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* [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely
@ 2021-02-08 11:32 shahab.vahedi at gmail dot com
  2021-02-08 11:53 ` [Bug tdep/27369] " shahab.vahedi at gmail dot com
                   ` (22 more replies)
  0 siblings, 23 replies; 24+ messages in thread
From: shahab.vahedi at gmail dot com @ 2021-02-08 11:32 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

            Bug ID: 27369
           Summary: ARC: Stepping over atomic instruction sequences loops
                    infinitely
           Product: gdb
           Version: HEAD
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tdep
          Assignee: unassigned at sourceware dot org
          Reporter: shahab.vahedi at gmail dot com
  Target Milestone: ---

When stepping over thread-lock related codes (in uClibc), the inferior process
gets stuck and never manages to enter the critical section:

------8<-------
 1 size_t fwrite(const void * __restrict ptr, size_t size,
 2               size_t nmemb, register FILE * __restrict stream)
 3 {
 4     size_t retval;
 5     __STDIO_AUTO_THREADLOCK_VAR;
 6 
 7 >   __STDIO_AUTO_THREADLOCK(stream);
 8 
 9     retval = fwrite_unlocked(ptr, size, nmemb, stream);
10 
11     __STDIO_AUTO_THREADUNLOCK(stream);
12 
13     return retval;
14 }
------>8-------

Here, we are at line 7. Using the "next" command leads no where. However,
setting a breakpoint on line 9 and issuing "continue" works.

Looking at the assembly instructions reveals that we're dealing with the
critical section entry code [1] that should never be interrupted, in this
case by the debugger's implicit breakpoints:

------8<-------
  ...
1 add_s   r0,r13,0x38
2 mov_s   r3,1
3 llock   r2,[r0]        <-.
4 brne.nt r2,0,14     --.  |
5 scond   r3,[r0]       |  |
6 bne     -10         --|--'
7 brne_s  r2,0,84     <-'
  ...
------>8-------

Lines 3 until 5 (inclusive) are supposed to be executed atomically. Therefore,
GDB should never (implicitly) insert a breakpoint on lines 4 and 5, else the
program will try to acquire the lock again by jumping back to line 3 and
gets stuck in an infinite loop.

The solution is to make GDB aware of these patterns so it inserts breakpoints
after the sequence -- line 6 in this example.

[1]
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/libc/sysdeps/linux/arc/bits/atomic.h#n46
------8<-------
#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval)     \
  ({                                                                    \
        __typeof(oldval) prev;                                          \
                                                                        \
        __asm__ __volatile__(                                           \
        "1:     llock   %0, [%1]        \n"                             \
        "       brne    %0, %2, 2f      \n"                             \
        "       scond   %3, [%1]        \n"                             \
        "       bnz     1b              \n"                             \
        "2:                             \n"                             \
        : "=&r"(prev)                                                   \
        : "r"(mem), "ir"(oldval),                                       \
          "r"(newval) /* can't be "ir". scond can't take limm for "b" */\
        : "cc", "memory");                                              \
                                                                        \
        prev;                                                           \
  })
------>8-------

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
@ 2021-02-08 11:53 ` shahab.vahedi at gmail dot com
  2021-02-08 12:03 ` cvs-commit at gcc dot gnu.org
                   ` (21 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: shahab.vahedi at gmail dot com @ 2021-02-08 11:53 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Shahab <shahab.vahedi at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Build|                            |x86_64-pc-linux-gnu
             Target|                            |arc-snps-linux-uclibc
               Host|                            |x86_64-pc-linux-gnu

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
  2021-02-08 11:53 ` [Bug tdep/27369] " shahab.vahedi at gmail dot com
@ 2021-02-08 12:03 ` cvs-commit at gcc dot gnu.org
  2021-02-08 12:07 ` luis.machado at linaro dot org
                   ` (20 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-02-08 12:03 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Shahab Vahedi <shahab@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9b3e4b5d74a8170a8f9f224c36c651661fc26954

commit 9b3e4b5d74a8170a8f9f224c36c651661fc26954
Author: Shahab Vahedi <shahab@synopsys.com>
Date:   Thu Oct 31 17:33:08 2019 +0100

    gdb: Do not interrupt atomic sequences for ARC

    When stepping over thread-lock related codes (in uClibc), the inferior
process
    gets stuck and never manages to enter the critical section:

    ------8<-------
     1 size_t fwrite(const void * __restrict ptr, size_t size,
     2               size_t nmemb, register FILE * __restrict stream)
     3 {
     4     size_t retval;
     5     __STDIO_AUTO_THREADLOCK_VAR;
     6
     7 >   __STDIO_AUTO_THREADLOCK(stream);
     8
     9     retval = fwrite_unlocked(ptr, size, nmemb, stream);
    10
    11     __STDIO_AUTO_THREADUNLOCK(stream);
    12
    13     return retval;
    14 }
    ------>8-------

    Here, we are at line 7.  Using the "next" command leads no where.
    However, setting a breakpoint on line 9 and issuing "continue" works.

