Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/mips/kernel/irixsig.c b/arch/mips/kernel/irixsig.c
new file mode 100644
index 0000000..3f956f8
--- /dev/null
+++ b/arch/mips/kernel/irixsig.c
@@ -0,0 +1,853 @@
+/*
+ * 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/smp_lock.h>
+#include <linux/time.h>
+#include <linux/ptrace.h>
+
+#include <asm/ptrace.h>
+#include <asm/uaccess.h>
+
+#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;
+ 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 void setup_irix_frame(struct k_sigaction *ka, struct pt_regs *regs,
+ int signr, sigset_t *oldmask)
+{
+ unsigned long sp;
+ struct sigctx_irix5 *ctx;
+ int i;
+
+ sp = regs->regs[29];
+ sp -= sizeof(struct sigctx_irix5);
+ sp &= ~(0xf);
+ ctx = (struct sigctx_irix5 *) sp;
+ if (!access_ok(VERIFY_WRITE, ctx, sizeof(*ctx)))
+ goto segv_and_exit;
+
+ __put_user(0, &ctx->weird_fpu_thing);
+ __put_user(~(0x00000001), &ctx->rmask);
+ __put_user(0, &ctx->regs[0]);
+ for(i = 1; i < 32; i++)
+ __put_user((u64) regs->regs[i], &ctx->regs[i]);
+
+ __put_user((u64) regs->hi, &ctx->hi);
+ __put_user((u64) regs->lo, &ctx->lo);
+ __put_user((u64) regs->cp0_epc, &ctx->pc);
+ __put_user(!!used_math(), &ctx->usedfp);
+ __put_user((u64) regs->cp0_cause, &ctx->cp0_cause);
+ __put_user((u64) regs->cp0_badvaddr, &ctx->cp0_badvaddr);
+
+ __put_user(0, &ctx->sstk_flags); /* XXX sigstack unimp... todo... */
+
+ __copy_to_user(&ctx->sigset, oldmask, sizeof(irix_sigset_t));
+
+#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;
+
+segv_and_exit:
+ force_sigsegv(signr, current);
+}
+
+static void 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 void handle_signal(unsigned long sig, siginfo_t *info,
+ struct k_sigaction *ka, sigset_t *oldset, struct pt_regs * regs)
+{
+ 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)
+ setup_irix_rt_frame(ka, regs, sig, oldset, info);
+ else
+ setup_irix_frame(ka, regs, sig, oldset);
+
+ if (!(ka->sa.sa_flags & SA_NODEFER)) {
+ spin_lock_irq(¤t->sighand->siglock);
+ sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask);
+ sigaddset(¤t->blocked,sig);
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+ }
+}
+
+asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs)
+{
+ struct k_sigaction ka;
+ 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 1;
+
+ if (try_to_freeze(0))
+ goto no_signal;
+
+ if (!oldset)
+ oldset = ¤t->blocked;
+
+ signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+ if (signr > 0) {
+ handle_signal(signr, &info, &ka, oldset, regs);
+ return 1;
+ }
+
+no_signal:
+ /*
+ * 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;
+ }
+ }
+ return 0;
+}
+
+asmlinkage void
+irix_sigreturn(struct pt_regs *regs)
+{
+ struct sigctx_irix5 *context, *magic;
+ unsigned long umask, mask;
+ u64 *fregs;
+ int 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 *) regs->regs[base + 4];
+ magic = (struct sigctx_irix5 *) 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
+
+ __get_user(regs->cp0_epc, &context->pc);
+ umask = context->rmask; mask = 2;
+ for (i = 1; i < 32; i++, mask <<= 1) {
+ if(umask & mask)
+ __get_user(regs->regs[i], &context->regs[i]);
+ }
+ __get_user(regs->hi, &context->hi);
+ __get_user(regs->lo, &context->lo);
+
+ if ((umask & 1) && context->usedfp) {
+ fregs = (u64 *) ¤t->thread.fpu;
+ for(i = 0; i < 32; i++)
+ fregs[i] = (u64) context->fpregs[i];
+ __get_user(current->thread.fpu.hard.fcr31, &context->fpcsr);
+ }
+
+ /* XXX do sigstack crapola here... XXX */
+
+ if (__copy_from_user(&blocked, &context->sigset, sizeof(blocked)))
+ goto badframe;
+
+ sigdelsetmask(&blocked, ~_BLOCKABLE);
+ spin_lock_irq(¤t->sighand->siglock);
+ current->blocked = blocked;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ /*
+ * Don't let your children do this ...
