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 *irn = arg->v_ptr;
268 arm_shift_modifier mod;
271 return lc_appendable_snadd(app, "(null)", 6);
273 mod = get_arm_shift_modifier(irn);
274 if (ARM_HAS_SHIFT(mod)) {
275 long v = get_tarval_long(get_arm_value(irn));
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 *irn = arg->v_ptr;
295 return lc_appendable_snadd(app, "(null)", 6);
297 attr = get_arm_attr(irn);
298 mode = attr->op_mode ? attr->op_mode : get_irn_mode(irn);
299 bits = get_mode_size_bits(mode);
302 return lc_appendable_chadd(app, 's');
304 return lc_appendable_chadd(app, 'd');
306 return lc_appendable_chadd(app, 'e');
310 * Return the arm printf arg environment.
311 * We use the firm environment with some additional handlers.
313 const lc_arg_env_t *arm_get_arg_env(void) {
314 static lc_arg_env_t *env = NULL;
316 static const lc_arg_handler_t arm_reg_handler = { arm_get_arg_type, arm_get_reg_name };
317 static const lc_arg_handler_t arm_const_handler = { arm_get_arg_type, arm_const_to_str };
318 static const lc_arg_handler_t arm_mode_handler = { arm_get_arg_type, arm_get_mode_suffix };
319 static const lc_arg_handler_t arm_shf_handler = { arm_get_arg_type, arm_shift_str };
322 /* extend the firm printer */
323 env = firm_get_arg_env();
326 lc_arg_register(env, "arm:sreg", 'S', &arm_reg_handler);
327 lc_arg_register(env, "arm:dreg", 'D', &arm_reg_handler);
328 lc_arg_register(env, "arm:cnst", 'C', &arm_const_handler);
329 lc_arg_register(env, "arm:offs", 'O', &arm_const_handler);
330 lc_arg_register(env, "arm:mode", 'M', &arm_mode_handler);
331 lc_arg_register(env, "arm:shf", 'X', &arm_shf_handler);
338 * Formated print of commands and comments.
340 static void arm_fprintf_format(FILE *F, const char *cmd_buf, const char *cmnt_buf, const ir_node *irn) {
341 lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F (%G) */\n", cmd_buf, cmnt_buf, irn, irn);
345 * Returns a unique label. This number will not be used a second time.
347 static unsigned get_unique_label(void) {
348 static unsigned id = 0;
354 * Returns the target label for a control flow node.
356 static char *get_cfop_target(const ir_node *irn, char *buf) {
357 ir_node *bl = get_irn_link(irn);
359 snprintf(buf, SNPRINTF_BUF_LEN, "BLOCK_%d", get_irn_node_nr(bl));
366 static void emit_arm_SymConst(ir_node *irn, void *env) {
367 arm_emit_env_t *emit_env = env;
368 FILE *F = emit_env->out;
369 SymConstEntry *entry = obstack_alloc(&emit_env->obst, sizeof(*entry));
370 const lc_arg_env_t *arg_env = arm_get_arg_env();
373 entry->label = get_unique_label();
374 entry->symconst = irn;
375 entry->next = emit_env->symbols;
376 emit_env->symbols = entry;
378 lc_esnprintf(arg_env, cmd_buf, 256, "ldr %1D, .L%u", irn, entry->label);
379 arm_fprintf_format(F, cmd_buf, "/* indirect SymConst */", irn);
383 * Returns the next block in a block schedule.
385 static ir_node *sched_next_block(ir_node *block) {
386 return get_irn_link(block);
390 * Emit a conditional jump.
