3 * Additional fixes for MMX operands with explicit "qword", as well as
4 (hopefully) SSE operands with "oword".
5 * Fix handling of truncated strings with DO.
6 * Fix segfaults due to memory overwrites when floating-point constants
8 * Fix segfaults due to missing include files.
9 * Fix OpenWatcom Makefiles for DOS and OS/2.
10 * Add autogenerated instruction list back into the documentation.
11 * ELF: Fix segfault when generating stabs, and no symbols have been
13 * ELF: Experimental support for DWARF debugging information.
14 * New compile date and time standard macros.
15 * %ifnum now returns true for negative numbers.
16 * New %iftoken test for a single token.
17 * New %ifempty test for empty expansion.
18 * Add support for the XSAVE instruction group.
19 * Makefile for Netware/gcc.
20 * Fix issue with some warnings getting emitted way too many times.
21 * Autogenerated instruction list added to the documentation.
25 * Fix the handling of MMX registers with explicit "qword" tags on
26 memory (broken in 2.00 due to 64-bit changes.)
27 * Fix the PREFETCH instructions.
28 * Fix the documentation.
29 * Fix debugging info when using "-f elf" (backwards alias for "-f
31 * Man pages for rdoff tools (from the Debian project.)
32 * ELF: handle large numbers of sections.
33 * Fix corrupt output when the optimizer runs out of passes.
37 * Added c99 data-type compliance.
38 * Added general x86-64 support.
39 * Added win64 (x86-64 COFF) output format.
40 * Added __BITS__ standard macro.
41 * Renamed the elf output format to elf32 for clarity.
42 * Added elf64 and macho (MacOS X) output formats.
43 * Added Numeric constants in DQ directive.
44 * Added oword, do and reso pseudo operands.
45 * Allow underscores in numbers.
46 * Added 8-, 16- and 128-bit floating-point formats.
47 * Added binary, octal and hexadecimal floating-point.
48 * Correct the generation of floating-point constants.
49 * Added Floating-point option control.
50 * Added Infinity and NaN floating point support.
51 * Added ELF Symbol Visibility support.
52 * Added Setting OSABI value in ELF header directive.
53 * Added Generate Makefile Dependencies option.
54 * Added Unlimited Optimization Passes option.
55 * Added %IFN and %ELIFN support.
56 * Added Logical Negation Operator.
57 * Enhanced Stack Relative Preprocessor Directives.
58 * Enhanced ELF Debug Formats.
59 * Enhanced Send Errors to a File option.
60 * Added SSSE3, SSE4.1, SSE4.2, SSE5 support.
61 * Added a large number of additional instructions.
62 * Significant performance improvements.
67 * fix outas86's .bss handling
68 * "make spotless" no longer deletes config.h.in.
69 * %(el)if(n)idn insensitivity to string quotes difference (#809300).
70 * (nasm.c) __OUTPUT_FORMAT__ changed to string value instead of symbol.
74 * Add Makefile for 16-bit DOS binaries under OpenWatcom, and modify
75 mkdep.pl to be able to generate completely pathless dependencies, as
76 required by OpenWatcom wmake (it supports path searches, but not
78 * Fix the STR instruction.
79 * Fix the ELF output format, which was broken under certain
80 circumstances due to the addition of stabs support.
81 * Quick-fix Borland format debug-info for -f obj
82 * Fix for %rep with no arguments (#560568)
83 * Fix concatenation of preprocessor function call (#794686)
84 * Fix long label causes coredump (#677841)
85 * Use autoheader as well as autoconf to keep configure from generating
86 ridiculously long command lines.
87 * Make sure that all of the formats which support debugging output
88 actually will suppress debugging output when -g not specified.
92 * Paths given in "-I" switch searched for "incbin"ed as
93 well as "%include"ed files.
94 * Added stabs debugging for the ELF output format, patch from
96 * Fix output/outbin.c to allow origin > 80000000h.
97 * Make -U switch work.
98 * Fix the use of relative offsets with explicit prefixes, e.g. "a32 loop foo".
99 * Remove "backslash()".
100 * Fix the SMSW and SLDT instructions.
101 * -O2 and -O3 are no longer aliases for -O10 and -O15. If you mean the
102 latter, please say so! :)
106 * Update rdoff - librarian/archiver - common rec - docs!
107 * Fix signed/unsigned problems.
108 * Fix JMP FAR label and CALL FAR label.
109 * Add new multisection support - map files - fix align bug
110 * Fix sysexit, movhps/movlps reg,reg bugs in insns.dat
111 * "Q" or "O" suffixes indicate octal
112 * Support Prescott new instructions (PNI).
113 * Cyrix XSTORE instruction.
117 * Fix build failure on 16-bit DOS (Makefile.bc3 workaround for compiler bug.)
118 * Fix dependencies and compiler warnings.
119 * Add "const" in a number of places.
120 * Add -X option to specify error reporting format (use -Xvc to
121 integrate with Microsoft Visual Studio.)
122 * Minor changes for code legibility.
123 * Drop use of tmpnam() in rdoff (security fix.)
127 * Correct additional address-size vs. operand-size confusions.
128 * Generate dependencies for all Makefiles automatically.
129 * Add support for unimplemented (but theoretically available)
130 registers such as tr0 and cr5. Segment registers 6 and 7 are called
131 segr6 and segr7 for the operations which they can be represented.
132 * Correct some disassembler bugs related to redundant address-size prefixes.
133 Some work still remains in this area.
134 * Correctly generate an error for things like "SEG eax".
135 * Add the JMPE instruction, enabled by "CPU IA64".
136 * Correct compilation on newer gcc/glibc platforms.
137 * Issue an error on things like "jmp far eax".
143 * New __NASM_PATCHLEVEL__ and __NASM_VERSION_ID__ standard macros to
144 round out the version-query macros. version.pl now understands
145 X.YYplWW or X.YY.ZZplWW as a version number, equivalent to
146 X.YY.ZZ.WW (or X.YY.0.WW, as appropriate).
147 * New keyword "strict" to disable the optimization of specific
149 * Fix the handing of size overrides with JMP instructions
150 (instructions such as "jmp dword foo".)
