From b1ea50b2b63a95aa5a7944b48ba4d0e9b32211d3 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Tue, 13 Sep 2011 10:45:42 +0300 Subject: [PATCH] KVM: x86 emulator: expand decode flags to 64 bits Unifiying the operands means not taking advantage of the fact that some operand types can only go into certain operands (for example, DI can only be used by the destination), so we need more bits to hold the operand type. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- arch/x86/include/asm/kvm_emulate.h | 2 +- arch/x86/kvm/emulate.c | 38 +++++++++++++++--------------- 2 files changed, 20 insertions(+), 20 deletions(-) diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 56bac3e3423e..a026507893e9 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -262,7 +262,7 @@ struct x86_emulate_ctxt { struct operand dst; bool has_seg_override; u8 seg_override; - unsigned int d; + u64 d; int (*execute)(struct x86_emulate_ctxt *ctxt); int (*check_perm)(struct x86_emulate_ctxt *ctxt); /* modrm */ diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 6a6aed9a29df..8c65ff274785 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -31,18 +31,18 @@ /* * Operand types */ -#define OpNone 0 -#define OpImplicit 1 /* No generic decode */ -#define OpReg 2 /* Register */ -#define OpMem 3 /* Memory */ -#define OpAcc 4 /* Accumulator: AL/AX/EAX/RAX */ -#define OpDI 5 /* ES:DI/EDI/RDI */ -#define OpMem64 6 /* Memory, 64-bit */ -#define OpImmUByte 7 /* Zero-extended 8-bit immediate */ -#define OpDX 8 /* DX register */ +#define OpNone 0ull +#define OpImplicit 1ull /* No generic decode */ +#define OpReg 2ull /* Register */ +#define OpMem 3ull /* Memory */ +#define OpAcc 4ull /* Accumulator: AL/AX/EAX/RAX */ +#define OpDI 5ull /* ES:DI/EDI/RDI */ +#define OpMem64 6ull /* Memory, 64-bit */ +#define OpImmUByte 7ull /* Zero-extended 8-bit immediate */ +#define OpDX 8ull /* DX register */ #define OpBits 4 /* Width of operand field */ -#define OpMask ((1 << OpBits) - 1) +#define OpMask ((1ull << OpBits) - 1) /* * Opcode effective-address decode tables. @@ -108,12 +108,12 @@ #define Priv (1<<27) /* instruction generates #GP if current CPL != 0 */ #define No64 (1<<28) /* Source 2 operand type */ -#define Src2None (0<<29) -#define Src2CL (1<<29) -#define Src2ImmByte (2<<29) -#define Src2One (3<<29) -#define Src2Imm (4<<29) -#define Src2Mask (7<<29) +#define Src2None (0u<<29) +#define Src2CL (1u<<29) +#define Src2ImmByte (2u<<29) +#define Src2One (3u<<29) +#define Src2Imm (4u<<29) +#define Src2Mask (7u<<29) #define X2(x...) x, x #define X3(x...) X2(x), x @@ -125,8 +125,8 @@ #define X16(x...) X8(x), X8(x) struct opcode { - u32 flags; - u8 intercept; + u64 flags : 56; + u64 intercept : 8; union { int (*execute)(struct x86_emulate_ctxt *ctxt); struct opcode *group; @@ -3530,7 +3530,7 @@ done_prefixes: return EMULATION_FAILED; } - ctxt->d &= ~GroupMask; + ctxt->d &= ~(u64)GroupMask; ctxt->d |= opcode.flags; } -- 2.39.5