--- a/mc-code-powerpc.c	Wed Dec 28 15:45:39 2005 +0900
+++ b/mc-code-powerpc.c	Wed Dec 28 21:21:57 2005 +0900
@@ -1242,7 +1242,7 @@
     char *crn;
     use_int(reg);
     crn = register_name(reg);
-    // printf("# 0x%08x\n",e2);
+    // printf("## 0x%08x\n",e2);
     if (-32768<e2&&e2<32768)
 	printf("\tli %s,%d\n",crn,e2);
     else {
@@ -5164,18 +5164,26 @@
     int val;
     int clobber = 0;
 
-    printf("# constraint %s\n",p);
-    if (*p=='=') {
+    printf("## constraint %s\n",p);
+retry:
+    switch((c=*p)) {
+    case '?':
+    case '!':
+    case '+':
+    case '%':
+    case '#':
+    case '*':
+    case '=':
 	// output register
 	p++;
-    }
-    if (*p=='&') {
+	goto retry;
+    case '&':
 	// earlyclobber
 	p++;
 	clobber = 1;
-    }
-    c = *p;
-    if (c=='r') {
+	goto retry;
+    case 'b':  // address base register (what?)
+    case 'r':
 	if (mode==ASM_INPUT) {
 	    for(;repl0;repl0 = cadr(repl0)) {
 		if (car(car(repl0))==REGISTER && caddr(repl0)==0) {
@@ -5189,9 +5197,11 @@
 	    r = get_register();
 	}
 	repl = list3(list2(REGISTER,r),repl,clobber);
-    } else if (c=='m') {
+	break;
+    case 'm':
 	repl = list3(list2(0,0),repl,clobber);
-    } else if (c=='i') {
+	break;
+    case 'i':
 	if (car(e1)==GVAR) {
 	    e1=list3(FNAME,(int)(((NMTBL *)caddr(e1))->nm),0);
 	} else if (car(e1)==FNAME) {
@@ -5203,13 +5213,18 @@
 	} else if (car(e1)==CONST) {
 	} else error(-1);
 	repl = list3(e1,repl,clobber);
-    } else if (digit(c)) {
+	break;
+    case '0': case '1': case '2': case '3': case '4':
+    case '5': case '6': case '7': case '8': case '9':
 	val = 0;
 	do { val = val*10 + c-'0'; } while (digit(c=*p++));
 	if (val>MAX_ASM_REG) error(-1); // too large register
 	if (n-val<0) error(-1);
 	repl = list3(car(nth(n-val-1,repl0)),repl,clobber);
-    } else error(-1);
+	break;
+    default:
+	printf("### unknown asm constraint %c\n",c);
+    }
     return repl;
 }
 
@@ -5325,7 +5340,7 @@
 		i = l+bitsize;
                 *bfd = (i==bitsz)?0:i;
 		*sz = (i+7)/8;
-// printf("# bitpos=%d bitsize=%d bitsz=%d offset=%d\n",l,bitsize,bitsz,*poffset);
+// printf("## bitpos=%d bitsize=%d bitsz=%d offset=%d\n",l,bitsize,bitsz,*poffset);
 		return l;
 	    } 
 	}
@@ -5340,7 +5355,7 @@
     *bfd = (bitsize==bitsz)?0:bitsize;
     *sz = (bitsize+7)/8;
 
-// printf("# bitpos=%d bitsize=%d bitsz=%d offset=%d\n",bitpos,bitsize,bitsz,*poffset);
+// printf("## bitpos=%d bitsize=%d bitsz=%d offset=%d\n",bitpos,bitsize,bitsz,*poffset);
     return bitpos;
 }
 
@@ -5354,7 +5369,7 @@
     int i,size;
     set_bitsz(type,&bitpos,&bitsize,&sign,&bitsz,&align,&l);
     size = bitsz/8;
-// printf("# %d: bitpos=%d bitsize=%d bitsz=%d\n",lineno,bitpos,bitsize,bitsz);
+// printf("## %d: bitpos=%d bitsize=%d bitsz=%d\n",lineno,bitpos,bitsize,bitsz);
     /* this implementation returns -1 for int i:1; */
     if (l==1) {
 #if LONGLONG_CODE
@@ -5388,7 +5403,7 @@
 static void
 make_mask_and_or(int mask,int tmp,char *trn,char *crn,char *lrn)
 {
-// printf("# mask 0x%08x ~0x%08x\n",mask,~mask);
+// printf("## mask 0x%08x ~0x%08x\n",mask,~mask);
 	code_const(~mask,tmp);
 	printf("\tor %s,%s,%s\n",trn,crn,trn);
 	/* do conjunction  */
@@ -5472,7 +5487,7 @@
 {
     char *trn;
     int tmp = -1;
-// printf("# mask 0x%08x ~0x%08x\n",mask,~mask);
+// printf("## mask 0x%08x ~0x%08x\n",mask,~mask);
     if ((~mask|c)!=-1) {
 	trn = register_name(tmp=get_register());
 	code_const((~mask|c),tmp);