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"
24 #include "../begnuas.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_transform.h"
31 #include "TEMPLATE_emitter.h"
32 #include "TEMPLATE_map_regs.h"
34 /* TODO: ugly, but we need it to get access to the registers assigned to Phi nodes */
35 static set *cur_reg_set = NULL;
37 /**************************************************
40 * _ __ ___ __ _ __ _| | | ___ ___ _| |_
41 * | '__/ _ \/ _` | / _` | | |/ _ \ / __| | | _|
42 * | | | __/ (_| | | (_| | | | (_) | (__ | | |
43 * |_| \___|\__, | \__,_|_|_|\___/ \___| |_|_|
46 **************************************************/
49 * Return register requirements for a TEMPLATE node.
50 * If the node returns a tuple (mode_T) then the proj's
51 * will be asked for this information.
54 arch_register_req_t *TEMPLATE_get_irn_reg_req(const void *self,
55 const ir_node *node, int pos) {
56 long node_pos = pos == -1 ? 0 : pos;
57 ir_mode *mode = get_irn_mode(node);
59 if (mode == mode_T || mode == mode_M) {
60 return arch_no_register_req;
64 /* in case of a proj, we need to get the correct OUT slot */
65 /* of the node corresponding to the proj number */
67 node_pos = TEMPLATE_translate_proj_pos(node);
72 node = skip_Proj_const(node);
75 /* get requirements for our own nodes */
76 if (is_TEMPLATE_irn(node)) {
77 const arch_register_req_t *req;
79 req = get_TEMPLATE_in_req(node, pos);
81 req = get_TEMPLATE_out_req(node, node_pos);
89 /* unknowns should be transformed already */
90 assert(!is_Unknown(node));
92 return arch_no_register_req;
95 static void TEMPLATE_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg) {
99 pos = TEMPLATE_translate_proj_pos(irn);
100 irn = skip_Proj(irn);
103 if (is_TEMPLATE_irn(irn)) {
104 const arch_register_t **slots;
106 slots = get_TEMPLATE_slots(irn);
110 /* here we set the registers for the Phi nodes */
111 TEMPLATE_set_firm_reg(irn, reg, cur_reg_set);
115 static const arch_register_t *TEMPLATE_get_irn_reg(const void *self, const ir_node *irn) {
117 const arch_register_t *reg = NULL;
120 pos = TEMPLATE_translate_proj_pos(irn);
121 irn = skip_Proj_const(irn);
124 if (is_TEMPLATE_irn(irn)) {
125 const arch_register_t **slots;
126 slots = get_TEMPLATE_slots(irn);
130 reg = TEMPLATE_get_firm_reg(irn, cur_reg_set);
136 static arch_irn_class_t TEMPLATE_classify(const void *self, const ir_node *irn) {
137 irn = skip_Proj_const(irn);
140 return arch_irn_class_branch;
142 else if (is_TEMPLATE_irn(irn)) {
143 return arch_irn_class_normal;
149 static arch_irn_flags_t TEMPLATE_get_flags(const void *self, const ir_node *irn) {
150 irn = skip_Proj_const(irn);
152 if (is_TEMPLATE_irn(irn)) {
153 return get_TEMPLATE_flags(irn);
155 else if (is_Unknown(irn)) {
156 return arch_irn_flags_ignore;
162 static ir_entity *TEMPLATE_get_frame_entity(const void *self, const ir_node *node) {
163 /* TODO: return the ir_entity assigned to the frame */
167 static void TEMPLATE_set_frame_entity(const void *self, ir_node *node, ir_entity *ent) {
168 /* TODO: set the ir_entity assigned to the frame */
172 * This function is called by the generic backend to correct offsets for
173 * nodes accessing the stack.
