[pypy-commit] cffi default: merge
fijal
noreply at buildbot.pypy.org
Mon Jun 18 12:57:16 CEST 2012
Author: Maciej Fijalkowski <fijall at gmail.com>
Branch:
Changeset: r440:fa11da541839
Date: 2012-06-18 12:56 +0200
http://bitbucket.org/cffi/cffi/changeset/fa11da541839/
Log: merge
diff --git a/c/libffi_msvc/LICENSE b/c/libffi_msvc/LICENSE
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/LICENSE
@@ -0,0 +1,20 @@
+libffi - Copyright (c) 1996-2003 Red Hat, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+``Software''), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
diff --git a/c/libffi_msvc/README b/c/libffi_msvc/README
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/README
@@ -0,0 +1,502 @@
+This directory contains the libffi package, which is not part of GCC but
+shipped with GCC as convenience.
+
+Copied without changes from CPython 2.6.
+
+Status
+======
+
+libffi-2.00 has not been released yet! This is a development snapshot!
+
+libffi-1.20 was released on October 5, 1998. Check the libffi web
+page for updates: <URL:http://sources.redhat.com/libffi/>.
+
+
+What is libffi?
+===============
+
+Compilers for high level languages generate code that follow certain
+conventions. These conventions are necessary, in part, for separate
+compilation to work. One such convention is the "calling
+convention". The "calling convention" is essentially a set of
+assumptions made by the compiler about where function arguments will
+be found on entry to a function. A "calling convention" also specifies
+where the return value for a function is found.
+
+Some programs may not know at the time of compilation what arguments
+are to be passed to a function. For instance, an interpreter may be
+told at run-time about the number and types of arguments used to call
+a given function. Libffi can be used in such programs to provide a
+bridge from the interpreter program to compiled code.
+
+The libffi library provides a portable, high level programming
+interface to various calling conventions. This allows a programmer to
+call any function specified by a call interface description at run
+time.
+
+Ffi stands for Foreign Function Interface. A foreign function
+interface is the popular name for the interface that allows code
+written in one language to call code written in another language. The
+libffi library really only provides the lowest, machine dependent
+layer of a fully featured foreign function interface. A layer must
+exist above libffi that handles type conversions for values passed
+between the two languages.
+
+
+Supported Platforms and Prerequisites
+=====================================
+
+Libffi has been ported to:
+
+ SunOS 4.1.3 & Solaris 2.x (SPARC-V8, SPARC-V9)
+
+ Irix 5.3 & 6.2 (System V/o32 & n32)
+
+ Intel x86 - Linux (System V ABI)
+
+ Alpha - Linux and OSF/1
+
+ m68k - Linux (System V ABI)
+
+ PowerPC - Linux (System V ABI, Darwin, AIX)
+
+ ARM - Linux (System V ABI)
+
+Libffi has been tested with the egcs 1.0.2 gcc compiler. Chances are
+that other versions will work. Libffi has also been built and tested
+with the SGI compiler tools.
+
+On PowerPC, the tests failed (see the note below).
+
+You must use GNU make to build libffi. SGI's make will not work.
+Sun's probably won't either.
+
+If you port libffi to another platform, please let me know! I assume
+that some will be easy (x86 NetBSD), and others will be more difficult
+(HP).
+
+
+Installing libffi
+=================
+
+[Note: before actually performing any of these installation steps,
+ you may wish to read the "Platform Specific Notes" below.]
+
+First you must configure the distribution for your particular
+system. Go to the directory you wish to build libffi in and run the
+"configure" program found in the root directory of the libffi source
+distribution.
+
+You may want to tell configure where to install the libffi library and
+header files. To do that, use the --prefix configure switch. Libffi
+will install under /usr/local by default.
+
+If you want to enable extra run-time debugging checks use the the
+--enable-debug configure switch. This is useful when your program dies
+mysteriously while using libffi.
+
+Another useful configure switch is --enable-purify-safety. Using this
+will add some extra code which will suppress certain warnings when you
+are using Purify with libffi. Only use this switch when using
+Purify, as it will slow down the library.
+
+Configure has many other options. Use "configure --help" to see them all.
+
+Once configure has finished, type "make". Note that you must be using
+GNU make. SGI's make will not work. Sun's probably won't either.
+You can ftp GNU make from prep.ai.mit.edu:/pub/gnu.
+
+To ensure that libffi is working as advertised, type "make test".
+
+To install the library and header files, type "make install".
+
+
+Using libffi
+============
+
+ The Basics
+ ----------
+
+Libffi assumes that you have a pointer to the function you wish to
+call and that you know the number and types of arguments to pass it,
+as well as the return type of the function.
+
+The first thing you must do is create an ffi_cif object that matches
+the signature of the function you wish to call. The cif in ffi_cif
+stands for Call InterFace. To prepare a call interface object, use the
+following function:
+
+ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi,
+ unsigned int nargs,
+ ffi_type *rtype, ffi_type **atypes);
+
+ CIF is a pointer to the call interface object you wish
+ to initialize.
+
+ ABI is an enum that specifies the calling convention
+ to use for the call. FFI_DEFAULT_ABI defaults
+ to the system's native calling convention. Other
+ ABI's may be used with care. They are system
+ specific.
+
+ NARGS is the number of arguments this function accepts.
+ libffi does not yet support vararg functions.
+
+ RTYPE is a pointer to an ffi_type structure that represents
+ the return type of the function. Ffi_type objects
+ describe the types of values. libffi provides
+ ffi_type objects for many of the native C types:
+ signed int, unsigned int, signed char, unsigned char,
+ etc. There is also a pointer ffi_type object and
+ a void ffi_type. Use &ffi_type_void for functions that
+ don't return values.
+
+ ATYPES is a vector of ffi_type pointers. ARGS must be NARGS long.
+ If NARGS is 0, this is ignored.
+
+
+ffi_prep_cif will return a status code that you are responsible
+for checking. It will be one of the following:
+
+ FFI_OK - All is good.
+
+ FFI_BAD_TYPEDEF - One of the ffi_type objects that ffi_prep_cif
+ came across is bad.
+
+
+Before making the call, the VALUES vector should be initialized
+with pointers to the appropriate argument values.
+
+To call the the function using the initialized ffi_cif, use the
+ffi_call function:
+
+void ffi_call(ffi_cif *cif, void *fn, void *rvalue, void **avalues);
+
+ CIF is a pointer to the ffi_cif initialized specifically
+ for this function.
+
+ FN is a pointer to the function you want to call.
+
+ RVALUE is a pointer to a chunk of memory that is to hold the
+ result of the function call. Currently, it must be
+ at least one word in size (except for the n32 version
+ under Irix 6.x, which must be a pointer to an 8 byte
+ aligned value (a long long). It must also be at least
+ word aligned (depending on the return type, and the
+ system's alignment requirements). If RTYPE is
+ &ffi_type_void, this is ignored. If RVALUE is NULL,
+ the return value is discarded.
+
+ AVALUES is a vector of void* that point to the memory locations
+ holding the argument values for a call.
+ If NARGS is 0, this is ignored.
+
+
+If you are expecting a return value from FN it will have been stored
+at RVALUE.
+
+
+
+ An Example
+ ----------
+
+Here is a trivial example that calls puts() a few times.
+
+ #include <stdio.h>
+ #include <ffi.h>
+
+ int main()
+ {
+ ffi_cif cif;
+ ffi_type *args[1];
+ void *values[1];
+ char *s;
+ int rc;
+
+ /* Initialize the argument info vectors */
+ args[0] = &ffi_type_uint;
+ values[0] = &s;
+
+ /* Initialize the cif */
+ if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 1,
+ &ffi_type_uint, args) == FFI_OK)
+ {
+ s = "Hello World!";
+ ffi_call(&cif, puts, &rc, values);
+ /* rc now holds the result of the call to puts */
+
+ /* values holds a pointer to the function's arg, so to
+ call puts() again all we need to do is change the
+ value of s */
+ s = "This is cool!";
+ ffi_call(&cif, puts, &rc, values);
+ }
+
+ return 0;
+ }
+
+
+
+ Aggregate Types
+ ---------------
+
+Although libffi has no special support for unions or bit-fields, it is
+perfectly happy passing structures back and forth. You must first
+describe the structure to libffi by creating a new ffi_type object
+for it. Here is the definition of ffi_type:
+
+ typedef struct _ffi_type
+ {
+ unsigned size;
+ short alignment;
+ short type;
+ struct _ffi_type **elements;
+ } ffi_type;
+
+All structures must have type set to FFI_TYPE_STRUCT. You may set
+size and alignment to 0. These will be calculated and reset to the
+appropriate values by ffi_prep_cif().
+
+elements is a NULL terminated array of pointers to ffi_type objects
+that describe the type of the structure elements. These may, in turn,
+be structure elements.
+
+The following example initializes a ffi_type object representing the
+tm struct from Linux's time.h:
+
+ struct tm {
+ int tm_sec;
+ int tm_min;
+ int tm_hour;
+ int tm_mday;
+ int tm_mon;
+ int tm_year;
+ int tm_wday;
+ int tm_yday;
+ int tm_isdst;
+ /* Those are for future use. */
+ long int __tm_gmtoff__;
+ __const char *__tm_zone__;
+ };
+
+ {
+ ffi_type tm_type;
+ ffi_type *tm_type_elements[12];
+ int i;
+
+ tm_type.size = tm_type.alignment = 0;
+ tm_type.elements = &tm_type_elements;
+
+ for (i = 0; i < 9; i++)
+ tm_type_elements[i] = &ffi_type_sint;
+
+ tm_type_elements[9] = &ffi_type_slong;
+ tm_type_elements[10] = &ffi_type_pointer;
+ tm_type_elements[11] = NULL;
+
+ /* tm_type can now be used to represent tm argument types and
+ return types for ffi_prep_cif() */
+ }
+
+
+
+Platform Specific Notes
+=======================
+
+ Intel x86
+ ---------
+
+There are no known problems with the x86 port.
