From: Rander Wang rander.wang@intel.com
On Xtensa platform ar0 is for caller address and ar1 is for stack address. The ar register dump can be used to rebuild call stack with FW elf file by debug tools.
Signed-off-by: Rander Wang rander.wang@intel.com Reviewed-by: Péter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Kai Vehmanen kai.vehmanen@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Guennadi Liakhovetski guennadi.liakhovetski@linux.intel.com Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com --- sound/soc/sof/xtensa/core.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/sound/soc/sof/xtensa/core.c b/sound/soc/sof/xtensa/core.c index bebbe3a2865c..7c91a919eadc 100644 --- a/sound/soc/sof/xtensa/core.c +++ b/sound/soc/sof/xtensa/core.c @@ -132,6 +132,17 @@ static void xtensa_stack(struct snd_sof_dev *sdev, const char *level, void *oops buf, sizeof(buf), false); dev_printk(level, sdev->dev, "0x%08x: %s\n", stack_ptr + i * 4, buf); } + + if (!xoops->plat_hdr.numaregs) + return; + + dev_printk(level, sdev->dev, "AR registers:\n"); + /* the number of ar registers is a multiple of 4 */ + for (i = 0; i < xoops->plat_hdr.numaregs; i += 4) { + hex_dump_to_buffer(xoops->ar + i, 16, 16, 4, + buf, sizeof(buf), false); + dev_printk(level, sdev->dev, "%#x: %s\n", i * 4, buf); + } }
const struct dsp_arch_ops sof_xtensa_arch_ops = {