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"
24 #include "../bemodule.h"
26 #include "bearch_TEMPLATE_t.h"
28 #include "TEMPLATE_new_nodes.h" /* TEMPLATE nodes interface */
29 #include "gen_TEMPLATE_regalloc_if.h" /* the generated interface (register type and class defenitions) */
30 #include "TEMPLATE_gen_decls.h" /* interface declaration emitter */
31 #include "TEMPLATE_transform.h"
32 #include "TEMPLATE_emitter.h"
33 #include "TEMPLATE_map_regs.h"
35 #define DEBUG_MODULE "firm.be.TEMPLATE.isa"
37 /* TODO: ugly, but we need it to get access to the registers assigned to Phi nodes */
38 static set *cur_reg_set = NULL;
40 /**************************************************
43 * _ __ ___ __ _ __ _| | | ___ ___ _| |_
44 * | '__/ _ \/ _` | / _` | | |/ _ \ / __| | | _|
45 * | | | __/ (_| | | (_| | | | (_) | (__ | | |
46 * |_| \___|\__, | \__,_|_|_|\___/ \___| |_|_|
49 **************************************************/
51 static ir_node *my_skip_proj(const ir_node *n) {
58 * Return register requirements for a TEMPLATE node.
59 * If the node returns a tuple (mode_T) then the proj's
60 * will be asked for this information.
62 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) {
63 const TEMPLATE_register_req_t *irn_req;
64 long node_pos = pos == -1 ? 0 : pos;
65 ir_mode *mode = get_irn_mode(irn);
66 FIRM_DBG_REGISTER(firm_dbg_module_t *mod, DEBUG_MODULE);
68 if (mode == mode_T || mode == mode_M) {
69 DBG((mod, LEVEL_1, "ignoring mode_T, mode_M node %+F\n", irn));
73 DBG((mod, LEVEL_1, "get requirements at pos %d for %+F ... ", pos, irn));
76 /* in case of a proj, we need to get the correct OUT slot */
77 /* of the node corresponding to the proj number */
79 node_pos = TEMPLATE_translate_proj_pos(irn);
85 irn = my_skip_proj(irn);
87 DB((mod, LEVEL_1, "skipping Proj, going to %+F at pos %d ... ", irn, node_pos));
90 /* get requirements for our own nodes */
91 if (is_TEMPLATE_irn(irn)) {
93 irn_req = get_TEMPLATE_in_req(irn, pos);
96 irn_req = get_TEMPLATE_out_req(irn, node_pos);
99 DB((mod, LEVEL_1, "returning reqs for %+F at pos %d\n", irn, pos));
101 memcpy(req, &(irn_req->req), sizeof(*req));
103 if (arch_register_req_is(&(irn_req->req), should_be_same)) {
104 assert(irn_req->same_pos >= 0 && "should be same constraint for in -> out NYI");
105 req->other_same = get_irn_n(irn, irn_req->same_pos);
108 if (arch_register_req_is(&(irn_req->req), should_be_different)) {
109 assert(irn_req->different_pos >= 0 && "should be different constraint for in -> out NYI");
110 req->other_different = get_irn_n(irn, irn_req->different_pos);
113 /* get requirements for FIRM nodes */
115 /* treat Phi like Const with default requirements */
117 DB((mod, LEVEL_1, "returning standard reqs for %+F\n", irn));
119 if (mode_is_float(mode)) {
120 memcpy(req, &(TEMPLATE_default_req_TEMPLATE_floating_point.req), sizeof(*req));
122 else if (mode_is_int(mode) || mode_is_reference(mode)) {
123 memcpy(req, &(TEMPLATE_default_req_TEMPLATE_general_purpose.req), sizeof(*req));
125 else if (mode == mode_T || mode == mode_M) {
126 DBG((mod, LEVEL_1, "ignoring Phi node %+F\n", irn));
130 assert(0 && "unsupported Phi-Mode");
134 DB((mod, LEVEL_1, "returning NULL for %+F (node not supported)\n", irn));
142 static void TEMPLATE_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg) {
146 pos = TEMPLATE_translate_proj_pos(irn);
147 irn = my_skip_proj(irn);
150 if (is_TEMPLATE_irn(irn)) {
151 const arch_register_t **slots;