+
+ Sun SPARC - SunOS 4.1.3 & Solaris 2.x
+ -------------------------------------
+
+You must use GNU Make to build libffi on Sun platforms.
+
+ MIPS - Irix 5.3 & 6.x
+ ---------------------
+
+Irix 6.2 and better supports three different calling conventions: o32,
+n32 and n64. Currently, libffi only supports both o32 and n32 under
+Irix 6.x, but only o32 under Irix 5.3. Libffi will automatically be
+configured for whichever calling convention it was built for.
+
+By default, the configure script will try to build libffi with the GNU
+development tools. To build libffi with the SGI development tools, set
+the environment variable CC to either "cc -32" or "cc -n32" before
+running configure under Irix 6.x (depending on whether you want an o32
+or n32 library), or just "cc" for Irix 5.3.
+
+With the n32 calling convention, when returning structures smaller
+than 16 bytes, be sure to provide an RVALUE that is 8 byte aligned.
+Here's one way of forcing this:
+
+ double struct_storage[2];
+ my_small_struct *s = (my_small_struct *) struct_storage;
+ /* Use s for RVALUE */
+
+If you don't do this you are liable to get spurious bus errors.
+
+"long long" values are not supported yet.
+
+You must use GNU Make to build libffi on SGI platforms.
+
+ ARM - System V ABI
+ ------------------
+
+The ARM port was performed on a NetWinder running ARM Linux ELF
+(2.0.31) and gcc 2.8.1.
+
+
+
+ PowerPC System V ABI
+ --------------------
+
+There are two `System V ABI's which libffi implements for PowerPC.
+They differ only in how small structures are returned from functions.
+
+In the FFI_SYSV version, structures that are 8 bytes or smaller are
+returned in registers. This is what GCC does when it is configured
+for solaris, and is what the System V ABI I have (dated September
+1995) says.
+
+In the FFI_GCC_SYSV version, all structures are returned the same way:
+by passing a pointer as the first argument to the function. This is
+what GCC does when it is configured for linux or a generic sysv
+target.
+
+EGCS 1.0.1 (and probably other versions of EGCS/GCC) also has a
+inconsistency with the SysV ABI: When a procedure is called with many
+floating-point arguments, some of them get put on the stack. They are
+all supposed to be stored in double-precision format, even if they are
+only single-precision, but EGCS stores single-precision arguments as
+single-precision anyway. This causes one test to fail (the `many
+arguments' test).
+
+
+What's With The Crazy Comments?
+===============================
+
+You might notice a number of cryptic comments in the code, delimited
+by /*@ and @*/. These are annotations read by the program LCLint, a
+tool for statically checking C programs. You can read all about it at
+<http://larch-www.lcs.mit.edu:8001/larch/lclint/index.html>.
+
+
+History
+=======
+
+1.20 Oct-5-98
+ Raffaele Sena produces ARM port.
+
+1.19 Oct-5-98
+ Fixed x86 long double and long long return support.
+ m68k bug fixes from Andreas Schwab.
+ Patch for DU assembler compatibility for the Alpha from Richard
+ Henderson.
+
+1.18 Apr-17-98
+ Bug fixes and MIPS configuration changes.
+
+1.17 Feb-24-98
+ Bug fixes and m68k port from Andreas Schwab. PowerPC port from
+ Geoffrey Keating. Various bug x86, Sparc and MIPS bug fixes.
+
+1.16 Feb-11-98
+ Richard Henderson produces Alpha port.
+
+1.15 Dec-4-97
+ Fixed an n32 ABI bug. New libtool, auto* support.
+
+1.14 May-13-97
+ libtool is now used to generate shared and static libraries.
+ Fixed a minor portability problem reported by Russ McManus
+ <mcmanr at eq.gs.com>.
+
+1.13 Dec-2-96
+ Added --enable-purify-safety to keep Purify from complaining
+ about certain low level code.
+ Sparc fix for calling functions with < 6 args.
+ Linux x86 a.out fix.
+
+1.12 Nov-22-96
+ Added missing ffi_type_void, needed for supporting void return
+ types. Fixed test case for non MIPS machines. Cygnus Support
+ is now Cygnus Solutions.
+
+1.11 Oct-30-96
+ Added notes about GNU make.
+
+1.10 Oct-29-96
+ Added configuration fix for non GNU compilers.
+
+1.09 Oct-29-96
+ Added --enable-debug configure switch. Clean-ups based on LCLint
+ feedback. ffi_mips.h is always installed. Many configuration
+ fixes. Fixed ffitest.c for sparc builds.
+
+1.08 Oct-15-96
+ Fixed n32 problem. Many clean-ups.
+
+1.07 Oct-14-96
+ Gordon Irlam rewrites v8.S again. Bug fixes.
+
+1.06 Oct-14-96
+ Gordon Irlam improved the sparc port.
+
+1.05 Oct-14-96
+ Interface changes based on feedback.
+
+1.04 Oct-11-96
+ Sparc port complete (modulo struct passing bug).
+
+1.03 Oct-10-96
+ Passing struct args, and returning struct values works for
+ all architectures/calling conventions. Expanded tests.
+
+1.02 Oct-9-96
+ Added SGI n32 support. Fixed bugs in both o32 and Linux support.
+ Added "make test".
+
+1.01 Oct-8-96
+ Fixed float passing bug in mips version. Restructured some
+ of the code. Builds cleanly with SGI tools.
+
+1.00 Oct-7-96
+ First release. No public announcement.
+
+
+Authors & Credits
+=================
+
+libffi was written by Anthony Green <green at cygnus.com>.
+
+Portions of libffi were derived from Gianni Mariani's free gencall
+library for Silicon Graphics machines.
+
+The closure mechanism was designed and implemented by Kresten Krab
+Thorup.
+
+The Sparc port was derived from code contributed by the fine folks at
+Visible Decisions Inc <http://www.vdi.com>. Further enhancements were
+made by Gordon Irlam at Cygnus Solutions <http://www.cygnus.com>.
+
+The Alpha port was written by Richard Henderson at Cygnus Solutions.
+
+Andreas Schwab ported libffi to m68k Linux and provided a number of
+bug fixes.
+
+Geoffrey Keating ported libffi to the PowerPC.
+
+Raffaele Sena ported libffi to the ARM.
+
+Jesper Skov and Andrew Haley both did more than their fair share of
+stepping through the code and tracking down bugs.
+
+Thanks also to Tom Tromey for bug fixes and configuration help.
+
+Thanks to Jim Blandy, who provided some useful feedback on the libffi
+interface.
+
+If you have a problem, or have found a bug, please send a note to
+green at cygnus.com.
diff --git a/c/libffi_msvc/README.ctypes b/c/libffi_msvc/README.ctypes
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/README.ctypes
@@ -0,0 +1,7 @@
+The purpose is to hack the libffi sources so that they can be compiled
+with MSVC, and to extend them so that they have the features I need
+for ctypes.
+
+I retrieved the libffi sources from the gcc cvs repository on
+2004-01-27. Then I did 'configure' in a 'build' subdirectory on a x86
+linux system, and copied the files I found useful.
diff --git a/c/libffi_msvc/ffi.c b/c/libffi_msvc/ffi.c
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/ffi.c
@@ -0,0 +1,480 @@
+/* -----------------------------------------------------------------------
+ ffi.c - Copyright (c) 1996, 1998, 1999, 2001 Red Hat, Inc.
+ Copyright (c) 2002 Ranjit Mathew
+ Copyright (c) 2002 Bo Thorsen
+ Copyright (c) 2002 Roger Sayle
+
+ x86 Foreign Function Interface
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#include <ffi.h>
+#include <ffi_common.h>
+
+#include <stdlib.h>
+
+/* ffi_prep_args is called by the assembly routine once stack space
+ has been allocated for the function's arguments */
+
+extern void Py_FatalError(char *msg);
+
+/*@-exportheader@*/
+void ffi_prep_args(char *stack, extended_cif *ecif)
+/*@=exportheader@*/
+{
+ register unsigned int i;
+ register void **p_argv;
+ register char *argp;
+ register ffi_type **p_arg;
+
+ argp = stack;
+ if (ecif->cif->rtype->type == FFI_TYPE_STRUCT)
+ {
+ *(void **) argp = ecif->rvalue;
+ argp += sizeof(void *);
+ }
+
+ p_argv = ecif->avalue;
+
+ for (i = ecif->cif->nargs, p_arg = ecif->cif->arg_types;
+ i != 0;
+ i--, p_arg++)
+ {
+ size_t z;
+
+ /* Align if necessary */
+ if ((sizeof(void *) - 1) & (size_t) argp)
+ argp = (char *) ALIGN(argp, sizeof(void *));
+
+ z = (*p_arg)->size;
+ if (z < sizeof(int))
+ {
+ z = sizeof(int);
+ switch ((*p_arg)->type)
+ {
+ case FFI_TYPE_SINT8:
+ *(signed int *) argp = (signed int)*(SINT8 *)(* p_argv);
+ break;
+
+ case FFI_TYPE_UINT8:
+ *(unsigned int *) argp = (unsigned int)*(UINT8 *)(* p_argv);
+ break;
+
+ case FFI_TYPE_SINT16:
+ *(signed int *) argp = (signed int)*(SINT16 *)(* p_argv);
+ break;
+
+ case FFI_TYPE_UINT16:
+ *(unsigned int *) argp = (unsigned int)*(UINT16 *)(* p_argv);
+ break;
+
+ case FFI_TYPE_SINT32:
+ *(signed int *) argp = (signed int)*(SINT32 *)(* p_argv);
+ break;
+
+ case FFI_TYPE_UINT32:
+ *(unsigned int *) argp = (unsigned int)*(UINT32 *)(* p_argv);
+ break;
+
+ case FFI_TYPE_STRUCT:
+ *(unsigned int *) argp = (unsigned int)*(UINT32 *)(* p_argv);
+ break;
+
+ default:
+ FFI_ASSERT(0);
+ }
+ }
+ else
+ {
+ memcpy(argp, *p_argv, z);
+ }
+ p_argv++;
+ argp += z;
+ }
+
+ if (argp - stack > ecif->cif->bytes)
+ {
+ Py_FatalError("FFI BUG: not enough stack space for arguments");
+ }
+ return;
+}
+
+/* Perform machine dependent cif processing */
+ffi_status ffi_prep_cif_machdep(ffi_cif *cif)
+{
+ /* Set the return type flag */
+ switch (cif->rtype->type)
+ {
+ case FFI_TYPE_VOID:
+ case FFI_TYPE_STRUCT:
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_FLOAT:
+ case FFI_TYPE_DOUBLE:
+ case FFI_TYPE_LONGDOUBLE:
+ cif->flags = (unsigned) cif->rtype->type;
+ break;
+
+ case FFI_TYPE_UINT64:
+#ifdef _WIN64
+ case FFI_TYPE_POINTER:
+#endif
+ cif->flags = FFI_TYPE_SINT64;
+ break;
+
+ default:
+ cif->flags = FFI_TYPE_INT;
+ break;
+ }
+
+ return FFI_OK;
+}
+
+#ifdef _WIN32
+/*@-declundef@*/
+/*@-exportheader@*/
+extern int
+ffi_call_SYSV(void (*)(char *, extended_cif *),
+ /*@out@*/ extended_cif *,
+ unsigned, unsigned,
+ /*@out@*/ unsigned *,
+ void (*fn)());
+/*@=declundef@*/
+/*@=exportheader@*/
+
+/*@-declundef@*/
+/*@-exportheader@*/
+extern int
+ffi_call_STDCALL(void (*)(char *, extended_cif *),
+ /*@out@*/ extended_cif *,
+ unsigned, unsigned,
+ /*@out@*/ unsigned *,
+ void (*fn)());
+/*@=declundef@*/
+/*@=exportheader@*/
+#endif
+
+#ifdef _WIN64
+extern int
+ffi_call_AMD64(void (*)(char *, extended_cif *),
+ /*@out@*/ extended_cif *,
+ unsigned, unsigned,
+ /*@out@*/ unsigned *,
+ void (*fn)());
+#endif
+
+int
+ffi_call(/*@dependent@*/ ffi_cif *cif,
+ void (*fn)(),
+ /*@out@*/ void *rvalue,
+ /*@dependent@*/ void **avalue)
+{
+ extended_cif ecif;
+
+ ecif.cif = cif;
+ ecif.avalue = avalue;
+
+ /* If the return value is a struct and we don't have a return */
+ /* value address then we need to make one */
+
+ if ((rvalue == NULL) &&
+ (cif->rtype->type == FFI_TYPE_STRUCT))
+ {
+ /*@-sysunrecog@*/
+ ecif.rvalue = alloca(cif->rtype->size);
+ /*@=sysunrecog@*/
+ }
+ else
+ ecif.rvalue = rvalue;
+
+
+ switch (cif->abi)
+ {
+#if !defined(_WIN64)
+ case FFI_SYSV:
+ /*@-usedef@*/
+ return ffi_call_SYSV(ffi_prep_args, &ecif, cif->bytes,
+ cif->flags, ecif.rvalue, fn);
+ /*@=usedef@*/
+ break;
+
+ case FFI_STDCALL:
+ /*@-usedef@*/
+ return ffi_call_STDCALL(ffi_prep_args, &ecif, cif->bytes,
+ cif->flags, ecif.rvalue, fn);
+ /*@=usedef@*/
+ break;
+#else
+ case FFI_SYSV:
+ /*@-usedef@*/
+ /* Function call needs at least 40 bytes stack size, on win64 AMD64 */
+ return ffi_call_AMD64(ffi_prep_args, &ecif, cif->bytes ? cif->bytes : 40,
+ cif->flags, ecif.rvalue, fn);
+ /*@=usedef@*/
+ break;
+#endif
+
+ default:
+ FFI_ASSERT(0);
+ break;
+ }
+ return -1; /* theller: Hrm. */
+}
+
+
+/** private members **/
+
+static void ffi_prep_incoming_args_SYSV (char *stack, void **ret,
+ void** args, ffi_cif* cif);
+/* This function is jumped to by the trampoline */
+
+#ifdef _WIN64
+void *
+#else
+static void __fastcall
+#endif
+ffi_closure_SYSV (ffi_closure *closure, int *argp)
+{
+ // this is our return value storage
+ long double res;
+
+ // our various things...
+ ffi_cif *cif;
+ void **arg_area;
+ unsigned short rtype;
+ void *resp = (void*)&res;
+ void *args = &argp[1];
+
+ cif = closure->cif;
+ arg_area = (void**) alloca (cif->nargs * sizeof (void*));
+
+ /* this call will initialize ARG_AREA, such that each
+ * element in that array points to the corresponding
+ * value on the stack; and if the function returns
+ * a structure, it will re-set RESP to point to the
+ * structure return address. */
+
+ ffi_prep_incoming_args_SYSV(args, (void**)&resp, arg_area, cif);
+
+ (closure->fun) (cif, resp, arg_area, closure->user_data);
+
+ rtype = cif->flags;
+
+#if defined(_WIN32) && !defined(_WIN64)
+#ifdef _MSC_VER
+ /* now, do a generic return based on the value of rtype */
+ if (rtype == FFI_TYPE_INT)
+ {
+ _asm mov eax, resp ;
+ _asm mov eax, [eax] ;
+ }
+ else if (rtype == FFI_TYPE_FLOAT)
+ {
+ _asm mov eax, resp ;
+ _asm fld DWORD PTR [eax] ;
+// asm ("flds (%0)" : : "r" (resp) : "st" );
+ }
+ else if (rtype == FFI_TYPE_DOUBLE)
+ {
+ _asm mov eax, resp ;
+ _asm fld QWORD PTR [eax] ;
+// asm ("fldl (%0)" : : "r" (resp) : "st", "st(1)" );
+ }
+ else if (rtype == FFI_TYPE_LONGDOUBLE)
+ {
+// asm ("fldt (%0)" : : "r" (resp) : "st", "st(1)" );
+ }
+ else if (rtype == FFI_TYPE_SINT64)
+ {
+ _asm mov edx, resp ;
+ _asm mov eax, [edx] ;
+ _asm mov edx, [edx + 4] ;
+// asm ("movl 0(%0),%%eax;"
+// "movl 4(%0),%%edx"
+// : : "r"(resp)
+// : "eax", "edx");
+ }
+#else
+ /* now, do a generic return based on the value of rtype */
+ if (rtype == FFI_TYPE_INT)
+ {
+ asm ("movl (%0),%%eax" : : "r" (resp) : "eax");
+ }
+ else if (rtype == FFI_TYPE_FLOAT)
+ {
+ asm ("flds (%0)" : : "r" (resp) : "st" );
+ }
+ else if (rtype == FFI_TYPE_DOUBLE)
+ {
+ asm ("fldl (%0)" : : "r" (resp) : "st", "st(1)" );
+ }
+ else if (rtype == FFI_TYPE_LONGDOUBLE)
+ {
+ asm ("fldt (%0)" : : "r" (resp) : "st", "st(1)" );
+ }
+ else if (rtype == FFI_TYPE_SINT64)
+ {
+ asm ("movl 0(%0),%%eax;"
+ "movl 4(%0),%%edx"
+ : : "r"(resp)
+ : "eax", "edx");
+ }
+#endif
+#endif
+
+#ifdef _WIN64
+ /* The result is returned in rax. This does the right thing for
+ result types except for floats; we have to 'mov xmm0, rax' in the
+ caller to correct this.
