3 * Added c99 data-type compliance.
4 * Added general x86-64 support.
5 * Added win64 (x86-64 COFF) output format.
6 * Added __BITS__ standard macro.
7 * Added elf32 and elf64 output formats.
8 * Added Numeric constants in DQ directive.
9 * Added oword, do and reso pseudo operands.
10 * Added 8-bit floating-point format.
11 * Correct the generation of floating-point constants.
12 * Added Floating-point option control.
13 * Added Infinity and NaN floating point support.
14 * Added ELF Symbol Visibility support.
15 * Added Setting OSABI value in ELF header directive.
16 * Added Generate Makefile Dependencies option.
17 * Added Unlimited Optimization Passes option.
18 * Added %IFN and %ELIFN support.
19 * Added Logical Negation Operator.
20 * Enhanced Stack Relative Preprocessor Directives.
21 * Enhanced ELF Debug Formats.
22 * Enhanced Send Errors to a File option.
23 * Added SSSE3, SSE4.1, SSE4.2, SSE5 support.
24 * Added a large number of additional instructions.
25 * Significant performance improvements.
30 * fix outas86's .bss handling
31 * "make spotless" no longer deletes config.h.in.
32 * %(el)if(n)idn insensitivity to string quotes difference (#809300).
33 * (nasm.c) __OUTPUT_FORMAT__ changed to string value instead of symbol.
37 * Add Makefile for 16-bit DOS binaries under OpenWatcom, and modify
38 mkdep.pl to be able to generate completely pathless dependencies, as
39 required by OpenWatcom wmake (it supports path searches, but not
41 * Fix the STR instruction.
42 * Fix the ELF output format, which was broken under certain
43 circumstances due to the addition of stabs support.
44 * Quick-fix Borland format debug-info for -f obj
45 * Fix for %rep with no arguments (#560568)
46 * Fix concatenation of preprocessor function call (#794686)
47 * Fix long label causes coredump (#677841)
48 * Use autoheader as well as autoconf to keep configure from generating
49 ridiculously long command lines.
50 * Make sure that all of the formats which support debugging output
51 actually will suppress debugging output when -g not specified.
55 * Paths given in "-I" switch searched for "incbin"ed as
56 well as "%include"ed files.
57 * Added stabs debugging for the ELF output format, patch from
59 * Fix output/outbin.c to allow origin > 80000000h.
60 * Make -U switch work.
61 * Fix the use of relative offsets with explicit prefixes, e.g. "a32 loop foo".
62 * Remove "backslash()".
63 * Fix the SMSW and SLDT instructions.
64 * -O2 and -O3 are no longer aliases for -O10 and -O15. If you mean the
65 latter, please say so! :)
69 * Update rdoff - librarian/archiver - common rec - docs!
70 * Fix signed/unsigned problems.
71 * Fix JMP FAR label and CALL FAR label.
72 * Add new multisection support - map files - fix align bug
73 * Fix sysexit, movhps/movlps reg,reg bugs in insns.dat
74 * "Q" or "O" suffixes indicate octal
75 * Support Prescott new instructions (PNI).
76 * Cyrix XSTORE instruction.
80 * Fix build failure on 16-bit DOS (Makefile.bc3 workaround for compiler bug.)
81 * Fix dependencies and compiler warnings.
82 * Add "const" in a number of places.
83 * Add -X option to specify error reporting format (use -Xvc to
84 integrate with Microsoft Visual Studio.)
85 * Minor changes for code legibility.
86 * Drop use of tmpnam() in rdoff (security fix.)
90 * Correct additional address-size vs. operand-size confusions.
91 * Generate dependencies for all Makefiles automatically.
92 * Add support for unimplemented (but theoretically available)
93 registers such as tr0 and cr5. Segment registers 6 and 7 are called
94 segr6 and segr7 for the operations which they can be represented.
95 * Correct some disassembler bugs related to redundant address-size prefixes.
96 Some work still remains in this area.
97 * Correctly generate an error for things like "SEG eax".
98 * Add the JMPE instruction, enabled by "CPU IA64".
99 * Correct compilation on newer gcc/glibc platforms.
100 * Issue an error on things like "jmp far eax".
106 * New __NASM_PATCHLEVEL__ and __NASM_VERSION_ID__ standard macros to
107 round out the version-query macros. version.pl now understands
108 X.YYplWW or X.YY.ZZplWW as a version number, equivalent to
109 X.YY.ZZ.WW (or X.YY.0.WW, as appropriate).
110 * New keyword "strict" to disable the optimization of specific
112 * Fix the handing of size overrides with JMP instructions
113 (instructions such as "jmp dword foo".)
114 * Fix the handling of "ABSOLUTE label", where "label" points into a
116 * Fix OBJ output format with lots of externs.
117 * More documentation updates.
118 * Add -Ov option to get verbose information about optimizations.
119 * Undo a braindead change which broke %elif directives.
126 * Fix NASM crashing when %macro directives were left unterminated.
127 * Lots of documentation updates.
128 * Complete rewrite of the PostScript/PDF documentation generator.
129 * The MS Visual C++ Makefile was updated and corrected.
130 * Recognize .rodata as a standard section name in ELF.
131 * Fix some obsolete Perl4-isms in Perl scripts.
132 * Fix configure.in to work with autoconf 2.5x.
133 * Fix a couple of "make cleaner" misses.
134 * Make the normal "./configure && make" work with Cygwin.
140 * Correctly build in a separate object directory again.
141 * Derive all references to the version number from the version file.
142 * New standard macros __NASM_SUBMINOR__ and __NASM_VER__ macros.
143 * Lots of Makefile updates and bug fixes.
144 * New %ifmacro directive to test for multiline macros.
145 * Documentation updates.
146 * Fixes for 16-bit OBJ format output.
147 * Changed the NASM environment variable to NASMENV.
