/**
* @file
* @brief emit assembler for a backend graph
- * @version $Id: amd64_emitter.c 26746 2009-11-27 08:53:15Z matze $
*/
#include "config.h"
#include <limits.h>
+#include "be_t.h"
+#include "error.h"
#include "xmalloc.h"
#include "tv.h"
#include "iredges.h"
#include "besched.h"
#include "begnuas.h"
#include "beblocksched.h"
-#include "be_dbgout.h"
#include "amd64_emitter.h"
#include "gen_amd64_emitter.h"
#include "amd64_nodes_attr.h"
#include "amd64_new_nodes.h"
-#define SNPRINTF_BUF_LEN 128
-
#include "benode.h"
/*************************************************************
* |_| |_|
*************************************************************/
-void amd64_emit_register(const arch_register_t *reg)
+/**
+ * Returns the target block for a control flow node.
+ */
+static ir_node *get_cfop_target_block(const ir_node *irn)
{
- be_emit_char('%');
- be_emit_string(arch_register_get_name(reg));
+ return (ir_node*)get_irn_link(irn);
}
-void amd64_emit_immediate(const ir_node *node)
+void amd64_emitf(ir_node const *const node, char const *fmt, ...)
{
- const amd64_attr_t *attr = get_amd64_attr_const (node);
- be_emit_char('$');
- be_emit_irprintf("0x%X", attr->ext.imm_value);
-}
+ va_list ap;
+ va_start(ap, fmt);
-void amd64_emit_fp_offset(const ir_node *node)
-{
- const amd64_SymConst_attr_t *attr = get_amd64_SymConst_attr_const(node);
- if (attr->fp_offset)
- be_emit_irprintf("%d", attr->fp_offset);
-}
+ be_emit_char('\t');
+ for (;;) {
+ char const *start = fmt;
-void amd64_emit_source_register(const ir_node *node, int pos)
-{
- amd64_emit_register(arch_get_irn_register_in(node, pos));
-}
+ while (*fmt != '%' && *fmt != '\n' && *fmt != '\0')
+ ++fmt;
+ if (fmt != start) {
+ be_emit_string_len(start, fmt - start);
+ }
-void amd64_emit_dest_register(const ir_node *node, int pos)
-{
- amd64_emit_register(arch_get_irn_register_out(node, pos));
-}
+ if (*fmt == '\n') {
+ be_emit_char('\n');
+ be_emit_write_line();
+ be_emit_char('\t');
+ ++fmt;
+ continue;
+ }
-/**
- * Returns the target label for a control flow node.
- */
-/*
-static void amd64_emit_cfop_target(const ir_node *node)
-{
- ir_node *block = get_irn_link(node);
+ if (*fmt == '\0')
+ break;
+
+ ++fmt;
+
+ switch (*fmt++) {
+ arch_register_t const *reg;
+
+ case '%':
+ be_emit_char('%');
+ break;
+
+ case 'C': {
+ amd64_attr_t const *const attr = get_amd64_attr_const(node);
+ be_emit_irprintf("$0x%X", attr->ext.imm_value);
+ break;
+ }
+
+ case 'D':
+ if (*fmt < '0' || '9' <= *fmt)
+ goto unknown;
+ reg = arch_get_irn_register_out(node, *fmt++ - '0');
+ goto emit_R;
+
+ case 'E': {
+ ir_entity const *const ent = va_arg(ap, ir_entity const*);
+ be_gas_emit_entity(ent);
+ break;
+ }
+
+ case 'L': {
+ ir_node *const block = get_cfop_target_block(node);
+ be_gas_emit_block_name(block);
+ break;
+ }
+
+ case 'O': {
+ amd64_SymConst_attr_t const *const attr = get_amd64_SymConst_attr_const(node);
+ if (attr->fp_offset)
+ be_emit_irprintf("%d", attr->fp_offset);
+ break;
+ }
+
+ case 'R':
+ reg = va_arg(ap, arch_register_t const*);
+emit_R:
+ be_emit_char('%');
+ be_emit_string(reg->name);
+ break;
+
+ case 'S': {
+ int pos;
+ if ('0' <= *fmt && *fmt <= '9') {
+ pos = *fmt++ - '0';
+ } else if (*fmt == '*') {
+ ++fmt;
+ pos = va_arg(ap, int);
+ } else {
+ goto unknown;
+ }
+ reg = arch_get_irn_register_in(node, pos);
+ goto emit_R;
+ }
+
+ case 'd': {
+ int const num = va_arg(ap, int);
+ be_emit_irprintf("%d", num);
+ break;
+ }
+
+ case 's': {
+ char const *const str = va_arg(ap, char const*);
+ be_emit_string(str);
+ break;
+ }
+
+ case 'u': {
+ unsigned const num = va_arg(ap, unsigned);
+ be_emit_irprintf("%u", num);
+ break;
+ }
+
+ default:
+unknown:
+ panic("unknown format conversion");
+ }
+ }
- be_emit_irprintf("BLOCK_%ld", get_irn_node_nr(block));
+ be_emit_finish_line_gas(node);
+ va_end(ap);
}
-*/
/***********************************************************************************
* _ __ _
*
***********************************************************************************/
-/**
- * Default emitter for anything that we don't want to generate code for.
