1 /* The main TEMPLATE backend driver file. */
7 #include "pseudo_irg.h"
17 #include "../bearch.h" /* the general register allocator interface */
18 #include "../benode_t.h"
19 #include "../belower.h"
20 #include "../besched_t.h"
23 #include "../bemodule.h"
25 #include "bearch_TEMPLATE_t.h"
27 #include "TEMPLATE_new_nodes.h" /* TEMPLATE nodes interface */
28 #include "gen_TEMPLATE_regalloc_if.h" /* the generated interface (register type and class defenitions) */
29 #include "TEMPLATE_gen_decls.h" /* interface declaration emitter */
30 #include "TEMPLATE_transform.h"
31 #include "TEMPLATE_emitter.h"
32 #include "TEMPLATE_map_regs.h"
34 #define DEBUG_MODULE "firm.be.TEMPLATE.isa"
36 /* TODO: ugly, but we need it to get access to the registers assigned to Phi nodes */
37 static set *cur_reg_set = NULL;
39 /**************************************************
42 * _ __ ___ __ _ __ _| | | ___ ___ _| |_
43 * | '__/ _ \/ _` | / _` | | |/ _ \ / __| | | _|
44 * | | | __/ (_| | | (_| | | | (_) | (__ | | |
45 * |_| \___|\__, | \__,_|_|_|\___/ \___| |_|_|
48 **************************************************/
50 static ir_node *my_skip_proj(const ir_node *n) {
57 * Return register requirements for a TEMPLATE node.
58 * If the node returns a tuple (mode_T) then the proj's
59 * will be asked for this information.
61 static const arch_register_req_t *TEMPLATE_get_irn_reg_req(const void *self, arch_register_req_t *req, const ir_node *irn, int pos) {
62 const TEMPLATE_register_req_t *irn_req;
63 long node_pos = pos == -1 ? 0 : pos;
64 ir_mode *mode = get_irn_mode(irn);
65 FIRM_DBG_REGISTER(firm_dbg_module_t *mod, DEBUG_MODULE);
67 if (mode == mode_T || mode == mode_M) {
68 DBG((mod, LEVEL_1, "ignoring mode_T, mode_M node %+F\n", irn));
72 DBG((mod, LEVEL_1, "get requirements at pos %d for %+F ... ", pos, irn));
75 /* in case of a proj, we need to get the correct OUT slot */
76 /* of the node corresponding to the proj number */
78 node_pos = TEMPLATE_translate_proj_pos(irn);
84 irn = my_skip_proj(irn);
86 DB((mod, LEVEL_1, "skipping Proj, going to %+F at pos %d ... ", irn, node_pos));
89 /* get requirements for our own nodes */
90 if (is_TEMPLATE_irn(irn)) {
92 irn_req = get_TEMPLATE_in_req(irn, pos);
95 irn_req = get_TEMPLATE_out_req(irn, node_pos);
98 DB((mod, LEVEL_1, "returning reqs for %+F at pos %d\n", irn, pos));
100 memcpy(req, &(irn_req->req), sizeof(*req));
102 if (arch_register_req_is(&(irn_req->req), should_be_same)) {
103 assert(irn_req->same_pos >= 0 && "should be same constraint for in -> out NYI");
104 req->other_same = get_irn_n(irn, irn_req->same_pos);
107 if (arch_register_req_is(&(irn_req->req), should_be_different)) {
108 assert(irn_req->different_pos >= 0 && "should be different constraint for in -> out NYI");
109 req->other_different = get_irn_n(irn, irn_req->different_pos);
112 /* get requirements for FIRM nodes */
114 /* treat Phi like Const with default requirements */
116 DB((mod, LEVEL_1, "returning standard reqs for %+F\n", irn));
118 if (mode_is_float(mode)) {
119 memcpy(req, &(TEMPLATE_default_req_TEMPLATE_floating_point.req), sizeof(*req));
121 else if (mode_is_int(mode) || mode_is_reference(mode)) {
122 memcpy(req, &(TEMPLATE_default_req_TEMPLATE_general_purpose.req), sizeof(*req));
124 else if (mode == mode_T || mode == mode_M) {
125 DBG((mod, LEVEL_1, "ignoring Phi node %+F\n", irn));
129 assert(0 && "unsupported Phi-Mode");
133 DB((mod, LEVEL_1, "returning NULL for %+F (node not supported)\n", irn));
141 static void TEMPLATE_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg) {
145 pos = TEMPLATE_translate_proj_pos(irn);
146 irn = my_skip_proj(irn);
149 if (is_TEMPLATE_irn(irn)) {
150 const arch_register_t **slots;
152 slots = get_TEMPLATE_slots(irn);
156 /* here we set the registers for the Phi nodes */
157 TEMPLATE_set_firm_reg(irn, reg, cur_reg_set);
161 static const arch_register_t *TEMPLATE_get_irn_reg(const void *self, const ir_node *irn) {
