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 * Add support for the XSAVE instruction group.
18 * Makefile for Netware/gcc.
19 * Fix issue with some warnings getting emitted way too many times.
20 * Autogenerated instruction list added to the documentation.
24 * Fix the handling of MMX registers with explicit "qword" tags on
25 memory (broken in 2.00 due to 64-bit changes.)
26 * Fix the PREFETCH instructions.
27 * Fix the documentation.
28 * Fix debugging info when using "-f elf" (backwards alias for "-f
30 * Man pages for rdoff tools (from the Debian project.)
31 * ELF: handle large numbers of sections.
32 * Fix corrupt output when the optimizer runs out of passes.
36 * Added c99 data-type compliance.
37 * Added general x86-64 support.
38 * Added win64 (x86-64 COFF) output format.
39 * Added __BITS__ standard macro.
40 * Renamed the elf output format to elf32 for clarity.
41 * Added elf64 and macho (MacOS X) output formats.
42 * Added Numeric constants in DQ directive.
43 * Added oword, do and reso pseudo operands.
44 * Allow underscores in numbers.
45 * Added 8-, 16- and 128-bit floating-point formats.
46 * Added binary, octal and hexadecimal floating-point.
47 * Correct the generation of floating-point constants.
48 * Added Floating-point option control.
49 * Added Infinity and NaN floating point support.
50 * Added ELF Symbol Visibility support.
51 * Added Setting OSABI value in ELF header directive.
52 * Added Generate Makefile Dependencies option.
53 * Added Unlimited Optimization Passes option.
54 * Added %IFN and %ELIFN support.
55 * Added Logical Negation Operator.
56 * Enhanced Stack Relative Preprocessor Directives.
57 * Enhanced ELF Debug Formats.
58 * Enhanced Send Errors to a File option.
59 * Added SSSE3, SSE4.1, SSE4.2, SSE5 support.
60 * Added a large number of additional instructions.
61 * Significant performance improvements.
66 * fix outas86's .bss handling
67 * "make spotless" no longer deletes config.h.in.
68 * %(el)if(n)idn insensitivity to string quotes difference (#809300).
69 * (nasm.c) __OUTPUT_FORMAT__ changed to string value instead of symbol.
73 * Add Makefile for 16-bit DOS binaries under OpenWatcom, and modify
74 mkdep.pl to be able to generate completely pathless dependencies, as
75 required by OpenWatcom wmake (it supports path searches, but not
77 * Fix the STR instruction.
78 * Fix the ELF output format, which was broken under certain
79 circumstances due to the addition of stabs support.
80 * Quick-fix Borland format debug-info for -f obj
81 * Fix for %rep with no arguments (#560568)
82 * Fix concatenation of preprocessor function call (#794686)
83 * Fix long label causes coredump (#677841)
84 * Use autoheader as well as autoconf to keep configure from generating
85 ridiculously long command lines.
86 * Make sure that all of the formats which support debugging output
87 actually will suppress debugging output when -g not specified.
91 * Paths given in "-I" switch searched for "incbin"ed as
92 well as "%include"ed files.
93 * Added stabs debugging for the ELF output format, patch from
95 * Fix output/outbin.c to allow origin > 80000000h.
96 * Make -U switch work.
97 * Fix the use of relative offsets with explicit prefixes, e.g. "a32 loop foo".
98 * Remove "backslash()".
99 * Fix the SMSW and SLDT instructions.
100 * -O2 and -O3 are no longer aliases for -O10 and -O15. If you mean the
101 latter, please say so! :)
105 * Update rdoff - librarian/archiver - common rec - docs!
106 * Fix signed/unsigned problems.
107 * Fix JMP FAR label and CALL FAR label.
108 * Add new multisection support - map files - fix align bug
109 * Fix sysexit, movhps/movlps reg,reg bugs in insns.dat
110 * "Q" or "O" suffixes indicate octal
111 * Support Prescott new instructions (PNI).
112 * Cyrix XSTORE instruction.
116 * Fix build failure on 16-bit DOS (Makefile.bc3 workaround for compiler bug.)
117 * Fix dependencies and compiler warnings.
118 * Add "const" in a number of places.
119 * Add -X option to specify error reporting format (use -Xvc to
120 integrate with Microsoft Visual Studio.)
121 * Minor changes for code legibility.
122 * Drop use of tmpnam() in rdoff (security fix.)
126 * Correct additional address-size vs. operand-size confusions.
127 * Generate dependencies for all Makefiles automatically.
128 * Add support for unimplemented (but theoretically available)
129 registers such as tr0 and cr5. Segment registers 6 and 7 are called
130 segr6 and segr7 for the operations which they can be represented.
131 * Correct some disassembler bugs related to redundant address-size prefixes.
132 Some work still remains in this area.
133 * Correctly generate an error for things like "SEG eax".
134 * Add the JMPE instruction, enabled by "CPU IA64".
135 * Correct compilation on newer gcc/glibc platforms.
136 * Issue an error on things like "jmp far eax".
142 * New __NASM_PATCHLEVEL__ and __NASM_VERSION_ID__ standard macros to
143 round out the version-query macros. version.pl now understands
144 X.YYplWW or X.YY.ZZplWW as a version number, equivalent to
145 X.YY.ZZ.WW (or X.YY.0.WW, as appropriate).
146 * New keyword "strict" to disable the optimization of specific
148 * Fix the handing of size overrides with JMP instructions
149 (instructions such as "jmp dword foo".)
150 * Fix the handling of "ABSOLUTE label", where "label" points into a
152 * Fix OBJ output format with lots of externs.
153 * More documentation updates.
154 * Add -Ov option to get verbose information about optimizations.
155 * Undo a braindead change which broke %elif directives.
162 * Fix NASM crashing when %macro directives were left unterminated.
163 * Lots of documentation updates.
164 * Complete rewrite of the PostScript/PDF documentation generator.
165 * The MS Visual C++ Makefile was updated and corrected.
166 * Recognize .rodata as a standard section name in ELF.
