changelog

用汇编语言编程源代码

2003-01-04    <larus@HomeMachine>

	* spim.c PCSpimView.cpp:
	If started with only one argument, assume it is a file
	name. [From: Armin Mueller [[e-mail]]]

	* :
	Added Alt-F4 shortcut to PCSpim.

	* trap.handler:
	Return to instruction at EPC on interrupt. Comment code
	better. [From: Nuno Lau [mailto:[e-mail]]]

	* spim.c:
	Partioned print_reg into 3 cases, to avoid casting int to char* on
	64 bit machine. [From: Ken Swarner [mailto:[e-mail]]]

	* spim.html:
	Cleaned up file and added installation instructions.

2003-01-03    <larus@HomeMachine>

	* README:
	Typo in README. [From: Ian Langworth [[e-mail]]]

2003-01-01    <larus@HomeMachine>

	* run.c:
	Got (real!) hardware exception on integer overflow in
	division. [From: Deborah Ariel Pickett
	[[e-mail]]]

	* xspim.c:
	-trap_file did not properly parse argument in xspim. [From:
	William Waite [[e-mail]]]

	* scanner.l:
	Fixed printing of error on last line without a carriage
	return. [From: Max Hailperin [[e-mail]]]

	* display-utils.c:
	Print proper registers when printing hex FP numbers. [From: Armin
	Mueller [[e-mail]]]

	* mem.c:
	Properly zero newly allocated memory. [From: Guillaume Melquiond
	[[e-mail]], Bill Siever [[e-mail], Diego Billi
	[[e-mail]], Alberto Montresor [[e-mail]],
	Max Gilbert [[e-mail]]] Konrad Rymuza [[e-mail]]

	* SettingsDlg.cpp:
	Set delayed branch & load check box when bare check box is
	checked. [From: Marco Cova [[e-mail]]]

	* trap.handler:
	Added nops (addu $0, $0, 0) to trap handler, so that it works
	properly in bare mode! [From: Marco Cova [[e-mail]]]

	* sym-tbl.c:
	Avoid null ref when there is no instruction in memory before a
	load instruction. [From: Steven Borkman [[e-mail]]]

	* spim.html:
	Removed reference to spimwin.ps since file disappeared (.pdf
	remains) [From: [e-mail]]

	* PCSPIM.HLP:
	File was corrupted.

2002-01-12    <larus@HomeMachine>

	* Release SPIM 6.4a

	* spim.html:
	Update with latest info.

	* mips-syscall.c:
	Use unix read/write/open/close not just windows
	_read/_write/_open/_close.

	* xspim.h xspim.c:
	Bad function prototypes.

2002-01-01    <larus@HomeMachine>

	* Release SPIM 6.4

	* PCSpimView.cpp:
	Ensure that register and data segment windows do not shift focus
	when underlying values change.  [From: Vollmar, Kenneth R
	[e-mail]]

	* parser.y tt.le.s:
	Fixed translation of USH to eliminate side-effect and warning.

	* mips-syscall.c:
	Eliminated compiler warnings at high warning level.

	* mips-syscall.c spim-syscall.h:
	Added open/close read/write system calls. [From: Doug Johnson
	[e-mail]]

	* Configure:
	Added entries for Mac OSX. [From: Jeffrey Naset [e-mail]]

2001-12-24    <larus@HomeMachine>

	* parser.y:
	Translation of USH pseudo-op used register $1 twice, which didn't
	work. Changed it so it modifies its first argument instead (and
	issued warning of side effect).

	* PCSpimView.cpp:
	Report parser warnings distinct from errors.

