changelog

用汇编语言编程源代码

	Eliminate code to read MIPS a.out executable (where can you get
	them anyways)?

	* buttons.c spim-utils.c spim.c xspim.h Makefile.std Imakefile
	spim-utils.h:
	Clean up trap file loading.

	* prevasive:
	Clean up copyright notices.

	* dosnames.txt makefile.dos:
	Files to compile SPIM on DOS.

Tue Jul  8 17:32:55 1997  James Larus  <[e-mail]>

	* mips_syscall.c run.c spim-utils.c spim.c spim.h:
	Changes to port code to PCs. [From: "David A. Carley"
	<[e-mail]>]

	* inst.h:
	Eliminate redundant declarations of k_text_begins_at_point. [From:
	"David A. Carley" <[e-mail]>]


Wed Feb 12 12:29:03 1997  James Larus  <[e-mail] (James Larus)>

	* reg.h xspim.c:
	Allow 32 single precision FP registers.

Fri Jan 17 08:54:44 1997  James Larus  <[e-mail] (James Larus)>

	* Version 5.9 released.

	* spim.tex:
	Change document to have $sp point at last word of stack frame,
	instead of first free word no stack (no code changes).

Wed Jan  8 14:08:44 1997  James Larus  <[e-mail] (James Larus)>

	* inst.c:
	Change of 12/16 included NULL in lines.

Tue Jan  7 17:24:32 1997  James Larus  <[e-mail] (James Larus)>

	* scanner.l spim.c spim-utils.c xspim.c spim.h:
	Added -pseudo/-nopseudo flag.

Mon Dec 16 13:22:47 1996  James Larus  <[e-mail] (James Larus)>

	* inst.c:
	Fix printing of long lines (due to long symbols). [From:
	"William M. Waite" <[e-mail]>]

Thu Dec  5 15:39:01 1996  James Larus  <[e-mail] (James Larus)>

	* Documentation/spim.tex:
	Improved documentation of div/divu to emphasis that divu is
	unsigned and that overflow testing only occurs with 3 argument
	pseudo-op. [From: Susan]

Mon Nov 11 08:47:16 1996  James Larus  <[e-mail] (James Larus)>

	* xspim.c:
	Fixed highlighting of selected line while single stepping! [From:
	"William M. Waite" <[e-mail]>]

Fri Oct  4 14:19:23 1996  James Larus  <[e-mail] (James Larus)>

	* mem.c (print_mem):
	Word-align address before printing memory. [From:
	[e-mail] (Scott D. Anderson)]

Fri Sep 20 15:40:33 1996  James Larus  <[e-mail] (James Larus)>

	* spim.c xspim.c:
	read_input did not consistently or correctly handle input when
	buffer was of length 1. [From: Ron Van Cleave
	<[e-mail]>]

Thu Apr 11 09:04:51 1996  James Larus  <[e-mail] (James Larus)>

	* Imakefile:
	Fix usage of -lm flag. [From: David Thompson <[e-mail]>]

Fri Jan  5 12:57:09 1996  James Larus  <[e-mail] (James Larus)>

	* Version 5.8 released.

	* parser.y:
	Do not clear the labels at start of a line, only after a line with
	content, so that parser allows blank line between label and
	directive. [From: Fischer & student.]

Fri Oct 13 08:27:53 1995  James Larus  <[e-mail]>

	* parser.y:
	Translation of shift immediate (sll) to shift variable (sllv)
	missed that arguments to constructor are reversed. [From:
	[e-mail]]

Tue Oct 10 13:06:09 1995  James Larus  <[e-mail]>

	* parser.y:
	la $4,3 produced incorrect code. [From: [e-mail]]

Fri Aug 25 09:19:38 1995  James Larus  <[e-mail] (James Larus)>

	* buttons.c cl-cycle.c cl-except.{c,h} inst.c mem.{c,h} reg.h
	spim-utils.c spim.c xspim.c:
	Many cleanups for SGI. [From: "Peter Jacobson" <[e-mail]>]

Thu Aug 17 08:33:19 1995  James Larus  <[e-mail] (James Larus)>

	* Many changes to spim from: [Piers Lauder, [e-mail]]

	* button.c mem.c:
	Added reload button.

