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Commit e68bedaa authored by Matthew Leach's avatar Matthew Leach Committed by Catalin Marinas
Browse files

arm64: asm: add CPU_LE & CPU_BE assembler helpers 



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

Signed-off-by: default avatarMatthew Leach <matthew.leach@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent a1d5ebaf

arch/arm64/include/asm/assembler.h

+19 −0
Original line number Diff line number Diff line
@@ -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