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Diffstat (limited to 'arch/mips/kernel/irixsig.c')
-rw-r--r--arch/mips/kernel/irixsig.c888
1 files changed, 0 insertions, 888 deletions
diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c
deleted file mode 100644
index 0215c805a592..000000000000
--- a/arch/mips/kernel/irixsig.c
+++ /dev/null
@@ -1,888 +0,0 @@
-/*
- * irixsig.c: WHEEE, IRIX signals! YOW, am I compatible or what?!?!
- *
- * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
- * Copyright (C) 1997 - 2000 Ralf Baechle (ralf@gnu.org)
- * Copyright (C) 2000 Silicon Graphics, Inc.
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/smp.h>
-#include <linux/time.h>
-#include <linux/ptrace.h>
-#include <linux/resource.h>
-
-#include <asm/ptrace.h>
-#include <asm/uaccess.h>
-#include <asm/unistd.h>
-
-#undef DEBUG_SIG
-
-#define _S(nr) (1<<((nr)-1))
-
-#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
-
-#define _IRIX_NSIG 128
-#define _IRIX_NSIG_BPW BITS_PER_LONG
-#define _IRIX_NSIG_WORDS (_IRIX_NSIG / _IRIX_NSIG_BPW)
-
-typedef struct {
- unsigned long sig[_IRIX_NSIG_WORDS];
-} irix_sigset_t;
-
-struct sigctx_irix5 {
- u32 rmask, cp0_status;
- u64 pc;
- u64 regs[32];
- u64 fpregs[32];
- u32 usedfp, fpcsr, fpeir, sstk_flags;
- u64 hi, lo;
- u64 cp0_cause, cp0_badvaddr, _unused0;
- irix_sigset_t sigset;
- u64 weird_fpu_thing;
- u64 _unused1[31];
-};
-
-#ifdef DEBUG_SIG
-/* Debugging */
-static inline void dump_irix5_sigctx(struct sigctx_irix5 *c)
-{
- int i;
-
- printk("misc: rmask[%08lx] status[%08lx] pc[%08lx]\n",
- (unsigned long) c->rmask,
- (unsigned long) c->cp0_status,
- (unsigned long) c->pc);
- printk("regs: ");
- for(i = 0; i < 16; i++)
- printk("[%d]<%08lx> ", i, (unsigned long) c->regs[i]);
- printk("\nregs: ");
- for(i = 16; i < 32; i++)
- printk("[%d]<%08lx> ", i, (unsigned long) c->regs[i]);
- printk("\nfpregs: ");
- for(i = 0; i < 16; i++)
- printk("[%d]<%08lx> ", i, (unsigned long) c->fpregs[i]);
- printk("\nfpregs: ");
- for(i = 16; i < 32; i++)
- printk("[%d]<%08lx> ", i, (unsigned long) c->fpregs[i]);
- printk("misc: usedfp[%d] fpcsr[%08lx] fpeir[%08lx] stk_flgs[%08lx]\n",
- (int) c->usedfp, (unsigned long) c->fpcsr,
- (unsigned long) c->fpeir, (unsigned long) c->sstk_flags);
- printk("misc: hi[%08lx] lo[%08lx] cause[%08lx] badvaddr[%08lx]\n",
- (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.sig[0],
- (unsigned long) c->sigset.sig[1],
- (unsigned long) c->sigset.sig[2],
- (unsigned long) c->sigset.sig[3]);
-}
-#endif
-
-static int setup_irix_frame(struct k_sigaction *ka, struct pt_regs *regs,
- int signr, sigset_t *oldmask)
-{
- struct sigctx_irix5 __user *ctx;
- unsigned long sp;
- int error, i;
-
- sp = regs->regs[29];
- sp -= sizeof(struct sigctx_irix5);
- sp &= ~(0xf);
- ctx = (struct sigctx_irix5 __user *) sp;
- if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
- goto segv_and_exit;
-