    Looking at the assembly instructions reveals that we're dealing with the
    critical section entry code [1] that should never be interrupted, in this
    case by the debugger's implicit breakpoints:

    ------8<-------
      ...
    1 add_s   r0,r13,0x38
    2 mov_s   r3,1
    3 llock   r2,[r0]        <-.
    4 brne.nt r2,0,14     --.  |
    5 scond   r3,[r0]       |  |
    6 bne     -10         --|--'
    7 brne_s  r2,0,84     <-'
      ...
    ------>8-------

    Lines 3 until 5 (inclusive) are supposed to be executed atomically.
    Therefore, GDB should never (implicitly) insert a breakpoint on lines
    4 and 5, else the program will try to acquire the lock again by jumping
    back to line 3 and gets stuck in an infinite loop.

    The solution is to make GDB aware of these patterns so it inserts
    breakpoints after the sequence -- line 6 in this example.

    [1]
   
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/libc/sysdeps/linux/arc/bits/atomic.h#n46
    ------8<-------
      ({                                                                    \
            __typeof(oldval) prev;                                          \
                                                                            \
            __asm__ __volatile__(                                           \
            "1:     llock   %0, [%1]        \n"                             \
            "       brne    %0, %2, 2f      \n"                             \
            "       scond   %3, [%1]        \n"                             \
            "       bnz     1b              \n"                             \
            "2:                             \n"                             \
            : "=&r"(prev)                                                   \
            : "r"(mem), "ir"(oldval),                                       \
              "r"(newval) /* can't be "ir". scond can't take limm for "b" */\
            : "cc", "memory");                                              \
                                                                            \
            prev;                                                           \
      })
    ------>8-------
    "llock" (Load Locked) loads the 32-bit word pointed by the source
    operand.  If the load is completed without any interruption or
    exception, the physical address is remembered, in Lock Physical Address
    (LPA), and the Lock Flag (LF) is set to 1.  LF is a non-architecturally
    visible flag and is cleared whenever an interrupt or exception takes
    place.  LF is also cleared (atomically) whenever another process writes
    to the LPA.

    "scond" (Store Conditional) will write to the destination address if
    and only if the LF is set to 1.  When finished, with or without a write,
    it atomically copies the LF value to ZF (Zero Flag).

    These two instructions together provide the mechanism for entering a
    critical section.  The code snippet above comes from uClibc:
    -----------------------

    v3 (after Tom's remarks[2]):
     handle_atomic_sequence()
      - no need to initialize the std::vector with "{}"
      - fix typo in comments: "conditial" -> "conditional"
      - add braces to the body of "if" condition because of the comment line
     arc_linux_software_single_step()
      - make the performance slightly more efficient by moving a few
        variables after the likely "return" point.

    v2 (after Simon's remarks[3]):
    - handle_atomic_sequence() gets a copy of an instruction instead of
      a reference.
    - handle_atomic_sequence() asserts if the given instruction is an llock.

    [2]
    https://sourceware.org/pipermail/gdb-patches/2021-February/175805.html

    [3]
    https://sourceware.org/pipermail/gdb-patches/2021-January/175487.html

    gdb/ChangeLog:

            PR tdep/27369
            * arc-linux-tdep.c (handle_atomic_sequence): New.
            (arc_linux_software_single_step): Call handle_atomic_sequence().

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
  2021-02-08 11:53 ` [Bug tdep/27369] " shahab.vahedi at gmail dot com
  2021-02-08 12:03 ` cvs-commit at gcc dot gnu.org
@ 2021-02-08 12:07 ` luis.machado at linaro dot org
  2021-02-08 12:12 ` cvs-commit at gcc dot gnu.org
                   ` (19 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: luis.machado at linaro dot org @ 2021-02-08 12:07 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Luis Machado <luis.machado at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |luis.machado at linaro dot org
   Target Milestone|---                         |10.2

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (2 preceding siblings ...)
  2021-02-08 12:07 ` luis.machado at linaro dot org
@ 2021-02-08 12:12 ` cvs-commit at gcc dot gnu.org
  2021-02-08 12:32 ` shahab.vahedi at gmail dot com
                   ` (18 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-02-08 12:12 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-10-branch branch has been updated by Shahab Vahedi
<shahab@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d8979e81fdae49a0a3d5ba484ef870f54e2f750d

commit d8979e81fdae49a0a3d5ba484ef870f54e2f750d
Author: Shahab Vahedi <shahab@synopsys.com>
Date:   Thu Oct 31 17:33:08 2019 +0100

    gdb: Do not interrupt atomic sequences for ARC

    When stepping over thread-lock related codes (in uClibc), the inferior
process
    gets stuck and never manages to enter the critical section:

    ------8<-------
     1 size_t fwrite(const void * __restrict ptr, size_t size,
     2               size_t nmemb, register FILE * __restrict stream)
     3 {
     4     size_t retval;
     5     __STDIO_AUTO_THREADLOCK_VAR;
     6
     7 >   __STDIO_AUTO_THREADLOCK(stream);
     8
     9     retval = fwrite_unlocked(ptr, size, nmemb, stream);
    10
    11     __STDIO_AUTO_THREADUNLOCK(stream);
    12
    13     return retval;
    14 }
    ------>8-------

    Here, we are at line 7.  Using the "next" command leads no where.
    However, setting a breakpoint on line 9 and issuing "continue" works.

