X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Farm%2Fbearch_arm.c;h=3914f4a8e7810c002be2eab7a9182504c30ff560;hb=cb7d9c5f3f77ee4ad4d47e46407532ba8615831f;hp=189190c5f69b2927f20958d58b87a37615303023;hpb=021dd42c11eca475bae9fb4176a6b8f02f471c43;p=libfirm diff --git a/ir/be/arm/bearch_arm.c b/ir/be/arm/bearch_arm.c index 189190c5f..3914f4a8e 100644 --- a/ir/be/arm/bearch_arm.c +++ b/ir/be/arm/bearch_arm.c @@ -5,6 +5,11 @@ #include "config.h" #endif +#ifdef WITH_LIBCORE +#include +#include +#endif /* WITH_LIBCORE */ + #include "pseudo_irg.h" #include "irgwalk.h" #include "irprog.h" @@ -63,7 +68,7 @@ static const arch_register_req_t *arm_get_irn_reg_req(const void *self, arch_reg const arm_register_req_t *irn_req; long node_pos = pos == -1 ? 0 : pos; ir_mode *mode = get_irn_mode(irn); - firm_dbg_module_t *mod = firm_dbg_register(DEBUG_MODULE); + FIRM_DBG_REGISTER(firm_dbg_module_t *mod, DEBUG_MODULE); if (is_Block(irn) || mode == mode_X || mode == mode_M) { DBG((mod, LEVEL_1, "ignoring mode_T, mode_M node %+F\n", irn)); @@ -122,10 +127,10 @@ static const arch_register_req_t *arm_get_irn_reg_req(const void *self, arch_reg DB((mod, LEVEL_1, "returning standard reqs for %+F\n", irn)); if (mode_is_float(mode)) { - memcpy(req, &(arm_default_req_arm_floating_point.req), sizeof(*req)); + memcpy(req, &(arm_default_req_arm_fpa.req), sizeof(*req)); } else if (mode_is_int(mode) || mode_is_reference(mode)) { - memcpy(req, &(arm_default_req_arm_general_purpose.req), sizeof(*req)); + memcpy(req, &(arm_default_req_arm_gp.req), sizeof(*req)); } else if (mode == mode_T || mode == mode_M) { DBG((mod, LEVEL_1, "ignoring Phi node %+F\n", irn)); @@ -243,7 +248,8 @@ static const arch_irn_ops_if_t arm_irn_ops_if = { arm_classify, arm_get_flags, arm_get_frame_entity, - arm_set_stack_bias + arm_set_stack_bias, + NULL }; arm_irn_ops_t arm_irn_ops = { @@ -265,12 +271,13 @@ arm_irn_ops_t arm_irn_ops = { **************************************************/ /** - * Transforms the standard firm graph into - * a ARM firm graph + * Transforms the standard Firm graph into + * a ARM firm graph. */ static void arm_prepare_graph(void *self) { arm_code_gen_t *cg = self; + arm_register_transformers(); irg_walk_blkwise_graph(cg->irg, arm_move_consts, arm_transform_node, cg); } @@ -305,10 +312,10 @@ static void arm_before_ra(void *self) { static void arm_emit_and_done(void *self) { arm_code_gen_t *cg = self; ir_graph *irg = cg->irg; - FILE *out = cg->out; + FILE *out = cg->isa->out; if (cg->emit_decls) { - arm_gen_decls(cg->out); + arm_gen_decls(out); cg->emit_decls = 0; } @@ -323,20 +330,84 @@ static void arm_emit_and_done(void *self) { free(self); } -enum convert_which { low, high }; +/** + * Move a double floating point value into an integer register. + * Place the move operation into block bl. + * + * Handle some special cases here: + * 1.) A constant: simply split into two + * 2.) A load: siply split into two + */ +static ir_node *convert_dbl_to_int(ir_node *bl, ir_node *arg, ir_node *mem, + ir_node **resH, ir_node **resL) { + if (is_Const(arg)) { + tarval *tv = get_Const_tarval(arg); + unsigned v; + + /* get the upper 32 bits */ + v = get_tarval_sub_bits(tv, 7); + v = (v << 8) | get_tarval_sub_bits(tv, 6); + v = (v << 8) | get_tarval_sub_bits(tv, 5); + v = (v << 8) | get_tarval_sub_bits(tv, 4); + *resH = new_Const_long(mode_Is, v); + + /* get the lower 32 bits */ + v = get_tarval_sub_bits(tv, 3); + v = (v << 8) | get_tarval_sub_bits(tv, 2); + v = (v << 8) | get_tarval_sub_bits(tv, 1); + v = (v << 8) | get_tarval_sub_bits(tv, 0); + *resL = new_Const_long(mode_Is, v); + } + else if (get_irn_op(skip_Proj(arg)) == op_Load) { + /* FIXME: handling of low/high depends on LE/BE here */ + assert(0); + } + else { + ir_graph *irg = current_ir_graph; + ir_node *conv; + + conv = new_rd_arm_fpaDbl2GP(NULL, irg, bl, arg, mem); + /* move high/low */ + *resL = new_r_Proj(irg, bl, conv, mode_Is, pn_arm_fpaDbl2GP_low); + *resH = new_r_Proj(irg, bl, conv, mode_Is, pn_arm_fpaDbl2GP_high); + mem = new_r_Proj(irg, bl, conv, mode_M, pn_arm_fpaDbl2GP_M); + } + return mem; +} /** - * Move an floating point value to a integer register. + * Move a single floating point value into an integer register. * Place the move operation into block bl. + * + * Handle some special cases here: + * 1.) A constant: simply move + * 2.) A load: siply load */ -static ir_node *convert_to_int(ir_node *bl, ir_node *arg, enum convert_which which) { +static ir_node *convert_sng_to_int(ir_node *bl, ir_node *arg) { + if (is_Const(arg)) { + tarval *tv = get_Const_tarval(arg); + unsigned v; + + /* get the lower 32 bits */ + v = get_tarval_sub_bits(tv, 3); + v = (v << 8) | get_tarval_sub_bits(tv, 2); + v = (v << 8) | get_tarval_sub_bits(tv, 1); + v = (v << 8) | get_tarval_sub_bits(tv, 0); + return new_Const_long(mode_Is, v); + } + else if (get_irn_op(skip_Proj(arg)) == op_Load) { + ir_node *load; + + load = skip_Proj(arg); + } + assert(0); return NULL; } /** * Convert the arguments of a call to support the * ARM calling convention of general purpose AND floating - * point arguments + * point arguments. */ static void handle_calls(ir_node *call, void *env) { @@ -372,18 +443,20 @@ static void handle_calls(ir_node *call, void *env) if (mode_is_float(mode)) { if (get_mode_size_bits(mode) > 32) { + ir_node *mem = get_Call_mem(call); + + /* Beware: ARM wants the high part first */ size += 2 * 4; - new_tp[idx] = cg->int_tp; - new_in[idx] = convert_to_int(bl, get_Call_param(call, i), low); - ++idx; - new_tp[idx] = cg->int_tp; - new_in[idx] = convert_to_int(bl, get_Call_param(call, i), high); - ++idx; + new_tp[idx] = cg->int_tp; + new_tp[idx+1] = cg->int_tp; + mem = convert_dbl_to_int(bl, get_Call_param(call, i), mem, &new_in[idx], &new_in[idx+1]); + idx += 2; + set_Call_mem(call, mem); } else { size += 4; new_tp[idx] = cg->int_tp; - new_in[idx] = convert_to_int(bl, get_Call_param(call, i), low); + new_in[idx] = convert_sng_to_int(bl, get_Call_param(call, i)); ++idx; } flag = 1; @@ -442,7 +515,7 @@ static void handle_calls(ir_node *call, void *env) } /** - * Handle graph transformations before the abi converter does it's work + * Handle graph transformations before the abi converter does its work. */ static void arm_before_abi(void *self) { arm_code_gen_t *cg = self; @@ -450,27 +523,27 @@ static void arm_before_abi(void *self) { irg_walk_graph(cg->irg, NULL, handle_calls, cg); } -static void *arm_cg_init(FILE *F, const be_irg_t *birg); +static void *arm_cg_init(const be_irg_t *birg); static const arch_code_generator_if_t arm_code_gen_if = { arm_cg_init, - arm_before_abi, /* before abi introduce */ + arm_before_abi, /* before abi introduce */ arm_prepare_graph, arm_before_sched, /* before scheduling hook */ arm_before_ra, /* before register allocation hook */ - NULL, /* after register allocation */ + NULL, /* after register allocation */ arm_emit_and_done, }; /** * Initializes the code generator. */ -static void *arm_cg_init(FILE *F, const be_irg_t *birg) { +static void *arm_cg_init(const be_irg_t *birg) { static ir_type *int_tp = NULL; arm_isa_t *isa = (arm_isa_t *)birg->main_env->arch_env->isa; arm_code_gen_t *cg; - if (! int_tp) { + if (! int_tp) { /* create an integer type with machine size */ int_tp = new_type_primitive(new_id_from_chars("int", 3), mode_Is); } @@ -479,11 +552,13 @@ static void *arm_cg_init(FILE *F, const be_irg_t *birg) { cg->impl = &arm_code_gen_if; cg->irg = birg->irg; cg->reg_set = new_set(arm_cmp_irn_reg_assoc, 1024); - cg->mod = firm_dbg_register("firm.be.arm.cg"); - cg->out = F; cg->arch_env = birg->main_env->arch_env; + cg->isa = isa; cg->birg = birg; cg->int_tp = int_tp; + cg->have_fp = 0; + + FIRM_DBG_REGISTER(cg->mod, "firm.be.arm.cg"); isa->num_codegens++; @@ -496,6 +571,9 @@ static void *arm_cg_init(FILE *F, const be_irg_t *birg) { arm_irn_ops.cg = cg; + /* enter the current code generator */ + isa->cg = cg; + return (arch_code_generator_t *)cg; } @@ -505,7 +583,7 @@ static void *arm_cg_init(FILE *F, const be_irg_t *birg) { * and map all instructions the backend did not support * to runtime calls. */ -void arm_global_init(void) { +static void arm_handle_intrinsics(void) { ir_type *tp, *int_tp, *uint_tp; i_record records[8]; int n_records = 0; @@ -515,6 +593,7 @@ void arm_global_init(void) { int_tp = new_type_primitive(ID("int"), mode_Is); uint_tp = new_type_primitive(ID("uint"), mode_Iu); + /* ARM has neither a signed div instruction ... */ { runtime_rt rt_Div; i_instr_record *map_Div = &records[n_records++].i_instr; @@ -535,9 +614,10 @@ void arm_global_init(void) { map_Div->kind = INTRINSIC_INSTR; map_Div->op = op_Div; - map_Div->i_mapper = i_mapper_RuntimeCall; + map_Div->i_mapper = (i_mapper_func)i_mapper_RuntimeCall; map_Div->ctx = &rt_Div; } + /* ... nor a signed div instruction ... */ { runtime_rt rt_Div; i_instr_record *map_Div = &records[n_records++].i_instr; @@ -558,9 +638,10 @@ void arm_global_init(void) { map_Div->kind = INTRINSIC_INSTR; map_Div->op = op_Div; - map_Div->i_mapper = i_mapper_RuntimeCall; + map_Div->i_mapper = (i_mapper_func)i_mapper_RuntimeCall; map_Div->ctx = &rt_Div; } + /* ... nor a signed mod instruction ... */ { runtime_rt rt_Mod; i_instr_record *map_Mod = &records[n_records++].i_instr; @@ -581,9 +662,10 @@ void arm_global_init(void) { map_Mod->kind = INTRINSIC_INSTR; map_Mod->op = op_Mod; - map_Mod->i_mapper = i_mapper_RuntimeCall; + map_Mod->i_mapper = (i_mapper_func)i_mapper_RuntimeCall; map_Mod->ctx = &rt_Mod; } + /* ... nor a unsigned mod. */ { runtime_rt rt_Mod; i_instr_record *map_Mod = &records[n_records++].i_instr; @@ -604,7 +686,7 @@ void arm_global_init(void) { map_Mod->kind = INTRINSIC_INSTR; map_Mod->op = op_Mod; - map_Mod->i_mapper = i_mapper_RuntimeCall; + map_Mod->i_mapper = (i_mapper_func)i_mapper_RuntimeCall; map_Mod->ctx = &rt_Mod; } @@ -623,56 +705,79 @@ void arm_global_init(void) { *****************************************************************/ static arm_isa_t arm_isa_template = { - &arm_isa_if, /* isa interface */ - &arm_general_purpose_regs[REG_R13], /* stack pointer */ - &arm_general_purpose_regs[REG_R11], /* base pointer */ - -1, /* stack direction */ - 0 /* number of codegenerator objects */ + &arm_isa_if, /* isa interface */ + &arm_gp_regs[REG_SP], /* stack pointer */ + &arm_gp_regs[REG_R11], /* base pointer */ + -1, /* stack direction */ + 0, /* number of codegenerator objects */ + 0, /* use generic register names instead of SP, LR, PC */ + NULL, /* current code generator */ + NULL, /* output file */ + ARM_FPU_ARCH_FPE, /* FPU architecture */ }; /** * Initializes the backend ISA and opens the output file. */ -static void *arm_init(void) { +static void *arm_init(FILE *file_handle) { static int inited = 0; arm_isa_t *isa; if(inited) return NULL; - isa = xcalloc(1, sizeof(*isa)); + isa = xmalloc(sizeof(*isa)); memcpy(isa, &arm_isa_template, sizeof(*isa)); arm_register_init(isa); + if (isa->gen_reg_names) { + /* patch register names */ + arm_gp_regs[REG_R11].name = "r11"; + arm_gp_regs[REG_SP].name = "r13"; + arm_gp_regs[REG_LR].name = "r14"; + arm_gp_regs[REG_PC].name = "r15"; + } + + isa->cg = NULL; + isa->out = file_handle; + arm_create_opcodes(); + arm_handle_intrinsics(); + arm_switch_section(NULL, NO_SECTION); inited = 1; - return isa; } /** - * Closes the output file and frees the ISA structure. + * frees the ISA structure. */ static void arm_done(void *self) { free(self); } - +/** + * Report the number of register classes. + * If we don't have fp instructions, report only GP + * here to speed up register allocation (and makes dumps + * smaller and more readable). + */ static int arm_get_n_reg_class(const void *self) { - return N_CLASSES; + const arm_isa_t *isa = self; + + return isa->cg->have_fp ? 2 : 1; } +/** + * Return the register class with requested index. + */ static const arch_register_class_t *arm_get_reg_class(const void *self, int i) { - assert(i >= 0 && i < N_CLASSES && "Invalid arm register class requested."); - return &arm_reg_classes[i]; + return i == 0 ? &arm_reg_classes[CLASS_arm_gp] : &arm_reg_classes[CLASS_arm_fpa]; } - - /** * Get the register class which shall be used to store a value of a given mode. * @param self The this pointer. @@ -681,13 +786,11 @@ static const arch_register_class_t *arm_get_reg_class(const void *self, int i) { */ const arch_register_class_t *arm_get_reg_class_for_mode(const void *self, const ir_mode *mode) { if (mode_is_float(mode)) - return &arm_reg_classes[CLASS_arm_floating_point]; + return &arm_reg_classes[CLASS_arm_fpa]; else - return &arm_reg_classes[CLASS_arm_general_purpose]; + return &arm_reg_classes[CLASS_arm_gp]; } - - /** * Produces the type which sits between the stack args and the locals on the stack. * it will contain the return address and space to store the old base pointer. @@ -715,12 +818,6 @@ static ir_type *arm_get_between_type(void *self) { } - - - - - - typedef struct { be_abi_call_flags_bits_t flags; const arch_env_t *arch_env; @@ -730,7 +827,7 @@ typedef struct { static void *arm_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg) { - arm_abi_env_t *env = xmalloc(sizeof(env[0])); + arm_abi_env_t *env = xmalloc(sizeof(env[0])); be_abi_call_flags_t fl = be_abi_call_get_flags(call); env->flags = fl.bits; env->irg = irg; @@ -742,7 +839,7 @@ static void *arm_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, static