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https://github.com/drasko/codezero.git
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fb1de576cb
If hex converted had a 1 in the MSB, an L was appended to the number. The conversion routine removes this.
93 lines
2.7 KiB
Python
Executable File
93 lines
2.7 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 -- a 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, shelve, subprocess
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from os.path import join
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PROJRELROOT = '../../'
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sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), PROJRELROOT)))
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from config.projpaths import *
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from config.configuration import *
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from config.lib import *
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# Convert address from python literal to numeric value
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def address_remove_literal(address):
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value = hex(int(address, 16) - 0xf0000000)
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if value[-1] in ['l', 'L']:
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value = value[:-1]
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return value
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ksym_header = \
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'''
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/*
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* %s autogenerated from %s.
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* by %s
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*
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* This file is included by the loader sources so that any
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* kernel symbol address can be known in advance and stopped
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* at by debuggers before virtual memory is enabled.
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*/
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'''
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assembler_symbol_definition = \
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'''
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.section .text
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.align 4
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.global %s
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.type %s, function
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.equ %s, %s
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'''
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def generate_ksym_to_loader(target_path, source_path):
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symbols = ['break_virtual']
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with open(target_path, 'w') as asm_file:
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asm_file.write(ksym_header % (target_path, source_path, sys.argv[0]))
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for symbol in symbols:
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process = subprocess.Popen('arm-none-eabi-objdump -d ' + \
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source_path + ' | grep "<' + \
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symbol + '>"', shell=True, \
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stdout=subprocess.PIPE)
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assert process.wait() == 0
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address, name = process.stdout.read().split()
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assert '<' + symbol + '>:' == name
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asm_file.write(assembler_symbol_definition % \
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(symbol, symbol, symbol, \
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address_remove_literal(address)))
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decl_sect_asm = \
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'''
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.align 4
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.section %s
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.incbin "%s"
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'''
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def generate_image_S(target_path, images):
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kern_fname = 'kernel.elf'
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conts_fname = 'containers.elf'
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fbody = ''
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with open(target_path, 'w+') as images_S:
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for img in images:
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print os.path.basename(img.path)
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if os.path.basename(img.path) == kern_fname:
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fbody += decl_sect_asm % ('.kernel', img)
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if os.path.basename(img.path) == conts_fname:
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fbody += decl_sect_asm % ('.containers', img)
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images_S.write(fbody)
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if __name__ == "__main__":
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if len(sys.argv) == 1:
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generate_ksym_to_loader(join(PROJROOT, 'loader/ksyms.S'), \
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join(BUILDDIR, 'kernel.elf'))
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elif len(sys.argv) == 3:
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generate_ksym_to_loader(sys.argv[1], sys.argv[1])
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else:
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print "Usage: %s <asm filename> <kernel image filename>" % sys.argv[0]
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