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This separates the 32-bit sysv/linux/bsd code from the 64-bit linux

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code, and makes it possible to link code compiled with different
options to those used to compile libffi.  For example, a
-mlong-double-128 libffi can be used with -mlong-double-64 code.

Using the return value area as a place to pass parameters wasn't such
a good idea, causing a failure of cls_ulonglong.c.  I didn't see this
when running the mainline gcc libffi testsuite because that version of
the test is inferior to the upstreamm libffi test.

Using NUM_FPR_ARG_REGISTERS rather than NUM_FPR_ARG_REGISTERS64 meant
that a parameter save area could be allocated before it was strictly
necessary.  Wrong but harmless.  Found when splitting apart ffi.c
into 32-bit and 64-bit support.
This commit is contained in:
Alan Modra
2013-11-21 06:12:35 -05:00
committed by Anthony Green
parent 69df91cfb4
commit ac75368893
20 changed files with 2187 additions and 1777 deletions
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ChangeLog
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@@ -1,3 +1,41 @@
2013-11-21 Anthony Green <green@moxielogic.com>
* configure, Makefile.in, include/Makefile.in, include/ffi.h.in,
man/Makefile.in, testsuite/Makefile.in: Rebuilt.
2013-11-21 Alan Modra <amodra@gmail.com>
* Makefile.am (EXTRA_DIST): Add new src/powerpc files.
(nodist_libffi_la_SOURCES <POWERPC, POWERPC_FREEBSD>): Likewise.
* configure.ac (HAVE_LONG_DOUBLE_VARIANT): Define for powerpc.
* include/ffi.h.in (ffi_prep_types): Declare.
* src/prep_cif.c (ffi_prep_cif_core): Call ffi_prep_types.
* src/types.c (FFI_NONCONST_TYPEDEF): Define and use for
HAVE_LONG_DOUBLE_VARIANT.
* src/powerpc/ffi_powerpc.h: New file.
* src/powerpc/ffi.c: Split into..
* src/powerpc/ffi_sysv.c: ..new file, and..
* src/powerpc/ffi_linux64.c: ..new file, rewriting parts.
* src/powerpc/ffitarget.h (enum ffi_abi): Rewrite powerpc ABI
selection as bits controlling features.
* src/powerpc/linux64.S: For consistency, use POWERPC64 rather
than __powerpc64__.
* src/powerpc/linux64_closure.S: Likewise.
* src/powerpc/ppc_closure.S: Likewise. Move .note.FNU-stack
inside guard.
* src/powerpc/sysv.S: Likewise.
* configure: Regenerate.
* fficonfig.h.in: Regenerate.
* Makefile.in: Regenerate.
2013-11-20 Alan Modra <amodra@gmail.com>
* src/powerpc/ffi.c (ffi_prep_cif_machdep_core): Use
NUM_FPR_ARG_REGISTERS64 and NUM_GPR_ARG_REGISTERS64 not their
32-bit versions for 64-bit code.
* src/powerpc/linux64_closure.S: Don't use the return value area
as a parameter save area on ELFv2.
2013-11-18 Iain Sandoe <iain@codesourcery.com>
* src/powerpc/darwin.S (EH): Correct use of pcrel FDE encoding.