void arm_abi_dont_save_regs(void *self, pset *s) { arm_abi_env_t *env = self; - if(env->flags.try_omit_fp) + if (env->flags.try_omit_fp) pset_insert_ptr(s, env->isa->bp); } @@ -758,63 +855,63 @@ static const arch_register_t *arm_abi_prologue(void *self, ir_node **mem, pmap * ir_node *block = get_irg_start_block(irg); // ir_node *regs[16]; // int n_regs = 0; - arch_register_class_t *gp = &arm_reg_classes[CLASS_arm_general_purpose]; + arch_register_class_t *gp = &arm_reg_classes[CLASS_arm_gp]; static const arm_register_req_t *fp_req[] = { - &arm_default_req_arm_general_purpose_r11 + &arm_default_req_arm_gp_r11 }; ir_node *fp = be_abi_reg_map_get(reg_map, env->isa->bp); - ir_node *ip = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R12]); + ir_node *ip = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_R12]); ir_node *sp = be_abi_reg_map_get(reg_map, env->isa->sp); - ir_node *lr = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R14]); - ir_node *pc = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R15]); -// ir_node *r0 = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R0]); -// ir_node *r1 = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R1]); -// ir_node *r2 = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R2]); -// ir_node *r3 = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R3]); + ir_node *lr = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_LR]); + ir_node *pc = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_PC]); +// ir_node *r0 = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_R0]); +// ir_node *r1 = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_R1]); +// ir_node *r2 = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_R2]); +// ir_node *r3 = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_R3]); if(env->flags.try_omit_fp) return env->isa->sp; ip = be_new_Copy(gp, irg, block, sp ); - arch_set_irn_register(env->arch_env, ip, &arm_general_purpose_regs[REG_R12]); - be_set_constr_single_reg(ip, BE_OUT_POS(0), &arm_general_purpose_regs[REG_R12] ); + arch_set_irn_register(env->arch_env, ip, &arm_gp_regs[REG_R12]); + be_set_constr_single_reg(ip, BE_OUT_POS(0), &arm_gp_regs[REG_R12] ); // if (r0) regs[n_regs++] = r0; // if (r1) regs[n_regs++] = r1; // if (r2) regs[n_regs++] = r2; // if (r3) regs[n_regs++] = r3; // sp = new_r_arm_StoreStackMInc(irg, block, *mem, sp, n_regs, regs, get_irn_mode(sp)); -// set_arm_req_out(sp, &arm_default_req_arm_general_purpose_r13, 0); +// set_arm_req_out(sp, &arm_default_req_arm_gp_sp, 0); // arch_set_irn_register(env->arch_env, sp, env->isa->sp); - store = new_rd_arm_StoreStackM4Inc(NULL, irg, block, sp, fp, ip, lr, pc, *mem, mode_T); - set_arm_req_out(store, &arm_default_req_arm_general_purpose_r13, 0); + store = new_rd_arm_StoreStackM4Inc(NULL, irg, block, sp, fp, ip, lr, pc, *mem); + set_arm_req_out(store, &arm_default_req_arm_gp_sp, 0); // arch_set_irn_register(env->arch_env, store, env->isa->sp); - sp = new_r_Proj(irg, block, store, env->isa->sp->reg_class->mode, 0); + sp = new_r_Proj(irg, block, store, env->isa->sp->reg_class->mode, pn_arm_StoreStackM4Inc_ptr); arch_set_irn_register(env->arch_env, sp, env->isa->sp); - *mem = new_r_Proj(irg, block, store, mode_M, 1); + *mem = new_r_Proj(irg, block, store, mode_M, pn_arm_StoreStackM4Inc_M); keep = be_new_CopyKeep_single(gp, irg, block, ip, sp, get_irn_mode(ip)); be_node_set_reg_class(keep, 1, gp); - arch_set_irn_register(env->arch_env, keep, &arm_general_purpose_regs[REG_R12]); - be_set_constr_single_reg(keep, BE_OUT_POS(0), &arm_general_purpose_regs[REG_R12] ); + arch_set_irn_register(env->arch_env, keep, &arm_gp_regs[REG_R12]); + be_set_constr_single_reg(keep, BE_OUT_POS(0), &arm_gp_regs[REG_R12] ); - fp = new_rd_arm_Sub_i(NULL, irg, block, keep, get_irn_mode(fp) ); - set_arm_value(fp, new_tarval_from_long(4, mode_Iu)); + fp = new_rd_arm_Sub_i(NULL, irg, block, keep, get_irn_mode(fp), + new_tarval_from_long(4, get_irn_mode(fp))); set_arm_req_out_all(fp, fp_req); - //set_arm_req_out(fp, &arm_default_req_arm_general_purpose_r11, 0); + //set_arm_req_out(fp, &arm_default_req_arm_gp_r11, 0); arch_set_irn_register(env->arch_env, fp, env->isa->bp); -// be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R0], r0); -// be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R1], r1); -// be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R2], r2); -// be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R3], r3); +// be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_R0], r0); +// be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_R1], r1); +// be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_R2], r2); +// be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_R3], r3); be_abi_reg_map_set(reg_map, env->isa->bp, fp); - be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R12], keep); + be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_R12], keep); be_abi_reg_map_set(reg_map, env->isa->sp, sp); - be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R14], lr); - be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R15], pc); + be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_LR], lr); + be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_PC], pc); return env->isa->bp; } @@ -823,47 +920,47 @@ static void arm_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_m arm_abi_env_t *env = self; ir_node *curr_sp = be_abi_reg_map_get(reg_map, env->isa->sp); ir_node *curr_bp = be_abi_reg_map_get(reg_map, env->isa->bp); - ir_node *curr_pc = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R15]); - ir_node *curr_lr = be_abi_reg_map_get(reg_map, &arm_general_purpose_regs[REG_R14]); + ir_node *curr_pc = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_PC]); + ir_node *curr_lr = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_LR]); static const arm_register_req_t *sub12_req[] = { - &arm_default_req_arm_general_purpose_r13 + &arm_default_req_arm_gp_sp }; // TODO: Activate Omit fp in epilogue if(env->flags.try_omit_fp) { curr_sp = be_new_IncSP(env->isa->sp, env->irg, bl, curr_sp, *mem, BE_STACK_FRAME_SIZE, be_stack_dir_shrink); - curr_lr = be_new_CopyKeep_single(&arm_reg_classes[CLASS_arm_general_purpose], env->irg, bl, curr_lr, curr_sp, get_irn_mode(curr_lr)); - be_node_set_reg_class(curr_lr, 1, &arm_reg_classes[CLASS_arm_general_purpose]); - arch_set_irn_register(env->arch_env, curr_lr, &arm_general_purpose_regs[REG_R14]); - be_set_constr_single_reg(curr_lr, BE_OUT_POS(0), &arm_general_purpose_regs[REG_R14] ); + curr_lr = be_new_CopyKeep_single(&arm_reg_classes[CLASS_arm_gp], env->irg, bl, curr_lr, curr_sp, get_irn_mode(curr_lr)); + be_node_set_reg_class(curr_lr, 