392 static void emit_arm_CondJmp(ir_node *irn, void *env) {
393 arm_emit_env_t *emit_env = env;
394 FILE *out = emit_env->out;
395 const ir_edge_t *edge;
396 ir_node *true_block = NULL;
397 ir_node *false_block = NULL;
398 ir_node *op1 = get_irn_n(irn, 0);
399 ir_mode *opmode = get_irn_mode(op1);
401 int proj_num = get_arm_proj_num(irn);
402 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
405 foreach_out_edge(irn, edge) {
406 ir_node *proj = get_edge_src_irn(edge);
407 long nr = get_Proj_proj(proj);
408 ir_node *block = get_irn_link(proj);
409 if ( nr == pn_Cond_true) {
411 } else if (nr == pn_Cond_false) {
414 assert(0 && "tertium non datur! (CondJmp)");
418 if (proj_num == pn_Cmp_False) {
419 /* always false: should not happen */
420 fprintf(out, "\tb BLOCK_%d\t\t\t/* false case */\n", get_irn_node_nr(false_block));
421 } else if (proj_num == pn_Cmp_True) {
422 /* always true: should not happen */
423 fprintf(out, "\tb BLOCK_%d\t\t\t/* true case */\n", get_irn_node_nr(true_block));
425 ir_node *block = get_nodes_block(irn);
427 if (mode_is_float(opmode)) {
428 suffix = "ICHWILLIMPLEMENTIERTWERDEN";
430 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "fcmp %1S, %2S", irn, irn);
431 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Compare(%1S, %2S) -> FCPSR */", irn, irn );
432 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
434 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "fmstat", irn, irn);
435 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* FCSPR -> CPSR */");
436 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
438 if (true_block == sched_next_block(block)) {
440 proj_num = get_negated_pnc(proj_num, opmode);
443 case pn_Cmp_Eq: suffix = "eq"; break;
444 case pn_Cmp_Lt: suffix = "lt"; break;
445 case pn_Cmp_Le: suffix = "le"; break;
446 case pn_Cmp_Gt: suffix = "gt"; break;
447 case pn_Cmp_Ge: suffix = "ge"; break;
448 case pn_Cmp_Lg: suffix = "ne"; break;
449 case pn_Cmp_Leg: suffix = "al"; break;
450 default: assert(0 && "komische Dinge geschehen"); suffix = "al";
453 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "cmp %1S, %2S", irn, irn);
454 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* Compare(%1S, %2S) -> CPSR */", irn, irn );
455 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
458 if (true_block == sched_next_block(block)) {
459 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "b%s BLOCK_%d", suffix, get_irn_node_nr(true_block));
460 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* false case */");
461 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
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%s BLOCK_%d", suffix, get_irn_node_nr(true_block));
468 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* true case */");
469 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
471 if (false_block == sched_next_block(block)) {
472 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* fallthrough BLOCK_%d */", get_irn_node_nr(false_block));
473 arm_fprintf_format(out, "", cmnt_buf, irn);
476 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "b BLOCK_%d", get_irn_node_nr(false_block));
477 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* false case */");
478 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
484 static void emit_arm_CopyB(ir_node *irn, void *env) {
485 arm_emit_env_t *emit_env = env;
486 FILE *out = emit_env->out;
487 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
488 unsigned int size = get_tarval_long(get_arm_value(irn));
489 const lc_arg_env_t *arg_env = arm_get_arg_env();
491 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);
493 assert ( size > 0 && "CopyB needs size > 0" );
501 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldr %%r12, [%2S, #0]!", irn);
502 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
503 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "str %%r12, [%1S, #0]!", irn);
504 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
507 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldmia %2S!, {%%r12, %3S}", irn, irn);
508 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
509 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "stmia %1S!, {%%r12, %3S}", irn, irn);
510 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
513 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldmia %2S!, {%%r12, %3S, %4S}", irn, irn, irn);
514 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
515 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "stmia %1S!, {%%r12, %3S, %4S}", irn, irn, irn);
516 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
521 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "ldmia %2S!, {%%r12, %3S, %4S, %5S}", irn, irn, irn, irn);
522 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
523 lc_esnprintf(arg_env, cmd_buf, SNPRINTF_BUF_LEN, "stmia %1S!, {%%r12, %3S, %4S, %5S}", irn, irn, irn, irn);
524 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
529 static void emit_arm_SwitchJmp(ir_node *irn, void *env) {
530 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
531 const ir_edge_t *edge;
533 arm_emit_env_t *emit_env = env;
534 FILE *out = emit_env->out;
539 int default_block_num;
541 block_nr = get_irn_node_nr(irn);
542 n_projs = get_arm_n_projs(irn);
544 projs = xcalloc(n_projs , sizeof(ir_node*));
546 foreach_out_edge(irn, edge) {
547 proj = get_edge_src_irn(edge);
548 assert(is_Proj(proj) && "Only proj allowed at SwitchJmp");
550 if (get_Proj_proj(proj) == get_arm_default_proj_num(irn))
551 default_block_num = get_irn_node_nr(get_irn_link(proj));
553 projs[get_Proj_proj(proj)] = proj;
