libffi/include/ffi_common.h

   1 /* -----------------------------------------------------------------------
   2    ffi_common.h - Copyright (c) 1996  Cygnus Solutions
   3
   4    $Id: ffi_common.h,v 1.1.1.1 1998/11/29 16:48:16 green Exp $
   5
   6    Common internal definitions and macros. Only necessary for building
   7    libffi.
   8    ----------------------------------------------------------------------- */
   9
  10 #ifndef FFI_COMMON_H
  11 #define FFI_COMMON_H
  12
  13 #ifdef __cplusplus
  14 extern "C" {
  15 #endif
  16
  17 /* Do not move this. Some versions of AIX are very picky about where
  18    this is positioned. */
  19 #ifdef __GNUC__
  20 # define alloca __builtin_alloca
  21 #else
  22 # if HAVE_ALLOCA_H
  23 #  include <alloca.h>
  24 # else
  25 #  ifdef _AIX
  26  #pragma alloca
  27 #  else
  28 #   ifndef alloca /* predefined by HP cc +Olibcalls */
  29 char *alloca ();
  30 #   endif
  31 #  endif
  32 # endif
  33 #endif
  34
  35 /* Check for the existence of memcpy. */
  36 #if STDC_HEADERS
  37 # include <string.h>
  38 #else
  39 # ifndef HAVE_MEMCPY
  40 #  define memcpy(d, s, n) bcopy ((s), (d), (n))
  41 # endif
  42 #endif
  43
  44 #ifndef FALSE
  45 #define FALSE 0
  46 #endif
  47
  48 #ifndef TRUE
  49 #define TRUE (!FALSE)
  50 #endif
  51
  52 #ifndef __cplusplus
  53 /* bool is a keyword in C++ */
  54 /*@-cppnames@*/
  55 typedef int bool;
  56 /*@=cppnames@*/
  57 #endif
  58
  59 #ifdef FFI_DEBUG
  60
  61 /* Debugging functions */
  62 /*@exits@*/ int ffi_assert(/*@temp@*/ char *file, int line);
  63 void ffi_stop_here(void);
  64 bool ffi_type_test(/*@temp@*/ /*@out@*/ ffi_type *a);
  65
  66 #define FFI_ASSERT(x) ((x) ? 0 : ffi_assert(__FILE__,__LINE__))
  67
  68 #else
  69
  70 #define FFI_ASSERT(x)
  71
  72 #endif
  73
  74 /* Perform machine dependent cif processing */
  75 ffi_status ffi_prep_cif_machdep(ffi_cif *cif);
  76
  77 /* Extended cif, used in callback from assembly routine */
  78 typedef struct
  79 {
  80   /*@dependent@*/ ffi_cif *cif;
  81   /*@dependent@*/ void *rvalue;
  82   /*@dependent@*/ void **avalue;
  83 } extended_cif;
  84
  85 #ifdef __cplusplus
  86 }
  87 #endif
  88
  89 #endif
  90
  91