From 2756004fe78954754946b61d3f6338d8b72b8332 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Fri, 4 Nov 2022 07:38:20 +0700
Subject: sim: mips: call Unpredictable instead of setting bogus values [PR
 sim/29276]

The intention of this code seems to be to indicate that this insn
should not be used and produces undefined behavior, so instead of
setting registers to bogus values, call Unpredictable.  This fixes
build warnings due to 32-bit/64-bit type conversions, and outputs
a log message for users at runtime instead of silent corruption.

Bug: https://sourceware.org/PR29276
---
 sim/mips/mips.igen | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sim/mips/mips.igen b/sim/mips/mips.igen
index dfad422..0746a52 100644
--- a/sim/mips/mips.igen
+++ b/sim/mips/mips.igen
@@ -1450,7 +1450,7 @@
   else if ((fs & 0x1) == 0)
     GPR[rt] = SET64HI (FGR[fs+1]) | FGR[fs];
   else
-    GPR[rt] = SET64HI (0xDEADC0DE) | 0xBAD0BAD0;
+    Unpredictable ();
   TRACE_ALU_RESULT (GPR[rt]);
 }
 
@@ -5782,7 +5782,7 @@
   else if ((FS & 0x1) == 0)
     v = SET64HI (FGR[FS+1]) | FGR[FS];
   else
-    v = SET64HI (0xDEADC0DE) | 0xBAD0BAD0;
+    Unpredictable ();
   PENDING_FILL (RT, v);
   TRACE_ALU_RESULT (v);
 }
-- 
cgit v1.1