2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief The main TEMPLATE backend driver file.
27 #include "pseudo_irg.h"
38 #include "../bearch.h"
39 #include "../benode_t.h"
40 #include "../belower.h"
41 #include "../besched.h"
43 #include "../bemodule.h"
44 #include "../begnuas.h"
45 #include "../belistsched.h"
47 #include "bearch_TEMPLATE_t.h"
49 #include "TEMPLATE_new_nodes.h"
50 #include "gen_TEMPLATE_regalloc_if.h"
51 #include "TEMPLATE_transform.h"
52 #include "TEMPLATE_emitter.h"
53 #include "TEMPLATE_map_regs.h"
55 /* TODO: ugly, but we need it to get access to the registers assigned to Phi nodes */
56 static set *cur_reg_set = NULL;
58 /**************************************************
61 * _ __ ___ __ _ __ _| | | ___ ___ _| |_
62 * | '__/ _ \/ _` | / _` | | |/ _ \ / __| | | _|
63 * | | | __/ (_| | | (_| | | | (_) | (__ | | |
64 * |_| \___|\__, | \__,_|_|_|\___/ \___| |_|_|
67 **************************************************/
69 static arch_irn_class_t TEMPLATE_classify(const ir_node *irn)
75 static ir_entity *TEMPLATE_get_frame_entity(const ir_node *node)
78 /* TODO: return the ir_entity assigned to the frame */
82 static void TEMPLATE_set_frame_entity(ir_node *node, ir_entity *ent)
86 /* TODO: set the ir_entity assigned to the frame */
90 * This function is called by the generic backend to correct offsets for
91 * nodes accessing the stack.
93 static void TEMPLATE_set_frame_offset(ir_node *irn, int offset)
97 /* TODO: correct offset if irn accesses the stack */
100 static int TEMPLATE_get_sp_bias(const ir_node *irn)
106 /* fill register allocator interface */
108 static const arch_irn_ops_t TEMPLATE_irn_ops = {
110 get_TEMPLATE_out_req,
112 TEMPLATE_get_frame_entity,
113 TEMPLATE_set_frame_entity,
114 TEMPLATE_set_frame_offset,
115 TEMPLATE_get_sp_bias,
116 NULL, /* get_inverse */
117 NULL, /* get_op_estimated_cost */
118 NULL, /* possible_memory_operand */
119 NULL, /* perform_memory_operand */
122 /**************************************************
125 * ___ ___ __| | ___ __ _ ___ _ __ _| |_
126 * / __/ _ \ / _` |/ _ \/ _` |/ _ \ '_ \ | | _|
127 * | (_| (_) | (_| | __/ (_| | __/ | | | | | |
128 * \___\___/ \__,_|\___|\__, |\___|_| |_| |_|_|
131 **************************************************/
134 * Transforms the standard firm graph into
135 * a TEMLPATE firm graph
137 static void TEMPLATE_prepare_graph(void *self) {
138 TEMPLATE_code_gen_t *cg = self;
140 irg_walk_blkwise_graph(cg->irg, NULL, TEMPLATE_transform_node, cg);
146 * Called immediatly before emit phase.
148 static void TEMPLATE_finish_irg(void *self) {
149 TEMPLATE_code_gen_t *cg = self;
150 ir_graph *irg = cg->irg;
152 dump_ir_block_graph_sched(irg, "-TEMPLATE-finished");
156 static void TEMPLATE_before_ra(void *self) {
158 /* Some stuff you need to do after scheduling but before register allocation */
161 static void TEMPLATE_after_ra(void *self) {
163 /* Some stuff you need to do immediatly after register allocation */
169 * Emits the code, closes the output file and frees
170 * the code generator interface.
172 static void TEMPLATE_emit_and_done(void *self) {
173 TEMPLATE_code_gen_t *cg = self;
174 ir_graph *irg = cg->irg;
176 TEMPLATE_gen_routine(cg, irg);
180 /* de-allocate code generator */
181 del_set(cg->reg_set);
185 static void *TEMPLATE_cg_init(be_irg_t *birg);
187 static const arch_code_generator_if_t TEMPLATE_code_gen_if = {
189 NULL, /* get_pic_base hook */
190 NULL, /* before abi introduce hook */
191 TEMPLATE_prepare_graph,
192 NULL, /* spill hook */
193 TEMPLATE_before_ra, /* before register allocation hook */
194 TEMPLATE_after_ra, /* after register allocation hook */
196 TEMPLATE_emit_and_done
200 * Initializes the code generator.
