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 amd64 backend driver file.
23 * @version $Id: bearch_amd64.c 26909 2010-01-05 15:56:54Z matze $
27 #include "pseudo_irg.h"
39 #include "../bearch.h"
40 #include "../benode.h"
41 #include "../belower.h"
42 #include "../besched.h"
44 #include "../bemodule.h"
45 #include "../begnuas.h"
46 #include "../belistsched.h"
47 #include "../beflags.h"
49 #include "bearch_amd64_t.h"
51 #include "amd64_new_nodes.h"
52 #include "gen_amd64_regalloc_if.h"
53 #include "amd64_transform.h"
54 #include "amd64_emitter.h"
56 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
58 static arch_irn_class_t amd64_classify(const ir_node *irn)
64 static ir_entity *amd64_get_frame_entity(const ir_node *node)
67 /* TODO: return the ir_entity assigned to the frame */
71 static void amd64_set_frame_entity(ir_node *node, ir_entity *ent)
75 /* TODO: set the ir_entity assigned to the frame */
79 * This function is called by the generic backend to correct offsets for
80 * nodes accessing the stack.
82 static void amd64_set_frame_offset(ir_node *irn, int offset)
86 /* TODO: correct offset if irn accesses the stack */
89 static int amd64_get_sp_bias(const ir_node *irn)
95 /* fill register allocator interface */
97 static const arch_irn_ops_t amd64_irn_ops = {
100 amd64_get_frame_entity,
101 amd64_set_frame_entity,
102 amd64_set_frame_offset,
104 NULL, /* get_inverse */
105 NULL, /* get_op_estimated_cost */
106 NULL, /* possible_memory_operand */
107 NULL, /* perform_memory_operand */
113 * Transforms the standard firm graph into
116 static void amd64_prepare_graph(void *self)
118 amd64_code_gen_t *cg = self;
120 amd64_transform_graph (cg);
123 dump_ir_graph(cg->irg, "transformed");
129 * Called immediatly before emit phase.
131 static void amd64_finish_irg(void *self)
133 amd64_code_gen_t *cg = self;
134 ir_graph *irg = cg->irg;
136 dump_ir_graph(irg, "amd64-finished");
139 static void amd64_before_ra(void *self)
141 amd64_code_gen_t *cg = self;
143 be_sched_fix_flags(cg->birg, &amd64_reg_classes[CLASS_amd64_flags], 0);
146 static void amd64_after_ra(void *self)
149 /* Some stuff you need to do immediatly after register allocation */
155 * Emits the code, closes the output file and frees
156 * the code generator interface.
158 static void amd64_emit_and_done(void *self)
160 amd64_code_gen_t *cg = self;
161 ir_graph *irg = cg->irg;
163 amd64_gen_routine(cg, irg);
165 /* de-allocate code generator */
169 static void *amd64_cg_init(be_irg_t *birg);
171 static const arch_code_generator_if_t amd64_code_gen_if = {
173 NULL, /* get_pic_base hook */
174 NULL, /* before abi introduce hook */
176 NULL, /* spill hook */
177 amd64_before_ra, /* before register allocation hook */
178 amd64_after_ra, /* after register allocation hook */
184 * Initializes the code generator.
186 static void *amd64_cg_init(be_irg_t *birg)
188 const arch_env_t *arch_env = be_get_birg_arch_env(birg);
189 amd64_isa_t *isa = (amd64_isa_t *) arch_env;
190 amd64_code_gen_t *cg = XMALLOC(amd64_code_gen_t);
192 cg->impl = &amd64_code_gen_if;
193 cg->irg = be_get_birg_irg(birg);
196 cg->dump = (birg->main_env->options->dump_flags & DUMP_BE) ? 1 : 0;
198 return (arch_code_generator_t *)cg;
202 typedef ir_node *(*create_const_node_func) (dbg_info *dbg, ir_node *block);
205 * Used to create per-graph unique pseudo nodes.
