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| author | Jeff Garzik <jeff@garzik.org> | 2006-09-04 14:29:54 +0400 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-09-04 14:29:54 +0400 |
| commit | 3784fd7316d336f2ba79b6c7c8168d08eff8a714 (patch) | |
| tree | 3019c37f1ba588f252d1a9f1ef33beb5d3d683b1 /arch/s390/lib/uaccess.S | |
| parent | 7c440e7990ea22c0c374c59a5fbd79b0579d1517 (diff) | |
| parent | c336923b668fdcf0312efbec3b44895d713f4d81 (diff) | |
| download | linux-3784fd7316d336f2ba79b6c7c8168d08eff8a714.tar.xz | |
Merge branch 'master' into upstream
Diffstat (limited to 'arch/s390/lib/uaccess.S')
| -rw-r--r-- | arch/s390/lib/uaccess.S | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/arch/s390/lib/uaccess.S b/arch/s390/lib/uaccess.S index 5d59e2625048..837275284d9f 100644 --- a/arch/s390/lib/uaccess.S +++ b/arch/s390/lib/uaccess.S @@ -88,30 +88,31 @@ __copy_to_user_asm: .globl __copy_in_user_asm # %r2 = from, %r3 = n, %r4 = to __copy_in_user_asm: + ahi %r3,-1 + jo 6f sacf 256 - bras 1,1f - mvc 0(1,%r4),0(%r2) -0: mvc 0(256,%r4),0(%r2) - la %r2,256(%r2) - la %r4,256(%r4) -1: ahi %r3,-256 - jnm 0b -2: ex %r3,0(%r1) - sacf 0 - slr %r2,%r2 - br 14 -3: mvc 0(1,%r4),0(%r2) + bras %r1,4f +0: ahi %r3,257 +1: mvc 0(1,%r4),0(%r2) la %r2,1(%r2) la %r4,1(%r4) ahi %r3,-1 + jnz 1b +2: lr %r2,%r3 + br %r14 +3: mvc 0(256,%r4),0(%r2) + la %r2,256(%r2) + la %r4,256(%r4) +4: ahi %r3,-256 jnm 3b -4: lr %r2,%r3 +5: ex %r3,4(%r1) sacf 0 +6: slr %r2,%r2 br %r14 .section __ex_table,"a" - .long 0b,3b - .long 2b,3b - .long 3b,4b + .long 1b,2b + .long 3b,0b + .long 5b,0b .previous .align 4 |