Mercurial > hg-old > index.cgi
changeset 137:8e69528eef91
Moved old tags and branches for lwlink to global tags/branches dirs
| author | lost |
|---|---|
| date | Wed, 28 Jan 2009 05:54:43 +0000 |
| parents | 72d8c84a8734 |
| children | 050864a47b38 |
| files | lwlink/branches/1.0/COPYING lwlink/branches/1.0/INSTALL lwlink/branches/1.0/Makefile.am lwlink/branches/1.0/Makefile.in lwlink/branches/1.0/README lwlink/branches/1.0/README.MAINT lwlink/branches/1.0/aclocal.m4 lwlink/branches/1.0/configure lwlink/branches/1.0/configure.ac lwlink/branches/1.0/depcomp lwlink/branches/1.0/doc/Makefile.am lwlink/branches/1.0/doc/Makefile.in lwlink/branches/1.0/doc/lwlink.txt lwlink/branches/1.0/doc/scripts.txt lwlink/branches/1.0/install-sh lwlink/branches/1.0/missing lwlink/branches/1.0/src/Makefile.am lwlink/branches/1.0/src/Makefile.in lwlink/branches/1.0/src/config.h.in lwlink/branches/1.0/src/expr.c lwlink/branches/1.0/src/expr.h lwlink/branches/1.0/src/link.c lwlink/branches/1.0/src/lwlink.c lwlink/branches/1.0/src/lwlink.h lwlink/branches/1.0/src/main.c lwlink/branches/1.0/src/objdump.c lwlink/branches/1.0/src/output.c lwlink/branches/1.0/src/readfiles.c lwlink/branches/1.0/src/script.c lwlink/branches/1.0/src/util.c lwlink/branches/1.0/src/util.h lwlink/tags/1.0/COPYING lwlink/tags/1.0/INSTALL lwlink/tags/1.0/Makefile.am lwlink/tags/1.0/Makefile.in lwlink/tags/1.0/README lwlink/tags/1.0/README.MAINT lwlink/tags/1.0/aclocal.m4 lwlink/tags/1.0/configure lwlink/tags/1.0/configure.ac lwlink/tags/1.0/depcomp lwlink/tags/1.0/doc/Makefile.am lwlink/tags/1.0/doc/Makefile.in lwlink/tags/1.0/doc/lwlink.txt lwlink/tags/1.0/doc/scripts.txt lwlink/tags/1.0/install-sh lwlink/tags/1.0/missing lwlink/tags/1.0/src/Makefile.am lwlink/tags/1.0/src/Makefile.in lwlink/tags/1.0/src/config.h.in lwlink/tags/1.0/src/expr.c lwlink/tags/1.0/src/expr.h lwlink/tags/1.0/src/link.c lwlink/tags/1.0/src/lwlink.c lwlink/tags/1.0/src/lwlink.h lwlink/tags/1.0/src/main.c lwlink/tags/1.0/src/objdump.c lwlink/tags/1.0/src/output.c lwlink/tags/1.0/src/readfiles.c lwlink/tags/1.0/src/script.c lwlink/tags/1.0/src/util.c lwlink/tags/1.0/src/util.h |
| diffstat | 62 files changed, 0 insertions(+), 23042 deletions(-) [+] |
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--- a/lwlink/branches/1.0/COPYING Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,674 +0,0 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 - - Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. By contrast, -the GNU General Public License is intended to guarantee your freedom to -share and change all versions of a program--to make sure it remains free -software for all its users. We, the Free Software Foundation, use the -GNU General Public License for most of our software; it applies also to -any other work released this way by its authors. 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Interpretation of Sections 15 and 16. - - If the disclaimer of warranty and limitation of liability provided -above cannot be given local legal effect according to their terms, -reviewing courts shall apply local law that most closely approximates -an absolute waiver of all civil liability in connection with the -Program, unless a warranty or assumption of liability accompanies a -copy of the Program in return for a fee. - - END OF TERMS AND CONDITIONS - - How to Apply These Terms to Your New Programs - - If you develop a new program, and you want it to be of the greatest -possible use to the public, the best way to achieve this is to make it -free software which everyone can redistribute and change under these terms. - - To do so, attach the following notices to the program. It is safest -to attach them to the start of each source file to most effectively -state the exclusion of warranty; and each file should have at least -the "copyright" line and a pointer to where the full notice is found. - - <one line to give the program's name and a brief idea of what it does.> - Copyright (C) <year> <name of author> - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. - -Also add information on how to contact you by electronic and paper mail. - - If the program does terminal interaction, make it output a short -notice like this when it starts in an interactive mode: - - <program> Copyright (C) <year> <name of author> - This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, your program's commands -might be different; for a GUI interface, you would use an "about box". - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU GPL, see -<http://www.gnu.org/licenses/>. - - The GNU General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -<http://www.gnu.org/philosophy/why-not-lgpl.html>.
--- a/lwlink/branches/1.0/INSTALL Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,237 +0,0 @@ -Installation Instructions -************************* - -Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005, -2006, 2007 Free Software Foundation, Inc. - -This file is free documentation; the Free Software Foundation gives -unlimited permission to copy, distribute and modify it. - -Basic Installation -================== - -Briefly, the shell commands `./configure; make; make install' should -configure, build, and install this package. The following -more-detailed instructions are generic; see the `README' file for -instructions specific to this package. - - The `configure' shell script attempts to guess correct values for -various system-dependent variables used during compilation. It uses -those values to create a `Makefile' in each directory of the package. -It may also create one or more `.h' files containing system-dependent -definitions. Finally, it creates a shell script `config.status' that -you can run in the future to recreate the current configuration, and a -file `config.log' containing compiler output (useful mainly for -debugging `configure'). - - It can also use an optional file (typically called `config.cache' -and enabled with `--cache-file=config.cache' or simply `-C') that saves -the results of its tests to speed up reconfiguring. Caching is -disabled by default to prevent problems with accidental use of stale -cache files. - - If you need to do unusual things to compile the package, please try -to figure out how `configure' could check whether to do them, and mail -diffs or instructions to the address given in the `README' so they can -be considered for the next release. If you are using the cache, and at -some point `config.cache' contains results you don't want to keep, you -may remove or edit it. - - The file `configure.ac' (or `configure.in') is used to create -`configure' by a program called `autoconf'. You need `configure.ac' if -you want to change it or regenerate `configure' using a newer version -of `autoconf'. - -The simplest way to compile this package is: - - 1. `cd' to the directory containing the package's source code and type - `./configure' to configure the package for your system. - - Running `configure' might take a while. While running, it prints - some messages telling which features it is checking for. - - 2. Type `make' to compile the package. - - 3. Optionally, type `make check' to run any self-tests that come with - the package. - - 4. Type `make install' to install the programs and any data files and - documentation. - - 5. You can remove the program binaries and object files from the - source code directory by typing `make clean'. To also remove the - files that `configure' created (so you can compile the package for - a different kind of computer), type `make distclean'. There is - also a `make maintainer-clean' target, but that is intended mainly - for the package's developers. If you use it, you may have to get - all sorts of other programs in order to regenerate files that came - with the distribution. - - 6. Often, you can also type `make uninstall' to remove the installed - files again. - -Compilers and Options -===================== - -Some systems require unusual options for compilation or linking that the -`configure' script does not know about. Run `./configure --help' for -details on some of the pertinent environment variables. - - You can give `configure' initial values for configuration parameters -by setting variables in the command line or in the environment. Here -is an example: - - ./configure CC=c99 CFLAGS=-g LIBS=-lposix - - *Note Defining Variables::, for more details. - -Compiling For Multiple Architectures -==================================== - -You can compile the package for more than one kind of computer at the -same time, by placing the object files for each architecture in their -own directory. To do this, you can use GNU `make'. `cd' to the -directory where you want the object files and executables to go and run -the `configure' script. `configure' automatically checks for the -source code in the directory that `configure' is in and in `..'. - - With a non-GNU `make', it is safer to compile the package for one -architecture at a time in the source code directory. After you have -installed the package for one architecture, use `make distclean' before -reconfiguring for another architecture. - -Installation Names -================== - -By default, `make install' installs the package's commands under -`/usr/local/bin', include files under `/usr/local/include', etc. You -can specify an installation prefix other than `/usr/local' by giving -`configure' the option `--prefix=PREFIX'. - - You can specify separate installation prefixes for -architecture-specific files and architecture-independent files. If you -pass the option `--exec-prefix=PREFIX' to `configure', the package uses -PREFIX as the prefix for installing programs and libraries. -Documentation and other data files still use the regular prefix. - - In addition, if you use an unusual directory layout you can give -options like `--bindir=DIR' to specify different values for particular -kinds of files. Run `configure --help' for a list of the directories -you can set and what kinds of files go in them. - - If the package supports it, you can cause programs to be installed -with an extra prefix or suffix on their names by giving `configure' the -option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. - -Optional Features -================= - -Some packages pay attention to `--enable-FEATURE' options to -`configure', where FEATURE indicates an optional part of the package. -They may also pay attention to `--with-PACKAGE' options, where PACKAGE -is something like `gnu-as' or `x' (for the X Window System). The -`README' should mention any `--enable-' and `--with-' options that the -package recognizes. - - For packages that use the X Window System, `configure' can usually -find the X include and library files automatically, but if it doesn't, -you can use the `configure' options `--x-includes=DIR' and -`--x-libraries=DIR' to specify their locations. - -Specifying the System Type -========================== - -There may be some features `configure' cannot figure out automatically, -but needs to determine by the type of machine the package will run on. -Usually, assuming the package is built to be run on the _same_ -architectures, `configure' can figure that out, but if it prints a -message saying it cannot guess the machine type, give it the -`--build=TYPE' option. TYPE can either be a short name for the system -type, such as `sun4', or a canonical name which has the form: - - CPU-COMPANY-SYSTEM - -where SYSTEM can have one of these forms: - - OS KERNEL-OS - - See the file `config.sub' for the possible values of each field. If -`config.sub' isn't included in this package, then this package doesn't -need to know the machine type. - - If you are _building_ compiler tools for cross-compiling, you should -use the option `--target=TYPE' to select the type of system they will -produce code for. - - If you want to _use_ a cross compiler, that generates code for a -platform different from the build platform, you should specify the -"host" platform (i.e., that on which the generated programs will -eventually be run) with `--host=TYPE'. - -Sharing Defaults -================ - -If you want to set default values for `configure' scripts to share, you -can create a site shell script called `config.site' that gives default -values for variables like `CC', `cache_file', and `prefix'. -`configure' looks for `PREFIX/share/config.site' if it exists, then -`PREFIX/etc/config.site' if it exists. Or, you can set the -`CONFIG_SITE' environment variable to the location of the site script. -A warning: not all `configure' scripts look for a site script. - -Defining Variables -================== - -Variables not defined in a site shell script can be set in the -environment passed to `configure'. However, some packages may run -configure again during the build, and the customized values of these -variables may be lost. In order to avoid this problem, you should set -them in the `configure' command line, using `VAR=value'. For example: - - ./configure CC=/usr/local2/bin/gcc - -causes the specified `gcc' to be used as the C compiler (unless it is -overridden in the site shell script). - -Unfortunately, this technique does not work for `CONFIG_SHELL' due to -an Autoconf bug. Until the bug is fixed you can use this workaround: - - CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash - -`configure' Invocation -====================== - -`configure' recognizes the following options to control how it operates. - -`--help' -`-h' - Print a summary of the options to `configure', and exit. - -`--version' -`-V' - Print the version of Autoconf used to generate the `configure' - script, and exit. - -`--cache-file=FILE' - Enable the cache: use and save the results of the tests in FILE, - traditionally `config.cache'. FILE defaults to `/dev/null' to - disable caching. - -`--config-cache' -`-C' - Alias for `--cache-file=config.cache'. - -`--quiet' -`--silent' -`-q' - Do not print messages saying which checks are being made. To - suppress all normal output, redirect it to `/dev/null' (any error - messages will still be shown). - -`--srcdir=DIR' - Look for the package's source code in directory DIR. Usually - `configure' can determine that directory automatically. - -`configure' also accepts some other, not widely useful, options. Run -`configure --help' for more details. -
--- a/lwlink/branches/1.0/Makefile.am Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,2 +0,0 @@ -SUBDIRS = src -DIST_SUBDIRS = doc src
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--- a/lwlink/branches/1.0/README.MAINT Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,39 +0,0 @@ -This file is intended for source package maintainers/distributors. - -Before a release is made, a branch for that release must be made. Within -that branch, all files that will be distributed with the particular release -must be generated and added to the repository on that branch. Once the -release is deemed stable and ready for release, the release tag should -be generated from the head of that particular branch. Thus all release -series will have the autotool generated files in the repository. - -Any branch not directly intended to be a release need not include the -autotool generated files. - -The trunk development stream must not include the autotool generated files -as these are likely to change rapidly and it can cause a great deal of -confusion for little gain. - -By including the generated files in the release branches, it is possible -to replicate any problems users of the package may have, including if it -is due to problems with the autotools themselves. - - -Naming of branches and tags should conform to the following guidlines. - -1. any branch leading to a release series must be named as the base revision -of the series. Thus, for a 1.0 release, the branch is called 1.0 and will -contain the results for a 1.0 release, a 1.0.1 release, and so on. If a -sub-release will occur, say under 1.0.1, then a branch named "1.0.1" would -be created and then releases such as 1.0.1.1 would be created. This should -be avoided if at all possible. - -2. any tag for a specific release version will be named as the release. So -for a 1.0 release, the name would be "1.0". For version 1.0.1.1, the name -would be "1.0.1.1". - -3. branches not associated with a release stream - say for feature development -or what have you should be named sensibly and should be removed when no longer -needed. They must not appear to be version numbers. - -4. tags not specifying a release must not look like version numbers
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--- a/lwlink/branches/1.0/doc/Makefile.am Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,2 +0,0 @@ -EXTRA_DIST = lwlink.txt scripts.txt -
