diff options
Diffstat (limited to 'arch/mips/kernel/irixsig.c')
| -rw-r--r-- | arch/mips/kernel/irixsig.c | 480 |
1 files changed, 272 insertions, 208 deletions
diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c index 76c5abf71..b2f9d592b 100644 --- a/arch/mips/kernel/irixsig.c +++ b/arch/mips/kernel/irixsig.c @@ -1,4 +1,4 @@ -/* $Id: irixsig.c,v 1.5 1997/12/01 17:57:27 ralf Exp $ +/* $Id: irixsig.c,v 1.8 1997/12/15 17:38:34 ralf Exp $ * irixsig.c: WHEEE, IRIX signals! YOW, am I compatable or what?!?! * * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com) @@ -15,12 +15,19 @@ #include <asm/ptrace.h> #include <asm/uaccess.h> +asmlinkage int sys_wait4(pid_t pid, unsigned long *stat_addr, + int options, unsigned long *ru); + #undef DEBUG_SIG #define _S(nr) (1<<((nr)-1)) #define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP))) +typedef struct { + unsigned long sig[4]; +} irix_sigset_t; + struct sigctx_irix5 { u32 rmask, cp0_status; u64 pc; @@ -29,7 +36,7 @@ struct sigctx_irix5 { u32 usedfp, fpcsr, fpeir, sstk_flags; u64 hi, lo; u64 cp0_cause, cp0_badvaddr, _unused0; - u32 sigset[4]; + irix_sigset_t sigset; u64 weird_fpu_thing; u64 _unused1[31]; }; @@ -63,14 +70,15 @@ static inline void dump_irix5_sigctx(struct sigctx_irix5 *c) (unsigned long) c->hi, (unsigned long) c->lo, (unsigned long) c->cp0_cause, (unsigned long) c->cp0_badvaddr); printk("misc: sigset<0>[%08lx] sigset<1>[%08lx] sigset<2>[%08lx] " - "sigset<3>[%08lx]\n", (unsigned long) c->sigset[0], - (unsigned long) c->sigset[1], (unsigned long) c->sigset[2], - (unsigned long) c->sigset[3]); + "sigset<3>[%08lx]\n", (unsigned long) c->sigset.sig[0], + (unsigned long) c->sigset.sig[1], + (unsigned long) c->sigset.sig[2], + (unsigned long) c->sigset.sig[3]); } #endif -static void setup_irix_frame(struct sigaction * sa, struct pt_regs *regs, - int signr, unsigned long oldmask) +static void setup_irix_frame(struct k_sigaction *ka, struct pt_regs *regs, + int signr, sigset_t *oldmask) { unsigned long sp; struct sigctx_irix5 *ctx; @@ -98,10 +106,7 @@ static void setup_irix_frame(struct sigaction * sa, struct pt_regs *regs, __put_user(0, &ctx->sstk_flags); /* XXX sigstack unimp... todo... */ - __put_user(0, &ctx->sigset[1]); - __put_user(0, &ctx->sigset[2]); - __put_user(0, &ctx->sigset[3]); - __put_user(oldmask, &ctx->sigset[0]); + __copy_to_user(&ctx->sigset, oldmask, sizeof(irix_sigset_t)); #ifdef DEBUG_SIG dump_irix5_sigctx(ctx); @@ -110,7 +115,7 @@ static void setup_irix_frame(struct sigaction * sa, struct pt_regs *regs, regs->regs[5] = 0; /* XXX sigcode XXX */ regs->regs[4] = (unsigned long) signr; regs->regs[6] = regs->regs[29] = sp; - regs->regs[7] = (unsigned long) sa->sa_handler; + regs->regs[7] = (unsigned long) ka->sa.sa_handler; regs->regs[25] = regs->cp0_epc = current->tss.irix_trampoline; return; @@ -120,52 +125,126 @@ segv_and_exit: unlock_kernel(); } -asmlinkage int sys_wait4(pid_t pid, unsigned long *stat_addr, - int options, unsigned long *ru); +static void inline +setup_irix_rt_frame(struct k_sigaction * ka, struct pt_regs *regs, + int signr, sigset_t *oldmask, siginfo_t *info) +{ + lock_kernel(); + printk("Aiee: setup_tr_frame wants to be written"); + do_exit(SIGSEGV); + unlock_kernel(); +} + +static inline void handle_signal(unsigned long sig, struct k_sigaction *ka, + siginfo_t *info, sigset_t *oldset, struct pt_regs * regs) +{ + if (ka->sa.sa_flags & SA_SIGINFO) + setup_irix_rt_frame(ka, regs, sig, oldset, info); + else + setup_irix_frame(ka, regs, sig, oldset); + + if (ka->sa.sa_flags & SA_ONESHOT) + ka->sa.sa_handler = SIG_DFL; + if (!