GDB_R15 32 arch/nios2/include/asm/kgdb.h GDB_R15, GDB_R15 10 arch/sh/include/asm/kgdb.h GDB_R8, GDB_R9, GDB_R10, GDB_R11, GDB_R12, GDB_R13, GDB_R14, GDB_R15, GDB_R15 65 arch/x86/include/asm/kgdb.h GDB_R15, /* 15 */