556 // CMP %1S, n_projs - 1
561 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "cmp %1S, #%u", irn, n_projs - 1);
562 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
563 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
565 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "bhi BLOCK_%d", default_block_num);
566 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
567 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
570 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ldr %%r12, TABLE_%d_START", block_nr);
571 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
572 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
574 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %%r12, %%r12, %1S, LSL #2", irn);
575 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
576 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
578 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ldr %%r15, [%%r12, #0]");
579 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "", irn);
580 arm_fprintf_format(out, cmd_buf, cmnt_buf, irn);
582 // LDR %r12, .TABLE_X_START
583 // ADD %r12, %r12, [%1S, LSL #2]
586 fprintf(out, "TABLE_%d_START:\n\t.word\tTABLE_%d\n", block_nr, block_nr);
587 fprintf(out, "\t.align 2\n");
588 fprintf(out, "TABLE_%d:\n", block_nr);
591 for ( i=0; i<n_projs; i++) {
595 block = get_irn_link(proj);
597 block = get_irn_link(projs[get_arm_default_proj_num(irn)]);
599 fprintf(out, "\t.word\tBLOCK_%ld\n",get_irn_node_nr(block));
601 fprintf(out, "\t.align 2\n");
606 /************************************************************************/
608 /************************************************************************/
610 static void emit_be_Call(ir_node *irn, void *env) {
611 arm_emit_env_t *emit_env = env;
612 FILE *F = emit_env->out;
613 entity *ent = be_Call_get_entity(irn);
614 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
617 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "bl %s", get_entity_ld_name(ent));
619 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "%1D", get_irn_n(irn, be_pos_Call_ptr));
620 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* %+F (be_Call) */", irn);
621 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
624 /** Emit an IncSP node */
625 static void emit_be_IncSP(const ir_node *irn, arm_emit_env_t *emit_env) {
626 FILE *F = emit_env->out;
627 unsigned offs = be_get_IncSP_offset(irn);
629 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
630 lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %1D, %1S, #%O", irn, irn, irn );
631 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* IncSP(%O) */", irn);
632 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
634 char cmnt_buf[SNPRINTF_BUF_LEN];
635 lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* omitted IncSP(%O) */", irn);
636 arm_fprintf_format(F, "", cmnt_buf, irn);
640 // void emit_be_AddSP(const ir_node *irn, arm_emit_env_t *emit_env) {
641 // FILE *F = emit_env->out;
642 // char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
643 // lc_esnprintf(arm_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "ADD %1D, %1S, %2S", irn, irn, irn );
644 // lc_esnprintf(arm_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "/* AddSP(%2S) */", irn);
645 // lc_efprintf(arm_get_arg_env(), F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, irn);
648 static void emit_be_Copy(const ir_node *irn, arm_emit_env_t *emit_env) {
649 FILE *F = emit_env->out;
650 ir_mode *mode = get_irn_mode(irn);
651 const lc_arg_env_t *arm_env = arm_get_arg_env();
652 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
654 if (get_in_reg(irn, 0) == get_out_reg(irn, 0)) {
655 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* omitted Copy: %1S -> %1D */", irn, irn);
656 lc_efprintf(arm_env, F, "\t%-35s %-60s /* %+F */\n", "", cmnt_buf, irn);
660 if (mode_is_float(mode)) {
661 if (USE_FPA(emit_env->cg->isa)) {
662 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "mvf%M %1D, %1S", irn, irn, irn);
663 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Copy: %1S -> %1D */", irn, irn);
664 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
667 assert(0 && "move not supported for this mode");
669 } else if (mode_is_numP(mode)) {
670 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %1S", irn, irn);
671 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Copy: %1S -> %1D */", irn, irn);
672 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
674 assert(0 && "move not supported for this mode");
676 // emit_arm_Copy(irn, emit_env);
680 * Emit code for a Spill.
682 static void emit_be_Spill(const ir_node *irn, arm_emit_env_t *emit_env) {
683 FILE *F = emit_env->out;
684 ir_mode *mode = get_irn_mode(irn);
685 const lc_arg_env_t *arm_env = arm_get_arg_env();
686 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
688 if (mode_is_float(mode)) {
689 if (USE_FPA(emit_env->cg->isa)) {
690 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "stf %2S, [%1S, #%O]", irn, irn, irn );
691 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Spill(%2S) -> (%1S) */", irn, irn);
692 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
695 assert(0 && "move not supported for this mode");
697 } else if (mode_is_dataM(mode)) {
698 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "str %2S, [%1S, #%O]", irn, irn, irn );
699 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Spill(%2S) -> (%1S) */", irn, irn);
700 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
702 assert(0 && "spill not supported for this mode");
707 * Emit code for a Reload.
