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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-01-24 10:46:17 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-02-01 14:49:46 -0300 |
| commit | 32612615c58b394c3eb09f020f31310797ad3854 (patch) | |
| tree | 3e6b65aaabd471f79a2179e75bbf64ccd1a6fa04 /sysdeps/hppa | |
| parent | 254d3d5aef2fd8430c469e1938209ac100ebf132 (diff) | |
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elf: Issue la_symbind for bind-now (BZ #23734)
The audit symbind callback is not called for binaries built with
-Wl,-z,now or when LD_BIND_NOW=1 is used, nor the PLT tracking callbacks
(plt_enter and plt_exit) since this would change the expected
program semantics (where no PLT is expected) and would have performance
implications (such as for BZ#15533).
LAV_CURRENT is also bumped to indicate the audit ABI change (where
la_symbind flags are set by the loader to indicate no possible PLT
trace).
To handle powerpc64 ELFv1 function descriptor, _dl_audit_symbind
requires to know whether bind-now is used so the symbol value is
updated to function text segment instead of the OPD (for lazy binding
this is done by PPC64_LOAD_FUNCPTR on _dl_runtime_resolve).
Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
powerpc64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'sysdeps/hppa')
| -rw-r--r-- | sysdeps/hppa/dl-lookupcfg.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/hppa/dl-lookupcfg.h b/sysdeps/hppa/dl-lookupcfg.h index 5d381147c0..8da2412fea 100644 --- a/sysdeps/hppa/dl-lookupcfg.h +++ b/sysdeps/hppa/dl-lookupcfg.h @@ -80,3 +80,6 @@ void attribute_hidden _dl_unmap (struct link_map *map); #define DL_FIXUP_VALUE_CODE_ADDR(value) ((value).ip) #define DL_FIXUP_VALUE_ADDR(value) ((uintptr_t) &(value)) #define DL_FIXUP_ADDR_VALUE(addr) (*(struct fdesc *) (addr)) +#define DL_FIXUP_BINDNOW_ADDR_VALUE(addr) (addr) +#define DL_FIXUP_BINDNOW_RELOC(value, new_value, st_value) \ + (*value) = *(struct fdesc *) (st_value) |