tstolen from freebsd; maybe work on openbsd? - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
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---
(DIR) commit 1041ea6f68276d65c3426df3ee3a6c5a396ab704
(DIR) parent ceb21b8a90da680a6795fa49cc5744244f2d002a
(HTM) Author: rsc <devnull@localhost>
Date: Tue, 19 Jul 2005 11:43:01 +0000
stolen from freebsd; maybe work on openbsd?
Diffstat:
A src/libthread/386-ucontext.h | 118 +++++++++++++++++++++++++++++++
1 file changed, 118 insertions(+), 0 deletions(-)
---
(DIR) diff --git a/src/libthread/386-ucontext.h b/src/libthread/386-ucontext.h
t@@ -0,0 +1,118 @@
+
+
+extern int getcontext(ucontext_t*);
+extern void setcontext(ucontext_t*);
+extern int swapcontext(ucontext_t*, ucontext_t*);
+extern void makecontext(ucontext_t*, void(*)(), int, ...);
+
+/*-
+ * 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: src/sys/sys/ucontext.h,v 1.4 1999/10/11 20:33:17 luoqi Exp $
+ */
+
+/* #include <machine/ucontext.h> */
+
+/*-
+ * 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: src/sys/i386/include/ucontext.h,v 1.4 1999/10/11 20:33:09 luoqi Exp $
+ */
+
+typedef struct __mcontext {
+ /*
+ * The first 20 fields must match the definition of
+ * sigcontext. So that we can support sigcontext
+ * and ucontext_t at the same time.
+ */
+ int mc_onstack; /* XXX - sigcontext compat. */
+ int mc_gs;
+ int mc_fs;
+ int mc_es;
+ int mc_ds;
+ int mc_edi;
+ int mc_esi;
+ int mc_ebp;
+ int mc_isp;
+ int mc_ebx;
+ int mc_edx;
+ int mc_ecx;
+ int mc_eax;
+ int mc_trapno;
+ int mc_err;
+ int mc_eip;
+ int mc_cs;
+ int mc_eflags;
+ int mc_esp; /* machine state */
+ int mc_ss;
+
+ int mc_fpregs[28]; /* env87 + fpacc87 + u_long */
+ int __spare__[17];
+} mcontext_t;
+
+typedef struct __ucontext {
+ /*
+ * Keep the order of the first two fields. Also,
+ * keep them the first two fields in the structure.
+ * This way we can have a union with struct
+ * sigcontext and ucontext_t. This allows us to
+ * support them both at the same time.
+ * note: the union is not defined, though.
+ */
+ sigset_t uc_sigmask;
+ mcontext_t uc_mcontext;
+
+ struct __ucontext *uc_link;
+ stack_t uc_stack;
+ int __spare__[8];
+} ucontext_t;
+
+