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create an array of altsyscallnames, which are the syscall names that the

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libc api uses. For example syscallnames[293] = "__sigprocmask14",
altsyscallnames[293] = "sigprocmask". This is so that things like dtrace
can use the system call names everyone uses. The array is sparse; if the
names were the same (or for compat names) they are not copied and the array
has NULL for them.
This commit is contained in:
christos 2015-09-24 14:30:52 +00:00
parent 5377c71070
commit a56c5627aa
1 changed files with 26 additions and 4 deletions
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30
sys/kern/makesyscalls.sh
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@ -1,4 +1,4 @@
# $NetBSD: makesyscalls.sh,v 1.153 2015/05/09 10:57:04 pooka Exp $
# $NetBSD: makesyscalls.sh,v 1.154 2015/09/24 14:30:52 christos Exp $
#
# Copyright (c) 1994, 1996, 2000 Christopher G. Demetriou
# All rights reserved.
@ -82,13 +82,17 @@ sysdcl="sysent.dcl"
sysprotos="sys.protos"
syscompat_pref="sysent."
sysent="sysent.switch"
sysnamesbottom="sysnames.bottom"
sysnamesbottom="$sysnames.bottom"
sysnamesfriendly="$sysnames.friendly"
rumptypes="rumphdr.types"
rumpprotos="rumphdr.protos"
systracetmp="systrace.$$"
systraceret="systraceret.$$"
trap "rm $sysdcl $sysprotos $sysent $sysnamesbottom $rumpsysent $rumptypes $rumpprotos $systracetmp $systraceret" 0
cleanup() {
rm $sysdcl $sysprotos $sysent $sysnamesbottom $sysnamesfriendly $rumpsysent $rumptypes $rumpprotos $systracetmp $systraceret
}
trap "cleanup" 0
# Awk program (must support nawk extensions)
# Use "awk" at Berkeley, "nawk" or "gawk" elsewhere.
@ -171,7 +175,8 @@ BEGIN {
sysdcl = \"$sysdcl\"
syscompat_pref = \"$syscompat_pref\"
sysent = \"$sysent\"
sysnamesbottom = \"$sysnamesbottom\"
sysnamesbottom = \"${sysnames}.bottom\"
sysnamesfriendly = \"${sysnames}.friendly\"
rumpprotos = \"$rumpprotos\"
rumptypes = \"$rumptypes\"
sys_nosys = \"$sys_nosys\"
@ -311,8 +316,12 @@ NR == 1 {
# hide the include files from it.
printf "#if defined(_KERNEL_OPT)\n" > sysnames
printf "#else /* _KERNEL_OPT */\n" > sysnamesbottom
printf "#include <sys/null.h>\n" > sysnamesbottom
printf "#endif /* _KERNEL_OPT */\n\n" > sysnamesbottom
printf "const char *const %s[] = {\n",namesname > sysnamesbottom
printf "\n\n/* libc style syscall names */\n" > sysnamesfriendly
printf "const char *const alt%s[] = {\n", namesname > sysnamesfriendly
printf " * created from%s\n */\n\n", $0 > sysnumhdr
printf "#ifndef _" constprefix "SYSCALL_H_\n" > sysnumhdr
@ -442,6 +451,7 @@ $1 ~ /^#/ && intable {
print > sysnumhdr
print > sysprotos
print > sysnamesbottom
print > sysnamesfriendly
print > systrace
print > systracetmp
print > systraceret
@ -852,6 +862,12 @@ function putent(type, compatwrap) {
# output syscall name for names table
printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, funcalias) \
> sysnamesbottom
if (compatwrap_ != "" || fbase == funcalias)
printf("\t/* %3d */\tNULL, /* %s%s */\n", syscall, \
compatwrap_, funcalias) > sysnamesfriendly
else
printf("\t/* %3d */\t\"%s%s\",\n", syscall, compatwrap_, \
fbase) > sysnamesfriendly
# output syscall number of header, if appropriate
if (type == "STD" || type == "NOARGS" || type == "INDIR" || \
@ -1041,6 +1057,8 @@ $2 == "OBSOL" || $2 == "UNIMPL" || $2 == "EXCL" || $2 == "IGNORED" {
print fillerpsysent(syscall, rumpnoflags, rumpnosys, comment) > rumpsysent
printf("\t/* %3d */\t\"#%d (%s)\",\n", syscall, syscall, comment) \
> sysnamesbottom
printf("\t/* %3d */\tNULL, /* %s */\n", syscall, comment) \
> sysnamesfriendly
if ($2 != "UNIMPL")
printf("\t\t\t\t/* %d is %s */\n", syscall, comment) > sysnumhdr
syscall++
@ -1106,6 +1124,8 @@ END {
print fillerpsysent(syscall, rumpnoflags, rumpnosys, "filler") > rumpsysent
printf("\t/* %3d */\t\"# filler\",\n", syscall) \
> sysnamesbottom
printf("\t/* %3d */\tNULL, /* filler */\n", syscall) \
> sysnamesfriendly
syscall++
}
}
@ -1117,6 +1137,7 @@ END {
if (haverumpcalls)
printf("#endif /* !RUMP_CLIENT */\n") > sysprotos
printf("};\n") > sysnamesbottom
printf("};\n") > sysnamesfriendly
printf("#define\t%sMAXSYSCALL\t%d\n", constprefix, maxsyscall) > sysnumhdr
if (nsysent)
printf("#define\t%sNSYSENT\t%d\n", constprefix, nsysent) > sysnumhdr
@ -1132,6 +1153,7 @@ echo "};" >> $sysautoload
printf "\n#endif /* _RUMP_RUMP_SYSCALLS_H_ */\n" >> $rumpprotos
cat $sysdcl $sysent > $syssw
cat $sysnamesbottom >> $sysnames
cat $sysnamesfriendly >> $sysnames
cat $rumpsysent >> $rumpcalls
touch $rumptypes