ia32_emitter.c 32.7 KB
Newer Older
1
2
3
4
5
6
/**
 * This file implements the node emitter.
 *
 * $Id$
 */

Christian Würdig's avatar
Christian Würdig committed
7
8
9
10
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

Christian Würdig's avatar
Christian Würdig committed
11
12
#include <limits.h>

13
#include "xmalloc.h"
14
15
#include "tv.h"
#include "iredges.h"
Christian Würdig's avatar
Christian Würdig committed
16
17
18
19
#include "debug.h"
#include "irgwalk.h"
#include "irprintf.h"
#include "irop_t.h"
Christian Würdig's avatar
Christian Würdig committed
20
#include "irargs_t.h"
21
#include "irprog_t.h"
22
#include "iredges_t.h"
Christian Würdig's avatar
Christian Würdig committed
23
24

#include "../besched.h"
Christian Würdig's avatar
Christian Würdig committed
25
#include "../benode_t.h"
Christian Würdig's avatar
Christian Würdig committed
26

27
#include "ia32_emitter.h"
Christian Würdig's avatar
Christian Würdig committed
28
#include "gen_ia32_emitter.h"
29
30
#include "ia32_nodes_attr.h"
#include "ia32_new_nodes.h"
Christian Würdig's avatar
Christian Würdig committed
31
32
#include "ia32_map_regs.h"

Christian Würdig's avatar
Christian Würdig committed
33
34
35
36
37
38
39
40
#ifdef obstack_chunk_alloc
# undef obstack_chunk_alloc
# define obstack_chunk_alloc xmalloc
#else
# define obstack_chunk_alloc xmalloc
# define obstack_chunk_free free
#endif

41
42
extern int obstack_printf(struct obstack *obst, char *fmt, ...);

Christian Würdig's avatar
Christian Würdig committed
43
44
#define SNPRINTF_BUF_LEN 128

Christian Würdig's avatar
Christian Würdig committed
45
static const arch_env_t *arch_env = NULL;
46

Christian Würdig's avatar
Christian Würdig committed
47
48
49
50
51
52
53
54
55
56
57
58
59
60
/*************************************************************
 *             _       _    __   _          _
 *            (_)     | |  / _| | |        | |
 *  _ __  _ __ _ _ __ | |_| |_  | |__   ___| |_ __   ___ _ __
 * | '_ \| '__| | '_ \| __|  _| | '_ \ / _ \ | '_ \ / _ \ '__|
 * | |_) | |  | | | | | |_| |   | | | |  __/ | |_) |  __/ |
 * | .__/|_|  |_|_| |_|\__|_|   |_| |_|\___|_| .__/ \___|_|
 * | |                                       | |
 * |_|                                       |_|
 *************************************************************/

/* We always pass the ir_node which is a pointer. */
static int ia32_get_arg_type(const lc_arg_occ_t *occ) {
	return lc_arg_type_ptr;
61
62
}

Christian Würdig's avatar
Christian Würdig committed
63
64

/**
Christian Würdig's avatar
Christian Würdig committed
65
 * Returns the register at in position pos.
Christian Würdig's avatar
Christian Würdig committed
66
 */
Christian Würdig's avatar
Christian Würdig committed
67
static const arch_register_t *get_in_reg(const ir_node *irn, int pos) {
Christian Würdig's avatar
Christian Würdig committed
68
69
70
71
72
73
74
75
76
	ir_node                *op;
	const arch_register_t  *reg = NULL;

	assert(get_irn_arity(irn) > pos && "Invalid IN position");

	/* The out register of the operator at position pos is the
	   in register we need. */
	op = get_irn_n(irn, pos);

Christian Würdig's avatar
Christian Würdig committed
77
	reg = arch_get_irn_register(arch_env, op);
Christian Würdig's avatar
Christian Würdig committed
78

Christian Würdig's avatar
Christian Würdig committed
79
80
81
82
83
84
85
	assert(reg && "no in register found");
	return reg;
}

/**
 * Returns the register at out position pos.
 */
Christian Würdig's avatar
Christian Würdig committed
86
static const arch_register_t *get_out_reg(const ir_node *irn, int pos) {
Christian Würdig's avatar
Christian Würdig committed
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
	ir_node                *proj;
	const arch_register_t  *reg = NULL;

	/* 1st case: irn is not of mode_T, so it has only                 */
	/*           one OUT register -> good                             */
	/* 2nd case: irn is of mode_T -> collect all Projs and ask the    */
	/*           Proj with the corresponding projnum for the register */

	if (get_irn_mode(irn) != mode_T) {
		reg = arch_get_irn_register(arch_env, irn);
	}
	else if (is_ia32_irn(irn)) {
		reg = get_ia32_out_reg(irn, pos);
	}
	else {
		const ir_edge_t *edge;

		foreach_out_edge(irn, edge) {
			proj = get_edge_src_irn(edge);
			assert(is_Proj(proj) && "non-Proj from mode_T node");
			if (get_Proj_proj(proj) == pos) {
				reg = arch_get_irn_register(arch_env, proj);
				break;
			}
		}
	}

	assert(reg && "no out register found");
Christian Würdig's avatar
Christian Würdig committed
115
116
117
	return reg;
}

Michael Beck's avatar
Michael Beck committed
118
119
120
121
122
enum io_direction {
  IN_REG,
  OUT_REG
};

Christian Würdig's avatar
Christian Würdig committed
123
124
125
/**
 * Returns the name of the in register at position pos.
 */
Michael Beck's avatar
Michael Beck committed
126
static const char *get_ia32_reg_name(ir_node *irn, int pos, enum io_direction in_out) {
Christian Würdig's avatar
Christian Würdig committed
127
128
	const arch_register_t *reg;

Michael Beck's avatar
Michael Beck committed
129
	if (in_out == IN_REG) {
Christian Würdig's avatar
Christian Würdig committed
130
131
132
		reg = get_in_reg(irn, pos);
	}
	else {
Christian Würdig's avatar
Christian Würdig committed
133
		/* destination address mode nodes don't have outputs */
134
		if (is_ia32_irn(irn) && get_ia32_op_type(irn) == ia32_AddrModeD) {
Christian Würdig's avatar
Christian Würdig committed
135
136
137
			return "MEM";
		}

Christian Würdig's avatar
Christian Würdig committed
138
139
140
141
		reg = get_out_reg(irn, pos);
	}

	return arch_register_get_name(reg);
Christian Würdig's avatar
Christian Würdig committed
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
}

/**
 * Get the register name for a node.
 */
static int ia32_get_reg_name(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
	const char *buf;
	ir_node    *X  = arg->v_ptr;
	int         nr = occ->width - 1;

	if (!X)
		return lc_arg_append(app, occ, "(null)", 6);