175 static void TEMPLATE_set_frame_offset(const void *self, ir_node *irn, int offset) {
176 /* TODO: correct offset if irn accesses the stack */
179 static int TEMPLATE_get_sp_bias(const void *self, const ir_node *irn) {
183 /* fill register allocator interface */
185 static const arch_irn_ops_if_t TEMPLATE_irn_ops_if = {
186 TEMPLATE_get_irn_reg_req,
187 TEMPLATE_set_irn_reg,
188 TEMPLATE_get_irn_reg,
191 TEMPLATE_get_frame_entity,
192 TEMPLATE_set_frame_entity,
193 TEMPLATE_set_frame_offset,
194 TEMPLATE_get_sp_bias,
195 NULL, /* get_inverse */
196 NULL, /* get_op_estimated_cost */
197 NULL, /* possible_memory_operand */
198 NULL, /* perform_memory_operand */
201 TEMPLATE_irn_ops_t TEMPLATE_irn_ops = {
202 &TEMPLATE_irn_ops_if,
208 /**************************************************
211 * ___ ___ __| | ___ __ _ ___ _ __ _| |_
212 * / __/ _ \ / _` |/ _ \/ _` |/ _ \ '_ \ | | _|
213 * | (_| (_) | (_| | __/ (_| | __/ | | | | | |
214 * \___\___/ \__,_|\___|\__, |\___|_| |_| |_|_|
217 **************************************************/
220 * Transforms the standard firm graph into
221 * a TEMLPATE firm graph
223 static void TEMPLATE_prepare_graph(void *self) {
224 TEMPLATE_code_gen_t *cg = self;
226 irg_walk_blkwise_graph(cg->irg, NULL, TEMPLATE_transform_node, cg);
232 * Called immediatly before emit phase.
234 static void TEMPLATE_finish_irg(void *self) {
235 TEMPLATE_code_gen_t *cg = self;
236 ir_graph *irg = cg->irg;
238 dump_ir_block_graph_sched(irg, "-TEMPLATE-finished");
243 * These are some hooks which must be filled but are probably not needed.
245 static void TEMPLATE_before_sched(void *self) {
246 /* Some stuff you need to do after scheduling but before register allocation */
249 static void TEMPLATE_before_ra(void *self) {
250 /* Some stuff you need to do after scheduling but before register allocation */
253 static void TEMPLATE_after_ra(void *self) {
254 /* Some stuff you need to do immediatly after register allocation */
260 * Emits the code, closes the output file and frees
261 * the code generator interface.
263 static void TEMPLATE_emit_and_done(void *self) {
264 TEMPLATE_code_gen_t *cg = self;
265 ir_graph *irg = cg->irg;
267 TEMPLATE_gen_routine(cg, irg);
271 /* de-allocate code generator */
272 del_set(cg->reg_set);
276 static void *TEMPLATE_cg_init(be_irg_t *birg);
278 static const arch_code_generator_if_t TEMPLATE_code_gen_if = {
280 NULL, /* before abi introduce hook */
281 TEMPLATE_prepare_graph,
282 NULL, /* spill hook */
283 TEMPLATE_before_sched, /* before scheduling hook */
284 TEMPLATE_before_ra, /* before register allocation hook */
285 TEMPLATE_after_ra, /* after register allocation hook */
287 TEMPLATE_emit_and_done
291 * Initializes the code generator.
293 static void *TEMPLATE_cg_init(be_irg_t *birg) {
294 TEMPLATE_isa_t *isa = (TEMPLATE_isa_t *)birg->main_env->arch_env->isa;
295 TEMPLATE_code_gen_t *cg = xmalloc(sizeof(*cg));
297 cg->impl = &TEMPLATE_code_gen_if;
299 cg->reg_set = new_set(TEMPLATE_cmp_irn_reg_assoc, 1024);
300 cg->arch_env = birg->main_env->arch_env;
303 FIRM_DBG_REGISTER(cg->mod, "firm.be.TEMPLATE.cg");
305 cur_reg_set = cg->reg_set;
307 TEMPLATE_irn_ops.cg = cg;
309 return (arch_code_generator_t *)cg;
314 /*****************************************************************
315 * ____ _ _ _____ _____
316 * | _ \ | | | | |_ _|/ ____| /\
317 * | |_) | __ _ ___| | _____ _ __ __| | | | | (___ / \
318 * | _ < / _` |/ __| |/ / _ \ '_ \ / _` | | | \___ \ / /\ \
319 * | |_) | (_| | (__| < __/ | | | (_| | _| |_ ____) / ____ \
320 * |____/ \__,_|\___|_|\_\___|_| |_|\__,_| |_____|_____/_/ \_\
322 *****************************************************************/
324 static TEMPLATE_isa_t TEMPLATE_isa_template = {
326 &TEMPLATE_isa_if, /* isa interface implementation */
327 &TEMPLATE_general_purpose_regs[REG_SP], /* stack pointer register */
328 &TEMPLATE_general_purpose_regs[REG_BP], /* base pointer register */
329 -1, /* stack direction */
330 NULL, /* main environment */
332 { NULL, }, /* emitter environment */
336 * Initializes the backend ISA and opens the output file.
