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x86/asm: Add _ASM_BYTES() macro for a .byte ... opcode sequence

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Make it easy to create a sequence of bytes that can be used in either
assembly proper on in a C asm() statement.

Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210510090940.924953-3-hpa@zytor.com
This commit is contained in:
H. Peter Anvin (Intel)
2021-05-10 02:09:39 -07:00
committed by Ingo Molnar
parent be5bb8021c
commit d88be187a6
1 changed files with 2 additions and 0 deletions
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2
arch/x86/include/asm/asm.h
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@@ -13,6 +13,8 @@
# define __ASM_FORM_COMMA(x, ...) " " __stringify(x,##__VA_ARGS__) ","
#endif
#define _ASM_BYTES(x, ...) __ASM_FORM(.byte x,##__VA_ARGS__ ;)
#ifndef __x86_64__
/* 32 bit */
# define __ASM_SEL(a,b) __ASM_FORM(a)