[deliverable/binutils-gdb.git] / sim / ppc / ChangeLog

Wed Nov 20 00:36:55 1996  Doug Evans  <dje@canuck.cygnus.com>

	* sim_calls.c (sim_resume): Reset sim_should_run if single stepping.

Fri Nov 15 15:23:39 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* pk_disklabel.c (pk_disklabel_create_instance): Fix up some
	warnings generated by GCC.

Fri Nov  1 14:42:57 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* mon.c (_cpu_mon): Add fields for counting 1, 2, 4, and 8 byte
	reads and writes.
	(mon_{read,write}): Count 1, 2, 4, and 8 byte reads/writes.
	(mon_print_info): Correct typo regarding # of unaligned reads and
	writes.  Print out how many 1, 2, 4, and 8 byte reads/writes there
	are.

Tue Oct 29 17:55:43 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure.in (AC_CHECK_FUNCS): Add access.
	* config{.in,ure}: Regenerate.

	* emul_unix.c (do_unix_nop): System call that always succeeds.
	(do_unix_access): Support access system call.
	(solaris_descriptors): Make sigaltstack and sigaction nops.
	({solaris,linux}_descriptors): Add support for access.

Fri Oct 18 12:12:21 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* ppc-instructions (Floating Select): Add support for fsel unless
	model is 601.  Allow user to filter out instruction unless -Fs is
	passed to igen.
	(Store Floating-Point as Integer Word Indexed): Raise optional
	instruction program abort.  Allow user to filter out instruction
	unless -Fs is passed to igen.
	(Floating Square Root{, Single}): Ditto.
	(Floating Reciprocal Estimate Single): Ditto.
	(Floating Reciprocal Square Root Estimate): Ditto.

	* configure.in (--enable-sim-filter): If not passed, pass 32,f,s
	to igen.
	* configure: Regenerate.

	* interrupts.h (program_interrupt_reasons): Add
	optional_instruction_program_interrupt.

	* interrupts.c (program_interrupt): Call error with more detailed
	information on program interrupts, particularly in user mode.  Add
	support for optional_instruction_program_interrupt.

Thu Oct  3 16:15:20 1996  Jason Molenda  (crash@godzilla.cygnus.co.jp)

	* Makefile.in (clean): Move config.log to distclean.

Thu Sep 19 14:40:40 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* debug.h: Add disklabel-package and disk-device trace options.
	debug.h (PTRACE): Add macro to simplify tracing in packages.

Thu Sep 19 14:40:40 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.c (device_create_instance_from): Tighten up loop
        searching for device instances.
	(device_instance_delete): Ditto.
	(device_instance_delete): Only leaf instances need to be removed
        from a devices list of active instances.

Thu Sep 19 14:40:40 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_disk.c: Add the cdrom as an alias.

	* pk_disklabel.c (disklabel_delete): Implement, remembering to
        delete the raw disk instance while we're at it.

	* pk_disklabel.c (pk_disklabel_create_instance): Implement a
        little bit more - still a long way to go.

	* pk_disklabel.c (disklabel_write, disklabel_read): Remember the
        new head position after a read or write.

Thu Sep 19 13:05:40 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* emul_chirp.c (chirp_emul_read): Allow reads to be longer then
        the internal buffer.

Thu Sep 19 13:05:40 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* emul_chirp.c (chirp_read_t2h_args): Call memset-0 with the args
        in the correct order.

	* emul_chirp.c (chirp_emul_call_method): Correct computation for
        the address of the first stack argument passed in from the client
        program.

Wed Sep 18 19:33:54 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* words.h: Add new types signed_cell and unsigned_cell which
        correspond to the signed and unsigned IEEE 1275 memory locations.
	* device.h, device.c, emul_chirp.c: Where refering to an IEEE 1275
        memory cell, replace uses of unsigned32 with unsigned_cell.
	* device_table.h: Ditto.

	* sim-endian.h: Add new macros H2BE_cell and BE2H_cell which
        convert cell sized values to from big endian.
	* device.c, emul_chirp.c: Where refering to IEEE 1275 memory cells
        use these new macros.

Tue Sep 17 15:57:44 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.c (device_tree_add_parsed): Detect and report an
        interrupt being attached to an invalid device. Was dumping core.

Mon Sep 16 23:09:12 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.h, device.c (device_address_to_attach_address,
        device_size_to_attach_size): New functions.  Convert a devices
        unit address or unit size structure into a form suitable for
        passing on to the attach and detach functions.
	* device_table.h: Add extra methods to device table.

	* device.h, device.c (device_find_reg_property): New function.
        For a reg type property, return the selected address + size
        tupple, along with a positive success status.  Add a reg_property
        to the list of property types.
	* (device_tree_add_parsed): Make array properties with the name
        reg or alternate-reg of type reg_property.

	* hw_memory.c (hw_memory_init_address): Rewrite to use new
        find_reg_property method.
	* hw_nvram.c (hw_nvram_init_address): Ditto.

	* device.c (device_tree_print_device): Add code to print out a reg
        property.

	* device_table.c (generic_device_address_to_attach_address,
        generic_device_size_to_attach_size ): New functions.  Generic
        functions for converting between unit and attach address or size.

	* device_table.c (generic_device_init_address): Rewrite to use the
        new find_reg and address convert functions.  Look for both reg and
        alternate-reg properties.

Mon Sep 16 23:09:12 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_com.c: New file.  A '550 serial device that can quickly be
        attached to any bus.
	* configure.in (enable-sim-hardware): Add the com device.
	* configure: re-generate.

Thu Sep 12 17:30:56 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.c (device_tree_verify_reg_unit_address): New
        function. Check that the unit address as specified by the reg
        property correctly corresponds to any unit address previously
        specified by the devices name.
	(device_tree_add_parsed): When adding a reg property, verify
	that the unit-address - first value of property - correctly
	matches any previous value specified when creating the device
	node.

Thu Sep 12 17:30:56 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* mon.c (mon_event): Remove assertion that an unsigned is >= 0.

Fri Aug 16 12:05:24 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* device.c (device_full_name): Cast strdup to char *, since AIX
	3.2.5 mistakenly declares the function to be const char *.
	(device_create_from): Ditto.
	(device_create_instance_from): Ditto.
	(device_add_property): Ditto.

Tue Aug 13 11:40:14 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* debug.c (trace_option): For -t all, do not set the
	trace_dump_device_tree flag, so that the simulator is run.

Tue Aug 13 11:40:14 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* Makefile.in (options.o): Depend on defines.h.
	(defines.h): New rule, go through config.h and make strings of all
	of the #define HAVE_xxx macros.
	(distclean): Remove defines.h.

	* options.c (print_options): Print whether many of the
	configuration macros are defined.

	* main.c (main): If -t options and no filename, just print the
	options, and don't print the usage message.

Mon Aug 12 18:42:37 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure.in: Test whether /dev/zero works on the system, and if
	it does, define HAVE_DEVZERO.
	* configure: Regenerate.

	* emul_generic.c (emul_add_tree_hardware): Do not add /iobus/disk
	if we don't have a working /dev/zero on the system.

	* emul_bugapi.c (emul_bugapi_init): If HAVE_DEVZERO is not
	defined, don't add disk support.
	(emul_bugapi_do_diskio): Ditto.
	(emul_bugapi_instruction_call): Ditto.

