| AArch64 | |
| ppc64le | |
| s390x | |
| x86-64 |
- Update to 3.02:
* Fix build problems on C23 compilers using a pre-C23 version of <stdbool.h>
which defines bool as a macro in violation of the C23 specification.
* The immediate form of the JMPE instruction (opcode 0F B8) has been changed
to an absolute address, as in the Itanium Architecture Software Developer's
Manual, version 2.3, Volume 4, page 4:249. Hopefully this won't break
whatever virtual environments use JMPE, but it is the closest thing there
is to an official specification for this opcode.
* Being an absolute address, treat it equivalent to a FAR jump and do not
default to 64 bits in 64-bit mode.
* That JMPE has apparently been wrong all these years is probably as good of
a hint as any how much it has been actually used, but it does have the
possibility of breaking virtual environments. In that case, please file a
bug report to https://bugs.nasm.us with details about the virtual
environment, and we will figure out a suitable solution.
* Various build fixes. Fix the documentation not building on MacOS because of
the cp utility lacking -u there. Also fix not building generally due to
wrong link formatting. Another fix was a typo in compiler.h related to a
C++ check.
* Corrections to assembling encodings:
+ Fix CMP allowing LOCK which is illegal.
+ Correct multiple AVX512 instructions such as VCVTSD2SI, VCVTSD2USI,
VCVTSS2SI, VCVTSS2USI, VCVTTSD2SI, VCVTTSD2USI, VCVTTSS2SI, VCVTTSS2USI,
VGETEXPSH, VGETMANTSH, MOVDDUP, VMOVDDUP.
+ Fixed other encodings or instruction formats for instructions UWRMSR,
CMPSD, VCMPSS, V4FMADDSS, V4FNMADDSS, VCVTDQ2PH, VCVTPD2PH, VCVTPH2UDQ,
VCVTQQ2PH, VCVTUDQ2PH, VCVTUQQ2PH, VGETEXPSH, VGETMANTSH, VRCPPH,
VRSQRTPH, VCVTPH2BF8, VCVTPH2BF8S, VCVTPH2HF8, VCVTPH2HF8S.
+ Fixed typos in VP4DPWSSD mnemonic.
+ Fixed BYTE and WORD operands getting the same encoding on arithmetic
instructions such as CMP.
+ Fixed PUSH not assembling when used with a DWORD in 64-bit mode. This is
not a recommended syntax as the operand size is still 64 bits, but was
permitted by earlier versions of NASM.
+ Fix parsing of $–escaped symbols in directives (GLOBAL, STATIC, EXTERN,
REQUIRED, COMMON).
* Corrections to disassembling:
+ Shift instructions with the unity operand were getting disassembled to a
zero operand instead of one.
+ JMP, CALL and JMPE disassembled incorrectly with the register operands.
* Whole bunch of minor fixes to operand sizes, operand size prefixes. Changes
mostly return the behavior known from 2.16.03.
* MOV [mem], label would be accepted without size specifiers which could
cause unintended consequences. Raise an error if no size was specified and
one of the operands is a memory reference and another operands is a label.
* JMP NEAR is now the same as JMP STRICT NEAR as the STRICT is redundant
here. JMP WORD on the other hand is up for optimization as NEAR and WORD
relate to different things – jump lengths and operation sizes respectively.
* Using redundant (or not) but valid operands size prefixes was fixed on
instructions such as IRET, PUSHF, POPF, PUSH and POP.
* Using an operand size prefix on a JMP or CALL instruction could generate an
invalid instruction. This appears to have been a long-standing bug.
Specifying the operand size by specifying the size of the immediate
explicitly (e.g. JMP DWORD label) has always worked correctly, however.
* Add support for C2y-style \o escape sequences, braced escape sequences, and
as NASM extensions, decimal escape sequences (\d) and control-character
escape sequences (\^). See section 3.4.2.
* Fix generation of the short opcodes for ADD, OR, ADC, SBB, AND, SUB, XOR, and CMP AL,imm8.
* Fix truncation of the generated constant to 63 bits when invoking a
single-line macro when an argument is defined as =/b or =/ub.