163 const arch_register_t *reg = NULL;
166 pos = TEMPLATE_translate_proj_pos(irn);
167 irn = my_skip_proj(irn);
170 if (is_TEMPLATE_irn(irn)) {
171 const arch_register_t **slots;
172 slots = get_TEMPLATE_slots(irn);
176 reg = TEMPLATE_get_firm_reg(irn, cur_reg_set);
182 static arch_irn_class_t TEMPLATE_classify(const void *self, const ir_node *irn) {
183 irn = my_skip_proj(irn);
186 return arch_irn_class_branch;
188 else if (is_TEMPLATE_irn(irn)) {
189 return arch_irn_class_normal;
195 static arch_irn_flags_t TEMPLATE_get_flags(const void *self, const ir_node *irn) {
196 irn = my_skip_proj(irn);
198 if (is_TEMPLATE_irn(irn)) {
199 return get_TEMPLATE_flags(irn);
201 else if (is_Unknown(irn)) {
202 return arch_irn_flags_ignore;
208 static ir_entity *TEMPLATE_get_frame_entity(const void *self, const ir_node *irn) {
209 /* TODO: return the ir_entity assigned to the frame */
213 static void TEMPLATE_set_frame_entity(const void *self, const ir_node *irn, ir_entity *ent) {
214 /* TODO: set the ir_entity assigned to the frame */
218 * This function is called by the generic backend to correct offsets for
219 * nodes accessing the stack.
221 static void TEMPLATE_set_frame_offset(const void *self, ir_node *irn, int offset) {
222 /* TODO: correct offset if irn accesses the stack */
225 static int TEMPLATE_get_sp_bias(const void *self, const ir_node *irn) {
229 /* fill register allocator interface */
231 static const arch_irn_ops_if_t TEMPLATE_irn_ops_if = {
232 TEMPLATE_get_irn_reg_req,
233 TEMPLATE_set_irn_reg,
234 TEMPLATE_get_irn_reg,
237 TEMPLATE_get_frame_entity,
238 TEMPLATE_set_frame_entity,
239 TEMPLATE_set_frame_offset,
240 TEMPLATE_get_sp_bias,
241 NULL, /* get_inverse */
242 NULL, /* get_op_estimated_cost */
243 NULL, /* possible_memory_operand */
244 NULL, /* perform_memory_operand */
247 TEMPLATE_irn_ops_t TEMPLATE_irn_ops = {
248 &TEMPLATE_irn_ops_if,
254 /**************************************************
257 * ___ ___ __| | ___ __ _ ___ _ __ _| |_
258 * / __/ _ \ / _` |/ _ \/ _` |/ _ \ '_ \ | | _|
259 * | (_| (_) | (_| | __/ (_| | __/ | | | | | |
260 * \___\___/ \__,_|\___|\__, |\___|_| |_| |_|_|
263 **************************************************/
266 * Transforms the standard firm graph into
267 * a TEMLPATE firm graph
269 static void TEMPLATE_prepare_graph(void *self) {
270 TEMPLATE_code_gen_t *cg = self;
272 irg_walk_blkwise_graph(cg->irg, NULL, TEMPLATE_transform_node, cg);
278 * Called immediatly before emit phase.
280 static void TEMPLATE_finish_irg(void *self) {
281 TEMPLATE_code_gen_t *cg = self;
282 ir_graph *irg = cg->irg;
284 dump_ir_block_graph_sched(irg, "-TEMPLATE-finished");
289 * These are some hooks which must be filled but are probably not needed.
291 static void TEMPLATE_before_sched(void *self) {
292 /* Some stuff you need to do after scheduling but before register allocation */
295 static void TEMPLATE_before_ra(void *self, be_irg_t *birg) {
296 /* Some stuff you need to do after scheduling but before register allocation */
299 static void TEMPLATE_after_ra(void *self) {
300 /* Some stuff you need to do immediatly after register allocation */
306 * Emits the code, closes the output file and frees
307 * the code generator interface.
309 static void TEMPLATE_emit_and_done(void *self) {
310 TEMPLATE_code_gen_t *cg = self;
311 ir_graph *irg = cg->irg;
312 FILE *out = cg->isa->out;
314 if (cg->emit_decls) {
315 TEMPLATE_gen_decls(out);
319 TEMPLATE_gen_routine(out, irg, cg);
323 /* de-allocate code generator */
324 del_set(cg->reg_set);
328 static void *TEMPLATE_cg_init(const be_irg_t *birg);
330 static const arch_code_generator_if_t TEMPLATE_code_gen_if = {
332 TEMPLATE_prepare_graph,
333 TEMPLATE_before_sched, /* before scheduling hook */
334 TEMPLATE_before_ra, /* before register allocation hook */
335 TEMPLATE_after_ra, /* after register allocation hook */
337 TEMPLATE_emit_and_done
341 * Initializes the code generator.
