changelog

这个是LINUX下的GDB调度工具的源码

Mon Aug 25 16:17:06 1997  Andrew Cagney  <[e-mail]>

	* sim_calls.c (sim_open): Add ABFD argument.

Thu Jul  3 10:18:06 1997  Andrew Cagney  <[e-mail]>

	* ppc-instructions (PPC_INSN_INT): From Michael Thies - Monitoring
 	CR register updates dependant on RC value had logic backwards.

	* ppc-instructions (Load String Word Immediate): From Brad Parker
 	- sense of wrap test in check for overwriting RA wrong.
	(Load String Word Indexed): Ditto.
	
	* configure.in: From Erik Landry - set sim_default_model not
 	sim_model for sim-default-model option.
	* configure: Regenerate.
	
	* interrupts.c (check_masked_interrupts): Schedule a hardware
 	interrupt delivery when FP interrupts get enabled.
	(program_interrupt): Generate FP exceptions instead of aborting.
	(deliver_hardware_interrupt): Deliver a FP exception if so
 	enabled.

	* registers.h: Add definition of fpscr_vx_bits.

	* idecode_expression.h (FPSCR_END): Always update FEX and VX bits
 	in FPSCR.
	(FPSCR_END): Explicitly check for possible floating point
 	exception conditions.
	(FPSCR_BEGIN): Simplify.
	
	* ppc-instructions (Move From FPSCR): Enable.
	(Move To FPSCR Bit 1): Ditto.
	(Move To FPSCR Bit 0): Ditto.
	(Move To FPSCR Field Immediate): Ditto.
	(Move to Condition Register from FPSCR): Simplify.
	(invalid_arithemetic_operation): Generate a QNaN when invalid
 	operation exception disabled.
	
Tue May 20 10:22:50 1997  Andrew Cagney  <[e-mail]>

	* sim_calls.c (sim_open): Add callback argument.
	(sim_set_callbacks): Delete.

Tue Apr 22 22:36:57 1997  Mike Meissner  <[e-mail]>

	* sim_callbacks.h (error): Make declaration match gdb's.
	* main.c (error): Ditto.

Fri Apr 18 17:03:09 1997  Andrew Cagney  <[e-mail]>

	* sim_calls.c (sim_stop_reason): Simplify.  Was running implies
 	stopped/SIGINT. Exit implies a status code.

	* psim.c (cntrl_c_simulation): From main.c.  Event function that
 	halts the simulator.
	(psim_stop): New. Asynchronously schedule a stop simulator event.
	(psim_run_until_stop): Delete. Made redundant by psim_stop.

	* main.c (cntrl_c): Update.
	(cntrl_c_simulation): Moved to psim.c.

	* sim_calls.c (sim_stop): New function. Use psim_stop which
 	schedules a stop event.
	(sim_resume): Drop SIGINT handler, now in gdb/main.c.
	(sim_resume): Use psim_run as stop variable no longer needed.

Fri Apr 18 17:03:08 1997  Andrew Cagney  <[e-mail]>

	* psim.c (psim_options): Handle -E option correctly.
	(psim_usage): Document.

Thu Apr 17 03:28:03 1997  Doug Evans  <[e-mail]>

	* psim.c (psim_options): Ignore -E option (sets endianness).
	* sim_calls.c: #include bfd.h.
	(entry_point): New static local.
	(sim_load): Return SIM_RC.  New arg abfd.  Set start address from bfd.
	(sim_create_inferior): Return SIM_RC.  Delete arg start_address.

Tue Apr 15 14:57:18 1997  Ian Lance Taylor  <[e-mail]>

	* Makefile.in (INSTALL): Set to @INSTALL@.
	(INSTALL_XFORM, INSTALL_XFORM1): Remove.
	(install): Depend upon installdirs.  Use $(program_transform_name)
	directly, rather than using $(INSTALL_XFORM).
	(installdirs): New target.

Fri Apr  4 17:54:36 1997  Jim Wilson  <[e-mail]>

	* Makefile.in (tmp-hw, tmp-pk): Use for loop to eliminate duplicates
	rather than the non-portable cat -n.

Mon Apr 14 16:29:51 1997  Ian Lance Taylor  <[e-mail]>

	* Makefile.in (INSTALL): Change install.sh to install-sh.

Tue Apr  1 18:15:14 1997  Jim Wilson  <[e-mail]>

	* ppc-instructions: Change milhwu to mulhwu.

Wed Apr  2 15:38:08 1997  Doug Evans  <[e-mail]>

	* sim_calls.c (sim_open): New arg `kind'.

Wed Apr  2 14:51:17 1997  Ian Lance Taylor  <[e-mail]>

	* COPYING: Update FSF address.

Tue Mar 25 16:17:59 1997  Andrew Cagney  <[e-mail]>

	* main.c (sim_io_read_stdin): Only compile unbuffered IO code if
 	all the required features are supported by the host OS.

