Drop darwin-user

It's been orphaned, not compiling for a long time and despite Apple's
drop of their Rosetta ppc emulation technology with Mac OS X Lion no one
has stepped up to fix it.

Testing necessary changes wrt QOM'ification thus is impossible, so we
might as well remove it completely.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 0 insertions, 452 deletions

diff --git a/darwin-user/signal.c b/darwin-user/signal.c
deleted file mode 100644
index 489cb64282..0000000000
--- a/darwin-user/signal.c
+++ /dev/null
@@ -1,452 +0,0 @@
-/*
- *  Emulation of Linux signals
- *
- *  Copyright (c) 2003 Fabrice Bellard
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <errno.h>
-#include <sys/ucontext.h>
-
-#ifdef __ia64__
-#undef uc_mcontext
-#undef uc_sigmask
-#undef uc_stack
-#undef uc_link
-#endif
-
-#include "qemu.h"
-#include "qemu-common.h"
-
-#define DEBUG_SIGNAL
-
-#define MAX_SIGQUEUE_SIZE 1024
-
-struct sigqueue {
-    struct sigqueue *next;
-    target_siginfo_t info;
-};
-
-struct emulated_sigaction {
-    struct target_sigaction sa;
-    int pending; /* true if signal is pending */
-    struct sigqueue *first;
-    struct sigqueue info; /* in order to always have memory for the
-                             first signal, we put it here */
-};
-
-static struct sigaltstack target_sigaltstack_used = {
-    0, 0, SA_DISABLE
-};
-
-static struct emulated_sigaction sigact_table[NSIG];
-static struct sigqueue sigqueue_table[MAX_SIGQUEUE_SIZE]; /* siginfo queue */
-static struct sigqueue *first_free; /* first free siginfo queue entry */
-static int signal_pending; /* non zero if a signal may be pending */
-
-static void host_signal_handler(int host_signum, siginfo_t *info,
-                                void *puc);
-
-
-static inline int host_to_target_signal(int sig)
-{
-    return sig;
-}
-
-static inline int target_to_host_signal(int sig)
-{
-    return sig;
-}
-
-/* siginfo conversion */
-
-
-
-void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info)
-{
-
-}
-
-void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo)
-{
-
-}
-
-void signal_init(void)
-{
-    struct sigaction act;
-    int i;
-
-    /* set all host signal handlers. ALL signals are blocked during
-       the handlers to serialize them. */
-    sigfillset(&act.sa_mask);
-    act.sa_flags = SA_SIGINFO;
-    act.sa_sigaction = host_signal_handler;
-    for(i = 1; i < NSIG; i++) {
-        sigaction(i, &act, NULL);
-    }
-
-    memset(sigact_table, 0, sizeof(sigact_table));
-
-    first_free = &sigqueue_table[0];
-    for(i = 0; i < MAX_SIGQUEUE_SIZE - 1; i++)
-        sigqueue_table[i].next = &sigqueue_table[i + 1];
-    sigqueue_table[MAX_SIGQUEUE_SIZE - 1].next = NULL;
-}
-
-/* signal queue handling */
-
-static inline struct sigqueue *alloc_sigqueue(void)
-{
-    struct sigqueue *q = first_free;
-    if (!q)
-        return NULL;
-    first_free = q->next;
-    return q;
-}
-
-static inline void free_sigqueue(struct sigqueue *q)
-{
-    q->next = first_free;
-    first_free = q;
-}
-
-/* abort execution with signal */
-void QEMU_NORETURN force_sig(int sig)
-{
-    int host_sig;
-    host_sig = target_to_host_signal(sig);
-    fprintf(stderr, "qemu: uncaught target signal %d (%s) - exiting\n",
-            sig, strsignal(host_sig));
-    _exit(-host_sig);
-}
-
-/* queue a signal so that it will be send to the virtual CPU as soon
-   as possible */
-int queue_signal(int sig, target_siginfo_t *info)
-{
-    struct emulated_sigaction *k;
-    struct sigqueue *q, **pq;
-    target_ulong handler;
-
-#if defined(DEBUG_SIGNAL)
-    fprintf(stderr, "queue_signal: sig=%d\n",
-            sig);
-#endif
-    k = &sigact_table[sig - 1];
-    handler = (target_ulong)k->sa.sa_handler;
-    if (handler == SIG_DFL) {
-        /* default handler : ignore some signal. The other are fatal */
-        if (sig != SIGCHLD &&
-            sig != SIGURG &&
-            sig != SIGWINCH) {
-            force_sig(sig);
-        } else {
-            return 0; /* indicate ignored */
-        }
-    } else if (handler == host_to_target_signal(SIG_IGN)) {
-        /* ignore signal */
-        return 0;
-    } else if (handler == host_to_target_signal(SIG_ERR)) {
-        force_sig(sig);
-    } else {
-        pq = &k->first;
-        if (!k->pending) {
-            /* first signal */
-            q = &k->info;
-        } else {
-            q = alloc_sigqueue();
-            if (!q)
-                return -EAGAIN;
-            while (*pq != NULL)
-                pq = &(*pq)->next;
-        }
-        *pq = q;
-        q->info = *info;
-        q->next = NULL;
-        k->pending = 1;
-        /* signal that a new signal is pending */
-        signal_pending = 1;
-        return 1; /* indicates that the signal was queued */
-    }
-}
-
-static void host_signal_handler(int host_signum, siginfo_t *info,
-                                void *puc)
-{
-    int sig;
-    target_siginfo_t tinfo;
-
-    /* the CPU emulator uses some host signals to detect exceptions,
-       we we forward to it some signals */
-    if (host_signum == SIGSEGV || host_signum == SIGBUS) {
-        if (cpu_signal_handler(host_signum, (void*)info, puc))
-            return;
-    }
-
-    /* get target signal number */
-    sig = host_to_target_signal(host_signum);
-    if (sig < 1 || sig > NSIG)
-        return;
-
-#if defined(DEBUG_SIGNAL)
-	fprintf(stderr, "qemu: got signal %d\n", sig);
-#endif
-    if (queue_signal(sig, &tinfo) == 1) {
-        /* interrupt the virtual CPU as soon as possible */
-        cpu_exit(global_env);
-    }
-}
-
-int do_sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss)
-{
-    /* XXX: test errors */
-    if(oss)
-    {
-        oss->ss_sp = tswap32(target_sigaltstack_used.ss_sp);
-        oss->ss_size = tswap32(target_sigaltstack_used.ss_size);
-        oss->ss_flags = tswap32(target_sigaltstack_used.ss_flags);
-    }
-    if(ss)
-    {
-        target_sigaltstack_used.ss_sp = tswap32(ss->ss_sp);
-        target_sigaltstack_used.ss_size = tswap32(ss->ss_size);
-        target_sigaltstack_used.ss_flags = tswap32(ss->ss_flags);
-    }
-    return 0;
-}
-
-int do_sigaction(int sig, const struct sigaction *act,
-                 struct sigaction *oact)
-{
-    struct emulated_sigaction *k;
-    struct sigaction act1;
-    int host_sig;
-
-    if (sig < 1 || sig > NSIG)
-        return -EINVAL;
-
-    k = &sigact_table[sig - 1];
-#if defined(DEBUG_SIGNAL)
-    fprintf(stderr, "sigaction 1 sig=%d act=0x%08x, oact=0x%08x\n",
-            sig, (int)act, (int)oact);
-#endif
-    if (oact) {
-#if defined(DEBUG_SIGNAL)
-    fprintf(stderr, "sigaction 1 sig=%d act=0x%08x, oact=0x%08x\n",
-            sig, (int)act, (int)oact);
-#endif
-
-        oact->sa_handler = tswapl(k->sa.sa_handler);
-        oact->sa_flags = tswapl(k->sa.sa_flags);
-        oact->sa_mask = tswapl(k->sa.sa_mask);
-    }
-    if (act) {
-#if defined(DEBUG_SIGNAL)
-    fprintf(stderr, "sigaction handler 0x%x flag 0x%x mask 0x%x\n",
-            act->sa_handler, act->sa_flags, act->sa_mask);
-#endif
-
-        k->sa.sa_handler = tswapl(act->sa_handler);
-        k->sa.sa_flags = tswapl(act->sa_flags);
-        k->sa.sa_mask = tswapl(act->sa_mask);
-        /* we update the host signal state */
-        host_sig = target_to_host_signal(sig);
-        if (host_sig != SIGSEGV && host_sig != SIGBUS) {
-#if defined(DEBUG_SIGNAL)
-            fprintf(stderr, "sigaction handler going to call sigaction\n");
-#endif
-
-            sigfillset(&act1.sa_mask);
-            act1.sa_flags = SA_SIGINFO;
-            if (k->sa.sa_flags & SA_RESTART)
-                act1.sa_flags |= SA_RESTART;
-            /* NOTE: it is important to update the host kernel signal
-               ignore state to avoid getting unexpected interrupted
-               syscalls */
-            if (k->sa.sa_handler == SIG_IGN) {
-                act1.sa_sigaction = (void *)SIG_IGN;
-            } else if (k->sa.sa_handler == SIG_DFL) {
-                act1.sa_sigaction = (void *)SIG_DFL;
-            } else {
-                act1.sa_sigaction = host_signal_handler;
-            }
-            sigaction(host_sig, &act1, NULL);
-        }
-    }
-    return 0;
-}
-
-
-#ifdef TARGET_I386
-
-static inline void *
-get_sigframe(struct emulated_sigaction *ka, CPUX86State *env, size_t frame_size)
-{
-    /* XXX Fix that */
-    if(target_sigaltstack_used.ss_flags & SA_DISABLE)