+ */
+ return *(void **)resp;
+#endif
+}
+
+/*@-exportheader@*/
+static void
+ffi_prep_incoming_args_SYSV(char *stack, void **rvalue,
+ void **avalue, ffi_cif *cif)
+/*@=exportheader@*/
+{
+ register unsigned int i;
+ register void **p_argv;
+ register char *argp;
+ register ffi_type **p_arg;
+
+ argp = stack;
+
+ if ( cif->rtype->type == FFI_TYPE_STRUCT ) {
+ *rvalue = *(void **) argp;
+ argp += 4;
+ }
+
+ p_argv = avalue;
+
+ for (i = cif->nargs, p_arg = cif->arg_types; (i != 0); i--, p_arg++)
+ {
+ size_t z;
+
+ /* Align if necessary */
+ if ((sizeof(char *) - 1) & (size_t) argp) {
+ argp = (char *) ALIGN(argp, sizeof(char*));
+ }
+
+ z = (*p_arg)->size;
+
+ /* because we're little endian, this is what it turns into. */
+
+ *p_argv = (void*) argp;
+
+ p_argv++;
+ argp += z;
+ }
+
+ return;
+}
+
+/* the cif must already be prep'ed */
+extern void ffi_closure_OUTER();
+
+ffi_status
+ffi_prep_closure (ffi_closure* closure,
+ ffi_cif* cif,
+ void (*fun)(ffi_cif*,void*,void**,void*),
+ void *user_data)
+{
+ short bytes;
+ char *tramp;
+#ifdef _WIN64
+ int mask;
+#endif
+ FFI_ASSERT (cif->abi == FFI_SYSV);
+
+ if (cif->abi == FFI_SYSV)
+ bytes = 0;
+#if !defined(_WIN64)
+ else if (cif->abi == FFI_STDCALL)
+ bytes = cif->bytes;
+#endif
+ else
+ return FFI_BAD_ABI;
+
+ tramp = &closure->tramp[0];
+
+#define BYTES(text) memcpy(tramp, text, sizeof(text)), tramp += sizeof(text)-1
+#define POINTER(x) *(void**)tramp = (void*)(x), tramp += sizeof(void*)
+#define SHORT(x) *(short*)tramp = x, tramp += sizeof(short)
+#define INT(x) *(int*)tramp = x, tramp += sizeof(int)
+
+#ifdef _WIN64
+ if (cif->nargs >= 1 &&
+ (cif->arg_types[0]->type == FFI_TYPE_FLOAT
+ || cif->arg_types[0]->type == FFI_TYPE_DOUBLE))
+ mask |= 1;
+ if (cif->nargs >= 2 &&
+ (cif->arg_types[1]->type == FFI_TYPE_FLOAT
+ || cif->arg_types[1]->type == FFI_TYPE_DOUBLE))
+ mask |= 2;
+ if (cif->nargs >= 3 &&
+ (cif->arg_types[2]->type == FFI_TYPE_FLOAT
+ || cif->arg_types[2]->type == FFI_TYPE_DOUBLE))
+ mask |= 4;
+ if (cif->nargs >= 4 &&
+ (cif->arg_types[3]->type == FFI_TYPE_FLOAT
+ || cif->arg_types[3]->type == FFI_TYPE_DOUBLE))
+ mask |= 8;
+
+ /* 41 BB ---- mov r11d,mask */
+ BYTES("\x41\xBB"); INT(mask);
+
+ /* 48 B8 -------- mov rax, closure */
+ BYTES("\x48\xB8"); POINTER(closure);
+
+ /* 49 BA -------- mov r10, ffi_closure_OUTER */
+ BYTES("\x49\xBA"); POINTER(ffi_closure_OUTER);
+
+ /* 41 FF E2 jmp r10 */
+ BYTES("\x41\xFF\xE2");
+
+#else
+
+ /* mov ecx, closure */
+ BYTES("\xb9"); POINTER(closure);
+
+ /* mov edx, esp */
+ BYTES("\x8b\xd4");
+
+ /* call ffi_closure_SYSV */
+ BYTES("\xe8"); POINTER((char*)&ffi_closure_SYSV - (tramp + 4));
+
+ /* ret bytes */
+ BYTES("\xc2");
+ SHORT(bytes);
+
+#endif
+
+ if (tramp - &closure->tramp[0] > FFI_TRAMPOLINE_SIZE)
+ Py_FatalError("FFI_TRAMPOLINE_SIZE too small in " __FILE__);
+
+ closure->cif = cif;
+ closure->user_data = user_data;
+ closure->fun = fun;
+
+ return FFI_OK;
+}
diff --git a/c/libffi_msvc/ffi.h b/c/libffi_msvc/ffi.h
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/ffi.h
@@ -0,0 +1,315 @@
+/* -----------------------------------------------------------------*-C-*-
+ libffi 2.00-beta - Copyright (c) 1996-2003 Red Hat, Inc.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+
+ ----------------------------------------------------------------------- */
+
+/* -------------------------------------------------------------------
+ The basic API is described in the README file.
+
+ The raw API is designed to bypass some of the argument packing
+ and unpacking on architectures for which it can be avoided.
+
+ The closure API allows interpreted functions to be packaged up
+ inside a C function pointer, so that they can be called as C functions,
+ with no understanding on the client side that they are interpreted.
+ It can also be used in other cases in which it is necessary to package
+ up a user specified parameter and a function pointer as a single
+ function pointer.
+
+ The closure API must be implemented in order to get its functionality,
+ e.g. for use by gij. Routines are provided to emulate the raw API
+ if the underlying platform doesn't allow faster implementation.
+
+ More details on the raw and cloure API can be found in:
+
+ http://gcc.gnu.org/ml/java/1999-q3/msg00138.html
+
+ and
+
+ http://gcc.gnu.org/ml/java/1999-q3/msg00174.html
+ -------------------------------------------------------------------- */
+
+#ifndef LIBFFI_H
+#define LIBFFI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Specify which architecture libffi is configured for. */
+//XXX #define X86
+
+/* ---- System configuration information --------------------------------- */
+
+#include <ffitarget.h>
+
+#ifndef LIBFFI_ASM
+
+#include <stddef.h>
+#include <limits.h>
+
+/* LONG_LONG_MAX is not always defined (not if STRICT_ANSI, for example).
+ But we can find it either under the correct ANSI name, or under GNU
+ C's internal name. */
+#ifdef LONG_LONG_MAX
+# define FFI_LONG_LONG_MAX LONG_LONG_MAX
+#else
+# ifdef LLONG_MAX
+# define FFI_LONG_LONG_MAX LLONG_MAX
+# else
+# ifdef __GNUC__
+# define FFI_LONG_LONG_MAX __LONG_LONG_MAX__
+# endif
+# ifdef _MSC_VER
+# define FFI_LONG_LONG_MAX _I64_MAX
+# endif
+# endif
+#endif
+
+#if SCHAR_MAX == 127
+# define ffi_type_uchar ffi_type_uint8
+# define ffi_type_schar ffi_type_sint8
+#else
+ #error "char size not supported"
+#endif
+
+#if SHRT_MAX == 32767
+# define ffi_type_ushort ffi_type_uint16
+# define ffi_type_sshort ffi_type_sint16
+#elif SHRT_MAX == 2147483647
+# define ffi_type_ushort ffi_type_uint32
+# define ffi_type_sshort ffi_type_sint32
+#else
+ #error "short size not supported"
+#endif
+
+#if INT_MAX == 32767
+# define ffi_type_uint ffi_type_uint16
+# define ffi_type_sint ffi_type_sint16
+#elif INT_MAX == 2147483647
+# define ffi_type_uint ffi_type_uint32
+# define ffi_type_sint ffi_type_sint32
+#elif INT_MAX == 9223372036854775807
+# define ffi_type_uint ffi_type_uint64
+# define ffi_type_sint ffi_type_sint64
+#else
+ #error "int size not supported"
+#endif
+
+#define ffi_type_ulong ffi_type_uint64
+#define ffi_type_slong ffi_type_sint64
+#if LONG_MAX == 2147483647
+# if FFI_LONG_LONG_MAX != 9223372036854775807
+ #error "no 64-bit data type supported"
+# endif
+#elif LONG_MAX != 9223372036854775807
+ #error "long size not supported"
+#endif
+
+/* The closure code assumes that this works on pointers, i.e. a size_t */
+/* can hold a pointer. */
+
+typedef struct _ffi_type
+{
+ size_t size;
+ unsigned short alignment;
+ unsigned short type;
+ /*@null@*/ struct _ffi_type **elements;
+} ffi_type;
+
+/* These are defined in types.c */
+extern ffi_type ffi_type_void;
+extern ffi_type ffi_type_uint8;
+extern ffi_type ffi_type_sint8;
+extern ffi_type ffi_type_uint16;
+extern ffi_type ffi_type_sint16;
+extern ffi_type ffi_type_uint32;
+extern ffi_type ffi_type_sint32;
+extern ffi_type ffi_type_uint64;
+extern ffi_type ffi_type_sint64;
+extern ffi_type ffi_type_float;
+extern ffi_type ffi_type_double;
+extern ffi_type ffi_type_longdouble;
+extern ffi_type ffi_type_pointer;
+
+
+typedef enum {
+ FFI_OK = 0,
+ FFI_BAD_TYPEDEF,
+ FFI_BAD_ABI
+} ffi_status;
+
+typedef unsigned FFI_TYPE;
+
+typedef struct {
+ ffi_abi abi;
+ unsigned nargs;
+ /*@dependent@*/ ffi_type **arg_types;
+ /*@dependent@*/ ffi_type *rtype;
+ unsigned bytes;
+ unsigned flags;
+#ifdef FFI_EXTRA_CIF_FIELDS
+ FFI_EXTRA_CIF_FIELDS;
+#endif
+} ffi_cif;
+
+/* ---- Definitions for the raw API -------------------------------------- */
+
+#ifdef _WIN64
+#define FFI_SIZEOF_ARG 8
+#else
+#define FFI_SIZEOF_ARG 4
+#endif
+
+typedef union {
+ ffi_sarg sint;
+ ffi_arg uint;
+ float flt;
+ char data[FFI_SIZEOF_ARG];
+ void* ptr;
+} ffi_raw;
+
+void ffi_raw_call (/*@dependent@*/ ffi_cif *cif,
+ void (*fn)(),
+ /*@out@*/ void *rvalue,
+ /*@dependent@*/ ffi_raw *avalue);
+
+void ffi_ptrarray_to_raw (ffi_cif *cif, void **args, ffi_raw *raw);
+void ffi_raw_to_ptrarray (ffi_cif *cif, ffi_raw *raw, void **args);
+size_t ffi_raw_size (ffi_cif *cif);
+
+/* This is analogous to the raw API, except it uses Java parameter */
+/* packing, even on 64-bit machines. I.e. on 64-bit machines */
+/* longs and doubles are followed by an empty 64-bit word. */
+
+void ffi_java_raw_call (/*@dependent@*/ ffi_cif *cif,
+ void (*fn)(),
+ /*@out@*/ void *rvalue,
+ /*@dependent@*/ ffi_raw *avalue);
+
+void ffi_java_ptrarray_to_raw (ffi_cif *cif, void **args, ffi_raw *raw);
+void ffi_java_raw_to_ptrarray (ffi_cif *cif, ffi_raw *raw, void **args);
+size_t ffi_java_raw_size (ffi_cif *cif);
+
+/* ---- Definitions for closures ----------------------------------------- */
+
+#if FFI_CLOSURES
+
+typedef struct {
+ char tramp[FFI_TRAMPOLINE_SIZE];
+ ffi_cif *cif;
+ void (*fun)(ffi_cif*,void*,void**,void*);
+ void *user_data;
+} ffi_closure;
+
+ffi_status
+ffi_prep_closure (ffi_closure*,
+ ffi_cif *,
+ void (*fun)(ffi_cif*,void*,void**,void*),
+ void *user_data);
+
+typedef struct {
+ char tramp[FFI_TRAMPOLINE_SIZE];
+
+ 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_raw*,void*);
+ void *user_data;
+
+} ffi_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_java_raw_closure (ffi_raw_closure*,
+ ffi_cif *cif,
+ void (*fun)(ffi_cif*,void*,ffi_raw*,void*),
+ void *user_data);
+
+#endif /* FFI_CLOSURES */
+
+/* ---- Public interface definition -------------------------------------- */
+
+ffi_status ffi_prep_cif(/*@out@*/ /*@partial@*/ ffi_cif *cif,
+ ffi_abi abi,
+ unsigned int nargs,
+ /*@dependent@*/ /*@out@*/ /*@partial@*/ ffi_type *rtype,
+ /*@dependent@*/ ffi_type **atypes);
+
+int
+ffi_call(/*@dependent@*/ ffi_cif *cif,
+ void (*fn)(),
+ /*@out@*/ void *rvalue,
+ /*@dependent@*/ void **avalue);
+
+/* Useful for eliminating compiler warnings */
+#define FFI_FN(f) ((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 1
+#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
+
+/* This should always refer to the last type code (for sanity checks) */
+#define FFI_TYPE_LAST FFI_TYPE_POINTER
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/c/libffi_msvc/ffi_common.h b/c/libffi_msvc/ffi_common.h
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/ffi_common.h
@@ -0,0 +1,77 @@
+/* -----------------------------------------------------------------------
+ ffi_common.h - Copyright (c) 1996 Red Hat, Inc.
