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asm.c
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asm.c
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#ifdef NGDEBUG
#include <assert.h>
#endif
#include <stdio.h>
#include "asm.h"
#include "global.h"
#include "stab.h"
#include "env.h"
#include "syntree.h"
#define TO 0
#define FROM 1
FILE *fasm;
struct Env *curr_func_env;
char postmp[1024];
char strtmp[1024];
char eptmp[32];
int label_cnt = 0;
static void asm_global_var(struct Trie_node *node)
{
if (node->symbol) {
struct Stab *symbol = node->symbol;
if (symbol->funcno < 0) {
if (symbol->type->kind == T_STRUCT) {
if (symbol != symbol->type->struct_sym) {
fprintf(fasm, "\t.comm\t%s,%zd,%zd\n", symbol->name, symbol->size, 4);
}
} else if (symbol->arysize_cnt) {
fprintf(fasm, "\t.comm\t%s,%zd,%zd\n", symbol->name, symbol->size * symbol->arysize_list->size, 32);
} else {
fprintf(fasm, "\t.comm\t%s,%zd,%zd\n", symbol->name, symbol->size, symbol->size);
symbol->offset = -1;
}
}
}
int i;
for (i = 0; i < 53; i++) {
if (node->next[i]) {
asm_global_var(node->next[i]);
}
}
}
void asm_head()
{
int i;
for (i = 0; i < str_cnt; i++) {
fprintf(fasm, ".str%d:\t.string\t%s\n", i, strings[i]);
}
for (i = 0; i < dbl_cnt; i++) {
fprintf(fasm, ".dbl%d:\t.long\t%d\n\t.long\t%d\n", i, *(int *)(dbl + i), *((int *)(dbl + i) + 1));
}
asm_global_var(global_env->trie_root);
fprintf(fasm, "\n");
fprintf(fasm, "\t.text\n");
}
static void translate_function(struct Syntree_node *);
static void translate_statement(struct Syntree_node *);
static void translate_expression(struct Syntree_node *);
static char *mov_action(enum Type_kind kind)
{
switch (kind) {
case T_CHAR: return "movb";
case T_STR: return "movl";
case T_INT: return "movl";
case T_FLOAT: return "movl";
default: return "kidding";
}
return 0;
}
static char *type_register(enum Type_kind kind)
{
switch (kind) {
case T_CHAR: return "%cl";
case T_INT: return "%ecx";
case T_STR: return "%ecx";
case T_FLOAT: return "%ecx";
default: return "kidding";
}
return 0;
}
static char *get_esp(size_t offset)
{
if (offset) {
sprintf(eptmp, "%zd(%%esp)", offset);
} else {
sprintf(eptmp, "(%%esp)");
}
return eptmp;
}
static char *get_ebp(size_t offset)
{
sprintf(eptmp, "%zd(%%ebp)", offset + 8);
return eptmp;
}
static void get_pos(struct Syntree_node *sn, int dir)
{
#ifdef NGDEBUG
assert(sn->nkind == K_EXPR);
#endif
switch (sn->se.expr) {
case K_CHAR:
sprintf(postmp, "$%d", sn->info.c);
break;
case K_STR:
sprintf(postmp, "$.str%d", sn->info.strno);
break;
case K_INT:
sprintf(postmp, "$%d", sn->info.val);
break;
case K_DOUBLE:
sprintf(postmp, ".dbl%d", sn->info.dblno);
break;
/* TODO */
case K_SYM:
{
int offset = sn->info.symbol->offset;
if (offset == -1) {
sprintf(eptmp, "%s", sn->info.symbol->name);
} else if (offset < curr_func_env->param_size) {
get_ebp(offset);
} else {
get_esp(offset + curr_func_env->tmp_size + curr_func_env->call_size - curr_func_env->param_size);
}
if (dir == TO || sn->ntype.kind == T_DOUBLE) {
sprintf(postmp, "%s", eptmp);
} else {
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(sn->ntype.kind), eptmp, type_register(sn->ntype.kind));
sprintf(postmp, "%s", type_register(sn->ntype.kind));
}
break;
}
case K_PTR:
{
int ptrcnt = 0;
struct Syntree_node *tmp;
for (tmp = sn; tmp->se.expr == K_PTR; tmp = tmp->child[0]) {
ptrcnt++;
}
get_pos(tmp, TO);
if (tmp->nkind == K_EXPR && tmp->se.expr == K_SYM && tmp->info.symbol->offset == -1) {
fprintf(fasm, "\tleal\t%s, %%edx\n", postmp);
} else {
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
}
int i;
for (i = 1; i < ptrcnt; i++) {
fprintf(fasm, "\tmovl\t(%%edx), %%edx\n");
}
if (dir == TO) {
sprintf(postmp, "(%%edx)");
} else {
