From 4e28a1078e93c15bc8b9076504f2eba4656ccf76 Mon Sep 17 00:00:00 2001
From: iximeow <me@iximeow.net>
Date: Mon, 27 Dec 2021 19:01:58 -0800
Subject: fcmp/fcmpe fixes

---
 src/armv8/a64.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src/armv8')

diff --git a/src/armv8/a64.rs b/src/armv8/a64.rs
index 37cec04..408bc13 100644
--- a/src/armv8/a64.rs
+++ b/src/armv8/a64.rs
@@ -4804,14 +4804,14 @@ impl Decoder<ARMv8> for InstDecoder {
                                         return Err(DecodeError::InvalidOperand);
                                     };
 
-                                    inst.opcode = if opcode & 0b1_0000 != 0 {
+                                    inst.opcode = if opcode2 & 0b1_0000 != 0 {
                                         Opcode::FCMPE
                                     } else {
                                         Opcode::FCMP
                                     };
                                     inst.operands = [
                                         Operand::SIMDRegister(precision, Rn as u16),
-                                        if Rm == 0 {
+                                        if opcode2 & 0b01000 != 0 { // and, sugguested, Rm == 0
                                             Operand::Immediate(0)
                                         } else {
                                             Operand::SIMDRegister(precision, Rm as u16)
-- 
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