From 11630c1ed116f07964e24b5d8d6ffe698c7bed24 Mon Sep 17 00:00:00 2001
From: JeanRochCoulon <jean-roch.coulon@thalesgroup.com>
Date: Thu, 31 Aug 2023 15:38:35 +0200
Subject: [PATCH] Decode AMOXOR (and others) instructions only in 64 bits

it (should) fixes #1352
---
 core/decoder.sv | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/decoder.sv b/core/decoder.sv
index 4318262b24..f280db8d27 100644
--- a/core/decoder.sv
+++ b/core/decoder.sv
@@ -1073,7 +1073,7 @@ module decoder import ariane_pkg::*; #(
                     instruction_o.rd[4:0]  = instr.atype.rd;
                     // TODO(zarubaf): Ordering
                     // words
-                    if (CVA6Cfg.RVA && instr.stype.funct3 == 3'h2) begin
+                  if (riscv::IS_XLEN64 && CVA6Cfg.RVA && instr.stype.funct3 == 3'h2) begin
                         unique case (instr.instr[31:27])
                             5'h0:  instruction_o.op = ariane_pkg::AMO_ADDW;
                             5'h1:  instruction_o.op = ariane_pkg::AMO_SWAPW;