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https://github.com/drasko/codezero.git
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88 lines
3.2 KiB
Python
88 lines
3.2 KiB
Python
# -*- mode: python; coding: utf-8; -*-
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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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# This program is free software: you can redistribute it and/or modify it under the terms of the GNU
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# General Public License as published by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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# the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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# License for more details.
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#
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# You should have received a copy of the GNU General Public License along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# Author: Russel Winder
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Import('environment', 'previousImage')
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taskName = 'test0'
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def createTestExecLinkerScript(target, source, env):
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with open(target[0].path, 'w') as outFile:
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outFile.write("""
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/*
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* Simple linker script for userspace or svc tasks.
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*
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* Copyright (C) 2007 Bahadir Balban
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*/
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/*
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* The only catch with this linker script is that everything
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* is linked starting at virtual_base, and loaded starting
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* at physical_base. virtual_base is the predefined region
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* of virtual memory for userland applications. physical_base
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* is determined at build-time, it is one of the subsequent pages
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* that come after the kernel image's load area.
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*/
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/* USER_AREA_START, see memlayout.h */
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virtual_base = 0x10000000;
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__stack = (0x20000000 - 0x1000 - 8); /* First page before the env/args */
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INCLUDE "%s"
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/* physical_base = 0x228000; */
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offset = virtual_base - physical_base;
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ENTRY(_start)
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SECTIONS
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{
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. = virtual_base;
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_start_text = .;
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.text : AT (ADDR(.text) - offset) { *(.text.init) *(.text) }
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/* rodata is needed else your strings will link at physical! */
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.rodata : AT (ADDR(.rodata) - offset) { *(.rodata) }
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.rodata1 : AT (ADDR(.rodata1) - offset) { *(.rodata1) }
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. = ALIGN(4K);
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.data : AT (ADDR(.data) - offset) { *(.data) }
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.bss : AT (ADDR(.bss) - offset) { *(.bss) }
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_end = .;
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}
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""" % ( source[0].path ))
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def createTestExecS(target, source, env):
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with open(target[0].path, 'w') as outFile:
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outFile.write('''
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.section .testexec
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.align 4
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.incbin "%s"
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.align 4
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''' % ( source[0].path ))
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testTaskEnvironment = environment.Clone()
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testTaskEnvironment.Append(CPPPATH=['#' + testTaskEnvironment['posixServicesDirectory'] +'/libposix/include/posix'])
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testExecLinkerScript = Command('#build/' + testTaskEnvironment['posixServicesDirectory'] +'/' + taskName + '/include/test_exec_linker.lds', testTaskEnvironment['physicalBaseLinkerScript'], createTestExecLinkerScript)
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testExecEnvironment = testTaskEnvironment.Clone()
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testExecEnvironment.Append(LINKFLAGS=['-T' + testExecLinkerScript[0].path])
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testExec = testExecEnvironment.Program('test_exec', Glob('src/test_exec/*.[cS]'))
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Depends(testExec, testExecLinkerScript)
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testExecS = Command('#build/' + testTaskEnvironment['posixServicesDirectory'] + '/' + taskName + '/test_exec.S', testExec, createTestExecS)
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program = testTaskEnvironment['buildTask'](taskName, Glob('*.c') + Glob('src/*.[cS]') + testExecS, testTaskEnvironment, previousImage)
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Depends(program, testExec)
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Return('program')
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