+/**
+ * This file implements the node emitter.
+ *
+ * $Id$
+ */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "irop_t.h"
#include "irargs_t.h"
#include "irprog_t.h"
+#include "iredges_t.h"
#include "../besched.h"
+#include "../benode_t.h"
#include "ia32_emitter.h"
#include "gen_ia32_emitter.h"
static const arch_env_t *arch_env = NULL;
-/**
- * Emits registers and/or address mode of a binary operation.
- */
-char *ia32_emit_binop(const ir_node *n) {
- static char *buf = NULL;
-
- if (! buf) {
- buf = xcalloc(1, SNPRINTF_BUF_LEN);
- }
- else {
- memset(buf, 0, SNPRINTF_BUF_LEN);
- }
-
- switch(get_ia32_op_type(n)) {
- case ia32_Normal:
- if (get_ia32_cnst(n)) {
- lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%1D, %s", n, get_ia32_cnst(n));
- }
- else {
- lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%1D, %4S", n, n);
- }
- break;
- case ia32_am_Source:
- lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%1D, %s", n, ia32_emit_am(n));
- break;
- case ia32_am_Dest:
- lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%s, %4S", ia32_emit_am(n), n);
- break;
- default:
- assert(0 && "unsupported op type");
- }
-
- return buf;
-}
-
-/**
- * Emits registers and/or address mode of a unary operation.
- */
-char *ia32_emit_unop(const ir_node *n) {
- static char *buf = NULL;
-
- if (! buf) {
- buf = xcalloc(1, SNPRINTF_BUF_LEN);
- }
- else {
- memset(buf, 0, SNPRINTF_BUF_LEN);
- }
-
- switch(get_ia32_op_type(n)) {
- case ia32_Normal:
- lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%1D", n);
- break;
- case ia32_am_Dest:
- snprintf(buf, SNPRINTF_BUF_LEN, ia32_emit_am(n));
- break;
- default:
- assert(0 && "unsupported op type");
- }
-
- return buf;
-}
-
-/**
- * Emits adressmode.
- */
-char *ia32_emit_am(const ir_node *n) {
- ia32_am_flavour_t am_flav = get_ia32_am_flavour(n);
- int had_output = 0;
- char *s;
- int size;
- static struct obstack *obst = NULL;
-
- if (! obst) {
- obst = xcalloc(1, sizeof(*obst));
- }
- else {
- obstack_free(obst, NULL);
- }
-
- /* obstack_free with NULL results in an uninitialized obstack */
- obstack_init(obst);
-
- obstack_printf(obst, "[");
-
- if (am_flav & ia32_B) {
- lc_eoprintf(ia32_get_arg_env(), obst, "%1S", n);
- had_output = 1;
- }
-
- if (am_flav & ia32_I) {
- if (had_output) {
- obstack_printf(obst, "+");
- }
-
- lc_eoprintf(ia32_get_arg_env(), obst, "%2S", n);
-
- if (am_flav & ia32_S) {
- obstack_printf(obst, "*%d", 1 << get_ia32_am_scale(n));
- }
-
- had_output = 1;
- }
-
- if (am_flav & ia32_O) {
- obstack_printf(obst, get_ia32_am_offs(n));
- }
-
- obstack_printf(obst, "] ");
-
- size = obstack_object_size(obst);
- s = obstack_finish(obst);
- s[size - 1] = '\0';
-
- return s;
-}
-
/*************************************************************
* _ _ __ _ _
* (_) | | / _| | | | |
/**
* Returns the register at in position pos.
*/
-static const arch_register_t *get_in_reg(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;
/**
* Returns the register at out position pos.
*/
-static const arch_register_t *get_out_reg(ir_node *irn, int pos) {
+static const arch_register_t *get_out_reg(const ir_node *irn, int pos) {
ir_node *proj;
const arch_register_t *reg = NULL;
- assert(get_irn_n_edges(irn) > pos && "Invalid OUT position");
-
/* 1st case: irn is not of mode_T, so it has only */
/* one OUT register -> good */
/* 2nd case: irn is of mode_T -> collect all Projs and ask the */
return reg;
}
-/**
- * Returns the number of the in register at position pos.
- */
-int get_ia32_reg_nr(ir_node *irn, int pos, int in_out) {
- const arch_register_t *reg;
-
- if (in_out == 1) {
- reg = get_in_reg(irn, pos);
- }
- else {
- reg = get_out_reg(irn, pos);
- }
-
- return arch_register_get_index(reg);
-}
-
enum io_direction {
IN_REG,
OUT_REG
reg = get_in_reg(irn, pos);
}
else {
+ /* destination address mode nodes don't have outputs */
+ if (is_ia32_irn(irn) && get_ia32_op_type(irn) == ia32_AddrModeD) {
+ return "MEM";
+ }
+
reg = get_out_reg(irn, pos);
}
if (!X)
return lc_arg_append(app, occ, "(null)", 6);
- buf = get_ia32_reg_name(X, nr, occ->conversion == 'S' ? IN_REG : OUT_REG);
+ buf = get_ia32_reg_name(X, nr, occ->conversion == 'S' ? IN_REG : OUT_REG);
- lc_appendable_chadd(app, '%');
return lc_arg_append(app, occ, buf, strlen(buf));
}
/**
- * Returns the tarval or offset of an ia32 as a string.
