ext/B/ramblings/runtime.porting

   1 Notes on porting the perl runtime PP engine.
   2 Importance: 1 = who cares?, 10 = vital
   3 Difficulty: 1 = trivial, 10 = very difficult. Level assumes a
   4 reasonable implementation of the SV and OP API already ported.
   5
   6 OP              Import  Diff    Comments
   7 null            10      1
   8 stub            10      1
   9 scalar          10      1
  10 pushmark        10      1       PUSHMARK
  11 wantarray       7       3       cxstack, dopoptosub
  12 const           10      1
  13 gvsv            10      1       save_scalar
  14 gv              10      1
  15 gelem           3       3
  16 padsv           10      2       SAVECLEARSV, provide_ref
  17 padav           10      2
  18 padhv           10      2
  19 padany          1       1
  20 pushre          7       3       pushes an op. Blech.
  21 rv2gv           6       5
  22 rv2sv           10      4
  23 av2arylen       7       3       sv_magic
  24 rv2cv           8       5       sv_2cv
  25 anoncode        7       6       cv_clone
  26 prototype       4       4       sv_2cv
  27 refgen          8       3
  28 srefgen         8       2
  29 ref             8       3
  30 bless           7       3
  31 backtick        5       4
  32 glob            5       2       do_readline
  33 readline        8       2       do_readline
  34 rcatline        8       2
  35 regcmaybe       8       1
  36 regcreset       8       1
  37 regcomp         8       9       pregcomp
  38 match           8       10
  39 qr              8       1
  40 subst           8       10
  41 substcont       8       7
  42 trans           7       4       do_trans
  43 sassign         10      3       mg_find, SvSETMAGIC
  44 aassign         10      5
  45 chop            8       3       do_chop
  46 schop           8       3       do_chop
  47 chomp           8       3       do_chomp
  48 schomp          8       3       do_chomp
  49 defined         10      2
  50 undef           10      3
  51 study           4       5
  52 pos             8       3       PVLV, mg_find
  53 preinc          10      2       sv_inc, SvSETMAGIC
  54 i_preinc
  55 predec          10      2       sv_dec, SvSETMAGIC
  56 i_predec
  57 postinc         10      2       sv_dec, SvSETMAGIC
  58 i_postinc
  59 postdec         10      2       sv_dec, SvSETMAGIC
  60 i_postdec
  61 pow             10      1
  62 multiply        10      1
  63 i_multiply      10      1
  64 divide          10      2
  65 i_divide        10      1
  66 modulo          10      2
  67 i_modulo        10      1
  68 repeat          6       4
  69 add             10      1
  70 i_add           10      1
  71 subtract        10      1
  72 i_subtract      10      1
  73 concat          10      2       mg_get
  74 stringify       10      2       sv_setpvn
  75 left_shift      10      1
  76 right_shift     10      1
  77 lt              10      1
  78 i_lt            10      1
  79 gt              10      1
  80 i_gt            10      1
  81 le              10      1
  82 i_le            10      1
  83 ge              10      1
  84 i_ge            10      1
  85 eq              10      1
  86 i_eq            10      1
  87 ne              10      1
  88 i_ne            10      1
  89 ncmp            10      1
  90 i_ncmp          10      1
  91 slt             10      2
  92 sgt             10      2
  93 sle             10      2
  94 sge             10      2
  95 seq             10      2       sv_eq
  96 sne             10      2
  97 scmp            10      2
  98 bit_and         10      2
  99 bit_xor         10      2
 100 bit_or          10      2
 101 negate          10      3
 102 i_negate        10      1
 103 not             10      1
 104 complement      10      3
 105 atan2           6       1
 106 sin             6       1
 107 cos             6       1
 108 rand            5       2
 109 srand           5       2
 110 exp             6       1
 111 log             6       2
 112 sqrt            6       2
 113 int             10      2
 114 hex             9       2
 115 oct             9       2
 116 abs             10      1
 117 length          10      1
 118 substr          10      4       PVLV
 119 vec             5       4
 120 index           9       3
 121 rindex          9       3
 122 sprintf         9       4       do_sprintf
 123 formline        6       7
 124 ord             6       2
 125 chr             6       2
 126 crypt           3       2
 127 ucfirst         6       2
 128 lcfirst         6       2
 129 uc              6       2
 130 lc              6       2
 131 quotemeta       6       3
 132 rv2av           10      3       save_svref, mg_get, save_ary
 133 aelemfast       10      2       av_fetch
 134 aelem           10      3
 135 aslice          9       4
 136 each            10      3       hv_iternext
 137 values          10      3       do_kv
 138 keys            10      3       do_kv
 139 delete          10      3
 140 exists          10      3
 141 rv2hv           10      3       save_svref, mg_get, save_ary, do_kv
 142 helem           10      3       save_svref, provide_ref
 143 hslice          9       4
 144 unpack          9       6       lengthy
 145 pack            9       6       lengthy
 146 split           9       9
 147 join            10      4       do_join
 148 list            10      2
 149 lslice          9       4
 150 anonlist        10      2
 151 anonhash        10      3
 152 splice          9       6
 153 push            10      2
 154 pop             10      2
 155 shift           10      2
 156 unshift         10      2
 157 sort            6       7
 158 reverse         9       4
 159 grepstart       6       5       modifies flow of control
 160 grepwhile       6       5       modifies flow of control
 161 mapstart        1       1
 162 mapwhile        6       5       modifies flow of control
 163 range           7       3       modifies flow of control
 164 flip            7       4       modifies flow of control
 165 flop            7       4       modifies flow of control
 166 and             10      3       modifies flow of control
 167 or              10      3       modifies flow of control
 168 xor
 169 cond_expr       10      3       modifies flow of control
 170 andassign       7       3       modifies flow of control
 171 orassign        7       3       modifies flow of control
 172 method          8       5
 173 entersub        10      7
 174 leavesub        10      5
 175 leavesublv
 176 caller          2       8
 177 warn            9       3
 178 die             9       3
 179 reset           2       2
 180 lineseq         1       1
 181 nextstate       10      1       Update stack_sp from cxstack. FREETMPS.
