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[2/6] cris: Abort when a v10 takes interrupts while in a delayslot

Message ID 1391310292-18008-3-git-send-email-edgar.iglesias@gmail.com
State New
Headers show

Commit Message

Edgar E. Iglesias Feb. 2, 2014, 3:04 a.m. UTC 
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>

This is an internal error as the CRISv10 should mask interrupts
while executing delay slots. Bail out sooner rather than later.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---
 target-cris/helper.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/target-cris/helper.c b/target-cris/helper.c
index d274b38..c940582 100644
--- a/target-cris/helper.c
+++ b/target-cris/helper.c
@@ -126,6 +126,11 @@  void crisv10_cpu_do_interrupt(CPUState *cs)
           env->exception_index,
           cs->interrupt_request);
 
+    if (env->dslot) {
+        /* CRISv10 never takes interrupts while in a delay-slot.  */
+        cpu_abort(env, "CRIS: Interrupt on delay-slot\n");
+    }
+
     assert(!(env->pregs[PR_CCS] & PFIX_FLAG));
     switch (env->exception_index) {
     case EXCP_BREAK: