code, ins->dreg, ins->sreg2, 5, s390_f15);
3906 break;
3907 case OP_FCOMPARE:
3908 s390_cdbr (code, ins->sreg1, ins->sreg2);
3909 break;
3910 case OP_FCEQ:
3911 s390_cdbr (code, ins->sreg1, ins->sreg2);
3912 s390_lhi (code, ins->dreg, 1);
3913 s390_je (code, 4);
3914 s390_lhi (code, ins->dreg, 0);
3915 break;
3916 case OP_FCLT:
3917 s390_cdbr (code, ins->sreg1, ins->sreg2);
3918 s390_lhi (code, ins->dreg, 1);
3919 s390_jl (code, 4);
3920 s390_lhi (code, ins->dreg, 0);
3921 break;
3922 case OP_FCLT_UN:
3923 s390_cdbr (code, ins->sreg1, ins->sreg2);
3924 s390_lhi (code, ins->dreg, 1);
3925 s390_jlo (code, 4);
3926 s390_lhi (code, ins->dreg, 0);
3927 break;
3928 case OP_FCGT:
3929 s390_cdbr (code, ins->sreg1, ins->sreg2);
3930 s390_lhi (code, ins->dreg, 1);
3931 s390_jh (code, 4);
3932 s390_lhi (code, ins->dreg, 0);
3933 break;
3934 case OP_FCGT_UN:
3935 s390_cdbr (code, ins->sreg1, ins->sreg2);
3936 s390_lhi (code, ins->dreg, 1);
3937 s390_jho (code, 4);
3938 s390_lhi (code, ins->dreg, 0);
3939 break;
3940 case OP_FBEQ:
3941 EMIT_COND_BRANCH (ins, S390_CC_EQ|S390_CC_OV);
3942 break;
3943 case OP_FBNE_UN:
3944 EMIT_COND_BRANCH (ins, S390_CC_NE|S390_CC_OV);
3945 break;
3946 case OP_FBLT:
3947 EMIT_COND_BRANCH (ins, S390_CC_LT);
3948 break;
3949 case OP_FBLT_UN:
3950 EMIT_COND_BRANCH (ins, S390_CC_LT|S390_CC_OV);
3951 break;
3952 case OP_FBGT:
3953 EMIT_COND_BRANCH (ins, S390_CC_GT);
3954 break;
3955 case OP_FBGT_UN:
3956 EMIT_COND_BRANCH (ins, S390_CC_GT|S390_CC_OV);
3957 break;
3958 case OP_FBGE:
3959 EMIT_COND_BRANCH (ins, S390_CC_GE);
3960 break;
3961 case OP_FBGE_UN:
3962 EMIT_COND_BRANCH (ins, S390_CC_GE|S390_CC_OV);
3963 break;
3964 case OP_FBLE:
3965 EMIT_COND_BRANCH (ins, S390_CC_LE);
3966 break;
3967 case OP_FBLE_UN:
3968 EMIT_COND_BRANCH (ins, S390_CC_LE|S390_CC_OV);
3969 break;
3970 case CEE_CKFINITE: {
3971 short *o;
3972 s390_lhi (code, s390_r13, 0xfc0);
3973 s390_tcdb (code, ins->sreg1, 0, s390_r13, 0);
3974 s390_jz (code, 0); CODEPTR(code, o);
3975 mono_add_patch_info (cfg, code - cfg->native_code + 2,
3976 MONO_PATCH_INFO_EXC, "ArithmeticException");
3977 s390_brasl (code, s390_r14,0);
3978 PTRSLOT(code, o);
3979 break;
3980 }
3981 default:
3982 g_warning ("unknown opcode %s in %s()\n", mono_inst_name (ins->opcode), __FUNCTION__);
3983 g_assert_not_reached ();
3984 }
3985
3986 if ((cfg->opt & MONO_OPT_BRANCH) && ((code - cfg->native_code - offset) > max_len)) {
3987 g_warning ("wrong maximal instruction length of instruction %s (expected %d, got %d)",
3988 mono_inst_name (ins->opcode), max_len, code - cfg->native_code - offset);
3989 g_assert_not_reached ();
3990 }
3991
3992 cpos += max_len;
3993
3994 last_ins = ins;
3995 last_offset = offset;
3996
3997 ins = ins->next;
3998 }
3999
4000 cfg->code_len = code - cfg->native_code;
4001 }
4002
4003 /*========================= End of Function ========================*/
4004
4005 /*------------------------------------------------------------------*/
4006 /* */
4007 /* Name - mono_arch_register_lowlevel_calls */
4008 /* */
4009 /* Function - Register routines to help with --trace operation. */
4010 /* */
4011 /*------------------------------------------------------------------*/
4012
4013 void
4014 mono_arch_register_lowlevel_calls (void)
4015 {
4016 mono_register_jit_icall (enter_method, "mono_enter_method", NULL, TRUE);
4017 mono_register_jit_icall (leave_method, "mono_leave_method", NULL, TRUE);
4018 }
4019
4020 /*========================= End of Function ========================*/
