1 files changed, 430 insertions, 0 deletions

diff --git a/arch/sparc64/solaris/signal.c b/arch/sparc64/solaris/signal.c
new file mode 100644
index 000000000000..7fa2634e2085
--- /dev/null
+++ b/arch/sparc64/solaris/signal.c
@@ -0,0 +1,430 @@
+/* $Id: signal.c,v 1.7 2000/09/05 21:44:54 davem Exp $
+ * signal.c: Signal emulation for Solaris
+ *
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/types.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+
+#include <asm/uaccess.h>
+#include <asm/svr4.h>
+#include <asm/string.h>
+
+#include "conv.h"
+#include "signal.h"
+
+#define _S(nr) (1L<<((nr)-1))
+
+#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
+
+long linux_to_solaris_signals[] = {
+        0,
+        SOLARIS_SIGHUP,         SOLARIS_SIGINT, 
+        SOLARIS_SIGQUIT,        SOLARIS_SIGILL,
+        SOLARIS_SIGTRAP,        SOLARIS_SIGIOT,
+        SOLARIS_SIGEMT,         SOLARIS_SIGFPE,
+        SOLARIS_SIGKILL,        SOLARIS_SIGBUS,
+        SOLARIS_SIGSEGV,        SOLARIS_SIGSYS,
+        SOLARIS_SIGPIPE,        SOLARIS_SIGALRM,
+        SOLARIS_SIGTERM,        SOLARIS_SIGURG,
+        SOLARIS_SIGSTOP,        SOLARIS_SIGTSTP,
+        SOLARIS_SIGCONT,        SOLARIS_SIGCLD,
+        SOLARIS_SIGTTIN,        SOLARIS_SIGTTOU,
+        SOLARIS_SIGPOLL,        SOLARIS_SIGXCPU,
+        SOLARIS_SIGXFSZ,        SOLARIS_SIGVTALRM,
+        SOLARIS_SIGPROF,        SOLARIS_SIGWINCH,
+        SOLARIS_SIGUSR1,        SOLARIS_SIGUSR1,
+        SOLARIS_SIGUSR2,        -1,
+};
+
+long solaris_to_linux_signals[] = {
+        0,
+        SIGHUP,         SIGINT,         SIGQUIT,        SIGILL,
+        SIGTRAP,        SIGIOT,         SIGEMT,         SIGFPE,
+        SIGKILL,        SIGBUS,         SIGSEGV,        SIGSYS,
+        SIGPIPE,        SIGALRM,        SIGTERM,        SIGUSR1,
+        SIGUSR2,        SIGCHLD,        -1,             SIGWINCH,
+        SIGURG,         SIGPOLL,        SIGSTOP,        SIGTSTP,
+        SIGCONT,        SIGTTIN,        SIGTTOU,        SIGVTALRM,
+        SIGPROF,        SIGXCPU,        SIGXFSZ,        -1,
+        -1,             -1,             -1,             -1,
+        -1,             -1,             -1,             -1,
+        -1,             -1,             -1,             -1,
+};
+
+static inline long mapsig(long sig)
+{
+        if ((unsigned long)sig > SOLARIS_NSIGNALS)
+                return -EINVAL;
+        return solaris_to_linux_signals[sig];
+}
+
+asmlinkage int solaris_kill(int pid, int sig)
+{
+        int (*sys_kill)(int,int) = 
+                (int (*)(int,int))SYS(kill);
+        int s = mapsig(sig);
+        
+        if (s < 0) return s;
+        return sys_kill(pid, s);
+}
+
+static long sig_handler(int sig, u32 arg, int one_shot)
+{
+        struct sigaction sa, old;
+        int ret;
+        mm_segment_t old_fs = get_fs();
+        int (*sys_sigaction)(int,struct sigaction __user *,struct sigaction __user *) = 
+                (int (*)(int,struct sigaction __user *,struct sigaction __user *))SYS(sigaction);
+        
+        sigemptyset(&sa.sa_mask);
+        sa.sa_restorer = NULL;
+        sa.sa_handler = (__sighandler_t)A(arg);
+        sa.sa_flags = 0;
+        if (one_shot) sa.sa_flags = SA_ONESHOT | SA_NOMASK;
+        set_fs (KERNEL_DS);
+        ret = sys_sigaction(sig, (void __user *)&sa, (void __user *)&old);
+        set_fs (old_fs);
+        if (ret < 0) return ret;
+        return (u32)(unsigned long)old.sa_handler;
+}
+
+static inline long solaris_signal(int sig, u32 arg)
+{
+        return sig_handler (sig, arg, 1);
+}
+
+static long solaris_sigset(int sig, u32 arg)
+{
+        if (arg != 2) /* HOLD */ {
+                spin_lock_irq(&current->sighand->siglock);
+                sigdelsetmask(&current->blocked, _S(sig));
+                recalc_sigpending();
+                spin_unlock_irq(&current->sighand->siglock);
