From: Antoine Tremblay <antoine.tremblay@ericsson.com>
To: Pedro Alves <palves@redhat.com>, <gdb-patches@sourceware.org>
Subject: Re: [PATCH v3 2/5] Support breakpoint kinds for software breakpoints in GDBServer.
Date: Wed, 21 Oct 2015 14:41:00 -0000 [thread overview]
Message-ID: <56278F23.8080200@ericsson.com> (raw)
In-Reply-To: <56278D4A.4010102@redhat.com>
On 10/21/2015 09:04 AM, Pedro Alves wrote:
> On 10/21/2015 01:03 PM, Antoine Tremblay wrote:
>>
>>
>>> This comment should be expanded. Something like:
>>>
>>> /* The software breakpoint's kind. This is target specific.
>>> Most architectures only use one specific instruction for software
>>> breakpoints, while others may use more than one. E.g., on ARM, we
>>> need to set different breakpoint instructions on Thumb, Thumb-2,
>>> and ARM code. */
>>> int kind;
>>>
>>
>> I will remove the "software" specification since hardware breakpoints
>> have kinds too encoded in this struct see for example :
>> arm_linux_hw_point_initialize.
>>
>> Like so :
>>
>> /* The breakpoint's kind. This is target specific. Most
>> architectures only use one specific instruction for breakpoints, while
>> others may use more than one. E.g., on ARM, we need to set different
>> breakpoint instructions on Thumb, Thumb-2, and ARM code. */
>>
>
> Ah. Hmm, but if we only remove the "software" word and continue only talking
> about "instructions", then I think it ends up the same. How about extending
> it like this:
>
> /* The breakpoint's kind. This is target specific. Most
> architectures only use one specific instruction for breakpoints, while
> others may use more than one. E.g., on ARM, we need to use different
> breakpoint instructions on Thumb, Thumb-2, and ARM code. Likewise for
> hardware breakpoints -- some architectures (including ARM) need to
> setup debug registers differently depending on mode. */
>
Sounds good to me.
next prev parent reply other threads:[~2015-10-21 13:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-20 16:48 [PATCH v3 0/5] Software breakpoints support for ARM linux " Antoine Tremblay
2015-10-20 16:48 ` [PATCH v3 5/5] Support software breakpoints " Antoine Tremblay
2015-10-21 13:12 ` Pedro Alves
2015-10-20 16:48 ` [PATCH v3 1/5] Add the target_ops needed for software breakpoints " Antoine Tremblay
2015-10-21 11:22 ` Pedro Alves
2015-10-20 16:49 ` [PATCH v3 2/5] Support breakpoint kinds " Antoine Tremblay
2015-10-21 11:49 ` Pedro Alves
2015-10-21 14:19 ` Antoine Tremblay
2015-10-21 14:23 ` Pedro Alves
2015-10-21 14:41 ` Antoine Tremblay [this message]
2015-10-22 15:17 ` Ulrich Weigand
2015-10-22 15:54 ` Antoine Tremblay
2015-10-20 16:49 ` [PATCH v3 4/5] Refactor the breakpoint definitions in linux-arm-low.c Antoine Tremblay
2015-10-21 13:04 ` Pedro Alves
2015-10-20 16:55 ` [PATCH v3 3/5] Implement breakpoint_kind_from_pc and sw_breakpoint_from_kind for ARM in GDBServer Antoine Tremblay
2015-10-21 12:04 ` Pedro Alves
2015-10-21 13:34 ` [PATCH v3 0/5] Software breakpoints support for ARM linux " Pedro Alves
2015-10-21 18:44 ` Yao Qi
2015-10-21 19:31 ` Antoine Tremblay
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