709 static void emit_be_Reload(const ir_node* irn, arm_emit_env_t *emit_env) {
710 FILE *F = emit_env->out;
711 ir_mode *mode = get_irn_mode(irn);
712 const lc_arg_env_t *arm_env = arm_get_arg_env();
713 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
715 if (mode_is_float(mode)) {
716 if (USE_FPA(emit_env->cg->isa)) {
717 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldf %1D, [%1S, #%O]", irn, irn, irn );
718 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Reload(%1S) -> (%1D) */", irn, irn);
719 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
722 assert(0 && "move not supported for this mode");
724 } else if (mode_is_dataM(mode)) {
725 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldr %1D, [%1S, #%O]", irn, irn, irn );
726 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* Reload(%1S) -> (%1D) */", irn, irn);
727 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
729 assert(0 && "reload not supported for this mode");
733 static void emit_be_Perm(const ir_node* irn, arm_emit_env_t *emit_env) {
734 FILE *F = emit_env->out;
735 ir_mode *mode = get_irn_mode(irn);
736 const lc_arg_env_t *arm_env = arm_get_arg_env();
737 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
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, "/* begin Perm(%1S, %2S) */", irn, irn);
741 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
743 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "eor %2S, %1S, %2S", irn, irn, irn);
744 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, " ");
745 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
747 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "eor %1S, %1S, %2S", irn, irn, irn);
748 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* end Perm(%1S, %2S) */", irn, irn);
749 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
752 static void emit_be_StackParam(const ir_node *irn, arm_emit_env_t *emit_env) {
753 FILE *F = emit_env->out;
754 ir_mode *mode = get_irn_mode(irn);
755 const lc_arg_env_t *arm_env = arm_get_arg_env();
756 char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
758 if (mode_is_float(mode)) {
759 if (USE_FPA(emit_env->cg->isa)) {
760 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldf %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);
765 assert(0 && "move not supported for this mode");
768 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "ldr %1D, [%1S, #%O]", irn, irn, irn );
769 lc_esnprintf(arm_env, cmnt_buf, SNPRINTF_BUF_LEN, "/* StackParam: (%1S + %O) -> %1D */",irn , irn, irn, get_irn_n(irn, 0));
770 arm_fprintf_format(F, cmd_buf, cmnt_buf, irn);
774 /************************************************************************/
776 /************************************************************************/
778 static void emit_Jmp(ir_node *irn, void *env) {
779 char cmd_buf[SNPRINTF_BUF_LEN];
780 arm_emit_env_t *emit_env = env;
781 FILE *F = emit_env->out;
782 const ir_edge_t *edge = get_irn_out_edge_first(irn);
783 const lc_arg_env_t *arm_env = arm_get_arg_env();
784 ir_node *target_block = get_edge_src_irn(edge);
786 lc_esnprintf(arm_env, cmd_buf, SNPRINTF_BUF_LEN, "b BLOCK_%d", get_irn_node_nr(target_block));
787 arm_fprintf_format(F, cmd_buf, "/* unconditional Jump */", irn);
790 static void emit_arm_fpaDbl2GP(const ir_node *n, arm_emit_env_t *env) {
793 const lc_arg_env_t *arg_env = arm_get_arg_env();
795 lc_esnprintf(arg_env, cmd_buf, 256, "stfd %1S, [sp, #-8]! ", n);
796 arm_fprintf_format(F, cmd_buf, "/* Push fp to stack */", n);
798 lc_esnprintf(arg_env, cmd_buf, 256, "ldmfd sp!, {%2D, %1D} ", n, n);
799 arm_fprintf_format(F, cmd_buf, "/* Pop destination */", n);
802 static void emit_silence(ir_node *irn, void *env) {
807 /***********************************************************************************
810 * _ __ ___ __ _ _ _ __ | |_ _ __ __ _ _ __ ___ _____ _____ _ __| | __
811 * | '_ ` _ \ / _` | | '_ \ | _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
812 * | | | | | | (_| | | | | | | | | | | (_| | | | | | | __/\ V V / (_) | | | <
813 * |_| |_| |_|\__,_|_|_| |_| |_| |_| \__,_|_| |_| |_|\___| \_/\_/ \___/|_| |_|\_\
815 ***********************************************************************************/
818 * Enters the emitter functions for handled nodes into the generic
819 * pointer of an opcode.