151 * Fix the handling of "ABSOLUTE label", where "label" points into a
153 * Fix OBJ output format with lots of externs.
154 * More documentation updates.
155 * Add -Ov option to get verbose information about optimizations.
156 * Undo a braindead change which broke %elif directives.
163 * Fix NASM crashing when %macro directives were left unterminated.
164 * Lots of documentation updates.
165 * Complete rewrite of the PostScript/PDF documentation generator.
166 * The MS Visual C++ Makefile was updated and corrected.
167 * Recognize .rodata as a standard section name in ELF.
168 * Fix some obsolete Perl4-isms in Perl scripts.
169 * Fix configure.in to work with autoconf 2.5x.
170 * Fix a couple of "make cleaner" misses.
171 * Make the normal "./configure && make" work with Cygwin.
177 * Correctly build in a separate object directory again.
178 * Derive all references to the version number from the version file.
179 * New standard macros __NASM_SUBMINOR__ and __NASM_VER__ macros.
180 * Lots of Makefile updates and bug fixes.
181 * New %ifmacro directive to test for multiline macros.
182 * Documentation updates.
183 * Fixes for 16-bit OBJ format output.
184 * Changed the NASM environment variable to NASMENV.
190 * Changed doc files a lot: completely removed old READMExx and
191 Wishlist files, incorporating all information in CHANGES and TODO.
192 * I waited a long time to rename zoutieee.c to (original) outieee.c
193 * moved all output modules to output/ subdirectory.
194 * Added 'make strip' target to strip debug info from nasm & ndisasm.
195 * Added INSTALL file with installation instructions.
196 * Added -v option description to nasm man.
197 * Added dist makefile target to produce source distributions.
198 * 16-bit support for ELF output format (GNU extension, but useful.)
204 * Fastcooked this for Debian's Woody release:
205 Frank applied the INCBIN bug patch to 0.98.25alt and called
206 it 0.98.28 to not confuse poor little apt-get.
212 * Reorganised files even better from 0.98.25alt
218 * Prettified the source tree. Moved files to more reasonable places.
219 * Added findleak.pl script to misc/ directory.
220 * Attempted to fix doc.
225 * Line continuation character '\'
226 * Docs inadvertantly reverted - "dos packaging".
232 * FIXME: Someone, document this please.
238 * Documentation - Ndisasm doc added to Nasm.doc.
244 * Attempted to remove rdoff version1
245 * Lino Mastrodomenico's patches to preproc.c (%$$ bug?).
251 * Update rdoff2 - attempt to remove v1.
257 * Optimization fixes.
263 * Optimization fixes.
269 * H. J. Lu's patch back out.
275 * Added ".rdata" to "-f win32".
281 * H. J. Lu's "bogus elf" patch. (Red Hat problem?)
287 * Fix whitespace before "[section ..." bug.
293 * Fix fixes to memory leaks.
299 * (there was no '.13)
304 * Update optimization (new function of "-O1")
305 * Changes to test/bintest.asm (?).
310 * Optimization changes.
312 * (there was no '.10)
317 * Add multiple sections support to "-f bin".
318 * Changed GLOBAL_TEMP_BASE in outelf.c from 6 to 15.
319 * Add "-v" as an alias to the "-r" switch.
320 * Remove "#ifdef" from Tasm compatibility options.
321 * Remove redundant size-overrides on "mov ds, ex", etc.
322 * Fixes to SSE2, other insns.dat (?).
323 * Enable uppercase "I" and "P" switches.
324 * Case insinsitive "seg" and "wrt".
325 * Update install.sh (?).
326 * Allocate tokens in blocks.
327 * Improve "invalid effective address" messages.
332 * Add "%strlen" and "%substr" macro operators
333 * Fixed broken c16.mac.
334 * Unterminated string error reported.
335 * Fixed bugs as per 0.98bf
338 0.98.09b with John Coffman patches released 28-Oct-2001
339 -------------------------------------------------------
341 Changes from 0.98.07 release to 98.09b as of 28-Oct-2001
343 * More closely compatible with 0.98 when -O0 is implied
344 or specified. Not strictly identical, since backward
345 branches in range of short offsets are recognized, and signed
346 byte values with no explicit size specification will be
347 assembled as a single byte.
349 * More forgiving with the PUSH instruction. 0.98 requires
350 a size to be specified always. 0.98.09b will imply the size
351 from the current BITS setting (16 or 32).
353 * Changed definition of the optimization flag:
355 -O0 strict two-pass assembly, JMP and Jcc are
356 handled more like 0.98, except that back-
357 ward JMPs are short, if possible.
359 -O1 strict two-pass assembly, but forward
360 branches are assembled with code guaranteed
361 to reach; may produce larger code than
362 -O0, but will produce successful assembly
363 more often if branch offset sizes are not
366 -O2 multi-pass optimization, minimize branch
367 offsets; also will minimize signed immed-
368 iate bytes, overriding size specification.
370 -O3 like -O2, but more passes taken, if needed
373 0.98.07 released 01/28/01
374 -------------------------
376 * Added Stepane Denis' SSE2 instructions to a *working*
377 version of the code - some earlier versions were based on
378 broken code - sorry 'bout that. version "0.98.07"
384 * Cosmetic modifications to nasm.c, nasm.h,
388 0.98.06f released 01/18/01
389 --------------------------
391 * - Add "metalbrain"s jecxz bug fix in insns.dat
392 - alter nasmdoc.src to match - version "0.98.06f"
395 0.98.06e released 01/09/01
396 --------------------------
398 * Removed the "outforms.h" file - it appears to be
399 someone's old backup of "outform.h". version "0.98.06e"
405 * fbk - finally added the fix for the "multiple %includes bug",
406 known since 7/27/99 - reported originally (?) and sent to
407 us by Austin Lunnen - he reports that John Fine had a fix
408 within the day. Here it is...
410 * Nelson Rush resigns from the group. Big thanks to Nelson for
411 his leadership and enthusiasm in getting these changes
412 incorporated into Nasm!
