If we access a register via the QEMU memory inspection commands (e.g.
"xp") rather than from guest code, we won't have a CPU context.
Gracefully fail to access the register in that case, rather than
crashing.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
static int get_current_cpu(void)
{
- return cpu_single_env->cpu_index;
+ if (!cpu_single_env) {
+ return -1;
+ }
+
+ return cpu_single_env->cpu_index;
}
static uint32_t openpic_cpu_read_internal(void *opaque, hwaddr addr,
DPRINTF("%s: cpu %d addr " TARGET_FMT_plx " <= %08x\n", __func__, idx,
addr, val);
+
+ if (idx < 0) {
+ return;
+ }
+
if (addr & 0xF)
return;
dst = &opp->dst[idx];
DPRINTF("%s: cpu %d addr " TARGET_FMT_plx "\n", __func__, idx, addr);
retval = 0xFFFFFFFF;
+
+ if (idx < 0) {
+ return retval;
+ }
+
if (addr & 0xF)
return retval;
dst = &opp->dst[idx];