101 lines
3.6 KiB
Awk
101 lines
3.6 KiB
Awk
# $NetBSD: genassym.awk,v 1.3 1997/10/04 16:56:49 gwr Exp $
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#
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# Copyright (c) 1997 The NetBSD Foundation, Inc.
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# All rights reserved.
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#
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# This code is derived from software contributed to The NetBSD Foundation
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# by Gordon W. Ross
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. All advertising materials mentioning features or use of this software
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# must display the following acknowledgement:
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# This product includes software developed by the NetBSD
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# Foundation, Inc. and its contributors.
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# 4. Neither the name of The NetBSD Foundation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# This parses the assembly file genassym.s and translates each
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# element of the assyms[] array into a cpp define. The assembly
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# file genassym.s is simply compiled from plain old C code. See
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# src/sys/arch/sun3/sun3/genassym.c for an example of the C code,
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# and see src/sys/arch/sun3/conf/Makefile.sun3 for an example of
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# the make rules that build assym.h using this program.
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#
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# Using actual C code for this (instead of genassym.cf)
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# has the advantage that "make depend" automatically
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# tracks dependencies of this C code on the (many)
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# header files used here. Also, this awk script is
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# much smaller and simpler than sys/kern/genassym.sh.
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#
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# Both this method and the genassym.cf method have the
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# disadvantage that they depend on gcc-specific features.
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# This method depends on the format of assembly output for
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# data, and the genassym.cf method depends on features of
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# the gcc asm() statement (inline assembly).
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#
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# Matthias Pfaller deserves credit for the basic idea of
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# translating cc output (assembly) into an assym.h file.
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# This variant of the method was developed by Gordon Ross.
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BEGIN {
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len = 0;
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val = 0;
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str = "";
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translate = 0;
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}
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# This marks the beginning of the part we should translate.
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# Note: leading _ is absent on some platforms (e.g. alpha).
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/^_?assyms:/ {
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translate = 1;
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}
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/^\t\.ascii/ {
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if (!translate)
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next;
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# Get NAME from "NAME\0"
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len = length($2);
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str = substr($2,2,len-4);
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printf("#define\t%s\t", str);
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next;
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}
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/^\t\.(skip|zero)/ {
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next;
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}
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/^\t\.(long|quad)/ {
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if (!translate)
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next;
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printf("%s\n", $2);
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next;
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}
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# This marks the end of the part we should translate.
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# Note: leading _ is absent on some platforms (e.g. alpha).
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/^_?nassyms:/ {
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exit;
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}
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