From: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Date: Fri, 11 Sep 2009 08:38:31 +0000 (+0200)
Subject: microblaze: Trap if QEMU finds an unknown insns.
X-Git-Tag: TizenStudio_2.0_p2.3~7577
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=74ec69a5ea04b54f4bc8a27b06cb953d24a25cab;p=sdk%2Femulator%2Fqemu.git

microblaze: Trap if QEMU finds an unknown insns.

If PVR settings enable illegal insn trap, trap when QEMU finds an
insn it knows nothing about.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
---

diff --git a/target-microblaze/translate.c b/target-microblaze/translate.c
index 37d250f..fe53b2e 100644
--- a/target-microblaze/translate.c
+++ b/target-microblaze/translate.c
@@ -1144,6 +1144,12 @@ static void dec_fpu(DisasContext *dc)
 
 static void dec_null(DisasContext *dc)
 {
+    if ((dc->tb_flags & MSR_EE_FLAG)
+          && (dc->env->pvr.regs[2] & PVR2_ILL_OPCODE_EXC_MASK)) {
+        tcg_gen_movi_tl(cpu_SR[SR_ESR], ESR_EC_ILLEGAL_OP);
+        t_gen_raise_exception(dc, EXCP_HW_EXCP);
+        return;
+    }
     qemu_log ("unknown insn pc=%x opc=%x\n", dc->pc, dc->opcode);
     dc->abort_at_next_insn = 1;
 }