Handle invalid accesses as SIGILL for mips/mipsel userland emulation.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2235 c046a42c-6fe2-441c-8c8c-71466251a162

linux-user/main.c

@@ -1352,6 +1352,8 @@ void cpu_loop(CPUMIPSState *env)
                 }
             }
             break;
+        case EXCP_TLBL:
+        case EXCP_TLBS:
         case EXCP_CpU:
         case EXCP_RI:
             info.si_signo = TARGET_SIGILL;

target-mips/helper.c

@@ -243,6 +243,12 @@ int cpu_mips_handle_mmu_fault (CPUState *env, target_ulong address, int rw,
     return ret;
 }
 
+#if defined(CONFIG_USER_ONLY)
+void do_interrupt (CPUState *env)
+{
+    env->exception_index = EXCP_NONE;
+}
+#else
 void do_interrupt (CPUState *env)
 {
     target_ulong offset;
@@ -409,3 +415,4 @@ void do_interrupt (CPUState *env)
     }
     env->exception_index = EXCP_NONE;
 }
+#endif /* !defined(CONFIG_USER_ONLY) */

target-mips/translate.c

@@ -4072,6 +4072,7 @@ void cpu_reset (CPUMIPSState *env)
     tlb_flush(env, 1);
 
     /* Minimal init */
+#if !defined(CONFIG_USER_ONLY)
     if (env->hflags & MIPS_HFLAG_BMASK) {
         /* If the exception was raised from a delay slot,
          * come back to the jump.  */
@@ -4098,9 +4099,11 @@ void cpu_reset (CPUMIPSState *env)
     /* Count register increments in debug mode, EJTAG version 1 */
     env->CP0_Debug = (1 << CP0DB_CNT) | (0x1 << CP0DB_VER);
     env->CP0_PRid = MIPS_CPU;
+#endif
     env->exception_index = EXCP_NONE;
 #if defined(CONFIG_USER_ONLY)
     env->hflags |= MIPS_HFLAG_UM;
+    env->user_mode_only = 1;
 #endif
 #ifdef MIPS_USES_FPU
     env->fcr0 = MIPS_FCR0;