mirror of
https://github.com/drasko/codezero.git
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ce62459d13
Remove the linker script and assembler load source in favour of generating the source so that the correct path is in the source.
88 lines
3.1 KiB
Python
88 lines
3.1 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) { crt0.o(.text) *(.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=['#tasks/libposix/include/posix'])
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testExecLinkerScript = Command('#build/tasks/' + 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/*.c') + ['#' + environment['userspace_crt0'][0].name])
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Depends(testExec, testExecLinkerScript)
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testExecS = Command('#build/tasks/' + taskName + '/test_exec.S', testExec, createTestExecS)
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program = testTaskEnvironment['buildTask'](taskName, Glob('*.c') + Glob('src/*.c') + testExecS, testTaskEnvironment, previousImage)
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Depends(program, testExec)
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Return('program')
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