Re: [PATCH] Modify altivec-regs.exp testcase for AIX

[Ulrich Weigand <Ulrich.Weigand@de.ibm.com>]

Hi Aditya,

the string "func2 breakpoint here, first time" is just a comment that will be used to identify this particular command in the output; e.g. if continuing to the breakpoint fails, this comment will be used in the "FAIL" error message (so you know where specifically the test execution fails).

Apart from that, this string doesn't have any meaning in particular, it could be anything. I guess the author of the test case added the "first time" text here because in the process of running this particular test, we'll get back to that same place multiple times.


Mit freundlichen Gruessen / Best Regards

Ulrich Weigand

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-----Original Message-----
From: Aditya Kamath1 <Aditya.Kamath1@ibm.com<mailto:Aditya%20Kamath1%20%3cAditya.Kamath1@ibm.com%3e>>
To: Ulrich Weigand <Ulrich.Weigand@de.ibm.com<mailto:Ulrich%20Weigand%20%3cUlrich.Weigand@de.ibm.com%3e>>, gdb-patches@sourceware.org <gdb-patches@sourceware.org<mailto:%22gdb-patches@sourceware.org%22%20%3cgdb-patches@sourceware.org%3e>>, simark@simark.ca <simark@simark.ca<mailto:%22simark@simark.ca%22%20%3csimark@simark.ca%3e>>
Cc: Sangamesh Mallayya <sangamesh.swamy@in.ibm.com<mailto:Sangamesh%20Mallayya%20%3csangamesh.swamy@in.ibm.com%3e>>
Subject: Re: [PATCH] Modify altivec-regs.exp testcase for AIX
Date: Mon, 17 Oct 2022 06:51:17 +0000

Hi Ulrich,

Thank you for the reply. This was useful. While I was exploring other stuff related to this test case,

In the line gdb_continue_to_breakpoint "func2 breakpoint here, first time",


What does "first time" in the command gdb_continue_to_breakpoint here mean?? I can see a marker with name func2 breakpoint.. Does it mean continue to execute till that marker hits for the first time??

I am curious to know it. It will be helpful. Kindly let me know.

Have a nice day ahead.

Thanks and regards,
Aditya.
________________________________
From: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>
Sent: 14 October 2022 18:17
To: gdb-patches@sourceware.org <gdb-patches@sourceware.org>; Aditya Kamath1 <Aditya.Kamath1@ibm.com>; simark@simark.ca <simark@simark.ca>
Cc: Sangamesh Mallayya <sangamesh.swamy@in.ibm.com>
Subject: Re: [PATCH] Modify altivec-regs.exp testcase for AIX

Aditya Kamath1 <Aditya.Kamath1@ibm.com> wrote:

>Please find attached the patch. [See:- 0001-Modify-altivec-regs.exp-
>testcase-for-AIX.patch]

>+if {[istarget "powerpc*-*-aix*"]} then {
>+  gdb_test "next"
>+  gdb_test "next"
>+}

Hard-coding the fact that there need to be exactly
two "next" iterations is not really a good idea.

Usually this is done by placing a marker comment
in the source code at the target location, and
then using something like:

        gdb_breakpoint [gdb_get_line_number "func2 breakpoint here"]
        gdb_continue_to_breakpoint "func2 breakpoint here, first time"

(example from gdb.base/watchpoint.exp).

Bye,
Ulrich