diff options
Diffstat (limited to 'arch/x86/lib/atomic64_cx8_32.S')
| -rw-r--r-- | arch/x86/lib/atomic64_cx8_32.S | 29 |
1 files changed, 11 insertions, 18 deletions
diff --git a/arch/x86/lib/atomic64_cx8_32.S b/arch/x86/lib/atomic64_cx8_32.S index 391a083674b4..f5cc9eb1d51b 100644 --- a/arch/x86/lib/atomic64_cx8_32.S +++ b/arch/x86/lib/atomic64_cx8_32.S @@ -55,8 +55,6 @@ ENDPROC(atomic64_set_cx8) ENTRY(atomic64_xchg_cx8) CFI_STARTPROC - movl %ebx, %eax - movl %ecx, %edx 1: LOCK_PREFIX cmpxchg8b (%esi) @@ -78,7 +76,7 @@ ENTRY(atomic64_\func\()_return_cx8) movl %edx, %edi movl %ecx, %ebp - read64 %ebp + read64 %ecx 1: movl %eax, %ebx movl %edx, %ecx @@ -159,23 +157,22 @@ ENTRY(atomic64_add_unless_cx8) SAVE ebx /* these just push these two parameters on the stack */ SAVE edi - SAVE esi + SAVE ecx - movl %ecx, %ebp - movl %eax, %esi + movl %eax, %ebp movl %edx, %edi - read64 %ebp + read64 %esi 1: cmpl %eax, 0(%esp) je 4f 2: movl %eax, %ebx movl %edx, %ecx - addl %esi, %ebx + addl %ebp, %ebx adcl %edi, %ecx LOCK_PREFIX - cmpxchg8b (%ebp) + cmpxchg8b (%esi) jne 1b movl $1, %eax @@ -199,13 +196,13 @@ ENTRY(atomic64_inc_not_zero_cx8) read64 %esi 1: - testl %eax, %eax - je 4f -2: + movl %eax, %ecx + orl %edx, %ecx + jz 3f movl %eax, %ebx - movl %edx, %ecx + xorl %ecx, %ecx addl $1, %ebx - adcl $0, %ecx + adcl %edx, %ecx LOCK_PREFIX cmpxchg8b (%esi) jne 1b @@ -214,9 +211,5 @@ ENTRY(atomic64_inc_not_zero_cx8) 3: RESTORE ebx ret -4: - testl %edx, %edx - jne 2b - jmp 3b CFI_ENDPROC ENDPROC(atomic64_inc_not_zero_cx8) |