[Bug breakpoints/17768] New: GDB for ARM does not allow breakpoints on some addresses

[Bug breakpoints/17768] New: GDB for ARM does not allow breakpoints on some addresses

[mark4th at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17768

            Bug ID: 17768
           Summary: GDB for ARM does not allow breakpoints on some
                    addresses
           Product: gdb
           Version: 7.8
            Status: NEW
          Severity: normal
          Priority: P2
         Component: breakpoints
          Assignee: unassigned at sourceware dot org
          Reporter: mark4th at gmail dot com

It seems like GDB for ARM does not allow breakpoints on any address unless its
aligned to a 32 bit boundry.  Thumb2 opcodes are 16/32 so this version of the
debugger should alow breakpoints on 16 bit alignments.

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[Bug breakpoints/17768] GDB for ARM does not allow breakpoints on some addresses

[dje at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17768

dje at google dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dje at google dot com

--- Comment #1 from dje at google dot com ---
This is a pretty data-free bug report.

Got repro?

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[Bug breakpoints/17768] GDB for ARM does not allow breakpoints on some addresses

[mark4th at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17768

--- Comment #2 from Mark Manning <mark4th at gmail dot com> ---
what data would you like?  
what is repro?

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[Bug breakpoints/17768] GDB for ARM does not allow breakpoints on some addresses

[dje at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17768

--- Comment #3 from dje at google dot com ---
Sorry, "repro" == "reproduction".

How do I recreate the problem?
Be as explicit as possible, don't leave anything out.
e.g., what test program can I use?
Got a complete transcript of a gdb session that shows the problem?
etc. etc. etc.

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[Bug breakpoints/17768] GDB for ARM does not allow breakpoints on some addresses

[mark4th at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17768

--- Comment #4 from Mark Manning <mark4th at gmail dot com> ---
actually now I cant reproduce it, my GDB must have been in an insane state
when I posted the bug, it would not allow me to set any breakpoint on any
address unless it was 32 bit aligned.... now it will !


On Mon, Dec 29, 2014 at 12:04 AM, dje at google dot com <
sourceware-bugzilla@sourceware.org> wrote:

> https://sourceware.org/bugzilla/show_bug.cgi?id=17768
>
> --- Comment #3 from dje at google dot com ---
> Sorry, "repro" == "reproduction".
>
> How do I recreate the problem?
> Be as explicit as possible, don't leave anything out.
> e.g., what test program can I use?
> Got a complete transcript of a gdb session that shows the problem?
> etc. etc. etc.
>
> --
> You are receiving this mail because:
> You reported the bug.
>

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[Bug breakpoints/17768] GDB for ARM does not allow breakpoints on some addresses

[mark4th at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17768

--- Comment #5 from Mark Manning <mark4th at gmail dot com> ---
actually, there is still something wrong, i set a breakpoint on address
0xnnnn and the breakpoint gets inserted somewhere else close by but within
a few opcodes, not at the specified location.  I can not supply you with
anything other than my executable and a description of how to reproduce the
problem.

This is with gdb v 7.8.1 running on my beagleboard xm under gentoo (arm
cortex-a7 processor but cortex-m4 code)

i woluld have no objections to sending you my sources if that helps


On Mon, Dec 29, 2014 at 4:03 AM, Mark Manning <mark4th@gmail.com> wrote:

> actually now I cant reproduce it, my GDB must have been in an insane state
> when I posted the bug, it would not allow me to set any breakpoint on any
> address unless it was 32 bit aligned.... now it will !
>
>
> On Mon, Dec 29, 2014 at 12:04 AM, dje at google dot com <
> sourceware-bugzilla@sourceware.org> wrote:
>
>> https://sourceware.org/bugzilla/show_bug.cgi?id=17768
>>
>> --- Comment #3 from dje at google dot com ---
>> Sorry, "repro" == "reproduction".
>>
>> How do I recreate the problem?
>> Be as explicit as possible, don't leave anything out.
>> e.g., what test program can I use?
>> Got a complete transcript of a gdb session that shows the problem?
>> etc. etc. etc.
>>
>> --
>> You are receiving this mail because:
>> You reported the bug.
>>
>
>
>
> --
> “When something can be read without effort,
> great effort has gone into its writing.”
>
> ― Enrique Jardiel Poncela ―
>

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Subject: [Bug gdb/17771] New: Crash parsing symbol
Date: Mon, 29 Dec 2014 13:16:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id\x17771

            Bug ID: 17771
           Summary: Crash parsing symbol
           Product: gdb
           Version: 7.8
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: unavowed at vexillium dot org

$ cat test.c
int test __asm__
("_Z16affine_transformIddLm2EE6VectorIDTmlcvT__EcvT0__EEXT1_EERK6MatrixIS1_XplT1_Li1EEXplT1_Li1EEERKS0_IS2_XT1_EE");

int
main (void)
{
  return 0;
}

$ gcc -o test test.c
$ gdb ./test
GNU gdb (GDB) 7.8
Copyright (C) 2014 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-unknown-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./test...Segmentation fault (core dumped)

Also affects GNU c++filt (GNU Binutils) 2.25

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