- error = __put_user(0, &ctx->weird_fpu_thing);
- error |= __put_user(~(0x00000001), &ctx->rmask);
- error |= __put_user(0, &ctx->regs[0]);
- for(i = 1; i < 32; i++)
- error |= __put_user((u64) regs->regs[i], &ctx->regs[i]);
-
- error |= __put_user((u64) regs->hi, &ctx->hi);
- error |= __put_user((u64) regs->lo, &ctx->lo);
- error |= __put_user((u64) regs->cp0_epc, &ctx->pc);
- error |= __put_user(!!used_math(), &ctx->usedfp);
- error |= __put_user((u64) regs->cp0_cause, &ctx->cp0_cause);
- error |= __put_user((u64) regs->cp0_badvaddr, &ctx->cp0_badvaddr);
-
- error |= __put_user(0, &ctx->sstk_flags); /* XXX sigstack unimp... todo... */
-
- error |= __copy_to_user(&ctx->sigset, oldmask, sizeof(irix_sigset_t)) ? -EFAULT : 0;
-
- if (error)
- goto segv_and_exit;
-
-#ifdef DEBUG_SIG
- dump_irix5_sigctx(ctx);
-#endif
-
- regs->regs[4] = (unsigned long) signr;
- regs->regs[5] = 0; /* XXX sigcode XXX */
- regs->regs[6] = regs->regs[29] = sp;
- regs->regs[7] = (unsigned long) ka->sa.sa_handler;
- regs->regs[25] = regs->cp0_epc = (unsigned long) ka->sa_restorer;
-
- return 1;
-
-segv_and_exit:
- force_sigsegv(signr, current);
- return 0;
-}
-
-static int inline
-setup_irix_rt_frame(struct k_sigaction * ka, struct pt_regs *regs,
- int signr, sigset_t *oldmask, siginfo_t *info)
-{
- printk("Aiee: setup_tr_frame wants to be written");
- do_exit(SIGSEGV);
-}
-
-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 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->cp0_epc -= 8;
- }
-
- regs->regs[0] = 0; /* Don't deal with this again. */
-
- if (ka->sa.sa_flags & SA_SIGINFO)
- ret = setup_irix_rt_frame(ka, regs, sig, oldset, info);
- else
- ret = setup_irix_frame(ka, regs, sig, oldset);
-
- spin_lock_irq(&current->sighand->siglock);
- sigorsets(&current->blocked, &current->blocked, &ka->sa.sa_mask);
- if (!(ka->sa.sa_flags & SA_NODEFER))
- sigaddset(&current->blocked, sig);
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- return ret;
-}
-
-void do_irix_signal(struct pt_regs *regs)
-{
- struct k_sigaction ka;
- siginfo_t info;
- int signr;
- sigset_t *oldset;
-
- /*
- * 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 = &current->saved_sigmask;
- else
- oldset = &current->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->cp0_epc -= 8;
- }
- if (regs->regs[2] == ERESTART_RESTARTBLOCK) {
- regs->regs[2] = __NR_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, &current->saved_sigmask, NULL);
- }
-}
-
-asmlinkage void
-irix_sigreturn(struct pt_regs *regs)
-{
- struct sigctx_irix5 __user *context, *magic;
- unsigned long umask, mask;
- u64 *fregs;
- u32 usedfp;
- int error, sig, i, base = 0;
- sigset_t blocked;
-
- /* Always make any pending restarted system calls return -EINTR */
- current_thread_info()->restart_block.fn = do_no_restart_syscall;
-
- if (regs->regs[2] == 1000)
- base = 1;
-
- context = (struct sigctx_irix5 __user *) regs->regs[base + 4];
