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

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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.
This commit is contained in:
Hans-Peter Nilsson
2005-11-17 16:14:53 +00:00
parent 5457266c93
commit ed1f044ac6
3 changed files with 61 additions and 5 deletions
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11
sim/cris/sim-main.h
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@ -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. */