21 #include "../besched.h"
22 #include "../beblocksched.h"
24 #include "arm_emitter.h"
25 #include "gen_arm_emitter.h"
26 #include "arm_nodes_attr.h"
27 #include "arm_new_nodes.h"
28 #include "arm_map_regs.h"
29 #include "gen_arm_regalloc_if.h"
31 #include "../benode_t.h"
33 #define SNPRINTF_BUF_LEN 128
35 static const arch_env_t *arch_env = NULL;
38 * Switch to a new section
40 void arm_switch_section(FILE *f, sections sec) {
41 static sections curr_sec = NO_SECTION;
53 fprintf(f, "\t.text\n");
57 fprintf(f, "\t.data\n");
65 /*************************************************************
67 * (_) | | / _| | | | |
68 * _ __ _ __ _ _ __ | |_| |_ | |__ ___| |_ __ ___ _ __
69 * | '_ \| '__| | '_ \| __| _| | '_ \ / _ \ | '_ \ / _ \ '__|
70 * | |_) | | | | | | | |_| | | | | | __/ | |_) | __/ |
71 * | .__/|_| |_|_| |_|\__|_| |_| |_|\___|_| .__/ \___|_|
74 *************************************************************/
77 * Returns non-zero if a mode has a Immediate attribute.
79 int is_immediate_node(ir_node *irn) {
80 arm_attr_t *attr = get_arm_attr(irn);
81 return ARM_GET_SHF_MOD(attr) == ARM_SHF_IMM;
85 * Return a const or SymConst as string.
87 static const char *node_const_to_str(ir_node *n, char *buf, int buflen) {
88 if (is_immediate_node(n)) {
89 snprintf(buf, buflen, "#0x%X", arm_decode_imm_w_shift(get_arm_value(n)));
92 else if (is_arm_SymConst(n))
93 return get_arm_symconst_label(n);
95 assert( 0 && "das ist gar keine Konstante");
100 * Returns node's offset as string.
102 static const char *node_offset_to_str(ir_node *n, char *buf, int buflen) {
104 ir_op *irn_op = get_irn_op(n);
106 if (irn_op == op_be_StackParam) {
107 ir_entity *ent = be_get_frame_entity(n);
108 offset = get_entity_offset(ent);
109 } else if (irn_op == op_be_Reload || irn_op == op_be_Spill) {
110 ir_entity *ent = be_get_frame_entity(n);
111 offset = get_entity_offset(ent);
112 } else if (irn_op == op_be_IncSP) {
113 offset = - be_get_IncSP_offset(n);
115 return "node_offset_to_str will fuer diesen Knotentyp noch implementiert werden";
117 snprintf(buf, buflen, "%d", offset);
121 /* We always pass the ir_node which is a pointer. */
122 static int arm_get_arg_type(const lc_arg_occ_t *occ) {
123 return lc_arg_type_ptr;
128 * Returns the register at in position pos.
130 static const arch_register_t *get_in_reg(const ir_node *irn, int pos) {
132 const arch_register_t *reg = NULL;
134 assert(get_irn_arity(irn) > pos && "Invalid IN position");
136 /* The out register of the operator at position pos is the
137 in register we need. */
138 op = get_irn_n(irn, pos);
140 reg = arch_get_irn_register(arch_env, op);
142 assert(reg && "no in register found");
147 * Returns the register at out position pos.
149 static const arch_register_t *get_out_reg(const ir_node *irn, int pos) {
151 const arch_register_t *reg = NULL;
153 assert(get_irn_n_edges(irn) > pos && "Invalid OUT position");
155 /* 1st case: irn is not of mode_T, so it has only */
156 /* one OUT register -> good */
157 /* 2nd case: irn is of mode_T -> collect all Projs and ask the */
158 /* Proj with the corresponding projnum for the register */
160 if (get_irn_mode(irn) != mode_T) {
161 reg = arch_get_irn_register(arch_env, irn);
163 else if (is_arm_irn(irn)) {
164 reg = get_arm_out_reg(irn, pos);
167 const ir_edge_t *edge;
169 foreach_out_edge(irn, edge) {
170 proj = get_edge_src_irn(edge);
171 assert(is_Proj(proj) && "non-Proj from mode_T node");
172 if (get_Proj_proj(proj) == pos) {
173 reg = arch_get_irn_register(arch_env, proj);
179 assert(reg && "no out register found");
184 * Returns the number of the in register at position pos.