+                return sig_handler (sig, arg, 0);
+        } else {
+                spin_lock_irq(&current->sighand->siglock);
+                sigaddsetmask(&current->blocked, (_S(sig) & ~_BLOCKABLE));
+                recalc_sigpending();
+                spin_unlock_irq(&current->sighand->siglock);
+                return 0;
+        }
+}
+
+static inline long solaris_sighold(int sig)
+{
+        return solaris_sigset(sig, 2);
+}
+
+static inline long solaris_sigrelse(int sig)
+{
+        spin_lock_irq(&current->sighand->siglock);
+        sigdelsetmask(&current->blocked, _S(sig));
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+        return 0;
+}
+
+static inline long solaris_sigignore(int sig)
+{
+        return sig_handler(sig, (u32)(unsigned long)SIG_IGN, 0);
+}
+
+static inline long solaris_sigpause(int sig)
+{
+        printk ("Need to support solaris sigpause\n");
+        return -ENOSYS;
+}
+
+asmlinkage long solaris_sigfunc(int sig, u32 arg)
+{
+        int func = sig & ~0xff;
+        
+        sig = mapsig(sig & 0xff); 
+        if (sig < 0) return sig; 
+        switch (func) {
+        case 0: return solaris_signal(sig, arg); 
+        case 0x100: return solaris_sigset(sig, arg); 
+        case 0x200: return solaris_sighold(sig);
+        case 0x400: return solaris_sigrelse(sig); 
+        case 0x800: return solaris_sigignore(sig); 
+        case 0x1000: return solaris_sigpause(sig);
+        }
+        return -EINVAL;
+}
+
+typedef struct {
+        u32 __sigbits[4];
+} sol_sigset_t;
+
+static inline int mapin(u32 *p, sigset_t *q)
+{
+        int i;
+        u32 x;
+        int sig;
+        
+        sigemptyset(q);
+        x = p[0];
+        for (i = 1; i <= SOLARIS_NSIGNALS; i++) {
+                if (x & 1) {
+                        sig = solaris_to_linux_signals[i];
+                        if (sig == -1)
+                                return -EINVAL;
+                        sigaddsetmask(q, (1L << (sig - 1)));
+                }
+                x >>= 1;
+                if (i == 32)
+                        x = p[1];
+        }
+        return 0;
+}
+
+static inline int mapout(sigset_t *q, u32 *p)
+{
+        int i;
+        int sig;
+        
+        p[0] = 0;
+        p[1] = 0;
+        for (i = 1; i <= 32; i++) {
+                if (sigismember(q, sigmask(i))) {
+                        sig = linux_to_solaris_signals[i];
+                        if (sig == -1)
+                                return -EINVAL;
+                        if (sig > 32)
+                                p[1] |= 1L << (sig - 33);
+                        else
+                                p[0] |= 1L << (sig - 1);
+                }
+        }
+        return 0;
+}
+
+asmlinkage int solaris_sigprocmask(int how, u32 in, u32 out)
+{
+        sigset_t in_s, *ins, out_s, *outs;
+        mm_segment_t old_fs = get_fs();
+        int ret;
+        int (*sys_sigprocmask)(int,sigset_t __user *,sigset_t __user *) = 
+                (int (*)(int,sigset_t __user *,sigset_t __user *))SYS(sigprocmask);
+        
+        ins = NULL; outs = NULL;
+        if (in) {
+                u32 tmp[2];
+                
+                if (copy_from_user (tmp, (void __user *)A(in), 2*sizeof(u32)))
+                        return -EFAULT;
+                ins = &in_s;
+                if (mapin (tmp, ins)) return -EINVAL;
+        }
+        if (out) outs = &out_s;
+        set_fs (KERNEL_DS);
+        ret = sys_sigprocmask((how == 3) ? SIG_SETMASK : how,
+                                (void __user *)ins, (void __user *)outs);
+        set_fs (old_fs);
+        if (ret) return ret;
+        if (out) {
+                u32 tmp[4];
+                
+                tmp[2] = 0; tmp[3] = 0;
+                if (mapout (outs, tmp)) return -EINVAL;
+                if (copy_to_user((void __user *)A(out), tmp, 4*sizeof(u32)))
