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mips_code.c
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#include "parser.h"
#include "code.h"
#include "mips_code.h"
#include <stdio.h> // for printf
// Translation of intermediate code to MIPS (prints the mips program)
void printMIPS(InstrList* intermCode)
{
Instr* instr = intermCode->first;
// Begining of data section
printf(".data\n");
for(int i = 0; i < HASH_SIZE; i++)
{
if(variables->array[i] != NULL)
{
LIST_HT cur = variables->array[i];
while(cur != NULL)
{
printf("\t%s: .word 0\n", cur->variable);
cur = cur->next;
}
}
}
printf("\tnewline: .asciiz \"\\n\"\n");
// End of data section
// Begining of text section
printf(".text\n");
printf("main:\n");
while(instr)
{
switch(instr->op)
{
case I_ATRIB:
printf("\tli %s, %d\n", instr->el1->u.name, instr->el2->u.value);
break;
case I_PLUS:
printf("\tadd %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_ADDI:
printf("\taddi %s, %s, %d\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.value);
break;
case I_MINUS:
printf("\tsub %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_SUBI:
printf("\tsubi %s, %s, %d\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.value);
break;
case I_DIV:
printf("\tdiv %s, %s\n", instr->el2->u.name, instr->el3->u.name);
printf("\tmflo %s\n", instr->el1->u.name);
break;
case I_MULT:
printf("\tmul %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_MOD:
printf("\tdiv %s, %s\n", instr->el2->u.name, instr->el3->u.name);
printf("\tmfhi %s\n", instr->el1->u.name);
break;
case I_NEG:
printf("\tneg %s, %s\n", instr->el1->u.name, instr->el2->u.name);
break;
case I_LABEL:
printf("%s:\n", instr->el1->u.name);
break;
case I_GOTO:
printf("\tj %s\n", instr->el1->u.name);
break;
case I_IF:
printf("\tbne %s, $zero, %s\n", instr->el1->u.name, instr->el2->u.name);
printf("\tj %s\n", instr->el3->u.name);
break;
case I_BEQ:
printf("\tseq %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_BNE:
printf("\tsne %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_BGT:
printf("\tsgt %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_BGE:
printf("\tsge %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_BLT:
printf("\tslt %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_BLE:
printf("\tsle %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_OR:
printf("\tor %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_ORI:
printf("\tori %s, %s, %d\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.value);
break;
case I_AND:
printf("\tand %s, %s, %s\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.name);
break;
case I_ANDI:
printf("\tandi %s, %s, %d\n", instr->el1->u.name, instr->el2->u.name, instr->el3->u.value);
break;
case I_NOT:
printf("\tseq %s, %s, $zero\n", instr->el1->u.name, instr->el2->u.name);
break;
case I_PRINT:
printf("\tli $v0, 1\n");
printf("\tlw $a0, %s\n", instr->el1->u.name);
printf("\tsyscall\n");
printf("\tli $v0, 4\n");
printf("\tla $a0, newline\n");
printf("\tsyscall\n");
break;
case I_READ:
printf("\tli $v0, 5\n");
printf("\tsyscall\n");
printf("\tsw $v0, %s\n", instr->el1->u.name);
break;
case I_LOAD:
printf("\tlw %s, %s\n", instr->el1->u.name, instr->el2->u.name);
break;
case I_STORE:
printf("\tsw %s, %s\n", instr->el1->u.name, instr->el2->u.name);
break;
}
instr = instr->next;
}
// End of text section
}