libffi/include/ffi_common.h

   1 /* -----------------------------------------------------------------------
   2    ffi_common.h - Copyright (c) 1996  Red Hat, Inc.
   3
   4    Common internal definitions and macros. Only necessary for building
   5    libffi.
   6    ----------------------------------------------------------------------- */
   7
   8 #ifndef FFI_COMMON_H
   9 #define FFI_COMMON_H
  10
  11 #ifdef __cplusplus
  12 extern "C" {
  13 #endif
  14
  15 #include <fficonfig.h>
  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 #if defined(FFI_DEBUG)
  45 #include <stdio.h>
  46 #endif
  47
  48 #ifdef FFI_DEBUG
  49 void ffi_assert(char *expr, char *file, int line);
  50 void ffi_stop_here(void);
  51 void ffi_type_test(ffi_type *a, char *file, int line);
  52
  53 #define FFI_ASSERT(x) ((x) ? (void)0 : ffi_assert(#x, __FILE__,__LINE__))
  54 #define FFI_ASSERT_AT(x, f, l) ((x) ? 0 : ffi_assert(#x, (f), (l)))
  55 #define FFI_ASSERT_VALID_TYPE(x) ffi_type_test (x, __FILE__, __LINE__)
  56 #else
  57 #define FFI_ASSERT(x)
  58 #define FFI_ASSERT_AT(x, f, l)
  59 #define FFI_ASSERT_VALID_TYPE(x)
  60 #endif
  61
  62 #define ALIGN(v, a)  (((((size_t) (v))-1) | ((a)-1))+1)
  63 #define ALIGN_DOWN(v, a) (((size_t) (v)) & -a)
  64
  65 /* Perform machine dependent cif processing */
  66 ffi_status ffi_prep_cif_machdep(ffi_cif *cif);
  67
  68 /* Extended cif, used in callback from assembly routine */
  69 typedef struct
  70 {
  71   ffi_cif *cif;
  72   void *rvalue;
  73   void **avalue;
  74 } extended_cif;
  75
  76 /* Terse sized type definitions.  */
  77 typedef unsigned int UINT8  __attribute__((__mode__(__QI__)));
  78 typedef signed int   SINT8  __attribute__((__mode__(__QI__)));
  79 typedef unsigned int UINT16 __attribute__((__mode__(__HI__)));
  80 typedef signed int   SINT16 __attribute__((__mode__(__HI__)));
  81 typedef unsigned int UINT32 __attribute__((__mode__(__SI__)));
  82 typedef signed int   SINT32 __attribute__((__mode__(__SI__)));
  83 typedef unsigned int UINT64 __attribute__((__mode__(__DI__)));
  84 typedef signed int   SINT64 __attribute__((__mode__(__DI__)));
  85
  86 typedef float FLOAT32;
  87
  88
  89 #ifdef __cplusplus
  90 }
  91 #endif
  92
  93 #endif
  94
  95