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codea: refactor, teil1
[uebersetzerbau-ss10.git]
/
codea
/
chelper.c
diff --git
a/codea/chelper.c
b/codea/chelper.c
index be39f3f3314e3efb312a8bf608e508f29396021c..015e7a35244bfd13de60e33cd2f4584737f642f9 100644
(file)
--- a/
codea/chelper.c
+++ b/
codea/chelper.c
@@
-1,12
+1,17
@@
#include <stdio.h>
#include <string.h>
#include <stdio.h>
#include <string.h>
+#include <stdlib.h>
#include "chelper.h"
#include "tree.h"
#include "chelper.h"
#include "tree.h"
-#if
1
+#if
0
#define DDCHELP
#endif
#define DDCHELP
#endif
+#define REGLEN 4
+static char *regs64[] = {"rax", "r10", "r11", "r9"};
+static char *regs8l[] = {"al", "r10b", "r11b", "r9b"};
+
void func_header(char *s)
{
printf("\t.globl %1$s\n\t.type %1$s, @function\n%1$s:\n", s);
void func_header(char *s)
{
printf("\t.globl %1$s\n\t.type %1$s, @function\n%1$s:\n", s);
@@
-27,35
+32,36
@@
void move(char *src, char *dst)
void moveimm(long imm, char *dst)
{
char buf[100];
void moveimm(long imm, char *dst)
{
char buf[100];
- sprintf(buf, "$%
li
", imm);
+ sprintf(buf, "$%
d
", imm);
printf("\tmovq %s, %%%s\n", buf, dst);
}
printf("\tmovq %s, %%%s\n", buf, dst);
}
-void ret(void)
-{
- printf("\tret\n");
-}
-
-char *next_reg(char *s, short skip)
+char *next_reg(char *s, int params)
{
{
- /* TODO: warum enthaelt das register die parameter enthalten koennten? */
- char *regs[] = {"rax", "r10", "r11", "r9", "r8", "rcx", "rdx", "rsi", "rdi"};
- int i=0;
+ int i = 0;
if (s != (char*) NULL) {
if (s != (char*) NULL) {
- while(i < 9) {
- if(!strcmp(s, regs[i++])) {
- break;
- }
+ while(strcmp(s, regs64[i]) != 0) {
+ i = (i+1) % REGLEN;
}
}
- }
- if(skip) {
- i++;
+ i = (i+1) % REGLEN;
}
#ifdef DDCHELP
}
#ifdef DDCHELP
- fprintf(stderr, "next_reg(): %s
\n", regs[i]
);
+ fprintf(stderr, "next_reg(): %s
(bei %i parameter)\n", regs64[i], params
);
#endif
#endif
+ return regs64[i];
+}
- return regs[i];
+char *reg_64to8l(char *s)
+{
+ int i = 0;
+ if (s != (char*) NULL) {
+ while(strcmp(s, regs64[i]) != 0) {
+ i = (i+1) % REGLEN;
+ }
+ return regs8l[i];
+ }
+ fprintf(stderr, "reg_64to8l(): sollte nicht passieren\n");
+ exit(4);
}
char *param_reg(int num)
}
char *param_reg(int num)