changelog

这个是LINUX下的GDB调度工具的源码

Thu Jan 23 09:07:26 1997  Andrew Cagney  <[e-mail]>
	
	* Some devices support removable media.  Add hooks to the disk
 	device so that it supports this.
	
	* device.c (device_add_string_array_property,
 	device_find_string_array_property): New functions, manipulate
 	properties containing an array of strings.
	(device_find_string_property): Allow a string array.
	(device_init_static_properties): Update.
	(device_init_runtime_properties): Update.

	* hw_disk.c (hw_disk_ioctl): Add ioctl for changing the disk
 	media.  If no file image is specified, use the next one in the
 	image property list.
	(hw_disk_init_address): Change the file property so that it is a
 	string array - use the first entry for the initial file image.

	* tree.c (print_string_aray_property): New function - print a
 	string array.
	(print_properties): Adjust.
	(print_string): Write a string, handling double quotes.

	* device.h: Define an ioctl to `change-media' with an optional new
 	media image.
	
	* hw_disk.c: Allow floppy disk devices to be specified.

	* psim.c (psim_command): New function, parse more complex psim
 	commands such as "change-media" and "trace".
	* sim_calls.c (sim_do_command): Use.

Wed Jan 22 09:38:33 1997  Andrew Cagney  <[e-mail]>

	* For expressions like (RA == 0) that are entered in to the cache
 	as RA_is_0. If possible generate the result of the expression so
 	that the compiler gets a better chance of eliminating dead
 	branches.

	* gen-icache.c (print_icache_extraction): For a cache entry of
 	the form <name>_is_<const> where it is a boolean field, generate
 	the result of the expression instead of the expression its self.
	(print_icache_body): Remove code that was looking for *_is_0 and
 	then generating corresponding definitions.

	* gen-icache.c (print_icache_struct): If there is no cache, do not
 	output expressions in idecode.h file.
	
	* gen-icache.c (print_icache_body): Output them here.
	
	* ppc-opcode-complex: Clarify constant values for SPR==LR register
 	expansion.

	* ppc-cache-rules (RA_is_0, SPR_is_256): Two new cache entries.

Wed Jan 22 12:24:52 1997  Andrew Cagney  <[e-mail]>

	* The code that put values in and extracted values from the cache
 	was too compilicated.  The cache table did not allow values to be
 	computed from cache entries.  #defines could only be used when a
 	cache was present, remove the restriction.

	* ld-cache.h, ld-cache.c: Add a new cache entry type - SCRATCH.  A
 	scratch variable is defined when a cache entry is beinf
 	filled. Change the definition of a COMPUTE variable to be defined
 	when the cache entry is being used.
	* gen-icache.c: Update.
	
	* ld-cache.h, ld-cache.c: Change field names so that their meaning
 	is more obvious.  old_name->field_name, new_name->derived_name.
	* gen-icache.c: Update
	
	* gen-icache.h, gen-icache.c (print_icache_body): Make the three
 	different types of cache code - put into cache, extract from
 	cache, no cache - an explicit argument to print_icache_body.
	* gen-icache.c (print_icache_extraction): Ditto.
	
	* gen-semantics.c (print_c_semantic): Update use.
	* gen-idecode.c (print_jump_insn): Update use.
	* gen-icache.c (print_icache_function): Update use.

	* igen.c (main): Change 'R' option so that it does not force the
 	cache.

	* configure.in (enable-sim-icache): Clarify description.  Make
 	#define one of the defaults regardless of the cache.  Probably
 	should revamp and add a separate option.

Tue Jan 21 13:26:10 1997  Andrew Cagney  <[e-mail]>

	* pk_disklabel.c (block_is_fdisk): Tidy up traces - use dos
 	partition numbering.
	(pk_disklabel_create_instance): Partition 1..4 are valid - not
 	1..3.
	(is_iso9660): New function, verify a CD9660 File system.
	(pk_disklabel_create_instance): Start expanding so that active
 	partition selection is supported.

Mon Jan 20 11:20:15 1997  Andrew Cagney  <[e-mail]>

	* The cap object was retaining a reference to the instance of a
 	device after it was deleted. Instead add and remove cap's from the
 	cap db as they are created and deleted.  This ensuring that a
 	capibility is only used during the lifetime of the corresponding
 	object.
	
	* cap.h, cap.c: Correct cap type - was signed32 should be
 	signed_cell.
	
	* cap.c (cap_add, cap_remove): New methods for cap object that
 	allow the explicit addition and removal of internal objects that
 	the cap knows about.
	
	* cap.c (cap_init): Rewrite.  Verify that the only objects
 	remaining in the cap data base are those that were entered first.
  	Thse objects will be the permenant ones.
	* device.c (device_init_address): Remember to initialize the cap
 	database.
	
	* device.c (device_create_instance_from): Explicitly add device
 	instances to the cap database.  Simplify create code.
	(device_instance_delete): Explicitly remove device instances from
 	the cap database.
	
