This was originally reported on the Python tracker:
httpa://bugs.python.org/issue23958
The original patch was written by Steve R. Hastings.
I've updated it to current master of libffi.
Add a new calling convention FFI_EFI64, alias FFI_WIN64, on all X86_64
platforms. This allows libffi compiled on a 64-bit x86 platform to call
EFI functions.
Compile in ffiw64.c and win64.S on all X86_64 platforms. When compiled
for a platform other than X86_WIN64, ffiw64.c suffixes its functions
with _efi64, to avoid conflict with the platform's actual
implementations of those functions.
Since libffi currently doesn't allow empty structures, libgo
currently maps them to ffi_type_void. Given that we'll abort
on this case, handle it gracefully.
Dumps all of the hand-coded unwind info for gas generated. Move jump
table data into .rodata. Adjust ffi_call_unix64 to load the static
chain. Split out sse portions of ffi_closure_unix64 to
ffi_closure_unix64_sse rather than test cif->flags at runtime.
src/x86/ffi64.c: In function 'classify_argument':
src/x86/ffi64.c:205:5: error: duplicate case value
case FFI_TYPE_LONGDOUBLE:
^
src/x86/ffi64.c:202:5: error: previously used here
case FFI_TYPE_DOUBLE:
^
Berker Peksag
Josh Triplett
Richard Henderson
Anthony Green
Zachary Waldowski
Zachary Waldowski
Jens Timmerman
Anthony Green