Manual page for ATOM(1)
atom - a.out to Mach-O object file converter
SYNOPSIS
atom
[ option ] a.out Mach-O
DESCRIPTION
Atom
converts the specified 4.3BSD a.out format object file to a Mach-O (Mach object)
format file. Only ZMAGIC and OMAGIC a.out formats can be converted. ZMAGIC
formats are converted to the Mach-O demand paged executable file type
(MH_EXECUTE). OMAGIC formats are converted to the Mach-O relocatable file type
(MH_OBJECT). The conversion involves adding a Mach-O header and load commands
to the file, changing the types of symbol table entries, changing the symbolnum
of local relocation entries, and converting symbol segments.
There are currently three options to
atom(1):
- -segcreate seg sect file
-
Create a section,
sect,
in the segment,
seg,
that contains the contents of
file.
The resulting section size is rounded to a multiple of 4 bytes and the resulting
segment is rounded to a multiple of the page size (8192 bytes). More than
one section can be created in the same segment.
This is the same as the
ld.1
-segcreate option.
- -objc
-
Create the Objective-C sections for relocatable object files (OMAGIC files).
This has a known bug in converting the local relocation entries. If a local
relocation entry's item to be relocated is a symbol's value plus an offset it
can be converted to be relative to the wrong section if the value of the
expression is not in the same section as the value of the symbol. This can't
be fixed because object files lack the information of what symbol's value make
up the expression. This is done correctly in the assembler when the file is
assembled and a Mach-O file is created.
- -gg
-
Copy the symsegs created by the
obsolete -gg
option of
cc.1
into the output. Symsegs are obsolete, and this is not the default.
SEE ALSO
ld(1), otool(1)
Created by unroff & hp-tools.
© somebody (See intro for details). All Rights Reserved.
Last modified 11/5/97
