diff options
Diffstat (limited to 'arch/mips/kernel/signal_n32.c')
| -rw-r--r-- | arch/mips/kernel/signal_n32.c | 37 |
1 files changed, 16 insertions, 21 deletions
diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index 3544208d4b4..ec61b2670ba 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -15,6 +15,8 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <linux/cache.h> +#include <linux/sched.h> #include <linux/sched.h> #include <linux/mm.h> #include <linux/smp.h> @@ -36,6 +38,7 @@ #include <asm/system.h> #include <asm/fpu.h> #include <asm/cpu-features.h> +#include <asm/war.h> #include "signal-common.h" @@ -62,17 +65,18 @@ struct ucontextn32 { sigset_t uc_sigmask; /* mask last for extensibility */ }; -#if PLAT_TRAMPOLINE_STUFF_LINE -#define __tramp __attribute__((aligned(PLAT_TRAMPOLINE_STUFF_LINE))) -#else -#define __tramp -#endif - struct rt_sigframe_n32 { u32 rs_ass[4]; /* argument save space for o32 */ - u32 rs_code[2] __tramp; /* signal trampoline */ - struct siginfo rs_info __tramp; +#if ICACHE_REFILLS_WORKAROUND_WAR + u32 rs_pad[2]; +#else + u32 rs_code[2]; /* signal trampoline */ +#endif + struct siginfo rs_info; struct ucontextn32 rs_uc; +#if ICACHE_REFILLS_WORKAROUND_WAR + u32 rs_code[8] ____cacheline_aligned; /* signal trampoline */ +#endif }; save_static_function(sysn32_rt_sigreturn); @@ -126,7 +130,7 @@ badframe: force_sig(SIGSEGV, current); } -void setup_rt_frame_n32(struct k_sigaction * ka, +int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) { struct rt_sigframe_n32 *frame; @@ -137,17 +141,7 @@ void setup_rt_frame_n32(struct k_sigaction * ka, if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) goto give_sigsegv; - /* - * Set up the return code ... - * - * li v0, __NR_rt_sigreturn - * syscall - */ - if (PLAT_TRAMPOLINE_STUFF_LINE) - __clear_user(frame->rs_code, PLAT_TRAMPOLINE_STUFF_LINE); - err |= __put_user(0x24020000 + __NR_N32_rt_sigreturn, frame->rs_code + 0); - err |= __put_user(0x0000000c , frame->rs_code + 1); - flush_cache_sigtramp((unsigned long) frame->rs_code); + install_sigtramp(frame->rs_code, __NR_N32_rt_sigreturn); /* Create siginfo. */ err |= copy_siginfo_to_user(&frame->rs_info, info); @@ -190,8 +184,9 @@ void setup_rt_frame_n32(struct k_sigaction * ka, current->comm, current->pid, frame, regs->cp0_epc, regs->regs[31]); #endif - return; + return 1; give_sigsegv: force_sigsegv(signr, current); + return 0; } |