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--- a/lwlink/branches/1.0/doc/lwlink.txt Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,51 +0,0 @@ -This is the companion linker to LWASM. It reads object files generated by -LWASM and combines them into an actual binary. - -During linking, each file is read into memory. A list of externally -referenced symbols is made along with where these symbols are referenced. -Each external reference is checked against all previously loaded files (in -order of loading) and if a match is found, a note of that fact is made and a -link between the previously loaded file and the current reference. - -Once all files are loaded, the symbol table is checked for any symbols which -are still unresolved. If any are found, the linking process complains and -bails out. - -Once all the object files have been read, the linker follows a -pre-determined script for the specified target or a script supplied by the -user to lay out the binary. The instructions from the script are followed -blindly as it is assumed the user knows what he is doing. - -For each defined section, the linker begins constructing the section data by -resolving each instance of that section in the order it was encountered. All -symbols defined by that section (local or exported) are assigned addresses. -The exact offset into the final section data is recorded for any incomplete -references in that section. All section base address references are resolved -to actual addresses at this stage. - -Once all sections have been laid out and addresses assigned to all symbols, -all incomplete references are resolved and the resulting value placed into -the appropriate data stream. If any references cannot be resolved at this -stage, the linker will complain and bail out. - -Once all sections, symbols, and incomplete references have been resolved, -the binary will output as appropriate for the specified target. - -See the file "scripts.txt" for information about linker scripts and the -restrictions based on the output target. - -The following output targets are supported: - -Raw: this is a raw binary with no header information, etc. Suitable for ROM -images, etc. By default, the raw target starts the binary at address 0, puts -any section named "init" first, then "code", then all other non-bss -sections, then all bss sections. Note that any "bss" type section that -exists anywhere but at the end of the binary (i.e. is between or before one -or more non-bss sections) will be included as a series of NUL bytes. - -DECB: this creates a LOADM style binary according to the linker script. By -default, this target places the sections in the same order as the raw target -but implements a load address of $2000. bss sections will not be included in -the actual output. If a bss section appears between two non-bss sections, a -new output block will be created in the output file. -
--- a/lwlink/branches/1.0/doc/scripts.txt Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,63 +0,0 @@ -LWLINK linker scripts - -A linker script is used to instruct the linker about how to assemble the -various sections into a completed binary. It consists of a series of -directives which are considered in the order they are encountered. Any -section not referenced by a directive is assumed to be loaded after the -final section explicitly referenced. - -The sections will appear in the resulting binary in the order they are -specified in the script file. - -If a referenced section is not found, the linker will behave as though the -section did exist but had a zero size, no relocations, and no exports. - -A section may only be referenced once. Any subsequent references will have -no effect. - -All numbers are hexadecimal. - -section <name> load <addr> - -This causes the section <name> to load at <addr>. For raw target, only one -"load at" entry is allowed for non-bss sections and it must be the first -one. For raw targets, it affects the addresses the linker assigns to symbols -but has no other affect on the output. bss sections may all have separate -load addresses but since they will not appear in the binary anyway, this is -okay. - -For the DECB target, each "load" entry will cause a new "block" to be -output to the binary which will contain the load address. It is legal for -sections to overlap in this manner - the linker assumes the loader will sort -everything out. - -section <name> - -This will cause the section <name> to load after the previously listed -section. - -exec <addr or sym> - -This will cause the execution address (entry point) to be the address -specified (in hex) *or* the specified symbol name. The symbol name must -match a symbol that is exported by one of the object files being linked. -This has no effect for targets that do not encode the entry point into the -resulting file. If not specified, the entry point is assumed to be address 0 -which is probably not what you want. The default link scripts for targets -that support this directive automatically starts at the beginning of the -first section (usually "init" or "code") that is emitted in the binary. - -pad <size> - -This will cause the output file to be padded with NUL bytes to be exactly -<size> bytes in length. This only makes sense for a raw target. - - -If <name> is "*", then any section not already matched by the script will be -matched. For format *,<flags> can be used to select sections which have -particular flags set (or not set). For instance: - -*,!bss This would match all sections that do not have the bss flag set -*,bss this would match all sections that do have the bss flag set - -
--- a/lwlink/branches/1.0/install-sh Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,519 +0,0 @@ -#!/bin/sh -# install - install a program, script, or datafile - -scriptversion=2006-12-25.00 - -# This originates from X11R5 (mit/util/scripts/install.sh), which was -# later released in X11R6 (xc/config/util/install.sh) with the -# following copyright and license. -# -# Copyright (C) 1994 X Consortium -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to -# deal in the Software without restriction, including without limitation the -# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or -# sell copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN -# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- -# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -# -# Except as contained in this notice, the name of the X Consortium shall not -# be used in advertising or otherwise to promote the sale, use or other deal- -# ings in this Software without prior written authorization from the X Consor- -# tium. -# -# -# FSF changes to this file are in the public domain. -# -# Calling this script install-sh is preferred over install.sh, to prevent -# `make' implicit rules from creating a file called install from it -# when there is no Makefile. -# -# This script is compatible with the BSD install script, but was written -# from scratch. - -nl=' -' -IFS=" "" $nl" - -# set DOITPROG to echo to test this script - -# Don't use :- since 4.3BSD and earlier shells don't like it. -doit=${DOITPROG-} -if test -z "$doit"; then - doit_exec=exec -else - doit_exec=$doit -fi - -# Put in absolute file names if you don't have them in your path; -# or use environment vars. - -chgrpprog=${CHGRPPROG-chgrp} -chmodprog=${CHMODPROG-chmod} -chownprog=${CHOWNPROG-chown} -cmpprog=${CMPPROG-cmp} -cpprog=${CPPROG-cp} -mkdirprog=${MKDIRPROG-mkdir} -mvprog=${MVPROG-mv} -rmprog=${RMPROG-rm} -stripprog=${STRIPPROG-strip} - -posix_glob='?' -initialize_posix_glob=' - test "$posix_glob" != "?" || { - if (set -f) 2>/dev/null; then - posix_glob= - else - posix_glob=: - fi - } -' - -posix_mkdir= - -# Desired mode of installed file. -mode=0755 - -chgrpcmd= -chmodcmd=$chmodprog -chowncmd= -mvcmd=$mvprog -rmcmd="$rmprog -f" -stripcmd= - -src= -dst= -dir_arg= -dst_arg= - -copy_on_change=false -no_target_directory= - -usage="\ -Usage: $0 [OPTION]... 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--- a/lwlink/branches/1.0/missing Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,367 +0,0 @@ -#! /bin/sh -# Common stub for a few missing GNU programs while installing. - -scriptversion=2006-05-10.23 - -# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006 -# Free Software Foundation, Inc. -# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996. - -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. - -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -# 02110-1301, USA. - -# As a special exception to the GNU General Public License, if you -# distribute this file as part of a program that contains a -# configuration script generated by Autoconf, you may include it under -# the same distribution terms that you use for the rest of that program. - -if test $# -eq 0; then - echo 1>&2 "Try \`$0 --help' for more information" - exit 1 -fi - -run=: -sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p' -sed_minuso='s/.* -o \([^ ]*\).*/\1/p' - -# In the cases where this matters, `missing' is being run in the -# srcdir already. -if test -f configure.ac; then - configure_ac=configure.ac -else - configure_ac=configure.in -fi - -msg="missing on your system" - -case $1 in ---run) - # Try to run requested program, and just exit if it succeeds. - run= - shift - "$@" && exit 0 - # Exit code 63 means version mismatch. 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--- a/lwlink/branches/1.0/src/config.h.in Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,22 +0,0 @@ -/* src/config.h.in. Generated from configure.ac by autoheader. */ - -/* Name of package */ -#undef PACKAGE - -/* Define to the address where bug reports for this package should be sent. */ -#undef PACKAGE_BUGREPORT - -/* Define to the full name of this package. */ -#undef PACKAGE_NAME - -/* Define to the full name and version of this package. */ -#undef PACKAGE_STRING - -/* Define to the one symbol short name of this package. */ -#undef PACKAGE_TARNAME - -/* Define to the version of this package. */ -#undef PACKAGE_VERSION - -/* Version number of package */ -#undef VERSION
--- a/lwlink/branches/1.0/src/expr.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,356 +0,0 @@ -/* -expr.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -This file contains the actual expression evaluator -*/ - -#define __expr_c_seen__ - -#include <ctype.h> -#include <stdlib.h> -#include <string.h> - -#include "expr.h" -#include "util.h" - -lw_expr_stack_t *lw_expr_stack_create(void) -{ - lw_expr_stack_t *s; - - s = lw_malloc(sizeof(lw_expr_stack_t)); - s -> head = NULL; - s -> tail = NULL; - return s; -} - -void lw_expr_stack_free(lw_expr_stack_t *s) -{ - while (s -> head) - { - s -> tail = s -> head; - s -> head = s -> head -> next; - lw_expr_term_free(s -> tail -> term); - lw_free(s -> tail); - } - lw_free(s); -} - -void lw_expr_term_free(lw_expr_term_t *t) -{ - if (t) - { - if (t -> term_type == LW_TERM_SYM) - lw_free(t -> symbol); - lw_free(t); - } -} - -lw_expr_term_t *lw_expr_term_create_oper(int oper) -{ - lw_expr_term_t *t; - - t = lw_malloc(sizeof(lw_expr_term_t)); - t -> term_type = LW_TERM_OPER; - t -> value = oper; - return t; -} - -lw_expr_term_t *lw_expr_term_create_int(int val) -{ - lw_expr_term_t *t; - - t = lw_malloc(sizeof(lw_expr_term_t)); - t -> term_type = LW_TERM_INT; - t -> value = val; - return t; -} - -lw_expr_term_t *lw_expr_term_create_sym(char *sym, int symtype) -{ - lw_expr_term_t *t; - - t = lw_malloc(sizeof(lw_expr_term_t)); - t -> term_type = LW_TERM_SYM; - t -> symbol = lw_strdup(sym); - t -> value = symtype; - return t; -} - -lw_expr_term_t *lw_expr_term_dup(lw_expr_term_t *t) -{ - switch (t -> term_type) - { - case LW_TERM_INT: - return lw_expr_term_create_int(t -> value); - - case LW_TERM_OPER: - return lw_expr_term_create_oper(t -> value); - - case LW_TERM_SYM: - return lw_expr_term_create_sym(t -> symbol, t -> value); - - default: - exit(1); - } -// can't get here -} - -void lw_expr_stack_push(lw_expr_stack_t *s, lw_expr_term_t *t) -{ - lw_expr_stack_node_t *n; - - if (!s) - { - exit(1); - } - - n = lw_malloc(sizeof(lw_expr_stack_node_t)); - n -> next = NULL; - n -> prev = s -> tail; - n -> term = lw_expr_term_dup(t); - - if (s -> head) - { - s -> tail -> next = n; - s -> tail = n; - } - else - { - s -> head = n; - s -> tail = n; - } -} - -lw_expr_term_t *lw_expr_stack_pop(lw_expr_stack_t *s) -{ - lw_expr_term_t *t; - lw_expr_stack_node_t *n; - - if (!(s -> tail)) - return NULL; - - n = s -> tail; - s -> tail = n -> prev; - if (!(n -> prev)) - { - s -> head = NULL; - } - - t = n -> term; - n -> term = NULL; - - lw_free(n); - - return t; -} - -/* -take an expression stack s and scan for operations that can be completed - -return -1 on error, 0 on no error - -possible errors are: division by zero or unknown operator - -theory of operation: - -scan the stack for an operator which has two constants preceding it (binary) -or 1 constant preceding it (unary) and if found, perform the calculation -and replace the operator and its operands with the result - -repeat the scan until no futher simplications are found or if there are no -further operators or only a single term remains - -*/ -int lw_expr_reval(lw_expr_stack_t *s, lw_expr_stack_t *(*sfunc)(char *sym, int stype, void *state), void *state) -{ - lw_expr_stack_node_t *n, *n2; - lw_expr_stack_t *ss; - int c; - -next_iter_sym: - // resolve symbols - // symbols that do not resolve to an expression are left alone - for (c = 0, n = s -> head; n; n = n -> next) - { - if (n -> term -> term_type == LW_TERM_SYM) - { - ss = sfunc(n -> term -> symbol, n -> term -> value, state); - if (ss) - { - c++; - // splice in the result stack - if (n -> prev) - { - n -> prev -> next = ss -> head; - } - else - { - s -> head = ss -> head; - } - ss -> head -> prev = n -> prev; - ss -> tail -> next = n -> next; - if (n -> next) - { - n -> next -> prev = ss -> tail; - } - else - { - s -> tail = ss -> tail; - } - lw_expr_term_free(n -> term); - lw_free(n); - n = ss -> tail; - - ss -> head = NULL; - ss -> tail = NULL; - lw_expr_stack_free(ss); - } - } - } - if (c) - goto next_iter_sym; - -next_iter: - // a single term - if (s -> head == s -> tail) - return 0; - - // search for an operator - for (n = s -> head; n; n = n -> next) - { - if (n -> term -> term_type == LW_TERM_OPER) - { - if (n -> term -> value == LW_OPER_NEG - || n -> term -> value == LW_OPER_COM - ) - { - // unary operator - if (n -> prev && n -> prev -> term -> term_type == LW_TERM_INT) - { - // a unary operator we can resolve - // we do the op then remove the term "n" is pointing at - if (n -> term -> value == LW_OPER_NEG) - { - n -> prev -> term -> value = -(n -> prev -> term -> value); - } - else if (n -> term -> value == LW_OPER_COM) - { - n -> prev -> term -> value = ~(n -> prev -> term -> value); - } - n -> prev -> next = n -> next; - if (n -> next) - n -> next -> prev = n -> prev; - else - s -> tail = n -> prev; - - lw_expr_term_free(n -> term); - lw_free(n); - break; - } - } - else - { - // binary operator - if (n -> prev && n -> prev -> prev && n -> prev -> term -> term_type == LW_TERM_INT && n -> prev -> prev -> term -> term_type == LW_TERM_INT) - { - // a binary operator we can resolve - switch (n -> term -> value) - { - case LW_OPER_PLUS: - n -> prev -> prev -> term -> value += n -> prev -> term -> value; - break; - - case LW_OPER_MINUS: - n -> prev -> prev -> term -> value -= n -> prev -> term -> value; - break; - - case LW_OPER_TIMES: - n -> prev -> prev -> term -> value *= n -> prev -> term -> value; - break; - - case LW_OPER_DIVIDE: - if (n -> prev -> term -> value == 0) - return -1; - n -> prev -> prev -> term -> value /= n -> prev -> term -> value; - break; - - case LW_OPER_MOD: - if (n -> prev -> term -> value == 0) - return -1; - n -> prev -> prev -> term -> value %= n -> prev -> term -> value; - break; - - case LW_OPER_INTDIV: - if (n -> prev -> term -> value == 0) - return -1; - n -> prev -> prev -> term -> value /= n -> prev -> term -> value; - break; - - case LW_OPER_BWAND: - n -> prev -> prev -> term -> value &= n -> prev -> term -> value; - break; - - case LW_OPER_BWOR: - n -> prev -> prev -> term -> value |= n -> prev -> term -> value; - break; - - case LW_OPER_BWXOR: - n -> prev -> prev -> term -> value ^= n -> prev -> term -> value; - break; - - case LW_OPER_AND: - n -> prev -> prev -> term -> value = (n -> prev -> term -> value && n -> prev -> prev -> term -> value) ? 1 : 0; - break; - - case LW_OPER_OR: - n -> prev -> prev -> term -> value = (n -> prev -> term -> value || n -> prev -> prev -> term -> value) ? 1 : 0; - break; - - default: - // return error if unknown operator! - return -1; - } - - // now remove the two unneeded entries from the stack - n -> prev -> prev -> next = n -> next; - if (n -> next) - n -> next -> prev = n -> prev -> prev; - else - s -> tail = n -> prev -> prev; - - lw_expr_term_free(n -> term); - lw_expr_term_free(n -> prev -> term); - lw_free(n -> prev); - lw_free(n); - break; - } - } - } - } - // note for the terminally confused about dynamic memory and pointers: - // n will not be NULL even after the lw_free calls above so - // this test will still work (n will be a dangling pointer) - // (n will only be NULL if we didn't find any operators to simplify) - if (n) - goto next_iter; - - return 0; -}