+                        return -EFAULT;
+        }
+        return 0;
+}
+
+asmlinkage long do_sol_sigsuspend(u32 mask)
+{
+        sigset_t s;
+        u32 tmp[2];
+                
+        if (copy_from_user (tmp, (sol_sigset_t __user *)A(mask), 2*sizeof(u32)))
+                return -EFAULT;
+        if (mapin (tmp, &s)) return -EINVAL;
+        return (long)s.sig[0];
+}
+
+struct sol_sigaction {
+        int     sa_flags;
+        u32     sa_handler;
+        u32     sa_mask[4];
+        int     sa_resv[2];
+};
+
+asmlinkage int solaris_sigaction(int sig, u32 act, u32 old)
+{
+        u32 tmp, tmp2[4];
+        struct sigaction s, s2;
+        int ret;
+        mm_segment_t old_fs = get_fs();
+        struct sol_sigaction __user *p = (void __user *)A(old);
+        int (*sys_sigaction)(int,struct sigaction __user *,struct sigaction __user *) = 
+                (int (*)(int,struct sigaction __user *,struct sigaction __user *))SYS(sigaction);
+        
+        sig = mapsig(sig); 
+        if (sig < 0) {
+                /* We cheat a little bit for Solaris only signals */
+                if (old && clear_user(p, sizeof(struct sol_sigaction)))
+                        return -EFAULT;
+                return 0;
+        }
+        if (act) {
+                if (get_user (tmp, &p->sa_flags))
+                        return -EFAULT;
+                s.sa_flags = 0;
+                if (tmp & SOLARIS_SA_ONSTACK) s.sa_flags |= SA_STACK;
+                if (tmp & SOLARIS_SA_RESTART) s.sa_flags |= SA_RESTART;
+                if (tmp & SOLARIS_SA_NODEFER) s.sa_flags |= SA_NOMASK;
+                if (tmp & SOLARIS_SA_RESETHAND) s.sa_flags |= SA_ONESHOT;
+                if (tmp & SOLARIS_SA_NOCLDSTOP) s.sa_flags |= SA_NOCLDSTOP;
+                if (get_user (tmp, &p->sa_handler) ||
+                    copy_from_user (tmp2, &p->sa_mask, 2*sizeof(u32)))
+                        return -EFAULT;
+                s.sa_handler = (__sighandler_t)A(tmp);
+                if (mapin (tmp2, &s.sa_mask)) return -EINVAL;
+                s.sa_restorer = NULL;
+        }
+        set_fs(KERNEL_DS);
+        ret = sys_sigaction(sig, act ? (void __user *)&s : NULL,
+                                 old ? (void __user *)&s2 : NULL);
+        set_fs(old_fs);
+        if (ret) return ret;
+        if (old) {
+                if (mapout (&s2.sa_mask, tmp2)) return -EINVAL;
+                tmp = 0; tmp2[2] = 0; tmp2[3] = 0;
+                if (s2.sa_flags & SA_STACK) tmp |= SOLARIS_SA_ONSTACK;
+                if (s2.sa_flags & SA_RESTART) tmp |= SOLARIS_SA_RESTART;
+                if (s2.sa_flags & SA_NOMASK) tmp |= SOLARIS_SA_NODEFER;
+                if (s2.sa_flags & SA_ONESHOT) tmp |= SOLARIS_SA_RESETHAND;
+                if (s2.sa_flags & SA_NOCLDSTOP) tmp |= SOLARIS_SA_NOCLDSTOP;
+                if (put_user (tmp, &p->sa_flags) ||
+                    __put_user ((u32)(unsigned long)s2.sa_handler, &p->sa_handler) ||
+                    copy_to_user (&p->sa_mask, tmp2, 4*sizeof(u32)))
+                        return -EFAULT;
+        }
+        return 0;
+}
+
+asmlinkage int solaris_sigpending(int which, u32 set)
+{
+        sigset_t s;
+        u32 tmp[4];
+        switch (which) {
+        case 1: /* sigpending */
+                spin_lock_irq(&current->sighand->siglock);
+                sigandsets(&s, &current->blocked, &current->pending.signal);
+                recalc_sigpending();
+                spin_unlock_irq(&current->sighand->siglock);
+                break;
+        case 2: /* sigfillset - I just set signals which have linux equivalents */
+                sigfillset(&s);
+                break;
+        default: return -EINVAL;
+        }
+        if (mapout (&s, tmp)) return -EINVAL;
+        tmp[2] = 0; tmp[3] = 0;
+        if (copy_to_user ((u32 __user *)A(set), tmp, sizeof(tmp)))
+                return -EFAULT;
