payloads/libpayload/include/stdarg.h

   1 /*
   2  *
   3  * Copyright (C) 2008 Advanced Micro Devices, Inc.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #ifndef _LIBPAYLOAD_STDARG_H
  30 #define _LIBPAYLOAD_STDARG_H
  31
  32 #include <stddef.h>
  33
  34 /* With GCC we use -nostdinc -ffreestanding to keep out system includes.
  35  * Unfortunately this also gets us rid of the _compiler_ includes, like
  36  * stdarg.h. To work around the issue, we define varargs directly here.
  37  * On LLVM we can still just include stdarg.h.
  38  */
  39 #ifdef __GNUC__
  40 #define va_start(v,l)           __builtin_va_start(v,l)
  41 #define va_end(v)               __builtin_va_end(v)
  42 #define va_arg(v,l)             __builtin_va_arg(v,l)
  43 #define va_copy(d,s)            __builtin_va_copy(d,s)
  44 typedef __builtin_va_list       va_list;
  45 #else
  46 #include_next <stdarg.h>
  47 #endif
  48
  49 /**
  50  * @defgroup vprintf Varargs print functions
  51  * @{
  52  */
  53 int vsnprintf(char *str, size_t size, const char *fmt, va_list ap);
  54 int vsprintf(char *str, const char *fmt, va_list ap);
  55 int vprintf(const char *fmt, va_list ap);
  56 /** @} */
  57
  58 #endif