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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2021-10-13 09:49:34 -0300 |
|---|---|---|
| committer | Carlos O'Donell <carlos@redhat.com> | 2022-03-29 17:01:07 -0400 |
| commit | 41348211d4b9a1fa0183fb6358efb1e345b09a26 (patch) | |
| tree | bbcdd50b7077969453f74d5b3e0d6dca0e72a448 /sysdeps/sparc/sparc64 | |
| parent | ef2c249cbd8ca939b031bca89145e00d6cd47c91 (diff) | |
| download | glibc-41348211d4b9a1fa0183fb6358efb1e345b09a26.tar.gz | |
elf: Fix dynamic-link.h usage on rtld.c
The 4af6982e4c fix does not fully handle RTLD_BOOTSTRAP usage on
rtld.c due two issues:
1. RTLD_BOOTSTRAP is also used on dl-machine.h on various
architectures and it changes the semantics of various machine
relocation functions.
2. The elf_get_dynamic_info() change was done sideways, previously
to 490e6c62aa get-dynamic-info.h was included by the first
dynamic-link.h include *without* RTLD_BOOTSTRAP being defined.
It means that the code within elf_get_dynamic_info() that uses
RTLD_BOOTSTRAP is in fact unused.
To fix 1. this patch now includes dynamic-link.h only once with
RTLD_BOOTSTRAP defined. The ELF_DYNAMIC_RELOCATE call will now have
the relocation fnctions with the expected semantics for the loader.
And to fix 2. part of 4af6982e4c is reverted (the check argument
elf_get_dynamic_info() is not required) and the RTLD_BOOTSTRAP
pieces are removed.
To reorganize the includes the static TLS definition is moved to
its own header to avoid a circular dependency (it is defined on
dynamic-link.h and dl-machine.h requires it at same time other
dynamic-link.h definition requires dl-machine.h defitions).
Also ELF_MACHINE_NO_REL, ELF_MACHINE_NO_RELA, and ELF_MACHINE_PLT_REL
are moved to its own header. Only ancient ABIs need special values
(arm, i386, and mips), so a generic one is used as default.
The powerpc Elf64_FuncDesc is also moved to its own header, since
csu code required its definition (which would require either include
elf/ folder or add a full path with elf/).
Checked on x86_64, i686, aarch64, armhf, powerpc64, powerpc32,
and powerpc64le.
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
(cherry picked from commit d6d89608ac8cf2b37c75debad1fff653f6939f90)
Resolved conflicts:
elf/rtld.c
Diffstat (limited to 'sysdeps/sparc/sparc64')
| -rw-r--r-- | sysdeps/sparc/sparc64/dl-machine.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/sysdeps/sparc/sparc64/dl-machine.h b/sysdeps/sparc/sparc64/dl-machine.h index 3fd18c6e5e..3fa79d038f 100644 --- a/sysdeps/sparc/sparc64/dl-machine.h +++ b/sysdeps/sparc/sparc64/dl-machine.h @@ -26,6 +26,8 @@ #include <ldsodefs.h> #include <sysdep.h> #include <dl-plt.h> +#include <dl-static-tls.h> +#include <dl-machine-rel.h> #define ELF64_R_TYPE_ID(info) ((info) & 0xff) #define ELF64_R_TYPE_DATA(info) ((info) >> 8) @@ -118,10 +120,6 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc, /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */ #define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT -/* The SPARC never uses Elf64_Rel relocations. */ -#define ELF_MACHINE_NO_REL 1 -#define ELF_MACHINE_NO_RELA 0 - /* Set up the loaded object described by L so its unrelocated PLT entries will jump to the on-demand fixup code in dl-runtime.c. */ |