167 * Fix some obsolete Perl4-isms in Perl scripts.
168 * Fix configure.in to work with autoconf 2.5x.
169 * Fix a couple of "make cleaner" misses.
170 * Make the normal "./configure && make" work with Cygwin.
176 * Correctly build in a separate object directory again.
177 * Derive all references to the version number from the version file.
178 * New standard macros __NASM_SUBMINOR__ and __NASM_VER__ macros.
179 * Lots of Makefile updates and bug fixes.
180 * New %ifmacro directive to test for multiline macros.
181 * Documentation updates.
182 * Fixes for 16-bit OBJ format output.
183 * Changed the NASM environment variable to NASMENV.
189 * Changed doc files a lot: completely removed old READMExx and
190 Wishlist files, incorporating all information in CHANGES and TODO.
191 * I waited a long time to rename zoutieee.c to (original) outieee.c
192 * moved all output modules to output/ subdirectory.
193 * Added 'make strip' target to strip debug info from nasm & ndisasm.
194 * Added INSTALL file with installation instructions.
195 * Added -v option description to nasm man.
196 * Added dist makefile target to produce source distributions.
197 * 16-bit support for ELF output format (GNU extension, but useful.)
203 * Fastcooked this for Debian's Woody release:
204 Frank applied the INCBIN bug patch to 0.98.25alt and called
205 it 0.98.28 to not confuse poor little apt-get.
211 * Reorganised files even better from 0.98.25alt
217 * Prettified the source tree. Moved files to more reasonable places.
218 * Added findleak.pl script to misc/ directory.
219 * Attempted to fix doc.
224 * Line continuation character '\'
225 * Docs inadvertantly reverted - "dos packaging".
231 * FIXME: Someone, document this please.
237 * Documentation - Ndisasm doc added to Nasm.doc.
243 * Attempted to remove rdoff version1
244 * Lino Mastrodomenico's patches to preproc.c (%$$ bug?).
250 * Update rdoff2 - attempt to remove v1.
256 * Optimization fixes.
262 * Optimization fixes.
268 * H. J. Lu's patch back out.
274 * Added ".rdata" to "-f win32".
280 * H. J. Lu's "bogus elf" patch. (Red Hat problem?)
286 * Fix whitespace before "[section ..." bug.
292 * Fix fixes to memory leaks.
298 * (there was no '.13)
303 * Update optimization (new function of "-O1")
304 * Changes to test/bintest.asm (?).
309 * Optimization changes.
311 * (there was no '.10)
316 * Add multiple sections support to "-f bin".
317 * Changed GLOBAL_TEMP_BASE in outelf.c from 6 to 15.
318 * Add "-v" as an alias to the "-r" switch.
319 * Remove "#ifdef" from Tasm compatibility options.
320 * Remove redundant size-overrides on "mov ds, ex", etc.
321 * Fixes to SSE2, other insns.dat (?).
322 * Enable uppercase "I" and "P" switches.
323 * Case insinsitive "seg" and "wrt".
324 * Update install.sh (?).
325 * Allocate tokens in blocks.
326 * Improve "invalid effective address" messages.
331 * Add "%strlen" and "%substr" macro operators
332 * Fixed broken c16.mac.
333 * Unterminated string error reported.
334 * Fixed bugs as per 0.98bf
337 0.98.09b with John Coffman patches released 28-Oct-2001
338 -------------------------------------------------------
340 Changes from 0.98.07 release to 98.09b as of 28-Oct-2001
342 * More closely compatible with 0.98 when -O0 is implied
343 or specified. Not strictly identical, since backward
344 branches in range of short offsets are recognized, and signed
345 byte values with no explicit size specification will be
346 assembled as a single byte.
348 * More forgiving with the PUSH instruction. 0.98 requires
349 a size to be specified always. 0.98.09b will imply the size
350 from the current BITS setting (16 or 32).
352 * Changed definition of the optimization flag:
354 -O0 strict two-pass assembly, JMP and Jcc are
355 handled more like 0.98, except that back-
356 ward JMPs are short, if possible.
358 -O1 strict two-pass assembly, but forward
359 branches are assembled with code guaranteed
360 to reach; may produce larger code than
361 -O0, but will produce successful assembly
362 more often if branch offset sizes are not
365 -O2 multi-pass optimization, minimize branch
366 offsets; also will minimize signed immed-
367 iate bytes, overriding size specification.
369 -O3 like -O2, but more passes taken, if needed
372 0.98.07 released 01/28/01
373 -------------------------
375 * Added Stepane Denis' SSE2 instructions to a *working*
376 version of the code - some earlier versions were based on
377 broken code - sorry 'bout that. version "0.98.07"
383 * Cosmetic modifications to nasm.c, nasm.h,
387 0.98.06f released 01/18/01
388 --------------------------
390 * - Add "metalbrain"s jecxz bug fix in insns.dat
391 - alter nasmdoc.src to match - version "0.98.06f"
394 0.98.06e released 01/09/01
395 --------------------------
397 * Removed the "outforms.h" file - it appears to be
398 someone's old backup of "outform.h". version "0.98.06e"
404 * fbk - finally added the fix for the "multiple %includes bug",
405 known since 7/27/99 - reported originally (?) and sent to
406 us by Austin Lunnen - he reports that John Fine had a fix
407 within the day. Here it is...
409 * Nelson Rush resigns from the group. Big thanks to Nelson for
410 his leadership and enthusiasm in getting these changes
411 incorporated into Nasm!
413 * fbk - [list +], [list -] directives - ineptly implemented, should
414 be re-written or removed, perhaps.
416 * Brian Raiter / fbk - "elfso bug" fix - applied to aoutb format
417 as well - testing might be desirable...
423 * James Seter - -postfix, -prefix command line switches.
424 * Yuri Zaporogets - rdoff utility changes.
