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/* -----------------------------------------------------------------*-C-*-
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libffi @VERSION@ - Copyright (c) 1996-2003 Red Hat, Inc.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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``Software''), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER 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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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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http://gcc.gnu.org/ml/java/1999-q3/msg00174.html
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-------------------------------------------------------------------- */
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/* Specify which architecture libffi is configured for. */
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/* ---- System configuration information --------------------------------- */
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#include <ffitarget.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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# define FFI_LONG_LONG_MAX LONG_LONG_MAX
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# define FFI_LONG_LONG_MAX LLONG_MAX
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# define FFI_LONG_LONG_MAX __LONG_LONG_MAX__
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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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#error "char size not supported"
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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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#error "short size not supported"
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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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#error "int size not supported"
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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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#if LONG_MAX == 2147483647
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# if FFI_LONG_LONG_MAX != 9223372036854775807
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#error "no 64-bit data type supported"
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#elif LONG_MAX != 9223372036854775807
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#error "long size not supported"
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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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unsigned short alignment;
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/*@null@*/ struct _ffi_type **elements;
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/* These are defined in types.c */
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extern ffi_type ffi_type_void;
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extern ffi_type ffi_type_uint8;
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extern ffi_type ffi_type_sint8;
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extern ffi_type ffi_type_uint16;
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extern ffi_type ffi_type_sint16;
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extern ffi_type ffi_type_uint32;
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extern ffi_type ffi_type_sint32;
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extern ffi_type ffi_type_uint64;
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extern ffi_type ffi_type_sint64;
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extern ffi_type ffi_type_float;
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extern ffi_type ffi_type_double;
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extern ffi_type ffi_type_longdouble;
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extern ffi_type ffi_type_pointer;
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typedef unsigned FFI_TYPE;
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/*@dependent@*/ ffi_type **arg_types;
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/*@dependent@*/ ffi_type *rtype;
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#ifdef FFI_EXTRA_CIF_FIELDS
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FFI_EXTRA_CIF_FIELDS;
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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 == 9223372036854775807
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# define FFI_SIZEOF_ARG 8
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char data[FFI_SIZEOF_ARG];
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void ffi_raw_call (/*@dependent@*/ ffi_cif *cif,
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/*@out@*/ void *rvalue,
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/*@dependent@*/ 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 (/*@dependent@*/ ffi_cif *cif,
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/*@out@*/ void *rvalue,
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/*@dependent@*/ ffi_raw *avalue);
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void ffi_java_ptrarray_to_raw (ffi_cif *cif, void **args, ffi_raw *raw);
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void ffi_java_raw_to_ptrarray (ffi_cif *cif, ffi_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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char tramp[FFI_TRAMPOLINE_SIZE];
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void (*fun)(ffi_cif*,void*,void**,void*);
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} ffi_closure __attribute__((aligned (8)));
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ffi_prep_closure (ffi_closure*,
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void (*fun)(ffi_cif*,void*,void**,void*),
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char tramp[FFI_TRAMPOLINE_SIZE];
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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*. */
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void (*translate_args)(ffi_cif*,void*,void**,void*);
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void (*fun)(ffi_cif*,void*,ffi_raw*,void*);
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ffi_prep_raw_closure (ffi_raw_closure*,
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void (*fun)(ffi_cif*,void*,ffi_raw*,void*),
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ffi_prep_java_raw_closure (ffi_raw_closure*,
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void (*fun)(ffi_cif*,void*,ffi_raw*,void*),
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#endif /* FFI_CLOSURES */
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/* ---- Public interface definition -------------------------------------- */
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ffi_status ffi_prep_cif(/*@out@*/ /*@partial@*/ ffi_cif *cif,
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/*@dependent@*/ /*@out@*/ /*@partial@*/ ffi_type *rtype,
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/*@dependent@*/ ffi_type **atypes);
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void ffi_call(/*@dependent@*/ ffi_cif *cif,
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/*@out@*/ void *rvalue,
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/*@dependent@*/ void **avalue);
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/* Useful for eliminating compiler warnings */
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#define FFI_FN(f) ((void (*)())f)
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/* ---- Definitions shared with assembly code ---------------------------- */
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/* If these change, update src/mips/ffitarget.h. */
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#define FFI_TYPE_VOID 0
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#define FFI_TYPE_INT 1
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#define FFI_TYPE_FLOAT 2
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#define FFI_TYPE_DOUBLE 3
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#if @HAVE_LONG_DOUBLE@
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#define FFI_TYPE_LONGDOUBLE 4
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#define FFI_TYPE_LONGDOUBLE FFI_TYPE_DOUBLE
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#define FFI_TYPE_UINT8 5
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#define FFI_TYPE_SINT8 6
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#define FFI_TYPE_UINT16 7
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#define FFI_TYPE_SINT16 8
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#define FFI_TYPE_UINT32 9
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#define FFI_TYPE_SINT32 10
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#define FFI_TYPE_UINT64 11
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#define FFI_TYPE_SINT64 12
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#define FFI_TYPE_STRUCT 13
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#define FFI_TYPE_POINTER 14
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/* This should always refer to the last type code (for sanity checks) */
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#define FFI_TYPE_LAST FFI_TYPE_POINTER
added
removed
libffi/include/ffi.h.in
