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| author | Szabolcs Nagy <nsz@port70.net> | 2015-07-24 10:05:07 +0100 |
|---|---|---|
| committer | Szabolcs Nagy <nsz@port70.net> | 2015-07-24 10:05:07 +0100 |
| commit | 3bcea719ddd6ce399d7bccb492c40af77d216e42 (patch) | |
| tree | 11cb6c22b54b144e4b01e99c754ee0e7805c26c1 | |
| parent | 0910702c4d2cf9e8302b35c9519548726e1ac489 (diff) | |
| download | glibc-3bcea719ddd6ce399d7bccb492c40af77d216e42.zip glibc-3bcea719ddd6ce399d7bccb492c40af77d216e42.tar.gz glibc-3bcea719ddd6ce399d7bccb492c40af77d216e42.tar.bz2 | |
[ARM][BZ #17711] Fix extern protected data handling
Fixes elf/tst-protected1a and elf/tst-protected1b tests.
Depends on a gcc patch that makes protected visibility data non-local:
https://gcc.gnu.org/ml/gcc-patches/2015-07/msg01871.html
and on a binutils patch so R_*_GLOB_DAT relocs are used for it:
https://sourceware.org/ml/binutils/2015-07/msg00247.html
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | sysdeps/arm/dl-machine.h | 10 | ||||
| -rw-r--r-- | sysdeps/arm/dl-sysdep.h | 2 |
3 files changed, 12 insertions, 3 deletions
@@ -4,6 +4,9 @@ * sysdeps/aarch64/dl-sysdep.h (DL_EXTERN_PROTECTED_DATA): Define. * sysdeps/aarch64/dl-machine.h (elf_machine_type_class): Handle ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA. + * sysdeps/arm/dl-sysdep.h (DL_EXTERN_PROTECTED_DATA): Define. + * sysdeps/arm/dl-machine.h (elf_machine_type_class): Handle + ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA. 2015-07-24 Siddhesh Poyarekar <siddhesh@redhat.com> diff --git a/sysdeps/arm/dl-machine.h b/sysdeps/arm/dl-machine.h index f901538..6fb20bd 100644 --- a/sysdeps/arm/dl-machine.h +++ b/sysdeps/arm/dl-machine.h @@ -224,18 +224,22 @@ _dl_start_user:\n\ TLS variable, so undefined references should not be allowed to define the value. ELF_RTYPE_CLASS_COPY iff TYPE should not be allowed to resolve to one - of the main executable's symbols, as for a COPY reloc. */ + of the main executable's symbols, as for a COPY reloc. + ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA iff TYPE describes relocation against + protected data whose address may be external due to copy relocation. */ #ifndef RTLD_BOOTSTRAP # define elf_machine_type_class(type) \ ((((type) == R_ARM_JUMP_SLOT || (type) == R_ARM_TLS_DTPMOD32 \ || (type) == R_ARM_TLS_DTPOFF32 || (type) == R_ARM_TLS_TPOFF32 \ || (type) == R_ARM_TLS_DESC) \ * ELF_RTYPE_CLASS_PLT) \ - | (((type) == R_ARM_COPY) * ELF_RTYPE_CLASS_COPY)) + | (((type) == R_ARM_COPY) * ELF_RTYPE_CLASS_COPY) \ + | (((type) == R_ARM_GLOB_DAT) * ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA)) #else #define elf_machine_type_class(type) \ ((((type) == R_ARM_JUMP_SLOT) * ELF_RTYPE_CLASS_PLT) \ - | (((type) == R_ARM_COPY) * ELF_RTYPE_CLASS_COPY)) + | (((type) == R_ARM_COPY) * ELF_RTYPE_CLASS_COPY) \ + | (((type) == R_ARM_GLOB_DAT) * ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA)) #endif /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ diff --git a/sysdeps/arm/dl-sysdep.h b/sysdeps/arm/dl-sysdep.h index e5657dd..463ce59 100644 --- a/sysdeps/arm/dl-sysdep.h +++ b/sysdeps/arm/dl-sysdep.h @@ -21,3 +21,5 @@ /* _dl_argv cannot be attribute_relro, because _dl_start_user might write into it after _dl_start returns. */ #define DL_ARGV_NOT_RELRO 1 + +#define DL_EXTERN_PROTECTED_DATA |