| 1 | #!/bin/sh |
| 2 | |
| 3 | # Generate system call probe description macros from syscall metadata dump file. |
| 4 | # example usage: |
| 5 | # lttng-syscalls-generate-headers.sh 3.0.4 x86-64-syscalls-3.0.4 |
| 6 | |
| 7 | INPUTDIR=$1 |
| 8 | INPUTFILE=$2 |
| 9 | INPUT=${INPUTDIR}/${INPUTFILE} |
| 10 | SRCFILE=gen.tmp.0 |
| 11 | TMPFILE=gen.tmp.1 |
| 12 | |
| 13 | cp ${INPUT} ${SRCFILE} |
| 14 | |
| 15 | #Cleanup |
| 16 | sed 's/^\[.*\] //g' ${SRCFILE} > ${TMPFILE} |
| 17 | mv ${TMPFILE} ${SRCFILE} |
| 18 | |
| 19 | sed 's/^syscall sys_\([^ ]*\)/syscall \1/g' ${SRCFILE} > ${TMPFILE} |
| 20 | mv ${TMPFILE} ${SRCFILE} |
| 21 | |
| 22 | #Filter |
| 23 | |
| 24 | #select only syscalls we currently support |
| 25 | #move non-pointers with arguments to a integer-only file. |
| 26 | CLASS=integers |
| 27 | grep -v "\\*\|cap_user_header_t" ${SRCFILE} > ${TMPFILE} |
| 28 | mv ${TMPFILE} ${SRCFILE} |
| 29 | |
| 30 | #TODO |
| 31 | # move all system calls using pointers to a separate file. |
| 32 | #CLASS=pointers |
| 33 | #grep "\\*\|cap_#user_header_t" ${SRCFILE} > ${TMPFILE} |
| 34 | #mv ${TMPFILE} ${SRCFILE} |
| 35 | |
| 36 | #TODO |
| 37 | #move those without arguments to a separate file. |
| 38 | #CLASS=noargs |
| 39 | #grep "^syscall [^ ]* nr [^ ]* nbargs 0 " ${SRCFILE} > ${TMPFILE} |
| 40 | #mv ${TMPFILE} ${SRCFILE} |
| 41 | |
| 42 | HEADER=headers/${INPUTFILE}-${CLASS}.h |
| 43 | |
| 44 | echo "/* THIS FILE IS AUTO-GENERATED. DO NOT EDIT */" > ${HEADER} |
| 45 | |
| 46 | echo \ |
| 47 | "#ifndef CREATE_SYSCALL_TABLE |
| 48 | |
| 49 | #undef TRACE_SYSTEM |
| 50 | #define TRACE_SYSTEM syscalls |
| 51 | |
| 52 | #if !defined(_TRACE_SYSCALLS_H) || defined(TRACE_HEADER_MULTI_READ) |
| 53 | #define _TRACE_SYSCALLS_H |
| 54 | |
| 55 | #include <linux/tracepoint.h> |
| 56 | #include <linux/syscalls.h> |
| 57 | " >> ${HEADER} |
| 58 | |
| 59 | #TODO 0 |
| 60 | |
| 61 | # types: 4 |
| 62 | # args 5 |
| 63 | |
| 64 | NRARGS=1 |
| 65 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 66 | sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\ |
| 67 | 'types: (\([^)]*\)) '\ |
| 68 | 'args: (\([^)]*\))/'\ |
| 69 | 'TRACE_EVENT(sys_\1,\n'\ |
| 70 | ' TP_PROTO(\4 \5),\n'\ |
| 71 | ' TP_ARGS(\5),\n'\ |
| 72 | ' TP_STRUCT__entry(__field(\4, \5)),\n'\ |
| 73 | ' TP_fast_assign(tp_assign(\5, \5)),\n'\ |
| 74 | ' TP_printk()\n'\ |
| 75 | ')/g'\ |
| 76 | ${TMPFILE} >> ${HEADER} |
| 77 | |
| 78 | # types: 4 5 |
| 79 | # args 6 7 |
| 80 | |
| 81 | NRARGS=2 |
| 82 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 83 | sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\ |
| 84 | 'types: (\([^,]*\), \([^)]*\)) '\ |
| 85 | 'args: (\([^,]*\), \([^)]*\))/'\ |
| 86 | 'TRACE_EVENT(sys_\1,\n'\ |
| 87 | ' TP_PROTO(\4 \6, \5 \7),\n'\ |
| 88 | ' TP_ARGS(\6, \7),\n'\ |
| 89 | ' TP_STRUCT__entry(__field(\4, \6) __field(\5, \7)),\n'\ |
| 90 | ' TP_fast_assign(tp_assign(\6, \6) tp_assign(\7, \7)),\n'\ |
| 91 | ' TP_printk()\n'\ |
| 92 | ')/g'\ |
| 93 | ${TMPFILE} >> ${HEADER} |
| 94 | |
| 95 | # types: 4 5 6 |
| 96 | # args 7 8 9 |
| 97 | |
| 98 | NRARGS=3 |
| 99 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 100 | sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\ |
| 101 | 'types: (\([^,]*\), \([^,]*\), \([^)]*\)) '\ |
| 102 | 'args: (\([^,]*\), \([^,]*\), \([^)]*\))/'\ |
| 103 | 'TRACE_EVENT(sys_\1,\n'\ |
| 104 | ' TP_PROTO(\4 \7, \5 \8, \6 \9),\n'\ |
| 105 | ' TP_ARGS(\7, \8, \9),\n'\ |
| 106 | ' TP_STRUCT__entry(__field(\4, \7) __field(\5, \8) __field(\6, \9)),\n'\ |
| 107 | ' TP_fast_assign(tp_assign(\7, \7) tp_assign(\8, \8) tp_assign(\9, \9)),\n'\ |
