From patchwork Tue Oct 9 14:20:35 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [08/20] powerpc/xmon: Use STACK_FRAME_OVERHEAD in xmon_show_stack() Date: Tue, 09 Oct 2012 04:20:35 -0000 From: Michael Ellerman X-Patchwork-Id: 190320 Message-Id: <1349792447-15714-8-git-send-email-michael@ellerman.id.au> To: Cc: Paul Mackerras , Anton Blanchard We use STACK_FRAME_OVERHEAD in the exception vectors to establish the exception frame, so it should be good enough to use here. Signed-off-by: Michael Ellerman --- arch/powerpc/xmon/xmon.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index abf6be4..d940234 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -1286,12 +1286,6 @@ static int xmon_depth_to_print = 64; #define LRSAVE_OFFSET (STACK_FRAME_LR_SAVE * sizeof(unsigned long)) #define MARKER_OFFSET (STACK_FRAME_MARKER * sizeof(unsigned long)) -#ifdef __powerpc64__ -#define REGS_OFFSET 0x70 -#else -#define REGS_OFFSET 16 -#endif - static void xmon_show_stack(unsigned long sp, unsigned long lr, unsigned long pc) { @@ -1355,10 +1349,10 @@ static void xmon_show_stack(unsigned long sp, unsigned long lr, an exception frame. */ if (mread(sp + MARKER_OFFSET, &marker, sizeof(unsigned long)) && marker == STACK_FRAME_REGS_MARKER) { - if (mread(sp + REGS_OFFSET, ®s, sizeof(regs)) + if (mread(sp + STACK_FRAME_OVERHEAD, ®s, sizeof(regs)) != sizeof(regs)) { printf("Couldn't read registers at %lx\n", - sp + REGS_OFFSET); + sp + STACK_FRAME_OVERHEAD); break; } printf("--- Exception: %lx %s at ", regs.trap,