re PR libffi/31937 (libffi doesn't support ppc without FPU)

re PR libffi/31937 (libffi doesn't support ppc without FPU)

2007-12-01  Andreas Tobler  <a.tobler@schweiz.org>

	PR libffi/31937
	* src/powerpc/ffitarget.h: Introduce new ABI FFI_LINUX_SOFT_FLOAT.
	Add local FFI_TYPE_UINT128 to handle soft-float long-double-128.
	* src/powerpc/ffi.c: Distinguish between __NO_FPRS__ and not and
	set the NUM_FPR_ARG_REGISTERS according to.
	Add support for potential soft-float support under hard-float
	architecture.
	(ffi_prep_args_SYSV): Set NUM_FPR_ARG_REGISTERS to 0 in case of
	FFI_LINUX_SOFT_FLOAT, handle float, doubles and long-doubles according
	to the FFI_LINUX_SOFT_FLOAT ABI.
	(ffi_prep_cif_machdep): Likewise.
	(ffi_closure_helper_SYSV): Likewise.
	* src/powerpc/ppc_closure.S: Make sure not to store float/double
	on archs where __NO_FPRS__ is true.
	Add FFI_TYPE_UINT128 support.
	* src/powerpc/sysv.S: Add support for soft-float long-double-128.
	Adjust copyright notice.

From-SVN: r130559