fprintf(fasm, "\tmovl\t(%%edx), %%edx\n");
sprintf(postmp, "%%edx");
}
break;
}
case K_ARY:
{
int arycnt = 0, arysize[16];
struct Arysize_entry *ae;
for (ae = sn->info.symbol->arysize_list; ae; ae = ae->next) {
arysize[arycnt++] = ae->size;
}
int aryoffset = 1;
struct Syntree_node *tmp;
fprintf(fasm, "\tsarl\t$31, %%edx\n");
for (tmp = sn; tmp->se.expr != K_SYM; tmp = tmp->child[0]) {
asm_translate(tmp->child[1]);
get_pos(tmp->child[1], TO);
if (aryoffset != 1) {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
fprintf(fasm, "\timull\t$%d, %%eax\n", aryoffset);
fprintf(fasm, "\taddl\t%%eax, %%edx\n");
} else {
fprintf(fasm, "\taddl\t%s, %%edx\n", postmp);
}
aryoffset = arysize[--arycnt];
}
int offset = sn->info.symbol->offset;
if (offset == -1) {
sprintf(eptmp, "%s(,%%edx,%zd)", sn->info.symbol->name, sn->info.symbol->size);
} else if (offset < curr_func_env->param_size) {
sprintf(eptmp, "-%zd(%%ebp,%%edx,%zd)", offset + 8, sn->info.symbol->size);
} else {
sprintf(eptmp, "%zd(%%esp,%%edx,%zd)", offset + curr_func_env->tmp_size + curr_func_env->call_size - curr_func_env->param_size, sn->info.symbol->size);
}
if (dir == TO || sn->ntype.kind == T_DOUBLE) {
sprintf(postmp, "%s", eptmp);
} else {
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(sn->ntype.kind), eptmp, type_register(sn->ntype.kind));
sprintf(postmp, "%s", type_register(sn->ntype.kind));
}
break;
}
case K_DOT:
{
int offset = sn->child[0]->info.symbol->offset;
if (offset == -1) {
sprintf(eptmp, "%s+%zd", sn->child[0]->info.symbol->name, sn->child[1]->info.symbol->offset);
} else if (offset < curr_func_env->param_size) {
get_ebp(offset + sn->child[1]->info.symbol->offset);
} else {
get_esp(offset + curr_func_env->tmp_size + curr_func_env->call_size - curr_func_env->param_size + sn->child[1]->info.symbol->offset);
}
if (dir == TO || sn->ntype.kind == T_DOUBLE) {
sprintf(postmp, "%s", eptmp);
} else {
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(sn->ntype.kind), eptmp, type_register(sn->ntype.kind));
sprintf(postmp, "%s", type_register(sn->ntype.kind));
}
break;
}
case K_CALL:
case K_OPR:
{
get_esp(sn->tmppos);
if (dir == TO || sn->ntype.kind == T_DOUBLE) {
sprintf(postmp, "%s", eptmp);
} else if (sn->ntype.kind != T_DOUBLE) {
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(sn->ntype.kind), eptmp, type_register(sn->ntype.kind));
sprintf(postmp, "%s", type_register(sn->ntype.kind));
}
}
break;
}
}
void asm_translate(struct Syntree_node *root)
{
if (root == NULL) return ;
struct Syntree_node *sn;
for (sn = root; sn; sn = sn->next) {
switch (sn->nkind) {
case K_FUNC:
translate_function(sn);
break;
case K_STMT:
translate_statement(sn);
break;
case K_EXPR:
translate_expression(sn);
}
}
}
void translate_function(struct Syntree_node *node)
{
curr_func_env = node->child[0]->env;
fprintf(fasm, "\n");
fprintf(fasm, "\t.globl\t%s\n", node->info.symbol->name);
fprintf(fasm, "%s:\n", node->info.symbol->name);
fprintf(fasm, "\tpushl\t%%ebp\n");
fprintf(fasm, "\tmovl\t%%esp, %%ebp\n");
size_t es = env_size(curr_func_env);
if (es) {
fprintf(fasm, "\tsubl\t$%zd, %%esp\n", es);
}
asm_translate(node->child[0]);
fprintf(fasm, ".ret%d:\n", node->info.symbol->funcno);
if (es) {
fprintf(fasm, "\taddl\t$%zd, %%esp\n", es);
}
fprintf(fasm, "\tpopl\t%%ebp\n");
fprintf(fasm, "\tret\n");
}
void translate_statement(struct Syntree_node *node)
{
switch (node->se.stmt) {
case K_IF:
{
asm_translate(node->child[0]);
get_pos(node->child[0], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
sprintf(postmp, "%%eax");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
int next_label = label_cnt++;
fprintf(fasm, "\tjz\t.L%d\n", next_label);
asm_translate(node->child[1]);
fprintf(fasm, ".L%d:\n", next_label);
