arm64: compat: map SPSR_ELx<->PSR for signals

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The SPSR_ELx format for exceptions taken from AArch32 differs from the
AArch32 PSR format. Thus, we must translate between the two when setting
up a compat sigframe, or restoring context from a compat sigframe.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Fixes: 7206dc93a5 ("arm64: Expose Arm v8.4 features")
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Suzuki Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Mark Rutland 2018-07-05 15:16:50 +01:00 • committed by Will Deacon

parent 1265132127

commit 25dc2c80cf

1 changed files with 6 additions and 2 deletions

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arch/arm64/kernel/signal32.c

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