21 #include "../besched.h"
23 #include "arm_emitter.h"
24 #include "gen_arm_emitter.h"
25 #include "arm_nodes_attr.h"
26 #include "arm_new_nodes.h"
27 #include "arm_map_regs.h"
28 #include "gen_arm_regalloc_if.h"
30 #include "../benode_t.h"
32 #define SNPRINTF_BUF_LEN 128
34 static const arch_env_t *arch_env = NULL;
37 * Switch to a new section
39 void arm_switch_section(FILE *f, sections sec) {
40 static sections curr_sec = NO_SECTION;
52 fprintf(f, "\t.text\n");
56 fprintf(f, "\t.data\n");
61 /*************************************************************
63 * (_) | | / _| | | | |
64 * _ __ _ __ _ _ __ | |_| |_ | |__ ___| |_ __ ___ _ __
65 * | '_ \| '__| | '_ \| __| _| | '_ \ / _ \ | '_ \ / _ \ '__|
66 * | |_) | | | | | | | |_| | | | | | __/ | |_) | __/ |
67 * | .__/|_| |_|_| |_|\__|_| |_| |_|\___|_| .__/ \___|_|
70 *************************************************************/
73 * Returns non-zero if a mode has a Immediate attribute.
75 int is_immediate_node(ir_node *irn) {
76 arm_attr_t *attr = get_arm_attr(irn);
77 return ARM_GET_SHF_MOD(attr) == ARM_SHF_IMM;
81 * Return a const or SymConst as string.
83 static const char *node_const_to_str(ir_node *n, char *buf, int buflen) {
84 if (is_immediate_node(n)) {
85 snprintf(buf, buflen, "#0x%X", arm_decode_imm_w_shift(get_arm_value(n)));
88 else if (is_arm_SymConst(n))
89 return get_arm_symconst_label(n);
91 assert( 0 && "das ist gar keine Konstante");
96 * Returns node's offset as string.
98 static const char *node_offset_to_str(ir_node *n, char *buf, int buflen) {
100 ir_op *irn_op = get_irn_op(n);
102 if (irn_op == op_be_StackParam) {
103 entity *ent = be_get_frame_entity(n);
104 offset = get_entity_offset_bytes(ent);
105 } else if (irn_op == op_be_Reload || irn_op == op_be_Spill) {
106 entity * ent = be_get_spill_entity(n);
107 offset = get_entity_offset_bytes(ent);
108 } else if (irn_op == op_be_IncSP) {
109 int offs = be_get_IncSP_offset(n);
110 be_stack_dir_t dir = be_get_IncSP_direction(n);
111 offset = (dir == be_stack_dir_expand) ? -offs : offs;
113 return "node_offset_to_str will fuer diesen Knotentyp noch implementiert werden";
115 snprintf(buf, buflen, "%d", offset);
119 /* We always pass the ir_node which is a pointer. */
120 static int arm_get_arg_type(const lc_arg_occ_t *occ) {
121 return lc_arg_type_ptr;
126 * Returns the register at in position pos.
128 static const arch_register_t *get_in_reg(const ir_node *irn, int pos) {
130 const arch_register_t *reg = NULL;
132 assert(get_irn_arity(irn) > pos && "Invalid IN position");
134 /* The out register of the operator at position pos is the
135 in register we need. */
136 op = get_irn_n(irn, pos);
138 reg = arch_get_irn_register(arch_env, op);
140 assert(reg && "no in register found");
145 * Returns the register at out position pos.