338 static void *TEMPLATE_init(FILE *outfile) {
339 static int run_once = 0;
346 isa = xcalloc(1, sizeof(*isa));
347 memcpy(isa, &TEMPLATE_isa_template, sizeof(*isa));
349 be_emit_init_env(&isa->emit, outfile);
351 TEMPLATE_register_init(isa);
352 TEMPLATE_create_opcodes();
360 * Closes the output file and frees the ISA structure.
362 static void TEMPLATE_done(void *self) {
363 TEMPLATE_isa_t *isa = self;
365 /* emit now all global declarations */
366 be_gas_emit_decls(&isa->emit, isa->arch_isa.main_env, 0);
368 be_emit_destroy_env(&isa->emit);
374 static int TEMPLATE_get_n_reg_class(const void *self) {
378 static const arch_register_class_t *TEMPLATE_get_reg_class(const void *self, int i) {
379 assert(i >= 0 && i < N_CLASSES && "Invalid TEMPLATE register class requested.");
380 return &TEMPLATE_reg_classes[i];
386 * Get the register class which shall be used to store a value of a given mode.
387 * @param self The this pointer.
388 * @param mode The mode in question.
389 * @return A register class which can hold values of the given mode.
391 const arch_register_class_t *TEMPLATE_get_reg_class_for_mode(const void *self, const ir_mode *mode) {
392 if (mode_is_float(mode))
393 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_floating_point];
395 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_general_purpose];
401 be_abi_call_flags_bits_t flags;
402 const arch_env_t *arch_env;
403 const arch_isa_t *isa;
405 } TEMPLATE_abi_env_t;
407 static void *TEMPLATE_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
409 TEMPLATE_abi_env_t *env = xmalloc(sizeof(env[0]));
410 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
411 env->flags = fl.bits;
413 env->arch_env = arch_env;
414 env->isa = arch_env->isa;
419 * Get the between type for that call.
420 * @param self The callback object.
421 * @return The between type of for that call.
423 static ir_type *TEMPLATE_get_between_type(void *self) {
424 //TEMPLATE_abi_env_t *env = self;
425 static ir_type *between_type = NULL;
426 static ir_entity *old_bp_ent = NULL;
429 ir_entity *ret_addr_ent;
430 ir_type *ret_addr_type = new_type_primitive(new_id_from_str("return_addr"), mode_P);
431 ir_type *old_bp_type = new_type_primitive(new_id_from_str("bp"), mode_P);
433 between_type = new_type_class(new_id_from_str("TEMPLATE_between_type"));
434 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
435 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
437 set_entity_offset(old_bp_ent, 0);
438 set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
439 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
445 static void TEMPLATE_abi_dont_save_regs(void *self, pset *s)
447 TEMPLATE_abi_env_t *env = self;
448 if (env->flags.try_omit_fp) {
449 /* insert the BP register into the ignore set */
450 pset_insert_ptr(s, env->isa->bp);
455 * Build the prolog, return the BASE POINTER register
457 static const arch_register_t *TEMPLATE_abi_prologue(void *self, ir_node **mem, pmap *reg_map) {
458 TEMPLATE_abi_env_t *env = self;
460 if(env->flags.try_omit_fp)
465 /* Build the epilog */
466 static void TEMPLATE_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_map) {
467 //TEMPLATE_abi_env_t *env = self;
470 static const be_abi_callbacks_t TEMPLATE_abi_callbacks = {
473 TEMPLATE_get_between_type,
474 TEMPLATE_abi_dont_save_regs,
475 TEMPLATE_abi_prologue,
476 TEMPLATE_abi_epilogue,
480 * Get the ABI restrictions for procedure calls.
481 * @param self The this pointer.
482 * @param method_type The type of the method (procedure) in question.
