_BM
#define _BM(x) (~(Elf_Addr)0 >> ((8*sizeof(reloc_target_bitmask[0])) - (x)))
#undef _BM
#define _BM(x) (~(Elf_Addr)0 >> ((8*sizeof(reloc_target_bitmask[0])) - (x)))
#undef _BM
#define _BM(x) (~(-(1ULL << (x))))
#undef _BM
#define _BM(x) (~(-(1ULL << (x))))
#undef _BM
#define _BM(x) (~(Elf_Addr)0 >> ((8*sizeof(reloc_target_bitmask[0])) - (x)))
#undef _BM
#define _BM(x) (x == 32? ~0 : ~(-(1UL << (x))))
#undef _BM
#define _BM(x) (~(-(1ULL << (x))))
#undef _BM