414 * fbk - [list +], [list -] directives - ineptly implemented, should
415 be re-written or removed, perhaps.
417 * Brian Raiter / fbk - "elfso bug" fix - applied to aoutb format
418 as well - testing might be desirable...
424 * James Seter - -postfix, -prefix command line switches.
425 * Yuri Zaporogets - rdoff utility changes.
431 * GAS-like palign (Panos Minos)
432 * FIXME: Someone, fill this in with details
436 ----------------------------------
438 * Fixed - elf and aoutb bug - shared libraries
439 - multiple "%include" bug in "-f obj"
441 - unrecognized option bug in ndisasm
443 0.98.03 with John Coffman's changes released 27-Jul-2000
444 --------------------------------------------------------
446 * Added signed byte optimizations for the 0x81/0x83 class
447 of instructions: ADC, ADD, AND, CMP, OR, SBB, SUB, XOR:
448 when used as 'ADD reg16,imm' or 'ADD reg32,imm.' Also
449 optimization of signed byte form of 'PUSH imm' and 'IMUL
450 reg,imm'/'IMUL reg,reg,imm.' No size specification is needed.
452 * Added multi-pass JMP and Jcc offset optimization. Offsets
453 on forward references will preferentially use the short form,
454 without the need to code a specific size (short or near) for
455 the branch. Added instructions for 'Jcc label' to use the
456 form 'Jnotcc $+3/JMP label', in cases where a short offset
457 is out of bounds. If compiling for a 386 or higher CPU, then
458 the 386 form of Jcc will be used instead.
460 This feature is controlled by a new command-line switch: "O",
461 (upper case letter O). "-O0" reverts the assembler to no
462 extra optimization passes, "-O1" allows up to 5 extra passes,
463 and "-O2"(default), allows up to 10 extra optimization passes.
465 * Added a new directive: 'cpu XXX', where XXX is any of:
466 8086, 186, 286, 386, 486, 586, pentium, 686, PPro, P2, P3 or
467 Katmai. All are case insensitive. All instructions will
468 be selected only if they apply to the selected cpu or lower.
469 Corrected a couple of bugs in cpu-dependence in 'insns.dat'.
471 * Added to 'standard.mac', the "use16" and "use32" forms of
472 the "bits 16/32" directive. This is nothing new, just conforms
473 to a lot of other assemblers. (minor)
475 * Changed label allocation from 320/32 (10000 labels @ 200K+)
476 to 32/37 (1000 labels); makes running under DOS much easier.
477 Since additional label space is allocated dynamically, this
478 should have no effect on large programs with lots of labels.
479 The 37 is a prime, believed to be better for hashing. (minor)
481 * Integrated patchfile 0.98-0.98.01. I call this version
482 0.98.03, for historical reasons: 0.98.02 was trashed.
484 --John Coffman <johninsd@san.rr.com> 27-Jul-2000
487 Kendall Bennett's SciTech MGL changes
488 -------------------------------------
489 Note that you must define "TASM_COMPAT" at compile-time
490 to get the Tasm Ideal Mode compatibility.
492 All changes can be compiled in and out using the TASM_COMPAT macros,
493 and when compiled without TASM_COMPAT defined we get the exact same
494 binary as the unmodified 0.98 sources.
496 standard.mac, macros.c:
497 . Added macros to ignore TASM directives before first include
500 . Added extern declaration for tasm_compatible_mode
503 . Added global variable tasm_compatible_mode
504 . Added command line switch for TASM compatible mode (-t)
505 . Changed version command line to reflect when compiled with TASM additions
506 . Added response file processing to allow all arguments on a single
507 line (response file is @resp rather than -@resp for NASM format).
510 . Changes islocal() macro to support TASM style @@local labels.
511 . Added islocalchar() macro to support TASM style @@local labels.
514 . Added support for TASM style memory references (ie: mov [DWORD eax],10
515 rather than the NASM style mov DWORD [eax],10).
518 . Added new directives, %arg, %local, %stacksize to directives table
519 . Added support for TASM style directives without a leading % symbol.
521 Integrated a block of changes from Andrew Zabolotny <bit@eltech.ru>:
523 * A new keyword %xdefine and its case-insensitive counterpart %ixdefine.
524 They work almost the same way as %define and %idefine but expand
525 the definition immediately, not on the invocation. Something like a cross
526 between %define and %assign. The "x" suffix stands for "eXpand", so
527 "xdefine" can be deciphered as "expand-and-define". Thus you can do
533 %xdefine %1 dword [esp+ofs]
537 * Changed the place where the expansion of %$name macros are expanded.
538 Now they are converted into ..@ctxnum.name form when detokenizing, so
539 there are no quirks as before when using %$name arguments to macros,
540 in macros etc. For example:
549 Now last line will be expanded into "hello" as expected. This also allows
550 for lots of goodies, a good example are extended "proc" macros included
553 * Added a check for "cstk" in smacro_defined() before calling get_ctx() -
554 this allows for things like:
559 to work without warnings even in no context.
561 * Added a check for "cstk" in %if*ctx and %elif*ctx directives -
562 this allows to use %ifctx without excessive warnings. If there is
563 no active context, %ifctx goes through "false" branch.
565 * Removed "user error: " prefix with %error directive: it just clobbers the
566 output and has absolutely no functionality. Besides, this allows to write
567 macros that does not differ from built-in functions in any way.
569 * Added expansion of string that is output by %error directive. Now you
572 %define hello(x) Hello, x!
575 %error "hello(%$name)"
577 Same happened with %include directive.
579 * Now all directives that expect an identifier will try to expand and
580 concatenate everything without whitespaces in between before usage.
581 For example, with "unfixed" nasm the commands
584 %define __%$abc goodbye
587 would produce "incorrect" output: last line will expand to
591 Not quite what you expected, eh? :-) The answer is that preprocessor
592 treats the %define construct as if it would be
594 %define __ %$abc goodbye
596 (note the white space between __ and %$abc). After my "fix" it
597 will "correctly" expand into
601 as expected. Note that I use quotes around words "correct", "incorrect"
602 etc because this is rather a feature not a bug; however current behaviour
603 is more logical (and allows more advanced macro usage :-).
