diff options
Diffstat (limited to 'src/arch/x86/isa/decoder/two_byte_opcodes.isa')
| -rw-r--r-- | src/arch/x86/isa/decoder/two_byte_opcodes.isa | 10 |
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 f3485bc4e..ecd575a5d 100644 --- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa +++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa @@ -109,7 +109,15 @@ default: decode MODRM_REG { 0x0: sgdt_Ms(); 0x1: sidt_Ms(); - 0x2: lgdt_Ms(); + 0x2: decode MODE_SUBMODE { + 0x0: Inst::LGDT(M); + default: decode OPSIZE { + // 16 bit operand sizes are special, but only + // in legacy and compatability modes. + 0x2: Inst::LGDT_16(M); + default: Inst::LGDT(M); + } + } 0x3: lidt_Ms(); 0x4: smsw_Mw(); 0x6: lmsw_Mw(); |