+
+ Common internal definitions and macros. Only necessary for building
+ libffi.
+ ----------------------------------------------------------------------- */
+
+#ifndef FFI_COMMON_H
+#define FFI_COMMON_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <fficonfig.h>
+#include <malloc.h>
+
+/* Check for the existence of memcpy. */
+#if STDC_HEADERS
+# include <string.h>
+#else
+# ifndef HAVE_MEMCPY
+# define memcpy(d, s, n) bcopy ((s), (d), (n))
+# endif
+#endif
+
+#if defined(FFI_DEBUG)
+#include <stdio.h>
+#endif
+
+#ifdef FFI_DEBUG
+/*@exits@*/ void ffi_assert(/*@temp@*/ char *expr, /*@temp@*/ char *file, int line);
+void ffi_stop_here(void);
+void ffi_type_test(/*@temp@*/ /*@out@*/ ffi_type *a, /*@temp@*/ char *file, int line);
+
+#define FFI_ASSERT(x) ((x) ? (void)0 : ffi_assert(#x, __FILE__,__LINE__))
+#define FFI_ASSERT_AT(x, f, l) ((x) ? 0 : ffi_assert(#x, (f), (l)))
+#define FFI_ASSERT_VALID_TYPE(x) ffi_type_test (x, __FILE__, __LINE__)
+#else
+#define FFI_ASSERT(x)
+#define FFI_ASSERT_AT(x, f, l)
+#define FFI_ASSERT_VALID_TYPE(x)
+#endif
+
+#define ALIGN(v, a) (((((size_t) (v))-1) | ((a)-1))+1)
+
+/* Perform machine dependent cif processing */
+ffi_status ffi_prep_cif_machdep(ffi_cif *cif);
+
+/* Extended cif, used in callback from assembly routine */
+typedef struct
+{
+ /*@dependent@*/ ffi_cif *cif;
+ /*@dependent@*/ void *rvalue;
+ /*@dependent@*/ void **avalue;
+} extended_cif;
+
+/* Terse sized type definitions. */
+typedef unsigned int UINT8 __attribute__((__mode__(__QI__)));
+typedef signed int SINT8 __attribute__((__mode__(__QI__)));
+typedef unsigned int UINT16 __attribute__((__mode__(__HI__)));
+typedef signed int SINT16 __attribute__((__mode__(__HI__)));
+typedef unsigned int UINT32 __attribute__((__mode__(__SI__)));
+typedef signed int SINT32 __attribute__((__mode__(__SI__)));
+typedef unsigned int UINT64 __attribute__((__mode__(__DI__)));
+typedef signed int SINT64 __attribute__((__mode__(__DI__)));
+
+typedef float FLOAT32;
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
diff --git a/c/libffi_msvc/fficonfig.h b/c/libffi_msvc/fficonfig.h
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/fficonfig.h
@@ -0,0 +1,96 @@
+/* fficonfig.h. Originally created by configure, now hand_maintained for MSVC. */
+
+/* fficonfig.h. Generated automatically by configure. */
+/* fficonfig.h.in. Generated automatically from configure.in by autoheader. */
+
+/* Define this for MSVC, but not for mingw32! */
+#ifdef _MSC_VER
+#define __attribute__(x) /* */
+#endif
+#define alloca _alloca
+
+/*----------------------------------------------------------------*/
+
+/* Define if using alloca.c. */
+/* #undef C_ALLOCA */
+
+/* Define to one of _getb67, GETB67, getb67 for Cray-2 and Cray-YMP systems.
+ This function is required for alloca.c support on those systems. */
+/* #undef CRAY_STACKSEG_END */
+
+/* Define if you have alloca, as a function or macro. */
+#define HAVE_ALLOCA 1
+
+/* Define if you have <alloca.h> and it should be used (not on Ultrix). */
+/* #define HAVE_ALLOCA_H 1 */
+
+/* If using the C implementation of alloca, define if you know the
+ direction of stack growth for your system; otherwise it will be
+ automatically deduced at run-time.
+ STACK_DIRECTION > 0 => grows toward higher addresses
+ STACK_DIRECTION < 0 => grows toward lower addresses
+ STACK_DIRECTION = 0 => direction of growth unknown
+ */
+/* #undef STACK_DIRECTION */
+
+/* Define if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define if you have the memcpy function. */
+#define HAVE_MEMCPY 1
+
+/* Define if read-only mmap of a plain file works. */
+//#define HAVE_MMAP_FILE 1
+
+/* Define if mmap of /dev/zero works. */
+//#define HAVE_MMAP_DEV_ZERO 1
+
+/* Define if mmap with MAP_ANON(YMOUS) works. */
+//#define HAVE_MMAP_ANON 1
+
+/* The number of bytes in type double */
+#define SIZEOF_DOUBLE 8
+
+/* The number of bytes in type long double */
+#define SIZEOF_LONG_DOUBLE 12
+
+/* Define if you have the long double type and it is bigger than a double */
+#define HAVE_LONG_DOUBLE 1
+
+/* whether byteorder is bigendian */
+/* #undef WORDS_BIGENDIAN */
+
+/* Define if the host machine stores words of multi-word integers in
+ big-endian order. */
+/* #undef HOST_WORDS_BIG_ENDIAN */
+
+/* 1234 = LIL_ENDIAN, 4321 = BIGENDIAN */
+#define BYTEORDER 1234
+
+/* Define if your assembler and linker support unaligned PC relative relocs. */
+/* #undef HAVE_AS_SPARC_UA_PCREL */
+
+/* Define if your assembler supports .register. */
+/* #undef HAVE_AS_REGISTER_PSEUDO_OP */
+
+/* Define if .eh_frame sections should be read-only. */
+/* #undef HAVE_RO_EH_FRAME */
+
+/* Define to the flags needed for the .section .eh_frame directive. */
+/* #define EH_FRAME_FLAGS "aw" */
+
+/* Define to the flags needed for the .section .eh_frame directive. */
+/* #define EH_FRAME_FLAGS "aw" */
+
+/* Define this if you want extra debugging. */
+/* #undef FFI_DEBUG */
+
+/* Define this is you do not want support for aggregate types. */
+/* #undef FFI_NO_STRUCTS */
+
+/* Define this is you do not want support for the raw API. */
+/* #undef FFI_NO_RAW_API */
+
+/* Define this if you are using Purify and want to suppress spurious messages. */
+/* #undef USING_PURIFY */
+
diff --git a/c/libffi_msvc/ffitarget.h b/c/libffi_msvc/ffitarget.h
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/ffitarget.h
@@ -0,0 +1,85 @@
+/* -----------------------------------------------------------------*-C-*-
+ ffitarget.h - Copyright (c) 1996-2003 Red Hat, Inc.
+ Target configuration macros for x86 and x86-64.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+
+ ----------------------------------------------------------------------- */
+
+#ifndef LIBFFI_TARGET_H
+#define LIBFFI_TARGET_H
+
+/* ---- System specific configurations ----------------------------------- */
+
+#if defined (X86_64) && defined (__i386__)
+#undef X86_64
+#define X86
+#endif
+
+/* ---- Generic type definitions ----------------------------------------- */
+
+#ifndef LIBFFI_ASM
+#ifndef _WIN64
+typedef unsigned long ffi_arg;
+#else
+typedef unsigned __int64 ffi_arg;
+#endif
+typedef signed long ffi_sarg;
+
+typedef enum ffi_abi {
+ FFI_FIRST_ABI = 0,
+
+ /* ---- Intel x86 Win32 ---------- */
+ FFI_SYSV,
+#ifndef _WIN64
+ FFI_STDCALL,
+#endif
+ /* TODO: Add fastcall support for the sake of completeness */
+ FFI_DEFAULT_ABI = FFI_SYSV,
+
+ /* ---- Intel x86 and AMD x86-64 - */
+/* #if !defined(X86_WIN32) && (defined(__i386__) || defined(__x86_64__)) */
+/* FFI_SYSV, */
+/* FFI_UNIX64,*/ /* Unix variants all use the same ABI for x86-64 */
+/* #ifdef __i386__ */
+/* FFI_DEFAULT_ABI = FFI_SYSV, */
+/* #else */
+/* FFI_DEFAULT_ABI = FFI_UNIX64, */
+/* #endif */
+/* #endif */
+
+ FFI_LAST_ABI = FFI_DEFAULT_ABI + 1
+} ffi_abi;
+#endif
+
+/* ---- Definitions for closures ----------------------------------------- */
+
+#define FFI_CLOSURES 1
+
+#ifdef _WIN64
+#define FFI_TRAMPOLINE_SIZE 29
+#define FFI_NATIVE_RAW_API 0
+#else
+#define FFI_TRAMPOLINE_SIZE 15
+#define FFI_NATIVE_RAW_API 1 /* x86 has native raw api support */
+#endif
+
+#endif
+
diff --git a/c/libffi_msvc/prep_cif.c b/c/libffi_msvc/prep_cif.c
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/prep_cif.c
@@ -0,0 +1,175 @@
+/* -----------------------------------------------------------------------
+ prep_cif.c - Copyright (c) 1996, 1998 Red Hat, Inc.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#include <ffi.h>
+#include <ffi_common.h>
+#include <stdlib.h>
+
+
+/* Round up to FFI_SIZEOF_ARG. */
+
+#define STACK_ARG_SIZE(x) ALIGN(x, FFI_SIZEOF_ARG)
+
+/* Perform machine independent initialization of aggregate type
+ specifications. */
+
+static ffi_status initialize_aggregate(/*@out@*/ ffi_type *arg)
+{
+ ffi_type **ptr;
+
+ FFI_ASSERT(arg != NULL);
+
+ /*@-usedef@*/
+
+ FFI_ASSERT(arg->elements != NULL);
+ FFI_ASSERT(arg->size == 0);
+ FFI_ASSERT(arg->alignment == 0);
+
+ ptr = &(arg->elements[0]);
+
+ while ((*ptr) != NULL)
+ {
+ if (((*ptr)->size == 0) && (initialize_aggregate((*ptr)) != FFI_OK))
+ return FFI_BAD_TYPEDEF;
+
+ /* Perform a sanity check on the argument type */
+ FFI_ASSERT_VALID_TYPE(*ptr);
+
+ arg->size = ALIGN(arg->size, (*ptr)->alignment);
+ arg->size += (*ptr)->size;
+
+ arg->alignment = (arg->alignment > (*ptr)->alignment) ?