(ka->sa.sa_flags & SA_NODEFER)) { + spin_lock_irq(¤t->sigmask_lock); + sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); + sigaddset(¤t->blocked,sig); + recalc_sigpending(current); + spin_unlock_irq(¤t->sigmask_lock); + } +} + +static inline void syscall_restart(unsigned long r0, unsigned long or2, + unsigned long or7, struct pt_regs *regs, + struct sigaction *sa) +{ + switch(r0) { + case ERESTARTNOHAND: + no_system_call_restart: + regs->regs[0] = regs->regs[2] = EINTR; + break; + case ERESTARTSYS: + if(!(sa->sa_flags & SA_RESTART)) + goto no_system_call_restart; + /* fallthrough */ + case ERESTARTNOINTR: + regs->regs[0] = regs->regs[2] = or2; + regs->regs[7] = or7; + regs->cp0_epc -= 8; + } +} -asmlinkage int do_irix_signal(unsigned long oldmask, struct pt_regs * regs) +asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs) { - unsigned long mask = ~current->blocked; - unsigned long handler_signal = 0; + unsigned long r0 = regs->regs[0]; + unsigned long r7 = regs->orig_reg7; + struct k_sigaction *ka; unsigned long signr; - struct sigaction * sa; + sigset_t _oldset; + siginfo_t info; + + if (!oldset) + oldset = ¤t->blocked; + + for (;;) { + unsigned long signr; + + spin_lock_irq(¤t->sigmask_lock); + signr = dequeue_signal(¤t->blocked, &info); + spin_unlock_irq(¤t->sigmask_lock); + + if (!signr) + break; -#ifdef DEBUG_SIG - printk("[%s:%d] Delivering IRIX signal oldmask=%08lx\n", - current->comm, current->pid, oldmask); -#endif - while ((signr = current->signal & mask)) { - signr = ffz(~signr); - clear_bit(signr, ¤t->signal); - sa = current->sig->action + signr; - signr++; if ((current->flags & PF_PTRACED) && signr != SIGKILL) { + /* Let the debugger run. */ current->exit_code = signr; current->state = TASK_STOPPED; notify_parent(current, SIGCHLD); schedule(); + + /* We're back. Did the debugger cancel the sig? */ if (!(signr = current->exit_code)) continue; current->exit_code = 0; + + /* The debugger continued. Ignore SIGSTOP. */ if (signr == SIGSTOP) continue; - if (_S(signr) & current->blocked) { - current->signal |= _S(signr); + + /* Update the siginfo structure. Is this good? */ + if (signr != info.si_signo) { + info.si_signo = signr; + info.si_errno = 0; + info.si_code = SI_USER; + info.si_pid = current->p_pptr->pid; + info.si_uid = current->p_pptr->uid; + } + + /* If the (new) signal is now blocked, requeue it. */ + if (sigismember(¤t->blocked, signr)) { + send_sig_info(signr, &info, current); continue; } - sa = current->sig->action + signr - 1; } - if (sa->sa_handler == SIG_IGN) { + + ka = ¤t->sig->action[signr-1]; + if (ka->sa.sa_handler == SIG_IGN) { if (signr != SIGCHLD) continue; - /* check for SIGCHLD: it's special */ - while (sys_wait4(-1,NULL,WNOHANG, NULL) > 0) + /* Check for SIGCHLD: it's special. */ + while (sys_wait4(-1, NULL, WNOHANG, NULL) > 0) /* nothing */; continue; } - if (sa->sa_handler == SIG_DFL) { + + if (ka->sa.sa_handler == SIG_DFL) { + int exit_code = signr; + + /* Init gets no signals it doesn't want. */ if (current->pid == 1) continue; + switch (signr) { case SIGCONT: case SIGCHLD: case SIGWINCH: continue; @@ -173,78 +252,56 @@ asmlinkage int do_irix_signal(unsigned long oldmask, struct pt_regs * regs) case SIGTSTP: case SIGTTIN: case SIGTTOU: if (is_orphaned_pgrp(current->pgrp)) continue; + /* FALLTHRU */ + case SIGSTOP: - if (current->flags & PF_PTRACED) - continue; current->state = TASK_STOPPED; current->exit_code = signr; - if (!