changelog

这个是LINUX下的GDB调度工具的源码

	(sim_load): Record bfd of loaded file in prog_bfd.
	* simops.c (prog_bfd): Renamed from exec_bfd.

Fri Apr 18 14:17:12 1997  Andrew Cagney  <[e-mail]>

	* interp.c (sim_stop): Stub function.

Thu Apr 17 03:53:18 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 19:53:55 1997  Andrew Cagney  <[e-mail]>

	* simops.c (OP_10007E0): Only provide system calls SYS_execv,
 	SYS_wait, SYS_wait, SYS_utime, SYS_time if defined by the host.

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

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

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.

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 13:00:54 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.

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.

Thu Jan 23 11:46:23 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.

Mon Jan 20 16:05:34 1997  Michael Meissner  <[e-mail]>

	* simops.c (OP_{E0,2E0,6E0}): The multiply operations sign extend,
	not zero extend.

Tue Jan 14 17:06:03 1997  Stu Grossman  ([e-mail])

	* simops.c:  Put ifdefs around things to make MSVC happy.  Get rid
	of unistd.h.  Disable SYS_stat, SYS_chown, SYS_time, SYS_times,
	SYS_gettimeofday and SYS_utime from MSVC.

Tue Dec 31 18:11:13 1996  Michael Meissner  <[e-mail]>

	* simops.c (OP_10007E0): Know that kill encodes the signal number
	via: 0xdead0000 | signal and turn it back into a signal.

Fri Dec 27 14:44:06 1996  Michael Meissner  <[e-mail]>

	* v850_sim.h (SIG_V850_EXIT): Define as -1.

	* interp.c (sim_open): Cast calloc function.
	(sim_stop_reason): If signal is SIG_V850_EXIT, inform gdb the
	program exited with the appropriate exit code.
	(sim_set_interrupt): Declare buildargv.

	* simops.c (OP_10007E0): Make exit signal normal exit.  Make time
	type correct and work on big endian systems.

Wed Nov 20 02:18:44 1996  Doug Evans  <[e-mail]>

	* Makefile.in: Delete stuff moved to ../common/Make-common.in.
	(SIM_OBJS,SIM_EXTRA_CFLAGS,SIM_EXTRA_CLEAN): Define.
	* configure.in: Simplify using macros in ../common/aclocal.m4.
	Call AC_CHECK_HEADERS(unistd.h).
	* configure: Regenerated.
	* config.in: New file.
	* simops.c: #include "config.h".  #include <unistd.h> if present.

Sun Nov  3 23:02:54 1996  Stan Shebs  <[e-mail]>

	* v850_sim.h (State): New slots dummy_mem, pending_nmi.
	(EIPC, etc): New macros for system registers.
	* simops.c, interp.c: Use everywhere.

	* interp.c: Add support for interrupts issued by interrupt
	generators, either PC- or time-based.  Controlled by simulator
	command "sim interrupt".

	* interp.c: Add support for variable-size allocation of memory,
	via simulator command "sim memory-map".
	(map): Issue SIGSEGV for references to invalid memory regions.
	
Thu Oct 31 14:44:10 1996  Gavin Koch  <[e-mail]>
        
        * simops.c: Include <sys/time.h> for struct timeval and 
        struct timezone.
        
Wed Oct 30 08:49:10 1996  Jeffrey A Law  ([e-mail])

	* simops.c (OP_10007E0): Handle SYS_times and SYS_gettimeofday.

	* simops.c (OP_10007E0): Handle SYS_time.

Tue Oct 29 14:22:55 1996  Jeffrey A Law  ([e-mail])

	* simops.c: Include <sys/stat.h>.
	(OP_10007E0): Handle SYS_stat.

Thu Oct 24 12:26:35 1996  Jeffrey A Law  ([e-mail])

	* simops.c (OP_10007E0): Don't declare errno.

	* simops.c (OP_500): Mask off low bit in displacement
	for sld.w.
	(OP_501): Similarly.

	* simops.c (OP_500): Fix displacement handling for sld.w.
	(OP_501): Similarly for sst.w.

	* simops.c (trace_input): Remove all references to SEXT7.
	(OP_300, OP_400, OP_500, OP_380, OP_480, OP_501): Displacement
	is zero extended for sst/sld instructions.
	* v850_sim.h (SEX7): Delete.  It's no longer needed (and it
	was incorrect anyway).

Thu Oct 24 10:33:33 1996  Stu Grossman  ([e-mail])

	* Makefile.in:  Get rid of srcroot.  Set all INSTALL macros via
	autoconf.
	* gencode.c (write_opcodes):  Pad operands field to account for
	MSVC braindamage.
	* simops.c:  Include errno.h.  Exclude SYS_chown, since MSVC
	doesn't support it.  (Why is this here in the first place?!?)
	* v850_sim.h:  Get rid of 64 bit defs.  Also, get rid of #elif's.
	Change number of operands in struct simops from 9 to 6.  Define
	SIGTRAP and SIGQUIT for MSVC.

Tue Oct 15 16:19:51 1996  Stu Grossman  ([e-mail])

	* interp.c (MEM_SIZE):  It's now bytes, not a power of 2.
	* (map):  Add support for external mem in the 1->2 meg range.
	Also, abort() when memory access is way out of bounds.  (Better to
	die than to give wrong result.  (This will be fixed later.))
	* (sim_size):  MEM_SIZE is now bytes, not shift factor.

Tue Oct  1 15:53:24 1996  Gavin Koch <[e-mail]>
        
        * simops.c (trace_input): Swapped order of operands for output
        output of OP_IMM_REG.  Changed the fetching of the operands for
        OP_LOAD32, and OP_STORE32 to work like op-function.
        
Mon Sep 30 15:46:33 1996  Stu Grossman  ([e-mail])

	* interp.c:  Move includes of remote-sim.h and callback.h to
	v850-sim.h.
	* (lookup_hash): Add PC to report of hash failure.
	* (map load_mem store_mem):  New memory subsystem.  Models V851
	memory system.
	* (sim_write sim_read):  Use new memory subsystem.
	* (sim_resume):  Don't load and save PC into EIPC anymore.  Needed
	to make user-defined traps work right.
	* simops.c (OP_*):  Use new memory subsystem.
	* (OP_14007E0 (reti)):  Implement reti.
	* (OP_14996E0 (trap)):  Implement user-defined traps.  Move I/O to
	trap 31.  Use new memory subsystem.
	* v850_sim.h:  Prototypes for load_mem, store_mem and map.  Use
	load_mem in RLW macro.

Fri Sep 27 18:34:09 1996  Stu Grossman  ([e-mail])

	* gencode.c (write_opcodes):  Output hex values for opcode mask
	and patterns.
	* interp.c (sim_resume):  Save and restore PC from the appropriate
	register.
	* (sim_fetch_register sim_store_register):  Fix byte-order problem
	with reading and writing registers.
	* simops.c (OP_FFFF):  Implement pseudo-breakpoint insn.

Fri Sep 27 17:42:37 1996  Jeffrey A Law  ([e-mail])

	* simops.c (trace_input): Fix thinko. 

Wed Sep 18 09:54:12 1996  Michael Meissner  <[e-mail]>

	* simops.c (exec_bfd): Rename from sim_bfd.
	(trace_input): Ditto.

Thu Sep 12 12:03:05 1996  Michael Meissner  <[e-mail]>

	* simops.c (trace_input): Use find_nearest_line to print line
	number, function name or file name of PC.

Wed Sep 11 16:44:37 1996  Michael Meissner  <[e-mail]>

	* simops.c: Add tracing support.  Use SEXTxx macros instead of
	doing hardwired shifts.

	* configure.in (--enable-sim-cflags): Add switch to add additional
	flags to simulator buld.  If --enable-sim-cflags=trace, turn on
	tracing.
	* configure: Regenerate.

	* Makefile.in: Don't require a VPATH capable make if configuring
	in the same directory.  Don't use CFLAGS for configuration flags.
	Add flags from --enable-sim-cflags.  Support canadian cross
	builds.  Rebuild whole simulator if include files change.

	* interp.c (v850_debug): New global for debugging.
	(lookup_hash,sim_size,sim_set_profile): Use
	printf_filtered callback, instead of calling printf directly.
	(sim_{open,trace}): Enable tracing if -t and compiled for tracing.

	* v850_sim.h: Use limits.h to set the various sized types.
	(SEXT{5,7,16,22}): New macros.

Mon Sep  9 20:50:46 1996  Jeffrey A Law  ([e-mail])

	* interp.c (hash): Make this an inline function
	when compiling with GCC.  Simplify.
	* simpos.c: Explicitly include "sys/syscall.h".  Remove
	some #if 0'd code.  Enable more emulated syscalls.

Wed Sep  4 01:48:55 1996  Jeffrey A Law  ([e-mail])

	* interp.c: Fix sign bit handling for add and sub instructions.

Tue Sep  3 10:20:30 1996  Jeffrey A Law  ([e-mail])

	* gencode.c: Fix various indention & style problems.
	Remove test code.  Remove #if 0 code.
	* interp.c: Provide prototypes for all static functions.
	Fix minor indention problems.
	(sim_open, sim_resume): Remove unused variables.
	(sim_read): Return type is "int".
	* simops.c: Remove unused variables.
	(divh): Make result of divide-by-zero zero.
	(setf): Initialize result to keep compiler quiet.
	(sar instructions): These just clear the overflow bit.
	* v850_sim.h: Provide prototypes for put_byte, put_half
	and put_word.