605 Same change was applied to:
606 %push,%macro,%imacro,%define,%idefine,%xdefine,%ixdefine,
607 %assign,%iassign,%undef
609 * A new directive [WARNING {+|-}warning-id] have been added. It works only
610 if the assembly phase is enabled (i.e. it doesn't work with nasm -e).
612 * A new warning type: macro-selfref. By default this warning is disabled;
613 when enabled NASM warns when a macro self-references itself; for example
614 the following source:
616 [WARNING macro-selfref]
627 will produce a warning, but if we remove the first line we won't see it
628 anymore (which is The Right Thing To Do {tm} IMHO since C preprocessor
629 eats such constructs without warnings at all).
631 * Added a "error" routine to preprocessor which always will set ERR_PASS1
632 bit in severity_code. This removes annoying repeated errors on first
633 and second passes from preprocessor.
635 * Added the %+ operator in single-line macros for concatenating two
636 identifiers. Usage example:
638 %define _myfunc _otherfunc
639 %define cextern(x) _ %+ x
642 After first expansion, third line will become "_myfunc". After this
643 expansion is performed again so it becomes "_otherunc".
645 * Now if preprocessor is in a non-emmitting state, no warning or error
646 will be emmitted. Example:
651 put anything you want between these two brackets,
652 even macro-parameter references %1 or local labels %$zz
653 or macro-local labels %%zz - no warning will be emmitted.
656 * Context-local variables on expansion as a last resort are looked up
657 in outer contexts. For example, the following piece:
667 will expand correctly the fourth line to [esp]; if we'll define another
668 %$a inside the "inner" context, it will take precedence over outer
669 definition. However, this modification has been applied only to
670 expand_smacro and not to smacro_define: as a consequence expansion
671 looks in outer contexts, but %ifdef won't look in outer contexts.
673 This behaviour is needed because we don't want nested contexts to
674 act on already defined local macros. Example:
676 %define %$arg1 [esp+4]
682 In this example the "if" mmacro enters into the "if" context, so %$arg1
683 is not valid anymore inside "if". Of course it could be worked around
684 by using explicitely %$$arg1 but this is ugly IMHO.
686 * Fixed memory leak in %undef. The origline wasn't freed before
689 * Fixed trap in preprocessor when line expanded to empty set of tokens.
690 This happens, for example, in the following case:
699 All changes since NASM 0.98p3 have been produced by H. Peter Anvin <hpa@zytor.com>.
701 * The documentation comment delimiter is \# not #.
702 * Allow EQU definitions to refer to external labels; reported by
704 * Re-enable support for RDOFF v1; reported by Pedro Gimeno.
705 * Updated License file per OK from Simon and Julian.
711 * Update documentation (although the instruction set reference will
712 have to wait; I don't want to hold up the 0.98 release for it.)
713 * Verified that the NASM implementation of the PEXTRW and PMOVMSKB
714 instructions is correct. The encoding differs from what the Intel
715 manuals document, but the Pentium III behaviour matches NASM, not
717 * Fix handling of implicit sizes in PSHUFW and PINSRW, reported by
719 * Resurrect the -s option, which was removed when changing the
720 diagnostic output to stdout.
726 * Fix for "DB" when NASM is running on a bigendian machine.
727 * Invoke insns.pl once for each output script, making Makefile.in
729 * Improve the Unix configure-based makefiles to make package
731 * Included an RPM .spec file for building RPM (RedHat Package Manager)
732 packages on Linux or Unix systems.
733 * Fix Makefile dependency problems.
734 * Change src/rdsrc.pl to include sectioning information in info
735 output; required for install-info to work.
736 * Updated the RDOFF distribution to version 2 from Jules; minor
737 massaging to make it compile in my environment.
738 * Split doc files that can be built by anyone with a Perl interpreter off
739 into a separate archive.
740 * "Dress rehearsal" release!
746 * Fixed opcodes with a third byte-sized immediate argument to not
747 complain if given "byte" on the immediate.
748 * Allow %undef to remove single-line macros with arguments. This
749 matches the behaviour of #undef in the C preprocessor.
750 * Allow -d, -u, -i and -p to be specified as -D, -U, -I and -P for
751 compatibility with most C compilers and preprocessors. This allows
752 Makefile options to be shared between cc and nasm, for example.
754 * Went through the list of Katmai instructions and hopefully fixed the
755 (rather few) mistakes in it.
756 * (Hopefully) fixed a number of disassembler bugs related to ambiguous
757 instructions (disambiguated by -p) and SSE instructions with REP.
758 * Fix for bug reported by Mark Junger: "call dword 0x12345678" should
759 work and may add an OSP (affected CALL, JMP, Jcc).
760 * Fix for environments when "stderr" isn't a compile-time constant.
766 * Took officially over coordination of the 0.98 release; so drop
767 the p3.x notation. Skipped p4 and p5 to avoid confusion with John
768 Fine's J4 and J5 releases.
769 * Update the documentation; however, it still doesn't include
770 documentation for the various new instructions. I somehow wonder if
771 it makes sense to have an instruction set reference in the assembler
772 manual when Intel et al have PDF versions of their manuals online.
773 * Recognize "idt" or "centaur" for the -p option to ndisasm.
774 * Changed error messages back to stderr where they belong, but add an
775 -E option to redirect them elsewhere (the DOS shell cannot redirect
777 * -M option to generate Makefile dependencies (based on code from Alex
779 * %undef preprocessor directive, and -u option, that undefines a
781 * OS/2 Makefile (Mkfiles/Makefile.os2) for Borland under OS/2; from
783 * Various minor bugfixes (reported by):
784 - Dangling %s in preproc.c (Martin Junker)
785 * THERE ARE KNOWN BUGS IN SSE AND THE OTHER KATMAI INSTRUCTIONS. I am
786 on a trip and didn't bring the Katmai instruction reference, so I
787 can't work on them right now.
788 * Updated the License file per agreement with Simon and Jules to
789 include a GPL distribution clause.
