X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Farm%2Farm_emitter.c;h=de458a0f3832c945d6e6f67881167f4db0c3ecb1;hb=18011a85e62d81f6d8d08957192fa34d03b747c5;hp=471b24ffd6e4c9c287f60cf57caee056fceb9160;hpb=f0e95f8dffe90057f8e23ef73a68330c0580e640;p=libfirm diff --git a/ir/be/arm/arm_emitter.c b/ir/be/arm/arm_emitter.c index 471b24ffd..de458a0f3 100644 --- a/ir/be/arm/arm_emitter.c +++ b/ir/be/arm/arm_emitter.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved. + * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. * * This file is part of libFirm. * @@ -20,50 +20,56 @@ /** * @file * @brief arm emitter - * @author Oliver Richter, Tobias Gneist + * @author Oliver Richter, Tobias Gneist, Michael Beck * @version $Id$ */ -#define SILENCER - -#ifdef HAVE_CONFIG_H #include "config.h" -#endif #include +#include #include "xmalloc.h" #include "tv.h" #include "iredges.h" #include "debug.h" #include "irgwalk.h" +#include "irtools.h" #include "irprintf.h" #include "irop_t.h" #include "irprog_t.h" #include "irargs_t.h" #include "error.h" +#include "raw_bitset.h" +#include "dbginfo.h" #include "../besched.h" #include "../beblocksched.h" -#include "../beirg_t.h" +#include "../beirg.h" #include "../begnuas.h" +#include "../be_dbgout.h" #include "arm_emitter.h" +#include "arm_optimize.h" #include "gen_arm_emitter.h" #include "arm_nodes_attr.h" #include "arm_new_nodes.h" #include "arm_map_regs.h" #include "gen_arm_regalloc_if.h" -#include "../benode_t.h" +#include "../benode.h" #define SNPRINTF_BUF_LEN 128 -static const arch_env_t *arch_env = NULL; +DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;) + +static const arm_code_gen_t *cg; +static set *sym_or_tv; /** * Returns the register at in position pos. */ -static const arch_register_t *get_in_reg(const arch_env_t *arch_env, const ir_node *irn, int pos) { +static const arch_register_t *get_in_reg(const ir_node *irn, int pos) +{ ir_node *op; const arch_register_t *reg = NULL; @@ -73,9 +79,23 @@ static const arch_register_t *get_in_reg(const arch_env_t *arch_env, const ir_no in register we need. */ op = get_irn_n(irn, pos); - reg = arch_get_irn_register(arch_env, op); + reg = arch_get_irn_register(op); assert(reg && "no in register found"); + + /* in case of a joker register: just return a valid register */ + if (arch_register_type_is(reg, joker)) { + const arch_register_req_t *req = arch_get_register_req(irn, pos); + + if (arch_register_req_is(req, limited)) { + /* in case of limited requirements: get the first allowed register */ + unsigned idx = rbitset_next(req->limited, 0, 1); + reg = arch_register_for_index(req->cls, idx); + } else { + /* otherwise get first register in class */ + reg = arch_register_for_index(req->cls, 0); + } + } return reg; } @@ -83,8 +103,7 @@ static const arch_register_t *get_in_reg(const arch_env_t *arch_env, const ir_no /** * Returns the register at out position pos. */ -static const arch_register_t *get_out_reg(const arch_env_t *arch_env, - const ir_node *node, int pos) +static const arch_register_t *get_out_reg(const ir_node *node, int pos) { ir_node *proj; const arch_register_t *reg = NULL; @@ -95,9 +114,9 @@ static const arch_register_t *get_out_reg(const arch_env_t *arch_env, /* Proj with the corresponding projnum for the register */ if (get_irn_mode(node) != mode_T) { - reg = arch_get_irn_register(arch_env, node); + reg = arch_get_irn_register(node); } else if (is_arm_irn(node)) { - reg = get_arm_out_reg(node, pos); + reg = arch_irn_get_register(node, pos); } else { const ir_edge_t *edge; @@ -105,7 +124,7 @@ static const arch_register_t *get_out_reg(const arch_env_t *arch_env, proj = get_edge_src_irn(edge); assert(is_Proj(proj) && "non-Proj from mode_T node"); if (get_Proj_proj(proj) == pos) { - reg = arch_get_irn_register(arch_env, proj); + reg = arch_get_irn_register(proj); break; } } @@ -115,396 +134,556 @@ static const arch_register_t *get_out_reg(const arch_env_t *arch_env, return reg; } -/************************************************************* - * _ _ __ _ _ - * (_) | | / _| | | | | - * _ __ _ __ _ _ __ | |_| |_ | |__ ___| |_ __ ___ _ __ - * | '_ \| '__| | '_ \| __| _| | '_ \ / _ \ | '_ \ / _ \ '__| - * | |_) | | | | | | | |_| | | | | | __/ | |_) | __/ | - * | .__/|_| |_|_| |_|\__|_| |_| |_|\___|_| .__/ \___|_| - * | | | | - * |_| |_| - *************************************************************/ +void arm_emit_source_register(const ir_node *node, int pos) +{ + const arch_register_t *reg = get_in_reg(node, pos); + be_emit_string(arch_register_get_name(reg)); +} -/** - * Emits a block label from the given block. - */ -static void arm_emit_block_label(arm_emit_env_t *env, const ir_node *block) { - be_emit_irprintf(env->emit, "BLOCK_%u", get_irn_node_nr(block)); +void arm_emit_dest_register(const ir_node *node, int pos) +{ + const arch_register_t *reg = get_out_reg(node, pos); + be_emit_string(arch_register_get_name(reg)); } -/** - * Emit the name of the source register at given input position. - */ -void arm_emit_source_register(arm_emit_env_t *env, const ir_node *node, int pos) { - const arch_register_t *reg = get_in_reg(env->arch_env, node, pos); - be_emit_string(env->emit, arch_register_get_name(reg)); +void arm_emit_offset(const ir_node *node) +{ + const arm_load_store_attr_t *attr = get_arm_load_store_attr_const(node); + assert(attr->base.is_load_store); + + be_emit_irprintf("0x%X", attr->offset); } /** - * Emit the name of the destination register at given output position. + * Emit the arm fpa instruction suffix depending on the mode. */ -void arm_emit_dest_register(arm_emit_env_t *env, const ir_node *node, int pos) { - const arch_register_t *reg = get_out_reg(env->arch_env, node, pos); - be_emit_string(env->emit, arch_register_get_name(reg)); +static void arm_emit_fpa_postfix(const ir_mode *mode) +{ + int bits = get_mode_size_bits(mode); + char c = 'e'; + + if (bits == 32) + c = 's'; + else if (bits == 64) + c = 'd'; + be_emit_char(c); } -/** - * Emit a node's offset. - */ -void arm_emit_offset(arm_emit_env_t *env, const ir_node *node) { - int offset = 0; - ir_op *irn_op = get_irn_op(node); - - if (irn_op == op_be_StackParam) { - ir_entity *ent = be_get_frame_entity(node); - offset = get_entity_offset(ent); - } else if (irn_op == op_be_Reload || irn_op == op_be_Spill) { - ir_entity *ent = be_get_frame_entity(node); - offset = get_entity_offset(ent); - } else if (irn_op == op_be_IncSP) { - offset = - be_get_IncSP_offset(node); - } else { - assert(!"unimplemented arm_emit_offset for this node type"); - panic("unimplemented arm_emit_offset for this node type"); - } - be_emit_irprintf(env->emit, "%d", offset); +void arm_emit_float_load_store_mode(const ir_node *node) +{ + const arm_load_store_attr_t *attr = get_arm_load_store_attr_const(node); + arm_emit_fpa_postfix(attr->load_store_mode); } -/** - * Emit the instruction suffix depending on the mode. - */ -void arm_emit_mode(arm_emit_env_t *env, const ir_node *node) { - arm_attr_t *attr; - ir_mode *mode; - int bits; +void arm_emit_float_arithmetic_mode(const ir_node *node) +{ + const arm_farith_attr_t *attr = get_arm_farith_attr_const(node); + arm_emit_fpa_postfix(attr->mode); +} - attr = get_arm_attr(node); - mode = attr->op_mode ? attr->op_mode : get_irn_mode(node); - bits = get_mode_size_bits(mode); +void arm_emit_symconst(const ir_node *node) +{ + const arm_SymConst_attr_t *symconst = get_arm_SymConst_attr_const(node); + ir_entity *entity = symconst->entity; - if (bits == 32) - be_emit_char(env->emit, 's'); - else if (bits == 64) - be_emit_char(env->emit, 'd'); - else - be_emit_char(env->emit, 'e'); + be_gas_emit_entity(entity); + + /* TODO do something with offset */ } +void arm_emit_load_mode(const ir_node *node) +{ + const arm_load_store_attr_t *attr = get_arm_load_store_attr_const(node); + ir_mode *mode = attr->load_store_mode; + int bits = get_mode_size_bits(mode); + bool is_signed = mode_is_signed(mode); + if (bits == 16) { + be_emit_string(is_signed ? "sh" : "h"); + } else if (bits == 8) { + be_emit_string(is_signed ? "sb" : "b"); + } else { + assert(bits == 32); + } +} -/** - * Returns non-zero if a mode has a Immediate attribute. - */ -int is_immediate_node(const ir_node *irn) { - arm_attr_t *attr = get_arm_attr(irn); - return ARM_GET_SHF_MOD(attr) == ARM_SHF_IMM; +void arm_emit_store_mode(const ir_node *node) +{ + const arm_load_store_attr_t *attr = get_arm_load_store_attr_const(node); + ir_mode *mode = attr->load_store_mode; + int bits = get_mode_size_bits(mode); + if (bits == 16) { + be_emit_cstring("h"); + } else if (bits == 8) { + be_emit_cstring("b"); + } else { + assert(bits == 32); + } } -/** - * Emit a const or SymConst value. - */ -void arm_emit_immediate(arm_emit_env_t *env, const ir_node *node) { - if (is_immediate_node(node)) { - be_emit_irprintf(env->emit, "#0x%X", arm_decode_imm_w_shift(get_arm_value(node))); - } else if (is_arm_SymConst(node)) - be_emit_string(env->emit, get_arm_symconst_label(node)); - else { - assert(!"not a Constant"); +static void emit_shf_mod_name(arm_shift_modifier_t mod) +{ + switch (mod) { + case ARM_SHF_ASR_REG: + case ARM_SHF_ASR_IMM: + be_emit_cstring("asr"); + return; + case ARM_SHF_LSL_REG: + case ARM_SHF_LSL_IMM: + be_emit_cstring("lsl"); + return; + case ARM_SHF_LSR_REG: + case ARM_SHF_LSR_IMM: + be_emit_cstring("lsr"); + return; + case ARM_SHF_ROR_REG: + case ARM_SHF_ROR_IMM: + be_emit_cstring("ror"); + return; + default: + break; } + panic("can't emit this shf_mod_name %d", (int) mod); } -/** - * Returns the tarval or offset of an arm node as a string. - */ -void arm_emit_shift(arm_emit_env_t *env, const ir_node *node) { - arm_shift_modifier mod; +void arm_emit_shifter_operand(const ir_node *node) +{ + const arm_shifter_operand_t *attr = get_irn_generic_attr_const(node); + + switch (attr->shift_modifier) { + case ARM_SHF_REG: + arm_emit_source_register(node, get_irn_arity(node) - 1); + return; + case ARM_SHF_IMM: { + unsigned val = attr->immediate_value; + val = (val >> attr->shift_immediate) + | (val << (32-attr->shift_immediate)); + val &= 0xFFFFFFFF; + be_emit_irprintf("#0x%X", val); + return; + } + case ARM_SHF_ASR_IMM: + case ARM_SHF_LSL_IMM: + case ARM_SHF_LSR_IMM: + case ARM_SHF_ROR_IMM: + arm_emit_source_register(node, get_irn_arity(node) - 1); + be_emit_cstring(", "); + emit_shf_mod_name(attr->shift_modifier); + be_emit_irprintf(" #0x%X", attr->shift_immediate); + return; - mod = get_arm_shift_modifier(node); - if (ARM_HAS_SHIFT(mod)) { - long v = get_tarval_long(get_arm_value(node)); + case ARM_SHF_ASR_REG: + case ARM_SHF_LSL_REG: + case ARM_SHF_LSR_REG: + case ARM_SHF_ROR_REG: + arm_emit_source_register(node, get_irn_arity(node) - 2); + be_emit_cstring(", "); + emit_shf_mod_name(attr->shift_modifier); + be_emit_cstring(" "); + arm_emit_source_register(node, get_irn_arity(node) - 1); + return; + + case ARM_SHF_RRX: + arm_emit_source_register(node, get_irn_arity(node) - 1); + panic("RRX shifter emitter TODO"); - be_emit_irprintf(env->emit, ", %s #%ld", arm_shf_mod_name(mod), v); + case ARM_SHF_INVALID: + break; } + panic("Invalid shift_modifier while emitting %+F", node); } +/** An entry in the sym_or_tv set. */ +typedef struct sym_or_tv_t { + union { + ir_entity *entity; /**< An entity. */ + tarval *tv; /**< A tarval. */ + const void *generic; /**< For generic compare. */ + } u; + unsigned label; /**< the associated label. */ + bool is_entity; /**< true if an entity is stored. */ +} sym_or_tv_t; + /** * Returns a unique label. This number will not be used a second time. */ -static unsigned get_unique_label(void) { +static unsigned get_unique_label(void) +{ static unsigned id = 0; return ++id; } +static void emit_constant_name(const sym_or_tv_t *entry) +{ + be_emit_irprintf("%sC%u", be_gas_get_private_prefix(), entry->label); +} + /** * Emit a SymConst. */ -static void emit_arm_SymConst(arm_emit_env_t *env, const ir_node *irn) { - SymConstEntry *entry = obstack_alloc(&env->obst, sizeof(*entry)); - - /* allocate a new symbol entry */ - entry->label = get_unique_label(); - entry->symconst = irn; - entry->next = env->symbols; - env->symbols = entry; +static void emit_arm_SymConst(const ir_node *irn) +{ + const arm_SymConst_attr_t *attr = get_arm_SymConst_attr_const(irn); + sym_or_tv_t