From: "Marcin Kościelnicki" <koriakin@0x04.net>
To: Yao Qi <qiyaoltc@gmail.com>
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH 2/2] gdb/testsuite/gdb.trace: Deduplicate set_point assembly.
Date: Wed, 11 Nov 2015 12:42:00 -0000 [thread overview]
Message-ID: <564337A6.6090808@0x04.net> (raw)
In-Reply-To: <86pozhvseg.fsf@gmail.com>
On 11/11/15 09:42, Yao Qi wrote:
> Marcin KoÅcielnicki <koriakin@0x04.net> writes:
>
>> +/* TRACEPOINT_ASM expands to an assembly instruction large enough to fit
>> + a fast tracepoint jump. The parameter is the label where we'll set
>> + tracepoints and breakpoints. */
>> +
>> +#if (defined __x86_64__ || defined __i386__)
>> +
>> +static void
>> +x86_trace_dummy ()
>> +{
>> + int x = 0;
>> + int y = x + 4;
>> +}
>> +
>> +#define TRACEPOINT_ASM(name) \
>> + asm (" .global " SYMBOL(name) "\n" \
>> + SYMBOL(name) ":\n" \
>> + " call " SYMBOL(x86_trace_dummy) "\n" \
>> + )
>> +
>> +#elif (defined __aarch64__)
>> +
>> +#define TRACEPOINT_ASM(name) \
>> + asm (" .global " SYMBOL(name) "\n" \
>> + SYMBOL(name) ":\n" \
>> + " nop\n" \
>> + )
>> +
>> +#else
>
> TRACEPOINT_ASM isn't a good name to me. How about
> FAST_TRACEPOINT_LABEL?
>
> Otherwise the patch looks good to me.
>
Yeah, that sounds better, will push with FAST_TRACEPOINT_LABEL.
Thanks!
next prev parent reply other threads:[~2015-11-11 12:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-10 11:21 [PATCH 1/2] gdb/testsuite/gdb.trace: Deduplicate pcreg/spreg/fpreg Marcin Kościelnicki
2015-11-10 11:21 ` [PATCH 2/2] gdb/testsuite/gdb.trace: Deduplicate set_point assembly Marcin Kościelnicki
2015-11-11 8:42 ` Yao Qi
2015-11-11 12:42 ` Marcin Kościelnicki [this message]
2015-11-10 11:35 ` [PATCH v2 1/2] gdb/testsuite/gdb.trace: Deduplicate pcreg/spreg/fpreg Marcin Kościelnicki
2015-11-10 17:55 ` Yao Qi
2015-11-10 19:08 ` Marcin Kościelnicki
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