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Commit 0b543526 authored Apr 30, 2009 by Ralf Baechle

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



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

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 5c5dd1d2

arch/mips/include/asm/mipsregs.h

+4 −4

Original line number	Diff line number	Diff line
		@@ -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); \