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arm64: asm: add CPU_LE & CPU_BE assembler helpers

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Add CPU_LE and CPU_BE to select assembler code in little and big
endian configurations respectively.

Signed-off-by: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Matthew Leach 2013-10-11 14:52:15 +01:00 committed by Catalin Marinas
parent a1d5ebaf8c
commit e68bedaa03
1 changed files with 19 additions and 0 deletions
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19
arch/arm64/include/asm/assembler.h
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@ -115,6 +115,25 @@ lr .req x30 // link register
.align 7
b \label
.endm
/*
* Select code when configured for BE.
*/
#ifdef CONFIG_CPU_BIG_ENDIAN
#define CPU_BE(code...) code
#else
#define CPU_BE(code...)
#endif
/*
* Select code when configured for LE.
*/
#ifdef CONFIG_CPU_BIG_ENDIAN
#define CPU_LE(code...)
#else
#define CPU_LE(code...) code
#endif
/*
* Define a macro that constructs a 64-bit value by concatenating two
* 32-bit registers. Note that on big endian systems the order of the