key, *entry; + unsigned label; + + key.u.entity = attr->entity; + key.is_entity = true; + key.label = 0; + entry = (sym_or_tv_t *)set_insert(sym_or_tv, &key, sizeof(key), HASH_PTR(key.u.generic)); + if (entry->label == 0) { + /* allocate a label */ + entry->label = get_unique_label(); + } + label = entry->label; /* load the symbol indirect */ - be_emit_cstring(env->emit, "\tldr "); - arm_emit_dest_register(env, irn, 0); - be_emit_irprintf(env->emit, ", .L%u", entry->label); - be_emit_finish_line_gas(env->emit, irn); + be_emit_cstring("\tldr "); + arm_emit_dest_register(irn, 0); + be_emit_cstring(", "); + emit_constant_name(entry); + be_emit_finish_line_gas(irn); +} + +static void emit_arm_FrameAddr(const ir_node *irn) +{ + const arm_SymConst_attr_t *attr = get_irn_generic_attr_const(irn); + + be_emit_cstring("\tadd "); + arm_emit_dest_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + be_emit_irprintf("#0x%X", attr->fp_offset); + be_emit_finish_line_gas(irn); +} + +/** + * Emit a floating point fpa constant. + */ +static void emit_arm_fConst(const ir_node *irn) +{ + sym_or_tv_t key, *entry; + unsigned label; + ir_mode *mode; + + key.u.tv = get_fConst_value(irn); + key.is_entity = false; + key.label = 0; + entry = (sym_or_tv_t *)set_insert(sym_or_tv, &key, sizeof(key), HASH_PTR(key.u.generic)); + if (entry->label == 0) { + /* allocate a label */ + entry->label = get_unique_label(); + } + label = entry->label; + + /* load the tarval indirect */ + mode = get_irn_mode(irn); + be_emit_cstring("\tldf"); + arm_emit_fpa_postfix(mode); + be_emit_char(' '); + + arm_emit_dest_register(irn, 0); + be_emit_cstring(", "); + emit_constant_name(entry); + be_emit_finish_line_gas(irn); } /** * Returns the next block in a block schedule. */ -static ir_node *sched_next_block(ir_node *block) { +static ir_node *sched_next_block(const ir_node *block) +{ return get_irn_link(block); } /** - * Emit a conditional jump. + * Returns the target block for a control flow node. + */ +static ir_node *get_cfop_target_block(const ir_node *irn) +{ + return get_irn_link(irn); +} + +/** + * Emit the target label for a control flow node. + */ +static void arm_emit_cfop_target(const ir_node *irn) +{ + ir_node *block = get_cfop_target_block(irn); + + be_gas_emit_block_name(block); +} + +/** + * Emit a Compare with conditional branch. */ -static void emit_arm_CondJmp(arm_emit_env_t *env, const ir_node *irn) { +static void emit_arm_B(const ir_node *irn) +{ const ir_edge_t *edge; - ir_node *true_block = NULL; - ir_node *false_block = NULL; + const ir_node *proj_true = NULL; + const ir_node *proj_false = NULL; + const ir_node *block; + const ir_node *next_block; ir_node *op1 = get_irn_n(irn, 0); - ir_mode *opmode = get_irn_mode(op1); const char *suffix; - int proj_num = get_arm_proj_num(irn); + pn_Cmp pnc = get_arm_CondJmp_pnc(irn); + const arm_cmp_attr_t *cmp_attr = get_irn_generic_attr_const(op1); + bool is_signed = !cmp_attr->is_unsigned; + + assert(is_arm_Cmp(op1) || is_arm_Tst(op1)); foreach_out_edge(irn, edge) { ir_node *proj = get_edge_src_irn(edge); long nr = get_Proj_proj(proj); - ir_node *block = get_irn_link(proj); if (nr == pn_Cond_true) { - true_block = block; + proj_true = proj; } else { - false_block = block; + proj_false = proj; } } - if (proj_num == pn_Cmp_False) { - /* always false: should not happen */ - be_emit_cstring(env->emit, "\tb "); - arm_emit_block_label(env, false_block); - be_emit_finish_line_gas(env->emit, irn); - } else if (proj_num == pn_Cmp_True) { - /* always true: should not happen */ - be_emit_cstring(env->emit, "\tb "); - arm_emit_block_label(env, true_block); - be_emit_finish_line_gas(env->emit, irn); - } else { - ir_node *block = get_nodes_block(irn); + if (cmp_attr->ins_permuted) { + pnc = get_mirrored_pnc(pnc); + } - if (mode_is_float(opmode)) { - suffix = "ICHWILLIMPLEMENTIERTWERDEN"; + /* for now, the code works for scheduled and non-schedules blocks */ + block = get_nodes_block(irn); - be_emit_cstring(env->emit, "\tfcmp "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 1); - be_emit_finish_line_gas(env->emit, irn); + /* we have a block schedule */ + next_block = sched_next_block(block); - be_emit_cstring(env->emit, "\tfmstat"); - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* FCSPR -> CPSR */"); - be_emit_finish_line_gas(env->emit, NULL); - } else { - if (true_block == sched_next_block(block)) { - /* negate it */ - proj_num = get_negated_pnc(proj_num, opmode); - } - switch (proj_num) { - case pn_Cmp_Eq: suffix = "eq"; break; - case pn_Cmp_Lt: suffix = "lt"; break; - case pn_Cmp_Le: suffix = "le"; break; - case pn_Cmp_Gt: suffix = "gt"; break; - case pn_Cmp_Ge: suffix = "ge"; break; - case pn_Cmp_Lg: suffix = "ne"; break; - case pn_Cmp_Leg: suffix = "al"; break; - default: assert(!"Cmp unsupported"); suffix = "al"; - } - be_emit_cstring(env->emit, "\tcmp "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 1); - be_emit_finish_line_gas(env->emit, irn); - } + assert(pnc != pn_Cmp_False); + assert(pnc != pn_Cmp_True); - if (true_block == sched_next_block(block)) { - be_emit_irprintf(env->emit, "\tb%s", suffix); - arm_emit_block_label(env, true_block); - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* false case */"); - be_emit_finish_line_gas(env->emit, NULL); - - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* fallthrough "); - arm_emit_block_label(env, false_block); - be_emit_cstring(env->emit, " */"); - be_emit_finish_line_gas(env->emit, NULL); - } else { - be_emit_irprintf(env->emit, "\tb%s", suffix); - arm_emit_block_label(env, true_block); - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* true case */"); - be_emit_finish_line_gas(env->emit, NULL); - - if (false_block == sched_next_block(block)) { - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* fallthrough "); - arm_emit_block_label(env, false_block); - be_emit_cstring(env->emit, " */"); - be_emit_finish_line_gas(env->emit, NULL); - } else { - be_emit_cstring(env->emit, "b "); - arm_emit_block_label(env, false_block); - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* false case */"); - be_emit_finish_line_gas(env->emit, NULL); - } - } + if (get_cfop_target_block(proj_true) == next_block) { + /* exchange both proj's so the second one can be omitted */ + const ir_node *t = proj_true; + + proj_true = proj_false; + proj_false = t; + pnc = get_negated_pnc(pnc, mode_Iu); + } + + switch (pnc) { + case pn_Cmp_Eq: suffix = "eq"; break; + case pn_Cmp_Lt: suffix = is_signed ? "lt" : "lo"; break; + case pn_Cmp_Le: suffix = is_signed ? "le" : "ls"; break; + case pn_Cmp_Gt: suffix = is_signed ? "gt" : "hi"; break; + case pn_Cmp_Ge: suffix = is_signed ? "ge" : "hs"; break; + case pn_Cmp_Lg: suffix = "ne"; break; + case pn_Cmp_Leg: suffix = "al"; break; + default: panic("Cmp has unsupported pnc"); + } + + /* emit the true proj */ + be_emit_irprintf("\tb%s ", suffix); + arm_emit_cfop_target(proj_true); + be_emit_finish_line_gas(proj_true); + + if (get_cfop_target_block(proj_false) == next_block) { + be_emit_cstring("\t/* fallthrough to "); + arm_emit_cfop_target(proj_false); + be_emit_cstring(" */"); + be_emit_finish_line_gas(proj_false); + } else { + be_emit_cstring("\tb "); + arm_emit_cfop_target(proj_false); + be_emit_finish_line_gas(proj_false); } } +/** Sort register in ascending order. */ +static int reg_cmp(const void *a, const void *b) +{ + const arch_register_t * const *ra = a; + const arch_register_t * const *rb = b; + + return *ra < *rb ? -1 : (*ra != *rb); +} + /** * Create the CopyB instruction sequence. */ -static void emit_arm_CopyB(arm_emit_env_t *env, const ir_node *irn) { - unsigned int size = get_tarval_long(get_arm_value(irn)); - - be_emit_cstring(env->emit, "/* MemCopy ("); - arm_emit_source_register(env, irn, 1); - be_emit_cstring(env->emit, ")->("); - arm_emit_source_register(env, irn, 0); - be_emit_irprintf(env->emit, " [%d bytes], Uses ", size); - arm_emit_source_register(env, irn, 2); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 3); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 4); - be_emit_cstring(env->emit, ", and %r12 */"); - be_emit_finish_line_gas(env->emit, NULL); - - assert ( size > 0 && "CopyB needs size > 0" ); - if (size & 3) +static void emit_arm_CopyB(const ir_node *irn) +{ + const arm_CopyB_attr_t *attr = get_irn_generic_attr_const(irn); + unsigned size = attr->size; + + const char *tgt = arch_register_get_name(get_in_reg(irn, 0)); + const char *src = arch_register_get_name(get_in_reg(irn, 1)); + const char *t0, *t1, *t2, *t3; + + const arch_register_t *tmpregs[4]; + + /* collect the temporary registers and sort them, we need ascending order */ + tmpregs[0] = get_in_reg(irn, 2); + tmpregs[1] = get_in_reg(irn, 3); + tmpregs[2] = get_in_reg(irn, 4); + tmpregs[3] = &arm_gp_regs[REG_R12]; + + /* Note: R12 is always the last register because the RA did not assign higher ones */ + qsort((void *)tmpregs, 3, sizeof(tmpregs[0]), reg_cmp); + + /* need ascending order */ + t0 = arch_register_get_name(tmpregs[0]); + t1 = arch_register_get_name(tmpregs[1]); + t2 = arch_register_get_name(tmpregs[2]); + t3 = arch_register_get_name(tmpregs[3]); + + be_emit_cstring("/* MemCopy ("); + be_emit_string(src); + be_emit_cstring(")->("); + arm_emit_source_register(irn, 0); + be_emit_irprintf(" [%u bytes], Uses ", size); + be_emit_string(t0); + be_emit_cstring(", "); + be_emit_string(t1); + be_emit_cstring(", "); + be_emit_string(t2); + be_emit_cstring(", and "); + be_emit_string(t3); + be_emit_cstring("*/"); + be_emit_finish_line_gas(NULL); + + assert(size > 0 && "CopyB needs size > 0" ); + + if (size & 3) { + fprintf(stderr, "strange hack enabled: copy more bytes than needed!"); size += 4; + } + size >>= 2; - switch(size & 3) { + switch (size & 3) { case 0: break; case 1: - be_emit_cstring(env->emit, "\tldr %%r12, ["); - arm_emit_source_register(env, irn, 1); - be_emit_cstring(env->emit, ", #0]!"); - be_emit_finish_line_gas(env->emit, NULL); - - be_emit_cstring(env->emit, "\tstr %%r12, ["); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", #0]!"); - be_emit_finish_line_gas(env->emit, irn); + be_emit_cstring("\tldr "); + be_emit_string(t3); + be_emit_cstring(", ["); + be_emit_string(src); + be_emit_cstring(", #0]"); + be_emit_finish_line_gas(NULL); + + be_emit_cstring("\tstr "); + be_emit_string(t3); + be_emit_cstring(", ["); + be_emit_string(tgt); + be_emit_cstring(", #0]"); + be_emit_finish_line_gas(irn); break; case 2: - be_emit_cstring(env->emit, "\tldmia "); - arm_emit_source_register(env, irn, 1); - be_emit_cstring(env->emit, "!, {%r12, "); - arm_emit_source_register(env, irn, 2); - be_emit_char(env->emit, '}'); - be_emit_finish_line_gas(env->emit, NULL); - - be_emit_cstring(env->emit, "\tstmia "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, "!, {%r12, "); - arm_emit_source_register(env, irn, 2); - be_emit_char(env->emit, '}'); - be_emit_finish_line_gas(env->emit, irn); + be_emit_cstring("\tldmia "); + be_emit_string(src); + be_emit_cstring("!, {"); + be_emit_string(t0); + be_emit_cstring(", "); + be_emit_string(t1); + be_emit_char('}'); + be_emit_finish_line_gas(NULL); + + be_emit_cstring("\tstmia "); + be_emit_string(tgt); + be_emit_cstring("!, {"); + be_emit_string(t0); + be_emit_cstring(", "); + be_emit_string(t1); + be_emit_char('}'); + be_emit_finish_line_gas(irn); break; case 3: - be_emit_cstring(env->emit, "\tldmia "); - arm_emit_source_register(env, irn, 1); - be_emit_cstring(env->emit, "!, {%r12, "); - arm_emit_source_register(env, irn, 2); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 3); - be_emit_char(env->emit, '}'); - be_emit_finish_line_gas(env->emit, NULL); - - be_emit_cstring(env->emit, "\tstmia "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, "!, {%r12, "); - arm_emit_source_register(env, irn, 2); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 3); - be_emit_char(env->emit, '}'); - be_emit_finish_line_gas(env->emit, irn); + be_emit_cstring("\tldmia "); + be_emit_string(src); + be_emit_cstring("!, {"); + be_emit_string(t0); + be_emit_cstring(", "); + be_emit_string(t1); + be_emit_cstring(", "); + be_emit_string(t2); + be_emit_char('}'); + be_emit_finish_line_gas(NULL); + + be_emit_cstring("\tstmia "); + be_emit_string(tgt); + be_emit_cstring("!, {"); + be_emit_string(t0); + be_emit_cstring(", "); + be_emit_string(t1); + be_emit_cstring(", "); + be_emit_string(t2); + be_emit_char('}'); + be_emit_finish_line_gas(irn); break; } size >>= 2; while (size) { - be_emit_cstring(env->emit, "\tldmia "); - arm_emit_source_register(env, irn, 1); - be_emit_cstring(env->emit, "!, {%r12, "); - arm_emit_source_register(env, irn, 2); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 3); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 4); - be_emit_char(env->emit, '}'); - be_emit_finish_line_gas(env->emit, NULL); - - be_emit_cstring(env->emit, "\tstmia "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, "!, {%r12, "); - arm_emit_source_register(env, irn, 2); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 3); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 4); - be_emit_char(env->emit, '}'); - be_emit_finish_line_gas(env->emit, irn); + be_emit_cstring("\tldmia "); + be_emit_string(src); + be_emit_cstring("!, {"); + be_emit_string(t0); + be_emit_cstring(", "); + be_emit_string(t1); + be_emit_cstring(", "); + be_emit_string(t2); + be_emit_cstring(", "); + be_emit_string(t3); + be_emit_char('}'); + be_emit_finish_line_gas(NULL); + + be_emit_cstring("\tstmia "); + be_emit_string(tgt); + be_emit_cstring("!, {"); + be_emit_string(t0); + be_emit_cstring(", "); + be_emit_string(t1); + be_emit_cstring(", "); + be_emit_string(t2); + be_emit_cstring(", "); + be_emit_string(t3); + be_emit_char('}'); + be_emit_finish_line_gas(irn); --size; } } -static void emit_arm_SwitchJmp(arm_emit_env_t *env, const ir_node *irn) { +static void emit_arm_SwitchJmp(const ir_node *irn) +{ const ir_edge_t *edge; ir_node *proj; int i; ir_node **projs; int n_projs; int block_nr; - ir_node *default_block = NULL; + ir_node *default_proj = NULL; block_nr = get_irn_node_nr(irn); - n_projs = get_arm_n_projs(irn); + n_projs = get_arm_SwitchJmp_n_projs(irn); - projs = xcalloc(n_projs , sizeof(ir_node*)); + projs = XMALLOCNZ(ir_node*, n_projs); foreach_out_edge(irn, edge) { proj = get_edge_src_irn(edge); assert(is_Proj(proj) && "Only proj allowed at SwitchJmp"); - if (get_Proj_proj(proj) == get_arm_default_proj_num(irn)) - default_block = get_irn_link(proj); + if (get_Proj_proj(proj) == get_arm_SwitchJmp_default_proj_num(irn)) + default_proj = proj; projs[get_Proj_proj(proj)] = proj; } - assert(default_block != NULL); + assert(default_proj != NULL && "SwitchJmp should have a Default Proj"); /* CMP %1S, n_projs - 1 BHI default */ - be_emit_cstring(env->emit, "\tcmp "); - arm_emit_source_register(env, irn, 0); - be_emit_irprintf(env->emit, ", #%u", n_projs - 1); - be_emit_finish_line_gas(env->emit, irn); + be_emit_cstring("\tcmp "); + arm_emit_source_register(irn, 0); + be_emit_irprintf(", #%u", n_projs - 1); + be_emit_finish_line_gas(irn); - be_emit_cstring(env->emit, "\tbhi "); - arm_emit_block_label(env, default_block); - be_emit_finish_line_gas(env->emit, NULL); + be_emit_cstring("\tbhi "); + arm_emit_cfop_target(default_proj); + be_emit_finish_line_gas(default_proj); /* LDR %r12, .TABLE_X_START @@ -512,270 +691,204 @@ static void emit_arm_SwitchJmp(arm_emit_env_t *env, const ir_node *irn) { LDR %r15, %r12 */ - be_emit_irprintf(env->emit, "\tldr %%r12, TABLE_%d_START", block_nr); - be_emit_finish_line_gas(env->emit, NULL); + be_emit_irprintf("\tldr %%r12, TABLE_%d_START", block_nr); + be_emit_finish_line_gas(NULL); - be_emit_irprintf(env->emit, "\tadd %%r12, %%r12, "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", LSL #2"); - be_emit_finish_line_gas(env->emit, NULL); + be_emit_irprintf("\tadd %%r12, %%r12, "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", LSL #2"); + be_emit_finish_line_gas(NULL); - be_emit_cstring(env->emit, "\tldr %r15, [%r12, #0]"); - be_emit_finish_line_gas(env->emit, NULL); + be_emit_cstring("\tldr %r15, [%r12, #0]"); + be_emit_finish_line_gas(NULL); - be_emit_irprintf(env->emit, "TABLE_%d_START:\n\t.word\tTABLE_%d", block_nr, block_nr); - be_emit_finish_line_gas(env->emit, NULL); - be_emit_irprintf(env->emit, "\t.align 2"); - be_emit_finish_line_gas(env->emit, NULL); - be_emit_irprintf(env->emit, "TABLE_%d:", block_nr); - be_emit_finish_line_gas(env->emit, NULL); + be_emit_irprintf("TABLE_%d_START:\n\t.word\tTABLE_%d", block_nr, block_nr); + be_emit_finish_line_gas(NULL); + be_emit_irprintf("\t.align 2"); + be_emit_finish_line_gas(NULL); + be_emit_irprintf("TABLE_%d:", block_nr); + be_emit_finish_line_gas(NULL); for (i = 0; i < n_projs; ++i) { - ir_node *block; proj = projs[i]; - if ( proj ) { - block = get_irn_link(proj); - } else { - block = get_irn_link(projs[get_arm_default_proj_num(irn)]); + if (proj == NULL) { + proj = projs[get_arm_SwitchJmp_default_proj_num(irn)]; } - be_emit_cstring(env->emit, "\t.word\t"); - arm_emit_block_label(env, block); - be_emit_finish_line_gas(env->emit, NULL); + be_emit_cstring("\t.word\t"); + arm_emit_cfop_target(proj); + be_emit_finish_line_gas(proj); } - be_emit_irprintf(env->emit, "\t.align 2\n"); - be_emit_finish_line_gas(env->emit, NULL); + be_emit_irprintf("\t.align 2\n"); + be_emit_finish_line_gas(NULL); xfree(projs); } -/************************************************************************/ -/* emit_be */ -/************************************************************************/ - -static void emit_be_Call(arm_emit_env_t *env, const ir_node *irn) { - ir_entity *ent = be_Call_get_entity(irn); - - be_emit_cstring(env->emit, "\tbl "); - if (ent) { - mark_entity_visited(ent); - be_emit_ident(env->emit, get_entity_ld_ident(ent)); - } else { - arm_emit_source_register(env, irn, be_pos_Call_ptr); - } - be_emit_finish_line_gas(env->emit, irn); -} - /** Emit an IncSP node */ -static void emit_be_IncSP(arm_emit_env_t *env, const ir_node *irn) { - int offs = be_get_IncSP_offset(irn); +static void emit_be_IncSP(const ir_node *irn) +{ + int offs = -be_get_IncSP_offset(irn); if (offs != 0) { - be_emit_cstring(env->emit, "\tadd "); - arm_emit_dest_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", #"); - arm_emit_offset(env, irn); + if (offs < 