ld86
(1)
名前
ld86 - Linker for as86(1)
形式
ld86 [-03MNdimrstyz[-]] [-llib_extension] [-o outfile]
[-Ccrtfile] [-Llibdir] [-Olibfile] [-Ttextaddr] [-Hheapsize]
[-Ddataaddr] infile...
説明
User Commands ld86(1)
NAME
ld86 - Linker for as86(1)
SYNOPSIS
ld86 [-03MNdimrstyz[-]] [-llib_extension] [-o outfile]
[-Ccrtfile] [-Llibdir] [-Olibfile] [-Ttextaddr] [-Hheapsize]
[-Ddataaddr] infile...
DESCRIPTION
This linker understands only the object files produced by
the as86 assembler, it can link them into either an impure
or a separate I&D executable.
The linking defaults are everything off or none except for
-0 and the output file is a.out. There is not a standard
library location defined in the linker.
OPTIONS
-0 produce header with 16-bit magic
-3 produce header with 32-bit magic
-d delete the header from the output file, used for MSDOS
COM files. As a side effect this also includes -s as
there's nowhere to put a symbol table.
-Cx add file libdir-from-search/crtx.o to list of files
linked
-D data base address follows (in format suitable for
strtoul)
-H the top of heap (initial stack) address (in format
suitable for strtoul)
-Lx add dir name x to the head of the list of library dirs
searched
-M print symbols linked on stdout
-N Create a native Linux OMAGIC output file. If the
contents are i386 code the binary can be either linked
by GCC or executed by linux. If the -z option is also
included the linker can generate a QMAGIC executable.
-Ox add library or object file libdir-from-search/x to list
of files linked
-T text base address follows (in format suitable for
strtoul)
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User Commands ld86(1)
-i separate I&D output
-lx add library libdir-from-search/libx.a to list of files
linked
-m print modules linked on stdout
-o output file name follows
-s strip symbols
-r Generate a relocatable object from one source object,
if the linker is given the -N option also the output
format will be the hosts native format if possible.
-t trace modules being looked at on stdout
-y Alter the symbol tables to add label 'extensions' so
that labels with more than 8 characters can be stored
in elks executables.
-z produce "unmapped zero page" or "QMAGIC" executables
All the options not taking an argument may be turned off by
following the option letter by a '-', as for cc1.
PREDEFINED LABELS
The linker predefines several labels that can be imported
into user programs.
__etext
Standard C variable for the end of the text segment.
__edata
Standard C variable for the end of the initilised data.
__end
Standard C variable for the end of the bss area.
__segoff
The offset within the executable file between the start
of the text segment and the start of the data segment
in 16 byte 'paragraphs'. Note this is zero for impure
(tiny model) executables and is adjusted for
executables that don't start at offset 0 within the
segment.
__segXDL
The lowest address with data in segment 'X'. (eg
__seg0DL is for segment zero or the text segment,
__seg3DL is for the data segment) The value 'X' is a
hex digit.
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User Commands ld86(1)
__segXDH
The top of segment 'X's data area.
__segXCL
The bottom of segment 'X's 'common data' or unitilised
data area. Each segment has both an initilised and
unitilised data area.
__segXCH
The top of segment 'X's common area.
__segXSO
This is the adjusted offset from segment 0 of the start
of segment 'X' in 'paragraphs'.
HISTORY
The 6809 version does not support -i.
The previous versions of the linker could produce an 8086
executable with segments of a size >64k, now only i386
executables may have segments this large.
BUGS
The linker cannot deal with reverse seeks caused by org
instructions in the object file. Unlike previous versions
the current one traps the error rather than trying to fill
up the hard disk.
The linker produces a broken a.out object file if given one
input and the -r option this is so it is compatible with
pre-dev86 versions.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | developer/bcc |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://homepage.ntlworld.com/robert.debath/dev86/Dev86src-0.16.17.tar.gz
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User Commands ld86(1)
Further information about this software can be found on the
open source community website at
http://homepage.ntlworld.com/robert.debath/dev86/.
SunOS 5.11 Last change: Apr, 1997 4