break;
}
case K_IFELSE:
{
asm_translate(node->child[0]);
get_pos(node->child[0], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
sprintf(postmp, "%%eax");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
int else_label = label_cnt++;
int next_label = label_cnt++;
fprintf(fasm, "\tjz\t.L%d\n", else_label);
asm_translate(node->child[1]);
fprintf(fasm, "\tjmp\t.L%d\n", next_label);
fprintf(fasm, ".L%d:\n", else_label);
asm_translate(node->child[2]);
fprintf(fasm, ".L%d:\n", next_label);
break;
}
case K_WHILE:
{
int start_label = label_cnt++;
int next_label = label_cnt++;
fprintf(fasm, ".L%d:\n", start_label);
asm_translate(node->child[0]);
get_pos(node->child[0], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
sprintf(postmp, "%%eax");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
fprintf(fasm, "\tjz\t.L%d\n", next_label);
asm_translate(node->child[1]);
fprintf(fasm, "\tjmp\t.L%d\n", start_label);
fprintf(fasm, ".L%d:\n", next_label);
break;
}
case K_DO:
/* TODO */
case K_FOR:
{
int judge_label = label_cnt++;
int body_label = label_cnt++;
asm_translate(node->child[0]);
fprintf(fasm, "\tjmp\t.L%d\n", judge_label);
fprintf(fasm, ".L%d:\n", body_label);
asm_translate(node->child[3]);
asm_translate(node->child[2]);
fprintf(fasm, ".L%d:\n", judge_label);
if (node->child[1]) {
asm_translate(node->child[1]);
get_pos(node->child[1], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
sprintf(postmp, "%%eax");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
fprintf(fasm, "\tjnz\t.L%d\n", body_label);
} else {
fprintf(fasm, "\tjmp\t.L%d\n", body_label);
}
break;
}
case K_SWITCH:
/* TODO */
case K_GOTO:
/* TODO */
case K_RET:
if (node->child_count) {
asm_translate(node->child[0]);
get_pos(node->child[0], TO);
if (node->info.symbol->type->kind == T_CHAR) {
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
} else if (node->info.symbol->type->kind == T_INT) {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
}
}
fprintf(fasm, "\tjmp\t.ret%d\n", node->info.symbol->funcno);
}
}
void translate_expression(struct Syntree_node *node)
{
int i;
for (i = 0; i < node->child_count; i++) {
asm_translate(node->child[i]);
}
node->tmppos += curr_func_env->call_size;
switch (node->se.expr) {
case K_CALL:
{
size_t offset = 0;
struct Syntree_node *sn = node->child[0];
if (sn) {
while (sn->se.expr == K_OPR && sn->info.token == COMMA) {
get_pos(sn->child[0], FROM);
get_esp(offset);
if (sn->child[0]->ntype.kind != T_DOUBLE) {
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(sn->child[0]->ntype.kind), postmp, eptmp);
} else {
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfstpl\t%s\n", eptmp);
}
offset += type_size(&sn->child[0]->ntype);
sn = sn->child[1];
}
get_pos(sn, FROM);
get_esp(offset);
if (sn->ntype.kind != T_DOUBLE) {
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(sn->ntype.kind), postmp, eptmp);
} else {
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfstpl\t%s\n", eptmp);
}
offset += type_size(&sn->ntype);
}
fprintf(fasm, "\tcalll\t%s\n", node->info.symbol->name);
if (node->ntype.kind <= T_DOUBLE) {
get_esp(node->tmppos);
if (node->ntype.kind != T_DOUBLE) {
fprintf(fasm, "\tmovl\t%%eax, %s\n", eptmp);
} else {
/* TODO */
}
}
break;
}
case K_OPR:
{
switch (node->info.token) {
case INC:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tmovb\t%s, %s\n", postmp, get_esp(node->tmppos));
fprintf(fasm, "\tincb\t%s\n", postmp);
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovb\t%s, %s\n", strtmp, postmp);
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tmovl\t%s, %s\n", postmp, get_esp(node->tmppos));
fprintf(fasm, "\tincl\t%s\n", postmp);
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %s\n", strtmp, postmp);