	* parser.y:
	REM pseudo-op requires 3 arguments. [From: Rigel [e-mail]]

	* ConsoleWnd.h:
	Return window's content as a string so it can be dumped to a
	file. [From: Bill Siever [e-mail]]

	* parser.y inst.h tt.le.s tt.be.s:
	Make LUI's immediate unsigned (since it is not sign
	extended). [From: Georgia Grant [e-mail]]

	* SpimSupport.cpp:
	Check that buffer in read_input is not null and that size is
	reasonable. [From:  [e-mail]]

	* scanner.l:
	Buffer overrun when handling bad input terminated by EOF rather
	than \nl. [From: Max Hailperin [e-mail]]

	* spim-utils.c:
	Symbol "main" was not marked as global in the symbol table. [From:
	J. P. Mellor [e-mail]]

	* mem.c:
	Zero newly allocated data byte-by-byte, to avoid zapping data in
	last word of non-word aligned data area. [From: Peter Gammie
	[e-mail]]

	* scanner.l:
	Properly handle characters overwritten by null in scanner when
	looking for the end of the current line.  [From:
	[e-mail]]

	* sym-tbl.c tt.le.s tt.be.s:
	Did not properly check that high-order 4 bits in jump
	instruction's PC match corresponding bits in target instruction's
	PC.

	* parser.y:
	Eliminated reduce/reduce conflict in div instruction.

	* Makefile.cygwin:
	Added -g flag. Changed from yacc to bison. Changed "diff" to "diff
	-w" to ignore cr/lf differences.

2001-02-08    <larus@HomeMachine>

	* parser.y:
	Did not handle rem pseudo op properly, which caused a fatal error
	or core dump. [From: Rigel Freden]

2001-02-01    <larus@HomeMachine>

	* spim.c spim.h trap.handler:
	Added commands to dump text segment (in binary). [From: Brian
	R. Gaeke [e-mail]]

	* buttons.c:
	Allow character literal in set-value dialog box. [From: Brian
	R. Gaeke [e-mail]]

	* mips-syscall.c spim-syscall.h Documentation\spim.tex:
	Added system call to print a character and read a character.
	[From: Brian R. Gaeke [e-mail]]

	* xspim.c xspim.h buttons.c:
	Add button to clear xspim console. [From: Brian R. Gaeke
	[e-mail]].

2001-01-14    <larus@HomeMachine>

	* spim.c:
	Fix print_all_regs to define the stack allocated buffer's length
	as a constant, not a variable.  This wasn't ANSI C and upset Sun's
	compiler. [From: [e-mail]]

2000-12-25    <larus@HomeMachine>

	* Release 6.3.

	* IMakefile, Makefile.cygwin Makefile.st:
	Rename SH to CSH.

2000-12-24    <larus@HomeMachine>

	* Makefile.std:
	Set defaults to work under Linux.

2000-12-23    <larus@HomeMachine>

	* MainFrm.cpp MainFrm.cpp PCSpim.cpp:
	When frame resized, resize panes.

2000-12-22    <larus@HomeMachine>

	* PCView.cpp:
	Refresh all windows before initialization finished when user had
	to respecify trap handler location through dialog box.

	* Makefile.cygwin:
	Remove .exe files.

	* scanner.l:
	Ignore carrage returns in input files.

	* Imakefile:
	Explicitly set SH=csh, since stderr redirection does not work in sh.

2000-12-10    <larus@HomeMachine>

	* xspim.man:
	Missing quotes screwed up formatting. [From: Robert Greenfield
	([e-mail])]

	* scanner.l (source_line):
	Include comments from source in SPIM comments. [From: John Bruce
	Zuckerman ([e-mail])]

	* mem.c (bad_mem_read):
	Printing of instruction bits failed when no instruction at
	address. [From: John Bruce Zuckerman ([e-mail])]

	* spim.h display-utils.c mips-syscall.c run.c:
	Handle display of stack better when $sp points to non-word
	boundary. [Matt Simmons, ([e-mail])]

	* parser.y:
	Change generated NOP to sll $0, $0, 0 to be consistent. [From:
	Robert Greenfield ([e-mail])]

	* inst.c (i_type_inst_full_word and resolve_a_label_sub):
	Sign-extension fixup code for high 16 bits of lw/sw added fixup
	twice into instruction immediate field. [From: Robert Greenfield
	([e-mail]) and Christian R Ward]