202 static void *TEMPLATE_cg_init(be_irg_t *birg) {
203 const arch_env_t *arch_env = be_get_birg_arch_env(birg);
204 TEMPLATE_isa_t *isa = (TEMPLATE_isa_t *) arch_env;
205 TEMPLATE_code_gen_t *cg = XMALLOC(TEMPLATE_code_gen_t);
207 cg->impl = &TEMPLATE_code_gen_if;
208 cg->irg = be_get_birg_irg(birg);
209 cg->reg_set = new_set(TEMPLATE_cmp_irn_reg_assoc, 1024);
212 FIRM_DBG_REGISTER(cg->mod, "firm.be.TEMPLATE.cg");
214 cur_reg_set = cg->reg_set;
216 return (arch_code_generator_t *)cg;
221 /*****************************************************************
222 * ____ _ _ _____ _____
223 * | _ \ | | | | |_ _|/ ____| /\
224 * | |_) | __ _ ___| | _____ _ __ __| | | | | (___ / \
225 * | _ < / _` |/ __| |/ / _ \ '_ \ / _` | | | \___ \ / /\ \
226 * | |_) | (_| | (__| < __/ | | | (_| | _| |_ ____) / ____ \
227 * |____/ \__,_|\___|_|\_\___|_| |_|\__,_| |_____|_____/_/ \_\
229 *****************************************************************/
231 static TEMPLATE_isa_t TEMPLATE_isa_template = {
233 &TEMPLATE_isa_if, /* isa interface implementation */
234 &TEMPLATE_general_purpose_regs[REG_SP], /* stack pointer register */
235 &TEMPLATE_general_purpose_regs[REG_BP], /* base pointer register */
236 &TEMPLATE_reg_classes[CLASS_TEMPLATE_general_purpose], /* link pointer register class */
237 -1, /* stack direction */
238 2, /* power of two stack alignment for calls, 2^2 == 4 */
239 NULL, /* main environment */
240 7, /* costs for a spill instruction */
241 5, /* costs for a reload instruction */
246 * Initializes the backend ISA and opens the output file.
248 static arch_env_t *TEMPLATE_init(FILE *outfile) {
249 static int run_once = 0;
256 isa = XMALLOC(TEMPLATE_isa_t);
257 memcpy(isa, &TEMPLATE_isa_template, sizeof(*isa));
259 be_emit_init(outfile);
261 TEMPLATE_register_init();
262 TEMPLATE_create_opcodes(&TEMPLATE_irn_ops);
264 return &isa->arch_env;
270 * Closes the output file and frees the ISA structure.
272 static void TEMPLATE_done(void *self) {
273 TEMPLATE_isa_t *isa = self;
275 /* emit now all global declarations */
276 be_gas_emit_decls(isa->arch_env.main_env, 0);
284 static unsigned TEMPLATE_get_n_reg_class(const void *self)
290 static const arch_register_class_t *TEMPLATE_get_reg_class(const void *self,
294 assert(i < N_CLASSES);
295 return &TEMPLATE_reg_classes[i];
301 * Get the register class which shall be used to store a value of a given mode.
302 * @param self The this pointer.
303 * @param mode The mode in question.
304 * @return A register class which can hold values of the given mode.
306 const arch_register_class_t *TEMPLATE_get_reg_class_for_mode(const void *self,
310 if (mode_is_float(mode))
311 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_floating_point];
313 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_general_purpose];
319 be_abi_call_flags_bits_t flags;
320 const arch_env_t *arch_env;
322 } TEMPLATE_abi_env_t;
324 static void *TEMPLATE_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
326 TEMPLATE_abi_env_t *env = XMALLOC(TEMPLATE_abi_env_t);
327 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
328 env->flags = fl.bits;
330 env->arch_env = arch_env;
335 * Get the between type for that call.
336 * @param self The callback object.
337 * @return The between type of for that call.
339 static ir_type *TEMPLATE_get_between_type(void *self)
341 static ir_type *between_type = NULL;
342 static ir_entity *old_bp_ent = NULL;
346 ir_entity *ret_addr_ent;
347 ir_type *ret_addr_type = new_type_primitive(new_id_from_str("return_addr"), mode_P);
348 ir_type *old_bp_type = new_type_primitive(new_id_from_str("bp"), mode_P);
350 between_type = new_type_class(new_id_from_str("TEMPLATE_between_type"));
351 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
352 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
354 set_entity_offset(old_bp_ent, 0);
355 set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
356 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
363 * Build the prolog, return the BASE POINTER register
365 static const arch_register_t *TEMPLATE_abi_prologue(void *self, ir_node **mem,
366 pmap *reg_map, int *stack_bias)
368 TEMPLATE_abi_env_t *env = self;
373 if(env->flags.try_omit_fp)
374 return env->arch_env->sp;
375 return env->arch_env->bp;
378 /* Build the epilog */
379 static void TEMPLATE_abi_epilogue(void *self, ir_node *bl, ir_node **mem,
388 static const be_abi_callbacks_t TEMPLATE_abi_callbacks = {
391 TEMPLATE_get_between_type,
392 TEMPLATE_abi_prologue,
393 TEMPLATE_abi_epilogue,
397 * Get the ABI restrictions for procedure calls.
398 * @param self The this pointer.