+ */
+ if (current_thread_info()->flags & TIF_SYSCALL_TRACE)
+ do_syscall_trace(regs, 1);
+ __asm__ __volatile__(
+ "move\t$29,%0\n\t"
+ "j\tsyscall_exit"
+ :/* no outputs */
+ :"r" (®s));
+ /* Unreached */
+
+badframe:
+ force_sig(SIGSEGV, current);
+}
+
+struct sigact_irix5 {
+ int flags;
+ void (*handler)(int);
+ u32 sigset[4];
+ int _unused0[2];
+};
+
+#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 *act,
+ struct sigaction *oact, void *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;
+ if (!access_ok(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;
+
+ __copy_from_user(&mask, &act->sa_mask, sizeof(sigset_t));
+
+ /*
+ * 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) {
+ if (!access_ok(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 ret;
+}
+
+asmlinkage int irix_sigpending(irix_sigset_t *set)
+{
+ return do_sigpending(set, sizeof(*set));
+}
+
+asmlinkage int irix_sigprocmask(int how, irix_sigset_t *new, irix_sigset_t *old)
+{
+ sigset_t oldbits, newbits;
+
+ if (new) {
+ if (!access_ok(VERIFY_READ, new, sizeof(*new)))
+ return -EFAULT;
+ __copy_from_user(&newbits, new, sizeof(unsigned long)*4);
+ sigdelsetmask(&newbits, ~_BLOCKABLE);
+
+ spin_lock_irq(¤t->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:
+ return -EINVAL;
+ }
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+ }
+ if(old) {
+ if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
+ return -EFAULT;
+ __copy_to_user(old, ¤t->blocked, sizeof(unsigned long)*4);
+ }
+
+ return 0;
+}
+
+asmlinkage int irix_sigsuspend(struct pt_regs *regs)
+{
+ sigset_t *uset, saveset, newset;
+
+ uset = (sigset_t *) regs->regs[4];
+ if (copy_from_user(&newset, uset, sizeof(sigset_t)))
+ return -EFAULT;
+ sigdelsetmask(&newset, ~_BLOCKABLE);
+
+ spin_lock_irq(¤t->sighand->siglock);
+ saveset = current->blocked;
+ current->blocked = newset;
+ recalc_sigpending();
+ spin_unlock_irq(¤t->sighand->siglock);
+
+ regs->regs[2] = -EINTR;
+ while (1) {
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ if (do_irix_signal(&saveset, regs))
+ return -EINTR;
+ }
+}
+
+/* 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;
+};
+
+static inline unsigned long timespectojiffies(struct timespec *value)
+{
+ unsigned long sec = (unsigned) value->tv_sec;
+ long nsec = value->tv_nsec;
+
+ if (sec > (LONG_MAX / HZ))
+ return LONG_MAX;
+ nsec += 1000000000L / HZ - 1;
+ nsec /= 1000000000L / HZ;
+ return HZ * sec + nsec;
+}
+
+asmlinkage int irix_sigpoll_sys(unsigned long *set, struct irix5_siginfo *info,
+ struct timespec *tp)
+{
+ long expire = MAX_SCHEDULE_TIMEOUT;
+ sigset_t kset;
+ int i, sig, error, timeo = 0;
+
+#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 (!access_ok(VERIFY_READ, set, sizeof(kset))) {
+ error = -EFAULT;
+ goto out;
+ }
+
+ __copy_from_user(&kset, set, sizeof(set));
+ if (error)
+ goto out;
+
+ if (info && clear_user(info, sizeof(*info))) {
+ error = -EFAULT;
+ goto out;
+ }
+
+ if (tp) {
+ if (!access_ok(VERIFY_READ, tp, sizeof(*tp)))
+ return -EFAULT;
+ if (!tp->tv_sec && !tp->tv_nsec) {
+ error = -EINVAL;
+ goto out;
+ }
+ expire = timespectojiffies(tp)+(tp->tv_sec||tp->tv_nsec);
+ }
+
+ while(1) {
+ long tmp = 0;
+
+ current->state = TASK_INTERRUPTIBLE;
+ expire = schedule_timeout(expire);
+
+ for (i=0; i<=4; 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 (¤t->pending.signal, sig)) {
+ /* XXX need more than this... */
+ if (info)
+ info->sig = sig;
+ error = 0;
+ goto out;
+ }
+ }
+
+ /* 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
+
+extern int getrusage(struct task_struct *, int, struct rusage __user *);
+
+#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 pid, struct irix5_siginfo *info,
+ int options, struct rusage *ru)
+{
+ int flag, retval;
+ DECLARE_WAITQUEUE(wait, current);
+ struct task_struct *tsk;
+ struct task_struct *p;
+ struct list_head *_p;
+
+ if (!info) {
+ retval = -EINVAL;
+ goto out;
+ }
+ if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) {
+ retval = -EFAULT;
+ goto out;
+ }
+ if (ru) {
+ if (!access_ok(VERIFY_WRITE, ru, sizeof(*ru))) {
+ retval = -EFAULT;