795 * (Hopefully) fixed the canned Makefiles to include the outrdf2 and
797 * Renamed changes.asm to changed.asm.
803 * Fixed a bunch of instructions that were added in 0.98p3.5 which had
804 memory operands, and the address-size prefix was missing from the
811 * Merged in changes from John S. Fine's 0.98-J5 release. John's based
812 0.98-J5 on my 0.98p3.3 release; this merges the changes.
813 * Expanded the instructions flag field to a long so we can fit more
814 flags; mark SSE (KNI) and AMD or Katmai-specific instructions as
816 * Fix the "PRIV" flag on a bunch of instructions, and create new
817 "PROT" flag for protected-mode-only instructions (orthogonal to if
818 the instruction is privileged!) and new "SMM" flag for SMM-only
820 * Added AMD-only SYSCALL and SYSRET instructions.
821 * Make SSE actually work, and add new Katmai MMX instructions.
822 * Added a -p (preferred vendor) option to ndisasm so that it can
823 distinguish e.g. Cyrix opcodes also used in SSE. For example:
825 ndisasm -p cyrix aliased.bin
826 00000000 670F514310 paddsiw mm0,[ebx+0x10]
827 00000005 670F514320 paddsiw mm0,[ebx+0x20]
828 ndisasm -p intel aliased.bin
829 00000000 670F514310 sqrtps xmm0,[ebx+0x10]
830 00000005 670F514320 sqrtps xmm0,[ebx+0x20]
831 * Added a bunch of Cyrix-specific instructions.
837 * Made at least an attempt to modify all the additional Makefiles (in
838 the Mkfiles directory). I can't test it, but this was the best I
840 * DOS DJGPP+"Opus Make" Makefile from John S. Fine.
841 * changes.asm changes from John S. Fine.
847 * Patch from Conan Brink to allow nesting of %rep directives.
848 * If we're going to allow INT01 as an alias for INT1/ICEBP (one of
849 Jules 0.98p3 changes), then we should allow INT03 as an alias for INT3
851 * Updated changes.asm to include the latest changes.
852 * Tried to clean up the <CR>s that had snuck in from a DOS/Windows
853 environment into my Unix environment, and try to make sure than
854 DOS/Windows users get them back.
855 * We would silently generate broken tools if insns.dat wasn't sorted
856 properly. Change insns.pl so that the order doesn't matter.
857 * Fix bug in insns.pl (introduced by me) which would cause conditional
858 instructions to have an extra "cc" in disassembly, e.g. "jnz"
859 disassembled as "jccnz".
865 * Merged in John S. Fine's changes from his 0.98-J4 prerelease; see
866 http://www.csoft.net/cz/johnfine/
867 * Changed previous "spotless" Makefile target (appropriate for distribution)
868 to "distclean", and added "cleaner" target which is same as "clean"
869 except deletes files generated by Perl scripts; "spotless" is union.
870 * Removed BASIC programs from distribution. Get a Perl interpreter
872 * Calling this "pre-release 3.2" rather than "p3-hpa2" because of
873 John's contributions.
874 * Actually link in the IEEE output format (zoutieee.c); fix a bunch of
875 compiler warnings in that file. Note I don't know what IEEE output
876 is supposed to look like, so these changes were made "blind".
882 * Merged nasm098p3.zip with nasm-0.97.tar.gz to create a fully
883 buildable version for Unix systems (Makefile.in updates, etc.)
884 * Changed insns.pl to create the instruction tables in nasm.h and
885 names.c, so that a new instruction can be added by adding it *only*
887 * Added the following new instructions: SYSENTER, SYSEXIT, FXSAVE,
888 FXRSTOR, UD1, UD2 (the latter two are two opcodes that Intel
889 guarantee will never be used; one of them is documented as UD2 in
890 Intel documentation, the other one just as "Undefined Opcode" --
891 calling it UD1 seemed to make sense.)
892 * MAX_SYMBOL was defined to be 9, but LOADALL286 and LOADALL386 are 10
893 characters long. Now MAX_SYMBOL is derived from insns.dat.
894 * A note on the BASIC programs included: forget them. insns.bas is
895 already out of date. Get yourself a Perl interpreter for your
896 platform of choice at:
898 http://www.cpan.org/ports/index.html
904 added response file support, improved command line handling, new layout
907 fixed limit checking bug, 'OUT byte nn, reg' bug, and a couple of rdoff
908 related bugs, updated Wishlist; 0.98 Prerelease 3.
914 fixed bug in outcoff.c to do with truncating section names longer
915 than 8 characters, referencing beyond end of string; 0.98 pre-release 2
918 0.98 pre-released May 1999
919 --------------------------
921 Fixed a bug whereby STRUC didn't work at all in RDF.
923 Fixed a problem with group specification in PUBDEFs in OBJ.
925 Improved ease of adding new output formats. Contribution due to
928 Fixed a bug in relocations in the `bin' format: was showing up when
929 a relocatable reference crossed an 8192-byte boundary in any output
932 Fixed a bug in local labels: local-label lookups were inconsistent
933 between passes one and two if an EQU occurred between the definition
934 of a global label and the subsequent use of a local label local to
937 Fixed a seg-fault in the preprocessor (again) which happened when
938 you use a blank line as the first line of a multi-line macro
939 definition and then defined a label on the same line as a call to
942 Fixed a stale-pointer bug in the handling of the NASM environment
943 variable. Thanks to Thomas McWilliams.
945 ELF had a hard limit on the number of sections which caused
946 segfaults when transgressed. Fixed.
948 Added ability for ndisasm to read from stdin by using `-' as the
951 ndisasm wasn't outputting the TO keyword. Fixed.
953 Fixed error cascade on bogus expression in %if - an error in
954 evaluation was causing the entire %if to be discarded, thus creating
955 trouble later when the %else or %endif was encountered.
957 Forward reference tracking was instruction-granular not operand-
958 granular, which was causing 286-specific code to be generated
959 needlessly on code of the form `shr word [forwardref],1'. Thanks to
960 Jim Hague for sending a patch.
962 All messages now appear on stdout, as sending them to stderr serves
963 no useful purpose other than to make redirection difficult.