    Looking at the assembly instructions reveals that we're dealing with the
    critical section entry code [1] that should never be interrupted, in this
    case by the debugger's implicit breakpoints:

    ------8<-------
      ...
    1 add_s   r0,r13,0x38
    2 mov_s   r3,1
    3 llock   r2,[r0]        <-.
    4 brne.nt r2,0,14     --.  |
    5 scond   r3,[r0]       |  |
    6 bne     -10         --|--'
    7 brne_s  r2,0,84     <-'
      ...
    ------>8-------

    Lines 3 until 5 (inclusive) are supposed to be executed atomically.
    Therefore, GDB should never (implicitly) insert a breakpoint on lines
    4 and 5, else the program will try to acquire the lock again by jumping
    back to line 3 and gets stuck in an infinite loop.

    The solution is to make GDB aware of these patterns so it inserts
    breakpoints after the sequence -- line 6 in this example.

    [1]
   
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/tree/libc/sysdeps/linux/arc/bits/atomic.h#n46
    ------8<-------
      ({                                                                    \
            __typeof(oldval) prev;                                          \
                                                                            \
            __asm__ __volatile__(                                           \
            "1:     llock   %0, [%1]        \n"                             \
            "       brne    %0, %2, 2f      \n"                             \
            "       scond   %3, [%1]        \n"                             \
            "       bnz     1b              \n"                             \
            "2:                             \n"                             \
            : "=&r"(prev)                                                   \
            : "r"(mem), "ir"(oldval),                                       \
              "r"(newval) /* can't be "ir". scond can't take limm for "b" */\
            : "cc", "memory");                                              \
                                                                            \
            prev;                                                           \
      })
    ------>8-------
    "llock" (Load Locked) loads the 32-bit word pointed by the source
    operand.  If the load is completed without any interruption or
    exception, the physical address is remembered, in Lock Physical Address
    (LPA), and the Lock Flag (LF) is set to 1.  LF is a non-architecturally
    visible flag and is cleared whenever an interrupt or exception takes
    place.  LF is also cleared (atomically) whenever another process writes
    to the LPA.

    "scond" (Store Conditional) will write to the destination address if
    and only if the LF is set to 1.  When finished, with or without a write,
    it atomically copies the LF value to ZF (Zero Flag).

    These two instructions together provide the mechanism for entering a
    critical section.  The code snippet above comes from uClibc:
    -----------------------

    v3 (after Tom's remarks[2]):
     handle_atomic_sequence()
      - no need to initialize the std::vector with "{}"
      - fix typo in comments: "conditial" -> "conditional"
      - add braces to the body of "if" condition because of the comment line
     arc_linux_software_single_step()
      - make the performance slightly more efficient by moving a few
        variables after the likely "return" point.

    v2 (after Simon's remarks[3]):
    - handle_atomic_sequence() gets a copy of an instruction instead of
      a reference.
    - handle_atomic_sequence() asserts if the given instruction is an llock.

    [2]
    https://sourceware.org/pipermail/gdb-patches/2021-February/175805.html

    [3]
    https://sourceware.org/pipermail/gdb-patches/2021-January/175487.html

    gdb/ChangeLog:

            PR tdep/27369
            * arc-linux-tdep.c (handle_atomic_sequence): New.
            (arc_linux_software_single_step): Call handle_atomic_sequence().

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (3 preceding siblings ...)
  2021-02-08 12:12 ` cvs-commit at gcc dot gnu.org
@ 2021-02-08 12:32 ` shahab.vahedi at gmail dot com
  2021-06-27 18:00 ` ahmedsayeed1982 at yahoo dot com
                   ` (17 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: shahab.vahedi at gmail dot com @ 2021-02-08 12:32 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Shahab <shahab.vahedi at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Shahab <shahab.vahedi at gmail dot com> ---
This PR was solved on master with this commit:

| commit 9b3e4b5d74a8170a8f9f224c36c651661fc26954
| From: Shahab Vahedi <shahab@synopsys.com>
| Date: Thu, 31 Oct 2019 17:33:08 +0100
| Subject: gdb: Do not interrupt atomic sequences for ARC

The patch above was also pushed to gdb-10-branch:

| commit d8979e81fdae49a0a3d5ba484ef870f54e2f750d
| From: Shahab Vahedi <shahab@synopsys.com>
| Date: Thu, 31 Oct 2019 17:33:08 +0100
| Subject: gdb: Do not interrupt atomic sequences for ARC

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (4 preceding siblings ...)
  2021-02-08 12:32 ` shahab.vahedi at gmail dot com
@ 2021-06-27 18:00 ` ahmedsayeed1982 at yahoo dot com
  2021-08-19  6:01 ` ucelsanicin at yahoo dot com
                   ` (16 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: ahmedsayeed1982 at yahoo dot com @ 2021-06-27 18:00 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Ahmed Sayeed <ahmedsayeed1982 at yahoo dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ahmedsayeed1982 at yahoo dot com

--- Comment #4 from Ahmed Sayeed <ahmedsayeed1982 at yahoo dot com> ---
Here, we are at line 7. Using the "next" command leads no where. However,
setting a breakpoint on line 9 and issuing "continue" works.

