X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Farm%2Farm_emitter.c;h=5294070466e8aa920866465e9ac04f9cb69aa5a3;hb=75ee2fcd7c5bfb5ff2c680b7086cf796fa9ff66a;hp=471b24ffd6e4c9c287f60cf57caee056fceb9160;hpb=f0e95f8dffe90057f8e23ef73a68330c0580e640;p=libfirm diff --git a/ir/be/arm/arm_emitter.c b/ir/be/arm/arm_emitter.c index 471b24ffd..529407046 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. * @@ -20,7 +20,7 @@ /** * @file * @brief arm emitter - * @author Oliver Richter, Tobias Gneist + * @author Oliver Richter, Tobias Gneist, Michael Beck * @version $Id$ */ #define SILENCER @@ -36,11 +36,14 @@ #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" @@ -56,14 +59,21 @@ #include "../benode_t.h" +#define BLOCK_PREFIX ".L" + #define SNPRINTF_BUF_LEN 128 -static const arch_env_t *arch_env = NULL; +DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;) + +static const arch_env_t *arch_env = NULL; +static const arm_code_gen_t *cg; +static const arm_isa_t *isa; +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; @@ -76,6 +86,23 @@ static const arch_register_t *get_in_reg(const arch_env_t *arch_env, const ir_no reg = arch_get_irn_register(arch_env, 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; + + /* ask for the requirements */ + req = arch_get_register_req(arch_env, 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 +110,7 @@ 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; @@ -126,40 +152,30 @@ static const arch_register_t *get_out_reg(const arch_env_t *arch_env, * |_| |_| *************************************************************/ -/** - * 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)); -} - /** * 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_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)); } /** * Emit the name of the destination register at given output position. */ -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)); +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 a node's offset. */ -void arm_emit_offset(arm_emit_env_t *env, const ir_node *node) { +void arm_emit_offset(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) { + 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) { @@ -168,46 +184,49 @@ void arm_emit_offset(arm_emit_env_t *env, const ir_node *node) { 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); + be_emit_irprintf("%d", offset); } /** - * Emit the instruction suffix depending on the mode. + * Emit the arm fpa 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; - - attr = get_arm_attr(node); - mode = attr->op_mode ? attr->op_mode : get_irn_mode(node); - bits = get_mode_size_bits(mode); - +static void arm_emit_fpa_postfix(const ir_mode *mode) { + int bits = get_mode_size_bits(mode); if (bits == 32) - be_emit_char(env->emit, 's'); + be_emit_char('s'); else if (bits == 64) - be_emit_char(env->emit, 'd'); + be_emit_char('d'); else - be_emit_char(env->emit, 'e'); + be_emit_char('e'); } - /** - * Returns non-zero if a mode has a Immediate attribute. + * Emit the instruction suffix depending on the mode. */ -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_mode(const ir_node *node) { + ir_mode *mode; + + if (is_arm_irn(node)) { + const arm_attr_t *attr = get_arm_attr_const(node); + mode = attr->op_mode ? attr->op_mode : get_irn_mode(node); + } else { + mode = get_irn_mode(node); + } + arm_emit_fpa_postfix(mode); } /** * 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))); +void arm_emit_immediate(const ir_node *node) { + const arm_attr_t *attr = get_arm_attr_const(node); + + if (ARM_GET_SHF_MOD(attr) == ARM_SHF_IMM) { + be_emit_irprintf("#0x%X", arm_decode_imm_w_shift(get_arm_imm_value(node))); + } else if (ARM_GET_FPA_IMM(attr)) { + be_emit_irprintf("#%s", arm_get_fpa_imm_name(get_arm_imm_value(node))); } else if (is_arm_SymConst(node)) - be_emit_string(env->emit, get_arm_symconst_label(node)); + be_emit_ident(get_arm_symconst_id(node)); else { assert(!"not a Constant"); } @@ -216,17 +235,28 @@ void arm_emit_immediate(arm_emit_env_t *env, const ir_node *node) { /** * 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) { +void arm_emit_shift(const ir_node *node) { arm_shift_modifier mod; mod = get_arm_shift_modifier(node); if (ARM_HAS_SHIFT(mod)) { - long v = get_tarval_long(get_arm_value(node)); + long v = get_arm_imm_value(node); - be_emit_irprintf(env->emit, ", %s #%ld", arm_shf_mod_name(mod), v); + be_emit_irprintf(", %s #%l", arm_shf_mod_name(mod), v); } } +/** An entry in the sym_or_tv set. */ +typedef struct sym_or_tv_t { + union { + ident *id; /**< An ident. */ + tarval *tv; /**< A tarval. */ + const void *generic; /**< For generic compare. */ + } u; + unsigned label; /**< the associated label. */ + char is_ident; /**< Non-zero if an ident is stored. */ +} sym_or_tv_t; + /** * Returns