147 static const arch_register_t *get_out_reg(const ir_node *irn, int pos) {
149 const arch_register_t *reg = NULL;
151 assert(get_irn_n_edges(irn) > pos && "Invalid OUT position");
153 /* 1st case: irn is not of mode_T, so it has only */
154 /* one OUT register -> good */
155 /* 2nd case: irn is of mode_T -> collect all Projs and ask the */
156 /* Proj with the corresponding projnum for the register */
158 if (get_irn_mode(irn) != mode_T) {
159 reg = arch_get_irn_register(arch_env, irn);
161 else if (is_arm_irn(irn)) {
162 reg = get_arm_out_reg(irn, pos);
165 const ir_edge_t *edge;
167 foreach_out_edge(irn, edge) {
168 proj = get_edge_src_irn(edge);
169 assert(is_Proj(proj) && "non-Proj from mode_T node");
170 if (get_Proj_proj(proj) == pos) {
171 reg = arch_get_irn_register(arch_env, proj);
177 assert(reg && "no out register found");
182 * Returns the number of the in register at position pos.
184 int get_arm_reg_nr(ir_node *irn, int pos, int in_out) {
185 const arch_register_t *reg;
188 reg = get_in_reg(irn, pos);
191 reg = get_out_reg(irn, pos);
194 return arch_register_get_index(reg);
198 * Returns the name of the in register at position pos.
200 const char *get_arm_reg_name(ir_node *irn, int pos, int in_out) {
201 const arch_register_t *reg;
204 reg = get_in_reg(irn, pos);
207 reg = get_out_reg(irn, pos);
210 return arch_register_get_name(reg);
214 * Get the register name for a node.
216 static int arm_get_reg_name(lc_appendable_t *app,
217 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
220 ir_node *X = arg->v_ptr;
221 int nr = occ->width - 1;
224 return lc_appendable_snadd(app, "(null)", 6);
226 if (occ->conversion == 'S') {
227 buf = get_arm_reg_name(X, nr, 1);
230 buf = get_arm_reg_name(X, nr, 0);
233 lc_appendable_chadd(app, '%');
234 return lc_appendable_snadd(app, buf, strlen(buf));
238 * Returns the tarval or offset of an arm node as a string.
240 static int arm_const_to_str(lc_appendable_t *app,
241 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
243 char buffer[SNPRINTF_BUF_LEN];
245 ir_node *X = arg->v_ptr;
248 return lc_appendable_snadd(app, "(null)", 6);
250 if (occ->conversion == 'C') {
251 buf = node_const_to_str(X, buffer, sizeof(buffer));
254 buf = node_offset_to_str(X, buffer, sizeof(buffer));
257 return lc_appendable_snadd(app, buf, strlen(buf));
261 * Returns the tarval or offset of an arm node as a string.
263 static int arm_shift_str(lc_appendable_t *app,
264 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
266 char buffer[SNPRINTF_BUF_LEN];
267 ir_node *X = arg->v_ptr;
268 arm_shift_modifier mod;
271 return lc_appendable_snadd(app, "(null)", 6);
273 mod = get_arm_shift_modifier(X);
274 if (ARM_HAS_SHIFT(mod)) {
275 long v = get_tarval_long(get_arm_value(X));
277 snprintf(buffer, sizeof(buffer), " %s #%ld", arm_shf_mod_name(mod), v);
278 return lc_appendable_snadd(app, buffer, strlen(buffer));
284 * Determines the instruction suffix depending on the mode.
286 static int arm_get_mode_suffix(lc_appendable_t *app,
287 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
289 ir_node *X = arg->v_ptr;
292 return lc_appendable_snadd(app, "(null)", 6);
294 if (get_mode_size_bits(get_irn_mode(X)) == 32)
295 return lc_appendable_chadd(app, 's');
297 return lc_appendable_chadd(app, 'd');
301 * Return the arm printf arg environment.
302 * We use the firm environment with some additional handlers.