Christian Würdig's avatar
Christian Würdig committed
157
	buf = get_ia32_reg_name(X, nr, occ->conversion == 'S' ? IN_REG : OUT_REG);
Christian Würdig's avatar
Christian Würdig committed
158
159

	return lc_arg_append(app, occ, buf, strlen(buf));
160
161
}

Christian Würdig's avatar
Christian Würdig committed
162
/**
163
 * Returns the tarval, offset or scale of an ia32 as a string.
Christian Würdig's avatar
Christian Würdig committed
164
165
166
167
168
169
170
171
172
173
 */
static int ia32_const_to_str(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
	const char *buf;
	ir_node    *X = arg->v_ptr;

	if (!X)
		return lc_arg_append(app, occ, "(null)", 6);

174
	if (occ->conversion == 'C') {
Christian Würdig's avatar
Christian Würdig committed
175
		buf = get_ia32_cnst(X);
Christian Würdig's avatar
Christian Würdig committed
176
	}
177
	else { /* 'O' */
Christian Würdig's avatar
Christian Würdig committed
178
		buf = get_ia32_am_offs(X);
Christian Würdig's avatar
Christian Würdig committed
179
180
	}

Sebastian Hack's avatar
Sebastian Hack committed
181
	return buf ? lc_arg_append(app, occ, buf, strlen(buf)) : 0;
Christian Würdig's avatar
Christian Würdig committed
182
183
184
185
186
187
188
189
}

/**
 * Determines the SSE suffix depending on the mode.
 */
static int ia32_get_mode_suffix(lc_appendable_t *app,
    const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
Christian Würdig's avatar
Christian Würdig committed
190
	ir_node *X    = arg->v_ptr;
191
192
193
194
195
	ir_mode *mode = get_irn_mode(X);

	if (mode == mode_T) {
		mode = is_ia32_AddrModeS(X) || is_ia32_AddrModeD(X) ? get_ia32_ls_mode(X) : get_ia32_res_mode(X);
	}
Christian Würdig's avatar
Christian Würdig committed
196
197
198
199

	if (!X)
		return lc_arg_append(app, occ, "(null)", 6);

Christian Würdig's avatar
Christian Würdig committed
200
201
202
203
204
205
206
	if (mode_is_float(mode)) {
		return lc_appendable_chadd(app, get_mode_size_bits(mode) == 32 ? 's' : 'd');
	}
	else {

		return lc_appendable_chadd(app, mode_is_signed(mode) ? 's' : 'z');
	}
Christian Würdig's avatar
Christian Würdig committed
207
208
209
210
211
212
213
}

/**
 * Return the ia32 printf arg environment.
 * We use the firm environment with some additional handlers.
 */
const lc_arg_env_t *ia32_get_arg_env(void) {
Christian Würdig's avatar
Christian Würdig committed
214
	static lc_arg_env_t *env = NULL;
Christian Würdig's avatar
Christian Würdig committed
215

Christian Würdig's avatar
Christian Würdig committed
216
217
218
	static const lc_arg_handler_t ia32_reg_handler   = { ia32_get_arg_type, ia32_get_reg_name };
	static const lc_arg_handler_t ia32_const_handler = { ia32_get_arg_type, ia32_const_to_str };
	static const lc_arg_handler_t ia32_mode_handler  = { ia32_get_arg_type, ia32_get_mode_suffix };
Christian Würdig's avatar
Christian Würdig committed
219

Christian Würdig's avatar
Christian Würdig committed
220
221
222
	if(env == NULL) {
		/* extend the firm printer */
		env = firm_get_arg_env();
Christian Würdig's avatar
Christian Würdig committed
223

224
225
226
227
228
		lc_arg_register(env, "ia32:sreg", 'S', &ia32_reg_handler);
		lc_arg_register(env, "ia32:dreg", 'D', &ia32_reg_handler);
		lc_arg_register(env, "ia32:cnst", 'C', &ia32_const_handler);
		lc_arg_register(env, "ia32:offs", 'O', &ia32_const_handler);
		lc_arg_register(env, "ia32:mode", 'M', &ia32_mode_handler);
Christian Würdig's avatar
Christian Würdig committed
229
	}
Christian Würdig's avatar
Christian Würdig committed
230

Christian Würdig's avatar
Christian Würdig committed
231
	return env;
Christian Würdig's avatar
Christian Würdig committed
232
233
}

Christian Würdig's avatar
Christian Würdig committed
234
235
236
/**
 * Emits registers and/or address mode of a binary operation.
 */
237
char *ia32_emit_binop(const ir_node *n, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
238
	static char *buf = NULL;
Christian Würdig's avatar
Christian Würdig committed
239

Christian Würdig's avatar
Christian Würdig committed
240
241
242
	/* verify that this function is never called on non-AM supporting operations */
	assert(get_ia32_am_support(n) != ia32_am_None && "emit binop expects addressmode support");

Christian Würdig's avatar
Christian Würdig committed
243
244
#define PRODUCES_RESULT(n) !(is_ia32_St(n) || is_ia32_CondJmp(n) || is_ia32_fCondJmp(n) || is_ia32_SwitchJmp(n))

Christian Würdig's avatar
Christian Würdig committed
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
	if (! buf) {
		buf = xcalloc(1, SNPRINTF_BUF_LEN);
	}
	else {
		memset(buf, 0, SNPRINTF_BUF_LEN);
	}

	switch(get_ia32_op_type(n)) {
		case ia32_Normal:
			if (get_ia32_cnst(n)) {
				lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%3S, %s", n, get_ia32_cnst(n));
			}
			else {
				const arch_register_t *in1 = get_in_reg(n, 2);
				const arch_register_t *in2 = get_in_reg(n, 3);
Christian Würdig's avatar
Christian Würdig committed
260
				const arch_register_t *out = PRODUCES_RESULT(n) ? get_out_reg(n, 0) : NULL;
Christian Würdig's avatar
Christian Würdig committed
261
262
263
264
265
266
267
268
269
270
				const arch_register_t *in;

				in  = out ? (REGS_ARE_EQUAL(out, in2) ? in1 : in2) : in2;
				out = out ? out : in1;

				snprintf(buf, SNPRINTF_BUF_LEN, "%s, %s", \
					arch_register_get_name(out), arch_register_get_name(in));
			}
			break;
		case ia32_AddrModeS:
271
			lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%4S, %s", n, ia32_emit_am(n, env));
Christian Würdig's avatar
Christian Würdig committed
272
273
274
			break;
		case ia32_AddrModeD:
			if (get_ia32_cnst(n)) {
275
				lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%s, %s", ia32_emit_am(n, env), get_ia32_cnst(n));
Christian Würdig's avatar
Christian Würdig committed
276
277
			}
			else {
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
				const arch_register_t *in1 = get_in_reg(n, 2);
				const char *reg_name;
				ir_mode *mode = get_ia32_res_mode(n);

				mode = mode ? mode : get_ia32_ls_mode(n);

				switch(get_mode_size_bits(mode)) {
					case 8:
						reg_name = ia32_get_mapped_reg_name(env->isa->regs_8bit, in1);
						break;
					case 16:
						reg_name = ia32_get_mapped_reg_name(env->isa->regs_16bit, in1);
						break;
					case 32:
						reg_name = arch_register_get_name(in1);
						break;
					default:
						assert(0 && "unsupported mode size");
						break;
				}

				lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%s, %s", ia32_emit_am(n, env), reg_name);
Christian Würdig's avatar
Christian Würdig committed
300
301
302
303
304
305
			}
			break;
		default:
			assert(0 && "unsupported op type");
	}