}
break;
case DEC:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tmovb\t%s, %s\n", postmp, get_esp(node->tmppos));
fprintf(fasm, "\tdecb\t%s\n", postmp);
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovb\t%s, %s\n", strtmp, postmp);
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tmovl\t%s, %s\n", postmp, get_esp(node->tmppos));
fprintf(fasm, "\tdecl\t%s\n", postmp);
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %s\n", strtmp, postmp);
}
break;
case MEMBER:
/* TODO */
break;
case PINC:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tincb\t%s\n", postmp);
fprintf(fasm, "\tmovb\t%s, %s\n", postmp, get_esp(node->tmppos));
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovb\t%s, %s\n", strtmp, postmp);
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tincl\t%s\n", postmp);
fprintf(fasm, "\tmovl\t%s, %s\n", postmp, get_esp(node->tmppos));
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %s\n", strtmp, postmp);
}
break;
case PDEC:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tdecb\t%s\n", postmp);
fprintf(fasm, "\tmovb\t%s, %s\n", postmp, get_esp(node->tmppos));
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovb\t%s, %s\n", strtmp, postmp);
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tdecl\t%s\n", postmp);
fprintf(fasm, "\tmovl\t%s, %s\n", postmp, get_esp(node->tmppos));
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %s\n", strtmp, postmp);
}
break;
case UPLUS:
if (node->ntype.kind != T_DOUBLE) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(node->ntype.kind), postmp, get_esp(node->tmppos));
} else {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfstpl\t%s\n", get_esp(node->tmppos));
}
break;
case UMINUS:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], FROM);
if (postmp[0] != '%') {
fprintf(fasm, "\tmovb\t%s, %%al\n", postmp);
sprintf(postmp, "%%al");
}
fprintf(fasm, "\tnegb\t%s\n", postmp);
fprintf(fasm, "\tmovb\t%s, %s\n", postmp, get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], FROM);
if (postmp[0] != '%') {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
sprintf(postmp, "%%eax");
}
fprintf(fasm, "\tnegl\t%s\n", postmp);
fprintf(fasm, "\tmovl\t%s, %s\n", postmp, get_esp(node->tmppos));
} else if (node->ntype.kind == T_DOUBLE) {
get_pos(node->child[0], FROM);
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfchs\n");
fprintf(fasm, "\tfstpl\t%s\n", get_esp(node->tmppos));
}
break;
case LNOT:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovb\t%s, %%dl\n", postmp);
sprintf(postmp, "%%dl");
}
fprintf(fasm, "\tcmpb\t$0, %s\n", postmp);
fprintf(fasm, "\tsete\t%%al\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
sprintf(postmp, "%%edx");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
fprintf(fasm, "\tsete\t%%al\n");
fprintf(fasm, "\tmovzbl\t%%al, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
}
break;
case NOT:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], FROM);
if (postmp[0] != '%') {
fprintf(fasm, "\tmovb\t%s, %%al\n", postmp);
sprintf(postmp, "%%al");
}
fprintf(fasm, "\tnotb\t%s\n", postmp);
fprintf(fasm, "\tmovb\t%s, %s\n", postmp, get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], FROM);
if (postmp[0] != '%') {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
sprintf(postmp, "%%eax");
}
fprintf(fasm, "\tnotl\t%s\n", postmp);
fprintf(fasm, "\tmovl\t%s, %s\n", postmp, get_esp(node->tmppos));
}
break;
case REFR:
get_pos(node->child[0], TO);
fprintf(fasm, "\tleal\t%s, %%edx\n", postmp);
fprintf(fasm, "\tmovl\t%%edx, %s\n", get_esp(node->tmppos));
break;
case MULTIPLY:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%edx\n", postmp);
