diff options
| -rw-r--r-- | arch/mips/kernel/process.c | 33 | ||||
| -rw-r--r-- | arch/mips/kernel/signal.c | 18 | ||||
| -rw-r--r-- | arch/mips/kernel/signal32.c | 118 | ||||
| -rw-r--r-- | arch/mips/kernel/signal_n32.c | 8 | ||||
| -rw-r--r-- | include/asm-mips/abi.h | 2 | ||||
| -rw-r--r-- | include/asm-mips/compat-signal.h | 3 | ||||
| -rw-r--r-- | include/asm-mips/signal.h | 17 |
7 files changed, 35 insertions, 164 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 04e5b38..9704c21 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -26,7 +26,6 @@ #include <linux/completion.h> #include <linux/kallsyms.h> -#include <asm/abi.h> #include <asm/bootinfo.h> #include <asm/cpu.h> #include <asm/dsp.h> @@ -66,38 +65,6 @@ ATTRIB_NORET void cpu_idle(void) } } -/* - * Native o32 and N64 ABI without DSP ASE - */ -struct mips_abi mips_abi = { - .do_signal = do_signal, -#ifdef CONFIG_TRAD_SIGNALS - .setup_frame = setup_frame, -#endif - .setup_rt_frame = setup_rt_frame -}; - -#ifdef CONFIG_MIPS32_O32 -/* - * o32 compatibility on 64-bit kernels, without DSP ASE - */ -struct mips_abi mips_abi_32 = { - .do_signal = do_signal32, - .setup_frame = setup_frame_32, - .setup_rt_frame = setup_rt_frame_32 -}; -#endif /* CONFIG_MIPS32_O32 */ - -#ifdef CONFIG_MIPS32_N32 -/* - * N32 on 64-bit kernels, without DSP ASE - */ -struct mips_abi mips_abi_n32 = { - .do_signal = do_signal, - .setup_rt_frame = setup_rt_frame_n32 -}; -#endif /* CONFIG_MIPS32_N32 */ - asmlinkage void ret_from_fork(void); void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp) diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index b2e9ab1..adbfb95 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -398,7 +398,7 @@ badframe: } #ifdef CONFIG_TRAD_SIGNALS -int setup_frame(struct k_sigaction * ka, struct pt_regs *regs, +static int setup_frame(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set) { struct sigframe __user *frame; @@ -443,7 +443,7 @@ give_sigsegv: } #endif -int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, +static int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) { struct rt_sigframe __user *frame; @@ -501,6 +501,14 @@ give_sigsegv: return -EFAULT; } +struct mips_abi mips_abi = { +#ifdef CONFIG_TRAD_SIGNALS + .setup_frame = setup_frame, +#endif + .setup_rt_frame = setup_rt_frame, + .restart = __NR_restart_syscall +}; + static int handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs) { @@ -539,7 +547,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info, return ret; } -void do_signal(struct pt_regs *regs) +static void do_signal(struct pt_regs *regs) { struct k_sigaction ka; sigset_t *oldset; @@ -589,7 +597,7 @@ void do_signal(struct pt_regs *regs) regs->cp0_epc -= 8; } if (regs->regs[2] == ERESTART_RESTARTBLOCK) { - regs->regs[2] = __NR_restart_syscall; + regs->regs[2] = current->thread.abi->restart; regs->regs[7] = regs->regs[26]; regs->cp0_epc -= 4; } @@ -615,5 +623,5 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused, { /* deal with pending signal delivery */ if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) - current->thread.abi->do_signal(regs); + do_signal(regs); } diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 9f829f6..02062fc 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -104,7 +104,7 @@ typedef struct compat_siginfo { */ #define __NR_O32_sigreturn 4119 #define __NR_O32_rt_sigreturn 4193 -#define __NR_O32_restart_syscall 4253 +#define __NR_O32_restart_syscall 4253 /* 32-bit compatibility types */ @@ -598,7 +598,7 @@ badframe: force_sig(SIGSEGV, current); } -int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, +static int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set) { struct sigframe32 __user *frame; @@ -644,7 +644,7 @@ give_sigsegv: return -EFAULT; } -int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, +static int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info) { struct rt_sigframe32 __user *frame; @@ -704,110 +704,14 @@ give_sigsegv: return -EFAULT; } -static inline int handle_signal(unsigned long sig, siginfo_t *info, - struct k_sigaction *ka, sigset_t *oldset, struct pt_regs * regs) -{ - int ret; - - switch (regs->regs[0]) { - case ERESTART_RESTARTBLOCK: - case ERESTARTNOHAND: - regs->regs[2] = EINTR; - break; - case ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { - regs->regs[2] = EINTR; - break; - } - /* fallthrough */ - case ERESTARTNOINTR: /* Userland will reload $v0. */ - regs->regs[7] = regs->regs[26]; - regs->cp0_epc -= 8; - } - - regs->regs[0] = 0; /* Don't deal with this again. */ - - if (ka->sa.sa_flags & SA_SIGINFO) - ret = current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info); - else - ret = current->thread.abi->setup_frame(ka, regs, sig, oldset); - - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked,sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - return ret; -} - -void do_signal32(struct pt_regs *regs) -{ - struct k_sigaction ka; - sigset_t *oldset; - siginfo_t info; - int signr; - - /* - * We want the common case to go fast, which is why we may in certain - * cases get here from kernel mode. Just return without doing anything - * if so. - */ - if (!user_mode(regs)) - return; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - /* Whee! Actually deliver the signal. */ - if (handle_signal(signr, &info, &ka, oldset, regs) == 0) { - /* - * A signal was successfully delivered; the saved - * sigmask will have been stored in the signal frame, - * and will be restored by sigreturn, so we can simply - * clear the TIF_RESTORE_SIGMASK flag. - */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - clear_thread_flag(TIF_RESTORE_SIGMASK); - } - - return; - } - - /* - * Who's code doesn't conform to the restartable syscall convention - * dies here!!! The li instruction, a single machine instruction, - * must directly be followed by the syscall instruction. - */ - if (regs->regs[0]) { - if (regs->regs[2] == ERESTARTNOHAND || - regs->regs[2] == ERESTARTSYS || - regs->regs[2] == ERESTARTNOINTR) { - regs->regs[7] = regs->regs[26]; - regs->cp0_epc -= 8; - } - if (regs->regs[2] == ERESTART_RESTARTBLOCK) { - regs->regs[2] = __NR_O32_restart_syscall; - regs->regs[7] = regs->regs[26]; - regs->cp0_epc -= 4; - } - regs->regs[0] = 0; /* Don't deal with this again. */ - } - - /* - * If there's no signal to deliver, we just put the saved sigmask - * back - */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } -} +/* + * o32 compatibility on 64-bit kernels, without DSP ASE + */ +struct mips_abi mips_abi_32 = { + .setup_frame = setup_frame_32, + .setup_rt_frame = setup_rt_frame_32, + .restart = __NR_O32_restart_syscall +}; asmlinkage int sys32_rt_sigaction(int sig, const struct sigaction32 __user *act, struct sigaction32 __user *oact, diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index 7ca2a07..ecf1f7e 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -29,6 +29,7 @@ #include <linux/compat.h> #include <linux/bitops.h> +#include <asm/abi.h> #include <asm/asm.h> #include <asm/cacheflush.h> #include <asm/compat-signal.h> @@ -169,7 +170,7 @@ badframe: force_sig(SIGSEGV, current); } -int setup_rt_frame_n32(struct k_sigaction * ka, +static 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 __user *frame; @@ -228,3 +229,8 @@ give_sigsegv: force_sigsegv(signr, current); return -EFAULT; } + +struct mips_abi mips_abi_n32 = { + .setup_rt_frame = setup_rt_frame_n32, + .restart = __NR_N32_restart_syscall +}; diff --git a/include/asm-mips/abi.h b/include/asm-mips/abi.h index 1ce0518..1dd74fb 100644 --- a/include/asm-mips/abi.h +++ b/include/asm-mips/abi.h @@ -13,13 +13,13 @@ #include <asm/siginfo.h> struct mips_abi { - void (* const do_signal)(struct pt_regs *regs); int (* const setup_frame)(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set); int (* const setup_rt_frame)(struct k_sigaction * ka, struct pt_regs *regs, int signr, sigset_t *set, siginfo_t *info); + const unsigned long restart; }; #endif /* _ASM_ABI_H */ diff --git a/include/asm-mips/compat-signal.h b/include/asm-mips/compat-signal.h index 20ac29ff..6599a90 100644 --- a/include/asm-mips/compat-signal.h +++ b/include/asm-mips/compat-signal.h @@ -5,6 +5,9 @@ #include <linux/compat.h> #include <linux/compiler.h> +#include <asm/signal.h> +#include <asm/siginfo.h> + #include <asm/uaccess.h> static inline int __copy_conv_sigset_to_user(compat_sigset_t __user *d, diff --git a/include/asm-mips/signal.h b/include/asm-mips/signal.h index 8b391a2..7a28989 100644 --- a/include/asm-mips/signal.h +++ b/include/asm-mips/signal.h @@ -137,23 +137,6 @@ typedef struct sigaltstack { #define ptrace_signal_deliver(regs, cookie) do { } while (0) -struct pt_regs; -extern void do_signal(struct pt_regs *regs); -extern void do_signal32(struct pt_regs *regs); - -extern int setup_frame(struct k_sigaction * ka, struct pt_regs *regs, - int signr, sigset_t *set); -extern int setup_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, - int signr, sigset_t *set, siginfo_t *info); - -extern int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, - int signr, sigset_t *set); -extern int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, - int signr, sigset_t *set, siginfo_t *info); - -extern int setup_rt_frame_n32(struct k_sigaction * ka, struct pt_regs *regs, - int signr, sigset_t *set, siginfo_t *info); - #endif /* __KERNEL__ */ #endif /* _ASM_SIGNAL_H */ |
