From aa1501989e2ae769263eedcc8675fd905f90d09e Mon Sep 17 00:00:00 2001
From: Divyam Shankhdhar <00dcs00@gmail.com>
Date: Tue, 24 Mar 2026 21:32:26 +0530
Subject: [PATCH] fix(rvfi): add missing page-fault and ecall cause decodings
 to tracer

Resolves #3239 by adding missing exception decodings (Sv39 page faults and U/S-mode ecalls) mapped to their standard strings for better simulation logging.
---
 corev_apu/tb/rvfi_tracer.sv | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/corev_apu/tb/rvfi_tracer.sv b/corev_apu/tb/rvfi_tracer.sv
index c680f8cd50..ae158d118d 100644
--- a/corev_apu/tb/rvfi_tracer.sv
+++ b/corev_apu/tb/rvfi_tracer.sv
@@ -179,6 +179,11 @@ module rvfi_tracer #(
             32'h6: cause = "ST_ADDR_MISALIGNED";
             32'h7: cause = "ST_ACCESS_FAULT";
             32'hb: cause = "ENV_CALL_MMODE";
+            32'h8: cause = "ENV_CALL_UMODE";
+            32'h9: cause = "ENV_CALL_SMODE";
+            32'hc: cause = "INSTR_PAGE_FAULT";
+            32'hd: cause = "LOAD_PAGE_FAULT";
+            32'hf: cause = "STORE_PAGE_FAULT";
           endcase;
           if (rvfi_i[i].insn[1:0] != 2'b11) begin
             $fwrite(f, "%s exception @ 0x%h (0x%h)\n", cause, pc64, rvfi_i[i].insn[15:0]);