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119 lines
4.4 KiB
119 lines
4.4 KiB
5 years ago
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/* setjmp.h: ANSI 'C' (X3J11 Oct 88) library header, section 4.6 */
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/* Copyright (C) ARM Ltd., 1999
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* All rights reserved
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* RCS $Revision: 179217 $
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* Checkin $Date: 2013-03-12 14:03:19 +0000 (Tue, 12 Mar 2013) $
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* Revising $Author: drodgman $
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*/
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/* Copyright (C) Codemist Ltd., 1988 */
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/* Copyright 1991 ARM Limited. All rights reserved. */
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/*
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* setjmp.h declares two functions and one type, for bypassing the normal
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* function call and return discipline (useful for dealing with unusual
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* conditions encountered in a low-level function of a program).
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*/
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#ifndef __setjmp_h
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#define __setjmp_h
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#define __ARMCLIB_VERSION 5050106
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/*
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* Depending on compiler version __int64 or __INT64_TYPE__ should be defined.
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*/
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#ifndef __int64
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#ifdef __INT64_TYPE__
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#define __int64 __INT64_TYPE__
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#endif
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/* On some architectures neither of these may be defined - if so, fall
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through and error out if used. */
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#endif
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#define _ARMABI __declspec(__nothrow)
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#define _ARMABI_NORETURN __declspec(__nothrow) __declspec(__noreturn)
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#ifndef __SETJMP_DECLS
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#define __SETJMP_DECLS
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#undef __CLIBNS
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#ifdef __cplusplus
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namespace std {
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#define __CLIBNS std::
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extern "C" {
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#else
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#define __CLIBNS
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#endif /* __cplusplus */
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#if _AEABI_PORTABILITY_LEVEL != 0 || (!defined _AEABI_PORTABILITY_LEVEL && __DEFAULT_AEABI_PORTABILITY_LEVEL != 0)
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typedef __int64 jmp_buf[]; /* do not specify size at all */
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#else
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typedef __int64 jmp_buf[48]; /* size as defined in the ATEPCS */
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/* an array type suitable for holding the data */
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/* needed to restore a calling environment. */
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#endif
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extern const int __aeabi_JMP_BUF_SIZE;
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/* setjmp is a macro so that it cannot be used other than directly called. */
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/* NB that ANSI declare that anyone who undefines the setjmp macro or uses */
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/* (or defines) the name setjmp without including this header will get */
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/* what they deserve. In addition, C++ requires setjmp to be a macro. */
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extern _ARMABI int setjmp(jmp_buf /*env*/) __attribute__((__nonnull__(1)));
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/* Saves its calling environment in its jmp_buf argument, for later use
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* by the longjmp function.
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* Returns: If the return is from a direct invocation, the setjmp function
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* returns the value zero. If the return from a call to the longjmp
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* function, the setjmp function returns a non zero value.
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*/
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#define setjmp(jmp_buf) (__CLIBNS setjmp(jmp_buf))
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extern _ARMABI_NORETURN void longjmp(jmp_buf /*env*/, int /*val*/) __attribute__((__nonnull__(1)));
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/* Restores the environment saved by the most recent call to setjmp in the
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* same invocation of the program, with the corresponding jmp_buf argument.
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* If there has been no such call, or if the function containing the call
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* to setjmp has terminated execution (eg. with a return statement) in the
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* interim, the behaviour is undefined.
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* All accessible objects have values as of the time longjmp was called,
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* except that the values of objects of automatic storage duration that do
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* not have volatile type and have been changed between the setjmp and
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* longjmp calls are indeterminate.
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* As it bypasses the usual function call and return mechanism, the longjmp
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* function shall execute correctly in contexts of interrupts, signals and
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* any of their associated functions. However, if the longjmp function is
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* invoked from a nested signal handler (that is, from a function invoked as
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* a result of a signal raised during the handling of another signal), the
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* behaviour is undefined.
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* Returns: After longjmp is completed, program execution continues as if
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* the corresponding call to setjmp had just returned the value
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* specified by val. The longjmp function cannot cause setjmp to
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* return the value 0; if val is 0, setjmp returns the value 1.
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*/
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#ifdef __cplusplus
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} /* extern "C" */
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} /* namespace std */
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#endif /* __cplusplus */
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#endif /* __SETJMP_DECLS */
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#if _AEABI_PORTABILITY_LEVEL != 0 && !defined _AEABI_PORTABLE
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#define _AEABI_PORTABLE
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#endif
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#ifdef __cplusplus
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#ifndef __SETJMP_NO_EXPORTS
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using ::std::jmp_buf;
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using ::std::setjmp;
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using ::std::longjmp;
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using ::std::__aeabi_JMP_BUF_SIZE;
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#endif
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#endif /* __cplusplus */
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#endif
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/* end of setjmp.h */
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