BSD 4.4 Lite Kernel Sources

1 files changed, 171 insertions, 0 deletions

diff --git a/sys/kern/makesyscalls.sh b/sys/kern/makesyscalls.sh
new file mode 100644
index 0000000..0ddea0c
--- /dev/null
+++ b/sys/kern/makesyscalls.sh
@@ -0,0 +1,171 @@
+#! /bin/sh -
+#	@(#)makesyscalls.sh	8.1 (Berkeley) 6/10/93
+
+set -e
+
+# name of compat option:
+compat=COMPAT_43
+
+# output files:
+sysnames="syscalls.c"
+syshdr="../sys/syscall.h"
+syssw="init_sysent.c"
+
+# tmp files:
+sysdcl="sysent.dcl"
+syscompat="sysent.compat"
+sysent="sysent.switch"
+
+trap "rm $sysdcl $syscompat $sysent" 0
+
+case $# in
+    0)	echo "Usage: $0 input-file" 1>&2
+	exit 1
+	;;
+esac
+
+awk < $1 "
+	BEGIN {
+		sysdcl = \"$sysdcl\"
+		syscompat = \"$syscompat\"
+		sysent = \"$sysent\"
+		sysnames = \"$sysnames\"
+		syshdr = \"$syshdr\"
+		compat = \"$compat\"
+		infile = \"$1\"
+		"'
+
+		printf "/*\n * System call switch table.\n *\n" > sysdcl
+		printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl
+
+		printf "\n#ifdef %s\n", compat > syscompat
+		printf "#define compat(n, name) n, __CONCAT(o,name)\n\n" > syscompat
+
+		printf "/*\n * System call names.\n *\n" > sysnames
+		printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames
+
+		printf "/*\n * System call numbers.\n *\n" > syshdr
+		printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr
+	}
+	NR == 1 {
+		printf " * created from%s\n */\n\n", $0 > sysdcl
+		printf "#include <sys/param.h>\n" > sysdcl
+		printf "#include <sys/systm.h>\n\n" > sysdcl
+		printf "int\tnosys();\n\n" > sysdcl
+
+		printf "struct sysent sysent[] = {\n" > sysent
+
+		printf " * created from%s\n */\n\n", $0 > sysnames
+		printf "char *syscallnames[] = {\n" > sysnames
+
+		printf " * created from%s\n */\n\n", $0 > syshdr
+		next
+	}
+	NF == 0 || $1 ~ /^;/ {
+		next
+	}
+	$1 ~ /^#[ 	]*if/ {
+		print > sysent
+		print > sysdcl
+		print > syscompat
+		print > sysnames
+		savesyscall = syscall
+		next
+	}
+	$1 ~ /^#[ 	]*else/ {
+		print > sysent
+		print > sysdcl
+		print > syscompat
+		print > sysnames
+		syscall = savesyscall
+		next
+	}
+	$1 ~ /^#/ {
+		print > sysent
+		print > sysdcl
+		print > syscompat
+		print > sysnames
+		next
+	}
+	syscall != $1 {
+		printf "%s: line %d: syscall number out of sync at %d\n", \
+		   infile, NR, syscall
+		printf "line is:\n"
+		print
+		exit 1
+	}
+	{	comment = $4
+		for (i = 5; i <= NF; i++)
+			comment = comment " " $i
+		if (NF < 5)
+			$5 = $4
+	}
+	$2 == "STD" {
+		printf("int\t%s();\n", $4) > sysdcl
+		printf("\t{ %d, %s },\t\t\t/* %d = %s */\n", \
+		    $3, $4, syscall, $5) > sysent
+		printf("\t\"%s\",\t\t\t/* %d = %s */\n", \
+		    $5, syscall, $5) > sysnames
+		printf("#define\tSYS_%s\t%d\n", \
+		    $5, syscall) > syshdr
+		syscall++
+		next
+	}
+	$2 == "COMPAT" {
+		printf("int\to%s();\n", $4) > syscompat
+		printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n", \
+		    $3, $4, syscall, $5) > sysent
+		printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \
+		    $5, syscall, $5) > sysnames
+		printf("\t\t\t\t/* %d is old %s */\n", \
+		    syscall, comment) > syshdr
+		syscall++
+		next
+	}
+	$2 == "LIBCOMPAT" {
+		printf("int\to%s();\n", $4) > syscompat
+		printf("\t{ compat(%d,%s) },\t\t/* %d = old %s */\n", \
+		    $3, $4, syscall, $5) > sysent
+		printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \
+		    $5, syscall, $5) > sysnames
+		printf("#define\tSYS_%s\t%d\t/* compatibility; still used by libc */\n", \
+		    $5, syscall) > syshdr
+		syscall++
+		next
+	}
+	$2 == "OBSOL" {
+		printf("\t{ 0, nosys },\t\t\t/* %d = obsolete %s */\n", \
+		    syscall, comment) > sysent
+		printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n", \
+		    $4, syscall, comment) > sysnames
+		printf("\t\t\t\t/* %d is obsolete %s */\n", \
+		    syscall, comment) > syshdr
+		syscall++
+		next
+	}
+	$2 == "UNIMPL" {
+		printf("\t{ 0, nosys },\t\t\t/* %d = %s */\n", \
+		    syscall, comment) > sysent
+		printf("\t\"#%d\",\t\t\t/* %d = %s */\n", \
+		    syscall, syscall, comment) > sysnames
+		syscall++
+		next
+	}
+	{
+		printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2
+		exit 1
+	}
+	END {
+		printf("\n#else /* %s */\n", compat) > syscompat
+		printf("#define compat(n, name) 0, nosys\n") > syscompat
+		printf("#endif /* %s */\n\n", compat) > syscompat
+
+		printf("};\n\n") > sysent
+		printf("int\tnsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent
+
+		printf("};\n") > sysnames
+	} '
+
+cat $sysdcl $syscompat $sysent >$syssw
+
+chmod 444 $sysnames $syshdr $syssw