a unique label. This number will not be used a second time. */ @@ -238,82 +268,154 @@ static unsigned get_unique_label(void) { /** * 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) { + sym_or_tv_t key, *entry; + unsigned label; + + key.u.id = get_arm_symconst_id(irn); + key.is_ident = 1; + 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_irprintf(", .L%u", label); + be_emit_finish_line_gas(irn); +} + +/** + * Emit a floating point fpa constant. + */ +static void emit_arm_fpaConst(const ir_node *irn) { + sym_or_tv_t key, *entry; + unsigned label; + ir_mode *mode; + + key.u.tv = get_fpaConst_value(irn); + key.is_ident = 0; + 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_irprintf(", .L%u", label); + 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); +} + +/** + * Emits a block label for the given block. + */ +static void arm_emit_block_name(const ir_node *block) { + if (has_Block_label(block)) { + be_emit_string(be_gas_label_prefix()); + be_emit_irprintf("%lu", get_Block_label(block)); + } else { + be_emit_cstring(BLOCK_PREFIX); + be_emit_irprintf("%d", get_irn_node_nr(block)); + } +} + +/** + * 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); + + arm_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_CmpBra(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); + int proj_num = get_arm_CondJmp_proj_num(irn); 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; } } + /* for now, the code works for scheduled and non-schedules blocks */ + block = get_nodes_block(irn); + + /* we have a block schedule */ + next_block = sched_next_block(block); + 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); + be_emit_cstring("\tb "); + arm_emit_cfop_target(proj_false); + be_emit_finish_line_gas(proj_false); } 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); + be_emit_cstring("\tb "); + arm_emit_cfop_target(proj_true); + be_emit_finish_line_gas(proj_true); } else { - ir_node *block = get_nodes_block(irn); - if (mode_is_float(opmode)) { suffix = "ICHWILLIMPLEMENTIERTWERDEN"; - 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); + be_emit_cstring("\tfcmp "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 1); + be_emit_finish_line_gas(irn); - 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); + be_emit_cstring("\tfmstat"); + be_emit_pad_comment(); + be_emit_cstring("/* FCSPR -> CPSR */"); + be_emit_finish_line_gas(NULL); } else { - if (true_block == sched_next_block(block)) { - /* negate it */ - proj_num = get_negated_pnc(proj_num, opmode); + 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; + proj_num = get_negated_pnc(proj_num, mode_Iu); } switch (proj_num) { case pn_Cmp_Eq: suffix = "eq"; break; @@ -325,159 +427,206 @@ static void emit_arm_CondJmp(arm_emit_env_t *env, const ir_node *irn) { 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); + be_emit_cstring("\tcmp "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 1); + be_emit_finish_line_gas(irn); } - 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); + /* 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_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); - } + be_emit_cstring("b "); + arm_emit_cfop_target(proj_false); + be_emit_finish_line_gas(proj_false); } } } +/** + * Emit a Compare with conditional branch. + */ +static void emit_arm_fpaCmfBra(const ir_node *irn) { + (void) irn; +} + +/** + * Emit a Compare with conditional branch. + */ +static void emit_arm_fpaCmfeBra(const ir_node *irn) { + (void) irn; +} + +/** 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) { + unsigned size = (unsigned)get_arm_imm_value(irn); + + 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) { + assert(!"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*)); @@ -485,26 +634,26 @@ static void emit_arm_SwitchJmp(arm_emit_env_t *env, const ir_node *irn) { 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 @@ -512,38 +661,35 @@ 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); } @@ -551,69 +697,69 @@ static void emit_arm_SwitchJmp(arm_emit_env_t *env, const ir_node *irn) { /* emit_be */ /************************************************************************/ -static void emit_be_Call(arm_emit_env_t *env, const ir_node *irn) { +static void emit_be_Call(const ir_node *irn) { ir_entity *ent = be_Call_get_entity(irn); - be_emit_cstring(env->emit, "\tbl "); + be_emit_cstring("\tbl "); if (ent) { - mark_entity_visited(ent); - be_emit_ident(env->emit, get_entity_ld_ident(ent)); + set_entity_backend_marked(ent, 1); + be_emit_ident(get_entity_ld_ident(ent)); } else { - arm_emit_source_register(env, irn, be_pos_Call_ptr); + arm_emit_source_register(irn, be_pos_Call_ptr); } - be_emit_finish_line_gas(env->emit, irn); + be_emit_finish_line_gas(irn); } /** Emit an IncSP node */ -static void emit_be_IncSP(arm_emit_env_t *env, const ir_node *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); + be_emit_cstring("\tadd "); + arm_emit_dest_register(irn, 0); + be_emit_cstring(", "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", #"); + arm_emit_offset(irn); } else { - be_emit_cstring(env->emit, "\t/* omitted IncSP("); - arm_emit_offset(env, irn); - be_emit_cstring(env->emit,") */"); + be_emit_cstring("\t/* omitted IncSP("); + arm_emit_offset(irn); + be_emit_cstring(") */"); } - 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)) { + be_emit_cstring("\t/* omitted Copy: "); + arm_emit_source_register(irn, 0); + be_emit_cstring(" -> "); + arm_emit_dest_register(irn, 0); + be_emit_finish_line_gas(irn); 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(isa)) { + be_emit_cstring("\tmvf"); + arm_emit_mode(irn); + 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"); @@ -623,134 +769,134 @@ static void emit_be_Copy(arm_emit_env_t *env, const ir_node *irn) { /** * 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_Spill(const ir_node *irn) { + ir_mode *mode = get_irn_mode(be_get_Spill_val(irn)); if (mode_is_float(mode)) { - if (USE_FPA(env->cg->isa)) { - be_emit_cstring(env->emit, "\tstf "); + if (USE_FPA(cg->isa)) { + be_emit_cstring("\tstf"); + arm_emit_fpa_postfix(mode); + be_emit_char(' '); } 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 "); + be_emit_cstring("\tstr "); } else { assert(0 && "spill not supported for this mode"); panic("emit_be_Spill: spill not supported for this mode"); } - 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); + arm_emit_source_register(irn, 1); + be_emit_cstring(", ["); + arm_emit_source_register(irn, 0); + be_emit_cstring(", #"); + arm_emit_offset(irn); + be_emit_char(']'); + be_emit_finish_line_gas(irn); } /** * Emit code for a Reload. */ -static void emit_be_Reload(arm_emit_env_t *env, const ir_node *irn) { +static void emit_be_Reload(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 "); + if (USE_FPA(cg->isa)) { + be_emit_cstring("\tldf"); + arm_emit_fpa_postfix(mode); + be_emit_char(' '); } 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 "); + be_emit_cstring("\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); + arm_emit_dest_register(irn, 0); + be_emit_cstring(", ["); + arm_emit_source_register(irn, 0); + be_emit_cstring(", #"); + arm_emit_offset(irn); + be_emit_char(']'); + be_emit_finish_line_gas(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"); - } - } 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); +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); } /************************************************************************/ /* 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); +static void emit_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); - be_emit_cstring(env->emit, "\tb "); - arm_emit_block_label(env, target_block); - be_emit_finish_line_gas(env->emit, irn); + /* 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("\t/* fallthrough to "); + arm_emit_cfop_target(node); + be_emit_cstring(" */"); + } + be_emit_finish_line_gas(node); } -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); +static void emit_arm_fpaDbl2GP(const ir_node *irn) { + be_emit_cstring("\tstfd "); + arm_emit_source_register(irn, 0); + be_emit_cstring(", [sp, #-8]!"); + be_emit_pad_comment(); + be_emit_cstring("/* Push fp to stack */"); + be_emit_finish_line_gas(NULL); + + be_emit_cstring("\tldmfd sp!, {"); + arm_emit_dest_register(irn, 1); + be_emit_cstring(", "); + arm_emit_dest_register(irn, 0); + be_emit_char('}'); + be_emit_pad_comment(); + be_emit_cstring("/* Pop destination */"); + be_emit_finish_line_gas(irn); +} - 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); +static void emit_arm_LdTls(const ir_node *irn) { + (void) irn; + panic("TLS not supported for this target\n"); + /* Er... our gcc does not support it... Install a newer toolchain. */ } /*********************************************************************************** @@ -763,14 +909,15 @@ static void emit_arm_fpaDbl2GP(arm_emit_env_t *env, const ir_node *irn) { * ***********************************************************************************/ -static void emit_silence(arm_emit_env_t *env, const ir_node *irn) { +static void emit_silence(const ir_node *irn) { + (void) irn; /* Do nothing. */ } /** * 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. @@ -797,33 +944,39 @@ static void arm_register_emitters(void) { arm_register_spec_emitters(); /* other emitter functions */ - ARM_EMIT(CondJmp); + ARM_EMIT(CmpBra); + ARM_EMIT(fpaCmfBra); + ARM_EMIT(fpaCmfeBra); ARM_EMIT(CopyB); // ARM_EMIT(CopyB_i); // ARM_EMIT(Const); ARM_EMIT(SymConst); ARM_EMIT(SwitchJmp); ARM_EMIT(fpaDbl2GP); + ARM_EMIT(fpaConst); + ARM_EMIT(LdTls); /* 