Re: [fpc-pascal] DWARF line info cannot be used gdb
On 29 Dec 2008, at 23:57, Jonas Maebe wrote: On 29 Dec 2008, at 23:10, dmitry boyarintsev wrote: compile line fpc -Aas -gw2 test.pas gdb test.exe ... (gdb) b test.pas:7 warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) I got these warnings also on Mac OS X when I was initially on dwarf support there. Unfortunately, I don't remember anymore which fix exactly solved them, or what the root cause was. I believe it has something to do with a mismatch between the debug information and the regular symbol table of the application. Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 30 Dec 2008, at 09:38, Florian Klaempfl wrote: Jonas Maebe schrieb: On 29 Dec 2008, at 23:10, dmitry boyarintsev wrote: warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) I got these warnings also on Mac OS X when I was initially on dwarf support there. Unfortunately, I don't remember anymore which fix exactly solved them, or what the root cause was. Maybe using tf_dwarf_only_local_labels in target flags? That's something completely different. It only makes sure that all dwarf information for the current unit is written in the object file of the current unit, rather than that the compiler tries to reuse dwarf information written in object files of other units (e.g. if you use the longint type, then the compiler will write the dwarf info for the longint type to the current unit, rather than referring to the information written in the system unit's object file). The reason is that Mac OS X' linker requires that all labels used in dwarf sections are local to the current object file, as it does not relocate dwarf sections (to speed up linking large debug builds). Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
will try it tonight ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
Jonas Maebe schrieb: > > On 29 Dec 2008, at 23:10, dmitry boyarintsev wrote: > >> compile line >> fpc -Aas -gw2 test.pas >> gdb test.exe >> ... >> (gdb) b test.pas:7 >> warning: (Internal error: pc 0x40144e in read in psymtab, but not in >> symtab.) >> >> warning: (Internal error: pc 0x40144e in read in psymtab, but not in >> symtab.) > > I got these warnings also on Mac OS X when I was initially on dwarf > support there. Unfortunately, I don't remember anymore which fix exactly > solved them, or what the root cause was. Maybe using tf_dwarf_only_local_labels in target flags? ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
here you go (i've accidently deleted test.pas, and created new one, naming main.pas, but the code is the same) : (gdb) info line *0x40144e warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) Line 7 of "main.pas" starts at address 0x40144ewarning: (Internal error: pc 0x40 144e in read in psymtab, but not in symtab.) and ends at 0x401457warning: (Internal error: pc 0x401457 in read in psymtab, but not in symtab.) . (gdb) x/10i 0x40144e 0x40144ewarning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) : mov$0x5,%ax 0x401452warning: (Internal error: pc 0x401452 in read in psymtab, but not in symtab.) : call 0x401400warning: (Internal error: pc 0x401400 in read inpsymtab, but not in symtab.) 0x401457warning: (Internal error: pc 0x401457 in read in psymtab, but not in symtab.) : call 0x406ec0 0x40145cwarning: (Internal error: pc 0x40145c in read in psymtab, but not in symtab.) : mov%eax,%ebx 0x40145ewarning: (Internal error: pc 0x40145e in read in psymtab, but not in symtab.) : mov%ebx,%edx 0x401460warning: (Internal error: pc 0x401460 in read in psymtab, but not in symtab.) : mov$0x40a000,%ecx 0x401465warning: (Internal error: pc 0x401465 in read in psymtab, but not in symtab.) : mov$0x0,%eax 0x40146awarning: (Internal error: pc 0x40146a in read in psymtab, but not in symtab.) : call 0x407110 0x40146fwarning: (Internal error: pc 0x40146f in read in psymtab, but not in symtab.) : call 0x403b00 0x401474warning: (Internal error: pc 0x401474 in read in psymtab, but not in symtab.) : mov%ebx,%eax ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 29 Dec 2008, at 23:10, dmitry boyarintsev wrote: compile line fpc -Aas -gw2 test.pas gdb test.exe ... (gdb) b test.pas:7 warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) I got these warnings also on Mac OS X when I was initially on dwarf support there. Unfortunately, I don't remember anymore which fix exactly solved them, or what the root cause was. Could you execute the following gdb commands to to see which code this address corresponds to? info line *0x40144e x/10i 0x40144e Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
compile line fpc -Aas -gw2 test.pas gdb test.exe ... (gdb) b test.pas:7 warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) warning: (Internal error: pc 0x40144e in read in psymtab, but not in symtab.) Breakpoint 1 at 0x40144e: file test.pas, line 7. ... break point works ok. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 29 Dec 2008, at 21:16, dmitry boyarintsev wrote: gdb is able to set up break points, though warnings are still present. What kind of warnings? Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