965 Fixed the problem with EQUs pointing to an external symbol - this
966 now generates an error message.
968 Allowed multiple size prefixes to an operand, of which only the first
969 is taken into account.
971 Incorporated John Fine's changes, including fixes of a large number
972 of preprocessor bugs, some small problems in OBJ, and a reworking of
973 label handling to define labels before their line is assembled, rather
976 Reformatted a lot of the source code to be more readable. Included
977 'coding.txt' as a guideline for how to format code for contributors.
979 Stopped nested %reps causing a panic - they now cause a slightly more
980 friendly error message instead.
982 Fixed floating point constant problems (patch by Pedro Gimeno)
984 Fixed the return value of insn_size() not being checked for -1, indicating
987 Incorporated 3D now instructions.
989 Fixed the 'mov eax, eax + ebx' bug.
991 Fixed the GLOBAL EQU bug in ELF. Released developers release 3.
993 Incorporated John Fine's command line parsing changes
995 Incorporated David Lindauer's OMF debug support
997 Made changes for LCC 4.0 support (__NASM_CDecl__, removed register size
998 specification warning when sizes agree).
1000 Released NASM 0.98 Pre-release 1
1003 0.97 released December 1997
1004 ---------------------------
1006 This was entirely a bug-fix release to 0.96, which seems to have got
1009 Fixed stupid mistake in OBJ which caused `MOV EAX,<constant>' to
1010 fail. Caused by an error in the `MOV EAX,<segment>' support.
1012 ndisasm hung at EOF when compiled with lcc on Linux because lcc on
1013 Linux somehow breaks feof(). ndisasm now does not rely on feof().
1015 A heading in the documentation was missing due to a markup error in
1016 the indexing. Fixed.
1018 Fixed failure to update all pointers on realloc() within extended-
1019 operand code in parser.c. Was causing wrong behaviour and seg faults
1020 on lines such as `dd 0.0,0.0,0.0,0.0,...'
1022 Fixed a subtle preprocessor bug whereby invoking one multi-line
1023 macro on the first line of the expansion of another, when the second
1024 had been invoked with a label defined before it, didn't expand the
1027 Added internal.doc back in to the distribution archives - it was
1028 missing in 0.96 *blush*
1030 Fixed bug causing 0.96 to be unable to assemble its own test files,
1031 specifically objtest.asm. *blush again*
1033 Fixed seg-faults and bogus error messages caused by mismatching
1034 %rep and %endrep within multi-line macro definitions.
1036 Fixed a problem with buffer overrun in OBJ, which was causing
1037 corruption at ends of long PUBDEF records.
1039 Separated DOS archives into main-program and documentation to reduce
1043 0.96 released November 1997
1044 ---------------------------
1046 Fixed a bug whereby, if `nasm sourcefile' would cause a filename
1047 collision warning and put output into `nasm.out', then `nasm
1048 sourcefile -o outputfile' still gave the warning even though the
1051 Fixed name pollution under Digital UNIX: one of its header files
1052 defined R_SP, which broke the enum in nasm.h.
1054 Fixed minor instruction table problems: FUCOM and FUCOMP didn't have
1055 two-operand forms; NDISASM didn't recognise the longer register
1056 forms of PUSH and POP (eg FF F3 for PUSH BX); TEST mem,imm32 was
1057 flagged as undocumented; the 32-bit forms of CMOV had 16-bit operand
1058 size prefixes; `AAD imm' and `AAM imm' are no longer flagged as
1059 undocumented because the Intel Architecture reference documents
1062 Fixed a problem with the local-label mechanism, whereby strange
1063 types of symbol (EQUs, auto-defined OBJ segment base symbols)
1064 interfered with the `previous global label' value and screwed up
1067 Fixed a bug whereby the stub preprocessor didn't communicate with
1068 the listing file generator, so that the -a and -l options in
1069 conjunction would produce a useless listing file.
1071 Merged `os2' object file format back into `obj', after discovering
1072 that `obj' _also_ shouldn't have a link pass separator in a module
1073 containing a non-trivial MODEND. Flat segments are now declared
1074 using the FLAT attribute. `os2' is no longer a valid object format
1077 Removed the fixed-size temporary storage in the evaluator. Very very
1078 long expressions (like `mov ax,1+1+1+1+...' for two hundred 1s or
1079 so) should now no longer crash NASM.
1081 Fixed a bug involving segfaults on disassembly of MMX instructions,
1082 by changing the meaning of one of the operand-type flags in nasm.h.
1083 This may cause other apparently unrelated MMX problems; it needs to
1084 be tested thoroughly.
1086 Fixed some buffer overrun problems with large OBJ output files.
1087 Thanks to DJ Delorie for the bug report and fix.
1089 Made preprocess-only mode actually listen to the %line markers as it
1090 prints them, so that it can report errors more sanely.
1092 Re-designed the evaluator to keep more sensible track of expressions
1093 involving forward references: can now cope with previously-nightmare
1099 Added the ALIGN and ALIGNB standard macros.
1101 Added PIC support in ELF: use of WRT to obtain the four extra
1102 relocation types needed.
1104 Added the ability for output file formats to define their own
1105 extensions to the GLOBAL, COMMON and EXTERN directives.
1107 Implemented common-variable alignment, and global-symbol type and
1108 size declarations, in ELF.
1110 Implemented NEAR and FAR keywords for common variables, plus
1111 far-common element size specification, in OBJ.
1113 Added a feature whereby EXTERNs and COMMONs in OBJ can be given a
1114 default WRT specification (either a segment or a group).
1116 Transformed the Unix NASM archive into an auto-configuring package.
1118 Added a sanity-check for people applying SEG to things which are
1119 already segment bases: this previously went unnoticed by the SEG
1120 processing and caused OBJ-driver panics later.