* Add an %env() preprocessor function as a more robust and flexible
alternative to the %! construct. See section 5.5.7.
* The maximum number of multi-line macro parameters is now a configurable
limit. See section 2.1.32.
* The --limit- options and %pragma limit now accept the keywords default,
maximum, and reset. See section 2.1.32.
* Fix parsing of seg:offs–style FAR pointers in EQU.
* Fix the %clear preprocessor directive hanging when given parameters.
* The never properly implemented (or documented) preprocessor directives
%rmacro and %irmacro are now properly disabled; to avoid breaking existing
code, they fall back to %macro and %imacro with a suitable warning.
Programmers should not rely on this behavior: in the future, these
directives might actually be (properly) implemented.
* Fix a crash when -M directives were used in response files. (CVE-2026-6068) (bsc#1261985)
* New listing option -Lc to include the contents of INCBIN files, see section 2.1.4.
* New listing option -Lt to include the output from every iteration of TIMES
and ALIGN directives, see section 2.1.4.
* The %pragma list options directive now support resetting options to their
command-line default, see section 2.1.4.
* New predefined macros __?LIST_OPTIONS?__ and __?LIST_OPTIONS_DEFAULT?__ to
query the active and command-line default listing options. See section 2.1.4.
- CVE-2026-6067: heap buffer overflow vulnerability due to a lack of bounds checking in the obj_directive (bsc#1261986)
Add nasm-CVE-2026-6067.patch
- Update to 3.01:
* A new obj2 version of the obj output format, intended for use on OS/2. See section 9.5.
* The condition after %if or %elif would be evaluated while output is suppressed
after %exitrep or %exitmacro. Although no output would be generated in either case,
assembly would fail if evaluating the expression triggered an error.
* Fix encoding of TCVTROWPS2PHL, correct multiple AVX512-BF16 instructions' operand
formats and typoed mnemonics.
* The unofficial but obvious alternate form TEST reg,mem was not accepted by NASM 3.00;
corrected.
* For the obj output format, multiple GROUP directives can now be specified for the same
group; the resulting group includes all sections specified in all GROUP directives for
the group.
* A new %selbits() preprocessor function. See section 5.4.19.
* A new --bits option as convenience shorthand for --before "BITS ...". See section 2.1.31.
* The options and pragmas for configuring external label mangling were inconsistent, the
former using the spelling postfix and the latter suffix. Furthermore, these were also
documented as directives in addition to pragmas. Implement the already documented
directives (bracketed forms only) and allow both postfix and suffix in all cases.
See section 2.1.28 and section 8.10.
* Define additional permissive patterns and fix several opcode bugs.
* Fix parsing of two-operand forms of x87 instructions.
* Fix bogus "absolute address can not be RIP-relative" warning.
* Hopefully fix building with OpenWatcom.
* Generate a warning, promoted to error by default, on the use of o64 prefixes in
16- or 32-bit mode. If demoted to a warning or suppressed the prefix is ignored, but
likely will trigger subsequent, harder to debug, error messages.
* More consistent handling of jump and call instructions with specified operand sizes.
* Fix an operand size handling bug in the CMPXCHG instruction.
- Update to 3.00:
* Improve the documentation for building from source (appendix D).
* Add support for the APX and AVX10 instruction sets, and various miscellaneous new instructions.
* Add new preprocessor functions: %b2hs(), %chr(), %depend(), %find(),
%findi(), %hs2b(), %null(), %ord(), %pathsearch(), and %realpath(). See section 5.4.
* New preprocessor directive %note to insert a note in the list file,
without issuing an external diagnosic. Unlike a comment, it is optionally
macro-expanded, see section 5.11.
* New preprocessor directive %iffile (and corresponding function %isfile()) to
test for the existence of a file. See section 5.6.12.
* New preprocessor directive %ifdirective to test for the existence of a
preprocessor directive, assembly directive, or pseudo-instruction; see section 5.6.10.
* Fix a number of invalid memory references (usually causing crashes) on various invalid inputs.
* Fix multiple bugs in the handling of $–escaped symbols.
