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)
66 if (is_amd64_FrameAddr(node)) {
67 const amd64_SymConst_attr_t *attr = get_irn_generic_attr_const(node);
72 /* TODO: return the ir_entity assigned to the frame */
76 static void amd64_set_frame_entity(ir_node *node, ir_entity *ent)
80 /* TODO: set the ir_entity assigned to the frame */
84 * This function is called by the generic backend to correct offsets for
85 * nodes accessing the stack.
87 static void amd64_set_frame_offset(ir_node *irn, int offset)
89 if (is_amd64_FrameAddr(irn)) {
90 amd64_SymConst_attr_t *attr = get_irn_generic_attr(irn);
91 attr->fp_offset += offset;
95 static int amd64_get_sp_bias(const ir_node *irn)
101 /* fill register allocator interface */
103 static const arch_irn_ops_t amd64_irn_ops = {
106 amd64_get_frame_entity,
107 amd64_set_frame_entity,
108 amd64_set_frame_offset,
110 NULL, /* get_inverse */
111 NULL, /* get_op_estimated_cost */
112 NULL, /* possible_memory_operand */
113 NULL, /* perform_memory_operand */
119 * Transforms the standard firm graph into
122 static void amd64_prepare_graph(void *self)
124 amd64_code_gen_t *cg = self;
126 amd64_transform_graph (cg);
129 dump_ir_graph(cg->irg, "transformed");
135 * Called immediatly before emit phase.
137 static void amd64_finish_irg(void *self)
139 amd64_code_gen_t *cg = self;
140 ir_graph *irg = cg->irg;
142 dump_ir_graph(irg, "amd64-finished");
145 static void amd64_before_ra(void *self)
147 amd64_code_gen_t *cg = self;
149 be_sched_fix_flags(cg->birg, &amd64_reg_classes[CLASS_amd64_flags], 0);
152 static void amd64_after_ra(void *self)
155 /* Some stuff you need to do immediatly after register allocation */
161 * Emits the code, closes the output file and frees
162 * the code generator interface.
164 static void amd64_emit_and_done(void *self)
166 amd64_code_gen_t *cg = self;
167 ir_graph *irg = cg->irg;
169 amd64_gen_routine(cg, irg);
171 /* de-allocate code generator */
175 static void *amd64_cg_init(be_irg_t *birg);
177 static const arch_code_generator_if_t amd64_code_gen_if = {
179 NULL, /* get_pic_base hook */
180 NULL, /* before abi introduce hook */
182 NULL, /* spill hook */
183 amd64_before_ra, /* before register allocation hook */
184 amd64_after_ra, /* after register allocation hook */
190 * Initializes the code generator.
192 static void *amd64_cg_init(be_irg_t *birg)
194 const arch_env_t *arch_env = be_get_birg_arch_env(birg);
195 amd64_isa_t *isa = (amd64_isa_t *) arch_env;
196 amd64_code_gen_t *cg = XMALLOC(amd64_code_gen_t);
198 cg->impl = &amd64_code_gen_if;
199 cg->irg = be_get_birg_irg(birg);
202 cg->dump = (birg->main_env->options->dump_flags & DUMP_BE) ? 1 : 0;
204 return (arch_code_generator_t *)cg;
208 typedef ir_node *(*create_const_node_func) (dbg_info *dbg, ir_node *block);
211 * Used to create per-graph unique pseudo nodes.
213 static inline ir_node *create_const(amd64_code_gen_t *cg, ir_node **place,
214 create_const_node_func func,
215 const arch_register_t* reg)
217 ir_node *block, *res;
222 block = get_irg_start_block(cg->irg);
223 res = func(NULL, block);
224 arch_set_irn_register(res, reg);
230 const arch_isa_if_t amd64_isa_if;
231 static amd64_isa_t amd64_isa_template = {
233 &amd64_isa_if, /* isa interface implementation */
234 &amd64_gp_regs[REG_RSP], /* stack pointer register */
235 &amd64_gp_regs[REG_RBP], /* base pointer register */
236 &amd64_reg_classes[CLASS_amd64_gp], /* 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
248 static arch_env_t *amd64_init(FILE *outfile)
250 static int run_once = 0;
257 isa = XMALLOC(amd64_isa_t);
258 memcpy(isa, &amd64_isa_template, sizeof(*isa));
260 be_emit_init(outfile);
262 amd64_register_init();
263 amd64_create_opcodes(&amd64_irn_ops);
265 return &isa->arch_env;
271 * Closes the output file and frees the ISA structure.
