From 2286a935e6993a6bc756cf1a05b3b170229cd83f Mon Sep 17 00:00:00 2001
From: Bernhard Urban <lewurm@gmail.com>
Date: Mon, 7 Jun 2010 19:43:17 +0200
Subject: [PATCH] gesamt: sicheres umgehen mit den vars, aber dafuer mehr
 befehle wo es oft nicht noetigt waere :( (vgl. lewurm_08.0 @ gesamt wo es
 z.b. noetigt ist...)

---
 gesamt/chelper.c | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/gesamt/chelper.c b/gesamt/chelper.c
index dd345b0..ff621b4 100644
--- a/gesamt/chelper.c
+++ b/gesamt/chelper.c
@@ -15,16 +15,29 @@ static char *regs8l[] = {"al", "r10b", "r11b", "r9b"};
 /* ja, dirty.. */
 static char *akt_func_name = (char*) NULL;
 static char need_stack = 0;
+static int gvars;
 
 void func_header(char *s, int vars, int parms, int call)
 {
 	printf("\t.globl %1$s\n\t.type %1$s, @function\n%1$s:\n", s);
-	printf("\t//vars: %i, parms: %i, call(bool): %i\n", vars, parms, call);
+	printf("\t//vars-> %i, parms-> %i, call(bool)-> %i\n", vars, parms, call);
 	akt_func_name = s;
 
+#if 0
 	need_stack = (vars || parms) && call;
+#else
+	need_stack = vars || (parms && call);
+	gvars = vars;
+#endif
 	if(need_stack) {
-		printf("\tenter $%d, $0\n", 8*(vars + parms + 2 /* fuer rax und r10 */));
+		/* 2 * 7 fuer paramterregs reservieren + 2 fuer rax und r10 */
+		printf("\tenter $%d, $0\n", 8*(2*7 + 2));
+
+		int j;
+		printf("\t//vars pushen\n"); /* koennten parameter enthalten von anderen fkts... */
+		for(j = VARBEGIN; j > VARBEGIN - vars; j--) {
+			printf("\tpushq %%%s\n", param_reg(j));
+		}
 	}
 }
 
@@ -35,8 +48,14 @@ char *get_func_name(void)
 
 void func_footer(void)
 {
-	if(need_stack)
+	if(need_stack) {
+		int j;
+		/* vars poppen */
+		for(j = VARBEGIN+1 - gvars; j < VARBEGIN+1; j++) {
+			printf("\tpopq %%%s\n", param_reg(j));
+		}
 		printf("\tleave\n");
+	}
 	printf("\tret\n\n\n");
 }
 
-- 
2.25.1