From 2e15497c5b8d0d172dece0cf56e2d2e977a6b679 Mon Sep 17 00:00:00 2001
From: Eric Johnson <ericj@mips.com>
Date: Sat, 17 Sep 2011 17:05:32 -0700
Subject: [PATCH] target-mips: add privilege level check to several Cop0
 instructions

The MIPS Architecture Verification Programs (AVPs) check privileged
instructions for the required privilege level.  These changes are needed
to pass the AVP suite.

Signed-off-by: Eric Johnson <ericj@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 target-mips/translate.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/target-mips/translate.c b/target-mips/translate.c
index 35624e9da1..0cff905db7 100644
--- a/target-mips/translate.c
+++ b/target-mips/translate.c
@@ -5933,6 +5933,7 @@ static void gen_cp0 (CPUMIPSState *env, DisasContext *ctx, uint32_t opc, int rt,
 {
     const char *opn = "ldst";
 
+    check_cp0_enabled(ctx);
     switch (opc) {
     case OPC_MFC0:
         if (rt == 0) {
@@ -10121,6 +10122,7 @@ static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs,
 #ifndef CONFIG_USER_ONLY
     case MFC0:
     case MFC0 + 32:
+        check_cp0_enabled(ctx);
         if (rt == 0) {
             /* Treat as NOP. */
             break;
@@ -10129,6 +10131,7 @@ static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs,
         break;
     case MTC0:
     case MTC0 + 32:
+        check_cp0_enabled(ctx);
         {
             TCGv t0 = tcg_temp_new();
 
@@ -10225,10 +10228,12 @@ static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs,
     case 0x05:
         switch (minor) {
         case RDPGPR:
+            check_cp0_enabled(ctx);
             check_insn(env, ctx, ISA_MIPS32R2);
             gen_load_srsgpr(rt, rs);
             break;
         case WRPGPR:
+            check_cp0_enabled(ctx);
             check_insn(env, ctx, ISA_MIPS32R2);
             gen_store_srsgpr(rt, rs);
             break;
@@ -10269,6 +10274,7 @@ static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs,
     case 0x1d:
         switch (minor) {
         case DI:
+            check_cp0_enabled(ctx);
             {
                 TCGv t0 = tcg_temp_new();
 
@@ -10281,6 +10287,7 @@ static void gen_pool32axf (CPUMIPSState *env, DisasContext *ctx, int rt, int rs,
             }
             break;
         case EI:
+            check_cp0_enabled(ctx);
             {
                 TCGv t0 = tcg_temp_new();
 
@@ -10761,6 +10768,7 @@ static void decode_micromips32_opc (CPUMIPSState *env, DisasContext *ctx,
         minor = (ctx->opcode >> 12) & 0xf;
         switch (minor) {
         case CACHE:
+            check_cp0_enabled(ctx);
             /* Treat as no-op. */
             break;
         case LWC2:
@@ -12211,6 +12219,7 @@ static void decode_opc (CPUMIPSState *env, DisasContext *ctx, int *is_branch)
          gen_st_cond(ctx, op, rt, rs, imm);
          break;
     case OPC_CACHE:
+        check_cp0_enabled(ctx);
         check_insn(env, ctx, ISA_MIPS3 | ISA_MIPS32);
         /* Treat as NOP. */
         break;
-- 
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