#   		 Crown Copyright (c) 1997
#
#   This TenDRA(r) Computer Program is subject to Copyright
#   owned by the United Kingdom Secretary of State for Defence
#   acting through the Defence Evaluation and Research Agency
#   (DERA).  It is made available to Recipients with a
#   royalty-free licence for its use, reproduction, transfer
#   to other parties and amendment for any purpose not excluding
#   product development provided that any such use et cetera
#   shall be deemed to be acceptance of the following conditions:-
#
#       (1) Its Recipients shall ensure that this Notice is
#       reproduced upon any copies or amended versions of it;
#
#       (2) Any amended version of it shall be clearly marked to
#       show both the nature of and the organisation responsible
#       for the relevant amendment or amendments;
#
#       (3) Its onward transfer from a recipient to another
#       party shall be deemed to be that party's acceptance of
#       these conditions;
#
#       (4) DERA gives no warranty or assurance as to its
#       quality or suitability for any purpose and DERA accepts
#       no liability whatsoever in relation to any use to which
#       it may be put.
#
# $TenDRA: tendra/src/lib/apis/unix95/ucontext.h,v 1.2 2005/10/31 08:41:47 stefanf Exp $
#


+SUBSET "sig" := {
    # for unix95:signal.h
    +USE "unix95", "sys/types.h";

    +IMPLEMENT "posix", "signal.h", "sigset_t";

    +TYPE mcontext_t;

    +FIELD (struct) stack_t {
	void *ss_sp;
	size_t ss_size;
	int ss_flags;
    };

    +FIELD (struct) ucontext_t {
	ucontext_t *uc_link;
	sigset_t uc_sigmask;
	stack_t uc_stack;
	mcontext_t uc_mcontext;
    };
};

+FUNC int getcontext(ucontext_t *);
+FUNC int setcontext(const ucontext_t *);
+FUNC void makecontext(ucontext_t *, void (*) (int), int, ...);
+FUNC int swapcontext(ucontext_t *, const ucontext_t *);
