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Finally, this adds _CALL_ELF == 2 support. ELFv1 objects can't be

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linked with ELFv2 objects, so this is one case where preprocessor
tests in ffi.c are fine.  Also, there is no need to define a new
FFI_ELFv2 or somesuch value in enum ffi_abi.  FFI_LINUX64 will happily
serve both ABIs.
This commit is contained in:
Alan Modra
2013-11-16 06:53:50 -05:00
committed by Anthony Green
parent 362851379a
commit 83f65b63d9
5 changed files with 506 additions and 60 deletions
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@@ -1,3 +1,32 @@
2013-11-16 Alan Modra <amodra@gmail.com>
* src/powerpc/ffi.c (ffi_prep_cif_machdep_core): Use #if _CALL_ELF
test to select parameter save sizing for ELFv2 vs. ELFv1.
* src/powerpc/ffitarget.h (FFI_V2_TYPE_FLOAT_HOMOG,
FFI_V2_TYPE_DOUBLE_HOMOG, FFI_V2_TYPE_SMALL_STRUCT): Define.
(FFI_TRAMPOLINE_SIZE): Define variant for ELFv2.
* src/powerpc/ffi.c (FLAG_ARG_NEEDS_PSAVE): Define.
(discover_homogeneous_aggregate): New function.
(ffi_prep_args64): Adjust start of param save area for ELFv2.
Handle homogenous floating point struct parms.
(ffi_prep_cif_machdep_core): Adjust space calculation for ELFv2.
Handle ELFv2 return values. Set FLAG_ARG_NEEDS_PSAVE. Handle
homogenous floating point structs.
(ffi_call): Increase size of smst_buffer for ELFv2. Handle ELFv2.
(flush_icache): Compile for ELFv2.
(ffi_prep_closure_loc): Set up ELFv2 trampoline.
(ffi_closure_helper_LINUX64): Don't return all structs directly
to caller. Handle homogenous floating point structs. Handle
ELFv2 struct return values.
* src/powerpc/linux64.S (ffi_call_LINUX64): Set up r2 for
ELFv2. Adjust toc save location. Call function pointer using
r12. Handle FLAG_RETURNS_SMST. Don't predict branches.
* src/powerpc/linux64_closure.S (ffi_closure_LINUX64): Set up r2
for ELFv2. Define ELFv2 versions of STACKFRAME, PARMSAVE, and
RETVAL. Handle possibly missing parameter save area. Handle
ELFv2 return values.
(.note.GNU-stack): Move inside outer #ifdef.
2013-11-16 Alan Modra <amodra@gmail.com>
* src/powerpc/ffi.c (ffi_prep_cif_machdep): Revert 2013-02-08