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| author | Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> | 2008-11-17 15:47:06 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-11-18 16:55:34 +0100 |
| commit | d71a68dca54756049e0eae62458a1705bf680d09 (patch) | |
| tree | 80e9e8103ebe7417185335b9d886d76fa0635324 /arch/x86/ia32 | |
| parent | b78a5b5260abf90d574911e7c7b8d35d5b48d6c0 (diff) | |
| download | blackbird-op-linux-d71a68dca54756049e0eae62458a1705bf680d09.tar.gz blackbird-op-linux-d71a68dca54756049e0eae62458a1705bf680d09.zip | |
x86: ia32_signal: introduce COPY_SEG_CPL3
Impact: cleanup
Introduce COPY_SEG_CPL3 for ia32_restore_sigcontext().
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/ia32')
| -rw-r--r-- | arch/x86/ia32/ia32_signal.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index 610a17774ea2..fe44c314c9c0 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -201,6 +201,12 @@ struct rt_sigframe err |= __get_user(regs->x, &sc->x); \ } +#define COPY_SEG_CPL3(seg) { \ + unsigned short tmp; \ + err |= __get_user(tmp, &sc->seg); \ + regs->seg = tmp | 3; \ +} + #define RELOAD_SEG(seg,mask) \ { unsigned int cur; \ unsigned short pre; \ @@ -246,10 +252,8 @@ static int ia32_restore_sigcontext(struct pt_regs *regs, COPY(dx); COPY(cx); COPY(ip); /* Don't touch extended registers */ - err |= __get_user(regs->cs, &sc->cs); - regs->cs |= 3; - err |= __get_user(regs->ss, &sc->ss); - regs->ss |= 3; + COPY_SEG_CPL3(cs); + COPY_SEG_CPL3(ss); err |= __get_user(tmpflags, &sc->flags); regs->flags = (regs->flags & ~FIX_EFLAGS) | (tmpflags & FIX_EFLAGS); |
