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.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"
54 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
56 static arch_irn_class_t TEMPLATE_classify(const ir_node *irn)
62 static ir_entity *TEMPLATE_get_frame_entity(const ir_node *node)
65 /* TODO: return the ir_entity assigned to the frame */
70 * This function is called by the generic backend to correct offsets for
71 * nodes accessing the stack.
73 static void TEMPLATE_set_frame_offset(ir_node *irn, int offset)
77 /* TODO: correct offset if irn accesses the stack */
80 static int TEMPLATE_get_sp_bias(const ir_node *irn)
86 /* fill register allocator interface */
88 static const arch_irn_ops_t TEMPLATE_irn_ops = {
91 TEMPLATE_get_frame_entity,
92 TEMPLATE_set_frame_offset,
94 NULL, /* get_inverse */
95 NULL, /* get_op_estimated_cost */
96 NULL, /* possible_memory_operand */
97 NULL, /* perform_memory_operand */
103 * Transforms the standard firm graph into
104 * a TEMLPATE firm graph
106 static void TEMPLATE_prepare_graph(void *self)
108 TEMPLATE_code_gen_t *cg = self;
110 /* transform nodes into assembler instructions */
111 TEMPLATE_transform_graph(cg);
117 * Called immediatly before emit phase.
119 static void TEMPLATE_finish_irg(void *self)
125 static void TEMPLATE_before_ra(void *self)
128 /* Some stuff you need to do after scheduling but before register allocation */
131 static void TEMPLATE_after_ra(void *self)
134 /* Some stuff you need to do immediatly after register allocation */
140 * Emits the code, closes the output file and frees
141 * the code generator interface.
143 static void TEMPLATE_emit_and_done(void *self)
145 TEMPLATE_code_gen_t *cg = self;
146 ir_graph *irg = cg->irg;
148 TEMPLATE_emit_routine(irg);
150 /* de-allocate code generator */
154 static void *TEMPLATE_cg_init(ir_graph *irg);
156 static const arch_code_generator_if_t TEMPLATE_code_gen_if = {
158 NULL, /* get_pic_base hook */
159 NULL, /* before abi introduce hook */
160 TEMPLATE_prepare_graph,
161 NULL, /* spill hook */
162 TEMPLATE_before_ra, /* before register allocation hook */
163 TEMPLATE_after_ra, /* after register allocation hook */
165 TEMPLATE_emit_and_done
169 * Initializes the code generator.
171 static void *TEMPLATE_cg_init(ir_graph *irg)
173 const arch_env_t *arch_env = be_get_irg_arch_env(irg);
174 TEMPLATE_isa_t *isa = (TEMPLATE_isa_t *) arch_env;
175 TEMPLATE_code_gen_t *cg = XMALLOC(TEMPLATE_code_gen_t);
177 cg->impl = &TEMPLATE_code_gen_if;
181 return (arch_code_generator_t *)cg;
186 const arch_isa_if_t TEMPLATE_isa_if;
187 static TEMPLATE_isa_t TEMPLATE_isa_template = {
189 &TEMPLATE_isa_if, /* isa interface implementation */
190 &TEMPLATE_gp_regs[REG_SP], /* stack pointer register */
191 &TEMPLATE_gp_regs[REG_BP], /* base pointer register */
192 &TEMPLATE_reg_classes[CLASS_TEMPLATE_gp], /* link pointer register class */
193 -1, /* stack direction */
194 2, /* power of two stack alignment for calls, 2^2 == 4 */
195 NULL, /* main environment */
196 7, /* costs for a spill instruction */
197 5, /* costs for a reload instruction */
198 false, /* no custom abi handling */
203 * Initializes the backend ISA
205 static arch_env_t *TEMPLATE_init(FILE *outfile)
207 static int run_once = 0;
214 isa = XMALLOC(TEMPLATE_isa_t);
215 memcpy(isa, &TEMPLATE_isa_template, sizeof(*isa));
217 be_emit_init(outfile);
219 TEMPLATE_register_init();
220 TEMPLATE_create_opcodes(&TEMPLATE_irn_ops);
222 return &isa->arch_env;
228 * Closes the output file and frees the ISA structure.