	* button.c spim-utils.c:
	Generalized input to accept decimal values as well.

	* inst.c:
	Cleanup of instruction line disassembly formating.

	* op.h:
	Instruction format for sllv was wrong.

	* spim.c:
	Fix terminal set up for raw input.

	* xspim.c:
	Fixed display format a bit.

Tue Aug 15 11:51:11 1995  James Larus  <[e-mail] (James Larus)>

	* Version 5.7 released.

Tue Aug 15 11:02:02 1995  James Larus  <[e-mail]>

	* mips-syscall.c:
	The constant OPEN_MAX is ifdef'ed out of limits.h on Ultrix!

Tue Aug 15 09:47:27 1995  James Larus  <[e-mail] (James Larus)>

	* trap.handler:
	Ignore (instead of terminating) unaligned instruction addresses,
	so that regress test works.
	* Imakefile Makefile.std:
	Add additional test that installed trap.handler is current, since
	torture test fails with old trap handler.

Fri Aug 11 15:29:43 1995  James Larus  <[e-mail] (James Larus)>

	* mem.c trap.handler:
	Better error message on jump out of text segment to bogus
	address. [From: From: [e-mail]]

Tue Feb 21 17:24:49 1995  James Larus  <[e-mail]>

	* spim.tex:
	Change the documentation to pop a stack frame by adding to the
	$sp. [From: [e-mail]]

Wed Feb  1 16:58:10 1995  James Larus  <[e-mail]>

	* Configure mips-syscall.c read-aout.c spim-utils.c:
	Change ifdef's so SPIM compiles on SGI boxes.  The binary file
	execution does not work because of system call and executable
	format differences. [From: Charles Daniel <[e-mail]>]

Fri Jan 27 17:14:43 1995  James Larus  <[e-mail]>

	* Imakefile:
	Added second colon to keep GNU make happy on output of
	xmkmf. [From: Robert  Wieda <[e-mail]>]

Wed Jan 18 09:38:29 1995  James Larus  <[e-mail]>

	* Version 5.6 rereleased.

	* tt.le.s tt.be.s:
	Eliminated references off $sp to make verification of output
	easier since change of 11/21 put the environment on the stack so
	that the initial value of $sp dependend on the user's environment.

Fri Jan 13 12:37:19 1995  James Larus  <[e-mail]>

	* Version 5.6 released.

	* sym-tbl.c sym-tab.h:
	Change non-ANSI header.

	* cl-cache.c mem.c cl-mem.h:
	Changes to CL-SPIM from Anne.

Tue Jan  3 14:14:59 1995  James Larus  <[e-mail]>

	*
	Put SPIM manual on the WWW. [From: David Binger
	<[e-mail]>]

Wed Dec 14 08:37:59 1994  James Larus  <[e-mail]>

	* README:
	Improved description of configuration process and eliminated
	mention of LINUX patches. [From: [e-mail] (Larry Carter)]

Tue Dec 13 16:21:01 1994  James Larus  <[e-mail]>

	* run.c reg.h:
	Use reg_word and u_reg_word instead of underlying data
	types. [From: Stephen Bloch <[e-mail]>]

	* parser.y, tt.le.s, tt.be.s:
	Optimization of mult $rx, $ry, 0 into li $rx, 0 was incorrect.
	[From: Massimiliano Poletto <[e-mail]>
	and [e-mail] (Andre' DeHon)]

	* scanner.l:
	Make scanner accept character constants '\t' and '\n'. [From:
	[e-mail] (Jeff Hollingsworth)]

	* spim.c:
	Allow spim top-level to handle EOF (control-D) gracefully. [From:
	[e-mail] (Jeff Hollingsworth)]

	* trap.handler:
	Arguments to instructions to save & restore $at were
	backwards. [From: [e-mail] (Olivier BAUDON)]

Mon Dec 12 17:12:58 1994  James Larus  <[e-mail]>

	* parser.y sym-tbl.c sym-tbl.h read-aout.c:
	Bug in resolving forward references to labels in aligned data
	statements.  The references were resolved with the unaligned
	value. [From: [e-mail] (Charles Fischer)]

Sat Nov 26 16:08:26 1994  James Larus  <[e-mail]>

	* spim-utils.c:
	Ensure stack is double-word aligned after all arguments to main
	are pushed.  [From: Anne]

Mon Nov 21 10:09:22 1994  Jim Larus  <[e-mail]>

	* spim-utils.c spim.c spim.man:
	Did not set up argv and envp properly when program was
	-executed. [From: Anne]
	Changed -execute/-file to take arguments to program after
	program's name, so they must be last now.

