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From: "ahmedsayeed1982 at yahoo dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/27009] [s390] GDB branches randomly for BC instruction while displaced stepping
Date: Sun, 27 Jun 2021 17:59:57 +0000	[thread overview]
Message-ID: <bug-27009-4717-sWyJ9pFt9t@http.sourceware.org/bugzilla/> (raw)
In-Reply-To: <bug-27009-4717@http.sourceware.org/bugzilla/>

https://sourceware.org/bugzilla/show_bug.cgi?id=27009

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> ---
        .align  8
        .globl main
        .globl insn
        .type  main, @function
        .type  insn, @function
        # This should return 0 on success.
main:
        basr    %r1, %r0
insn:   bc      15, win-insn(0,%r1)
        lghi    %r2,1
win:    lghi    %r2,0
        br      %r14

Assemble and link the above.

Turn on displaced stepping, set a breakpoint on `insn`, run, then try to step
over the breakpoint with stepi.
(gdb) set displaced-stepping on
(gdb) b insn
(gdb) r
(gdb) stepi
http://ooviv.xyz/

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  parent reply	other threads:[~2021-06-27 17:59 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-03 23:07 [Bug breakpoints/27009] New: " gfrix98 at gmail dot com
2020-12-03 23:09 ` [Bug breakpoints/27009] " gfrix98 at gmail dot com
2020-12-06 10:28 ` cvs-commit at gcc dot gnu.org
2020-12-06 10:29 ` brobecker at gnat dot com
2020-12-06 10:31 ` cvs-commit at gcc dot gnu.org
2021-01-31  6:26 ` brobecker at gnat dot com
2021-06-27 17:59 ` ahmedsayeed1982 at yahoo dot com [this message]
2021-08-10 12:45 ` ucelsanicin at yahoo dot com
2021-09-02 11:06 ` donipah907 at mtlcz dot com
2021-09-02 11:15 ` mark at klomp dot org
2021-09-06  9:09 ` focixujo at livinginsurance dot co.uk
2021-09-10 19:38 ` 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
2021-10-17 19:51 ` vmireskazki at gmail dot com
2021-10-19  7:15 ` 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
2021-11-22  7:39 ` gexed96894 at keagenan dot com

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