--- a/lwlink/branches/1.0/src/expr.h Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,107 +0,0 @@ -/* -expr.h -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -Definitions for expression evaluator -*/ - -#ifndef __expr_h_seen__ -#define __expr_h_seen__ - -#ifndef __expr_c_seen__ -#define __expr_E__ extern -#else -#define __expr_E__ -#endif - -// term types -#define LW_TERM_NONE 0 -#define LW_TERM_OPER 1 // an operator -#define LW_TERM_INT 2 // 32 bit signed integer -#define LW_TERM_SYM 3 // symbol reference - -// operator types -#define LW_OPER_NONE 0 -#define LW_OPER_PLUS 1 // + -#define LW_OPER_MINUS 2 // - -#define LW_OPER_TIMES 3 // * -#define LW_OPER_DIVIDE 4 // / -#define LW_OPER_MOD 5 // % -#define LW_OPER_INTDIV 6 // \ (don't end line with \) -#define LW_OPER_BWAND 7 // bitwise AND -#define LW_OPER_BWOR 8 // bitwise OR -#define LW_OPER_BWXOR 9 // bitwise XOR -#define LW_OPER_AND 10 // boolean AND -#define LW_OPER_OR 11 // boolean OR -#define LW_OPER_NEG 12 // - unary negation (2's complement) -#define LW_OPER_COM 13 // ^ unary 1's complement - - -// term structure -typedef struct lw_expr_term_s -{ - int term_type; // type of term (see above) - char *symbol; // name of a symbol - int value; // value of the term (int) or operator number (OPER) -} lw_expr_term_t; - -// type for an expression evaluation stack -typedef struct lw_expr_stack_node_s lw_expr_stack_node_t; -struct lw_expr_stack_node_s -{ - lw_expr_term_t *term; - lw_expr_stack_node_t *prev; - lw_expr_stack_node_t *next; -}; - -typedef struct lw_expr_stack_s -{ - lw_expr_stack_node_t *head; - lw_expr_stack_node_t *tail; -} lw_expr_stack_t; - -__expr_E__ void lw_expr_term_free(lw_expr_term_t *t); -__expr_E__ lw_expr_term_t *lw_expr_term_create_oper(int oper); -__expr_E__ lw_expr_term_t *lw_expr_term_create_sym(char *sym, int symtype); -__expr_E__ lw_expr_term_t *lw_expr_term_create_int(int val); -__expr_E__ lw_expr_term_t *lw_expr_term_dup(lw_expr_term_t *t); - -__expr_E__ void lw_expr_stack_free(lw_expr_stack_t *s); -__expr_E__ lw_expr_stack_t *lw_expr_stack_create(void); - -__expr_E__ void lw_expr_stack_push(lw_expr_stack_t *s, lw_expr_term_t *t); -__expr_E__ lw_expr_term_t *lw_expr_stack_pop(lw_expr_stack_t *s); - -// simplify expression -__expr_E__ int lw_expr_reval(lw_expr_stack_t *s, lw_expr_stack_t *(*sfunc)(char *sym, int symtype, void *state), void *state); - -// useful macros -// is the expression "simple" (one term)? -#define lw_expr_is_simple(s) ((s) -> head == (s) -> tail) - -// is the expression constant? -#define lw_expr_is_constant(s) (lw_expr_is_simple(s) && (!((s) -> head) || (s) -> head -> term -> term_type == LW_TERM_INT)) - -// get the constant value of an expression or 0 if not constant -#define lw_expr_get_value(s) (lw_expr_is_constant(s) ? ((s) -> head ? (s) -> head -> term -> value : 0) : 0) - -#undef __expr_E__ - -#endif // __expr_h_seen__
--- a/lwlink/branches/1.0/src/link.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,265 +0,0 @@ -/* -link.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Resolve section and symbol addresses; handle incomplete references -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> -#include <stdlib.h> - -#include "expr.h" -#include "lwlink.h" -#include "util.h" - -struct section_list *sectlist = NULL; -int nsects = 0; - -// work out section load order and resolve base addresses for each section -// make a list of sections to load in order -void resolve_sections(void) -{ - int laddr = 0; - int ln, sn, fn; - - for (ln = 0; ln < linkscript.nlines; ln++) - { -// printf("Linker script line %d: '%s', %04X, %d, %d\n", ln, linkscript.lines[ln].sectname, linkscript.lines[ln].loadat, linkscript.lines[ln].yesflags, linkscript.lines[ln].noflags); - if (linkscript.lines[ln].sectname) - { - int f = 0; - // named section - // look for all instances of a section by the specified name - // and resolve base addresses and add to the list - for (fn = 0; fn < ninputfiles; fn++) - { - for (sn = 0; sn < inputfiles[fn] -> nsections; sn++) - { -// printf(" Considering %s:%s\n", inputfiles[fn]->filename, inputfiles[fn]->sections[sn].name); - if (!strcmp(linkscript.lines[ln].sectname, inputfiles[fn] -> sections[sn].name)) - { - // we have a match - sectlist = lw_realloc(sectlist, sizeof(struct section_list) * (nsects + 1)); - sectlist[nsects].ptr = &(inputfiles[fn] -> sections[sn]); - - inputfiles[fn] -> sections[sn].processed = 1; - if (!f && linkscript.lines[ln].loadat >= 0) - { - f = 1; - sectlist[nsects].forceaddr = 1; - laddr = linkscript.lines[ln].loadat; - } - else - { - sectlist[nsects].forceaddr = 0; - } - inputfiles[fn] -> sections[sn].loadaddress = laddr; - laddr += inputfiles[fn] -> sections[sn].codesize; - nsects++; - } - } - } - } - else - { - // wildcard section - // look for all sections not yet processed that match flags - - int f = 0; - int fn0, sn0; - char *sname; - - // named section - // look for all instances of a section by the specified name - // and resolve base addresses and add to the list - for (fn0 = 0; fn0 < ninputfiles; fn0++) - { - for (sn0 = 0; sn0 < inputfiles[fn0] -> nsections; sn0++) - { - // ignore if the "no flags" bit says to - if (linkscript.lines[ln].noflags && (inputfiles[fn0] -> sections[sn0].flags & linkscript.lines[ln].noflags)) - continue; - // ignore unless the yes flags tell us not to - if (linkscript.lines[ln].yesflags && (inputfiles[fn0] -> sections[sn0].flags & linkscript.lines[ln].yesflags == 0)) - continue; - if (inputfiles[fn0] -> sections[sn0].processed == 0) - { - sname = inputfiles[fn0] -> sections[sn0].name; - for (fn = 0; fn < ninputfiles; fn++) - { - for (sn = 0; sn < inputfiles[fn] -> nsections; sn++) - { - if (!strcmp(sname, inputfiles[fn] -> sections[sn].name)) - { - // we have a match - sectlist = lw_realloc(sectlist, sizeof(struct section_list) * (nsects + 1)); - sectlist[nsects].ptr = &(inputfiles[fn] -> sections[sn]); - - inputfiles[fn] -> sections[sn].processed = 1; - if (!f && linkscript.lines[ln].loadat >= 0) - { - f = 1; - sectlist[nsects].forceaddr = 1; - laddr = linkscript.lines[ln].loadat; - } - else - { - sectlist[nsects].forceaddr = 0; - } - inputfiles[fn] -> sections[sn].loadaddress = laddr; - laddr += inputfiles[fn] -> sections[sn].codesize; - nsects++; - } - } - } - } - } - } - } - } - - // theoretically, all the base addresses are set now -} - -// resolve all incomplete references now -// anything that is unresolvable at this stage will throw an error -// because we know the load address of every section now -lw_expr_stack_t *resolve_sym(char *sym, int symtype, void *state) -{ - section_t *sect = state; - lw_expr_term_t *term; - int val = 0, i, fn; - lw_expr_stack_t *s; - symtab_t *se; - - if (symtype == 1) - { - // local symbol - if (!sym) - { - val = sect -> loadaddress; - goto out; - } - - // start with this section - for (se = sect -> localsyms; se; se = se -> next) - { - if (!strcmp(se -> sym, sym)) - { - val = se -> offset + sect -> loadaddress; - goto out; - } - } - // not in this section - check all sections in this file - for (i = 0; i < sect -> file -> nsections; i++) - { - for (se = sect -> file -> sections[i].localsyms; se; se = se -> next) - { - if (!strcmp(se -> sym, sym)) - { - val = se -> offset + sect -> file -> sections[i].loadaddress; - goto out; - } - } - } - // not found - fprintf(stderr, "Local symbol %s not found in %s:%s\n", sym, sect -> file -> filename, sect -> name); - exit(1); - } - else - { - // external symbol - // read all files in order until found (or not found) - for (fn = 0; fn < ninputfiles; fn++) - { - for (i = 0; i < inputfiles[fn] -> nsections; i++) - { - for (se = inputfiles[fn] -> sections[i].exportedsyms; se; se = se -> next) - { - if (!strcmp(sym, se -> sym)) - { - val = se -> offset + inputfiles[fn] -> sections[i].loadaddress; - goto out; - } - } - } - } - if (sect) - { - fprintf(stderr, "External symbol %s not found in %s:%s\n", sym, sect -> file -> filename, sect -> name); - } - else - { - fprintf(stderr, "External symbol %s not found\n", sym); - } - exit(1); - } - fprintf(stderr, "Shouldn't ever get here!!!\n"); - exit(88); -out: - s = lw_expr_stack_create(); - term = lw_expr_term_create_int(val & 0xffff); - lw_expr_stack_push(s, term); - lw_expr_term_free(term); - return s; -} - -void resolve_references(void) -{ - int sn; - reloc_t *rl; - int rval; - - // resolve entry point if required - // this must resolve to an *exported* symbol and will resolve to the - // first instance of that symbol - if (linkscript.execsym) - { - lw_expr_stack_t *s; - - s = resolve_sym(linkscript.execsym, 0, NULL); - linkscript.execaddr = lw_expr_get_value(s); - lw_expr_stack_free(s); - } - - for (sn = 0; sn < nsects; sn++) - { - for (rl = sectlist[sn].ptr -> incompletes; rl; rl = rl -> next) - { - // do a "simplify" on the expression - rval = lw_expr_reval(rl -> expr, resolve_sym, sectlist[sn].ptr); - - // is it constant? error out if not - if (rval != 0 || !lw_expr_is_constant(rl -> expr)) - { - fprintf(stderr, "Incomplete reference at %s:%s:%02X\n", sectlist[sn].ptr -> file -> filename, sectlist[sn].ptr -> name, rl -> offset); - exit(1); - } - - // put the value into the relocation address - rval = lw_expr_get_value(rl -> expr); - sectlist[sn].ptr -> code[rl -> offset] = (rval >> 8) & 0xff; - sectlist[sn].ptr -> code[rl -> offset + 1] = rval & 0xff; - } - } -}
--- a/lwlink/branches/1.0/src/lwlink.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,52 +0,0 @@ -/* -lwlink.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#define __lwlink_c_seen__ - -#include <argp.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" -#include "util.h" - -int debug_level = 0; -int outformat = OUTPUT_DECB; -char *outfile = NULL; -char *scriptfile = NULL; - -fileinfo_t **inputfiles = NULL; -int ninputfiles = 0; - -void add_input_file(char *fn) -{ - inputfiles = lw_realloc(inputfiles, sizeof(fileinfo_t *) * (ninputfiles + 1)); - inputfiles[ninputfiles] = lw_malloc(sizeof(fileinfo_t)); - inputfiles[ninputfiles++] -> filename = lw_strdup(fn); -} -
--- a/lwlink/branches/1.0/src/lwlink.h Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,130 +0,0 @@ -/* -lwlink.h -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - -Contains the main defs used by the linker -*/ - - -#ifndef __lwlink_h_seen__ -#define __lwlink_h_seen__ - -#include "expr.h" - -#define OUTPUT_DECB 0 // DECB multirecord format -#define OUTPUT_RAW 1 // raw sequence of bytes - -typedef struct symtab_s symtab_t; -struct symtab_s -{ - unsigned char *sym; // symbol name - int offset; // local offset -// int realval; // resolved value - symtab_t *next; // next symbol -}; - -typedef struct reloc_s reloc_t; -struct reloc_s -{ - int offset; // where in the section - lw_expr_stack_t *expr; // the expression to calculate it - reloc_t *next; // ptr to next relocation -}; - -typedef struct fileinfo_s fileinfo_t; - -#define SECTION_BSS 1 -typedef struct -{ - unsigned char *name; // name of the section - int flags; // section flags - int codesize; // size of the code - unsigned char *code; // pointer to the code - int loadaddress; // the actual load address of the section - int processed; // was the section processed yet? - - symtab_t *localsyms; // local symbol table - symtab_t *exportedsyms; // exported symbols table - - reloc_t *incompletes; // table of incomplete references - - fileinfo_t *file; // the file we are in -} section_t; - -struct fileinfo_s -{ - char *filename; - unsigned char *filedata; - long filesize; - section_t *sections; - int nsections; - -}; - -struct section_list -{ - section_t *ptr; // ptr to section structure - int forceaddr; // was this force to an address by the link script? -}; - -#ifndef __link_c_seen__ -extern struct section_list *sectlist; -extern int nsects; -#endif - - -#ifndef __lwlink_c_seen__ - -extern int debug_level; -extern int outformat; -extern char *outfile; -extern int ninputfiles; -extern fileinfo_t **inputfiles; -extern char *scriptfile; - -#define __lwlink_E__ extern -#else -#define __lwlink_E__ -#endif // __lwlink_c_seen__ - -__lwlink_E__ void add_input_file(char *fn); - -#undef __lwlink_E__ - -struct scriptline_s -{ - char *sectname; // name of section, NULL for wildcard - int loadat; // address to load at (or -1) - int noflags; // flags to NOT have - int yesflags; // flags to HAVE -}; - -typedef struct -{ - int nlines; // number of lines in the script - struct scriptline_s *lines; // the parsed script lines (section) - int padsize; // the size to pad to, -1 for none - char *execsym; // entry point symbol - int execaddr; // execution address (entry point) -} linkscript_t; - -#ifndef __script_c_seen__ -extern linkscript_t linkscript; -#endif - -#endif //__lwlink_h_seen__
--- a/lwlink/branches/1.0/src/main.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,155 +0,0 @@ -/* -main.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Implements the program startup code - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <argp.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" - -// command line option handling -const char *argp_program_version = PACKAGE_STRING; -const char *argp_program_bug_address = PACKAGE_BUGREPORT; - -static error_t parse_opts(int key, char *arg, struct argp_state *state) -{ - switch (key) - { - case 'o': - // output - outfile = arg; - break; - - case 's': - // script file - scriptfile = arg; - break; - - case 'd': - // debug - debug_level++; - break; - - case 'b': - // decb output - outformat = OUTPUT_DECB; - break; - - case 'r': - // raw binary output - outformat = OUTPUT_RAW; - break; - - case 'f': - // output format - if (!strcasecmp(arg, "decb")) - outformat = OUTPUT_DECB; - else if (!strcasecmp(arg, "raw")) - outformat = OUTPUT_RAW; - else - { - fprintf(stderr, "Invalid output format: %s\n", arg); - exit(1); - } - break; - case ARGP_KEY_END: - // done; sanity check - if (!outfile) - outfile = "a.out"; - break; - - case ARGP_KEY_ARG: - add_input_file(arg); - break; - - default: - return ARGP_ERR_UNKNOWN; - } - return 0; -} - -static struct argp_option options[] = -{ - { "output", 'o', "FILE", 0, - "Output to FILE"}, - { "debug", 'd', 0, 0, - "Set debug mode"}, - { "format", 'f', "TYPE", 0, - "Select output format: decb, raw, obj"}, - { "decb", 'b', 0, 0, - "Generate DECB .bin format output, equivalent of --format=decb"}, - { "raw", 'r', 0, 0, - "Generate raw binary format output, equivalent of --format=raw"}, - { "script", 's', "FILE", 0, - "Specify the linking script (overrides the build in defaults)"}, - { 0 } -}; - -static struct argp argp = -{ - options, - parse_opts, - "<input file> ...", - "LWLINK, a HD6309 and MC6809 cross-linker" -}; - -extern void read_files(void); -extern void setup_script(void); -extern void resolve_sections(void); -extern void resolve_references(void); -extern void do_output(void); - -// main function; parse command line, set up assembler state, and run the -// assembler on the first file -int main(int argc, char **argv) -{ - argp_parse(&argp, argc, argv, 0, 0, NULL); - if (ninputfiles == 0) - { - fprintf(stderr, "No input files\n"); - exit(1); - } - - // handle the linker script - setup_script(); - - // read the input files - read_files(); - - // resolve section bases and section order - resolve_sections(); - - // resolve incomplete references - resolve_references(); - - // do the actual output - do_output(); - - exit(0); -}
