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fadf1eb5
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2019-04-27T20:53:29
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hppa: avoid TEXTREL in .eh_frame section (#447)
Before the change hand-crafted .eh_frame section contained
ABS relocation and caused TEXTREL tag to be emitted:
```
$ ./configure --host=hppa2.0-unknown-linux-gnu LDFLAGS=-Wl,-z,text
$ make
...
/usr/libexec/gcc/hppa2.0-unknown-linux-gnu/ld:
read-only segment has dynamic relocations.
```
Link failure is caused by absolute address of FDEs
encoded into .eh_frame entries.
Fixed TEXTREL by using pcrel (instead of ABS) encoding
for absolute addresses (__PIC__ code) by adding augmentation
information ("zR" CIE type).
All tests still pass on hppa2.0. The specific tests that still pass
and exercise this code path:
testsuite/libffi.call/unwindtest.cc
testsuite/libffi.call/unwindtest_ffi_call.cc
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
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