153 * Changed doc files a lot: completely removed old READMExx and
154 Wishlist files, incorporating all information in CHANGES and TODO.
155 * I waited a long time to rename zoutieee.c to (original) outieee.c
156 * moved all output modules to output/ subdirectory.
157 * Added 'make strip' target to strip debug info from nasm & ndisasm.
158 * Added INSTALL file with installation instructions.
159 * Added -v option description to nasm man.
160 * Added dist makefile target to produce source distributions.
161 * 16-bit support for ELF output format (GNU extension, but useful.)
167 * Fastcooked this for Debian's Woody release:
168 Frank applied the INCBIN bug patch to 0.98.25alt and called
169 it 0.98.28 to not confuse poor little apt-get.
175 * Reorganised files even better from 0.98.25alt
181 * Prettified the source tree. Moved files to more reasonable places.
182 * Added findleak.pl script to misc/ directory.
183 * Attempted to fix doc.
188 * Line continuation character '\'
189 * Docs inadvertantly reverted - "dos packaging".
195 * FIXME: Someone, document this please.
201 * Documentation - Ndisasm doc added to Nasm.doc.
207 * Attempted to remove rdoff version1
208 * Lino Mastrodomenico's patches to preproc.c (%$$ bug?).
214 * Update rdoff2 - attempt to remove v1.
220 * Optimization fixes.
226 * Optimization fixes.
232 * H. J. Lu's patch back out.
238 * Added ".rdata" to "-f win32".
244 * H. J. Lu's "bogus elf" patch. (Red Hat problem?)
250 * Fix whitespace before "[section ..." bug.
256 * Fix fixes to memory leaks.
262 * (there was no '.13)
267 * Update optimization (new function of "-O1")
268 * Changes to test/bintest.asm (?).
273 * Optimization changes.
275 * (there was no '.10)
280 * Add multiple sections support to "-f bin".
281 * Changed GLOBAL_TEMP_BASE in outelf.c from 6 to 15.
282 * Add "-v" as an alias to the "-r" switch.
283 * Remove "#ifdef" from Tasm compatibility options.
284 * Remove redundant size-overrides on "mov ds, ex", etc.
285 * Fixes to SSE2, other insns.dat (?).
286 * Enable uppercase "I" and "P" switches.
287 * Case insinsitive "seg" and "wrt".
288 * Update install.sh (?).
289 * Allocate tokens in blocks.
290 * Improve "invalid effective address" messages.
295 * Add "%strlen" and "%substr" macro operators
296 * Fixed broken c16.mac.
297 * Unterminated string error reported.
298 * Fixed bugs as per 0.98bf
301 0.98.09b with John Coffman patches released 28-Oct-2001
302 -------------------------------------------------------
304 Changes from 0.98.07 release to 98.09b as of 28-Oct-2001
306 * More closely compatible with 0.98 when -O0 is implied
307 or specified. Not strictly identical, since backward
308 branches in range of short offsets are recognized, and signed
309 byte values with no explicit size specification will be
310 assembled as a single byte.
312 * More forgiving with the PUSH instruction. 0.98 requires
313 a size to be specified always. 0.98.09b will imply the size
314 from the current BITS setting (16 or 32).
316 * Changed definition of the optimization flag:
318 -O0 strict two-pass assembly, JMP and Jcc are
319 handled more like 0.98, except that back-
320 ward JMPs are short, if possible.
322 -O1 strict two-pass assembly, but forward
323 branches are assembled with code guaranteed
324 to reach; may produce larger code than
325 -O0, but will produce successful assembly
326 more often if branch offset sizes are not
329 -O2 multi-pass optimization, minimize branch
330 offsets; also will minimize signed immed-
331 iate bytes, overriding size specification.
333 -O3 like -O2, but more passes taken, if needed
336 0.98.07 released 01/28/01
337 -------------------------
339 * Added Stepane Denis' SSE2 instructions to a *working*
340 version of the code - some earlier versions were based on
341 broken code - sorry 'bout that. version "0.98.07"
347 * Cosmetic modifications to nasm.c, nasm.h,
351 0.98.06f released 01/18/01
352 --------------------------
354 * - Add "metalbrain"s jecxz bug fix in insns.dat
355 - alter nasmdoc.src to match - version "0.98.06f"
358 0.98.06e released 01/09/01
359 --------------------------
361 * Removed the "outforms.h" file - it appears to be
362 someone's old backup of "outform.h". version "0.98.06e"
368 * fbk - finally added the fix for the "multiple %includes bug",
369 known since 7/27/99 - reported originally (?) and sent to
370 us by Austin Lunnen - he reports that John Fine had a fix
371 within the day. Here it is...
373 * Nelson Rush resigns from the group. Big thanks to Nelson for
374 his leadership and enthusiasm in getting these changes
375 incorporated into Nasm!
377 * fbk - [list +], [list -] directives - ineptly implemented, should
378 be re-written or removed, perhaps.
380 * Brian Raiter / fbk - "elfso bug" fix - applied to aoutb format
381 as well - testing might be desirable...
387 * James Seter - -postfix, -prefix command line switches.
388 * Yuri Zaporogets - rdoff utility changes.
394 * GAS-like palign (Panos Minos)
395 * FIXME: Someone, fill this in with details
399 ----------------------------------
401 * Fixed - elf and aoutb bug - shared libraries
402 - multiple "%include" bug in "-f obj"
404 - unrecognized option bug in ndisasm
406 0.98.03 with John Coffman's changes released 27-Jul-2000
407 --------------------------------------------------------
409 * Added signed byte optimizations for the 0x81/0x83 class
410 of instructions: ADC, ADD, AND, CMP, OR, SBB, SUB, XOR:
411 when used as 'ADD reg16,imm' or 'ADD reg32,imm.' Also
412 optimization of signed byte form of 'PUSH imm' and 'IMUL
413 reg,imm'/'IMUL reg,reg,imm.' No size specification is needed.