430 * GAS-like palign (Panos Minos)
431 * FIXME: Someone, fill this in with details
435 ----------------------------------
437 * Fixed - elf and aoutb bug - shared libraries
438 - multiple "%include" bug in "-f obj"
440 - unrecognized option bug in ndisasm
442 0.98.03 with John Coffman's changes released 27-Jul-2000
443 --------------------------------------------------------
445 * Added signed byte optimizations for the 0x81/0x83 class
446 of instructions: ADC, ADD, AND, CMP, OR, SBB, SUB, XOR:
447 when used as 'ADD reg16,imm' or 'ADD reg32,imm.' Also
448 optimization of signed byte form of 'PUSH imm' and 'IMUL
449 reg,imm'/'IMUL reg,reg,imm.' No size specification is needed.
451 * Added multi-pass JMP and Jcc offset optimization. Offsets
452 on forward references will preferentially use the short form,
453 without the need to code a specific size (short or near) for
454 the branch. Added instructions for 'Jcc label' to use the
455 form 'Jnotcc $+3/JMP label', in cases where a short offset
456 is out of bounds. If compiling for a 386 or higher CPU, then
457 the 386 form of Jcc will be used instead.
459 This feature is controlled by a new command-line switch: "O",
460 (upper case letter O). "-O0" reverts the assembler to no
461 extra optimization passes, "-O1" allows up to 5 extra passes,
462 and "-O2"(default), allows up to 10 extra optimization passes.
464 * Added a new directive: 'cpu XXX', where XXX is any of:
465 8086, 186, 286, 386, 486, 586, pentium, 686, PPro, P2, P3 or
466 Katmai. All are case insensitive. All instructions will
467 be selected only if they apply to the selected cpu or lower.
468 Corrected a couple of bugs in cpu-dependence in 'insns.dat'.
470 * Added to 'standard.mac', the "use16" and "use32" forms of
471 the "bits 16/32" directive. This is nothing new, just conforms
472 to a lot of other assemblers. (minor)
474 * Changed label allocation from 320/32 (10000 labels @ 200K+)
475 to 32/37 (1000 labels); makes running under DOS much easier.
476 Since additional label space is allocated dynamically, this
477 should have no effect on large programs with lots of labels.
478 The 37 is a prime, believed to be better for hashing. (minor)
480 * Integrated patchfile 0.98-0.98.01. I call this version
481 0.98.03, for historical reasons: 0.98.02 was trashed.
483 --John Coffman <johninsd@san.rr.com> 27-Jul-2000
486 Kendall Bennett's SciTech MGL changes
487 -------------------------------------
488 Note that you must define "TASM_COMPAT" at compile-time
489 to get the Tasm Ideal Mode compatibility.
491 All changes can be compiled in and out using the TASM_COMPAT macros,
492 and when compiled without TASM_COMPAT defined we get the exact same
493 binary as the unmodified 0.98 sources.
495 standard.mac, macros.c:
496 . Added macros to ignore TASM directives before first include
499 . Added extern declaration for tasm_compatible_mode
502 . Added global variable tasm_compatible_mode
503 . Added command line switch for TASM compatible mode (-t)
504 . Changed version command line to reflect when compiled with TASM additions
505 . Added response file processing to allow all arguments on a single
506 line (response file is @resp rather than -@resp for NASM format).
509 . Changes islocal() macro to support TASM style @@local labels.
510 . Added islocalchar() macro to support TASM style @@local labels.
513 . Added support for TASM style memory references (ie: mov [DWORD eax],10
514 rather than the NASM style mov DWORD [eax],10).
517 . Added new directives, %arg, %local, %stacksize to directives table
518 . Added support for TASM style directives without a leading % symbol.
520 Integrated a block of changes from Andrew Zabolotny <bit@eltech.ru>:
522 * A new keyword %xdefine and its case-insensitive counterpart %ixdefine.
523 They work almost the same way as %define and %idefine but expand
524 the definition immediately, not on the invocation. Something like a cross
525 between %define and %assign. The "x" suffix stands for "eXpand", so
526 "xdefine" can be deciphered as "expand-and-define". Thus you can do
532 %xdefine %1 dword [esp+ofs]
536 * Changed the place where the expansion of %$name macros are expanded.
537 Now they are converted into ..@ctxnum.name form when detokenizing, so
538 there are no quirks as before when using %$name arguments to macros,
539 in macros etc. For example:
548 Now last line will be expanded into "hello" as expected. This also allows
549 for lots of goodies, a good example are extended "proc" macros included
552 * Added a check for "cstk" in smacro_defined() before calling get_ctx() -
553 this allows for things like:
558 to work without warnings even in no context.
560 * Added a check for "cstk" in %if*ctx and %elif*ctx directives -
561 this allows to use %ifctx without excessive warnings. If there is
562 no active context, %ifctx goes through "false" branch.
564 * Removed "user error: " prefix with %error directive: it just clobbers the
565 output and has absolutely no functionality. Besides, this allows to write
566 macros that does not differ from built-in functions in any way.
568 * Added expansion of string that is output by %error directive. Now you
571 %define hello(x) Hello, x!
574 %error "hello(%$name)"
576 Same happened with %include directive.
578 * Now all directives that expect an identifier will try to expand and
579 concatenate everything without whitespaces in between before usage.
580 For example, with "unfixed" nasm the commands
583 %define __%$abc goodbye
586 would produce "incorrect" output: last line will expand to
590 Not quite what you expected, eh? :-) The answer is that preprocessor
591 treats the %define construct as if it would be
593 %define __ %$abc goodbye
595 (note the white space between __ and %$abc). After my "fix" it
596 will "correctly" expand into
600 as expected. Note that I use quotes around words "correct", "incorrect"
601 etc because this is rather a feature not a bug; however current behaviour
602 is more logical (and allows more advanced macro usage :-).
604 Same change was applied to:
605 %push,%macro,%imacro,%define,%idefine,%xdefine,%ixdefine,
606 %assign,%iassign,%undef
608 * A new directive [WARNING {+|-}warning-id] have been added. It works only
609 if the assembly phase is enabled (i.e. it doesn't work with nasm -e).
