494 lines
13 KiB
C
494 lines
13 KiB
C
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/* -----------------------------------------------------------------*-C-*-
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libffi 3.2.1 - Copyright (c) 2011, 2014 Anthony Green
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- Copyright (c) 1996-2003, 2007, 2008 Red Hat, Inc.
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the ``Software''), to deal in the Software without
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restriction, including without limitation the rights to use, copy,
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modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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/* -------------------------------------------------------------------
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The basic API is described in the README file.
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The raw API is designed to bypass some of the argument packing
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and unpacking on architectures for which it can be avoided.
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The closure API allows interpreted functions to be packaged up
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inside a C function pointer, so that they can be called as C functions,
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with no understanding on the client side that they are interpreted.
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It can also be used in other cases in which it is necessary to package
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up a user specified parameter and a function pointer as a single
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function pointer.
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The closure API must be implemented in order to get its functionality,
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e.g. for use by gij. Routines are provided to emulate the raw API
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if the underlying platform doesn't allow faster implementation.
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More details on the raw and cloure API can be found in:
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http://gcc.gnu.org/ml/java/1999-q3/msg00138.html
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and
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http://gcc.gnu.org/ml/java/1999-q3/msg00174.html
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-------------------------------------------------------------------- */
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#ifndef LIBFFI_H
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#define LIBFFI_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Specify which architecture libffi is configured for. */
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#ifdef _WIN64
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#ifndef X86_WIN64
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#define X86_WIN64
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#endif
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#else
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#ifndef X86_WIN32
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#define X86_WIN32
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#endif
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#endif
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/* ---- System configuration information --------------------------------- */
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#include "ffitarget.h"
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#ifndef LIBFFI_ASM
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#if defined(_MSC_VER) && !defined(__clang__)
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#define __attribute__(X)
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#endif
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#include <stddef.h>
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#include <limits.h>
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/* LONG_LONG_MAX is not always defined (not if STRICT_ANSI, for example).
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But we can find it either under the correct ANSI name, or under GNU
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C's internal name. */
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#define FFI_64_BIT_MAX 9223372036854775807
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#ifdef LONG_LONG_MAX
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# define FFI_LONG_LONG_MAX LONG_LONG_MAX
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#else
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# ifdef LLONG_MAX
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# define FFI_LONG_LONG_MAX LLONG_MAX
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# ifdef _AIX52 /* or newer has C99 LLONG_MAX */
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# undef FFI_64_BIT_MAX
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# define FFI_64_BIT_MAX 9223372036854775807LL
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# endif /* _AIX52 or newer */
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# else
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# ifdef __GNUC__
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# define FFI_LONG_LONG_MAX __LONG_LONG_MAX__
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# endif
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# ifdef _AIX /* AIX 5.1 and earlier have LONGLONG_MAX */
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# ifndef __PPC64__
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# if defined (__IBMC__) || defined (__IBMCPP__)
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# define FFI_LONG_LONG_MAX LONGLONG_MAX
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# endif
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# endif /* __PPC64__ */
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# undef FFI_64_BIT_MAX
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# define FFI_64_BIT_MAX 9223372036854775807LL
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# endif
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# endif
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#endif
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/* The closure code assumes that this works on pointers, i.e. a size_t */
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/* can hold a pointer. */
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typedef struct _ffi_type
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{
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size_t size;
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unsigned short alignment;
