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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2020-03-31 17:32:14 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2020-07-08 15:02:37 +0100 |
| commit | 5f846c8b0dea05554a48ec5ad13874cc757a886f (patch) | |
| tree | 509d3c4ba1702ddaaab67da7a97f95643fa8d81a /dlfcn/modcxaatexit.c | |
| parent | fddbd7c0ef4960fc0a17712a95a146dd3f43de0a (diff) | |
| download | glibc-5f846c8b0dea05554a48ec5ad13874cc757a886f.tar.gz glibc-5f846c8b0dea05554a48ec5ad13874cc757a886f.tar.xz glibc-5f846c8b0dea05554a48ec5ad13874cc757a886f.zip | |
aarch64: fix RTLD_START for BTI
Tailcalls must use x16 or x17 for the indirect branch instruction to be compatible with code that uses BTI c at function entries. (Other forms of indirect branches can only land on BTI j.) Also added a BTI c at the ELF entry point of rtld, this is not strictly necessary since the kernel does not use indirect branch to get there, but it seems safest once building glibc itself with BTI is supported. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'dlfcn/modcxaatexit.c')
0 files changed, 0 insertions, 0 deletions