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>

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