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PPC: Add asm helpers for BE 32bit load/store

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From assembly code we might not only have to explicitly BE access 64bit values,
but sometimes also 32bit ones. Add helpers that allow for easy use of lwzx/stwx
in their respective byte-reverse or native form.

Signed-off-by: Alexander Graf <agraf@suse.de>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Alexander Graf 2014-06-11 10:07:40 +02:00
parent d57cef91a0
commit 8f6822c4b9
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/include/asm/asm-compat.h
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@ -34,10 +34,14 @@
#define PPC_MIN_STKFRM 112
#ifdef __BIG_ENDIAN__
#define LWZX_BE stringify_in_c(lwzx)
#define LDX_BE stringify_in_c(ldx)
#define STWX_BE stringify_in_c(stwx)
#define STDX_BE stringify_in_c(stdx)
#else
#define LWZX_BE stringify_in_c(lwbrx)
#define LDX_BE stringify_in_c(ldbrx)
#define STWX_BE stringify_in_c(stwbrx)
#define STDX_BE stringify_in_c(stdbrx)
#endif