i've also tried using external linker -Aas -Xe and it works too. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
thanks Florian and Jonas i've just did it, right before receiving your email. and it made it work. exe is compiled succesfully. gdb is able to set up break points, though warnings are still present. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
dmitry boyarintsev schrieb: > Jonas, > I've added tf_dwarf_relative_addresses to system information for win32 > target and have recompiled the compiler. > so now whenether i'm using 'gw2' or 'gw3' compiler options i'm getting > test.pas(9,1) Fatal: Internal error 200404124 > > test.pas(9,1) line 'end.' (see source is the at the first mail of this > thread') > > should 'tf_dwarf_relative_addresses' be used with some other flag? Please compile with -Aas for testing purposes. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
Jonas, I've added tf_dwarf_relative_addresses to system information for win32 target and have recompiled the compiler. so now whenether i'm using 'gw2' or 'gw3' compiler options i'm getting test.pas(9,1) Fatal: Internal error 200404124 test.pas(9,1) line 'end.' (see source is the at the first mail of this thread') should 'tf_dwarf_relative_addresses' be used with some other flag? ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 28 Dec 2008, at 17:22, dmitry boyarintsev wrote: all these command lines did not work fpc -Xe -gw2 test.pas fpc -Aas -gw2 test.pas fpc -Xe -Aas -gw2 test.pas in all three cases gdb returnes "invalid dwarf2 offset " Did you try with adding tf_dwarf_relative_addresses to the win32 target flags? The binutils for Linux do not follow the dwarf standard (expecting absolute addresses in some places where the dwarf standard says that you should use relative offsets), but since Linux support was implemented first that's also the default in FPC. Putting absolute addresses in places where relative offsets are expected certainly will result in invalid offsets. Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
all these command lines did not work fpc -Xe -gw2 test.pas fpc -Aas -gw2 test.pas fpc -Xe -Aas -gw2 test.pas in all three cases gdb returnes "invalid dwarf2 offset " ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 28 Dec 2008, at 16:35, dmitry boyarintsev wrote: the bug's been reported (#12872). if i try to fix the bug, should i first to look at PE file writting units? You could first try compiling with -Aas. If that solves the problem, then the bug is indeed in the internal assembler. If that does not solve the problem, you can try -Xe to also use the external linker. Another things that you could try is to add "tf_dwarf_relative_addresses" and/or "tf_dwarf_only_local_labels" to the "flags" field of the "system_i386_win32_info" typed constant in compiler/systems/i_win.pas Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
the bug's been reported (#12872). if i try to fix the bug, should i first to look at PE file writting units? ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 28 Dec 2008, at 16:03, dmitry boyarintsev wrote: It works fine on at least Mac OS X and Linux. I don't know if anyone ever tested it on Windows. If it doesn't work there, it should probably be disabled for that target until someone fixes it (to avoid situations like yours from happening). this odd, i thought debug info (both dwarf and stabs) is expected to be platform independant. The information itself is platform-independent, but how you have to encode it in the binary isn't (at least not completely). Please file a bug report about dwarf2 being broken for win32. Thanks, Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
> It works fine on at least Mac OS X and Linux. I don't know if anyone ever > tested it on Windows. If it doesn't work there, it should probably be > disabled for that target until someone fixes it (to avoid situations like > yours from happening). this odd, i thought debug info (both dwarf and stabs) is expected to be platform independant. thanks for the comments then. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 28 Dec 2008, at 15:51, dmitry boyarintsev wrote: -gw2 does not work either, it gives out identical error message. is it possible that fpc does not generates dwarf2? btw, i'm using latest fpc trunk, and gdb v6.7.50 win32 It works fine on at least Mac OS X and Linux. I don't know if anyone ever tested it on Windows. If it doesn't work there, it should probably be disabled for that target until someone fixes it (to avoid situations like yours from happening). Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
-gw2 does not work either, it gives out identical error message. is it possible that fpc does not generates dwarf2? btw, i'm using latest fpc trunk, and gdb v6.7.50 win32 ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] DWARF line info cannot be used gdb
On 28 Dec 2008, at 15:33, dmitry boyarintsev wrote: i'm trying to use gdb to debug FPC compiled file with DWARF debug information. fpc -gw3 test.pas Dwarf3 is not yet supported by current released versions of gdb. Use dwarf2 (-gw2) instead. Jonas ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