207 static inline ir_node *create_const(amd64_code_gen_t *cg, ir_node **place,
208 create_const_node_func func,
209 const arch_register_t* reg)
211 ir_node *block, *res;
216 block = get_irg_start_block(cg->irg);
217 res = func(NULL, block);
218 arch_set_irn_register(res, reg);
224 const arch_isa_if_t amd64_isa_if;
225 static amd64_isa_t amd64_isa_template = {
227 &amd64_isa_if, /* isa interface implementation */
228 &amd64_gp_regs[REG_RSP], /* stack pointer register */
229 &amd64_gp_regs[REG_RBP], /* base pointer register */
230 &amd64_reg_classes[CLASS_amd64_gp], /* link pointer register class */
231 -1, /* stack direction */
232 2, /* power of two stack alignment for calls, 2^2 == 4 */
233 NULL, /* main environment */
234 7, /* costs for a spill instruction */
235 5, /* costs for a reload instruction */
240 * Initializes the backend ISA
242 static arch_env_t *amd64_init(FILE *outfile)
244 static int run_once = 0;
251 isa = XMALLOC(amd64_isa_t);
252 memcpy(isa, &amd64_isa_template, sizeof(*isa));
254 be_emit_init(outfile);
256 amd64_register_init();
257 amd64_create_opcodes(&amd64_irn_ops);
259 return &isa->arch_env;
265 * Closes the output file and frees the ISA structure.
267 static void amd64_done(void *self)
269 amd64_isa_t *isa = self;
271 /* emit now all global declarations */
272 be_gas_emit_decls(isa->arch_env.main_env);
279 static unsigned amd64_get_n_reg_class(void)
284 static const arch_register_class_t *amd64_get_reg_class(unsigned i)
286 assert(i < N_CLASSES);
287 return &amd64_reg_classes[i];
293 * Get the register class which shall be used to store a value of a given mode.
294 * @param self The this pointer.
295 * @param mode The mode in question.
296 * @return A register class which can hold values of the given mode.
298 static const arch_register_class_t *amd64_get_reg_class_for_mode(const ir_mode *mode)
300 assert(!mode_is_float(mode));
301 return &amd64_reg_classes[CLASS_amd64_gp];
307 be_abi_call_flags_bits_t flags;
308 const arch_env_t *arch_env;
312 static void *amd64_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
314 amd64_abi_env_t *env = XMALLOC(amd64_abi_env_t);
315 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
316 env->flags = fl.bits;
318 env->arch_env = arch_env;
323 * Get the between type for that call.
324 * @param self The callback object.
325 * @return The between type of for that call.
327 static ir_type *amd64_get_between_type(void *self)
329 static ir_type *between_type = NULL;
330 static ir_entity *old_bp_ent = NULL;
334 ir_entity *ret_addr_ent;
335 ir_type *ret_addr_type = new_type_primitive(mode_P);
336 ir_type *old_bp_type = new_type_primitive(mode_P);
338 between_type = new_type_class(new_id_from_str("amd64_between_type"));
339 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
340 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
342 set_entity_offset(old_bp_ent, 0);
343 set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
344 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
351 * Build the prolog, return the BASE POINTER register
353 static const arch_register_t *amd64_abi_prologue(void *self, ir_node **mem,
354 pmap *reg_map, int *stack_bias)
356 amd64_abi_env_t *env = self;
357 const arch_env_t *aenv = env->arch_env;
363 if (!env->flags.try_omit_fp) {
364 /* FIXME: maybe later here should be some code to generate
365 * the usual abi prologue */
366 return env->arch_env->bp;
369 return env->arch_env->sp;
372 /* Build the epilog */
373 static void amd64_abi_epilogue(void *self, ir_node *bl, ir_node **mem,
376 amd64_abi_env_t *env = self;
377 const arch_env_t *aenv = env->arch_env;
378 ir_node *curr_sp = be_abi_reg_map_get(reg_map, aenv->sp);
379 ir_node *curr_bp = be_abi_reg_map_get(reg_map, aenv->bp);
383 if (env->flags.try_omit_fp) {
384 curr_sp = be_new_IncSP(aenv->sp, bl, curr_sp, BE_STACK_FRAME_SIZE_SHRINK, 0);
387 be_abi_reg_map_set(reg_map, aenv->sp, curr_sp);
388 be_abi_reg_map_set(reg_map, aenv->bp, curr_bp);
391 static const be_abi_callbacks_t amd64_abi_callbacks = {
394 amd64_get_between_type,
400 * Get the ABI restrictions for procedure calls.
401 * @param self The this pointer.
402 * @param method_type The type of the method (procedure) in question.
