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diff --git a/Changes b/Changes deleted file mode 100644 index f383182e..00000000 --- a/Changes +++ /dev/null @@ -1,542 +0,0 @@ -Change log for NASM -=================== - -This is the Changelog for the official releases; this is a modified -version. For the changes from the official release, see the MODIFIED file. - -0.90 released October 1996 --------------------------- - -First release version. First support for object file output. Other -changes from previous version (0.3x) too numerous to document. - -0.91 released November 1996 ---------------------------- - -Loads of bug fixes. -Support for RDF added. -Support for DBG debugging format added. -Support for 32-bit extensions to Microsoft OBJ format added. -Revised for Borland C: some variable names changed, makefile added. -LCC support revised to actually work. -JMP/CALL NEAR/FAR notation added. -`a16', `o16', `a32' and `o32' prefixes added. -Range checking on short jumps implemented. -MMX instruction support added. -Negative floating point constant support added. -Memory handling improved to bypass 64K barrier under DOS. -$ prefix to force treatment of reserved words as identifiers added. -Default-size mechanism for object formats added. -Compile-time configurability added. -`#', `@', `~' and `?' are now valid characters in labels. -`-e' and `-k' options in NDISASM added. - -0.92 released January 1997 --------------------------- - -The FDIVP/FDIVRP and FSUBP/FSUBRP pairs had been inverted: this was -fixed. This also affected the LCC driver. - -Fixed a bug regarding 32-bit effective addresses of the form -[other_register+ESP]. - -Documentary changes, notably documentation of the fact that Borland -Win32 compilers use `obj' rather than `win32' object format. - -Fixed the COMENT record in OBJ files, which was formatted -incorrectly. - -Fixed a bug causing segfaults in large RDF files. - -OBJ format now strips initial periods from segment and group -definitions, in order to avoid complications with the local label -syntax. - -Fixed a bug in disassembling far calls and jumps in NDISASM. - -Added support for user-defined sections in COFF and ELF files. - -Compiled the DOS binaries with a sensible amount of stack, to -prevent stack overflows on any arithmetic expression containing -parentheses. - -Fixed a bug in handling of files that do not terminate in a newline. - -0.93 released January 1997 --------------------------- - -This release went out in a great hurry after semi-crippling bugs -were found in 0.92. - -Really _did_ fix the stack overflows this time. *blush* - -Had problems with EA instruction sizes changing between passes, when -an offset contained a forward reference and so 4 bytes were -allocated for the offset in pass one; by pass two the symbol had -been defined and happened to be a small absolute value, so only 1 -byte got allocated, causing instruction size mismatch between passes -and hence incorrect address calculations. Fixed. - -Stupid bug in the revised ELF section generation fixed (associated -string-table section for .symtab was hard-coded as 7, even when this -didn't fit with the real section table). Was causing `ld' to -seg-fault under Linux. - -Included a new Borland C makefile, Makefile.bc2, donated by Fox -Cutter <lmb@comtch.iea.com>. - -0.94 released April 1997 ------------------------- - -Major item: added the macro processor. - -Added undocumented instructions SMI, IBTS, XBTS and LOADALL286. Also -reorganised CMPXCHG instruction into early-486 and Pentium forms. -Thanks to Thobias Jones for the information. - -Fixed two more stupid bugs in ELF, which were causing `ld' to -continue to seg-fault in a lot of non-trivial cases. - -Fixed a seg-fault in the label manager. - -Stopped FBLD and FBSTP from _requiring_ the TWORD keyword, which is -the only option for BCD loads/stores in any case. - -Ensured FLDCW, FSTCW and FSTSW can cope with the WORD keyword, if -anyone bothers to provide it. Previously they complained unless no -keyword at all was present. - -Some forms of FDIV/FDIVR and FSUB/FSUBR were still inverted: a -vestige of a bug that I thought had been fixed in 0.92. This was -fixed, hopefully for good this time... - -Another minor phase error (insofar as a phase error can _ever_ be -minor) fixed, this one occurring in code of the form - rol ax,forward_reference - forward_reference equ 1 - -The number supplied to TIMES is now sanity-checked for positivity, -and also may be greater than 64K (which previously didn't work on -16-bit systems). - -Added Watcom C makefiles, and misc/pmw.bat, donated by Dominik Behr. - -Added the INCBIN pseudo-opcode. - -Due to the advent of the preprocessor, the [INCLUDE] and [INC] -directives have become obsolete. They are still supported in this -version, with a warning, but won't be in the next. - -Fixed a bug in OBJ format, which caused incorrect object records to -be output when absolute labels were made global. - -Updates to RDOFF subdirectory, and changes to outrdf.c. - -0.95 released July 1997 ------------------------ - -Fixed yet another ELF bug. This one manifested if