From: Yongbok Kim <yongbok.kim@mips.com>
Date: Wed, 20 Jun 2018 12:05:47 +0000 (+0100)
Subject: target/mips: Fix microMIPS on reset
X-Git-Tag: qemu-xen-4.12.0-rc1~130^2~3
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=0305d194be1dbda09fa7a7c883894030d07c355f;p=qemu-xen.git

target/mips: Fix microMIPS on reset

Fix to activate microMIPS on reset when Config3.ISA == {1, 3}

Signed-off-by: Yongbok Kim <yongbok.kim@mips.com>
Reviewed-by: Aleksandar Markovic <aleksandar.markovic@mips.com>
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@mips.com>
---

diff --git a/target/mips/translate.c b/target/mips/translate.c
index e57d71e485..2eb211ae8c 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -20713,6 +20713,11 @@ void cpu_state_reset(CPUMIPSState *env)
         env->CP0_Status |= (1 << CP0St_FR);
     }
 
+    if (env->CP0_Config3 & (1 << CP0C3_ISA)) {
+        /*  microMIPS on reset when Config3.ISA == {1, 3} */
+        env->hflags |= MIPS_HFLAG_M16;
+    }
+
     /* MSA */
     if (env->CP0_Config3 & (1 << CP0C3_MSAP)) {
         msa_reset(env);