* The use of $ as a prefix for hexadecimal numbers has been deprecated,
and will now issue a warning. A new directive [DOLLARHEX] can be used to disable
this syntax entirely, see section 8.12.
* Fix the generation of segment selector references (mainly used in the obj output format.)
* Fix crash in the obj backend when code was emitted into the default segment,
without any labels having been defined.
* Clean up the command-line help text (-h) and break it down into individual
topics, as the previous output was just too verbose to be practical as a quick reference.
* The implicit DEFAULT ABS in 64-bit mode is deprecated and may be changed to REL
in the future. See section 8.2. A warning is now emitted for this condition.
* It is now possible to set the REL/ABS default for memory accesses using FS: or GS:,
see section 8.2.
* The __?DEFAULT?__ standard macro now reflects the settings of the DEFAULT directive.
See section 6.4.
* The NASM preprocessor now assumes that an unknown directive starting with %if or %elif
is a misspelled or not yet implemented conditional directive, and tries to match it
with a corresponding %endif. See section 5.6.14.
* The masm macro package now defines a macro for x87 register syntax. See section 7.5.
* A new macro package, vtern, to simplify generation of the control immediates for
the VPTERNLOGD and VPTERNLOGQ instructions. See section 7.6.
* A new command line option -LF allows overriding [LIST -] directives.
* In the obj output format, allow a segment in the FLAT pseudo-group to also belong to
another (real) group. Used on OS/2.
* Add a new build_version directive to the Mach-O backend. See section 9.8.6.
* Fix a spec violation in the generation of DWARF debugging information on ELF.
* Response files can now be nested.
* Many documentation improvements.
- Update to 2.16.03:
* Fix building from git in a separate directory from the source.
* Remove some irrelevant files from the source distribution.
* Make the documentation stronger that -O0 or -O1 are probably
not what the user wants. See section 2.1.24.
* Fix configure --enable-lto build option.
* Update the included RPM .spec file.
- Update to 2.16.02:
* Fix building from the source distribution in a separate directory
from the source.
* Fix a number of issues when building from source, mostly
involving configure or dependency generation.
In particular, more aggressively avoid cross-compilation problems
on Unix/Linux systems automatically invoking WINE. We could end
up invoking WINE even when we didn't want to, making configure
think it was running native when in fact cross-compiling.
* Hopefully fix compiling with the latest versions of MSVC/nmake.
* Windows host: add embedded manifest file. Without a manifest,
Windows applications force a fixed PATH_MAX limit to any
pathname; this is unnecessary.
* Add support VEX-encoded SM4-NI instructions.
* Add support for VEX-encoded SM3-NI instructions.
* Add support for VEX-encoded SHA512-NI instructions.
* PTWRITE opcode corrected (F3 prefix required.)
* Disassembler: the SMAP instructions are NP; notably the prefixed
versions of CLAC are ERETU/ERETS.
* Add support for Flexible Return and Exception Delivery (FRED):
the LKGS, ERETS and ERETU instructions.
* Fix external references to segments in the obj (OMF) and
possibly other output formats.
* Always support up to 8 characters, i.e. 64 bits, in a
string-to-numeric conversion.
* Preprocessor: add %map() function to expand a macro from
a list of arguments, see section 4.4.7.
* Preprocessor: allow the user to specify the desired radix
for an evaluated parameter. It doesn't make any direct difference,
but can be nice for debugging or turning into strings.
See the = modifier in section 4.2.1.
* Update documentation: __USE_package__ is now __?USE_package?__.
* Documentation: correct a minor problem in the expression
grammar for Dx statements, see section 3.2.1.
* Preprocessor: correctly handle empty %rep blocks.
* Preprocessor: add options for a base prefix to %num(), see section 4.4.8.
* Preprocessor: add a %hex() function, equivalent to %eval()
except that it producess hexadecimal values that are nevertheless
valid NASM numeric constants, see section 4.4.5.
* Preprocessor: fix the parameter number in error messages (should be 1-based,
like %num references to multi-line macro arguments.)
* Documentation: be more clear than the bin format is simply a linker built
into NASM. See section 8.1.
* Adjust the LOCK prefix warning for XCHG.