Looking at the assembly instructions reveals that we're dealing with the
critical section entry code [1] that should never be interrupted, in this
case by the debugger's implicit breakpoints:

------8<-------
  ...
1 add_s   r0,r13,0x38
2 mov_s   r3,1
3 llock   r2,[r0]        <-.
4 brne.nt r2,0,14     --.  |
5 scond   r3,[r0]       |  |
6 bne     -10         --|--'
7 brne_s  r2,0,84     <-'
  ...
------>8-------

Lines 3 until 5 (inclusive) are supposed to be executed atomically. Therefore,
GDB should never (implicitly) insert a breakpoint on lines 4 and 5, else the
program will try to acquire the lock again by jumping back to line 3 and
gets stuck in an infinite loop.

The solution is to make GDB aware of these patterns so it inserts breakpoints
after the sequence -- line 6 in this example. http://toblek.xyz/

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (5 preceding siblings ...)
  2021-06-27 18:00 ` ahmedsayeed1982 at yahoo dot com
@ 2021-08-19  6:01 ` ucelsanicin at yahoo dot com
  2021-09-02 11:06 ` donipah907 at mtlcz dot com
                   ` (15 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: ucelsanicin at yahoo dot com @ 2021-08-19  6:01 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Ucel Sani <ucelsanicin at yahoo dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ucelsanicin at yahoo dot com

--- Comment #5 from Ucel Sani <ucelsanicin at yahoo dot com> ---
On further thought, we shouldn't be encouraging palindromish REs in the manual,
so that naive users aren't drawn into this mess. So I installed the attached
further patch to the documentation.

Of course it would be better to fix the back-reference bugs but this is low
priority and I doubt whether anybody has the time.
[0001-doc-don-t-encourage-back-references.patch
credit https://trellising-net.com/ https://www.india-visa-online.com/visa/
https://www.india-visa-online.org/visa/
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https://www.espresso-international.nl/ https://www.espresso-international.hu/
https://www.espresso-international.fr/ http://www.iu-bloomington.com/
https://komiya-dental.com/ http://steemfilter.space/
http://michielleunens.tech/ http://sleepypoetstuff.website/
http://biciclubvalencia.website/ http://reputation-management.site/
http://pitesti.online/ http://tobuweb.space/ http://ancientmariners.online/
http://betwsycoednet.online http://kuzin.website http://kundaliniyoga.tech
http://localpay.tech http://my-iframe.online http://getimov.xyz/
http://ooviv.xyz/ http://mirei.xyz http://toblek.xyz/ http://sevenwonders.store
http://peralga.xyz/ https://texastourgear.live
http://freixenet.site/influencerprogramme/ http://timvanorden.store/
http://rhee.tech/ http://f3group.online/ https://www.hlungomare.store/
https://www.lungomarebikehotel.store http://www.lvmaimai.xyz/
https://sozdanie.site/ http://agens128.site/ http://ruirui.store/
http://www.foamhands.store/ http://www.i-obchody.info/
http://naughtyrobot.digital/ https://www.webb-dev.co.uk/
https://waytowhatsnext.com/ http://troubadourtunes.online/

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (6 preceding siblings ...)
  2021-08-19  6:01 ` ucelsanicin at yahoo dot com
@ 2021-09-02 11:06 ` donipah907 at mtlcz dot com
  2021-09-02 11:13 ` mark at klomp dot org
                   ` (14 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: donipah907 at mtlcz dot com @ 2021-09-02 11:06 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

james rohan <donipah907 at mtlcz dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |donipah907 at mtlcz dot com

--- Comment #6 from james rohan <donipah907 at mtlcz dot com> ---
http://bulletsbaseball.com/
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http://ififaworldcup.com/
http://b4blogs.com/
http://targetedtrafficcrew.com/
http://advertising-markets.com/
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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (7 preceding siblings ...)
  2021-09-02 11:06 ` donipah907 at mtlcz dot com
@ 2021-09-02 11:13 ` mark at klomp dot org
  2021-09-06  9:09 ` focixujo at livinginsurance dot co.uk
                   ` (13 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: mark at klomp dot org @ 2021-09-02 11:13 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at klomp dot org

