1#! /bin/sh - 2# @(#)makesyscalls.sh 7.5 (Berkeley) 06/21/90 3 4set -e 5 6# name of compat option: 7compat=COMPAT_43 8 9# output files: 10sysnames="syscalls.c" 11syshdr="../sys/syscall.h" 12syssw="init_sysent.c" 13 14# tmp files: 15sysdcl="sysent.dcl" 16syscompat="sysent.compat" 17sysent="sysent.switch" 18 19trap "rm $sysdcl $syscompat $sysent" 0 20 21case $# in 22 0) echo "Usage: $0 input-file" 1>&2 23 exit 1 24 ;; 25esac 26 27awk < $1 " 28 BEGIN { 29 sysdcl = \"$sysdcl\" 30 syscompat = \"$syscompat\" 31 sysent = \"$sysent\" 32 sysnames = \"$sysnames\" 33 syshdr = \"$syshdr\" 34 compat = \"$compat\" 35 infile = \"$1\" 36 "' 37 38 printf "/*\n * System call switch table.\n *\n" > sysdcl 39 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysdcl 40 41 printf "\n#ifdef %s\n", compat > syscompat 42 printf "#define compat(n, name) n, o/**/name\n\n" > syscompat 43 44 printf "/*\n * System call names.\n *\n" > sysnames 45 printf " * DO NOT EDIT-- this file is automatically generated.\n" > sysnames 46 47 printf "/*\n * System call numbers.\n *\n" > syshdr 48 printf " * DO NOT EDIT-- this file is automatically generated.\n" > syshdr 49 } 50 NR == 1 { 51 printf " * created from%s\n */\n\n", $0 > sysdcl 52 printf "#include \"param.h\"\n" > sysdcl 53 printf "#include \"systm.h\"\n\n" > sysdcl 54 printf "int\tnosys();\n\n" > sysdcl 55 56 printf "struct sysent sysent[] = {\n" > sysent 57 58 printf " * created from%s\n */\n\n", $0 > sysnames 59 printf "char *syscallnames[] = {\n" > sysnames 60 61 printf " * created from%s\n */\n\n", $0 > syshdr 62 next 63 } 64 NF == 0 || $1 ~ /^;/ { 65 next 66 } 67 $1 ~ /^#[ ]*if/ { 68 print > sysent 69 print > sysdcl 70 print > syscompat 71 print > sysnames 72 savesyscall = syscall 73 next 74 } 75 $1 ~ /^#[ ]*else/ { 76 print > sysent 77 print > sysdcl 78 print > syscompat 79 print > sysnames 80 syscall = savesyscall 81 next 82 } 83 $1 ~ /^#/ { 84 print > sysent 85 print > sysdcl 86 print > syscompat 87 print > sysnames 88 next 89 } 90 syscall != $1 { 91 printf "%s: line %d: syscall number out of sync at %d\n", \ 92 infile, NR, syscall 93 printf "line is:\n" 94 print 95 exit 1 96 } 97 { comment = $4 98 for (i = 5; i <= NF; i++) 99 comment = comment " " $i 100 if (NF < 5) 101 $5 = $4 102 } 103 $2 == "STD" { 104 printf("int\t%s();\n", $4) > sysdcl 105 printf("\t%d, %s,\t\t\t/* %d = %s */\n", \ 106 $3, $4, syscall, $5) > sysent 107 printf("\t\"%s\",\t\t\t/* %d = %s */\n", \ 108 $5, syscall, $5) > sysnames 109 printf("#define\tSYS_%s\t%d\n", \ 110 $5, syscall) > syshdr 111 syscall++ 112 next 113 } 114 $2 == "COMPAT" { 115 printf("int\to%s();\n", $4) > syscompat 116 printf("\tcompat(%d,%s),\t\t/* %d = old %s */\n", \ 117 $3, $4, syscall, $5) > sysent 118 printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \ 119 $5, syscall, $5) > sysnames 120 printf("\t\t\t\t/* %d is old %s */\n", \ 121 syscall, comment) > syshdr 122 syscall++ 123 next 124 } 125 $2 == "LIBCOMPAT" { 126 printf("int\to%s();\n", $4) > syscompat 127 printf("\tcompat(%d,%s),\t\t/* %d = old %s */\n", \ 128 $3, $4, syscall, $5) > sysent 129 printf("\t\"old.%s\",\t\t/* %d = old %s */\n", \ 130 $5, syscall, $5) > sysnames 131 printf("#define\tSYS_%s\t%d\t/* compatibility; still used by libc */\n", \ 132 $5, syscall) > syshdr 133 syscall++ 134 next 135 } 136 $2 == "OBSOL" { 137 printf("\t0, nosys,\t\t\t/* %d = obsolete %s */\n", \ 138 syscall, comment) > sysent 139 printf("\t\"obs_%s\",\t\t\t/* %d = obsolete %s */\n", \ 140 $4, syscall, comment) > sysnames 141 printf("\t\t\t\t/* %d is obsolete %s */\n", \ 142 syscall, comment) > syshdr 143 syscall++ 144 next 145 } 146 $2 == "UNIMPL" { 147 printf("\t0, nosys,\t\t\t/* %d = %s */\n", \ 148 syscall, comment) > sysent 149 printf("\t\"#%d\",\t\t\t/* %d = %s */\n", \ 150 syscall, syscall, comment) > sysnames 151 syscall++ 152 next 153 } 154 { 155 printf "%s: line %d: unrecognized keyword %s\n", infile, NR, $2 156 exit 1 157 } 158 END { 159 printf("\n#else /* %s */\n", compat) > syscompat 160 printf("#define compat(n, name) 0, nosys\n") > syscompat 161 printf("#endif /* %s */\n\n", compat) > syscompat 162 163 printf("};\n\n") > sysent 164 printf("int\tnsysent = sizeof(sysent) / sizeof(sysent[0]);\n") > sysent 165 166 printf("};\n") > sysnames 167 } ' 168 169cat $sysdcl $syscompat $sysent >$syssw 170 171chmod 444 $sysnames $syshdr $syssw 172