--- a/lwlink/branches/1.0/src/objdump.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,303 +0,0 @@ -/* -objdump.c -Copyright © 2009 William Astle - -This file is part of LWLINK - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -A standalone program to dump an object file in a text form to stdout - -*/ - -#include <stdio.h> -#include <stdlib.h> - -#include "util.h" - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -void read_lwobj16v0(unsigned char *filedata, long filesize); - -/* -The logic of reading the entire file into memory is simple. All the symbol -names in the file are NUL terminated strings and can be used directly without -making additional copies. -*/ -int main(int argc, char **argv) -{ - int i; - long size; - FILE *f; - long bread; - unsigned char *filedata; - - if (argc != 2) - { - fprintf(stderr, "Must specify exactly one input file.\n"); - exit(1); - } - - f = fopen(argv[1], "rb"); - if (!f) - { - fprintf(stderr, "Can't open file %s:", argv[1]); - perror(""); - exit(1); - } - fseek(f, 0, SEEK_END); - size = ftell(f); - rewind(f); - - filedata = lw_malloc(size); - - bread = fread(filedata, 1, size, f); - if (bread < size) - { - fprintf(stderr, "Short read on file %s (%ld/%ld):", argv[1], bread, size); - perror(""); - exit(1); - } - - fclose(f); - - if (!memcmp(filedata, "LWOBJ16", 8)) - { - // read v0 LWOBJ16 file - read_lwobj16v0(filedata, size); - } - else - { - fprintf(stderr, "%s: unknown file format\n", argv[1]); - exit(1); - } - exit(0); -} - -// this macro is used to bail out if we run off the end of the file data -// while parsing - it keeps the code below cleaner -#define NEXTBYTE() do { cc++; if (cc > filesize) { fprintf(stderr, "***invalid file format\n"); exit(1); } } while (0) -// this macro is used to refer to the current byte in the stream -#define CURBYTE() (filedata[cc < filesize ? cc : filesize - 1]) -// this one will leave the input pointer past the trailing NUL -#define CURSTR() read_lwobj16v0_str(&cc, &filedata, filesize) -unsigned char *read_lwobj16v0_str(long *cc1, unsigned char **filedata1, long filesize) -{ - int cc = *cc1; - unsigned char *filedata = *filedata1; - unsigned char *fp; - fp = &CURBYTE(); - while (CURBYTE()) - NEXTBYTE(); - NEXTBYTE(); - *cc1 = cc; - *filedata1 = filedata; - return fp; -} -// the function below can be switched to dealing with data coming from a -// source other than an in-memory byte pool by adjusting the input data -// in "fn" and the above two macros -void read_lwobj16v0(unsigned char *filedata, long filesize) -{ - unsigned char *fp; - long cc; - int val; - int bss; - - static char *opernames[] = { - "?", - "PLUS", - "MINUS", - "TIMES", - "DIVIDE", - "MOD", - "INTDIV", - "BWAND", - "BWOR", - "BWXOR", - "AND", - "OR", - "NEG", - "COM" - }; - static const int numopers = 13; - - // start reading *after* the magic number - cc = 8; - - while (1) - { - bss = 0; - - // bail out if no more sections - if (!(CURBYTE())) - break; - - fp = CURSTR(); - - printf("SECTION %s\n", fp); - - // read flags - while (CURBYTE()) - { - switch (CURBYTE()) - { - case 0x01: - printf(" FLAG: BSS\n"); - bss = 1; - break; - - default: - printf(" FLAG: %02X (unknown)\n", CURBYTE()); - break; - } - NEXTBYTE(); - } - // skip NUL terminating flags - NEXTBYTE(); - - printf(" Local symbols:\n"); - // now parse the local symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - printf(" %s=%04X\n", fp, val); - - } - // skip terminating NUL - NEXTBYTE(); - - printf(" Exported symbols\n"); - - // now parse the exported symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - printf(" %s=%04X\n", fp, val); - } - // skip terminating NUL - NEXTBYTE(); - - // now parse the incomplete references and make a list of - // external references that need resolution - printf(" Incomplete references\n"); - while (CURBYTE()) - { - printf(" ("); - // parse the expression - while (CURBYTE()) - { - int tt = CURBYTE(); - NEXTBYTE(); - switch (tt) - { - case 0x01: - // 16 bit integer - tt = CURBYTE() << 8; - NEXTBYTE(); - tt |= CURBYTE(); - NEXTBYTE(); - // normalize for negatives... - if (tt > 0x7fff) - tt -= 0x10000; - printf(" I16=%d", tt); - break; - - case 0x02: - // external symbol reference - printf(" ES=%s", CURSTR()); - break; - - case 0x03: - // internal symbol reference - printf(" IS=%s", CURSTR()); - break; - - case 0x04: - // operator - if (CURBYTE() > 0 && CURBYTE() <= numopers) - printf(" OP=%s", opernames[CURBYTE()]); - else - printf(" OP=?"); - NEXTBYTE(); - break; - - case 0x05: - // section base reference (NULL internal reference is - // the section base address - printf(" SB"); - break; - - default: - printf(" ERR"); - } - } - // skip the NUL - NEXTBYTE(); - - // fetch the offset - val = CURBYTE() << 8; - NEXTBYTE(); - val |= CURBYTE() & 0xff; - NEXTBYTE(); - printf(" ) @ %04X\n", val); - } - // skip the NUL terminating the relocations - NEXTBYTE(); - - // now set code location and size and verify that the file - // contains data going to the end of the code (if !SECTION_BSS) - val = CURBYTE() << 8; - NEXTBYTE(); - val |= CURBYTE(); - NEXTBYTE(); - - printf(" CODE %04X bytes", val); - - // skip the code if we're not in a BSS section - if (!bss) - { - int i; - for (i = 0; i < val; i++) - { - if (! (i % 16)) - { - printf("\n %04X ", i); - } - printf("%02X", CURBYTE()); - NEXTBYTE(); - } - } - printf("\n"); - } -}
--- a/lwlink/branches/1.0/src/output.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,127 +0,0 @@ -/* -output.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Actually output the binary -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" - -// this prevents warnings about not using the return value of fwrite() -// and, theoretically, can be replaced with a function that handles things -// better in the future -#define writebytes(s, l, c, f) do { int r; r = fwrite((s), (l), (c), (f)); } while (0) - -void do_output_decb(FILE *of); -void do_output_raw(FILE *of); - -void do_output(void) -{ - FILE *of; - - of = fopen(outfile, "wb"); - if (!of) - { - fprintf(stderr, "Cannot open output file %s: ", outfile); - perror(""); - exit(1); - } - - switch (outformat) - { - case OUTPUT_DECB: - do_output_decb(of); - break; - - case OUTPUT_RAW: - do_output_raw(of); - break; - - default: - fprintf(stderr, "Unknown output format doing output!\n"); - exit(111); - } - - fclose(of); -} - -void do_output_decb(FILE *of) -{ - int sn; - unsigned char buf[5]; - - for (sn = 0; sn < nsects; sn++) - { - if (sectlist[sn].ptr -> flags & SECTION_BSS) - { - // no output for a BSS section - continue; - } - if (sectlist[sn].ptr -> codesize == 0) - { - // don't generate output for a zero size section - continue; - } - // write a preamble - buf[0] = 0x00; - buf[1] = sectlist[sn].ptr -> codesize >> 8; - buf[2] = sectlist[sn].ptr -> codesize & 0xff; - buf[3] = sectlist[sn].ptr -> loadaddress >> 8; - buf[4] = sectlist[sn].ptr -> loadaddress & 0xff; - writebytes(buf, 1, 5, of); - writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); - } - // write a postamble - buf[0] = 0xff; - buf[1] = 0x00; - buf[2] = 0x00; - buf[3] = linkscript.execaddr >> 8; - buf[4] = linkscript.execaddr & 0xff; - writebytes(buf, 1, 5, of); -} - -void do_output_raw(FILE *of) -{ - int nskips = 0; // used to output blanks for BSS inline - int sn; - - for (sn = 0; sn < nsects; sn++) - { - if (sectlist[sn].ptr -> flags & SECTION_BSS) - { - // no output for a BSS section - nskips += sectlist[sn].ptr -> codesize; - continue; - } - while (nskips > 0) - { - // the "" is not an error - it turns into a single NUL byte! - writebytes("", 1, 1, of); - nskips--; - } - writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); - } -}
--- a/lwlink/branches/1.0/src/readfiles.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,304 +0,0 @@ -/* -readfiles.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Reads input files - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <argp.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" -#include "util.h" - -void read_lwobj16v0(fileinfo_t *fn); - -/* -The logic of reading the entire file into memory is simple. All the symbol -names in the file are NUL terminated strings and can be used directly without -making additional copies. -*/ -void read_files(void) -{ - int i; - long size; - FILE *f; - long bread; - for (i = 0; i < ninputfiles; i++) - { - f = fopen(inputfiles[i] -> filename, "rb"); - if (!f) - { - fprintf(stderr, "Can't open file %s:", inputfiles[i] -> filename); - perror(""); - exit(1); - } - fseek(f, 0, SEEK_END); - size = ftell(f); - rewind(f); - - inputfiles[i] -> filedata = lw_malloc(size); - inputfiles[i] -> filesize = size; - - bread = fread(inputfiles[i] -> filedata, 1, size, f); - if (bread < size) - { - fprintf(stderr, "Short read on file %s (%ld/%ld):", inputfiles[i] -> filename, bread, size); - perror(""); - exit(1); - } - - fclose(f); - - if (!memcmp(inputfiles[i] -> filedata, "LWOBJ16", 8)) - { - // read v0 LWOBJ16 file - read_lwobj16v0(inputfiles[i]); - } - else - { - fprintf(stderr, "%s: unknown file format\n", inputfiles[i] -> filename); - exit(1); - } - } -} - -// this macro is used to bail out if we run off the end of the file data -// while parsing - it keeps the code below cleaner -#define NEXTBYTE() do { cc++; if (cc > fn -> filesize) { fprintf(stderr, "%s: invalid file format\n", fn -> filename); exit(1); } } while (0) -// this macro is used to refer to the current byte in the stream -#define CURBYTE() (fn -> filedata[cc < fn -> filesize ? cc : fn -> filesize - 1]) -// this one will leave the input pointer past the trailing NUL -#define CURSTR() read_lwobj16v0_str(&cc, fn) -unsigned char *read_lwobj16v0_str(long *cc1, fileinfo_t *fn) -{ - int cc = *cc1; - unsigned char *fp; - fp = &CURBYTE(); - while (CURBYTE()) - NEXTBYTE(); - NEXTBYTE(); - *cc1 = cc; - return fp; -} -// the function below can be switched to dealing with data coming from a -// source other than an in-memory byte pool by adjusting the input data -// in "fn" and the above two macros -void read_lwobj16v0(fileinfo_t *fn) -{ - unsigned char *fp; - long cc; - section_t *s; - int val; - symtab_t *se; - - // start reading *after* the magic number - cc = 8; - - // init data - fn -> sections = NULL; - fn -> nsections = 0; - - while (1) - { -// NEXTBYTE(); - // bail out if no more sections - if (!(CURBYTE())) - break; - - fp = CURSTR(); - - // we now have a section name in fp - // create new section entry - fn -> sections = lw_realloc(fn -> sections, sizeof(section_t) * (fn -> nsections + 1)); - s = &(fn -> sections[fn -> nsections]); - fn -> nsections += 1; - - s -> localsyms = NULL; - s -> flags = 0; - s -> codesize = 0; - s -> name = fp; - s -> loadaddress = 0; - s -> localsyms = NULL; - s -> exportedsyms = NULL; - s -> incompletes = NULL; - s -> processed = 0; - s -> file = fn; - - // read flags - while (CURBYTE()) - { - switch (CURBYTE()) - { - case 0x01: - s -> flags |= SECTION_BSS; - break; - - default: - fprintf(stderr, "%s (%s): unrecognized section flag %02X\n", fn -> filename, s -> name, (int)(CURBYTE())); - exit(1); - } - NEXTBYTE(); - } - // skip NUL terminating flags - NEXTBYTE(); - - // now parse the local symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - // create symbol table entry - se = lw_malloc(sizeof(symtab_t)); - se -> next = s -> localsyms; - s -> localsyms = se; - se -> sym = fp; - se -> offset = val; - } - // skip terminating NUL - NEXTBYTE(); - - // now parse the exported symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - // create symbol table entry - se = lw_malloc(sizeof(symtab_t)); - se -> next = s -> exportedsyms; - s -> exportedsyms = se; - se -> sym = fp; - se -> offset = val; - } - // skip terminating NUL - NEXTBYTE(); - - // now parse the incomplete references and make a list of - // external references that need resolution - while (CURBYTE()) - { - reloc_t *rp; - lw_expr_term_t *term; - - // we have a reference - rp = lw_malloc(sizeof(reloc_t)); - rp -> next = s -> incompletes; - s -> incompletes = rp; - rp -> offset = 0; - rp -> expr = lw_expr_stack_create(); - - // parse the expression - while (CURBYTE()) - { - int tt = CURBYTE(); - NEXTBYTE(); - switch (tt) - { - case 0x01: - // 16 bit integer - tt = CURBYTE() << 8; - NEXTBYTE(); - tt |= CURBYTE(); - NEXTBYTE(); - // normalize for negatives... - if (tt > 0x7fff) - tt -= 0x10000; - term = lw_expr_term_create_int(tt); - break; - - case 0x02: - // external symbol reference - term = lw_expr_term_create_sym(CURSTR(), 0); - break; - - case 0x03: - // internal symbol reference - term = lw_expr_term_create_sym(CURSTR(), 1); - break; - - case 0x04: - // operator - term = lw_expr_term_create_oper(CURBYTE()); - NEXTBYTE(); - break; - - case 0x05: - // section base reference (NULL internal reference is - // the section base address - term = lw_expr_term_create_sym(NULL, 1); - break; - - default: - fprintf(stderr, "%s (%s): bad relocation expression\n", fn -> filename, s -> name); - exit(1); - } - lw_expr_stack_push(rp -> expr, term); - lw_expr_term_free(term); - } - // skip the NUL - NEXTBYTE(); - - // fetch the offset - rp -> offset = CURBYTE() << 8; - NEXTBYTE(); - rp -> offset |= CURBYTE() & 0xff; - NEXTBYTE(); - } - // skip the NUL terminating the relocations - NEXTBYTE(); - - // now set code location and size and verify that the file - // contains data going to the end of the code (if !SECTION_BSS) - s -> codesize = CURBYTE() << 8; - NEXTBYTE(); - s -> codesize |= CURBYTE(); - NEXTBYTE(); - - s -> code = &(CURBYTE()); - - // skip the code if we're not in a BSS section - if (!(s -> flags & SECTION_BSS)) - { - int i; - for (i = 0; i < s -> codesize; i++) - NEXTBYTE(); - } - } -}
--- a/lwlink/branches/1.0/src/script.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,257 +0,0 @@ -/* -script.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Read and parse linker scripts -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "lwlink.h" -#include "util.h" - -// the built-in DECB target linker script -static char *decb_script = - "section init load 2000\n" - "section code\n" - "section *,!bss\n" - "section *,bss\n" - "entry 2000\n" - ; - -// the built-in RAW target linker script -static char *raw_script = - "section init load 0000\n" - "section code\n" - "section *,!bss\n" - "section *,bss\n" - ; - -// the "simple" script -static char *simple_script = - "section *,!bss\n" - "section *,bss\n" - ; - -linkscript_t linkscript = { 0, NULL, -1 }; - -void setup_script() -{ - char *script, *oscript; - long size; - - // read the file if needed - if (scriptfile) - { - FILE *f; - long bread; - - f = fopen(scriptfile, "rb"); - if (!f) - { - fprintf(stderr, "Can't open file %s:", scriptfile); - perror(""); - exit(1); - } - fseek(f, 0, SEEK_END); - size = ftell(f); - rewind(f); - - script = lw_malloc(size + 2); - - bread = fread(script, 1, size, f); - if (bread < size) - { - fprintf(stderr, "Short read on file %s (%ld/%ld):", scriptfile, bread, size); - perror(""); - exit(1); - } - fclose(f); - - script[size] = '\n'; - script[size + 1] = '\0'; - } - else - { - // fetch defaults based on output mode - switch (outformat) - { - case OUTPUT_RAW: - script = raw_script; - break; - - case OUTPUT_DECB: - script = decb_script; - break; - - default: - script = simple_script; - break; - } - - size = strlen(script); - } - - oscript = script; - // now parse the script file - while (*script) - { - char *ptr, *ptr2, *line; - - for (ptr = script; *ptr && *ptr != '\n' && *ptr != '\r'; ptr++) - /* do nothing */ ; - - line = lw_malloc(ptr - script + 1); - memcpy(line, script, ptr - script); - line[ptr - script] = '\0'; - - // skip line terms - for (script = ptr + 1; *script == '\n' || *script == '\r'; script++) - /* do nothing */ ; - - // ignore leading whitespace - for (ptr = line; *ptr && isspace(*ptr); ptr++) - /* do nothing */ ; - - // ignore blank lines - if (!*ptr) - continue; - - for (ptr = line; *ptr && !isspace(*ptr); ptr++) - /* do nothing */ ; - - // now ptr points to the char past the first word - // NUL it out - if (*ptr) - *ptr++ = '\0'; - - // skip spaces after the first word - for ( ; *ptr && isspace(*ptr); ptr++) - /* do nothing */ ; - - if (!strcmp(line, "pad")) - { - // padding - // parse the hex number and stow it - linkscript.padsize = strtol(ptr, NULL, 16); - if (linkscript.padsize < 0) - linkscript.padsize = 0; - } - else if (!strcmp(line, "entry")) - { - int eaddr; - - eaddr = strtol(ptr, &ptr2, 16); - if (*ptr2) - { - linkscript.execaddr = -1; - linkscript.execsym = lw_strdup(ptr); - } - else - { - linkscript.execaddr = eaddr; - linkscript.execsym = NULL; - } - } - else if (!strcmp(line, "section")) - { - // section - // parse out the section name and flags - for (ptr2 = ptr; *ptr2 && !isspace(*ptr2); ptr2++) - /* do nothing */ ; - - if (*ptr2) - *ptr2++ = '\0'; - - while (*ptr2 && isspace(*ptr2)) - ptr2++; - - // ptr now points to the section name and flags and ptr2 - // to the first non-space character following - - // then look for "load <addr>" clause - if (*ptr2) - { - if (!strncmp(ptr2, "load", 4)) - { - ptr2 += 4; - while (*ptr2 && isspace(*ptr2)) - ptr2++; - - } - else - { - fprintf(stderr, "%s: bad script\n", scriptfile); - exit(1); - } - } - - // now ptr2 points to the load address if there is one - // or NUL if not - linkscript.lines = lw_realloc(linkscript.lines, sizeof(struct scriptline_s) * (linkscript.nlines + 1)); - - linkscript.lines[linkscript.nlines].noflags = 0; - linkscript.lines[linkscript.nlines].yesflags = 0; - if (*ptr2) - linkscript.lines[linkscript.nlines].loadat = strtol(ptr2, NULL, 16); - else - linkscript.lines[linkscript.nlines].loadat = -1; - for (ptr2 = ptr; *ptr2 && *ptr2 != ','; ptr2++) - /* do nothing */ ; - if (*ptr2) - { - *ptr2++ = '\0'; - if (!strcmp(ptr2, "!bss")) - { - linkscript.lines[linkscript.nlines].noflags = SECTION_BSS; - } - else if (!strcmp(ptr2, "bss")) - { - linkscript.lines[linkscript.nlines].yesflags = SECTION_BSS; - } - else - { - fprintf(stderr, "%s: bad script\n", scriptfile); - exit(1); - } - } - if (ptr[0] == '*' && ptr[1] == '\0') - linkscript.lines[linkscript.nlines].sectname = NULL; - else - linkscript.lines[linkscript.nlines].sectname = lw_strdup(ptr); - linkscript.nlines++; - } - else - { - fprintf(stderr, "%s: bad script\n", scriptfile); - exit(1); - } - lw_free(line); - } - - if (scriptfile) - lw_free(oscript); -}
