libffi/include/ffi_common.h

   1 /* -----------------------------------------------------------------------
   2    ffi_common.h - Copyright (C) 2011, 2012  Anthony Green
   3                   Copyright (C) 2007  Free Software Foundation, Inc
   4                   Copyright (c) 1996  Red Hat, Inc.
   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 #include <fficonfig.h>
  18
  19 /* Do not move this. Some versions of AIX are very picky about where
  20    this is positioned. */
  21 #ifdef __GNUC__
  22 /* mingw64 defines this already in malloc.h. */
  23 #ifndef alloca
  24 # define alloca __builtin_alloca
  25 #endif
  26 # define MAYBE_UNUSED __attribute__((__unused__))
  27 #else
  28 # define MAYBE_UNUSED
  29 # if HAVE_ALLOCA_H
  30 #  include <alloca.h>
  31 # else
  32 #  ifdef _AIX
  33  #pragma alloca
  34 #  else
  35 #   ifndef alloca /* predefined by HP cc +Olibcalls */
  36 #    ifdef _MSC_VER
  37 #     define alloca _alloca
  38 #    else
  39 char *alloca ();
  40 #    endif
  41 #   endif
  42 #  endif
  43 # endif
  44 #endif
  45
  46 /* Check for the existence of memcpy. */
  47 #if STDC_HEADERS
  48 # include <string.h>
  49 #else
  50 # ifndef HAVE_MEMCPY
  51 #  define memcpy(d, s, n) bcopy ((s), (d), (n))
  52 # endif
  53 #endif
  54
  55 #if defined(FFI_DEBUG)
  56 #include <stdio.h>
  57 #endif
  58
  59 #ifdef FFI_DEBUG
  60 void ffi_assert(char *expr, char *file, int line);
  61 void ffi_stop_here(void);
  62 void ffi_type_test(ffi_type *a, char *file, int line);
  63
  64 #define FFI_ASSERT(x) ((x) ? (void)0 : ffi_assert(#x, __FILE__,__LINE__))
  65 #define FFI_ASSERT_AT(x, f, l) ((x) ? 0 : ffi_assert(#x, (f), (l)))
  66 #define FFI_ASSERT_VALID_TYPE(x) ffi_type_test (x, __FILE__, __LINE__)
  67 #else
  68 #define FFI_ASSERT(x)
  69 #define FFI_ASSERT_AT(x, f, l)
  70 #define FFI_ASSERT_VALID_TYPE(x)
  71 #endif
  72
  73 #define ALIGN(v, a)  (((((size_t) (v))-1) | ((a)-1))+1)
  74 #define ALIGN_DOWN(v, a) (((size_t) (v)) & -a)
  75
  76 /* Perform machine dependent cif processing */
  77 ffi_status ffi_prep_cif_machdep(ffi_cif *cif);
  78 ffi_status ffi_prep_cif_machdep_var(ffi_cif *cif,
  79          unsigned int nfixedargs, unsigned int ntotalargs);
  80
  81 /* Extended cif, used in callback from assembly routine */
  82 typedef struct
  83 {
  84   ffi_cif *cif;
  85   void *rvalue;
  86   void **avalue;
  87 } extended_cif;
  88
  89 /* Terse sized type definitions.  */
  90 #if defined(_MSC_VER) || defined(__sgi)
  91 typedef unsigned char UINT8;
  92 typedef signed char   SINT8;
  93 typedef unsigned short UINT16;
  94 typedef signed short   SINT16;
  95 typedef unsigned int UINT32;
  96 typedef signed int   SINT32;
  97 # ifdef _MSC_VER
  98 typedef unsigned __int64 UINT64;
  99 typedef signed __int64   SINT64;
 100 # else
 101 # include <inttypes.h>
 102 typedef uint64_t UINT64;
 103 typedef int64_t  SINT64;
 104 # endif
 105 #else
 106 typedef unsigned int UINT8  __attribute__((__mode__(__QI__)));
 107 typedef signed int   SINT8  __attribute__((__mode__(__QI__)));
 108 typedef unsigned int UINT16 __attribute__((__mode__(__HI__)));
 109 typedef signed int   SINT16 __attribute__((__mode__(__HI__)));
 110 typedef unsigned int UINT32 __attribute__((__mode__(__SI__)));
 111 typedef signed int   SINT32 __attribute__((__mode__(__SI__)));
 112 typedef unsigned int UINT64 __attribute__((__mode__(__DI__)));
 113 typedef signed int   SINT64 __attribute__((__mode__(__DI__)));
 114 #endif
 115
 116 typedef float FLOAT32;
 117
 118 #ifndef __GNUC__
 119 #define __builtin_expect(x, expected_value) (x)
 120 #endif
 121 #define LIKELY(x)    __builtin_expect(!!(x),1)
 122 #define UNLIKELY(x)  __builtin_expect((x)!=0,0)
 123
 124 #ifdef __cplusplus
 125 }
 126 #endif
 127
 128 #endif