changelog

这个是LINUX下的GDB调度工具的源码

	write, open).

	* interp.c (max_mem): New variable.
	(load_mem): Check memory address against max_mem to
	avoid some self-destructive behaviors.

Tue May 13 21:45:24 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix typo in cc0 setting for lsr.

Tue May  6 13:22:12 1997  Jeffrey A Law  ([e-mail])

	* interp.c: Random typo/thinko cleanups.

Thu Apr 24 00:39:51 1997  Doug Evans  <[e-mail]>

	* configure: Regenerated to track ../common/aclocal.m4 changes.

Mon Apr 21 10:29:30 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix typo in "open" syscall emulation.

Fri Apr 18 14:04:31 1997  Andrew Cagney  <[e-mail]>

	* interp.c (sim_stop): Add stub function.

Thu Apr 17 03:23:58 1997  Doug Evans  <[e-mail]>

	* Makefile.in (SIM_OBJS): Add sim-load.o.
	* interp.c (sim_kind, myname): New static locals.
	(sim_open): Set sim_kind, myname.  Ignore -E arg.
	(sim_load): Return SIM_RC.  New arg abfd.  Call sim_load_file to
	load file into simulator.  Set start address from bfd.
	(sim_create_inferior): Return SIM_RC.  Delete arg start_address.

Wed Apr 16 18:06:50 1997  Andrew Cagney  <[e-mail]>

	* simops.c (OP_F010): SYS_execv, SYS_time, SYS_times, SYS_utime
 	only include if implemented by host.

Mon Apr  7 15:45:02 1997  Andrew Cagney  <[e-mail]>

	* configure: Regenerated to track ../common/aclocal.m4 changes.
	* config.in: Ditto.

Fri Apr  4 20:01:56 1997  Ian Lance Taylor  <[e-mail]>

	* Makefile.in: Change mn10200-opc.o to m10200-opc.o, to match
	corresponding change in opcodes directory.

Wed Apr  2 15:06:28 1997  Doug Evans  <[e-mail]>

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

	* configure: Regenerated to track ../common/aclocal.m4 changes.

Wed Apr  2 14:34:19 1997 Andrew Cagney <[e-mail]>

	* configure: Regenerated to track ../common/aclocal.m4 changes.

Thu Mar 20 20:28:14 1997  Jeffrey A Law  ([e-mail])

	* mn10200_sim.h: Protect uses of "signed" to cater to broken
	non-ansi compilers (HPs).  Don't use #error for the same reason.

Tue Mar 18 12:23:31 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Don't sign-extend immediate for "mov imm16,an".
	Simplify "sub" handling.  Fix "mul" to properly sign extend
	operands.  Set CF appropriately for btst imm16,dn.  Implement "rti".

	* gencode.c: Delete unused "Opcodes" and "curop" variables.

Wed Mar 19 01:14:00 1997  Andrew Cagney  <[e-mail]>

	* configure: Regenerated to track ../common/aclocal.m4 changes.

Mon Mar 17 15:10:07 1997  Andrew Cagney  <[e-mail]>

	* configure: Re-generate.

Fri Mar 14 10:34:11 1997  Michael Meissner  <[e-mail]>

	* configure: Regenerate to track ../common/aclocal.m4 changes.

Thu Mar 13 12:53:14 1997  Doug Evans  <[e-mail]>

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

Wed Mar 12 15:02:35 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix typo for "bclr".

Wed Feb 26 16:46:13 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Handle new calling convention in emulated syscall
	code.

Mon Feb 24 14:25:11 1997  Jeffrey A Law  ([e-mail])

	* interp.c (load_mem_big): Add some missing parens.

Wed Feb 19 23:19:08 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Don't use "long long" data types for intermediate
	values in "divu", "mul" and "mulu" instructions.

Fri Feb 14 02:46:46 1997  Jeffrey A Law  ([e-mail])

	* interp.c (hash): Rework to be more efficient.
	(dispatch): Renamed from lookup_hash.  Dispatch to the target
	function and update the PC here.
	(load_mem_big): Now a macro.
	(sim_resume): Restructure code to read an insn, determine its
	length, call dispatch routines, etc to be much more efficient.