--- a/lwlink/branches/1.0/src/util.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,87 +0,0 @@ -/* -util.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -Utility functions -*/ - -#define __util_c_seen__ - -#include <malloc.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "util.h" - -void *lw_malloc(int size) -{ - void *ptr; - - ptr = malloc(size); - if (!ptr) - { - // bail out; memory allocation error - fprintf(stderr, "lw_malloc(): Memory allocation error\n"); - exit(1); - } - return ptr; -} - -void *lw_realloc(void *optr, int size) -{ - void *ptr; - - if (size == 0) - { - lw_free(optr); - return; - } - - ptr = realloc(optr, size); - if (!ptr) - { - fprintf(stderr, "lw_realloc(): memory allocation error\n"); - exit(1); - } -} - -void lw_free(void *ptr) -{ - if (ptr) - free(ptr); -} - -char *lw_strdup(const char *s) -{ - char *d; - - if (!s) - return NULL; - - d = strdup(s); - if (!d) - { - fprintf(stderr, "lw_strdup(): memory allocation error\n"); - exit(1); - } - - return d; -}
--- a/lwlink/branches/1.0/src/util.h Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,44 +0,0 @@ -/* -util.h -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -Utility functions -*/ - -#ifndef __util_h_seen__ -#define __util_h_seen__ - -#ifndef __util_c_seen__ -#define __util_E__ extern -#else -#define __util_E__ -#endif - -// allocate memory -__util_E__ void *lw_malloc(int size); -__util_E__ void lw_free(void *ptr); -__util_E__ void *lw_realloc(void *optr, int size); - -// string stuff -__util_E__ char *lw_strdup(const char *s); - -#undef __util_E__ - -#endif // __util_h_seen__
--- a/lwlink/tags/1.0/COPYING Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,674 +0,0 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 - - Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. By contrast, -the GNU General Public License is intended to guarantee your freedom to -share and change all versions of a program--to make sure it remains free -software for all its users. We, the Free Software Foundation, use the -GNU General Public License for most of our software; it applies also to -any other work released this way by its authors. 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--- a/lwlink/tags/1.0/INSTALL Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,237 +0,0 @@ -Installation Instructions -************************* - -Copyright (C) 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2004, 2005, -2006, 2007 Free Software Foundation, Inc. - -This file is free documentation; the Free Software Foundation gives -unlimited permission to copy, distribute and modify it. - -Basic Installation -================== - -Briefly, the shell commands `./configure; make; make install' should -configure, build, and install this package. The following -more-detailed instructions are generic; see the `README' file for -instructions specific to this package. - - The `configure' shell script attempts to guess correct values for -various system-dependent variables used during compilation. It uses -those values to create a `Makefile' in each directory of the package. -It may also create one or more `.h' files containing system-dependent -definitions. Finally, it creates a shell script `config.status' that -you can run in the future to recreate the current configuration, and a -file `config.log' containing compiler output (useful mainly for -debugging `configure'). - - It can also use an optional file (typically called `config.cache' -and enabled with `--cache-file=config.cache' or simply `-C') that saves -the results of its tests to speed up reconfiguring. Caching is -disabled by default to prevent problems with accidental use of stale -cache files. - - If you need to do unusual things to compile the package, please try -to figure out how `configure' could check whether to do them, and mail -diffs or instructions to the address given in the `README' so they can -be considered for the next release. If you are using the cache, and at -some point `config.cache' contains results you don't want to keep, you -may remove or edit it. - - The file `configure.ac' (or `configure.in') is used to create -`configure' by a program called `autoconf'. You need `configure.ac' if -you want to change it or regenerate `configure' using a newer version -of `autoconf'. - -The simplest way to compile this package is: - - 1. `cd' to the directory containing the package's source code and type - `./configure' to configure the package for your system. - - Running `configure' might take a while. While running, it prints - some messages telling which features it is checking for. - - 2. Type `make' to compile the package. - - 3. Optionally, type `make check' to run any self-tests that come with - the package. - - 4. Type `make install' to install the programs and any data files and - documentation. - - 5. You can remove the program binaries and object files from the - source code directory by typing `make clean'. To also remove the - files that `configure' created (so you can compile the package for - a different kind of computer), type `make distclean'. There is - also a `make maintainer-clean' target, but that is intended mainly - for the package's developers. If you use it, you may have to get - all sorts of other programs in order to regenerate files that came - with the distribution. - - 6. Often, you can also type `make uninstall' to remove the installed - files again. - -Compilers and Options -===================== - -Some systems require unusual options for compilation or linking that the -`configure' script does not know about. Run `./configure --help' for -details on some of the pertinent environment variables. - - You can give `configure' initial values for configuration parameters -by setting variables in the command line or in the environment. Here -is an example: - - ./configure CC=c99 CFLAGS=-g LIBS=-lposix - - *Note Defining Variables::, for more details. - -Compiling For Multiple Architectures -==================================== - -You can compile the package for more than one kind of computer at the -same time, by placing the object files for each architecture in their -own directory. To do this, you can use GNU `make'. `cd' to the -directory where you want the object files and executables to go and run -the `configure' script. `configure' automatically checks for the -source code in the directory that `configure' is in and in `..'. - - With a non-GNU `make', it is safer to compile the package for one -architecture at a time in the source code directory. After you have -installed the package for one architecture, use `make distclean' before -reconfiguring for another architecture. - -Installation Names -================== - -By default, `make install' installs the package's commands under -`/usr/local/bin', include files under `/usr/local/include', etc. You -can specify an installation prefix other than `/usr/local' by giving -`configure' the option `--prefix=PREFIX'. - - You can specify separate installation prefixes for -architecture-specific files and architecture-independent files. If you -pass the option `--exec-prefix=PREFIX' to `configure', the package uses -PREFIX as the prefix for installing programs and libraries. -Documentation and other data files still use the regular prefix. - - In addition, if you use an unusual directory layout you can give -options like `--bindir=DIR' to specify different values for particular -kinds of files. Run `configure --help' for a list of the directories -you can set and what kinds of files go in them. - - If the package supports it, you can cause programs to be installed -with an extra prefix or suffix on their names by giving `configure' the -option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. - -Optional Features -================= - -Some packages pay attention to `--enable-FEATURE' options to -`configure', where FEATURE indicates an optional part of the package. -They may also pay attention to `--with-PACKAGE' options, where PACKAGE -is something like `gnu-as' or `x' (for the X Window System). The -`README' should mention any `--enable-' and `--with-' options that the -package recognizes. - - For packages that use the X Window System, `configure' can usually -find the X include and library files automatically, but if it doesn't, -you can use the `configure' options `--x-includes=DIR' and -`--x-libraries=DIR' to specify their locations. - -Specifying the System Type -========================== - -There may be some features `configure' cannot figure out automatically, -but needs to determine by the type of machine the package will run on. -Usually, assuming the package is built to be run on the _same_ -architectures, `configure' can figure that out, but if it prints a -message saying it cannot guess the machine type, give it the -`--build=TYPE' option. TYPE can either be a short name for the system -type, such as `sun4', or a canonical name which has the form: - - CPU-COMPANY-SYSTEM - -where SYSTEM can have one of these forms: - - OS KERNEL-OS - - See the file `config.sub' for the possible values of each field. If -`config.sub' isn't included in this package, then this package doesn't -need to know the machine type. - - If you are _building_ compiler tools for cross-compiling, you should -use the option `--target=TYPE' to select the type of system they will -produce code for. - - If you want to _use_ a cross compiler, that generates code for a -platform different from the build platform, you should specify the -"host" platform (i.e., that on which the generated programs will -eventually be run) with `--host=TYPE'. - -Sharing Defaults -================ - -If you want to set default values for `configure' scripts to share, you -can create a site shell script called `config.site' that gives default -values for variables like `CC', `cache_file', and `prefix'. -`configure' looks for `PREFIX/share/config.site' if it exists, then -`PREFIX/etc/config.site' if it exists. Or, you can set the -`CONFIG_SITE' environment variable to the location of the site script. -A warning: not all `configure' scripts look for a site script. - -Defining Variables -================== - -Variables not defined in a site shell script can be set in the -environment passed to `configure'. However, some packages may run -configure again during the build, and the customized values of these -variables may be lost. In order to avoid this problem, you should set -them in the `configure' command line, using `VAR=value'. For example: - - ./configure CC=/usr/local2/bin/gcc - -causes the specified `gcc' to be used as the C compiler (unless it is -overridden in the site shell script). - -Unfortunately, this technique does not work for `CONFIG_SHELL' due to -an Autoconf bug. Until the bug is fixed you can use this workaround: - - CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash - -`configure' Invocation -====================== - -`configure' recognizes the following options to control how it operates. - -`--help' -`-h' - Print a summary of the options to `configure', and exit. - -`--version' -`-V' - Print the version of Autoconf used to generate the `configure' - script, and exit. - -`--cache-file=FILE' - Enable the cache: use and save the results of the tests in FILE, - traditionally `config.cache'. FILE defaults to `/dev/null' to - disable caching. - -`--config-cache' -`-C' - Alias for `--cache-file=config.cache'. - -`--quiet' -`--silent' -`-q' - Do not print messages saying which checks are being made. To - suppress all normal output, redirect it to `/dev/null' (any error - messages will still be shown). - -`--srcdir=DIR' - Look for the package's source code in directory DIR. Usually - `configure' can determine that directory automatically. - -`configure' also accepts some other, not widely useful, options. Run -`configure --help' for more details. -
--- a/lwlink/tags/1.0/Makefile.am Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,2 +0,0 @@ -SUBDIRS = src -DIST_SUBDIRS = doc src
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--- a/lwlink/tags/1.0/README.MAINT Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,39 +0,0 @@ -This file is intended for source package maintainers/distributors. - -Before a release is made, a branch for that release must be made. Within -that branch, all files that will be distributed with the particular release -must be generated and added to the repository on that branch. Once the -release is deemed stable and ready for release, the release tag should -be generated from the head of that particular branch. Thus all release -series will have the autotool generated files in the repository. - -Any branch not directly intended to be a release need not include the -autotool generated files. - -The trunk development stream must not include the autotool generated files -as these are likely to change rapidly and it can cause a great deal of -confusion for little gain. - -By including the generated files in the release branches, it is possible -to replicate any problems users of the package may have, including if it -is due to problems with the autotools themselves. - - -Naming of branches and tags should conform to the following guidlines. - -1. any branch leading to a release series must be named as the base revision -of the series. Thus, for a 1.0 release, the branch is called 1.0 and will -contain the results for a 1.0 release, a 1.0.1 release, and so on. If a -sub-release will occur, say under 1.0.1, then a branch named "1.0.1" would -be created and then releases such as 1.0.1.1 would be created. This should -be avoided if at all possible. - -2. any tag for a specific release version will be named as the release. So -for a 1.0 release, the name would be "1.0". For version 1.0.1.1, the name -would be "1.0.1.1". - -3. branches not associated with a release stream - say for feature development -or what have you should be named sensibly and should be removed when no longer -needed. They must not appear to be version numbers. - -4. tags not specifying a release must not look like version numbers
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--- a/lwlink/tags/1.0/doc/lwlink.txt Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,51 +0,0 @@ -This is the companion linker to LWASM. It reads object files generated by -LWASM and combines them into an actual binary. - -During linking, each file is read into memory. A list of externally -referenced symbols is made along with where these symbols are referenced. -Each external reference is checked against all previously loaded files (in -order of loading) and if a match is found, a note of that fact is made and a -link between the previously loaded file and the current reference. - -Once all files are loaded, the symbol table is checked for any symbols which -are still unresolved. If any are found, the linking process complains and -bails out. - -Once all the object files have been read, the linker follows a -pre-determined script for the specified target or a script supplied by the -user to lay out the binary. The instructions from the script are followed -blindly as it is assumed the user knows what he is doing. - -For each defined section, the linker begins constructing the section data by -resolving each instance of that section in the order it was encountered. All -symbols defined by that section (local or exported) are assigned addresses. -The exact offset into the final section data is recorded for any incomplete -references in that section. All section base address references are resolved -to actual addresses at this stage. - -Once all sections have been laid out and addresses assigned to all symbols, -all incomplete references are resolved and the resulting value placed into -the appropriate data stream. If any references cannot be resolved at this -stage, the linker will complain and bail out. - -Once all sections, symbols, and incomplete references have been resolved, -the binary will output as appropriate for the specified target. - -See the file "scripts.txt" for information about linker scripts and the -restrictions based on the output target. - -The following output targets are supported: - -Raw: this is a raw binary with no header information, etc. Suitable for ROM -images, etc. By default, the raw target starts the binary at address 0, puts -any section named "init" first, then "code", then all other non-bss -sections, then all bss sections. Note that any "bss" type section that -exists anywhere but at the end of the binary (i.e. is between or before one -or more non-bss sections) will be included as a series of NUL bytes. - -DECB: this creates a LOADM style binary according to the linker script. By -default, this target places the sections in the same order as the raw target -but implements a load address of $2000. bss sections will not be included in -the actual output. If a bss section appears between two non-bss sections, a -new output block will be created in the output file. -