186 int get_arm_reg_nr(ir_node *irn, int pos, int in_out) {
187 const arch_register_t *reg;
190 reg = get_in_reg(irn, pos);
193 reg = get_out_reg(irn, pos);
196 return arch_register_get_index(reg);
200 * Returns the name of the in register at position pos.
202 const char *get_arm_reg_name(ir_node *irn, int pos, int in_out) {
203 const arch_register_t *reg;
206 reg = get_in_reg(irn, pos);
209 reg = get_out_reg(irn, pos);
212 return arch_register_get_name(reg);
216 * Get the register name for a node.
218 static int arm_get_reg_name(lc_appendable_t *app,
219 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
222 ir_node *X = arg->v_ptr;
223 int nr = occ->width - 1;
226 return lc_appendable_snadd(app, "(null)", 6);
228 if (occ->conversion == 'S') {
229 buf = get_arm_reg_name(X, nr, 1);
232 buf = get_arm_reg_name(X, nr, 0);
235 lc_appendable_chadd(app, '%');
236 return lc_appendable_snadd(app, buf, strlen(buf));
240 * Returns the tarval or offset of an arm node as a string.
242 static int arm_const_to_str(lc_appendable_t *app,
243 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
245 char buffer[SNPRINTF_BUF_LEN];
247 ir_node *X = arg->v_ptr;
250 return lc_appendable_snadd(app, "(null)", 6);
252 if (occ->conversion == 'C') {
253 buf = node_const_to_str(X, buffer, sizeof(buffer));
256 buf = node_offset_to_str(X, buffer, sizeof(buffer));
259 return lc_appendable_snadd(app, buf, strlen(buf));
263 * Returns the tarval or offset of an arm node as a string.
265 static int arm_shift_str(lc_appendable_t *app,
266 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
268 char buffer[SNPRINTF_BUF_LEN];
269 ir_node *irn = arg->v_ptr;
270 arm_shift_modifier mod;
273 return lc_appendable_snadd(app, "(null)", 6);
275 mod = get_arm_shift_modifier(irn);
276 if (ARM_HAS_SHIFT(mod)) {
277 long v = get_tarval_long(get_arm_value(irn));
279 snprintf(buffer, sizeof(buffer), ", %s #%ld", arm_shf_mod_name(mod), v);
280 return lc_appendable_snadd(app, buffer, strlen(buffer));
286 * Determines the instruction suffix depending on the mode.
288 static int arm_get_mode_suffix(lc_appendable_t *app,
289 const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
291 ir_node *irn = arg->v_ptr;
297 return lc_appendable_snadd(app, "(null)", 6);
299 attr = get_arm_attr(irn);
300 mode = attr->op_mode ? attr->op_mode : get_irn_mode(irn);
301 bits = get_mode_size_bits(mode);
304 return lc_appendable_chadd(app, 's');
306 return lc_appendable_chadd(app, 'd');
308 return lc_appendable_chadd(app, 'e');
312 * Return the arm printf arg environment.
313 * We use the firm environment with some additional handlers.
315 const lc_arg_env_t *arm_get_arg_env(void) {
316 static lc_arg_env_t *env = NULL;
318 static const lc_arg_handler_t arm_reg_handler = { arm_get_arg_type, arm_get_reg_name };
319 static const lc_arg_handler_t arm_const_handler = { arm_get_arg_type, arm_const_to_str };
320 static const lc_arg_handler_t arm_mode_handler = { arm_get_arg_type, arm_get_mode_suffix };
321 static const lc_arg_handler_t arm_shf_handler = { arm_get_arg_type, arm_shift_str };
324 /* extend the firm printer */
325 env = firm_get_arg_env();
328 lc_arg_register(env, "arm:sreg", 'S', &arm_reg_handler);
329 lc_arg_register(env, "arm:dreg", 'D', &arm_reg_handler);
330 lc_arg_register(env, "arm:cnst", 'C', &arm_const_handler);
331 lc_arg_register(env, "arm:offs", 'O', &arm_const_handler);
332 lc_arg_register(env, "arm:mode", 'M', &arm_mode_handler);
333 lc_arg_register(env, "arm:shf", 'X', &arm_shf_handler);
340 * Formated print of commands and comments.
342 static void arm_fprintf_format(FILE *F, const char *cmd_buf, const char *cmnt_buf, const ir_node *irn) {
343 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F (%G) */\n", cmd_buf, cmnt_buf, irn, irn);
347 * Returns a unique label. This number will not be used a second time.
349 static unsigned get_unique_label(void) {
350 static unsigned id = 0;
357 static void emit_arm_SymConst(ir_node *irn, void *env) {
358 arm_emit_env_t *emit_env = env;
359 FILE *F = emit_env->out;
360 SymConstEntry *entry = obstack_alloc(&emit_env->obst, sizeof(*entry));
361 const lc_arg_env_t *arg_env = arm_get_arg_env();
364 entry->label = get_unique_label();
365 entry->symconst = irn;
366 entry->next = emit_env->symbols;
367 emit_env->symbols = entry;
369 lc_esnprintf(arg_env, cmd_buf, 256, "ldr %1D, .L%u", irn, entry->label);
370 arm_fprintf_format(F, cmd_buf, "/* indirect SymConst */", irn);
374 * Returns the next block in a block schedule.
376 static ir_node *sched_next_block(ir_node *block) {
377 return get_irn_link(block);
381 * Emit a conditional jump.
383 static void emit_arm_CondJmp(ir_node *irn, void *env) {
384 arm_emit_env_t *emit_env = env;
385 FILE *out = emit_env->out;
386 const ir_edge_t *edge;
387 ir_node *true_block = NULL;
388 ir_node *false_block = NULL;
389 ir_node *op1 = get_irn_n(irn, 0);
390 ir_mode *opmode = get_irn_mode(op1);
392 int proj_num = get_arm_proj_num(irn);
393 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
396 foreach_out_edge(irn, edge) {
397 ir_node *proj = get_edge_src_irn(edge);
398 long nr = get_Proj_proj(proj);
399 ir_node *block = get_irn_link(proj);
400 if ( nr == pn_Cond_true) {
402 } else if (nr == pn_Cond_false) {
405 assert(0 && "tertium non datur! (CondJmp)");
409 if (proj_num == pn_Cmp_False) {
410 /* always false: should not happen */
411 fprintf(out, "\tb BLOCK_%ld\t\t\t/* false case */\n", get_irn_node_nr(false_block));
412 } else if (proj_num == pn_Cmp_True) {
413 /* always true: should not happen */
414 fprintf(out, "\tb BLOCK_%ld\t\t\t/* true case */\n", get_irn_node_nr(true_block));
416 ir_node *block = get_nodes_block(irn);
418 if (mode_is_float(opmode)) {
419 suffix = "ICHWILLIMPLEMENTIERTWERDEN";
421 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "fcmp %1S, %2S", irn, irn);
422 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Compare(%1S, %2S) -> FCPSR */", irn, irn );
423 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
425 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "fmstat", irn, irn);
426 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* FCSPR -> CPSR */");
427 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
429 if (true_block == sched_next_block(block)) {
431 proj_num = get_negated_pnc(proj_num, opmode);
434 case pn_Cmp_Eq: suffix = "eq"; break;
435 case pn_Cmp_Lt: suffix = "lt"; break;
436 case pn_Cmp_Le: suffix = "le"; break;
437 case pn_Cmp_Gt: suffix = "gt"; break;
438 case pn_Cmp_Ge: suffix = "ge"; break;
439 case pn_Cmp_Lg: suffix = "ne"; break;
440 case pn_Cmp_Leg: suffix = "al"; break;
441 default: assert(0 && "komische Dinge geschehen"); suffix = "al";
444 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "cmp %1S, %2S", irn, irn);