0) { + be_emit_cstring("\tsub "); + offs = -offs; + } else { + be_emit_cstring("\tadd "); + } + arm_emit_dest_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_irprintf(", #0x%X", offs); } else { - be_emit_cstring(env->emit, "\t/* omitted IncSP("); - arm_emit_offset(env, irn); - be_emit_cstring(env->emit,") */"); + /* omitted IncSP(0) */ + return; } - be_emit_finish_line_gas(env->emit, irn); + be_emit_finish_line_gas(irn); } -static void emit_be_Copy(arm_emit_env_t *env, const ir_node *irn) { +static void emit_be_Copy(const ir_node *irn) +{ ir_mode *mode = get_irn_mode(irn); - if (get_in_reg(env->arch_env, irn, 0) == get_out_reg(env->arch_env, irn, 0)) { - be_emit_cstring(env->emit, "\t/* omitted Copy: "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, " -> "); - arm_emit_dest_register(env, irn, 0); - be_emit_finish_line_gas(env->emit, irn); + if (get_in_reg(irn, 0) == get_out_reg(irn, 0)) { + /* omitted Copy */ return; } if (mode_is_float(mode)) { - if (USE_FPA(env->cg->isa)) { - be_emit_cstring(env->emit, "\tmvf"); - arm_emit_mode(env, irn); - be_emit_char(env->emit, ' '); - arm_emit_dest_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 0); - be_emit_finish_line_gas(env->emit, irn); + if (USE_FPA(cg->isa)) { + be_emit_cstring("\tmvf"); + be_emit_char(' '); + arm_emit_dest_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_finish_line_gas(irn); } else { - assert(0 && "move not supported for this mode"); panic("emit_be_Copy: move not supported for this mode"); } - } else if (mode_is_numP(mode)) { - be_emit_cstring(env->emit, "\tmov "); - arm_emit_dest_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 0); - be_emit_finish_line_gas(env->emit, irn); + } else if (mode_is_data(mode)) { + be_emit_cstring("\tmov "); + arm_emit_dest_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_finish_line_gas(irn); } else { - assert(0 && "move not supported for this mode"); panic("emit_be_Copy: move not supported for this mode"); } } -/** - * Emit code for a Spill. - */ -static void emit_be_Spill(arm_emit_env_t *env, const ir_node *irn) { - ir_mode *mode = get_irn_mode(irn); +static void emit_be_Perm(const ir_node *irn) +{ + be_emit_cstring("\teor "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 1); + be_emit_finish_line_gas(NULL); + + be_emit_cstring("\teor "); + arm_emit_source_register(irn, 1); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 1); + be_emit_finish_line_gas(NULL); + + be_emit_cstring("\teor "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 1); + be_emit_finish_line_gas(irn); +} - if (mode_is_float(mode)) { - if (USE_FPA(env->cg->isa)) { - be_emit_cstring(env->emit, "\tstf "); - } else { - assert(0 && "spill not supported for this mode"); - panic("emit_be_Spill: spill not supported for this mode"); - } - } else if (mode_is_dataM(mode)) { - be_emit_cstring(env->emit, "\tstr "); - } else { - assert(0 && "spill not supported for this mode"); - panic("emit_be_Spill: spill not supported for this mode"); +static void emit_be_MemPerm(const ir_node *node) +{ + int i; + int memperm_arity; + int sp_change = 0; + + /* TODO: this implementation is slower than necessary. + The longterm goal is however to avoid the memperm node completely */ + + memperm_arity = be_get_MemPerm_entity_arity(node); + if (memperm_arity > 12) + panic("memperm with more than 12 inputs not supported yet"); + + for (i = 0; i < memperm_arity; ++i) { + int offset; + ir_entity *entity = be_get_MemPerm_in_entity(node, i); + + /* spill register */ + be_emit_irprintf("\tstr r%d, [sp, #-4]!", i); + be_emit_finish_line_gas(node); + sp_change += 4; + /* load from entity */ + offset = get_entity_offset(entity) + sp_change; + be_emit_irprintf("\tldr r%d, [sp, #%d]", i, offset); + be_emit_finish_line_gas(node); + } + + for (i = memperm_arity-1; i >= 0; --i) { + int offset; + ir_entity *entity = be_get_MemPerm_out_entity(node, i); + + /* store to new entity */ + offset = get_entity_offset(entity) + sp_change; + be_emit_irprintf("\tstr r%d, [sp, #%d]", i, offset); + be_emit_finish_line_gas(node); + /* restore register */ + be_emit_irprintf("\tldr r%d, [sp], #4", i); + sp_change -= 4; + be_emit_finish_line_gas(node); } - arm_emit_source_register(env, irn, 1); - be_emit_cstring(env->emit, ", ["); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", #"); - arm_emit_offset(env, irn); - be_emit_char(env->emit, ']'); - be_emit_finish_line_gas(env->emit, irn); + assert(sp_change == 0); } -/** - * Emit code for a Reload. - */ -static void emit_be_Reload(arm_emit_env_t *env, const ir_node *irn) { - ir_mode *mode = get_irn_mode(irn); +static void emit_be_Return(const ir_node *node) +{ + be_emit_cstring("\tmov pc, lr"); + be_emit_finish_line_gas(node); +} - if (mode_is_float(mode)) { - if (USE_FPA(env->cg->isa)) { - be_emit_cstring(env->emit, "\tldf "); - } else { - assert(0 && "reload not supported for this mode"); - panic("emit_be_Reload: reload not supported for this mode"); - } - } else if (mode_is_dataM(mode)) { - be_emit_cstring(env->emit, "\tldr "); - } else { - assert(0 && "reload not supported for this mode"); - panic("emit_be_Reload: reload not supported for this mode"); - } - arm_emit_dest_register(env, irn, 0); - be_emit_cstring(env->emit, ", ["); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", #"); - arm_emit_offset(env, irn); - be_emit_char(env->emit, ']'); - be_emit_finish_line_gas(env->emit, irn); -} - -static void emit_be_Perm(arm_emit_env_t *env, const ir_node *irn) { - be_emit_cstring(env->emit, "\teor "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 1); - be_emit_finish_line_gas(env->emit, NULL); - - be_emit_cstring(env->emit, "\teor "); - arm_emit_source_register(env, irn, 1); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 1); - be_emit_finish_line_gas(env->emit, NULL); - - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", "); - arm_emit_source_register(env, irn, 1); - be_emit_finish_line_gas(env->emit, irn); -} - -static void emit_be_StackParam(arm_emit_env_t *env, const ir_node *irn) { - ir_mode *mode = get_irn_mode(irn); - if (mode_is_float(mode)) { - if (USE_FPA(env->cg->isa)) { - be_emit_cstring(env->emit,"\tldf "); - } else { - assert(0 && "stackparam not supported for this mode"); - panic("emit_be_StackParam: stackparam not supported for this mode"); - } +static void emit_arm_Jmp(const ir_node *node) +{ + ir_node *block, *next_block; + + /* for now, the code works for scheduled and non-schedules blocks */ + block = get_nodes_block(node); + + /* we have a block schedule */ + next_block = sched_next_block(block); + if (get_cfop_target_block(node) != next_block) { + be_emit_cstring("\tb "); + arm_emit_cfop_target(node); } else { - be_emit_cstring(env->emit,"\tldr "); - } - arm_emit_dest_register(env, irn, 0); - be_emit_cstring(env->emit, ", ["); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit,", #"); - arm_emit_offset(env, irn); - be_emit_finish_line_gas(env->emit, irn); -} - -/************************************************************************/ -/* emit */ -/************************************************************************/ - -static void emit_Jmp(arm_emit_env_t *env, const ir_node *irn) { - const ir_edge_t *edge = get_irn_out_edge_first(irn); - ir_node *target_block = get_edge_src_irn(edge); - - be_emit_cstring(env->emit, "\tb "); - arm_emit_block_label(env, target_block); - be_emit_finish_line_gas(env->emit, irn); -} - -static void emit_arm_fpaDbl2GP(arm_emit_env_t *env, const ir_node *irn) { - be_emit_cstring(env->emit, "\tstfd "); - arm_emit_source_register(env, irn, 0); - be_emit_cstring(env->emit, ", [sp, #-8]!"); - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* Push fp to stack */"); - be_emit_finish_line_gas(env->emit, NULL); - - be_emit_cstring(env->emit, "\tldmfd sp!, {"); - arm_emit_dest_register(env, irn, 1); - be_emit_cstring(env->emit, ", "); - arm_emit_dest_register(env, irn, 0); - be_emit_char(env->emit, '}'); - be_emit_pad_comment(env->emit); - be_emit_cstring(env->emit, "/* Pop destination */"); - be_emit_finish_line_gas(env->emit, irn); -} - -/*********************************************************************************** - * _ __ _ - * (_) / _| | | - * _ __ ___ __ _ _ _ __ | |_ _ __ __ _ _ __ ___ _____ _____ _ __| | __ - * | '_ ` _ \ / _` | | '_ \ | _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ / - * | | | | | | (_| | | | | | | | | | | (_| | | | | | | __/\ V V / (_) | | | < - * |_| |_| |_|\__,_|_|_| |_| |_| |_| \__,_|_| |_| |_|\___| \_/\_/ \___/|_| |_|\_\ - * - ***********************************************************************************/ + be_emit_cstring("\t/* fallthrough to "); + arm_emit_cfop_target(node); + be_emit_cstring(" */"); + } + be_emit_finish_line_gas(node); +} -static void emit_silence(arm_emit_env_t *env, const ir_node *irn) { - /* Do nothing. */ +static void emit_nothing(const ir_node *irn) +{ + (void) irn; } /** * The type of a emitter function. */ -typedef void (emit_func)(arm_emit_env_t *env, const ir_node *irn); +typedef void (emit_func)(const ir_node *irn); /** * Set a node emitter. Make it a bit more type safe. */ -static INLINE void set_emitter(ir_op *op, emit_func arm_emit_node) { +static inline void set_emitter(ir_op *op, emit_func arm_emit_node) +{ op->ops.generic = (op_func)arm_emit_node; } @@ -783,119 +896,131 @@ static INLINE void set_emitter(ir_op *op, emit_func arm_emit_node) { * Enters the emitter functions for handled nodes into the generic * pointer of an opcode. */ -static void arm_register_emitters(void) { - -#define ARM_EMIT(a) set_emitter(op_arm_##a, emit_arm_##a) -#define EMIT(a) set_emitter(op_##a, emit_##a) -#define BE_EMIT(a) set_emitter(op_be_##a, emit_be_##a) -#define SILENCE(a) set_emitter(op_##a, emit_silence) - +static void arm_register_emitters(void) +{ /* first clear the generic function pointer for all ops */ clear_irp_opcodes_generic_func(); /* register all emitter functions defined in spec */ arm_register_spec_emitters(); - /* other emitter functions */ - ARM_EMIT(CondJmp); - ARM_EMIT(CopyB); -// ARM_EMIT(CopyB_i); -// ARM_EMIT(Const); - ARM_EMIT(SymConst); - ARM_EMIT(SwitchJmp); - ARM_EMIT(fpaDbl2GP); - - /* benode emitter */ - BE_EMIT(Call); - BE_EMIT(IncSP); -// BE_EMIT(AddSP); - BE_EMIT(Copy); - BE_EMIT(Spill); - BE_EMIT(Reload); - BE_EMIT(Perm); - BE_EMIT(StackParam); - - /* firm emitter */ - EMIT(Jmp); - - /* noisy stuff */ -#ifdef SILENCER - SILENCE(Proj); - SILENCE(Phi); - SILENCE(be_Keep); - SILENCE(be_CopyKeep); -#endif - -#undef ARM_EMIT -#undef BE_EMIT -#undef EMIT -#undef SILENCE + /* custom emitter */ + set_emitter(op_arm_B, emit_arm_B); + set_emitter(op_arm_CopyB, emit_arm_CopyB); + set_emitter(op_arm_fConst, emit_arm_fConst); + set_emitter(op_arm_FrameAddr, emit_arm_FrameAddr); + set_emitter(op_arm_Jmp, emit_arm_Jmp); + set_emitter(op_arm_SwitchJmp, emit_arm_SwitchJmp); + set_emitter(op_arm_SymConst, emit_arm_SymConst); + set_emitter(op_be_Copy, emit_be_Copy); + set_emitter(op_be_CopyKeep, emit_be_Copy); + set_emitter(op_be_IncSP, emit_be_IncSP); + set_emitter(op_be_MemPerm, emit_be_MemPerm); + set_emitter(op_be_Perm, emit_be_Perm); + set_emitter(op_be_Return, emit_be_Return); + + /* no need to emit anything for the following nodes */ + set_emitter(op_Phi, emit_nothing); + set_emitter(op_be_Keep, emit_nothing); + set_emitter(op_be_Start, emit_nothing); + set_emitter(op_be_Barrier, emit_nothing); } /** * Emits code for a node. */ -static void arm_emit_node(arm_emit_env_t *env, const ir_node *irn) { +static void arm_emit_node(const ir_node *irn) +{ ir_op *op = get_irn_op(irn); if (op->ops.generic) { emit_func *emit = (emit_func *)op->ops.generic; - (*emit)(env, irn); + be_dbg_set_dbg_info(get_irn_dbg_info(irn)); + (*emit)(irn); } else { - be_emit_cstring(env->emit, "\t/* TODO */"); - be_emit_finish_line_gas(env->emit, irn); + panic("Error: No emit handler for node %+F (graph %+F)\n", + irn, current_ir_graph); } } /** - * Walks over the nodes in a block connected by scheduling edges - * and emits code for each node. + * emit the block label if needed. */ -void arm_gen_block(ir_node *block, void *ctx) { - arm_emit_env_t *env = ctx; - ir_node *irn; - - arm_emit_block_label(env, block); - be_emit_cstring(env->emit, ":\n"); - be_emit_write_line(env->emit); - - sched_foreach(block, irn) { - arm_emit_node(env, irn); +static void arm_emit_block_header(ir_node *block, ir_node *prev) +{ + int n_cfgpreds; + int need_label; + int i, arity; + ir_exec_freq *exec_freq = be_get_irg_exec_freq(cg->irg); + + need_label = 0; + n_cfgpreds = get_Block_n_cfgpreds(block); + if (n_cfgpreds == 1) { + ir_node *pred = get_Block_cfgpred(block, 0); + ir_node *pred_block = get_nodes_block(pred); + + /* we don't need labels for fallthrough blocks, however switch-jmps + * are no fallthroughs */ + if (pred_block == prev && + !