304 const lc_arg_env_t *arm_get_arg_env(void) {
305 static lc_arg_env_t *env = NULL;
307 static const lc_arg_handler_t arm_reg_handler = { arm_get_arg_type, arm_get_reg_name };
308 static const lc_arg_handler_t arm_const_handler = { arm_get_arg_type, arm_const_to_str };
309 static const lc_arg_handler_t arm_mode_handler = { arm_get_arg_type, arm_get_mode_suffix };
310 static const lc_arg_handler_t arm_shf_handler = { arm_get_arg_type, arm_shift_str };
313 /* extend the firm printer */
314 env = firm_get_arg_env();
317 lc_arg_register(env, "arm:sreg", 'S', &arm_reg_handler);
318 lc_arg_register(env, "arm:dreg", 'D', &arm_reg_handler);
319 lc_arg_register(env, "arm:cnst", 'C', &arm_const_handler);
320 lc_arg_register(env, "arm:offs", 'O', &arm_const_handler);
321 lc_arg_register(env, "arm:mode", 'M', &arm_mode_handler);
322 lc_arg_register(env, "arm:shf", 'X', &arm_shf_handler);
329 * Formated print of commands and comments.
331 static void arm_fprintf_format(FILE *F, char *cmd_buf, char *cmnt_buf, ir_node *irn) {
332 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F (%G) */\n", cmd_buf, cmnt_buf, irn, irn);
336 * Add a number to a prefix. This number will not be used a second time.
338 static char *get_unique_label(char *buf, size_t buflen, const char *prefix) {
339 static unsigned long id = 0;
340 snprintf(buf, buflen, "%s%lu", prefix, ++id);
346 * Returns the target label for a control flow node.
348 static char *get_cfop_target(const ir_node *irn, char *buf) {
349 ir_node *bl = get_irn_link(irn);
351 snprintf(buf, SNPRINTF_BUF_LEN, "BLOCK_%ld", get_irn_node_nr(bl));
355 /************************************************************************/
357 /************************************************************************/
359 static void emit_arm_SymConst(ir_node *irn, void *env) {
360 arm_emit_env_t *emit_env = env;
361 FILE *out = emit_env->out;
362 char buffer1[SNPRINTF_BUF_LEN];
363 char *skip_label = get_unique_label(buffer1, SNPRINTF_BUF_LEN, ".L");
364 char buffer2[SNPRINTF_BUF_LEN];
365 char *indi_label = get_unique_label(buffer2, SNPRINTF_BUF_LEN, ".L");
366 fprintf( out, "\tB %s\t\t\t\t\t/* start of indirect SymConst */\n", skip_label );
367 fprintf( out, "\t.align 2\n" );
368 fprintf( out, "%s:\n", indi_label );
369 lc_efprintf(arm_get_arg_env(), out, "\t.word\t%C\n", irn);
370 fprintf( out, "\t.align 2\n" );
371 fprintf( out, "%s:\n", skip_label );
372 lc_efprintf(arm_get_arg_env(), out, "\tLDR %1D, %s\t\t\t/* end of indirect SymConst */\n", irn, indi_label);
376 * Returns the next block in a block schedule.
378 static ir_node *sched_next_block(ir_node *block) {
379 return get_irn_link(block);
383 * Emit a conditional jump.