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(Start); SILENCE(Proj); SILENCE(Phi); SILENCE(be_Keep); SILENCE(be_CopyKeep); + SILENCE(be_RegParams); + SILENCE(be_Barrier); + SILENCE(be_Return); #endif #undef ARM_EMIT @@ -832,70 +985,156 @@ static void arm_register_emitters(void) { #undef SILENCE } +static const char *last_name = NULL; +static unsigned last_line = -1; +static unsigned num = -1; + +/** + * Emit the debug support for node node. + */ +static void arm_emit_dbg(const ir_node *irn) { + dbg_info *db = get_irn_dbg_info(irn); + unsigned lineno; + const char *fname = ir_retrieve_dbg_info(db, &lineno); + + if (! cg->birg->main_env->options->stabs_debug_support) + return; + + if (fname) { + if (last_name != fname) { + last_line = -1; + be_dbg_include_begin(cg->birg->main_env->db_handle, fname); + last_name = fname; + } + if (last_line != lineno) { + char name[64]; + + snprintf(name, sizeof(name), ".LM%u", ++num); + last_line = lineno; + be_dbg_line(cg->birg->main_env->db_handle, lineno, name); + be_emit_string(name); + be_emit_cstring(":\n"); + be_emit_write_line(); + } + } +} + /** * 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); + arm_emit_dbg(irn); + (*emit)(irn); } else { - be_emit_cstring(env->emit, "\t/* TODO */"); - be_emit_finish_line_gas(env->emit, irn); + be_emit_cstring("\t/* TODO */"); + be_emit_finish_line_gas(irn); } } +/** + * emit the block label if needed. + */ +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 = cg->birg->exec_freq; + + 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; + } + + if (need_label) { + arm_emit_block_name(block); + be_emit_char(':'); + + be_emit_pad_comment(); + be_emit_cstring(" /* preds:"); + + /* 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/* "); + arm_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(); +} + /** * Walks over the nodes in a block connected by scheduling edges * and emits code for each node. */ -void arm_gen_block(ir_node *block, void *ctx) { - arm_emit_env_t *env = ctx; +static void arm_gen_block(ir_node *block, ir_node *prev_block) { ir_node *irn; - arm_emit_block_label(env, block); - be_emit_cstring(env->emit, ":\n"); - be_emit_write_line(env->emit); - + arm_emit_block_header(block, prev_block); + arm_emit_dbg(block); sched_foreach(block, irn) { - arm_emit_node(env, irn); + arm_emit_node(irn); } } - /** * Emits code for function start. */ -void arm_func_prolog(arm_emit_env_t *env, ir_graph *irg) { - be_emit_env_t *eenv = env->emit; +void arm_func_prolog(ir_graph *irg) { ir_entity *ent = get_irg_entity(irg); const char *irg_name = get_entity_ld_name(ent); - be_emit_write_line(eenv); - be_gas_emit_switch_section(eenv, GAS_SECTION_TEXT); - be_emit_cstring(eenv, "\t.align 2\n"); + be_emit_write_line(); + be_gas_emit_switch_section(GAS_SECTION_TEXT); + be_emit_cstring("\t.align 2\n"); 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); + be_emit_irprintf("\t.global %s\n", irg_name); + be_emit_irprintf("%s:\n", irg_name); } /** * Emits code for function end */ void arm_emit_end(FILE *F, ir_graph *irg) { + (void) irg; fprintf(F, "\t.ident \"firmcc\"\n"); } /** + * 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 +1142,39 @@ void arm_gen_labels(ir_node *block, void *env) { } } +/** + * Compare two entries of the symbol or tarval set. + */ +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; +} /** * Main driver. Emits the code for one routine. */ -void arm_gen_routine(const arm_code_gen_t *cg, ir_graph *irg) -{ - SymConstEntry *entry; - arm_emit_env_t emit_env; +void arm_gen_routine(const arm_code_gen_t *arm_cg, ir_graph *irg) { ir_node **blk_sched; int i, n; + ir_node *last_block = NULL; - 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"); - - /* set the global arch_env (needed by print hooks) */ - arch_env = cg->arch_env; + cg = arm_cg; + isa = (const arm_isa_t *)cg->arch_env->isa; + arch_env = cg->arch_env; + sym_or_tv = new_set(cmp_sym_or_tv, 8); 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); - arm_func_prolog(&emit_env, irg); - irg_block_walk_graph(irg, arm_gen_labels, NULL, &emit_env); + arm_func_prolog(irg); + irg_block_walk_graph(irg, arm_gen_labels, NULL, NULL); n = ARR_LEN(blk_sched); for (i = 0; i < n;) { @@ -942,20 +1186,48 @@ 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"); - - 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 (set_count(sym_or_tv) > 0) { + sym_or_tv_t *entry; + + be_emit_cstring("\t.align 2\n"); + + foreach_set(sym_or_tv, entry) { + be_emit_irprintf(".L%u:\n", entry->label); + + if (entry->is_ident) { + be_emit_cstring("\t.word\t"); + be_emit_ident(entry->u.id); + 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); +void arm_init_emitter(void) +{ + FIRM_DBG_REGISTER(dbg, "firm.be.arm.emit"); }