1122 Added the ability, in OBJ format, to deal with `MOV EAX,<segment>'
1123 type references: OBJ doesn't directly support dword-size segment
1124 base fixups, but as long as the low two bytes of the constant term
1125 are zero, a word-size fixup can be generated instead and it will
1128 Added the ability to specify sections' alignment requirements in
1129 Win32 object files and pure binary files.
1131 Added preprocess-time expression evaluation: the %assign (and
1132 %iassign) directive and the bare %if (and %elif) conditional. Added
1133 relational operators to the evaluator, for use only in %if
1134 constructs: the standard relationals = < > <= >= <> (and C-like
1135 synonyms == and !=) plus low-precedence logical operators &&, ^^ and
1138 Added a preprocessor repeat construct: %rep / %exitrep / %endrep.
1140 Added the __FILE__ and __LINE__ standard macros.
1142 Added a sanity check for number constants being greater than
1143 0xFFFFFFFF. The warning can be disabled.
1145 Added the %0 token whereby a variadic multi-line macro can tell how
1146 many parameters it's been given in a specific invocation.
1148 Added %rotate, allowing multi-line macro parameters to be cycled.
1150 Added the `*' option for the maximum parameter count on multi-line
1151 macros, allowing them to take arbitrarily many parameters.
1153 Added the ability for the user-level forms of EXTERN, GLOBAL and
1154 COMMON to take more than one argument.
1156 Added the IMPORT and EXPORT directives in OBJ format, to deal with
1159 Added some more preprocessor %if constructs: %ifidn / %ifidni (exact
1160 textual identity), and %ifid / %ifnum / %ifstr (token type testing).
1162 Added the ability to distinguish SHL AX,1 (the 8086 version) from
1163 SHL AX,BYTE 1 (the 286-and-upwards version whose constant happens to
1166 Added NetBSD/FreeBSD/OpenBSD's variant of a.out format, complete
1167 with PIC shared library features.
1169 Changed NASM's idiosyncratic handling of FCLEX, FDISI, FENI, FINIT,
1170 FSAVE, FSTCW, FSTENV, and FSTSW to bring it into line with the
1171 otherwise accepted standard. The previous behaviour, though it was a
1172 deliberate feature, was a deliberate feature based on a
1173 misunderstanding. Apologies for the inconvenience.
1175 Improved the flexibility of ABSOLUTE: you can now give it an
1176 expression rather than being restricted to a constant, and it can
1177 take relocatable arguments as well.
1179 Added the ability for a variable to be declared as EXTERN multiple
1180 times, and the subsequent definitions are just ignored.
1182 We now allow instruction prefixes (CS, DS, LOCK, REPZ etc) to be
1183 alone on a line (without a following instruction).
1185 Improved sanity checks on whether the arguments to EXTERN, GLOBAL
1186 and COMMON are valid identifiers.
1188 Added misc/exebin.mac to allow direct generation of .EXE files by
1189 hacking up an EXE header using DB and DW; also added test/binexe.asm
1190 to demonstrate the use of this. Thanks to Yann Guidon for
1191 contributing the EXE header code.
1193 ndisasm forgot to check whether the input file had been successfully
1194 opened. Now it does. Doh!
1196 Added the Cyrix extensions to the MMX instruction set.
1198 Added a hinting mechanism to allow [EAX+EBX] and [EBX+EAX] to be
1199 assembled differently. This is important since [ESI+EBP] and
1200 [EBP+ESI] have different default base segment registers.
1202 Added support for the PharLap OMF extension for 4096-byte segment
1206 0.95 released July 1997
1207 -----------------------
1209 Fixed yet another ELF bug. This one manifested if the user relied on
1210 the default segment, and attempted to define global symbols without
1211 first explicitly declaring the target segment.
1213 Added makefiles (for NASM and the RDF tools) to build Win32 console
1214 apps under Symantec C++. Donated by Mark Junker.
1216 Added `macros.bas' and `insns.bas', QBasic versions of the Perl
1217 scripts that convert `standard.mac' to `macros.c' and convert
1218 `insns.dat' to `insnsa.c' and `insnsd.c'. Also thanks to Mark
1221 Changed the diassembled forms of the conditional instructions so
1222 that JB is now emitted as JC, and other similar changes. Suggested
1223 list by Ulrich Doewich.
1225 Added `@' to the list of valid characters to begin an identifier
1228 Documentary changes, notably the addition of the `Common Problems'
1229 section in nasm.doc.
1231 Fixed a bug relating to 32-bit PC-relative fixups in OBJ.
1233 Fixed a bug in perm_copy() in labels.c which was causing exceptions
1234 in cleanup_labels() on some systems.
1236 Positivity sanity check in TIMES argument changed from a warning to
1237 an error following a further complaint.
1239 Changed the acceptable limits on byte and word operands to allow
1240 things like `~10111001b' to work.
1242 Fixed a major problem in the preprocessor which caused seg-faults if
1243 macro definitions contained blank lines or comment-only lines.
1245 Fixed inadequate error checking on the commas separating the
1246 arguments to `db', `dw' etc.
1248 Fixed a crippling bug in the handling of macros with operand counts
1249 defined with a `+' modifier.
1251 Fixed a bug whereby object file formats which stored the input file
1252 name in the output file (such as OBJ and COFF) weren't doing so
1253 correctly when the output file name was specified on the command
1256 Removed [INC] and [INCLUDE] support for good, since they were
1259 Fixed a bug in OBJ which caused all fixups to be output in 16-bit
1260 (old-format) FIXUPP records, rather than putting the 32-bit ones in
1261 FIXUPP32 (new-format) records.
1263 Added, tentatively, OS/2 object file support (as a minor variant on
1266 Updates to Fox Cutter's Borland C makefile, Makefile.bc2.
1268 Removed a spurious second fclose() on the output file.
1270 Added the `-s' command line option to redirect all messages which
1271 would go to stderr (errors, help text) to stdout instead.
1273 Added the `-w' command line option to selectively suppress some
1274 classes of assembly warning messages.