| 108 | ' TP_printk()\n'\ |
| 109 | ')/g'\ |
| 110 | ${TMPFILE} >> ${HEADER} |
| 111 | |
| 112 | |
| 113 | # types: 4 5 6 7 |
| 114 | # args 8 9 10 11 |
| 115 | |
| 116 | NRARGS=4 |
| 117 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 118 | sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\ |
| 119 | 'types: (\([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\)) '\ |
| 120 | 'args: (\([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\))/'\ |
| 121 | 'TRACE_EVENT(sys_\1,\n'\ |
| 122 | ' TP_PROTO(\4 \8, \5 \9, \6 \10, \7 \11),\n'\ |
| 123 | ' TP_ARGS(\8, \9, \10, \11),\n'\ |
| 124 | ' TP_STRUCT__entry(__field(\4, \8) __field(\5, \9) __field(\6, \10) __field(\7, \11)),\n'\ |
| 125 | ' TP_fast_assign(tp_assign(\8, \8) tp_assign(\9, \9) tp_assign(\10, \10) tp_assign(\11, \11)),\n'\ |
| 126 | ' TP_printk()\n'\ |
| 127 | ')/g'\ |
| 128 | ${TMPFILE} >> ${HEADER} |
| 129 | |
| 130 | # types: 4 5 6 7 8 |
| 131 | # args 9 10 11 12 13 |
| 132 | |
| 133 | NRARGS=5 |
| 134 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 135 | sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\ |
| 136 | 'types: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\)) '\ |
| 137 | 'args: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\))/'\ |
| 138 | 'TRACE_EVENT(sys_\1,\n'\ |
| 139 | ' TP_PROTO(\4 \9, \5 \10, \6 \11, \7 \12, \8 \13),\n'\ |
| 140 | ' TP_ARGS(\9, \10, \11, \12, \13),\n'\ |
| 141 | ' TP_STRUCT__entry(__field(\4, \9) __field(\5, \10) __field(\6, \11) __field(\7, \12) __field(\8, \13)),\n'\ |
| 142 | ' TP_fast_assign(tp_assign(\9, \9) tp_assign(\10, \10) tp_assign(\11, \11) tp_assign(\12, \12) tp_assign(\13, \13)),\n'\ |
| 143 | ' TP_printk()\n'\ |
| 144 | ')/g'\ |
| 145 | ${TMPFILE} >> ${HEADER} |
| 146 | |
| 147 | |
| 148 | # types: 4 5 6 7 8 9 |
| 149 | # args 10 11 12 13 14 15 |
| 150 | |
| 151 | NRARGS=6 |
| 152 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} > ${TMPFILE} |
| 153 | sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) '\ |
| 154 | 'types: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\)) '\ |
| 155 | 'args: (\([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^,]*\), \([^)]*\))/'\ |
| 156 | 'TRACE_EVENT(sys_\1,\n'\ |
| 157 | ' TP_PROTO(\4 \10, \5 \11, \6 \12, \7 \13, \8 \14, \9 \15),\n'\ |
| 158 | ' TP_ARGS(\10, \11, \12, \13, \14, \15),\n'\ |
| 159 | ' TP_STRUCT__entry(__field(\4, \10) __field(\5, \11) __field(\6, \12) __field(\7, \13) __field(\8, \14) __field(\9, \15)),\n'\ |
| 160 | ' TP_fast_assign(tp_assign(\10, \10) tp_assign(\11, \11) tp_assign(\12, 12) tp_assign(\13, \13) tp_assign(\14, \14) tp_assign(\15, \15)),\n'\ |
| 161 | ' TP_printk()\n'\ |
| 162 | ')/g'\ |
| 163 | ${TMPFILE} >> ${HEADER} |
| 164 | |
| 165 | # Macro for tracing syscall table |
| 166 | |
| 167 | rm -f ${TMPFILE} |
| 168 | for NRARGS in $(seq 1 6); do |
| 169 | grep "^syscall [^ ]* nr [^ ]* nbargs ${NRARGS} " ${SRCFILE} >> ${TMPFILE} |
| 170 | done |
| 171 | |
| 172 | echo \ |
| 173 | " |
| 174 | #endif /* _TRACE_SYSCALLS_H */ |
| 175 | |
| 176 | /* This part must be outside protection */ |
| 177 | #include \"../../../probes/define_trace.h\" |
| 178 | |
| 179 | #else /* CREATE_SYSCALL_TABLE */ |
| 180 | " >> ${HEADER} |
| 181 | |
| 182 | sed 's/^syscall \([^ ]*\) nr \([^ ]*\) nbargs \([^ ]*\) .*$/'\ |
| 183 | 'TRACE_SYSCALL_TABLE(sys_\1, \2, \3)/g'\ |
| 184 | ${TMPFILE} >> ${HEADER} |
| 185 | |
| 186 | echo -n \ |
| 187 | " |
| 188 | #endif /* CREATE_SYSCALL_TABLE */ |
| 189 | " >> ${HEADER} |
| 190 | |
| 191 | rm -f ${INPUTFILE}.tmp |
| 192 | rm -f ${TMPFILE} |
| 193 | rm -f ${SRCFILE} |