	(produce_immediate):
	Missed optimization of loading immediate with zero high 16
	bits. [From: Robert Greenfield ([e-mail]) and Christian R
	Ward]

2000-12-07    <larus@HomeMachine>

	* sys-table.c (resolve_a_label_sub):
	Correct binary encoding of negative offsets in branch instructions
	(high 2 bits were 0). [From: Jim Frenzel ([e-mail]) and
	others]

	* mips-syscall.c (do_syscall)
	Print single and double precision registers to up to 18 digits,
	not default 6 digits of precision. [From: [e-mail]]

2000-12-06    <larus@HomeMachine>

	* spim.c (print_all_regs):
	Added spim command to print all registers. [From: Linus Akerlund]

2000-12-05    <larus@HomeMachine>

	* Tests/tt.le.s Tests/tt.be.s:
	Fix regression tests to work with stricter parser and changes to spim.

	* Makefile.std Imakefile:
	Change "csh" to an environment variable so shell can be changed.

	* spim.c (console_input_available):
	Comment out code to compile spim under cygwin on windows.

	* spim-utils.c (read_assembly_file):
	Open file as text (for windows).

	* run.c (run_spim):
	LWL failed with gcc (cygwin) because missing parens screwed
	associativity.

2000-12-04    <larus@HomeMachine>

	* parser.y scanner.l inst.h tt.be.s tt.le.s
	Validate range of immediate values in non-pseudo instruction and
	warn if too large. [From: David Kessner [e-mail]]

Mon Jan 11 23:53:33 1999  James Larus  <[e-mail]>

	* tt.be.s tt.le.s:
	New tests from PC port.

	* parser.y scanner.l inst.c:
	New EOF code did not work with bison, which does not allow a
	non-terminal with the value 0.

1999-01-07  Jim Larus  <[e-mail]>

	* spim.c xspim.c:
	Report undefined symbols before running program.

1998-12-16    <larus@HomeMachine>

	* Pervasive:
	Update copyright.

1998-12-14    <larus@HomeMachine>

	* parser.y:
	Allow pseudo ops with -pseudo flg.

	* parser.y parser.h sym-tbl.c spim.h spim-utils.c sym-tbl.h
	Test/tt.be.s:
	Bogus main undefined error if parser failed before main.

	* mem.c:
	Shift was incorrect.

	* spim.h:
	Redefine 1000K as K * K.

1998-12-14    <larus@HomeMachine>

	* mem.c:
	Force redraw of screen after updating text/data in bad address
	handler.

	* sym-tbl.c:
	Did not adjust high 16 bits in forward ref to symbol in LW/ST
	inststruction.

	* mips-syscal.c:
	Force redisplay of data segment after readining string or sbrk.

1998-12-14    <larus@HomeMachine>

	* display-utils.c:
	Change floating point format to increase precision and always
	print decimal point.

1998-12-13    <larus@HomeMachine>

	* inst.{c,h} spim.h run.c:
	Negative branch displacements handled inconsistently (shift
	before/after sign extend).

1998-12-07    <larus@HomeMachine>

	* spim-utils.c sym-tbl.c parser.y:
	Predefine main as global.  Fix symbol table initialization.

	* spim.c sym-tbl.{c,h} display-utils.c PCSpim.rc PCSpimView.cpp
	resourc.h RunDlg.cpp RunDlg.h SettingsDlg.cpp SpimReg.h:
	Print undefined symbols before running program.

1998-12-05    <larus@HomeMachine>

	* parser.y:
	Last line was not parsed if it did not end with newline.

1998-12-02    <larus@HomeMachine>

	* pcspim.ncb pcspim.dsp pcspim.plg pcspim.opt lex.yy.c parser.y:
	Invoke yacc and lex from within VS.

