X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fsignal32.c;h=e315d3f6aa6e57ccf33e018eb32ea647a3d949b1;hb=89de09a9ba9ce293228b1f1aa3c68b5af33a70ce;hp=8ddfbd8d425a9532ea994ae519931a8067ea5af0;hpb=c85b2a5fe200d744a814d23c258460d4fc98a546;p=linux-2.6 diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 8ddfbd8d42..e315d3f6aa 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -7,6 +7,7 @@ * Copyright (C) 1994 - 2000 Ralf Baechle * Copyright (C) 1999, 2000 Silicon Graphics, Inc. */ +#include #include #include #include @@ -21,6 +22,7 @@ #include #include +#include #include #include #include @@ -29,6 +31,7 @@ #include #include #include +#include #define SI_PAD_SIZE32 ((SI_MAX_SIZE/sizeof(int)) - 3) @@ -76,8 +79,10 @@ typedef struct compat_siginfo { /* POSIX.1b timers */ struct { - unsigned int _timer1; - unsigned int _timer2; + timer_t _tid; /* timer id */ + int _overrun; /* overrun count */ + compat_sigval_t _sigval;/* same as below */ + int _sys_private; /* not to be passed to user */ } _timer; /* POSIX.1b signals */ @@ -259,11 +264,12 @@ asmlinkage int sys32_sigaction(int sig, const struct sigaction32 *act, if (act) { old_sigset_t mask; + s32 handler; if (!access_ok(VERIFY_READ, act, sizeof(*act))) return -EFAULT; - err |= __get_user((u32)(u64)new_ka.sa.sa_handler, - &act->sa_handler); + err |= __get_user(handler, &act->sa_handler); + new_ka.sa.sa_handler = (void*)(s64)handler; err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); err |= __get_user(mask, &act->sa_mask.sig[0]); if (err) @@ -331,8 +337,9 @@ asmlinkage int sys32_sigaltstack(nabi_no_regargs struct pt_regs regs) static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 *sc) { + u32 used_math; int err = 0; - __u32 used_math; + s32 treg; /* Always make any pending restarted system calls return -EINTR */ current_thread_info()->restart_block.fn = do_no_restart_syscall; @@ -340,6 +347,15 @@ static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 *sc) err |= __get_user(regs->cp0_epc, &sc->sc_pc); err |= __get_user(regs->hi, &sc->sc_mdhi); err |= __get_user(regs->lo, &sc->sc_mdlo); + if (cpu_has_dsp) { + err |= __get_user(treg, &sc->sc_hi1); mthi1(treg); + err |= __get_user(treg, &sc->sc_lo1); mtlo1(treg); + err |= __get_user(treg, &sc->sc_hi2); mthi2(treg); + err |= __get_user(treg, &sc->sc_lo2); mtlo2(treg); + err |= __get_user(treg, &sc->sc_hi3); mthi3(treg); + err |= __get_user(treg, &sc->sc_lo3); mtlo3(treg); + err |= __get_user(treg, &sc->sc_dsp); wrdsp(treg, DSP_MASK); + } #define restore_gp_reg(i) do { \ err |= __get_user(regs->regs[i], &sc->sc_regs[i]); \ @@ -378,16 +394,30 @@ static int restore_sigcontext32(struct pt_regs *regs, struct sigcontext32 *sc) struct sigframe { u32 sf_ass[4]; /* argument save space for o32 */ +#if ICACHE_REFILLS_WORKAROUND_WAR + u32 sf_pad[2]; +#else u32 sf_code[2]; /* signal trampoline */ +#endif struct sigcontext32 sf_sc; sigset_t sf_mask; +#if ICACHE_REFILLS_WORKAROUND_WAR + u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */ +#endif }; struct rt_sigframe32 { u32 rs_ass[4]; /* argument save space for o32 */ +#if ICACHE_REFILLS_WORKAROUND_WAR + u32 rs_pad[2]; +#else u32 rs_code[2]; /* signal trampoline */ +#endif compat_siginfo_t rs_info; struct ucontext32 rs_uc; +#if ICACHE_REFILLS_WORKAROUND_WAR + u32 rs_code[8] __attribute__((aligned(32))); /* signal trampoline */ +#endif }; int copy_siginfo_to_user32(compat_siginfo_t *to, siginfo_t *from) @@ -411,6 +441,11 @@ int copy_siginfo_to_user32(compat_siginfo_t *to, siginfo_t *from) err |= __copy_to_user(&to->_sifields._pad, &from->_sifields._pad, SI_PAD_SIZE); else { switch (from->si_code >> 16) { + case __SI_TIMER >> 16: + err |= __put_user(from->si_tid, &to->si_tid); + err |= __put_user(from->si_overrun, &to->si_overrun); + err |= __put_user(from->si_int, &to->si_int); + break; case __SI_CHLD >> 16: err |= __put_user(from->si_utime, &to->si_utime); err |= __put_user(from->si_stime, &to->si_stime); @@ -480,6 +515,7 @@ __attribute_used__ noinline static void _sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) { struct rt_sigframe32 *frame; + mm_segment_t old_fs; sigset_t set; stack_t st; s32 sp; @@ -510,7 +546,10 @@ _sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) /* It is more difficult to avoid calling this function than to call it and