X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=uebersetzerbau-ss10.git;a=blobdiff_plain;f=gesamt%2Fcode.bfe;h=b1afba625ff93889b01890893b8f371af57a95af;hp=76175ab861406e4a53d3926abe98321e77bf09f0;hb=027d0484feb839bd68f4981981deffc415b869c1;hpb=7ba1a3cafae8f8c6bf6caaedf5cc4a3f73a5aa10

diff --git a/gesamt/code.bfe b/gesamt/code.bfe
index 76175ab..b1afba6 100644
--- a/gesamt/code.bfe
+++ b/gesamt/code.bfe
@@ -187,12 +187,15 @@ void assign_var(struct treenode *bnode)
 	printf("\tsub $%d, %%%s\n", KIDKID_VAL(0,1), KID_REG(1));
 }
 
+/* dirty...*/
+static short xchg_param[7] = {0};
 void make_call(struct treenode *bnode)
 {
 	int j;
 	printf("\t//params pushen\n");
 	for(j = 0; j < bnode->soffset; j++) {
-		printf("\txchg %%%s, %d(%%rsp)\n", param_reg(j), j*8);
+		if(xchg_param[j] == 1)
+			printf("\txchg %%%s, %d(%%rsp)\n", param_reg(j), j*8);
 	}
 	printf("\t//vars pushen\n");
 	for(j = 6; j > 6 - bnode->vars; j--) {
@@ -230,6 +233,7 @@ void make_call(struct treenode *bnode)
 void prep_arg(struct treenode *bnode, int moveit)
 {
 	printf("\t//args-nr.: %i (%%%s) [moveit: %i]\n", bnode->soffset, param_reg(bnode->soffset), moveit);
+	xchg_param[bnode->soffset] = 1;
 	if(moveit) { /* expr */
 		if((BN_REG == (char *) NULL) || (bnode->kids[1] != TREENULL && bnode->kids[1]->op == O_ID && bnode->kids[1]->kids[0] == TREENULL && bnode->kids[1]->kids[1] == TREENULL)) {
 			if(bnode->kids[1]->name != (char *) NULL && strcmp(bnode->kids[1]->name,"this")!=0) {
@@ -237,6 +241,7 @@ void prep_arg(struct treenode *bnode, int moveit)
 				printf("\tpushq %%%s\n", KID_REG(1));
 			} else {
 				printf("\tpushq %%%s\n", param_reg(bnode->soffset));
+				xchg_param[bnode->soffset] = 0;
 			}
 		} else {
 			printf("\tpushq %%%s\n", BN_REG);
@@ -244,6 +249,9 @@ void prep_arg(struct treenode *bnode, int moveit)
 	} else { /* just O_ID */
 		KIDREG2PARM(0);
 		printf("\tpushq %%%s\n", KID_REG(0));
+		if(strcmp(KID_REG(0), param_reg(bnode->soffset)) == 0) {
+			xchg_param[bnode->soffset] = 0;
+		}
 	}
 }