385 static void emit_arm_CondJmp(ir_node *irn, void *env) {
386 arm_emit_env_t *emit_env = env;
387 FILE *out = emit_env->out;
388 const ir_edge_t *edge;
389 ir_node *true_block = NULL;
390 ir_node *false_block = NULL;
391 ir_node *op1 = get_irn_n(irn, 0);
392 ir_mode *opmode = get_irn_mode(op1);
394 int proj_num = get_arm_proj_num(irn);
395 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
398 foreach_out_edge(irn, edge) {
399 ir_node *proj = get_edge_src_irn(edge);
400 long nr = get_Proj_proj(proj);
401 ir_node *block = get_irn_link(proj);
402 if ( nr == pn_Cond_true) {
404 } else if (nr == pn_Cond_false) {
407 assert(0 && "tertium non datur! (CondJmp)");
411 if (proj_num == pn_Cmp_False) {
412 /* always false: should not happen */
413 fprintf(out, "\tB BLOCK_%ld\t\t\t/* false case */\n", get_irn_node_nr(false_block));
414 } else if (proj_num == pn_Cmp_True) {
415 /* always true: should not happen */
416 fprintf(out, "\tB BLOCK_%ld\t\t\t/* true case */\n", get_irn_node_nr(true_block));
418 ir_node *block = get_nodes_block(irn);
420 if (mode_is_float(opmode)) {
421 suffix = "ICHWILLIMPLEMENTIERTWERDEN";
423 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "FCMP %1S, %2S", irn, irn);
424 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Compare(%1S, %2S) -> FCPSR */", irn, irn );
425 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
427 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "FMSTAT", irn, irn);
428 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* FCSPR -> CPSR */");
429 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
431 if (true_block == sched_next_block(block)) {
433 proj_num = get_negated_pnc(proj_num, opmode);
436 case pn_Cmp_Eq: suffix = "EQ"; break;
437 case pn_Cmp_Lt: suffix = "LT"; break;
438 case pn_Cmp_Le: suffix = "LE"; break;
439 case pn_Cmp_Gt: suffix = "GT"; break;
440 case pn_Cmp_Ge: suffix = "GE"; break;
441 case pn_Cmp_Lg: suffix = "NE"; break;
442 case pn_Cmp_Leg: suffix = "AL"; break;
443 default: assert(0 && "komische Dinge geschehen"); suffix = "AL";
446 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "CMP %1S, %2S", irn, irn);
447 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Compare(%1S, %2S) -> CPSR */", irn, irn );
448 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
451 if (true_block == sched_next_block(block)) {
452 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "B%s BLOCK_%d", suffix, get_irn_node_nr(true_block));
453 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* false case */");
454 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
456 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* fallthrough BLOCK_%d */", get_irn_node_nr(false_block));
457 arm_fprintf_format(out, "", cmnt_buf, irn);
460 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "B%s BLOCK_%d", suffix, get_irn_node_nr(true_block));
461 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* true case */");
462 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
464 if (false_block == sched_next_block(block)) {
465 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* fallthrough BLOCK_%d */", get_irn_node_nr(false_block));
466 arm_fprintf_format(out, "", cmnt_buf, irn);
469 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "B BLOCK_%d", get_irn_node_nr(false_block));
470 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* false case */");
471 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
477 static void emit_arm_CopyB(ir_node *irn, void *env) {
478 arm_emit_env_t *emit_env = env;
479 FILE *out = emit_env->out;
480 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
481 unsigned int size = get_tarval_long(get_arm_value(irn));
482 const lc_arg_env_t *arg_env = arm_get_arg_env();
484 lc_esnprintf(arg_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* MemCopy (%2S)->(%1S) [%d bytes], Use %3S, %4S, %5S and %%r12 */", irn, irn, size, irn, irn, irn);
486 assert ( size > 0 && "CopyB needs size > 0" );
494 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "LDR %%r12, [%2S, #0]!", irn);
495 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
496 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "STR %%r12, [%1S, #0]!", irn);
497 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
500 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "LDMIA %2S!, {%%r12, %3S}", irn, irn);
501 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
502 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "STMIA %1S!, {%%r12, %3S}", irn, irn);
503 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
506 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "LDMIA %2S!, {%%r12, %3S, %4S}", irn, irn, irn);
507 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
508 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "STMIA %1S!, {%%r12, %3S, %4S}", irn, irn, irn);