Christian Würdig's avatar
Christian Würdig committed
306
307
#undef PRODUCES_RESULT

Christian Würdig's avatar
Christian Würdig committed
308
309
310
311
312
313
	return buf;
}

/**
 * Emits registers and/or address mode of a unary operation.
 */
314
char *ia32_emit_unop(const ir_node *n, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
315
316
317
318
319
320
321
322
323
324
325
326
327
328
	static char *buf = NULL;

	if (! buf) {
		buf = xcalloc(1, SNPRINTF_BUF_LEN);
	}
	else {
		memset(buf, 0, SNPRINTF_BUF_LEN);
	}

	switch(get_ia32_op_type(n)) {
		case ia32_Normal:
			lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%1D", n);
			break;
		case ia32_am_Dest:
329
			snprintf(buf, SNPRINTF_BUF_LEN, ia32_emit_am(n, env));
Christian Würdig's avatar
Christian Würdig committed
330
331
332
333
334
335
336
337
338
			break;
		default:
			assert(0 && "unsupported op type");
	}

	return buf;
}

/**
339
 * Emits address mode.
Christian Würdig's avatar
Christian Würdig committed
340
 */
341
char *ia32_emit_am(const ir_node *n, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
	ia32_am_flavour_t am_flav    = get_ia32_am_flavour(n);
	int               had_output = 0;
	char             *s;
	int               size;
	static struct obstack *obst  = NULL;
	ir_mode *mode = get_ia32_ls_mode(n);

	if (! is_ia32_Lea(n))
		assert(mode && "AM node must have ls_mode attribute set.");

	if (! obst) {
		obst = xcalloc(1, sizeof(*obst));
	}
	else {
		obstack_free(obst, NULL);
	}

	/* obstack_free with NULL results in an uninitialized obstack */
	obstack_init(obst);

	if (mode) {
		switch (get_mode_size_bits(mode)) {
			case 8:
Christian Würdig's avatar
Christian Würdig committed
365
				obstack_printf(obst, "BYTE ");
Christian Würdig's avatar
Christian Würdig committed
366
367
				break;
			case 16:
Christian Würdig's avatar
Christian Würdig committed
368
				obstack_printf(obst, "WORD ");
Christian Würdig's avatar
Christian Würdig committed
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
				break;
			default:
				break;
		}
	}

	obstack_printf(obst, "[");

	if (am_flav & ia32_B) {
		lc_eoprintf(ia32_get_arg_env(), obst, "%1S", n);
		had_output = 1;
	}

	if (am_flav & ia32_I) {
		if (had_output) {
			obstack_printf(obst, "+");
		}

		lc_eoprintf(ia32_get_arg_env(), obst, "%2S", n);

		if (am_flav & ia32_S) {
			obstack_printf(obst, "*%d", 1 << get_ia32_am_scale(n));
		}

		had_output = 1;
	}

	if (am_flav & ia32_O) {
		obstack_printf(obst, get_ia32_am_offs(n));
	}

	obstack_printf(obst, "] ");

	size        = obstack_object_size(obst);
	s           = obstack_finish(obst);
	s[size - 1] = '\0';

	return s;
}



Christian Würdig's avatar
Christian Würdig committed
411
412
413
414
415
416
417
418
419
/**
 * Formated print of commands and comments.
 */
static void ia32_fprintf_format(FILE *F, char *cmd_buf, char *cmnt_buf) {
	fprintf(F, "\t%-35s %-60s\n", cmd_buf, cmnt_buf);
}



Christian Würdig's avatar
Christian Würdig committed
420
/**
Christian Würdig's avatar
Christian Würdig committed
421
422
 * Add a number to a prefix. This number will not be used a second time.
 */
Christian Würdig's avatar
Christian Würdig committed
423
static char *get_unique_label(char *buf, size_t buflen, const char *prefix) {
Christian Würdig's avatar
Christian Würdig committed
424
425
426
	static unsigned long id = 0;
	snprintf(buf, buflen, "%s%lu", prefix, ++id);
	return buf;
427
428
}

Christian Würdig's avatar
Christian Würdig committed
429

Christian Würdig's avatar
Christian Würdig committed
430

Christian Würdig's avatar
Christian Würdig committed
431
432
433
434
435
436
437
438
439
440
/*************************************************
 *                 _ _                         _
 *                (_) |                       | |
 *   ___ _ __ ___  _| |_    ___ ___  _ __   __| |
 *  / _ \ '_ ` _ \| | __|  / __/ _ \| '_ \ / _` |
 * |  __/ | | | | | | |_  | (_| (_) | | | | (_| |
 *  \___|_| |_| |_|_|\__|  \___\___/|_| |_|\__,_|
 *
 *************************************************/

Christian Würdig's avatar
Christian Würdig committed
441
442
443
#undef IA32_DO_EMIT
#define IA32_DO_EMIT ia32_fprintf_format(F, cmd_buf, cmnt_buf)

444
445
446
447
/*
 * coding of conditions
 */
struct cmp2conditon_t {
Christian Würdig's avatar
Christian Würdig committed
448
449
	const char *name;
	pn_Cmp      num;
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
};

/*
 * positive conditions for signed compares
 */
static const struct cmp2conditon_t cmp2condition_s[] = {
  { NULL,              pn_Cmp_False },  /* always false */
  { "e",               pn_Cmp_Eq },     /* == */
  { "l",               pn_Cmp_Lt },     /* < */
  { "le",              pn_Cmp_Le },     /* <= */
  { "g",               pn_Cmp_Gt },     /* > */
  { "ge",              pn_Cmp_Ge },     /* >= */
  { "ne",              pn_Cmp_Lg },     /* != */
  { "ordered",         pn_Cmp_Leg },    /* Floating point: ordered */
  { "unordered",       pn_Cmp_Uo },     /* FLoting point: unordered */
  { "unordered or ==", pn_Cmp_Ue },     /* Floating point: unordered or == */
  { "unordered or <",  pn_Cmp_Ul },     /* Floating point: unordered or < */
  { "unordered or <=", pn_Cmp_Ule },    /* Floating point: unordered or <= */
  { "unordered or >",  pn_Cmp_Ug },     /* Floating point: unordered or > */
  { "unordered or >=", pn_Cmp_Uge },    /* Floating point: unordered or >= */
  { "unordered or !=", pn_Cmp_Ne },     /* Floating point: unordered or != */
  { NULL,              pn_Cmp_True },   /* always true */
};