Tue Mar 25 12:13:02 1997  Andrew Cagney  <[e-mail]>

	* emul_bugapi.c (emul_bugapi_create): Guard against NULL images.

	* configure.in (enable-sim-endain): Correct typo in usage (from
 	Erik Landry <[e-mail]>).
	* configure: Re-generate.

Fri Mar 14 18:23:02 1997  Andrew Cagney  <[e-mail]>

	* Makefile.in (targ-vals.def): Re-do rule so that it works with
 	FreeBSD's make.  Didn't like $<.

Thu Mar 13 12:55:48 1997  Doug Evans  <[e-mail]>

	* sim_calls.c (sim_open): New SIM_DESC result.  Argument is now
	in argv form.
	(other sim_*): New SIM_DESC argument.

Thu Feb 13 10:35:14 1997  Andrew Cagney  <[e-mail]>

	* ppc-opcode-simple-array, ppc-opcode-simple-goto,
 	ppc-opcode-simple-switch, ppc-opcode-complex-array,
 	ppc-opcode-complex-goto, ppc-opcode-complex-switch,
 	ppc-opcode-jump, ppc-opcode-goto, ppc-opcode-flat: Delete,
 	superseeded by --sim-decode-mechanism option.

	* ppc-opcode-simple, dc-simple: Rename to be 8.3
	* ppc-opcode-complex, dc-complex: Ditto.
	* ppc-opcode-stupid, dc-stupid: Ditto.
	* ppc-opcode-test-1, dc-test.01: Ditto.
	* ppc-opcode-test-2, dc-test.02: Ditto.

	* configure.in (--enable-sim-opcode): Change prefix to dc- instead
 	of ppc-opcode-.

Wed Feb 12 19:33:45 1997  Andrew Cagney  <[e-mail]>

	* Many of the ppc-opcode-* files are identical baring the type of
 	lookup table.  Instead of having multiple tables, igen can do this
	via an additional option.
	
	* ld-decode.h, ld-decode.c (force_decode_gen_type): New function,
 	allow the type of generated table specified in the decode file to
 	be overridden.

	* ld-decode.c (load_decode_table): Allow the table type to be
 	overridden.

	* igen.c (main): Add -T <mechanism> option so that an overriding
 	instruction decode mechanism can be specified.

	* configure.in: New option --sim-decode-mechanism to control
 	igen's new -T <mechanism> flag.
	* Makefile.in (IGEN_FLAGS): Add IGEN_IDECODE_MECHANISM set by the
 	configure script.
	* configure: Regenerate.
	
Tue Feb 11 13:49:10 1997  Michael Meissner  <[e-mail]>

	* events.c (event_queue_create): Don't use NULL to initialize an
	integer field.
	(even_queue_{init,schedule_after_signal,tick}): Conditionalize use
	of sigprocmask to appropriate autoconf test.

	* main.c ({cntrl_c,main}): Use RETSIGTYPE for signal return type,
	don't assume void.
	* sim_calls.c (sim_{ctrl_c,resume}): Ditto.

	* Makefile.in (callback.o): Define HAVE_CONFIG_H, so callback.c
	includes our config.h.

Tue Feb  4 13:42:59 1997  Doug Evans  <[e-mail]>

	* configure.in: Fix typo in test for callback.c.
	* configure: Regenerated.

Fri Feb  7 10:04:25 1997  Andrew Cagney  <[e-mail]>

	* emul_chirp.c (emul_chirp_create): Handle a virtbase of -1 being
 	found in the device tree.

Wed Feb  5 10:56:27 1997  Andrew Cagney  <[e-mail]>

	* Property create/initialization still wasn't correctly ordered.
  	Should be delaying everything related to ihandle creation until
 	after the rest of the tree has been established.
	
	* device.c (device_find_ihandle_runtime_property): Update.
	(device_add_ihandle_runtime_property): Update.

	* tree.c (parse_ihandle_property): Delay lookup of the device to
 	be opened until the ihandle initialization phase.
	* tree.c (print_properties): Update.

Wed Feb  5 10:56:27 1997  Andrew Cagney  <[e-mail]>
	
	* gen-icache.c (print_icache_extraction): Add a reason parameter.
  	Augment each extracted field with a comment citing the codes
 	origin.  Should simplify tracking down incorrect cache
 	extractions.

Tue Feb  4 17:44:51 1997  Andrew Cagney  <[e-mail]>

	* gen-icache.c: Generalize code handling XXX_is_NNN so that it
 	works for normal and boolean table entries.

	* psim.c (psim_write_memory): last_cpu == -1 or nr_cpus is now
 	valid.  Handle this just like *_{read,write}_register now handles
 	it.

Mon Feb  3 17:18:16 1997  Andrew Cagney  <[e-mail]>

	* events.c (insert_event_entry): Correct loop termination
 	assertions.

Fri Jan 31 16:20:26 1997  Andrew Cagney  <[e-mail]>

	* psim.c (psim_options): Add new option -c for max-iterations or
 	count.
	(psim_usage): Document.
	(psim_max_iterations_exceeded): New function, abort simulation if
 	max iterations exceeded.

