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[Bug uprobes/10324] x86-64 uprobes gives up on 0xf0 prefix (lock)
- From: "srikar at linux dot vnet dot ibm dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 24 Jun 2009 14:56:51 -0000
- Subject: [Bug uprobes/10324] x86-64 uprobes gives up on 0xf0 prefix (lock)
- References: <20090624105323.10324.fche@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From srikar at linux dot vnet dot ibm dot com 2009-06-24 14:56 -------
>From runtime/uprobes2/uprobes_x86.c 0xf0(lock prefix is documented as not
supported)
---------------------------------------------------------------------
* others -- Do we need to support these?
* 0f - (floating-point?) prefetch instructions
* 07, 17, 1f - pop es, pop ss, pop ds
* 26, 2e, 36, 3e - es:, cs:, ss:, ds: segment prefixes --
* but 64 and 65 (fs: and gs:) seem to be used, so we support them
* 67 - addr16 prefix
* ce - into
* f0 - lock prefix
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http://sourceware.org/bugzilla/show_bug.cgi?id=10324
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