mirror of https://gitlab.com/ita1024/waf.git
98 lines
2.3 KiB
Python
98 lines
2.3 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# Tool to embed file into objects
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__author__ = __maintainer__ = "Jérôme Carretero <cJ-waf@zougloub.eu>"
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__copyright__ = "Jérôme Carretero, 2014"
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"""
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This tool allows to embed file contents in object files (.o).
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It is not exactly portable, and the file contents are reachable
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using various non-portable fashions.
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The goal here is to provide a functional interface to the embedding
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of file data in objects.
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See the ``playground/embedded_resources`` example for an example.
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Usage::
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bld(
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name='pipeline',
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# ^ Reference this in use="..." for things using the generated code
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features='file_to_object',
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source='some.file',
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# ^ Name of the file to embed in binary section.
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)
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Known issues:
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- Currently only handles elf files with GNU ld.
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- Destination is named like source, with extension renamed to .o
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eg. some.file -> some.o
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"""
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import os
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from waflib import Task, Utils, TaskGen, Errors
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class file_to_object(Task.Task):
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color = 'CYAN'
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dep_vars = ('DEST_CPU', 'DEST_BINFMT')
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def run(self):
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name = []
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for i, x in enumerate(self.inputs[0].name):
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if x.isalnum():
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name.append(x)
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else:
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name.append('_')
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file = self.inputs[0].abspath()
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size = os.path.getsize(file)
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if self.env.DEST_CPU in ('x86_64', 'ia', 'aarch64'):
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unit = 'quad'
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align = 8
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elif self.env.DEST_CPU in ('x86','arm', 'thumb', 'm68k'):
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unit = 'long'
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align = 4
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else:
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raise Errors.WafError("Unsupported DEST_CPU, please report bug!")
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name = "_binary_" + "".join(name)
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rodata = ".section .rodata"
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if self.env.DEST_BINFMT == "mac-o":
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name = "_" + name
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rodata = ".section __TEXT,__const"
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with open(self.outputs[0].abspath(), 'w') as f:
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f.write(\
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"""
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.global %(name)s_start
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.global %(name)s_end
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.global %(name)s_size
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%(rodata)s
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%(name)s_start:
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.incbin "%(file)s"
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%(name)s_end:
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.align %(align)d
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%(name)s_size:
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.%(unit)s 0x%(size)x
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""" % locals())
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@TaskGen.feature('file_to_object')
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@TaskGen.before_method('process_source')
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def tg_file_to_object(self):
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bld = self.bld
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src = self.to_nodes(self.source)
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assert len(src) == 1
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src = src[0]
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tgt = src.change_ext('-wrap.S')
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task = self.create_task('file_to_object',
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src, tgt, cwd=src.parent.abspath())
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self.source = [tgt]
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def configure(conf):
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conf.load('gas')
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