230 static void TEMPLATE_done(void *self)
232 TEMPLATE_isa_t *isa = self;
234 /* emit now all global declarations */
235 be_gas_emit_decls(isa->arch_env.main_env);
242 static unsigned TEMPLATE_get_n_reg_class(void)
247 static const arch_register_class_t *TEMPLATE_get_reg_class(unsigned i)
249 assert(i < N_CLASSES);
250 return &TEMPLATE_reg_classes[i];
256 * Get the register class which shall be used to store a value of a given mode.
257 * @param self The this pointer.
258 * @param mode The mode in question.
259 * @return A register class which can hold values of the given mode.
261 static const arch_register_class_t *TEMPLATE_get_reg_class_for_mode(const ir_mode *mode)
263 if (mode_is_float(mode))
264 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_fp];
266 return &TEMPLATE_reg_classes[CLASS_TEMPLATE_gp];
272 be_abi_call_flags_bits_t flags;
273 const arch_env_t *arch_env;
275 } TEMPLATE_abi_env_t;
277 static void *TEMPLATE_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
279 TEMPLATE_abi_env_t *env = XMALLOC(TEMPLATE_abi_env_t);
280 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
281 env->flags = fl.bits;
283 env->arch_env = arch_env;
288 * Get the between type for that call.
289 * @param self The callback object.
290 * @return The between type of for that call.
292 static ir_type *TEMPLATE_get_between_type(void *self)
294 static ir_type *between_type = NULL;
295 static ir_entity *old_bp_ent = NULL;
299 ir_entity *ret_addr_ent;
300 ir_type *ret_addr_type = new_type_primitive(mode_P);
301 ir_type *old_bp_type = new_type_primitive(mode_P);
303 between_type = new_type_class(new_id_from_str("TEMPLATE_between_type"));
304 old_bp_ent = new_entity(between_type, new_id_from_str("old_bp"), old_bp_type);
305 ret_addr_ent = new_entity(between_type, new_id_from_str("old_bp"), ret_addr_type);
307 set_entity_offset(old_bp_ent, 0);
308 set_entity_offset(ret_addr_ent, get_type_size_bytes(old_bp_type));
309 set_type_size_bytes(between_type, get_type_size_bytes(old_bp_type) + get_type_size_bytes(ret_addr_type));
316 * Build the prolog, return the BASE POINTER register
318 static const arch_register_t *TEMPLATE_abi_prologue(void *self, ir_node **mem,
319 pmap *reg_map, int *stack_bias)
321 TEMPLATE_abi_env_t *env = self;
326 if (env->flags.try_omit_fp)
327 return env->arch_env->sp;
328 return env->arch_env->bp;
331 /* Build the epilog */
332 static void TEMPLATE_abi_epilogue(void *self, ir_node *bl, ir_node **mem,
341 static const be_abi_callbacks_t TEMPLATE_abi_callbacks = {
344 TEMPLATE_get_between_type,
345 TEMPLATE_abi_prologue,
346 TEMPLATE_abi_epilogue,
350 * Get the ABI restrictions for procedure calls.
351 * @param self The this pointer.
352 * @param method_type The type of the method (procedure) in question.
353 * @param abi The abi object to be modified
355 static void TEMPLATE_get_call_abi(const void *self, ir_type *method_type,
360 int i, n = get_method_n_params(method_type);
361 be_abi_call_flags_t call_flags;
364 /* set abi flags for calls */
365 call_flags.bits.left_to_right = 0;
366 call_flags.bits.store_args_sequential = 1;
367 call_flags.bits.try_omit_fp = 1;
368 call_flags.bits.fp_free = 0;
369 call_flags.bits.call_has_imm = 1;
371 /* set stack parameter passing style */
372 be_abi_call_set_flags(abi, call_flags, &TEMPLATE_abi_callbacks);
374 for (i = 0; i < n; i++) {
375 /* TODO: implement register parameter: */
376 /* reg = get reg for param i; */
377 /* be_abi_call_param_reg(abi, i, reg, ABI_CONTEXT_BOTH); */
379 /* default: all parameters on stack */
380 tp = get_method_param_type(method_type, i);
381 mode = get_type_mode(tp);
382 be_abi_call_param_stack(abi, i, mode, 4, 0, 0, ABI_CONTEXT_BOTH);
385 /* TODO: set correct return register */
386 /* default: return value is in R0 resp. F0 */
387 if (get_method_n_ress(method_type) > 0) {
388 tp = get_method_res_type(method_type, 0);
389 mode = get_type_mode(tp);
391 be_abi_call_res_reg(abi, 0,
392 mode_is_float(mode) ? &TEMPLATE_fp_regs[REG_F0] : &TEMPLATE_gp_regs[REG_R0], ABI_CONTEXT_BOTH);
396 static int TEMPLATE_to_appear_in_schedule(void *block_env, const ir_node *irn)
400 if (!is_TEMPLATE_irn(irn))
407 * Initializes the code generator interface.
