/* Copyright (C) 2012 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 2011 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 2003 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 2001 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 1999 DJ Delorie, see COPYING.DJ for details */
/* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
#ifndef __dj_include_setjmp_h_
#define __dj_include_setjmp_h_

#ifdef __cplusplus
namespace std {
  extern "C" {
#endif

#ifndef __dj_ENFORCE_ANSI_FREESTANDING

typedef struct __jmp_buf {
  void *buf[5];
  volatile int rc;
} jmp_buf[1];

__attribute__((noreturn))
static inline void longjmp(jmp_buf env, int val)
{
  env[0].rc = val;
  __builtin_longjmp(env[0].buf, 1);
}

#define setjmp(env) ( \
{ \
  int _rc = __builtin_setjmp(env[0].buf); \
  (_rc ? env[0].rc : 0); \
})

#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \
  || !defined(__STRICT_ANSI__) || defined(__cplusplus)

#endif /* (__STDC_VERSION__ >= 199901L) || !__STRICT_ANSI__ */

#ifndef __STRICT_ANSI__
#if 0
typedef jmp_buf sigjmp_buf;

int	sigsetjmp(sigjmp_buf env, int savemask);
void	siglongjmp(sigjmp_buf env, int val) __attribute__((__noreturn__));
#endif
#ifndef _POSIX_SOURCE

#endif /* !_POSIX_SOURCE */
#endif /* !__STRICT_ANSI__ */
#endif /* !__dj_ENFORCE_ANSI_FREESTANDING */

#ifndef __dj_ENFORCE_FUNCTION_CALLS
#endif /* !__dj_ENFORCE_FUNCTION_CALLS */

#ifdef __cplusplus
  }
}
#endif

#endif /* !__dj_include_setjmp_h_ */


#if defined(__cplusplus) && !defined(__dj_ENFORCE_ANSI_FREESTANDING)

using std::setjmp;

#ifndef __dj_via_cplusplus_header_

using std::longjmp;
using std::jmp_buf;

#ifndef __STRICT_ANSI__

using std::sigjmp_buf;
using std::sigsetjmp;
using std::siglongjmp;

#endif /* !__STRICT_ANSI__ */
#endif /* !__dj_via_cplusplus_header_ */
#endif /* __cplusplus && !__dj_ENFORCE_ANSI_FREESTANDING */