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (8 preceding siblings ...)
  2021-09-02 11:13 ` mark at klomp dot org
@ 2021-09-06  9:09 ` focixujo at livinginsurance dot co.uk
  2021-09-10 19:39 ` mehmetgelisin at aol dot com
                   ` (12 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: focixujo at livinginsurance dot co.uk @ 2021-09-06  9:09 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

james robin <focixujo at livinginsurance dot co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |focixujo at livinginsurance dot co
                   |                            |.uk

--- Comment #7 from james robin <focixujo at livinginsurance dot co.uk> ---
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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (9 preceding siblings ...)
  2021-09-06  9:09 ` focixujo at livinginsurance dot co.uk
@ 2021-09-10 19:39 ` mehmetgelisin at aol dot com
  2021-09-22 10:11 ` diheto5497 at secbuf dot com
                   ` (11 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: mehmetgelisin at aol dot com @ 2021-09-10 19:39 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Mehmet gelisin <mehmetgelisin at aol dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mehmetgelisin at aol dot com

--- Comment #8 from Mehmet gelisin <mehmetgelisin at aol dot com> ---
[gdb/symtab] Handle DW_TAG_type_unit in process_psymtab_comp_unit

    When running test-case gdb.cp/cpexprs-debug-types.exp with target board
    unix/gdb:debug_flags=-gdwarf-5, I run into: http://www-look-4.com/
    ...
    (gdb) file cpexprs-debug-types^M
    Reading symbols from cpexprs-debug-types...^M http://www.compilatori.com/
    ERROR: Couldn't load cpexprs-debug-types into GDB (eof).
    ERROR: Couldn't send delete breakpoints to GDB.
http://www.wearelondonmade.com/ 
    ERROR: GDB process no longer exists
    GDB process exited with wait status 23054 exp9 0 0 CHILDKILLED SIGABRT 
http://www.jopspeech.com/ SIGABRT
    ...

    We're running into this abort in process_psymtab_comp_unit:
http://joerg.li/
    ...
      switch (reader.comp_unit_die->tag)
        { http://connstr.net/ 
        case DW_TAG_compile_unit:
          this_cu->unit_type = DW_UT_compile;
          break;
        case DW_TAG_partial_unit: http://embermanchester.uk/ 
          this_cu->unit_type = DW_UT_partial;
          break;
        default:
          abort (); http://www.slipstone.co.uk/ 
        }
    ...
    because reader.comp_unit_die->tag == DW_TAG_type_unit.

    Fix this by adding a DW_TAG_type_unit case.
     http://www.logoarts.co.uk/ 
    Tested on x86_64-linux.

    gdb/ChangeLog:

stepping over thread-lock related codes (in uClibc), the inferior process
gets stuck and never manages to enter the critical section:
http://www.acpirateradio.co.uk/ 

------8<-------
 1 size_t fwrite(const void * __restrict ptr, size_t size,
 2               size_t nmemb, register FILE * __restrict stream)
https://waytowhatsnext.com/ 
 3 {
 4     size_t retval;
 5     __STDIO_AUTO_THREADLOCK_VAR;
 6 
 7 >   __STDIO_AUTO_THREADLOCK(stream);
 8  https://www.webb-dev.co.uk/ 
 9     retval = fwrite_unlocked(ptr, size, nmemb, stream);
10 
11     __STDIO_AUTO_THREADUNLOCK(stream);
12 
13     return retval; http://www.iu-bloomington.com/
14 }
------>8-------

Here, we are at line 7. Using the "next" command leads no where. However,
setting a breakpoint on line 9 and issuing "continue" works.
 https://komiya-dental.com/

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (10 preceding siblings ...)
  2021-09-10 19:39 ` mehmetgelisin at aol dot com
@ 2021-09-22 10:11 ` diheto5497 at secbuf dot com
  2021-09-26 13:31 ` tes.vik1986 at gmail dot com
                   ` (10 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: diheto5497 at secbuf dot com @ 2021-09-22 10:11 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

diheto <diheto5497 at secbuf dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |diheto5497 at secbuf dot com

--- Comment #9 from diheto <diheto5497 at secbuf dot com> ---
this is really nice to read..informative post is very good to read..thanks a
lot!
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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (11 preceding siblings ...)
  2021-09-22 10:11 ` diheto5497 at secbuf dot com
@ 2021-09-26 13:31 ` tes.vik1986 at gmail dot com
  2021-10-09 11:00 ` gulsenenginar at aol dot com
                   ` (9 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: tes.vik1986 at gmail dot com @ 2021-09-26 13:31 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Kylan <tes.vik1986 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tes.vik1986 at gmail dot com

--- Comment #10 from Kylan <tes.vik1986 at gmail dot com> ---
gdb: Do not interrupt atomic sequences for ARC

