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ASoC: SOF: Xtensa: dump ar registers to restore call stack

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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>
Link: https://lore.kernel.org/r/20230919092416.4137-2-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Rander Wang 2023-09-19 12:24:08 +03:00 committed by Mark Brown
parent 88e20c1f8c
commit 58bb5081cb
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GPG Key ID: 24D68B725D5487D0
1 changed files with 11 additions and 0 deletions
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11
sound/soc/sof/xtensa/core.c
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@ -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 = {