1, &arm_reg_classes[CLASS_arm_gp]); + arch_set_irn_register(env->arch_env, curr_lr, &arm_gp_regs[REG_LR]); + be_set_constr_single_reg(curr_lr, BE_OUT_POS(0), &arm_gp_regs[REG_LR] ); - curr_pc = be_new_Copy(&arm_reg_classes[CLASS_arm_general_purpose], env->irg, bl, curr_lr ); - arch_set_irn_register(env->arch_env, curr_pc, &arm_general_purpose_regs[REG_R15]); - be_set_constr_single_reg(curr_pc, BE_OUT_POS(0), &arm_general_purpose_regs[REG_R15] ); + curr_pc = be_new_Copy(&arm_reg_classes[CLASS_arm_gp], env->irg, bl, curr_lr ); + arch_set_irn_register(env->arch_env, curr_pc, &arm_gp_regs[REG_PC]); + be_set_constr_single_reg(curr_pc, BE_OUT_POS(0), &arm_gp_regs[REG_PC] ); } else { ir_node *sub12_node; ir_node *load_node; - sub12_node = new_rd_arm_Sub_i(NULL, env->irg, bl, curr_bp, mode_Iu ); - set_arm_value(sub12_node, new_tarval_from_long(12,mode_Iu)); + tarval *tv = new_tarval_from_long(12,mode_Iu); + sub12_node = new_rd_arm_Sub_i(NULL, env->irg, bl, curr_bp, mode_Iu, tv); set_arm_req_out_all(sub12_node, sub12_req); arch_set_irn_register(env->arch_env, sub12_node, env->isa->sp); - load_node = new_rd_arm_LoadStackM3( NULL, env->irg, bl, sub12_node, *mem, mode_T ); - set_arm_req_out(load_node, &arm_default_req_arm_general_purpose_r11, 0); - set_arm_req_out(load_node, &arm_default_req_arm_general_purpose_r13, 1); - set_arm_req_out(load_node, &arm_default_req_arm_general_purpose_r15, 2); - curr_bp = new_r_Proj(env->irg, bl, load_node, env->isa->bp->reg_class->mode, 0); - curr_sp = new_r_Proj(env->irg, bl, load_node, env->isa->sp->reg_class->mode, 1); - curr_pc = new_r_Proj(env->irg, bl, load_node, mode_Iu, 2); - *mem = new_r_Proj(env->irg, bl, load_node, mode_M, 3); + load_node = new_rd_arm_LoadStackM3( NULL, env->irg, bl, sub12_node, *mem ); + set_arm_req_out(load_node, &arm_default_req_arm_gp_r11, 0); + set_arm_req_out(load_node, &arm_default_req_arm_gp_sp, 1); + set_arm_req_out(load_node, &arm_default_req_arm_gp_pc, 2); + curr_bp = new_r_Proj(env->irg, bl, load_node, env->isa->bp->reg_class->mode, pn_arm_LoadStackM3_res0); + curr_sp = new_r_Proj(env->irg, bl, load_node, env->isa->sp->reg_class->mode, pn_arm_LoadStackM3_res1); + curr_pc = new_r_Proj(env->irg, bl, load_node, mode_Iu, pn_arm_LoadStackM3_res2); + *mem = new_r_Proj(env->irg, bl, load_node, mode_M, pn_arm_LoadStackM3_M); arch_set_irn_register(env->arch_env, curr_bp, env->isa->bp); arch_set_irn_register(env->arch_env, curr_sp, env->isa->sp); - arch_set_irn_register(env->arch_env, curr_pc, &arm_general_purpose_regs[REG_R15]); + arch_set_irn_register(env->arch_env, curr_pc, &arm_gp_regs[REG_PC]); } be_abi_reg_map_set(reg_map, env->isa->sp, curr_sp); be_abi_reg_map_set(reg_map, env->isa->bp, curr_bp); - be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R14], curr_lr); - be_abi_reg_map_set(reg_map, &arm_general_purpose_regs[REG_R15], curr_pc); + be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_LR], curr_lr); + be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_PC], curr_pc); } static const be_abi_callbacks_t arm_abi_callbacks = { @@ -887,13 +984,14 @@ void arm_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi ir_mode *mode; int i; int n = get_method_n_params(method_type); -// const arch_register_t *reg; be_abi_call_flags_t flags = { - 0, /* store from left to right */ - 