On 02/14/2017 06:33 AM, Pranith Kumar wrote:
On Mon, Feb 13, 2017 at 2:19 PM, Richard Henderson <r...@twiddle.net> wrote:
On 02/13/2017 11:10 PM, Alex Bennée wrote:
@@ -239,9 +240,16 @@ static void cpu_exec_step(CPUState *cpu)
1 | CF_NOCACHE | CF_IGNORE_ICOUNT);
tb->orig_tb = NULL;
tb_unlock();
- /* execute the generated code */
- trace_exec_tb_nocache(tb, pc);
- cpu_tb_exec(cpu, tb);
+
+ cc->cpu_exec_enter(cpu);
+
+ if (sigsetjmp(cpu->jmp_env, 0) == 0) {
+ /* execute the generated code */
+ trace_exec_tb_nocache(tb, pc);
+ cpu_tb_exec(cpu, tb);
+ }
I don't understand this, since cpu_tb_exec has its own sigsetjmp. Where is
the exception supposed to come from that escapes?
cpu_exec() has its own sigsetjmp, not cpu_tb_exec(). The exception is
the debug exception from the generated code. Without this new
sigsetjmp, it'll jump to cpu_exec() instead of coming back here.
Bah. Sorry, ENOCOFFEE.
Reviewed-by: Richard Henderson <r...@twiddle.net>
r~