509 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
514 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "LDMIA %2S!, {%%r12, %3S, %4S, %5S}", irn, irn, irn, irn);
515 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
516 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "STMIA %1S!, {%%r12, %3S, %4S, %5S}", irn, irn, irn, irn);
517 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
522 static void emit_arm_SwitchJmp(ir_node *irn, void *env) {
523 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
524 const ir_edge_t *edge;
526 arm_emit_env_t *emit_env = env;
527 FILE *out = emit_env->out;
532 int default_block_num;
534 block_nr = get_irn_node_nr(irn);
535 n_projs = get_arm_n_projs(irn);
537 projs = xcalloc(n_projs , sizeof(ir_node*));
539 foreach_out_edge(irn, edge) {
540 proj = get_edge_src_irn(edge);
541 assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");
543 if (get_Proj_proj(proj) == get_arm_default_proj_num(irn))
544 default_block_num = get_irn_node_nr(get_irn_link(proj));
546 projs[get_Proj_proj(proj)] = proj;
549 // CMP %1S, n_projs - 1
554 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "CMP %1S, #%u", irn, n_projs - 1);
555 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
556 lc_efprintf(arm_get_arg_env(), out, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
558 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "BHI BLOCK_%d", default_block_num);
559 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
560 lc_efprintf(arm_get_arg_env(), out, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
563 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "LDR %%r12, TABLE_%d_START", block_nr);
564 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
565 lc_efprintf(arm_get_arg_env(), out, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
567 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ADD %%r12, %%r12, %1S, LSL #2", irn);
568 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
569 lc_efprintf(arm_get_arg_env(), out, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
571 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "LDR %%r15, [%%r12, #0]");
572 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
573 lc_efprintf(arm_get_arg_env(), out, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
575 // LDR %r12, .TABLE_X_START
576 // ADD %r12, %r12, [%1S, LSL #2]
579 fprintf(out, "TABLE_%d_START:\n\t.word\tTABLE_%d\n", block_nr, block_nr);
580 fprintf(out, "\t.align 2\n");
581 fprintf(out, "TABLE_%d:\n", block_nr);
584 for ( i=0; i<n_projs; i++) {
588 block = get_irn_link(proj);
590 block = get_irn_link(projs[get_arm_default_proj_num(irn)]);
592 fprintf(out, "\t.word\tBLOCK_%ld\n",get_irn_node_nr(block));
594 fprintf(out, "\t.align 2\n");
599 /************************************************************************/
601 /************************************************************************/
603 static void emit_be_Call(ir_node *irn, void *env) {
604 arm_emit_env_t *emit_env = env;
605 FILE *F = emit_env->out;
606 entity *ent = be_Call_get_entity(irn);
607 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
610 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "BL %s", get_entity_ld_name(ent));
612 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "%1D", get_irn_n(irn, be_pos_Call_ptr));
613 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* %+F (be_Call) */", irn);
614 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %G */\n", cmd_buf, cmnt_buf, irn);
617 /** Emit an IncSP node */
618 static void emit_be_IncSP(const ir_node *irn, arm_emit_env_t *emit_env) {
619 FILE *F = emit_env->out;
620 unsigned offs = be_get_IncSP_offset(irn);
622 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
623 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ADD %1D, %1S, #%O", irn, irn, irn );
624 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* IncSP(%O) */", irn);
625 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
627 char cmnt_buf[SNPRINTF_BUF_LEN];
628 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* omitted IncSP(%O) */", irn);
629 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", "", cmnt_buf, irn);
633 // void emit_be_AddSP(const ir_node *irn, arm_emit_env_t *emit_env) {
634 // FILE *F = emit_env->out;
635 // char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
636 // lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ADD %1D, %1S, %2S", irn, irn, irn );
637 // lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* AddSP(%2S) */", irn);
638 // lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
641 static void emit_be_Copy(const ir_node *irn, arm_emit_env_t *emit_env) {
642 FILE *F = emit_env->out;
643 ir_mode *mode = get_irn_mode(irn);