	* read-aout.c:
	SPIM routine were freeing non-malloced strings from ld library
	routines.

Fri Nov 11 16:56:12 1994  James Larus  <[e-mail]>

	* op.h run.c inst.c cl-cycle.c cl-cycle.h parser.y:
	Did not implement c.olt.s, c.olt.d, c.ult.s, c.ult.d. [From: Anne]

Fri Nov  4 16:20:40 1994  Jim Larus  <[e-mail]>

	* inst.c op.h:
	Did not set SPIM instruction COND field from binary FP compare
	instructions. [From: Anne]

Tue Nov  1 14:48:57 1994  James Larus  <[e-mail]>

	* mem.c:
	Need to realloc data segment when a new one is created. [From: Anne]

	* read-aout.c:
	Forgot to add bss size to data segment when creating data segment
	for -execute. [From: Anne]

Tue Aug 30 09:09:08 1994  James Larus  ([e-mail])

	* spim.c xspim.c spim-utils.c windows.c spim.h:
	Changed type of console to be void* to avoid casting pointer to int.

Fri Aug 12 11:18:40 1994  James Larus  ([e-mail])

	* Version 5.5 released.

	* mips-syscall.c:
	Move include of sys/syscall.h into include since this file does
	not exist under AIX.

	* spim.c:
	Include termios.h as well.

Thu Aug 11 09:44:00 1994  James Larus  ([e-mail])

	* spim.c spim-utils.c Configure:
	Ifdef if machine has vfprintf and use _doprnt if not [From: Parag
	Patel <[e-mail]>, for BSDI 1.1].

	* cl-cycle.c cl-tlb.c:
	Bug fixes to print_pipeline and TLB simulation [From
	[e-mail] (Ian Cowell), via Anne].

Fri Jul 15 12:50:27 1994  James Larus  ([e-mail])

	* Configure Makefile.std inst.c mips-syscall.c spim.c spim.h:
	Port to Solaris 2.3.

Thu Jul 14 14:48:36 1994  James Larus  ([e-mail])

	* mips-syscall.c spim.c:
	Changes to port to System V.  [From: Robert Lipe <[e-mail]>]

	* spim.c:
	Fixed AIX ifdef.

	* mem.c mips_syscall.c:
	Eliminate bcopy/bzero calls.

Fri Jun  3 16:50:16 1994  James Larus  ([e-mail])

	* reg.h:
	Eliminate incorrect test for even register number in accessing
	FGR's.  This didn't cause problems since the only FP instructions
	that accessed FGR's didn't use this instruction. [From:
	[e-mail]]

Thu May 26 13:37:03 1994  James Larus  ([e-mail])

	* mips-syscall.c:
	Delete unneeded declaration of syscall. [From:
	[e-mail] (ron skopitz)]

Tue Apr 26 11:34:45 1994  James Larus  ([e-mail])

	* xspim.c
	Use 'g' format for floating pointer values so large numbers don't
	overflow. fields.

	* inst.c mem.c parser.y run.c spim-utils.c spim.h xspim.h
	Changes to eliminating ANSI-C related warnings from acc.

	* Configure spim-utils.c
	Split defines for strtol and strtoul (since SunOS defines the
	former, but not the latter).

	* Imakefile
	Ignore the first 5 lines of output file (the start-up message)
	when comparing test results, so as to be insensitive to version
	and trap.handler messages.

	* Configure spim.h spim-utils.c mips-syscall.c mem.c inst.c
	cl-expect.c
	Use memcpy/memset instead of bcopy/bzero functions to be more
	portable.

