From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sonic314-19.consmr.mail.ir2.yahoo.com (sonic314-19.consmr.mail.ir2.yahoo.com [77.238.177.145]) by sourceware.org (Postfix) with ESMTPS id A8D2F385E008 for ; Wed, 25 Mar 2020 14:22:25 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org A8D2F385E008 X-YMail-OSG: Whhd4poVM1nurFUQ.Kt_sdmAI_qtbUuXfe_Fiwp70W1hDHu4IgBg1dtOp6J17t7 70q.EF46XZ8xH01rmKVdVzSCLS6z7piQMv2Wy4vTa3V7jIUmxU52fEjCaRLBnWWg9ee5sURs6Ec9 nYxyXczw8LnAg5DyTw2TD3xYow8Bz6bxP8rb_1C1rwr_VTm8Qniyye7Ary97MOdnC5m_pxu9w.cy oUiE0aoiq.m3GZ8WWhYygZmJFHNbocAox3iw9zCVPXwtHt9oQnEpKIKwcyrCmS.0Ao1QowytI2up dzhqIhZYcuN6GqRiWOWBk1gvMIyrNGw.noWYc4QkPuGj5ANcRZCEkUqlASXuW9rnf5lio8bRC4nL 4_YX8O_a.WIHwSp_dBejzO0q0nAXMoMR3Z09mCbiP6rUXbZnM7RGxNfv4LJMVWJQy.h99qkfp75e QlkuY8nsoo6hLDCh177i_z_PH6hqZUu5e26DEcxfe7DauqCADzwU5okCd2wAkTZLk__CWgWUCgsq ALbbIdAeB5E2nUaW5gPIWhDIZVrmExgi6vMXSj3pYtme7XdpHRfK3bjhzHmpM1BHrdw32B7p2PDa heAkgeCM78y6OPyUrWK0hoo8jcwHE4cHij_ADJkrrvz3OqdA0QJfpBHPtTqrSOH0E_qHQW1.Ulbj XNhZAbz55edLJb7LWZ7ocTMmOghGOymOaQqEdEfNfBbrmoh8s1Hvjgu.A2GqtDey9D9TaHg782gQ BnwwAYA2AJBZyOY2bTVrst4ZVNxFc3HVsxSN0.CM49emg8aaYdfvokIRWngSY3gd0QryHxh2Peqp BMsZdcgEQv4nlywg2R.aWEkPQ1c0BI5iFE5NILwjXQvWrFWwc_iEOkrH8sr6k9elFF74H6cZs8g5 Y06yDBy1yslr5MMYj0Sh33KilW51RIWanwagqzmp28GZXO.1g5R9SsJD2UiR8xlulU0uauwi0A.8 zP87HASpX4sXl73lyKM2WK7.V6pd0ZR66gLg162pGM98ray4BQhyYRo.1v45.YHYZeLuF8sPaM2A I9GD3SBp6FaYZRo4opR7y6rZvpFI5zYqZz3sqSXE4JDMmt9U5hJY6guMqFQDYqxxH3.uF5tGv0GV amhadloYJvC3AALZqJDpG8dAsFnPur8JdRagV6keFf9nd5Nz76BOBWkMy031OWPgDQ8PkbrsUV1Z 8UrDBAigcnBHC9XYVTxt1cy0vxp5EoVRf7LaeIWzhXynBGN0SBbUk2d7qwMXAKha2ks676DnfZPP 67lTzYIC778UE18RWw9.D92AnpF5r.DaOZ1L4WGpaUpiHnVFimnhjIv7_RPlZp3AeWyFj5Itg74Z qLQZfYeGIwXGP Received: from sonic.gate.mail.ne1.yahoo.com by sonic314.consmr.mail.ir2.yahoo.com with HTTP; Wed, 25 Mar 2020 14:22:24 +0000 Date: Wed, 25 Mar 2020 14:22:10 +0000 (UTC) From: Hannes Domani To: Gdb-patches Message-ID: <840438313.3764470.1585146130281@mail.yahoo.com> In-Reply-To: <6fcfc7b1-5b1d-1bca-5bd8-06b075d626e6@simark.ca> References: <20200324192351.3904-1-ssbssa.ref@yahoo.de> <20200324192351.3904-1-ssbssa@yahoo.de> <6fcfc7b1-5b1d-1bca-5bd8-06b075d626e6@simark.ca> Subject: Re: [PATCH v2] Fix WOW64 process system DLL paths MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Mailer: WebService/1.1.15518 YMailNorrin Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:71.0) Gecko/20100101 Firefox/71.0 X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, BODY_8BITS, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GARBLED_BODY, GIT_PATCH_2, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Mar 