+ goto out;
+ }
+ }
+ if (options & ~(W_MASK)) {
+ retval = -EINVAL;
+ goto out;
+ }
+ if (type != IRIX_P_PID && type != IRIX_P_PGID && type != IRIX_P_ALL) {
+ retval = -EINVAL;
+ goto out;
+ }
+ add_wait_queue(¤t->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) && p->pid != pid)
+ continue;
+ if ((type == IRIX_P_PGID) && process_group(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, p->parent);
+ write_unlock_irq(&tasklist_lock);
+ retval = ru ? getrusage(p, RUSAGE_BOTH, ru) : 0;
+ if (!retval && ru) {
+ retval |= __put_user(SIGCHLD, &info->sig);
+ retval |= __put_user(0, &info->code);
+ retval |= __put_user(p->pid, &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) {
+ 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);
+ __put_user(SIGCHLD, &info->sig);
+ __put_user(1, &info->code); /* CLD_EXITED */
+ __put_user(p->pid, &info->stuff.procinfo.pid);
+ __put_user((p->exit_code >> 8) & 0xff,
+ &info->stuff.procinfo.procdata.child.status);
+ __put_user(p->utime,
+ &info->stuff.procinfo.procdata.child.utime);
+ __put_user(p->stime,
+ &info->stuff.procinfo.procdata.child.stime);
+ retval = 0;
+ if (p->real_parent != p->parent) {
+ write_lock_irq(&tasklist_lock);
+ remove_parent(p);
+ p->parent = p->real_parent;
+ add_parent(p, p->parent);
+ 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(¤t->signal->wait_chldexit, &wait);
+
+out:
+ 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 i, base = 0;
+ struct irix5_context *ctx;
+ unsigned long flags;
+
+ if (regs->regs[2] == 1000)
+ base = 1;
+ ctx = (struct irix5_context *) 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;
+
+ __put_user(current->thread.irix_oldctx, &ctx->link);
+
+ __copy_to_user(&ctx->sigmask, ¤t->blocked, sizeof(irix_sigset_t));
+
+ /* XXX Do sigstack stuff someday... */
+ __put_user(0, &ctx->stack.sp);
+ __put_user(0, &ctx->stack.size);
+ __put_user(0, &ctx->stack.flags);
+
+ __put_user(0, &ctx->weird_graphics_thing);
+ __put_user(0, &ctx->regs[0]);
+ for (i = 1; i < 32; i++)
+ __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 (!used_math()) {
+ flags &= ~(0x08);
+ } else {
+ /* XXX wheee... */
+ printk("Wheee, no code for saving IRIX FPU context yet.\n");
+ }
+ __put_user(flags, &ctx->flags);
+
+ return 0;
+}
+
+asmlinkage unsigned long irix_setcontext(struct pt_regs *regs)
+{
+ int error, base = 0;
+ struct irix5_context *ctx;
+
+ if(regs->regs[2] == 1000)
+ base = 1;
+ ctx = (struct irix5_context *) 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))) {
+ error = -EFAULT;
+ goto out;
+ }
+
+ if (ctx->flags & 0x02) {
+ /* XXX sigstack garbage, todo... */
+ printk("Wheee, cannot do sigstack stuff in setcontext\n");
+ }
+
+ if (ctx->flags & 0x04) {
+ int i;
+
+ /* XXX extra control block stuff... todo... */
+ for(i = 1; i < 32; i++)
+ regs->regs[i] = ctx->regs[i];
+ regs->lo = ctx->regs[32];
+ regs->hi = ctx->regs[33];
+ regs->cp0_epc = ctx->regs[35];
+ }
+
+ if (ctx->flags & 0x08) {
+ /* XXX fpu context, blah... */
+ printk("Wheee, cannot restore FPU context yet...\n");
+ }
+ current->thread.irix_oldctx = ctx->link;
+ error = regs->regs[2];
+
+out:
+ return error;
+}
+
+struct irix_sigstack { unsigned long sp; int status; };
+
+asmlinkage int irix_sigstack(struct irix_sigstack *new, struct irix_sigstack *old)
+{
+ int error = -EFAULT;
+
+#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)))
+ goto out;
+ }
+
+ if(old) {
+ if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
+ goto out;
+ }
+ error = 0;
+
+out:
+ return error;
+}
+
+struct irix_sigaltstack { unsigned long sp; int size; int status; };
+
+asmlinkage int irix_sigaltstack(struct irix_sigaltstack *new,
+ struct irix_sigaltstack *old)
+{
+ int error = -EFAULT;
+
+#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)))
+ goto out;
+ }
+
+ if (old) {
+ if (!access_ok(VERIFY_WRITE, old, sizeof(*old)))
+ goto out;
+ }
+ error = 0;
+
+out:
+ error = 0;
+
+ return error;
+}
+
+struct irix_procset {
+ int cmd, ltype, lid, rtype, rid;
+};
+
+asmlinkage int irix_sigsendset(struct irix_procset *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;
+}