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From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org
Subject: [PATCH v3 0/8] Simplify byte/word opcode pair decode
Date: Thu, 26 Aug 2010 11:56:05 +0300	[thread overview]
Message-ID: <1282812973-20093-1-git-send-email-avi@redhat.com> (raw)

Many x86 instructions come in pairs - byte and word variants where bit 0
of the opcode determines operand size.  Use this to simplify the decode
tables.

Rebased, plus:

Avi Kivity (8):
  KVM: x86 emulator: support byte/word opcode pairs
  KVM: x86 emulator: simplify ALU block (opcodes 00-3F) decode flags
    - v2: fix opcode 25 (AND r/m, imm) to accept a full immediate, not 8-bit
  KVM: x86 emulator: simplify string instruction decode flags
  KVM: x86 emulator: simplify instruction decode flags for opcodes
    80-8F
  KVM: x86 emulator: simplify instruction decode flags for opcodes
    A0-AF
  KVM: x86 emulator: simplify instruction decode flags for opcodes
    C0-DF
    - v3: fix opcode C1 to accept an 8-bit immediate, not full
  KVM: x86 emulator: simplify instruction decode flags for opcodes
    E0-FF
  KVM: x86 emulator: simplify instruction decode flags for opcodes 0F
    00-FF

 arch/x86/kvm/emulate.c |   89 ++++++++++++++++++++++--------------------------
 1 files changed, 41 insertions(+), 48 deletions(-)


             reply	other threads:[~2010-08-26  8:56 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-26  8:56 Avi Kivity [this message]
2010-08-26  8:56 ` [PATCH v3 1/8] KVM: x86 emulator: support byte/word opcode pairs Avi Kivity
2010-08-26  8:56 ` [PATCH v3 2/8] KVM: x86 emulator: simplify ALU block (opcodes 00-3F) decode flags Avi Kivity
2010-08-26  8:56 ` [PATCH v3 3/8] KVM: x86 emulator: simplify string instruction " Avi Kivity
2010-08-26  8:56 ` [PATCH v3 4/8] KVM: x86 emulator: simplify instruction decode flags for opcodes 80-8F Avi Kivity
2010-08-26  8:56 ` [PATCH v3 5/8] KVM: x86 emulator: simplify instruction decode flags for opcodes A0-AF Avi Kivity
2010-08-26  8:56 ` [PATCH v3 6/8] KVM: x86 emulator: simplify instruction decode flags for opcodes C0-DF Avi Kivity
2010-08-26  8:56 ` [PATCH v3 7/8] KVM: x86 emulator: simplify instruction decode flags for opcodes E0-FF Avi Kivity
2010-08-26  8:56 ` [PATCH v3 8/8] KVM: x86 emulator: simplify instruction decode flags for opcodes 0F 00-FF Avi Kivity
2010-08-26 18:12 ` [PATCH v3 0/8] Simplify byte/word opcode pair decode Marcelo Tosatti

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