+ * Returns the tarval, offset or scale of an ia32 as a string.
*/
static int ia32_const_to_str(lc_appendable_t *app,
const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
buf = get_ia32_am_offs(X);
}
- return lc_arg_append(app, occ, buf, strlen(buf));
+ return buf ? lc_arg_append(app, occ, buf, strlen(buf)) : 0;
}
/**
static int ia32_get_mode_suffix(lc_appendable_t *app,
const lc_arg_occ_t *occ, const lc_arg_value_t *arg)
{
- ir_node *X = arg->v_ptr;
+ ir_node *X = arg->v_ptr;
+ ir_mode *mode = get_irn_mode(X);
+
+ if (mode == mode_T) {
+ mode = is_ia32_AddrModeS(X) || is_ia32_AddrModeD(X) ? get_ia32_ls_mode(X) : get_ia32_res_mode(X);
+ }
if (!X)
return lc_arg_append(app, occ, "(null)", 6);
- if (get_mode_size_bits(get_irn_mode(X)) == 32)
- return lc_appendable_chadd(app, 's');
- else
- return lc_appendable_chadd(app, 'd');
+ if (mode_is_float(mode)) {
+ return lc_appendable_chadd(app, get_mode_size_bits(mode) == 32 ? 's' : 'd');
+ }
+ else {
+
+ return lc_appendable_chadd(app, mode_is_signed(mode) ? 's' : 'z');
+ }
}
/**
if(env == NULL) {
/* extend the firm printer */
env = firm_get_arg_env();
- //lc_arg_new_env();
lc_arg_register(env, "ia32:sreg", 'S', &ia32_reg_handler);
lc_arg_register(env, "ia32:dreg", 'D', &ia32_reg_handler);
return env;
}
+/**
+ * Emits registers and/or address mode of a binary operation.
+ */
+char *ia32_emit_binop(const ir_node *n, ia32_emit_env_t *env) {
+ static char *buf = NULL;
+
+ /* verify that this function is never called on non-AM supporting operations */
+ assert(get_ia32_am_support(n) != ia32_am_None && "emit binop expects addressmode support");
+
+ if (! buf) {
+ buf = xcalloc(1, SNPRINTF_BUF_LEN);
+ }
+ else {
+ memset(buf, 0, SNPRINTF_BUF_LEN);
+ }
+
+ switch(get_ia32_op_type(n)) {
+ case ia32_Normal:
+ if (get_ia32_cnst(n)) {
+ lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%3S, %s", n, get_ia32_cnst(n));
+ }
+ else {
+ const arch_register_t *in1 = get_in_reg(n, 2);
+ const arch_register_t *in2 = get_in_reg(n, 3);
+ const arch_register_t *out = get_ia32_n_res(n) > 0 ? get_out_reg(n, 0) : NULL;
+ const arch_register_t *in;
+
+ in = out ? (REGS_ARE_EQUAL(out, in2) ? in1 : in2) : in2;
+ out = out ? out : in1;
+
+ snprintf(buf, SNPRINTF_BUF_LEN, "%s, %s", \
+ arch_register_get_name(out), arch_register_get_name(in));
+ }
+ break;
+ case ia32_AddrModeS:
+ lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%4S, %s", n, ia32_emit_am(n, env));
+ break;
+ case ia32_AddrModeD:
+ if (get_ia32_cnst(n)) {
+ lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%s, %s", ia32_emit_am(n, env), get_ia32_cnst(n));
+ }
+ else {
+ const arch_register_t *in1 = get_in_reg(n, 2);
+ const char *reg_name;
+ ir_mode *mode = get_ia32_res_mode(n);
+
+ mode = mode ? mode : get_ia32_ls_mode(n);
+
+ switch(get_mode_size_bits(mode)) {
+ case 8:
+ reg_name = ia32_get_mapped_reg_name(env->isa->regs_8bit, in1);
+ break;
+ case 16:
+ reg_name = ia32_get_mapped_reg_name(env->isa->regs_16bit, in1);
+ break;
+ case 32:
+ reg_name = arch_register_get_name(in1);
+ break;
+ default:
+ assert(0 && "unsupported mode size");
+ break;
+ }
+
+ lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%s, %s", ia32_emit_am(n, env), reg_name);
+ }
+ break;
+ default:
+ assert(0 && "unsupported op type");
+ }
+
+ return buf;
+}
+
+/**
+ * Emits registers and/or address mode of a unary operation.
