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"
48 #include "bearch_amd64_t.h"
50 #include "amd64_new_nodes.h"
51 #include "gen_amd64_regalloc_if.h"
52 #include "amd64_transform.h"
53 #include "amd64_emitter.h"
55 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
57 static arch_irn_class_t amd64_classify(const ir_node *irn)
63 static ir_entity *amd64_get_frame_entity(const ir_node *node)
66 /* TODO: return the ir_entity assigned to the frame */
70 static void amd64_set_frame_entity(ir_node *node, ir_entity *ent)
74 /* TODO: set the ir_entity assigned to the frame */
78 * This function is called by the generic backend to correct offsets for
79 * nodes accessing the stack.
81 static void amd64_set_frame_offset(ir_node *irn, int offset)
85 /* TODO: correct offset if irn accesses the stack */
88 static int amd64_get_sp_bias(const ir_node *irn)
94 /* fill register allocator interface */
96 static const arch_irn_ops_t amd64_irn_ops = {
99 amd64_get_frame_entity,
100 amd64_set_frame_entity,
101 amd64_set_frame_offset,
103 NULL, /* get_inverse */
104 NULL, /* get_op_estimated_cost */
105 NULL, /* possible_memory_operand */
106 NULL, /* perform_memory_operand */
112 * Transforms the standard firm graph into
115 static void amd64_prepare_graph(void *self)
117 amd64_code_gen_t *cg = self;
119 amd64_transform_graph (cg);
122 dump_ir_graph(cg->irg, "transformed");
128 * Called immediatly before emit phase.
130 static void amd64_finish_irg(void *self)
132 amd64_code_gen_t *cg = self;
133 ir_graph *irg = cg->irg;
135 dump_ir_graph(irg, "amd64-finished");
139 static void amd64_before_ra(void *self)
142 /* Some stuff you need to do after scheduling but before register allocation */
145 static void amd64_after_ra(void *self)
148 /* Some stuff you need to do immediatly after register allocation */
154 * Emits the code, closes the output file and frees
155 * the code generator interface.
157 static void amd64_emit_and_done(void *self)
159 amd64_code_gen_t *cg = self;
160 ir_graph *irg = cg->irg;
162 amd64_gen_routine(cg, irg);
164 /* de-allocate code generator */
168 static void *amd64_cg_init(be_irg_t *birg);
170 static const arch_code_generator_if_t amd64_code_gen_if = {
172 NULL, /* get_pic_base hook */
173 NULL, /* before abi introduce hook */
175 NULL, /* spill hook */
176 amd64_before_ra, /* before register allocation hook */
177 amd64_after_ra, /* after register allocation hook */
183 * Initializes the code generator.
185 static void *amd64_cg_init(be_irg_t *birg)
187 const arch_env_t *arch_env = be_get_birg_arch_env(birg);
188 amd64_isa_t *isa = (amd64_isa_t *) arch_env;
189 amd64_code_gen_t *cg = XMALLOC(amd64_code_gen_t);
191 cg->impl = &amd64_code_gen_if;
192 cg->irg = be_get_birg_irg(birg);
195 cg->dump = (birg->main_env->options->dump_flags & DUMP_BE) ? 1 : 0;
197 return (arch_code_generator_t *)cg;
201 typedef ir_node *(*create_const_node_func) (dbg_info *dbg, ir_node *block);
204 * Used to create per-graph unique pseudo nodes.
206 static inline ir_node *create_const(amd64_code_gen_t *cg, ir_node **place,
207 create_const_node_func func,
208 const arch_register_t* reg)
210 ir_node *block, *res;
215 block = get_irg_start_block(cg->irg);
216 res = func(NULL, block);
217 arch_set_irn_register(res, reg);
223 const arch_isa_if_t amd64_isa_if;
224 static amd64_isa_t amd64_isa_template = {
226 &amd64_isa_if, /* isa interface implementation */
227 &amd64_gp_regs[REG_RSP], /* stack pointer register */
228 &amd64_gp_regs[REG_RBP], /* base pointer register */
229 &amd64_reg_classes[CLASS_amd64_gp], /* link pointer register class */
230 -1, /* stack direction */
231 2, /* power of two stack alignment for calls, 2^2 == 4 */
232 NULL, /* main environment */
233 7, /* costs for a spill instruction */
234 5, /* costs for a reload instruction */
239 * Initializes the backend ISA
241 static arch_env_t *amd64_init(FILE *outfile)
243 static int run_once = 0;
250 isa = XMALLOC(amd64_isa_t);
251 memcpy(isa, &amd64_isa_template, sizeof(*isa));
253 be_emit_init(outfile);
255 amd64_register_init();
256 amd64_create_opcodes(&amd64_irn_ops);
258 return &isa->arch_env;
264 * Closes the output file and frees the ISA structure.
