2008-11-08 03:25:49

by Hiroshi Shimamoto

Subject: [PATCH] x86: signal: cosmetic unification of setup_sigcontext()

From: Hiroshi Shimamoto <[email protected]>

Impact: cleanup

Make setup_sigcontext() same.

Signed-off-by: Hiroshi Shimamoto <[email protected]>
---
arch/x86/kernel/signal_32.c | 32 ++++++++++++++++++++++++++++----
arch/x86/kernel/signal_64.c | 33 ++++++++++++++++++++++++++++-----
2 files changed, 56 insertions(+), 9 deletions(-)

diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c
index 6a05c74..27a5c81 100644
--- a/arch/x86/kernel/signal_32.c
+++ b/arch/x86/kernel/signal_32.c
@@ -279,14 +279,20 @@ static int
setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
struct pt_regs *regs, unsigned long mask)
{
- int tmp, err = 0;
+ int err = 0;

- err |= __put_user(regs->fs, (unsigned int __user *)&sc->fs);
- savesegment(gs, tmp);
- err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
+#ifdef CONFIG_X86_32
+ {
+ unsigned int tmp;

+ savesegment(gs, tmp);
+ err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
+ }
+ err |= __put_user(regs->fs, (unsigned int __user *)&sc->fs);
err |= __put_user(regs->es, (unsigned int __user *)&sc->es);
err |= __put_user(regs->ds, (unsigned int __user *)&sc->ds);
+#endif /* CONFIG_X86_32 */
+
err |= __put_user(regs->di, &sc->di);
err |= __put_user(regs->si, &sc->si);
err |= __put_user(regs->bp, &sc->bp);
@@ -295,13 +301,31 @@ setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
err |= __put_user(regs->dx, &sc->dx);
err |= __put_user(regs->cx, &sc->cx);
err |= __put_user(regs->ax, &sc->ax);
+#ifdef CONFIG_X86_64
+ err |= __put_user(regs->r8, &sc->r8);
+ err |= __put_user(regs->r9, &sc->r9);
+ err |= __put_user(regs->r10, &sc->r10);
+ err |= __put_user(regs->r11, &sc->r11);
+ err |= __put_user(regs->r12, &sc->r12);
+ err |= __put_user(regs->r13, &sc->r13);
+ err |= __put_user(regs->r14, &sc->r14);
+ err |= __put_user(regs->r15, &sc->r15);
+#endif /* CONFIG_X86_64 */
+
err |= __put_user(current->thread.trap_no, &sc->trapno);
err |= __put_user(current->thread.error_code, &sc->err);
err |= __put_user(regs->ip, &sc->ip);
+#ifdef CONFIG_X86_32
err |= __put_user(regs->cs, (unsigned int __user *)&sc->cs);
err |= __put_user(regs->flags, &sc->flags);
err |= __put_user(regs->sp, &sc->sp_at_signal);
err |= __put_user(regs->ss, (unsigned int __user *)&sc->ss);
+#else /* !CONFIG_X86_32 */
+ err |= __put_user(regs->flags, &sc->flags);
+ err |= __put_user(regs->cs, &sc->cs);
+ err |= __put_user(0, &sc->gs);
+ err |= __put_user(0, &sc->fs);
+#endif /* CONFIG_X86_32 */

err |= __put_user(fpstate, &sc->fpstate);

diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index 3868c2a..d2307e4 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -157,16 +157,23 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
/*
* Set up a signal frame.
*/
-
-static inline int
+static int
setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
struct pt_regs *regs, unsigned long mask)
{
int err = 0;

- err |= __put_user(regs->cs, &sc->cs);
- err |= __put_user(0, &sc->gs);
- err |= __put_user(0, &sc->fs);
+#ifdef CONFIG_X86_32
+ {
+ unsigned int tmp;
+
+ savesegment(gs, tmp);
+ err |= __put_user(tmp, (unsigned int __user *)&sc->gs);
+ }
+ err |= __put_user(regs->fs, (unsigned int __user *)&sc->fs);
+ err |= __put_user(regs->es, (unsigned int __user *)&sc->es);
+ err |= __put_user(regs->ds, (unsigned int __user *)&sc->ds);
+#endif /* CONFIG_X86_32 */

err |= __put_user(regs->di, &sc->di);
err |= __put_user(regs->si, &sc->si);
@@ -176,6 +183,7 @@ setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
err |= __put_user(regs->dx, &sc->dx);
err |= __put_user(regs->cx, &sc->cx);
err |= __put_user(regs->ax, &sc->ax);
+#ifdef CONFIG_X86_64
err |= __put_user(regs->r8, &sc->r8);
err |= __put_user(regs->r9, &sc->r9);
err |= __put_user(regs->r10, &sc->r10);
@@ -184,11 +192,26 @@ setup_sigcontext(struct sigcontext __user *sc, void __user *fpstate,
err |= __put_user(regs->r13, &sc->r13);
err |= __put_user(regs->r14, &sc->r14);
err |= __put_user(regs->r15, &sc->r15);
+#endif /* CONFIG_X86_64 */
+
err |= __put_user(current->thread.trap_no, &sc->trapno);
err |= __put_user(current->thread.error_code, &sc->err);
err |= __put_user(regs->ip, &sc->ip);
+#ifdef CONFIG_X86_32
+ err |= __put_user(regs->cs, (unsigned int __user *)&sc->cs);
err |= __put_user(regs->flags, &sc->flags);
+ err |= __put_user(regs->sp, &sc->sp_at_signal);
+ err |= __put_user(regs->ss, (unsigned int __user *)&sc->ss);
+#else /* !CONFIG_X86_32 */
+ err |= __put_user(regs->flags, &sc->flags);
+ err |= __put_user(regs->cs, &sc->cs);
+ err |= __put_user(0, &sc->gs);
+ err |= __put_user(0, &sc->fs);
+#endif /* CONFIG_X86_32 */
+
err |= __put_user(fpstate, &sc->fpstate);
+
+ /* non-iBCS2 extensions.. */
err |= __put_user(mask, &sc->oldmask);
err |= __put_user(current->thread.cr2, &sc->cr2);

--
1.5.6

2008-11-08 09:17:54

by Ingo Molnar

Subject: Re: [PATCH] x86: signal: cosmetic unification of setup_sigcontext()

* Hiroshi Shimamoto <[email protected]> wrote:

> From: Hiroshi Shimamoto <[email protected]>
>
> Impact: cleanup
>
> Make setup_sigcontext() same.
>
> Signed-off-by: Hiroshi Shimamoto <[email protected]>
> ---
> arch/x86/kernel/signal_32.c | 32 ++++++++++++++++++++++++++++----
> arch/x86/kernel/signal_64.c | 33 ++++++++++++++++++++++++++++-----
> 2 files changed, 56 insertions(+), 9 deletions(-)

applied to tip/x86/signal, thanks!

(the 10 patches of yours that are already in tip/x86/signal are
working perfectly)

Ingo