+ arg->alignment : (*ptr)->alignment;
+
+ ptr++;
+ }
+
+ /* Structure size includes tail padding. This is important for
+ structures that fit in one register on ABIs like the PowerPC64
+ Linux ABI that right justify small structs in a register.
+ It's also needed for nested structure layout, for example
+ struct A { long a; char b; }; struct B { struct A x; char y; };
+ should find y at an offset of 2*sizeof(long) and result in a
+ total size of 3*sizeof(long). */
+ arg->size = ALIGN (arg->size, arg->alignment);
+
+ if (arg->size == 0)
+ return FFI_BAD_TYPEDEF;
+ else
+ return FFI_OK;
+
+ /*@=usedef@*/
+}
+
+/* Perform machine independent ffi_cif preparation, then call
+ machine dependent routine. */
+
+ffi_status ffi_prep_cif(/*@out@*/ /*@partial@*/ ffi_cif *cif,
+ ffi_abi abi, unsigned int nargs,
+ /*@dependent@*/ /*@out@*/ /*@partial@*/ ffi_type *rtype,
+ /*@dependent@*/ ffi_type **atypes)
+{
+ unsigned bytes = 0;
+ unsigned int i;
+ ffi_type **ptr;
+
+ FFI_ASSERT(cif != NULL);
+ FFI_ASSERT((abi > FFI_FIRST_ABI) && (abi <= FFI_DEFAULT_ABI));
+
+ cif->abi = abi;
+ cif->arg_types = atypes;
+ cif->nargs = nargs;
+ cif->rtype = rtype;
+
+ cif->flags = 0;
+
+ /* Initialize the return type if necessary */
+ /*@-usedef@*/
+ if ((cif->rtype->size == 0) && (initialize_aggregate(cif->rtype) != FFI_OK))
+ return FFI_BAD_TYPEDEF;
+ /*@=usedef@*/
+
+ /* Perform a sanity check on the return type */
+ FFI_ASSERT_VALID_TYPE(cif->rtype);
+
+ /* x86-64 and s390 stack space allocation is handled in prep_machdep. */
+#if !defined M68K && !defined __x86_64__ && !defined S390
+ /* Make space for the return structure pointer */
+ if (cif->rtype->type == FFI_TYPE_STRUCT
+ /* MSVC returns small structures in registers. But we have a different
+ workaround: pretend int32 or int64 return type, and converting to
+ structure afterwards. */
+#ifdef SPARC
+ && (cif->abi != FFI_V9 || cif->rtype->size > 32)
+#endif
+ )
+ bytes = STACK_ARG_SIZE(sizeof(void*));
+#endif
+
+ for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++)
+ {
+
+ /* Initialize any uninitialized aggregate type definitions */
+ if (((*ptr)->size == 0) && (initialize_aggregate((*ptr)) != FFI_OK))
+ return FFI_BAD_TYPEDEF;
+
+ /* Perform a sanity check on the argument type, do this
+ check after the initialization. */
+ FFI_ASSERT_VALID_TYPE(*ptr);
+
+#if !defined __x86_64__ && !defined S390
+#ifdef SPARC
+ if (((*ptr)->type == FFI_TYPE_STRUCT
+ && ((*ptr)->size > 16 || cif->abi != FFI_V9))
+ || ((*ptr)->type == FFI_TYPE_LONGDOUBLE
+ && cif->abi != FFI_V9))
+ bytes += sizeof(void*);
+ else
+#endif
+ {
+#if !defined(_MSC_VER) && !defined(__MINGW32__)
+ /* Don't know if this is a libffi bug or not. At least on
+ Windows with MSVC, function call parameters are *not*
+ aligned in the same way as structure fields are, they are
+ only aligned in integer boundaries.
+
+ This doesn't do any harm for cdecl functions and closures,
+ since the caller cleans up the stack, but it is wrong for
+ stdcall functions where the callee cleans.
+ */
+
+ /* Add any padding if necessary */
+ if (((*ptr)->alignment - 1) & bytes)
+ bytes = ALIGN(bytes, (*ptr)->alignment);
+
+#endif
+ bytes += STACK_ARG_SIZE((*ptr)->size);
+ }
+#endif
+ }
+
+ cif->bytes = bytes;
+
+ /* Perform machine dependent cif processing */
+ return ffi_prep_cif_machdep(cif);
+}
diff --git a/c/libffi_msvc/types.c b/c/libffi_msvc/types.c
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/types.c
@@ -0,0 +1,104 @@
+/* -----------------------------------------------------------------------
+ types.c - Copyright (c) 1996, 1998 Red Hat, Inc.
+
+ Predefined ffi_types needed by libffi.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#include <ffi.h>
+#include <ffi_common.h>
+
+/* Type definitions */
+
+#define FFI_INTEGRAL_TYPEDEF(n, s, a, t) ffi_type ffi_type_##n = { s, a, t, NULL }
+#define FFI_AGGREGATE_TYPEDEF(n, e) ffi_type ffi_type_##n = { 0, 0, FFI_TYPE_STRUCT, e }
+
+/* Size and alignment are fake here. They must not be 0. */
+FFI_INTEGRAL_TYPEDEF(void, 1, 1, FFI_TYPE_VOID);
+
+FFI_INTEGRAL_TYPEDEF(uint8, 1, 1, FFI_TYPE_UINT8);
+FFI_INTEGRAL_TYPEDEF(sint8, 1, 1, FFI_TYPE_SINT8);
+FFI_INTEGRAL_TYPEDEF(uint16, 2, 2, FFI_TYPE_UINT16);
+FFI_INTEGRAL_TYPEDEF(sint16, 2, 2, FFI_TYPE_SINT16);
+FFI_INTEGRAL_TYPEDEF(uint32, 4, 4, FFI_TYPE_UINT32);
+FFI_INTEGRAL_TYPEDEF(sint32, 4, 4, FFI_TYPE_SINT32);
+FFI_INTEGRAL_TYPEDEF(float, 4, 4, FFI_TYPE_FLOAT);
+
+#if defined ALPHA || defined SPARC64 || defined X86_64 || defined S390X \
+ || defined IA64
+
+FFI_INTEGRAL_TYPEDEF(pointer, 8, 8, FFI_TYPE_POINTER);
+
+#else
+
+FFI_INTEGRAL_TYPEDEF(pointer, 4, 4, FFI_TYPE_POINTER);
+
+#endif
+
+#if defined X86 || defined X86_WIN32 || defined ARM || defined M68K
+
+FFI_INTEGRAL_TYPEDEF(uint64, 8, 4, FFI_TYPE_UINT64);
+FFI_INTEGRAL_TYPEDEF(sint64, 8, 4, FFI_TYPE_SINT64);
+
+#elif defined SH
+
+FFI_INTEGRAL_TYPEDEF(uint64, 8, 4, FFI_TYPE_UINT64);
+FFI_INTEGRAL_TYPEDEF(sint64, 8, 4, FFI_TYPE_SINT64);
+
+#else
+
+FFI_INTEGRAL_TYPEDEF(uint64, 8, 8, FFI_TYPE_UINT64);
+FFI_INTEGRAL_TYPEDEF(sint64, 8, 8, FFI_TYPE_SINT64);
+
+#endif
+
+
+#if defined X86 || defined X86_WIN32 || defined M68K
+
+FFI_INTEGRAL_TYPEDEF(double, 8, 4, FFI_TYPE_DOUBLE);
+FFI_INTEGRAL_TYPEDEF(longdouble, 12, 4, FFI_TYPE_LONGDOUBLE);
+
+#elif defined ARM || defined SH || defined POWERPC_AIX || defined POWERPC_DARWIN
+
+FFI_INTEGRAL_TYPEDEF(double, 8, 4, FFI_TYPE_DOUBLE);
+FFI_INTEGRAL_TYPEDEF(longdouble, 8, 4, FFI_TYPE_LONGDOUBLE);
+
+#elif defined SPARC
+
+FFI_INTEGRAL_TYPEDEF(double, 8, 8, FFI_TYPE_DOUBLE);
+#ifdef SPARC64
+FFI_INTEGRAL_TYPEDEF(longdouble, 16, 16, FFI_TYPE_LONGDOUBLE);
+#else
+FFI_INTEGRAL_TYPEDEF(longdouble, 16, 8, FFI_TYPE_LONGDOUBLE);
+#endif
+
+#elif defined X86_64
+
+FFI_INTEGRAL_TYPEDEF(double, 8, 8, FFI_TYPE_DOUBLE);
+FFI_INTEGRAL_TYPEDEF(longdouble, 16, 16, FFI_TYPE_LONGDOUBLE);
+
+#else
+
+FFI_INTEGRAL_TYPEDEF(double, 8, 8, FFI_TYPE_DOUBLE);
+FFI_INTEGRAL_TYPEDEF(longdouble, 8, 8, FFI_TYPE_LONGDOUBLE);
+
+#endif
+
diff --git a/c/libffi_msvc/win32.S b/c/libffi_msvc/win32.S
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/win32.S
@@ -0,0 +1,243 @@
+/* -----------------------------------------------------------------------
+ win32.S - Copyright (c) 1996, 1998, 2001, 2002 Red Hat, Inc.
+ Copyright (c) 2001 John Beniton
+ Copyright (c) 2002 Ranjit Mathew
+
+
+ X86 Foreign Function Interface
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+#define LIBFFI_ASM
+#include <fficonfig.h>
+#include <ffi.h>
+
+.text
+
+.globl ffi_prep_args
+
+ # This assumes we are using gas.
+ .balign 16
+.globl _ffi_call_SYSV
+
+_ffi_call_SYSV:
+ pushl %ebp
+ movl %esp,%ebp
+
+ #THe: save previous %esi, and store the current stack pointer in %esi
+ pushl %esi
+ movl %esp,%esi
+
+ # Make room for all of the new args.
+ movl 16(%ebp),%ecx
+ subl %ecx,%esp
+
+ movl %esp,%eax
+
+ # Place all of the ffi_prep_args in position
+ pushl 12(%ebp)
+ pushl %eax
+ call *8(%ebp)
+
+ # Return stack to previous state and call the function
+ addl $8,%esp
+
+ # FIXME: Align the stack to a 128-bit boundary to avoid
+ # potential performance hits.
+
+ call *28(%ebp)
+
+ # Remove the space we pushed for the args
+ movl 16(%ebp),%ecx
+ addl %ecx,%esp
+
+ sub %esp,%esi # calculate stack pointer difference
+
+ # Load %ecx with the return type code
+ movl 20(%ebp),%ecx
+
+ # If the return value pointer is NULL, assume no return value.
+ cmpl $0,24(%ebp)
+ jne retint
+
+ # Even if there is no space for the return value, we are
+ # obliged to handle floating-point values.
+ cmpl $FFI_TYPE_FLOAT,%ecx
+ jne noretval
+ fstp %st(0)
+
+ jmp epilogue
+
+retint:
+ cmpl $FFI_TYPE_INT,%ecx
+ jne retfloat
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ movl %eax,0(%ecx)
+ jmp epilogue
+
+retfloat:
+ cmpl $FFI_TYPE_FLOAT,%ecx
+ jne retdouble
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ fstps (%ecx)
+ jmp epilogue
+
+retdouble:
+ cmpl $FFI_TYPE_DOUBLE,%ecx
+ jne retlongdouble
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ fstpl (%ecx)
+ jmp epilogue
+
+retlongdouble:
+ cmpl $FFI_TYPE_LONGDOUBLE,%ecx
+ jne retint64
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ fstpt (%ecx)
+ jmp epilogue
+
+retint64:
+ cmpl $FFI_TYPE_SINT64,%ecx
+ jne retstruct
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ movl %eax,0(%ecx)
+ movl %edx,4(%ecx)
+
+retstruct:
+ # Nothing to do!
+
+noretval:
+epilogue:
+ movl %esi,%eax # return the stack pointer detlta in %eax
+ popl %esi # restore previous %esi
+ movl %ebp,%esp
+ popl %ebp
+ ret
+
+.ffi_call_SYSV_end:
+
+ # This assumes we are using gas.
+ .balign 16
+.globl _ffi_call_STDCALL
+
+_ffi_call_STDCALL:
+ pushl %ebp
+ movl %esp,%ebp
+
+ #THe: save previous %esi, and store the current stack pointer in %esi
+ pushl %esi
+ movl %esp,%esi
+
+ # Make room for all of the new args.
+ movl 16(%ebp),%ecx
+ subl %ecx,%esp
+
+ movl %esp,%eax
+
+ # Place all of the ffi_prep_args in position
+ pushl 12(%ebp)
+ pushl %eax
+ call *8(%ebp)
+
+ # Return stack to previous state and call the function
+ addl $8,%esp
+
+ # FIXME: Align the stack to a 128-bit boundary to avoid
+ # potential performance hits.
+
+ call *28(%ebp)
+
+ sub %esp,%esi # difference in stack
+
+ # stdcall functions pop arguments off the stack themselves
+
+ # Load %ecx with the return type code
+ movl 20(%ebp),%ecx
+
+ # If the return value pointer is NULL, assume no return value.
+ cmpl $0,24(%ebp)
+ jne sc_retint
+
+ # Even if there is no space for the return value, we are
+ # obliged to handle floating-point values.
+ cmpl $FFI_TYPE_FLOAT,%ecx
+ jne sc_noretval
+ fstp %st(0)
+
+ jmp sc_epilogue
+
+sc_retint:
+ cmpl $FFI_TYPE_INT,%ecx
+ jne sc_retfloat
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ movl %eax,0(%ecx)
+ jmp sc_epilogue
+
+sc_retfloat:
+ cmpl $FFI_TYPE_FLOAT,%ecx
+ jne sc_retdouble
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ fstps (%ecx)
+ jmp sc_epilogue
+
+sc_retdouble:
+ cmpl $FFI_TYPE_DOUBLE,%ecx
+ jne sc_retlongdouble
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ fstpl (%ecx)
+ jmp sc_epilogue
+
+sc_retlongdouble:
+ cmpl $FFI_TYPE_LONGDOUBLE,%ecx
+ jne sc_retint64
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ fstpt (%ecx)
+ jmp sc_epilogue
+
+sc_retint64:
+ cmpl $FFI_TYPE_SINT64,%ecx
+ jne sc_retstruct
+ # Load %ecx with the pointer to storage for the return value
+ movl 24(%ebp),%ecx
+ movl %eax,0(%ecx)
+ movl %edx,4(%ecx)
+
+sc_retstruct:
+ # Nothing to do!
+
+sc_noretval:
+sc_epilogue:
+ movl %esi,%eax # return the stack difference
+ popl %esi # restore previous %esi value
+ movl %ebp,%esp
+ popl %ebp
+ ret
+
+.ffi_call_STDCALL_end:
diff --git a/c/libffi_msvc/win32.c b/c/libffi_msvc/win32.c
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/win32.c
@@ -0,0 +1,267 @@
+/* -----------------------------------------------------------------------
+ win32.S - Copyright (c) 1996, 1998, 2001, 2002 Red Hat, Inc.
+ Copyright (c) 2001 John Beniton
+ Copyright (c) 2002 Ranjit Mathew
+
+
+ X86 Foreign Function Interface
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ ``Software''), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be included
+ in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+ ----------------------------------------------------------------------- */
+
+/* theller: almost verbatim translation from gas syntax to MSVC inline
+ assembler code. */
+
+/* theller: ffi_call_SYSV and ffi_call_STDCALL now return an integer - the
+ difference of the stack pointer before and after the function call. If
+ everything is ok, zero is returned. If stdcall functions are passed the
+ wrong number of arguments, the difference will be nonzero. */
+
+#include <ffi.h>
+#include <ffi_common.h>
+
+__declspec(naked) int
+ffi_call_SYSV(void (* prepfunc)(char *, extended_cif *), /* 8 */
+ extended_cif *ecif, /* 12 */
+ unsigned bytes, /* 16 */
+ unsigned flags, /* 20 */
+ unsigned *rvalue, /* 24 */
+ void (*fn)()) /* 28 */
+{
+ _asm {
+ push ebp
+ mov ebp, esp
+
+ push esi // NEW: this register must be preserved across function calls
+// XXX SAVE ESP NOW!
+ mov esi, esp // save stack pointer before the call
+
+// Make room for all of the new args.
+ mov ecx, [ebp+16]
+ sub esp, ecx // sub esp, bytes
+
+ mov eax, esp
+
+// Place all of the ffi_prep_args in position
+ push [ebp + 12] // ecif
+ push eax
+ call [ebp + 8] // prepfunc
+
+// Return stack to previous state and call the function
+ add esp, 8
+// FIXME: Align the stack to a 128-bit boundary to avoid
+// potential performance hits.
+ call [ebp + 28]
+// Remove the space we pushed for the args
+ mov ecx, [ebp + 16]
+ add esp, ecx
+
+// XXX ASSERT THAT ESP IS THE SAME NOW THAN BEFORE!
+ sub esi, esp
+
+// Load %ecx with the return type code
+ mov ecx, [ebp + 20]
+
+// If the return value pointer is NULL, assume no return value.
+/*
+ Intel asm is weird. We have to explicitely specify 'DWORD PTR' in the nexr instruction,
+ otherwise only one BYTE will be compared (instead of a DWORD)!
+ */
+ cmp DWORD PTR [ebp + 24], 0
+ jne sc_retint
+
+// Even if there is no space for the return value, we are
+// obliged to handle floating-point values.
+ cmp ecx, FFI_TYPE_FLOAT
+ jne sc_noretval
+// fstp %st(0)
+ fstp st(0)
+
+ jmp sc_epilogue
+
+sc_retint:
+ cmp ecx, FFI_TYPE_INT
+ jne sc_retfloat
+// # Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp + 24]
+ mov [ecx + 0], eax
+ jmp sc_epilogue
+
+sc_retfloat:
+ cmp ecx, FFI_TYPE_FLOAT
+ jne sc_retdouble
+// Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp+24]
+// fstps (%ecx)
+ fstp DWORD PTR [ecx]
+ jmp sc_epilogue
+
+sc_retdouble:
+ cmp ecx, FFI_TYPE_DOUBLE
+ jne sc_retlongdouble
+// movl 24(%ebp),%ecx
+ mov ecx, [ebp+24]
+ fstp QWORD PTR [ecx]
+ jmp sc_epilogue
+
+ jmp sc_retlongdouble // avoid warning about unused label
+sc_retlongdouble:
+ cmp ecx, FFI_TYPE_LONGDOUBLE
+ jne sc_retint64
+// Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp+24]
+// fstpt (%ecx)
+ fstp QWORD PTR [ecx] /* XXX ??? */
+ jmp sc_epilogue
+
+sc_retint64:
+ cmp ecx, FFI_TYPE_SINT64
+ jne sc_retstruct
+// Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp+24]
+ mov [ecx+0], eax
+ mov [ecx+4], edx
+
+sc_retstruct:
+// Nothing to do!