1998-12-01    <larus@HomeMachine>

	* pcspim.dsp pcspim.opt PCSpimView.cpp pcspim.plg xspim.c
	spim-utils.h display-utils.h:
	Share common code for formating machine contents.

1998-11-22    <larus@HomeMachine>

	* pcspim.dsp PCSpim.clw PCSpim.aps MakeHelp.bat PCSpim.hpj
	pcspim.plg pcspim.opt pcspim.ncb:
	Fix helfile compile.

	* pcspim.plg PCSPIMView.cpp:
	Default printing FP registers to FP format.

	* pcspim.dsp pcspim.plg pcspim.opt mem.c inst.h inst.c sym-tbl.c
	scanner.l:
	Eliminated warnings from VC6.0 at level 4.

Wed Jan 14 14:46:10 1998  James Larus  <[e-mail]>

	* run.c mem.c inst.c data.c:
	Eliminate warnings from VC5.0.

	* run.c spim-utils.c spim.c:
	Minor changes from David Curley's DOS port.

Tue Dec 30 12:17:11 1997  James Larus  <[e-mail]>

	* README:
	Clarify installation instructions. [From: Deborah Bennett
	<[e-mail]>]

	* Imakefile:
	Make Imakefile and Makefile.std writable before tar'ing. [From:
	Deborah Bennett <[e-mail]>]

	* Configure:
	Added CC environment variable to allow selection of
	compiler. [From: Deborah Bennett <[e-mail]>]

	* scanner.l:
	Reverse includes for Debian Linux. [From: Bennet Yee
	<[e-mail]>]

	* parser.y:
	Fix parser so that label: <syntax error> did not cause parser to
	skip the rest of input. [From: Bennet Yee <[e-mail]>]

	* spim.c (print_reg):
	Change format for printing FP registers to %g (from %f) so all
	bits are displayed. [From: "Jason Baumbach"
	<[e-mail]>]

	* inst.c (i_type_inst):
	Operands between 2^15 and 2^16 to immediate instructions (eg addi)
	were treated as negative (signed) numbers. [From:
	[e-mail] (Jamie Scuglia)]

Wed Dec  3 14:15:35 1997  James Larus  <[e-mail]>

	* spim.c (write_output):
	Could flush wrong file with bad descriptor.

Sat Nov 29 17:16:35 1997  James Larus  <[e-mail]>

	* mem.h:
	Fix declarations in MEM_ADDRESS (changed for Alpha) that broke old
	(pre-ANSI) Sun compiler. [From: Laura Spoldi <[e-mail]>]

Mon Nov 10 10:34:53 1997  James Larus  <[e-mail]>

	* Documentation/spim.tex:
	Document that registers are 32-bits with. [From: William Waite  <[e-mail]>]

Mon Oct 20 15:09:34 1997  James Larus  <[e-mail]>

	* Makefile.std:
	Added memory size and other defines back to default makefile.

Mon Jul 21 13:12:00 1997  James Larus  <[e-mail]>

	* Version 6.0 released.

	* BLURB run.c spim-utils.c sym-tbl.c:
	Changes by DAC.

Wed Jul  9 09:00:41 1997  James Larus  <[e-mail]>

	* Imakefile Makefile.std buttons.c inst. hmem.c mips-syscall.c
	reg.h spim-utils.c spim.c spim.h sym-tbl.c xspim.c xspim.h:
	Eliminate the cl-spim code since I don't want to support it and it
	will not run on the PCs.

	* buttons.c data.c inst.c mem.c mips-syscall.c spim-utils.c spim.c
	sym-tbl.c windows.c xspim.c inst.h mem.h reg.h scanner.h spim.h
	parser.y scanner.l:
	Changes for DEC Alpha systems. [From: Robert Moniot
	<[e-mail]>]

	* spim.c xspim.c:
	The flag -trap_file implies -trap.

	* Imakefile Makefile.std README buttons.c cl-cycle.c data.c
	mips-syscall.c run.c spim-utils.c spim.c xspim.c: