From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Cc: Aurelien Jarno <aurelien@aurel32.net>
Subject: [Qemu-devel] [PATCH 0/5] tcg/i386: use movbe instruction in qemu_ldst routines
Date: Sat, 21 Dec 2013 17:43:39 +0100 [thread overview]
Message-ID: <1387644224-2404-1-git-send-email-aurelien@aurel32.net> (raw)
This patchset enable the usage of the movbe instruction, available on
Intel Atom and Intel Haswell CPU, in qemu_ldst routines, avoiding bswap
instructions before or after the store or loads. The availability of
this instruction is done at runtime using the cpuid instruction.
The last patch of the series is not fully related, but I spotted the
issue when working on this patchset, so I thought it's a good idea to
fix it.
Aurelien Jarno (5):
disas/i386.c: disassemble movbe instruction
tcg/i386: remove hardcoded P_REXW value
tcg/i386: add support for three-byte opcodes
tcg/i386: use movbe instruction in qemu_ldst routines
tcg/i386: cleanup useless #ifdef
disas/i386.c | 8 +--
tcg/i386/tcg-target.c | 178 ++++++++++++++++++++++++++++++++++---------------
2 files changed, 128 insertions(+), 58 deletions(-)
--
1.7.10.4
next reply other threads:[~2013-12-21 16:44 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-21 16:43 Aurelien Jarno [this message]
2013-12-21 16:43 ` [Qemu-devel] [PATCH 1/5] disas/i386.c: disassemble movbe instruction Aurelien Jarno
2013-12-22 16:43 ` Richard Henderson
2013-12-21 16:43 ` [Qemu-devel] [PATCH 2/5] tcg/i386: remove hardcoded P_REXW value Aurelien Jarno
2013-12-22 16:43 ` Richard Henderson
2013-12-21 16:43 ` [Qemu-devel] [PATCH 3/5] tcg/i386: add support for three-byte opcodes Aurelien Jarno
2013-12-22 16:46 ` Richard Henderson
2013-12-21 16:43 ` [Qemu-devel] [PATCH 4/5] tcg/i386: use movbe instruction in qemu_ldst routines Aurelien Jarno
2013-12-22 16:52 ` Richard Henderson
2013-12-21 16:43 ` [Qemu-devel] [PATCH 5/5] tcg/i386: cleanup useless #ifdef Aurelien Jarno
2013-12-22 16:44 ` Richard Henderson
2013-12-22 11:24 ` [Qemu-devel] [PATCH 0/5] tcg/i386: use movbe instruction in qemu_ldst routines Aurelien Jarno
2013-12-22 11:47 ` Aurelien Jarno
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