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yaml
---
r: 29620
b: refs/heads/master
c: 6807148
h: refs/heads/master
v: v3
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Russell King authored and Russell King committed Jun 18, 2006
1 parent c43bc25 commit 554b1f4
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Showing 2 changed files with 34 additions and 44 deletions.
2 changes: 1 addition & 1 deletion [refs]
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Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: cb3504e8fa84870aabcf51c67e29675817e30836
refs/heads/master: 680714844fd1dcc6f03b22353103985be9d58db6
76 changes: 33 additions & 43 deletions trunk/arch/arm/kernel/signal.c
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Original file line number Diff line number Diff line change
Expand Up @@ -203,39 +203,47 @@ struct rt_sigframe {
struct sigframe sig;
};

static int
restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
struct aux_sigframe __user *aux)
static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf)
{
int err = 0;
sigset_t set;
int err;

__get_user_error(regs->ARM_r0, &sc->arm_r0, err);
__get_user_error(regs->ARM_r1, &sc->arm_r1, err);
__get_user_error(regs->ARM_r2, &sc->arm_r2, err);
__get_user_error(regs->ARM_r3, &sc->arm_r3, err);
__get_user_error(regs->ARM_r4, &sc->arm_r4, err);
__get_user_error(regs->ARM_r5, &sc->arm_r5, err);
__get_user_error(regs->ARM_r6, &sc->arm_r6, err);
__get_user_error(regs->ARM_r7, &sc->arm_r7, err);
__get_user_error(regs->ARM_r8, &sc->arm_r8, err);
__get_user_error(regs->ARM_r9, &sc->arm_r9, err);
__get_user_error(regs->ARM_r10, &sc->arm_r10, err);
__get_user_error(regs->ARM_fp, &sc->arm_fp, err);
__get_user_error(regs->ARM_ip, &sc->arm_ip, err);
__get_user_error(regs->ARM_sp, &sc->arm_sp, err);
__get_user_error(regs->ARM_lr, &sc->arm_lr, err);
__get_user_error(regs->ARM_pc, &sc->arm_pc, err);
__get_user_error(regs->ARM_cpsr, &sc->arm_cpsr, err);
err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set));
if (err == 0) {
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
}

__get_user_error(regs->ARM_r0, &sf->uc.uc_mcontext.arm_r0, err);
__get_user_error(regs->ARM_r1, &sf->uc.uc_mcontext.arm_r1, err);
__get_user_error(regs->ARM_r2, &sf->uc.uc_mcontext.arm_r2, err);
__get_user_error(regs->ARM_r3, &sf->uc.uc_mcontext.arm_r3, err);
__get_user_error(regs->ARM_r4, &sf->uc.uc_mcontext.arm_r4, err);
__get_user_error(regs->ARM_r5, &sf->uc.uc_mcontext.arm_r5, err);
__get_user_error(regs->ARM_r6, &sf->uc.uc_mcontext.arm_r6, err);
__get_user_error(regs->ARM_r7, &sf->uc.uc_mcontext.arm_r7, err);
__get_user_error(regs->ARM_r8, &sf->uc.uc_mcontext.arm_r8, err);
__get_user_error(regs->ARM_r9, &sf->uc.uc_mcontext.arm_r9, err);
__get_user_error(regs->ARM_r10, &sf->uc.uc_mcontext.arm_r10, err);
__get_user_error(regs->ARM_fp, &sf->uc.uc_mcontext.arm_fp, err);
__get_user_error(regs->ARM_ip, &sf->uc.uc_mcontext.arm_ip, err);
__get_user_error(regs->ARM_sp, &sf->uc.uc_mcontext.arm_sp, err);
__get_user_error(regs->ARM_lr, &sf->uc.uc_mcontext.arm_lr, err);
__get_user_error(regs->ARM_pc, &sf->uc.uc_mcontext.arm_pc, err);
__get_user_error(regs->ARM_cpsr, &sf->uc.uc_mcontext.arm_cpsr, err);

err |= !valid_user_regs(regs);

#ifdef CONFIG_IWMMXT
if (err == 0 && test_thread_flag(TIF_USING_IWMMXT))
err |= restore_iwmmxt_context(&aux->iwmmxt);
err |= restore_iwmmxt_context(&sf->aux.iwmmxt);
#endif
#ifdef CONFIG_VFP
// if (err == 0)
// err |= vfp_restore_state(&aux->vfp);
// err |= vfp_restore_state(&sf->aux.vfp);
#endif

return err;
Expand All @@ -244,7 +252,6 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
asmlinkage int sys_sigreturn(struct pt_regs *regs)
{
struct sigframe __user *frame;
sigset_t set;

/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
Expand All @@ -261,16 +268,8 @@ asmlinkage int sys_sigreturn(struct pt_regs *regs)

if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;

sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);

if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &frame->aux))
if (restore_sigframe(regs, frame))
goto badframe;

/* Send SIGTRAP if we're single-stepping */
Expand All @@ -289,7 +288,6 @@ asmlinkage int sys_sigreturn(struct pt_regs *regs)
asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
sigset_t set;

/* Always make any pending restarted system calls return -EINTR */
current_thread_info()->restart_block.fn = do_no_restart_syscall;
Expand All @@ -306,16 +304,8 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)

if (!access_ok(VERIFY_READ, frame, sizeof (*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->sig.uc.uc_sigmask, sizeof(set)))
goto badframe;

sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);

if (restore_sigcontext(regs, &frame->sig.uc.uc_mcontext, &frame->sig.aux))
if (restore_sigframe(regs, &frame->sig))
goto badframe;

if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->ARM_sp) == -EFAULT)
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