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-rw-r--r--src/arch/x86/isa/decoder/two_byte_opcodes.isa10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
index ecd575a5d..717a8f26f 100644
--- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
@@ -118,7 +118,15 @@
default: Inst::LGDT(M);
}
}
- 0x3: lidt_Ms();
+ 0x3: decode MODE_SUBMODE {
+ 0x0: Inst::LIDT(M);
+ default: decode OPSIZE {
+ // 16 bit operand sizes are special, but only
+ // in legacy and compatability modes.
+ 0x2: Inst::LIDT_16(M);
+ default: Inst::LIDT(M);
+ }
+ }
0x4: smsw_Mw();
0x6: lmsw_Mw();
0x7: invlpg_M();