(current->p_pptr->sig->action[SIGCHLD-1].sa_flags & - SA_NOCLDSTOP)) + if (!(current->p_pptr->sig->action[SIGCHLD-1].sa.sa_flags & SA_NOCLDSTOP)) notify_parent(current, SIGCHLD); schedule(); continue; case SIGQUIT: case SIGILL: case SIGTRAP: - case SIGIOT: case SIGFPE: case SIGSEGV: case SIGBUS: + case SIGABRT: case SIGFPE: case SIGSEGV: lock_kernel(); - if (current->binfmt && current->binfmt->core_dump) { - if (current->binfmt->core_dump(signr, regs)) - signr |= 0x80; - } + if (current->binfmt + && current->binfmt->core_dump + && current->binfmt->core_dump(signr, regs)) + exit_code |= 0x80; unlock_kernel(); - /* fall through */ + /* FALLTHRU */ + default: - current->signal |= _S(signr & 0x7f); + lock_kernel(); + sigaddset(¤t->signal, signr); current->flags |= PF_SIGNALED; - lock_kernel(); /* 8-( */ - do_exit(signr); - unlock_kernel(); - } - } - /* - * OK, we're invoking a handler - */ - if (regs->orig_reg2 >= 0) { - if (regs->regs[2] == ERESTARTNOHAND) { - regs->regs[2] = EINTR; - } else if((regs->regs[2] == ERESTARTSYS && - !(sa->sa_flags & SA_RESTART))) { - regs->regs[2] = regs->orig_reg2; - regs->cp0_epc -= 8; + do_exit(exit_code); + /* NOTREACHED */ } } - handler_signal |= 1 << (signr-1); - mask &= ~sa->sa_mask; + + if (r0) + syscall_restart(r0, regs->orig_reg2, r7, regs, &ka->sa); + /* Whee! Actually deliver the signal. */ + handle_signal(signr, ka, &info, oldset, regs); + return 1; } + /* * 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->orig_reg2 >= 0 && + if (r0 && (regs->regs[2] == ERESTARTNOHAND || regs->regs[2] == ERESTARTSYS || regs->regs[2] == ERESTARTNOINTR)) { - regs->regs[2] = regs->orig_reg2; + regs->regs[0] = regs->regs[2] = regs->orig_reg2; + regs->regs[7] = r7; regs->cp0_epc -= 8; } - if (!handler_signal) /* no handler will be called - return 0 */ - return 0; - signr = 1; - sa = current->sig->action; - for (mask = 1 ; mask ; sa++,signr++,mask += mask) { - if (mask > handler_signal) - break; - if (!(mask & handler_signal)) - continue; - setup_irix_frame(sa, regs, signr, oldmask); - if (sa->sa_flags & SA_ONESHOT) - sa->sa_handler = NULL; - current->blocked |= sa->sa_mask; - oldmask |= sa->sa_mask; - } - - return 1; + return 0; } asmlinkage unsigned long irix_sigreturn(struct pt_regs *regs) @@ -253,6 +310,7 @@ asmlinkage unsigned long irix_sigreturn(struct pt_regs *regs) unsigned long umask, mask; u64 *fregs, res; int sig, i, base = 0; + sigset_t blocked; if(regs->regs[2] == 1000) base = 1; @@ -291,10 +349,18 @@ asmlinkage unsigned long irix_sigreturn(struct pt_regs *regs) /* XXX do sigstack crapola here... XXX */ + if (__copy_from_user(&blocked, &context->sigset, sizeof(blocked))) + goto badframe; + + sigdelsetmask(&blocked, ~_BLOCKABLE); + spin_lock_irq(¤t->sigmask_lock); + current->blocked = blocked; + recalc_sigpending(current); + spin_unlock_irq(¤t->sigmask_lock); + regs->orig_reg2 = -1; - __get_user(current->blocked, &context->sigset[0]); - current->blocked &= _BLOCKABLE; __get_user(res, &context->regs[2]); + return res; badframe: @@ -321,27 +387,12 @@ static inline void dump_sigact_irix5(struct sigact_irix5 *p) } #endif -static inline void check_pending(int signum) +asmlinkage int +irix_sigaction(int sig, const struct sigaction *act, + struct sigaction *oact, unsigned long trampoline) { - struct sigaction *p; - - p = signum - 1 + current->sig->action; - spin_lock(¤t->sigmask_lock); - if (p->sa_handler == SIG_IGN) { - current->signal &= ~_S(signum); - } else if (p->sa_handler == SIG_DFL) { - if (signum != SIGCONT && signum != SIGCHLD && signum != SIGWINCH) - return; - current->signal &= ~_S(signum); - } - spin_unlock(¤t->sigmask_lock); -} - -asmlinkage int irix_sigaction(int sig, struct sigact_irix5 *new, - struct sigact_irix5 *old, unsigned long trampoline) -{ - struct sigaction new_sa, *p; - int res; + struct k_sigaction new_ka, old_ka; + int ret; #ifdef DEBUG_SIG printk(" (%d,%s,%s,%08lx) ", sig, (!new ? "0" : "NEW"), @@ -350,110 +401,103 @@ asmlinkage int irix_sigaction(int sig, struct sigact_irix5 *new, dump_sigact_irix5(new); printk(" "); } #endif - if(sig < 1 || sig > 32) { - return -EINVAL; - } - p = sig - 1 + current->sig->action; + if (act) { + sigset_t mask; + if (verify_area(VERIFY_READ, act, sizeof(*act)) || + __get_user(new_ka.sa.sa_handler, &act->sa_handler) || + __get_user(new_ka.sa.sa_flags, &act->sa_flags)) + return -EFAULT; - if(new) { - res = verify_area(VERIFY_READ, new, sizeof(*new)); - if(res) - return res; - if(sig == SIGKILL || sig == SIGSTOP) { - return -EINVAL; - } - __get_user(new_sa.sa_flags, &new->flags); - __get_user(new_sa.sa_handler, &(__sighandler_t) new->handler); - __get_user(new_sa.sa_mask, &new->sigset[0]); - - if(new_sa.sa_handler != SIG_DFL && new_sa.sa_handler != SIG_IGN) { - res = verify_area(VERIFY_READ, new_sa.sa_handler, 1); - if(res) - return res; - } + __copy_from_user(&mask, &act->sa_mask, sizeof(sigset_t)); + new_ka.ka_restorer = NULL; } - /* Hmmm... methinks IRIX libc always passes a valid trampoline + + /* + * Hmmm... methinks IRIX libc always passes a valid trampoline * value for all invocations of sigaction. Will have to * investigate. POSIX POSIX, die die die... */ current->tss.irix_trampoline = trampoline; - if(old) { - int res = verify_area(VERIFY_WRITE, old, sizeof(*old)); - if(res) - return res; - __put_user(p->sa_flags, &old->flags); - __put_user(p->sa_handler, &old->handler); - __put_user(p->sa_mask, &old->sigset[0]); - __put_user(0, &old->sigset[1]); - __put_user(0, &old->sigset[2]); - __put_user(0, &old->sigset[3]); - __put_user(0, &old->_unused0[0]); - __put_user(0, &old->_unused0[1]); - } - if(new) { - spin_lock_irq(¤t->sig->siglock); - *p = new_sa; - check_pending(sig); - spin_unlock_irq(¤t->sig->siglock); + +/* XXX Implement SIG_SETMASK32 for IRIX compatibility */ + ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); + + if (!ret && oact) { + if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) || + __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || + __put_user(old_ka.sa.sa_flags, &oact->sa_flags)) + return -EFAULT; + __copy_to_user(&old_ka.sa.sa_mask, &oact->sa_mask, + sizeof(sigset_t)); } - return 0; + return ret; } -asmlinkage int irix_sigpending(unsigned long *set) +asmlinkage int