fprintf(fasm, "\timull\t%%edx, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
fprintf(fasm, "\timull\t%%edx, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_DOUBLE) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfmulp\t%%st, %%st(1)\n");
fprintf(fasm, "\tfstpl\t%s\n", get_esp(node->tmppos));
}
break;
case DIVIDE:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tmovl\t%%eax, %%edx\n");
fprintf(fasm, "\tsarl\t$31, %%edx\n");
fprintf(fasm, "\tidivl\t%%ecx\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tmovl\t%%eax, %%edx\n");
fprintf(fasm, "\tsarl\t$31, %%edx\n");
fprintf(fasm, "\tidivl\t%%ecx\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_DOUBLE) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfdivrp\t%%st, %%st(1)\n");
fprintf(fasm, "\tfstpl\t%s\n", get_esp(node->tmppos));
}
break;
case MOD:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tmovl\t%%eax, %%edx\n");
fprintf(fasm, "\tsarl\t$31, %%edx\n");
fprintf(fasm, "\tidivl\t%%ecx\n");
fprintf(fasm, "\tmovb\t%%dl, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tmovl\t%%eax, %%edx\n");
fprintf(fasm, "\tsarl\t$31, %%edx\n");
fprintf(fasm, "\tidivl\t%%ecx\n");
fprintf(fasm, "\tmovl\t%%edx, %s\n", get_esp(node->tmppos));
}
break;
case PLUS:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%edx\n", postmp);
fprintf(fasm, "\taddl\t%%edx, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
if (node->child[0]->nkind == K_EXPR && node->child[0]->se.expr == K_SYM && node->child[0]->info.symbol->arysize_cnt) {
fprintf(fasm, "\tleal\t%s, %%eax\n", postmp);
} else {
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
}
get_pos(node->child[1], TO);
if (node->child[1]->nkind == K_EXPR && node->child[1]->se.expr == K_SYM && node->child[1]->info.symbol->arysize_cnt) {
fprintf(fasm, "\tleal\t%s, %%edx\n", postmp);
} else {
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
}
if (node->child[0]->nkind == K_EXPR && node->child[0]->se.expr == K_SYM && (node->child[0]->info.symbol->ptr_cnt || node->child[0]->info.symbol->arysize_cnt)) {
fprintf(fasm, "\timull\t$4, %%edx\n");
}
if (node->child[1]->nkind == K_EXPR && node->child[1]->se.expr == K_SYM && (node->child[1]->info.symbol->ptr_cnt || node->child[1]->info.symbol->arysize_cnt)) {
fprintf(fasm, "\timull\t$4, %%eax\n");
}
fprintf(fasm, "\taddl\t%%edx, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_DOUBLE) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfaddp\t%%st, %%st(1)\n");
fprintf(fasm, "\tfstpl\t%s\n", get_esp(node->tmppos));
}
break;
case MINUS:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%edx\n", postmp);
fprintf(fasm, "\tsubl\t%%edx, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
fprintf(fasm, "\tsubl\t%%edx, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_DOUBLE) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tfldl\t%s\n", postmp);
fprintf(fasm, "\tfsubrp\t%%st, %%st(1)\n");
fprintf(fasm, "\tfstpl\t%s\n", get_esp(node->tmppos));
}
break;
case SHL:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tsall\t%%cl, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tsall\t%%cl, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
}
break;
case SHR:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tsarl\t%%cl, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tsarl\t%%cl, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
}
break;
case LT:
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tcmpl\t%s, %%eax\n", postmp);
fprintf(fasm, "\tsetl\t%%al\n");
fprintf(fasm, "\tmovzbl\t%%al, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
break;
case LE:
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tcmpl\t%s, %%eax\n", postmp);
fprintf(fasm, "\tsetle\t%%al\n");
