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MIPS: Fix sign-extension bug in 32-bit kernel on 32-bit hardware.

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Probably nobody does arithmetic on cp0 register values so this has never
bitten.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2009-04-30 02:16:19 +02:00
parent 5c5dd1d291
commit 0b54352600
1 changed files with 4 additions and 4 deletions
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8
arch/mips/include/asm/mipsregs.h
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@ -728,8 +728,8 @@ do { \
".set\tmips64\n\t" \
"dmfc0\t%M0, " #source "\n\t" \
"dsll\t%L0, %M0, 32\n\t" \
"dsrl\t%M0, %M0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsra\t%M0, %M0, 32\n\t" \
"dsra\t%L0, %L0, 32\n\t" \
".set\tmips0" \
: "=r" (__val)); \
else \
@ -737,8 +737,8 @@ do { \
".set\tmips64\n\t" \
"dmfc0\t%M0, " #source ", " #sel "\n\t" \
"dsll\t%L0, %M0, 32\n\t" \
"dsrl\t%M0, %M0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsra\t%M0, %M0, 32\n\t" \
"dsra\t%L0, %L0, 32\n\t" \
".set\tmips0" \
: "=r" (__val)); \
local_irq_restore(__flags); \