273 static void amd64_done(void *self)
275 amd64_isa_t *isa = self;
277 /* emit now all global declarations */
278 be_gas_emit_decls(isa->arch_env.main_env);
285 static unsigned amd64_get_n_reg_class(void)
290 static const arch_register_class_t *amd64_get_reg_class(unsigned i)
292 assert(i < N_CLASSES);
293 return &amd64_reg_classes[i];
299 * Get the register class which shall be used to store a value of a given mode.
300 * @param self The this pointer.
301 * @param mode The mode in question.
302 * @return A register class which can hold values of the given mode.
304 static const arch_register_class_t *amd64_get_reg_class_for_mode(const ir_mode *mode)
306 assert(!mode_is_float(mode));
307 return &amd64_reg_classes[CLASS_amd64_gp];
313 be_abi_call_flags_bits_t flags;
314 const arch_env_t *arch_env;
318 static void *amd64_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
320 amd64_abi_env_t *env = XMALLOC(amd64_abi_env_t);
321 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
322 env->flags = fl.bits;
324 env->arch_env = arch_env;
329 * Get the between type for that call.
330 * @param self The callback object.
331 * @return The between type of for that call.
333 static ir_type *amd64_get_between_type(void *self)
335 static ir_type *between_type = NULL;
336 static ir_entity *old_bp_ent = NULL;
340 ir_entity *ret_addr_ent;
341 ir_type *ret_addr_type = new_type_primitive(mode_P);
342 ir_type *old_bp_type = new_type_primitive(mode_P);
344 between_type = new_type_class(new_id_from_str("amd64_between_type"));
345 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
346 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
348 set_entity_offset(old_bp_ent, 0);
349 set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
350 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
357 * Build the prolog, return the BASE POINTER register
359 static const arch_register_t *amd64_abi_prologue(void *self, ir_node **mem,
360 pmap *reg_map, int *stack_bias)
362 amd64_abi_env_t *env = self;
363 const arch_env_t *aenv = env->arch_env;
369 if (!env->flags.try_omit_fp) {
370 /* FIXME: maybe later here should be some code to generate
371 * the usual abi prologue */
372 return env->arch_env->bp;
375 return env->arch_env->sp;
378 /* Build the epilog */
379 static void amd64_abi_epilogue(void *self, ir_node *bl, ir_node **mem,
382 amd64_abi_env_t *env = self;
383 const arch_env_t *aenv = env->arch_env;
384 ir_node *curr_sp = be_abi_reg_map_get(reg_map, aenv->sp);
385 ir_node *curr_bp = be_abi_reg_map_get(reg_map, aenv->bp);
389 if (env->flags.try_omit_fp) {
390 curr_sp = be_new_IncSP(aenv->sp, bl, curr_sp, BE_STACK_FRAME_SIZE_SHRINK, 0);
393 be_abi_reg_map_set(reg_map, aenv->sp, curr_sp);
394 be_abi_reg_map_set(reg_map, aenv->bp, curr_bp);
397 static const be_abi_callbacks_t amd64_abi_callbacks = {
400 amd64_get_between_type,
406 * Get the ABI restrictions for procedure calls.
407 * @param self The this pointer.
408 * @param method_type The type of the method (procedure) in question.