	* interp.c: OP should be an array of 32bit operands!
	(v850_callback): Declare.
	(do_format_5): Fix extraction of OP[0].
	(sim_size): Remove debugging printf.
	(sim_set_callbacks): Do something useful.
	(sim_stop_reason): Gross hacks to get c-torture running.
	* simops.c: Simplify code for computing targets of bCC
	insns.   Invert 's' bit if 'ov' bit is set for some
	instructions.  Fix 'cy' bit handling for numerous
	instructions.  Make the simulator stop when a halt
	instruction is encountered.  Very crude support for
	emulated syscalls (trap 0).
	* v850_sim.h: Include "callback.h" and declare
	v850_callback.  Items in the operand array are 32bits.

Sun Sep  1 22:35:35 1996  Jeffrey A Law  ([e-mail])

	* interp.c (sim_resume): Fix code to check for a format 3
	opcode.
	* simops.c: bCC insns only argument is a constant, not a
	register value (duh...)

Fri Aug 30 10:33:49 1996  Jeffrey A Law  ([e-mail])

	* simops.c: Fix "not1" and "set1".

	* simops.c: Don't forget to initialize temp for
	"ld.h" and "ld.w"

	* interp.c: Remove various debugging printfs.

	* simops.c: Fix satadd, satsub boundary case handling.

	* interp.c (hash): Fix.
	* interp.c (do_format_8): Get operands correctly and
	call the target function.
	* simops.c: Rough cut at "clr1", "not1", "set1", and "tst1".

Thu Aug 29 13:53:29 1996  Jeffrey A Law  ([e-mail])

	* interp.c (do_format_4): Get operands correctly and
	call the target function.
	* simops.c: Rough cut at "sld.b", "sld.h", "sld.w", "sst.b",
	"sst.h", and "sst.w".

	* v850_sim.h: The V850 doesn't have split I&D spaces.  Change
	accordingly.  Remove many unused definitions.
	* interp.c: The V850 doesn't have split I&D spaces.  Change
	accordingly.
	(get_longlong, get_longword, get_word): Deleted.
	(write_longlong, write_longword, write_word): Deleted.
	(get_operands): Deleted.
	(get_byte, get_half, get_word): New functions.
	(put_byte, put_half, put_word): New functions.
	* simops.c: Remove unused functions.  Rough cut at
	"ld.b", "ld.h", "ld.w", "st.b", "st.h", "st.w" insns.

	* v850_sim.h (struct _state): Remove "psw" field.  Add
	"sregs" field.
	(PSW): Remove bogus definition.
	* simops.c: Change condition code handling to use the psw
	register within the sregs array.  Handle "ldsr" and "stsr".

	* simops.c: Handle "satadd", "satsub", "satsubi", "satsubr".

	* interp.c (do_format_5): Get operands correctly and
	call the target function.
	(sim_resume): Don't do a PC update for format 5 instructions.
	* simops.c: Handle "jarl" and "jmp" instructions.

	* simops.c: Fix minor typos.  Handle "cmp", "setf", "tst"
	"di", and "ei" instructions correctly.

	* interp.c (do_format_3): Get operands correctly and call
	the target function.
	* simops.c: Handle bCC instructions.

	* simops.c: Add condition code handling to shift insns.
	Fix minor typos in condition code handling for other insns.

	* Makefile.in: Fix typo.
	* simops.c: Add condition code handling to "sub" "subr" and
	"divh" instructions.

	* interp.c (hash): Update to be more accurate.
	(lookup_hash): Call hash rather than computing the hash
	code here.
	(do_format_1_2): Handle format 1 and format 2 instructions.
	Get operands correctly and call the target function.
	(do_format_6): Get operands correctly and call the target
	function.
	(do_formats_9_10): Rough cut so shift ops will work.
	(sim_resume): Tweak to deal with format 1 and format 2
	handling in a single funtion.  Don't update the PC
	for format 3 insns.  Fix typos.
	* simops.c: Slightly reorganize.  Add condition code handling
	to "add", "addi", "and", "andi", "or", "ori", "xor", "xori"
	and "not" instructions.
	* v850_sim.h (reg_t): Registers are 32bits.
	(_state): The V850 has 32 general registers.  Add a 32bit
	psw and pc register too.  Add accessor macros

	* Makefile.in, interp.c, v850_sim.h: Bring over endianness
	changes from the d10v simulator.

	* simops.c: Add shift support.

	* simops.c: Add multiply & divide support.  Abort for system
	instructions.

	* simops.c: Add logicals, mov, movhi, movea, add, addi, sub
	and subr.  No condition codes yet.

Wed Aug 28 13:53:22 1996  Jeffrey A Law  ([e-mail])

	* ChangeLog, Makefile.in, configure, configure.in, v850_sim.h, 
	gencode.c, interp.c, simops.c: Created.