This function has no architecture specific dependencies and should be
callable from core code. Move it to qom/cpu.h.
Reviewed-by: Richard Henderson <r...@twiddle.net>
Signed-off-by: Peter Crosthwaite <crosthwaite.pe...@gmail.com>
---
include/qom/cpu.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 39712ab..7e5f3b0 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -696,6 +696,27 @@ void QEMU_NORETURN cpu_abort(CPUState *cpu, const char
*fmt, ...)
GCC_FMT_ATTR(2, 3);
void cpu_exec_exit(CPUState *cpu);
+/**
+ * cpu_can_do_io:
+ * @cpu: The CPU for which to check IO.
+ *
+ * Deterministic execution requires that IO only be performed on the last
+ * instruction of a TB so that interrupts take effect immediately.
+ *
+ * Returns: %true if memory-mapped IO is safe, %false otherwise.
+ */
+static inline bool cpu_can_do_io(CPUState *cpu)
+{
+ if (!use_icount) {
+ return true;
+ }
+ /* If not executing code then assume we are ok. */
+ if (cpu->current_tb == NULL) {
+ return true;
+ }
+ return cpu->can_do_io != 0;
+}
+
#ifdef CONFIG_SOFTMMU
extern const struct VMStateDescription vmstate_cpu_common;
#else
--
1.9.1