611 * A new warning type: macro-selfref. By default this warning is disabled;
612 when enabled NASM warns when a macro self-references itself; for example
613 the following source:
615 [WARNING macro-selfref]
626 will produce a warning, but if we remove the first line we won't see it
627 anymore (which is The Right Thing To Do {tm} IMHO since C preprocessor
628 eats such constructs without warnings at all).
630 * Added a "error" routine to preprocessor which always will set ERR_PASS1
631 bit in severity_code. This removes annoying repeated errors on first
632 and second passes from preprocessor.
634 * Added the %+ operator in single-line macros for concatenating two
635 identifiers. Usage example:
637 %define _myfunc _otherfunc
638 %define cextern(x) _ %+ x
641 After first expansion, third line will become "_myfunc". After this
642 expansion is performed again so it becomes "_otherunc".
644 * Now if preprocessor is in a non-emmitting state, no warning or error
645 will be emmitted. Example:
650 put anything you want between these two brackets,
651 even macro-parameter references %1 or local labels %$zz
652 or macro-local labels %%zz - no warning will be emmitted.
655 * Context-local variables on expansion as a last resort are looked up
656 in outer contexts. For example, the following piece:
666 will expand correctly the fourth line to [esp]; if we'll define another
667 %$a inside the "inner" context, it will take precedence over outer
668 definition. However, this modification has been applied only to
669 expand_smacro and not to smacro_define: as a consequence expansion
670 looks in outer contexts, but %ifdef won't look in outer contexts.
672 This behaviour is needed because we don't want nested contexts to
673 act on already defined local macros. Example:
675 %define %$arg1 [esp+4]
681 In this example the "if" mmacro enters into the "if" context, so %$arg1
682 is not valid anymore inside "if". Of course it could be worked around
683 by using explicitely %$$arg1 but this is ugly IMHO.
685 * Fixed memory leak in %undef. The origline wasn't freed before
688 * Fixed trap in preprocessor when line expanded to empty set of tokens.
689 This happens, for example, in the following case:
698 All changes since NASM 0.98p3 have been produced by H. Peter Anvin <hpa@zytor.com>.
700 * The documentation comment delimiter is \# not #.
701 * Allow EQU definitions to refer to external labels; reported by
703 * Re-enable support for RDOFF v1; reported by Pedro Gimeno.
704 * Updated License file per OK from Simon and Julian.
710 * Update documentation (although the instruction set reference will
711 have to wait; I don't want to hold up the 0.98 release for it.)
712 * Verified that the NASM implementation of the PEXTRW and PMOVMSKB
713 instructions is correct. The encoding differs from what the Intel
714 manuals document, but the Pentium III behaviour matches NASM, not
716 * Fix handling of implicit sizes in PSHUFW and PINSRW, reported by
718 * Resurrect the -s option, which was removed when changing the
719 diagnostic output to stdout.
725 * Fix for "DB" when NASM is running on a bigendian machine.
726 * Invoke insns.pl once for each output script, making Makefile.in
728 * Improve the Unix configure-based makefiles to make package
730 * Included an RPM .spec file for building RPM (RedHat Package Manager)
731 packages on Linux or Unix systems.
732 * Fix Makefile dependency problems.
733 * Change src/rdsrc.pl to include sectioning information in info
734 output; required for install-info to work.
735 * Updated the RDOFF distribution to version 2 from Jules; minor
736 massaging to make it compile in my environment.
737 * Split doc files that can be built by anyone with a Perl interpreter off
738 into a separate archive.
739 * "Dress rehearsal" release!
745 * Fixed opcodes with a third byte-sized immediate argument to not
746 complain if given "byte" on the immediate.
747 * Allow %undef to remove single-line macros with arguments. This
748 matches the behaviour of #undef in the C preprocessor.
749 * Allow -d, -u, -i and -p to be specified as -D, -U, -I and -P for
750 compatibility with most C compilers and preprocessors. This allows
751 Makefile options to be shared between cc and nasm, for example.
753 * Went through the list of Katmai instructions and hopefully fixed the
754 (rather few) mistakes in it.
755 * (Hopefully) fixed a number of disassembler bugs related to ambiguous
756 instructions (disambiguated by -p) and SSE instructions with REP.
757 * Fix for bug reported by Mark Junger: "call dword 0x12345678" should
758 work and may add an OSP (affected CALL, JMP, Jcc).
759 * Fix for environments when "stderr" isn't a compile-time constant.
765 * Took officially over coordination of the 0.98 release; so drop
766 the p3.x notation. Skipped p4 and p5 to avoid confusion with John
767 Fine's J4 and J5 releases.
768 * Update the documentation; however, it still doesn't include
769 documentation for the various new instructions. I somehow wonder if
770 it makes sense to have an instruction set reference in the assembler
771 manual when Intel et al have PDF versions of their manuals online.
772 * Recognize "idt" or "centaur" for the -p option to ndisasm.
773 * Changed error messages back to stderr where they belong, but add an
774 -E option to redirect them elsewhere (the DOS shell cannot redirect
776 * -M option to generate Makefile dependencies (based on code from Alex
778 * %undef preprocessor directive, and -u option, that undefines a
780 * OS/2 Makefile (Mkfiles/Makefile.os2) for Borland under OS/2; from
782 * Various minor bugfixes (reported by):
783 - Dangling %s in preproc.c (Martin Junker)
784 * THERE ARE KNOWN BUGS IN SSE AND THE OTHER KATMAI INSTRUCTIONS. I am
785 on a trip and didn't bring the Katmai instruction reference, so I
786 can't work on them right now.
787 * Updated the License file per agreement with Simon and Jules to
788 include a GPL distribution clause.
794 * (Hopefully) fixed the canned Makefiles to include the outrdf2 and
796 * Renamed changes.asm to changed.asm.
802 * Fixed a bunch of instructions that were added in 0.98p3.5 which had
803 memory operands, and the address-size prefix was missing from the
810 * Merged in changes from John S. Fine's 0.98-J5 release. John's based
811 0.98-J5 on my 0.98p3.3 release; this merges the changes.