Fri Feb  7 12:59:36 1997  Jeffrey A Law  ([e-mail])

	* interp.c (MAX_HASH): Redefine to 127.
	(struct hash_entry): Add "count" field when HASH_STAT is defined.
	(hash): Improve hashing for many heavily used opcodes.
	(lookup_hash): Bump counters if HASH_STAT is defined.
	(sim_open): Don't put the same opcode in the hash table more
	than once.  Clear counters if HASH_STAT is defined.
	(sim_resume): After program exits, dump hash table stats if
	HASH_STAT is defined.

Wed Feb  5 10:28:37 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix register extraction for "ext dn".

Tue Feb  4 17:27:41 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix register extractions for "movbu (an), dm".

Tue Feb  4 13:33:30 1997  Doug Evans  <[e-mail]>

	* Makefile.in (@COMMON_MAKEFILE_FRAG): Use
	COMMON_{PRE,POST}_CONFIG_FRAG instead.
	* configure.in: sinclude ../common/aclocal.m4.
	* configure: Regenerated.

Fri Jan 31 01:19:02 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Get carry-in bit right for rol.  Just clear the
	NF flag for btst imm8,dn.

Wed Jan 29 15:47:42 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Properly compute ZF flag for many insns.

Sat Jan 25 17:06:55 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Properly truncate divisor and dividend before
	performing "divu" operation.

Fri Jan 24 10:47:48 1997  Jeffrey A Law  ([e-mail])

	* simops.c (init_system): Allocate 2^19 bytes of space for
	the simulator.

Thu Jan 23 21:17:33 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Rework code to extract arguments for emulated
	syscalls to handle 24bit pointers.

Thu Jan 23 14:06:04 1997  Stu Grossman  ([e-mail])

	* configure configure.in Makefile.in:  Update to new configure
	scheme which is more compatible with WinGDB builds.
	* configure.in:  Improve comment on how to run autoconf.
	* configure:  Re-run autoconf to get new ../common/aclocal.m4.
	* Makefile.in:  Use autoconf substitution to install common
	makefile fragment.

Thu Jan 23 12:04:38 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix destination register for "mov (abs24),an".

Tue Jan 21 15:59:21 1997  Jeffrey A Law  ([e-mail])

	* simops.c: "rts" adds 4 to the stack pointer.

	* simops.c: Fix CF and CX computation for add instructions.

	* simops.c: Leave the upper 8 bits alone for logical ops.
	Mask off high 8 bits before doing any shifts/rotates.
	Fix carry bit handling in rotates again.

Mon Jan 20 10:45:08 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Don't lose the sign bit for "asr".

Fri Jan 17 01:45:14 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix overflow computation for "cmp" and "sub"
	instructions.

	* simops.c: Use the right register for "jmp (an)" and "jsr (an)".

	* interp.c (hash): Improve hashing for 3 byte instructions.

	* simops.c: Fix extraction of 16/24bit immediates for some
	instructions.  "cmp" instructions only modify the PSW.
	Fix various thinkos when extracting register operands too.

Thu Jan 16 07:47:56 1997  Jeffrey A Law  ([e-mail])

	* simops.c: Fix "rol" and "ror".

	* simops.c: Truncate PC to 24bits after modifying it.
	Closer stab at emulated system calls.

Tue Jan 14 12:33:12 1997  Jeffrey A Law  ([e-mail])

	* interp.c (hash): Improve hashing of two byte insns.
	(store_mem): Handle storing 3 byte quantities.

	* simops.c: Fix various typos/thinkos.

	* interp.c (load_mem_big, load_mem, store_mem): Fix thinko in
	code to handle 24bit addresses.
	* simops.c (REG0_8, REG0_16): Fix typo.

Mon Jan  6 16:17:09 1997  Jeffrey A Law  ([e-mail])

	* mn10200_sim.h: Various fixes for mixed 16/24bit architecture.
	* interp.c: Similarly.
	* simops.c: Similarly.

	* Makefile.in, config.in, configure, configure.in: New files.
	* gencode.c, interp.c, mn10200_sim.h, simops.c: New files.