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| author |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-11-18 14:39:24 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-11-18 14:39:24 +1100 |
| commit | acbfd58e8a1f24ef644a90a90825c3f435b990f5 (patch) | |
| tree | 8dc0e5cbfe08a8a4caa696335bd46b3be2d85d20 /arch/powerpc/boot/div64.S | |
| parent | Fix build failure due to hwirq.h needing smp_lock.h (diff) | |
| download | linux-dev-acbfd58e8a1f24ef644a90a90825c3f435b990f5.tar.xz linux-dev-acbfd58e8a1f24ef644a90a90825c3f435b990f5.zip | |
powerpc: Fix div64 in bootloader
The code is missing a fix that went into the main kernel variant
(we should try to share that code again at some stage)
Reported-by: Albert Cahalan <acahalan@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/boot/div64.S')
| -rw-r--r-- | arch/powerpc/boot/div64.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/boot/div64.S b/arch/powerpc/boot/div64.S index 722f360a32a9..d271ab542673 100644 --- a/arch/powerpc/boot/div64.S +++ b/arch/powerpc/boot/div64.S @@ -33,9 +33,10 @@ __div64_32: cntlzw r0,r5 # we are shifting the dividend right li r10,-1 # to make it < 2^32, and shifting srw r10,r10,r0 # the divisor right the same amount, - add r9,r4,r10 # rounding up (so the estimate cannot + addc r9,r4,r10 # rounding up (so the estimate cannot andc r11,r6,r10 # ever be too large, only too small) andc r9,r9,r10 + addze r9,r9 or r11,r5,r11 rotlw r9,r9,r0 rotlw r11,r11,r0 |