812 * Expanded the instructions flag field to a long so we can fit more
813 flags; mark SSE (KNI) and AMD or Katmai-specific instructions as
815 * Fix the "PRIV" flag on a bunch of instructions, and create new
816 "PROT" flag for protected-mode-only instructions (orthogonal to if
817 the instruction is privileged!) and new "SMM" flag for SMM-only
819 * Added AMD-only SYSCALL and SYSRET instructions.
820 * Make SSE actually work, and add new Katmai MMX instructions.
821 * Added a -p (preferred vendor) option to ndisasm so that it can
822 distinguish e.g. Cyrix opcodes also used in SSE. For example:
824 ndisasm -p cyrix aliased.bin
825 00000000 670F514310 paddsiw mm0,[ebx+0x10]
826 00000005 670F514320 paddsiw mm0,[ebx+0x20]
827 ndisasm -p intel aliased.bin
828 00000000 670F514310 sqrtps xmm0,[ebx+0x10]
829 00000005 670F514320 sqrtps xmm0,[ebx+0x20]
830 * Added a bunch of Cyrix-specific instructions.
836 * Made at least an attempt to modify all the additional Makefiles (in
837 the Mkfiles directory). I can't test it, but this was the best I
839 * DOS DJGPP+"Opus Make" Makefile from John S. Fine.
840 * changes.asm changes from John S. Fine.
846 * Patch from Conan Brink to allow nesting of %rep directives.
847 * If we're going to allow INT01 as an alias for INT1/ICEBP (one of
848 Jules 0.98p3 changes), then we should allow INT03 as an alias for INT3
850 * Updated changes.asm to include the latest changes.
851 * Tried to clean up the <CR>s that had snuck in from a DOS/Windows
852 environment into my Unix environment, and try to make sure than
853 DOS/Windows users get them back.
854 * We would silently generate broken tools if insns.dat wasn't sorted
855 properly. Change insns.pl so that the order doesn't matter.
856 * Fix bug in insns.pl (introduced by me) which would cause conditional
857 instructions to have an extra "cc" in disassembly, e.g. "jnz"
858 disassembled as "jccnz".
864 * Merged in John S. Fine's changes from his 0.98-J4 prerelease; see
865 http://www.csoft.net/cz/johnfine/
866 * Changed previous "spotless" Makefile target (appropriate for distribution)
867 to "distclean", and added "cleaner" target which is same as "clean"
868 except deletes files generated by Perl scripts; "spotless" is union.
869 * Removed BASIC programs from distribution. Get a Perl interpreter
871 * Calling this "pre-release 3.2" rather than "p3-hpa2" because of
872 John's contributions.
873 * Actually link in the IEEE output format (zoutieee.c); fix a bunch of
874 compiler warnings in that file. Note I don't know what IEEE output
875 is supposed to look like, so these changes were made "blind".
881 * Merged nasm098p3.zip with nasm-0.97.tar.gz to create a fully
882 buildable version for Unix systems (Makefile.in updates, etc.)
883 * Changed insns.pl to create the instruction tables in nasm.h and
884 names.c, so that a new instruction can be added by adding it *only*
886 * Added the following new instructions: SYSENTER, SYSEXIT, FXSAVE,
887 FXRSTOR, UD1, UD2 (the latter two are two opcodes that Intel
888 guarantee will never be used; one of them is documented as UD2 in
889 Intel documentation, the other one just as "Undefined Opcode" --
890 calling it UD1 seemed to make sense.)
891 * MAX_SYMBOL was defined to be 9, but LOADALL286 and LOADALL386 are 10
892 characters long. Now MAX_SYMBOL is derived from insns.dat.
893 * A note on the BASIC programs included: forget them. insns.bas is
894 already out of date. Get yourself a Perl interpreter for your
895 platform of choice at:
897 http://www.cpan.org/ports/index.html
903 added response file support, improved command line handling, new layout
906 fixed limit checking bug, 'OUT byte nn, reg' bug, and a couple of rdoff
907 related bugs, updated Wishlist; 0.98 Prerelease 3.
913 fixed bug in outcoff.c to do with truncating section names longer
914 than 8 characters, referencing beyond end of string; 0.98 pre-release 2
917 0.98 pre-released May 1999
918 --------------------------
920 Fixed a bug whereby STRUC didn't work at all in RDF.
922 Fixed a problem with group specification in PUBDEFs in OBJ.
924 Improved ease of adding new output formats. Contribution due to
927 Fixed a bug in relocations in the `bin' format: was showing up when
928 a relocatable reference crossed an 8192-byte boundary in any output
931 Fixed a bug in local labels: local-label lookups were inconsistent
932 between passes one and two if an EQU occurred between the definition
933 of a global label and the subsequent use of a local label local to
936 Fixed a seg-fault in the preprocessor (again) which happened when
937 you use a blank line as the first line of a multi-line macro
938 definition and then defined a label on the same line as a call to
941 Fixed a stale-pointer bug in the handling of the NASM environment
942 variable. Thanks to Thomas McWilliams.
944 ELF had a hard limit on the number of sections which caused
945 segfaults when transgressed. Fixed.
947 Added ability for ndisasm to read from stdin by using `-' as the
950 ndisasm wasn't outputting the TO keyword. Fixed.
952 Fixed error cascade on bogus expression in %if - an error in
953 evaluation was causing the entire %if to be discarded, thus creating
954 trouble later when the %else or %endif was encountered.
956 Forward reference tracking was instruction-granular not operand-
957 granular, which was causing 286-specific code to be generated
958 needlessly on code of the form `shr word [forwardref],1'. Thanks to
959 Jim Hague for sending a patch.
961 All messages now appear on stdout, as sending them to stderr serves
962 no useful purpose other than to make redirection difficult.
964 Fixed the problem with EQUs pointing to an external symbol - this
965 now generates an error message.
967 Allowed multiple size prefixes to an operand, of which only the first
968 is taken into account.
