ac1ce77a23
Usage -1 as argument count in syscallent tables
necessitates the check for it, a-la:
if (sysent[tcp->scno].nargs != -1)
tcp->u_nargs = sysent[tcp->scno].nargs;
else
tcp->u_nargs = MAX_ARGS;
which is stupid: we waste cycles checking something which
is constant and known at compile time.
* defs.h: Make struct sysent::nargs unsigned.
* freebsd/i386/syscallent.h: Replace nargs of -1 with MA.
* linux/s390/syscallent.h: Likewise.
* linux/s390x/syscallent.h: Likewise.
* svr4/syscallent.h: Likewise.
* freebsd/syscalls.pl: Likewise in generator script.
* syscallent.sh: Likewise in generator script.
* syscall.c: Add define MA MAX_ARGS / undef MA around includes
of syscallent[N].h.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
76 lines
2.6 KiB
Bash
Executable File
76 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
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# Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
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# All rights reserved.
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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. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# $Id$
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cat ${1+"$@"} |
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sed -n 's/^#[ ]*define[ ][ ]*SYS_\([^ ]*\)[ ]*[^0-9]*\([0-9]*\).*$/\1 \2/p
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s/^#[ ]*define[ ][ ]*__NR_\([^ ]*\)[ ]*[^0-9]*\([0-9]*\).*$/\1 \2/p
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s/^#[ ]*define[ ][ ]*__NR_\([^ ]*\)[ ]*[^0-9()]*(__NR_Linux + \([0-9]*\))$/\1 \2/p' |
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sort -k2n | uniq |
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awk '
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BEGIN {
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tabs = "\t\t\t\t\t\t\t\t"
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call = -1;
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}
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{
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while (++call < $2) {
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f = "printargs"
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n = "SYS_" call
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s = "\t{ MA,\t0,\t"
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s = s f ","
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s = s substr(tabs, 1, 24/8 - int((length(f) + 1)/8))
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s = s "\"" n "\""
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s = s substr(tabs, 1, 16/8 - int((length(n) + 2)/8))
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s = s "}, /* " call " */"
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print s
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}
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f = "sys_" $1
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n = $1
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s = "\t{ MA,\t0,\t"
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s = s f ","
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s = s substr(tabs, 1, 24/8 - int((length(f) + 1)/8))
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s = s "\"" n "\""
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s = s substr(tabs, 1, 16/8 - int((length(n) + 2)/8))
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s = s "}, /* " call " */"
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print s
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}
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END {
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limit = call + 100
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while (++call < limit) {
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f = "printargs"
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n = "SYS_" call
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s = "\t{ MA,\t0,\t"
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s = s f ","
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s = s substr(tabs, 1, 24/8 - int((length(f) + 1)/8))
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s = s "\"" n "\""
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s = s substr(tabs, 1, 16/8 - int((length(n) + 2)/8))
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s = s "}, /* " call " */"
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print s
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}
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}
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'
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