	* device.c (device_create_from): Explicitly add a device to the
 	cap data base.
	
	* device.c (device_create_from): Always set the cap members.

	* hw_disk.c: Output the instance when tracing.
	
Sun Jan 19 16:44:29 1997  Andrew Cagney  <[e-mail]>

	* tree.c (split_device_specifier): Add support for aliases when
 	looking up a device. Now needs a device as an argument.
	(split_property_specifier): Ditto.

Sun Jan 19 15:28:23 1997  Andrew Cagney  <[e-mail]>

	* The memory "claim" and "release" methods take an address and
 	size as arguments.  These may be multi cell values. Initially fix
 	the memory code so that they check/detect this.  Leave the
 	adjustment of any clients to later.
	
	* hw_memory.c (hw_memory_instance_claim,
 	hw_memory_instance_release): Handle multi-cell memory devices.
	
	* hw_memory.c (hw_memory_instance_claim): Be tolerant towards the
 	release of memory regions that were not claimed.

Fri Jan 17 12:01:07 1997  Andrew Cagney  <[e-mail]>

	* device.h, device.c (device_instance_call_method): Correct return
 	type - can return either 0 or -1, hence should be a signed type.
	* device_table.h: Ditto.
	
	* hw_memory.c (hw_memory_instance_claim,
 	hw_memory_instance_release): Update.
	* hw_disk.c (hw_disk_max_transfer, hw_disk_block_size,
 	hw_disk_nr_blocks): Ditto.
	
Fri Jan 17 11:50:13 1997  Andrew Cagney  <[e-mail]>

	* emul_chirp.c (chirp_emul_claim): Implement using the "claim"
 	method belonging to "/chosen/memory".
	(chirm_emul_release): Ditto.
	
	* Makefile.in (LIB_INLINE_SRC): Remove emul_* from list of files
 	that are inlined.  These modules are called via a table and are
 	not made inline.

	* hw_init.c (update_for_binary_section): Fix failure to allocate
 	memory used by the binary in real-mode executions. If "claim"
 	property is present, allocate memory from the "/chosen/memory"
 	device.

	* emul_chirp.c (emul_chirp_create): Specify that memory should be
 	claimed when loading a real image.

	* hw_memory.c (hw_memory_instance_claim): Don't page align memory
 	allocations.

	* hw_memory.c (hw_memory_instance_release): Avoid infinite loop
 	when merging adjacent memory chunks.

Thu Jan 16 08:51:25 1997  Andrew Cagney  <[e-mail]>

	* vm.h (vm_data_map_read_buffer, vm_data_map_write_buffer): Add
 	optional PROCESSOR & CIA args so that this routine also abort an
 	access.

	* vm_n.h (vm_data_map_read_N, vm_data_map_write_N): For a
 	miss-aligned access when a transfer fails abort.
	
	* emul_bugapi.c (emul_bugapi_do_write): Use emul_read_buffer
 	instead of the vm_read_buffer.
	* emul_netbsd.c (do_write): Ditto.
	* emul_unix.c (do_unix_write): Ditto.

Wed Jan 15 14:38:25 1997  Andrew Cagney  <[e-mail]>

	* configure.in (--enable-sim-jump): Default is NULL and not -E.
	* configure: Regenerate.
	
	* basics.h (__attribute__): Enable attributes if GCC >= 2.6.
	(UNUSED): Only enable UNUSED if GCC >= 2.7.
	
	* gen-icache.c (print_icache_extraction): Print UNUSED macro
 	instead of explicit __unused__ attribute.
	(print_icache_body): Ditto.
	* idecode_expression.h (FPSCR_BEGIN): Use UNUSED.

Wed Jan 15 13:54:50 1997  Andrew Cagney  <[e-mail]>

	* cpu.h, cpu.c (cpu_synchronize_context): Add CIA argument as
 	reference point.

	* vm.c (vm_synchronize_context): Add PROCESSOR and CIA as
 	arguments so that there is a reference point for recovery.
	(vm_synchronize_context): Pass processor+cia for errors.
	(om_unpack_sr): Ditto.
	(om_unpack_srs): Ditto.
	* vm.c (vm_create): Review error messages.

	* vm.c: Include "cpu.h" so that cpu_error is visible.

	* ppc-instructions (Return From Interrupt): Pass CIA.
	(Instruction Synchronize): Ditto.
	* psim.c (psim_init): Ditto.

Wed Jan 15 12:25:11 1997  Andrew Cagney  <[e-mail]>

	* cpu.h, cpu.c (cpu_error): Aborts simulation with error message,
 	but also saves current processor state.
	
	* basics.h: Move #include <stdarg.h> to here from device_table.h.