415 * Added multi-pass JMP and Jcc offset optimization. Offsets
416 on forward references will preferentially use the short form,
417 without the need to code a specific size (short or near) for
418 the branch. Added instructions for 'Jcc label' to use the
419 form 'Jnotcc $+3/JMP label', in cases where a short offset
420 is out of bounds. If compiling for a 386 or higher CPU, then
421 the 386 form of Jcc will be used instead.
423 This feature is controlled by a new command-line switch: "O",
424 (upper case letter O). "-O0" reverts the assembler to no
425 extra optimization passes, "-O1" allows up to 5 extra passes,
426 and "-O2"(default), allows up to 10 extra optimization passes.
428 * Added a new directive: 'cpu XXX', where XXX is any of:
429 8086, 186, 286, 386, 486, 586, pentium, 686, PPro, P2, P3 or
430 Katmai. All are case insensitive. All instructions will
431 be selected only if they apply to the selected cpu or lower.
432 Corrected a couple of bugs in cpu-dependence in 'insns.dat'.
434 * Added to 'standard.mac', the "use16" and "use32" forms of
435 the "bits 16/32" directive. This is nothing new, just conforms
436 to a lot of other assemblers. (minor)
438 * Changed label allocation from 320/32 (10000 labels @ 200K+)
439 to 32/37 (1000 labels); makes running under DOS much easier.
440 Since additional label space is allocated dynamically, this
441 should have no effect on large programs with lots of labels.
442 The 37 is a prime, believed to be better for hashing. (minor)
444 * Integrated patchfile 0.98-0.98.01. I call this version
445 0.98.03, for historical reasons: 0.98.02 was trashed.
447 --John Coffman <johninsd@san.rr.com> 27-Jul-2000
450 Kendall Bennett's SciTech MGL changes
451 -------------------------------------
452 Note that you must define "TASM_COMPAT" at compile-time
453 to get the Tasm Ideal Mode compatibility.
455 All changes can be compiled in and out using the TASM_COMPAT macros,
456 and when compiled without TASM_COMPAT defined we get the exact same
457 binary as the unmodified 0.98 sources.
459 standard.mac, macros.c:
460 . Added macros to ignore TASM directives before first include
463 . Added extern declaration for tasm_compatible_mode
466 . Added global variable tasm_compatible_mode
467 . Added command line switch for TASM compatible mode (-t)
468 . Changed version command line to reflect when compiled with TASM additions
469 . Added response file processing to allow all arguments on a single
470 line (response file is @resp rather than -@resp for NASM format).
473 . Changes islocal() macro to support TASM style @@local labels.
474 . Added islocalchar() macro to support TASM style @@local labels.
477 . Added support for TASM style memory references (ie: mov [DWORD eax],10
478 rather than the NASM style mov DWORD [eax],10).
481 . Added new directives, %arg, %local, %stacksize to directives table
482 . Added support for TASM style directives without a leading % symbol.
484 Integrated a block of changes from Andrew Zabolotny <bit@eltech.ru>:
486 * A new keyword %xdefine and its case-insensitive counterpart %ixdefine.
487 They work almost the same way as %define and %idefine but expand
488 the definition immediately, not on the invocation. Something like a cross
489 between %define and %assign. The "x" suffix stands for "eXpand", so
490 "xdefine" can be deciphered as "expand-and-define". Thus you can do
496 %xdefine %1 dword [esp+ofs]
500 * Changed the place where the expansion of %$name macros are expanded.
501 Now they are converted into ..@ctxnum.name form when detokenizing, so
502 there are no quirks as before when using %$name arguments to macros,
503 in macros etc. For example:
512 Now last line will be expanded into "hello" as expected. This also allows
513 for lots of goodies, a good example are extended "proc" macros included
516 * Added a check for "cstk" in smacro_defined() before calling get_ctx() -
517 this allows for things like:
522 to work without warnings even in no context.
524 * Added a check for "cstk" in %if*ctx and %elif*ctx directives -
525 this allows to use %ifctx without excessive warnings. If there is
526 no active context, %ifctx goes through "false" branch.
528 * Removed "user error: " prefix with %error directive: it just clobbers the
529 output and has absolutely no functionality. Besides, this allows to write
530 macros that does not differ from built-in functions in any way.
532 * Added expansion of string that is output by %error directive. Now you
535 %define hello(x) Hello, x!
538 %error "hello(%$name)"
540 Same happened with %include directive.
542 * Now all directives that expect an identifier will try to expand and
543 concatenate everything without whitespaces in between before usage.
544 For example, with "unfixed" nasm the commands
547 %define __%$abc goodbye
550 would produce "incorrect" output: last line will expand to
554 Not quite what you expected, eh? :-) The answer is that preprocessor
555 treats the %define construct as if it would be
557 %define __ %$abc goodbye
559 (note the white space between __ and %$abc). After my "fix" it
560 will "correctly" expand into
564 as expected. Note that I use quotes around words "correct", "incorrect"
565 etc because this is rather a feature not a bug; however current behaviour
566 is more logical (and allows more advanced macro usage :-).
568 Same change was applied to:
569 %push,%macro,%imacro,%define,%idefine,%xdefine,%ixdefine,
570 %assign,%iassign,%undef
572 * A new directive [WARNING {+|-}warning-id] have been added. It works only
573 if the assembly phase is enabled (i.e. it doesn't work with nasm -e).
575 * A new warning type: macro-selfref. By default this warning is disabled;
576 when enabled NASM warns when a macro self-references itself; for example
577 the following source:
579 [WARNING macro-selfref]
590 will produce a warning, but if we remove the first line we won't see it
591 anymore (which is The Right Thing To Do {tm} IMHO since C preprocessor
592 eats such constructs without warnings at all).
594 * Added a "error" routine to preprocessor which always will set ERR_PASS1
595 bit in severity_code. This removes annoying repeated errors on first
596 and second passes from preprocessor.
