* cris/sim-main.h (struct _sim_cpu): New members last_syscall,

	last_open_fd, last_open_flags.
	* cris/traps.c: Don't include targ-vals.h.
	(TARGET_O_ACCMODE): Define.
	(cris_break_13_handler): Set new _sim_cpu members.
	<case TARGET_SYS_fcntl>: Support special case of F_GETFL.
	Rearrange code as switch.  Emit "unimplemented" abort for
	unimplemented fcntl calls.

1 files changed, 11 insertions, 0 deletions

diff --git a/sim/cris/sim-main.h b/sim/cris/sim-main.h
index b671533..b35b927 100644
--- a/sim/cris/sim-main.h
+++ b/sim/cris/sim-main.h
@@ -166,6 +166,17 @@ struct _sim_cpu {
      for sigmasks and sigpendings. */
   USI sighandler[64];
 
+  /* This is a hack to implement just the parts of fcntl F_GETFL that
+     are used in open+fdopen calls for the standard scenario: for such
+     a call we check that the last syscall was open, we check that the
+     passed fd is the same returned then, and so we return the same
+     flags passed to open.  This way, we avoid complicating the
+     generic sim callback machinery by introducing fcntl
+     mechanisms.  */
+  USI last_syscall;
+  USI last_open_fd;
+  USI last_open_flags;
+
   /* Function for initializing CPU thread context, which varies in size
      with each CPU model.  They should be in some constant parts or
      initialized in *_init_cpu, but we can't modify that for now.  */