483 * @param abi The abi object to be modified
485 void TEMPLATE_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi) {
488 int i, n = get_method_n_params(method_type);
489 be_abi_call_flags_t call_flags;
491 /* set abi flags for calls */
492 call_flags.bits.left_to_right = 0;
493 call_flags.bits.store_args_sequential = 1;
494 call_flags.bits.try_omit_fp = 1;
495 call_flags.bits.fp_free = 0;
496 call_flags.bits.call_has_imm = 1;
498 /* set stack parameter passing style */
499 be_abi_call_set_flags(abi, call_flags, &TEMPLATE_abi_callbacks);
501 for (i = 0; i < n; i++) {
502 /* TODO: implement register parameter: */
503 /* reg = get reg for param i; */
504 /* be_abi_call_param_reg(abi, i, reg); */
506 /* default: all parameters on stack */
507 be_abi_call_param_stack(abi, i, 4, 0, 0);
510 /* TODO: set correct return register */
511 /* default: return value is in R0 resp. F0 */
512 if (get_method_n_ress(method_type) > 0) {
513 tp = get_method_res_type(method_type, 0);
514 mode = get_type_mode(tp);
516 be_abi_call_res_reg(abi, 0,
517 mode_is_float(mode) ? &TEMPLATE_floating_point_regs[REG_F0] : &TEMPLATE_general_purpose_regs[REG_R0]);
521 static const void *TEMPLATE_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn) {
522 return &TEMPLATE_irn_ops;
525 const arch_irn_handler_t TEMPLATE_irn_handler = {
529 const arch_irn_handler_t *TEMPLATE_get_irn_handler(const void *self) {
530 return &TEMPLATE_irn_handler;
533 int TEMPLATE_to_appear_in_schedule(void *block_env, const ir_node *irn) {
534 return is_TEMPLATE_irn(irn);
538 * Initializes the code generator interface.
540 static const arch_code_generator_if_t *TEMPLATE_get_code_generator_if(void *self) {
541 return &TEMPLATE_code_gen_if;
544 list_sched_selector_t TEMPLATE_sched_selector;
547 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
549 static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(const void *self, list_sched_selector_t *selector) {
550 memcpy(&TEMPLATE_sched_selector, trivial_selector, sizeof(list_sched_selector_t));
551 TEMPLATE_sched_selector.to_appear_in_schedule = TEMPLATE_to_appear_in_schedule;
552 return &TEMPLATE_sched_selector;
555 static const ilp_sched_selector_t *TEMPLATE_get_ilp_sched_selector(const void *self) {
560 * Returns the necessary byte alignment for storing a register of given class.
562 static int TEMPLATE_get_reg_class_alignment(const void *self, const arch_register_class_t *cls) {
563 ir_mode *mode = arch_register_class_mode(cls);
564 return get_mode_size_bytes(mode);
568 * Returns the libFirm configuration parameter for this backend.
570 static const backend_params *TEMPLATE_get_libfirm_params(void) {
571 static arch_dep_params_t ad = {
573 0, /* Muls are fast enough on Firm */
574 31, /* shift would be ok */
579 static backend_params p = {
580 NULL, /* no additional opcodes */
581 NULL, /* will be set later */
582 0, /* no dword lowering */
583 NULL, /* no creator function */
584 NULL, /* context for create_intrinsic_fkt */
591 static const be_execution_unit_t ***TEMPLATE_get_allowed_execution_units(const void *self, const ir_node *irn) {
597 static const be_machine_t *TEMPLATE_get_machine(const void *self) {
604 const arch_isa_if_t TEMPLATE_isa_if = {
607 TEMPLATE_get_n_reg_class,
608 TEMPLATE_get_reg_class,
609 TEMPLATE_get_reg_class_for_mode,
610 TEMPLATE_get_call_abi,
611 TEMPLATE_get_irn_handler,
612 TEMPLATE_get_code_generator_if,
613 TEMPLATE_get_list_sched_selector,
614 TEMPLATE_get_ilp_sched_selector,
615 TEMPLATE_get_reg_class_alignment,
616 TEMPLATE_get_libfirm_params,
617 TEMPLATE_get_allowed_execution_units,
621 void be_init_arch_TEMPLATE(void)
623 be_register_isa_if("TEMPLATE", &TEMPLATE_isa_if);
626 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_TEMPLATE);