598 * Added the %+ operator in single-line macros for concatenating two
599 identifiers. Usage example:
601 %define _myfunc _otherfunc
602 %define cextern(x) _ %+ x
605 After first expansion, third line will become "_myfunc". After this
606 expansion is performed again so it becomes "_otherunc".
608 * Now if preprocessor is in a non-emmitting state, no warning or error
609 will be emmitted. Example:
614 put anything you want between these two brackets,
615 even macro-parameter references %1 or local labels %$zz
616 or macro-local labels %%zz - no warning will be emmitted.
619 * Context-local variables on expansion as a last resort are looked up
620 in outer contexts. For example, the following piece:
630 will expand correctly the fourth line to [esp]; if we'll define another
631 %$a inside the "inner" context, it will take precedence over outer
632 definition. However, this modification has been applied only to
633 expand_smacro and not to smacro_define: as a consequence expansion
634 looks in outer contexts, but %ifdef won't look in outer contexts.
636 This behaviour is needed because we don't want nested contexts to
637 act on already defined local macros. Example:
639 %define %$arg1 [esp+4]
645 In this example the "if" mmacro enters into the "if" context, so %$arg1
646 is not valid anymore inside "if". Of course it could be worked around
647 by using explicitely %$$arg1 but this is ugly IMHO.
649 * Fixed memory leak in %undef. The origline wasn't freed before
652 * Fixed trap in preprocessor when line expanded to empty set of tokens.
653 This happens, for example, in the following case:
662 All changes since NASM 0.98p3 have been produced by H. Peter Anvin <hpa@zytor.com>.
664 * The documentation comment delimiter is \# not #.
665 * Allow EQU definitions to refer to external labels; reported by
667 * Re-enable support for RDOFF v1; reported by Pedro Gimeno.
668 * Updated License file per OK from Simon and Julian.
674 * Update documentation (although the instruction set reference will
675 have to wait; I don't want to hold up the 0.98 release for it.)
676 * Verified that the NASM implementation of the PEXTRW and PMOVMSKB
677 instructions is correct. The encoding differs from what the Intel
678 manuals document, but the Pentium III behaviour matches NASM, not
680 * Fix handling of implicit sizes in PSHUFW and PINSRW, reported by
682 * Resurrect the -s option, which was removed when changing the
683 diagnostic output to stdout.
689 * Fix for "DB" when NASM is running on a bigendian machine.
690 * Invoke insns.pl once for each output script, making Makefile.in
692 * Improve the Unix configure-based makefiles to make package
694 * Included an RPM .spec file for building RPM (RedHat Package Manager)
695 packages on Linux or Unix systems.
696 * Fix Makefile dependency problems.
697 * Change src/rdsrc.pl to include sectioning information in info
698 output; required for install-info to work.
699 * Updated the RDOFF distribution to version 2 from Jules; minor
700 massaging to make it compile in my environment.
701 * Split doc files that can be built by anyone with a Perl interpreter off
702 into a separate archive.
703 * "Dress rehearsal" release!
709 * Fixed opcodes with a third byte-sized immediate argument to not
710 complain if given "byte" on the immediate.
711 * Allow %undef to remove single-line macros with arguments. This
712 matches the behaviour of #undef in the C preprocessor.
713 * Allow -d, -u, -i and -p to be specified as -D, -U, -I and -P for
714 compatibility with most C compilers and preprocessors. This allows
715 Makefile options to be shared between cc and nasm, for example.
717 * Went through the list of Katmai instructions and hopefully fixed the
718 (rather few) mistakes in it.
719 * (Hopefully) fixed a number of disassembler bugs related to ambiguous
720 instructions (disambiguated by -p) and SSE instructions with REP.
721 * Fix for bug reported by Mark Junger: "call dword 0x12345678" should
722 work and may add an OSP (affected CALL, JMP, Jcc).
723 * Fix for environments when "stderr" isn't a compile-time constant.
729 * Took officially over coordination of the 0.98 release; so drop
730 the p3.x notation. Skipped p4 and p5 to avoid confusion with John
731 Fine's J4 and J5 releases.
732 * Update the documentation; however, it still doesn't include
733 documentation for the various new instructions. I somehow wonder if
734 it makes sense to have an instruction set reference in the assembler
735 manual when Intel et al have PDF versions of their manuals online.
736 * Recognize "idt" or "centaur" for the -p option to ndisasm.
737 * Changed error messages back to stderr where they belong, but add an
738 -E option to redirect them elsewhere (the DOS shell cannot redirect
740 * -M option to generate Makefile dependencies (based on code from Alex
742 * %undef preprocessor directive, and -u option, that undefines a
744 * OS/2 Makefile (Mkfiles/Makefile.os2) for Borland under OS/2; from
746 * Various minor bugfixes (reported by):
747 - Dangling %s in preproc.c (Martin Junker)
748 * THERE ARE KNOWN BUGS IN SSE AND THE OTHER KATMAI INSTRUCTIONS. I am
749 on a trip and didn't bring the Katmai instruction reference, so I
750 can't work on them right now.
751 * Updated the License file per agreement with Simon and Jules to
752 include a GPL distribution clause.
758 * (Hopefully) fixed the canned Makefiles to include the outrdf2 and
760 * Renamed changes.asm to changed.asm.
766 * Fixed a bunch of instructions that were added in 0.98p3.5 which had
767 memory operands, and the address-size prefix was missing from the
774 * Merged in changes from John S. Fine's 0.98-J5 release. John's based
775 0.98-J5 on my 0.98p3.3 release; this merges the changes.
776 * Expanded the instructions flag field to a long so we can fit more
777 flags; mark SSE (KNI) and AMD or Katmai-specific instructions as
779 * Fix the "PRIV" flag on a bunch of instructions, and create new
780 "PROT" flag for protected-mode-only instructions (orthogonal to if
781 the instruction is privileged!) and new "SMM" flag for SMM-only
783 * Added AMD-only SYSCALL and SYSRET instructions.
