--- a/mc-nop-386.c	Tue Feb 11 22:36:51 2003 +0900
+++ b/mc-nop-386.c	Wed Feb 12 04:45:53 2003 +0900
@@ -133,6 +133,7 @@
     rname[dreg]   spare real register
 
     regs[]        virtual register usage
+    regv[]        value in virtual register flag
 
     reg_name[rname[creg]]
  */
@@ -141,6 +142,7 @@
 static int rname[MAX_MAX];
 static int regs[MAX_MAX];       /* 使われているレジスタを示すフラグ */
 static int reg_stack[MAX_MAX];  /* 実際のレジスタの領域 */
+static int regv[MAX_MAX];       /* 値が入っているかどうか */
 
 void
 code_init(void)
@@ -203,7 +205,7 @@
 
 void 
 free_register(int i) {    /* いらなくなったレジスタを開放 */
-    regs[i]=0;
+    regv[i]=regs[i]=0;
 }
 
 int
@@ -230,6 +232,28 @@
     return count;    
 }
 
+void
+use_register_var(int i) {
+    regv[i]=1;
+}
+
+static int creg_regvar = -1;
+static int creg_regvar_back;
+static int creg_back;
+
+void
+creg_destroy() {
+    creg_back = creg; creg_regvar_back = creg_regvar;
+    if (creg_regvar>=0)
+	creg = creg_regvar;
+    creg_regvar=-1;
+}
+
+void
+creg_un_destroy() {
+    creg = creg_back; creg_regvar = creg_regvar_back;
+}
+
 
 void 
 gexpr_init(void)
@@ -239,16 +263,17 @@
     }
     text_mode();
     use_register(creg,REG_EAX,0);
+    /* use_register(dreg,REG_EDX,0); */
+    creg_regvar = -1;
 }
 
 void 
 emit_init(void)
 {
     int i;
-    for(i=0;i<REAL_MAX_REGISTER;i++) regs[i]=0;
-    for(i=0;i<REAL_MAX_REGISTER;i++) rname[i]=i;
-    creg = get_register();
-    dreg = get_register();
+    for(i=0;i<REAL_MAX_REGISTER;i++) { regs[i]=0; regv[i]=0;rname[i]=i;}
+    creg = get_register(); /* must be EAX */
+    dreg = get_register(); /* must be EBX */
     reg_sp = 0;
     text_mode();
 }
@@ -799,6 +824,13 @@
     if(length%size_of_int) {
 	length += size_of_int - (length%size_of_int);
     }
+    if (length==4) {
+	printf("\tpushl (%s)\n",register_name(creg,0)); return 1;
+    }
+    if (length==8) {
+	printf("\tpushl 4(%s)\n",register_name(creg,0));
+	printf("\tpushl (%s)\n",register_name(creg,0)); return 2;
+    }
     /* I think, after g_expr, at least two registers are free */
     printf("\tsubl $%d,%%esp\n",length);
     if (register_full()) {