From 946fb27c1dc158f10a6e3ce0374a161dce04c27b Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Mon, 12 Sep 2011 13:57:37 +0200 Subject: qemu-timer: move icount to cpus.c None of this is needed by tools, and most of it can even be made static inside cpus.c. Signed-off-by: Paolo Bonzini --- exec-all.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'exec-all.h') diff --git a/exec-all.h b/exec-all.h index 1120f84..72ef246 100644 --- a/exec-all.h +++ b/exec-all.h @@ -356,4 +356,18 @@ extern int singlestep; /* cpu-exec.c */ extern volatile sig_atomic_t exit_request; +/* Deterministic execution requires that IO only be performed on the last + instruction of a TB so that interrupts take effect immediately. */ +static inline int can_do_io(CPUState *env) +{ + if (!use_icount) { + return 1; + } + /* If not executing code then assume we are ok. */ + if (!env->current_tb) { + return 1; + } + return env->can_do_io != 0; +} + #endif -- cgit v1.1