--- a/lwlink/tags/1.0/doc/scripts.txt Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,63 +0,0 @@ -LWLINK linker scripts - -A linker script is used to instruct the linker about how to assemble the -various sections into a completed binary. It consists of a series of -directives which are considered in the order they are encountered. Any -section not referenced by a directive is assumed to be loaded after the -final section explicitly referenced. - -The sections will appear in the resulting binary in the order they are -specified in the script file. - -If a referenced section is not found, the linker will behave as though the -section did exist but had a zero size, no relocations, and no exports. - -A section may only be referenced once. Any subsequent references will have -no effect. - -All numbers are hexadecimal. - -section <name> load <addr> - -This causes the section <name> to load at <addr>. For raw target, only one -"load at" entry is allowed for non-bss sections and it must be the first -one. For raw targets, it affects the addresses the linker assigns to symbols -but has no other affect on the output. bss sections may all have separate -load addresses but since they will not appear in the binary anyway, this is -okay. - -For the DECB target, each "load" entry will cause a new "block" to be -output to the binary which will contain the load address. It is legal for -sections to overlap in this manner - the linker assumes the loader will sort -everything out. - -section <name> - -This will cause the section <name> to load after the previously listed -section. - -exec <addr or sym> - -This will cause the execution address (entry point) to be the address -specified (in hex) *or* the specified symbol name. The symbol name must -match a symbol that is exported by one of the object files being linked. -This has no effect for targets that do not encode the entry point into the -resulting file. If not specified, the entry point is assumed to be address 0 -which is probably not what you want. The default link scripts for targets -that support this directive automatically starts at the beginning of the -first section (usually "init" or "code") that is emitted in the binary. - -pad <size> - -This will cause the output file to be padded with NUL bytes to be exactly -<size> bytes in length. This only makes sense for a raw target. - - -If <name> is "*", then any section not already matched by the script will be -matched. For format *,<flags> can be used to select sections which have -particular flags set (or not set). For instance: - -*,!bss This would match all sections that do not have the bss flag set -*,bss this would match all sections that do have the bss flag set - -
--- a/lwlink/tags/1.0/install-sh Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,519 +0,0 @@ -#!/bin/sh -# install - install a program, script, or datafile - -scriptversion=2006-12-25.00 - -# This originates from X11R5 (mit/util/scripts/install.sh), which was -# later released in X11R6 (xc/config/util/install.sh) with the -# following copyright and license. -# -# Copyright (C) 1994 X Consortium -# -# Permission is hereby granted, free of charge, to any person obtaining a copy -# of this software and associated documentation files (the "Software"), to -# deal in the Software without restriction, including without limitation the -# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or -# sell copies of the Software, and to permit persons to whom the Software is -# furnished to do so, subject to the following conditions: -# -# The above copyright notice and this permission notice shall be included in -# all copies or substantial portions of the Software. -# -# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN -# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- -# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. -# -# Except as contained in this notice, the name of the X Consortium shall not -# be used in advertising or otherwise to promote the sale, use or other deal- -# ings in this Software without prior written authorization from the X Consor- -# tium. -# -# -# FSF changes to this file are in the public domain. -# -# Calling this script install-sh is preferred over install.sh, to prevent -# `make' implicit rules from creating a file called install from it -# when there is no Makefile. -# -# This script is compatible with the BSD install script, but was written -# from scratch. - -nl=' -' -IFS=" "" $nl" - -# set DOITPROG to echo to test this script - -# Don't use :- since 4.3BSD and earlier shells don't like it. -doit=${DOITPROG-} -if test -z "$doit"; then - doit_exec=exec -else - doit_exec=$doit -fi - -# Put in absolute file names if you don't have them in your path; -# or use environment vars. - -chgrpprog=${CHGRPPROG-chgrp} -chmodprog=${CHMODPROG-chmod} -chownprog=${CHOWNPROG-chown} -cmpprog=${CMPPROG-cmp} -cpprog=${CPPROG-cp} -mkdirprog=${MKDIRPROG-mkdir} -mvprog=${MVPROG-mv} -rmprog=${RMPROG-rm} -stripprog=${STRIPPROG-strip} - -posix_glob='?' -initialize_posix_glob=' - test "$posix_glob" != "?" || { - if (set -f) 2>/dev/null; then - posix_glob= - else - posix_glob=: - fi - } -' - -posix_mkdir= - -# Desired mode of installed file. -mode=0755 - -chgrpcmd= -chmodcmd=$chmodprog -chowncmd= -mvcmd=$mvprog -rmcmd="$rmprog -f" -stripcmd= - -src= -dst= -dir_arg= -dst_arg= - -copy_on_change=false -no_target_directory= - -usage="\ -Usage: $0 [OPTION]... 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--- a/lwlink/tags/1.0/missing Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,367 +0,0 @@ -#! /bin/sh -# Common stub for a few missing GNU programs while installing. - -scriptversion=2006-05-10.23 - -# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006 -# Free Software Foundation, Inc. -# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996. - -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2, or (at your option) -# any later version. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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--- a/lwlink/tags/1.0/src/expr.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,356 +0,0 @@ -/* -expr.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -This file contains the actual expression evaluator -*/ - -#define __expr_c_seen__ - -#include <ctype.h> -#include <stdlib.h> -#include <string.h> - -#include "expr.h" -#include "util.h" - -lw_expr_stack_t *lw_expr_stack_create(void) -{ - lw_expr_stack_t *s; - - s = lw_malloc(sizeof(lw_expr_stack_t)); - s -> head = NULL; - s -> tail = NULL; - return s; -} - -void lw_expr_stack_free(lw_expr_stack_t *s) -{ - while (s -> head) - { - s -> tail = s -> head; - s -> head = s -> head -> next; - lw_expr_term_free(s -> tail -> term); - lw_free(s -> tail); - } - lw_free(s); -} - -void lw_expr_term_free(lw_expr_term_t *t) -{ - if (t) - { - if (t -> term_type == LW_TERM_SYM) - lw_free(t -> symbol); - lw_free(t); - } -} - -lw_expr_term_t *lw_expr_term_create_oper(int oper) -{ - lw_expr_term_t *t; - - t = lw_malloc(sizeof(lw_expr_term_t)); - t -> term_type = LW_TERM_OPER; - t -> value = oper; - return t; -} - -lw_expr_term_t *lw_expr_term_create_int(int val) -{ - lw_expr_term_t *t; - - t = lw_malloc(sizeof(lw_expr_term_t)); - t -> term_type = LW_TERM_INT; - t -> value = val; - return t; -} - -lw_expr_term_t *lw_expr_term_create_sym(char *sym, int symtype) -{ - lw_expr_term_t *t; - - t = lw_malloc(sizeof(lw_expr_term_t)); - t -> term_type = LW_TERM_SYM; - t -> symbol = lw_strdup(sym); - t -> value = symtype; - return t; -} - -lw_expr_term_t *lw_expr_term_dup(lw_expr_term_t *t) -{ - switch (t -> term_type) - { - case LW_TERM_INT: - return lw_expr_term_create_int(t -> value); - - case LW_TERM_OPER: - return lw_expr_term_create_oper(t -> value); - - case LW_TERM_SYM: - return lw_expr_term_create_sym(t -> symbol, t -> value); - - default: - exit(1); - } -// can't get here -} - -void lw_expr_stack_push(lw_expr_stack_t *s, lw_expr_term_t *t) -{ - lw_expr_stack_node_t *n; - - if (!s) - { - exit(1); - } - - n = lw_malloc(sizeof(lw_expr_stack_node_t)); - n -> next = NULL; - n -> prev = s -> tail; - n -> term = lw_expr_term_dup(t); - - if (s -> head) - { - s -> tail -> next = n; - s -> tail = n; - } - else - { - s -> head = n; - s -> tail = n; - } -} - -lw_expr_term_t *lw_expr_stack_pop(lw_expr_stack_t *s) -{ - lw_expr_term_t *t; - lw_expr_stack_node_t *n; - - if (!(s -> tail)) - return NULL; - - n = s -> tail; - s -> tail = n -> prev; - if (!(n -> prev)) - { - s -> head = NULL; - } - - t = n -> term; - n -> term = NULL; - - lw_free(n); - - return t; -} - -/* -take an expression stack s and scan for operations that can be completed - -return -1 on error, 0 on no error - -possible errors are: division by zero or unknown operator - -theory of operation: - -scan the stack for an operator which has two constants preceding it (binary) -or 1 constant preceding it (unary) and if found, perform the calculation -and replace the operator and its operands with the result - -repeat the scan until no futher simplications are found or if there are no -further operators or only a single term remains - -*/ -int lw_expr_reval(lw_expr_stack_t *s, lw_expr_stack_t *(*sfunc)(char *sym, int stype, void *state), void *state) -{ - lw_expr_stack_node_t *n, *n2; - lw_expr_stack_t *ss; - int c; - -next_iter_sym: - // resolve symbols - // symbols that do not resolve to an expression are left alone - for (c = 0, n = s -> head; n; n = n -> next) - { - if (n -> term -> term_type == LW_TERM_SYM) - { - ss = sfunc(n -> term -> symbol, n -> term -> value, state); - if (ss) - { - c++; - // splice in the result stack - if (n -> prev) - { - n -> prev -> next = ss -> head; - } - else - { - s -> head = ss -> head; - } - ss -> head -> prev = n -> prev; - ss -> tail -> next = n -> next; - if (n -> next) - { - n -> next -> prev = ss -> tail; - } - else - { - s -> tail = ss -> tail; - } - lw_expr_term_free(n -> term); - lw_free(n); - n = ss -> tail; - - ss -> head = NULL; - ss -> tail = NULL; - lw_expr_stack_free(ss); - } - } - } - if (c) - goto next_iter_sym; - -next_iter: - // a single term - if (s -> head == s -> tail) - return 0; - - // search for an operator - for (n = s -> head; n; n = n -> next) - { - if (n -> term -> term_type == LW_TERM_OPER) - { - if (n -> term -> value == LW_OPER_NEG - || n -> term -> value == LW_OPER_COM - ) - { - // unary operator - if (n -> prev && n -> prev -> term -> term_type == LW_TERM_INT) - { - // a unary operator we can resolve - // we do the op then remove the term "n" is pointing at - if (n -> term -> value == LW_OPER_NEG) - { - n -> prev -> term -> value = -(n -> prev -> term -> value); - } - else if (n -> term -> value == LW_OPER_COM) - { - n -> prev -> term -> value = ~(n -> prev -> term -> value); - } - n -> prev -> next = n -> next; - if (n -> next) - n -> next -> prev = n -> prev; - else - s -> tail = n -> prev; - - lw_expr_term_free(n -> term); - lw_free(n); - break; - } - } - else - { - // binary operator - if (n -> prev && n -> prev -> prev && n -> prev -> term -> term_type == LW_TERM_INT && n -> prev -> prev -> term -> term_type == LW_TERM_INT) - { - // a binary operator we can resolve - switch (n -> term -> value) - { - case LW_OPER_PLUS: - n -> prev -> prev -> term -> value += n -> prev -> term -> value; - break; - - case LW_OPER_MINUS: - n -> prev -> prev -> term -> value -= n -> prev -> term -> value; - break; - - case LW_OPER_TIMES: - n -> prev -> prev -> term -> value *= n -> prev -> term -> value; - break; - - case LW_OPER_DIVIDE: - if (n -> prev -> term -> value == 0) - return -1; - n -> prev -> prev -> term -> value /= n -> prev -> term -> value; - break; - - case LW_OPER_MOD: - if (n -> prev -> term -> value == 0) - return -1; - n -> prev -> prev -> term -> value %= n -> prev -> term -> value; - break; - - case LW_OPER_INTDIV: - if (n -> prev -> term -> value == 0) - return -1; - n -> prev -> prev -> term -> value /= n -> prev -> term -> value; - break; - - case LW_OPER_BWAND: - n -> prev -> prev -> term -> value &= n -> prev -> term -> value; - break; - - case LW_OPER_BWOR: - n -> prev -> prev -> term -> value |= n -> prev -> term -> value; - break; - - case LW_OPER_BWXOR: - n -> prev -> prev -> term -> value ^= n -> prev -> term -> value; - break; - - case LW_OPER_AND: - n -> prev -> prev -> term -> value = (n -> prev -> term -> value && n -> prev -> prev -> term -> value) ? 1 : 0; - break; - - case LW_OPER_OR: - n -> prev -> prev -> term -> value = (n -> prev -> term -> value || n -> prev -> prev -> term -> value) ? 1 : 0; - break; - - default: - // return error if unknown operator! - return -1; - } - - // now remove the two unneeded entries from the stack - n -> prev -> prev -> next = n -> next; - if (n -> next) - n -> next -> prev = n -> prev -> prev; - else - s -> tail = n -> prev -> prev; - - lw_expr_term_free(n -> term); - lw_expr_term_free(n -> prev -> term); - lw_free(n -> prev); - lw_free(n); - break; - } - } - } - } - // note for the terminally confused about dynamic memory and pointers: - // n will not be NULL even after the lw_free calls above so - // this test will still work (n will be a dangling pointer) - // (n will only be NULL if we didn't find any operators to simplify) - if (n) - goto next_iter; - - return 0; -}
--- a/lwlink/tags/1.0/src/expr.h Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,107 +0,0 @@ -/* -expr.h -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -Definitions for expression evaluator -*/ - -#ifndef __expr_h_seen__ -#define __expr_h_seen__ - -#ifndef __expr_c_seen__ -#define __expr_E__ extern -#else -#define __expr_E__ -#endif - -// term types -#define LW_TERM_NONE 0 -#define LW_TERM_OPER 1 // an operator -#define LW_TERM_INT 2 // 32 bit signed integer -#define LW_TERM_SYM 3 // symbol reference - -// operator types -#define LW_OPER_NONE 0 -#define LW_OPER_PLUS 1 // + -#define LW_OPER_MINUS 2 // - -#define LW_OPER_TIMES 3 // * -#define LW_OPER_DIVIDE 4 // / -#define LW_OPER_MOD 5 // % -#define LW_OPER_INTDIV 6 // \ (don't end line with \) -#define LW_OPER_BWAND 7 // bitwise AND -#define LW_OPER_BWOR 8 // bitwise OR -#define LW_OPER_BWXOR 9 // bitwise XOR -#define LW_OPER_AND 10 // boolean AND -#define LW_OPER_OR 11 // boolean OR -#define LW_OPER_NEG 12 // - unary negation (2's complement) -#define LW_OPER_COM 13 // ^ unary 1's complement - - -// term structure -typedef struct lw_expr_term_s -{ - int term_type; // type of term (see above) - char *symbol; // name of a symbol - int value; // value of the term (int) or operator number (OPER) -} lw_expr_term_t; - -// type for an expression evaluation stack -typedef struct lw_expr_stack_node_s lw_expr_stack_node_t; -struct lw_expr_stack_node_s -{ - lw_expr_term_t *term; - lw_expr_stack_node_t *prev; - lw_expr_stack_node_t *next; -}; - -typedef struct lw_expr_stack_s -{ - lw_expr_stack_node_t *head; - lw_expr_stack_node_t *tail; -} lw_expr_stack_t; - -__expr_E__ void lw_expr_term_free(lw_expr_term_t *t); -__expr_E__ lw_expr_term_t *lw_expr_term_create_oper(int oper); -__expr_E__ lw_expr_term_t *lw_expr_term_create_sym(char *sym, int symtype); -__expr_E__ lw_expr_term_t *lw_expr_term_create_int(int val); -__expr_E__ lw_expr_term_t *lw_expr_term_dup(lw_expr_term_t *t); - -__expr_E__ void lw_expr_stack_free(lw_expr_stack_t *s); -__expr_E__ lw_expr_stack_t *lw_expr_stack_create(void); - -__expr_E__ void lw_expr_stack_push(lw_expr_stack_t *s, lw_expr_term_t *t); -__expr_E__ lw_expr_term_t *lw_expr_stack_pop(lw_expr_stack_t *s); - -// simplify expression -__expr_E__ int lw_expr_reval(lw_expr_stack_t *s, lw_expr_stack_t *(*sfunc)(char *sym, int symtype, void *state), void *state); - -// useful macros -// is the expression "simple" (one term)? -#define lw_expr_is_simple(s) ((s) -> head == (s) -> tail) - -// is the expression constant? -#define lw_expr_is_constant(s) (lw_expr_is_simple(s) && (!((s) -> head) || (s) -> head -> term -> term_type == LW_TERM_INT)) - -// get the constant value of an expression or 0 if not constant -#define lw_expr_get_value(s) (lw_expr_is_constant(s) ? ((s) -> head ? (s) -> head -> term -> value : 0) : 0) - -#undef __expr_E__ - -#endif // __expr_h_seen__
