/* might as well make this public since the assertion stuff seemed be
using it anyways */
char *dispmon_parse(const char *fmt, int nump, int start,
const char *unit)
{
FmtArray *f=parse_fmt(fmt);
size_t i=0, pno=start;
RStr *output=RStr_new(256);
char *s;
for(i=0; i<f->used && output; i++)
{
if(f->f[i]->text)
expanding_strcat(output,f->f[i]->text);
else
{
/* should not need this check if checktf errors */
if(pno>nump)
{
//cDispmon(modulename, MON_ERR,
// "insufficient parameters for format string \"%s\" in "
// "$dispmon/$writemon", fmt);
RStr_delete(output);
output = NULL;
} else
pno=insert_var(output,f->f[i],pno);
}
}
FmtArray_delete(f);
s = output ? output->str : 0;
free(output);
return s;
}
void send_temp(int num,Operand a,FILE *wf)
{
int result = param_num(a);
if(result < 0)
{
result = var_num(a);
if(result < 0 )
{
//var_add(4);
var_total_num = var_total_num + 4;
insert_var(a,var_total_num);
fprintf(wf,"\tsw $t%d, %d($fp)\n",num, -var_total_num);
}
else
fprintf(wf,"\tsw $t%d, %d($fp)\n",num, -result);
}
else
{
fprintf(wf,"\tlw $t%d, %d($sp)\n",num , result * 4);
}
}
void create_code(FILE *wf)
{
fprintf(wf, ".data\n");
fprintf(wf, "_prompt: .asciiz \"Enter an integer:\"\n");
fprintf(wf, "_ret: .asciiz \"\\n\"\n");
fprintf(wf, ".globl main\n");
fprintf(wf, ".text\n");
fprintf(wf, "read:\n");
fprintf(wf, "\tli $v0, 4\n");
fprintf(wf, "\tla $a0, _prompt\n");
fprintf(wf, "\tsyscall\n");
fprintf(wf, "\tli $v0, 5\n");
fprintf(wf, "\tsyscall\n");
fprintf(wf, "\tjr $ra\n");
fprintf(wf, "\n");
fprintf(wf, "write:\n");
fprintf(wf, "\tli $v0, 1\n");
fprintf(wf, "\tsyscall\n");
fprintf(wf, "\tli $v0, 4\n");
fprintf(wf, "\tla $a0, _ret\n");
fprintf(wf, "\tsyscall\n");
fprintf(wf, "\tmove $v0, $0\n");
fprintf(wf, "\tjr $ra\n");
InterCode * temp = InterCodeHead;
int num = 1;
int result = 0;
int op1 = 0;
int op2 = 0;
int arg_num = 0;
InterCode * argpos = NULL;
int i = 0;
for(; temp != NULL ; temp = temp->next)
{
switch(temp->kind)
{
case ASSIGN:
get_temp(0, temp->u.assign.right, wf);
//fprintf(wf, "\tmove $t1, $t0");
send_temp(0, temp->u.assign.left, wf);
break;
case ADDR:
get_temp(0, temp->u.addr.op1, wf);
get_temp(1, temp->u.addr.op2, wf);
fprintf(wf,"\tsub $t2, $t0, $t1\n");
fprintf(wf,"\taddi $t2, $t2, -4\n");
send_temp(2,temp->u.addr.result,wf);
break;
case MEMREAD:
get_temp(0, temp->u.assign.right, wf);
fprintf(wf,"\tlw $t1, 0($t0)\n");
send_temp(1,temp->u.assign.left,wf);
break;
case MEMWRITE:
get_temp(0, temp->u.assign.right, wf);
get_temp(1, temp->u.assign.left, wf);
fprintf(wf,"\tsw $t0, 0($t1)\n");
break;
case ADD:
get_temp(0, temp->u.addr.op1, wf);
get_temp(1, temp->u.addr.op2, wf);
fprintf(wf, "\tadd $t2, $t1, $t0\n");
send_temp(2, temp->u.addr.result, wf);
break;
case SUB:
get_temp(0, temp->u.addr.op1, wf);
get_temp(1, temp->u.addr.op2, wf);
fprintf(wf, "\tsub $t2, $t0, $t1\n");
send_temp(2, temp->u.addr.result, wf);
break;
case MUL:
get_temp(0, temp->u.addr.op1, wf);
get_temp(1, temp->u.addr.op2, wf);
fprintf(wf, "\tmul $t2, $t1, $t0\n");
send_temp(2, temp->u.addr.result, wf);
break;
case DIV:
get_temp(0, temp->u.addr.op1, wf);
get_temp(1, temp->u.addr.op2, wf);
fprintf(wf, "\tdiv $t0, $t1\n");
fprintf(wf, "\tmflo $t2\n");
send_temp(2, temp->u.addr.result, wf);
break;
case LABEL:
fprintf(wf,"label%d :\n",temp->u.label.label);
break;
case FUNCTION:
fprintf(wf,"%s:\n",temp->u.func.name);
if(strcmp(temp->u.func.name,"main") == 0)
