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Generate the final link linker scripts.

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Russel Winder
2009-08-10 11:30:53 +01:00
parent 52962b5b19
commit 9cb2b7470f
4 changed files with 45 additions and 21 deletions
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28
loader/SConscript
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@@ -74,22 +74,44 @@ def createMainC(target, source, env):
for item in source[1:]:
name = os.path.splitext(item.name)[0]
if name == 'start' : name = 'kernel'
externs += 'extern char _start_%s[];\nextern char _end_%s[];\n' % (name, name)
declarations += 'void *%s_entry = NULL;\n' % (name,)
loads += 'printf("Loading the %s...\\n");\nload_image(&%s_entry, _start_%s, _end_%s);\n' %(name, name, name, name)
externs += '''
extern char _start_%s[];
extern char _end_%s[];
''' % (name, name)
declarations += ' void *%s_entry = NULL;\n' % (name,)
loads += '''
printf("Loading the %s...\\n");
load_image(&%s_entry, _start_%s, _end_%s);
''' %(name, name, name, name)
text = inFile.read()
text = text.replace('__EXTERNAL_SYMBOLS_EDIT_MARKER__', externs)
text = text.replace('__DECLARATIONS_EDIT_MARKER__', declarations)
text = text.replace('__LOAD_STATEMENTS_EDIT_MARKER__', loads)
outFile.write(text)
def createLinkerScript(target, source, env):
with open(source[0].path) as inFile:
with open(target[0].path, 'w') as outFile:
linkerItems = ''
for item in source[1:]:
name = os.path.splitext(item.name)[0]
if name == 'start' : name = 'kernel'
linkerItems += '''
_start_%s = .;
*(.%s)
_end_%s = .;
''' % (name, name, name)
outFile.write(inFile.read().replace('__LINKER_ITEMS_EDIT_MARKER__', linkerItems))
startAxfS = Command('start.axf.S', images[0], ksymToLds)
kernelS = Command('kernel.S', images + [startAxfS], createKernelSFile)
mainC = Command('main.c', ['main.c.in'] + images, createMainC)
linkerScript = Command('linker.lds', ['linker.lds.in'] + images, createLinkerScript)
objects = environment.Object(['arch.c' , kernelS, startAxfS, mainC])
Depends(objects, environment['configFiles'])
Depends(objects, images)
program = environment.Program('final', objects + [environment['baremetal_crt0']])
Depends(program, linkerScript)
Return('program')