153 slots = get_TEMPLATE_slots(irn);
157 /* here we set the registers for the Phi nodes */
158 TEMPLATE_set_firm_reg(irn, reg, cur_reg_set);
162 static const arch_register_t *TEMPLATE_get_irn_reg(const void *self, const ir_node *irn) {
164 const arch_register_t *reg = NULL;
167 pos = TEMPLATE_translate_proj_pos(irn);
168 irn = my_skip_proj(irn);
171 if (is_TEMPLATE_irn(irn)) {
172 const arch_register_t **slots;
173 slots = get_TEMPLATE_slots(irn);
177 reg = TEMPLATE_get_firm_reg(irn, cur_reg_set);
183 static arch_irn_class_t TEMPLATE_classify(const void *self, const ir_node *irn) {
184 irn = my_skip_proj(irn);
187 return arch_irn_class_branch;
189 else if (is_TEMPLATE_irn(irn)) {
190 return arch_irn_class_normal;
196 static arch_irn_flags_t TEMPLATE_get_flags(const void *self, const ir_node *irn) {
197 irn = my_skip_proj(irn);
199 if (is_TEMPLATE_irn(irn)) {
200 return get_TEMPLATE_flags(irn);
202 else if (is_Unknown(irn)) {
203 return arch_irn_flags_ignore;
209 static entity *TEMPLATE_get_frame_entity(const void *self, const ir_node *irn) {
210 /* TODO: return the entity assigned to the frame */
214 static void TEMPLATE_set_frame_entity(const void *self, const ir_node *irn, entity *ent) {
215 /* TODO: set the entity assigned to the frame */
219 * This function is called by the generic backend to correct offsets for
220 * nodes accessing the stack.
222 static void TEMPLATE_set_frame_offset(const void *self, ir_node *irn, int offset) {
223 /* TODO: correct offset if irn accesses the stack */
226 static int TEMPLATE_get_sp_bias(const void *self, const ir_node *irn) {
230 /* fill register allocator interface */
232 static const arch_irn_ops_if_t TEMPLATE_irn_ops_if = {
233 TEMPLATE_get_irn_reg_req,
234 TEMPLATE_set_irn_reg,
235 TEMPLATE_get_irn_reg,
238 TEMPLATE_get_frame_entity,
239 TEMPLATE_set_frame_entity,
240 TEMPLATE_set_frame_offset,
241 TEMPLATE_get_sp_bias,
242 NULL, /* get_inverse */
243 NULL, /* get_op_estimated_cost */
244 NULL, /* possible_memory_operand */
245 NULL, /* perform_memory_operand */
248 TEMPLATE_irn_ops_t TEMPLATE_irn_ops = {
249 &TEMPLATE_irn_ops_if,
255 /**************************************************
258 * ___ ___ __| | ___ __ _ ___ _ __ _| |_
259 * / __/ _ \ / _` |/ _ \/ _` |/ _ \ '_ \ | | _|
260 * | (_| (_) | (_| | __/ (_| | __/ | | | | | |
261 * \___\___/ \__,_|\___|\__, |\___|_| |_| |_|_|
264 **************************************************/
267 * Transforms the standard firm graph into
268 * a TEMLPATE firm graph
270 static void TEMPLATE_prepare_graph(void *self) {
271 TEMPLATE_code_gen_t *cg = self;
273 irg_walk_blkwise_graph(cg->irg, NULL, TEMPLATE_transform_node, cg);
279 * Called immediatly before emit phase.
281 static void TEMPLATE_finish_irg(void *self) {
282 TEMPLATE_code_gen_t *cg = self;
283 ir_graph *irg = cg->irg;
285 dump_ir_block_graph_sched(irg, "-TEMPLATE-finished");
290 * These are some hooks which must be filled but are probably not needed.
292 static void TEMPLATE_before_sched(void *self) {
293 /* Some stuff you need to do after scheduling but before register allocation */
296 static void TEMPLATE_before_ra(void *self) {
297 /* Some stuff you need to do after scheduling but before register allocation */
300 static void TEMPLATE_after_ra(void *self) {
301 /* Some stuff you need to do immediatly after register allocation */
307 * Emits the code, closes the output file and frees
308 * the code generator interface.
