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| author | Andreas Schwab <schwab@suse.de> | 2023-09-21 16:49:41 +0200 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2023-09-25 12:36:58 +0200 |
| commit | 7345d05aafde53a48d5a587a6d9c1778db78e0f3 (patch) | |
| tree | 2402f4d9ecda856d80e8fc4f1ce1c54b8609baab /ld/emulparams | |
| parent | a47d304b1229ecf8912fac17ee9c48d1bf3c729a (diff) | |
| download | gdb-7345d05aafde53a48d5a587a6d9c1778db78e0f3.zip gdb-7345d05aafde53a48d5a587a6d9c1778db78e0f3.tar.gz gdb-7345d05aafde53a48d5a587a6d9c1778db78e0f3.tar.bz2 | |
RISC-V: Protect .got with relro
Move .got before .data so that it can be protected with -zrelro. Also
separate .got.plt from .got if -znow is not in effect; the first two words
of .got.plt are placed within the relro region.
ld:
PR ld/30877
* emulparams/elf32lriscv-defs.sh (DATA_GOT, SEPARATE_GOTPLT):
Define.
* emulparams/elf64lriscv-defs.sh (SEPARATE_GOTPLT): Define.
* testsuite/ld-elf/binutils.exp (binutils_test): Remove riscv*-*-*
from relro_got expression.
Diffstat (limited to 'ld/emulparams')
| -rw-r--r-- | ld/emulparams/elf32lriscv-defs.sh | 4 | ||||
| -rw-r--r-- | ld/emulparams/elf64lriscv-defs.sh | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/ld/emulparams/elf32lriscv-defs.sh b/ld/emulparams/elf32lriscv-defs.sh index b823ced..0165561 100644 --- a/ld/emulparams/elf32lriscv-defs.sh +++ b/ld/emulparams/elf32lriscv-defs.sh @@ -47,3 +47,7 @@ INITIAL_READONLY_SECTIONS="${RELOCATING+${CREATE_SHLIB-${INITIAL_READONLY_SECTIO OTHER_END_SYMBOLS="${CREATE_SHLIB-__BSS_END__ = .; __global_pointer$ = MIN(__SDATA_BEGIN__ + 0x800, MAX(__DATA_BEGIN__ + 0x800, __BSS_END__ - 0x800));}" + +# Put .got before .data +DATA_GOT=" " +SEPARATE_GOTPLT="SIZEOF (.got.plt) >= 8 ? 8 : 0" diff --git a/ld/emulparams/elf64lriscv-defs.sh b/ld/emulparams/elf64lriscv-defs.sh index 84a700a..ca15338 100644 --- a/ld/emulparams/elf64lriscv-defs.sh +++ b/ld/emulparams/elf64lriscv-defs.sh @@ -1,2 +1,3 @@ source_sh ${srcdir}/emulparams/elf32lriscv-defs.sh ELFSIZE=64 +SEPARATE_GOTPLT="SIZEOF (.got.plt) >= 16 ? 16 : 0" |