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111
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1 /* -----------------------------------------------------------------------
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2 ffi_common.h - Copyright (C) 2011, 2012, 2013 Anthony Green
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3 Copyright (C) 2007 Free Software Foundation, Inc
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4 Copyright (c) 1996 Red Hat, Inc.
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5
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6 Common internal definitions and macros. Only necessary for building
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7 libffi.
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8 ----------------------------------------------------------------------- */
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9
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10 #ifndef FFI_COMMON_H
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11 #define FFI_COMMON_H
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12
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13 #ifdef __cplusplus
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14 extern "C" {
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15 #endif
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16
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17 #include <fficonfig.h>
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18
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19 /* Do not move this. Some versions of AIX are very picky about where
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20 this is positioned. */
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21 #ifdef __GNUC__
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22 # if HAVE_ALLOCA_H
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23 # include <alloca.h>
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24 # else
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25 /* mingw64 defines this already in malloc.h. */
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26 # ifndef alloca
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27 # define alloca __builtin_alloca
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28 # endif
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29 # endif
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30 # define MAYBE_UNUSED __attribute__((__unused__))
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31 #else
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32 # define MAYBE_UNUSED
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33 # if HAVE_ALLOCA_H
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34 # include <alloca.h>
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35 # else
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36 # ifdef _AIX
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37 # pragma alloca
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38 # else
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39 # ifndef alloca /* predefined by HP cc +Olibcalls */
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40 # ifdef _MSC_VER
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41 # define alloca _alloca
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42 # else
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43 char *alloca ();
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44 # endif
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45 # endif
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46 # endif
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47 # endif
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48 #endif
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49
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50 /* Check for the existence of memcpy. */
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51 #if STDC_HEADERS
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52 # include <string.h>
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53 #else
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54 # ifndef HAVE_MEMCPY
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55 # define memcpy(d, s, n) bcopy ((s), (d), (n))
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56 # endif
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57 #endif
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58
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59 #if defined(FFI_DEBUG)
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60 #include <stdio.h>
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61 #endif
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62
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63 #ifdef FFI_DEBUG
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64 void ffi_assert(char *expr, char *file, int line);
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65 void ffi_stop_here(void);
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66 void ffi_type_test(ffi_type *a, char *file, int line);
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67
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68 #define FFI_ASSERT(x) ((x) ? (void)0 : ffi_assert(#x, __FILE__,__LINE__))
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69 #define FFI_ASSERT_AT(x, f, l) ((x) ? 0 : ffi_assert(#x, (f), (l)))
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70 #define FFI_ASSERT_VALID_TYPE(x) ffi_type_test (x, __FILE__, __LINE__)
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71 #else
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72 #define FFI_ASSERT(x)
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73 #define FFI_ASSERT_AT(x, f, l)
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74 #define FFI_ASSERT_VALID_TYPE(x)
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75 #endif
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76
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77 #define ALIGN(v, a) (((((size_t) (v))-1) | ((a)-1))+1)
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78 #define ALIGN_DOWN(v, a) (((size_t) (v)) & -a)
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79
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80 /* Perform machine dependent cif processing */
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81 ffi_status ffi_prep_cif_machdep(ffi_cif *cif);
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82 ffi_status ffi_prep_cif_machdep_var(ffi_cif *cif,
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83 unsigned int nfixedargs, unsigned int ntotalargs);
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84
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85 /* Extended cif, used in callback from assembly routine */
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86 typedef struct
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87 {
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88 ffi_cif *cif;
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89 void *rvalue;
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90 void **avalue;
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91 } extended_cif;
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92
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93 /* Terse sized type definitions. */
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94 #if defined(_MSC_VER) || defined(__sgi) || defined(__SUNPRO_C)
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95 typedef unsigned char UINT8;
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96 typedef signed char SINT8;
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97 typedef unsigned short UINT16;
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98 typedef signed short SINT16;
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99 typedef unsigned int UINT32;
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100 typedef signed int SINT32;
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101 # ifdef _MSC_VER
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102 typedef unsigned __int64 UINT64;
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103 typedef signed __int64 SINT64;
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104 # else
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105 # include <inttypes.h>
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106 typedef uint64_t UINT64;
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107 typedef int64_t SINT64;
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108 # endif
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109 #else
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110 typedef unsigned int UINT8 __attribute__((__mode__(__QI__)));
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111 typedef signed int SINT8 __attribute__((__mode__(__QI__)));
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112 typedef unsigned int UINT16 __attribute__((__mode__(__HI__)));
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113 typedef signed int SINT16 __attribute__((__mode__(__HI__)));
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114 typedef unsigned int UINT32 __attribute__((__mode__(__SI__)));
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115 typedef signed int SINT32 __attribute__((__mode__(__SI__)));
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116 typedef unsigned int UINT64 __attribute__((__mode__(__DI__)));
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117 typedef signed int SINT64 __attribute__((__mode__(__DI__)));
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118 #endif
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119
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120 typedef float FLOAT32;
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121
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122 #ifndef __GNUC__
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123 #define __builtin_expect(x, expected_value) (x)
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124 #endif
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125 #define LIKELY(x) __builtin_expect(!!(x),1)
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126 #define UNLIKELY(x) __builtin_expect((x)!=0,0)
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127
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128 #ifdef __cplusplus
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129 }
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130 #endif
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131
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132 #endif
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