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x86: ia32_signal: introduce GET_SEG() macro

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Impact: cleanup

introduce GET_SEG() macro like arch/x86/kernel/signal.c.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Hiroshi Shimamoto 2009-02-20 19:00:13 -08:00 committed by Ingo Molnar
parent a47e3ec197
commit 8801ead40c
1 changed files with 9 additions and 5 deletions
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14
arch/x86/ia32/ia32_signal.c
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@ -192,11 +192,15 @@ asmlinkage long sys32_sigaltstack(const stack_ia32_t __user *uss_ptr,
get_user_ex(regs->x, &sc->x); \
}
#define COPY_SEG_CPL3(seg) { \
unsigned short tmp; \
get_user_ex(tmp, &sc->seg); \
regs->seg = tmp | 3; \
}
#define GET_SEG(seg) ({ \
unsigned short tmp; \
get_user_ex(tmp, &sc->seg); \
tmp; \
})
#define COPY_SEG_CPL3(seg) do { \
regs->seg = GET_SEG(seg) | 3; \
} while (0)
#define RELOAD_SEG(seg) { \
unsigned int cur, pre; \