445 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Compare(%1S, %2S) -> CPSR */", irn, irn );
446 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
449 if (true_block == sched_next_block(block)) {
450 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "b%s BLOCK_%d", suffix, get_irn_node_nr(true_block));
451 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* false case */");
452 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
454 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* fallthrough BLOCK_%d */", get_irn_node_nr(false_block));
455 arm_fprintf_format(out, "", cmnt_buf, irn);
458 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "b%s BLOCK_%d", suffix, get_irn_node_nr(true_block));
459 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* true case */");
460 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
462 if (false_block == sched_next_block(block)) {
463 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* fallthrough BLOCK_%d */", get_irn_node_nr(false_block));
464 arm_fprintf_format(out, "", cmnt_buf, irn);
467 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "b BLOCK_%d", get_irn_node_nr(false_block));
468 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* false case */");
469 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
475 static void emit_arm_CopyB(ir_node *irn, void *env) {
476 arm_emit_env_t *emit_env = env;
477 FILE *out = emit_env->out;
478 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
479 unsigned int size = get_tarval_long(get_arm_value(irn));
480 const lc_arg_env_t *arg_env = arm_get_arg_env();
482 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);
484 assert ( size > 0 && "CopyB needs size > 0" );
492 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldr %%r12, [%2S, #0]!", irn);
493 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
494 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "str %%r12, [%1S, #0]!", irn);
495 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
498 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldmia %2S!, {%%r12, %3S}", irn, irn);
499 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
500 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "stmia %1S!, {%%r12, %3S}", irn, irn);
501 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
504 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldmia %2S!, {%%r12, %3S, %4S}", irn, irn, irn);
505 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
506 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "stmia %1S!, {%%r12, %3S, %4S}", irn, irn, irn);
507 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
512 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldmia %2S!, {%%r12, %3S, %4S, %5S}", irn, irn, irn, irn);
513 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
514 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "stmia %1S!, {%%r12, %3S, %4S, %5S}", irn, irn, irn, irn);
515 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
520 static void emit_arm_SwitchJmp(ir_node *irn, void *env) {
521 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
522 const ir_edge_t *edge;
524 arm_emit_env_t *emit_env = env;
525 FILE *out = emit_env->out;
530 int default_block_num = -1;
532 block_nr = get_irn_node_nr(irn);
533 n_projs = get_arm_n_projs(irn);
535 projs = xcalloc(n_projs , sizeof(ir_node*));
537 foreach_out_edge(irn, edge) {
538 proj = get_edge_src_irn(edge);
539 assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");
541 if (get_Proj_proj(proj) == get_arm_default_proj_num(irn))
542 default_block_num = get_irn_node_nr(get_irn_link(proj));
544 projs[get_Proj_proj(proj)] = proj;
546 assert(default_block_num >= 0);
548 // CMP %1S, n_projs - 1
553 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "cmp %1S, #%u", irn, n_projs - 1);
554 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
555 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
557 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "bhi BLOCK_%d", default_block_num);
558 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
559 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
562 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ldr %%r12, TABLE_%d_START", block_nr);