/*
 * positive conditions for unsigned compares
 */
static const struct cmp2conditon_t cmp2condition_u[] = {
  { NULL,              pn_Cmp_False },  /* always false */
  { "e",               pn_Cmp_Eq },     /* == */
  { "b",               pn_Cmp_Lt },     /* < */
  { "be",              pn_Cmp_Le },     /* <= */
  { "a",               pn_Cmp_Gt },     /* > */
  { "ae",              pn_Cmp_Ge },     /* >= */
  { "ne",              pn_Cmp_Lg },     /* != */
  { "ordered",         pn_Cmp_Leg },    /* Floating point: ordered */
  { "unordered",       pn_Cmp_Uo },     /* FLoting point: unordered */
  { "unordered or ==", pn_Cmp_Ue },     /* Floating point: unordered or == */
  { "unordered or <",  pn_Cmp_Ul },     /* Floating point: unordered or < */
  { "unordered or <=", pn_Cmp_Ule },    /* Floating point: unordered or <= */
  { "unordered or >",  pn_Cmp_Ug },     /* Floating point: unordered or > */
  { "unordered or >=", pn_Cmp_Uge },    /* Floating point: unordered or >= */
  { "unordered or !=", pn_Cmp_Ne },     /* Floating point: unordered or != */
  { NULL,              pn_Cmp_True },   /* always true */
};

/*
 * returns the condition code
 */
Christian Würdig's avatar
Christian Würdig committed
499
static const char *get_cmp_suffix(int cmp_code, int unsigned_cmp)
500
{
Christian Würdig's avatar
Christian Würdig committed
501
502
	assert(cmp2condition_s[cmp_code].num == cmp_code);
	assert(cmp2condition_u[cmp_code].num == cmp_code);
503

Christian Würdig's avatar
Christian Würdig committed
504
	return unsigned_cmp ? cmp2condition_u[cmp_code & 7].name : cmp2condition_s[cmp_code & 7].name;
505
506
}

Christian Würdig's avatar
Christian Würdig committed
507
508
509
510
511
/**
 * Returns the target label for a control flow node.
 */
static char *get_cfop_target(const ir_node *irn, char *buf) {
	ir_node *bl = get_irn_link(irn);
512

Christian Würdig's avatar
Christian Würdig committed
513
514
515
	snprintf(buf, SNPRINTF_BUF_LEN, "BLOCK_%ld", get_irn_node_nr(bl));
	return buf;
}
516

Christian Würdig's avatar
Christian Würdig committed
517
518
519
/**
 * Emits the jump sequence for a conditional jump (cmp + jmp_true + jmp_false)
 */
Christian Würdig's avatar
Christian Würdig committed
520
static void finish_CondJmp(FILE *F, const ir_node *irn) {
Christian Würdig's avatar
Christian Würdig committed
521
522
523
	const ir_node   *proj;
	const ir_edge_t *edge;
	char buf[SNPRINTF_BUF_LEN];
Christian Würdig's avatar
Christian Würdig committed
524
525
	char cmd_buf[SNPRINTF_BUF_LEN];
	char cmnt_buf[SNPRINTF_BUF_LEN];
Christian Würdig's avatar
Christian Würdig committed
526
527
528
529
530
531

	edge = get_irn_out_edge_first(irn);
	proj = get_edge_src_irn(edge);
	assert(is_Proj(proj) && "CondJmp with a non-Proj");

	if (get_Proj_proj(proj) == 1) {
Christian Würdig's avatar
Christian Würdig committed
532
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, "j%s %s",
Christian Würdig's avatar
Christian Würdig committed
533
534
					get_cmp_suffix(get_ia32_pncode(irn), !mode_is_signed(get_irn_mode(get_irn_n(irn, 0)))),
					get_cfop_target(proj, buf));
Christian Würdig's avatar
Christian Würdig committed
535
		snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; cmp(a, b) == TRUE");
Christian Würdig's avatar
Christian Würdig committed
536
537
	}
	else  {
Christian Würdig's avatar
Christian Würdig committed
538
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jn%s %s",
Christian Würdig's avatar
Christian Würdig committed
539
540
					get_cmp_suffix(get_ia32_pncode(irn), !mode_is_signed(get_irn_mode(get_irn_n(irn, 0)))),
					get_cfop_target(proj, buf));
Christian Würdig's avatar
Christian Würdig committed
541
		snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; cmp(a, b) == FALSE");
Christian Würdig's avatar
Christian Würdig committed
542
543
	}

Christian Würdig's avatar
Christian Würdig committed
544
545
	IA32_DO_EMIT;

Christian Würdig's avatar
Christian Würdig committed
546
547
548
549
	edge = get_irn_out_edge_next(irn, edge);
	if (edge) {
		proj = get_edge_src_irn(edge);
		assert(is_Proj(proj) && "CondJmp with a non-Proj");
Christian Würdig's avatar
Christian Würdig committed
550
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(proj, buf));
Christian Würdig's avatar
Christian Würdig committed
551
		snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; otherwise");
Christian Würdig's avatar
Christian Würdig committed
552
553

		IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
554
555
556
557
	}
}

/**
Christian Würdig's avatar
Christian Würdig committed
558
 * Emits code for conditional jump.
Christian Würdig's avatar
Christian Würdig committed
559
 */
560
static void CondJmp_emitter(const ir_node *irn, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
561
	FILE *F = env->out;
Christian Würdig's avatar
Christian Würdig committed
562
563
	char cmd_buf[SNPRINTF_BUF_LEN];
	char cmnt_buf[SNPRINTF_BUF_LEN];
Christian Würdig's avatar
Christian Würdig committed
564

565
	snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cmp %s", ia32_emit_binop(irn, env));
Christian Würdig's avatar
Christian Würdig committed
566
	lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F", irn);
Christian Würdig's avatar
Christian Würdig committed
567
	IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
568
569
570
	finish_CondJmp(F, irn);
}

Christian Würdig's avatar
Christian Würdig committed
571
572
573
/**
 * Emits code for conditional jump with two variables.
 */
574
static void emit_ia32_CondJmp(const ir_node *irn, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
575
576
577
	CondJmp_emitter(irn, env);
}

Christian Würdig's avatar
Christian Würdig committed
578
579
580
/**
 * Emits code for conditional jump with immediate.
 */
581
void emit_ia32_CondJmp_i(const ir_node *irn, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
582
	CondJmp_emitter(irn, env);
Christian Würdig's avatar
Christian Würdig committed
583
584
}

Christian Würdig's avatar
Christian Würdig committed
585
586
587
588
589
590
591
592
593
594
595
596
597
598


/*********************************************************
 *                 _ _       _
 *                (_) |     (_)
 *   ___ _ __ ___  _| |_     _ _   _ _ __ ___  _ __  ___
 *  / _ \ '_ ` _ \| | __|   | | | | | '_ ` _ \| '_ \/ __|
 * |  __/ | | | | | | |_    | | |_| | | | | | | |_) \__ \
 *  \___|_| |_| |_|_|\__|   | |\__,_|_| |_| |_| .__/|___/
 *                         _/ |               | |
 *                        |__/                |_|
 *********************************************************/

/* jump table entry (target and corresponding number) */
Christian Würdig's avatar
Christian Würdig committed
599
600
601
602
603
typedef struct _branch_t {
	ir_node *target;
	int      value;
} branch_t;