0, /* store arguments sequential */ - 1, /* try to omit the frame pointer */ - 1, /* the function can use any register as frame pointer */ - 1 /* a call can take the callee's address as an immediate */ + { + 0, /* store from left to right */ + 0, /* store arguments sequential */ + 1, /* try to omit the frame pointer */ + 1, /* the function can use any register as frame pointer */ + 1 /* a call can take the callee's address as an immediate */ + } }; /* set stack parameter passing style */ @@ -916,7 +1014,7 @@ void arm_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi mode = get_type_mode(tp); be_abi_call_res_reg(abi, 0, - mode_is_float(mode) ? &arm_floating_point_regs[REG_F0] : &arm_general_purpose_regs[REG_R0]); + mode_is_float(mode) ? &arm_fpa_regs[REG_F0] : &arm_gp_regs[REG_R0]); } } @@ -954,16 +1052,77 @@ static const list_sched_selector_t *arm_get_list_sched_selector(const void *self return &arm_sched_selector; } +/** + * Returns the necessary byte alignment for storing a register of given class. + */ +static int arm_get_reg_class_alignment(const void *self, const arch_register_class_t *cls) { + ir_mode *mode = arch_register_class_mode(cls); + return get_mode_size_bytes(mode); +} + +/** + * Returns the libFirm configuration parameter for this backend. + */ +static const backend_params *arm_get_libfirm_params(void) { + static arch_dep_params_t ad = { + 1, /* allow subs */ + 0, /* Muls are fast enough on ARM */ + 31, /* shift would be ok */ + 0, /* SMUL is needed, only in Arch M*/ + 0, /* UMUL is needed, only in Arch M */ + 32, /* SMUL & UMUL available for 32 bit */ + }; + static backend_params p = { + NULL, /* no additional opcodes */ + NULL, /* will be set later */ + 1, /* need dword lowering */ + NULL, /* but yet no creator function */ + NULL, /* context for create_intrinsic_fkt */ + }; + + p.dep_param = &ad; + return &p; +} + #ifdef WITH_LIBCORE + +/* fpu set architectures. */ +static const lc_opt_enum_int_items_t arm_fpu_items[] = { + { "softfloat", ARM_FPU_ARCH_SOFTFLOAT }, + { "fpe", ARM_FPU_ARCH_FPE }, + { "fpa", ARM_FPU_ARCH_FPA }, + { "vfp1xd", ARM_FPU_ARCH_VFP_V1xD }, + { "vfp1", ARM_FPU_ARCH_VFP_V1 }, + { "vfp2", ARM_FPU_ARCH_VFP_V2 }, + { NULL, 0 } +}; + +static lc_opt_enum_int_var_t arch_fpu_var = { + &arm_isa_template.fpu_arch, arm_fpu_items +}; + +static const lc_opt_table_entry_t arm_options[] = { + LC_OPT_ENT_ENUM_INT("fpunit", "select the floating point unit", &arch_fpu_var), + LC_OPT_ENT_BOOL("gen_reg_names", "use generic register names", &arm_isa_template.gen_reg_names), + { NULL } +}; + +/** + * Register command line options for the ARM backend. + * + * Options so far: + * + * arm-fpuunit=unit select the floating point unit + * arm-gen_reg_names use generic register names instead of SP, LR, PC + */ static void arm_register_options(lc_opt_entry_t *ent) { + lc_opt_entry_t *be_grp_arm = lc_opt_get_grp(ent, "arm"); + lc_opt_add_table(be_grp_arm, arm_options); } #endif /* WITH_LIBCORE */ const arch_isa_if_t arm_isa_if = { -#ifdef WITH_LIBCORE - arm_register_options, -#endif arm_init, arm_done, arm_get_n_reg_class, @@ -973,4 +1132,9 @@ const arch_isa_if_t arm_isa_if = { arm_get_irn_handler, arm_get_code_generator_if, arm_get_list_sched_selector, + arm_get_reg_class_alignment, + arm_get_libfirm_params, +#ifdef WITH_LIBCORE + arm_register_options +#endif };