--- a/lwlink/tags/1.0/src/link.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,265 +0,0 @@ -/* -link.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Resolve section and symbol addresses; handle incomplete references -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> -#include <stdlib.h> - -#include "expr.h" -#include "lwlink.h" -#include "util.h" - -struct section_list *sectlist = NULL; -int nsects = 0; - -// work out section load order and resolve base addresses for each section -// make a list of sections to load in order -void resolve_sections(void) -{ - int laddr = 0; - int ln, sn, fn; - - for (ln = 0; ln < linkscript.nlines; ln++) - { -// printf("Linker script line %d: '%s', %04X, %d, %d\n", ln, linkscript.lines[ln].sectname, linkscript.lines[ln].loadat, linkscript.lines[ln].yesflags, linkscript.lines[ln].noflags); - if (linkscript.lines[ln].sectname) - { - int f = 0; - // named section - // look for all instances of a section by the specified name - // and resolve base addresses and add to the list - for (fn = 0; fn < ninputfiles; fn++) - { - for (sn = 0; sn < inputfiles[fn] -> nsections; sn++) - { -// printf(" Considering %s:%s\n", inputfiles[fn]->filename, inputfiles[fn]->sections[sn].name); - if (!strcmp(linkscript.lines[ln].sectname, inputfiles[fn] -> sections[sn].name)) - { - // we have a match - sectlist = lw_realloc(sectlist, sizeof(struct section_list) * (nsects + 1)); - sectlist[nsects].ptr = &(inputfiles[fn] -> sections[sn]); - - inputfiles[fn] -> sections[sn].processed = 1; - if (!f && linkscript.lines[ln].loadat >= 0) - { - f = 1; - sectlist[nsects].forceaddr = 1; - laddr = linkscript.lines[ln].loadat; - } - else - { - sectlist[nsects].forceaddr = 0; - } - inputfiles[fn] -> sections[sn].loadaddress = laddr; - laddr += inputfiles[fn] -> sections[sn].codesize; - nsects++; - } - } - } - } - else - { - // wildcard section - // look for all sections not yet processed that match flags - - int f = 0; - int fn0, sn0; - char *sname; - - // named section - // look for all instances of a section by the specified name - // and resolve base addresses and add to the list - for (fn0 = 0; fn0 < ninputfiles; fn0++) - { - for (sn0 = 0; sn0 < inputfiles[fn0] -> nsections; sn0++) - { - // ignore if the "no flags" bit says to - if (linkscript.lines[ln].noflags && (inputfiles[fn0] -> sections[sn0].flags & linkscript.lines[ln].noflags)) - continue; - // ignore unless the yes flags tell us not to - if (linkscript.lines[ln].yesflags && (inputfiles[fn0] -> sections[sn0].flags & linkscript.lines[ln].yesflags == 0)) - continue; - if (inputfiles[fn0] -> sections[sn0].processed == 0) - { - sname = inputfiles[fn0] -> sections[sn0].name; - for (fn = 0; fn < ninputfiles; fn++) - { - for (sn = 0; sn < inputfiles[fn] -> nsections; sn++) - { - if (!strcmp(sname, inputfiles[fn] -> sections[sn].name)) - { - // we have a match - sectlist = lw_realloc(sectlist, sizeof(struct section_list) * (nsects + 1)); - sectlist[nsects].ptr = &(inputfiles[fn] -> sections[sn]); - - inputfiles[fn] -> sections[sn].processed = 1; - if (!f && linkscript.lines[ln].loadat >= 0) - { - f = 1; - sectlist[nsects].forceaddr = 1; - laddr = linkscript.lines[ln].loadat; - } - else - { - sectlist[nsects].forceaddr = 0; - } - inputfiles[fn] -> sections[sn].loadaddress = laddr; - laddr += inputfiles[fn] -> sections[sn].codesize; - nsects++; - } - } - } - } - } - } - } - } - - // theoretically, all the base addresses are set now -} - -// resolve all incomplete references now -// anything that is unresolvable at this stage will throw an error -// because we know the load address of every section now -lw_expr_stack_t *resolve_sym(char *sym, int symtype, void *state) -{ - section_t *sect = state; - lw_expr_term_t *term; - int val = 0, i, fn; - lw_expr_stack_t *s; - symtab_t *se; - - if (symtype == 1) - { - // local symbol - if (!sym) - { - val = sect -> loadaddress; - goto out; - } - - // start with this section - for (se = sect -> localsyms; se; se = se -> next) - { - if (!strcmp(se -> sym, sym)) - { - val = se -> offset + sect -> loadaddress; - goto out; - } - } - // not in this section - check all sections in this file - for (i = 0; i < sect -> file -> nsections; i++) - { - for (se = sect -> file -> sections[i].localsyms; se; se = se -> next) - { - if (!strcmp(se -> sym, sym)) - { - val = se -> offset + sect -> file -> sections[i].loadaddress; - goto out; - } - } - } - // not found - fprintf(stderr, "Local symbol %s not found in %s:%s\n", sym, sect -> file -> filename, sect -> name); - exit(1); - } - else - { - // external symbol - // read all files in order until found (or not found) - for (fn = 0; fn < ninputfiles; fn++) - { - for (i = 0; i < inputfiles[fn] -> nsections; i++) - { - for (se = inputfiles[fn] -> sections[i].exportedsyms; se; se = se -> next) - { - if (!strcmp(sym, se -> sym)) - { - val = se -> offset + inputfiles[fn] -> sections[i].loadaddress; - goto out; - } - } - } - } - if (sect) - { - fprintf(stderr, "External symbol %s not found in %s:%s\n", sym, sect -> file -> filename, sect -> name); - } - else - { - fprintf(stderr, "External symbol %s not found\n", sym); - } - exit(1); - } - fprintf(stderr, "Shouldn't ever get here!!!\n"); - exit(88); -out: - s = lw_expr_stack_create(); - term = lw_expr_term_create_int(val & 0xffff); - lw_expr_stack_push(s, term); - lw_expr_term_free(term); - return s; -} - -void resolve_references(void) -{ - int sn; - reloc_t *rl; - int rval; - - // resolve entry point if required - // this must resolve to an *exported* symbol and will resolve to the - // first instance of that symbol - if (linkscript.execsym) - { - lw_expr_stack_t *s; - - s = resolve_sym(linkscript.execsym, 0, NULL); - linkscript.execaddr = lw_expr_get_value(s); - lw_expr_stack_free(s); - } - - for (sn = 0; sn < nsects; sn++) - { - for (rl = sectlist[sn].ptr -> incompletes; rl; rl = rl -> next) - { - // do a "simplify" on the expression - rval = lw_expr_reval(rl -> expr, resolve_sym, sectlist[sn].ptr); - - // is it constant? error out if not - if (rval != 0 || !lw_expr_is_constant(rl -> expr)) - { - fprintf(stderr, "Incomplete reference at %s:%s:%02X\n", sectlist[sn].ptr -> file -> filename, sectlist[sn].ptr -> name, rl -> offset); - exit(1); - } - - // put the value into the relocation address - rval = lw_expr_get_value(rl -> expr); - sectlist[sn].ptr -> code[rl -> offset] = (rval >> 8) & 0xff; - sectlist[sn].ptr -> code[rl -> offset + 1] = rval & 0xff; - } - } -}
--- a/lwlink/tags/1.0/src/lwlink.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,52 +0,0 @@ -/* -lwlink.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#define __lwlink_c_seen__ - -#include <argp.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" -#include "util.h" - -int debug_level = 0; -int outformat = OUTPUT_DECB; -char *outfile = NULL; -char *scriptfile = NULL; - -fileinfo_t **inputfiles = NULL; -int ninputfiles = 0; - -void add_input_file(char *fn) -{ - inputfiles = lw_realloc(inputfiles, sizeof(fileinfo_t *) * (ninputfiles + 1)); - inputfiles[ninputfiles] = lw_malloc(sizeof(fileinfo_t)); - inputfiles[ninputfiles++] -> filename = lw_strdup(fn); -} -
--- a/lwlink/tags/1.0/src/lwlink.h Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,130 +0,0 @@ -/* -lwlink.h -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - -Contains the main defs used by the linker -*/ - - -#ifndef __lwlink_h_seen__ -#define __lwlink_h_seen__ - -#include "expr.h" - -#define OUTPUT_DECB 0 // DECB multirecord format -#define OUTPUT_RAW 1 // raw sequence of bytes - -typedef struct symtab_s symtab_t; -struct symtab_s -{ - unsigned char *sym; // symbol name - int offset; // local offset -// int realval; // resolved value - symtab_t *next; // next symbol -}; - -typedef struct reloc_s reloc_t; -struct reloc_s -{ - int offset; // where in the section - lw_expr_stack_t *expr; // the expression to calculate it - reloc_t *next; // ptr to next relocation -}; - -typedef struct fileinfo_s fileinfo_t; - -#define SECTION_BSS 1 -typedef struct -{ - unsigned char *name; // name of the section - int flags; // section flags - int codesize; // size of the code - unsigned char *code; // pointer to the code - int loadaddress; // the actual load address of the section - int processed; // was the section processed yet? - - symtab_t *localsyms; // local symbol table - symtab_t *exportedsyms; // exported symbols table - - reloc_t *incompletes; // table of incomplete references - - fileinfo_t *file; // the file we are in -} section_t; - -struct fileinfo_s -{ - char *filename; - unsigned char *filedata; - long filesize; - section_t *sections; - int nsections; - -}; - -struct section_list -{ - section_t *ptr; // ptr to section structure - int forceaddr; // was this force to an address by the link script? -}; - -#ifndef __link_c_seen__ -extern struct section_list *sectlist; -extern int nsects; -#endif - - -#ifndef __lwlink_c_seen__ - -extern int debug_level; -extern int outformat; -extern char *outfile; -extern int ninputfiles; -extern fileinfo_t **inputfiles; -extern char *scriptfile; - -#define __lwlink_E__ extern -#else -#define __lwlink_E__ -#endif // __lwlink_c_seen__ - -__lwlink_E__ void add_input_file(char *fn); - -#undef __lwlink_E__ - -struct scriptline_s -{ - char *sectname; // name of section, NULL for wildcard - int loadat; // address to load at (or -1) - int noflags; // flags to NOT have - int yesflags; // flags to HAVE -}; - -typedef struct -{ - int nlines; // number of lines in the script - struct scriptline_s *lines; // the parsed script lines (section) - int padsize; // the size to pad to, -1 for none - char *execsym; // entry point symbol - int execaddr; // execution address (entry point) -} linkscript_t; - -#ifndef __script_c_seen__ -extern linkscript_t linkscript; -#endif - -#endif //__lwlink_h_seen__
--- a/lwlink/tags/1.0/src/main.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,155 +0,0 @@ -/* -main.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Implements the program startup code - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <argp.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" - -// command line option handling -const char *argp_program_version = PACKAGE_STRING; -const char *argp_program_bug_address = PACKAGE_BUGREPORT; - -static error_t parse_opts(int key, char *arg, struct argp_state *state) -{ - switch (key) - { - case 'o': - // output - outfile = arg; - break; - - case 's': - // script file - scriptfile = arg; - break; - - case 'd': - // debug - debug_level++; - break; - - case 'b': - // decb output - outformat = OUTPUT_DECB; - break; - - case 'r': - // raw binary output - outformat = OUTPUT_RAW; - break; - - case 'f': - // output format - if (!strcasecmp(arg, "decb")) - outformat = OUTPUT_DECB; - else if (!strcasecmp(arg, "raw")) - outformat = OUTPUT_RAW; - else - { - fprintf(stderr, "Invalid output format: %s\n", arg); - exit(1); - } - break; - case ARGP_KEY_END: - // done; sanity check - if (!outfile) - outfile = "a.out"; - break; - - case ARGP_KEY_ARG: - add_input_file(arg); - break; - - default: - return ARGP_ERR_UNKNOWN; - } - return 0; -} - -static struct argp_option options[] = -{ - { "output", 'o', "FILE", 0, - "Output to FILE"}, - { "debug", 'd', 0, 0, - "Set debug mode"}, - { "format", 'f', "TYPE", 0, - "Select output format: decb, raw, obj"}, - { "decb", 'b', 0, 0, - "Generate DECB .bin format output, equivalent of --format=decb"}, - { "raw", 'r', 0, 0, - "Generate raw binary format output, equivalent of --format=raw"}, - { "script", 's', "FILE", 0, - "Specify the linking script (overrides the build in defaults)"}, - { 0 } -}; - -static struct argp argp = -{ - options, - parse_opts, - "<input file> ...", - "LWLINK, a HD6309 and MC6809 cross-linker" -}; - -extern void read_files(void); -extern void setup_script(void); -extern void resolve_sections(void); -extern void resolve_references(void); -extern void do_output(void); - -// main function; parse command line, set up assembler state, and run the -// assembler on the first file -int main(int argc, char **argv) -{ - argp_parse(&argp, argc, argv, 0, 0, NULL); - if (ninputfiles == 0) - { - fprintf(stderr, "No input files\n"); - exit(1); - } - - // handle the linker script - setup_script(); - - // read the input files - read_files(); - - // resolve section bases and section order - resolve_sections(); - - // resolve incomplete references - resolve_references(); - - // do the actual output - do_output(); - - exit(0); -}
--- a/lwlink/tags/1.0/src/objdump.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,303 +0,0 @@ -/* -objdump.c -Copyright © 2009 William Astle - -This file is part of LWLINK - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -A standalone program to dump an object file in a text form to stdout - -*/ - -#include <stdio.h> -#include <stdlib.h> - -#include "util.h" - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -void read_lwobj16v0(unsigned char *filedata, long filesize); - -/* -The logic of reading the entire file into memory is simple. All the symbol -names in the file are NUL terminated strings and can be used directly without -making additional copies. -*/ -int main(int argc, char **argv) -{ - int i; - long size; - FILE *f; - long bread; - unsigned char *filedata; - - if (argc != 2) - { - fprintf(stderr, "Must specify exactly one input file.\n"); - exit(1); - } - - f = fopen(argv[1], "rb"); - if (!f) - { - fprintf(stderr, "Can't open file %s:", argv[1]); - perror(""); - exit(1); - } - fseek(f, 0, SEEK_END); - size = ftell(f); - rewind(f); - - filedata = lw_malloc(size); - - bread = fread(filedata, 1, size, f); - if (bread < size) - { - fprintf(stderr, "Short read on file %s (%ld/%ld):", argv[1], bread, size); - perror(""); - exit(1); - } - - fclose(f); - - if (!memcmp(filedata, "LWOBJ16", 8)) - { - // read v0 LWOBJ16 file - read_lwobj16v0(filedata, size); - } - else - { - fprintf(stderr, "%s: unknown file format\n", argv[1]); - exit(1); - } - exit(0); -} - -// this macro is used to bail out if we run off the end of the file data -// while parsing - it keeps the code below cleaner -#define NEXTBYTE() do { cc++; if (cc > filesize) { fprintf(stderr, "***invalid file format\n"); exit(1); } } while (0) -// this macro is used to refer to the current byte in the stream -#define CURBYTE() (filedata[cc < filesize ? cc : filesize - 1]) -// this one will leave the input pointer past the trailing NUL -#define CURSTR() read_lwobj16v0_str(&cc, &filedata, filesize) -unsigned char *read_lwobj16v0_str(long *cc1, unsigned char **filedata1, long filesize) -{ - int cc = *cc1; - unsigned char *filedata = *filedata1; - unsigned char *fp; - fp = &CURBYTE(); - while (CURBYTE()) - NEXTBYTE(); - NEXTBYTE(); - *cc1 = cc; - *filedata1 = filedata; - return fp; -} -// the function below can be switched to dealing with data coming from a -// source other than an in-memory byte pool by adjusting the input data -// in "fn" and the above two macros -void read_lwobj16v0(unsigned char *filedata, long filesize) -{ - unsigned char *fp; - long cc; - int val; - int bss; - - static char *opernames[] = { - "?", - "PLUS", - "MINUS", - "TIMES", - "DIVIDE", - "MOD", - "INTDIV", - "BWAND", - "BWOR", - "BWXOR", - "AND", - "OR", - "NEG", - "COM" - }; - static const int numopers = 13; - - // start reading *after* the magic number - cc = 8; - - while (1) - { - bss = 0; - - // bail out if no more sections - if (!(CURBYTE())) - break; - - fp = CURSTR(); - - printf("SECTION %s\n", fp); - - // read flags - while (CURBYTE()) - { - switch (CURBYTE()) - { - case 0x01: - printf(" FLAG: BSS\n"); - bss = 1; - break; - - default: - printf(" FLAG: %02X (unknown)\n", CURBYTE()); - break; - } - NEXTBYTE(); - } - // skip NUL terminating flags - NEXTBYTE(); - - printf(" Local symbols:\n"); - // now parse the local symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - printf(" %s=%04X\n", fp, val); - - } - // skip terminating NUL - NEXTBYTE(); - - printf(" Exported symbols\n"); - - // now parse the exported symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - printf(" %s=%04X\n", fp, val); - } - // skip terminating NUL - NEXTBYTE(); - - // now parse the incomplete references and make a list of - // external references that need resolution - printf(" Incomplete references\n"); - while (CURBYTE()) - { - printf(" ("); - // parse the expression - while (CURBYTE()) - { - int tt = CURBYTE(); - NEXTBYTE(); - switch (tt) - { - case 0x01: - // 16 bit integer - tt = CURBYTE() << 8; - NEXTBYTE(); - tt |= CURBYTE(); - NEXTBYTE(); - // normalize for negatives... - if (tt > 0x7fff) - tt -= 0x10000; - printf(" I16=%d", tt); - break; - - case 0x02: - // external symbol reference - printf(" ES=%s", CURSTR()); - break; - - case 0x03: - // internal symbol reference - printf(" IS=%s", CURSTR()); - break; - - case 0x04: - // operator - if (CURBYTE() > 0 && CURBYTE() <= numopers) - printf(" OP=%s", opernames[CURBYTE()]); - else - printf(" OP=?"); - NEXTBYTE(); - break; - - case 0x05: - // section base reference (NULL internal reference is - // the section base address - printf(" SB"); - break; - - default: - printf(" ERR"); - } - } - // skip the NUL - NEXTBYTE(); - - // fetch the offset - val = CURBYTE() << 8; - NEXTBYTE(); - val |= CURBYTE() & 0xff; - NEXTBYTE(); - printf(" ) @ %04X\n", val); - } - // skip the NUL terminating the relocations - NEXTBYTE(); - - // now set code location and size and verify that the file - // contains data going to the end of the code (if !SECTION_BSS) - val = CURBYTE() << 8; - NEXTBYTE(); - val |= CURBYTE(); - NEXTBYTE(); - - printf(" CODE %04X bytes", val); - - // skip the code if we're not in a BSS section - if (!bss) - { - int i; - for (i = 0; i < val; i++) - { - if (! (i % 16)) - { - printf("\n %04X ", i); - } - printf("%02X", CURBYTE()); - NEXTBYTE(); - } - } - printf("\n"); - } -}