+ */
+char *ia32_emit_unop(const ir_node *n, ia32_emit_env_t *env) {
+ static char *buf = NULL;
-/*
+ if (! buf) {
+ buf = xcalloc(1, SNPRINTF_BUF_LEN);
+ }
+ else {
+ memset(buf, 0, SNPRINTF_BUF_LEN);
+ }
+
+ switch(get_ia32_op_type(n)) {
+ case ia32_Normal:
+ lc_esnprintf(ia32_get_arg_env(), buf, SNPRINTF_BUF_LEN, "%1D", n);
+ break;
+ case ia32_am_Dest:
+ snprintf(buf, SNPRINTF_BUF_LEN, ia32_emit_am(n, env));
+ break;
+ default:
+ assert(0 && "unsupported op type");
+ }
+
+ return buf;
+}
+
+/**
+ * Emits address mode.
+ */
+char *ia32_emit_am(const ir_node *n, ia32_emit_env_t *env) {
+ ia32_am_flavour_t am_flav = get_ia32_am_flavour(n);
+ int had_output = 0;
+ char *s;
+ int size;
+ static struct obstack *obst = NULL;
+ ir_mode *mode = get_ia32_ls_mode(n);
+
+ if (! is_ia32_Lea(n))
+ assert(mode && "AM node must have ls_mode attribute set.");
+
+ if (! obst) {
+ obst = xcalloc(1, sizeof(*obst));
+ }
+ else {
+ obstack_free(obst, NULL);
+ }
+
+ /* obstack_free with NULL results in an uninitialized obstack */
+ obstack_init(obst);
+
+ if (mode) {
+ switch (get_mode_size_bits(mode)) {
+ case 8:
+ obstack_printf(obst, "BYTE ");
+ break;
+ case 16:
+ obstack_printf(obst, "WORD ");
+ break;
+ default:
+ break;
+ }
+ }
+
+ obstack_printf(obst, "[");
+
+ if (am_flav & ia32_B) {
+ lc_eoprintf(ia32_get_arg_env(), obst, "%1S", n);
+ had_output = 1;
+ }
+
+ if (am_flav & ia32_I) {
+ if (had_output) {
+ obstack_printf(obst, "+");
+ }
+
+ lc_eoprintf(ia32_get_arg_env(), obst, "%2S", n);
+
+ if (am_flav & ia32_S) {
+ obstack_printf(obst, "*%d", 1 << get_ia32_am_scale(n));
+ }
+
+ had_output = 1;
+ }
+
+ if (am_flav & ia32_O) {
+ obstack_printf(obst, get_ia32_am_offs(n));
+ }
+
+ obstack_printf(obst, "] ");
+
+ size = obstack_object_size(obst);
+ s = obstack_finish(obst);
+ s[size - 1] = '\0';
+
+ return s;
+}
+
+
+
+/**
+ * Formated print of commands and comments.
+ */
+static void ia32_fprintf_format(FILE *F, char *cmd_buf, char *cmnt_buf) {
+ fprintf(F, "\t%-35s %-60s\n", cmd_buf, cmnt_buf);
+}
+
+
+
+/**
* Add a number to a prefix. This number will not be used a second time.
*/
static char *get_unique_label(char *buf, size_t buflen, const char *prefix) {
}
+
/*************************************************
* _ _ _
* (_) | | |
*
*************************************************/
+#undef IA32_DO_EMIT
+#define IA32_DO_EMIT ia32_fprintf_format(F, cmd_buf, cmnt_buf)
+
/*
* coding of conditions
*/
/**
* Emits the jump sequence for a conditional jump (cmp + jmp_true + jmp_false)
*/
-static void finish_CondJmp(FILE *F, ir_node *irn) {
+static void finish_CondJmp(FILE *F, const ir_node *irn) {
const ir_node *proj;
const ir_edge_t *edge;
char buf[SNPRINTF_BUF_LEN];
+ char cmd_buf[SNPRINTF_BUF_LEN];
+ char cmnt_buf[SNPRINTF_BUF_LEN];
edge = get_irn_out_edge_first(irn);
proj = get_edge_src_irn(edge);
assert(is_Proj(proj) && "CondJmp with a non-Proj");
if (get_Proj_proj(proj) == 1) {
- fprintf(F, "\tj%s %s\t\t\t/* cmp(a, b) == TRUE */\n",
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "j%s %s",
get_cmp_suffix(get_ia32_pncode(irn), !mode_is_signed(get_irn_mode(get_irn_n(irn, 0)))),
get_cfop_target(proj, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; cmp(a, b) == TRUE");
}
else {
- fprintf(F, "\tjn%s %s\t\t\t/* cmp(a, b) == FALSE */\n",
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jn%s %s",
get_cmp_suffix(get_ia32_pncode(irn), !mode_is_signed(get_irn_mode(get_irn_n(irn, 0)))),
get_cfop_target(proj, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; cmp(a, b) == FALSE");
}
+ IA32_DO_EMIT;
+
edge = get_irn_out_edge_next(irn, edge);
if (edge) {
proj = get_edge_src_irn(edge);
assert(is_Proj(proj) && "CondJmp with a non-Proj");
- fprintf(F, "\tjmp %s\t\t\t/* otherwise */\n", get_cfop_target(proj, buf));
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(proj, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; otherwise");
+
+ IA32_DO_EMIT;
}
}
/**
- * Emits code for conditional jump with two variables.