409 static const arch_code_generator_if_t *TEMPLATE_get_code_generator_if(
413 return &TEMPLATE_code_gen_if;
416 list_sched_selector_t TEMPLATE_sched_selector;
419 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
421 static const list_sched_selector_t *TEMPLATE_get_list_sched_selector(
422 const void *self, list_sched_selector_t *selector)
427 TEMPLATE_sched_selector = trivial_selector;
428 TEMPLATE_sched_selector.to_appear_in_schedule = TEMPLATE_to_appear_in_schedule;
429 return &TEMPLATE_sched_selector;
432 static const ilp_sched_selector_t *TEMPLATE_get_ilp_sched_selector(
440 * Returns the necessary byte alignment for storing a register of given class.
442 static int TEMPLATE_get_reg_class_alignment(const arch_register_class_t *cls)
444 ir_mode *mode = arch_register_class_mode(cls);
445 return get_mode_size_bytes(mode);
449 * Returns the libFirm configuration parameter for this backend.
451 static const backend_params *TEMPLATE_get_backend_params(void)
453 static backend_params p = {
454 0, /* no dword lowering */
455 0, /* no inline assembly */
456 NULL, /* will be set later */
457 NULL, /* no creator function */
458 NULL, /* context for create_intrinsic_fkt */
459 NULL, /* parameter for if conversion */
460 NULL, /* float arithmetic mode */
461 0, /* no trampoline support: size 0 */
462 0, /* no trampoline support: align 0 */
463 NULL, /* no trampoline support: no trampoline builder */
464 4 /* alignment of stack parameter: typically 4 (32bit) or 8 (64bit) */
469 static const be_execution_unit_t ***TEMPLATE_get_allowed_execution_units(
477 static const be_machine_t *TEMPLATE_get_machine(const void *self)
484 static ir_graph **TEMPLATE_get_backend_irg_list(const void *self,
492 static asm_constraint_flags_t TEMPLATE_parse_asm_constraint(const char **c)
495 return ASM_CONSTRAINT_FLAG_INVALID;
498 static int TEMPLATE_is_valid_clobber(const char *clobber)
504 const arch_isa_if_t TEMPLATE_isa_if = {
507 NULL, /* handle intrinsics */
508 TEMPLATE_get_n_reg_class,
509 TEMPLATE_get_reg_class,
510 TEMPLATE_get_reg_class_for_mode,
511 TEMPLATE_get_call_abi,
512 TEMPLATE_get_code_generator_if,
513 TEMPLATE_get_list_sched_selector,
514 TEMPLATE_get_ilp_sched_selector,
515 TEMPLATE_get_reg_class_alignment,
516 TEMPLATE_get_backend_params,
517 TEMPLATE_get_allowed_execution_units,
518 TEMPLATE_get_machine,
519 TEMPLATE_get_backend_irg_list,
520 NULL, /* mark remat */
521 TEMPLATE_parse_asm_constraint,
522 TEMPLATE_is_valid_clobber
525 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_TEMPLATE);
526 void be_init_arch_TEMPLATE(void)
528 be_register_isa_if("TEMPLATE", &TEMPLATE_isa_if);
529 FIRM_DBG_REGISTER(dbg, "firm.be.TEMPLATE.cg");
530 TEMPLATE_init_transform();