- */
-static void emit_nothing(const ir_node *node)
-{
- (void) node;
-}
-
/**
* Emit a SymConst.
*/
static void emit_amd64_SymConst(const ir_node *irn)
{
const amd64_SymConst_attr_t *attr = get_amd64_SymConst_attr_const(irn);
-#if 0
- sym_or_tv_t key, *entry;
- unsigned label;
-
- key.u.id = get_entity_ld_ident(attr->entity);
- 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;
-#endif
-
- be_emit_cstring("\tmov $");
- be_gas_emit_entity(attr->entity);
- be_emit_cstring(", ");
- amd64_emit_dest_register(irn, 0);
- be_emit_finish_line_gas(irn);
+ amd64_emitf(irn, "mov $%E, %D0", attr->entity);
}
/**
*/
static void emit_amd64_Conv(const ir_node *irn)
{
- be_emit_cstring("\tmov ");
- amd64_emit_source_register(irn, 0);
- be_emit_cstring(", ");
- amd64_emit_dest_register(irn, 0);
- be_emit_finish_line_gas(irn);
+ amd64_emitf(irn, "mov %S0, %D0");
}
return (ir_node*)get_irn_link(block);
}
-/**
- * Returns the target block for a control flow node.
- */
-static ir_node *get_cfop_target_block(const ir_node *irn)
-{
- return (ir_node*)get_irn_link(irn);
-}
-
-/**
- * Emit the target label for a control flow node.
- */
-static void amd64_emit_cfop_target(const ir_node *irn)
-{
- ir_node *block = get_cfop_target_block(irn);
-
- be_gas_emit_block_name(block);
-}
-
/**
* Emit a Jmp.
*/
/* we have a block schedule */
next_block = sched_next_block(block);
if (get_cfop_target_block(node) != next_block) {
- be_emit_cstring("\tjmp ");
- amd64_emit_cfop_target(node);
- } else {
- be_emit_cstring("\t/* fallthrough to ");
- amd64_emit_cfop_target(node);
- be_emit_cstring(" */");
+ amd64_emitf(node, "jmp %L");
+ } else if (be_options.verbose_asm) {
+ amd64_emitf(node, "/* fallthrough to %L */");
}
- be_emit_finish_line_gas(node);
}
/**
*/
static void emit_amd64_Jcc(const ir_node *irn)
{
- const ir_edge_t *edge;
- const ir_node *proj_true = NULL;
- const ir_node *proj_false = NULL;
- const ir_node *block;
- const ir_node *next_block;
- const char *suffix;
- const amd64_attr_t *attr = get_amd64_attr_const(irn);
- ir_relation relation = attr->ext.relation;
- ir_node *op1 = get_irn_n(irn, 0);
- const amd64_attr_t *cmp_attr = get_amd64_attr_const(op1);
- bool is_signed = !cmp_attr->data.cmp_unsigned;
+ const ir_node *proj_true = NULL;
+ const ir_node *proj_false = NULL;
+ const ir_node *block;
+ const ir_node *next_block;
+ const char *suffix;
+ const amd64_attr_t *attr = get_amd64_attr_const(irn);
+ ir_relation relation = attr->ext.relation;
+ ir_node *op1 = get_irn_n(irn, 0);
+ const amd64_attr_t *cmp_attr = get_amd64_attr_const(op1);
+ bool is_signed = !cmp_attr->data.cmp_unsigned;
assert(is_amd64_Cmp(op1));
}
/* emit the true proj */
- be_emit_irprintf("\tj%s ", suffix);
- amd64_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 ");
- amd64_emit_cfop_target(proj_false);
- be_emit_cstring(" */");
- be_emit_finish_line_gas(proj_false);
- } else {
- be_emit_cstring("\tjmp ");
- amd64_emit_cfop_target(proj_false);
- be_emit_finish_line_gas(proj_false);
+ amd64_emitf(proj_true, "j%s %L", suffix);
+
+ if (get_cfop_target_block(proj_false) != next_block) {
+ amd64_emitf(proj_false, "jmp %L");
+ } else if (be_options.verbose_asm) {
+ amd64_emitf(proj_false, "/* fallthrough to %L */");
}
}
* variable argument counts */
if (get_method_variadicity (be_Call_get_type((ir_node *) node))) {
/* But this still is a hack... */
- be_emit_cstring("\txor %rax, %rax");
- be_emit_finish_line_gas(node);
+ amd64_emitf(node, "xor %%rax, %%rax");
}
if (entity) {
- be_emit_cstring("\tcall ");
- be_gas_emit_entity (be_Call_get_entity(node));
- be_emit_finish_line_gas(node);
