patch-2.4.4 linux/include/asm-s390x/system.h

• Lines: 85
• Date: Wed Apr 11 19:02:29 2001
• Orig file: v2.4.3/linux/include/asm-s390x/system.h
• Orig date: Tue Feb 13 14:13:44 2001

diff -u --recursive --new-file v2.4.3/linux/include/asm-s390x/system.h linux/include/asm-s390x/system.h
@@ -33,6 +33,9 @@
 #define xchg(ptr,x) \
   ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(void *)(ptr),sizeof(*(ptr))))
 
+extern void __misaligned_u16(void);
+extern void __misaligned_u32(void);
+extern void __misaligned_u64(void);
 
 static inline unsigned long __xchg(unsigned long x, void * ptr, int size)
 {
@@ -43,14 +46,14 @@
                                 "   nr    1,%0\n"     /* isolate last 2 bits */
                                 "   xr    %0,1\n"     /* align ptr */
                                 "   bras  2,0f\n"
-                                "   icm   1,8,%1\n"   /* for ptr&3 == 0 */
-                                "   stcm  0,8,%1\n"
-                                "   icm   1,4,%1\n"   /* for ptr&3 == 1 */
-                                "   stcm  0,4,%1\n"
-                                "   icm   1,2,%1\n"   /* for ptr&3 == 2 */
-                                "   stcm  0,2,%1\n"
-                                "   icm   1,1,%1\n"   /* for ptr&3 == 3 */
-                                "   stcm  0,1,%1\n"
+                                "   icm   1,8,7(%1)\n"   /* for ptr&3 == 0 */
+                                "   stcm  0,8,7(%1)\n"
+                                "   icm   1,4,7(%1)\n"   /* for ptr&3 == 1 */
+                                "   stcm  0,4,7(%1)\n"
+                                "   icm   1,2,7(%1)\n"   /* for ptr&3 == 2 */
+                                "   stcm  0,2,7(%1)\n"
+                                "   icm   1,1,7(%1)\n"   /* for ptr&3 == 3 */
+                                "   stcm  0,1,7(%1)\n"
                                 "0: sll   1,3\n"
                                 "   la    2,0(1,2)\n" /* r2 points to an icm */
                                 "   l     0,0(%0)\n"  /* get fullword */
@@ -59,20 +62,21 @@
                                 "   cs    0,1,0(%0)\n"
                                 "   jl    1b\n"
                                 "   ex    0,4(2)"     /* store *ptr to x */
-                                : "+&a" (ptr), "+m" (x) :
+                                : "+&a" (ptr) : "a" (&x)
                                 : "memory", "0", "1", "2");
+			break;
                 case 2:
                         if(((addr_t)ptr)&1)
-                                panic("misaligned (__u16 *) in __xchg\n");
+				__misaligned_u16();
                         asm volatile (
                                 "   lghi  1,2\n"
                                 "   nr    1,%0\n"     /* isolate bit 2^1 */
                                 "   xr    %0,1\n"     /* align ptr */
                                 "   bras  2,0f\n"
-                                "   icm   1,12,%1\n"   /* for ptr&2 == 0 */
-                                "   stcm  0,12,%1\n"
-                                "   icm   1,3,%1\n"    /* for ptr&2 == 1 */
-                                "   stcm  0,3,%1\n"
+                                "   icm   1,12,6(%1)\n"   /* for ptr&2 == 0 */
+                                "   stcm  0,12,6(%1)\n"
+                                "   icm   1,3,2(%1)\n"    /* for ptr&2 == 1 */
+                                "   stcm  0,3,2(%1)\n"
                                 "0: sll   1,2\n"
                                 "   la    2,0(1,2)\n" /* r2 points to an icm */
                                 "   l     0,0(%0)\n"  /* get fullword */
@@ -81,12 +85,12 @@
                                 "   cs    0,1,0(%0)\n"
                                 "   jl    1b\n"
                                 "   ex    0,4(2)"     /* store *ptr to x */
-                                : "+&a" (ptr), "+m" (x) :
+                                : "+&a" (ptr) : "a" (&x)
                                 : "memory", "0", "1", "2");
                         break;
                 case 4:
                         if(((addr_t)ptr)&3)
-                                panic("misaligned (__u32 *) in __xchg\n");
+				__misaligned_u32();
                         asm volatile (
                                 "    l    0,0(%1)\n"
                                 "0:  cs   0,%0,0(%1)\n"
@@ -97,7 +101,7 @@
                         break;
                 case 8:
                         if(((addr_t)ptr)&7)
-                                panic("misaligned (__u64 *) in __xchg\n");
+				__misaligned_u64();
                         asm volatile (
                                 "    lg  0,0(%1)\n"
                                 "0:  csg 0,%0,0(%1)\n"