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+/*-
+ * Copyright (c) 1999 Marcel Moolenaar
+ * 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
+ * in this position and unchanged.
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_SIGFRAME_H_
+#define _MACHINE_SIGFRAME_H_ 1
+
+struct osigframe {
+ /*
+ * The first three members may be used by applications.
+ */
+
+ register_t sf_signum;
+
+ /*
+ * Either 'int' for old-style FreeBSD handler or 'siginfo_t *'
+ * pointing to sf_siginfo for SA_SIGINFO handlers.
+ */
+ register_t sf_arg2;
+
+ /* Points to sf_siginfo.si_sc. */
+ register_t sf_scp;
+
+ /*
+ * The following arguments are not constrained by the
+ * function call protocol.
+ * Applications are not supposed to access these members,
+ * except using the pointers we provide in the first three
+ * arguments.
+ */
+
+ char *sf_addr;
+
+ union {
+ __osiginfohandler_t *sf_action;
+ __sighandler_t *sf_handler;
+ } sf_ahu;
+
+ /* In the SA_SIGINFO case, sf_arg2 points here. */
+ osiginfo_t sf_siginfo;
+};
+
+struct sigframe {
+ /*
+ * The first three members may be used by applications.
+ */
+ register_t sf_signum;
+ register_t sf_siginfo; /* code or pointer to sf_si */
+ register_t sf_ucontext; /* points to sf_uc */
+ register_t __spare__; /* Align sf_ahu */
+ union {
+ __siginfohandler_t *sf_action;
+ __sighandler_t *sf_handler;
+ } sf_ahu;
+ register_t sf_sigreturn; /* sigreturn to use */
+ siginfo_t sf_si; /* = *sf_siginfo (SA_SIGINFO case) */
+ ucontext_t sf_uc; /* = *sf_ucontext */
+};
+
+#endif /* _MACHINE_SIGFRAME_H_ */
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