+ * Emits code for conditional jump.
*/
-static void emit_ia32_CondJmp(ir_node *irn, emit_env_t *env) {
+static void CondJmp_emitter(const ir_node *irn, ia32_emit_env_t *env) {
FILE *F = env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN];
+ char cmnt_buf[SNPRINTF_BUF_LEN];
- lc_efprintf(ia32_get_arg_env(), F, "\tcmp %2S, %1S\t\t\t/* CondJmp(%+F, %+F) */\n", irn, irn,
- get_irn_n(irn, 0), get_irn_n(irn, 1));
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cmp %s", ia32_emit_binop(irn, env));
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F", irn);
+ IA32_DO_EMIT;
finish_CondJmp(F, irn);
}
/**
- * Emits code for conditional jump with immediate.
+ * Emits code for conditional jump with two variables.
*/
-void emit_ia32_CondJmp_i(ir_node *irn, emit_env_t *env) {
- FILE *F = env->out;
+static void emit_ia32_CondJmp(const ir_node *irn, ia32_emit_env_t *env) {
+ CondJmp_emitter(irn, env);
+}
- lc_efprintf(ia32_get_arg_env(), F, "\tcmp %C, %1S\t\t\t/* CondJmp_i(%+F) */\n", irn, irn, get_irn_n(irn, 0));
- finish_CondJmp(F, irn);
+/**
+ * Emits code for conditional jump with immediate.
+ */
+void emit_ia32_CondJmp_i(const ir_node *irn, ia32_emit_env_t *env) {
+ CondJmp_emitter(irn, env);
}
* possible otherwise a cmp-jmp cascade). Port from
* cggg ia32 backend
*/
-void emit_ia32_SwitchJmp(const ir_node *irn, emit_env_t *emit_env) {
+void emit_ia32_SwitchJmp(const ir_node *irn, ia32_emit_env_t *emit_env) {
unsigned long interval;
char buf[SNPRINTF_BUF_LEN];
int last_value, i, pn, do_jmp_tbl = 1;
const ir_edge_t *edge;
const lc_arg_env_t *env = ia32_get_arg_env();
FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
/* fill the table structure */
tbl.label = xmalloc(SNPRINTF_BUF_LEN);
if (do_jmp_tbl) {
/* emit the table */
if (tbl.min_value != 0) {
- fprintf(F, "\tcmpl %lu, -%d", interval, tbl.min_value);
- lc_efprintf(env, F, "(%1S)\t\t/* first switch value is not 0 */\n", irn);
+ lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "cmpl %lu, -%d(%1S)",
+ interval, tbl.min_value, irn);
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; first switch value is not 0");
+
+ IA32_DO_EMIT;
}
else {
- fprintf(F, "\tcmpl %lu, ", interval);
- lc_efprintf(env, F, "%1S\t\t\t/* compare for switch */\n", irn);
+ lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "cmpl %lu, %1S", interval, irn);
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; compare for switch");
+
+ IA32_DO_EMIT;
}
- fprintf(F, "\tja %s\t\t\t/* default jump if out of range */\n", get_cfop_target(tbl.defProj, buf));
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "ja %s", get_cfop_target(tbl.defProj, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; default jump if out of range ");
+ IA32_DO_EMIT;
if (tbl.num_branches > 1) {
/* create table */
- //fprintf(F, "\tjmp *%s", tbl.label);
- lc_efprintf(env, F, "\tjmp *%s(,%1S,4)\t\t/* get jump table entry as target */\n", tbl.label, irn);
+ lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "jmp [%1S*4+%s]", irn, tbl.label);
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; get jump table entry as target");
+ IA32_DO_EMIT;
- fprintf(F, "\t.section\t.rodata\t\t/* start jump table */\n");
+ fprintf(F, "\t.section\t.rodata\n");
fprintf(F, "\t.align 4\n");
fprintf(F, "%s:\n", tbl.label);
- fprintf(F, "\t.long %s\t\t\t/* case %d */\n", get_cfop_target(tbl.branches[0].target, buf), tbl.branches[0].value);
+
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, ".long %s", get_cfop_target(tbl.branches[0].target, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* case %d */\n", tbl.branches[0].value);
+ IA32_DO_EMIT;
last_value = tbl.branches[0].value;
for (i = 1; i < tbl.num_branches; ++i) {
while (++last_value < tbl.branches[i].value) {
- fprintf(F, "\t.long %s\t\t/* default case */\n", get_cfop_target(tbl.defProj, buf));
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, ".long %s", get_cfop_target(tbl.defProj, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; default case");
+ IA32_DO_EMIT;
}
- fprintf(F, "\t.long %s\t\t\t/* case %d */\n", get_cfop_target(tbl.branches[i].target, buf), last_value);