irix_sigpending(irix_sigset_t *set) { - int res; - lock_kernel(); - res = verify_area(VERIFY_WRITE, set, (sizeof(unsigned long) * 4)); - if(!res) { - /* fill in "set" with signals pending but blocked. */ - spin_lock_irq(¤t->sigmask_lock); - __put_user(0, &set[1]); - __put_user(0, &set[2]); - __put_user(0, &set[3]); - __put_user((current->blocked & current->signal), &set[0]); - spin_unlock_irq(¤t->sigmask_lock); - } - return res; + if (verify_area(VERIFY_WRITE, set, sizeof(*set)) < 0) + return -EFAULT; + + /* fill in "set" with signals pending but blocked. */ + spin_lock_irq(¤t->sigmask_lock); + __put_user(current->blocked.sig[0] & current->signal.sig[0], + &set->sig[0]); + __put_user(current->blocked.sig[1] & current->signal.sig[1], + &set->sig[1]); + __put_user(current->blocked.sig[2] & current->signal.sig[2], + &set->sig[2]); + __put_user(current->blocked.sig[3] & current->signal.sig[3], + &set->sig[3]); + spin_unlock_irq(¤t->sigmask_lock); + + return 0; } -asmlinkage int irix_sigprocmask(int how, unsigned long *new, unsigned long *old) +asmlinkage int irix_sigprocmask(int how, irix_sigset_t *new, irix_sigset_t *old) { - unsigned long bits, oldbits = current->blocked; + sigset_t oldbits, newbits; int error; + if(new) { - error = verify_area(VERIFY_READ, new, (sizeof(unsigned long) * 4)); + error = verify_area(VERIFY_READ, new, sizeof(*new)); if(error) return error; - bits = new[0] & _BLOCKABLE; + __copy_from_user(&newbits, new, sizeof(unsigned long)*4); + sigdelsetmask(&newbits, ~_BLOCKABLE); + + spin_lock_irq(¤t->sigmask_lock); + oldbits = current->blocked; + switch(how) { case 1: - current->blocked |= bits; + sigorsets(&newbits, &oldbits, &newbits); break; case 2: - current->blocked &= ~bits; + sigandsets(&newbits, &oldbits, &newbits); break; case 3: + break; + case 256: - current->blocked = bits; + siginitset(&newbits, newbits.sig[0]); break; default: return -EINVAL; } + recalc_sigpending(current); + spin_unlock_irq(¤t->sigmask_lock); } if(old) { - error = verify_area(VERIFY_WRITE, old, (sizeof(unsigned long) * 4)); + error = verify_area(VERIFY_WRITE, old, sizeof(*old)); if(error) return error; - __put_user(0, &old[1]); - __put_user(0, &old[2]); - __put_user(0, &old[3]); - __put_user(oldbits, &old[0]); + __copy_to_user(old, ¤t->blocked, sizeof(unsigned long)*4); } return 0; @@ -461,26 +505,25 @@ asmlinkage int irix_sigprocmask(int how, unsigned long *new, unsigned long *old) asmlinkage int irix_sigsuspend(struct pt_regs *regs) { - unsigned int mask; - unsigned long *uset; - int base = 0, error; + sigset_t *uset, saveset, newset; - if(regs->regs[2] == 1000) - base = 1; - - uset = (unsigned long *) regs->regs[base + 4]; - if(verify_area(VERIFY_READ, uset, (sizeof(unsigned long) * 4))) + uset = (sigset_t *) regs->regs[4]; + if (copy_from_user(&newset, uset, sizeof(sigset_t))) return -EFAULT; - mask = current->blocked; + sigdelsetmask(&newset, ~_BLOCKABLE); - current->blocked = uset[0] & _BLOCKABLE; - while(1) { + spin_lock_irq(¤t->sigmask_lock); + saveset = current->blocked; + current->blocked = newset; + spin_unlock_irq(¤t->sigmask_lock); + + regs->regs[2] = -EINTR; + while (1) { current->state = TASK_INTERRUPTIBLE; schedule(); - if(do_irix_signal(mask, regs)) + if (do_irix_signal(&saveset, regs)) return -EINTR; } - return error; } /* hate hate hate... */ @@ -524,8 +567,9 @@ static inline unsigned long timespectojiffies(struct timespec *value) asmlinkage int irix_sigpoll_sys(unsigned long *set, struct irix5_siginfo *info, struct timespec *tp) { - unsigned long mask, kset, expire = 0; - int sig, error, timeo = 0; + unsigned long expire = 0; + sigset_t kset; + int i, sig, error, timeo = 0; lock_kernel(); #ifdef DEBUG_SIG @@ -537,11 +581,15 @@ asmlinkage int irix_sigpoll_sys(unsigned long *set, struct irix5_siginfo *info, if(!set) return -EINVAL; - error = get_user(kset, &set[0]); - if(error) + error = verify_area(VERIFY_READ, set, sizeof(kset)); + if (error) + goto out; + + __copy_from_user(&kset, set, sizeof(set)); + if (error) goto out; - if(info && clear_user(info, sizeof(*info))) { + if (info && clear_user(info, sizeof(*info))) { error = -EFAULT; goto out; } @@ -559,21 +607,32 @@ asmlinkage int irix_sigpoll_sys(unsigned long *set, struct irix5_siginfo *info, } while(1) { + long tmp = 0; + current->state = TASK_INTERRUPTIBLE; schedule(); - if(current->signal & kset) break; - if(tp && expire <= jiffies) { + + for (i=0; i<=4; i++) + tmp |= (current->signal.sig[i] & kset.sig[i]); + + if (tmp) + break; + if (tp && expire <= jiffies) { timeo = 1; break; } - if(signal_pending(current)) return -EINTR; + if (signal_pending(current)) + return -EINTR; } + if (timeo) + return -EAGAIN; - if(timeo) return -EAGAIN; - for(sig = 1, mask = 2; mask; mask <<= 1, sig++) { - if(!(mask & kset)) continue; - if(mask & current->signal) { + for(sig = 1; i <= 65 /* IRIX_NSIG */; sig++) { + if (sigismember (&kset, sig)) + continue; + if (sigismember (¤t->signal, sig)) { /* XXX need more than this... */ - if(info) info->sig = sig; + if (info) + info->sig = sig; error = 0; goto out; } @@ -724,6 +783,7 @@ asmlinkage int irix_getcontext(struct pt_regs *regs) { int error, i, base = 0; struct irix5_context *ctx; + unsigned long flags; lock_kernel(); if(regs->regs[2] == 1000) @@ -738,28 +798,32 @@ asmlinkage int irix_getcontext(struct pt_regs *regs) error = verify_area(VERIFY_WRITE, ctx, sizeof(*ctx)); if(error) goto out; - ctx->flags = 0x0f; - ctx->link = current->tss.irix_oldctx; - ctx->sigmask[1] = ctx->sigmask[2] = ctx->sigmask[4] = 0; - ctx->sigmask[0] = current->blocked; + __put_user(current->tss.irix_oldctx, &ctx->link); + + __copy_to_user(&ctx->sigmask, ¤t->blocked, sizeof(irix_sigset_t)); /* XXX Do sigstack stuff someday... */ - ctx->stack.sp = ctx->stack.size = ctx->stack.flags = 0; + __put_user(0, &ctx->stack.sp); + __put_user(0, &ctx->stack.size); + __put_user(0, &ctx->stack.flags); - ctx->weird_graphics_thing = 0; - ctx->regs[0] = 0; + __put_user(0, &ctx->weird_graphics_thing); + __put_user(0, &ctx->regs[0]); for(i = 1; i < 32; i++) - ctx->regs[i] = regs->regs[i]; - ctx->regs[32] = regs->lo; - ctx->regs[33] = regs->hi; - ctx->regs[34] = regs->cp0_cause; - ctx->regs[35] = regs->cp0_epc; + __put_user(regs->regs[i], &ctx->regs[i]); + __put_user(regs->lo, &ctx->regs[32]); + __put_user(regs->hi, &ctx->regs[33]); + __put_user(regs->cp0_cause, &ctx->regs[34]); + __put_user(regs->cp0_epc, &ctx->regs[35]); + + flags = 0x0f; if(!current->used_math) { - ctx->flags &= ~(0x08); + flags &= ~(0x08); } else { /* XXX wheee... */ printk("Wheee, no code for saving IRIX FPU context yet.\n"); } + __put_user(flags, &ctx->flags); error = 0; out: |