From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <nagmat@gmail.com>
Received: from mail-ej1-x636.google.com (mail-ej1-x636.google.com
 [IPv6:2a00:1450:4864:20::636])
 by sourceware.org (Postfix) with ESMTPS id E6C99396D836
 for <gdb@sourceware.org>; Thu,  7 Jan 2021 07:41:07 +0000 (GMT)
DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org E6C99396D836
Received: by mail-ej1-x636.google.com with SMTP id qw4so8332013ejb.12
 for <gdb@sourceware.org>; Wed, 06 Jan 2021 23:41:07 -0800 (PST)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:from:date:message-id:subject:to;
 bh=N2Uzmlz1ZCGuKsfH3QOpoopPhnXw5vezLUNIH99GU3c=;
 b=P5fU+lES2/VqQUfMlg/Uug8pC8UjhfJtEr7Je8G3vEFdkicWjw5T5ribjujmn4WZr9
 VvhQnWXdwQ8YYWHhpGUrtwyhyiyPBaU1Lmo42kTzb3kwyRnQvcmg6DSl78c+TWnde5If
 TtZ3MGaJjEvfGqxQvvZz78cn3BEPHAo16K24so4SvjjuROGvH2ssAAs/zfgNjGIFANX7
 w55p63ulQ6geYScO8raowRgnYiIR5vLPjDS2lNHnKNAAYnTBdBKzjD4kg7KfYIMR4cfo
 qyx7DslxPGPwWaw875oRa6OHMI2KvUoTp0C/mU2XZlq2Lq3s/z1gJc66zZ8x7vOuyvNj
 /bfg==
X-Gm-Message-State: AOAM531qEFatdzunpnjLoQSWZeIgiVZ3lPQQFdtqg4YIP+jE7oBzo0uQ
 6bcD74iKX2pGmcWqN7Jel7j3Jsiv3ubzi7Gl2TXETbBiMni3RA==
X-Google-Smtp-Source: ABdhPJxHOr/ggxc+fixkolItvd7mKGxk94HYST6YLeVVBAf65is15Z/WRinIp/yz39H+3MKl7wdVBlhJY6BpSCtl7v8=
X-Received: by 2002:a17:906:ec9:: with SMTP id
 u9mr5588336eji.400.1610005266516; 
 Wed, 06 Jan 2021 23:41:06 -0800 (PST)
MIME-Version: 1.0
From: Nagmat Nazarov <nagmat@gmail.com>
Date: Thu, 7 Jan 2021 16:40:54 +0900
Message-ID: <CAJnvuZ80vuCArk1AXOde1JBz2iQ538X5Jb=72w4sLykbx90T+A@mail.gmail.com>
Subject: Need real life synthetic use cases for debugging
To: Reuben Thomas via Gdb <gdb@sourceware.org>
X-Spam-Status: No, score=-0.4 required=5.0 tests=BAYES_00, DKIM_SIGNED,
 DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, HTML_MESSAGE,
 RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP,
 T_KAM_HTML_FONT_INVALID autolearn=ham autolearn_force=no version=3.4.2
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on
 server2.sourceware.org
Content-Type: text/plain; charset="UTF-8"
X-Content-Filtered-By: Mailman/MimeDel 2.1.29
X-BeenThere: gdb@sourceware.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gdb mailing list <gdb.sourceware.org>
List-Unsubscribe: <https://sourceware.org/mailman/options/gdb>,
 <mailto:gdb-request@sourceware.org?subject=unsubscribe>
List-Archive: <https://sourceware.org/pipermail/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-request@sourceware.org?subject=help>
List-Subscribe: <https://sourceware.org/mailman/listinfo/gdb>,
 <mailto:gdb-request@sourceware.org?subject=subscribe>
X-List-Received-Date: Thu, 07 Jan 2021 07:41:09 -0000

We have *implemented PrC(program context) register* which adds program
counter value of instruction where we have* jump (JAL or JALR) instruction* on
RISC-V architecture. By using *PrC* we can* set breakpoints on exact order
of function calls*. We example below you can see PrC values of function
call graph where f1,f2 and f3 are functions:

PATH

PrC

f1

9c6

f1->f2

1246

f1->f2->f3

19be

f1->f3

12ac

f1->f3->f2

18c0

f2

a04

f2->f1

111c

f2->f1->f3

1a02

f2->f3

117c

f2->f3->f1

1742

f3

a42

f3->f1

1008

f3->f1->f2

1888

f3->f2

1056

f3->f2->f1

176e

As you see all PrC values are different from each other. By using PrC I can
set breakpoints on consecutive chain of function calls. Now I need real
life synthetic cases where I can use this method. Any help is appreciated.

Kind regards,
Nagmat
nagmat@gmail.com