Mon Mar 21 08:23:21 1994  James Larus  ([e-mail])

	* README:
	Added information about the Amiga port of SPIM.

Tue Feb  8 15:11:31 1994  James Larus  ([e-mail])

	* Imakefile
	Change to scanner.l did not result in lex/flex running!

	* scanner.l
	Did not properly associate line numbers with lines because parser
	lookahead at the end of a command read the newline, thereby
	bumping the line_no counter. [From: [e-mail] (John P.
	Stoneback)]

Tue Feb  1 14:41:31 1994  James Larus  ([e-mail])

	* read-aout.c:
	Changed declaration for compatibility with Ultrix 4.3 library.

Wed Jan 19 15:40:45 1994  James Larus  ([e-mail])

	* Version 5.4 released.

Fri Dec 24 06:20:33 1993  James Larus  ([e-mail])

	* Makefile.std:
	Added install target.

Tue Nov  9 16:07:08 1993  James Larus  ([e-mail])

	* mips-syscall.c spim-utils.c spim.c
	Did not set up argc and argv properly for -execute.  $sp now points
	to argc, even after double-word aligning stack.  Set up argv[0] for
	-execute in spim.  Added gethostname.
	[From: [e-mail] (Daniel Citron)]

Fri Nov  5 21:52:05 1993  James Larus  (larus@primost)

	* xspim.c, spim-utils.c:
	Printed message about loading trap handler.

Fri Nov  5 21:37:50 1993  James Larus  (larus@primost)

	* parser.y, spim-utils.c, Makefile.std, Imakefile:
	Fix parser so it works with bison as well as yacc.

Tue Oct 19 17:27:44 1993  James Larus  ([e-mail])

	* spim.tex:
	Figure showing stack frame format was incorrect: saved arguments
	listed in wrong order and arguments 1-4 missing [From: Frans Kaashoek
	<[e-mail]>]

Mon Oct  4 14:27:55 1993  James Larus  ([e-mail])

	* scanner.l sym_tbl.h sym_tbl.c
	All top-level input (Y_ID's) entered into symbol table.

	* parser.y
	Aligning data stored in text segment left label with symbol table
	address in data segment.

	* spim.c:
	Accidentally folded cases of symbols printed by "print" command.

Tue Sep 28 16:09:35 1993  James Larus  ([e-mail])

	* inst.c spim.c windows.c xspim.c inst.h spim.h parser.y:
	Purified spim & xspim to eliminate memory leaks!

Mon Aug 30 10:21:14 1993  James Larus  ([e-mail])

	* :
	VERSION 5.3 released.

	* Imakefile Makefile.std:
	Check that trap.handler is installed before running torture test to
	avoid cryptic error message.

Mon Aug 16 10:00:44 1993  James Larus  ([e-mail])

	* spim-utils.c:
	Find correct address to check for breakpoint before first instruction
	is executed [From: [e-mail]].

Fri Jul  2 10:32:18 1993  James Larus  ([e-mail])

	* README
	Added mention of Documentation/cycle.ps (documenation for cl-spim
	and cl-xspim.

Mon Jun 28 17:27:14 1993  James Larus  ([e-mail])

	* Changes from Scott Rosenberg to cl-spim:

1.) I fixed some problems with return values in mips-syscall.c

2.) I commented out a line that causes the continue_prompt window
to pop up when stepping through code in cl-xspim

3.) I've changed some of the help menus so that you can see the
cl-spim commands and only access them when running in cycle_level
mode.


Mon May 17 15:47:52 1993  James Larus  (larus at primost)

	* mips-syscall.c cl-cache.c cl-cycle.c cl-except.c cl-cache.h
	cl-expect.h
	Change from Scott Rosenberg:

there were some problems with the signal handling because somehow an
old (and incorrect version) of gun's signal stuff was merged with mine.
fixes to both cl-spim and spim code can be found in cl-except.[ch] and
mips-syscall.c.  the errors came about due to incorrect management of
spim's pseudo memory which resulted in seg violations.

i also fixed a one line problem in mips-syscall.c in old spim code so
that return values on exit when running an assembly file in cycle mode
would match values expected by cl-spim.  (i hadn't tested this until
someone sent me mail).