266 static void amd64_done(void *self)
268 amd64_isa_t *isa = self;
270 /* emit now all global declarations */
271 be_gas_emit_decls(isa->arch_env.main_env);
278 static unsigned amd64_get_n_reg_class(void)
283 static const arch_register_class_t *amd64_get_reg_class(unsigned i)
285 assert(i < N_CLASSES);
286 return &amd64_reg_classes[i];
292 * Get the register class which shall be used to store a value of a given mode.
293 * @param self The this pointer.
294 * @param mode The mode in question.
295 * @return A register class which can hold values of the given mode.
297 static const arch_register_class_t *amd64_get_reg_class_for_mode(const ir_mode *mode)
299 assert(!mode_is_float(mode));
300 return &amd64_reg_classes[CLASS_amd64_gp];
306 be_abi_call_flags_bits_t flags;
307 const arch_env_t *arch_env;
311 static void *amd64_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
313 amd64_abi_env_t *env = XMALLOC(amd64_abi_env_t);
314 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
315 env->flags = fl.bits;
317 env->arch_env = arch_env;
322 * Get the between type for that call.
323 * @param self The callback object.
324 * @return The between type of for that call.
326 static ir_type *amd64_get_between_type(void *self)
328 static ir_type *between_type = NULL;
329 static ir_entity *old_bp_ent = NULL;
333 ir_entity *ret_addr_ent;
334 ir_type *ret_addr_type = new_type_primitive(mode_P);
335 ir_type *old_bp_type = new_type_primitive(mode_P);
337 between_type = new_type_class(new_id_from_str("amd64_between_type"));
338 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
339 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
341 set_entity_offset(old_bp_ent, 0);
342 set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
343 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
350 * Build the prolog, return the BASE POINTER register
352 static const arch_register_t *amd64_abi_prologue(void *self, ir_node **mem,
353 pmap *reg_map, int *stack_bias)
355 amd64_abi_env_t *env = self;
356 const arch_env_t *aenv = env->arch_env;
362 if (!env->flags.try_omit_fp) {
363 /* FIXME: maybe later here should be some code to generate
364 * the usual abi prologue */
365 return env->arch_env->bp;
368 return env->arch_env->sp;
371 /* Build the epilog */
372 static void amd64_abi_epilogue(void *self, ir_node *bl, ir_node **mem,
375 amd64_abi_env_t *env = self;
376 const arch_env_t *aenv = env->arch_env;
377 ir_node *curr_sp = be_abi_reg_map_get(reg_map, aenv->sp);
378 ir_node *curr_bp = be_abi_reg_map_get(reg_map, aenv->bp);
382 if (env->flags.try_omit_fp) {
383 curr_sp = be_new_IncSP(aenv->sp, bl, curr_sp, BE_STACK_FRAME_SIZE_SHRINK, 0);
386 be_abi_reg_map_set(reg_map, aenv->sp, curr_sp);
387 be_abi_reg_map_set(reg_map, aenv->bp, curr_bp);
390 static const be_abi_callbacks_t amd64_abi_callbacks = {
393 amd64_get_between_type,
399 * Get the ABI restrictions for procedure calls.
400 * @param self The this pointer.
401 * @param method_type The type of the method (procedure) in question.