Christian Würdig's avatar
Christian Würdig committed
604
/* jump table for switch generation */
Christian Würdig's avatar
Christian Würdig committed
605
typedef struct _jmp_tbl_t {
Christian Würdig's avatar
Christian Würdig committed
606
607
608
609
610
611
	ir_node  *defProj;         /**< default target */
	int       min_value;       /**< smallest switch case */
	int       max_value;       /**< largest switch case */
	int       num_branches;    /**< number of jumps */
	char     *label;           /**< label of the jump table */
	branch_t *branches;        /**< jump array */
Christian Würdig's avatar
Christian Würdig committed
612
613
} jmp_tbl_t;

Christian Würdig's avatar
Christian Würdig committed
614
615
616
/**
 * Compare two variables of type branch_t. Used to sort all switch cases
 */
Christian Würdig's avatar
Christian Würdig committed
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
static int ia32_cmp_branch_t(const void *a, const void *b) {
	branch_t *b1 = (branch_t *)a;
	branch_t *b2 = (branch_t *)b;

	if (b1->value <= b2->value)
		return -1;
	else
		return 1;
}

/**
 * Emits code for a SwitchJmp (creates a jump table if
 * possible otherwise a cmp-jmp cascade). Port from
 * cggg ia32 backend
 */
632
void emit_ia32_SwitchJmp(const ir_node *irn, ia32_emit_env_t *emit_env) {
Christian Würdig's avatar
Christian Würdig committed
633
634
635
636
637
638
639
640
	unsigned long       interval;
	char                buf[SNPRINTF_BUF_LEN];
	int                 last_value, i, pn, do_jmp_tbl = 1;
	jmp_tbl_t           tbl;
	ir_node            *proj;
	const ir_edge_t    *edge;
	const lc_arg_env_t *env = ia32_get_arg_env();
	FILE               *F   = emit_env->out;
Christian Würdig's avatar
Christian Würdig committed
641
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
Christian Würdig's avatar
Christian Würdig committed
642
643

	/* fill the table structure */
644
	tbl.label        = xmalloc(SNPRINTF_BUF_LEN);
Christian Würdig's avatar
Christian Würdig committed
645
646
647
	tbl.label        = get_unique_label(tbl.label, SNPRINTF_BUF_LEN, "JMPTBL_");
	tbl.defProj      = NULL;
	tbl.num_branches = get_irn_n_edges(irn);
648
	tbl.branches     = xcalloc(tbl.num_branches, sizeof(tbl.branches[0]));
Christian Würdig's avatar
Christian Würdig committed
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
	tbl.min_value    = INT_MAX;
	tbl.max_value    = INT_MIN;

	i = 0;
	/* go over all proj's and collect them */
	foreach_out_edge(irn, edge) {
		proj = get_edge_src_irn(edge);
		assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");

		pn = get_Proj_proj(proj);

		/* create branch entry */
		tbl.branches[i].target = proj;
		tbl.branches[i].value  = pn;

		tbl.min_value = pn < tbl.min_value ? pn : tbl.min_value;
		tbl.max_value = pn > tbl.max_value ? pn : tbl.max_value;

		/* check for default proj */
		if (pn == get_ia32_pncode(irn)) {
			assert(tbl.defProj == NULL && "found two defProjs at SwitchJmp");
			tbl.defProj = proj;
		}

		i++;
	}

	/* sort the branches by their number */
Christian Würdig's avatar
Christian Würdig committed
677
	qsort(tbl.branches, tbl.num_branches, sizeof(tbl.branches[0]), ia32_cmp_branch_t);
Christian Würdig's avatar
Christian Würdig committed
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694

	/* two-complement's magic make this work without overflow */
	interval = tbl.max_value - tbl.min_value;

	/* check value interval */
	if (interval > 16 * 1024) {
		do_jmp_tbl = 0;
	}

	/* check ratio of value interval to number of branches */
	if ((float)(interval + 1) / (float)tbl.num_branches > 8.0) {
		do_jmp_tbl = 0;
	}

	if (do_jmp_tbl) {
		/* emit the table */
		if (tbl.min_value != 0) {
Christian Würdig's avatar
Christian Würdig committed
695
			lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "cmpl %lu, -%d(%1S)",
Christian Würdig's avatar
Christian Würdig committed
696
				interval, tbl.min_value, irn);
Christian Würdig's avatar
Christian Würdig committed
697
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; first switch value is not 0");
Christian Würdig's avatar
Christian Würdig committed
698
699

			IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
700
701
		}
		else {
Christian Würdig's avatar
Christian Würdig committed
702
			lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "cmpl %lu, %1S", interval, irn);
Christian Würdig's avatar
Christian Würdig committed
703
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; compare for switch");
Christian Würdig's avatar
Christian Würdig committed
704
705

			IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
706
707
		}

Christian Würdig's avatar
Christian Würdig committed
708
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, "ja %s", get_cfop_target(tbl.defProj, buf));
Christian Würdig's avatar
Christian Würdig committed
709
		snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; default jump if out of range ");
Christian Würdig's avatar
Christian Würdig committed
710
		IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
711
712
713
714

		if (tbl.num_branches > 1) {
			/* create table */

Christian Würdig's avatar
Christian Würdig committed
715
			lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "jmp [%1S*4+%s]", irn, tbl.label);
Christian Würdig's avatar
Christian Würdig committed
716
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; get jump table entry as target");
Christian Würdig's avatar
Christian Würdig committed
717
			IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
718

Christian Würdig's avatar
Christian Würdig committed
719
			fprintf(F, "\t.section\t.rodata\n");
Christian Würdig's avatar
Christian Würdig committed
720
721
722
			fprintf(F, "\t.align 4\n");

			fprintf(F, "%s:\n", tbl.label);
Christian Würdig's avatar
Christian Würdig committed
723
724
725
726

			snprintf(cmd_buf, SNPRINTF_BUF_LEN, ".long %s", get_cfop_target(tbl.branches[0].target, buf));
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* case %d */\n",  tbl.branches[0].value);
			IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
727
728
729
730

			last_value = tbl.branches[0].value;
			for (i = 1; i < tbl.num_branches; ++i) {
				while (++last_value < tbl.branches[i].value) {
Christian Würdig's avatar
Christian Würdig committed
731
					snprintf(cmd_buf, SNPRINTF_BUF_LEN, ".long %s", get_cfop_target(tbl.defProj, buf));
Christian Würdig's avatar
Christian Würdig committed
732
					snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; default case");
Christian Würdig's avatar
Christian Würdig committed
733
					IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
734
				}
Christian Würdig's avatar
Christian Würdig committed
735
				snprintf(cmd_buf, SNPRINTF_BUF_LEN, ".long %s", get_cfop_target(tbl.branches[i].target, buf), last_value);
Christian Würdig's avatar
Christian Würdig committed
736
				snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; case %d", last_value);
Christian Würdig's avatar
Christian Würdig committed
737
				IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
738
739
			}