563 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
564 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
566 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %%r12, %%r12, %1S, LSL #2", irn);
567 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
568 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
570 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ldr %%r15, [%%r12, #0]");
571 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
572 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
574 // LDR %r12, .TABLE_X_START
575 // ADD %r12, %r12, [%1S, LSL #2]
578 fprintf(out, "TABLE_%d_START:\n\t.word\tTABLE_%d\n", block_nr, block_nr);
579 fprintf(out, "\t.align 2\n");
580 fprintf(out, "TABLE_%d:\n", block_nr);
583 for ( i=0; i<n_projs; i++) {
587 block = get_irn_link(proj);
589 block = get_irn_link(projs[get_arm_default_proj_num(irn)]);
591 fprintf(out, "\t.word\tBLOCK_%ld\n",get_irn_node_nr(block));
593 fprintf(out, "\t.align 2\n");
598 /************************************************************************/
600 /************************************************************************/
602 static void emit_be_Call(ir_node *irn, void *env) {
603 arm_emit_env_t *emit_env = env;
604 FILE *F = emit_env->out;
605 ir_entity *ent = be_Call_get_entity(irn);
606 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
609 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "bl %s", get_entity_ld_name(ent));
611 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "%1D", get_irn_n(irn, be_pos_Call_ptr));
612 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* %+F (be_Call) */", irn);
613 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
616 /** Emit an IncSP node */
617 static void emit_be_IncSP(const ir_node *irn, arm_emit_env_t *emit_env) {
618 FILE *F = emit_env->out;
619 int 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 arm_fprintf_format(F, 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 arm_fprintf_format(F, "", 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 const lc_arg_env_t *arm_env = arm_get_arg_env();
645 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
647 if (get_in_reg(irn, 0) == get_out_reg(irn, 0)) {
648 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* omitted Copy: %1S -> %1D */", irn, irn);
649 lc_efprintf(arm_env, F, "\t%-35s %-60s /* %+F */\n", "", cmnt_buf, irn);
653 if (mode_is_float(mode)) {
654 if (USE_FPA(emit_env->cg->isa)) {
655 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "mvf%M %1D, %1S", irn, irn, irn);
656 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Copy: %1S -> %1D */", irn, irn);
657 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
660 assert(0 && "move not supported for this mode");
662 } else if (mode_is_numP(mode)) {
663 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %1S", irn, irn);
664 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Copy: %1S -> %1D */", irn, irn);
665 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
667 assert(0 && "move not supported for this mode");
669 // emit_arm_Copy(irn, emit_env);
673 * Emit code for a Spill.
675 static void emit_be_Spill(const ir_node *irn, arm_emit_env_t *emit_env) {
676 FILE *F = emit_env->out;
677 ir_mode *mode = get_irn_mode(irn);
678 const lc_arg_env_t *arm_env = arm_get_arg_env();
679 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
681 if (mode_is_float(mode)) {
682 if (USE_FPA(emit_env->cg->isa)) {
683 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "stf %2S, [%1S, #%O]", irn, irn, irn );
684 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Spill(%2S) -> (%1S) */", irn, irn);
685 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
688 assert(0 && "move not supported for this mode");
690 } else if (mode_is_dataM(mode)) {
691 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "str %2S, [%1S, #%O]", irn, irn, irn );
692 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Spill(%2S) -> (%1S) */", irn, irn);
693 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
695 assert(0 && "spill not supported for this mode");
700 * Emit code for a Reload.