{
fprintf(wf,"\tmove $fp, $sp\n");
fprintf(wf,"\taddi $sp, $sp, -2048\n");
fprintf(wf, "\tli $t0, 8\n");
fprintf(wf,"\tsw $t0, 4($sp)\n");
}
param_total_num = 0;
break;
case GOTO:
fprintf(wf,"\tj label%d\n",temp->u.label.label);
break;
case IF:
get_temp(0, temp->u.ifstruct.left, wf);
get_temp(1, temp->u.ifstruct.right, wf);
switch(temp->u.ifstruct.relop)
{
case 3: fprintf(wf,"\tbne "); break;
case 4: fprintf(wf,"\tbeq "); break;
case 5: fprintf(wf,"\tblt "); break;
case 6: fprintf(wf,"\tbgt "); break;
case 7: fprintf(wf,"\tbge "); break;
case 8: fprintf(wf,"\tble "); break;
default: fprintf(stdout,"error\n"); break;
}
fprintf(wf,"$t0, $t1, label%d\n", temp->u.ifstruct.label);
break;
case RETURN:
get_temp(0, temp->u.arg.result, wf);
fprintf(wf, "\tmove $v0, $t0\n");
fprintf(wf, "\tjr $ra\n");
break;
case DEC:
var_total_num = var_total_num + 4;
insert_var(temp->u.dec.dec,var_total_num);
fprintf(wf,"\tmove $t0, $fp\n");
fprintf(wf,"\taddi $t0, $t0, %d\n",-var_total_num);
fprintf(wf,"\tsw $t0, %d($fp)\n",-var_total_num);
var_total_num = var_total_num + temp->u.dec.size;
break;
case ARG:
fprintf(wf,"\tsw $ra, 0($sp)\n");
fprintf(wf,"\taddi $sp, $sp, %d\n",(param_total_num + 2) * 4);
//printf("param_total_num----%d\n",param_total_num);
argpos = temp;
arg_num = 1;
for( ; argpos->next->kind == ARG; argpos = argpos->next)
{
arg_num ++;
}
i = arg_num;
for( ; temp->next->kind == ARG; temp = temp->next)
{
get_temp(0, temp->u.arg.result, wf);
printf("arg: %d\n",i);
fprintf(wf,"\tsw $t0, %d($sp)\n", i * 4);
i --;
}
get_temp(0, temp->u.arg.result, wf);
//printf("arg: %d\n",i);
fprintf(wf,"\tsw $t0, %d($sp)\n", i * 4);
//printf("arg_num: %d\n",arg_num);
fprintf(wf,"\tli $t0, %d\n", (arg_num + 2) * 4);
fprintf(wf,"\tsw $t0, %d($sp)\n", (arg_num + 1) * 4);
temp = temp->next;
//printf("arg_num: %d----%s\n",arg_num,temp->u.callFunc.func);
fprintf(wf, "\tjal %s\n",temp->u.callFunc.func);
fprintf(wf, "\tlw $t0, -4($sp)\n");
fprintf(wf,"\tsub $sp, $sp, $t0\n");
fprintf(wf, "\tlw $ra, 0($sp)\n");
fprintf(wf, "\tmove $t0, $v0\n");
send_temp(0, temp->u.callFunc.result,wf);
break;
case CALL:
//printf("%d",num);
fprintf(wf,"\tsw $ra, 0($sp)\n");
fprintf(wf, "\tli $t0, 8\n");
fprintf(wf,"\tsw $t0, 4($sp)\n");
fprintf(wf,"\tadd $sp, $sp, $t0\n");
fprintf(wf, "\tjal %s\n",temp->u.callFunc.func);
fprintf(wf, "\tlw $t0, -4($sp)\n");
fprintf(wf,"\tsub $sp, $sp, $t0\n");
fprintf(wf, "\tlw $ra, 0($sp)\n");
fprintf(wf, "\tmove $t0, $v0\n");
send_temp(0, temp->u.callFunc.result,wf);
break;
case PARAM:
num = 1;
param_total_num = 1;
for( ; temp->next->kind == PARAM; temp = temp->next)
{
param_total_num ++;
insert_param(temp->u.arg.result, num);
num ++;
}
insert_param(temp->u.arg.result, num);
num ++;
break;
case READ:
fprintf(wf,"\tsw $ra, 0($sp)\n");
fprintf(wf,"\taddi $sp, $sp, 4\n");
fprintf(wf, "\tjal read\n");
fprintf(wf,"\tsub $sp, $sp, 4\n");
fprintf(wf, "\tlw $ra, 0($sp)\n");
fprintf(wf, "\tmove $t0, $v0\n");
send_temp(0, temp->u.arg.result,wf);
break;
case WRITE:
fprintf(wf,"\tsw $ra, 0($sp)\n");
fprintf(wf,"\taddi $sp, $sp, 4\n");
get_temp(0, temp->u.arg.result, wf);
fprintf(wf,"\tmove $a0, $t0\n");
fprintf(wf, "\tjal write\n");
fprintf(wf,"\taddi $sp, $sp, -4\n");
fprintf(wf, "\tlw $ra, 0($sp)\n");
break;
default:
break;
}
}
}
void and_var(bfun* b, int var) {
for (cube* c = b->begin; c != NULL; c = c->next) {
insert_var (c, var);
}
}