Wed Aug  7 14:34:20 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* emul_unix.c (HAVE_TCGETATTR): If HAVE_TERMIOS_STRUCTURE is not
	defined, make sure HAVE_TCGETATTR is #undef'ed

Wed Aug  7 14:34:20 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* std-config.h (REGPARM): Only define REGPARM attributes if using
	GNU C.  Test for __i686__ in case GCC ever defines it.  If not on
	a x86 platform, define REGPARM as nothing.

	* sim-endian.h (WITH_HOST_BYTE_ORDER): Test for i686 and __i686__
	also.

Wed Aug  7 20:19:55 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* ld-decode.h, ld-decode.c: Rename goto_gen to the more correct
 	goto_switch_gen.
	* gen-idecode.c: Ditto.

	* gen-idecode.c (print_idecode_table): Comment out check for
 	switch/table combination until a bug with it is fixed.

	* ppc-opcode-goto: New file.  Like complex and flat but uses
 	goto-switch instead of padded-switch for the tables.

	* gen-idecode.c (print_goto_switch_name): New function.
	(print_goto_switch_table_leaf): New function.
	(print_goto_switch_break): New function.
	(print_goto_switch_table): New function. Prints a jump table
	that can be jumped into instead of a switch statement.

	* gen-idecode.c (*switch_*): As an option output a switch that is
 	implemented using a jump table but only if the switch is not
 	boolean.
	
Tue Aug  6 09:28:22 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure.in (--enable-sim-{hardware,packages}): Fix typos.
	* configure: Regenerate.

	* device.c (device_instance_call_method): Fixup format message in
	error case.  Return 0 in case of error to shut up compiler
	warnings.

Wed Aug  7 00:17:37 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device_table.c (generic_device_unit_decode): Require a comma
        between elements of a unit address.

	* device.c (device_tree_print_device): For reg, alternate-reg and
        ranges properties use special print functions.
	(device_print_ranges_property): Print formatted ranges property.
	(device_print_reg_property): Print formatted reg property.

Tue Aug  6 21:35:18 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.c (device_tree_add_parsed): For reg, ranges and
        alternate-reg properties use a special parser.
	(device_tree_parse_reg_property): New function to parse a reg
	property.
	(device_tree_parse_ranges_property): New function to parse a
	ranges property.
	(device_encode_unit): Wrapper for encode_unit callback.
	(device_decoce_unit): Wrapper for decode_unit callback.

Wed Jul 31 00:02:30 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device_table.h (device_instance_callbacks): Relace the claim and
        release methods with a more general table mapping from method-name
        to method-function.

	* device.c (device_instance_call_method): New function.  Implement
        the OpenBoot call-method client interface.  Attempts to locate the
        instances method in the callback table.
	(device_instance_claim, device_instance_release): Delete.
        Replaced with call-method and a lookup table.

	* emul_chirp.c (chirp_emul_call_method): Use the new device
        instance call method and let that handle a client claim call.

	* hw_htab.c (claim_memory): Wrapper function to call the memory
        devices "claim" method using the new device-instance call-method
        interface.  Replaces the previous direct calls to claim.
	(htab_map_region): Use claim_memory.
	(htab_init_data_callback): Ditto.

	* hw_memory.c (hw_memory_instance_claim): Update function
        interface so that it is compatible with call-method.
	(hw_memory_instance_release): Ditto.
	(hw_memory_instance_methods): New table of memory specific
        methods claim and release.  Add to the hw_memory_callback
	table.

Tue Jul 30 21:26:14 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* psim.c (psim_init): Back out of change to initial value of
        system->last_cpu.

Tue Jul 30 21:12:24 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* sim_callbacks.h (sim_io_printf_filtered): Replace
	printf_filtered with a local simulator specific version.  Add
	#define printf_filtered to simplify updating of existing code.

	* sim_callbacks.h (sim_io_write_stdout, sim_io_read_stdin,
        sim_io_write_stderr): New functions.  Read / write to the
        simulations stdin and stdout and stderr interfaces.  Merge in code
        from hw_pal that previously handled async I/O.
	(sim_io_flush_stdoutput): Rename flush_stdoutput.  Add #define
	flush_stdoutput to simplify updating of existing code.

	* hw_pal.c (scan_hw_pal, write_hw_pal,
        hw_pal_instance_write_callback): Use the new sim_io functions.

	* main.c: Implement standalone versions of the new sim_io
        functions.  Include support for async I/O.
	* sim_calls.c: Ditto.  This time using the gdb callback table.

	* std-config.h (CURRENT_STDIO, current_stdio): New macro. Set up
        stdio configuration so that it works in the same way as the rest
        of the simulation.
	* psim.c (psim_create): Initialize current_stdio from the device
        tree.
	* emul_generic.c (emul_add_tree_options): Enter a default value
        for use-stdio in the device tree.

Fri Jul 26 19:43:03 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* gen-idecode.c (print_jump): Was always generating a jump back to
 	idecode.  Only necessary at tail of semantic code.
	(print_jump): Was always setting the processor's cia, even during
 	startup when the processor was still undefined.
	(print_jump): For safety, restart smp loop when cpu_nr >= nr_cpus,
 	not just equal.
	
	* options.c (print_options): Add printing of WITH_REGPARM and
 	WITH_STDCALL.

	* std-config.h (WITH_REGPARM, WITH_STDCALL): Provide default
 	(disabled) values if not defined.

Fri Jul 26 00:36:35 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* ppc-cache-rules (cache): Change RS and RB to cache instead of
        compute.  The block move instructions use them.

	* idecode_expression.h (FPSCR_SET): New macro, set specific FPSCR
        register.
	(CR_FIELD): New macro, extract specific CR register.
	(FPSCR_FIELD): New macro, extract specific FPSCR register.

	* registers.h (GPR): New macro, simplify accesses to GPR[i].

	* bits.c (INSERTED): Covert INSERTED macro into a function.
	(EXTRACTED): Conditionally compile on correct bit size macro.

	* bits.h (BIT8): New macro, set a single bit in an 8 bit byte.

	* ppc-instructions: With hints from Paul Martin, type in missing
	some instruction semantics.  Leave disabled for the moment.
	(Load Multiple Word): Ditto.
	(Store Multiple Word): Ditto.
	(Load String Word Immediate): Ditto.
	(Load String Word Indexed): Ditto.
	(Store String Word Immedate): Ditto.
	(Store String Word Indexed): Ditto.
	(Move to Condition Register from XER): Ditto.
	(Move From Condition Register): Ditto.
	(Move From FPSCR): Ditto.
	(Move to Condition Register from FPSCR): Ditto.
	(Move To FPSCR Field Immediate): Ditto.
	(Move To FPSCR Fields): Ditto.
	(Move To FPSCR Bit 0): Ditto.
	(Move To FPSCR Bit 1): Ditto.

Thu Jul 25 22:10:40 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* std-config.h (SEMANTICS_INLINE): By default, mask out the
        inlining of semantic functions from DEFAULT_INLINE.  Almost all
        configurations call the semantic code via a pointer so there is
        little benefit.

	* std-config.h (ICACHE_INLINE): Ditto.

Thu Jul 25 20:07:30 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* configure.in (sim_regparm): Add configuration option for
        enabling GCC's regparm attribute.
	* (sim_stdcall): Add configuration option for enabling GCC's
        stdcall attribute.

	* Makefile.in (REGPARM_CFLAGS): Pass regparam configuration onto
        compilations.
	* (STDCALL_CFLAGS): Pass stdcall configuration onto compilations.

	* std-config.h (REGPARM): Extend construction of REGPARM macro so
        that it can include __stdcall__ function attribute.