    When stepping over thread-lock related codes (in uClibc), the inferior
process
    gets stuck and never manages to enter the critical section:
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    ------8<-------
     1 size_t fwrite(const void * __restrict ptr, size_t size,
     2               size_t nmemb, register FILE * __restrict stream)
     3 {
     4     size_t retval;
     5     __STDIO_AUTO_THREADLOCK_VAR;
     6
     7 >   __STDIO_AUTO_THREADLOCK(stream);
     8
     9     retval = fwrite_unlocked(ptr, size, nmemb, stream); 
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    10
    11     __STDIO_AUTO_THREADUNLOCK(stream);
    12
    13     return retval;
    14 }
    ------>8-------

    Here, we are at line 7.  Using the "next" command leads no where.
    However, setting a breakpoint on line 9 and issuing "continue" works.
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    Looking at the assembly instructions reveals that we're dealing with the
    critical section entry code [1] that should never be interrupted, in this
    case by the debugger's implicit breakpoints:

    ------8<-------
      ...
    1 add_s   r0,r13,0x38
    2 mov_s   r3,1
    3 llock   r2,[r0]        <-.
    4 brne.nt r2,0,14     --.  |
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    5 scond   r3,[r0]       |  |
    6 bne     -10         --|--'
    7 brne_s  r2,0,84     <-'
      ...
    ------>8-------

    Lines 3 until 5 (inclusive) are supposed to be executed atomically.
    Therefore, GDB should never (implicitly) insert a breakpoint on lines
    4 and 5, else the program will try to acquire the lock again by jumping
    back to line 3 and gets stuck in an infinite loop.

    The solution is to make GDB aware of these patterns so it inserts
    breakpoints after the sequence -- line 6 in this example. gdb: Do not
interrupt atomic sequences for ARC

    When stepping over thread-lock related codes (in uClibc), the inferior
process
    gets stuck and never manages to enter the critical section:

    ------8<-------
     1 size_t fwrite(const void * __restrict ptr, size_t size,
     2               size_t nmemb, register FILE * __restrict stream)
     3 { http://hail-protection-net.com/
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     4     size_t retval;
     5     __STDIO_AUTO_THREADLOCK_VAR;
     6
     7 >   __STDIO_AUTO_THREADLOCK(stream);
     8
     9     retval = fwrite_unlocked(ptr, size, nmemb, stream);
    10
    11     __STDIO_AUTO_THREADUNLOCK(stream);
    12
    13     return retval;
    14 }
    ------>8-------

    Here, we are at line 7.  Using the "next" command leads no where.
    However, setting a breakpoint on line 9 and issuing "continue" works.
    http://www.compilatori.com/technology/download-videos/
http://www.wearelondonmade.com/travel/renault/
    Looking at the assembly instructions reveals that we're dealing with the
    critical section entry code [1] that should never be interrupted, in this
    case by the debugger's implicit breakpoints:
    http://www.jopspeech.com/category/technology/
    ------8<------- http://joerg.li/travel/kia-rio/
      ...
    1 add_s   r0,r13,0x38
    2 mov_s   r3,1
    3 llock   r2,[r0]        <-. http://connstr.net/technology/nasa-latest/
    4 brne.nt r2,0,14     --.  |
    5 scond   r3,[r0]       |  | http://embermanchester.uk/technology/telegram/
    6 bne     -10         --|--'
    7 brne_s  r2,0,84     <-'
http://www.slipstone.co.uk/technology/cars-interior/
      ...
    ------>8-------
     http://www.logoarts.co.uk/technology/robot-vacuums/
    Lines 3 until 5 (inclusive) are supposed to be executed atomically.
    Therefore, GDB should never (implicitly) insert a breakpoint on lines
http://www.acpirateradio.co.uk/technology/global-warming/
    4 and 5, else the program will try to acquire the lock again by jumping
    back to line 3 and gets stuck in an infinite loop.
https://waytowhatsnext.com/sports/asian-sports/
     https://www.webb-dev.co.uk/sports/gym-during-covid/
    The solution is to make GDB aware of these patterns so it inserts
    breakpoints after the sequence -- line 6 in this example. gdb: Do not
interrupt atomic sequences for ARC
http://www.iu-bloomington.com/sports/honda-civic/

    When stepping over thread-lock related codes (in uClibc), the inferior
process
    gets stuck and never manages to enter the critical section:
http://www-look-4.com/travel/new-cars/ 

    ------8<-------
     1 size_t fwrite(const void * __restrict ptr, size_t size,
https://komiya-dental.com/sports/telegram/
     2               size_t nmemb, register FILE * __restrict stream)
     3 {
     4     size_t retval;

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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (12 preceding siblings ...)
  2021-09-26 13:31 ` tes.vik1986 at gmail dot com
@ 2021-10-09 11:00 ` gulsenenginar at aol dot com
  2021-10-10 16:11 ` oficaj3 at gmail dot com
                   ` (8 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: gulsenenginar at aol dot com @ 2021-10-09 11:00 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Gulsen Engin <gulsenenginar at aol dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gulsenenginar at aol dot com

