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KVM: x86 emulator: add a new "implied 1" Src decode type 

Add SrcOne operand type when we need to decode an implied '1' like with
regular shift instruction

Signed-off-by: Guillaume Thouvenin <guillaume.thouvenin@ext.bull.net>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Guillaume Thouvenin 2008-12-04 14:27:38 +01:00 committed by Avi Kivity
parent 0dc8d10f7d
commit bfcadf83ec
1 changed files with 5 additions and 0 deletions
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5
arch/x86/kvm/x86_emulate.c
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@ -58,6 +58,7 @@
#define SrcMem32 (4<<4) /* Memory operand (32-bit). */ #define SrcMem32 (4<<4) /* Memory operand (32-bit). */
#define SrcImm (5<<4) /* Immediate operand. */ #define SrcImm (5<<4) /* Immediate operand. */
#define SrcImmByte (6<<4) /* 8-bit sign-extended immediate operand. */ #define SrcImmByte (6<<4) /* 8-bit sign-extended immediate operand. */
#define SrcOne (7<<4) /* Implied '1' */
#define SrcMask (7<<4) #define SrcMask (7<<4)
/* Generic ModRM decode. */ /* Generic ModRM decode. */
#define ModRM (1<<7) #define ModRM (1<<7)
@ -1004,6 +1005,10 @@ done_prefixes:
c->src.bytes = 1; c->src.bytes = 1;
c->src.val = insn_fetch(s8, 1, c->eip); c->src.val = insn_fetch(s8, 1, c->eip);
break; break;
case SrcOne:
c->src.bytes = 1;
c->src.val = 1;
break;
} }
/* /*