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, ".long %s", get_cfop_target(tbl.branches[i].target, buf), last_value);
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; case %d", last_value);
+ IA32_DO_EMIT;
}
- fprintf(F, "\t.text\t\t\t\t/* end of jump table */\n");
+ fprintf(F, "\t.text");
}
else {
/* one jump is enough */
- fprintf(F, "\tjmp %s\t\t/* only one case given */\n", get_cfop_target(tbl.branches[0].target, buf));
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(tbl.branches[0].target, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; only one case given");
+ IA32_DO_EMIT;
}
}
else { // no jump table
for (i = 0; i < tbl.num_branches; ++i) {
- fprintf(F, "\tcmpl %d, ", tbl.branches[i].value);
- lc_efprintf(env, F, "%1S", irn);
- fprintf(F, "\t\t\t/* case %d */\n", tbl.branches[i].value);
+ lc_esnprintf(env, cmd_buf, SNPRINTF_BUF_LEN, "cmpl %d, %1S", tbl.branches[i].value, irn);
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; case %d", i);
+ IA32_DO_EMIT;
fprintf(F, "\tje %s\n", get_cfop_target(tbl.branches[i].target, buf));
}
- fprintf(F, "\tjmp %s\t\t\t/* default case */\n", get_cfop_target(tbl.defProj, buf));
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(tbl.defProj, buf));
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; default case");
+ IA32_DO_EMIT;
}
if (tbl.label)
/**
* Emits code for a unconditional jump.
*/
-void emit_Jmp(ir_node *irn, emit_env_t *env) {
+void emit_Jmp(const ir_node *irn, ia32_emit_env_t *env) {
FILE *F = env->out;
+ char buf[SNPRINTF_BUF_LEN], cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
- char buf[SNPRINTF_BUF_LEN];
- ir_fprintf(F, "\tjmp %s\t\t\t/* Jmp(%+F) */\n", get_cfop_target(irn, buf), get_irn_link(irn));
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "jmp %s", get_cfop_target(irn, buf), get_irn_link(irn));
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F(%+F)", irn, get_irn_link(irn));
+ IA32_DO_EMIT;
}
/**
* Emits code for a proj -> node
*/
-void emit_Proj(ir_node *irn, emit_env_t *env) {
+void emit_Proj(const ir_node *irn, ia32_emit_env_t *env) {
ir_node *pred = get_Proj_pred(irn);
if (get_irn_op(pred) == op_Start) {
* |_| |___/
**********************************/
+/**
+ * Emit movsb/w instructions to make mov count divideable by 4
+ */
static void emit_CopyB_prolog(FILE *F, int rem, int size) {
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
+
fprintf(F, "\t/* memcopy %d bytes*/\n", size);
- fprintf(F, "\tcld\t\t\t\t/* copy direction forward*/\n");
+
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cld");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "/* copy direction forward*/");
+ IA32_DO_EMIT;
switch(rem) {
case 1:
- fprintf(F, "\tmovsb\t\t\t\t/* memcopy remainder 1 */\n");
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsb");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 1");
break;
case 2:
- fprintf(F, "\tmovsw\t\t\t\t/* memcopy remainder 2 */\n");
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsw");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 2");
break;
case 3:
- fprintf(F, "\tmovsb\t\t\t\t/* memcopy remainder 3 */\n");
- fprintf(F, "\tmovsw\t\t\t\t/* memcopy remainder 3 */\n");
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsb");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 3");
+ IA32_DO_EMIT;
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsw");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy remainder 3");
break;
}
+
+ IA32_DO_EMIT;
}
-void emit_ia32_CopyB(ir_node *irn, emit_env_t *emit_env) {
+/**
+ * Emit rep movsd instruction for memcopy.
+ */
+void emit_ia32_CopyB(const ir_node *irn, ia32_emit_env_t *emit_env) {
FILE *F = emit_env->out;
tarval *tv = get_ia32_Immop_tarval(irn);
int rem = get_tarval_long(tv);
int size = get_tarval_long(get_ia32_Immop_tarval(get_irn_n(irn, 2)));
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
emit_CopyB_prolog(F, rem, size);
- fprintf(F, "\trep movsd\t\t\t\t/* memcopy */\n");
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "rep movsd");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy");
+ IA32_DO_EMIT;
}
-void emit_ia32_CopyB_i(ir_node *irn, emit_env_t *emit_env) {
+/**
+ * Emits unrolled memcopy.
