Log message:
nasm: updated to 3.0.2
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.
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.
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Log message:
devel/nasm: Update to 3.01
Changelog:
Version 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.
Version 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 9.9.6.
* Fix a spec violation in the generation of DWARF debugging information on
ELF.
* Response files can now be nested.
* Many documentation improvements.
Version 2.16.03
This is a source build machinery and documentation update only. There are no
functionality changes.
* 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.
Version 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 5.4.12.
* 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 5.2.1.
* 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 5.4.14.
* Preprocessor: add a %hex() function, equivalent to %eval() except that it
producess hexadecimal values that are nevertheless valid NASM numeric
constants, see section 5.4.9.
* 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 9.1.
* 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.
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