675dcd1a9c
You'll need a libgcc build with interworking enabled (our eabi gcc works) Confirmed to work on Sansa AMS Confirmed to boot on Gigabeat S Not working on PP, linker generates invalid branches when mixing ARM->thumb switches and long calls Build time will be about 50% longer, because the gcc wrapper script tries to build everything with -mthumb and falls back to default if it fails (for example if the file uses inline ARM-only assembly) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26760 a1c6a512-1295-4272-9138-f99709370657
80 lines
2.2 KiB
Python
Executable file
80 lines
2.2 KiB
Python
Executable file
#!/usr/bin/python
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# -*- coding: utf8 -*-
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# __________ __ ___.
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# Open \______ \ ____ ____ | | _\_ |__ _______ ___
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# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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# \/ \/ \/ \/ \/
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#
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# Copyright © 2010 Rafaël Carré <rafael.carre@gmail>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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import sys
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import os
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import subprocess
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import tempfile
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def run_gcc(args):
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os.execv(args[0], args) # run real gcc
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def get_output(args):
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output = False
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for i in args:
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if output == True:
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return i
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elif i == '-o':
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output = True
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def try_thumb(args, output):
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thumb_args = args + ['-mthumb']
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thumb_args[thumb_args.index('-o') + 1] = output
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thumb_gcc = subprocess.Popen(thumb_args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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(stdout, stderr) = thumb_gcc.communicate()
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if thumb_gcc.returncode != 0: # building failed
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return False
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# building with thumb succeeded, show our output
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#sys.stderr.write(bytes.decode(stderr))
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#sys.stdout.write(bytes.decode(stdout))
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sys.stderr.write(stderr)
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sys.stdout.write(stdout)
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return True
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##### main
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args=sys.argv[1:] # remove script path
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for opt in ['-E', '-MM', '-v', '--version']:
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if opt in args:
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run_gcc(args)
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output = get_output(args)
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split = output.rsplit('.o', 1)
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if len(split) == 1: # output doesn't end in .o
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run_gcc(args)
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dirname = os.path.dirname(output)
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thumb_output = tempfile.mktemp(suffix='.o', prefix=split[0], dir=dirname)
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args.append('-mthumb-interwork')
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if try_thumb(args, thumb_output):
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os.rename(thumb_output, output)
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sys.exit(0)
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else:
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#sys.stderr.write('skipped ' + os.path.basename(output) + '\n')
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run_gcc(args)
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