--- a/lwlink/tags/1.0/src/output.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,127 +0,0 @@ -/* -output.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Actually output the binary -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" - -// this prevents warnings about not using the return value of fwrite() -// and, theoretically, can be replaced with a function that handles things -// better in the future -#define writebytes(s, l, c, f) do { int r; r = fwrite((s), (l), (c), (f)); } while (0) - -void do_output_decb(FILE *of); -void do_output_raw(FILE *of); - -void do_output(void) -{ - FILE *of; - - of = fopen(outfile, "wb"); - if (!of) - { - fprintf(stderr, "Cannot open output file %s: ", outfile); - perror(""); - exit(1); - } - - switch (outformat) - { - case OUTPUT_DECB: - do_output_decb(of); - break; - - case OUTPUT_RAW: - do_output_raw(of); - break; - - default: - fprintf(stderr, "Unknown output format doing output!\n"); - exit(111); - } - - fclose(of); -} - -void do_output_decb(FILE *of) -{ - int sn; - unsigned char buf[5]; - - for (sn = 0; sn < nsects; sn++) - { - if (sectlist[sn].ptr -> flags & SECTION_BSS) - { - // no output for a BSS section - continue; - } - if (sectlist[sn].ptr -> codesize == 0) - { - // don't generate output for a zero size section - continue; - } - // write a preamble - buf[0] = 0x00; - buf[1] = sectlist[sn].ptr -> codesize >> 8; - buf[2] = sectlist[sn].ptr -> codesize & 0xff; - buf[3] = sectlist[sn].ptr -> loadaddress >> 8; - buf[4] = sectlist[sn].ptr -> loadaddress & 0xff; - writebytes(buf, 1, 5, of); - writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); - } - // write a postamble - buf[0] = 0xff; - buf[1] = 0x00; - buf[2] = 0x00; - buf[3] = linkscript.execaddr >> 8; - buf[4] = linkscript.execaddr & 0xff; - writebytes(buf, 1, 5, of); -} - -void do_output_raw(FILE *of) -{ - int nskips = 0; // used to output blanks for BSS inline - int sn; - - for (sn = 0; sn < nsects; sn++) - { - if (sectlist[sn].ptr -> flags & SECTION_BSS) - { - // no output for a BSS section - nskips += sectlist[sn].ptr -> codesize; - continue; - } - while (nskips > 0) - { - // the "" is not an error - it turns into a single NUL byte! - writebytes("", 1, 1, of); - nskips--; - } - writebytes(sectlist[sn].ptr -> code, 1, sectlist[sn].ptr -> codesize, of); - } -}
--- a/lwlink/tags/1.0/src/readfiles.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,304 +0,0 @@ -/* -readfiles.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Reads input files - -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <argp.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> - -#include "lwlink.h" -#include "util.h" - -void read_lwobj16v0(fileinfo_t *fn); - -/* -The logic of reading the entire file into memory is simple. All the symbol -names in the file are NUL terminated strings and can be used directly without -making additional copies. -*/ -void read_files(void) -{ - int i; - long size; - FILE *f; - long bread; - for (i = 0; i < ninputfiles; i++) - { - f = fopen(inputfiles[i] -> filename, "rb"); - if (!f) - { - fprintf(stderr, "Can't open file %s:", inputfiles[i] -> filename); - perror(""); - exit(1); - } - fseek(f, 0, SEEK_END); - size = ftell(f); - rewind(f); - - inputfiles[i] -> filedata = lw_malloc(size); - inputfiles[i] -> filesize = size; - - bread = fread(inputfiles[i] -> filedata, 1, size, f); - if (bread < size) - { - fprintf(stderr, "Short read on file %s (%ld/%ld):", inputfiles[i] -> filename, bread, size); - perror(""); - exit(1); - } - - fclose(f); - - if (!memcmp(inputfiles[i] -> filedata, "LWOBJ16", 8)) - { - // read v0 LWOBJ16 file - read_lwobj16v0(inputfiles[i]); - } - else - { - fprintf(stderr, "%s: unknown file format\n", inputfiles[i] -> filename); - exit(1); - } - } -} - -// this macro is used to bail out if we run off the end of the file data -// while parsing - it keeps the code below cleaner -#define NEXTBYTE() do { cc++; if (cc > fn -> filesize) { fprintf(stderr, "%s: invalid file format\n", fn -> filename); exit(1); } } while (0) -// this macro is used to refer to the current byte in the stream -#define CURBYTE() (fn -> filedata[cc < fn -> filesize ? cc : fn -> filesize - 1]) -// this one will leave the input pointer past the trailing NUL -#define CURSTR() read_lwobj16v0_str(&cc, fn) -unsigned char *read_lwobj16v0_str(long *cc1, fileinfo_t *fn) -{ - int cc = *cc1; - unsigned char *fp; - fp = &CURBYTE(); - while (CURBYTE()) - NEXTBYTE(); - NEXTBYTE(); - *cc1 = cc; - return fp; -} -// the function below can be switched to dealing with data coming from a -// source other than an in-memory byte pool by adjusting the input data -// in "fn" and the above two macros -void read_lwobj16v0(fileinfo_t *fn) -{ - unsigned char *fp; - long cc; - section_t *s; - int val; - symtab_t *se; - - // start reading *after* the magic number - cc = 8; - - // init data - fn -> sections = NULL; - fn -> nsections = 0; - - while (1) - { -// NEXTBYTE(); - // bail out if no more sections - if (!(CURBYTE())) - break; - - fp = CURSTR(); - - // we now have a section name in fp - // create new section entry - fn -> sections = lw_realloc(fn -> sections, sizeof(section_t) * (fn -> nsections + 1)); - s = &(fn -> sections[fn -> nsections]); - fn -> nsections += 1; - - s -> localsyms = NULL; - s -> flags = 0; - s -> codesize = 0; - s -> name = fp; - s -> loadaddress = 0; - s -> localsyms = NULL; - s -> exportedsyms = NULL; - s -> incompletes = NULL; - s -> processed = 0; - s -> file = fn; - - // read flags - while (CURBYTE()) - { - switch (CURBYTE()) - { - case 0x01: - s -> flags |= SECTION_BSS; - break; - - default: - fprintf(stderr, "%s (%s): unrecognized section flag %02X\n", fn -> filename, s -> name, (int)(CURBYTE())); - exit(1); - } - NEXTBYTE(); - } - // skip NUL terminating flags - NEXTBYTE(); - - // now parse the local symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - // create symbol table entry - se = lw_malloc(sizeof(symtab_t)); - se -> next = s -> localsyms; - s -> localsyms = se; - se -> sym = fp; - se -> offset = val; - } - // skip terminating NUL - NEXTBYTE(); - - // now parse the exported symbol table - while (CURBYTE()) - { - fp = CURSTR(); - - // fp is the symbol name - val = (CURBYTE()) << 8; - NEXTBYTE(); - val |= (CURBYTE()); - NEXTBYTE(); - // val is now the symbol value - - // create symbol table entry - se = lw_malloc(sizeof(symtab_t)); - se -> next = s -> exportedsyms; - s -> exportedsyms = se; - se -> sym = fp; - se -> offset = val; - } - // skip terminating NUL - NEXTBYTE(); - - // now parse the incomplete references and make a list of - // external references that need resolution - while (CURBYTE()) - { - reloc_t *rp; - lw_expr_term_t *term; - - // we have a reference - rp = lw_malloc(sizeof(reloc_t)); - rp -> next = s -> incompletes; - s -> incompletes = rp; - rp -> offset = 0; - rp -> expr = lw_expr_stack_create(); - - // parse the expression - while (CURBYTE()) - { - int tt = CURBYTE(); - NEXTBYTE(); - switch (tt) - { - case 0x01: - // 16 bit integer - tt = CURBYTE() << 8; - NEXTBYTE(); - tt |= CURBYTE(); - NEXTBYTE(); - // normalize for negatives... - if (tt > 0x7fff) - tt -= 0x10000; - term = lw_expr_term_create_int(tt); - break; - - case 0x02: - // external symbol reference - term = lw_expr_term_create_sym(CURSTR(), 0); - break; - - case 0x03: - // internal symbol reference - term = lw_expr_term_create_sym(CURSTR(), 1); - break; - - case 0x04: - // operator - term = lw_expr_term_create_oper(CURBYTE()); - NEXTBYTE(); - break; - - case 0x05: - // section base reference (NULL internal reference is - // the section base address - term = lw_expr_term_create_sym(NULL, 1); - break; - - default: - fprintf(stderr, "%s (%s): bad relocation expression\n", fn -> filename, s -> name); - exit(1); - } - lw_expr_stack_push(rp -> expr, term); - lw_expr_term_free(term); - } - // skip the NUL - NEXTBYTE(); - - // fetch the offset - rp -> offset = CURBYTE() << 8; - NEXTBYTE(); - rp -> offset |= CURBYTE() & 0xff; - NEXTBYTE(); - } - // skip the NUL terminating the relocations - NEXTBYTE(); - - // now set code location and size and verify that the file - // contains data going to the end of the code (if !SECTION_BSS) - s -> codesize = CURBYTE() << 8; - NEXTBYTE(); - s -> codesize |= CURBYTE(); - NEXTBYTE(); - - s -> code = &(CURBYTE()); - - // skip the code if we're not in a BSS section - if (!(s -> flags & SECTION_BSS)) - { - int i; - for (i = 0; i < s -> codesize; i++) - NEXTBYTE(); - } - } -}
--- a/lwlink/tags/1.0/src/script.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,257 +0,0 @@ -/* -script.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. - - -Read and parse linker scripts -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "lwlink.h" -#include "util.h" - -// the built-in DECB target linker script -static char *decb_script = - "section init load 2000\n" - "section code\n" - "section *,!bss\n" - "section *,bss\n" - "entry 2000\n" - ; - -// the built-in RAW target linker script -static char *raw_script = - "section init load 0000\n" - "section code\n" - "section *,!bss\n" - "section *,bss\n" - ; - -// the "simple" script -static char *simple_script = - "section *,!bss\n" - "section *,bss\n" - ; - -linkscript_t linkscript = { 0, NULL, -1 }; - -void setup_script() -{ - char *script, *oscript; - long size; - - // read the file if needed - if (scriptfile) - { - FILE *f; - long bread; - - f = fopen(scriptfile, "rb"); - if (!f) - { - fprintf(stderr, "Can't open file %s:", scriptfile); - perror(""); - exit(1); - } - fseek(f, 0, SEEK_END); - size = ftell(f); - rewind(f); - - script = lw_malloc(size + 2); - - bread = fread(script, 1, size, f); - if (bread < size) - { - fprintf(stderr, "Short read on file %s (%ld/%ld):", scriptfile, bread, size); - perror(""); - exit(1); - } - fclose(f); - - script[size] = '\n'; - script[size + 1] = '\0'; - } - else - { - // fetch defaults based on output mode - switch (outformat) - { - case OUTPUT_RAW: - script = raw_script; - break; - - case OUTPUT_DECB: - script = decb_script; - break; - - default: - script = simple_script; - break; - } - - size = strlen(script); - } - - oscript = script; - // now parse the script file - while (*script) - { - char *ptr, *ptr2, *line; - - for (ptr = script; *ptr && *ptr != '\n' && *ptr != '\r'; ptr++) - /* do nothing */ ; - - line = lw_malloc(ptr - script + 1); - memcpy(line, script, ptr - script); - line[ptr - script] = '\0'; - - // skip line terms - for (script = ptr + 1; *script == '\n' || *script == '\r'; script++) - /* do nothing */ ; - - // ignore leading whitespace - for (ptr = line; *ptr && isspace(*ptr); ptr++) - /* do nothing */ ; - - // ignore blank lines - if (!*ptr) - continue; - - for (ptr = line; *ptr && !isspace(*ptr); ptr++) - /* do nothing */ ; - - // now ptr points to the char past the first word - // NUL it out - if (*ptr) - *ptr++ = '\0'; - - // skip spaces after the first word - for ( ; *ptr && isspace(*ptr); ptr++) - /* do nothing */ ; - - if (!strcmp(line, "pad")) - { - // padding - // parse the hex number and stow it - linkscript.padsize = strtol(ptr, NULL, 16); - if (linkscript.padsize < 0) - linkscript.padsize = 0; - } - else if (!strcmp(line, "entry")) - { - int eaddr; - - eaddr = strtol(ptr, &ptr2, 16); - if (*ptr2) - { - linkscript.execaddr = -1; - linkscript.execsym = lw_strdup(ptr); - } - else - { - linkscript.execaddr = eaddr; - linkscript.execsym = NULL; - } - } - else if (!strcmp(line, "section")) - { - // section - // parse out the section name and flags - for (ptr2 = ptr; *ptr2 && !isspace(*ptr2); ptr2++) - /* do nothing */ ; - - if (*ptr2) - *ptr2++ = '\0'; - - while (*ptr2 && isspace(*ptr2)) - ptr2++; - - // ptr now points to the section name and flags and ptr2 - // to the first non-space character following - - // then look for "load <addr>" clause - if (*ptr2) - { - if (!strncmp(ptr2, "load", 4)) - { - ptr2 += 4; - while (*ptr2 && isspace(*ptr2)) - ptr2++; - - } - else - { - fprintf(stderr, "%s: bad script\n", scriptfile); - exit(1); - } - } - - // now ptr2 points to the load address if there is one - // or NUL if not - linkscript.lines = lw_realloc(linkscript.lines, sizeof(struct scriptline_s) * (linkscript.nlines + 1)); - - linkscript.lines[linkscript.nlines].noflags = 0; - linkscript.lines[linkscript.nlines].yesflags = 0; - if (*ptr2) - linkscript.lines[linkscript.nlines].loadat = strtol(ptr2, NULL, 16); - else - linkscript.lines[linkscript.nlines].loadat = -1; - for (ptr2 = ptr; *ptr2 && *ptr2 != ','; ptr2++) - /* do nothing */ ; - if (*ptr2) - { - *ptr2++ = '\0'; - if (!strcmp(ptr2, "!bss")) - { - linkscript.lines[linkscript.nlines].noflags = SECTION_BSS; - } - else if (!strcmp(ptr2, "bss")) - { - linkscript.lines[linkscript.nlines].yesflags = SECTION_BSS; - } - else - { - fprintf(stderr, "%s: bad script\n", scriptfile); - exit(1); - } - } - if (ptr[0] == '*' && ptr[1] == '\0') - linkscript.lines[linkscript.nlines].sectname = NULL; - else - linkscript.lines[linkscript.nlines].sectname = lw_strdup(ptr); - linkscript.nlines++; - } - else - { - fprintf(stderr, "%s: bad script\n", scriptfile); - exit(1); - } - lw_free(line); - } - - if (scriptfile) - lw_free(oscript); -}
--- a/lwlink/tags/1.0/src/util.c Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,87 +0,0 @@ -/* -util.c -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -Utility functions -*/ - -#define __util_c_seen__ - -#include <malloc.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "util.h" - -void *lw_malloc(int size) -{ - void *ptr; - - ptr = malloc(size); - if (!ptr) - { - // bail out; memory allocation error - fprintf(stderr, "lw_malloc(): Memory allocation error\n"); - exit(1); - } - return ptr; -} - -void *lw_realloc(void *optr, int size) -{ - void *ptr; - - if (size == 0) - { - lw_free(optr); - return; - } - - ptr = realloc(optr, size); - if (!ptr) - { - fprintf(stderr, "lw_realloc(): memory allocation error\n"); - exit(1); - } -} - -void lw_free(void *ptr) -{ - if (ptr) - free(ptr); -} - -char *lw_strdup(const char *s) -{ - char *d; - - if (!s) - return NULL; - - d = strdup(s); - if (!d) - { - fprintf(stderr, "lw_strdup(): memory allocation error\n"); - exit(1); - } - - return d; -}
--- a/lwlink/tags/1.0/src/util.h Tue Jan 27 05:54:10 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,44 +0,0 @@ -/* -util.h -Copyright © 2009 William Astle - -This file is part of LWLINK. - -LWLINK is free software: you can redistribute it and/or modify it under the -terms of the GNU General Public License as published by the Free Software -Foundation, either version 3 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for -more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -/* -Utility functions -*/ - -#ifndef __util_h_seen__ -#define __util_h_seen__ - -#ifndef __util_c_seen__ -#define __util_E__ extern -#else -#define __util_E__ -#endif - -// allocate memory -__util_E__ void *lw_malloc(int size); -__util_E__ void lw_free(void *ptr); -__util_E__ void *lw_realloc(void *optr, int size); - -// string stuff -__util_E__ char *lw_strdup(const char *s); - -#undef __util_E__ - -#endif // __util_h_seen__