NASM is an 80x86 assembler designed for portability and modularity. It supports a range of object file formats including Linux a.out and ELF, COFF, Microsoft 16-bit OBJ, Win32/64, and Apple Mach-O. It will also output plain binary files. Its syntax is designed to be simple and easy to understand, similar to Intel's but less complex. It supports all currently known opcodes, and has advanced macro capability. It includes a disassembler as well.
| Tags | Software Development Compilers |
|---|---|
| Licenses | LGPL |
| Operating Systems | POSIX OS/2 Windows Windows MS-DOS Mac OS X OS Independent |
| Implementation | C |
Recent releases


Changes: This release adds support for Intel AVX revision 5 and AMD XOP/FMA4/CVT16 revision 3.03. The preprocessor has a new indirect macro expansion feature, the ELF backends now supports thread-local storage, and a number of bugs have been fixed.


Changes: This release fixes the parsing of the -W/-w (warning enable/disable) option, which was broken in 2.05. It is strictly a patch release.


Changes: This release includes a massive overhaul of the ELF64 backend for spec compliance. It fixes incorrect offsets in RIP-relative addressing in immediate-carrying instructions, bugs in the ALIGN directive, the handling of the %include directive inside macros, and a handful of instructions that had incorrect patterns.


Changes: This is primarily a bugfix release. In particular, it should end once and for all abnormalities introduced by forward references when pass-limited. It does introduce some new features, mostly in the preprocessor. It adds support for packed BCD and UTF-16/UTF-32 constants. It also adds support for "smart" alignment, padding the bypassed region with optimized code.


Changes: This release fixes a (limited impact) buffer overflow, and fixes the handling of hexadecimal escape codes in strings.
Software that fools a program into thinking it is running as root.
- All comments
Recent commentsRe: Project in bit of limbo, or web site at least.
The current web site is as given, http://nasm.2y.net (http://nasm.2y.net/), or look at the project page on SourceForge, http://www.sourceforge.net/projects/nasm/ (http://www.sourceforge.net/projects/nasm/).
Project in bit of limbo, or web site at least.
There seems to be two web sites for this project,
http://www.octium.net/nasm/
And
http://nasm.2y.net
It seems that the 2y.net address is the new one, but it seems to be hosted on someones cablemodem(From the speed). Note for people who need nasm for lame and gogo, The only version that worked for me was the 0.89bf version, to which there is only a zip file that you have do some work on. It stores all filenames as 8.3 and messes with the cases.
If my info is wrong, someone please correct me.
Josh