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unsigned short type;
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struct _ffi_type **elements;
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} ffi_type;
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#ifndef LIBFFI_HIDE_BASIC_TYPES
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#if SCHAR_MAX == 127
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# define ffi_type_uchar ffi_type_uint8
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# define ffi_type_schar ffi_type_sint8
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#else
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#error "char size not supported"
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#endif
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#if SHRT_MAX == 32767
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# define ffi_type_ushort ffi_type_uint16
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# define ffi_type_sshort ffi_type_sint16
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#elif SHRT_MAX == 2147483647
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# define ffi_type_ushort ffi_type_uint32
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# define ffi_type_sshort ffi_type_sint32
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#else
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#error "short size not supported"
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#endif
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#if INT_MAX == 32767
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# define ffi_type_uint ffi_type_uint16
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# define ffi_type_sint ffi_type_sint16
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#elif INT_MAX == 2147483647
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# define ffi_type_uint ffi_type_uint32
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# define ffi_type_sint ffi_type_sint32
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#elif INT_MAX == 9223372036854775807
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# define ffi_type_uint ffi_type_uint64
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# define ffi_type_sint ffi_type_sint64
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#else
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#error "int size not supported"
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#endif
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#if LONG_MAX == 2147483647
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# if FFI_LONG_LONG_MAX != FFI_64_BIT_MAX
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#error "no 64-bit data type supported"
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# endif
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#elif LONG_MAX != FFI_64_BIT_MAX
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#error "long size not supported"
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#endif
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#if LONG_MAX == 2147483647
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# define ffi_type_ulong ffi_type_uint32
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# define ffi_type_slong ffi_type_sint32
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#elif LONG_MAX == FFI_64_BIT_MAX
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# define ffi_type_ulong ffi_type_uint64
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# define ffi_type_slong ffi_type_sint64
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#else
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#error "long size not supported"
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#endif
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/* Need minimal decorations for DLLs to works on Windows. */
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/* GCC has autoimport and autoexport. Rely on Libtool to */
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/* help MSVC export from a DLL, but always declare data */
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/* to be imported for MSVC clients. This costs an extra */
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/* indirection for MSVC clients using the static version */
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/* of the library, but don't worry about that. Besides, */
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/* as a workaround, they can define FFI_BUILDING if they */
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/* *know* they are going to link with the static library. */
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#if defined _MSC_VER && !defined FFI_BUILDING
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#define FFI_EXTERN extern __declspec(dllimport)
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#else
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#define FFI_EXTERN extern
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#endif
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/* These are defined in types.c */
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FFI_EXTERN ffi_type ffi_type_void;
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FFI_EXTERN ffi_type ffi_type_uint8;
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FFI_EXTERN ffi_type ffi_type_sint8;
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FFI_EXTERN ffi_type ffi_type_uint16;
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FFI_EXTERN ffi_type ffi_type_sint16;
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FFI_EXTERN ffi_type ffi_type_uint32;
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FFI_EXTERN ffi_type ffi_type_sint32;
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FFI_EXTERN ffi_type ffi_type_uint64;
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FFI_EXTERN ffi_type ffi_type_sint64;
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FFI_EXTERN ffi_type ffi_type_float;
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FFI_EXTERN ffi_type ffi_type_double;
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FFI_EXTERN ffi_type ffi_type_pointer;
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#if 0
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FFI_EXTERN ffi_type ffi_type_longdouble;
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#else
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#define ffi_type_longdouble ffi_type_double
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#endif
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#ifdef FFI_TARGET_HAS_COMPLEX_TYPE
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FFI_EXTERN ffi_type ffi_type_complex_float;
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FFI_EXTERN ffi_type ffi_type_complex_double;
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#if 0
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FFI_EXTERN ffi_type ffi_type_complex_longdouble;