Wed Jul 24 19:04:20 1996  Andrew Cagney  <cagney@sawnoff>

	* options.c (print_options): Include SUPPORT_INLINE in information
 	dump.

	* gen-idecode.c (print_run_until_stop_body): Only generate loop
 	termination test if creating idecode_run_until_stop.  Push the
 	loop termination test back into each alternative branch.

Wed Jul 24 15:47:09 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* gen-icache.c (print_icache_function): Have the cache function
 	always update the cache_entries semantic and address fields.

	* gen-idecode.c (print_idecode_switch_illegal): Include a break
 	when generating illegal instructions.  This was commented out
 	which is a hangover from looking a at switch statements generated
 	using indirect jumps.

Tue Jul 23 20:57:01 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* igen.c (print_my_defines): Replaces print_define_my_index.
        Print both a definition for MY_INDEX and MY_PREFIX.
	* gen-icache.c (print_icache_function): Adjust.
	* gen-idecode.c (print_jump_insn): Adjust.
	* gen-semantics.c (print_c_semantic): Adjust.

	* gen-support.c (gen_support_h): Add optional include to created
        support.h so that, like cpu, it is optionally inlined for all
        modules that include it.
	* inline.h, inline.c: Adjust so that support.[hc] is handled the
        same as cpu.[hc].

	* idecode_fields.h (LABEL, GOTO): Macro's that create a unique
        name for a lable and then branch to it.

	* ppc-instructions (convert_to_integer, Floating Round to
        Single-Precision, Floating Convert from Integer Doubleword): Use
        LABEL and GOTO instead of the recently added switch statements.

Wed Jul 24 14:02:42 1996  Andrew Cagney  <cagney@sawnoff.highland.com.au>

	* gen-idecode.c (print_run_until_stop_body): Too many rparen in
 	generated code.

Tue Jul 23 20:57:01 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* configure.in (--enable-sim-line-nr): Typo - sim_line-nr.
	* (--enable-sim-inline): Reorder patern matching of arguments so
        that SUPPORT=ALL_INLINE is reconized as *=* and not *_INLINE.

	* configure: rebuild.

Mon Jul 22 23:25:08 1996  Andrew Cagney  <cagney@highland.com.au>

	* configure.in (--enable-sim-hardware, --enable-sim-packages): New
        configuration options.  Let the user specify the packages or
        hardware devices that are to be included in the build.  Makes it
        possible for user packages to be specified.

	* Makefile.in (tmp-pk, tmp-hw): Just use the list of packages and
	hardware instead of checking it using ls.  configure.in should
	have taken care of any problems.
	(HW_SRC, HW_OBJ, PACKAGE_SRC, PACKAGE_OBJ): Set by configure.

Mon Jul 22 22:38:59 1996  Andrew Cagney  <cagney@highland.com.au>

	* psim.c (psim_options): Enter the argument to the memory size
        option directly into the device tree.  Was using atol() which is
        dangerously non portable.

Mon Jul 22 22:17:08 1996  Andrew Cagney  <cagney@highland.com.au>

	* configure.in (icache): Extend icache flag to include an insn
        option.  If specifyed the insn - aka instruction - is included in
        the instruction cache.  Make this the default.
	* configure: re-generate.

	* igen.c (main), igen.h: Add option -S - inSn - for specifying
        that the instruction should be included in the icache.

	* gen-icache.c (print_icache_body): If enabled, output code to put
        the instruction into the icache.
	(print_icache_struct): If enabled, add insn to the icache struct.

Mon Jul 22 20:46:12 1996  Andrew Cagney  <cagney@highland.com.au>

	* Makefile.in (BUILD_CFLAGS): Include -g when building the
        generators.

Mon Jul 22 20:00:25 1996  Andrew Cagney  <cagney@highland.com.au>

	* emul_generic.c (emul_add_tree_options): Was incorrectly setting
        the strict-alignment option when hardwired for non-strict
        alignment.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* gen-semantics.c: Make the my_index variable a macro MY_INDEX.

	* ppc-instructions: Adjust so that references are to MY_INDEX and
        not my_index.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* gen-idecode.c: Output the complete run_until_stop function
        instead of just the code to handle a single instruction issue.
	* : Have the generated idecode.c include inline.c (instead of psim.c).

	* std-config.h: Change psim.c so that it isn't inlined (as this is
        no longer needed).

	* psim.c (run_until_stop): Delete the old run_until_stop function
        instead calling the idecode_run and idecode_run_until_stop
        functions that gen-idecode.c is now creating.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* dgen.c: Maintenance - update to use new features found in lf.c.

	* filter_filename.c (filter_filename): Maintenance - make the
        string constant.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* debug.c (TRACE, ITRACE, DTRACE): Have GCC instead of CPP
        eliminate trace statements.

	* debug.c: Change trace format so that it is consistent
        (file:line-nr) with CC's error output.

	* gen-itable.c (itable_c_insn): Add the source file name and
        source line number to the instruction's informational entry.

	* debug.c (ITRACE): Use the itable (and my_index) to get the
        current instructions name and source line number.

	* gen-semantics.c, gen-icache.c: Adjust generated ITRACE calls to
        match new interface.

	* emul_bugapi.c (emul_bugapi_instruction_call): Adjust
        corresponding call to ITRACE so that it still matches.

	* idecode_expression.h (ALU_END, CR0_COMPARE): Use TRACE instead
        of ITRACE.  The CPP line directives would have previously set the
        line-nr and file name so ITRACE isn't needed.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* gen-idecode.c (print_jump_until_stop_body): New function and
        idecode generation option.  Instead of generating and calling
        separate functions containing the semantic and icache code
        generate a single monolythic function and use goto's (and GCC's
        indirect jump) to move between code blocks.

	* Makefile.in: Add sim_jump flag to those passed to igen.

	* configure.in: New option --enable-sim-jump (default disabled)

	* ppc-instructions: Eliminate any uses of labels and goto's.
        These result in duplicate declarations when a single flat function
        is being create.

	* ppc-opcode-jump: New file.  Set of opcode rules useful when
        testing jumping idecodes.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* gen-idecode.c: Optionally include the semantic code for an
        instruction in the function that is doing the decoding.

	* igen.c: Add option (-C) to generate semantics in the instruction
        decode functions.

	* configure.in (--enable-sim-icache): Accept an option list such
        as 1024,define.  Add a new choice to the list - semantic - which
        will cause igen to generate instruction decode functions that
        include the corresponding semantic code.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* configure.in: New option --enable-sim-line-nr (default enabled).
        Enable/disable the inclusion of CPP line directives in the
        generated files.  Such directives refer back to the source files
        used when generating the simulator code.

	* Makefile.in (sim_line_nr): Pass to igen.

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* igen.c (main): Revamp the options so that more letters are
        available.

	* configure.in: Adjust to match igen's revamped options

Sun Jul 21 21:18:05 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* Makefile.in (pk.h, hw.h): Rewrite depenencies for hw.h (etc) so
        that they use the same technique as igen (ie a dummy targets
        tmp-pk and tmp-hw are created).

Mon Jun 24 22:28:00 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* Makefile.in (BUILD_CFLAGS): Include WARNING_CFLAGS.

Wed Jun 19 21:45:28 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* ld-cache.[hc], ld-decode.[hc], ld-insn.[hc]: New files. Separate
        out the loading of each of the tables from the rest of igen.
	* Makefile.in: Adjust.
	* igen.c: Adjust.

	* gen-icache.[hc], gen-idecode.[hc], gen-itable.[hc],
        gen-model.[hc], gen-semantics.[hc]: New files. Separate out the
        code creating each separate set of generated files.
	* Makefile.in: Adjust.
	* igen.c: Adjust.

