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| author | Alan Modra <amodra@gmail.com> | 2020-09-18 23:21:05 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-09-24 12:44:08 +0930 |
| commit | 08cd8d5929eac84b27788d8483fd75ab7ad13129 (patch) | |
| tree | d1f75adbe7f47d535916b92a0e7efa179ebae7e5 /libffi/src/m32r | |
| parent | 677b9150f54a0483d3de1182ac40717b7c4431a5 (diff) | |
| download | gcc-08cd8d5929eac84b27788d8483fd75ab7ad13129.zip gcc-08cd8d5929eac84b27788d8483fd75ab7ad13129.tar.gz gcc-08cd8d5929eac84b27788d8483fd75ab7ad13129.tar.bz2 | |
[RS6000] Power10 libffi fixes
Power10 pc-relative code doesn't use or preserve r2 as a TOC pointer.
That means calling between pc-relative and TOC using code can't be
done without intervening linker stubs, and a call from TOC code to
pc-relative code must have a nop after the bl in order to restore r2.
Now the PowerPC libffi assembly code doesn't use r2 except for the
implicit use when making calls back to C, ffi_closure_helper_LINUX64
and ffi_prep_args64. So changing the assembly to interoperate with
pc-relative code without stubs is easily done.
* src/powerpc/linux64.S (ffi_call_LINUX64): Don't emit global
entry when __PCREL__. Call using @notoc. Add nops.
* src/powerpc/linux64_closure.S (ffi_closure_LINUX64): Likewise.
(ffi_go_closure_linux64): Likewise.
Diffstat (limited to 'libffi/src/m32r')
0 files changed, 0 insertions, 0 deletions