Implement the %cond() and %sel() functions that expand to a specific
one of the arguments. %cond(x,y,z) is basically a shorthand for
%sel(2-!(x),y,z) used when x is a boolean condition.
Fix a memory leak in %strcat and %strlen.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
In some of the preprocessor function examples, actually enforce
equivalence by using %xdefine in the function examples so the
expansion is at definition time.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Allow preprocessor function expansion to recurse. Nearly all the
machinery for recursive smacros was already in place; this merely
activates it for the specific case of preprocessor functions. Making
it a general facility should be deferred to a later relese, though.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Additional nonvector instructions from the Intel Instruction Set
Extensions document 319433-046 September 2022.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Instead of handling conditional instructions ad hoc, generate
individual instruction patterns as normal. This simplifies the code
and makes CMPccXADD support simpler (otherwise it would be necessary
to hack in the handling of a condition code in the middle of an
instruction.)
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Some preprocessor functions have the same name as directives. In those
cases, they should be expanded as functions if and only if they are
followed by a left parenthesis. Although it is not inherently true that
either preprocessor functions require a paren nor that directives
cannot start with one, but it is true and will remain true for all
cases where there is a namespace collision.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
%substr contained a token skip to "skip expanded ID", which is
incorrect, as that has already been skipped at that point. It worked
anyway, accidentally, as this token would always be a whitespace token
-- but we then do skip_white() immediately thereafter.
Delete this to allow this code to be factored.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
The use of statements like "chapter", "section" and so on makes the
HTML index insanely verbose. Remove them; they don't add any
information.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Allow a single index entry key to be defined with \IR more than once,
generating multiple entries in the index; this is really useful for
example to always generate "macros, single-line" and "single-line
macros" entries sorted at different places.
Be smarter about sorting the index: sort (nearly) all special
characters before alphanumerics, and (attempt to) sort numbers in
numerical order rather than alphabetical (so BITS8 sorts before
BITS16).
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
The web site currently assumes that the release history is always in
appendix C. Humor it for now, besides, it doesn't really make sense
for the huge machine-generated instruction list to be anywhere but the
end.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
If a list of index entries is so long that the whole list can't fit
onto a single page, we *have* to break it. Treat the hanging-comma
line as a potential widow, but allow column breaks elsewhere in the
list.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
RDOFF has been deprecated as it has unfixable problems, and has been
announced that it will be killed off in NASM 2.16.
This deletes it once and for all.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit adds a check to see if the macro that we want to unmacro exists.
A previous commit, introduced a check to see if the unmacro was undefining a macro being expanded, but that same check included a null pointer dereference if the macro to undefine did not exist.
The following code reproduced the issue:
```asm
%macro baz 0
%unmacro F 0
%endmacro
baz
```
Compile with:
```shell
$ nasm -f elf64 -g -FDWARF -o tmp.o -werror file.asm
```
[hpa: adjusted code to match NASM style]
Fixes bug 3392761
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
The FP16 patch had a case of bit overlap. Clean up the handling of
broadcast flags a little in the process.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This reverts commit 8fcc785f95.
This patch causes test a32offs.asm, and in general *any* use of the
"bits" macro, to totally fail.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
case PP_ENDM:
case PP_ENDMACRO:
if (!(defining && defining->name)) {
nasm_nonfatal("`%s': not defining a macro", tok_text(tline));
goto done;
}
mmhead = (MMacro **) hash_findi_add(&mmacros, defining->name);
defining->next = *mmhead;
*mmhead = defining;
defining = NULL;
break;
The variable: mmacros has not been released, which will cause a memory
leak. Repair cve-2021-33450 cve-2021-33452 synchronously
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Add support for AVX512-FP16 instructions and the associated
handling. Allow "mapN" syntax as well as "mN" syntax to match the
documentation.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
free() and nasm_free() are required to be compatible (as we may end up
having memory allocated on the heap by the C library), but that
doesn't mean we shouldn't use it whereever possible to allow for
better debugging.
Fixes: https://bugzilla.nasm.us/show_bug.cgi?id=3392804
Reported-by: C. Masloch <pushbx@ulukai.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
