From: "H. Peter Anvin" <hpa@zytor.com>
To: Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <peterz@infradead.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH 2/3] x86/asm: add _ASM_BYTES() macro for a .byte ... opcode sequence
Date: Mon, 10 May 2021 02:09:39 -0700 [thread overview]
Message-ID: <20210510090940.924953-3-hpa@zytor.com> (raw)
In-Reply-To: <20210510090940.924953-1-hpa@zytor.com>
From: "H. Peter Anvin (Intel)" <hpa@zytor.com>
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>
---
arch/x86/include/asm/asm.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index c80899ac0192..1a1e22297867 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -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)
--
2.31.1
next prev parent reply other threads:[~2021-05-10 9:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-10 9:09 [PATCH 0/3] x86/asm: macro improvements in <asm/asm.h> H. Peter Anvin
2021-05-10 9:09 ` [PATCH 1/3] x86/asm: have the __ASM_FORM macros handle commas in arguments H. Peter Anvin
2021-05-10 10:59 ` [tip: x86/asm] x86/asm: Have " tip-bot2 for H. Peter Anvin (Intel)
2021-05-10 9:09 ` H. Peter Anvin [this message]
2021-05-10 10:59 ` [tip: x86/asm] x86/asm: Add _ASM_BYTES() macro for a .byte ... opcode sequence tip-bot2 for H. Peter Anvin (Intel)
2021-05-10 9:09 ` [PATCH 3/3] x86/asm: use _ASM_BYTES() in <asm/nops.h> H. Peter Anvin
2021-05-10 10:59 ` [tip: x86/asm] x86/asm: Use " tip-bot2 for H. Peter Anvin (Intel)
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