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#else
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#define ffi_type_complex_longdouble ffi_type_complex_double
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#endif
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#endif
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#endif /* LIBFFI_HIDE_BASIC_TYPES */
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typedef enum {
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FFI_OK = 0,
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FFI_BAD_TYPEDEF,
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FFI_BAD_ABI
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} ffi_status;
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typedef unsigned FFI_TYPE;
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typedef struct {
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ffi_abi abi;
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unsigned nargs;
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ffi_type **arg_types;
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ffi_type *rtype;
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unsigned bytes;
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unsigned flags;
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#ifdef FFI_EXTRA_CIF_FIELDS
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FFI_EXTRA_CIF_FIELDS;
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#endif
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} ffi_cif;
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#if 0
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/* Used to adjust size/alignment of ffi types. */
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void ffi_prep_types (ffi_abi abi);
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#endif
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/* Used internally, but overridden by some architectures */
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ffi_status ffi_prep_cif_core(ffi_cif *cif,
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ffi_abi abi,
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unsigned int isvariadic,
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unsigned int nfixedargs,
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unsigned int ntotalargs,
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ffi_type *rtype,
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ffi_type **atypes);
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/* ---- Definitions for the raw API -------------------------------------- */
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#ifndef FFI_SIZEOF_ARG
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# if LONG_MAX == 2147483647
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# define FFI_SIZEOF_ARG 4
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# elif LONG_MAX == FFI_64_BIT_MAX
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# define FFI_SIZEOF_ARG 8
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# endif
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#endif
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#ifndef FFI_SIZEOF_JAVA_RAW
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# define FFI_SIZEOF_JAVA_RAW FFI_SIZEOF_ARG
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#endif
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typedef union {
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ffi_sarg sint;
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ffi_arg uint;
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float flt;
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char data[FFI_SIZEOF_ARG];
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void* ptr;
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} ffi_raw;
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#if FFI_SIZEOF_JAVA_RAW == 4 && FFI_SIZEOF_ARG == 8
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/* This is a special case for mips64/n32 ABI (and perhaps others) where
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sizeof(void *) is 4 and FFI_SIZEOF_ARG is 8. */
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typedef union {
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signed int sint;
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unsigned int uint;
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float flt;
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char data[FFI_SIZEOF_JAVA_RAW];
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void* ptr;
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} ffi_java_raw;
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#else
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typedef ffi_raw ffi_java_raw;
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#endif
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void ffi_raw_call (ffi_cif *cif,
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void (*fn)(void),
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void *rvalue,
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ffi_raw *avalue);
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void ffi_ptrarray_to_raw (ffi_cif *cif, void **args, ffi_raw *raw);
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void ffi_raw_to_ptrarray (ffi_cif *cif, ffi_raw *raw, void **args);
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size_t ffi_raw_size (ffi_cif *cif);
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/* This is analogous to the raw API, except it uses Java parameter */
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/* packing, even on 64-bit machines. I.e. on 64-bit machines */
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/* longs and doubles are followed by an empty 64-bit word. */
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void ffi_java_raw_call (ffi_cif *cif,
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void (*fn)(void),
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void *rvalue,
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ffi_java_raw *avalue);
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void ffi_java_ptrarray_to_raw (ffi_cif *cif, void **args, ffi_java_raw *raw);
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void ffi_java_raw_to_ptrarray (ffi_cif *cif, ffi_java_raw *raw, void **args);
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size_t ffi_java_raw_size (ffi_cif *cif);
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/* ---- Definitions for closures ----------------------------------------- */
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#if FFI_CLOSURES
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#ifdef _MSC_VER
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__declspec(align(8))
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#endif
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typedef struct {