LOCK XCHG reg,mem would issue a warning for being unlockable, which is
incorrect. In this case the reg,mem encoding is simply an alias for
the mem,reg encoding. However, XCHG is always locked, so create a new
warning (-w+prefix-lock-xchg) to explicitly flag a user-specified LOCK XCHG;
default off. Future versions of NASM may remove the LOCK prefix when
optimization is enabled.
* Fix broken dependency-list generation.
* Add optional warnings for specific relocation types (-w+reloc-*,
see appendix A), default off.
* Some target environments may have specific restrictions on what
kinds of relocations are possible or allowed.
* Error out on certain bad syntax in Dx statements, such as
db 1 2. See section 3.2.1.
- Update to 2.16.01:
* Fix the creation of the table of contents in the HTML version
of the documentation.
- Update to 2.16:
* Support for the rdf format has been discontinued and all the
RDOFF utilities has been removed.
* The --reproducible option now leaves the filename field in the
COFF object format blank. This was always rather useless since it is
only 18 characters long; as such debug formats have to carry their own
filename information anyway.
* Fix handling of MASM-syntax reserved memory (e.g. dw ?) when
used in structure definitions.
* The preprocessor now supports functions, which can be less verbose
and more convenient than the equivalent code implemented using
directives. See ppfunc.
* Fix the handling of %00 in the preprocessor.
* Fix incorrect handling of path names affecting error messages,
dependency generation, and debug format output.
* Support for the RDOFF output format and the RDOFF tools have been
removed. The RDOFF tools had already been broken since at least NASM
2.14. For flat code the ELF output format recommended; for segmented
code the obj (OMF) output format.
* New facility: preprocessor functions. Preprocessor functions, which
are expanded similarly to single-line macros, can greatly simplify
code that in the past would have required a lengthy list of directives
and intermediate macros. See ppfunc.
* Single-line macros can now declare parameters (using a &&
prefix) that creates a quoted string, but does not requote an
already quoted string. See define.
* Instruction table updated per public information available as of
November 2022.
* All warnings in the preprocessor have now been assigned warning
classes. See warnings.
* Fix the invalid use of RELA-type relocations instead of
REL-type relocations when generating DWARF debug information for
the elf32 output format.
* Fix the handling at in istruc when the structure contains
local labels. See istruc.
* When assembling with --reproducible, don't encode the filename
in the COFF header for the coff}, win32 or win64 output
formats. The COFF header only has space for an 18-character filename,
which makes this field rather useless in the first place. Debug output
data, if enabled, is not affected.
* Fix incorrect size calculation when using MASM syntax for non-byte
reservations (e.g. dw ?.)
* Allow forcing an instruction in 64-bit mode to have a (possibly
redundant) REX prefix, using the syntax rex as a prefix.
* Add a vex prefix to enforce VEX (AVX) encoding of an
instruction, either using the 2- or 3-byte VEX prefixes.
* The CPU directive has been augmented to allow control of
generation of VEX (AVX) versus EVEX (AVX-512) instruction formats, see
CPU.
* Some recent instructions that previously have been only available
using EVEX encodings are now also encodable using VEX (AVX)
encodings. For backwards compatibility these encodings are not enabled
by default, but can be generated either via an explicit vex
prefix or by specifying either CPU LATEVEX or CPU NOEVEX; see
CPU.
* Document the already existing unimacro directive. See unmacro.
* Fix a code range generation bug in the DWARF debug format
(incorrect information in the DW_AT_high_pc field) for the ELF
output formats. This bug happened to cancel out with a bug in older
versions of the GNU binutils linker, but breaks with other linkers and
updated or other linkers that expect the spec to be followed.
* Fix segment symbols with addends, e.g. jmp _TEXT+10h:0 in
output formats that support segment relocations, e.g. the obj
format.
* Fix various crashes and hangs on invalid input
- add reproducible.patch to avoid use of __DATE__
- Update to version 2.15.05:
+ Fix {%ifid $} and {%ifid $$} incorrectly being treated as true.
+ Add {--reproducible} option to suppress NASM version numbers
and timestamps in output files. See {opt-reproducible}.