784 * Make SSE actually work, and add new Katmai MMX instructions.
785 * Added a -p (preferred vendor) option to ndisasm so that it can
786 distinguish e.g. Cyrix opcodes also used in SSE. For example:
788 ndisasm -p cyrix aliased.bin
789 00000000 670F514310 paddsiw mm0,[ebx+0x10]
790 00000005 670F514320 paddsiw mm0,[ebx+0x20]
791 ndisasm -p intel aliased.bin
792 00000000 670F514310 sqrtps xmm0,[ebx+0x10]
793 00000005 670F514320 sqrtps xmm0,[ebx+0x20]
794 * Added a bunch of Cyrix-specific instructions.
800 * Made at least an attempt to modify all the additional Makefiles (in
801 the Mkfiles directory). I can't test it, but this was the best I
803 * DOS DJGPP+"Opus Make" Makefile from John S. Fine.
804 * changes.asm changes from John S. Fine.
810 * Patch from Conan Brink to allow nesting of %rep directives.
811 * If we're going to allow INT01 as an alias for INT1/ICEBP (one of
812 Jules 0.98p3 changes), then we should allow INT03 as an alias for INT3
814 * Updated changes.asm to include the latest changes.
815 * Tried to clean up the <CR>s that had snuck in from a DOS/Windows
816 environment into my Unix environment, and try to make sure than
817 DOS/Windows users get them back.
818 * We would silently generate broken tools if insns.dat wasn't sorted
819 properly. Change insns.pl so that the order doesn't matter.
820 * Fix bug in insns.pl (introduced by me) which would cause conditional
821 instructions to have an extra "cc" in disassembly, e.g. "jnz"
822 disassembled as "jccnz".
828 * Merged in John S. Fine's changes from his 0.98-J4 prerelease; see
829 http://www.csoft.net/cz/johnfine/
830 * Changed previous "spotless" Makefile target (appropriate for distribution)
831 to "distclean", and added "cleaner" target which is same as "clean"
832 except deletes files generated by Perl scripts; "spotless" is union.
833 * Removed BASIC programs from distribution. Get a Perl interpreter
835 * Calling this "pre-release 3.2" rather than "p3-hpa2" because of
836 John's contributions.
837 * Actually link in the IEEE output format (zoutieee.c); fix a bunch of
838 compiler warnings in that file. Note I don't know what IEEE output
839 is supposed to look like, so these changes were made "blind".
845 * Merged nasm098p3.zip with nasm-0.97.tar.gz to create a fully
846 buildable version for Unix systems (Makefile.in updates, etc.)
847 * Changed insns.pl to create the instruction tables in nasm.h and
848 names.c, so that a new instruction can be added by adding it *only*
850 * Added the following new instructions: SYSENTER, SYSEXIT, FXSAVE,
851 FXRSTOR, UD1, UD2 (the latter two are two opcodes that Intel
852 guarantee will never be used; one of them is documented as UD2 in
853 Intel documentation, the other one just as "Undefined Opcode" --
854 calling it UD1 seemed to make sense.)
855 * MAX_SYMBOL was defined to be 9, but LOADALL286 and LOADALL386 are 10
856 characters long. Now MAX_SYMBOL is derived from insns.dat.
857 * A note on the BASIC programs included: forget them. insns.bas is
858 already out of date. Get yourself a Perl interpreter for your
859 platform of choice at:
861 http://www.cpan.org/ports/index.html
867 added response file support, improved command line handling, new layout
870 fixed limit checking bug, 'OUT byte nn, reg' bug, and a couple of rdoff
871 related bugs, updated Wishlist; 0.98 Prerelease 3.
877 fixed bug in outcoff.c to do with truncating section names longer
878 than 8 characters, referencing beyond end of string; 0.98 pre-release 2
881 0.98 pre-released May 1999
882 --------------------------
884 Fixed a bug whereby STRUC didn't work at all in RDF.
886 Fixed a problem with group specification in PUBDEFs in OBJ.
888 Improved ease of adding new output formats. Contribution due to
891 Fixed a bug in relocations in the `bin' format: was showing up when
892 a relocatable reference crossed an 8192-byte boundary in any output
895 Fixed a bug in local labels: local-label lookups were inconsistent
896 between passes one and two if an EQU occurred between the definition
897 of a global label and the subsequent use of a local label local to
900 Fixed a seg-fault in the preprocessor (again) which happened when
901 you use a blank line as the first line of a multi-line macro
902 definition and then defined a label on the same line as a call to
905 Fixed a stale-pointer bug in the handling of the NASM environment
906 variable. Thanks to Thomas McWilliams.
908 ELF had a hard limit on the number of sections which caused
909 segfaults when transgressed. Fixed.
911 Added ability for ndisasm to read from stdin by using `-' as the
914 ndisasm wasn't outputting the TO keyword. Fixed.
916 Fixed error cascade on bogus expression in %if - an error in
917 evaluation was causing the entire %if to be discarded, thus creating
918 trouble later when the %else or %endif was encountered.
920 Forward reference tracking was instruction-granular not operand-
921 granular, which was causing 286-specific code to be generated
922 needlessly on code of the form `shr word [forwardref],1'. Thanks to
923 Jim Hague for sending a patch.
925 All messages now appear on stdout, as sending them to stderr serves
926 no useful purpose other than to make redirection difficult.
928 Fixed the problem with EQUs pointing to an external symbol - this
929 now generates an error message.
931 Allowed multiple size prefixes to an operand, of which only the first
932 is taken into account.
934 Incorporated John Fine's changes, including fixes of a large number
935 of preprocessor bugs, some small problems in OBJ, and a reworking of
936 label handling to define labels before their line is assembled, rather
939 Reformatted a lot of the source code to be more readable. Included
940 'coding.txt' as a guideline for how to format code for contributors.