2020 14:22:27 -0000 Am Mittwoch, 25. M=C3=A4rz 2020, 15:04:44 MEZ hat Simon Marchi Folgendes geschrieben: > On 2020-03-24 3:23 p.m., Hannes Domani via Gdb-patches wrote: > > > GetModuleFileNameEx returns for some DLLs of WOW64 processes > > the path inside the 64bit system directory instead of the 32bit > > syswow64 directory. > > > > Problem happens e.g. with dbghelp.dll: > > > > (gdb) start > > Temporary breakpoint 1 at 0x415a00: file fiber.cpp, line 430. > > Starting program: C:\src\tests\fiber.exe > > warning: `C:\Windows\system32\dbghelp.dll': Shared library architecture= i386:x86-64 is not compatible with target architecture i386. > > > > Temporary breakpoint 1, main () at fiber.cpp:430 > > 430=C2=A0=C2=A0=C2=A0 { > > (gdb) info sharedlibrary > > From=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 To=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Syms Read=C2=A0 Shared Object Library > > 0x77070000=C2=A0 0x771d4d20=C2=A0 Yes (*)=C2=A0=C2=A0=C2=A0 C:\Windows\= SysWOW64\ntdll.dll > > 0x74dc0000=C2=A0 0x74ebad9c=C2=A0 Yes (*)=C2=A0=C2=A0=C2=A0 C:\Windows\= syswow64\kernel32.dll > > 0x75341000=C2=A0 0x75386a18=C2=A0 Yes (*)=C2=A0=C2=A0=C2=A0 C:\Windows\= syswow64\KernelBase.dll > > 0x6f6a1000=C2=A0 0x6f7c48fc=C2=A0 Yes (*)=C2=A0=C2=A0=C2=A0 C:\Windows\= system32\dbghelp.dll > > 0x74d01000=C2=A0 0x74dab2c4=C2=A0 Yes (*)=C2=A0=C2=A0=C2=A0 C:\Windows\= syswow64\msvcrt.dll > > (*): Shared library is missing debugging information. > > > > This detects this situation and converts the DLL path to the > > syswow64 equivalent. > > > > gdb/ChangeLog: > > > > 2020-03-24=C2=A0 Hannes Domani=C2=A0 > > > >=C2=A0=C2=A0=C2=A0=C2=A0 * windows-nat.c (windows_add_all_dlls): Fix sys= tem dll paths. > > --- > > v2: > > - added error check with gdb_assert's > > - use std::string for newly assembled dll path > > > Btw, I found this Stack Overflow question that seems to be about this exa= ct > problem (which you may have already found too if you researched the topic= ), > but honestly I don't understand a thing from the answer. > >=C2=A0=C2=A0 https://stackoverflow.com/questions/46403532/getmodulefilenam= eex-on-32bit-process-from-64bit-process-on-windows-10 Yes, I did see this when I googled this problem. Basically, if you use GetMappedFileName instead of GetModuleFileNameEx, you get the correct path (I tested this also), but it's returned in the nt-path format: \Device\HarddiskVolume9\Windows\SysWOW64\dbghelp.dll Which you then have to convert to the "normal" path every one else expects. But I figured my way with GetSystemWow64Directory is simpler. Is the v2 OK to commit? Hannes