- magic = (struct sigctx_irix5 __user *) regs->regs[base + 5];
- sig = (int) regs->regs[base + 6];
-#ifdef DEBUG_SIG
- printk("[%s:%d] IRIX sigreturn(scp[%p],ucp[%p],sig[%d])\n",
- current->comm, current->pid, context, magic, sig);
-#endif
- if (!context)
- context = magic;
- if (!access_ok(VERIFY_READ, context, sizeof(struct sigctx_irix5)))
- goto badframe;
-
-#ifdef DEBUG_SIG
- dump_irix5_sigctx(context);
-#endif
-
- error = __get_user(regs->cp0_epc, &context->pc);
- error |= __get_user(umask, &context->rmask);
-
- mask = 2;
- for (i = 1; i < 32; i++, mask <<= 1) {
- if (umask & mask)
- error |= __get_user(regs->regs[i], &context->regs[i]);
- }
- error |= __get_user(regs->hi, &context->hi);
- error |= __get_user(regs->lo, &context->lo);
-
- error |= __get_user(usedfp, &context->usedfp);
- if ((umask & 1) && usedfp) {
- fregs = (u64 *) &current->thread.fpu;
-
- for(i = 0; i < 32; i++)
- error |= __get_user(fregs[i], &context->fpregs[i]);
- error |= __get_user(current->thread.fpu.fcr31, &context->fpcsr);
- }
-
- /* XXX do sigstack crapola here... XXX */
-
- error |= __copy_from_user(&blocked, &context->sigset, sizeof(blocked)) ? -EFAULT : 0;
-
- if (error)
- goto badframe;
-
- sigdelsetmask(&blocked, ~_BLOCKABLE);
- spin_lock_irq(&current->sighand->siglock);
- current->blocked = blocked;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- /*
- * Don't let your children do this ...
- */
- __asm__ __volatile__(
- "move\t$29,%0\n\t"
- "j\tsyscall_exit"
- :/* no outputs */
- :"r" (&regs));
- /* Unreached */
-
-badframe:
- force_sig(SIGSEGV, current);
-}
-
-struct sigact_irix5 {
- int flags;
- void (*handler)(int);
- u32 sigset[4];
- int _unused0[2];
-};
-
-#define SIG_SETMASK32 256 /* Goodie from SGI for BSD compatibility:
- set only the low 32 bit of the sigset. */
-
-#ifdef DEBUG_SIG
-static inline void dump_sigact_irix5(struct sigact_irix5 *p)
-{
- printk("<f[%d] hndlr[%08lx] msk[%08lx]>", p->flags,
- (unsigned long) p->handler,
- (unsigned long) p->sigset[0]);
-}
-#endif
-
-asmlinkage int
-irix_sigaction(int sig, const struct sigaction __user *act,
- struct sigaction __user *oact, void __user *trampoline)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
-#ifdef DEBUG_SIG
- printk(" (%d,%s,%s,%08lx) ", sig, (!new ? "0" : "NEW"),
- (!old ? "0" : "OLD"), trampoline);
- if(new) {
- dump_sigact_irix5(new); printk(" ");
- }
-#endif
- if (act) {
- sigset_t mask;
- int err;
-
- if (!access_ok(VERIFY_READ, act, sizeof(*act)))
- return -EFAULT;
- err = __get_user(new_ka.sa.sa_handler, &act->sa_handler);
- err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
-
- err |= __copy_from_user(&mask, &act->sa_mask, sizeof(sigset_t)) ? -EFAULT : 0;
- if (err)
- return err;
-
- /*
- * Hmmm... methinks IRIX libc always passes a valid trampoline
- * value for all invocations of sigaction. Will have to
- * investigate. POSIX POSIX, die die die...