	* gen-support.[ch]: New files. Output the support functions (found
        in the ppc-instructions file) into a separate file.
	* Makefile.in: Add.
	* inline.h, inline.c: Add.
	* std-config.h: Add.

	* ld-cache.c: Re-design the cache table format.
	* ppc-cache-rules: Update to new format.

	* ld-decode.c: Re-design the decode table format.
	* ppc-opcode-simple: Update to new format
	* ppc-opcode-complex: Ditto
	* ppc-opcode-flat: Ditto

	* filter.h, filter.c: New files. Separate the opcode filter table
        reading code from the rest of igen.c.  Re-design the filter so that
	it works inclusivly not exclusivly.
	* igen.c: Remove the opcode filter table loading code.
	* Makefile.in (filter.o): Adjust
	* configure.in: Adjust filter flag so that default includes 32bit
	and floating point.
	* ppc-instructions: Clean up filter fields so that only in use
        entries are specifed (ie delete `be').

	* misc.c (name2i, i2name): New function.  Map between a string and
        an integer value.

Mon Jun 17 20:08:03 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* sim_calls.c (sim_close): If simulator not created, skip printing
        of run information.

Mon Jun 17 20:08:03 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* registers.c (register_description): Typo, insns not insn.

	* ppc-instructions (model_get_number_of_stalls): New model function,
	returns number of stalls for the specified processor.
	* psim.c (psim_read_register): Add call to new function
	model_get_number_of_stalls().

	* ppc-instructions (model_get_number_of_cycles): New model function,
	returns number of stalls for the specified processor.
	* psim.c (psim_read_register): Add call to new function
	model_get_number_of_cycles().

Fri Jun 14 00:11:56 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device_table.h: Don't pass the parent device into a devices
        create function.  This makes the create function consistent with
        the documentation.
	* device.c (device_template_create_device): Ditto
	* hw_pal.c (hw_pal_create): Ditto
	* hw_core.c (hw_core_create): Ditto
	* hw_vm.c (hw_vm_create): Ditto
	* hw_disk.c (hw_disk_create): Ditto
	* hw_nvram.c (hw_nvram_create): Ditto
	* hw_memory.c (hw_memory_create): Ditto
	* hw_cpu.c (hw_cpu_create): Ditto.

	* device.c (split_find_device): Allow a null initial parent device.
	(device_template_create_device): Ditto.

	* device.c (device_create_from): Make local (static) only used
        within device.c.
	* device_table.h: typedef device_callbacks moved here (from
        device.h) where it belongs.

	* hw_core.c: New file. Implements just the core device using the
        core object.

	* corefile.c: Moved all core device functions into the new
        hw_core.c file. core_device_create() disapears.

	* psim.c (psim_tree): Use device_tree_add_parsed() to create the
        core device.

Thu Jun 13 00:09:29 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_init.c: Correct typo in comment.

	* corefile.c (core_init): Remove any remaining references to a
        default map.
	(core_map_find_mapping): Ditto.

Wed Jun 12 22:30:32 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* corefile.c (core_init): Make function global so that other
        devices are able to use the full core object.

	* corefile.c (core_create, core_from_device): Break core_create
        into two functions.  The first creates a core object, the second
        returns the core object associated with a core device.

	* corefile.c (core_device_create): Use core_create to make the
        core object.

	* psim.c (psim_create): Use core_from_device() instead of
        core_create().

	* device.c (device_template_create_device): Make static as only
        needed by functions internal to device.c.

Fri Jun  7 23:47:18 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* ppc-opcode-test-2: Remove description of fields.
	* ppc-opcode-complex: Ditto
	* ppc-opcode-flat: Ditto
	* ppc-opcode-simple: Ditto
	* ppc-opcode-stupid: Ditto
	* ppc-opcode-test-1: Ditto
	* ppc-cache-rules: Ditto

	* igen.c: Add description of files as a comment at the front.

Wed Jun 26 12:50:33 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure.in: Check for whether the termios and termio
	structures are really defined, and whether or not, they define the
	c_line field.
	* configure: Regenerate.

	* Makefile.in ({,TERMIO_}CFLAGS): Add TERMIO_CFLAGS options set by
	configure.

	* emul_unix.c: Various changes to allow for building on systems
	with different termio and termios structures.  If host has both
	termio and termios, just use termios.  No longer include
	sys/ioctl.h.

Wed Jun 26 12:26:55 1996  Jason Molenda  (crash@godzilla.cygnus.co.jp)

        * Makefile.in (bindir, libdir, datadir, mandir, infodir, includedir,
        INSTALL_PROGRAM, INSTALL_DATA): Use autoconf-set values.
        (docdir): Removed.
        * configure.in (AC_PREREQ): autoconf 2.5 or higher.
        (AC_PROG_INSTALL): Added.
        * configure: Rebuilt.

Wed Jun  5 23:53:42 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* corefile.h: Rewrite documentation so that it can be extracted and
        converted into texinfo (and hence ready for translation into html,
        tex or nroff).
	* device.h: Ditto

Thu Jun  6 09:52:37 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* hw_disk.c (SEEK_SET): If SEEK_SET is not defined, define as 0.

Wed Jun  5 11:46:52 1996  Andrew Cagney  <cagney@puddin>

	* hw_disk.c: Include <unistd.h> if available.  Under SunOS, that
 	is the source of SEEK_SET.

Wed Jun  5 01:39:07 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* psim.c (psim_options): Correct type of dummy arguments being
        passed to a device_ioctl call.

	* hw_init.c (hw_data_init_data_callback): Adjust printf arguments.
	(write_stack_arguments): Ditto.
	* hw_trace.c: Instance callback entry no longer a table.

Wed Jun  5 01:39:07 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* emul_unix.c (do_unix_umask): Cast printf argument.
	(convert_to_linux_termios): Use LINUX_VSWTC not LINUX_VSWCH

Mon Jun  3 15:02:04 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* hw_init.c (update_for_binary_section): Abort if we find an
	.interp section, which indicates the need for shared libraries to
	be loaded.

Mon Jun  3 15:02:04 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* emul_unix.c (do_unix_{time,gettimeofday,getrusage}): Add support
	for time, gettimeofday, and getrusage system calls.
	({solaris,linux}_descriptors): Add new system calls.
	(do_get{,e}{uid,gid}): Use gid_t/uid_t types.
	(do_get{,p}pid): Use pic_t types.

	* configure.in (AC_TYPE_{GETGROUPS,SIGNAL}): Define.
	(AC_TYPE_{MODE,OFF,PID,SIZE,UID}_T): Define.
	* config{.in,ure}: Regenerate.

Mon Jun  3 23:19:57 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* emul_netbsd.c (emul_netbsd_create): Use the more specific names
        `ppc-elf' and `ppc-xcoff' for the stack-type.
	* emul_unix.c (emul_unix_create): Ditto.
	* emul_bugapi.c (emul_bugapi_create): Ditto.
	* hw_init.c: Reconize the new names.

	* emul_unix.c (do_unix_break): Adjust so that the updated ioctl
	call is used (no system parameter).

Sun Jun  2 11:21:17 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* emul_unix.{h,c}: New files to provide Solaris and Linux system
	call emulations.

	* Makefile.in (LIB_{SRC,OBJ}): Add emul_unix.{c,o}.
	(os_emul.o): Depend on emul_unix.h.
	(emul_unix.o): New dependency.

