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-rw-r--r--linux-user/signal.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c
index b2c0623a4..075638097 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -4028,6 +4028,189 @@ sigsegv:
return 0;
}
+#elif defined(TARGET_M68K)
+
+struct target_sigcontext {
+ abi_ulong sc_mask;
+ abi_ulong sc_usp;
+ abi_ulong sc_d0;
+ abi_ulong sc_d1;
+ abi_ulong sc_a0;
+ abi_ulong sc_a1;
+ unsigned short sc_sr;
+ abi_ulong sc_pc;
+};
+
+struct target_sigframe
+{
+ abi_ulong pretcode;
+ int sig;
+ int code;
+ abi_ulong psc;
+ char retcode[8];
+ abi_ulong extramask[TARGET_NSIG_WORDS-1];
+ struct target_sigcontext sc;
+};
+
+static int
+setup_sigcontext(struct target_sigcontext *sc, CPUState *env, abi_ulong mask)
+{
+ int err = 0;
+
+ err |= __put_user(mask, &sc->sc_mask);
+ err |= __put_user(env->aregs[7], &sc->sc_usp);
+ err |= __put_user(env->dregs[0], &sc->sc_d0);
+ err |= __put_user(env->dregs[1], &sc->sc_d1);
+ err |= __put_user(env->aregs[0], &sc->sc_a0);
+ err |= __put_user(env->aregs[1], &sc->sc_a1);
+ err |= __put_user(env->sr, &sc->sc_sr);
+ err |= __put_user(env->pc, &sc->sc_pc);
+
+ return err;
+}
+
+static int
+restore_sigcontext(CPUState *env, struct target_sigcontext *sc, int *pd0)
+{
+ int err = 0;
+ int temp;
+
+ err |= __get_user(env->aregs[7], &sc->sc_usp);
+ err |= __get_user(env->dregs[1], &sc->sc_d1);
+ err |= __get_user(env->aregs[0], &sc->sc_a0);
+ err |= __get_user(env->aregs[1], &sc->sc_a1);
+ err |= __get_user(env->pc, &sc->sc_pc);
+ err |= __get_user(temp, &sc->sc_sr);
+ env->sr = (env->sr & 0xff00) | (temp & 0xff);
+
+ *pd0 = tswapl(sc->sc_d0);
+
+ return err;
+}
+
+/*
+ * Determine which stack to use..
+ */
+static inline abi_ulong
+get_sigframe(struct target_sigaction *ka, CPUState *regs, size_t frame_size)
+{
+ unsigned long sp;
+
+ sp = regs->aregs[7];
+
+ /* This is the X/Open sanctioned signal stack switching. */
+ if ((ka->sa_flags & TARGET_SA_ONSTACK) && (sas_ss_flags (sp) == 0)) {
+ sp = target_sigaltstack_used.ss_sp + target_sigaltstack_used.ss_size;
+ }
+
+ return ((sp - frame_size) & -8UL);
+}
+
+static void setup_frame(int sig, struct target_sigaction *ka,
+ target_sigset_t *set, CPUState *env)
+{
+ struct target_sigframe *frame;
+ abi_ulong frame_addr;
+ abi_ulong retcode_addr;
+ abi_ulong sc_addr;
+ int err = 0;
+ int i;
+
+ frame_addr = get_sigframe(ka, env, sizeof *frame);
+ if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0))
+ goto give_sigsegv;
+
+ err |= __put_user(sig, &frame->sig);
+
+ sc_addr = frame_addr + offsetof(struct target_sigframe, sc);
+ err |= __put_user(sc_addr, &frame->psc);
+
+ err |= setup_sigcontext(&frame->sc, env, set->sig[0]);
+ if (err)
+ goto give_sigsegv;
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ if (__put_user(set->sig[i], &frame->extramask[i - 1]))
+ goto give_sigsegv;
+ }
+
+ /* Set up to return from userspace. */
+
+ retcode_addr = frame_addr + offsetof(struct target_sigframe, retcode);
+ err |= __put_user(retcode_addr, &frame->pretcode);
+
+ /* moveq #,d0; trap #0 */
+
+ err |= __put_user(0x70004e40 + (TARGET_NR_sigreturn << 16),
+ (long *)(frame->retcode));
+
+ if (err)
+ goto give_sigsegv;
+
+ /* Set up to return from userspace */
+
+ env->aregs[7] = frame_addr;
+ env->pc = ka->_sa_handler;
+
+ unlock_user_struct(frame, frame_addr, 1);
+ return;
+
+give_sigsegv:
+ unlock_user_struct(frame, frame_addr, 1);
+ force_sig(SIGSEGV);
+}
+
+static void setup_rt_frame(int sig, struct target_sigaction *ka,
+ target_siginfo_t *info,
+ target_sigset_t *set, CPUState *env)
+{
+ fprintf(stderr, "setup_rt_frame: not implemented\n");
+}
+
+long do_sigreturn(CPUState *env)
+{
+ struct target_sigframe *frame;
+ abi_ulong frame_addr = env->aregs[7] - 4;
+ target_sigset_t target_set;
+ sigset_t set;
+ int d0, i;
+
+ if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
+ goto badframe;
+
+ /* set blocked signals */
+
+ if (__get_user(target_set.sig[0], &frame->sc.sc_mask))
+ goto badframe;
+
+ for(i = 1; i < TARGET_NSIG_WORDS; i++) {
+ if (__get_user(target_set.sig[i], &frame->extramask[i - 1]))
+ goto badframe;
+ }
+
+ target_to_host_sigset_internal(&set, &target_set);
+ sigprocmask(SIG_SETMASK, &set, NULL);
+
+ /* restore registers */
+
+ if (restore_sigcontext(env, &frame->sc, &d0))
+ goto badframe;
+
+ unlock_user_struct(frame, frame_addr, 0);
+ return d0;
+
+badframe:
+ unlock_user_struct(frame, frame_addr, 0);
+ force_sig(TARGET_SIGSEGV);
+ return 0;
+}
+
+long do_rt_sigreturn(CPUState *env)
+{
+ fprintf(stderr, "do_rt_sigreturn: not implemented\n");
+ return -TARGET_ENOSYS;
+}
+
#else
static void setup_frame(int sig, struct target_sigaction *ka,