source: mainline/boot/tools/pack.py@ e19d667

#!/usr/bin/env python
#
# Copyright (c) 2008 Martin Decky
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
# - The name of the author may not be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
"""
Binary package creator
"""

import sys
import os
import subprocess

def usage(prname):
        "Print usage syntax"
        print prname + " <OBJCOPY> <FORMAT> <OUTPUT_FORMAT> <ARCH> <ALIGNMENT>"

def main():
        if (len(sys.argv) < 6):
                usage(sys.argv[0])
                return
        
        if (not sys.argv[5].isdigit()):
                print "<ALIGNMENT> must be a number"
                return
        
        templatename = "_link.ld.in"
        workdir = os.getcwd()
        objcopy = sys.argv[1]
        format = sys.argv[2]
        output_format = sys.argv[3]
        arch = sys.argv[4]
        align = int(sys.argv[5], 0)
        
        link = file("_link.ld", "w")
        header = file("_components.h", "w")
        data = file("_components.c", "w")
        
        link.write("OUTPUT_FORMAT(\"" + output_format + "\")\n")
        link.write("OUTPUT_ARCH(" + arch + ")\n")
        link.write("ENTRY(start)\n\n")
        link.write("SECTIONS {\n")
        
        size = os.path.getsize(templatename)
        rd = 0
        template = file(templatename, "r")
        
        while (rd < size):
                buf = template.read(4096)
                link.write(buf)
                rd += len(buf)
        
        template.close()
        
        link.write("\n")
        
        header.write("#ifndef ___COMPONENTS_H__\n")
        header.write("#define ___COMPONENTS_H__\n\n")
        
        data.write("#include \"_components.h\"\n\n")
        data.write("void init_components(component_t *components)\n")
        data.write("{\n")
        
        cnt = 0
        for task in sys.argv[6:]:
                basename = os.path.basename(task)
                plainname = os.path.splitext(basename)[0]
                path = os.path.dirname(task)
                object = plainname + ".o"
                symbol = "_binary_" + basename.replace(".", "_")
                macro = plainname.upper()
                
                print task + " -> " + object
                
                link.write("\t\t. = ALIGN(" + ("%d" % align) + ");\n")
                link.write("\t\t*(." + plainname + "_image);\n\n")
                
                header.write("extern int " + symbol + "_start;\n")
                header.write("extern int " + symbol + "_end;\n\n")
                header.write("#define " + macro + "_START ((void *) &" + symbol + "_start)\n")
                header.write("#define " + macro + "_END ((void *) &" + symbol + "_end)\n")
                header.write("#define " + macro + "_SIZE ((unsigned int) " + macro + "_END - (unsigned int) " + macro + "_START)\n\n")
                
                data.write("\tcomponents[" + ("%d" % cnt) + "].name = \"" + plainname + "\";\n")
                data.write("\tcomponents[" + ("%d" % cnt) + "].start = " + macro + "_START;\n")
                data.write("\tcomponents[" + ("%d" % cnt) + "].end = " + macro + "_END;\n")
                data.write("\tcomponents[" + ("%d" % cnt) + "].size = " + macro + "_SIZE;\n\n")
                
                os.chdir(path)
                subprocess.call([objcopy,
                        "-I", "binary",
                        "-O", format,
                        "-B", arch,
                        "--rename-section", ".data=." + plainname + "_image",
                        basename, os.path.join(workdir, object)])
                os.chdir(workdir)
                
                cnt = cnt + 1
                
        link.write("\t}\n")
        link.write("}\n")
        
        header.write("#define COMPONENTS " + ("%d" % cnt) + "\n\n")
        header.write("typedef struct {\n")
        header.write("\tchar *name;\n\n")
        header.write("\tvoid *start;\n")
        header.write("\tvoid *end;\n")
        header.write("\tunsigned int size;\n")
        header.write("} component_t;\n\n")
        header.write("extern void init_components(component_t *components);\n\n")
        header.write("#endif\n")
        
        data.write("}\n")
        
        link.close()
        header.close()
        data.close()

if __name__ == '__main__':
        main()