310 static void TEMPLATE_emit_and_done(void *self) {
311 TEMPLATE_code_gen_t *cg = self;
312 ir_graph *irg = cg->irg;
313 FILE *out = cg->isa->out;
315 if (cg->emit_decls) {
316 TEMPLATE_gen_decls(out);
320 TEMPLATE_gen_routine(out, irg, cg);
324 /* de-allocate code generator */
325 del_set(cg->reg_set);
329 static void *TEMPLATE_cg_init(const be_irg_t *birg);
331 static const arch_code_generator_if_t TEMPLATE_code_gen_if = {
333 TEMPLATE_prepare_graph,
334 TEMPLATE_before_sched, /* before scheduling hook */
335 TEMPLATE_before_ra, /* before register allocation hook */
336 TEMPLATE_after_ra, /* after register allocation hook */
338 TEMPLATE_emit_and_done
342 * Initializes the code generator.
344 static void *TEMPLATE_cg_init(const be_irg_t *birg) {
345 TEMPLATE_isa_t *isa = (TEMPLATE_isa_t *)birg->main_env->arch_env->isa;
346 TEMPLATE_code_gen_t *cg = xmalloc(sizeof(*cg));
348 cg->impl = &TEMPLATE_code_gen_if;
350 cg->reg_set = new_set(TEMPLATE_cmp_irn_reg_assoc, 1024);
351 cg->arch_env = birg->main_env->arch_env;
354 FIRM_DBG_REGISTER(cg->mod, "firm.be.TEMPLATE.cg");
358 if (isa->num_codegens > 1)
363 cur_reg_set = cg->reg_set;
365 TEMPLATE_irn_ops.cg = cg;
367 return (arch_code_generator_t *)cg;
372 /*****************************************************************
373 * ____ _ _ _____ _____
374 * | _ \ | | | | |_ _|/ ____| /\
375 * | |_) | __ _ ___| | _____ _ __ __| | | | | (___ / \
376 * | _ < / _` |/ __| |/ / _ \ '_ \ / _` | | | \___ \ / /\ \
377 * | |_) | (_| | (__| < __/ | | | (_| | _| |_ ____) / ____ \
378 * |____/ \__,_|\___|_|\_\___|_| |_|\__,_| |_____|_____/_/ \_\
380 *****************************************************************/
382 static TEMPLATE_isa_t TEMPLATE_isa_template = {
384 &TEMPLATE_general_purpose_regs[REG_R6],
385 &TEMPLATE_general_purpose_regs[REG_R7],
391 * Initializes the backend ISA and opens the output file.
393 static void *TEMPLATE_init(FILE *outfile) {
394 static int inited = 0;
400 isa = xcalloc(1, sizeof(*isa));
401 memcpy(isa, &TEMPLATE_isa_template, sizeof(*isa));
405 TEMPLATE_register_init(isa);
406 TEMPLATE_create_opcodes();
416 * Closes the output file and frees the ISA structure.
418 static void TEMPLATE_done(void *self) {
424 static int TEMPLATE_get_n_reg_class(const void *self) {
428 static const arch_register_class_t *TEMPLATE_get_reg_class(const void *self, int i) {
429 assert(i >= 0 && i < N_CLASSES && "Invalid TEMPLATE register class requested.");
430 return &TEMPLATE_reg_classes[i];
436 * Get the register class which shall be used to store a value of a given mode.
437 * @param self The this pointer.
438 * @param mode The mode in question.
439 * @return A register class which can hold values of the given mode.
441 const arch_register_class_t *TEMPLATE_get_reg_class_for_mode(const void *self, const ir_mode *mode) {
442 if (mode_is_float(mode))
443 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_floating_point];
445 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_general_purpose];
451 * Produces the type which sits between the stack args and the locals on the stack.
452 * it will contain the return address and space to store the old base pointer.
453 * @return The Firm type modelling the ABI between type.