the user relied on -the default segment, and attempted to define global symbols without -first explicitly declaring the target segment. - -Added makefiles (for NASM and the RDF tools) to build Win32 console -apps under Symantec C++. Donated by Mark Junker. - -Added `macros.bas' and `insns.bas', QBasic versions of the Perl -scripts that convert `standard.mac' to `macros.c' and convert -`insns.dat' to `insnsa.c' and `insnsd.c'. Also thanks to Mark -Junker. - -Changed the diassembled forms of the conditional instructions so -that JB is now emitted as JC, and other similar changes. Suggested -list by Ulrich Doewich. - -Added `@' to the list of valid characters to begin an identifier -with. - -Documentary changes, notably the addition of the `Common Problems' -section in nasm.doc. - -Fixed a bug relating to 32-bit PC-relative fixups in OBJ. - -Fixed a bug in perm_copy() in labels.c which was causing exceptions -in cleanup_labels() on some systems. - -Positivity sanity check in TIMES argument changed from a warning to -an error following a further complaint. - -Changed the acceptable limits on byte and word operands to allow -things like `~10111001b' to work. - -Fixed a major problem in the preprocessor which caused seg-faults if -macro definitions contained blank lines or comment-only lines. - -Fixed inadequate error checking on the commas separating the -arguments to `db', `dw' etc. - -Fixed a crippling bug in the handling of macros with operand counts -defined with a `+' modifier. - -Fixed a bug whereby object file formats which stored the input file -name in the output file (such as OBJ and COFF) weren't doing so -correctly when the output file name was specified on the command -line. - -Removed [INC] and [INCLUDE] support for good, since they were -obsolete anyway. - -Fixed a bug in OBJ which caused all fixups to be output in 16-bit -(old-format) FIXUPP records, rather than putting the 32-bit ones in -FIXUPP32 (new-format) records. - -Added, tentatively, OS/2 object file support (as a minor variant on -OBJ). - -Updates to Fox Cutter's Borland C makefile, Makefile.bc2. - -Removed a spurious second fclose() on the output file. - -Added the `-s' command line option to redirect all messages which -would go to stderr (errors, help text) to stdout instead. - -Added the `-w' command line option to selectively suppress some -classes of assembly warning messages. - -Added the `-p' pre-include and `-d' pre-define command-line options. - -Added an include file search path: the `-i' command line option. - -Fixed a silly little preprocessor bug whereby starting a line with a -`%!' environment-variable reference caused an `unknown directive' -error. - -Added the long-awaited listing file support: the `-l' command line -option. - -Fixed a problem with OBJ format whereby, in the absence of any -explicit segment definition, non-global symbols declared in the -implicit default segment generated spurious EXTDEF records in the -output. - -Added the NASM environment variable. - -From this version forward, Win32 console-mode binaries will be -included in the DOS distribution in addition to the 16-bit binaries. -Added Makefile.vc for this purpose. - -Added `return 0;' to test/objlink.c to prevent compiler warnings. - -Added the __NASM_MAJOR__ and __NASM_MINOR__ standard defines. - -Added an alternative memory-reference syntax in which prefixing an -operand with `&' is equivalent to enclosing it in square brackets, -at the request of Fox Cutter. - -Errors in pass two now cause the program to return a non-zero error -code, which they didn't before. - -Fixed the single-line macro cycle detection, which didn't work at -all on macros with no parameters (caused an infinite loop). Also -changed the behaviour of single-line macro cycle detection to work -like cpp, so that macros like `extrn' as given in the documentation -can be implemented. - -Fixed the implementation of WRT, which was too restrictive in that -you couldn't do `mov ax,[di+abc wrt dgroup]' because (di+abc) wasn't -a relocatable reference. - -0.96 released November 1997 ---------------------------- - -Fixed a bug whereby, if `nasm sourcefile' would cause a filename -collision warning and put output into `nasm.out', then `nasm -sourcefile -o outputfile' still gave the warning even though the -`-o' was honoured. - -Fixed name pollution under Digital UNIX: one of its header files -defined R_SP, which broke the enum in nasm.h. - -Fixed minor instruction table problems: FUCOM and FUCOMP didn't have -two-operand forms; NDISASM didn't recognise the longer register -forms of PUSH and POP (eg FF F3 for PUSH BX); TEST mem,imm32 was -flagged as undocumented; the 32-bit forms of CMOV had 16-bit operand -size prefixes; `AAD imm' and `AAM imm' are no longer flagged as -undocumented because the Intel Architecture reference documents -them. - -Fixed a problem with the local-label mechanism, whereby strange -types of symbol (EQUs, auto-defined OBJ segment base symbols) -interfered with the `previous global label' value and screwed up -local labels. - -Fixed a bug whereby the stub preprocessor didn't communicate with -the