Defined in 4 files as a macro:
- arch/x86/include/uapi/asm/ptrace-abi.h, line 15 (as a macro)
- arch/x86/um/shared/sysdep/ptrace_64.h, line 39 (as a macro)
- drivers/dma/pl330.c, line 74 (as a macro)
- tools/perf/arch/x86/tests/regs_load.S, line 17 (as a macro)