	* interrupts.c (perform_oea_interrupt): Use.  No longer loose CIA
 	when simulation aborted.
	(program_interrupt): Ditto.
	(floating_point_unavailable_interrupt): Ditto.
	(alignment_interrupt): Ditto.
	(floating_point_assist_interrupt): Ditto.
	(perform_oea_interrupt): Ditto.
	(machine_check_interrupt): Ditto.

Tue Jan 14 12:19:10 1997  Andrew Cagney  <[e-mail]>

	* ppc-instructions (Move from Special Purpose Register): Support
 	move from DEC.

Mon Jan 13 16:58:12 1997  Andrew Cagney  <[e-mail]>

	* debug.h, debug.c: Add "interrupts" trace option.

	* interrupts.c (data_storage_interrupt): Add tracing.
	(machine_check_interrupt): Ditto.
	(instruction_storage_interrupt): Ditto.
	(alignment_interrupt): Ditto.
	(program_interrupt): Ditto.
	(floating_point_unavailable_interrupt): Ditto.
	(system_call_interrupt): Ditto.
	(floating_point_assist_interrupt): Ditto.
	(deliver_hardware_interrupt): Ditto.
	
	* interrupts.c (program_interrupt): For UEA mode, halt the
 	processor - so that the current state is saved - instead of
 	aborting.
	(floating_point_unavailable_interrupt): Ditto.
	(floating_point_assist_interrupt): Ditto.

Thu Jan  2 09:10:41 1997  Andrew Cagney  <[e-mail]>

	* interrupts.c (perform_oea_interrupt): Halt rather than abort on
 	a double interrupt.

Wed Jan  1 22:54:52 1997  Andrew Cagney  <[e-mail]>

	* ppc-instructions (Store Multiple Word, Load Multiple Word):
 	Enable.

	* tree.c (print_properties): For an array consider printing it out
 	as an integer array.

	* hw_memory.c (hw_memory_init_address): If an "available" property
 	is present, use that to initialize the available memory instead of
 	using the reg property.

	* emul_generic.c (emul_add_tree_hardware): Add "available"
 	property to memory device.

Fri Dec 20 13:19:07 1996  Andrew Cagney  <[e-mail]>

	* ppc-instructions (Rotate Left Word then AND with Mask): Enable.

	* device.c (device_instance_call_method): Was only looking at the
 	first method.

	* hw_disk.c (hw_disk_nr_blocks): Implement #blocks method.
	(hw_disk_block_size): Implement block-size method.
	(hw_disk_max_transfer): Implement max-transfer method.

	* hw_phb.c (hw_phb_init_address): Reinit the rest of the PHB.

	* emul_chirp.c (chirp_emul_instance_to_path): Recover from an
 	invalid ihandle.
	(chirp_emul_instance_to_package): Ditto.
	(chirp_emul_method): Ditto.
	(chirp_emul_read): Ditto.
	(chirp_emul_write): Ditto.
	(chirp_emul_close): Ditto.
	(chirp_emul_seek): Ditto.
	(chirp_emul_package_to_path): Ditto (for phandle).
	(chirp_emul_package_to_path): Return the length.

	* psim.c (psim_merge_device_file): Allow continuation lines.

Thu Dec 19 11:09:43 1996  Andrew Cagney  <[e-mail]>

	* emul_chirp.c (chirp_emul_boot): Implement. Well report the new
 	string and exit.
	
	* emul_chirp.c (chirp_emul_exit): Correct type of args struct
 	members - *_cell not host dependant int.

Wed Dec 18 17:49:59 1996  Andrew Cagney  <[e-mail]>

	* interrupts.c (perform_oea_interrupt): Print additional
 	information if a double interrupt is encountered.

Wed Dec 18 17:49:59 1996  Andrew Cagney  <[e-mail]>
	
	* psim.c (psim_merge_device_file): Tolerate an incorrect file-name
 	being specified with the -f option.
	(psim_merge_device_file): Correct check for end of string.

Wed Dec 18 17:49:59 1996  Andrew Cagney  <[e-mail]>
	
	* emul_chirp.c (chirp_emul_peer): Was falling off the end of the
 	list of devices. Return zero to the client instead.
	* emul_chirp.c (chirp_emul_child): Ditto
	* emul_chirp.c (chirp_emul_parent): Ditto

	* device.c (device_root): Assert assumption about the device being
 	valid.

Tue Dec 17 15:12:38 1996  Andrew Cagney  <[e-mail]>

	* emul_chirp.c (emul_chirp_create): Add description property to
 	each significant node in the device tree.
	* emul_bugapi.c (emul_bugapi_create): Ditto.

Fri Dec 13 14:30:31 1996  Andrew Cagney  <[e-mail]>

	* main.c (sim_io_read_stdin): For a single byte STDIO read, use a
 	tempoary two byte buffer.  Single byte read with fgets will not
 	work.
	* main.c: Include errno.h.
	(sim_io_read_stdin): For non-STDIO, make it work.

	* emul_chirp.c (chirp_emul_read): Return the correct error status.