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-rw-r--r--src/arch/x86/isa/decoder/one_byte_opcodes.isa2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/arch/x86/isa/decoder/one_byte_opcodes.isa b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
index d6cfdc593..0225657c4 100644
--- a/src/arch/x86/isa/decoder/one_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
@@ -419,7 +419,7 @@
// extend it, and there's no easy way to specify only checking
// the first byte.
0x5: decode IMMEDIATE {
- 0xffffffffffffff80:
+ -0x80:
SyscallInst::int80('xc->syscall(Rax)', IsSyscall);
default: int_Ib();
}