Christian Würdig's avatar
Christian Würdig committed
740
			fprintf(F, "\t.text");
Christian Würdig's avatar
Christian Würdig committed
741
742
743
		}
		else {
			/* one jump is enough */
Christian Würdig's avatar
Christian Würdig committed
744
			snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(tbl.branches[0].target, buf));
Christian Würdig's avatar
Christian Würdig committed
745
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; only one case given");
Christian Würdig's avatar
Christian Würdig committed
746
			IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
747
748
749
750
		}
	}
	else { // no jump table
		for (i = 0; i < tbl.num_branches; ++i) {
Christian Würdig's avatar
Christian Würdig committed
751
			lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "cmpl %d, %1S", tbl.branches[i].value, irn);
Christian Würdig's avatar
Christian Würdig committed
752
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; case %d", i);
Christian Würdig's avatar
Christian Würdig committed
753
			IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
754
755
756
			fprintf(F, "\tje %s\n", get_cfop_target(tbl.branches[i].target, buf));
		}

Christian Würdig's avatar
Christian Würdig committed
757
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(tbl.defProj, buf));
Christian Würdig's avatar
Christian Würdig committed
758
		snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; default case");
Christian Würdig's avatar
Christian Würdig committed
759
		IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
760
761
	}

Christian Würdig's avatar
Christian Würdig committed
762
763
	if (tbl.label)
		free(tbl.label);
Christian Würdig's avatar
Christian Würdig committed
764
765
766
767
768
769
770
	if (tbl.branches)
		free(tbl.branches);
}

/**
 * Emits code for a unconditional jump.
 */
771
void emit_Jmp(const ir_node *irn, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
772
	FILE *F = env->out;
Christian Würdig's avatar
Christian Würdig committed
773
	char buf[SNPRINTF_BUF_LEN], cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
Christian Würdig's avatar
Christian Würdig committed
774

Christian Würdig's avatar
Christian Würdig committed
775
	snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(irn, buf), get_irn_link(irn));
Christian Würdig's avatar
Christian Würdig committed
776
	lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F(%+F)", irn, get_irn_link(irn));
Christian Würdig's avatar
Christian Würdig committed
777
	IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
778
779
}

Christian Würdig's avatar
Christian Würdig committed
780
781
782
783
784
785
786
787
788
789
790
791
792


/****************************
 *                  _
 *                 (_)
 *  _ __  _ __ ___  _  ___
 * | '_ \| '__/ _ \| |/ __|
 * | |_) | | | (_) | |\__ \
 * | .__/|_|  \___/| ||___/
 * | |            _/ |
 * |_|           |__/
 ****************************/

Christian Würdig's avatar
Christian Würdig committed
793
794
795
/**
 * Emits code for a proj -> node
 */
796
void emit_Proj(const ir_node *irn, ia32_emit_env_t *env) {
Christian Würdig's avatar
Christian Würdig committed
797
798
	ir_node *pred = get_Proj_pred(irn);

Christian Würdig's avatar
Christian Würdig committed
799
	if (get_irn_op(pred) == op_Start) {
Christian Würdig's avatar
Christian Würdig committed
800
801
802
803
804
805
806
807
808
809
		switch(get_Proj_proj(irn)) {
			case pn_Start_X_initial_exec:
				emit_Jmp(irn, env);
				break;
			default:
				break;
		}
	}
}

810
811
812
813
814
815
816
817
818
819
820
/**********************************
 *   _____                  ____
 *  / ____|                |  _ \
 * | |     ___  _ __  _   _| |_) |
 * | |    / _ \| '_ \| | | |  _ <
 * | |___| (_) | |_) | |_| | |_) |
 *  \_____\___/| .__/ \__, |____/
 *             | |     __/ |
 *             |_|    |___/
 **********************************/

821
822
823
/**
 * Emit movsb/w instructions to make mov count divideable by 4
 */
824
static void emit_CopyB_prolog(FILE *F, int rem, int size) {
Christian Würdig's avatar
Christian Würdig committed
825
826
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];

827
	fprintf(F, "\t/* memcopy %d bytes*/\n", size);
Christian Würdig's avatar
Christian Würdig committed
828
829
830
831

	snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cld");
	snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* copy direction forward*/");
	IA32_DO_EMIT;
832
833
834

	switch(rem) {
		case 1:
Christian Würdig's avatar
Christian Würdig committed
835
			snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsb");
Christian Würdig's avatar
Christian Würdig committed
836
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 1");
837
838
			break;
		case 2:
Christian Würdig's avatar
Christian Würdig committed
839
			snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsw");
Christian Würdig's avatar
Christian Würdig committed
840
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 2");
841
842
			break;
		case 3:
Christian Würdig's avatar
Christian Würdig committed
843
			snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsb");
Christian Würdig's avatar
Christian Würdig committed
844
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 3");
Christian Würdig's avatar
Christian Würdig committed
845
846
			IA32_DO_EMIT;
			snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsw");
Christian Würdig's avatar
Christian Würdig committed
847
			snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 3");
848
849
			break;
	}
Christian Würdig's avatar
Christian Würdig committed
850
851

	IA32_DO_EMIT;
852
853
}

854
855
856
/**
 * Emit rep movsd instruction for memcopy.
 */
857
void emit_ia32_CopyB(const ir_node *irn, ia32_emit_env_t *emit_env) {
858
859
860
861
	FILE   *F    = emit_env->out;
	tarval *tv   = get_ia32_Immop_tarval(irn);
	int     rem  = get_tarval_long(tv);
	int     size = get_tarval_long(get_ia32_Immop_tarval(get_irn_n(irn, 2)));
Christian Würdig's avatar
Christian Würdig committed
862
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
863
864
865

	emit_CopyB_prolog(F, rem, size);

Christian Würdig's avatar
Christian Würdig committed
866
	snprintf(cmd_buf, SNPRINTF_BUF_LEN, "rep movsd");
Christian Würdig's avatar
Christian Würdig committed
867
	snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy");
Christian Würdig's avatar
Christian Würdig committed
868
	IA32_DO_EMIT;
869
870
}

871
872
873
/**
 * Emits unrolled memcopy.
 */
874
void emit_ia32_CopyB_i(const ir_node *irn, ia32_emit_env_t *emit_env) {
875
876
877
	tarval *tv   = get_ia32_Immop_tarval(irn);
	int     size = get_tarval_long(tv);
	FILE   *F    = emit_env->out;
Christian Würdig's avatar
Christian Würdig committed
878
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
879
880
881
882
883

	emit_CopyB_prolog(F, size & 0x3, size);

	size >>= 2;
	while (size--) {
Christian Würdig's avatar
Christian Würdig committed
884
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsd");
Christian Würdig's avatar
Christian Würdig committed
885
		snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy unrolled");
Christian Würdig's avatar
Christian Würdig committed
886
		IA32_DO_EMIT;
887
888
889
	}
}

