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mn10300: switch to generic sigaltstack

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-23 03:17:06 -05:00
parent 0aa0203fb4
commit b30c7d50af
2 changed files with 3 additions and 13 deletions
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1
arch/mn10300/Kconfig
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@ -10,6 +10,7 @@ config MN10300
select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER
select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA
select GENERIC_SIGALTSTACK
config AM33_2
def_bool n

15
arch/mn10300/kernel/signal.c
View File

@ -76,14 +76,6 @@ asmlinkage long sys_sigaction(int sig,
return ret;
}
/*
* set alternate signal stack syscall
*/
asmlinkage long sys_sigaltstack(const stack_t __user *uss, stack_t *uoss)
{
return do_sigaltstack(uss, uoss, current_frame()->sp);
}
/*
* do a signal return; undo the signal stack.
*/
@ -193,8 +185,7 @@ asmlinkage long sys_rt_sigreturn(void)
if (restore_sigcontext(current_frame(), &frame->uc.uc_mcontext, &d0))
goto badframe;
if (do_sigaltstack(&frame->uc.uc_stack, NULL, current_frame()->sp) ==
-EFAULT)
if (restore_altstack(&frame->uc.uc_stack))
goto badframe;
return d0;
@ -359,9 +350,7 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
/* create the ucontext. */
if (__put_user(0, &frame->uc.uc_flags) ||
__put_user(0, &frame->uc.uc_link) ||
__put_user((void *)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp) ||
__put_user(sas_ss_flags(regs->sp), &frame->uc.uc_stack.ss_flags) ||
__put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size) ||
__save_altstack(&frame->uc.uc_stack, regs->sp) ||
setup_sigcontext(&frame->uc.uc_mcontext,
&frame->fpuctx, regs, set->sig[0]) ||
__copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)))