970 Incorporated John Fine's changes, including fixes of a large number
971 of preprocessor bugs, some small problems in OBJ, and a reworking of
972 label handling to define labels before their line is assembled, rather
975 Reformatted a lot of the source code to be more readable. Included
976 'coding.txt' as a guideline for how to format code for contributors.
978 Stopped nested %reps causing a panic - they now cause a slightly more
979 friendly error message instead.
981 Fixed floating point constant problems (patch by Pedro Gimeno)
983 Fixed the return value of insn_size() not being checked for -1, indicating
986 Incorporated 3D now instructions.
988 Fixed the 'mov eax, eax + ebx' bug.
990 Fixed the GLOBAL EQU bug in ELF. Released developers release 3.
992 Incorporated John Fine's command line parsing changes
994 Incorporated David Lindauer's OMF debug support
996 Made changes for LCC 4.0 support (__NASM_CDecl__, removed register size
997 specification warning when sizes agree).
999 Released NASM 0.98 Pre-release 1
1002 0.97 released December 1997
1003 ---------------------------
1005 This was entirely a bug-fix release to 0.96, which seems to have got
1008 Fixed stupid mistake in OBJ which caused `MOV EAX,<constant>' to
1009 fail. Caused by an error in the `MOV EAX,<segment>' support.
1011 ndisasm hung at EOF when compiled with lcc on Linux because lcc on
1012 Linux somehow breaks feof(). ndisasm now does not rely on feof().
1014 A heading in the documentation was missing due to a markup error in
1015 the indexing. Fixed.
1017 Fixed failure to update all pointers on realloc() within extended-
1018 operand code in parser.c. Was causing wrong behaviour and seg faults
1019 on lines such as `dd 0.0,0.0,0.0,0.0,...'
1021 Fixed a subtle preprocessor bug whereby invoking one multi-line
1022 macro on the first line of the expansion of another, when the second
1023 had been invoked with a label defined before it, didn't expand the
1026 Added internal.doc back in to the distribution archives - it was
1027 missing in 0.96 *blush*
1029 Fixed bug causing 0.96 to be unable to assemble its own test files,
1030 specifically objtest.asm. *blush again*
1032 Fixed seg-faults and bogus error messages caused by mismatching
1033 %rep and %endrep within multi-line macro definitions.
1035 Fixed a problem with buffer overrun in OBJ, which was causing
1036 corruption at ends of long PUBDEF records.
1038 Separated DOS archives into main-program and documentation to reduce
1042 0.96 released November 1997
1043 ---------------------------
1045 Fixed a bug whereby, if `nasm sourcefile' would cause a filename
1046 collision warning and put output into `nasm.out', then `nasm
1047 sourcefile -o outputfile' still gave the warning even though the
1050 Fixed name pollution under Digital UNIX: one of its header files
1051 defined R_SP, which broke the enum in nasm.h.
1053 Fixed minor instruction table problems: FUCOM and FUCOMP didn't have
1054 two-operand forms; NDISASM didn't recognise the longer register
1055 forms of PUSH and POP (eg FF F3 for PUSH BX); TEST mem,imm32 was
1056 flagged as undocumented; the 32-bit forms of CMOV had 16-bit operand
1057 size prefixes; `AAD imm' and `AAM imm' are no longer flagged as
1058 undocumented because the Intel Architecture reference documents
1061 Fixed a problem with the local-label mechanism, whereby strange
1062 types of symbol (EQUs, auto-defined OBJ segment base symbols)
1063 interfered with the `previous global label' value and screwed up
1066 Fixed a bug whereby the stub preprocessor didn't communicate with
1067 the listing file generator, so that the -a and -l options in
1068 conjunction would produce a useless listing file.
1070 Merged `os2' object file format back into `obj', after discovering
1071 that `obj' _also_ shouldn't have a link pass separator in a module
1072 containing a non-trivial MODEND. Flat segments are now declared
1073 using the FLAT attribute. `os2' is no longer a valid object format
1076 Removed the fixed-size temporary storage in the evaluator. Very very
1077 long expressions (like `mov ax,1+1+1+1+...' for two hundred 1s or
1078 so) should now no longer crash NASM.
1080 Fixed a bug involving segfaults on disassembly of MMX instructions,
1081 by changing the meaning of one of the operand-type flags in nasm.h.
1082 This may cause other apparently unrelated MMX problems; it needs to
1083 be tested thoroughly.
1085 Fixed some buffer overrun problems with large OBJ output files.
1086 Thanks to DJ Delorie for the bug report and fix.
1088 Made preprocess-only mode actually listen to the %line markers as it
1089 prints them, so that it can report errors more sanely.
1091 Re-designed the evaluator to keep more sensible track of expressions
1092 involving forward references: can now cope with previously-nightmare
1098 Added the ALIGN and ALIGNB standard macros.
1100 Added PIC support in ELF: use of WRT to obtain the four extra
1101 relocation types needed.
1103 Added the ability for output file formats to define their own
1104 extensions to the GLOBAL, COMMON and EXTERN directives.
1106 Implemented common-variable alignment, and global-symbol type and
1107 size declarations, in ELF.
1109 Implemented NEAR and FAR keywords for common variables, plus
1110 far-common element size specification, in OBJ.
1112 Added a feature whereby EXTERNs and COMMONs in OBJ can be given a
1113 default WRT specification (either a segment or a group).
1115 Transformed the Unix NASM archive into an auto-configuring package.
1117 Added a sanity-check for people applying SEG to things which are
1118 already segment bases: this previously went unnoticed by the SEG
1119 processing and caused OBJ-driver panics later.
