linux-kernel - [PATCH 17/54] KVM: x86 emulator: unify two switches

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Message-Id: <1199201780-14001-18-git-send-email-avi@qumranet.com>
Date:	Tue,  1 Jan 2008 17:35:43 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	linux-kernel@...r.kernel.org, kvm-devel@...ts.sourceforge.net
Subject: [PATCH 17/54] KVM: x86 emulator: unify two switches

The rep prefix cleanup left two switch () statements next to each other.
Unify them.

Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 drivers/kvm/x86_emulate.c |   50 ++++++++++++++++++++------------------------
 1 files changed, 23 insertions(+), 27 deletions(-)

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 53377f0..499d1ad 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -1541,31 +1541,6 @@ special_insn:
 	case 0x9d: /* popf */
 		c->dst.ptr = (unsigned long *) &ctxt->eflags;
 		goto pop_instruction;
-	case 0xc3: /* ret */
-		c->dst.ptr = &c->eip;
-		goto pop_instruction;
-	case 0xf4:              /* hlt */
-		ctxt->vcpu->halt_request = 1;
-		goto done;
-	case 0xf5:	/* cmc */
-		/* complement carry flag from eflags reg */
-		ctxt->eflags ^= EFLG_CF;
-		c->dst.type = OP_NONE;	/* Disable writeback. */
-		break;
-	case 0xf8: /* clc */
-		ctxt->eflags &= ~EFLG_CF;
-		c->dst.type = OP_NONE;	/* Disable writeback. */
-		break;
-	case 0xfa: /* cli */
-		ctxt->eflags &= ~X86_EFLAGS_IF;
-		c->dst.type = OP_NONE;	/* Disable writeback. */
-		break;
-	case 0xfb: /* sti */
-		ctxt->eflags |= X86_EFLAGS_IF;
-		c->dst.type = OP_NONE;	/* Disable writeback. */
-		break;
-	}
-	switch (c->b) {
 	case 0xa4 ... 0xa5:	/* movs */
 		c->dst.type = OP_MEM;
 		c->dst.bytes = (c->d & ByteOp) ? 1 : c->op_bytes;
@@ -1652,6 +1627,9 @@ special_insn:
 	case 0xae ... 0xaf:	/* scas */
 		DPRINTF("Urk! I don't handle SCAS.\n");
 		goto cannot_emulate;
+	case 0xc3: /* ret */
+		c->dst.ptr = &c->eip;
+		goto pop_instruction;
 	case 0xe8: /* call (near) */ {
 		long int rel;
 		switch (c->op_bytes) {
@@ -1676,8 +1654,26 @@ special_insn:
 		JMP_REL(c->src.val);
 		c->dst.type = OP_NONE; /* Disable writeback. */
 		break;
-
-
+	case 0xf4:              /* hlt */
+		ctxt->vcpu->halt_request = 1;
+		goto done;
+	case 0xf5:	/* cmc */
+		/* complement carry flag from eflags reg */
+		ctxt->eflags ^= EFLG_CF;
+		c->dst.type = OP_NONE;	/* Disable writeback. */
+		break;
+	case 0xf8: /* clc */
+		ctxt->eflags &= ~EFLG_CF;
+		c->dst.type = OP_NONE;	/* Disable writeback. */
+		break;
+	case 0xfa: /* cli */
+		ctxt->eflags &= ~X86_EFLAGS_IF;
+		c->dst.type = OP_NONE;	/* Disable writeback. */
+		break;
+	case 0xfb: /* sti */
+		ctxt->eflags |= X86_EFLAGS_IF;
+		c->dst.type = OP_NONE;	/* Disable writeback. */
+		break;
 	}
 	goto writeback;
 
-- 
1.5.3.7

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