Changeset e269c53 in mainline

Timestamp:

2006-06-06T15:39:46Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

2d7a5fe

Parents:

c782434

Message:

ia64 memcpy that is unaligned pointer resistent.

File:

• arch/ia64/src/asm.S (modified) (1 diff)

arch/ia64/src/asm.S

@@ -50 +50 @@
         alloc loc0 = ar.pfs, 3, 1, 0, 0
 
-        shr.u r18 = in2, 3
-        mov r8 = in1 ;;                 /* prepare to return in1 on success */
-        cmp.ne p6, p7 = 0, r18  ;;
-(p7)    mov r17 = r0
-(p7)    br.cond.dptk 1f ;;
+        adds r14 = 7, in1
+        mov r2 = ar.lc
+        mov r8 = in1 ;;
+        and r14 = -8, r14 ;;
+        cmp.ne p6, p7 = r14, in1
+(p7)    br.cond.dpnt 3f ;;
+0:
+        cmp.ne p6, p7 = 0, in2
+(p7)    br.cond.dpnt 2f ;;
+(p6)    adds r14 = -1, in2
+(p6)    mov r16 = r0
+(p6)    mov r17 = r0 ;;
+(p6)    mov ar.lc = r14
+1:
+        add r14 = r16, r8
+        add r15 = r16, in0
+        adds r17 = 1, r17 ;;
+        ld1 r14 = [r14]
+        mov r16 = r17 ;;
+        st1 [r15] = r14
+        br.cloop.sptk.few 1b ;;
+2:
+        mov ar.lc = r2
+
+        mov ar.pfs = loc0
+        br.ret.sptk.many rp
+3:
+        adds r14 = 7, in0 ;;
+        and r14 = -8, r14 ;;
+        cmp.eq p6, p7 = r14, in0
+(p7)    br.cond.dptk 0b
+        shr.u r18 = in2, 3 ;;
+        cmp.ne p6, p7 = 0, r18
+(p7)    br.cond.dpnt 5f ;;
+(p6)    adds r14 = -1, r18
+(p6)    mov r16 = r0
+(p6)    mov r17 = r0 ;;
+(p6)    mov ar.lc = r14
+4:
+        shladd r14 = r16, 3, r0
+        adds r16 = 1, r17 ;;
+        add r15 = r8, r14
+        add r14 = in0, r14
+        mov r17 = r16 ;;
+        ld8 r15 = [r15] ;;
+        st8 [r14] = r15
+        br.cloop.sptk.few 4b
+5:
+        and r15 = 7, in2
+        shladd r14 = r18, 3, r0
         mov r16 = r0
-        mov r17 = r0 ;;
-
-0:
-        shladd r14 = r17, 3, r0
-        adds r16 = 1, r16 ;;
-        add r15 = r14, r8
-        sxt4 r17 = r16
-        add r14 = r14, in0 ;;
-        ld8 r15 = [r15]
-        cmp.gtu p6, p7 = r18, r17 ;;
-        st8 [r14] = r15
-(p6)    br.cond.dptk 0b
-
-1:
-        and in2 = 7, in2 ;;
-        cmp.eq p6, p7 = 0, in2 ;;
-(p6)    mov ar.pfs = loc0
-(p6)    br.ret.dptk.many rp
-        shladd r14 = r17, 3, r0
-        mov r16 = r0
-        mov r17 = r0 ;;
-        add in0 = in0, r14
-        add r18 = r8, r14 ;;
-
-2:
-        add r14 = r16, r18
-        adds r17 = 1, r17
-        add r15 = in0, r16 ;;
+        mov r18 = r0 ;;
+        cmp.eq p6, p7 = 0, r15
+        add in0 = r14, in0
+        adds r15 = -1, r15
+        add r17 = r14, r8
+(p6)    br.cond.dpnt 2b ;;
+        mov ar.lc = r15
+6:
+        add r14 = r16, r17
+        add r15 = r16, in0
+        adds r16 = 1, r18 ;;
         ld1 r14 = [r14]
-        sxt4 r16 = r17  ;;
+        mov r18 = r16 ;;
         st1 [r15] = r14
-        cmp.gtu p6, p7 = in2, r16
-(p6)    br.cond.dptk 2b
+        br.cloop.sptk.few 6b ;;
+        mov ar.lc = r2
 
         mov ar.pfs = loc0