diff options
Diffstat (limited to 'arch/mips/kernel/signal32.c')
| -rw-r--r-- | arch/mips/kernel/signal32.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 183fc7e55f3..1b9262d3fd2 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -139,8 +139,20 @@ struct ucontext32 { sigset_t32 uc_sigmask; /* mask last for extensibility */ }; +/* + * Horribly complicated - with the bloody RM9000 workarounds enabled + * the signal trampolines is moving to the end of the structure so we can + * increase the alignment without breaking software compatibility. + */ #if ICACHE_REFILLS_WORKAROUND_WAR == 0 +struct sigframe32 { + u32 sf_ass[4]; /* argument save space for o32 */ + u32 sf_code[2]; /* signal trampoline */ + struct sigcontext32 sf_sc; + sigset_t sf_mask; +}; + struct rt_sigframe32 { u32 rs_ass[4]; /* argument save space for o32 */ u32 rs_code[2]; /* signal trampoline */ @@ -150,6 +162,14 @@ struct rt_sigframe32 { #else /* ICACHE_REFILLS_WORKAROUND_WAR */ +struct sigframe32 { + u32 sf_ass[4]; /* argument save space for o32 */ + u32 sf_pad[2]; + struct sigcontext32 sf_sc; /* hw context */ + sigset_t sf_mask; + u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */ +}; + struct rt_sigframe32 { u32 rs_ass[4]; /* argument save space for o32 */ u32 rs_pad[2]; @@ -493,10 +513,10 @@ int copy_siginfo_to_user32(compat_siginfo_t __user *to, siginfo_t *from) asmlinkage void sys32_sigreturn(nabi_no_regargs struct pt_regs regs) { - struct sigframe __user *frame; + struct sigframe32 __user *frame; sigset_t blocked; - frame = (struct sigframe __user *) regs.regs[29]; + frame = (struct sigframe32 __user *) regs.regs[29]; if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) goto badframe; if (__copy_from_user(&blocked, &frame->sf_mask, sizeof(blocked))) @@ -581,7 +601,7 @@ badframe: int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set) { - struct sigframe __user *frame; + struct sigframe32 __user *frame; int err = 0; frame = get_sigframe(ka, regs, sizeof(*frame)); |