diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 03:52:33 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-03 18:16:23 -0500 |
| commit | 50b3c9e30a53172b627081e7129c03ef53f27319 (patch) | |
| tree | df6c605eb279c00ebf114f07b3ead4e8d690fbc0 /arch/unicore32 | |
| parent | 0aa0203fb43f04714004b2c4ad33b858e240555d (diff) | |
unicore32: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/unicore32')
| -rw-r--r-- | arch/unicore32/Kconfig | 1 | ||||
| -rw-r--r-- | arch/unicore32/kernel/entry.S | 5 | ||||
| -rw-r--r-- | arch/unicore32/kernel/signal.c | 12 |
3 files changed, 3 insertions, 15 deletions
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index 60651df5f952..a62786fdcaab 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -16,6 +16,7 @@ config UNICORE32 select ARCH_WANT_FRAME_POINTERS select GENERIC_IOMAP select MODULES_USE_ELF_REL + select GENERIC_SIGALTSTACK help UniCore-32 is 32-bit Instruction Set Architecture, including a series of low-power-consumption RISC chip diff --git a/arch/unicore32/kernel/entry.S b/arch/unicore32/kernel/entry.S index 581630d91444..bcdedd80890e 100644 --- a/arch/unicore32/kernel/entry.S +++ b/arch/unicore32/kernel/entry.S @@ -674,11 +674,6 @@ ENTRY(sys_rt_sigreturn) b __sys_rt_sigreturn ENDPROC(sys_rt_sigreturn) -ENTRY(sys_sigaltstack) - ldw r2, [sp+], #S_OFF + S_SP - b do_sigaltstack -ENDPROC(sys_sigaltstack) - __INIT /* diff --git a/arch/unicore32/kernel/signal.c b/arch/unicore32/kernel/signal.c index b8b2ffd774d6..6905f0ebdc77 100644 --- a/arch/unicore32/kernel/signal.c +++ b/arch/unicore32/kernel/signal.c @@ -123,8 +123,7 @@ asmlinkage int __sys_rt_sigreturn(struct pt_regs *regs) if (restore_sigframe(regs, &frame->sig)) goto badframe; - if (do_sigaltstack(&frame->sig.uc.uc_stack, NULL, regs->UCreg_sp) - == -EFAULT) + if (restore_altstack(&frame->sig.uc.uc_stack)) goto badframe; return regs->UCreg_00; @@ -265,7 +264,6 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, { struct rt_sigframe __user *frame = get_sigframe(ka, regs, sizeof(*frame)); - stack_t stack; int err = 0; if (!frame) @@ -275,13 +273,7 @@ static int setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(0, &frame->sig.uc.uc_flags); err |= __put_user(NULL, &frame->sig.uc.uc_link); - - memset(&stack, 0, sizeof(stack)); - stack.ss_sp = (void __user *)current->sas_ss_sp; - stack.ss_flags = sas_ss_flags(regs->UCreg_sp); - stack.ss_size = current->sas_ss_size; - err |= __copy_to_user(&frame->sig.uc.uc_stack, &stack, sizeof(stack)); - + err |= __save_altstack(&frame->sig.uc.uc_stack, regs->UCreg_sp); err |= setup_sigframe(&frame->sig, regs, set); if (err == 0) err |= setup_return(regs, ka, frame->sig.retcode, frame, usig); |