# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1196085285 0
# Node ID dc3a566f9e44153b2b9b9171948a76acdd9f4af4
# Parent bb961bda7eff2bec637a23990caa9cf1bdaf596a
x86_emulate: Emulate LDS/LES/LFS/LGS/LSS.
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
xen/arch/x86/x86_emulate.c | 38 +++++++++++++++++++++++++++++++++++---
1 files changed, 35 insertions(+), 3 deletions(-)
diff -r bb961bda7eff -r dc3a566f9e44 xen/arch/x86/x86_emulate.c
--- a/xen/arch/x86/x86_emulate.c Sun Nov 25 21:24:48 2007 +0000
+++ b/xen/arch/x86/x86_emulate.c Mon Nov 26 13:54:45 2007 +0000
@@ -149,7 +149,8 @@ static uint8_t opcode_table[256] = {
/* 0xC0 - 0xC7 */
ByteOp|DstMem|SrcImm|ModRM, DstMem|SrcImmByte|ModRM,
ImplicitOps, ImplicitOps,
- 0, 0, ByteOp|DstMem|SrcImm|ModRM|Mov, DstMem|SrcImm|ModRM|Mov,
+ DstReg|SrcMem|ModRM|Mov, DstReg|SrcMem|ModRM|Mov,
+ ByteOp|DstMem|SrcImm|ModRM|Mov, DstMem|SrcImm|ModRM|Mov,
/* 0xC8 - 0xCF */
0, 0, 0, 0, ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
/* 0xD0 - 0xD7 */
@@ -230,8 +231,9 @@ static uint8_t twobyte_table[256] = {
0, 0, 0, DstReg|SrcMem|ModRM,
/* 0xB0 - 0xB7 */
ByteOp|DstMem|SrcReg|ModRM, DstMem|SrcReg|ModRM,
- 0, DstBitBase|SrcReg|ModRM,
- 0, 0, ByteOp|DstReg|SrcMem|ModRM|Mov, DstReg|SrcMem16|ModRM|Mov,
+ DstReg|SrcMem|ModRM|Mov, DstBitBase|SrcReg|ModRM,
+ DstReg|SrcMem|ModRM|Mov, DstReg|SrcMem|ModRM|Mov,
+ ByteOp|DstReg|SrcMem|ModRM|Mov, DstReg|SrcMem16|ModRM|Mov,
/* 0xB8 - 0xBF */
0, 0, DstBitBase|SrcImmByte|ModRM, DstBitBase|SrcReg|ModRM,
DstReg|SrcMem|ModRM, DstReg|SrcMem|ModRM,
@@ -1470,6 +1472,24 @@ x86_emulate(
}
break;
+ case 0xc4: /* les */ {
+ unsigned long sel;
+ dst.val = x86_seg_es;
+ les:
+ generate_exception_if(src.type != OP_MEM, EXC_UD);
+ if ( (rc = ops->read(src.mem.seg, src.mem.off + src.bytes,
+ &sel, 2, ctxt)) != 0 )
+ goto done;
+ if ( (rc = load_seg(dst.val, (uint16_t)sel, ctxt, ops)) != 0 )
+ goto done;
+ dst.val = src.val;
+ break;
+ }
+
+ case 0xc5: /* lds */
+ dst.val = x86_seg_ds;
+ goto les;
+
case 0xd0 ... 0xd1: /* Grp2 */
src.val = 1;
goto grp2;
@@ -2535,6 +2555,18 @@ x86_emulate(
}
}
break;
+
+ case 0xb2: /* lss */
+ dst.val = x86_seg_ss;
+ goto les;
+
+ case 0xb4: /* lfs */
+ dst.val = x86_seg_fs;
+ goto les;
+
+ case 0xb5: /* lgs */
+ dst.val = x86_seg_gs;
+ goto les;
case 0xb6: /* movzx rm8,r{16,32,64} */
/* Recompute DstReg as we may have decoded AH/BH/CH/DH. */
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