942 Stopped nested %reps causing a panic - they now cause a slightly more
943 friendly error message instead.
945 Fixed floating point constant problems (patch by Pedro Gimeno)
947 Fixed the return value of insn_size() not being checked for -1, indicating
950 Incorporated 3D now instructions.
952 Fixed the 'mov eax, eax + ebx' bug.
954 Fixed the GLOBAL EQU bug in ELF. Released developers release 3.
956 Incorporated John Fine's command line parsing changes
958 Incorporated David Lindauer's OMF debug support
960 Made changes for LCC 4.0 support (__NASM_CDecl__, removed register size
961 specification warning when sizes agree).
963 Released NASM 0.98 Pre-release 1
966 0.97 released December 1997
967 ---------------------------
969 This was entirely a bug-fix release to 0.96, which seems to have got
972 Fixed stupid mistake in OBJ which caused `MOV EAX,<constant>' to
973 fail. Caused by an error in the `MOV EAX,<segment>' support.
975 ndisasm hung at EOF when compiled with lcc on Linux because lcc on
976 Linux somehow breaks feof(). ndisasm now does not rely on feof().
978 A heading in the documentation was missing due to a markup error in
981 Fixed failure to update all pointers on realloc() within extended-
982 operand code in parser.c. Was causing wrong behaviour and seg faults
983 on lines such as `dd 0.0,0.0,0.0,0.0,...'
985 Fixed a subtle preprocessor bug whereby invoking one multi-line
986 macro on the first line of the expansion of another, when the second
987 had been invoked with a label defined before it, didn't expand the
990 Added internal.doc back in to the distribution archives - it was
991 missing in 0.96 *blush*
993 Fixed bug causing 0.96 to be unable to assemble its own test files,
994 specifically objtest.asm. *blush again*
996 Fixed seg-faults and bogus error messages caused by mismatching
997 %rep and %endrep within multi-line macro definitions.
999 Fixed a problem with buffer overrun in OBJ, which was causing
1000 corruption at ends of long PUBDEF records.
1002 Separated DOS archives into main-program and documentation to reduce
1006 0.96 released November 1997
1007 ---------------------------
1009 Fixed a bug whereby, if `nasm sourcefile' would cause a filename
1010 collision warning and put output into `nasm.out', then `nasm
1011 sourcefile -o outputfile' still gave the warning even though the
1014 Fixed name pollution under Digital UNIX: one of its header files
1015 defined R_SP, which broke the enum in nasm.h.
1017 Fixed minor instruction table problems: FUCOM and FUCOMP didn't have
1018 two-operand forms; NDISASM didn't recognise the longer register
1019 forms of PUSH and POP (eg FF F3 for PUSH BX); TEST mem,imm32 was
1020 flagged as undocumented; the 32-bit forms of CMOV had 16-bit operand
1021 size prefixes; `AAD imm' and `AAM imm' are no longer flagged as
1022 undocumented because the Intel Architecture reference documents
1025 Fixed a problem with the local-label mechanism, whereby strange
1026 types of symbol (EQUs, auto-defined OBJ segment base symbols)
1027 interfered with the `previous global label' value and screwed up
1030 Fixed a bug whereby the stub preprocessor didn't communicate with
1031 the listing file generator, so that the -a and -l options in
1032 conjunction would produce a useless listing file.
1034 Merged `os2' object file format back into `obj', after discovering
1035 that `obj' _also_ shouldn't have a link pass separator in a module
1036 containing a non-trivial MODEND. Flat segments are now declared
1037 using the FLAT attribute. `os2' is no longer a valid object format
1040 Removed the fixed-size temporary storage in the evaluator. Very very
1041 long expressions (like `mov ax,1+1+1+1+...' for two hundred 1s or
1042 so) should now no longer crash NASM.
1044 Fixed a bug involving segfaults on disassembly of MMX instructions,
1045 by changing the meaning of one of the operand-type flags in nasm.h.
1046 This may cause other apparently unrelated MMX problems; it needs to
1047 be tested thoroughly.
1049 Fixed some buffer overrun problems with large OBJ output files.
1050 Thanks to DJ Delorie for the bug report and fix.
1052 Made preprocess-only mode actually listen to the %line markers as it
1053 prints them, so that it can report errors more sanely.
1055 Re-designed the evaluator to keep more sensible track of expressions
1056 involving forward references: can now cope with previously-nightmare
1062 Added the ALIGN and ALIGNB standard macros.
1064 Added PIC support in ELF: use of WRT to obtain the four extra
1065 relocation types needed.
1067 Added the ability for output file formats to define their own
1068 extensions to the GLOBAL, COMMON and EXTERN directives.
1070 Implemented common-variable alignment, and global-symbol type and
1071 size declarations, in ELF.
1073 Implemented NEAR and FAR keywords for common variables, plus
1074 far-common element size specification, in OBJ.
1076 Added a feature whereby EXTERNs and COMMONs in OBJ can be given a
1077 default WRT specification (either a segment or a group).
1079 Transformed the Unix NASM archive into an auto-configuring package.
1081 Added a sanity-check for people applying SEG to things which are
1082 already segment bases: this previously went unnoticed by the SEG
1083 processing and caused OBJ-driver panics later.
1085 Added the ability, in OBJ format, to deal with `MOV EAX,<segment>'
1086 type references: OBJ doesn't directly support dword-size segment
1087 base fixups, but as long as the low two bytes of the constant term
1088 are zero, a word-size fixup can be generated instead and it will
1091 Added the ability to specify sections' alignment requirements in
1092 Win32 object files and pure binary files.
1094 Added preprocess-time expression evaluation: the %assign (and
1095 %iassign) directive and the bare %if (and %elif) conditional. Added
1096 relational operators to the evaluator, for use only in %if
1097 constructs: the standard relationals = < > <= >= <> (and C-like
1098 synonyms == and !=) plus low-precedence logical operators &&, ^^ and
1101 Added a preprocessor repeat construct: %rep / %exitrep / %endrep.
1103 Added the __FILE__ and __LINE__ standard macros.
1105 Added a sanity check for number constants being greater than
1106 0xFFFFFFFF. The warning can be disabled.