455 static ir_type *get_between_type(void) {
456 static ir_type *between_type = NULL;
457 static entity *old_bp_ent = NULL;
460 entity *ret_addr_ent;
461 ir_type *ret_addr_type = new_type_primitive(new_id_from_str("return_addr"), mode_P);
462 ir_type *old_bp_type = new_type_primitive(new_id_from_str("bp"), mode_P);
464 between_type = new_type_class(new_id_from_str("TEMPLATE_between_type"));
465 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
466 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
468 set_entity_offset_bytes(old_bp_ent, 0);
469 set_entity_offset_bytes(ret_addr_ent, get_type_size_bytes(old_bp_type));
470 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
477 * Get the ABI restrictions for procedure calls.
478 * @param self The this pointer.
479 * @param method_type The type of the method (procedure) in question.
480 * @param abi The abi object to be modified
482 void TEMPLATE_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi) {
483 ir_type *between_type;
486 int i, n = get_method_n_params(method_type);
487 const arch_register_t *reg;
488 be_abi_call_flags_t call_flags;
490 /* set abi flags for calls */
491 call_flags.bits.left_to_right = 0;
492 call_flags.bits.store_args_sequential = 1;
493 call_flags.bits.try_omit_fp = 1;
494 call_flags.bits.fp_free = 0;
495 call_flags.bits.call_has_imm = 1;
497 /* get the between type and the frame pointer save entity */
498 between_type = get_between_type();
500 /* set stack parameter passing style */
501 be_abi_call_set_flags(abi, call_flags, between_type);
503 for (i = 0; i < n; i++) {
504 /* TODO: implement register parameter: */
505 /* reg = get reg for param i; */
506 /* be_abi_call_param_reg(abi, i, reg); */
508 /* default: all parameters on stack */
509 be_abi_call_param_stack(abi, i, 4, 0, 0);
512 /* TODO: set correct return register */
513 /* default: return value is in R0 resp. F0 */
514 if (get_method_n_ress(method_type) > 0) {
515 tp = get_method_res_type(method_type, 0);
516 mode = get_type_mode(tp);
518 be_abi_call_res_reg(abi, 0,
519 mode_is_float(mode) ? &TEMPLATE_floating_point_regs[REG_F0] : &TEMPLATE_general_purpose_regs[REG_R0]);
523 static const void *TEMPLATE_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn) {
524 return &TEMPLATE_irn_ops;
527 const arch_irn_handler_t TEMPLATE_irn_handler = {
531 const arch_irn_handler_t *TEMPLATE_get_irn_handler(const void *self) {
532 return &TEMPLATE_irn_handler;
535 int TEMPLATE_to_appear_in_schedule(void *block_env, const ir_node *irn) {
536 return is_TEMPLATE_irn(irn);
540 * Initializes the code generator interface.
542 static const arch_code_generator_if_t *TEMPLATE_get_code_generator_if(void *self) {
543 return &TEMPLATE_code_gen_if;
546 list_sched_selector_t TEMPLATE_sched_selector;
549 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
551 static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(const void *self) {
552 memcpy(&TEMPLATE_sched_selector, trivial_selector, sizeof(list_sched_selector_t));
553 TEMPLATE_sched_selector.to_appear_in_schedule = TEMPLATE_to_appear_in_schedule;
554 return &TEMPLATE_sched_selector;
558 * Returns the necessary byte alignment for storing a register of given class.
560 static int TEMPLATE_get_reg_class_alignment(const void *self, const arch_register_class_t *cls) {
561 ir_mode *mode = arch_register_class_mode(cls);
562 return get_mode_size_bytes(mode);
566 * Returns the libFirm configuration parameter for this backend.
568 static const backend_params *TEMPLATE_get_libfirm_params(void) {
569 static arch_dep_params_t ad = {
571 0, /* Muls are fast enough on Firm */
572 31, /* shift would be ok */
577 static backend_params p = {
578 NULL, /* no additional opcodes */
579 NULL, /* will be set later */
580 0, /* no dword lowering */
581 NULL, /* no creator function */
582 NULL, /* context for create_intrinsic_fkt */
589 void be_init_arch_TEMPLATE()
592 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_TEMPLATE);
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,