UPT_R10 61 arch/x86/um/asm/ptrace.h #define PT_REGS_R10(r) UPT_R10(&(r)->regs) UPT_R10 56 arch/x86/um/shared/sysdep/ptrace_64.h #define UPT_SYSCALL_ARG4(r) UPT_R10(r)