+
+sc_noretval:
+sc_epilogue:
+ mov eax, esi
+ pop esi // NEW restore: must be preserved across function calls
+ mov esp, ebp
+ pop ebp
+ ret
+ }
+}
+
+__declspec(naked) int
+ffi_call_STDCALL(void (* prepfunc)(char *, extended_cif *), /* 8 */
+ extended_cif *ecif, /* 12 */
+ unsigned bytes, /* 16 */
+ unsigned flags, /* 20 */
+ unsigned *rvalue, /* 24 */
+ void (*fn)()) /* 28 */
+{
+ _asm {
+ push ebp
+ mov ebp, esp
+
+ push esi // NEW: this register must be preserved across function calls
+
+// XXX SAVE ESP NOW!
+ mov esi, esp
+
+// Make room for all of the new args.
+ mov ecx, [ebp+16]
+ sub esp, ecx
+
+ mov eax, esp
+
+// Place all of the ffi_prep_args in position
+ push [ebp + 12] // ecif
+ push eax
+ call [ebp + 8] // prepfunc
+
+// Return stack to previous state and call the function
+ add esp, 8
+// FIXME: Align the stack to a 128-bit boundary to avoid
+// potential performance hits.
+ call [ebp + 28]
+// stdcall functions pop arguments off the stack themselves
+
+// XXX IS ESP NOW THE SAME AS BEFORE?
+ sub esi, esp
+
+// Load %ecx with the return type code
+ mov ecx, [ebp + 20]
+
+// If the return value pointer is NULL, assume no return value.
+/*
+ Intel asm is weird. We have to explicitely specify 'DWORD PTR' in the nexr instruction,
+ otherwise only one BYTE will be compared (instead of a DWORD)!
+ */
+ cmp DWORD PTR [ebp + 24], 0
+ jne sc_retint
+
+// Even if there is no space for the return value, we are
+// obliged to handle floating-point values.
+ cmp ecx, FFI_TYPE_FLOAT
+ jne sc_noretval
+// fstp %st(0)
+ fstp st(0)
+
+ jmp sc_epilogue
+
+sc_retint:
+ cmp ecx, FFI_TYPE_INT
+ jne sc_retfloat
+// # Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp + 24]
+ mov [ecx + 0], eax
+ jmp sc_epilogue
+
+sc_retfloat:
+ cmp ecx, FFI_TYPE_FLOAT
+ jne sc_retdouble
+// Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp+24]
+// fstps (%ecx)
+ fstp DWORD PTR [ecx]
+ jmp sc_epilogue
+
+sc_retdouble:
+ cmp ecx, FFI_TYPE_DOUBLE
+ jne sc_retlongdouble
+// movl 24(%ebp),%ecx
+ mov ecx, [ebp+24]
+ fstp QWORD PTR [ecx]
+ jmp sc_epilogue
+
+ jmp sc_retlongdouble // avoid warning about unused label
+sc_retlongdouble:
+ cmp ecx, FFI_TYPE_LONGDOUBLE
+ jne sc_retint64
+// Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp+24]
+// fstpt (%ecx)
+ fstp QWORD PTR [ecx] /* XXX ??? */
+ jmp sc_epilogue
+
+sc_retint64:
+ cmp ecx, FFI_TYPE_SINT64
+ jne sc_retstruct
+// Load %ecx with the pointer to storage for the return value
+ mov ecx, [ebp+24]
+ mov [ecx+0], eax
+ mov [ecx+4], edx
+
+sc_retstruct:
+// Nothing to do!
+
+sc_noretval:
+sc_epilogue:
+ mov eax, esi
+ pop esi // NEW restore: must be preserved across function calls
+ mov esp, ebp
+ pop ebp
+ ret
+ }
+}
diff --git a/c/libffi_msvc/win64.asm b/c/libffi_msvc/win64.asm
new file mode 100644
--- /dev/null
+++ b/c/libffi_msvc/win64.asm
@@ -0,0 +1,156 @@
+PUBLIC ffi_call_AMD64
+
+EXTRN __chkstk:NEAR
+EXTRN ffi_closure_SYSV:NEAR
+
+_TEXT SEGMENT
+
+;;; ffi_closure_OUTER will be called with these registers set:
+;;; rax points to 'closure'
+;;; r11 contains a bit mask that specifies which of the
+;;; first four parameters are float or double
+;;;
+;;; It must move the parameters passed in registers to their stack location,
+;;; call ffi_closure_SYSV for the actual work, then return the result.
+;;;
+ffi_closure_OUTER PROC FRAME
+ ;; save actual arguments to their stack space.
+ test r11, 1
+ jne first_is_float
+ mov QWORD PTR [rsp+8], rcx
+ jmp second
+first_is_float:
+ movlpd QWORD PTR [rsp+8], xmm0
+
+second:
+ test r11, 2
+ jne second_is_float
+ mov QWORD PTR [rsp+16], rdx
+ jmp third
+second_is_float:
+ movlpd QWORD PTR [rsp+16], xmm1
+
+third:
+ test r11, 4
+ jne third_is_float
+ mov QWORD PTR [rsp+24], r8
+ jmp forth
+third_is_float:
+ movlpd QWORD PTR [rsp+24], xmm2
+
+forth:
+ test r11, 8
+ jne forth_is_float
+ mov QWORD PTR [rsp+32], r9
+ jmp done
+forth_is_float:
+ movlpd QWORD PTR [rsp+32], xmm3
+
+done:
+.ALLOCSTACK 40
+ sub rsp, 40
+.ENDPROLOG
+ mov rcx, rax ; context is first parameter
+ mov rdx, rsp ; stack is second parameter
+ add rdx, 40 ; correct our own area
+ mov rax, ffi_closure_SYSV
+ call rax ; call the real closure function
+ ;; Here, code is missing that handles float return values
+ add rsp, 40
+ movd xmm0, rax ; In case the closure returned a float.
+ ret 0
+ffi_closure_OUTER ENDP
+
+
+;;; ffi_call_AMD64
+
+stack$ = 0
+prepfunc$ = 32
+ecif$ = 40
+bytes$ = 48
+flags$ = 56
+rvalue$ = 64
+fn$ = 72
+
+ffi_call_AMD64 PROC FRAME
+
+ mov QWORD PTR [rsp+32], r9
+ mov QWORD PTR [rsp+24], r8
+ mov QWORD PTR [rsp+16], rdx
+ mov QWORD PTR [rsp+8], rcx
+.PUSHREG rbp
+ push rbp
+.ALLOCSTACK 48
+ sub rsp, 48 ; 00000030H
+.SETFRAME rbp, 32
+ lea rbp, QWORD PTR [rsp+32]
+.ENDPROLOG
+
+ mov eax, DWORD PTR bytes$[rbp]
+ add rax, 15
+ and rax, -16
+ call __chkstk
+ sub rsp, rax
+ lea rax, QWORD PTR [rsp+32]
+ mov QWORD PTR stack$[rbp], rax
+
+ mov rdx, QWORD PTR ecif$[rbp]
+ mov rcx, QWORD PTR stack$[rbp]
+ call QWORD PTR prepfunc$[rbp]
+
+ mov rsp, QWORD PTR stack$[rbp]
+
+ movlpd xmm3, QWORD PTR [rsp+24]
+ movd r9, xmm3
+
+ movlpd xmm2, QWORD PTR [rsp+16]
+ movd r8, xmm2
+
+ movlpd xmm1, QWORD PTR [rsp+8]
+ movd rdx, xmm1
+
+ movlpd xmm0, QWORD PTR [rsp]
+ movd rcx, xmm0
+
+ call QWORD PTR fn$[rbp]
+ret_int$:
+ cmp DWORD PTR flags$[rbp], 1 ; FFI_TYPE_INT
+ jne ret_float$
+
+ mov rcx, QWORD PTR rvalue$[rbp]
+ mov DWORD PTR [rcx], eax
+ jmp SHORT ret_nothing$
+
+ret_float$:
+ cmp DWORD PTR flags$[rbp], 2 ; FFI_TYPE_FLOAT
+ jne SHORT ret_double$
+
+ mov rax, QWORD PTR rvalue$[rbp]
+ movlpd QWORD PTR [rax], xmm0
+ jmp SHORT ret_nothing$
+
+ret_double$:
+ cmp DWORD PTR flags$[rbp], 3 ; FFI_TYPE_DOUBLE
+ jne SHORT ret_int64$
+
+ mov rax, QWORD PTR rvalue$[rbp]
+ movlpd QWORD PTR [rax], xmm0
+ jmp SHORT ret_nothing$
+
+ret_int64$:
+ cmp DWORD PTR flags$[rbp], 12 ; FFI_TYPE_SINT64
+ jne ret_nothing$
+
+ mov rcx, QWORD PTR rvalue$[rbp]
+ mov QWORD PTR [rcx], rax
+ jmp SHORT ret_nothing$
+
+ret_nothing$:
+ xor eax, eax
+
+ lea rsp, QWORD PTR [rbp+16]
+ pop rbp
+ ret 0
+ffi_call_AMD64 ENDP
+_TEXT ENDS
+END
diff --git a/setup_base.py b/setup_base.py
--- a/setup_base.py
+++ b/setup_base.py
@@ -7,7 +7,7 @@
if sys.platform == 'win32':
- COMPILE_LIBFFI = 'libffi_msvc' # from the CPython distribution
+ COMPILE_LIBFFI = 'c/libffi_msvc' # from the CPython distribution
else:
COMPILE_LIBFFI = None
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