- update to 2.15.4:
* More sensible handling of the case where one single-line macro
definition will shadow another.
* Add special preprocessor tokens \c{%*?} and \c{%*??} that expand
like \c{%?} and \c{%??} in single-line macros only. See
\k{selfref%*?}.
* Fix SSE instructions not being recognized with an explicit memory
operation size (e.g. \c{movsd qword [eax],xmm0}).
* The \c{-L+} option no longer enables \c{-Lw}, which is mainly
useful to debug NASM crashes. See \k{opt-L}.
* The NASM-only RDOFF output format backend, which has been broken
since at least NASM 2.14, has been disabled. The RDOFF tools are
scheduled to be removed from the NASM distribution in NASM 2.16. If
you have a concrete use case for RDOFF, please file a NASM bug report
at \W{https://bugs.nasm.us/}\c{https://bugs.nasm.us/} as soon as
possible. See \k{rdffmt}.
- nasm 2.15.3:
* Add instructions from the Intel Instruction Set Extensions and
Future Features Programming Reference, June 2020. This includes
AVX5512 bfloat16, AVX512 mask intersect, and Intel Advanced
Matrix Extensions (AMX).
* Support for bfloat16 floating-point constants
* various bug fixes
- update to 2.15.2:
* Fix the handling of macro parameter ranges (%{:}), including
with brace-enclosed original arguments
- includes changes from 2.15.01:
* Add instructions for Intel Control Flow Enforcement Technology
- includes changes from 2.15:
* The comparison and booleanizing operators can now be used in
any expression context, not just %if
* New operator ? ... :.
* Signed shift operators <<< and >>>
* The MASM DUP syntax for data definitions is now supported,
in a somewhat enhanced form
* Warn for strange legacy behavior regarding empty arguments in
multi-line macro expansion, but try to match legacy behavior in
most cases. Legacy behavior can be disabled with the directive
%pragma preproc sane_empty_expansion
* A much more sensible limit to expression evaluation depth.
The previously defined limit would rarely trigger before NASM
died with a stack overrun error on most systems
* The state of warnings can now be saved and restored via the
[WARNING PUSH] and [WARNING POP] directives
* The sectalign on|off switch does not affect an explicit directive
* Fixed 'mismatch in operand sizes' error in the MOVDDUP,
CMPXCHG8B and CMPXCHG16B instructions.
* Removed obsolete gnu-elf-extensions warning about 8- and 16-bit
relocation generation
* Added group aliases for all prefixed warnings
* Added implicitly sized versions of the K... instructions,
which allows the K... instructions to be specified without a
size suffix as long as the operands are sized
* Added -L option for additional listing information
* Added some warnings for obsolete instructions for a specified CPU.
* Deprecated -hf and -y options. Use -h instead
* Made DWARF as the default debug format for ELF
* Added %pragma list options... to set or clear listing options
* Allowed immediate syntax for LEA instruction (ignore operand
size completely)
* Added limited functionality MASM compatibility package
* Add single-line macros aliases using %defalias or %idefalias.
These behave like a kind of "symbolic links" for single-line
macros
* Added support for stringify, nostrip, evaluating, and greedy
single-line macro arguments
* Unused single-line macro arguments no longer need to have a
specified name
* Added conditional comma operator %,
* Changed private namespace from __foo__ to __?foo?__, so a user
namespace starting from underscore is now clean from symbols.
For backwards compatibility, the previous names are defined as
aliases
* Added support of ELF weak symbols and external references
* Changed the behavior of the EXTERN keyword and introduced
REQUIRED keyword
* Added %ifusable and %ifusing directives
* Made various performance improvements and stability fixes in
macro preprocessor engine
* Improved NASM error handling and cleaned up error messages
- includes changes from 2.14.03:
* Suppress nuisance "label changed during code generation"
messages after a real error
* Add support for the merge and strings attributes on ELF sections
* Add support for the note, preinit_array, init_array, and
fini_array sections type in ELF
* Handle more than 32,633 sections in ELF
- Convert changes file to proper UTF-8 format: new version of RPM are getting strict in interpreting files.