(is_Proj(pred) && is_arm_SwitchJmp(get_Proj_pred(pred)))) { + need_label = 0; + } else { + need_label = 1; + } + } else { + need_label = 1; } -} - -/** - * Emits code for function start. - */ -void arm_func_prolog(arm_emit_env_t *env, ir_graph *irg) { - be_emit_env_t *eenv = env->emit; - ir_entity *ent = get_irg_entity(irg); - const char *irg_name = get_entity_ld_name(ent); + if (need_label) { + be_gas_emit_block_name(block); + be_emit_char(':'); - be_emit_write_line(eenv); - be_gas_emit_switch_section(eenv, GAS_SECTION_TEXT); - be_emit_cstring(eenv, "\t.align 2\n"); + be_emit_pad_comment(); + be_emit_cstring(" /* preds:"); - if (get_entity_visibility(ent) == visibility_external_visible) - be_emit_irprintf(eenv, "\t.global %s\n", irg_name); - be_emit_irprintf(eenv, "%s:\n", irg_name); + /* emit list of pred blocks in comment */ + arity = get_irn_arity(block); + for (i = 0; i < arity; ++i) { + ir_node *predblock = get_Block_cfgpred_block(block, i); + be_emit_irprintf(" %d", get_irn_node_nr(predblock)); + } + } else { + be_emit_cstring("\t/* "); + be_gas_emit_block_name(block); + be_emit_cstring(": "); + } + if (exec_freq != NULL) { + be_emit_irprintf(" freq: %f", + get_block_execfreq(exec_freq, block)); + } + be_emit_cstring(" */\n"); + be_emit_write_line(); } /** - * Emits code for function end + * Walks over the nodes in a block connected by scheduling edges + * and emits code for each node. */ -void arm_emit_end(FILE *F, ir_graph *irg) { - fprintf(F, "\t.ident \"firmcc\"\n"); +static void arm_gen_block(ir_node *block, ir_node *prev_block) +{ + ir_node *irn; + + arm_emit_block_header(block, prev_block); + be_dbg_set_dbg_info(get_irn_dbg_info(block)); + sched_foreach(block, irn) { + arm_emit_node(irn); + } } /** + * Block-walker: * Sets labels for control flow nodes (jump target) - * TODO: Jump optimization */ -void arm_gen_labels(ir_node *block, void *env) { +static void arm_gen_labels(ir_node *block, void *env) +{ ir_node *pred; int n = get_Block_n_cfgpreds(block); + (void)env; for (n--; n >= 0; n--) { pred = get_Block_cfgpred(block, n); @@ -903,34 +1028,42 @@ void arm_gen_labels(ir_node *block, void *env) { } } - /** - * Main driver. Emits the code for one routine. + * Compare two entries of the symbol or tarval set. */ -void arm_gen_routine(const arm_code_gen_t *cg, ir_graph *irg) +static int cmp_sym_or_tv(const void *elt, const void *key, size_t size) +{ + const sym_or_tv_t *p1 = elt; + const sym_or_tv_t *p2 = key; + (void) size; + + /* as an identifier NEVER can point to a tarval, it's enough + to compare it this way */ + return p1->u.generic != p2->u.generic; +} + +void arm_gen_routine(const arm_code_gen_t *arm_cg, ir_graph *irg) { - SymConstEntry *entry; - arm_emit_env_t emit_env; - ir_node **blk_sched; - int i, n; + ir_node **blk_sched; + int i, n; + ir_node *last_block = NULL; + ir_entity *entity = get_irg_entity(irg); - emit_env.emit = &cg->isa->emit; - emit_env.arch_env = cg->arch_env; - emit_env.cg = cg; - emit_env.symbols = NULL; - obstack_init(&emit_env.obst); - FIRM_DBG_REGISTER(emit_env.mod, "firm.be.arm.emit"); + cg = arm_cg; + sym_or_tv = new_set(cmp_sym_or_tv, 8); - /* set the global arch_env (needed by print hooks) */ - arch_env = cg->arch_env; + be_gas_elf_type_char = '%'; arm_register_emitters(); - /* create the block schedule. For now, we don't need it earlier. */ - blk_sched = be_create_block_schedule(cg->irg, cg->birg->exec_freq); + be_dbg_method_begin(entity); + + /* create the block schedule */ + blk_sched = be_create_block_schedule(irg); - arm_func_prolog(&emit_env, irg); - irg_block_walk_graph(irg, arm_gen_labels, NULL, &emit_env); + be_gas_emit_function_prolog(entity, 4); + + irg_block_walk_graph(irg, arm_gen_labels, NULL, NULL); n = ARR_LEN(blk_sched); for (i = 0; i < n;) { @@ -942,20 +1075,53 @@ void arm_gen_routine(const arm_code_gen_t *cg, ir_graph *irg) /* set here the link. the emitter expects to find the next block here */ set_irn_link(block, next_bl); - arm_gen_block(block, &emit_env); + arm_gen_block(block, last_block); + last_block = block; } /* emit SymConst values */ - if (emit_env.symbols) - be_emit_cstring(emit_env.emit, "\t.align 2\n"); + if (set_count(sym_or_tv) > 0) { + sym_or_tv_t *entry; + + be_emit_cstring("\t.align 2\n"); + + foreach_set(sym_or_tv, entry) { + emit_constant_name(entry); + be_emit_cstring(":\n"); + be_emit_write_line(); - for (entry = emit_env.symbols; entry; entry = entry->next) { - be_emit_irprintf(emit_env.emit, ".L%u:\n", entry->label); - be_emit_cstring(emit_env.emit, "\t.word\t"); - arm_emit_immediate(&emit_env, entry->symconst); - be_emit_char(emit_env.emit, '\n'); - be_emit_write_line(emit_env.emit); + if (entry->is_entity) { + be_emit_cstring("\t.word\t"); + be_gas_emit_entity(entry->u.entity); + be_emit_char('\n'); + be_emit_write_line(); + } else { + tarval *tv = entry->u.tv; + int i, size = get_mode_size_bytes(get_tarval_mode(tv)); + unsigned v; + + /* beware: ARM fpa uses big endian format */ + for (i = ((size + 3) & ~3) - 4; i >= 0; i -= 4) { + /* get 32 bits */ + v = get_tarval_sub_bits(tv, i+3); + v = (v << 8) | get_tarval_sub_bits(tv, i+2); + v = (v << 8) | get_tarval_sub_bits(tv, i+1); + v = (v << 8) | get_tarval_sub_bits(tv, i+0); + be_emit_irprintf("\t.word\t%u\n", v); + be_emit_write_line(); + } + } + } + be_emit_char('\n'); + be_emit_write_line(); } + del_set(sym_or_tv); - obstack_free(&emit_env.obst, NULL); + be_gas_emit_function_epilog(entity); + be_dbg_method_end(); +} + +void arm_init_emitter(void) +{ + FIRM_DBG_REGISTER(dbg, "firm.be.arm.emit"); }