#include <stdio.h>
#include <string.h>
#include "chelper.h"
#include "tree.h"

void func_header(char *s)
{
	printf("\t.globl %1$s\n\t.type %1$s, @function\n%1$s:\n", s);
}

void move(char *src, char *dst)
{
	if(strcmp(src,dst) != 0) {
		printf("\tmovq %%%s, %%%s\n", src, dst);
	}
}

void ret(void)
{
	printf("\tret\n");
}

char *next_reg(char *s, short skip)
{
	char *regs[] = {"rax", "r10", "r11", "r9", "r8", "rcx", "rdx", "rsi", "rdi"};
	int i=0;
	if (s != (char*) NULL) {
		for(; i < 9;) {
			if(!strcmp(s, regs[i++])) {
				break;
			}
		}
	}
	if(skip) {
		i++;
	}
	return regs[i];
}

char *param_reg(int num)
{
	char *regs[] = {"rdi", "rsi", "rdx", "rcx", "r8", "r9"};
	return regs[num-1];
}