From c6a2f4679331206ef5d353fc9a6cda2fa4aef8c6 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Sat, 10 Mar 2007 01:03:48 +0900 Subject: [MIPS] Check FCSR for pending interrupts, alternative version Commit 6d6671066a311703bca1b91645bb1e04cc983387 is incomplete and misses non-r4k CPUs. This patch reverts the commit and fixes in other way. o Do FCSR checking in caller of restore_fp_context. o Send SIGFPE if the signal handler set any FPU exception bits. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- arch/mips/kernel/signal_n32.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'arch/mips/kernel/signal_n32.c') diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index ecf1f7ecaad9..a9202fa95987 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -127,6 +127,7 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) sigset_t set; stack_t st; s32 sp; + int sig; frame = (struct rt_sigframe_n32 __user *) regs.regs[29]; if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) @@ -140,8 +141,11 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); - if (restore_sigcontext(®s, &frame->rs_uc.uc_mcontext)) + sig = restore_sigcontext(®s, &frame->rs_uc.uc_mcontext); + if (sig < 0) goto badframe; + else if (sig) + force_sig(sig, current); /* The ucontext contains a stack32_t, so we must convert! */ if (__get_user(sp, &frame->rs_uc.uc_stack.ss_sp)) -- cgit v1.2.3