	* configure.in (--enable-sim-alignment): Add 0|default to mean set
	alignment to 0, which means use appropriate alignment for mode.
	(AC_CHECK_FUNCS): Add new functions needed by emul_unix.c.
	(AC_CHECK_HEADERS): Add new include files needed by emul_unix.c.
	* config.in: Regenerate.
	* configure: Regenerate.

	* emul_generic.c (emul_write2_status): New function to return
	results in r3 and r4 for Solaris system calls.
	(emul_do_system_call): If the system call is not support, but
	there is a string for the system call name, print out the string
	instead of the system call number.

	* emul_generic.h (emul_write2_status): Declare it.

	* emul_netbsd.c: Use /* */ around comment on #endif.

	* os_emul.c: Include emul_unix.h.
	(os_emulations): Add emulations for Solaris, and Linux.

	* psim.c (psim_usage): Add message about solaris, linux
	emulations.

Thu May 30 00:00:10 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_iobus.c: Tidy up notes so that they can be auto-extracted.

	* README: Correct PSIM's title

Wed May 29 23:50:26 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* basics.h: New global type object_disposition, used to indicate
        the status of objects when things are restarted.

Fri May 17 17:28:52 1996  Andrew Cagney  <cagney@benjimen.highland.com.au>

	* device_table.h: Change the interrupt descriptor structure so
        that it includes an additional member - an upper bound on the
        interrupts by that name.

	* device.c (device_interrupt_decode): Allow a range of interrupt
        ports (eg rst0 .. rst6) if the port descriptors bound is non zero.

	* device.c (device_tree_print_device): Include a list of valid
        interrupt ports when listing supported devices.

	* device.h, device.c (device_child_interrupt_*): Delete. Not used.

	* emul_generic.c (emul_add_tree_hardware): Modify the creation of
        the interrupt net so that it uses int0 .. intN.

Tue May 14 23:03:53 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.h, device.c (device_ioctl): Drop the system argument.
        Devices can not obtain this using the device_system() call.
	* device_table.h: Adjust accordingly.
	* hw_*.c: Adjust accordingly.
	* emul_netbsd.c (do_break): Adjust call to vm device accordingly.
	* psim.c (psim_options): Use a device_ioctl call to force the
        hw_trace device to update the trace options.
	* hw_trace.c: Replace the init function with an ioctl call.  Adjust
	doc accordingly.

	* psim.c (psim_init): Re-order initialization so that the
        os-emulation is initialized after the device tree.  Without this,
        os-emul's are not able to create instances or access properties
        that contain an instance handle.

	* device.h, device.c (device_add_*_property): Make these functions
        internal to device.c.  The user has access to the more generic
        device_tree_add_parsed function.  Differentiate between the initial
	and current value for each property.
	* (clean_device_properties): New function that deletes any
	properties created after the start of a simulation and restores
	the initial value of any others (ignoring ihandles).
	* (init_device_properties): (Re)Initialize any properties that
	contain ihandles. create

	* (device_tree_init): Include calls to clean the device tree's
        properties and then initialize them.  Document this in the device.h
	file.

Mon May  6 17:36:15 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* interrupts.c (decrementer_interrupt): Always pend a decrementer
        interrupt even if it is not yet possible to deliver it.

Wed May  1 12:26:51 1996  Andrew Cagney  <cagney@benjimen>

	* mon.h, mon.c (mon_get_number_of_insns): Make this externally
 	visable adjusting the arguments so that the interface is correct.
	(mon_print_info): Adjust calls.
	
	* registers.h, registers.c (register_description): Add phony
 	cycle, insn and stall registers.

	* psim.c (psim_read_register): Return nr of instructions for given
 	processor.

Tue Apr 30 22:09:09 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_htab.c: New file. Extract contents from disk_table.c.
        Contains a device that, during initialization will create a
        PowerPC htab in memory.
	* hw_register.c: New file. Extract contents from disk_table.c.
        Contains a device that, during initialization, will parse its
        property list and use that to initialize various processor
        registers (not target specific).
	* hw_vm.c: New file. Extract contents from disk_table.c.  Contains
        a device that handles accesses to invalid virtual memory addresses
        (in user mode).
	* hw_init.c: New file. Extract contents from disk_table.c.  Misc
        devices that can initialize memory from a file.
	* hw_trace.c: New file. Extract contents from disk_table.c.
        Configure trace options from property values.

	* Makefile.in (hw_htab.o, hw_register.o, hw_vm.o, hw_init.o,
        hw_trace.c): Add new device files.

	* device_table.c: Remove above code, now in separate independant
        files.

Fri Apr 26 00:00:07 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_disk.c: New file.  Disk and CDROM device.

	* Makefile.in (hw_disk.o): Add device hw_disk.c.

	* pk_disklabel.c: New file.  Implement the miss-named disk-label
        package.

	* Makefile.in (pk.h): Create the file pk.h that contains a list of all
	the packages.

	* Makefile.in (hw.h, hw.c): Add dependancy on Makefile so that
        they are re-created when the makefile is updated.

	* emul_generic.c (emul_add_tree_hardware): Add a disk device
        (below the iobus) to the device tree.  Include an ihandle of
	the disk as /chosen/disk.

	* emul_bugapi.c (emul_bugapi_create): Don't initialize the input,
        output and (new) disk handles yet.
	* (emul_bugapi_init): Initialize the input, output (and just added)
	disk ihandles here.
	* (emul_bugapi_do_diskio): New.  Performs disk i/o (well at least
	what I think the behavour is).
	* emul_bugapi.c (emul_bugapi_instruction_call): Add hook to disk
	i/o bug call.  For RETURN call, exit using gpr[3]'s status even
	though this isn't part of the spec - makes it possible for machine
	code to signal the aporting of a simulation run.

	* emul_chirp.c (chirp_emul_call_method): Add support for the
	claim/release methods.
	* (chirp_emul_exit): Add an optional exit status argument to
	the exit method.  Makes it possible for chirp emul simulations
	to abort upon an error.
	* device.h, device.c (device_instance_claim,
        device_instance_release): New methods for claiming and releasing
	memory.
	* hw_memory.c: add claim and release memory methods.
	* hw_*: Use the claim memory method when allocating physical
	memory.

Thu Apr 18 23:38:10 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_nvram.c (hw_nvram_update_clock): Use the current not previous
        time when updating the clock.

	* hw_nvram.c: Tidy up documentation

Fri May 24 10:08:10 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure.in (AC_STRUCT_ST_{BLKSIZE,BLOCKS,RDEV}): Use these
	macros to determine whether or not the appropriate st_<xxx> fields
	exist in the stat structure.
	(AC_CHECK_FUNCS): Check for all unix system calls used, except for
	the real basic ones like open, read, write, etc.
	* config{.in,ure}: Regenerate.

	* emul_netbsd.c: Add support for missing system calls, and/or
	missing stat fields.
	(MAXPATHLEN): Undefine if including unistd.h, since sys/param.h
	might define it.

	* hw_pal.c (WITH_STDIO): Redefine if O_NDELAY, F_GETFL, or F_SETFL
	are not defined.
	(scan_hw_pal): Do not cause syntax error if O_NDELAY, F_GETFL, or
	F_SETFL not defined.

Tue May 21 17:24:45 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* emul_netbsd.c (write_stat): Don't convert st_blocks unless the
	host is netbsd.

Thu May 16 10:56:45 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure.in (AC_CHECK_HEADERS): Add sys/ioctl.h.
	* config{.in,ure}: Regenerate.
	* emul_netbsd.c: If HAVE_SYS_IOCTL_H is not defined, don't include
	sys/ioctl.h.