702 static void emit_be_Reload(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 const lc_arg_env_t *arm_env = arm_get_arg_env();
706 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
708 if (mode_is_float(mode)) {
709 if (USE_FPA(emit_env->cg->isa)) {
710 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldf %1D, [%1S, #%O]", irn, irn, irn );
711 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Reload(%1S) -> (%1D) */", irn, irn);
712 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
715 assert(0 && "move not supported for this mode");
717 } else if (mode_is_dataM(mode)) {
718 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldr %1D, [%1S, #%O]", irn, irn, irn );
719 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Reload(%1S) -> (%1D) */", irn, irn);
720 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
722 assert(0 && "reload not supported for this mode");
726 static void emit_be_Perm(const ir_node* irn, arm_emit_env_t *emit_env) {
727 FILE *F = emit_env->out;
728 const lc_arg_env_t *arm_env = arm_get_arg_env();
729 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
731 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "eor %1S, %1S, %2S", irn, irn, irn);
732 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* begin Perm(%1S, %2S) */", irn, irn);
733 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
735 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "eor %2S, %1S, %2S", irn, irn, irn);
736 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, " ");
737 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
739 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "eor %1S, %1S, %2S", irn, irn, irn);
740 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* end Perm(%1S, %2S) */", irn, irn);
741 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
744 static void emit_be_StackParam(const ir_node *irn, arm_emit_env_t *emit_env) {
745 FILE *F = emit_env->out;
746 ir_mode *mode = get_irn_mode(irn);
747 const lc_arg_env_t *arm_env = arm_get_arg_env();
748 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
750 if (mode_is_float(mode)) {
751 if (USE_FPA(emit_env->cg->isa)) {
752 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldf %1D, [%1S, #%O]", irn, irn, irn );
753 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* StackParam: (%1S + %O) -> %1D */",irn , irn, irn, get_irn_n(irn, 0));
754 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
757 assert(0 && "move not supported for this mode");
760 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldr %1D, [%1S, #%O]", irn, irn, irn );
761 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* StackParam: (%1S + %O) -> %1D */",irn , irn, irn, get_irn_n(irn, 0));
762 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
766 /************************************************************************/
768 /************************************************************************/
770 static void emit_Jmp(ir_node *irn, void *env) {
771 char cmd_buf[SNPRINTF_BUF_LEN];
772 arm_emit_env_t *emit_env = env;
773 FILE *F = emit_env->out;
774 const ir_edge_t *edge = get_irn_out_edge_first(irn);
775 const lc_arg_env_t *arm_env = arm_get_arg_env();
776 ir_node *target_block = get_edge_src_irn(edge);
778 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "b BLOCK_%d", get_irn_node_nr(target_block));
779 arm_fprintf_format(F, cmd_buf, "/* unconditional Jump */", irn);
782 static void emit_arm_fpaDbl2GP(const ir_node *n, arm_emit_env_t *env) {
785 const lc_arg_env_t *arg_env = arm_get_arg_env();
787 lc_esnprintf(arg_env, cmd_buf, 256, "stfd %1S, [sp, #-8]! ", n);
788 arm_fprintf_format(F, cmd_buf, "/* Push fp to stack */", n);
790 lc_esnprintf(arg_env, cmd_buf, 256, "ldmfd sp!, {%2D, %1D} ", n, n);
791 arm_fprintf_format(F, cmd_buf, "/* Pop destination */", n);
794 static void emit_silence(ir_node *irn, void *env) {
799 /***********************************************************************************
802 * _ __ ___ __ _ _ _ __ | |_ _ __ __ _ _ __ ___ _____ _____ _ __| | __
803 * | '_ ` _ \ / _` | | '_ \ | _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
804 * | | | | | | (_| | | | | | | | | | | (_| | | | | | | __/\ V V / (_) | | | <
805 * |_| |_| |_|\__,_|_|_| |_| |_| |_| \__,_|_| |_| |_|\___| \_/\_/ \___/|_| |_|\_\
807 ***********************************************************************************/
810 * Enters the emitter functions for handled nodes into the generic
811 * pointer of an opcode.
813 static void arm_register_emitters(void) {
815 #define ARM_EMIT(a) op_arm_##a->ops.generic = (op_func)emit_arm_##a
816 #define EMIT(a) op_##a->ops.generic = (op_func)emit_##a
817 #define BE_EMIT(a) op_be_##a->ops.generic = (op_func)emit_be_##a
818 #define SILENCE(a) op_##a->ops.generic = (op_func)emit_silence
820 /* first clear the generic function pointer for all ops */
821 clear_irp_opcodes_generic_func();
823 /* register all emitter functions defined in spec */
824 arm_register_spec_emitters();
826 /* other emitter functions */
829 // ARM_EMIT(CopyB_i);
853 SILENCE(be_CopyKeep);
862 typedef void (node_emitter)(const ir_node *, void *);
865 * Emits code for a node.
