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/*
* irixsig.c: WHEEE, IRIX signals! YOW, am I compatable 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 <asm/ptrace.h>
#include <asm/uaccess.h>
extern asmlinkage void syscall_trace(void);
#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(current->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.sa_restorer;
return;
segv_and_exit:
if (signr == SIGSEGV)
ka->sa.sa_handler = SIG_DFL;
force_sig(SIGSEGV, 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, 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(struct pt_regs *regs, struct k_sigaction *ka)
{
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. */
}
asmlinkage int do_irix_signal(sigset_t *oldset, struct pt_regs *regs)
{
struct k_sigaction *ka;
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;
if ((current->ptrace & PT_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;
/* 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;
}
}
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)
/* nothing */;
continue;
}
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;
case SIGTSTP: case SIGTTIN: case SIGTTOU:
if (is_orphaned_pgrp(current->pgrp))
continue;
/* FALLTHRU */
case SIGSTOP:
current->state = TASK_STOPPED;
current->exit_code = signr;
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 SIGABRT: case SIGFPE: case SIGSEGV:
if (do_coredump(signr, regs))
exit_code |= 0x80;
/* FALLTHRU */
default:
sigaddset(¤t->pending.signal, signr);
recalc_sigpending(current);
current->flags |= PF_SIGNALED;
do_exit(exit_code);
/* NOTREACHED */
}
}
if (regs->regs[0])
syscall_restart(regs, ka);
/* 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->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;
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.control, &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->sigmask_lock);
current->blocked = blocked;
recalc_sigpending(current);
spin_unlock_irq(¤t->sigmask_lock);
/*
* Don't let your children do this ...
*/
if (current->ptrace & PT_TRACESYS)
syscall_trace();
__asm__ __volatile__(
"move\t$29,%0\n\t"
"j\tret_from_sys_call"
:/* 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 (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;
__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.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 (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 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;
int error;
if (new) {
error = verify_area(VERIFY_READ, new, sizeof(*new));
if (error)
return error;
__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:
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(current);
spin_unlock_irq(¤t->sigmask_lock);
}
if(old) {
error = verify_area(VERIFY_WRITE, old, sizeof(*old));
if(error)
return error;
__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->sigmask_lock);
saveset = current->blocked;
current->blocked = newset;
recalc_sigpending(current);
spin_unlock_irq(¤t->sigmask_lock);
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;
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))) {
error = -EFAULT;
goto out;
}
if(tp) {
error = verify_area(VERIFY_READ, tp, sizeof(*tp));
if(error)
return error;
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 P_PID 0
#define P_PGID 2
#define P_ALL 7
extern int getrusage(struct task_struct *, int, struct rusage *);
#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 *p;
if (!info) {
retval = -EINVAL;
goto out;
}
retval = verify_area(VERIFY_WRITE, info, sizeof(*info));
if(retval)
goto out;
if (ru) {
retval = verify_area(VERIFY_WRITE, ru, sizeof(*ru));
if(retval)
goto out;
}
if (options & ~(W_MASK)) {
retval = -EINVAL;
goto out;
}
if (type != P_PID && type != P_PGID && type != P_ALL) {
retval = -EINVAL;
goto out;
}
add_wait_queue(¤t->wait_chldexit, &wait);
repeat:
flag = 0;
current->state = TASK_INTERRUPTIBLE;
read_lock(&tasklist_lock);
for (p = current->p_cptr; p; p = p->p_osptr) {
if ((type == P_PID) && p->pid != pid)
continue;
if ((type == P_PGID) && p->pgrp != 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;
if (ru != NULL)
getrusage(p, RUSAGE_BOTH, ru);
__put_user(SIGCHLD, &info->sig);
__put_user(0, &info->code);
__put_user(p->pid, &info->stuff.procinfo.pid);
__put_user((p->exit_code >> 8) & 0xff,
&info->stuff.procinfo.procdata.child.status);
__put_user(p->times.tms_utime, &info->stuff.procinfo.procdata.child.utime);
__put_user(p->times.tms_stime, &info->stuff.procinfo.procdata.child.stime);
p->exit_code = 0;
retval = 0;
goto end_waitsys;
case TASK_ZOMBIE:
current->times.tms_cutime += p->times.tms_utime + p->times.tms_cutime;
current->times.tms_cstime += p->times.tms_stime + p->times.tms_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->times.tms_utime,
&info->stuff.procinfo.procdata.child.utime);
__put_user(p->times.tms_stime,
&info->stuff.procinfo.procdata.child.stime);
retval = 0;
if (p->p_opptr != p->p_pptr) {
REMOVE_LINKS(p);
p->p_pptr = p->p_opptr;
SET_LINKS(p);
notify_parent(p, SIGCHLD);
} else
release_task(p);
goto end_waitsys;
default:
continue;
}
}
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->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 error, 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
error = verify_area(VERIFY_WRITE, ctx, sizeof(*ctx));
if(error)
goto out;
__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(!current->used_math) {
flags &= ~(0x08);
} else {
/* XXX wheee... */
printk("Wheee, no code for saving IRIX FPU context yet.\n");
}
__put_user(flags, &ctx->flags);
error = 0;
out:
return error;
}
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
error = verify_area(VERIFY_READ, ctx, sizeof(*ctx));
if (error)
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;
#ifdef DEBUG_SIG
printk("[%s:%d] irix_sigstack(%p,%p)\n",
current->comm, current->pid, new, old);
#endif
if(new) {
error = verify_area(VERIFY_READ, new, sizeof(*new));
if(error)
goto out;
}
if(old) {
error = verify_area(VERIFY_WRITE, old, sizeof(*old));
if(error)
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;
#ifdef DEBUG_SIG
printk("[%s:%d] irix_sigaltstack(%p,%p)\n",
current->comm, current->pid, new, old);
#endif
if (new) {
error = verify_area(VERIFY_READ, new, sizeof(*new));
if(error)
goto out;
}
if (old) {
error = verify_area(VERIFY_WRITE, old, sizeof(*old));
if(error)
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)
{
int error;
error = verify_area(VERIFY_READ, pset, sizeof(*pset));
if(error)
goto out;
#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
error = -EINVAL;
out:
return error;
}
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