821 static void arm_register_emitters(void) {
823 #define ARM_EMIT(a) op_arm_##a->ops.generic = (op_func)emit_arm_##a
824 #define EMIT(a) op_##a->ops.generic = (op_func)emit_##a
825 #define BE_EMIT(a) op_be_##a->ops.generic = (op_func)emit_be_##a
826 #define SILENCE(a) op_##a->ops.generic = (op_func)emit_silence
828 /* first clear the generic function pointer for all ops */
829 clear_irp_opcodes_generic_func();
831 /* register all emitter functions defined in spec */
832 arm_register_spec_emitters();
834 /* other emitter functions */
837 // ARM_EMIT(CopyB_i);
861 SILENCE(be_CopyKeep);
870 typedef void (node_emitter)(const ir_node *, void *);
873 * Emits code for a node.
875 static void arm_emit_node(const ir_node *irn, void *env) {
876 arm_emit_env_t *emit_env = env;
877 FILE *F = emit_env->out;
878 ir_op *op = get_irn_op(irn);
879 DEBUG_ONLY(firm_dbg_module_t *mod = emit_env->mod;)
881 DBG((mod, LEVEL_1, "emitting code for %+F\n", irn));
883 if (op->ops.generic) {
884 node_emitter *emit = (node_emitter *)op->ops.generic;
888 ir_fprintf(F, "\t%-35s /* %+F %G */\n", "", irn, irn);
893 * Walks over the nodes in a block connected by scheduling edges
894 * and emits code for each node.
896 void arm_gen_block(ir_node *block, void *env) {
899 fprintf(((arm_emit_env_t *)env)->out, "BLOCK_%d:\n", get_irn_node_nr(block));
900 sched_foreach(block, irn) {
901 arm_emit_node(irn, env);
907 * Emits code for function start.
909 void arm_emit_start(FILE *F, ir_graph *irg) {
910 entity *ent = get_irg_entity(irg);
911 const char *irg_name = get_entity_ld_name(ent);
912 arm_switch_section(F, SECTION_TEXT);
913 fprintf(F, "\t.align 2\n");
915 if (get_entity_visibility(ent) == visibility_external_visible)
916 fprintf(F, "\t.global %s\n", irg_name);
917 fprintf(F, "%s:\n", irg_name);
921 * Emits code for function end
923 void arm_emit_end(FILE *F, ir_graph *irg) {
924 fprintf(F, "\t.ident \"firmcc\"\n");
928 * Sets labels for control flow nodes (jump target)
929 * TODO: Jump optimization
931 void arm_gen_labels(ir_node *block, void *env) {
933 int n = get_Block_n_cfgpreds(block);
935 for (n--; n >= 0; n--) {
936 pred = get_Block_cfgpred(block, n);
937 set_irn_link(pred, block);
943 * Main driver. Emits the code for one routine.
945 void arm_gen_routine(FILE *F, ir_graph *irg, const arm_code_gen_t *cg) {
946 SymConstEntry *entry;
947 arm_emit_env_t emit_env;
952 emit_env.arch_env = cg->arch_env;
954 emit_env.symbols = NULL;
955 obstack_init(&emit_env.obst);
956 FIRM_DBG_REGISTER(emit_env.mod, "firm.be.arm.emit");
958 /* set the global arch_env (needed by print hooks) */
959 arch_env = cg->arch_env;
961 arm_register_emitters();
963 /* create the block schedule. For now, we don't need it earlier. */
964 blk_sched = sched_create_block_schedule(cg->irg);
966 arm_emit_start(F, irg);
967 irg_block_walk_graph(irg, arm_gen_labels, NULL, &emit_env);
969 n = ARR_LEN(blk_sched);
970 for (i = 0; i < n;) {
971 ir_node *block, *next_bl;
973 block = blk_sched[i];
975 next_bl = i < n ? blk_sched[i] : NULL;
977 /* set here the link. the emitter expects to find the next block here */
978 set_irn_link(block, next_bl);
979 arm_gen_block(block, &emit_env);
982 /* emit SymConst values */
983 if (emit_env.symbols)
984 fprintf(F, "\t.align 2\n");
986 for (entry = emit_env.symbols; entry; entry = entry->next) {
987 fprintf(F, ".L%u:\n", entry->label);
988 lc_efprintf(arm_get_arg_env(), F, "\t.word\t%C\n", entry->symconst);
991 obstack_free(&emit_env.obst, NULL);