4021
4022 /*------------------------------------------------------------------*/
4023 /* */
4024 /* Name - mono_arch_patch_code */
4025 /* */
4026 /* Function - Process the patch data created during the */
4027 /* instruction build process. This resolves jumps, */
4028 /* calls, variables etc. */
4029 /* */
4030 /*------------------------------------------------------------------*/
4031
4032 void
4033 mono_arch_patch_code (MonoMethod *method, MonoDomain *domain, guint8 *code, MonoJumpInfo *ji, gboolean run_cctors)
4034 {
4035 MonoJumpInfo *patch_info;
4036
4037 for (patch_info = ji; patch_info; patch_info = patch_info->next) {
4038 unsigned char *ip = patch_info->ip.i + code;
4039 gint32 target = 0;
4040
4041 switch (patch_info->type) {
4042 case MONO_PATCH_INFO_BB:
4043 target = S390_RELATIVE((patch_info->data.bb->native_offset+code),
4044 ip);
4045 ip += 2; /* Skip over op-code */
4046 break;
4047 case MONO_PATCH_INFO_ABS:
4048 target = S390_RELATIVE(patch_info->data.target, ip);
4049 ip += 2; /* Skip over op-code */
4050 break;
4051 case MONO_PATCH_INFO_LABEL:
4052 target = S390_RELATIVE((patch_info->data.inst->inst_c0+code),ip);
4053 ip += 2; /* Skip over op-code */
4054 break;
4055 case MONO_PATCH_INFO_IP:
4056 target = ip;
4057 continue;
4058 case MONO_PATCH_INFO_METHOD_REL:
4059 g_assert_not_reached ();
4060 *((gpointer *)(ip)) = code + patch_info->data.offset;
4061 continue;
4062 case MONO_PATCH_INFO_INTERNAL_METHOD: {
4063 MonoJitICallInfo *mi = mono_find_jit_icall_by_name (patch_info->data.name);
4064 if (!mi) {
4065 g_warning ("unknown MONO_PATCH_INFO_INTERNAL_METHOD %s", patch_info->data.name);
4066 g_assert_not_reached ();
4067 }
4068 target = S390_RELATIVE(mono_icall_get_wrapper (mi), ip);
4069 ip += 2; /* Skip over op-code */
4070 break;
4071 }
4072 case MONO_PATCH_INFO_METHOD_JUMP:
4073 g_assert_not_reached ();
4074 break;
4075 case MONO_PATCH_INFO_METHOD:
4076 if (patch_info->data.method == method) {
4077 target = S390_RELATIVE(code, ip);
4078 } else {
4079 /* get the trampoline to the method from the domain */
4080 target = S390_RELATIVE(mono_arch_create_jit_trampoline (patch_info->data.method), ip);
4081 target = mono_arch_create_jit_trampoline(patch_info->data.method);
4082 target = S390_RELATIVE(target, ip);
4083 }
4084 ip += 2; /* Skip over op-code */
4085 break;
4086 case MONO_PATCH_INFO_SWITCH: {
4087 gpointer *table = (gpointer *)patch_info->data.target;
4088 int i;
4089 /*------------------------------------------------------*/
4090 /* ip is pointing at the basr r13,0/j +4 instruction */
4091 /* the vtable value follows this (i.e. ip+6) */
4092 /*------------------------------------------------------*/
4093 *((gconstpointer *)(ip+6)) = table;
4094
4095 for (i = 0; i < patch_info->table_size; i++) {
4096 table [i] = (int)patch_info->data.table [i] + code;
4097 }
4098 continue;
4099 }
4100 case MONO_PATCH_INFO_METHODCONST:
4101 case MONO_PATCH_INFO_CLASS:
4102 case MONO_PATCH_INFO_IMAGE:
4103 case MONO_PATCH_INFO_FIELD:
4104 target = S390_RELATIVE(patch_info->data.target, ip);
4105 continue;
4106 case MONO_PATCH_INFO_R4:
4107 case MONO_PATCH_INFO_R8:
4108 g_assert_not_reached ();
4109 *((gconstpointer *)(ip + 2)) = patch_info->data.target;
4110 continue;
4111 case MONO_PATCH_INFO_IID:
4112 mono_class_init (patch_info->data.klass);
4113 target = S390_RELATIVE(patch_info->data.klass->interface_id, ip);
4114 continue;
4115 case MONO_PATCH_INFO_VTABLE:
4116 target = S390_RELATIVE(mono_class_vtable (domain, patch_info->data.klass),ip);
4117 ip += 2;
4118 continue;
4119 case MONO_PATCH_INFO_CLASS_INIT:
4120 target = S390_RELATIVE(mono_create_class_init_trampoline (mono_class_vtable (domain, patch_info->data.klass)), ip);
4121 ip += 2;
4122 break;
4123 case MONO_PATCH_INFO_SFLDA: {
4124 MonoVTable *vtable = mono_class_vtable (domain, patch_info->data.field->parent);
4125 if (!vtable->initialized && !(vtable->klass->flags & TYPE_ATTRIBUTE_BEFORE_FIELD_INIT) && mono_class_needs_cctor_run (vtable->klass, method))
4126 /* Done by the generated code */
4127 ;
4128 else {
4129 if (run_cctors)
4130 mono_runtime_class_init (vtable);
4131 }
4132 target = S390_RELATIVE((char*)vtable->data + patch_info->data.field->offset, ip);
4133 ip += 2;
4134 continue;
4135 }
4136 case MONO_PATCH_INFO_EXC_NAME:
4137 *((gconstpointer *)(ip)) = patch_info->data.name;
4138 continue;
4139 case MONO_PATCH_INFO_LDSTR:
4140 target = mono_ldstr (domain, patch_info->data.token->image,
4141 mono_metadata_token_index (patch_info->data.token->token));
4142 continue;
4143 case MONO_PATCH_INFO_TYPE_FROM_HANDLE: {
4144 gpointer handle;
4145 MonoClass *handle_class;
4146
4147 handle = mono_ldtoken (patch_info->data.token->image,
4148 patch_info->data.token->token,
4149 &handle_class, NULL);
4150 mono_class_init (handle_class);
4151 mono_class_init (mono_class_from_mono_type (handle));
4152
4153 target = handle;
4154 continue;
4155 }
4156 case MONO_PATCH_INFO_LDTOKEN: {
4157 gpointer handle;
4158 MonoClass *handle_class;
4159
4160 handle = mono_ldtoken (patch_info->data.token->image,
4161 patch_info->data.token->token,
4162 &handle_class, NULL);
4163 mono_class_init (handle_class);
4164
4165 target = handle;
4166 continue;
4167 }
4168 case MONO_PATCH_INFO_EXC:
4169 /* everything is dealt with at epilog output time */
4170 continue;
4171 default:
4172 g_assert_not_reached ();
4173 }
4174 s390_patch (ip, target);
4175 }
4176 }
4177
4178 /*========================= End of Function ========================*/
4179
4180 /*------------------------------------------------------------------*/
4181 /* */
4182 /* Name - mono_arch_max_epilog_size */
4183 /* */
4184 /* Function - Determine the maximum size of the epilog code. */
4185 /* */
4186 /*------------------------------------------------------------------*/
4187
4188 int
4189 mono_arch_max_epilog_size (MonoCompile *cfg)
4190 {
4191 int max_epilog_size = 96;
4192 MonoJumpInfo *patch_info;
4193
4194 if (cfg->method->save_lmf)
4195 max_epilog_size += 128;
4196
4197 if (mono_jit_trace_calls != NULL)
4198 max_epilog_size += 128;
4199
4200 if (cfg->prof_options & MONO_PROFILE_ENTER_LEAVE)
4201 max_epilog_size += 128;
4202
4203 /* count the number of exception infos */
4204
4205 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4206 if (patch_info->type == MONO_PATCH_INFO_EXC)
4207 max_epilog_size += 26;
4208 }
4209
4210 return max_epilog_size;
4211 }
4212
4213 /*========================= End of Function ========================*/
4214
4215 /*------------------------------------------------------------------*/
4216 /* */
4217 /* Name - mono_arch_emit_prolog */
4218 /* */
4219 /* Function - Create the instruction sequence for a function */
4220 /* prolog. */
4221 /* */
4222 /*------------------------------------------------------------------*/
4223
4224 guint8 *
4225 mono_arch_emit_prolog (MonoCompile *cfg)
4226 {
4227 MonoMethod *method = cfg->method;