644 assert( (mode != mode_E) && "IEEE Extended FP not supported");
646 if (get_in_reg(irn, 0) == get_out_reg(irn, 0)) {
647 char cmnt_buf[SNPRINTF_BUF_LEN];
648 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* omitted Copy: %1S -> %1D */", irn, irn);
649 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", "", cmnt_buf, irn);
653 if (mode == mode_F) {
654 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
655 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "FCPYS %1D, %1S", irn, irn);
656 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Copy: %1S -> %1D */", irn, irn);
657 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
658 } else if (mode == mode_D) {
659 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
660 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "FCPYD %1D, %1S", irn, irn);
661 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Copy: %1S -> %1D */", irn, irn);
662 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
663 } else if (mode_is_numP(mode)) {
664 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
665 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "MOV %1D, %1S", irn, irn);
666 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Copy: %1S -> %1D */", irn, irn);
667 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
669 assert(0 && "move not supported for this mode");
671 // emit_arm_Copy(irn, emit_env);
674 static void emit_be_Spill(const ir_node *irn, arm_emit_env_t *emit_env) {
675 FILE *F = emit_env->out;
676 ir_mode *mode = get_irn_mode(irn);
677 assert( (mode != mode_E) && "IEEE Extended FP not supported");
678 if (mode_is_dataM(mode)) {
679 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
680 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "STR %2S, [%1S, #%O]", irn, irn, irn );
681 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Spill(%2S) -> (%1S) */", irn, irn);
682 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
684 assert(0 && "spill not supported for this mode");
688 static void emit_be_Reload(const ir_node* irn, arm_emit_env_t *emit_env) {
689 FILE *F = emit_env->out;
690 ir_mode *mode = get_irn_mode(irn);
691 assert( (mode != mode_E) && "IEEE Extended FP not supported");
692 if (mode_is_dataM(mode)) {
693 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
694 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "LDR %1D, [%1S, #%O]", irn, irn, irn );
695 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Reload(%1S) -> (%1D) */", irn, irn);
696 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
698 assert(0 && "reload not supported for this mode");
702 static void emit_be_Perm(const ir_node* irn, arm_emit_env_t *emit_env) {
703 FILE *F = emit_env->out;
704 ir_mode *mode = get_irn_mode(irn);
705 assert( (mode != mode_E) && "IEEE Extended FP not supported");
706 lc_efprintf(arm_get_arg_env(), F, "\tEOR %1S, %1S, %2S\t\t\t/* begin Perm(%1S, %2S) */\n", irn, irn, irn, irn, irn);
707 lc_efprintf(arm_get_arg_env(), F, "\tEOR %2S, %1S, %2S\n", irn, irn, irn);
708 lc_efprintf(arm_get_arg_env(), F, "\tEOR %1S, %1S, %2S\t\t\t/* end Perm(%1S, %2S) */\n", irn, irn, irn, irn, irn);
711 static void emit_be_StackParam(const ir_node *irn, arm_emit_env_t *emit_env) {
712 FILE *F = emit_env->out;
713 ir_mode *mode = get_irn_mode(irn);
714 char cmd_buf[256], cmnt_buf[SNPRINTF_BUF_LEN];
715 assert( (mode != mode_E) && "IEEE Extended FP not supported");
717 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "LDR %1D, [%1S, #%O]", irn, irn, irn );
718 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* StackParam: (%1S + %O) -> %1D */",irn , irn, irn, get_irn_n(irn, 0));
719 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
722 /************************************************************************/
724 /************************************************************************/
726 static void emit_Jmp(ir_node *irn, void *env) {
727 arm_emit_env_t *emit_env = env;
728 FILE *out = emit_env->out;
729 const ir_edge_t *edge = get_irn_out_edge_first(irn);
730 ir_node *target_block = get_edge_src_irn(edge);
731 fprintf(out, "\tB BLOCK_%ld\t\t\t/* unconditional Jump */\n", get_irn_node_nr(target_block));
734 static void emit_silence(ir_node *irn, void *env) {
740 /***********************************************************************************
743 * _ __ ___ __ _ _ _ __ | |_ _ __ __ _ _ __ ___ _____ _____ _ __| | __
744 * | '_ ` _ \ / _` | | '_ \ | _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
745 * | | | | | | (_| | | | | | | | | | | (_| | | | | | | __/\ V V / (_) | | | <
746 * |_| |_| |_|\__,_|_|_| |_| |_| |_| \__,_|_| |_| |_|\___| \_/\_/ \___/|_| |_|\_\
748 ***********************************************************************************/
751 * Enters the emitter functions for handled nodes into the generic
752 * pointer of an opcode.