 182 dbstate         3       7
 183 unstack
 184 enter           10      3       cxstack, ENTER, SAVETMPS, PUSHBLOCK
 185 leave           10      3       cxstack, SAVETMPS, LEAVE, POPBLOCK
 186 scope           1       1
 187 enteriter       9       4       cxstack
 188 iter            9       3       cxstack
 189 enterloop       10      4
 190 leaveloop       10      4
 191 return          10      5
 192 last            9       6
 193 next            9       6
 194 redo            9       6
 195 dump            1       9       pp_goto
 196 goto            6       9
 197 exit            9       2       my_exit
 198 open            9       5       do_open
 199 close           9       3       do_close
 200 pipe_op         7       4
 201 fileno          9       2
 202 umask           4       2
 203 binmode         4       2
 204 tie             5       5       pp_entersub
 205 untie           5       2       sv_unmagic
 206 tied            5       2
 207 dbmopen         4       5
 208 dbmclose        4       2
 209 sselect         4       4
 210 select          7       3
 211 getc            7       2
 212 read            8       2       pp_sysread
 213 enterwrite      4       4       doform
 214 leavewrite      4       5
 215 prtf            4       4       do_sprintf
 216 print           8       6
 217 sysopen         8       2
 218 sysseek         8       2
 219 sysread         8       4
 220 syswrite        8       4       pp_send
 221 send            8       4
 222 recv            8       4       pp_sysread
 223 eof             9       2
 224 tell            9       3
 225 seek            9       2
 226 truncate        8       3
 227 fcntl           8       4       pp_ioctl
 228 ioctl           8       4
 229 flock           8       2
 230 socket          5       3
 231 sockpair        5       3
 232 bind            5       3
 233 connect         5       3
 234 listen          5       3
 235 accept          5       3
 236 shutdown        5       2
 237 gsockopt        5       3       pp_ssockopt
 238 ssockopt        5       3
 239 getsockname     5       3       pp_getpeername
 240 getpeername     5       3
 241 lstat           5       4       pp_stat
 242 stat            5       4       lengthy
 243 ftrread         5       2       cando
 244 ftrwrite        5       2       cando
 245 ftrexec         5       2       cando
 246 fteread         5       2       cando
 247 ftewrite        5       2       cando
 248 fteexec         5       2       cando
 249 ftis            5       2       cando
 250 fteowned        5       2       cando
 251 ftrowned        5       2       cando
 252 ftzero          5       2       cando
 253 ftsize          5       2       cando
 254 ftmtime         5       2       cando
 255 ftatime         5       2       cando
 256 ftctime         5       2       cando
 257 ftsock          5       2       cando
 258 ftchr           5       2       cando
 259 ftblk           5       2       cando
 260 ftfile          5       2       cando
 261 ftdir           5       2       cando
 262 ftpipe          5       2       cando
 263 ftlink          5       2       cando
 264 ftsuid          5       2       cando
 265 ftsgid          5       2       cando
 266 ftsvtx          5       2       cando
 267 fttty           5       2       cando
 268 fttext          5       4
 269 ftbinary        5       4       fttext
 270 chdir
 271 chown
 272 chroot
 273 unlink
 274 chmod
 275 utime
 276 rename
 277 link
 278 symlink
 279 readlink
 280 mkdir
 281 rmdir
 282 open_dir
 283 readdir
 284 telldir
 285 seekdir
 286 rewinddir
 287 closedir
 288 fork
 289 wait
 290 waitpid
 291 system
 292 exec
 293 kill
 294 getppid
 295 getpgrp
 296 setpgrp
 297 getpriority
 298 setpriority
 299 time
 300 tms
 301 localtime
 302 gmtime
 303 alarm
 304 sleep
 305 shmget
 306 shmctl
 307 shmread
 308 shmwrite
 309 msgget
 310 msgctl
 311 msgsnd
 312 msgrcv
 313 semget
 314 semctl
 315 semop
 316 require         6       9       doeval
 317 dofile          6       9       doeval
 318 entereval       6       9       doeval
 319 leaveeval       6       5
 320 entertry        7       4       modifies flow of control
 321 leavetry        7       3
 322 ghbyname
 323 ghbyaddr
 324 ghostent
 325 gnbyname
 326 gnbyaddr
 327 gnetent
 328 gpbyname
 329 gpbynumber
 330 gprotoent
 331 gsbyname
 332 gsbyport
 333 gservent
 334 shostent
 335 snetent
 336 sprotoent
 337 sservent
 338 ehostent
 339 enetent
 340 eprotoent
 341 eservent
 342 gpwnam
 343 gpwuid
 344 gpwent
 345 spwent
 346 epwent
 347 ggrnam
 348 ggrgid
 349 ggrent
 350 sgrent
 351 egrent
 352 getlogin
 353 syscall
 354 lock            6       1
 355 threadsv        6       2       unused if not USE_5005THREADS
 356 setstate        1       1       currently unused anywhere
 357 method_named    10      2