On 24 November 2015 at 00:38, Vladimir Olovyannikov <volov...@broadcom.com> wrote: > > >> -----Original Message----- >> From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] >> Sent: Tuesday, November 10, 2015 10:04 AM >> To: Vladimir Olovyannikov >> Cc: Cohen, Eugene; edk2-devel@lists.01.org >> Subject: Re: [edk2] Strange behavior of the DS-5 debugger on AARCH64 with >> step-by-step debugging in uefi >> >> On 10 November 2015 at 18:41, Vladimir Olovyannikov >> <volov...@broadcom.com> wrote: >> > Ard, >> > Many thanks for your help. It works. >> > >> >> Great! Thanks for reporting back. >> >> >> > -----Original Message----- >> > From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] >> > Sent: Monday, November 09, 2015 10:31 PM >> > To: Vladimir Olovyannikov >> > Cc: Cohen, Eugene; edk2-devel@lists.01.org >> > Subject: Re: [edk2] Strange behavior of the DS-5 debugger on AARCH64 >> with step-by-step debugging in uefi >> > >> > On 9 November 2015 at 19:01, Vladimir Olovyannikov >> > <volov...@broadcom.com> wrote: >> >> -----Original Message----- >> >> From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] >> >> Sent: Sunday, November 08, 2015 10:52 PM >> >> To: Vladimir Olovyannikov >> >> Cc: Cohen, Eugene; edk2-devel@lists.01.org >> >> Subject: Re: [edk2] Strange behavior of the DS-5 debugger on AARCH64 >> with step-by-step debugging in uefi >> >> >> >> On 6 November 2015 at 21:32, Vladimir Olovyannikov >> >> <volov...@broadcom.com>> wrote: >> >>>> Hello Ard, Eugene, >> >>>> Thank you for explanation. >> >>>> >> >>>> Ard, I tried the patch, but it cannot be applied to the latest (pulled a >> minute ago, git-svn-id: >> https://svn.code.sf.net/p/edk2/code/trunk/edk2@18732 6f19259b-4bc3- >> 4df7-8a09-765794883524) >> >>>> tree: all 3 hunks failed. Which commit should I be based on to apply the >> patch? >> >>>> >> >>>> Anyway I found the lines manually and changed them. However, when >> I try to >> >>>> >> >>>> source /uefi/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py -f >> (0x85000000,0x00280000) -m (0x80000000,0x40000000) -a >> >>>> I am getting >> >>>> >> >>>> ERROR(?): ValueError: need more than 1 value to unpack >> >>>> File " /uefi/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py", line >> 94, in <module>> >> >>>> armplatform_debugger.load_all_symbols() >> >>>> ERROR(CMD656): >> >>>> # in /uefi/BroadcomPlatformPkg/NS2Pkg/Scripts/armpkg_syms.ds:2 >> while executing: source >> /uefi/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py -f >> (0x85000000,0x00280000) -m (0x80000000,0x40000000) -a >> >>>> ! The script /uefi/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py >> failed to complete due to an error during execution of the script >> >>>> > [...] > Ard, I got a pretty much the same issue when I tried to do some debugging in > the ShellPkg. > Except Shell I can perfectly debug everything. > > 1. source / uefi/ArmPlatformPkg/Scripts/Ds5/cmd_load_symbols.py -f > (0x85000000,0x00280000) -m (0x80000000,0x40000000) -a > loads symbols fine, but does not recognize any module matching the > current PC if stopped in the shell. > 2. Loading symbols with "add-symbol-file > /uefi/Build/NS2Pkg/DEBUG_GCC49/AARCH64/ShellPkg/Application/Shell/Shell/DEBUG/Shell.dll > 0xB6926000" > "recognizes" modules (wrong ones though) but the source code does not > match disassembly. > > So with Shell debug using DS-5 the code does not match the source. > Is there a special linker setting I am missing or a technique? > I am using the latest UEFI code from > https://github.com/tianocore/edk2.git >
I am sorry, but since I don't have access to DS-5, I am not sure how to debug this. Is there any way for you to figure how much the offset is between the current and the correct location? I.e., by looking at the ELF asm dump and the instructions around the PC? Something in the order of 0x260 perhaps? -- Ard. _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