1108 Added the %0 token whereby a variadic multi-line macro can tell how
1109 many parameters it's been given in a specific invocation.
1111 Added %rotate, allowing multi-line macro parameters to be cycled.
1113 Added the `*' option for the maximum parameter count on multi-line
1114 macros, allowing them to take arbitrarily many parameters.
1116 Added the ability for the user-level forms of EXTERN, GLOBAL and
1117 COMMON to take more than one argument.
1119 Added the IMPORT and EXPORT directives in OBJ format, to deal with
1122 Added some more preprocessor %if constructs: %ifidn / %ifidni (exact
1123 textual identity), and %ifid / %ifnum / %ifstr (token type testing).
1125 Added the ability to distinguish SHL AX,1 (the 8086 version) from
1126 SHL AX,BYTE 1 (the 286-and-upwards version whose constant happens to
1129 Added NetBSD/FreeBSD/OpenBSD's variant of a.out format, complete
1130 with PIC shared library features.
1132 Changed NASM's idiosyncratic handling of FCLEX, FDISI, FENI, FINIT,
1133 FSAVE, FSTCW, FSTENV, and FSTSW to bring it into line with the
1134 otherwise accepted standard. The previous behaviour, though it was a
1135 deliberate feature, was a deliberate feature based on a
1136 misunderstanding. Apologies for the inconvenience.
1138 Improved the flexibility of ABSOLUTE: you can now give it an
1139 expression rather than being restricted to a constant, and it can
1140 take relocatable arguments as well.
1142 Added the ability for a variable to be declared as EXTERN multiple
1143 times, and the subsequent definitions are just ignored.
1145 We now allow instruction prefixes (CS, DS, LOCK, REPZ etc) to be
1146 alone on a line (without a following instruction).
1148 Improved sanity checks on whether the arguments to EXTERN, GLOBAL
1149 and COMMON are valid identifiers.
1151 Added misc/exebin.mac to allow direct generation of .EXE files by
1152 hacking up an EXE header using DB and DW; also added test/binexe.asm
1153 to demonstrate the use of this. Thanks to Yann Guidon for
1154 contributing the EXE header code.
1156 ndisasm forgot to check whether the input file had been successfully
1157 opened. Now it does. Doh!
1159 Added the Cyrix extensions to the MMX instruction set.
1161 Added a hinting mechanism to allow [EAX+EBX] and [EBX+EAX] to be
1162 assembled differently. This is important since [ESI+EBP] and
1163 [EBP+ESI] have different default base segment registers.
1165 Added support for the PharLap OMF extension for 4096-byte segment
1169 0.95 released July 1997
1170 -----------------------
1172 Fixed yet another ELF bug. This one manifested if the user relied on
1173 the default segment, and attempted to define global symbols without
1174 first explicitly declaring the target segment.
1176 Added makefiles (for NASM and the RDF tools) to build Win32 console
1177 apps under Symantec C++. Donated by Mark Junker.
1179 Added `macros.bas' and `insns.bas', QBasic versions of the Perl
1180 scripts that convert `standard.mac' to `macros.c' and convert
1181 `insns.dat' to `insnsa.c' and `insnsd.c'. Also thanks to Mark
1184 Changed the diassembled forms of the conditional instructions so
1185 that JB is now emitted as JC, and other similar changes. Suggested
1186 list by Ulrich Doewich.
1188 Added `@' to the list of valid characters to begin an identifier
1191 Documentary changes, notably the addition of the `Common Problems'
1192 section in nasm.doc.
1194 Fixed a bug relating to 32-bit PC-relative fixups in OBJ.
1196 Fixed a bug in perm_copy() in labels.c which was causing exceptions
1197 in cleanup_labels() on some systems.
1199 Positivity sanity check in TIMES argument changed from a warning to
1200 an error following a further complaint.
1202 Changed the acceptable limits on byte and word operands to allow
1203 things like `~10111001b' to work.
1205 Fixed a major problem in the preprocessor which caused seg-faults if
1206 macro definitions contained blank lines or comment-only lines.
1208 Fixed inadequate error checking on the commas separating the
1209 arguments to `db', `dw' etc.
1211 Fixed a crippling bug in the handling of macros with operand counts
1212 defined with a `+' modifier.
1214 Fixed a bug whereby object file formats which stored the input file
1215 name in the output file (such as OBJ and COFF) weren't doing so
1216 correctly when the output file name was specified on the command
1219 Removed [INC] and [INCLUDE] support for good, since they were
1222 Fixed a bug in OBJ which caused all fixups to be output in 16-bit
1223 (old-format) FIXUPP records, rather than putting the 32-bit ones in
1224 FIXUPP32 (new-format) records.
1226 Added, tentatively, OS/2 object file support (as a minor variant on
1229 Updates to Fox Cutter's Borland C makefile, Makefile.bc2.
1231 Removed a spurious second fclose() on the output file.
1233 Added the `-s' command line option to redirect all messages which
1234 would go to stderr (errors, help text) to stdout instead.
1236 Added the `-w' command line option to selectively suppress some
1237 classes of assembly warning messages.
1239 Added the `-p' pre-include and `-d' pre-define command-line options.
1241 Added an include file search path: the `-i' command line option.
1243 Fixed a silly little preprocessor bug whereby starting a line with a
1244 `%!' environment-variable reference caused an `unknown directive'
1247 Added the long-awaited listing file support: the `-l' command line
1250 Fixed a problem with OBJ format whereby, in the absence of any
1251 explicit segment definition, non-global symbols declared in the
1252 implicit default segment generated spurious EXTDEF records in the
1255 Added the NASM environment variable.
1257 From this version forward, Win32 console-mode binaries will be
1258 included in the DOS distribution in addition to the 16-bit binaries.
