Fwd: [patch libffi]: Add support for fastcall/thiscall to x86 variant of libffi for PR 51500

[Andrew Haley <aph at redhat dot com>]

This one really needs to be discussed here.

Andrew.

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• From: Kai Tietz <ktietz70 at googlemail dot com>
• To: GCC Patches <gcc-patches at gcc dot gnu dot org>
• Cc: Andrew Haley <aph at redhat dot com>
• Date: Wed, 25 Jan 2012 11:40:41 +0100
• Subject: [patch libffi]: Add support for fastcall/thiscall to x86 variant oflibffi for PR 51500
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Hello,

this patch adds required support for thiscall/fastcall
calling-convention of x86 Windows.  It is a prerequisit for fixing PR
libgcj/51500 for 32-bit Windows.  The default-calling-convention for
C++ none-static and none-variadic class-members is changed by 4.7 to
thiscall as described by vendors ABI defintion.

2012-01-25  Kai Tietz  <ktietz@redhat.com>

        * src/libffi/src/x86/ffi.c (ffi_call_win32): Add new
        argument to prototype for specify calling-convention.
        (ffi_call): Add support for stdcall/thiscall convention.
        (ffi_raw_call): Likewise.
        * src/x86/ffitarget.h (ffi_abi): Add FFI_THISCALL and
        FFI_FASTCALL.
        * src/x86/win32.S (_ffi_call_win32): Add support for
        fastcall/thiscall calling-convention calls.

Tested for i686-w64-mingw32 and i686-pc-cygwin.  Ok for apply?

Regards,
Kai

Attachment: pr51500_libffi.txt
Description: Text document

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