+ */
+void emit_ia32_CopyB_i(const ir_node *irn, ia32_emit_env_t *emit_env) {
tarval *tv = get_ia32_Immop_tarval(irn);
int size = get_tarval_long(tv);
FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
emit_CopyB_prolog(F, size & 0x3, size);
size >>= 2;
while (size--) {
- fprintf(F, "\tmovsd\t\t\t\t/* memcopy unrolled */\n");
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "movsd");
+ snprintf(cmnt_buf, SNPRINTF_BUF_LEN, "; memcopy unrolled");
+ IA32_DO_EMIT;
}
}
-/********************
- * _____ _ _
- * / ____| | | |
- * | | __ _| | |
- * | | / _` | | |
- * | |___| (_| | | |
- * \_____\__,_|_|_|
- *
- ********************/
-
-void emit_ia32_Call(ir_node *irn, emit_env_t *emit_env) {
-}
-
-/***********************************************************************************
- * _ __ _
- * (_) / _| | |
- * _ __ ___ __ _ _ _ __ | |_ _ __ __ _ _ __ ___ _____ _____ _ __| | __
- * | '_ ` _ \ / _` | | '_ \ | _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
- * | | | | | | (_| | | | | | | | | | | (_| | | | | | | __/\ V V / (_) | | | <
- * |_| |_| |_|\__,_|_|_| |_| |_| |_| \__,_|_| |_| |_|\___| \_/\_/ \___/|_| |_|\_\
+/***************************
+ * _____
+ * / ____|
+ * | | ___ _ ____ __
+ * | | / _ \| '_ \ \ / /
+ * | |___| (_) | | | \ V /
+ * \_____\___/|_| |_|\_/
*
- ***********************************************************************************/
+ ***************************/
/**
- * Enters the emitter functions for handled nodes into the generic
- * pointer of an opcode.
+ * Emit code for conversions (I, FP), (FP, I) and (FP, FP).
*/
-void ia32_register_emitters(void) {
- int i;
+static void emit_ia32_Conv(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ const lc_arg_env_t *env = ia32_get_arg_env();
+ char *from, *to, buf[64];
+ ir_mode *src_mode, *tgt_mode;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
-#define BEGIN() if (0)
-#define IA32_EMIT(a) else if (op_ia32_##a == op) op->ops.generic = (op_func)emit_ia32_##a
-#define EMIT(a) else if (op_##a == op) op->ops.generic = (op_func)emit_##a
-#define END() else op->ops.generic = (op_func)NULL
+ src_mode = is_ia32_AddrModeS(irn) ? get_ia32_ls_mode(irn) : get_irn_mode(get_irn_n(irn, 2));
+ tgt_mode = get_ia32_res_mode(irn);
+
+ from = mode_is_float(src_mode) ? (get_mode_size_bits(src_mode) == 32 ? "ss" : "sd") : "si";
+ to = mode_is_float(tgt_mode) ? (get_mode_size_bits(tgt_mode) == 32 ? "ss" : "sd") : "si";
+
+ switch(get_ia32_op_type(irn)) {
+ case ia32_Normal:
+ lc_esnprintf(env, buf, sizeof(buf), "%1D, %3S", irn, irn);
+ break;
+ case ia32_AddrModeS:
+ lc_esnprintf(env, buf, sizeof(buf), "%1D, %s", irn, ia32_emit_am(irn, emit_env));
+ break;
+ default:
+ assert(0 && "unsupported op type for Conv");
+ }
+
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "cvt%s2%s %s", from, to, buf);
+ lc_esnprintf(env, cmnt_buf, SNPRINTF_BUF_LEN, "; %+F(%+F, %+F)", irn, src_mode, tgt_mode);
+ IA32_DO_EMIT;
+}
+
+void emit_ia32_Conv_I2FP(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ emit_ia32_Conv(irn, emit_env);
+}
- for (i = get_irp_n_opcodes() - 1; i >= 0; --i) {
- ir_op *op = get_irp_opcode(i);
+void emit_ia32_Conv_FP2I(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ emit_ia32_Conv(irn, emit_env);
+}
- BEGIN();
- /* generated int emitter functions */
- IA32_EMIT(Const);
+void emit_ia32_Conv_FP2FP(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ emit_ia32_Conv(irn, emit_env);
+}
- IA32_EMIT(Add);
- IA32_EMIT(Sub);
- IA32_EMIT(Minus);
- IA32_EMIT(Inc);
- IA32_EMIT(Dec);
- IA32_EMIT(Max);
- IA32_EMIT(Min);
- IA32_EMIT(CMov);
- IA32_EMIT(And);
- IA32_EMIT(Or);
- IA32_EMIT(Eor);
- IA32_EMIT(Not);
+/*******************************************
+ * _ _
+ * | | | |
+ * | |__ ___ _ __ ___ __| | ___ ___
+ * | '_ \ / _ \ '_ \ / _ \ / _` |/ _ \/ __|
+ * | |_) | __/ | | | (_) | (_| | __/\__ \
+ * |_.__/ \___|_| |_|\___/ \__,_|\___||___/
+ *
+ *******************************************/
- IA32_EMIT(Shl);
- IA32_EMIT(Shr);
- IA32_EMIT(Shrs);
- IA32_EMIT(RotL);
- IA32_EMIT(RotR);
+/**
+ * Emits a backend call
+ */
+void emit_be_Call(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ entity *ent = be_Call_get_entity(irn);
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
- IA32_EMIT(Lea);
+ if (ent) {
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, "call %s", get_entity_name(ent));
+ }
+ else {
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "%1D", get_irn_n(irn, be_pos_Call_ptr));
+ }
- IA32_EMIT(Mul);
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F (be_Call)", irn);
- IA32_EMIT(Cdq);
- IA32_EMIT(DivMod);
+ IA32_DO_EMIT;
+}
- IA32_EMIT(Store);
- IA32_EMIT(Load);
+/**
+ * Emits code to increase stack pointer.
