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| author | Ingo Molnar <mingo@elte.hu> | 2009-11-26 10:37:55 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-26 10:38:52 +0100 |
| commit | 64b028b22616946a05bf9580f7f7f7ee2ac070b4 (patch) | |
| tree | 923af35553b0115daa2893e9ac16084bce717cd9 | |
| parent | x86: Optimize loadsegment() (diff) | |
| download | linux-64b028b22616946a05bf9580f7f7f7ee2ac070b4.tar.xz linux-64b028b22616946a05bf9580f7f7f7ee2ac070b4.zip | |
x86: Clean up the loadsegment() macro
Make it readable in the source too, not just in the assembly output.
No change in functionality.
Cc: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1259176706-5908-1-git-send-email-brgerst@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/include/asm/system.h | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h index 537395a2877a..022a84386de8 100644 --- a/arch/x86/include/asm/system.h +++ b/arch/x86/include/asm/system.h @@ -155,19 +155,21 @@ extern void native_load_gs_index(unsigned); * Load a segment. Fall back on loading the zero * segment if something goes wrong.. */ -#define loadsegment(seg, value) \ -do { \ - unsigned short __val = value; \ - asm volatile("\n" \ - "1:\t" \ - "movl %k0,%%" #seg "\n" \ - ".section .fixup,\"ax\"\n" \ - "2:\t" \ - "xorl %k0,%k0\n\t" \ - "jmp 1b\n" \ - ".previous\n" \ - _ASM_EXTABLE(1b, 2b) \ - : "+r" (__val) : : "memory"); \ +#define loadsegment(seg, value) \ +do { \ + unsigned short __val = (value); \ + \ + asm volatile(" \n" \ + "1: movl %k0,%%" #seg " \n" \ + \ + ".section .fixup,\"ax\" \n" \ + "2: xorl %k0,%k0 \n" \ + " jmp 1b \n" \ + ".previous \n" \ + \ + _ASM_EXTABLE(1b, 2b) \ + \ + : "+r" (__val) : : "memory"); \ } while (0) /* |