fprintf(fasm, "\tmovzbl\t%%al, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
break;
case GT:
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tcmpl\t%s, %%eax\n", postmp);
fprintf(fasm, "\tsetg\t%%al\n");
fprintf(fasm, "\tmovzbl\t%%al, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
break;
case GE:
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tcmpl\t%s, %%eax\n", postmp);
fprintf(fasm, "\tsetge\t%%al\n");
fprintf(fasm, "\tmovzbl\t%%al, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
break;
case EQ:
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tcmpl\t%s, %%eax\n", postmp);
fprintf(fasm, "\tsete\t%%al\n");
fprintf(fasm, "\tmovzbl\t%%al, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
break;
case NE:
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tcmpl\t%s, %%eax\n", postmp);
fprintf(fasm, "\tsetne\t%%al\n");
fprintf(fasm, "\tmovzbl\t%%al, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
break;
case AND:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tandl\t%%ecx, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\tandl\t%%ecx, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
}
break;
case XOR:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\txorl\t%%ecx, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\txorl\t%%ecx, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
}
break;
case OR:
if (node->ntype.kind == T_CHAR) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovzbl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovzbl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\torl\t%%ecx, %%eax\n");
fprintf(fasm, "\tmovb\t%%al, %s\n", get_esp(node->tmppos));
} else if (node->ntype.kind == T_INT) {
get_pos(node->child[0], TO);
fprintf(fasm, "\tmovl\t%s, %%eax\n", postmp);
get_pos(node->child[1], TO);
fprintf(fasm, "\tmovl\t%s, %%ecx\n", postmp);
fprintf(fasm, "\torl\t%%ecx, %%eax\n");
fprintf(fasm, "\tmovl\t%%eax, %s\n", get_esp(node->tmppos));
}
break;
case LAND:
get_pos(node->child[0], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
sprintf(postmp, "%%edx");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
fprintf(fasm, "\tje\t.L%d\n", label_cnt);
get_pos(node->child[1], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
sprintf(postmp, "%%edx");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
fprintf(fasm, "\tje\t.L%d\n", label_cnt);
fprintf(fasm, "\tmovl\t$1, %s\n", get_esp(node->tmppos));
fprintf(fasm, "\tjmp\t.L%d\n", label_cnt + 1);
fprintf(fasm, ".L%d:\n", label_cnt);
fprintf(fasm, "\tmovl\t$0, %s\n", get_esp(node->tmppos));
fprintf(fasm, ".L%d:\n", label_cnt + 1);
label_cnt += 2;
break;
case LOR:
get_pos(node->child[0], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
sprintf(postmp, "%%edx");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
fprintf(fasm, "\tjne\t.L%d\n", label_cnt);
get_pos(node->child[1], TO);
if (postmp[0] == '$') {
fprintf(fasm, "\tmovl\t%s, %%edx\n", postmp);
sprintf(postmp, "%%edx");
}
fprintf(fasm, "\tcmpl\t$0, %s\n", postmp);
fprintf(fasm, "\tjne\t.L%d\n", label_cnt);
fprintf(fasm, "\tmovl\t$0, %s\n", get_esp(node->tmppos));
fprintf(fasm, "\tjmp\t.L%d\n", label_cnt + 1);
fprintf(fasm, ".L%d:\n", label_cnt);
fprintf(fasm, "\tmovl\t$1, %s\n", get_esp(node->tmppos));
fprintf(fasm, ".L%d:\n", label_cnt + 1);
label_cnt += 2;
break;
case ASSIGN:
if (node->ntype.kind != T_DOUBLE) {
get_pos(node->child[1], FROM);
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\t%s\t%s, %s\n", mov_action(node->ntype.kind), strtmp, postmp);
} else {
get_pos(node->child[1], FROM);
sprintf(strtmp, "%s", postmp);
get_pos(node->child[0], TO);
fprintf(fasm, "\tfldl\t%s\n", strtmp);
fprintf(fasm, "\tfstpl\t%s\n", postmp);
}
break;
}
}
}
}