+ */
+void emit_be_IncSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ unsigned offs = be_get_IncSP_offset(irn);
+ be_stack_dir_t dir = be_get_IncSP_direction(irn);
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
+
+ if (offs) {
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "add %1S,%s%u", irn,
+ (dir == be_stack_dir_along) ? " -" : " ", offs);
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F (IncSP)", irn);
+ }
+ else {
+ snprintf(cmd_buf, SNPRINTF_BUF_LEN, " ");
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; omitted %+F (IncSP) with 0", irn);
+ }
- IA32_EMIT(CopyB);
- IA32_EMIT(CopyB_i);
+ IA32_DO_EMIT;
+}
- /* generated floating point emitter */
- IA32_EMIT(fConst);
+/**
+ * Emits code to set stack pointer.
+ */
+void emit_be_SetSP(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
- IA32_EMIT(fAdd);
- IA32_EMIT(fSub);
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %3S", irn, irn);
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F (restore SP)", irn);
+ IA32_DO_EMIT;
+}
- IA32_EMIT(fMul);
- IA32_EMIT(fDiv);
+/**
+ * Emits code for Copy.
+ */
+void emit_be_Copy(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
- IA32_EMIT(fMin);
- IA32_EMIT(fMax);
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "mov %1D, %1S", irn, irn);
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F", irn);
+ IA32_DO_EMIT;
+}
- IA32_EMIT(fLoad);
- IA32_EMIT(fStore);
+/**
+ * Emits code for exchange.
+ */
+void emit_be_Perm(const ir_node *irn, ia32_emit_env_t *emit_env) {
+ FILE *F = emit_env->out;
+ char cmd_buf[SNPRINTF_BUF_LEN], cmnt_buf[SNPRINTF_BUF_LEN];
- /* other emitter functions */
- IA32_EMIT(CondJmp);
- IA32_EMIT(SwitchJmp);
- IA32_EMIT(Call);
+ lc_esnprintf(ia32_get_arg_env(), cmd_buf, SNPRINTF_BUF_LEN, "xchg %1S, %2S", irn, irn);
+ lc_esnprintf(ia32_get_arg_env(), cmnt_buf, SNPRINTF_BUF_LEN, "; %+F(%1A, %2A)", irn, irn, irn);
+ IA32_DO_EMIT;
+}
- EMIT(Jmp);
- EMIT(Proj);
+/***********************************************************************************
+ * _ __ _
+ * (_) / _| | |
+ * _ __ ___ __ _ _ _ __ | |_ _ __ __ _ _ __ ___ _____ _____ _ __| | __
+ * | '_ ` _ \ / _` | | '_ \ | _| '__/ _` | '_ ` _ \ / _ \ \ /\ / / _ \| '__| |/ /
+ * | | | | | | (_| | | | | | | | | | | (_| | | | | | | __/\ V V / (_) | | | <
+ * |_| |_| |_|\__,_|_|_| |_| |_| |_| \__,_|_| |_| |_|\___| \_/\_/ \___/|_| |_|\_\
+ *
+ ***********************************************************************************/
- END();
- }
+/**
+ * Enters the emitter functions for handled nodes into the generic
+ * pointer of an opcode.
+ */
+static void ia32_register_emitters(void) {
+
+#define IA32_EMIT(a) op_ia32_##a->ops.generic = (op_func)emit_ia32_##a
+#define EMIT(a) op_##a->ops.generic = (op_func)emit_##a
+#define BE_EMIT(a) op_be_##a->ops.generic = (op_func)emit_be_##a
+
+ /* first clear the generic function pointer for all ops */
+ clear_irp_opcodes_generic_func();
+
+ /* register all emitter functions defined in spec */
+ ia32_register_spec_emitters();
+
+ /* other ia32 emitter functions */
+ IA32_EMIT(CondJmp);
+ IA32_EMIT(SwitchJmp);
+ IA32_EMIT(CopyB);
+ IA32_EMIT(CopyB_i);
+ IA32_EMIT(Conv_I2FP);
+ IA32_EMIT(Conv_FP2I);
+ IA32_EMIT(Conv_FP2FP);
+
+ /* benode emitter */
+ BE_EMIT(Call);
+ BE_EMIT(IncSP);
+ BE_EMIT(SetSP);
+ BE_EMIT(Copy);
+ BE_EMIT(Perm);
+
+ /* firm emitter */
+ EMIT(Jmp);
+ EMIT(Proj);
-#undef BEGIN
#undef IA32_EMIT
+#undef BE_EMIT
#undef EMIT
-#undef END
-
}
/**
* Emits code for a node.
