forked from OSchip/llvm-project
4ce0a519c1
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
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| .. | ||
| AArch64.cpp | ||
| AMDGPU.cpp | ||
| ARM.cpp | ||
| AVR.cpp | ||
| Hexagon.cpp | ||
| MSP430.cpp | ||
| Mips.cpp | ||
| MipsArchTree.cpp | ||
| PPC.cpp | ||
| PPC64.cpp | ||
| RISCV.cpp | ||
| SPARCV9.cpp | ||
| X86.cpp | ||
| X86_64.cpp | ||