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| author | Fangrui Song <maskray@google.com> | 2019-06-12 07:53:06 +0000 |
|---|---|---|
| committer | Fangrui Song <maskray@google.com> | 2019-06-12 07:53:06 +0000 |
| commit | 4ce0a519c19cb4e8629213db8baeab5f16df68cf (patch) | |
| tree | 00bd6f91fd5d41930e378da54efaecd9e2c466da /llvm/lib/LineEditor/LineEditor.cpp | |
| parent | 6fab7d0ef2391642c4f78c01b9901fad6c8f09b6 (diff) | |
| download | bcm5719-llvm-4ce0a519c19cb4e8629213db8baeab5f16df68cf.tar.gz bcm5719-llvm-4ce0a519c19cb4e8629213db8baeab5f16df68cf.zip | |
[ELF][RISCV] Treat R_RISCV_{ADD,SET,SUB}* as link-time constants
R_RISCV_{ADD,SET,SUB}* are used for local label computation.
Add a new RelExpr member R_RISCV_ADD to represent them.
R_RISCV_ADD is treated as a link-time constant because otherwise
R_RISCV_{ADD,SET,SUB}* are not allowed in -pie/-shared mode.
In glibc Scrt1.o, .rela.eh_frame contains such relocations.
Because .eh_frame is not writable, we get this error:
ld.lld: error: can't create dynamic relocation R_RISCV_ADD32 against symbol: .L0 in readonly segment; recompil object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output
>>> defined in ..../riscv64-linux-gnu/lib/Scrt1.o
With D63076 and this patch, I can run -pie/-shared programs linked against glibc.
Note llvm-mc cannot currently produce R_RISCV_SET* so they are not tested.
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D63183
llvm-svn: 363128
Diffstat (limited to 'llvm/lib/LineEditor/LineEditor.cpp')
0 files changed, 0 insertions, 0 deletions
