From: Benjamin Herrenschmidt Date: Thu, 18 Nov 2010 03:39:24 +0000 (+1100) Subject: powerpc: Fix div64 in bootloader X-Git-Tag: v3.12-rc1~8136^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=acbfd58e8a1f24ef644a90a90825c3f435b990f5;p=kernel%2Fkernel-generic.git 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 Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/boot/div64.S b/arch/powerpc/boot/div64.S index 722f360..d271ab5 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