403 * @param abi The abi object to be modified
405 static void amd64_get_call_abi(const void *self, ir_type *method_type,
410 int i, n = get_method_n_params(method_type);
411 be_abi_call_flags_t call_flags;
416 /* set abi flags for calls */
417 call_flags.bits.left_to_right = 0;
418 call_flags.bits.store_args_sequential = 1;
419 call_flags.bits.try_omit_fp = 1;
420 call_flags.bits.fp_free = 0;
421 call_flags.bits.call_has_imm = 1;
423 /* set stack parameter passing style */
424 be_abi_call_set_flags(abi, call_flags, &amd64_abi_callbacks);
426 for (i = 0; i < n; i++) {
427 tp = get_method_param_type(method_type, i);
428 mode = get_type_mode(tp);
429 //d// printf ("MODE %p %p XX %d\n", mode, mode_Iu, i);
431 if (!no_reg && (i == 0 || i == 1) && mode == mode_Iu) {
432 //d// printf("TEST%d\n", i);
433 be_abi_call_param_reg(abi, i,
434 i == 0 ? &amd64_gp_regs[REG_RDI]
435 : &amd64_gp_regs[REG_RSI],
437 /* default: all parameters on stack */
440 be_abi_call_param_stack(abi, i, mode, 4, 0, 0, ABI_CONTEXT_BOTH);
444 /* TODO: set correct return register */
445 /* default: return value is in R0 resp. F0 */
446 if (get_method_n_ress(method_type) > 0) {
447 tp = get_method_res_type(method_type, 0);
448 mode = get_type_mode(tp);
450 /* FIXME: No floating point yet */
451 /* be_abi_call_res_reg(abi, 0,
452 mode_is_float(mode) ? &amd64_fp_regs[REG_F0] : &amd64_gp_regs[REG_R0], ABI_CONTEXT_BOTH) */;
454 be_abi_call_res_reg(abi, 0,
455 &amd64_gp_regs[REG_RAX], ABI_CONTEXT_BOTH);
459 static int amd64_to_appear_in_schedule(void *block_env, const ir_node *irn)
463 if(!is_amd64_irn(irn))
470 * Initializes the code generator interface.
472 static const arch_code_generator_if_t *amd64_get_code_generator_if(
476 return &amd64_code_gen_if;
479 list_sched_selector_t amd64_sched_selector;
482 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
484 static const list_sched_selector_t *amd64_get_list_sched_selector(
485 const void *self, list_sched_selector_t *selector)
490 amd64_sched_selector = trivial_selector;
491 amd64_sched_selector.to_appear_in_schedule = amd64_to_appear_in_schedule;
492 return &amd64_sched_selector;
495 static const ilp_sched_selector_t *amd64_get_ilp_sched_selector(
503 * Returns the necessary byte alignment for storing a register of given class.
505 static int amd64_get_reg_class_alignment(const arch_register_class_t *cls)
507 ir_mode *mode = arch_register_class_mode(cls);
508 return get_mode_size_bytes(mode);
512 * Returns the libFirm configuration parameter for this backend.
514 static const backend_params *amd64_get_backend_params(void) {
515 static backend_params p = {
516 0, /* no dword lowering */
517 0, /* no inline assembly */
518 NULL, /* will be set later */
519 NULL, /* no creator function */
520 NULL, /* context for create_intrinsic_fkt */
521 NULL, /* parameter for if conversion */
522 NULL, /* float arithmetic mode */
523 0, /* no trampoline support: size 0 */
524 0, /* no trampoline support: align 0 */
525 NULL, /* no trampoline support: no trampoline builder */
526 4 /* alignment of stack parameter: typically 4 (32bit) or 8 (64bit) */
531 static const be_execution_unit_t ***amd64_get_allowed_execution_units(
540 static const be_machine_t *amd64_get_machine(const void *self)
548 static ir_graph **amd64_get_backend_irg_list(const void *self,
556 static asm_constraint_flags_t amd64_parse_asm_constraint(const char **c)
559 return ASM_CONSTRAINT_FLAG_INVALID;
562 static int amd64_is_valid_clobber(const char *clobber)
568 const arch_isa_if_t amd64_isa_if = {
571 NULL, /* handle intrinsics */
572 amd64_get_n_reg_class,
574 amd64_get_reg_class_for_mode,
576 amd64_get_code_generator_if,
577 amd64_get_list_sched_selector,
578 amd64_get_ilp_sched_selector,
579 amd64_get_reg_class_alignment,
580 amd64_get_backend_params,
581 amd64_get_allowed_execution_units,
583 amd64_get_backend_irg_list,
584 NULL, /* mark remat */
585 amd64_parse_asm_constraint,
586 amd64_is_valid_clobber
589 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_amd64);
590 void be_init_arch_amd64(void)
592 be_register_isa_if("amd64", &amd64_isa_if);
593 FIRM_DBG_REGISTER(dbg, "firm.be.amd64.cg");
594 amd64_init_transform();