1121 Added the ability, in OBJ format, to deal with `MOV EAX,<segment>'
1122 type references: OBJ doesn't directly support dword-size segment
1123 base fixups, but as long as the low two bytes of the constant term
1124 are zero, a word-size fixup can be generated instead and it will
1127 Added the ability to specify sections' alignment requirements in
1128 Win32 object files and pure binary files.
1130 Added preprocess-time expression evaluation: the %assign (and
1131 %iassign) directive and the bare %if (and %elif) conditional. Added
1132 relational operators to the evaluator, for use only in %if
1133 constructs: the standard relationals = < > <= >= <> (and C-like
1134 synonyms == and !=) plus low-precedence logical operators &&, ^^ and
1137 Added a preprocessor repeat construct: %rep / %exitrep / %endrep.
1139 Added the __FILE__ and __LINE__ standard macros.
1141 Added a sanity check for number constants being greater than
1142 0xFFFFFFFF. The warning can be disabled.
1144 Added the %0 token whereby a variadic multi-line macro can tell how
1145 many parameters it's been given in a specific invocation.
1147 Added %rotate, allowing multi-line macro parameters to be cycled.
1149 Added the `*' option for the maximum parameter count on multi-line
1150 macros, allowing them to take arbitrarily many parameters.
1152 Added the ability for the user-level forms of EXTERN, GLOBAL and
1153 COMMON to take more than one argument.
1155 Added the IMPORT and EXPORT directives in OBJ format, to deal with
1158 Added some more preprocessor %if constructs: %ifidn / %ifidni (exact
1159 textual identity), and %ifid / %ifnum / %ifstr (token type testing).
1161 Added the ability to distinguish SHL AX,1 (the 8086 version) from
1162 SHL AX,BYTE 1 (the 286-and-upwards version whose constant happens to
1165 Added NetBSD/FreeBSD/OpenBSD's variant of a.out format, complete
1166 with PIC shared library features.
1168 Changed NASM's idiosyncratic handling of FCLEX, FDISI, FENI, FINIT,
1169 FSAVE, FSTCW, FSTENV, and FSTSW to bring it into line with the
1170 otherwise accepted standard. The previous behaviour, though it was a
1171 deliberate feature, was a deliberate feature based on a
1172 misunderstanding. Apologies for the inconvenience.
1174 Improved the flexibility of ABSOLUTE: you can now give it an
1175 expression rather than being restricted to a constant, and it can
1176 take relocatable arguments as well.
1178 Added the ability for a variable to be declared as EXTERN multiple
1179 times, and the subsequent definitions are just ignored.
1181 We now allow instruction prefixes (CS, DS, LOCK, REPZ etc) to be
1182 alone on a line (without a following instruction).
1184 Improved sanity checks on whether the arguments to EXTERN, GLOBAL
1185 and COMMON are valid identifiers.
1187 Added misc/exebin.mac to allow direct generation of .EXE files by
1188 hacking up an EXE header using DB and DW; also added test/binexe.asm
1189 to demonstrate the use of this. Thanks to Yann Guidon for
1190 contributing the EXE header code.
1192 ndisasm forgot to check whether the input file had been successfully
1193 opened. Now it does. Doh!
1195 Added the Cyrix extensions to the MMX instruction set.
1197 Added a hinting mechanism to allow [EAX+EBX] and [EBX+EAX] to be
1198 assembled differently. This is important since [ESI+EBP] and
1199 [EBP+ESI] have different default base segment registers.
1201 Added support for the PharLap OMF extension for 4096-byte segment
1205 0.95 released July 1997
1206 -----------------------
1208 Fixed yet another ELF bug. This one manifested if the user relied on
1209 the default segment, and attempted to define global symbols without
1210 first explicitly declaring the target segment.
1212 Added makefiles (for NASM and the RDF tools) to build Win32 console
1213 apps under Symantec C++. Donated by Mark Junker.
1215 Added `macros.bas' and `insns.bas', QBasic versions of the Perl
1216 scripts that convert `standard.mac' to `macros.c' and convert
1217 `insns.dat' to `insnsa.c' and `insnsd.c'. Also thanks to Mark
1220 Changed the diassembled forms of the conditional instructions so
1221 that JB is now emitted as JC, and other similar changes. Suggested
1222 list by Ulrich Doewich.
1224 Added `@' to the list of valid characters to begin an identifier
1227 Documentary changes, notably the addition of the `Common Problems'
1228 section in nasm.doc.
1230 Fixed a bug relating to 32-bit PC-relative fixups in OBJ.
1232 Fixed a bug in perm_copy() in labels.c which was causing exceptions
1233 in cleanup_labels() on some systems.
1235 Positivity sanity check in TIMES argument changed from a warning to
1236 an error following a further complaint.
1238 Changed the acceptable limits on byte and word operands to allow
1239 things like `~10111001b' to work.
1241 Fixed a major problem in the preprocessor which caused seg-faults if
1242 macro definitions contained blank lines or comment-only lines.
1244 Fixed inadequate error checking on the commas separating the
1245 arguments to `db', `dw' etc.
1247 Fixed a crippling bug in the handling of macros with operand counts
1248 defined with a `+' modifier.
1250 Fixed a bug whereby object file formats which stored the input file
1251 name in the output file (such as OBJ and COFF) weren't doing so
1252 correctly when the output file name was specified on the command
1255 Removed [INC] and [INCLUDE] support for good, since they were
1258 Fixed a bug in OBJ which caused all fixups to be output in 16-bit
1259 (old-format) FIXUPP records, rather than putting the 32-bit ones in
1260 FIXUPP32 (new-format) records.
1262 Added, tentatively, OS/2 object file support (as a minor variant on
1265 Updates to Fox Cutter's Borland C makefile, Makefile.bc2.
1267 Removed a spurious second fclose() on the output file.
1269 Added the `-s' command line option to redirect all messages which
1270 would go to stderr (errors, help text) to stdout instead.
1272 Added the `-w' command line option to selectively suppress some
1273 classes of assembly warning messages.
1275 Added the `-p' pre-include and `-d' pre-define command-line options.
1277 Added an include file search path: the `-i' command line option.
1279 Fixed a silly little preprocessor bug whereby starting a line with a
1280 `%!' environment-variable reference caused an `unknown directive'
1283 Added the long-awaited listing file support: the `-l' command line
1286 Fixed a problem with OBJ format whereby, in the absence of any
1287 explicit segment definition, non-global symbols declared in the
1288 implicit default segment generated spurious EXTDEF records in the
1291 Added the NASM environment variable.
1293 From this version forward, Win32 console-mode binaries will be
1294 included in the DOS distribution in addition to the 16-bit binaries.
