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https://github.com/drasko/codezero.git
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Merge branch 'newBuild' of /opt/c0-trees/codezero-russel into devel
Conflicts: SConstruct src/api/SConscript src/arch/arm/SConscript src/generic/SConscript tasks/bootdesc/SConstruct
This commit is contained in:
Bahadir Balban
24
tasks/mm0/SConscript
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24
tasks/mm0/SConscript
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# -*- 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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program = environment['buildTask']('mm0', Glob('*.c') + [Glob(directory + '/*.c') for directory in [ 'src', 'src/lib', 'src/lib/elf', 'src/arch-' + environment['ARCH']]], environment, previousImage)
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Return('program')
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@@ -1,136 +0,0 @@
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#
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# User space application build script
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#
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# Copyright (C) 2007 Bahadir Balban
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#
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import os
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import sys
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import shutil
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from string import split
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from os.path import join
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from glob import glob
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task_name = "mm0"
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# The root directory of the repository where this file resides:
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project_root = "../.."
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tools_root = join(project_root, "tools")
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prev_image = join(project_root, "build/start.axf")
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libs_path = join(project_root, "libs")
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ld_script = "include/linker.lds"
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physical_base_ld_script = "include/physical_base.lds"
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# libc paths:
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libc_variant = "userspace"
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libc_libpath = join(libs_path, "c/build/%s" % libc_variant)
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libc_incpath = join(libc_libpath, "include")
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libc_crt0 = join(libs_path, "c/build/crt/sys-userspace/arch-arm/crt0.o")
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libc_name = "c-%s" % libc_variant
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# libl4 paths:
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libl4_path = "../libl4"
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libl4_incpath = join(libl4_path, "include")
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# libposix paths:
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libposix_path = "../libposix"
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libposix_incpath = join(libposix_path, "include")
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#libmem paths:
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libmem_path = "../libmem"
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libmem_incpath = "../libmem"
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# kernel paths:
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kernel_incpath = join(project_root, "include")
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# Kernel config header.
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config_h = join(project_root, "include/l4/config.h")
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# If crt0 is in its library path, it becomes hard to link with it.
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# For instance the linker script must use an absolute path for it.
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def copy_crt0(source, target, env):
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os.system("cp " + str(source[0]) + " " + str(target[0]))
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def get_physical_base(source, target, env):
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os.system(join(tools_root, "pyelf/readelf.py --first-free-page " + \
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prev_image +" >> " + physical_base_ld_script))
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# The kernel build environment:
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env = Environment(CC = 'arm-none-linux-gnueabi-gcc',
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# We don't use -nostdinc because sometimes we need standard headers,
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# such as stdarg.h e.g. for variable args, as in printk().
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CCFLAGS = ['-g', '-nostdlib', '-ffreestanding', '-std=gnu99', '-Wall', '-Werror' ],
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LINKFLAGS = ['-nostdlib', '-T' + ld_script, "-L" + libc_libpath, "-L" + libl4_path, \
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"-L" + libposix_path, "-L" + libmem_path],
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ASFLAGS = ['-D__ASSEMBLY__'],
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PROGSUFFIX = '.axf', # The suffix to use for final executable
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ENV = {'PATH' : os.environ['PATH']}, # Inherit shell path
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LIBS = [libc_name, 'libl4', 'libmm', 'libmc', 'libkm', 'libposix', \
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'gcc', libc_name], # libgcc.a - This is required for division routines.
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CPPFLAGS = "-D__USERSPACE__",
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CPPPATH = ['#include', libl4_incpath, libc_incpath, kernel_incpath, \
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libmem_incpath, libposix_incpath])
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def extract_arch_subarch_plat(config_header):
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'''
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From the autogenerated kernel config.h, extracts platform, archictecture,
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subarchitecture information. This is used to include the relevant headers
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from the kernel directories.
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'''
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arch = None
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subarch = None
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plat = None
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if not os.path.exists(config_header):
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print "\n\nconfig.h does not exist. "\
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"Please run: `scons configure' first\n\n"
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sys.exit()
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f = open(config_h, "r")
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while True:
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line = f.readline()
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if line == "":
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break
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parts = split(line)
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if len(parts) > 0:
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if parts[0] == "#define":
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if parts[1] == "__ARCH__":
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arch = parts[2]
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elif parts[1] == "__PLATFORM__":
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plat = parts[2]
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elif parts[1] == "__SUBARCH__":
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subarch = parts[2]
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f.close()
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if arch == None:
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print "Error: No config symbol found for architecture"
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sys.exit()
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if subarch == None:
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print "Error: No config symbol found for subarchitecture"
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sys.exit()
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if plat == None:
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print "Error: No config symbol found for platform"
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sys.exit()
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return arch, subarch, plat
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def create_symlinks(arch):
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arch_path = "include/arch"
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arch_path2 ="src/arch"
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if os.path.exists(arch_path):
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os.system("rm %s" % (arch_path))
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os.system("ln -s %s %s" % ("arch-" + arch, arch_path))
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if os.path.exists(arch_path2):
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os.system("rm %s" % (arch_path2))
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os.system("ln -s %s %s" % ("arch-" + arch, arch_path2))
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arch, subarch, plat = extract_arch_subarch_plat(config_h)
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create_symlinks(arch) # Creates symlinks to architecture specific directories.
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src = [glob("src/*.c"), glob("src/lib/*.c"), glob("src/lib/elf/*.c"), glob("*.c"), glob("src/arch/*.c")]
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objs = env.Object(src)
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physical_base = env.Command(physical_base_ld_script, prev_image, get_physical_base)
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crt0_copied = env.Command("crt0.o", libc_crt0, copy_crt0)
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task = env.Program(task_name, objs + [crt0_copied])
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env.Alias(task_name, task)
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env.Depends(task, physical_base)
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