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Got the tasks linking.

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Russel Winder
2009-08-05 16:24:13 +01:00
parent eb45780f16
commit 38a0fdd4e2
6 changed files with 65 additions and 37 deletions
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43
SConstruct
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@@ -169,7 +169,7 @@ else :
Alias('kernel', startAxf)
########## Build the tasks ########################
########## Build the task libraries ########################
taskSupportLibraryEnvironment = baseEnvironment.Clone(
CC = 'arm-none-linux-gnueabi-gcc',
@@ -188,22 +188,51 @@ else :
Depends(taskLibraries, taskSupportLibraryEnvironment['configFiles'])
Alias ('tasklibs', taskLibraries)
########## Build the tasks ########################
def buildTask(programName, sources, environment, previousImage, extraCppPath=None):
e = environment.Clone()
e.Append(LINKFLAGS=['-Ttasks/' + programName + '/include/linker.lds'])
e.Append(LIBPATH=['#build/tasks/' + programName, '#build/lib/c/userspace/crt/sys-userspace/arch-arm'])
if extraCppPath: e.Append(CPPPATH=extraCppPath)
objects = e.StaticObject(sources)
Depends(objects, e['configFiles'])
program = e.Program(programName, objects + ['#' + e['crt0'][0].name])
physicalBaseLinkerScript = Command('include/physical_base.lds', previousImage, 'tools/pyelf/readelf.py --first-free-page ' + previousImage[0].path + ' >> $TARGET')
Depends(program, [physicalBaseLinkerScript, e['crt0']])
return program
tasksEnvironment = baseEnvironment.Clone(
CC = 'arm-none-linux-gnueabi-gcc',
CCFLAGS = ['-g', '-nostdlib', '-ffreestanding', '-std=gnu99', '-Wall', '-Werror'],
LINKFLAGS = ['-nostdlib'],
ASFLAGS = ['-D__ASSEMBLY__'],
LIBS = taskLibraries + ['gcc', libs['userspace']],
LIBS = [libs['userspace']] + taskLibraries + ['gcc', libs['userspace']], #### TODO: Why have the userspace C library twice?
PROGSUFFIX = '.axf',
CPPDEFINES = ['__USERSPACE__'],
CPPPATH = ['#' + buildDirectory, '#' + buildDirectory + '/l4', '#' + includeDirectory, 'include', '#tasks/libl4/include', '#tasks/libmem', '#tasks/libposix/include'],
kernel = startAxf)
buildTask = buildTask)
####
#### TODO: Why doe the linker require crt0.o to be in the current directory and named as such. Is it
#### because of the text in the linker script?
####
userspaceRuntime = Command(crts['userspace'][0].name, crts['userspace'][0], 'ln -s $SOURCE.path $TARGET')
execfile('tasks/taskOrder.py')
imageOrderData = [(taskName, []) for taskName in taskOrder]
imageOrderData[0][1].append(startAxf)
tasks = []
for task in [f.name for f in Glob('tasks/*') if f.name not in taskLibraryNames + ['bootdesc']]:
tasks.append(SConscript('tasks/' + task + '/SConscript', variant_dir = buildDirectory + '/tasks/' + task, duplicate = 0, exports = {'environment': tasksEnvironment}))
for i in range(len(imageOrderData)):
taskName = imageOrderData[i][0]
dependency = imageOrderData[i][1]
program = SConscript('tasks/' + taskName + '/SConscript', variant_dir = buildDirectory + '/tasks/' + taskName, duplicate = 0, exports = {'environment': tasksEnvironment, 'previousImage': dependency[0]})
Depends(program, userspaceRuntime)
tasks.append(program)
if i < len(imageOrderData) - 1:
imageOrderData[i+1][1].append(program)
Depends(tasks, tasksEnvironment['configFiles'])
Alias ('tasks', tasks)