1276 Added the `-p' pre-include and `-d' pre-define command-line options.
1278 Added an include file search path: the `-i' command line option.
1280 Fixed a silly little preprocessor bug whereby starting a line with a
1281 `%!' environment-variable reference caused an `unknown directive'
1284 Added the long-awaited listing file support: the `-l' command line
1287 Fixed a problem with OBJ format whereby, in the absence of any
1288 explicit segment definition, non-global symbols declared in the
1289 implicit default segment generated spurious EXTDEF records in the
1292 Added the NASM environment variable.
1294 From this version forward, Win32 console-mode binaries will be
1295 included in the DOS distribution in addition to the 16-bit binaries.
1296 Added Makefile.vc for this purpose.
1298 Added `return 0;' to test/objlink.c to prevent compiler warnings.
1300 Added the __NASM_MAJOR__ and __NASM_MINOR__ standard defines.
1302 Added an alternative memory-reference syntax in which prefixing an
1303 operand with `&' is equivalent to enclosing it in square brackets,
1304 at the request of Fox Cutter.
1306 Errors in pass two now cause the program to return a non-zero error
1307 code, which they didn't before.
1309 Fixed the single-line macro cycle detection, which didn't work at
1310 all on macros with no parameters (caused an infinite loop). Also
1311 changed the behaviour of single-line macro cycle detection to work
1312 like cpp, so that macros like `extrn' as given in the documentation
1315 Fixed the implementation of WRT, which was too restrictive in that
1316 you couldn't do `mov ax,[di+abc wrt dgroup]' because (di+abc) wasn't
1317 a relocatable reference.
1320 0.94 released April 1997
1321 ------------------------
1323 Major item: added the macro processor.
1325 Added undocumented instructions SMI, IBTS, XBTS and LOADALL286. Also
1326 reorganised CMPXCHG instruction into early-486 and Pentium forms.
1327 Thanks to Thobias Jones for the information.
1329 Fixed two more stupid bugs in ELF, which were causing `ld' to
1330 continue to seg-fault in a lot of non-trivial cases.
1332 Fixed a seg-fault in the label manager.
1334 Stopped FBLD and FBSTP from _requiring_ the TWORD keyword, which is
1335 the only option for BCD loads/stores in any case.
1337 Ensured FLDCW, FSTCW and FSTSW can cope with the WORD keyword, if
1338 anyone bothers to provide it. Previously they complained unless no
1339 keyword at all was present.
1341 Some forms of FDIV/FDIVR and FSUB/FSUBR were still inverted: a
1342 vestige of a bug that I thought had been fixed in 0.92. This was
1343 fixed, hopefully for good this time...
1345 Another minor phase error (insofar as a phase error can _ever_ be
1346 minor) fixed, this one occurring in code of the form
1347 rol ax,forward_reference
1348 forward_reference equ 1
1350 The number supplied to TIMES is now sanity-checked for positivity,
1351 and also may be greater than 64K (which previously didn't work on
1354 Added Watcom C makefiles, and misc/pmw.bat, donated by Dominik Behr.
1356 Added the INCBIN pseudo-opcode.
1358 Due to the advent of the preprocessor, the [INCLUDE] and [INC]
1359 directives have become obsolete. They are still supported in this
1360 version, with a warning, but won't be in the next.
1362 Fixed a bug in OBJ format, which caused incorrect object records to
1363 be output when absolute labels were made global.
1365 Updates to RDOFF subdirectory, and changes to outrdf.c.
1368 0.93 released January 1997
1369 --------------------------
1371 This release went out in a great hurry after semi-crippling bugs
1374 Really _did_ fix the stack overflows this time. *blush*
1376 Had problems with EA instruction sizes changing between passes, when
1377 an offset contained a forward reference and so 4 bytes were
1378 allocated for the offset in pass one; by pass two the symbol had
1379 been defined and happened to be a small absolute value, so only 1
1380 byte got allocated, causing instruction size mismatch between passes
1381 and hence incorrect address calculations. Fixed.
1383 Stupid bug in the revised ELF section generation fixed (associated
1384 string-table section for .symtab was hard-coded as 7, even when this
1385 didn't fit with the real section table). Was causing `ld' to
1386 seg-fault under Linux.
1388 Included a new Borland C makefile, Makefile.bc2, donated by Fox
1389 Cutter <lmb@comtch.iea.com>.
1392 0.92 released January 1997
1393 --------------------------
1395 The FDIVP/FDIVRP and FSUBP/FSUBRP pairs had been inverted: this was
1396 fixed. This also affected the LCC driver.
1398 Fixed a bug regarding 32-bit effective addresses of the form
1399 [other_register+ESP].
1401 Documentary changes, notably documentation of the fact that Borland
1402 Win32 compilers use `obj' rather than `win32' object format.
1404 Fixed the COMENT record in OBJ files, which was formatted
1407 Fixed a bug causing segfaults in large RDF files.
1409 OBJ format now strips initial periods from segment and group
1410 definitions, in order to avoid complications with the local label
1413 Fixed a bug in disassembling far calls and jumps in NDISASM.
1415 Added support for user-defined sections in COFF and ELF files.
1417 Compiled the DOS binaries with a sensible amount of stack, to
1418 prevent stack overflows on any arithmetic expression containing
1421 Fixed a bug in handling of files that do not terminate in a newline.
1424 0.91 released November 1996
1425 ---------------------------
1428 Support for RDF added.
1429 Support for DBG debugging format added.
1430 Support for 32-bit extensions to Microsoft OBJ format added.
1431 Revised for Borland C: some variable names changed, makefile added.
1432 LCC support revised to actually work.
1433 JMP/CALL NEAR/FAR notation added.
1434 `a16', `o16', `a32' and `o32' prefixes added.
1435 Range checking on short jumps implemented.
1436 MMX instruction support added.
1437 Negative floating point constant support added.
1438 Memory handling improved to bypass 64K barrier under DOS.
1439 $ prefix to force treatment of reserved words as identifiers added.
1440 Default-size mechanism for object formats added.
1441 Compile-time configurability added.
1442 `#', `@', `~' and `?' are now valid characters in labels.
1443 `-e' and `-k' options in NDISASM added.
1446 0.90 released October 1996
1447 --------------------------
1449 First release version. First support for object file output. Other
1450 changes from previous version (0.3x) too numerous to document.
projects / platform / upstream / nasm.git / blob