ignore errors. */ + old_fs = get_fs(); + set_fs (KERNEL_DS); do_sigaltstack(&st, NULL, regs.regs[29]); + set_fs (old_fs); /* * Don't let your children do this ... @@ -550,8 +589,15 @@ static inline int setup_sigcontext32(struct pt_regs *regs, err |= __put_user(regs->hi, &sc->sc_mdhi); err |= __put_user(regs->lo, &sc->sc_mdlo); - err |= __put_user(regs->cp0_cause, &sc->sc_cause); - err |= __put_user(regs->cp0_badvaddr, &sc->sc_badvaddr); + if (cpu_has_dsp) { + err |= __put_user(rddsp(DSP_MASK), &sc->sc_hi1); + err |= __put_user(mfhi1(), &sc->sc_hi1); + err |= __put_user(mflo1(), &sc->sc_lo1); + err |= __put_user(mfhi2(), &sc->sc_hi2); + err |= __put_user(mflo2(), &sc->sc_lo2); + err |= __put_user(mfhi3(), &sc->sc_hi3); + err |= __put_user(mflo3(), &sc->sc_lo3); + } err |= __put_user(!!used_math(), &sc->sc_used_math); @@ -601,8 +647,8 @@ static inline void *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, return (void *)((sp - frame_size) & ALMASK); } -static inline void setup_frame(struct k_sigaction * ka, struct pt_regs *regs, - int signr, sigset_t *set) +int setup_frame_32(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *set) { struct sigframe *frame; int err = 0; @@ -648,15 +694,15 @@ static inline void setup_frame(struct k_sigaction * ka, struct pt_regs *regs, current->comm, current->pid, frame, regs->cp0_epc, frame->sf_code); #endif - return; + return 1; give_sigsegv: force_sigsegv(signr, current); + return 0; } -static inline void setup_rt_frame(struct k_sigaction * ka, - struct pt_regs *regs, int signr, - sigset_t *set, siginfo_t *info) +int setup_rt_frame_32(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *set, siginfo_t *info) { struct rt_sigframe32 *frame; int err = 0; @@ -719,15 +765,18 @@ static inline void setup_rt_frame(struct k_sigaction * ka, current->comm, current->pid, frame, regs->cp0_epc, frame->rs_code); #endif - return; + return 1; give_sigsegv: force_sigsegv(signr, current); + return 0; } -static inline void handle_signal(unsigned long sig, siginfo_t *info, +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: @@ -747,9 +796,9 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info, regs->regs[0] = 0; /* Don't deal with this again. */ if (ka->sa.sa_flags & SA_SIGINFO) - setup_rt_frame(ka, regs, sig, oldset, info); + ret = current->thread.abi->setup_rt_frame(ka, regs, sig, oldset, info); else - setup_frame(ka, regs, sig, oldset); + 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); @@ -757,6 +806,8 @@ static inline void handle_signal(unsigned long sig, siginfo_t *info, sigaddset(¤t->blocked,sig); recalc_sigpending(); spin_unlock_irq(¤t->sighand->siglock); + + return ret; } int do_signal32(sigset_t *oldset, struct pt_regs *regs) @@ -780,10 +831,8 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs) oldset = ¤t->blocked; signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - handle_signal(signr, &info, &ka, oldset, regs); - return 1; - } + if (signr > 0) + return handle_signal(signr, &info, &ka, oldset, regs); no_signal: /* @@ -819,12 +868,13 @@ asmlinkage int sys32_rt_sigaction(int sig, const struct sigaction32 *act, goto out; if (act) { + s32 handler; int err = 0; if (!access_ok(VERIFY_READ, act, sizeof(*act))) return -EFAULT; - err |= __get_user((u32)(u64)new_sa.sa.sa_handler, - &act->sa_handler); + err |= __get_user(handler, &act->sa_handler); + new_sa.sa.sa_handler = (void*)(s64)handler; err |= __get_user(new_sa.sa.sa_flags, &act->sa_flags); err |= get_sigset(&new_sa.sa.sa_mask, &act->sa_mask); if (err) @@ -902,3 +952,30 @@ asmlinkage int sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t *uinfo) set_fs (old_fs); return ret; } + +asmlinkage long +sys32_waitid(int which, compat_pid_t pid, + compat_siginfo_t __user *uinfo, int options, + struct compat_rusage __user *uru) +{ + siginfo_t info; + struct rusage ru; + long ret; + mm_segment_t old_fs = get_fs(); + + info.si_signo = 0; + set_fs (KERNEL_DS); + ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options, + uru ? (struct rusage __user *) &ru : NULL); + set_fs (old_fs); + + if (ret < 0 || info.si_signo == 0) + return ret; + + if (uru && (ret = put_compat_rusage(&ru, uru))) + return ret; + + BUG_ON(info.si_code & __SI_MASK); + info.si_code |= __SI_CHLD; + return copy_siginfo_to_user32(uinfo, &info); +}