- */
- new_ka.sa_restorer = trampoline;
- }
-
-/* XXX Implement SIG_SETMASK32 for IRIX compatibility */
- ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
-
- if (!ret && oact) {
- int err;
-
- if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
- return -EFAULT;
-
- err = __put_user(old_ka.sa.sa_handler, &oact->sa_handler);
- err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- err |= __copy_to_user(&oact->sa_mask, &old_ka.sa.sa_mask,
- sizeof(sigset_t)) ? -EFAULT : 0;
- if (err)
- return -EFAULT;
- }
-
- return ret;
-}
-
-asmlinkage int irix_sigpending(irix_sigset_t __user *set)
-{
- return do_sigpending(set, sizeof(*set));
-}
-
-asmlinkage int irix_sigprocmask(int how, irix_sigset_t __user *new,
- irix_sigset_t __user *old)
-{
- sigset_t oldbits, newbits;
-
- if (new) {
- if (!access_ok(VERIFY_READ, new, sizeof(*new)))
- return -EFAULT;
- if (__copy_from_user(&newbits, new, sizeof(unsigned long)*4))
- return -EFAULT;
- sigdelsetmask(&newbits, ~_BLOCKABLE);
-
- spin_lock_irq(&current->sighand->siglock);
- oldbits = current->blocked;
-
- switch(how) {
- case 1:
- sigorsets(&newbits, &oldbits, &newbits);
- break;
-
- case 2:
- sigandsets(&newbits, &oldbits, &newbits);
- break;
-
- case 3:
- break;
-
- case 256:
- siginitset(&newbits, newbits.sig[0]);
- break;
-
- default:
- spin_unlock_irq(&current->sighand->siglock);
- return -EINVAL;
- }
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
- }
- if (old)
- return copy_to_user(old, &current->blocked,
- sizeof(unsigned long)*4) ? -EFAULT : 0;
-
- return 0;
-}
-
-asmlinkage int irix_sigsuspend(struct pt_regs *regs)
-{
- sigset_t newset;
- sigset_t __user *uset;
-
- uset = (sigset_t __user *) regs->regs[4];
- if (copy_from_user(&newset, uset, sizeof(sigset_t)))
- return -EFAULT;
- sigdelsetmask(&newset, ~_BLOCKABLE);
-
- spin_lock_irq(&current->sighand->siglock);
- current->saved_sigmask = current->blocked;
- current->blocked = newset;
- recalc_sigpending();
- spin_unlock_irq(&current->sighand->siglock);
-
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- set_thread_flag(TIF_RESTORE_SIGMASK);
- return -ERESTARTNOHAND;
-}
-
-/* hate hate hate... */
-struct irix5_siginfo {
- int sig, code, error;
- union {
- char unused[128 - (3 * 4)]; /* Safety net. */
- struct {
- int pid;
- union {
- int uid;
- struct {
- int utime, status, stime;
- } child;
- } procdata;
- } procinfo;
-
- unsigned long fault_addr;
-
- struct {
- int fd;
- long band;
- } fileinfo;
-
- unsigned long sigval;
- } stuff;
-};
-
-asmlinkage int irix_sigpoll_sys(unsigned long __user *set,
- struct irix5_siginfo __user *info, struct timespec __user *tp)
-{
- long expire = MAX_SCHEDULE_TIMEOUT;
- sigset_t kset;
- int i, sig, error, timeo = 0;
- struct timespec ktp;
-
-#ifdef DEBUG_SIG
- printk("[%s:%d] irix_sigpoll_sys(%p,%p,%p)\n",
- current->comm, current->pid, set, info, tp);
-#endif
-
- /* Must always specify the signal set. */
- if (!set)
- return -EINVAL;
-
- if (copy_from_user(&kset, set, sizeof(set)))
- return -EFAULT;
-
- if (info && clear_user(info, sizeof(*info))) {
- error = -EFAULT;
- goto out;
- }
-
- if (tp) {
- if (copy_from_user(&ktp, tp, sizeof(*tp)))
- return -EFAULT;
-
- if (!ktp.tv_sec && !ktp.tv_nsec)
- return -EINVAL;
-
- expire = timespec_to_jiffies(&ktp) +
- (ktp.tv_sec || ktp.tv_nsec);
- }
-
- while(1) {
- long tmp = 0;
-
- expire = schedule_timeout_interruptible(expire);
-
- for (i=0; i < _IRIX_NSIG_WORDS; i++)
- tmp |= (current->pending.signal.sig[i] & kset.sig[i]);
-
- if (tmp)
- break;
- if (!expire) {
- timeo = 1;
- break;
- }
- if (signal_pending(current))
- return -EINTR;
- }
- if (timeo)
- return -EAGAIN;
-
- for (sig = 1; i <= 65 /* IRIX_NSIG */; sig++) {
- if (sigismember (&kset, sig))
- continue;
- if (sigismember (&current->pending.signal, sig)) {
- /* XXX need more than this... */
- if (info)
- return copy_to_user(&info->sig, &sig, sizeof(sig));
- return 0;
- }
- }
-
- /* Should not get here, but do something sane if we do. */
- error = -EINTR;
-
-out:
- return error;
-}
-
-/* This is here because of irix5_siginfo definition. */
-#define IRIX_P_PID 0
-#define IRIX_P_PGID 2
-#define IRIX_P_ALL 7
-
-#define W_EXITED 1
-#define W_TRAPPED 2
-#define W_STOPPED 4
-#define W_CONT 8
-#define W_NOHANG 64
-
-#define W_MASK (W_EXITED | W_TRAPPED | W_STOPPED | W_CONT | W_NOHANG)
-
-asmlinkage int irix_waitsys(int type, int upid,
- struct irix5_siginfo __user *info, int options,
- struct rusage __user *ru)
-{
- struct pid *pid = NULL;
- int flag, retval;
- DECLARE_WAITQUEUE(wait, current);
- struct task_struct *tsk;
- struct task_struct *p;
- struct list_head *_p;
-
- if (!info)
- return -EINVAL;
-
- if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
- return -EFAULT;
-
- if (ru)
- if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru)))
- return -EFAULT;
-
- if (options & ~W_MASK)
- return -EINVAL;
-
- if (type != IRIX_P_PID && type != IRIX_P_PGID && type != IRIX_P_ALL)
- return -EINVAL;
-
- if (type != IRIX_P_ALL)
- pid = find_get_pid(upid);
- add_wait_queue(&current->signal->wait_chldexit, &wait);
-repeat:
- flag = 0;
- current->state = TASK_INTERRUPTIBLE;
- read_lock(&tasklist_lock);
- tsk = current;
- list_for_each(_p, &tsk->children) {
- p = list_entry(_p, struct task_struct, sibling);
- if ((type == IRIX_P_PID) && task_pid(p) != pid)
- continue;
- if ((type == IRIX_P_PGID) && task_pgrp(p) != pid)
- continue;
- if ((p->exit_signal != SIGCHLD))
- continue;
- flag = 1;
- switch (p->state) {
- case TASK_STOPPED:
- if (!p->exit_code)
- continue;
- if (!(options & (W_TRAPPED|W_STOPPED)) &&
- !(p->ptrace & PT_PTRACED))
- continue;
- read_unlock(&tasklist_lock);
-
- /* move to end of parent's list to avoid starvation */
- write_lock_irq(&tasklist_lock);
- remove_parent(p);
- add_parent(p);
- write_unlock_irq(&tasklist_lock);
- retval = ru ? getrusage(p, RUSAGE_BOTH, ru) : 0;
- if (retval)
- goto end_waitsys;
-
- retval = __put_user(SIGCHLD, &info->sig);
- retval |= __put_user(0, &info->code);
- retval |= __put_user(task_pid_vnr(p), &info->stuff.procinfo.pid);