+        return 0;
+}
+
+asmlinkage int solaris_wait(u32 stat_loc)
+{
+        unsigned __user *p = (unsigned __user *)A(stat_loc);
+        int (*sys_wait4)(pid_t,unsigned __user *, int, struct rusage __user *) =
+                (int (*)(pid_t,unsigned __user *, int, struct rusage __user *))SYS(wait4);
+        int ret, status;
+        
+        ret = sys_wait4(-1, p, WUNTRACED, NULL);
+        if (ret >= 0 && stat_loc) {
+                if (get_user (status, p))
+                        return -EFAULT;
+                if (((status - 1) & 0xffff) < 0xff)
+                        status = linux_to_solaris_signals[status & 0x7f] & 0x7f;
+                else if ((status & 0xff) == 0x7f)
+                        status = (linux_to_solaris_signals[(status >> 8) & 0xff] << 8) | 0x7f;
+                if (__put_user (status, p))
+                        return -EFAULT;
+        }
+        return ret;
+}
+
+asmlinkage int solaris_waitid(int idtype, s32 pid, u32 info, int options)
+{
+        int (*sys_wait4)(pid_t,unsigned __user *, int, struct rusage __user *) =
+                (int (*)(pid_t,unsigned __user *, int, struct rusage __user *))SYS(wait4);
+        int opts, status, ret;
+        
+        switch (idtype) {
+        case 0: /* P_PID */ break;
+        case 1: /* P_PGID */ pid = -pid; break;
+        case 7: /* P_ALL */ pid = -1; break;
+        default: return -EINVAL;
+        }
+        opts = 0;
+        if (options & SOLARIS_WUNTRACED) opts |= WUNTRACED;
+        if (options & SOLARIS_WNOHANG) opts |= WNOHANG;
+        current->state = TASK_RUNNING;
+        ret = sys_wait4(pid, (unsigned int __user *)A(info), opts, NULL);
+        if (ret < 0) return ret;
+        if (info) {
+                struct sol_siginfo __user *s = (void __user *)A(info);
+        
+                if (get_user (status, (unsigned int __user *)A(info)))
+                        return -EFAULT;
+
+                if (__put_user (SOLARIS_SIGCLD, &s->si_signo) ||
+                    __put_user (ret, &s->_data._proc._pid))
+                        return -EFAULT;
+
+                switch (status & 0xff) {
+                case 0: ret = SOLARIS_CLD_EXITED;
+                        status = (status >> 8) & 0xff;
+                        break;
+                case 0x7f:
+                        status = (status >> 8) & 0xff;
+                        switch (status) {
+                        case SIGSTOP:
+                        case SIGTSTP: ret = SOLARIS_CLD_STOPPED;
+                        default: ret = SOLARIS_CLD_EXITED;
+                        }
+                        status = linux_to_solaris_signals[status];
+                        break;
+                default:
+                        if (status & 0x80) ret = SOLARIS_CLD_DUMPED;
+                        else ret = SOLARIS_CLD_KILLED;
+                        status = linux_to_solaris_signals[status & 0x7f];
+                        break;
+                }
+
+                if (__put_user (ret, &s->si_code) ||
+                    __put_user (status, &s->_data._proc._pdata._cld._status))
+                        return -EFAULT;
+        }
+        return 0;
+}
+
+extern int svr4_setcontext(svr4_ucontext_t *c, struct pt_regs *regs);
+extern int svr4_getcontext(svr4_ucontext_t *c, struct pt_regs *regs);
+
+asmlinkage int solaris_context(struct pt_regs *regs)
+{
+        switch ((unsigned)regs->u_regs[UREG_I0]) {
+        case 0: /* getcontext */
+                return svr4_getcontext((svr4_ucontext_t *)(long)(u32)regs->u_regs[UREG_I1], regs);
+        case 1: /* setcontext */
+                return svr4_setcontext((svr4_ucontext_t *)(long)(u32)regs->u_regs[UREG_I1], regs);
+        default:
+                return -EINVAL;
+
+        }
+}
+
+asmlinkage int solaris_sigaltstack(u32 ss, u32 oss)
+{
+/* XXX Implement this soon */
+        return 0;
+}