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hexagon: Use sigsp() 

Use sigsp() instead of the open coded variant.

Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Richard Weinberger 2014-03-05 15:24:06 +01:00 committed by Richard Weinberger
parent 4a03ac362e
commit 8bc77aa45e
1 changed files with 3 additions and 11 deletions
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14
arch/hexagon/kernel/signal.c
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@ -36,18 +36,10 @@ struct rt_sigframe {
struct ucontext uc; struct ucontext uc;
}; };
static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
size_t frame_size) size_t frame_size)
{ {
unsigned long sp = regs->r29; unsigned long sp = sigsp(regs->r29, ksig);
/* check if we would overflow the alt stack */
if (on_sig_stack(sp) && !likely(on_sig_stack(sp - frame_size)))
return (void __user __force *)-1UL;
/* Switch to signal stack if appropriate */
if ((ka->sa.sa_flags & SA_ONSTACK) && (sas_ss_flags(sp) == 0))
sp = current->sas_ss_sp + current->sas_ss_size;
return (void __user *)((sp - frame_size) & ~(sizeof(long long) - 1)); return (void __user *)((sp - frame_size) & ~(sizeof(long long) - 1));
} }
@ -119,7 +111,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
struct rt_sigframe __user *frame; struct rt_sigframe __user *frame;
struct hexagon_vdso *vdso = current->mm->context.vdso; struct hexagon_vdso *vdso = current->mm->context.vdso;
frame = get_sigframe(&ksig->ka, regs, sizeof(struct rt_sigframe)); frame = get_sigframe(ksig, regs, sizeof(struct rt_sigframe));
if (!access_ok(VERIFY_WRITE, frame, sizeof(struct rt_sigframe))) if (!access_ok(VERIFY_WRITE, frame, sizeof(struct rt_sigframe)))
return -EFAULT; return -EFAULT;