nasm/Changes
H. Peter Anvin d7ed89eac9 NASM 0.94
2002-04-30 20:52:08 +00:00

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Change log for NASM
===================
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
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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
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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 not released yet
---------------------
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.
Updates to RDOFF subdirectory, and changes to outrdf.c.