+ amd64_emitf(node, "call %E", entity);
} else {
be_emit_pad_comment();
be_emit_cstring("/* FIXME: call NULL entity?! */\n");
}
if (mode_is_float(mode)) {
- panic("emit_be_Copy: move not supported for FP");
+ panic("move not supported for FP");
} else if (mode_is_data(mode)) {
- be_emit_cstring("\tmov ");
- amd64_emit_source_register(irn, 0);
- be_emit_cstring(", ");
- amd64_emit_dest_register(irn, 0);
- be_emit_finish_line_gas(irn);
+ amd64_emitf(irn, "mov %S0, %D0");
} else {
- panic("emit_be_Copy: move not supported for this mode");
+ panic("move not supported for this mode");
}
}
static void emit_be_Perm(const ir_node *node)
{
const arch_register_t *in0, *in1;
- const arch_register_class_t *cls0, *cls1;
in0 = arch_get_irn_register(get_irn_n(node, 0));
in1 = arch_get_irn_register(get_irn_n(node, 1));
- cls0 = arch_register_get_class(in0);
- cls1 = arch_register_get_class(in1);
-
- assert(cls0 == cls1 && "Register class mismatch at Perm");
+ arch_register_class_t const* const cls0 = in0->reg_class;
+ assert(cls0 == in1->reg_class && "Register class mismatch at Perm");
- be_emit_cstring("\txchg ");
- amd64_emit_register (in0);
- be_emit_cstring(", ");
- amd64_emit_register (in1);
- be_emit_finish_line_gas(node);
+ amd64_emitf(node, "xchg %R, %R", in0, in1);
if (cls0 != &amd64_reg_classes[CLASS_amd64_gp]) {
panic("unexpected register class in be_Perm (%+F)", node);
const amd64_SymConst_attr_t *attr =
(const amd64_SymConst_attr_t*) get_amd64_attr_const(irn);
- be_emit_cstring("\tmov ");
- amd64_emit_source_register(irn, 0);
- be_emit_cstring(", ");
- amd64_emit_dest_register(irn, 0);
- be_emit_finish_line_gas(irn);
-
- be_emit_cstring("\tadd ");
- be_emit_irprintf("$0x%X", attr->fp_offset);
- be_emit_cstring(", ");
- amd64_emit_dest_register(irn, 0);
- be_emit_finish_line_gas(irn);
+ amd64_emitf(irn, "mov %S0, %D0");
+ amd64_emitf(irn, "add $%u, %D0", attr->fp_offset);
}
/**
return;
if (offs > 0) {
- be_emit_irprintf("\tsub ");
- be_emit_irprintf("$%u, ", offs);
- amd64_emit_dest_register(node, 0);
- be_emit_finish_line_gas(node);
+ amd64_emitf(node, "sub, $%d, %D0", offs);
} else {
- be_emit_irprintf("\tadd ");
- be_emit_irprintf("$%u, ", -offs);
- amd64_emit_dest_register(node, 0);
- be_emit_finish_line_gas(node);
+ amd64_emitf(node, "add, $%d, %D0", -offs);
}
}
static void emit_amd64_binop_op(const ir_node *irn, int second_op)
{
if (irn->op == op_amd64_Add) {
- be_emit_cstring("\tadd ");
- amd64_emit_source_register(irn, second_op);
- be_emit_cstring(", ");
- amd64_emit_dest_register(irn, 0);
- be_emit_finish_line_gas(irn);
+ amd64_emitf(irn, "add %S*, %D0", second_op);
} else if (irn->op == op_amd64_Sub) {
- be_emit_cstring("\tneg ");
- amd64_emit_source_register(irn, second_op);
- be_emit_finish_line_gas(irn);
- be_emit_cstring("\tadd ");
- amd64_emit_source_register(irn, second_op);
- be_emit_cstring(", ");
- amd64_emit_dest_register(irn, 0);
- be_emit_finish_line_gas(irn);
- be_emit_cstring("\tneg ");
- amd64_emit_source_register(irn, second_op);
- be_emit_finish_line_gas(irn);
+ amd64_emitf(irn, "neg %S*", second_op);
+ amd64_emitf(irn, "add %S*, %D0", second_op);
+ amd64_emitf(irn, "neg %S*", second_op);
}
}
int second_op = 0;
if (reg_d1 != reg_s1 && reg_d1 != reg_s2) {
- be_emit_cstring("\tmov ");
- amd64_emit_register(reg_s1);
- be_emit_cstring(", ");
- amd64_emit_register(reg_d1);
- be_emit_finish_line_gas(irn);
+ amd64_emitf(irn, "mov %R, %R", reg_s1, reg_d1);
second_op = 1;
-
} else if (reg_d1 == reg_s2 && reg_d1 != reg_s1) {
second_op = 0;
-
}
emit_amd64_binop_op(irn, second_op);
}
-/**
- * The type of a emitter function.