	* gen-idecode.c: Re-work the table lookup code so that it assumes
 	that the entry is a leaf by default.  Simplify the boolean table
 	entry code so that it involves a mask + test instead of shift +
 	shift + mask + test.

	* gen-idecode.c: Correct generated igen body so that it no drops
 	or doubles clock interrupts.

	
Thu Jan 30 11:23:20 1997  Andrew Cagney  <[e-mail]>

	* Makefile.in (BUILT_SRC_WO_CONFIG): Change targ-vals.* to
 	@sim_targ_vals@

	* configure.in (sim_callback, sim_targ_vals): Set sim_targ_valls
 	if common callback is present.

Wed Jan 29 12:32:41 1997  Michael Meissner  <[e-mail]>

	* configure.in (sim_callback): If the gdb is post 4.16, configure
	callback support from the common directory.
	* configure: Regenerate.

	* Makefile.in (BUILT_SRC_WO_CONFIG): Add targ-vals.{h,def} and
	targ-map.c.
	(GDB_OBJ): Add callback support configured in.
	(gentmap,targ-vals.def): Build from common directory.
	(targ-vals.h,targ-map.c): Build by running gentmap.
	(callback.o): Build from source in common directory.
	(targ-map.o): Add dependency.
	(clean): Remove gentmap.

Wed Jan 29 12:14:19 1997  Andrew Cagney  <[e-mail]>

	* igen wasn't aborting if the opcode table contained no valid
 	fields.
	
	* misc.c (name2i): Possibly abort if an invalid name is
 	encountered.
	* ld-decode.c: Abort if the table type isn't found.

Wed Jan 29 12:14:19 1997  Andrew Cagney  <[e-mail]>

	* When performance monitoring is disabled, it is still possible to
 	determine the simulation speed by looking at the number of elapsed
 	ticks recorded by the event queue.
	
	* psim.c (psim_write_register, psim_read_register): Force the cpu
 	to zero when it is either of `-1' or `nr_cpus'.  In both cases the
 	next cpu would be zero any way.

	* mon.c (mon_print_info): If possible, print the system cycle
 	performance.  This is an indication of the number of instructions
 	per second.

Wed Jan 29 12:14:19 1997  Andrew Cagney  <[e-mail]>

	* The code to allow an event queue to be updated during a signal
 	was missing.  For main.c, a cntrl-c simulation termination wasn't
 	handled cleanly.
	
	* The simulation would not correctly restart if an event requested
 	that the simulation be halted.
	
	* psim.c (psim_options): Add hack to -i option to optionally
 	include a level vis -i2.
	(psim_usage): Document.

	* main.c (cntrl_c, cntrl_c_simulation): New functions.  When a
 	cntrl-c occures schedule an event to halt the simulation.
	(main): Catch CNTRL-C signals with the function cntrl_c.

	* events.c (event_queue_process): Mask interrupts while
 	manipulating the async event queue.
	(event_queue_init): Ditto.
	(event_queue_schedule_after_signal): Ditto.

	* events.c (event_queue_process): Mark the event queue as being in
 	the processing state when processing has started.  Adjust code
	so that it is tolerant of halts.
	(event_queue_init): Start the event queue out with processing
 	false.
	(event_queue_tick): Check that processing isn't still being
 	performed.
	
	* gen-idecode.c (print_run_until_stop_body): Call
 	event_queue_process_events to clear possibly pending events before
 	starting a simulation run.  Re-arange main loop so that simulator
 	is correctly restarted when an event halts the simulation.

	* psim.c (psim_halt): Handle an event halting the simulation.
	* psim.c (psim_init): Adjust initial cpu - == -1 - to match
 	reworked idecode.

Wed Jan 29 12:14:19 1997  Andrew Cagney  <[e-mail]>

	* ppc-opcode-complex: Correct typo - was expanding ORA instead of
 	RA.  Based on instruction frequency stats, expand additional
 	instructions.
	* ppc-instructions: Change all `RA == 0' to RA_is_0.
	
	* ppc-opcode-stupid: Move all but the basic table in -complex into
 	here.  Update to new format.
	
	* Makefile.in (tmp-defines): New target. Force defines.h to always
 	be built.  Hence get ppc-opcode-goto to build.

Tue Jan 28 13:00:19 1997  Andrew Cagney  <[e-mail]>

	* hw_com.c (hw_com_instance_read, hw_com_instance_write):
 	Implement.
	
Thu Jan 23 09:07:26 1997  Andrew Cagney  <[e-mail]>

	* hw_trace.c (hw_trace_init_data): Delete.  The trace options need
 	to be initialized independant of the rest of the simulation
 	initalization.  Otherwize a trace option explictly set from gdb
 	could be overridden by hw_trace.

	* psim.c (psim_options): Clarify reason why the trace ioctl occures.

	* FIXME: The trace code is too scattered - hw_trace.c, psim.c,
 	debug.c.  It could be much simpler.