Defined in 4 files as a macro:
- libexec/rtld-elf/powerpc/rtld_machdep.h, line 70 (as a macro)
- libexec/rtld-elf/powerpc64/rtld_machdep.h, line 62 (as a macro)
- libexec/rtld-elf/riscv/rtld_machdep.h, line 85 (as a macro)
- sys/mips/include/tls.h, line 41 (as a macro)