listing file generator, so that the -a and -l options in -conjunction would produce a useless listing file. - -Merged `os2' object file format back into `obj', after discovering -that `obj' _also_ shouldn't have a link pass separator in a module -containing a non-trivial MODEND. Flat segments are now declared -using the FLAT attribute. `os2' is no longer a valid object format -name: use `obj'. - -Removed the fixed-size temporary storage in the evaluator. Very very -long expressions (like `mov ax,1+1+1+1+...' for two hundred 1s or -so) should now no longer crash NASM. - -Fixed a bug involving segfaults on disassembly of MMX instructions, -by changing the meaning of one of the operand-type flags in nasm.h. -This may cause other apparently unrelated MMX problems; it needs to -be tested thoroughly. - -Fixed some buffer overrun problems with large OBJ output files. -Thanks to DJ Delorie for the bug report and fix. - -Made preprocess-only mode actually listen to the %line markers as it -prints them, so that it can report errors more sanely. - -Re-designed the evaluator to keep more sensible track of expressions -involving forward references: can now cope with previously-nightmare -situations such as - mov ax,foo | bar - foo equ 1 - bar equ 2 - -Added the ALIGN and ALIGNB standard macros. - -Added PIC support in ELF: use of WRT to obtain the four extra -relocation types needed. - -Added the ability for output file formats to define their own -extensions to the GLOBAL, COMMON and EXTERN directives. - -Implemented common-variable alignment, and global-symbol type and -size declarations, in ELF. - -Implemented NEAR and FAR keywords for common variables, plus -far-common element size specification, in OBJ. - -Added a feature whereby EXTERNs and COMMONs in OBJ can be given a -default WRT specification (either a segment or a group). - -Transformed the Unix NASM archive into an auto-configuring package. - -Added a sanity-check for people applying SEG to things which are -already segment bases: this previously went unnoticed by the SEG -processing and caused OBJ-driver panics later. - -Added the ability, in OBJ format, to deal with `MOV EAX,<segment>' -type references: OBJ doesn't directly support dword-size segment -base fixups, but as long as the low two bytes of the constant term -are zero, a word-size fixup can be generated instead and it will -work. - -Added the ability to specify sections' alignment requirements in -Win32 object files and pure binary files. - -Added preprocess-time expression evaluation: the %assign (and -%iassign) directive and the bare %if (and %elif) conditional. Added -relational operators to the evaluator, for use only in %if -constructs: the standard relationals = < > <= >= <> (and C-like -synonyms == and !=) plus low-precedence logical operators &&, ^^ and -||. - -Added a preprocessor repeat construct: %rep / %exitrep / %endrep. - -Added the __FILE__ and __LINE__ standard macros. - -Added a sanity check for number constants being greater than -0xFFFFFFFF. The warning can be disabled. - -Added the %0 token whereby a variadic multi-line macro can tell how -many parameters it's been given in a specific invocation. - -Added %rotate, allowing multi-line macro parameters to be cycled. - -Added the `*' option for the maximum parameter count on multi-line -macros, allowing them to take arbitrarily many parameters. - -Added the ability for the user-level forms of EXTERN, GLOBAL and -COMMON to take more than one argument. - -Added the IMPORT and EXPORT directives in OBJ format, to deal with -Windows DLLs. - -Added some more preprocessor %if constructs: %ifidn / %ifidni (exact -textual identity), and %ifid / %ifnum / %ifstr (token type testing). - -Added the ability to distinguish SHL AX,1 (the 8086 version) from -SHL AX,BYTE 1 (the 286-and-upwards version whose constant happens to -be 1). - -Added NetBSD/FreeBSD/OpenBSD's variant of a.out format, complete -with PIC shared library features. - -Changed NASM's idiosyncratic handling of FCLEX, FDISI, FENI, FINIT, -FSAVE, FSTCW, FSTENV, and FSTSW to bring it into line with the -otherwise accepted standard. The previous behaviour, though it was a -deliberate feature, was a deliberate feature based on a -misunderstanding. Apologies for the inconvenience. - -Improved the flexibility of ABSOLUTE: you can now give it an -expression rather than being restricted to a constant, and it can -take relocatable arguments as well. - -Added the ability for a variable to be declared as EXTERN multiple -times, and the subsequent definitions are just ignored. - -We now allow instruction prefixes (CS, DS, LOCK, REPZ etc) to be -alone on a line (without a following instruction). - -Improved sanity checks on whether the arguments to EXTERN, GLOBAL -and COMMON are valid identifiers. - -Added misc/exebin.mac to allow direct generation of .EXE files by -hacking up an EXE header using DB and DW; also added test/binexe.asm -to demonstrate the use of this. Thanks to Yann Guidon for -contributing the EXE header code. - -ndisasm forgot to check whether the input file had been successfully -opened. Now it