- */
-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)
-{
- op->ops.generic = (op_func)arm_emit_node;
-}
-
/**
* Enters the emitter functions for handled nodes into the generic
* pointer of an opcode.
static void amd64_register_emitters(void)
{
/* first clear the generic function pointer for all ops */
- clear_irp_opcodes_generic_func();
+ ir_clear_opcodes_generic_func();
/* register all emitter functions defined in spec */
amd64_register_spec_emitters();
- set_emitter(op_amd64_SymConst, emit_amd64_SymConst);
- set_emitter(op_amd64_Jmp, emit_amd64_Jmp);
- set_emitter(op_amd64_Jcc, emit_amd64_Jcc);
- set_emitter(op_amd64_Conv, emit_amd64_Conv);
- set_emitter(op_amd64_FrameAddr, emit_amd64_FrameAddr);
- set_emitter(op_be_Return, emit_be_Return);
- set_emitter(op_be_Call, emit_be_Call);
- set_emitter(op_be_Copy, emit_be_Copy);
- set_emitter(op_be_IncSP, emit_be_IncSP);
- set_emitter(op_be_Perm, emit_be_Perm);
-
- set_emitter(op_amd64_Add, emit_amd64_binop);
- set_emitter(op_amd64_Sub, emit_amd64_binop);
-
- set_emitter(op_be_Start, emit_nothing);
- set_emitter(op_be_Keep, emit_nothing);
- set_emitter(op_Phi, emit_nothing);
-}
-
-typedef void (*emit_func_ptr) (const ir_node *);
-
-/**
- * Emits code for a node.
- */
-static void amd64_emit_node(const ir_node *node)
-{
- ir_op *op = get_irn_op(node);
-
- if (op->ops.generic) {
- emit_func_ptr func = (emit_func_ptr) op->ops.generic;
- (*func) (node);
- } else {
- ir_fprintf(stderr, "No emitter for node %+F\n", node);
- }
+ be_set_emitter(op_amd64_Add, emit_amd64_binop);
+ be_set_emitter(op_amd64_Conv, emit_amd64_Conv);
+ be_set_emitter(op_amd64_FrameAddr, emit_amd64_FrameAddr);
+ be_set_emitter(op_amd64_Jcc, emit_amd64_Jcc);
+ be_set_emitter(op_amd64_Jmp, emit_amd64_Jmp);
+ be_set_emitter(op_amd64_Sub, emit_amd64_binop);
+ be_set_emitter(op_amd64_SymConst, emit_amd64_SymConst);
+ be_set_emitter(op_be_Call, emit_be_Call);
+ be_set_emitter(op_be_Copy, emit_be_Copy);
+ be_set_emitter(op_be_IncSP, emit_be_IncSP);
+ be_set_emitter(op_be_Perm, emit_be_Perm);
+ be_set_emitter(op_be_Return, emit_be_Return);
+
+ be_set_emitter(op_Phi, be_emit_nothing);
+ be_set_emitter(op_be_Keep, be_emit_nothing);
+ be_set_emitter(op_be_Start, be_emit_nothing);
}
/**
*/
static void amd64_gen_block(ir_node *block, void *data)
{
- ir_node *node;
(void) data;
if (! is_Block(block))
return;
- be_gas_emit_block_name(block);
- be_emit_char(':');
-
- be_emit_write_line();
+ be_gas_begin_block(block, true);
sched_foreach(block, node) {
- amd64_emit_node(node);
+ be_emit_node(node);
}
}
blk_sched = be_create_block_schedule(irg);
- be_gas_emit_function_prolog(entity, 4);
+ be_gas_emit_function_prolog(entity, 4, NULL);
irg_block_walk_graph(irg, amd64_gen_labels, NULL, NULL);
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