From 74025eeea7d79d807ac403e680876a32b6ea87e3 Mon Sep 17 00:00:00 2001
From: Andrew Cagney <cagney@redhat.com>
Date: Wed, 15 Apr 1998 14:04:01 +0000
Subject: [PATCH] Re-fix 32 bit DSRAV instruction. Fix mips16 BRANCH, unsigned
 ADD/SUB and SRAV instructions.

---
 sim/mips/ChangeLog | 10 ++++++++++
 sim/mips/mips.igen | 21 +++++++++++++++------
 2 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/sim/mips/ChangeLog b/sim/mips/ChangeLog
index 6c736d65520..1c74f4d45c1 100644
--- a/sim/mips/ChangeLog
+++ b/sim/mips/ChangeLog
@@ -1,3 +1,13 @@
+Wed Apr 15 18:31:54 1998  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* mips.igen (DSRAV): Use function do_dsrav.
+	(SRAV): Use new function do_srav.
+
+	* m16.igen (BEQZ, BNEZ): Compare GPR[TRX] not GPR[RX].
+	(B): Sign extend 11 bit immediate.
+	(EXT-B*): Shift 16 bit immediate left by 1.
+	(ADDIU*): Don't sign extend immediate value.
+
 Wed Apr 15 10:32:15 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 
 	* m16run.c (sim_engine_run): Restore CIA after handling an event.
diff --git a/sim/mips/mips.igen b/sim/mips/mips.igen
index b893e8aebe7..7b4102c7daa 100644
--- a/sim/mips/mips.igen
+++ b/sim/mips/mips.igen
@@ -1287,7 +1287,7 @@
 }
 
 
-:function:::void:do_srav:int rs, int rt, int rd
+:function:::void:do_dsrav:int rs, int rt, int rd
 {
   int s = MASKED64 (GPR[rs], 5, 0);
   TRACE_ALU_INPUT2 (GPR[rt], s);
@@ -1313,12 +1313,12 @@
 *tx19:
 // end-sanitize-tx19
 {
-  do_srav (SD_, RS, RT, RD);
+  do_dsrav (SD_, RS, RT, RD);
 }
 
 
 00000000000,5.RT,5.RD,5.SHIFT,111010:SPECIAL:64::DSRL
-"dsrav r<RD>, r<RT>, <SHIFT>"
+"dsrl r<RD>, r<RT>, <SHIFT>"
 *mipsIII:
 *mipsIV:
 *vr5000:
@@ -2857,6 +2857,16 @@
 }
 
 
+
+:function:::void:do_srav:int rs, int rt, int rd
+{
+  int s = MASKED (GPR[rs], 4, 0);
+  signed32 temp = (signed32) GPR[rt] >> s;
+  TRACE_ALU_INPUT2 (GPR[rt], s);
+  GPR[rd] = EXTEND32 (temp);
+  TRACE_ALU_RESULT (GPR[rd]);
+}
+
 000000,5.RS,5.RT,5.RD,00000000111:SPECIAL:32::SRAV
 "srav r<RD>, r<RT>, r<RS>"
 *mipsI,mipsII,mipsIII,mipsIV:
@@ -2875,12 +2885,11 @@
 *tx19:
 // end-sanitize-tx19
 {
-  int s = MASKED (GPR[RS], 4, 0);
-  signed32 temp = (signed32) GPR[RT] >> s;
-  GPR[RD] = EXTEND32 (temp);
+  do_srav (SD_, RS, RT, RD);
 }
 
 
+
 :function:::void:do_srl:int rt, int rd, int shift
 {
   unsigned32 temp = (unsigned32) GPR[rt] >> shift;
-- 
2.30.2