does. Doh! - -Added the Cyrix extensions to the MMX instruction set. - -Added a hinting mechanism to allow [EAX+EBX] and [EBX+EAX] to be -assembled differently. This is important since [ESI+EBP] and -[EBP+ESI] have different default base segment registers. - -Added support for the PharLap OMF extension for 4096-byte segment -alignment. - -0.97 released December 1997 ---------------------------- - -This was entirely a bug-fix release to 0.96, which seems to have got -cursed. Silly me. - -Fixed stupid mistake in OBJ which caused `MOV EAX,<constant>' to -fail. Caused by an error in the `MOV EAX,<segment>' support. - -ndisasm hung at EOF when compiled with lcc on Linux because lcc on -Linux somehow breaks feof(). ndisasm now does not rely on feof(). - -A heading in the documentation was missing due to a markup error in -the indexing. Fixed. - -Fixed failure to update all pointers on realloc() within extended- -operand code in parser.c. Was causing wrong behaviour and seg faults -on lines such as `dd 0.0,0.0,0.0,0.0,...' - -Fixed a subtle preprocessor bug whereby invoking one multi-line -macro on the first line of the expansion of another, when the second -had been invoked with a label defined before it, didn't expand the -inner macro. - -Added internal.doc back in to the distribution archives - it was -missing in 0.96 *blush* - -Fixed bug causing 0.96 to be unable to assemble its own test files, -specifically objtest.asm. *blush again* - -Fixed seg-faults and bogus error messages caused by mismatching -%rep and %endrep within multi-line macro definitions. - -Fixed a problem with buffer overrun in OBJ, which was causing -corruption at ends of long PUBDEF records. - -Separated DOS archives into main-program and documentation to reduce -download size. - -0.98 released May 1999 ----------------------- - -Fixed a bug whereby STRUC didn't work at all in RDF. - -Fixed a problem with group specification in PUBDEFs in OBJ. - -Improved ease of adding new output formats. Contribution due to -Fox Cutter. - -Fixed a bug in relocations in the `bin' format: was showing up when -a relocatable reference crossed an 8192-byte boundary in any output -section. - -Fixed a bug in local labels: local-label lookups were inconsistent -between passes one and two if an EQU occurred between the definition -of a global label and the subsequent use of a local label local to -that global. - -Fixed a seg-fault in the preprocessor (again) which happened when -you use a blank line as the first line of a multi-line macro -definition and then defined a label on the same line as a call to -that macro. - -Fixed a stale-pointer bug in the handling of the NASM environment -variable. Thanks to Thomas McWilliams. - -ELF had a hard limit on the number of sections which caused -segfaults when transgressed. Fixed. - -Added ability for ndisasm to read from stdin by using `-' as the -filename. - -ndisasm wasn't outputting the TO keyword. Fixed. - -Fixed error cascade on bogus expression in %if - an error in -evaluation was causing the entire %if to be discarded, thus creating -trouble later when the %else or %endif was encountered. - -Forward reference tracking was instruction-granular not operand- -granular, which was causing 286-specific code to be generated -needlessly on code of the form `shr word [forwardref],1'. Thanks to -Jim Hague for sending a patch. - -All messages now appear on stdout, as sending them to stderr serves -no useful purpose other than to make redirection difficult. - -Fixed the problem with EQUs pointing to an external symbol - this -now generates an error message. - -Allowed multiple size prefixes to an operand, of which only the first -is taken into account. - -Incorporated John Fine's changes, including fixes of a large number -of preprocessor bugs, some small problems in OBJ, and a reworking of -label handling to define labels before their line is assembled, rather -than after. - -Reformatted a lot of the source code to be more readable. Included -'coding.txt' as a guideline for how to format code for contributors. - -Stopped nested %reps causing a panic - they now cause a slightly more -friendly error message instead. - -Fixed floating point constant problems (patch by Pedro Gimeno) - -Fixed the return value of insn_size() not being checked for -1, indicating -an error. - -Incorporated 3D now instructions. - -Fixed the 'mov eax, eax + ebx' bug. - -Fixed the GLOBAL EQU bug in ELF. Released developers release 3. - -Incorporated John Fine's command line parsing changes - -Incorporated David Lindauer's OMF debug support - -Made changes for LCC 4.0 support (__NASM_CDecl__, removed register size -specification warning when sizes agree). - -Released NASM 0.98 Pre-release 1 - -fixed bug in outcoff.c to do with truncating section names longer -than 8 characters, referencing beyond end of string; 0.98 pre-release 2 - -added response file support, improved command line handling, new layout -help screen - -fixed limit checking bug, 'OUT byte nn, reg' bug, and a couple of rdoff -related bugs, updated Wishlist; 0.98 Prerelease 3. - -See the file "MODIFIED" for changes after 0.98p3. |