Tue May  7 17:28:12 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* hw_pal.c (hw_pal_instance_read_callback): Remove unused
	variable.

	* misc.c ({,target_}a2i): Rewrite to not use strtoul.

	* Makefile.in ({spreg,misc}.o): Add dependency on .c file.
	({i,d}gen): Don't link in liberity.  Use BUILD_LIBS instead of
	LIBS.

Mon May  6 11:31:43 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* hw_pal.c (hw_pal_instance_read_callback): If using stdio, use
	fgets to read line.  If not using stdio, do a simple blocking read
	of len bytes.

Fri May  3 15:07:42 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* Makefile.in: Correctly build simulator for build machine != host
	machine.

Tue Apr 30 18:46:05 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* configure.in (--enable-hostendian): Rework so the default uses
	the AC_C_BIGENDIAN results.  Only run AC_C_BIGENDIAN if not cross
	compiling.
	* configure: Regenerate.
	
	* sim-endian.h: Add more tests for host endian to support more
	platforms in a cross compilation environment.

Wed Apr 17 14:38:06 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* hw_pal.c ({scan,write}_hw_pal): If WITH_STDIO == DO_USE_STDIO,
	use stdio, instead of unpended read/printf_filtered.
	(hw_pal_instance_write_callback): If WITH_STDIO == DO_USE_STDIO,
	flush stdout after writing the characters.

	* options.c (print_options): Print out WITH_STDIO.

	* Makefile.in (STDIO_CFLAGS): Pass on result of @sim_stdio@
	configuration variable.
	(CONFIG_CFLAGS): Include STDIO_CFLAGS.
	(hw.{c,h}): Allow for source dir != build dir, and for HW_SRC
	files to contain directory pieces.

	* std-config.h (DO{,NT}_USE_STDIO): New flags for whether we
	should use stdio for console input.
	(WITH_STDIO): If not defined, define as DONT_USE_STDIO.

	* configure.in (--enable-sim-stdio): Add new switch to control
	whether stdio is used for console I/O.
	* configure: Regenerate.

	* interrupts.c (external_interrupt): Declare it to be
	INLINE_INTERRUPTS, not INLINE_CPU.

Mon Apr 15 23:30:56 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* events.c (insert_event_entry): Allow events to be scheduled
        *NOW* (at delta time 0).  Add assertions to clarify behavour of
        event queue.

	* events.c (update_time_from_event): New function. Calculates the
        number of ticks from the next event.  Use this.

Sun Apr 14 21:39:45 1996  Andrew Cagney  <cagney@highland.com.au>

	* emul_netbsd.c (do_break): Return 0 if success (instead of
        adjusted break).

	* device_table.c (vm_ioctl_callback): Don't return adjusted break
        (isn't needed).

Sun Apr 14 21:32:41 1996  Andrew Cagney  <cagney@highland.com.au>

	* device_table.h: Change type of the device ioctl so that it
	returns an int (status).
	* device.h (device_ioctl): Ditto.
	* device.c (device_ioctl): Ditto.

	* device_table.c (stack_ioctl_callback): Return 0 status.
	(vm_ioctl_callback): Ditto

Sat Apr 13 00:00:24 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* emul_netbsd.c (do_read): Correctly set the return value.
	(do_getpid): Ditto.
	(do_getuid): Ditto.
	(do_geteuid): Ditto.
	(do_dup): Ditto.
	(do_getegid): Ditto.
	(do_getgid): Ditto.
	(do_sigprocmask): Ditto.
	(do_umask): Ditto.
	(do_dup2): Ditto.
	(do_gettimeofday): Ditto.
	(do_getrusage): Ditto.
	(do_fstat): Ditto.
	(do_stat): Ditto.
	(do_lseek): Ditto.
	(do___sysctl): Ditto.

Fri Apr 12 20:56:47 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device_table.c (vm_ioctl_callback): Don't access the processor
        registers directly, instead leave it to the caller to handle this.

	* emul_netbsd.c (do_break): Which calls vm_ioctl_callback to
        perform a break.  Pass in the new break value and set the
        registers according to the result.

	* emul_generic.c (emul_write_status): Change so that r3 contains
        either status or errno and failure is indicated by SO.

Thu Apr  4 23:03:38 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* emul_bugapi.c (emul_bugapi_create): More strict check of OEA
        address.

Thu Apr  4 20:58:05 1996  Andrew Cagney  <cagney@highland.com.au>

	* interrupts.h (interrupts): New structure contains state of
        pending interrupts.

	* cpu.c (cpu_interrupts): New function.  Pending interrupt status
        in the cpu and grant access to it.  Add interrupts to cpu
        structure.

Fri Mar 29 22:09:25 1996  Andrew Cagney  <cagney@highland.com.au>

	* device.c (device_tree_add_parsed): Check that the creation of a
        device instance worked before using it.

	* psim.c (psim_halt): Remove cia argument from psim_halt.  This
        function does not save the CIA so do not pass it in.

Fri Mar 29 21:30:56 1996  Andrew Cagney  <cagney@highland.com.au>

	* hw_pal.c (hw_pal): Merge the halt and icu and console devices
        found in device_table.c into a single hack pal.

	* device_table.c (halt, icu, console): Delete.

	* Makefile.in (hw_pal.o): New dependency.

	* emul_generic.c (emul_add_tree_hardware): Re-arange device tree
        so that it uses the pal instead of the icu/halt/console devices.
        Wire the pal's interrupt ports up to the cpu nodes.

Fri Mar 29 20:17:17 1996  Andrew Cagney  <cagney@highland.com.au>

	* hw_iobus.c (hw_iobus_attach_address_callback): Move from
        device_table.c to here.

	* Makefile.in (hw_iobus.o): New dependency.

Fri Mar 29 12:17:58 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* emul_bugapi.c (_os_emul_data): Add fields for output, input.
        (emul_bugapi_create): Create input, output from /chosen/stdin and
        /chosen/stdout.
        (emul_bugapi_do_{read,write}): Switch to use device_instance
        interface.
        (emul_bugapi_instruction_call): Change calls to
        emul_bugapi_do_{read,write} to pass device instance argument.

Tue Mar 26 14:57:58 1996  Michael Meissner  <meissner@tiktok.cygnus.com>

	* igen.c (idecode_switch_end): Fix 2/26 change so that an extra
        default is not written out if a default was already written.

	* psim.c (psim_{read,write}_register): Use sizeof unsigned_8 to
        size cooked_buf, not sizeof natural_word, since floating point
        registers are 8 bytes.

Mon Mar 25 22:07:13 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* configure: Regenerate with autoconf 2.9.

Thu Mar 21 00:14:26 1996  Andrew Cagney  <cagney@highland.com.au>

	* device_table.h: Always include string headers.

Thu Mar 21 00:06:09 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* main.c (error): Be careful to not try to print out statistics
        when the simulation was never created.

Sun Mar 17 22:40:57 1996  Andrew Cagney  <cagney@highland.com.au>

	* basics.h: Move the event queue's definition to here so that it
        can be refered to globally with out importing all of events.h.

	* psim.h, psim.c (psim_event_queue): New function.  Grant access
        to the simulation event queue.  Will make this the single point of
        access (there is after all only one event queue in the
        simulation).

	* cpu.c (cpu_create): Use psim_event_queue to obtain the event
        queue instead of it being passed in.  No longer allow access to
        the cpu's copy of the event queue.

