sim-halt.patch

microwindows移植到S3C44B0的源码

2001-08-27  Miles Bader  <[e-mail]>

	* simops.c (OP_12007E0): Don't halt the simulator, just let the
	halt insn loop (the loop will be exited by any interrupt).

diff -up sim/v850/simops.c.\~2\~ sim/v850/simops.c
--- sim/v850/simops.c.~2~	Fri Aug 24 15:38:19 2001
+++ sim/v850/simops.c	Mon Aug 27 15:34:48 2001
@@ -1575,10 +1575,10 @@ int
 OP_12007E0 ()
 {
   trace_input ("halt", OP_NONE, 0);
-  /* FIXME this should put processor into a mode where NMI still handled */
   trace_output (OP_NONE);
-  sim_engine_halt (simulator, STATE_CPU (simulator, 0), NULL, PC,
-		   sim_stopped, SIM_SIGTRAP);
+  /* We use a PC adjustment of 0, so the halt insn keeps looping, but
+     interrupts handle it specially, and will cause the halt insn to
+     complete.  */
   return 0;
 }