在 12/13/2018 2:15 PM, rander.wang 写道:
在 12/12/2018 8:00 AM, Pierre-Louis Bossart 写道:
On 12/11/18 5:08 PM, Andy Shevchenko wrote:
On Tue, Dec 11, 2018 at 03:23:17PM -0600, Pierre-Louis Bossart wrote:
Add common directory for xtensa architecture + for (i = 0; i <= stack_words - 4; i += 4) { + dev_err(sdev->dev, "0x%8.8x: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x\n", + stack_ptr + i, stack[i], stack[i + 1], stack[i + 2], + stack[i + 3]); + }
+ /* deal with any remaining words */ + switch (stack_words - i) { + case 0: + break; + case 1: + dev_err(sdev->dev, "0x%8.8x: 0x%8.8x\n", + stack_ptr + stack_words - 1, stack[stack_words - 1]); + break; + case 2: + dev_err(sdev->dev, "0x%8.8x: 0x%8.8x 0x%8.8x\n", + stack_ptr + stack_words - 2, stack[stack_words - 2], + stack[stack_words - 1]); + break; + case 3: + dev_err(sdev->dev, "0x%8.8x: 0x%8.8x 0x%8.8x 0x%8.8x\n", + stack_ptr + stack_words - 3, stack[stack_words - 3], + stack[stack_words - 2], stack[stack_words - 1]); + break; + default: + break; + }
hex_dump_to_buffer().
I vaguely recall there was a reason not to do it, we'll relook at this.
we don't want to convert a blob of data to "hex ASCII" in memory (hex_dump_to_buffer).
Here, we just want to dump the content of call stack, like:
[ 3.250628] sof-audio sof-audio: 0x0049fbb0: 0x8000f2d0 0x0049fc00 0x6f6c6c61 0x00632e63 [ 3.250670] sof-audio sof-audio: 0x0049fbb4: 0x00ffffff 0x0010b5d4 0x00000000 0x2000004c [ 3.250710] sof-audio sof-audio: 0x0049fbb8: 0x0040d000 0x00000000 0x0000024c 0x2000930c [ 3.250747] sof-audio sof-audio: 0x0049fbbc: 0x8000454c 0x0049fc30 0x00401e20 0x00000001 [ 3.250787] sof-audio sof-audio: 0x0049fbc0: 0x8000454c 0x0049fc30 0x00401e20 0x00000001 [ 3.250827] sof-audio sof-audio: 0x0049fbc4: 0x00000000 0x00000001 0x00000010 0x0049fcb8 [ 3.250865] sof-audio sof-audio: 0x0049fbc8: 0x0040a000 0x00401e98 0x00000001 0x00000002 [ 3.250889] sof-audio sof-audio: 0x0049fbcc: 0x80005ac5 0x0049fc60 0x00000000 0x00000000
Add more details: we use another tool to analysis the hex numbers with a ELF file to get the correct information, so we do it by ourself.
Thanks!
Rander
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