409 * @param abi The abi object to be modified
411 static void amd64_get_call_abi(const void *self, ir_type *method_type,
416 int i, n = get_method_n_params(method_type);
417 be_abi_call_flags_t call_flags;
422 /* set abi flags for calls */
423 call_flags.bits.left_to_right = 0;
424 call_flags.bits.store_args_sequential = 1;
425 call_flags.bits.try_omit_fp = 1;
426 call_flags.bits.fp_free = 0;
427 call_flags.bits.call_has_imm = 1;
429 /* set stack parameter passing style */
430 be_abi_call_set_flags(abi, call_flags, &amd64_abi_callbacks);
432 for (i = 0; i < n; i++) {
433 tp = get_method_param_type(method_type, i);
434 mode = get_type_mode(tp);
435 //d// printf ("MODE %p %p XX %d\n", mode, mode_Iu, i);
437 if (!no_reg && (i == 0 || i == 1) && mode == mode_Iu) {
438 //d// printf("TEST%d\n", i);
439 be_abi_call_param_reg(abi, i,
440 i == 0 ? &amd64_gp_regs[REG_RDI]
441 : &amd64_gp_regs[REG_RSI],
443 /* default: all parameters on stack */
446 be_abi_call_param_stack(abi, i, mode, 4, 0, 0, ABI_CONTEXT_BOTH);
450 /* TODO: set correct return register */
451 /* default: return value is in R0 resp. F0 */
452 if (get_method_n_ress(method_type) > 0) {
453 tp = get_method_res_type(method_type, 0);
454 mode = get_type_mode(tp);
456 /* FIXME: No floating point yet */
457 /* be_abi_call_res_reg(abi, 0,
458 mode_is_float(mode) ? &amd64_fp_regs[REG_F0] : &amd64_gp_regs[REG_R0], ABI_CONTEXT_BOTH) */;
460 be_abi_call_res_reg(abi, 0,
461 &amd64_gp_regs[REG_RAX], ABI_CONTEXT_BOTH);
465 static int amd64_to_appear_in_schedule(void *block_env, const ir_node *irn)
469 if(!is_amd64_irn(irn))
476 * Initializes the code generator interface.
478 static const arch_code_generator_if_t *amd64_get_code_generator_if(
482 return &amd64_code_gen_if;
485 list_sched_selector_t amd64_sched_selector;
488 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
490 static const list_sched_selector_t *amd64_get_list_sched_selector(
491 const void *self, list_sched_selector_t *selector)
496 amd64_sched_selector = trivial_selector;
497 amd64_sched_selector.to_appear_in_schedule = amd64_to_appear_in_schedule;
498 return &amd64_sched_selector;
501 static const ilp_sched_selector_t *amd64_get_ilp_sched_selector(
509 * Returns the necessary byte alignment for storing a register of given class.
511 static int amd64_get_reg_class_alignment(const arch_register_class_t *cls)
513 ir_mode *mode = arch_register_class_mode(cls);
514 return get_mode_size_bytes(mode);
518 * Returns the libFirm configuration parameter for this backend.
520 static const backend_params *amd64_get_backend_params(void) {
521 static backend_params p = {
522 0, /* no dword lowering */
523 0, /* no inline assembly */
524 NULL, /* will be set later */
525 NULL, /* no creator function */
526 NULL, /* context for create_intrinsic_fkt */
527 NULL, /* parameter for if conversion */
528 NULL, /* float arithmetic mode */
529 0, /* no trampoline support: size 0 */
530 0, /* no trampoline support: align 0 */
531 NULL, /* no trampoline support: no trampoline builder */
532 4 /* alignment of stack parameter: typically 4 (32bit) or 8 (64bit) */
537 static const be_execution_unit_t ***amd64_get_allowed_execution_units(
546 static const be_machine_t *amd64_get_machine(const void *self)
554 static ir_graph **amd64_get_backend_irg_list(const void *self,
562 static asm_constraint_flags_t amd64_parse_asm_constraint(const char **c)
565 return ASM_CONSTRAINT_FLAG_INVALID;
568 static int amd64_is_valid_clobber(const char *clobber)
574 const arch_isa_if_t amd64_isa_if = {
577 NULL, /* handle intrinsics */
578 amd64_get_n_reg_class,
580 amd64_get_reg_class_for_mode,
582 amd64_get_code_generator_if,
583 amd64_get_list_sched_selector,
584 amd64_get_ilp_sched_selector,
585 amd64_get_reg_class_alignment,
586 amd64_get_backend_params,
587 amd64_get_allowed_execution_units,
589 amd64_get_backend_irg_list,
590 NULL, /* mark remat */
591 amd64_parse_asm_constraint,
592 amd64_is_valid_clobber
595 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_amd64);
596 void be_init_arch_amd64(void)
598 be_register_isa_if("amd64", &amd64_isa_if);
599 FIRM_DBG_REGISTER(dbg, "firm.be.amd64.cg");
600 amd64_init_transform();