Commit Graph

4 Commits

Author SHA1 Message Date
Petar Jovanovic 3cfcd75453 [mips][micromips] Fix how values in .gcc_except_table are calculated
When a landing pad is calculated in a program that is compiled for micromips
with -fPIC flag, it will point to an even address.
Such an error will cause a segmentation fault, as the instructions in
micromips are aligned on odd addresses. This patch sets the last bit of the
offset where a landing pad is, to 1, which will effectively be an odd
address and point to the instruction exactly.

r344591 fixed this issue for -static compilation.

Patch by Aleksandar Beserminji.

Differential Revision: https://reviews.llvm.org/D57677

llvm-svn: 353480
2019-02-07 22:57:33 +00:00
Aleksandar Beserminji 81eb440772 [mips][micromips] Fix overlaping FDEs error
When compiling static executable for micromips, CFI symbols
are incorrectly labeled as MICROMIPS, which cause
".eh_frame_hdr refers to overlapping FDEs." error.

This patch does not label CFI symbols as MICROMIPS, and FDEs do not
overlap anymore. This patch also exposes another bug, which is fixed
here: https://reviews.llvm.org/D52985

Differential Revision: https://reviews.llvm.org/D52987

llvm-svn: 344516
2018-10-15 14:39:12 +00:00
Aleksandar Beserminji 585f55bb8b [mips][micromips] Revert "Fix overlaping FDEs error"
This reverts r344511.

llvm-svn: 344515
2018-10-15 14:36:48 +00:00
Aleksandar Beserminji 10ec5c8c28 [mips][micromips] Fix overlaping FDEs error
When compiling static executable for micromips, CFI symbols
are incorrectly labeled as MICROMIPS, which cause
".eh_frame_hdr refers to overlapping FDEs." error.

This patch does not label CFI symbols as MICROMIPS, and FDEs do not
overlap anymore. This patch also exposes another bug, which is fixed
here: https://reviews.llvm.org/D52985

Differential Revision: https://reviews.llvm.org/D52987

llvm-svn: 344511
2018-10-15 12:59:17 +00:00