Yasm is a complete rewrite of the NASM assembler. It currently supports the x86 and AMD64 instruction sets, accepts NASM and GAS assembler syntaxes, outputs binary, ELF32, ELF64, COFF, Mach-O (32 and 64), RDOFF2, Win32, and Win64 object formats, and generates source debugging information in STABS, DWARF 2, and CodeView 8 formats. License: BSD License (revised) Changes:
This release adds 64-bit Mach-O PIC support, --prefix and --suffix options for naming globals, and support for newly specified AVX/AES instructions not in the original spec. It also generates a GOTPCREL relocation for "rel wrt ..gotpc" and optimizes non-strict push to byte size in all possible cases, along with several other fixes.