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)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210510090940.924953-3-hpa@zytor.com \
--to=hpa@zytor.com \
--cc=bp@alien8.de \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.