diff mbox series

[v6,51/77] target/mips: Fix ERET/ERETNC behavior related to ADEL exception

Message ID 1533219424-7627-52-git-send-email-stefan.markovic@rt-rk.com
State New
Headers show
Series Add nanoMIPS support to QEMU | expand

Commit Message

Stefan Markovic Aug. 2, 2018, 2:16 p.m. UTC 
From: Yongbok Kim <yongbok.kim@mips.com>

Fix ERET/ERETNC so that ADEL exception can be raised.

Signed-off-by: Yongbok Kim <yongbok.kim@mips.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
---
 target/mips/op_helper.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/target/mips/op_helper.c b/target/mips/op_helper.c
index 6dc6bb6..65935e7 100644
--- a/target/mips/op_helper.c
+++ b/target/mips/op_helper.c
@@ -2393,7 +2393,6 @@  static void set_pc(CPUMIPSState *env, target_ulong error_pc)
 {
     env->active_tc.PC = error_pc & ~(target_ulong)1;
     if (env->insn_flags & ISA_NANOMIPS32) {
-        /* Don't clear MIPS_HFLAG_M16 */
         return;
     }
     if (error_pc & 1) {
@@ -2431,10 +2430,12 @@  void helper_eretnc(CPUMIPSState *env)
 void helper_deret(CPUMIPSState *env)
 {
     debug_pre_eret(env);
-    set_pc(env, env->CP0_DEPC);
 
     env->hflags &= ~MIPS_HFLAG_DM;
     compute_hflags(env);
+
+    set_pc(env, env->CP0_DEPC);
+
     debug_post_eret(env);
 }
 #endif /* !CONFIG_USER_ONLY */