343 static void *TEMPLATE_cg_init(const be_irg_t *birg) {
344 TEMPLATE_isa_t *isa = (TEMPLATE_isa_t *)birg->main_env->arch_env->isa;
345 TEMPLATE_code_gen_t *cg = xmalloc(sizeof(*cg));
347 cg->impl = &TEMPLATE_code_gen_if;
349 cg->reg_set = new_set(TEMPLATE_cmp_irn_reg_assoc, 1024);
350 cg->arch_env = birg->main_env->arch_env;
353 FIRM_DBG_REGISTER(cg->mod, "firm.be.TEMPLATE.cg");
357 if (isa->num_codegens > 1)
362 cur_reg_set = cg->reg_set;
364 TEMPLATE_irn_ops.cg = cg;
366 return (arch_code_generator_t *)cg;
371 /*****************************************************************
372 * ____ _ _ _____ _____
373 * | _ \ | | | | |_ _|/ ____| /\
374 * | |_) | __ _ ___| | _____ _ __ __| | | | | (___ / \
375 * | _ < / _` |/ __| |/ / _ \ '_ \ / _` | | | \___ \ / /\ \
376 * | |_) | (_| | (__| < __/ | | | (_| | _| |_ ____) / ____ \
377 * |____/ \__,_|\___|_|\_\___|_| |_|\__,_| |_____|_____/_/ \_\
379 *****************************************************************/
381 static TEMPLATE_isa_t TEMPLATE_isa_template = {
383 &TEMPLATE_general_purpose_regs[REG_R6],
384 &TEMPLATE_general_purpose_regs[REG_R7],
390 * Initializes the backend ISA and opens the output file.
392 static void *TEMPLATE_init(FILE *outfile) {
393 static int inited = 0;
399 isa = xcalloc(1, sizeof(*isa));
400 memcpy(isa, &TEMPLATE_isa_template, sizeof(*isa));
404 TEMPLATE_register_init(isa);
405 TEMPLATE_create_opcodes();
415 * Closes the output file and frees the ISA structure.
417 static void TEMPLATE_done(void *self) {
423 static int TEMPLATE_get_n_reg_class(const void *self) {
427 static const arch_register_class_t *TEMPLATE_get_reg_class(const void *self, int i) {
428 assert(i >= 0 && i < N_CLASSES && "Invalid TEMPLATE register class requested.");
429 return &TEMPLATE_reg_classes[i];
435 * Get the register class which shall be used to store a value of a given mode.
436 * @param self The this pointer.
437 * @param mode The mode in question.
438 * @return A register class which can hold values of the given mode.
440 const arch_register_class_t *TEMPLATE_get_reg_class_for_mode(const void *self, const ir_mode *mode) {
441 if (mode_is_float(mode))
442 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_floating_point];
444 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_general_purpose];
450 be_abi_call_flags_bits_t flags;
451 const arch_env_t *arch_env;
452 const arch_isa_t *isa;
454 } TEMPLATE_abi_env_t;
456 static void *TEMPLATE_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
458 TEMPLATE_abi_env_t *env = xmalloc(sizeof(env[0]));
459 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
460 env->flags = fl.bits;
462 env->arch_env = arch_env;
463 env->isa = arch_env->isa;
468 * Get the between type for that call.
469 * @param self The callback object.
470 * @return The between type of for that call.
472 static ir_type *TEMPLATE_get_between_type(void *self) {
473 TEMPLATE_abi_env_t *env = self;
474 static ir_type *between_type = NULL;
475 static ir_entity *old_bp_ent = NULL;
478 ir_entity *ret_addr_ent;
479 ir_type *ret_addr_type = new_type_primitive(new_id_from_str("return_addr"), mode_P);
480 ir_type *old_bp_type = new_type_primitive(new_id_from_str("bp"), mode_P);
482 between_type = new_type_class(new_id_from_str("TEMPLATE_between_type"));
483 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
484 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
486 set_entity_offset(old_bp_ent, 0);
487 set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
488 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
494 static void TEMPLATE_abi_dont_save_regs(void *self, pset *s)
496 TEMPLATE_abi_env_t *env = self;
497 if (env->flags.try_omit_fp) {
498 /* insert the BP register into the ignore set */
499 pset_insert_ptr(s, env->isa->bp);
504 * Build the prolog, return the BASE POINTER register
506 static const arch_register_t *TEMPLATE_abi_prologue(void *self, ir_node **mem, pmap *reg_map) {
507 TEMPLATE_abi_env_t *env = self;
509 if(env->flags.try_omit_fp)
514 /* Build the epilog */
515 static void arm_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_map) {
516 TEMPLATE_abi_env_t *env = self;
519 static const be_abi_callbacks_t TEMPLATE_abi_callbacks = {
522 TEMPLATE_get_between_type,
523 TEMPLATE_abi_dont_save_regs,
524 TEMPLATE_abi_prologue,
529 * Get the ABI restrictions for procedure calls.
