libffi/include/ffi_common.h

   1 /* -----------------------------------------------------------------------
   2    ffi_common.h - Copyright (c) 1996  Red Hat, Inc.
   3    Copyright (C) 2007 Free Software Foundation, Inc
   4
   5    Common internal definitions and macros. Only necessary for building
   6    libffi.
   7    ----------------------------------------------------------------------- */
   8
   9 #ifndef FFI_COMMON_H
  10 #define FFI_COMMON_H
  11
  12 #ifdef __cplusplus
  13 extern "C" {
  14 #endif
  15
  16 #include <fficonfig.h>
  17
  18 /* Do not move this. Some versions of AIX are very picky about where
  19    this is positioned. */
  20 #ifdef __GNUC__
  21 # define alloca __builtin_alloca
  22 # define MAYBE_UNUSED __attribute__((__unused__))
  23 #else
  24 # define MAYBE_UNUSED
  25 # if HAVE_ALLOCA_H
  26 #  include <alloca.h>
  27 # else
  28 #  ifdef _AIX
  29  #pragma alloca
  30 #  else
  31 #   ifndef alloca /* predefined by HP cc +Olibcalls */
  32 char *alloca ();
  33 #   endif
  34 #  endif
  35 # endif
  36 #endif
  37
  38 /* Check for the existence of memcpy. */
  39 #if STDC_HEADERS
  40 # include <string.h>
  41 #else
  42 # ifndef HAVE_MEMCPY
  43 #  define memcpy(d, s, n) bcopy ((s), (d), (n))
  44 # endif
  45 #endif
  46
  47 #if defined(FFI_DEBUG)
  48 #include <stdio.h>
  49 #endif
  50
  51 #ifdef FFI_DEBUG
  52 void ffi_assert(char *expr, char *file, int line);
  53 void ffi_stop_here(void);
  54 void ffi_type_test(ffi_type *a, char *file, int line);
  55
  56 #define FFI_ASSERT(x) ((x) ? (void)0 : ffi_assert(#x, __FILE__,__LINE__))
  57 #define FFI_ASSERT_AT(x, f, l) ((x) ? 0 : ffi_assert(#x, (f), (l)))
  58 #define FFI_ASSERT_VALID_TYPE(x) ffi_type_test (x, __FILE__, __LINE__)
  59 #else
  60 #define FFI_ASSERT(x)
  61 #define FFI_ASSERT_AT(x, f, l)
  62 #define FFI_ASSERT_VALID_TYPE(x)
  63 #endif
  64
  65 #define ALIGN(v, a)  (((((size_t) (v))-1) | ((a)-1))+1)
  66 #define ALIGN_DOWN(v, a) (((size_t) (v)) & -a)
  67
  68 /* Perform machine dependent cif processing */
  69 ffi_status ffi_prep_cif_machdep(ffi_cif *cif);
  70
  71 /* Extended cif, used in callback from assembly routine */
  72 typedef struct
  73 {
  74   ffi_cif *cif;
  75   void *rvalue;
  76   void **avalue;
  77 } extended_cif;
  78
  79 /* Terse sized type definitions.  */
  80 typedef unsigned int UINT8  __attribute__((__mode__(__QI__)));
  81 typedef signed int   SINT8  __attribute__((__mode__(__QI__)));
  82 typedef unsigned int UINT16 __attribute__((__mode__(__HI__)));
  83 typedef signed int   SINT16 __attribute__((__mode__(__HI__)));
  84 typedef unsigned int UINT32 __attribute__((__mode__(__SI__)));
  85 typedef signed int   SINT32 __attribute__((__mode__(__SI__)));
  86 typedef unsigned int UINT64 __attribute__((__mode__(__DI__)));
  87 typedef signed int   SINT64 __attribute__((__mode__(__DI__)));
  88
  89 typedef float FLOAT32;
  90
  91
  92 #ifdef __cplusplus
  93 }
  94 #endif
  95
  96 #endif
  97
  98