Sun Mar 17 22:40:57 1996  Andrew Cagney  <cagney@highland.com.au>

	* events.h, events.c (event_handler): Remove event_queue from
        arguments passed to an event handler.  That argument is redundant
        - the `data' should refer to a data structure that contains the
        event queue if queing is needed.

	* cpu.c (cpu_decrement_event): adjust

	* events.c (event_queue_process): adjust

Sun Mar 17 22:40:57 1996  Andrew Cagney  <cagney@highland.com.au>

	* device.h, device.c (device_system): New, returns a handle for
        the system given the device.

	* device.c (device_address_init): Store a pointer back to the
        system in each devices node.

	* device_table.h: Don't pass `system' into each device when it is
        being initialized, this is now available using device_system(me).

	* device.c (device_address_init, device_data_init): Adjust.

	* hw_cpu.c, hw_nvram.c, hw_memory.c, hw_eeprom.c, device_table.c:
        Adjust.

Sun Mar 17 22:40:57 1996  Andrew Cagney  <cagney@highland.com.au>

	* interrupts.c (decrementer_interrupt, external_interrupt):
        Remember that an interrupt wasn't delivered so that it can be
        tried again later.

	* interrupts.c (check_masked_interrupt): New function.  (re)
        checks for the posibility that a recent change to the MSR may have
        made it possible to deliver an interrupt that was previously
        masked be the EE bit.

	* ppc-instructions (mtmsr, mfmsr, rfi): Check for posibility of
	a pending interrupt being delivered using check_masked_interrupt().

	* cpu.c (cpu_decrement_event): Just call decrementer_interrupt()
        leaving it to that module to handle both interrupt synchronization
        and masking.

	* cpu.c (struct _cpu): remove variables that were going to record
        pending decrementer and external interrupts.

Sun Mar 17 22:40:57 1996  Andrew Cagney  <cagney@highland.com.au>

	* hw_cpu.c, hw_cpu.h: New files.  Implement a device that sits
        between the interrupt controller and the simulators internal
        processor model.  Maps device interrupts onto the processor
	interrupt function calls.

Mon Mar  4 06:06:54 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* hw_nvram.c: NVRAM device that includes a real-time clock that is
        updated each second.

Mon Mar  4 04:18:50 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.h (attach_type): Remove attach_default type address
        spaces.  Will replace with levels of callback memory.

	* corefile.h, corefile.c (new_core_mapping), corefile.c
        (core_map_attach): Replace default attach with a layerd callback
        approach.

Sun Mar  3 03:58:46 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.c (split_property_specifier): ensure that only a single
        property is found.
	(split_value): New function, parses the value part of a device
	spec.

	* device.c (device_tree_add_parsed): Use the interrupt conversion
        functions to determine the interrupt port numbers.

	* device_table.h: Add table that maps between an interrupts
        symbolic name and its port number.

	* device.h, device.c (device_interrupt_decode,
        device_interrupt_encode): new functions use the recently added
        interrupt port name/number tables to perform conversion.

Sun Mar  3 03:23:59 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.h, device.c (device_set_array_property,
        device_set_boolean_property, device_set_ihandle_property,
        device_set_integer_property, device_set_string_property): New
        functions - allow the value of a given property to be changed.

	* device.h, device.c: Re-order declaration and definition of
        property functions.

Sun Mar  3 03:10:22 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* device.c (device_tree_print_device, device_tree_add_parsed):
        Remove references to phandle properties.

Wed Feb 28 00:43:07 1996  Andrew Cagney - aka Noid  <cagney@highland.com.au>

	* Makefile.in (corefile.o): missing dependency on device_table.h
        etc.

Tue Feb 27 23:59:35 1996  Andrew Cagney - aka Noid  <cagney@highland.com.au>

	* device_table.h: Revamp device init callbacks so that they are a
        sub structure.
	* device.c (device_init_data, device_init_address): If an init
        callback is NULL assume it should do nothing.
	* device_table.c (ignore_device_init, unimp_device_init): delete
        as redundant.
	* device_table.c, hw_memory.c: adjust.

	* (io): ditto.
	* (dma): ditto.
	* (device_instance): ditto.
	* (ioctl): ditto.
	* (address nee config_address): ditto.
	* (interrupt): ditto.

Mon Feb 26 21:11:20 1996  Andrew Cagney - aka Noid  <cagney@highland.com.au>

	* igen.c (idecode_switch_end): Output a default entry when the
        switch statement is perfect.  Firstly stops GCC complaining about
        an incomplete switch and secondly it will be eliminated by a good
        compiler any way.

Mon Feb 26 22:47:15 1996  Andrew Cagney - aka Noid  <cagney@highland.com.au>

	* Makefile.in (hw.h, hw.c): New targets. Create from the list of
        hw_*.c files. hw.h declares a device descriptor table for each hw
        device while hw.c lists those tables in a form suitable for the
        construction of a top leveltable in device_table.c.

	* Makefile.in (device_table.o): now depends on hw.c a generated
        table of hw.

	* device_table.c (device_table): Re-arange the table of devices so
        that two levels are possible.  Make use of hw.c.
	* device_table.h: ditto.

	* device.c (device_template_create_device): Handle new two level
        device lookup table.
	* device.c (device_usage): ditto.

Mon Feb 26 22:24:00 1996  Andrew Cagney - aka Noid  <cagney@highland.com.au>

	* device_table.c: Delete the memory device (moved to hw_memory.c).

	* hw_memory.c: New file.  Just an OpenBoot memory device.

Wed Jan 17 21:47:34 1996  Andrew Cagney  <cagney@highland.com.au>

	* device.c (device_init_address): New.  Split initialization into
        two stages, address and address spaces
	* device.c (device_init_data): New. ... and data or other work.
        With out this, devices try to modify memory before it as been
        attached.

	* device.c (device_tree_init): Update to perform staged
        initialization.

	* device.c (device_init): Delete.

Wed Jan 17 21:43:09 1996  Andrew Cagney  <cagney@highland.com.au>

	* device_table.c (data_*): Rewrite to make heaver use of property
        nodes. Allow initialization by different data types.
	* device_table.c (htab_* pte_*): Rewrite to use properties.

	* emul_chirp.c (emul_chirp_create): Use
	* emul_bugapi.c (emul_bugapi_create): Ditto
	* emul_netbsd.c (emul_netbsd_create): Ditto

Wed Jan 17 21:24:50 1996  Andrew Cagney  <cagney@highland.com.au>

	* emul_generic.c (emul_add_tree_options): Annotate existing tree
        with options that haven't yet been specified.
	* emul_generic.c (emul_add_tree_hardware): Annotate existing tree
        with demo devices and properties.

	* emul_chirp.c (emul_chirp_create): Update to use new
        device_tree_add_parsed call and additional information now
        included in the device tree.  Use emul_add_tree* functions to add
        any missing details.
	* emul_bugapi.c (emul_bugapi_create): Ditto
	* emul_netbsd.c (emul_netbsd_create): Ditto

Wed Jan 17 21:18:27 1996  Andrew Cagney  <cagney@highland.com.au>

	* device.c (device_instance_create): New. Create/delete and
        operate on instances of a device.
	* device.c (device_instance_delete): Ditto
	* device.c (device_instance_read): Ditto
	* device.c (device_instance_write): Ditto
	* device.c (device_instance_seek): Ditto
	* device.c (device_instance_data): Ditto
	* device.c (device_instance_name): Ditto
	* device.c (device_instance_path): Ditto

	* emul_chirp.c (chirp_emul_open): Implement using device_instance.
	* emul_chirp.c (chirp_emul_close): Ditto
	* emul_chirp.c (chirp_emul_read): Ditto
	* emul_chirp.c (chirp_emul_write): Ditto
	* emul_chirp.c (chirp_emul_seek): Ditto

	* emul_chirp.c (chirp_read_t2h_args): Read arguments from device.
        Being careful to convert all from target to host byte order.
	* emul_chirp.c (chirp_write_h2t_args): Converse.