-    {
-        int esp;
-        /* Default to using normal stack */
-        esp = env->regs[R_ESP];
-
-        return (void *)((esp - frame_size) & -8ul);
-    }
-    else
-    {
-        return target_sigaltstack_used.ss_sp;
-    }
-}
-
-static void setup_frame(int sig, struct emulated_sigaction *ka,
-                        void *set, CPUX86State *env)
-{
-	void *frame;
-
-    fprintf(stderr, "setup_frame %d\n", sig);
-	frame = get_sigframe(ka, env, sizeof(*frame));
-
-	/* Set up registers for signal handler */
-	env->regs[R_ESP] = (unsigned long) frame;
-	env->eip = (unsigned long) ka->sa.sa_handler;
-
-	env->eflags &= ~TF_MASK;
-
-	return;
-
-give_sigsegv:
-	if (sig == SIGSEGV)
-		ka->sa.sa_handler = SIG_DFL;
-	force_sig(SIGSEGV /* , current */);
-}
-
-long do_sigreturn(CPUX86State *env, int num)
-{
-    int i = 0;
-    struct target_sigcontext *scp = get_int_arg(&i, env);
-    /* XXX Get current signal number */
-    /* XXX Adjust accordin to sc_onstack, sc_mask */
-    if(tswapl(scp->sc_onstack) & 0x1)
-        target_sigaltstack_used.ss_flags |= ~SA_DISABLE;
-    else
-        target_sigaltstack_used.ss_flags &=  SA_DISABLE;
-    int set = tswapl(scp->sc_eax);
-    sigprocmask(SIG_SETMASK, &set, NULL);
-
-    fprintf(stderr, "do_sigreturn: partially implemented %x EAX:%x EBX:%x\n", scp->sc_mask, tswapl(scp->sc_eax), tswapl(scp->sc_ebx));
-    fprintf(stderr, "ECX:%x EDX:%x EDI:%x\n", scp->sc_ecx, tswapl(scp->sc_edx), tswapl(scp->sc_edi));
-    fprintf(stderr, "EIP:%x\n", tswapl(scp->sc_eip));
-
-    env->regs[R_EAX] = tswapl(scp->sc_eax);
-    env->regs[R_EBX] = tswapl(scp->sc_ebx);
-    env->regs[R_ECX] = tswapl(scp->sc_ecx);
-    env->regs[R_EDX] = tswapl(scp->sc_edx);
-    env->regs[R_EDI] = tswapl(scp->sc_edi);
-    env->regs[R_ESI] = tswapl(scp->sc_esi);
-    env->regs[R_EBP] = tswapl(scp->sc_ebp);
-    env->regs[R_ESP] = tswapl(scp->sc_esp);
-    env->segs[R_SS].selector = (void*)tswapl(scp->sc_ss);
-    env->eflags = tswapl(scp->sc_eflags);
-    env->eip = tswapl(scp->sc_eip);
-    env->segs[R_CS].selector = (void*)tswapl(scp->sc_cs);
-    env->segs[R_DS].selector = (void*)tswapl(scp->sc_ds);
-    env->segs[R_ES].selector = (void*)tswapl(scp->sc_es);
-    env->segs[R_FS].selector = (void*)tswapl(scp->sc_fs);
-    env->segs[R_GS].selector = (void*)tswapl(scp->sc_gs);
-
-    /* Again, because our caller's caller will reset EAX */
-    return env->regs[R_EAX];
-}
-
-#else
-
-static void setup_frame(int sig, struct emulated_sigaction *ka,
-			void *set, CPUArchState *env)
-{
-    fprintf(stderr, "setup_frame: not implemented\n");
-}
-
-long do_sigreturn(CPUArchState *env, int num)
-{
-    int i = 0;
-    struct target_sigcontext *scp = get_int_arg(&i, env);
-    fprintf(stderr, "do_sigreturn: not implemented\n");
-    return -ENOSYS;
-}
-
-#endif
-
-void process_pending_signals(void *cpu_env)
-{
-    struct emulated_sigaction *k;
-    struct sigqueue *q;
-    target_ulong handler;
-    int sig;
-
-    if (!signal_pending)
-        return;
-
-    k = sigact_table;
-
-    for(sig = 1; sig <= NSIG; sig++) {
-        if (k->pending)
-            goto handle_signal;
-        k++;
-    }
-
-    /* if no signal is pending, just return */
-    signal_pending = 0;
-    return;
-handle_signal:
-    #ifdef DEBUG_SIGNAL
-    fprintf(stderr, "qemu: process signal %d\n", sig);
-    #endif
-    /* dequeue signal */
-    q = k->first;
-    k->first = q->next;
-    if (!k->first)
-        k->pending = 0;
-
-    sig = gdb_handlesig (cpu_env, sig);
-    if (!sig) {
-        fprintf (stderr, "Lost signal\n");
-        abort();
-    }
-
-    handler = k->sa.sa_handler;
-    if (handler == SIG_DFL) {
-        /* default handler : ignore some signal. The other are fatal */
-        if (sig != SIGCHLD &&
-            sig != SIGURG &&
-            sig != SIGWINCH) {
-            force_sig(sig);
-        }
-    } else if (handler == SIG_IGN) {
-        /* ignore sig */
-    } else if (handler == SIG_ERR) {
-        force_sig(sig);
-    } else {
-
-        setup_frame(sig, k, 0, cpu_env);
-	if (k->sa.sa_flags & SA_RESETHAND)
-            k->sa.sa_handler = SIG_DFL;
-    }
-    if (q != &k->info)
-        free_sigqueue(q);
-}