c3-lang/libffi/src/x86/ffitarget.h

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• Hash : b5fed601
  Author :
  Date : 2014-04-05T17:33:42
  

  Fix ABI on 32-bit non-Windows x86: go back to trampoline size 10 The trampoline size is part of the ABI, so it cannot change. Move the logic from the stdcall and thiscall trampolines to the functions they call, to reduce them both to 10 bytes. This drops the previously added support for raw THISCALL closures on non-Windows. (Non-raw THISCALL closures still work.)

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• src/x86/ffitarget.h

• /* -----------------------------------------------------------------*-C-*-
     ffitarget.h - Copyright (c) 2012  Anthony Green
                   Copyright (c) 1996-2003, 2010  Red Hat, Inc.
                   Copyright (C) 2008  Free Software Foundation, 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 THE AUTHORS OR COPYRIGHT
     HOLDERS 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
  
  #ifndef LIBFFI_H
  #error "Please do not include ffitarget.h directly into your source.  Use ffi.h instead."
  #endif
  
  /* ---- System specific configurations ----------------------------------- */
  
  /* For code common to all platforms on x86 and x86_64. */
  #define X86_ANY
  
  #if defined (X86_64) && defined (__i386__)
  #undef X86_64
  #define X86
  #endif
  
  #ifdef X86_WIN64
  #define FFI_SIZEOF_ARG 8
  #define USE_BUILTIN_FFS 0 /* not yet implemented in mingw-64 */
  #endif
  
  /* ---- Generic type definitions ----------------------------------------- */
  
  #ifndef LIBFFI_ASM
  #ifdef X86_WIN64
  #ifdef _MSC_VER
  typedef unsigned __int64       ffi_arg;
  typedef __int64                ffi_sarg;
  #else
  typedef unsigned long long     ffi_arg;
  typedef long long              ffi_sarg;
  #endif
  #else
  #if defined __x86_64__ && defined __ILP32__
  #define FFI_SIZEOF_ARG 8
  #define FFI_SIZEOF_JAVA_RAW  4
  typedef unsigned long long     ffi_arg;
  typedef long long              ffi_sarg;
  #else
  typedef unsigned long          ffi_arg;
  typedef signed long            ffi_sarg;
  #endif
  #endif
  
  typedef enum ffi_abi {
    FFI_FIRST_ABI = 0,
  
    /* ---- Intel x86 Win32 ---------- */
  #ifdef X86_WIN32
    FFI_SYSV,
    FFI_STDCALL,
    FFI_THISCALL,
    FFI_FASTCALL,
    FFI_MS_CDECL,
    FFI_LAST_ABI,
  #ifdef _MSC_VER
    FFI_DEFAULT_ABI = FFI_MS_CDECL
  #else
    FFI_DEFAULT_ABI = FFI_SYSV
  #endif
  
  #elif defined(X86_WIN64)
    FFI_WIN64,
    FFI_LAST_ABI,
    FFI_DEFAULT_ABI = FFI_WIN64
  
  #else
    /* ---- Intel x86 and AMD x86-64 - */
    FFI_SYSV,
    FFI_UNIX64,   /* Unix variants all use the same ABI for x86-64  */
    FFI_THISCALL,
    FFI_FASTCALL,
    FFI_STDCALL,
    FFI_LAST_ABI,
  #if defined(__i386__) || defined(__i386)
    FFI_DEFAULT_ABI = FFI_SYSV
  #else
    FFI_DEFAULT_ABI = FFI_UNIX64
  #endif
  #endif
  } ffi_abi;
  #endif
  
  /* ---- Definitions for closures ----------------------------------------- */
  
  #define FFI_CLOSURES 1
  #define FFI_TYPE_SMALL_STRUCT_1B (FFI_TYPE_LAST + 1)
  #define FFI_TYPE_SMALL_STRUCT_2B (FFI_TYPE_LAST + 2)
  #define FFI_TYPE_SMALL_STRUCT_4B (FFI_TYPE_LAST + 3)
  #define FFI_TYPE_MS_STRUCT       (FFI_TYPE_LAST + 4)
  
  #if defined (X86_64) || (defined (__x86_64__) && defined (X86_DARWIN))
  #define FFI_TRAMPOLINE_SIZE 24
  #define FFI_NATIVE_RAW_API 0
  #else
  #ifdef X86_WIN32
  #define FFI_TRAMPOLINE_SIZE 52
  #else
  #ifdef X86_WIN64
  #define FFI_TRAMPOLINE_SIZE 29
  #define FFI_NATIVE_RAW_API 0
  #define FFI_NO_RAW_API 1
  #else
  #define FFI_TRAMPOLINE_SIZE 10
  #endif
  #endif
  #ifndef X86_WIN64
  #define FFI_NATIVE_RAW_API 1	/* x86 has native raw api support */
  #endif
  #endif
  
  #endif
  
  

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