diff options
| author | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-06-26 07:31:38 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2006-06-26 07:31:38 +0200 |
| commit | 4854c7b27f0975a2b629f35ea3996d2968eb7c4f (patch) | |
| tree | 4102bdb70289764a2058aff0f907b13d7cf0e0d1 /arch/powerpc/kernel/signal_64.c | |
| parent | Input: fix accuracy of fixp-arith.h (diff) | |
| parent | [PATCH] uclinux: use PER_LINUX_32BIT in binfmt_flat (diff) | |
| download | linux-4854c7b27f0975a2b629f35ea3996d2968eb7c4f.tar.xz linux-4854c7b27f0975a2b629f35ea3996d2968eb7c4f.zip | |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/powerpc/kernel/signal_64.c')
| -rw-r--r-- | arch/powerpc/kernel/signal_64.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 27f65b95184d..6e75d7ab6d4d 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -141,9 +141,7 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, unsigned long err = 0; unsigned long save_r13 = 0; elf_greg_t *gregs = (elf_greg_t *)regs; -#ifdef CONFIG_ALTIVEC unsigned long msr; -#endif int i; /* If this is not a signal return, we preserve the TLS in r13 */ @@ -154,7 +152,12 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, err |= __copy_from_user(regs, &sc->gp_regs, PT_MSR*sizeof(unsigned long)); - /* skip MSR and SOFTE */ + /* get MSR separately, transfer the LE bit if doing signal return */ + err |= __get_user(msr, &sc->gp_regs[PT_MSR]); + if (sig) + regs->msr = (regs->msr & ~MSR_LE) | (msr & MSR_LE); + + /* skip SOFTE */ for (i = PT_MSR+1; i <= PT_RESULT; i++) { if (i == PT_SOFTE) continue; @@ -179,9 +182,10 @@ static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, #ifdef CONFIG_ALTIVEC err |= __get_user(v_regs, &sc->v_regs); - err |= __get_user(msr, &sc->gp_regs[PT_MSR]); if (err) return err; + if (v_regs && !access_ok(VERIFY_READ, v_regs, 34 * sizeof(vector128))) + return -EFAULT; /* Copy 33 vec registers (vr0..31 and vscr) from the stack */ if (v_regs != 0 && (msr & MSR_VEC) != 0) err |= __copy_from_user(current->thread.vr, v_regs, @@ -394,8 +398,8 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, current->thread.fpscr.val = 0; /* Set up to return from userspace. */ - if (vdso64_rt_sigtramp && current->thread.vdso_base) { - regs->link = current->thread.vdso_base + vdso64_rt_sigtramp; + if (vdso64_rt_sigtramp && current->mm->context.vdso_base) { + regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp; } else { err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]); if (err) @@ -410,6 +414,8 @@ static int setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info, /* Set up "regs" so we "return" to the signal handler. */ err |= get_user(regs->nip, &funct_desc_ptr->entry); + /* enter the signal handler in big-endian mode */ + regs->msr &= ~MSR_LE; regs->gpr[1] = newsp; err |= get_user(regs->gpr[2], &funct_desc_ptr->toc); regs->gpr[3] = signr; |