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author | Florian Weimer <fweimer@redhat.com> | 2020-04-24 22:13:03 +0200 |
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committer | Florian Weimer <fweimer@redhat.com> | 2020-04-24 22:13:03 +0200 |
commit | 50a2d83c08a94a10f88a1fedeb7a6e3667a6b732 (patch) | |
tree | 4fdc0dd13db811d4b08db15aee6ad8381fc16d67 /sysdeps/mips/dl-machine.h | |
parent | 781dacc4f41332098e3a272514b20a490a7ebc8c (diff) | |
download | glibc-50a2d83c08a94a10f88a1fedeb7a6e3667a6b732.tar.gz glibc-50a2d83c08a94a10f88a1fedeb7a6e3667a6b732.tar.xz glibc-50a2d83c08a94a10f88a1fedeb7a6e3667a6b732.zip |
elf: Introduce <elf_machine_sym_no_match.h>
MIPS needs to ignore certain existing symbols during symbol lookup. The old scheme uses the ELF_MACHINE_SYM_NO_MATCH macro, with an inline function, within its own header, with a sysdeps override for MIPS. This allows re-use of the function from another file (without having to include <dl-machine.h> or providing the default definition for ELF_MACHINE_SYM_NO_MATCH). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'sysdeps/mips/dl-machine.h')
-rw-r--r-- | sysdeps/mips/dl-machine.h | 15 |
1 files changed, 0 insertions, 15 deletions
diff --git a/sysdeps/mips/dl-machine.h b/sysdeps/mips/dl-machine.h index 06021ea9ab..e3b11a4f21 100644 --- a/sysdeps/mips/dl-machine.h +++ b/sysdeps/mips/dl-machine.h @@ -467,21 +467,6 @@ elf_machine_plt_value (struct link_map *map, const ElfW(Rel) *reloc, return value; } -/* The semantics of zero/non-zero values of undefined symbols differs - depending on whether the non-PIC ABI is in use. Under the non-PIC - ABI, a non-zero value indicates that there is an address reference - to the symbol and thus it must always be resolved (except when - resolving a jump slot relocation) to the PLT entry whose address is - provided as the symbol's value; a zero value indicates that this - canonical-address behaviour is not required. Yet under the classic - MIPS psABI, a zero value indicates that there is an address - reference to the function and the dynamic linker must resolve the - symbol immediately upon loading. To avoid conflict, symbols for - which the dynamic linker must assume the non-PIC ABI semantics are - marked with the STO_MIPS_PLT flag. */ -#define ELF_MACHINE_SYM_NO_MATCH(sym) \ - ((sym)->st_shndx == SHN_UNDEF && !((sym)->st_other & STO_MIPS_PLT)) - #endif /* !dl_machine_h */ #ifdef RESOLVE_MAP |