1 /* The main TEMPLATE backend driver file. */
8 #include "pseudo_irg.h"
18 #include "../bearch.h" /* the general register allocator interface */
19 #include "../benode_t.h"
20 #include "../belower.h"
21 #include "../besched_t.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 entity *TEMPLATE_get_frame_entity(const void *self, const ir_node *irn) {
209 /* TODO: return the entity assigned to the frame */
213 static void TEMPLATE_set_frame_entity(const void *self, const ir_node *irn, entity *ent) {
214 /* TODO: set the 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) {
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 * Produces the type which sits between the stack args and the locals on the stack.
451 * it will contain the return address and space to store the old base pointer.
452 * @return The Firm type modelling the ABI between type.
454 static ir_type *get_between_type(void) {
455 static ir_type *between_type = NULL;
456 static entity *old_bp_ent = NULL;
459 entity *ret_addr_ent;
460 ir_type *ret_addr_type = new_type_primitive(new_id_from_str("return_addr"), mode_P);
461 ir_type *old_bp_type = new_type_primitive(new_id_from_str("bp"), mode_P);
463 between_type = new_type_class(new_id_from_str("TEMPLATE_between_type"));
464 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
465 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
467 set_entity_offset_bytes(old_bp_ent, 0);
468 set_entity_offset_bytes(ret_addr_ent, get_type_size_bytes(old_bp_type));
469 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
476 * Get the ABI restrictions for procedure calls.
477 * @param self The this pointer.
478 * @param method_type The type of the method (procedure) in question.
479 * @param abi The abi object to be modified
481 void TEMPLATE_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi) {
482 ir_type *between_type;
485 int i, n = get_method_n_params(method_type);
486 const arch_register_t *reg;
487 be_abi_call_flags_t call_flags;
489 /* set abi flags for calls */
490 call_flags.bits.left_to_right = 0;
491 call_flags.bits.store_args_sequential = 1;
492 call_flags.bits.try_omit_fp = 1;
493 call_flags.bits.fp_free = 0;
494 call_flags.bits.call_has_imm = 1;
496 /* get the between type and the frame pointer save entity */
497 between_type = get_between_type();
499 /* set stack parameter passing style */
500 be_abi_call_set_flags(abi, call_flags, between_type);
502 for (i = 0; i < n; i++) {
503 /* TODO: implement register parameter: */
504 /* reg = get reg for param i; */
505 /* be_abi_call_param_reg(abi, i, reg); */
507 /* default: all parameters on stack */
508 be_abi_call_param_stack(abi, i, 4, 0, 0);
511 /* TODO: set correct return register */
512 /* default: return value is in R0 resp. F0 */
513 if (get_method_n_ress(method_type) > 0) {
514 tp = get_method_res_type(method_type, 0);
515 mode = get_type_mode(tp);
517 be_abi_call_res_reg(abi, 0,
518 mode_is_float(mode) ? &TEMPLATE_floating_point_regs[REG_F0] : &TEMPLATE_general_purpose_regs[REG_R0]);
522 static const void *TEMPLATE_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn) {
523 return &TEMPLATE_irn_ops;
526 const arch_irn_handler_t TEMPLATE_irn_handler = {
530 const arch_irn_handler_t *TEMPLATE_get_irn_handler(const void *self) {
531 return &TEMPLATE_irn_handler;
534 int TEMPLATE_to_appear_in_schedule(void *block_env, const ir_node *irn) {
535 return is_TEMPLATE_irn(irn);
539 * Initializes the code generator interface.
541 static const arch_code_generator_if_t *TEMPLATE_get_code_generator_if(void *self) {
542 return &TEMPLATE_code_gen_if;
545 list_sched_selector_t TEMPLATE_sched_selector;
548 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
550 static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(const void *self) {
551 memcpy(&TEMPLATE_sched_selector, trivial_selector, sizeof(list_sched_selector_t));
552 TEMPLATE_sched_selector.to_appear_in_schedule = TEMPLATE_to_appear_in_schedule;
553 return &TEMPLATE_sched_selector;
557 * Returns the necessary byte alignment for storing a register of given class.
559 static int TEMPLATE_get_reg_class_alignment(const void *self, const arch_register_class_t *cls) {
560 ir_mode *mode = arch_register_class_mode(cls);
561 return get_mode_size_bytes(mode);
565 * Returns the libFirm configuration parameter for this backend.
567 static const backend_params *TEMPLATE_get_libfirm_params(void) {
568 static arch_dep_params_t ad = {
570 0, /* Muls are fast enough on Firm */
571 31, /* shift would be ok */
576 static backend_params p = {
577 NULL, /* no additional opcodes */
578 NULL, /* will be set later */
579 0, /* no dword lowering */
580 NULL, /* no creator function */
581 NULL, /* context for create_intrinsic_fkt */
589 static void TEMPLATE_register_options(lc_opt_entry_t *ent)
592 #endif /* WITH_LIBCORE */
594 const arch_isa_if_t TEMPLATE_isa_if = {
597 TEMPLATE_get_n_reg_class,
598 TEMPLATE_get_reg_class,
599 TEMPLATE_get_reg_class_for_mode,
600 TEMPLATE_get_call_abi,
601 TEMPLATE_get_irn_handler,
602 TEMPLATE_get_code_generator_if,
603 TEMPLATE_get_list_sched_selector,
604 TEMPLATE_get_reg_class_alignment,
605 TEMPLATE_get_libfirm_params,
607 TEMPLATE_register_options