867 static void arm_emit_node(const ir_node *irn, void *env) {
868 arm_emit_env_t *emit_env = env;
869 FILE *F = emit_env->out;
870 ir_op *op = get_irn_op(irn);
871 DEBUG_ONLY(firm_dbg_module_t *mod = emit_env->mod;)
873 DBG((mod, LEVEL_1, "emitting code for %+F\n", irn));
875 if (op->ops.generic) {
876 node_emitter *emit = (node_emitter *)op->ops.generic;
880 ir_fprintf(F, "\t%-35s /* %+F %G */\n", "", irn, irn);
885 * Walks over the nodes in a block connected by scheduling edges
886 * and emits code for each node.
888 void arm_gen_block(ir_node *block, void *env) {
891 fprintf(((arm_emit_env_t *)env)->out, "BLOCK_%ld:\n", get_irn_node_nr(block));
892 sched_foreach(block, irn) {
893 arm_emit_node(irn, env);
899 * Emits code for function start.
901 void arm_emit_start(FILE *F, ir_graph *irg) {
902 ir_entity *ent = get_irg_entity(irg);
903 const char *irg_name = get_entity_ld_name(ent);
904 arm_switch_section(F, SECTION_TEXT);
905 fprintf(F, "\t.align 2\n");
907 if (get_entity_visibility(ent) == visibility_external_visible)
908 fprintf(F, "\t.global %s\n", irg_name);
909 fprintf(F, "%s:\n", irg_name);
913 * Emits code for function end
915 void arm_emit_end(FILE *F, ir_graph *irg) {
916 fprintf(F, "\t.ident \"firmcc\"\n");
920 * Sets labels for control flow nodes (jump target)
921 * TODO: Jump optimization
923 void arm_gen_labels(ir_node *block, void *env) {
925 int n = get_Block_n_cfgpreds(block);
927 for (n--; n >= 0; n--) {
928 pred = get_Block_cfgpred(block, n);
929 set_irn_link(pred, block);
935 * Main driver. Emits the code for one routine.
937 void arm_gen_routine(FILE *F, ir_graph *irg, const arm_code_gen_t *cg) {
938 SymConstEntry *entry;
939 arm_emit_env_t emit_env;
944 emit_env.arch_env = cg->arch_env;
946 emit_env.symbols = NULL;
947 obstack_init(&emit_env.obst);
948 FIRM_DBG_REGISTER(emit_env.mod, "firm.be.arm.emit");
950 /* set the global arch_env (needed by print hooks) */
951 arch_env = cg->arch_env;
953 arm_register_emitters();
955 /* create the block schedule. For now, we don't need it earlier. */
956 blk_sched = be_create_block_schedule(cg->irg, cg->birg->exec_freq);
958 arm_emit_start(F, irg);
959 irg_block_walk_graph(irg, arm_gen_labels, NULL, &emit_env);
961 n = ARR_LEN(blk_sched);
962 for (i = 0; i < n;) {
963 ir_node *block, *next_bl;
965 block = blk_sched[i];
967 next_bl = i < n ? blk_sched[i] : NULL;
969 /* set here the link. the emitter expects to find the next block here */
970 set_irn_link(block, next_bl);
971 arm_gen_block(block, &emit_env);
974 /* emit SymConst values */
975 if (emit_env.symbols)
976 fprintf(F, "\t.align 2\n");
978 for (entry = emit_env.symbols; entry; entry = entry->next) {
979 fprintf(F, ".L%u:\n", entry->label);
980 lc_efprintf(arm_get_arg_env(), F, "\t.word\t%C\n", entry->symconst);
983 obstack_free(&emit_env.obst, NULL);