UPT_SYSCALL_ARG1   15 arch/x86/um/shared/sysdep/ptrace_32.h #define UPT_SYSCALL_ARG1(r) UPT_BX(r)
UPT_SYSCALL_ARG1   53 arch/x86/um/shared/sysdep/ptrace_64.h #define UPT_SYSCALL_ARG1(r) UPT_DI(r)