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#if 0
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void *trampoline_table;
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void *trampoline_table_entry;
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#else
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char tramp[FFI_TRAMPOLINE_SIZE];
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#endif
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ffi_cif *cif;
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void (*fun)(ffi_cif*,void*,void**,void*);
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void *user_data;
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#ifdef __GNUC__
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} ffi_closure __attribute__((aligned (8)));
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#else
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} ffi_closure;
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# ifdef __sgi
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# pragma pack 0
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# endif
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#endif
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void *ffi_closure_alloc (size_t size, void **code);
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void ffi_closure_free (void *);
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ffi_status
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ffi_prep_closure (ffi_closure*,
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ffi_cif *,
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void (*fun)(ffi_cif*,void*,void**,void*),
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void *user_data);
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ffi_status
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ffi_prep_closure_loc (ffi_closure*,
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ffi_cif *,
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void (*fun)(ffi_cif*,void*,void**,void*),
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void *user_data,
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void*codeloc);
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#ifdef __sgi
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# pragma pack 8
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#endif
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typedef struct {
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#if 0
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void *trampoline_table;
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void *trampoline_table_entry;
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#else
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char tramp[FFI_TRAMPOLINE_SIZE];
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#endif
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ffi_cif *cif;
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#if !FFI_NATIVE_RAW_API
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/* if this is enabled, then a raw closure has the same layout
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as a regular closure. We use this to install an intermediate
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|
handler to do the transaltion, void** -> ffi_raw*. */
|
||
|
|
|
||
|
|
void (*translate_args)(ffi_cif*,void*,void**,void*);
|
||
|
|
void *this_closure;
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void (*fun)(ffi_cif*,void*,ffi_raw*,void*);
|
||
|
|
void *user_data;
|
||
|
|
|
||
|
|
} ffi_raw_closure;
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
#if 0
|
||
|
|
void *trampoline_table;
|
||
|
|
void *trampoline_table_entry;
|
||
|
|
#else
|
||
|
|
char tramp[FFI_TRAMPOLINE_SIZE];
|
||
|
|
#endif
|
||
|
|
|
||
|
|
ffi_cif *cif;
|
||
|
|
|
||
|
|
#if !FFI_NATIVE_RAW_API
|
||
|
|
|
||
|
|
/* if this is enabled, then a raw closure has the same layout
|
||
|
|
as a regular closure. We use this to install an intermediate
|
||
|
|
handler to do the transaltion, void** -> ffi_raw*. */
|
||
|
|
|
||
|
|
void (*translate_args)(ffi_cif*,void*,void**,void*);
|
||
|
|
void *this_closure;
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void (*fun)(ffi_cif*,void*,ffi_java_raw*,void*);
|
||
|
|
void *user_data;
|
||
|
|
|
||
|
|
} ffi_java_raw_closure;
|
||
|
|
|
||
|
|
ffi_status
|
||
|
|
ffi_prep_raw_closure (ffi_raw_closure*,
|
||
|
|
ffi_cif *cif,
|
||
|
|
void (*fun)(ffi_cif*,void*,ffi_raw*,void*),
|
||
|
|
void *user_data);
|
||
|
|
|
||
|
|
ffi_status
|
||
|
|
ffi_prep_raw_closure_loc (ffi_raw_closure*,
|
||
|
|
ffi_cif *cif,
|
||
|
|
void (*fun)(ffi_cif*,void*,ffi_raw*,void*),
|
||
|
|
void *user_data,
|
||
|
|
void *codeloc);
|
||
|
|
|
||
|
|
ffi_status
|
||
|
|
ffi_prep_java_raw_closure (ffi_java_raw_closure*,
|
||
|
|
ffi_cif *cif,
|
||
|
|
void (*fun)(ffi_cif*,void*,ffi_java_raw*,void*),
|
||
|
|
void *user_data);
|
||
|
|
|
||
|
|
ffi_status
|
||
|
|
ffi_prep_java_raw_closure_loc (ffi_java_raw_closure*,
|
||
|
|
ffi_cif *cif,
|
||
|
|
void (*fun)(ffi_cif*,void*,ffi_java_raw*,void*),
|
||
|
|
void *user_data,
|
||
|
|
void *codeloc);
|
||
|
|
|
||
|
|
#endif /* FFI_CLOSURES */
|
||
|
|
|
||
|
|
/* ---- Public interface definition -------------------------------------- */
|
||
|
|
|
||
|
|
ffi_status ffi_prep_cif(ffi_cif *cif,
|
||
|
|
ffi_abi abi,
|
||
|
|
unsigned int nargs,
|
||
|
|
ffi_type *rtype,
|
||
|
|
ffi_type **atypes);
|
||
|
|
|
||
|
|
ffi_status ffi_prep_cif_var(ffi_cif *cif,
|
||
|
|
ffi_abi abi,
|
||
|
|
unsigned int nfixedargs,
|
||
|
|
unsigned int ntotalargs,
|
||
|
|
ffi_type *rtype,
|
||
|
|
ffi_type **atypes);
|
||
|
|
|
||
|
|
void ffi_call(ffi_cif *cif,
|
||
|
|
void (*fn)(void),
|
||
|
|
void *rvalue,
|
||
|
|
void **avalue);
|
||
|
|
|
||
|
|
/* Useful for eliminating compiler warnings */
|
||
|
|
#define FFI_FN(f) ((void (*)(void))f)
|
||
|
|
|
||
|
|
/* ---- Definitions shared with assembly code ---------------------------- */
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* If these change, update src/mips/ffitarget.h. */
|
||
|
|
#define FFI_TYPE_VOID 0
|
||
|
|
#define FFI_TYPE_INT 1
|
||
|
|
#define FFI_TYPE_FLOAT 2
|
||
|
|
#define FFI_TYPE_DOUBLE 3
|
||
|
|
#if 0
|
||
|
|
#define FFI_TYPE_LONGDOUBLE 4
|
||
|
|
#else
|
||
|
|
#define FFI_TYPE_LONGDOUBLE FFI_TYPE_DOUBLE
|
||
|
|
#endif
|
||
|
|
#define FFI_TYPE_UINT8 5
|
||
|
|
#define FFI_TYPE_SINT8 6
|
||
|
|
#define FFI_TYPE_UINT16 7
|
||
|
|
#define FFI_TYPE_SINT16 8
|
||
|
|
#define FFI_TYPE_UINT32 9
|
||
|
|
#define FFI_TYPE_SINT32 10
|
||
|
|
#define FFI_TYPE_UINT64 11
|
||
|
|
#define FFI_TYPE_SINT64 12
|
||
|
|
#define FFI_TYPE_STRUCT 13
|
||
|
|
#define FFI_TYPE_POINTER 14
|
||
|
|
#define FFI_TYPE_COMPLEX 15
|
||
|
|
|
||
|
|
/* This should always refer to the last type code (for sanity checks) */
|
||
|
|
#define FFI_TYPE_LAST FFI_TYPE_COMPLEX
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|