Christian Würdig's avatar
Christian Würdig committed
890
891


892
893
894
895
896
897
898
899
900
901
902
903
904
/***************************
 *   _____
 *  / ____|
 * | |     ___  _ ____   __
 * | |    / _ \| '_ \ \ / /
 * | |___| (_) | | | \ V /
 *  \_____\___/|_| |_|\_/
 *
 ***************************/

/**
 * Emit code for conversions (I, FP), (FP, I) and (FP, FP).
 */
905
static void emit_ia32_Conv(const ir_node *irn, ia32_emit_env_t *emit_env) {
906
907
908
909
	FILE               *F    = emit_env->out;
	const lc_arg_env_t *env  = ia32_get_arg_env();
	char               *from, *to, buf[64];
	ir_mode *src_mode, *tgt_mode;
Christian Würdig's avatar
Christian Würdig committed
910
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
911
912
913
914
915
916
917
918
919
920
921
922

	src_mode = is_ia32_AddrModeS(irn) ? get_ia32_ls_mode(irn) : get_irn_mode(get_irn_n(irn, 2));
	tgt_mode = get_ia32_res_mode(irn);

	from = mode_is_float(src_mode) ? (get_mode_size_bits(src_mode) == 32 ? "ss" : "sd") : "si";
	to   = mode_is_float(tgt_mode) ? (get_mode_size_bits(tgt_mode) == 32 ? "ss" : "sd") : "si";

	switch(get_ia32_op_type(irn)) {
		case ia32_Normal:
			lc_esnprintf(env, buf, sizeof(buf), "%1D, %3S", irn, irn);
			break;
		case ia32_AddrModeS:
923
			lc_esnprintf(env, buf, sizeof(buf), "%1D, %s", irn, ia32_emit_am(irn, emit_env));
924
925
926
927
928
			break;
		default:
			assert(0 && "unsupported op type for Conv");
	}

Christian Würdig's avatar
Christian Würdig committed
929
	snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cvt%s2%s %s", from, to, buf);
Christian Würdig's avatar
Christian Würdig committed
930
	lc_esnprintf(env, cmnt_buf, SNPRINTF_BUF_LEN, "; %+F(%+F, %+F)", irn, src_mode, tgt_mode);
Christian Würdig's avatar
Christian Würdig committed
931
	IA32_DO_EMIT;
932
933
}

934
void emit_ia32_Conv_I2FP(const ir_node *irn, ia32_emit_env_t *emit_env) {
935
936
937
	emit_ia32_Conv(irn, emit_env);
}

938
void emit_ia32_Conv_FP2I(const ir_node *irn, ia32_emit_env_t *emit_env) {
939
940
941
	emit_ia32_Conv(irn, emit_env);
}

942
void emit_ia32_Conv_FP2FP(const ir_node *irn, ia32_emit_env_t *emit_env) {
943
944
945
946
947
	emit_ia32_Conv(irn, emit_env);
}



Christian Würdig's avatar
Christian Würdig committed
948
949
950
951
952
953
954
/*******************************************
 *  _                          _
 * | |                        | |
 * | |__   ___ _ __   ___   __| | ___  ___
 * | '_ \ / _ \ '_ \ / _ \ / _` |/ _ \/ __|
 * | |_) |  __/ | | | (_) | (_| |  __/\__ \
 * |_.__/ \___|_| |_|\___/ \__,_|\___||___/
Christian Würdig's avatar
Christian Würdig committed
955
 *
Christian Würdig's avatar
Christian Würdig committed
956
957
 *******************************************/

958
959
960
/**
 * Emits a backend call
 */
961
void emit_be_Call(const ir_node *irn, ia32_emit_env_t *emit_env) {
Christian Würdig's avatar
Christian Würdig committed
962
	FILE *F = emit_env->out;
Christian Würdig's avatar
Christian Würdig committed
963
	entity *ent = be_Call_get_entity(irn);
Christian Würdig's avatar
Christian Würdig committed
964
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
Christian Würdig's avatar
Christian Würdig committed
965
966

	if (ent) {
Christian Würdig's avatar
Christian Würdig committed
967
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, "call %s", get_entity_name(ent));
Christian Würdig's avatar
Christian Würdig committed
968
969
	}
	else {
Christian Würdig's avatar
Christian Würdig committed
970
		lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "%1D", get_irn_n(irn, be_pos_Call_ptr));
Christian Würdig's avatar
Christian Würdig committed
971
	}
Christian Würdig's avatar
Christian Würdig committed
972

Christian Würdig's avatar
Christian Würdig committed
973
	lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F (be_Call)", irn);
Christian Würdig's avatar
Christian Würdig committed
974
975

	IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
976
977
}

978
979
980
/**
 * Emits code to increase stack pointer.
 */
981
void emit_be_IncSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
Christian Würdig's avatar
Christian Würdig committed
982
983
984
	FILE          *F    = emit_env->out;
	unsigned       offs = be_get_IncSP_offset(irn);
	be_stack_dir_t dir  = be_get_IncSP_direction(irn);
Christian Würdig's avatar
Christian Würdig committed
985
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
Christian Würdig's avatar
Christian Würdig committed
986
987

	if (offs) {
Christian Würdig's avatar
Christian Würdig committed
988
989
		lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %1S,%s%u", irn,
			(dir == be_stack_dir_along) ? " -" : " ", offs);
Christian Würdig's avatar
Christian Würdig committed
990
		lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F (IncSP)", irn);
Christian Würdig's avatar
Christian Würdig committed
991
992
	}
	else {
Christian Würdig's avatar
Christian Würdig committed
993
		snprintf(cmd_buf, SNPRINTF_BUF_LEN, " ");
Christian Würdig's avatar
Christian Würdig committed
994
		lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; omitted %+F (IncSP) with 0", irn);
Christian Würdig's avatar
Christian Würdig committed
995
	}
Christian Würdig's avatar
Christian Würdig committed
996
997

	IA32_DO_EMIT;
Christian Würdig's avatar
Christian Würdig committed
998
999
}

1000
1001
1002
/**
 * Emits code to set stack pointer.
 */
1003
void emit_be_SetSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
1004
	FILE *F = emit_env->out;
Christian Würdig's avatar
Christian Würdig committed
1005
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
1006

Christian Würdig's avatar
Christian Würdig committed
1007
	lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %3S", irn, irn);
Christian Würdig's avatar
Christian Würdig committed
1008
	lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F (restore SP)", irn);
Christian Würdig's avatar
Christian Würdig committed
1009
	IA32_DO_EMIT;
1010
1011
}

1012
1013
1014
/**
 * Emits code for Copy.
 */
1015
void emit_be_Copy(const ir_node *irn, ia32_emit_env_t *emit_env) {
1016
	FILE *F = emit_env->out;
Christian Würdig's avatar
Christian Würdig committed
1017
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
1018

Christian Würdig's avatar
Christian Würdig committed
1019
	lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %1S", irn, irn);
Christian Würdig's avatar
Christian Würdig committed
1020
	lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F", irn);
Christian Würdig's avatar
Christian Würdig committed
1021
	IA32_DO_EMIT;
1022
1023
}