530 * @param self The this pointer.
531 * @param method_type The type of the method (procedure) in question.
532 * @param abi The abi object to be modified
534 void TEMPLATE_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi) {
537 int i, n = get_method_n_params(method_type);
538 be_abi_call_flags_t call_flags;
540 /* set abi flags for calls */
541 call_flags.bits.left_to_right = 0;
542 call_flags.bits.store_args_sequential = 1;
543 call_flags.bits.try_omit_fp = 1;
544 call_flags.bits.fp_free = 0;
545 call_flags.bits.call_has_imm = 1;
547 /* set stack parameter passing style */
548 be_abi_call_set_flags(abi, call_flags, &TEMPLATE_abi_callbacks);
550 for (i = 0; i < n; i++) {
551 /* TODO: implement register parameter: */
552 /* reg = get reg for param i; */
553 /* be_abi_call_param_reg(abi, i, reg); */
555 /* default: all parameters on stack */
556 be_abi_call_param_stack(abi, i, 4, 0, 0);
559 /* TODO: set correct return register */
560 /* default: return value is in R0 resp. F0 */
561 if (get_method_n_ress(method_type) > 0) {
562 tp = get_method_res_type(method_type, 0);
563 mode = get_type_mode(tp);
565 be_abi_call_res_reg(abi, 0,
566 mode_is_float(mode) ? &TEMPLATE_floating_point_regs[REG_F0] : &TEMPLATE_general_purpose_regs[REG_R0]);
570 static const void *TEMPLATE_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn) {
571 return &TEMPLATE_irn_ops;
574 const arch_irn_handler_t TEMPLATE_irn_handler = {
578 const arch_irn_handler_t *TEMPLATE_get_irn_handler(const void *self) {
579 return &TEMPLATE_irn_handler;
582 int TEMPLATE_to_appear_in_schedule(void *block_env, const ir_node *irn) {
583 return is_TEMPLATE_irn(irn);
587 * Initializes the code generator interface.
589 static const arch_code_generator_if_t *TEMPLATE_get_code_generator_if(void *self) {
590 return &TEMPLATE_code_gen_if;
593 list_sched_selector_t TEMPLATE_sched_selector;
596 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
598 static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(const void *self, list_sched_selector_t *selector) {
599 memcpy(&TEMPLATE_sched_selector, trivial_selector, sizeof(list_sched_selector_t));
600 TEMPLATE_sched_selector.to_appear_in_schedule = TEMPLATE_to_appear_in_schedule;
601 return &TEMPLATE_sched_selector;
604 static const ilp_sched_selector_t *TEMPLATE_get_ilp_sched_selector(const void *self) {
609 * Returns the necessary byte alignment for storing a register of given class.
611 static int TEMPLATE_get_reg_class_alignment(const void *self, const arch_register_class_t *cls) {
612 ir_mode *mode = arch_register_class_mode(cls);
613 return get_mode_size_bytes(mode);
617 * Returns the libFirm configuration parameter for this backend.
619 static const backend_params *TEMPLATE_get_libfirm_params(void) {
620 static arch_dep_params_t ad = {
622 0, /* Muls are fast enough on Firm */
623 31, /* shift would be ok */
628 static backend_params p = {
629 NULL, /* no additional opcodes */
630 NULL, /* will be set later */
631 0, /* no dword lowering */
632 NULL, /* no creator function */
633 NULL, /* context for create_intrinsic_fkt */
640 static const be_execution_unit_t ***TEMPLATE_get_allowed_execution_units(const void *self, const ir_node *irn) {
646 static const be_machine_t *TEMPLATE_get_machine(const void *self) {
653 const arch_isa_if_t TEMPLATE_isa_if = {
656 TEMPLATE_get_n_reg_class,
657 TEMPLATE_get_reg_class,
658 TEMPLATE_get_reg_class_for_mode,
659 TEMPLATE_get_call_abi,
660 TEMPLATE_get_irn_handler,
661 TEMPLATE_get_code_generator_if,
662 TEMPLATE_get_list_sched_selector,
663 TEMPLATE_get_ilp_sched_selector,
664 TEMPLATE_get_reg_class_alignment,
665 TEMPLATE_get_libfirm_params,
666 TEMPLATE_get_allowed_execution_units,
670 void be_init_arch_TEMPLATE(void)
672 be_register_isa_if("TEMPLATE", &TEMPLATE_isa_if);
675 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_TEMPLATE);