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-rw-r--r--src/arch/x86/isa/decoder/one_byte_opcodes.isa5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/arch/x86/isa/decoder/one_byte_opcodes.isa b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
index 040f5d04f..a6173831c 100644
--- a/src/arch/x86/isa/decoder/one_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
@@ -399,8 +399,9 @@
// Really only the LSB matters, but the decoder
// will sign extend it, and there's no easy way to
// specify only checking the first byte.
- -0x80: SyscallInst::int80('xc->syscall(Rax)',
- IsSyscall, IsNonSpeculative, IsSerializeAfter);
+ 0xffffffffffffff80:
+ SyscallInst::int80('xc->syscall(Rax)',
+ IsSyscall, IsNonSpeculative, IsSerializeAfter);
}
}
0x6: decode MODE_SUBMODE {