mirror of
https://github.com/drasko/codezero.git
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89 lines
2.4 KiB
Python
Executable File
89 lines
2.4 KiB
Python
Executable File
#! /usr/bin/env python2.6
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# -*- mode: python; coding: utf-8; -*-
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#
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# Codezero -- Virtualization microkernel for embedded systems.
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#
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# Copyright © 2009 B Labs Ltd
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#
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import os, sys
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from optparse import OptionParser
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from os.path import join
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from os import path
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import elf, sys
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def conv_hex(val):
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hexval = hex(val)
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if hexval[-1:] == 'L':
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hexval = hexval[:-1]
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return hexval
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lds_header = \
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'''
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/*
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* The next free p_align'ed LMA base address
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*
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* Usually in ARM p_align == 16K
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*
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* p_align = %s
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*/
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'''
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def main():
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usage = "usage: %prog [options] arg"
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parser = OptionParser(usage)
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parser.add_option("--first-free-page",
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action = "store_true", dest = "ffpage",
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default = False,
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help = "Prints out the first free loadable page "
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"available after the image in "
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"linker script format")
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parser.add_option("--lma-start-end", action = "store_true",
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dest = "lma_boundary", default = False,
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help = "Prints out the start and end LMA boundaries "
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"of an image. Useful for aligining images in "
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"physical memory.")
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(options, args) = parser.parse_args()
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if len(args) != 1:
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parser.print_help()
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elffile = elf.ElfFile.from_file(args[0])
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if options.lma_boundary:
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paddr_first = 0
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paddr_start = 0
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paddr_end = 0
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for pheader in elffile.pheaders:
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x = pheader.ai
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if str(x.p_type) != "LOAD":
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continue
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if paddr_first == 0:
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paddr_first = 1
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paddr_start = x.p_paddr.value
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if paddr_start > x.p_paddr.value:
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paddr_start = x.p_paddr.value
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if paddr_end < x.p_paddr + x.p_memsz:
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paddr_end = x.p_paddr + x.p_memsz
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rest, image_name = path.split(args[0])
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if image_name[-4] == ".":
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image_name = image_name[:-4]
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print image_name
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if hex(paddr_start)[-1] == "L":
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print "image_start " + hex(paddr_start)[:-1]
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else:
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print "image_start " + hex(paddr_start)
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if hex(paddr_end)[-1] == "L":
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print "image_end " + hex(paddr_end)[:-1]
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else:
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print "image_end " + hex(paddr_end)
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if __name__ == "__main__":
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main()
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