- retval |= __put_user((p->exit_code >> 8) & 0xff,
- &info->stuff.procinfo.procdata.child.status);
- retval |= __put_user(p->utime, &info->stuff.procinfo.procdata.child.utime);
- retval |= __put_user(p->stime, &info->stuff.procinfo.procdata.child.stime);
- if (retval)
- goto end_waitsys;
-
- p->exit_code = 0;
- goto end_waitsys;
-
- case EXIT_ZOMBIE:
- current->signal->cutime += p->utime + p->signal->cutime;
- current->signal->cstime += p->stime + p->signal->cstime;
- if (ru != NULL)
- getrusage(p, RUSAGE_BOTH, ru);
- retval = __put_user(SIGCHLD, &info->sig);
- retval |= __put_user(1, &info->code); /* CLD_EXITED */
- retval |= __put_user(task_pid_vnr(p), &info->stuff.procinfo.pid);
- retval |= __put_user((p->exit_code >> 8) & 0xff,
- &info->stuff.procinfo.procdata.child.status);
- retval |= __put_user(p->utime,
- &info->stuff.procinfo.procdata.child.utime);
- retval |= __put_user(p->stime,
- &info->stuff.procinfo.procdata.child.stime);
- if (retval)
- goto end_waitsys;
-
- if (p->real_parent != p->parent) {
- write_lock_irq(&tasklist_lock);
- remove_parent(p);
- p->parent = p->real_parent;
- add_parent(p);
- do_notify_parent(p, SIGCHLD);
- write_unlock_irq(&tasklist_lock);
- } else
- release_task(p);
- goto end_waitsys;
- default:
- continue;
- }
- tsk = next_thread(tsk);
- }
- read_unlock(&tasklist_lock);
- if (flag) {
- retval = 0;
- if (options & W_NOHANG)
- goto end_waitsys;
- retval = -ERESTARTSYS;
- if (signal_pending(current))
- goto end_waitsys;
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- goto repeat;
- }
- retval = -ECHILD;
-end_waitsys:
- current->state = TASK_RUNNING;
- remove_wait_queue(&current->signal->wait_chldexit, &wait);
- put_pid(pid);
-
- return retval;
-}
-
-struct irix5_context {
- u32 flags;
- u32 link;
- u32 sigmask[4];
- struct { u32 sp, size, flags; } stack;
- int regs[36];
- u32 fpregs[32];
- u32 fpcsr;
- u32 _unused0;
- u32 _unused1[47];
- u32 weird_graphics_thing;
-};
-
-asmlinkage int irix_getcontext(struct pt_regs *regs)
-{
- int error, i, base = 0;
- struct irix5_context __user *ctx;
- unsigned long flags;
-
- if (regs->regs[2] == 1000)
- base = 1;
- ctx = (struct irix5_context __user *) regs->regs[base + 4];
-
-#ifdef DEBUG_SIG
- printk("[%s:%d] irix_getcontext(%p)\n",
- current->comm, current->pid, ctx);
-#endif
-
- if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
- return -EFAULT;
-
- error = __put_user(current->thread.irix_oldctx, &ctx->link);
-
- error |= __copy_to_user(&ctx->sigmask, &current->blocked, sizeof(irix_sigset_t)) ? -EFAULT : 0;
-
- /* XXX Do sigstack stuff someday... */
- error |= __put_user(0, &ctx->stack.sp);
- error |= __put_user(0, &ctx->stack.size);
- error |= __put_user(0, &ctx->stack.flags);
-
- error |= __put_user(0, &ctx->weird_graphics_thing);
- error |= __put_user(0, &ctx->regs[0]);
- for (i = 1; i < 32; i++)
- error |= __put_user(regs->regs[i], &ctx->regs[i]);
- error |= __put_user(regs->lo, &ctx->regs[32]);
- error |= __put_user(regs->hi, &ctx->regs[33]);
- error |= __put_user(regs->cp0_cause, &ctx->regs[34]);
