r58 165 arch/arc/include/asm/entry-arcv2.h ST2 r58, r59, PT_sp + 12 r58 193 arch/arc/include/asm/entry-arcv2.h LD2 r58, r59, PT_sp + 12 r58 92 arch/arc/include/asm/ptrace.h unsigned long r58, r59; /* ACCL/ACCH used by FPU / DSP MPY */ r58 53 arch/arc/include/uapi/asm/ptrace.h unsigned long r30, r58, r59;