402 * @param abi The abi object to be modified
404 static void amd64_get_call_abi(const void *self, ir_type *method_type,
409 int i, n = get_method_n_params(method_type);
410 be_abi_call_flags_t call_flags;
415 /* set abi flags for calls */
416 call_flags.bits.left_to_right = 0;
417 call_flags.bits.store_args_sequential = 1;
418 call_flags.bits.try_omit_fp = 1;
419 call_flags.bits.fp_free = 0;
420 call_flags.bits.call_has_imm = 1;
422 /* set stack parameter passing style */
423 be_abi_call_set_flags(abi, call_flags, &amd64_abi_callbacks);
425 for (i = 0; i < n; i++) {
426 tp = get_method_param_type(method_type, i);
427 mode = get_type_mode(tp);
428 //d// printf ("MODE %p %p XX %d\n", mode, mode_Iu, i);
430 if (!no_reg && (i == 0 || i == 1) && mode == mode_Iu) {
431 //d// printf("TEST%d\n", i);
432 be_abi_call_param_reg(abi, i,
433 i == 0 ? &amd64_gp_regs[REG_RDI]
434 : &amd64_gp_regs[REG_RSI],
436 /* default: all parameters on stack */
439 be_abi_call_param_stack(abi, i, mode, 4, 0, 0, ABI_CONTEXT_BOTH);
443 /* TODO: set correct return register */
444 /* default: return value is in R0 resp. F0 */
445 if (get_method_n_ress(method_type) > 0) {
446 tp = get_method_res_type(method_type, 0);
447 mode = get_type_mode(tp);
449 /* FIXME: No floating point yet */
450 /* be_abi_call_res_reg(abi, 0,
451 mode_is_float(mode) ? &amd64_fp_regs[REG_F0] : &amd64_gp_regs[REG_R0], ABI_CONTEXT_BOTH) */;
453 be_abi_call_res_reg(abi, 0,
454 &amd64_gp_regs[REG_RAX], ABI_CONTEXT_BOTH);
458 static int amd64_to_appear_in_schedule(void *block_env, const ir_node *irn)
462 if(!is_amd64_irn(irn))
469 * Initializes the code generator interface.
471 static const arch_code_generator_if_t *amd64_get_code_generator_if(
475 return &amd64_code_gen_if;
478 list_sched_selector_t amd64_sched_selector;
481 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
483 static const list_sched_selector_t *amd64_get_list_sched_selector(
484 const void *self, list_sched_selector_t *selector)
489 amd64_sched_selector = trivial_selector;
490 amd64_sched_selector.to_appear_in_schedule = amd64_to_appear_in_schedule;
491 return &amd64_sched_selector;
494 static const ilp_sched_selector_t *amd64_get_ilp_sched_selector(
502 * Returns the necessary byte alignment for storing a register of given class.
504 static int amd64_get_reg_class_alignment(const arch_register_class_t *cls)
506 ir_mode *mode = arch_register_class_mode(cls);
507 return get_mode_size_bytes(mode);
511 * Returns the libFirm configuration parameter for this backend.
513 static const backend_params *amd64_get_backend_params(void) {
514 static backend_params p = {
515 0, /* no dword lowering */
516 0, /* no inline assembly */
517 NULL, /* will be set later */
518 NULL, /* no creator function */
519 NULL, /* context for create_intrinsic_fkt */
520 NULL, /* parameter for if conversion */
521 NULL, /* float arithmetic mode */
522 0, /* no trampoline support: size 0 */
523 0, /* no trampoline support: align 0 */
524 NULL, /* no trampoline support: no trampoline builder */
525 4 /* alignment of stack parameter: typically 4 (32bit) or 8 (64bit) */
530 static const be_execution_unit_t ***amd64_get_allowed_execution_units(
539 static const be_machine_t *amd64_get_machine(const void *self)
547 static ir_graph **amd64_get_backend_irg_list(const void *self,
555 static asm_constraint_flags_t amd64_parse_asm_constraint(const char **c)
558 return ASM_CONSTRAINT_FLAG_INVALID;
561 static int amd64_is_valid_clobber(const char *clobber)
567 const arch_isa_if_t amd64_isa_if = {
570 NULL, /* handle intrinsics */
571 amd64_get_n_reg_class,
573 amd64_get_reg_class_for_mode,
575 amd64_get_code_generator_if,
576 amd64_get_list_sched_selector,
577 amd64_get_ilp_sched_selector,
578 amd64_get_reg_class_alignment,
579 amd64_get_backend_params,
580 amd64_get_allowed_execution_units,
582 amd64_get_backend_irg_list,
583 NULL, /* mark remat */
584 amd64_parse_asm_constraint,
585 amd64_is_valid_clobber
588 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_amd64);
589 void be_init_arch_amd64(void)
591 be_register_isa_if("amd64", &amd64_isa_if);
592 FIRM_DBG_REGISTER(dbg, "firm.be.amd64.cg");
593 amd64_init_transform();