399 * @param method_type The type of the method (procedure) in question.
400 * @param abi The abi object to be modified
402 void TEMPLATE_get_call_abi(const void *self, ir_type *method_type,
407 int i, n = get_method_n_params(method_type);
408 be_abi_call_flags_t call_flags;
411 /* set abi flags for calls */
412 call_flags.bits.left_to_right = 0;
413 call_flags.bits.store_args_sequential = 1;
414 call_flags.bits.try_omit_fp = 1;
415 call_flags.bits.fp_free = 0;
416 call_flags.bits.call_has_imm = 1;
418 /* set stack parameter passing style */
419 be_abi_call_set_flags(abi, call_flags, &TEMPLATE_abi_callbacks);
421 for (i = 0; i < n; i++) {
422 /* TODO: implement register parameter: */
423 /* reg = get reg for param i; */
424 /* be_abi_call_param_reg(abi, i, reg); */
426 /* default: all parameters on stack */
427 tp = get_method_param_type(method_type, i);
428 mode = get_type_mode(tp);
429 be_abi_call_param_stack(abi, i, mode, 4, 0, 0);
432 /* TODO: set correct return register */
433 /* default: return value is in R0 resp. F0 */
434 if (get_method_n_ress(method_type) > 0) {
435 tp = get_method_res_type(method_type, 0);
436 mode = get_type_mode(tp);
438 be_abi_call_res_reg(abi, 0,
439 mode_is_float(mode) ? &TEMPLATE_floating_point_regs[REG_F0] : &TEMPLATE_general_purpose_regs[REG_R0]);
443 int TEMPLATE_to_appear_in_schedule(void *block_env, const ir_node *irn)
447 if(!is_TEMPLATE_irn(irn))
454 * Initializes the code generator interface.
456 static const arch_code_generator_if_t *TEMPLATE_get_code_generator_if(
460 return &TEMPLATE_code_gen_if;
463 list_sched_selector_t TEMPLATE_sched_selector;
466 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
468 static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(
469 const void *self, list_sched_selector_t *selector)
474 TEMPLATE_sched_selector = trivial_selector;
475 TEMPLATE_sched_selector.to_appear_in_schedule = TEMPLATE_to_appear_in_schedule;
476 return &TEMPLATE_sched_selector;
479 static const ilp_sched_selector_t *TEMPLATE_get_ilp_sched_selector(
487 * Returns the necessary byte alignment for storing a register of given class.
489 static int TEMPLATE_get_reg_class_alignment(const void *self,
490 const arch_register_class_t *cls) {
491 ir_mode *mode = arch_register_class_mode(cls);
493 return get_mode_size_bytes(mode);
497 * Returns the libFirm configuration parameter for this backend.
499 static const backend_params *TEMPLATE_get_backend_params(void) {
500 static backend_params p = {
501 0, /* no dword lowering */
502 0, /* no inline assembly */
503 NULL, /* will be set later */
504 NULL, /* no creator function */
505 NULL, /* context for create_intrinsic_fkt */
506 NULL, /* parameter for if conversion */
507 NULL, /* float arithmetic mode */
508 0, /* no trampoline support: size 0 */
509 0, /* no trampoline support: align 0 */
510 NULL, /* no trampoline support: no trampoline builder */
511 4 /* alignment of stack parameter: typically 4 (32bit) or 8 (64bit) */
516 static const be_execution_unit_t ***TEMPLATE_get_allowed_execution_units(
517 const void *self, const ir_node *irn)
526 static const be_machine_t *TEMPLATE_get_machine(const void *self)
534 static ir_graph **TEMPLATE_get_backend_irg_list(const void *self,
542 static asm_constraint_flags_t TEMPLATE_parse_asm_constraint(const void *self,
547 return ASM_CONSTRAINT_FLAG_INVALID;
550 static int TEMPLATE_is_valid_clobber(const void *self, const char *clobber)
557 const arch_isa_if_t TEMPLATE_isa_if = {
560 NULL, /* handle intrinsics */
561 TEMPLATE_get_n_reg_class,
562 TEMPLATE_get_reg_class,
563 TEMPLATE_get_reg_class_for_mode,
564 TEMPLATE_get_call_abi,
565 TEMPLATE_get_code_generator_if,
566 TEMPLATE_get_list_sched_selector,
567 TEMPLATE_get_ilp_sched_selector,
568 TEMPLATE_get_reg_class_alignment,
569 TEMPLATE_get_backend_params,
570 TEMPLATE_get_allowed_execution_units,
571 TEMPLATE_get_machine,
572 TEMPLATE_get_backend_irg_list,
573 NULL, /* mark remat */
574 TEMPLATE_parse_asm_constraint,
575 TEMPLATE_is_valid_clobber
578 void be_init_arch_TEMPLATE(void)
580 be_register_isa_if("TEMPLATE", &TEMPLATE_isa_if);
583 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_TEMPLATE);