mcontext32 57 arch/powerpc/kernel/ppc32.h struct mcontext32 uc_mcontext; mcontext32 59 arch/powerpc/kernel/signal_32.c #define mcontext mcontext32 mcontext32 350 arch/powerpc/perf/callchain.c struct mcontext32 mctx; mcontext32 410 arch/powerpc/perf/callchain.c struct mcontext32 __user *mctx = NULL;