1259 Added Makefile.vc for this purpose.
1261 Added `return 0;' to test/objlink.c to prevent compiler warnings.
1263 Added the __NASM_MAJOR__ and __NASM_MINOR__ standard defines.
1265 Added an alternative memory-reference syntax in which prefixing an
1266 operand with `&' is equivalent to enclosing it in square brackets,
1267 at the request of Fox Cutter.
1269 Errors in pass two now cause the program to return a non-zero error
1270 code, which they didn't before.
1272 Fixed the single-line macro cycle detection, which didn't work at
1273 all on macros with no parameters (caused an infinite loop). Also
1274 changed the behaviour of single-line macro cycle detection to work
1275 like cpp, so that macros like `extrn' as given in the documentation
1278 Fixed the implementation of WRT, which was too restrictive in that
1279 you couldn't do `mov ax,[di+abc wrt dgroup]' because (di+abc) wasn't
1280 a relocatable reference.
1283 0.94 released April 1997
1284 ------------------------
1286 Major item: added the macro processor.
1288 Added undocumented instructions SMI, IBTS, XBTS and LOADALL286. Also
1289 reorganised CMPXCHG instruction into early-486 and Pentium forms.
1290 Thanks to Thobias Jones for the information.
1292 Fixed two more stupid bugs in ELF, which were causing `ld' to
1293 continue to seg-fault in a lot of non-trivial cases.
1295 Fixed a seg-fault in the label manager.
1297 Stopped FBLD and FBSTP from _requiring_ the TWORD keyword, which is
1298 the only option for BCD loads/stores in any case.
1300 Ensured FLDCW, FSTCW and FSTSW can cope with the WORD keyword, if
1301 anyone bothers to provide it. Previously they complained unless no
1302 keyword at all was present.
1304 Some forms of FDIV/FDIVR and FSUB/FSUBR were still inverted: a
1305 vestige of a bug that I thought had been fixed in 0.92. This was
1306 fixed, hopefully for good this time...
1308 Another minor phase error (insofar as a phase error can _ever_ be
1309 minor) fixed, this one occurring in code of the form
1310 rol ax,forward_reference
1311 forward_reference equ 1
1313 The number supplied to TIMES is now sanity-checked for positivity,
1314 and also may be greater than 64K (which previously didn't work on
1317 Added Watcom C makefiles, and misc/pmw.bat, donated by Dominik Behr.
1319 Added the INCBIN pseudo-opcode.
1321 Due to the advent of the preprocessor, the [INCLUDE] and [INC]
1322 directives have become obsolete. They are still supported in this
1323 version, with a warning, but won't be in the next.
1325 Fixed a bug in OBJ format, which caused incorrect object records to
1326 be output when absolute labels were made global.
1328 Updates to RDOFF subdirectory, and changes to outrdf.c.
1331 0.93 released January 1997
1332 --------------------------
1334 This release went out in a great hurry after semi-crippling bugs
1337 Really _did_ fix the stack overflows this time. *blush*
1339 Had problems with EA instruction sizes changing between passes, when
1340 an offset contained a forward reference and so 4 bytes were
1341 allocated for the offset in pass one; by pass two the symbol had
1342 been defined and happened to be a small absolute value, so only 1
1343 byte got allocated, causing instruction size mismatch between passes
1344 and hence incorrect address calculations. Fixed.
1346 Stupid bug in the revised ELF section generation fixed (associated
1347 string-table section for .symtab was hard-coded as 7, even when this
1348 didn't fit with the real section table). Was causing `ld' to
1349 seg-fault under Linux.
1351 Included a new Borland C makefile, Makefile.bc2, donated by Fox
1352 Cutter <lmb@comtch.iea.com>.
1355 0.92 released January 1997
1356 --------------------------
1358 The FDIVP/FDIVRP and FSUBP/FSUBRP pairs had been inverted: this was
1359 fixed. This also affected the LCC driver.
1361 Fixed a bug regarding 32-bit effective addresses of the form
1362 [other_register+ESP].
1364 Documentary changes, notably documentation of the fact that Borland
1365 Win32 compilers use `obj' rather than `win32' object format.
1367 Fixed the COMENT record in OBJ files, which was formatted
1370 Fixed a bug causing segfaults in large RDF files.
1372 OBJ format now strips initial periods from segment and group
1373 definitions, in order to avoid complications with the local label
1376 Fixed a bug in disassembling far calls and jumps in NDISASM.
1378 Added support for user-defined sections in COFF and ELF files.
1380 Compiled the DOS binaries with a sensible amount of stack, to
1381 prevent stack overflows on any arithmetic expression containing
1384 Fixed a bug in handling of files that do not terminate in a newline.
1387 0.91 released November 1996
1388 ---------------------------
1391 Support for RDF added.
1392 Support for DBG debugging format added.
1393 Support for 32-bit extensions to Microsoft OBJ format added.
1394 Revised for Borland C: some variable names changed, makefile added.
1395 LCC support revised to actually work.
1396 JMP/CALL NEAR/FAR notation added.
1397 `a16', `o16', `a32' and `o32' prefixes added.
1398 Range checking on short jumps implemented.
1399 MMX instruction support added.
1400 Negative floating point constant support added.
1401 Memory handling improved to bypass 64K barrier under DOS.
1402 $ prefix to force treatment of reserved words as identifiers added.
1403 Default-size mechanism for object formats added.
1404 Compile-time configurability added.
1405 `#', `@', `~' and `?' are now valid characters in labels.
1406 `-e' and `-k' options in NDISASM added.
1409 0.90 released October 1996
1410 --------------------------
1412 First release version. First support for object file output. Other
1413 changes from previous version (0.3x) too numerous to document.
projects / platform / upstream / nasm.git / blob