4228 MonoBasicBlock *bb;
4229 MonoMethodSignature *sig;
4230 MonoInst *inst;
4231 int alloc_size, pos, max_offset, i, lmfOffset;
4232 guint8 *code;
4233 CallInfo *cinfo;
4234 size_data sz;
4235 int tracing = 0;
4236
4237 if (mono_jit_trace_calls != NULL && mono_trace_eval (method))
4238 tracing = 1;
4239
4240 cfg->code_size = 256;
4241 cfg->native_code = code = g_malloc (cfg->code_size);
4242
4243 s390_stm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4244
4245 if (cfg->flags & MONO_CFG_HAS_ALLOCA) {
4246 cfg->used_int_regs |= 1 << 11;
4247 }
4248
4249 alloc_size = cfg->stack_offset;
4250 // if (tracing)
4251 // alloc_size += S390_TRACE_STACK_SIZE;
4252 // pos = 0;
4253 /* reserve room to save return value */
4254 // if (tracing)
4255 // pos += 8;
4256
4257 // alloc_size += pos;
4258
4259 // if (method->save_lmf)
4260 // alloc_size += sizeof(MonoLMF);
4261
4262 // alloc_size = S390_ALIGN(alloc_size, S390_STACK_ALIGNMENT);
4263
4264 cfg->stack_usage = alloc_size;
4265 s390_lr (code, s390_r11, STK_BASE);
4266 if (s390_is_imm16 (-alloc_size)) {
4267 s390_ahi (code, STK_BASE, -alloc_size);
4268 } else {
4269 int stackSize = alloc_size;
4270 while (stackSize > 32767) {
4271 s390_ahi (code, STK_BASE, -32767);
4272 stackSize -= 32767;
4273 }
4274 s390_ahi (code, STK_BASE, -stackSize);
4275 }
4276 s390_st (code, s390_r11, 0, STK_BASE, 0);
4277
4278 if (cfg->flags & MONO_CFG_HAS_ALLOCA)
4279 s390_lr (code, s390_r11, STK_BASE);
4280
4281 /* compute max_offset in order to use short forward jumps
4282 * we always do it on s390 because the immediate displacement
4283 * for jumps is too small
4284 */
4285 max_offset = 0;
4286 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
4287 MonoInst *ins = bb->code;
4288 bb->max_offset = max_offset;
4289
4290 if (cfg->prof_options & MONO_PROFILE_COVERAGE)
4291 max_offset += 6;
4292
4293 while (ins) {
4294 max_offset += ((guint8 *)ins_spec [ins->opcode])[MONO_INST_LEN];
4295 ins = ins->next;
4296 }
4297 }
4298
4299 /* load arguments allocated to register from the stack */
4300 sig = method->signature;
4301 pos = 0;
4302
4303 cinfo = calculate_sizes (sig, &sz, sig->pinvoke);
4304
4305 if (cinfo->struct_ret) {
4306 ArgInfo *ainfo = &cinfo->ret;
4307 inst = cfg->ret;
4308 inst->unused = ainfo->vtsize;
4309 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4310 }
4311
4312 for (i = 0; i < sig->param_count + sig->hasthis; ++i) {
4313 ArgInfo *ainfo = cinfo->args + i;
4314 inst = cfg->varinfo [pos];
4315
4316 if (inst->opcode == OP_REGVAR) {
4317 if (ainfo->regtype == RegTypeGeneral)
4318 s390_lr (code, inst->dreg, ainfo->reg);
4319 else if (ainfo->regtype == RegTypeFP) {
4320 if (ainfo->size == 4) {
4321 s390_ledbr (code, inst->dreg, ainfo->reg);
4322 } else {
4323 s390_ldr (code, inst->dreg, ainfo->reg);
4324 }
4325 }
4326 else if (ainfo->regtype == RegTypeBase) {
4327 s390_lr (code, s390_r13, STK_BASE);
4328 s390_ahi (code, s390_r13, alloc_size);
4329 s390_l (code, inst->dreg, 0, s390_r13, ainfo->offset);
4330 } else
4331 g_assert_not_reached ();
4332
4333 if (cfg->verbose_level > 2)
4334 g_print ("Argument %d assigned to register %s\n",
4335 pos, mono_arch_regname (inst->dreg));
4336 } else {
4337 if (ainfo->regtype == RegTypeGeneral) {
4338 if (!((ainfo->reg >= 2) && (ainfo->reg <= 6)))
4339 g_assert_not_reached();
4340 switch (ainfo->size) {
4341 case 1:
4342 s390_stc (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4343 break;
4344 case 2:
4345 s390_sth (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4346 break;
4347 case 8:
4348 s390_stm (code, ainfo->reg, ainfo->reg + 1,
4349 inst->inst_basereg, inst->inst_offset);
4350 break;
4351 default:
4352 s390_st (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4353 }
4354 } else if (ainfo->regtype == RegTypeBase) {
4355 } else if (ainfo->regtype == RegTypeFP) {
4356 if (ainfo->size == 8)
4357 s390_std (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4358 else if (ainfo->size == 4)
4359 s390_ste (code, ainfo->reg, 0, inst->inst_basereg, inst->inst_offset);
4360 else
4361 g_assert_not_reached ();
4362 } else if (ainfo->regtype == RegTypeStructByVal) {
4363 int doffset = inst->inst_offset;
4364 int reg;
4365 if (ainfo->reg != STK_BASE)
4366 reg = ainfo->reg;
4367 else {
4368 reg = s390_r0;
4369 s390_lr (code, s390_r13, STK_BASE);
4370 s390_ahi (code, s390_r13, alloc_size);
4371 }
4372 switch (ainfo->size) {
4373 case 1:
4374 if (ainfo->reg == STK_BASE)
4375 s390_ic (code, reg, 0, s390_r13, ainfo->offset+3);
4376 s390_stc (code, reg, 0, inst->inst_basereg, doffset);
4377 break;
4378 case 2:
4379 if (ainfo->reg == STK_BASE)
4380 s390_lh (code, reg, 0, s390_r13, ainfo->offset+2);
4381 s390_sth (code, reg, 0, inst->inst_basereg, doffset);
4382 break;
4383 case 4:
4384 if (ainfo->reg == STK_BASE)
4385 s390_l (code, reg, 0, s390_r13, ainfo->offset);
4386 s390_st (code, reg, 0, inst->inst_basereg, doffset);
4387 break;
4388 case 8:
4389 if (ainfo->reg == STK_BASE)
4390 s390_lm (code, s390_r0, s390_r1, s390_r13, ainfo->offset);
4391 s390_stm (code, reg, reg+1, inst->inst_basereg, doffset);
4392 break;
4393 }
4394 } else if (ainfo->regtype == RegTypeStructByAddr) {
4395 code = emit_memcpy (code, ainfo->vtsize,
4396 inst->inst_basereg, inst->inst_offset, ainfo->reg, 0);
4397 } else
4398 g_assert_not_reached ();
4399 }
4400 pos++;
4401 }
4402
4403 if (method->save_lmf) {
4404 /*---------------------------------------------------------------*/
4405 /* Preserve the parameter registers while we fix up the lmf */
4406 /*---------------------------------------------------------------*/
4407 s390_lr (code, s390_r7, s390_r2);
4408 s390_lr (code, s390_r8, s390_r3);
4409 s390_lr (code, s390_r9, s390_r4);
4410 s390_lr (code, s390_r10, s390_r5);
4411
4412 mono_add_patch_info (cfg, code - cfg->native_code,
4413 MONO_PATCH_INFO_INTERNAL_METHOD,
4414 (gpointer)"mono_get_lmf_addr");
4415 /*---------------------------------------------------------------*/
4416 /* On return from this call r2 have the address of the &lmf */
4417 /*---------------------------------------------------------------*/
4418 s390_brasl (code, s390_r14, 0);
4419
4420 /*---------------------------------------------------------------*/
4421 /* we build the MonoLMF structure on the stack - see mini-s390.h */
4422 /*---------------------------------------------------------------*/
4423 lmfOffset = alloc_size - sizeof(MonoLMF);
4424
4425 s390_lr (code, s390_r13, cfg->frame_reg);
4426 s390_ahi (code, s390_r13, lmfOffset);
4427
4428 /*---------------------------------------------------------------*/
4429 /* Set lmf.lmf_addr = jit_tls->lmf */
4430 /*---------------------------------------------------------------*/
4431 s390_st (code, s390_r2, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4432
4433 /*---------------------------------------------------------------*/
4434 /* Get current lmf */
4435 /*---------------------------------------------------------------*/
4436 s390_l (code, s390_r0, 0, s390_r2, 0);
4437
4438 /*---------------------------------------------------------------*/
4439 /* Set our lmf as the current lmf */
4440 /*---------------------------------------------------------------*/
4441 s390_st (code, s390_r13, 0, s390_r2, 0);
4442
4443 /*---------------------------------------------------------------*/
4444 /* Have our lmf.previous_lmf point to the last lmf */
4445 /*---------------------------------------------------------------*/
4446 s390_st (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4447
4448 /*---------------------------------------------------------------*/
4449 /* save method info */
4450 /*---------------------------------------------------------------*/
4451 s390_basr (code, s390_r1, 0);
4452 s390_j (code, 4);
4453 s390_word (code, method);
4454 s390_l (code, s390_r1, 0, s390_r1, 4);
4455 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, method));
4456
4457 /*---------------------------------------------------------------*/
4458 /* save the current IP */
4459 /*---------------------------------------------------------------*/
4460 s390_lr (code, s390_r1, cfg->frame_reg);
4461 s390_ahi (code, s390_r1, alloc_size);
4462 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, ebp));
4463 s390_l (code, s390_r1, 0, s390_r1, S390_RET_ADDR_OFFSET);
4464 s390_la (code, s390_r1, 0, s390_r1, 0);
4465 s390_st (code, s390_r1, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, eip));
4466
4467 /*---------------------------------------------------------------*/
4468 /* Restore the parameter registers now that we've set up the lmf */
4469 /*---------------------------------------------------------------*/
4470 s390_lr (code, s390_r2, s390_r7);
4471 s390_lr (code, s390_r3, s390_r8);
4472 s390_lr (code, s390_r4, s390_r9);
4473 s390_lr (code, s390_r5, s390_r10);
4474 }
4475
4476 if (tracing)
4477 code = mono_arch_instrument_prolog (cfg, enter_method, code, TRUE);
4478
4479 cfg->code_len = code - cfg->native_code;
4480 g_free (cinfo);
4481
4482 return code;
4483 }
4484
4485 /*========================= End of Function ========================*/
4486
4487 /*------------------------------------------------------------------*/
4488 /* */
4489 /* Name - mono_arch_emit_epilog */
4490 /* */
4491 /* Function - Emit the instructions for a function epilog. */
4492 /* */
4493 /*------------------------------------------------------------------*/
4494
4495 void
4496 mono_arch_emit_epilog (MonoCompile *cfg)
4497 {
4498 MonoJumpInfo *patch_info;
4499 MonoMethod *method = cfg->method;
4500 MonoMethodSignature *sig = method->signature;
4501 MonoInst *inst;
4502 int i, lmfOffset, tracing = 0;
4503 guint8 *code;
4504
4505 code = cfg->native_code + cfg->code_len;
4506
4507 if (mono_jit_trace_calls != NULL && mono_trace_eval (method)) {
4508 code = mono_arch_instrument_epilog (cfg, leave_method, code, TRUE);
4509 tracing = 1;
4510 }
4511
4512 if (method->save_lmf) {
4513 s390_lr (code, s390_r13, cfg->frame_reg);
4514
4515 lmfOffset = cfg->stack_usage - sizeof(MonoLMF);
4516
4517 /*-------------------------------------------------*/
4518 /* r13 = my lmf */
4519 /*-------------------------------------------------*/
4520 s390_ahi (code, s390_r13, lmfOffset);
4521
4522 /*-------------------------------------------------*/
4523 /* r6 = &jit_tls->lmf */
4524 /*-------------------------------------------------*/
4525 s390_l (code, s390_r6, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, lmf_addr));
4526
4527 /*-------------------------------------------------*/
4528 /* r0 = lmf.previous_lmf */
4529 /*-------------------------------------------------*/
4530 s390_l (code, s390_r0, 0, s390_r13, G_STRUCT_OFFSET(MonoLMF, previous_lmf));
4531
4532 /*-------------------------------------------------*/
4533 /* jit_tls->lmf = previous_lmf */
4534 /*-------------------------------------------------*/
4535 s390_l (code, s390_r13, 0, s390_r6, 0);
4536 s390_st (code, s390_r0, 0, s390_r6, 0);
4537 }
4538
4539 if (cfg->frame_reg != STK_BASE)
4540 s390_lr (code, STK_BASE, cfg->frame_reg);
4541
4542 s390_ahi (code, STK_BASE, cfg->stack_usage);
4543 s390_lm (code, s390_r6, s390_r14, STK_BASE, S390_REG_SAVE_OFFSET);
4544 s390_br (code, s390_r14);
4545
4546 /* add code to raise exceptions */
4547 for (patch_info = cfg->patch_info; patch_info; patch_info = patch_info->next) {
4548 switch (patch_info->type) {
4549 case MONO_PATCH_INFO_EXC: {
4550 /*-----------------------------------------------------*/
4551 /* Patch the branch in epilog to come here */
4552 /*-----------------------------------------------------*/
4553 s390_patch (patch_info->ip.i+cfg->native_code+2,
4554 S390_RELATIVE(code,patch_info->ip.i+cfg->native_code));
4555 /*-----------------------------------------------------*/
4556 /* Patch the parameter passed to the handler */
4557 /*-----------------------------------------------------*/
4558 s390_basr (code, s390_r13, 0);
4559 s390_j (code, 4);
4560 mono_add_patch_info (cfg, code - cfg->native_code,
4561 MONO_PATCH_INFO_EXC_NAME,
4562 patch_info->data.target);
4563 s390_word (code, 0);
4564 /*-----------------------------------------------------*/
4565 /* Load the return address and the parameter register */
4566 /*-----------------------------------------------------*/
4567 s390_larl (code, s390_r14, S390_RELATIVE((patch_info->ip.i +
4568 cfg->native_code + 8), code));
4569 s390_l (code, s390_r2, 0, s390_r13, 4);
4570 /*-----------------------------------------------------*/
4571 /* Reuse the current patch to set the jump */
4572 /*-----------------------------------------------------*/
4573 patch_info->type = MONO_PATCH_INFO_INTERNAL_METHOD;
4574 patch_info->data.name = "mono_arch_throw_exception_by_name";
4575 patch_info->ip.i = code - cfg->native_code;
4576 s390_jcl (code, S390_CC_UN, 0);
4577 break;
4578 }
4579 default:
4580 /* do nothing */
4581 break;
4582 }
4583 }
4584
4585 cfg->code_len = code - cfg->native_code;
4586
4587 g_assert (cfg->code_len < cfg->code_size);
4588
4589 }
4590
4591 /*========================= End of Function ========================*/
4592
4593 /*------------------------------------------------------------------*/
4594 /* */
4595 /* Name - mono_arch_setup_jit_tls_data */
4596 /* */
4597 /* Function - Setup the JIT's Thread Level Specific Data. */
4598 /* */
4599 /*------------------------------------------------------------------*/
4600
4601 void
4602 mono_arch_setup_jit_tls_data (MonoJitTlsData *tls)
4603 {
4604 }
4605
4606 /*========================= End of Function ========================*/
4607
4608 /*------------------------------------------------------------------*/
4609 /* */
4610 /* Name - mono_arch_free_jit_tls_data */
4611 /* */
4612 /* Function - Free tls data. */
4613 /* */
4614 /*------------------------------------------------------------------*/
4615
4616 void
4617 mono_arch_free_jit_tls_data (MonoJitTlsData *tls)
4618 {
4619 }
4620
4621 /*========================= End of Function ========================*/
4622
4623 /*------------------------------------------------------------------*/
4624 /* */
4625 /* Name - mono_arch_emit_this_vret_args */
4626 /* */
4627 /* Function - */
4628 /* */
4629 /*------------------------------------------------------------------*/
4630
4631 void
4632 mono_arch_emit_this_vret_args (MonoCompile *cfg, MonoCallInst *inst, int this_reg, int this_type, int vt_reg)
4633 {
4634 int this_dreg = s390_r2;
4635
4636 if (vt_reg != -1)
4637 this_dreg = s390_r3;
4638
4639 /* add the this argument */
4640 if (this_reg != -1) {
4641 MonoInst *this;
4642 MONO_INST_NEW (cfg, this, OP_SETREG);
4643 this->type = this_type;
4644 this->sreg1 = this_reg;
4645 this->dreg = this_dreg;
4646 mono_bblock_add_inst (cfg->cbb, this);
4647 }
4648
4649 if (vt_reg != -1) {
4650 MonoInst *vtarg;
4651 MONO_INST_NEW (cfg, vtarg, OP_SETREG);
4652 vtarg->type = STACK_MP;
4653 vtarg->sreg1 = vt_reg;
4654 vtarg->dreg = s390_r2;
4655 mono_bblock_add_inst (cfg->cbb, vtarg);
4656 }
4657 }
4658
4659 /*========================= End of Function ========================*/
4660
4661 /*------------------------------------------------------------------*/
4662 /* */
4663 /* Name - mono_arch_get_opcode_for_method */
4664 /* */
4665 /* Function - Check for opcodes we can handle directly in */
4666 /* hardware. */
4667 /* */
4668 /*------------------------------------------------------------------*/
4669
4670 gint
4671 mono_arch_get_opcode_for_method (MonoCompile *cfg, MonoMethod *cmethod, MonoMethodSignature *fsig, MonoInst **args)
4672 {
4673 if (cmethod->klass == mono_defaults.math_class) {
4674 if (strcmp (cmethod->name, "Sqrt") == 0)
4675 return OP_SQRT;
4676 }
4677 return -1;
4678 }
4679
4680 /*========================= End of Function ========================*/
4681
4682 /*------------------------------------------------------------------*/
4683 /* */
4684 /* Name - mono_arch_print_tree */
4685 /* */
4686 /* Function - Print platform-specific opcode details. */
4687 /* */
4688 /* Returns - 1 - opcode details have been printed */
4689 /* 0 - opcode details have not been printed */
4690 /* */
4691 /*------------------------------------------------------------------*/
4692
4693 gboolean
4694 mono_arch_print_tree (MonoInst *tree, int arity)
4695 {
4696 gboolean done;
4697
4698 switch (tree->opcode) {
4699 case OP_S390_LOADARG:
4700 case OP_S390_ARGPTR:
4701 case OP_S390_STKARG:
4702 printf ("[0x%x(%s)]", tree->inst_offset,
4703 mono_arch_regname (tree->inst_basereg));
4704 done = 1;
4705 break;
4706 default:
4707 done = 0;
4708 }
4709 return (done);
4710 }
4711
4712 /*========================= End of Function ========================*/
4713
4714 /*------------------------------------------------------------------*/
4715 /* */
4716 /* Name - mono_arch_regalloc_cost */
4717 /* */
4718 /* Function - Determine the cost, in the number of memory */
4719 /* references, of the action of allocating the var- */
4720 /* iable VMV into a register during global register */
4721 /* allocation. */
4722 /* */
4723 /* Returns - Cost */
4724 /* */
4725 /*------------------------------------------------------------------*/
4726
4727 guint32
4728 mono_arch_regalloc_cost (MonoCompile *cfg, MonoMethodVar *vmv)
4729 {
4730 /* FIXME: */
4731 return 3;
4732 }
4733
4734 /*========================= End of Function ========================*/
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