a13 157 arch/c6x/include/uapi/asm/ptrace.h REG_PAIR(a13, a12); a13 63 arch/c6x/kernel/asm-offsets.c OFFSET(REGS_A13, pt_regs, a13); a13 47 arch/c6x/kernel/traps.c pr_err("A13: %08lx B13: %08lx\n", regs->a13, regs->b13); a13 59 tools/perf/arch/s390/include/dwarf-regs-table.h REG_DWARFNUM_NAME(a13, 61),