Re: [fpc-devel] win64 dwarf patch
And3mD schrieb: I added bug report about using Tag as Pointers in IDE http://bugs.freepascal.org/view.php?id=17642 For some reason (read-only???) I could not add a note there, so I'll present my ideas here: IMO Tag should become an int64 for all components, to overcome platform and streaming problems. More properties can be introduced, for best compatibility with existing code (Tag64, TagPtr). These properties could be based on the same int64 field, i.e. r/w part of it, and only that field is streamed. And when we just are extending the type, we also could consider to make it big enough to hold a method reference... DoDi ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [Lazarus] [fpc-devel] win64 dwarf patch
On Sat, 16 Oct 2010, Hans-Peter Diettrich wrote: And3mD schrieb: I added bug report about using Tag as Pointers in IDE http://bugs.freepascal.org/view.php?id=17642 For some reason (read-only???) I could not add a note there, so I'll present my ideas here: IMO Tag should become an int64 for all components, to overcome platform and streaming problems. More properties can be introduced, for best compatibility with existing code (Tag64, TagPtr). These properties could be based on the same int64 field, i.e. r/w part of it, and only that field is streamed. And when we just are extending the type, we also could consider to make it big enough to hold a method reference... Using tag as a pointer is plain wrong coding, so this change will not make it. Moreover, streaming it is pure nonsense: There is no guarantee that your pointer will point to the same object, or indeed whether it will exist at all when the program is run. The IDE code is simply wrong, and should be fixed properly by creating a TMenuItem descendent that contains a reference to the notebook page, and use that class when constructing the menu. Michael. ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] win64 dwarf patch
I added bug report about using Tag as Pointers in IDE http://bugs.freepascal.org/view.php?id=17642 I know lazarus/fpc sources very poorly, but maybe you can separate some gdb support classes to avoid another SEGFAULTs from IDE on x64. Greetings Dnia 15-10-2010 o 21:23:54 Willibald Krenn willibald.kr...@gmx.at napisał(a): Am 15.10.2010 19:58, schrieb And3mD: Hello, I found something I think can be problem with lazarus on win64: True, using 32-bit wide Tag fields to store pointers is a bad idea on x64. However, the problems with the debugger are more related to the use of StrToIntDef instead of StrToInt64Def... (See attached file.) Still, even when this is patch applied, debugging with an image base of 32bit is not stable. Whenever I put a breakpoint on a writeln and I single-step to the next statement, I get a segfault. But this may very well be caused by GDB. Cheers, Willi ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
RE: [fpc-devel] win64 dwarf patch
-Message d'origine- De : fpc-devel-boun...@lists.freepascal.org [mailto:fpc-devel- boun...@lists.freepascal.org] De la part de Willibald Krenn Envoyé : Wednesday, October 13, 2010 2:54 AM À : FPC developers' list Objet : Re: [fpc-devel] win64 dwarf patch Am 13.10.2010 01:40, schrieb Willibald Krenn: Hi, After adding 'tf_dwarf_only_local_labels' to the Hi Willi, I tested and committed this change as rev 16151 in trunk, thanks for this! flags in i_win.pas (line 105) dwarf2 seems to be working. (Even without -WB0040). Additional remark: The -WB option is still needed, otherwise, e.g., 'disas' is not working correctly in gdb. What version of the win64 GDB are you using? I am using a recently generated from GDB cvs HEAD and I get this: C:\cygwin\home\pierre\pas\trunk\fpcsrc\compilergdb64 ./ppcx64.exe GNU gdb (GDB) 7.2.50.20100928-cvs Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as x86_64-w64-mingw32. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/... Reading symbols from C:\cygwin\home\pierre\pas\trunk\fpcsrc\compiler/./ppcx64.ex e...done. (gdb) inf fun err All functions matching regular expression err: File system.pp: procedure fpc_abstracterrorintern; (gdb) disas main Dump of assembler code for function main: 0x00011850 +0: push %rbp 0x00011851 +1: mov%rsp,%rbp 0x00011854 +4: sub$0x40,%rsp 0x00011858 +8: callq 0x1af60 fpc_initializeunits 0x0001185d +13:mov0x1cd8cc(%rip),%rax# 0x1001cf130 TC_SYSTEM_EXITPROC 0x00011864 +20:mov%rax,0x23d795(%rip)# 0x10023f000 U_P$PP_OLDEXIT Note that I didn't use the -WB option, so that the default 0x1 is used, but this doesn't seem to generate disassembly problems. Thanks again for the 'tf_dwarf_only_local_labels' fix. Pierre ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] win64 dwarf patch
Am 13.10.2010 09:56, schrieb Pierre Free Pascal: I tested and committed this change as rev 16151 in trunk, thanks for this! Cool - thanks! What version of the win64 GDB are you using? It says 7.2. Probably I should get a newer version. Some output: 0x00011674 +308: mov$0x0,%ecx 0x00011679 +313: callq 0x1dcc0 TYPINFO_finalize_implicit+4294845664 0x0001167e +318: callq 0x19880 TYPINFO_finalize_implicit+4294828192 0x00011683 +323: mov%rbx,%rcx 0x00011686 +326: callq 0x1dac0 TYPINFO_finalize_implicit+4294845152 0x0001168b +331: callq 0x19880 TYPINFO_finalize_implicit+4294828192 0x00011690 +336: mov%rbp,%rcx 0x00011693 +339: callq 0x11710 PRINT Which seems to be totally wrong. I am using a recently generated from GDB cvs HEAD and I get this: Note that I didn't use the -WB option, so that the default 0x1 is used, but this doesn't seem to generate disassembly problems. Yes, your output seems to be fine! I'll try upgrading my gdb to a newer version - hope this helps. If this is working, then I think we should switch to DWARF2 on Win64 and close all related bugs in mantis. ;-) Cheers, Willi ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] win64 dwarf patch
Am 13.10.2010 21:34, schrieb Willibald Krenn:
Yes, your output seems to be fine! I'll try upgrading my gdb to a newer
version - hope this helps. If this is working, then I think we should
switch to DWARF2 on Win64 and close all related bugs in mantis. ;-)
I upgraded my version of gdb and that fixed the problem. Small
disadvantage, though: DWARF debug info disables smart linking :-(.
