From abdf36c87590821230205f354e6e3ce944f4494f Mon Sep 17 00:00:00 2001
From: Bernhard Urban <lewurm@gmail.com>
Date: Tue, 18 May 2010 04:45:35 +0200
Subject: [PATCH] codea: schoenerer ansatz bei der registerauswahl

---
 codea/chelper.c | 29 ++++++++++-------------------
 1 file changed, 10 insertions(+), 19 deletions(-)

diff --git a/codea/chelper.c b/codea/chelper.c
index 0be9cc3..25893f9 100644
--- a/codea/chelper.c
+++ b/codea/chelper.c
@@ -8,14 +8,9 @@
 #define DDCHELP
 #endif
 
-#define REGLEN 10
-#if 0
-static char *regs64[] = {"rax", "r10", "r11", "r9", "r8", "rcx", "rdx", "rsi", "rdi"};
-static char *regs8l[] = {"al", "r10b", "r11b", "r9b", "r8b", "cl", "dl", "sil", "dil"};
-#else
-static char *regs64[] = {"rax", "r10", "r11", "r9", "rax", "r10", "r11", "rax", "r10", "r11"};
-static char *regs8l[] = {"al", "r10b", "r11b", "r9b", "al", "r10b", "r11b", "al", "r10b", "r11b"};
-#endif
+#define REGLEN 4
+static char *regs64[] = {"rax", "r10", "r11", "r9"};
+static char *regs8l[] = {"al", "r10b", "r11b", "r9b"};
 
 void func_header(char *s)
 {
@@ -56,14 +51,13 @@ char *next_reg(char *s, short skip, int params)
 {
 	int i = 0;
 	if (s != (char*) NULL) {
-		while(i < REGLEN) {
-			if(!strcmp(s, regs64[i++])) {
-				break;
-			}
+		while(strcmp(s, regs64[i]) != 0) {
+			i = (i+1) % REGLEN;
 		}
+		i = (i+1) % REGLEN;
 	}
 	if(skip) {
-		i++;
+		i = (i+1) % REGLEN;
 	}
 #ifdef DDCHELP
 	fprintf(stderr, "next_reg(): %s (bei %i parameter)\n", regs64[i], params);
@@ -83,13 +77,10 @@ char *reg_64to8l(char *s)
 {
 	int i = 0;
 	if (s != (char*) NULL) {
-		while(i < REGLEN) {
-			if(!strcmp(s, regs64[i])) {
-				return regs8l[i];
-			} else {
-				i++;
-			}
+		while(strcmp(s, regs64[i]) != 0) {
+			i = (i+1) % REGLEN;
 		}
+		return regs8l[i];
 	}
 	fprintf(stderr, "reg_64to8l(): sollte nicht passieren\n");
 	exit(4);
-- 
2.25.1