1024
1025
1026
/**
 * Emits code for exchange.
 */
1027
void emit_be_Perm(const ir_node *irn, ia32_emit_env_t *emit_env) {
1028
	FILE *F = emit_env->out;
Christian Würdig's avatar
Christian Würdig committed
1029
	char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
1030

Christian Würdig's avatar
Christian Würdig committed
1031
	lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "xchg %1S, %2S", irn, irn);
Christian Würdig's avatar
Christian Würdig committed
1032
	lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F(%1A, %2A)", irn, irn, irn);
Christian Würdig's avatar
Christian Würdig committed
1033
	IA32_DO_EMIT;
1034
}
Christian Würdig's avatar
Christian Würdig committed
1035

Christian Würdig's avatar
Christian Würdig committed
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
/***********************************************************************************
 *                  _          __                                             _
 *                 (_)        / _|                                           | |
 *  _ __ ___   __ _ _ _ __   | |_ _ __ __ _ _ __ ___   _____      _____  _ __| | __
 * | '_ ` _ \ / _` | | '_ \  |  _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
 * | | | | | | (_| | | | | | | | | | | (_| | | | | | |  __/\ V  V / (_) | |  |   <
 * |_| |_| |_|\__,_|_|_| |_| |_| |_|  \__,_|_| |_| |_|\___| \_/\_/ \___/|_|  |_|\_\
 *
 ***********************************************************************************/

Christian Würdig's avatar
Christian Würdig committed
1046
/**
1047
1048
 * Enters the emitter functions for handled nodes into the generic
 * pointer of an opcode.
Christian Würdig's avatar
Christian Würdig committed
1049
 */
Christian Würdig's avatar
Christian Würdig committed
1050
static void ia32_register_emitters(void) {
Christian Würdig's avatar
Christian Würdig committed
1051

1052
1053
#define IA32_EMIT(a) op_ia32_##a->ops.generic = (op_func)emit_ia32_##a
#define EMIT(a)      op_##a->ops.generic = (op_func)emit_##a
Christian Würdig's avatar
Christian Würdig committed
1054
#define BE_EMIT(a)   op_be_##a->ops.generic = (op_func)emit_be_##a
Christian Würdig's avatar
Christian Würdig committed
1055

1056
1057
1058
	/* first clear the generic function pointer for all ops */
	clear_irp_opcodes_generic_func();

Christian Würdig's avatar
Christian Würdig committed
1059
1060
	/* register all emitter functions defined in spec */
	ia32_register_spec_emitters();
1061

Christian Würdig's avatar
Christian Würdig committed
1062
	/* other ia32 emitter functions */
1063
1064
	IA32_EMIT(CondJmp);
	IA32_EMIT(SwitchJmp);
Christian Würdig's avatar
Christian Würdig committed
1065
1066
	IA32_EMIT(CopyB);
	IA32_EMIT(CopyB_i);
1067
1068
1069
	IA32_EMIT(Conv_I2FP);
	IA32_EMIT(Conv_FP2I);
	IA32_EMIT(Conv_FP2FP);
Christian Würdig's avatar
Christian Würdig committed
1070
1071
1072
1073

	/* benode emitter */
	BE_EMIT(Call);
	BE_EMIT(IncSP);
1074
1075
1076
	BE_EMIT(SetSP);
	BE_EMIT(Copy);
	BE_EMIT(Perm);
1077

Christian Würdig's avatar
Christian Würdig committed
1078
	/* firm emitter */
1079
1080
	EMIT(Jmp);
	EMIT(Proj);
1081
1082

#undef IA32_EMIT
Christian Würdig's avatar
Christian Würdig committed
1083
#undef BE_EMIT
1084
1085
1086
1087
1088
1089
#undef EMIT
}

/**
 * Emits code for a node.
 */
Christian Würdig's avatar
Christian Würdig committed
1090
static void ia32_emit_node(const ir_node *irn, void *env) {
1091
	ia32_emit_env_t        *emit_env = env;
Christian Würdig's avatar
Christian Würdig committed
1092
1093
1094
	firm_dbg_module_t *mod      = emit_env->mod;
	FILE              *F        = emit_env->out;
	ir_op             *op       = get_irn_op(irn);
1095
1096

	DBG((mod, LEVEL_1, "emitting code for %+F\n", irn));
Christian Würdig's avatar
Christian Würdig committed
1097

1098
	if (op->ops.generic) {
Christian Würdig's avatar
Christian Würdig committed
1099
		void (*emit)(const ir_node *, void *) = (void (*)(const ir_node *, void *))op->ops.generic;
1100
1101
		(*emit)(irn, env);
	}
Christian Würdig's avatar
Christian Würdig committed
1102
	else {
Christian Würdig's avatar
Christian Würdig committed
1103
		ir_fprintf(F, "\t%35s ; %+F \n", " ", irn);
Christian Würdig's avatar
Christian Würdig committed
1104
	}
Christian Würdig's avatar
Christian Würdig committed
1105
1106
1107
1108
1109
1110
}

/**
 * Walks over the nodes in a block connected by scheduling edges
 * and emits code for each node.
 */
1111
static void ia32_gen_block(ir_node *block, void *env) {
Christian Würdig's avatar
Christian Würdig committed
1112
	const ir_node *irn;
Christian Würdig's avatar
Christian Würdig committed
1113

Christian Würdig's avatar
Christian Würdig committed
1114
1115
1116
	if (! is_Block(block))
		return;

1117
	fprintf(((ia32_emit_env_t *)env)->out, "BLOCK_%ld:\n", get_irn_node_nr(block));
Christian Würdig's avatar
Christian Würdig committed
1118
1119
1120
1121
1122
1123
1124
1125
1126
	sched_foreach(block, irn) {
		ia32_emit_node(irn, env);
	}
}


/**
 * Emits code for function start.
 */
Christian Würdig's avatar
Christian Würdig committed
1127
static void ia32_emit_func_prolog(FILE *F, ir_graph *irg) {
Christian Würdig's avatar
Christian Würdig committed
1128
1129
	entity     *irg_ent  = get_irg_entity(irg);
	const char *irg_name = get_entity_name(irg_ent);
Christian Würdig's avatar
Christian Würdig committed
1130

Christian Würdig's avatar
Christian Würdig committed
1131
1132
1133
1134
1135
//	fprintf(F, "\t.text\n");
	if (get_entity_visibility(irg_ent) == visibility_external_visible) {
		fprintf(F, "global %s\n", irg_name);
	}
//	fprintf(F, "\t.type\t%s, @function\n", irg_name);
Christian Würdig's avatar
Christian Würdig committed
1136
1137
1138
1139
1140
1141
	fprintf(F, "%s:\n", irg_name);
}

/**
 * Emits code for function end
 */
Christian Würdig's avatar
Christian Würdig committed
1142
static void ia32_emit_func_epilog(FILE *F, ir_graph *irg) {
Christian Würdig's avatar
Christian Würdig committed
1143
1144
1145
	const char *irg_name = get_entity_name(get_irg_entity(irg));

	fprintf(F, "\tret\n");