changelog

这个是LINUX下的GDB调度工具的源码

2003-02-27  Andrew Cagney  <[e-mail]>

	* interf.c (sim_open, sim_create_inferior): Rename _bfd to bfd.

2002-06-16  Andrew Cagney  <[e-mail]>

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

2002-06-08  Andrew Cagney  <[e-mail]>

	* sis.h: Include "gdb/remote-sim.h" and "gdb/callback.h".
	* interf.c: Include "gdb/remote-sim.h".

Tue May 23 21:39:23 2000  Andrew Cagney  <[e-mail]>

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

2000-03-07  Frank Ch. Eigler  <[e-mail]>

	From John Dallaway  <[e-mail]>:
	* Makefile.in (install-sis): Add $(EXEEXT) for Windows host.

2000-03-03  Jonathan Larmour  <[e-mail]>

	* func.c (buffer_read_memory): Change type of size to unsigned to
	match prototype

Thu Sep  2 18:15:53 1999  Andrew Cagney  <[e-mail]>

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

1999-05-08  Felix Lee  <[e-mail]>

	* configure: Regenerated to track ../common/aclocal.m4 changes.
	
1999-03-03  DJ Delorie  <[e-mail]>

	* configure.in: add termcap and -luser32 for host=cygwin
	* configure: regenerate
	
1999-02-11  Hugo Tyson  <[e-mail]>

	* exec.c (dispatch_instruction): 
	Correct the sense of the
	          if (!sparclite) {
		     sregs->trap = TRAP_UNIMP;
                     break;
		  }
	clause that has been pasted around: it's correct in the SCAN and
	DIVScc (divide step) cases (where it was probably originally
	written?), but reversed in the SDIV, SDIVcc, UDIV, UDIVcc cases
	ie. instructions only in the SPARC V8 or SPARClite 86x
	architectures.  It was also present when not required for SMUL,
	SMULcc, UMUL, UMULcc instructions that are present in all
	architectures.

1999-01-25  Hugo Tyson  <[e-mail]>

	* interf.c (run_sim): Fix a bug in the main loop's handling of
	annulled delay slot instructions.  There is precedent for this
	change; the _other_ main loop in sis.c gets it right according to
	my reading of the code.

	The bug is: if an interrupt happens when the next instruction
	(at sregs->pc) is annulled, the trap is taken (by execute_trap())
	with the current values of PC and NPC, so when the trap returns,
	the annulled instruction is indeed executed.  Another giveaway is
	that the annul flag is cleared in execute_trap(): the information
	is demonstrably discarded.

	The solution is: perform annulling before looking for traps, in
	fact it's neater to do annulling, see if there's an interrupt and
	if not, do the instruction, then handle traps be they generated by
	interrupts pending or by the instruction we might just have done.
	That's what the sis.c one does.

1999-01-20  Hugo Tyson  <[e-mail]>

	* sis.h: Add asr17 register for support of SparcLITE (at least the
	Hitachi ones I find before me)

	* exec.c (dispatch_instruction): Case WRY: Allow write of asr17 if
	sparclite.  Other ASR numbers than 17 or 0 (Y) trap out.
	Case RDY: Allow read of asr17 if sparclite.  Other ASRs ditto.
	(execute_trap): Do single-vector-trapping if asr17 bit 0 is set.
	(init_regs): Initialize y and asr17.
	NB: In instruction-set space, the Y register is asr0; the
	instructions have different names for human reasons only.

	* sis.c:
	* interf.c: Set boolean mode variable dumbio if invoked with
	argument "-dumbio" and mention it of verbose.
	* erc32.c: if "dumbio" is set, do not assume that there is a
	terminal type device attached to stdin/stdout.  Do not set
	buffering or mess with tcsetattr or do any read operations in
	order to make UART interrupts; not input data is supported.
	This is necessary to allow the sim to be used within the eCos
	testing infrastructure where stdin/stdout are pipes to a TCL
	program; the sim hangs otherwise.

Thu Jul 23 07:17:03 1998  Mark Alexander  <[e-mail]>

	* exec.c (dispatch_instruction): Add SPARClite 'scan' instruction.

Tue Jul  7 21:12:41 1998  Mark Alexander  <[e-mail]>

	* func.c (bfd_load): Add special handling of a.out executables.

Sat Jun 13 08:33:25 1998  Mark Alexander  <[e-mail]>

	* func.c (bfd_load): Print correct endianness.
	* interf.c (run_sim): Print debugging information if verbosity level
	is greater than 2.
	(sim_open): Repeated -v options now increment verbosity level.
	(sim_store_register): Handle little-endian case.
	(flush_window): Print debugging information if verbosity level
	is greater then 2.

Tue Jun  2 15:20:35 1998  Mark Alexander  <[e-mail]>

	* interf.c (sim_open): Use revamped memory_read, which makes
	byte-swapping unnecessary.  Add -sparclite-board option for
	emulating RAM found on typical SPARClite boards.  Print
	error message for unrecognized option.
	* erc32.c: Change RAM address and size from constants to variables,
	to allow emulation of SPARClite board RAM.
	(fetch_bytes, store_bytes): New helper functions for revamped
	mememory_read and memory_write.
	(memory_read, memory_write): Rewrite to store bytes in target
	byte order instead of storing words in host byte order; this
	greatly simplifies support of little-endian programs.
	(get_mem_ptr): Remove unnecessary byte parameter.
	(sis_memory_write, sis_memory_read): Store words in target
	byte order instead of host byte order.
	(byte_swap_words): Remove, no longer needed.
	* sis.h ((byte_swap_words): Remove declaration, no longer needed.
	(memory_read): Add new sz parameter.
	* sis.c (run_sim): Use revamped memory_read, which makes
	byte-swapping unnecessary.
	* exec.c (dispatch_instruction): Use revamped memory_read, which
	makes byte-swapping and double-word fetching unnecessary.
	* func.c (sparclite_board): Declare new variable.
	(get_regi): Handle little-endian data.
	(bfd_load): Recognize little-endian SPARClite as having
	little-endian data.
	