Wed Jan 17 20:07:15 1996  Andrew Cagney  <cagney@highland.com.au>

	* device.c (device_tree_add_parsed): New.  Rewrite code to add
        devices to the device tree so that a single printf style function
        is used.

	* device.c (device_tree_add_*): Delete. Replaced by above.

	* device.c (split_device_specifier): Functions to manipulate a
        device specifier (path) breaking it into its components
	* device.c (split_property_specifier): Ditto
	* device.c (split_device_name): Ditto
	* device.c (split_find_device): Ditto

	* device.c (scan_*): Delete

	* device.c (device_tree_find_device): Rewrite to use above.
	* device.c (device_add_property): Ditto

Wed Jan 17 19:51:56 1996  Andrew Cagney  <cagney@highland.com.au>

	* psim.c(psim_options): Parse the psim options, installing their
        value in the device tree.  Options are now first entered into a
        device tree and then extracted out again when needed.  This allows
        greater flexability in configuration.

	* psim.c (psim_tree): Returns a basic device tree ready for
        parsing by psim_options.
	* psim.c (psim_usage): New.  Give usage to varing levels of detail
        according to the verbosity.  In turn output device and trace
        usage.

	* main.c (main): Update to use new system
	* sim_calls.c (sim_open, sim_do_command): Ditto

	* psim.c (psim_options): Add `r' option - ram size.
	* psim.c (psim_options): Add `o' option - openboot tree entry.
	* psim.c (psim_options): Add `h'/`H' options - more help.

	* debug.c (trace_usage): Add more detailed help.
	* device.c (device_usage): New. Output help including a list of
        the devices currently available in the device table.
	* device_table.c: Add usage operator to each device.

	* corefile.c (core_create, core_device_create): Adjust so that the
        core device is created earlier for psim_tree().  Core can later be
        created from it.

	* psim.c (psim_create): Update to handle above way of creating
        things.  Extract all information from the device tree.

	* device_tree.c (trace_*): New device node, its properties are
        used to set the value of the trace options.  Init this device (in
        psim_options) when ever the options are updated.

Wed Jan 17 19:46:07 1996  Andrew Cagney  <cagney@highland.com.au>

	* debug.h: Add trace_print_info, trace_print_device_tree and
        trace_dump_device_tree.  The first is a replacement for the
        variable `print_info' found in main.c and sim_calls.c.  The latter
        two enable the dumping of the entire device tree.

	* debug.c: Add to trace_description table.

	* main.c (main): Use above trace instead of local variable
	* sim_calls.c (sim_close): Ditto

	* device.c (device_tree_print_device): New.  Prints the device
        tree in a format that is consistent with what can be parsed by the
        device tree load from file code.

	* psim.c (psim_create): Dump device tree if enabled. If nump
        selected, exit psim immediatly.

Wed Jan 17 19:36:52 1996  Andrew Cagney  <cagney@highland.com.au>

	* corefile-n.h (core_map_read_N): When mapping from an address to
        a device, do not subtract the devices base.  The device its self
        can do this.  Brings the behavour into line with OpenBoot.
	* corefile-n.h (core_map_write_N): Ditto
	* corefile.c (core_map_read_buffer): Ditto
	* corefile.c (core_map_write_buffer): Ditto

	* device_table.c (console_io_read_buffer_callback): Adjust to
        handle biased address.
	* device_table.c (console_io_write_buffer_callback): Ditto

Wed Jan 17 18:36:09 1996  Andrew Cagney  <cagney@highland.com.au>

	* device.c (attach_device_interrupt_edge): New. Interrupt model
        did not allow interrupts to be wired up as a general net (edges).
        Re-implement so that interrupt events can be passed to multiple
        controllers and interrupt controllers can further propogate
        interrupt events.

	* device.c (attach_device_interrupt_edge) : New, Ditto
	* device.c (detach_device_interrupt_edge) : New, Ditto
	* device.c (clean_device_interrupt_edges) : New, Ditto
	* device.c (device_interrupt_event) : New, Ditto
	* device.c (device_interrupt_attach) : New, Ditto
	* device.c (device_interrupt_detach) : New, Ditto
	* device.c (device_child_interrupt_attach) : New, Ditto
	* device.c (device_child_interrupt_detach) : New, Ditto

	* device.c (device_attach_interrupt) : Delete old
	* device.c (device_detach_interrupt) : Delete old
	* device.c (device_interrupt) : Delete old
	* device.c (device_interrupt_ack) : Delete old

	* device_table.c (unimp_*) : Update to match
	
        * device_table.c (icu_io_write_buffer_callback) : Update to use
        interface.
	* device_table.c (icu_interrupt_event_callback) : Ditto

Wed Jan 17 18:18:40 1996  Andrew Cagney  <cagney@highland.com.au>

	* device.c (external_to_device) : New function that provides a
        standard mapping between a devices internal representation (a
        pointer) and its external (or what is passed to a client)
        representation (a phandle).  Implement using the cap object
        attached to the root node.

	* device.c (device_to_external) : Ditto
	* device.c (external_to_device_instance) : Ditto but for ihandle
        and device instance.
	* device.c (device_instance_to_external) : Ditto

	* Makefile (device.o): Add dependency on cap.

	* emul_chirp.c (struct _emul_chirp_data) : Elimate use of cap. Code
        needing to translate between internal and external representations
        changed to use the external_to_device et.al. device operations.
	* emul_chirp.c (chirp_emul_*) : Ditto

	* Makefile (emul_chirp.o): Remove dependency on cap

Sat Jan  6 10:13:26 1996  Andrew Cagney - aka Noid  <cagney@highland.com.au>

	* emul_chirp.c (map_over_chirp_note): Tighten up (and fix) checks
        on OpenBoot note section.

Fri Jan  5 20:28:53 1996  Andrew Cagney  <cagney@hignland.com.au>

	* emul_generic.c (emul_write_buffer): Use vm faulting byte
 	read/write calls for buffer transfers.  This will cause a fault to
 	occure if the transfer fails.  CHRP catches the fault while the
 	others suffer the consequences.
        (emul_read_buffer): Ditto.
        (emul_write_word): Ditto.
        (emul_read_word): Ditto.
        (emul_read_string): Ditto.

Fri Jan  5 18:55:34 1996  Andrew Cagney  <cagney@highland.com.au>

	* emul_chirp.c (emul_chirp_create, emul_chirp_instruction_call),
 	emul_generic (emul_blr_instruction): Use a real blr instruction to
 	return from a client service call.

	* emul_chirp.c (services): Add all OpenBoot services to table.

	* emul_generic.h, emul_bugapi.c (emul_bugapi_create), emul_chirp.c
 	(emul_chirp_create) : Use names instead of numbers for
 	instructions being stored in memory.

Fri Jan  5 18:52:28 1996  Andrew Cagney  <cagney@highland.com.au>

	* Makefile.in (maintainer-clean): Remove .log, core and *.core
 	(From NetBSD) files.

Wed May 29 22:57:40 1996  Andrew Cagney  <cagney@kremvax.highland.com.au>

	* ChangeLog.00, ChangeLog: ChangeLog from gdb-4.16 becomes
        ChangeLog.00