diff options
Diffstat (limited to 'sysdeps/mips/dl-machine.h')
| -rw-r--r-- | sysdeps/mips/dl-machine.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/mips/dl-machine.h b/sysdeps/mips/dl-machine.h index c2dd915e8b..b5bf4ad6d3 100644 --- a/sysdeps/mips/dl-machine.h +++ b/sysdeps/mips/dl-machine.h @@ -439,6 +439,21 @@ 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 |