Anyway, while fpc and gdb are working now, Lazarus fails to pick up the
correct address if it is outside of the 32 bit range:
info address FPC_RAISEEXCEPTION
info address FPC_RAISEEXCEPTION\n
~Symbol \FPC_RAISEEXCEPTION\ is at 0x18a30 in a file compiled
without debugging.\n
^done
(gdb)
-break-insert *35376
^done,bkpt={number=2,type=breakpoint,disp=keep,enabled=y,addr=0x8a30,at=,times=0,original-location=*35376}
(gdb)
Cheers,
Willi
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RE: [fpc-devel] win64 dwarf patch
-Message d'origine-
De : fpc-devel-boun...@lists.freepascal.org [mailto:fpc-devel-
boun...@lists.freepascal.org] De la part de Willibald Krenn
Envoyé : Wednesday, October 13, 2010 11:53 PM
À : fpc-devel@lists.freepascal.org
Objet : Re: [fpc-devel] win64 dwarf patch
Am 13.10.2010 21:34, schrieb Willibald Krenn:
Yes, your output seems to be fine! I'll try upgrading my gdb to a
newer
version - hope this helps. If this is working, then I think we should
switch to DWARF2 on Win64 and close all related bugs in mantis. ;-)
I upgraded my version of gdb and that fixed the problem. Small
disadvantage, though: DWARF debug info disables smart linking :-(.
Anyway, while fpc and gdb are working now, Lazarus fails to pick up the
correct address if it is outside of the 32 bit range:
info address FPC_RAISEEXCEPTION
info address FPC_RAISEEXCEPTION\n
~Symbol \FPC_RAISEEXCEPTION\ is at 0x18a30 in a file compiled
without debugging.\n
^done
(gdb)
-break-insert *35376
^done,bkpt={number=2,type=breakpoint,disp=keep,enabled=y,addr=
0x8a30,at=,times=0,original-location=*35376}
(gdb)
This seems like a Lazarus specific problem,
the address is certainly cropped to 32-bit somewhere...
I am sorry, but I know almost nothing about
Lazarus source code, so you will need to find someone else
to fix this.
An interesting piece of information
would be to know if x86_64-linux is working
without this limitation.
Pierre
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Re: [fpc-devel] win64 dwarf patch
14.10.2010 1:52, Willibald Krenn пишет:
Am 13.10.2010 21:34, schrieb Willibald Krenn:
Yes, your output seems to be fine! I'll try upgrading my gdb to a newer
version - hope this helps. If this is working, then I think we should
switch to DWARF2 on Win64 and close all related bugs in mantis. ;-)
I upgraded my version of gdb and that fixed the problem. Small
disadvantage, though: DWARF debug info disables smart linking :-(.
Anyway, while fpc and gdb are working now, Lazarus fails to pick up the
correct address if it is outside of the 32 bit range:
info address FPC_RAISEEXCEPTION
info address FPC_RAISEEXCEPTION\n
~Symbol \FPC_RAISEEXCEPTION\ is at 0x18a30 in a file compiled
without debugging.\n
^done
(gdb)
-break-insert *35376
^done,bkpt={number=2,type=breakpoint,disp=keep,enabled=y,addr=0x8a30,at=,times=0,original-location=*35376}
(gdb)
Please create a bug report for Lazarus with a test project.
--
Best regards,
Maxim Ganetsky mailto:gan...@narod.ru
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[fpc-devel] win64 dwarf patch
Hi, After adding 'tf_dwarf_only_local_labels' to the flags in i_win.pas (line 105) dwarf2 seems to be working. (Even without -WB0040). Cheers, Willi ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
Re: [fpc-devel] win64 dwarf patch
Am 13.10.2010 01:40, schrieb Willibald Krenn: Hi, After adding 'tf_dwarf_only_local_labels' to the flags in i_win.pas (line 105) dwarf2 seems to be working. (Even without -WB0040). Additional remark: The -WB option is still needed, otherwise, e.g., 'disas' is not working correctly in gdb. Willi ___ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
