1 files changed, 77 insertions, 0 deletions
diff --git a/lib/libc/sparc64/gen/signalcontext.c b/lib/libc/sparc64/gen/signalcontext.c
new file mode 100644
index 0000000..622f36f
--- /dev/null
+++ b/lib/libc/sparc64/gen/signalcontext.c
@@ -0,0 +1,77 @@
+/*-
+ * Copyright (c) 2003 Jake Burkholder.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/ucontext.h>
+
+#include <machine/frame.h>
+#include <machine/sigframe.h>
+
+#include <errno.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <unistd.h>
+
+__weak_reference(__signalcontext, signalcontext);
+
+extern void _ctx_start(void);
+
+int
+__signalcontext(ucontext_t *ucp, int sig, __sighandler_t *func)
+{
+	struct sigframe *sfp;
+	struct frame *fp;
+	mcontext_t *mc;
+
+	mc = &ucp->uc_mcontext;
+	sfp = (struct sigframe *)(mc->mc_sp + SPOFF) - 1;
+	fp = (struct frame *)sfp - 1;
+
+	bzero(fp, sizeof(*fp));
+
+	bzero(sfp, sizeof(*sfp));
+	bcopy(ucp, &sfp->sf_uc, sizeof(*ucp));
+	sfp->sf_si.si_signo = sig;
+
+	mc->mc_global[1] = (uint64_t)func;
+	mc->mc_global[2] = (uint64_t)ucp;
+	mc->mc_out[0] = sig;
+	mc->mc_out[1] = (uint64_t)&sfp->sf_si;
+	mc->mc_out[2] = (uint64_t)&sfp->sf_uc;
+	mc->mc_out[6] = (uint64_t)fp - SPOFF;
+	mc->mc_tnpc = (uint64_t)_ctx_start + 4;
+	mc->mc_tpc = (uint64_t)_ctx_start;
+
+	ucp->uc_link = &sfp->sf_uc;
+	sigdelset(&ucp->uc_sigmask, sig);
+
+	return (0);
+}