Tribblix: manual page: yasm

YASM_OBJFMTS(7) Yasm Supported Object Formats YASM_OBJFMTS(7)

NAME

yasm_objfmts - Yasm Supported Object Formats

SYNOPSIS

yasm -f objfmt ...

DESCRIPTION

The standard Yasm distribution includes a number of modules for
different object formats (Yasm's primary output).

The object format is selected on the yasm(1) command line by use of
the -f objfmt command line option.

BIN

The "bin" object format produces a flat-format, non-relocatable
binary file. It is appropriate for producing DOS .COM executables or
things like boot blocks. It supports only 3 sections and those
sections are written in a predefined order to the output file.

COFF

The COFF object format is an older relocatable object format used on
older Unix and compatible systems, and also (more recently) on the
DJGPP development system for DOS.

DBG

The "dbg" object format is not a "real" object format; the output
file it creates simply describes the sequence of calls made to it by
Yasm and the final object and symbol table information in a
human-readable text format (that in a normal object format would get
processed into that object format's particular binary
representation). This object format is not intended for real use, but
rather for debugging Yasm's internals.

ELF

The ELF object format really comes in three flavors: "elf32" (for
32-bit targets), "elf64" (for 64-bit targets and "elfx32" (for x32
targets). ELF is a standard object format in common use on modern
Unix and compatible systems (e.g. Linux, FreeBSD). ELF has complex
support for relocatable and shared objects.

MACHO

The Mach-O object format really comes in two flavors: "macho32" (for
32-bit targets) and "macho64" (for 64-bit targets). Mach-O is used as
the object format on MacOS X. As Yasm currently only supports x86 and
AMD64 instruction sets, it can only generate Mach-O objects for
Intel-based Macs.

RDF

The RDOFF2 object format is a simple multi-section format originally
designed for NASM. It supports segment references but not WRT
references. It was designed primarily for simplicity and has
minimalistic headers for ease of loading and linking. A complete
toolchain (linker, librarian, and loader) is distributed with NASM.

WIN32
The Win32 object format produces object files compatible with
Microsoft compilers (such as Visual C++) that target the 32-bit x86
Windows platform. The object format itself is an extended version of
COFF.

WIN64
The Win64 object format produces object files compatible with
Microsoft compilers that target the 64-bit "x64" Windows platform.
This format is very similar to the win32 object format, but produces
64-bit objects.

XDF

The XDF object format is essentially a simplified version of COFF.
It's a multi-section relocatable format that supports 64-bit physical
and virtual addresses.

AUTHOR

Peter Johnson <peter@tortall.net>
Author.