754 static void arm_register_emitters(void) {
756 #define ARM_EMIT(a) op_arm_##a->ops.generic = (op_func)emit_arm_##a
757 #define EMIT(a) op_##a->ops.generic = (op_func)emit_##a
758 #define BE_EMIT(a) op_be_##a->ops.generic = (op_func)emit_be_##a
759 #define SILENCE(a) op_##a->ops.generic = (op_func)emit_silence
761 /* first clear the generic function pointer for all ops */
762 clear_irp_opcodes_generic_func();
764 /* register all emitter functions defined in spec */
765 arm_register_spec_emitters();
767 /* other emitter functions */
770 // ARM_EMIT(CopyB_i);
793 SILENCE(be_CopyKeep);
802 typedef void (node_emitter)(const ir_node *, void *);
805 * Emits code for a node.
807 static void arm_emit_node(const ir_node *irn, void *env) {
808 arm_emit_env_t *emit_env = env;
809 FILE *F = emit_env->out;
810 ir_op *op = get_irn_op(irn);
811 DEBUG_ONLY(firm_dbg_module_t *mod = emit_env->mod;)
813 DBG((mod, LEVEL_1, "emitting code for %+F\n", irn));
815 if (op->ops.generic) {
816 node_emitter *emit = (node_emitter *)op->ops.generic;
820 ir_fprintf(F, "\t%-35s /* %+F %G */\n", "", irn, irn);
825 * Walks over the nodes in a block connected by scheduling edges
826 * and emits code for each node.
828 void arm_gen_block(ir_node *block, void *env) {
831 fprintf(((arm_emit_env_t *)env)->out, "BLOCK_%ld:\n", get_irn_node_nr(block));
832 sched_foreach(block, irn) {
833 arm_emit_node(irn, env);
839 * Emits code for function start.
841 void arm_emit_start(FILE *F, ir_graph *irg) {
842 entity *ent = get_irg_entity(irg);
843 const char *irg_name = get_entity_ld_name(ent);
844 arm_switch_section(F, SECTION_TEXT);
845 fprintf(F, "\t.align 2\n");
847 if (get_entity_visibility(ent) == visibility_external_visible)
848 fprintf(F, "\t.global %s\n", irg_name);
849 fprintf(F, "%s:\n", irg_name);
853 * Emits code for function end
855 void arm_emit_end(FILE *F, ir_graph *irg) {
859 * Sets labels for control flow nodes (jump target)
860 * TODO: Jump optimization
862 void arm_gen_labels(ir_node *block, void *env) {
864 int n = get_Block_n_cfgpreds(block);
866 for (n--; n >= 0; n--) {
867 pred = get_Block_cfgpred(block, n);
868 set_irn_link(pred, block);
874 * Main driver. Emits the code for one routine.
876 void arm_gen_routine(FILE *F, ir_graph *irg, const arm_code_gen_t *cg) {
877 arm_emit_env_t emit_env;
882 emit_env.arch_env = cg->arch_env;
884 FIRM_DBG_REGISTER(emit_env.mod, "firm.be.arm.emit");
886 /* set the global arch_env (needed by print hooks) */
887 arch_env = cg->arch_env;
889 arm_register_emitters();
891 /* create the block schedule. For now, we don't need it earlier. */
892 blk_sched = sched_create_block_schedule(cg->irg);
894 arm_emit_start(F, irg);
895 irg_block_walk_graph(irg, arm_gen_labels, NULL, &emit_env);
897 n = ARR_LEN(blk_sched);
898 for (i = 0; i < n;) {
899 ir_node *block, *next_bl;
901 block = blk_sched[i];
903 next_bl = i < n ? blk_sched[i] : NULL;
905 /* set here the link. the emitter expects to find the next block here */
906 set_irn_link(block, next_bl);
907 arm_gen_block(block, &emit_env);
910 arm_emit_end(F, irg);