1295 Added Makefile.vc for this purpose.
1297 Added `return 0;' to test/objlink.c to prevent compiler warnings.
1299 Added the __NASM_MAJOR__ and __NASM_MINOR__ standard defines.
1301 Added an alternative memory-reference syntax in which prefixing an
1302 operand with `&' is equivalent to enclosing it in square brackets,
1303 at the request of Fox Cutter.
1305 Errors in pass two now cause the program to return a non-zero error
1306 code, which they didn't before.
1308 Fixed the single-line macro cycle detection, which didn't work at
1309 all on macros with no parameters (caused an infinite loop). Also
1310 changed the behaviour of single-line macro cycle detection to work
1311 like cpp, so that macros like `extrn' as given in the documentation
1314 Fixed the implementation of WRT, which was too restrictive in that
1315 you couldn't do `mov ax,[di+abc wrt dgroup]' because (di+abc) wasn't
1316 a relocatable reference.
1319 0.94 released April 1997
1320 ------------------------
1322 Major item: added the macro processor.
1324 Added undocumented instructions SMI, IBTS, XBTS and LOADALL286. Also
1325 reorganised CMPXCHG instruction into early-486 and Pentium forms.
1326 Thanks to Thobias Jones for the information.
1328 Fixed two more stupid bugs in ELF, which were causing `ld' to
1329 continue to seg-fault in a lot of non-trivial cases.
1331 Fixed a seg-fault in the label manager.
1333 Stopped FBLD and FBSTP from _requiring_ the TWORD keyword, which is
1334 the only option for BCD loads/stores in any case.
1336 Ensured FLDCW, FSTCW and FSTSW can cope with the WORD keyword, if
1337 anyone bothers to provide it. Previously they complained unless no
1338 keyword at all was present.
1340 Some forms of FDIV/FDIVR and FSUB/FSUBR were still inverted: a
1341 vestige of a bug that I thought had been fixed in 0.92. This was
1342 fixed, hopefully for good this time...
1344 Another minor phase error (insofar as a phase error can _ever_ be
1345 minor) fixed, this one occurring in code of the form
1346 rol ax,forward_reference
1347 forward_reference equ 1
1349 The number supplied to TIMES is now sanity-checked for positivity,
1350 and also may be greater than 64K (which previously didn't work on
1353 Added Watcom C makefiles, and misc/pmw.bat, donated by Dominik Behr.
1355 Added the INCBIN pseudo-opcode.
1357 Due to the advent of the preprocessor, the [INCLUDE] and [INC]
1358 directives have become obsolete. They are still supported in this
1359 version, with a warning, but won't be in the next.
1361 Fixed a bug in OBJ format, which caused incorrect object records to
1362 be output when absolute labels were made global.
1364 Updates to RDOFF subdirectory, and changes to outrdf.c.
1367 0.93 released January 1997
1368 --------------------------
1370 This release went out in a great hurry after semi-crippling bugs
1373 Really _did_ fix the stack overflows this time. *blush*
1375 Had problems with EA instruction sizes changing between passes, when
1376 an offset contained a forward reference and so 4 bytes were
1377 allocated for the offset in pass one; by pass two the symbol had
1378 been defined and happened to be a small absolute value, so only 1
1379 byte got allocated, causing instruction size mismatch between passes
1380 and hence incorrect address calculations. Fixed.
1382 Stupid bug in the revised ELF section generation fixed (associated
1383 string-table section for .symtab was hard-coded as 7, even when this
1384 didn't fit with the real section table). Was causing `ld' to
1385 seg-fault under Linux.
1387 Included a new Borland C makefile, Makefile.bc2, donated by Fox
1388 Cutter <lmb@comtch.iea.com>.
1391 0.92 released January 1997
1392 --------------------------
1394 The FDIVP/FDIVRP and FSUBP/FSUBRP pairs had been inverted: this was
1395 fixed. This also affected the LCC driver.
1397 Fixed a bug regarding 32-bit effective addresses of the form
1398 [other_register+ESP].
1400 Documentary changes, notably documentation of the fact that Borland
1401 Win32 compilers use `obj' rather than `win32' object format.
1403 Fixed the COMENT record in OBJ files, which was formatted
1406 Fixed a bug causing segfaults in large RDF files.
1408 OBJ format now strips initial periods from segment and group
1409 definitions, in order to avoid complications with the local label
1412 Fixed a bug in disassembling far calls and jumps in NDISASM.
1414 Added support for user-defined sections in COFF and ELF files.
1416 Compiled the DOS binaries with a sensible amount of stack, to
1417 prevent stack overflows on any arithmetic expression containing
1420 Fixed a bug in handling of files that do not terminate in a newline.
1423 0.91 released November 1996
1424 ---------------------------
1427 Support for RDF added.
1428 Support for DBG debugging format added.
1429 Support for 32-bit extensions to Microsoft OBJ format added.
1430 Revised for Borland C: some variable names changed, makefile added.
1431 LCC support revised to actually work.
1432 JMP/CALL NEAR/FAR notation added.
1433 `a16', `o16', `a32' and `o32' prefixes added.
1434 Range checking on short jumps implemented.
1435 MMX instruction support added.
1436 Negative floating point constant support added.
1437 Memory handling improved to bypass 64K barrier under DOS.
1438 $ prefix to force treatment of reserved words as identifiers added.
1439 Default-size mechanism for object formats added.
1440 Compile-time configurability added.
1441 `#', `@', `~' and `?' are now valid characters in labels.
1442 `-e' and `-k' options in NDISASM added.
1445 0.90 released October 1996
1446 --------------------------
1448 First release version. First support for object file output. Other
1449 changes from previous version (0.3x) too numerous to document.
projects / platform / upstream / nasm.git / blob