--- Comment #11 from Gulsen Engin <gulsenenginar at aol dot com> ---
------8<-------
 1 size_t fwrite(const void * __restrict ptr, size_t size,
http://www-look-4.com/category/travel/
 2               size_t nmemb, register FILE * __restrict stream)
 3 {
 4     size_t retval; https://komiya-dental.com/category/technology/
 5     __STDIO_AUTO_THREADLOCK_VAR;
 6  http://www.iu-bloomington.com/category/technology/
 7 >   __STDIO_AUTO_THREADLOCK(stream);
 8 
 9     retval = fwrite_unlocked(ptr, size, nmemb, stream);
10  https://waytowhatsnext.com/category/technology/
11     __STDIO_AUTO_THREADUNLOCK(stream);
12  http://www.wearelondonmade.com/category/travel/
13     return retval;
14 }
------>8-------
 http://www.jopspeech.com/category/travel/
Here, we are at line 7. Using the "next" command leads no where. However,
setting a breakpoint on line 9 and issuing "continue" works.
http://joerg.li/category/travel/
Looking at the assembly instructions reveals that we're dealing with the
critical section entry code [1] that should never be interrupted, in this
case by the debugger's implicit breakpoints:
http://connstr.net/category/travel/

------8<-------
  ... http://embermanchester.uk/category/travel/
1 add_s   r0,r13,0x38
2 mov_s   r3,1
3 llock   r2,[r0]        <-.
4 brne.nt r2,0,14     --.  | http://www.slipstone.co.uk/category/travel/
5 scond   r3,[r0]       |  |
6 bne     -10         --|--'
7 brne_s  r2,0,84     <-' http://www.logoarts.co.uk/category/travel/
  ...
------>8-------
 http://www.acpirateradio.co.uk/category/travel/
Lines 3 until 5 (inclusive) are supposed to be executed atomically. Therefore,
GDB should never (implicitly) insert a breakpoint on lines 4 and 5, else the
http://www.compilatori.com/category/travel/ 
program will try to acquire the lock again by jumping back to line 3 and
gets stuck in an infinite loop. https://www.webb-dev.co.uk/category/technology/

The solution is to make GDB aware of these patterns so it inserts breakpoints
after the sequence -- line 6 in this example.


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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (13 preceding siblings ...)
  2021-10-09 11:00 ` gulsenenginar at aol dot com
@ 2021-10-10 16:11 ` oficaj3 at gmail dot com
  2021-10-19  7:14 ` progonsaytu at gmail dot com
                   ` (7 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: oficaj3 at gmail dot com @ 2021-10-10 16:11 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

oficaj3 at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |oficaj3 at gmail dot com

--- Comment #12 from oficaj3 at gmail dot com ---
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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (14 preceding siblings ...)
  2021-10-10 16:11 ` oficaj3 at gmail dot com
@ 2021-10-19  7:14 ` progonsaytu at gmail dot com
  2021-10-24 10:02 ` glassmtech at ukr dot net
                   ` (6 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: progonsaytu at gmail dot com @ 2021-10-19  7:14 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

progonsaytu <progonsaytu at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |progonsaytu at gmail dot com

--- Comment #13 from progonsaytu <progonsaytu at gmail dot com> ---
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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (15 preceding siblings ...)
  2021-10-19  7:14 ` progonsaytu at gmail dot com
@ 2021-10-24 10:02 ` glassmtech at ukr dot net
  2021-11-06 21:13 ` paneki8601 at dukeoo dot com
                   ` (5 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: glassmtech at ukr dot net @ 2021-10-24 10:02 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

glassmtech <glassmtech at ukr dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |glassmtech at ukr dot net

--- Comment #14 from glassmtech <glassmtech at ukr dot net> ---
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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (16 preceding siblings ...)
  2021-10-24 10:02 ` glassmtech at ukr dot net
@ 2021-11-06 21:13 ` paneki8601 at dukeoo dot com
  2021-11-16 19:08 ` xecana8007 at funboxcn dot com
                   ` (4 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: paneki8601 at dukeoo dot com @ 2021-11-06 21:13 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

paneki <paneki8601 at dukeoo dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |paneki8601 at dukeoo dot com

--- Comment #15 from paneki <paneki8601 at dukeoo dot com> ---
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* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (17 preceding siblings ...)
  2021-11-06 21:13 ` paneki8601 at dukeoo dot com
@ 2021-11-16 19:08 ` xecana8007 at funboxcn dot com
  2021-11-16 19:12 ` xecana8007 at funboxcn dot com
                   ` (3 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: xecana8007 at funboxcn dot com @ 2021-11-16 19:08 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

tesaso8237 at funboxcn dot comxecana8007@funboxcn.com <xecana8007 at funboxcn dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |xecana8007 at funboxcn dot com

--- Comment #16 from tesaso8237 at funboxcn dot comxecana8007@funboxcn.com <xecana8007 at funboxcn dot com> ---
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^ permalink raw reply	[flat|nested] 24+ messages in thread

* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (18 preceding siblings ...)
  2021-11-16 19:08 ` xecana8007 at funboxcn dot com
@ 2021-11-16 19:12 ` xecana8007 at funboxcn dot com
  2021-11-16 19:15 ` xecana8007 at funboxcn dot com
                   ` (2 subsequent siblings)
  22 siblings, 0 replies; 24+ messages in thread
From: xecana8007 at funboxcn dot com @ 2021-11-16 19:12 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

--- Comment #17 from tesaso8237 at funboxcn dot comxecana8007@funboxcn.com <xecana8007 at funboxcn dot com> ---
I think this is a really good article.  You make this information interesting
and engaging.  You give readers a lot to think about and I appreciate that kind
of writing.
https://rohrreinigung-freitag.de/

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^ permalink raw reply	[flat|nested] 24+ messages in thread

* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (19 preceding siblings ...)
  2021-11-16 19:12 ` xecana8007 at funboxcn dot com
@ 2021-11-16 19:15 ` xecana8007 at funboxcn dot com
  2021-11-17 11:07 ` luis.machado at linaro dot org
  2021-11-22  7:39 ` gexed96894 at keagenan dot com
  22 siblings, 0 replies; 24+ messages in thread
From: xecana8007 at funboxcn dot com @ 2021-11-16 19:15 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

--- Comment #18 from tesaso8237 at funboxcn dot comxecana8007@funboxcn.com <xecana8007 at funboxcn dot com> ---
Hello There. I found your blog using msn. This is an extremely well written
article. I will be sure to bookmark it and return to read more of your useful
information. Thanks for the post. I’ll certainly comeback.
https://wr-umzuege.de/

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^ permalink raw reply	[flat|nested] 24+ messages in thread

* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (20 preceding siblings ...)
  2021-11-16 19:15 ` xecana8007 at funboxcn dot com
@ 2021-11-17 11:07 ` luis.machado at linaro dot org
  2021-11-22  7:39 ` gexed96894 at keagenan dot com
  22 siblings, 0 replies; 24+ messages in thread
From: luis.machado at linaro dot org @ 2021-11-17 11:07 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

Luis Machado <luis.machado at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|luis.machado at linaro dot org     |

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^ permalink raw reply	[flat|nested] 24+ messages in thread

* [Bug tdep/27369] ARC: Stepping over atomic instruction sequences loops infinitely
  2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
                   ` (21 preceding siblings ...)
  2021-11-17 11:07 ` luis.machado at linaro dot org
@ 2021-11-22  7:39 ` gexed96894 at keagenan dot com
  22 siblings, 0 replies; 24+ messages in thread
From: gexed96894 at keagenan dot com @ 2021-11-22  7:39 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=27369

gexed96894 <gexed96894 at keagenan dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gexed96894 at keagenan dot com

--- Comment #19 from gexed96894 <gexed96894 at keagenan dot com> ---
Hello There. I found your blog using msn. This is an extremely well written
article. I will be sure to bookmark it and return to read more of your useful
information. Thanks for the post. I’ll certainly comeback.
buy IPO stocks  https://crosswork.us/

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^ permalink raw reply	[flat|nested] 24+ messages in thread

end of thread, other threads:[~2021-11-22  7:39 UTC | newest]

Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-08 11:32 [Bug tdep/27369] New: ARC: Stepping over atomic instruction sequences loops infinitely shahab.vahedi at gmail dot com
2021-02-08 11:53 ` [Bug tdep/27369] " shahab.vahedi at gmail dot com
2021-02-08 12:03 ` cvs-commit at gcc dot gnu.org
2021-02-08 12:07 ` luis.machado at linaro dot org
2021-02-08 12:12 ` cvs-commit at gcc dot gnu.org
2021-02-08 12:32 ` shahab.vahedi at gmail dot com
2021-06-27 18:00 ` ahmedsayeed1982 at yahoo dot com
2021-08-19  6:01 ` ucelsanicin at yahoo dot com
2021-09-02 11:06 ` donipah907 at mtlcz dot com
2021-09-02 11:13 ` mark at klomp dot org
2021-09-06  9:09 ` focixujo at livinginsurance dot co.uk
2021-09-10 19:39 ` mehmetgelisin at aol dot com
2021-09-22 10:11 ` diheto5497 at secbuf dot com
2021-09-26 13:31 ` tes.vik1986 at gmail dot com
2021-10-09 11:00 ` gulsenenginar at aol dot com
2021-10-10 16:11 ` oficaj3 at gmail dot com
2021-10-19  7:14 ` progonsaytu at gmail dot com
2021-10-24 10:02 ` glassmtech at ukr dot net
2021-11-06 21:13 ` paneki8601 at dukeoo dot com
2021-11-16 19:08 ` xecana8007 at funboxcn dot com
2021-11-16 19:12 ` xecana8007 at funboxcn dot com
2021-11-16 19:15 ` xecana8007 at funboxcn dot com
2021-11-17 11:07 ` luis.machado at linaro dot org
2021-11-22  7:39 ` gexed96894 at keagenan dot com

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