Date: Sun, 22 Dec 2013 17:50:31 +0800 From: Howard Su <howard0su@gmail.com> To: Warner Losh <imp@bsdimp.com> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: [PATCH] Add stack unwind support for the functions in .ko Message-ID: <CAAvnz_r1WsxC0Q%2BNOWhSs0Wp_Vs9mjpusZVrixsW1v%2BfwiXDpA@mail.gmail.com> In-Reply-To: <C6E93F79-BA1C-48E9-8689-775D88462921@bsdimp.com> References: <CAAvnz_pWZqw-HEB-GTJ_CkErjXrz3v7ozabMXE__vr=SfkBVSg@mail.gmail.com> <CAAvnz_p2vw9=HWbGPePKm_yDxM-bM1h6VaQBeJq9sYXPRb2-Lg@mail.gmail.com> <20131215173042.0dead636@bender.Home> <CAAvnz_qmn%2Ba%2B-aE4GkYw6TDOPzfST2j5WGvHqKX4WWVsVACSzQ@mail.gmail.com> <C6E93F79-BA1C-48E9-8689-775D88462921@bsdimp.com>
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--001a11c2bd3826572304ee1c7138 Content-Type: text/plain; charset=ISO-8859-1 here is the new version which address the print registers out problem. On Monday, December 16, 2013, Warner Losh wrote: > > On Dec 15, 2013, at 4:56 PM, Howard Su wrote: > > > On Monday, December 16, 2013, Andrew Turner wrote: > > > >> On Mon, 9 Dec 2013 22:44:14 +0800 > >> Howard Su <howard0su@gmail.com <javascript:;> <javascript:;>> wrote: > >> > >>> Here is a new version which solve the unreadable $a problem. (the fix > >>> is in ddb/db_main.c in the end of the patch.) > >>> > >>> I attached the diff for review. > >> > >> I can't comment on the MD parts of the code, but the ARM change looks > >> good. My only request is to add a kernel option to turn on printing the > >> registers in the stack trace as it has been useful for tracking down > >> bugs. > >> > > I read the MD code of MIPS. seems it faces the same situation like arm > > (register pass parameter). I will follow its pattern to print out > register. > > better than an option? > > I thought MIPS printed the args from those registers as args and ARM was > the odd man out... > > Warner > > -- -Howard --001a11c2bd3826572304ee1c7138 Content-Type: text/x-patch; charset=US-ASCII; name="unwind.patch" Content-Disposition: attachment; filename="unwind.patch" Content-Transfer-Encoding: base64 X-Attachment-Id: 9079f629886fc7c4_0.1 ZGlmZiAtLWdpdCBhL3N5cy9hcm0vYXJtL2RiX2ludGVyZmFjZS5jIGIvc3lzL2FybS9hcm0vZGJf aW50ZXJmYWNlLmMKaW5kZXggNjkwNjY1MC4uNzdkOWU1MCAxMDA2NDQKLS0tIGEvc3lzL2FybS9h cm0vZGJfaW50ZXJmYWNlLmMKKysrIGIvc3lzL2FybS9hcm0vZGJfaW50ZXJmYWNlLmMKQEAgLTE4 MiwzMCArMTgyLDM5IEBAIGRiX3JlYWRfYnl0ZXMoYWRkciwgc2l6ZSwgZGF0YSkKIAljaGFyCSpk YXRhOwogewogCWNoYXIJKnNyYyA9IChjaGFyICopYWRkcjsKKwlqbXBfYnVmIGpiOworCXZvaWQg KnByZXZfamI7CisJaW50IHJldDsKIAotCWlmIChkYl92YWxpZGF0ZV9hZGRyZXNzKCh1X2ludClz cmMpKSB7Ci0JCWRiX3ByaW50ZigiYWRkcmVzcyAlcCBpcyBpbnZhbGlkXG4iLCBzcmMpOwotCQly 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