linux-kernel - [x86 setup 13/33] Header file to produce 16-bit code with gcc

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Message-Id: <96024b4c88d58a8473deb48a8038f6893b8b6b55.1184032749.git.hpa@zytor.com>
Date:	Mon,  9 Jul 2007 19:51:52 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	andi@...stfloor.org, akpm@...ux-foundation.org
Cc:	"H. Peter Anvin" <hpa@...or.com>
Subject: [x86 setup 13/33] Header file to produce 16-bit code with gcc

From: H. Peter Anvin <hpa@...or.com>

gcc for i386 can be used with the assembly prefix ".code16gcc" to generate
16-bit (real-mode) code.  This header file provides the assembly prefix.

Signed-off-by: H. Peter Anvin <hpa@...or.com>
---
 arch/i386/boot/code16gcc.h |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
 create mode 100644 arch/i386/boot/code16gcc.h

diff --git a/arch/i386/boot/code16gcc.h b/arch/i386/boot/code16gcc.h
new file mode 100644
index 0000000..dbc6414
--- /dev/null
+++ b/arch/i386/boot/code16gcc.h
@@ -0,0 +1,9 @@
+/*
+ * code16gcc.h
+ *
+ * This file is -include'd when compiling 16-bit C code.
+ */
+
+#ifndef __ASSEMBLY__
+asm(".code16gcc");
+#endif
-- 
1.5.2.2

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