Fri May 22 14:23:16 1998  Mark Alexander  <[e-mail]>

	* erc32.c (port_init): Print messages only if sis_verbose is true.
	* func.c (bfd_load): Ditto.
	* interf.c (sim_open): Ditto.

Thu May 14 23:10:48 1998  Mark Alexander  <[e-mail]>

	* sis.h (uint64, int64): Define.
	* exec.c (SDIV, SDIVCC, UDIV, UDIVCC): Define new opcodes.
	* (mul64): Simplify calculation of negative result.
	* (div64): New helper function for 64-bit division.
	* (dispatch_instruction): Add emulation of SDIV, SDIVCC, UDIV,
	and UDIVCC.
	
Wed May 13 14:59:54 1998  Mark Alexander  <[e-mail]>

	* erc32.c (close_port): Don't close stdin; it kills GDB.
	(byte_swap_words): New function.
	* sis.h: (byte_swap_words): Declare.
	* interf.c (run_sim): Always fetch instructions as big-endian.
	* sis.c (run_sim): Ditto.

Tue Apr 28 18:33:31 1998  Geoffrey Noer  <[e-mail]>

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

Sun Apr 26 15:31:55 1998  Tom Tromey  <tromey@creche>

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

Sun Apr 26 15:20:17 1998  Tom Tromey  <[e-mail]>

	* acconfig.h: New file.
	* configure.in: Reverted change of Apr 24; use sinclude again.

Fri Apr 24 14:16:40 1998  Tom Tromey  <tromey@creche>

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

Fri Apr 24 11:19:52 1998  Tom Tromey  <[e-mail]>

	* configure.in: Don't call sinclude.

Sat Apr 18 12:00:16 1998  Mark Alexander  <[e-mail]>

	* func.c (disp_fpu): Fix build problem on big-endian hosts.

Wed Apr  8 19:33:34 1998  Mark Alexander  <[e-mail]>

	* erc32.c (sim_stop): Handle SIGINT gracefully.
	* interf.c (sim_open): Don't catch SIGINT; GDB will do that for us.

Wed Apr  8 18:29:40 1998  Mark Alexander  <[e-mail]>

	* exec.c (dispatch_instruction): Change how carry out is calculated
	in DIVSCC.  Add emulation of SMULCC, UMUL, and UMULCC.

Sat Apr  4 20:36:25 1998  Andrew Cagney  <[e-mail]>

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

Wed Apr  1 21:19:18 1998  Mark Alexander  <[e-mail]>

	* end.c: Update to version 2.7.5, fix compiler warnings and bugs.
	* erc32.c: Ditto.
	* exec.c: Ditto.
	* float.c: Ditto.
	* func.c: Ditto.
	* help.c: Ditto.
	* interf.c: Ditto.
	* sis.c: Ditto.
	* sis.h: Ditto.

Fri Mar 27 16:15:52 1998  Andrew Cagney  <[e-mail]>

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

Wed Mar 25 12:35:29 1998  Andrew Cagney  <[e-mail]>

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

Wed Mar 18 12:38:12 1998  Andrew Cagney  <[e-mail]>

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

Tue Feb 17 12:41:11 1998  Andrew Cagney  <[e-mail]>

	* interf.c (sim_store_register, sim_fetch_register): Pass in
 	length parameter.  Return -1.

Sun Feb  1 16:47:51 1998  Andrew Cagney  <[e-mail]>

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

Sat Jan 31 18:15:41 1998  Andrew Cagney  <[e-mail]>

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

Mon Jan 19 22:26:29 1998  Doug Evans  <devans@seba>

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

Mon Dec 15 23:17:11 1997  Andrew Cagney  <[e-mail]>

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

Thu Dec  4 09:21:05 1997  Doug Evans  <[e-mail]>

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

Fri Oct  3 09:28:00 1997  Andrew Cagney  <[e-mail]>

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

Wed Sep 24 17:38:57 1997  Andrew Cagney  <[e-mail]>

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

Tue Sep 23 11:04:38 1997  Andrew Cagney  <[e-mail]>

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

Mon Sep 22 11:46:20 1997  Andrew Cagney  <[e-mail]>

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

Fri Sep 19 17:45:25 1997  Andrew Cagney  <[e-mail]>

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

Mon Sep 15 17:36:15 1997  Andrew Cagney  <[e-mail]>

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

Wed Aug 27 18:13:22 1997  Andrew Cagney  <[e-mail]>

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

Tue Aug 26 10:38:20 1997  Andrew Cagney  <[e-mail]>

	* float.c (__setfpucw): Compile on any i386 target.  Not just NT.

	* interf.c (sim_kill): Delete.
	(sim_create_inferior): Add ABFD argument.  Initialize PC from ABFD
 	argument.
	(sim_load): Don't save start address.
	(start_address): Delete variable.

Mon Aug 25 17:50:22 1997  Andrew Cagney  <[e-mail]>

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

Mon Aug 25 16:19:49 1997  Andrew Cagney  <[e-mail]>

	* interf.c (sim_open): Add ABFD argument. Change ARGV to PARGV.

Mon Jun 30 11:45:25 1997  Doug Evans  <[e-mail]>