X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=gesamt_ppc%2Fchelper.c;h=2e736ea421618c08867b07b598b27cfdbbf2d615;hb=HEAD;hp=84ef5bac03d3f6215bc5a3758a2782aec2163058;hpb=5f61ae4fe282ab07b5a81722497893c767bdb058;p=uebersetzerbau-ss10.git

diff --git a/gesamt_ppc/chelper.c b/gesamt_ppc/chelper.c
index 84ef5ba..2e736ea 100644
--- a/gesamt_ppc/chelper.c
+++ b/gesamt_ppc/chelper.c
@@ -23,7 +23,10 @@ void func_header(char *s, int vars, int parms, int call)
 
 	need_stack = (vars || parms) && call;
 	if(need_stack) {
-		printf("\tenter $%d, $0\n", 8*(vars + parms + 2 /* fuer rax und r10 */));
+		/* save the link register */
+		printf("\tmflr 0; stw 0,-8(1)\n");
+		/* create the stack */
+		printf("\tstwu 1, -80(1)\n");
 	}
 }
 
@@ -34,8 +37,12 @@ char *get_func_name(void)
 
 void func_footer(void)
 {
-	if(need_stack)
-		printf("\tleave\n");
+	if(need_stack) {
+		/* remove stack frame */
+		printf("\taddi 1,1,80\n");
+		/* restore link register */
+		printf("\tlwz 0,-8(1); mtlr 0\n");
+	}
 	printf("\tblr\n\n\n");
 }
 
@@ -43,14 +50,21 @@ void move(char *src, char *dst)
 {
 	if(src == (char*) NULL) return;
 	if(strcmp(src,dst) != 0) {
-		printf("\tmr %s, %s\n", dst, src);
+		printf("\tmr %s,%s\n", dst, src);
 	}
 }
 
 void moveimm(long imm, char *dst)
 {
-	/* TODO: 32 bits... */
-	printf("\taddi %s,0,%d\n", dst, imm);
+	if((imm > 65536-1) || (imm < -65536)) {
+		/* high word */
+		printf("\tlis %s,%d@ha\n", dst, imm);
+		/* low word */
+		printf("\taddi %s,%s,%d@l\n", dst, dst, imm);
+	} else {
+		/* just low word */
+		printf("\tli %s,%d@l\n", dst, imm);
+	}
 }
 
 char *next_reg(char *s, int params)
@@ -77,7 +91,7 @@ char *reg_64to8l(char *s)
 
 char *param_reg(int num)
 {
-	char *regs[] = {"3", "4", "5", "6", "7", "8", "9"};
+	char *regs[] = {"3", "4", "5", "6", "7", "8", "9", "10"};
 	return regs[num];
 }