*/
-static void ia32_emit_node(ir_node *irn, void *env) {
- emit_env_t *emit_env = env;
- firm_dbg_module_t *mod = emit_env->mod;
- FILE *F = emit_env->out;
- ir_op *op = get_irn_op(irn);
+static void ia32_emit_node(const ir_node *irn, void *env) {
+ ia32_emit_env_t *emit_env = env;
+ firm_dbg_module_t *mod = emit_env->mod;
+ FILE *F = emit_env->out;
+ ir_op *op = get_irn_op(irn);
DBG((mod, LEVEL_1, "emitting code for %+F\n", irn));
- if (op->ops.generic) {
- void (*emit)(ir_node *, void *) = (void (*)(ir_node *, void *))op->ops.generic;
- (*emit)(irn, env);
- }
-
- ir_fprintf(F, "\t\t\t\t\t/* %+F */\n", irn);
+ if (op->ops.generic) {
+ void (*emit)(const ir_node *, void *) = (void (*)(const ir_node *, void *))op->ops.generic;
+ (*emit)(irn, env);
+ }
+ else {
+ ir_fprintf(F, "\t%35s ; %+F \n", " ", irn);
+ }
}
/**
* and emits code for each node.
*/
static void ia32_gen_block(ir_node *block, void *env) {
- ir_node *irn;
+ const ir_node *irn;
if (! is_Block(block))
return;
- fprintf(((emit_env_t *)env)->out, "BLOCK_%ld:\n", get_irn_node_nr(block));
+ fprintf(((ia32_emit_env_t *)env)->out, "BLOCK_%ld:\n", get_irn_node_nr(block));
sched_foreach(block, irn) {
ia32_emit_node(irn, env);
}
/**
* Emits code for function start.
*/
-void ia32_emit_start(FILE *F, ir_graph *irg) {
- const char *irg_name = get_entity_name(get_irg_entity(irg));
+static void ia32_emit_func_prolog(FILE *F, ir_graph *irg) {
+ entity *irg_ent = get_irg_entity(irg);
+ const char *irg_name = get_entity_name(irg_ent);
- fprintf(F, "\t.text\n");
- fprintf(F, ".globl %s\n", irg_name);
- fprintf(F, "\t.type\t%s, @function\n", irg_name);
+// fprintf(F, "\t.text\n");
+ if (get_entity_visibility(irg_ent) == visibility_external_visible) {
+ fprintf(F, "global %s\n", irg_name);
+ }
+// fprintf(F, "\t.type\t%s, @function\n", irg_name);
fprintf(F, "%s:\n", irg_name);
}
/**
* Emits code for function end
*/
-void ia32_emit_end(FILE *F, ir_graph *irg) {
+static void ia32_emit_func_epilog(FILE *F, ir_graph *irg) {
const char *irg_name = get_entity_name(get_irg_entity(irg));
fprintf(F, "\tret\n");
- fprintf(F, "\t.size\t%s, .-%s\n\n", irg_name, irg_name);
+ //printf(F, "\t.size\t%s, .-%s\n\n", irg_name, irg_name);
}
/**
* Sets labels for control flow nodes (jump target)
* TODO: Jump optimization
*/
-void ia32_gen_labels(ir_node *block, void *env) {
+static void ia32_gen_labels(ir_node *block, void *env) {
ir_node *pred;
int n = get_Block_n_cfgpreds(block);
* Main driver. Emits the code for one routine.
*/
void ia32_gen_routine(FILE *F, ir_graph *irg, const ia32_code_gen_t *cg) {
- emit_env_t emit_env;
+ ia32_emit_env_t emit_env;
emit_env.mod = firm_dbg_register("ir.be.codegen.ia32");
emit_env.out = F;
emit_env.arch_env = cg->arch_env;
emit_env.cg = cg;
+ emit_env.isa = (ia32_isa_t *)cg->arch_env->isa;
/* set the global arch_env (needed by print hooks) */
arch_env = cg->arch_env;
- ia32_emit_start(F, irg);
+ ia32_register_emitters();
+
+ ia32_emit_func_prolog(F, irg);
irg_block_walk_graph(irg, ia32_gen_labels, NULL, &emit_env);
irg_walk_blkwise_graph(irg, NULL, ia32_gen_block, &emit_env);
- ia32_emit_end(F, irg);
+ ia32_emit_func_epilog(F, irg);
}
projects / libfirm / blobdiff