- error |= __put_user(regs->cp0_epc, &ctx->regs[35]);
-
- flags = 0x0f;
- if (!used_math()) {
- flags &= ~(0x08);
- } else {
- /* XXX wheee... */
- printk("Wheee, no code for saving IRIX FPU context yet.\n");
- }
- error |= __put_user(flags, &ctx->flags);
-
- return error;
-}
-
-asmlinkage void irix_setcontext(struct pt_regs *regs)
-{
- struct irix5_context __user *ctx;
- int err, base = 0;
- u32 flags;
-
- if (regs->regs[2] == 1000)
- base = 1;
- ctx = (struct irix5_context __user *) regs->regs[base + 4];
-
-#ifdef DEBUG_SIG
- printk("[%s:%d] irix_setcontext(%p)\n",
- current->comm, current->pid, ctx);
-#endif
-
- if (!access_ok(VERIFY_READ, ctx, sizeof(*ctx)))
- goto segv_and_exit;
-
- err = __get_user(flags, &ctx->flags);
- if (flags & 0x02) {
- /* XXX sigstack garbage, todo... */
- printk("Wheee, cannot do sigstack stuff in setcontext\n");
- }
-
- if (flags & 0x04) {
- int i;
-
- /* XXX extra control block stuff... todo... */
- for (i = 1; i < 32; i++)
- err |= __get_user(regs->regs[i], &ctx->regs[i]);
- err |= __get_user(regs->lo, &ctx->regs[32]);
- err |= __get_user(regs->hi, &ctx->regs[33]);
- err |= __get_user(regs->cp0_epc, &ctx->regs[35]);
- }
-
- if (flags & 0x08)
- /* XXX fpu context, blah... */
- printk(KERN_ERR "Wheee, cannot restore FPU context yet...\n");
-
- err |= __get_user(current->thread.irix_oldctx, &ctx->link);
- if (err)
- goto segv_and_exit;
-
- /*
- * Don't let your children do this ...
- */
- __asm__ __volatile__(
- "move\t$29,%0\n\t"
- "j\tsyscall_exit"
- :/* no outputs */
- :"r" (&regs));
- /* Unreached */
-
-segv_and_exit:
- force_sigsegv(SIGSEGV, current);
-}
-
-struct irix_sigstack {
- unsigned long sp;
- int status;
-};
-
-asmlinkage int irix_sigstack(struct irix_sigstack __user *new,
- struct irix_sigstack __user *old)
-{
-#ifdef DEBUG_SIG
- printk("[%s:%d] irix_sigstack(%p,%p)\n",
- current->comm, current->pid, new, old);
-#endif
- if (new) {
- if (!access_ok(VERIFY_READ, new, sizeof(*new)))
- return -EFAULT;
- }
-
- if (old) {
- if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
- return -EFAULT;
- }
-
- return 0;
-}
-
-struct irix_sigaltstack { unsigned long sp; int size; int status; };
-
-asmlinkage int irix_sigaltstack(struct irix_sigaltstack __user *new,
- struct irix_sigaltstack __user *old)
-{
-#ifdef DEBUG_SIG
- printk("[%s:%d] irix_sigaltstack(%p,%p)\n",
- current->comm, current->pid, new, old);
-#endif
- if (new)
- if (!access_ok(VERIFY_READ, new, sizeof(*new)))
- return -EFAULT;
-
- if (old) {
- if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
- return -EFAULT;
- }
-
- return 0;
-}
-
-struct irix_procset {
- int cmd, ltype, lid, rtype, rid;
-};
-
-asmlinkage int irix_sigsendset(struct irix_procset __user *pset, int sig)
-{
- if (!access_ok(VERIFY_READ, pset, sizeof(*pset)))
- return -EFAULT;
-#ifdef DEBUG_SIG
- printk("[%s:%d] irix_sigsendset([%d,%d,%d,%d,%d],%d)\n",
- current->comm, current->pid,
- pset->cmd, pset->ltype, pset->lid, pset->rtype, pset->rid,
- sig);
-#endif
- return -EINVAL;
-}