218 lines
5.6 KiB
Forth
218 lines
5.6 KiB
Forth
\ Copyright 2021 Bradley D. Nelson
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\
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\ Licensed under the Apache License, Version 2.0 (the "License");
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\ you may not use this file except in compliance with the License.
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\ You may obtain a copy of the License at
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\
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\ http://www.apache.org/licenses/LICENSE-2.0
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\
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\ Unless required by applicable law or agreed to in writing, software
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\ distributed under the License is distributed on an "AS IS" BASIS,
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\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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\ See the License for the specific language governing permissions and
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\ limitations under the License.
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vocabulary posix posix definitions
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( Shared Library Handling )
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1 constant RTLD_LAZY
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2 constant RTLD_NOW
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0 z" dlopen" dlsym constant 'dlopen
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: dlopen ( z n -- a ) 'dlopen [ internals ] call2 [ posix ] ;
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create calls
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internals
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' call0 , ' call1 , ' call2 , ' call3 , ' call4 ,
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' call5 , ' call6 , ' call7 , ' call8 , ' call9 ,
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' call10 , ' call11 , ' call12 , ' call13 , ' call14 , ' call15 ,
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posix
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: sofunc ( z n a "name" -- )
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swap >r swap dlsym dup 0= -38 and throw create , r> cells calls + @ ,
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does> dup @ swap cell+ @ execute ;
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: sysfunc ( z n "name" -- ) 0 sofunc ;
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: shared-library ( z "name" -- )
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RTLD_NOW dlopen dup 0= -38 and throw create , does> @ sofunc ;
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: sign-extend ( n -- n ) >r rp@ sl@ rdrop ;
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( Major Syscalls )
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z" open" 3 sysfunc open
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z" creat" 2 sysfunc creat
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z" close" 1 sysfunc close
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z" read" 3 sysfunc read
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z" write" 3 sysfunc write
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z" lseek" 3 sysfunc lseek
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z" ftruncate" 2 sysfunc ftruncate
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z" fsync" 1 sysfunc fsync
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z" exit" 1 sysfunc sysexit
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z" mmap" 6 sysfunc mmap
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z" munmap" 2 sysfunc munmap
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z" mprotect" 3 sysfunc mprotect
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z" unlink" 1 sysfunc unlink
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z" rename" 2 sysfunc rename
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z" malloc" 1 sysfunc malloc
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z" free" 1 sysfunc sysfree
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z" realloc" 2 sysfunc realloc
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z" usleep" 1 sysfunc usleep
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z" signal" 2 sysfunc signal
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z" isatty" 1 sysfunc isatty
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( Processes )
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z" fork" 0 sysfunc fork
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z" wait" 1 sysfunc wait
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z" waitpid" 3 sysfunc waitpid
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z" execvp" 2 sysfunc execvp
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z" dup2" 2 sysfunc dup2
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z" pipe" 1 sysfunc pipe
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( Directories )
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z" chdir" 1 sysfunc chdir
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z" mkdir" 2 sysfunc mkdir
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z" rmdir" 1 sysfunc rmdir
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z" getwd" 1 sysfunc getwd
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z" opendir" 1 sysfunc opendir
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z" closedir" 1 sysfunc closedir
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z" readdir" 1 sysfunc readdir
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: .d_type ( a -- n ) 18 + c@ ;
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: .d_name ( a -- z ) 19 + ;
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( Errno )
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also internals
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: errno ( -- n ) errno ;
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previous
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( Default Pipes )
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0 constant stdin
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1 constant stdout
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2 constant stderr
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( Seek )
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0 constant SEEK_SET
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1 constant SEEK_CUR
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2 constant SEEK_END
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( mmap )
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0 constant PROT_NONE
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1 constant PROT_READ
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2 constant PROT_WRITE
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4 constant PROT_EXEC
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$2 constant MAP_PRIVATE
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$10 constant MAP_FIXED
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$20 constant MAP_ANONYMOUS
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( open )
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octal
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0 constant O_RDONLY
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1 constant O_WRONLY
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2 constant O_RDWR
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100 constant O_CREAT
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200 constant O_TRUNC
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2000 constant O_APPEND
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4000 constant O_NONBLOCK
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decimal
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( Hookup I/O )
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: stdout-write ( a n -- ) stdout -rot write drop ;
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: stdin-key ( -- n ) 0 >r stdin rp@ 1 read 0= if rdrop -1 exit then r> ;
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also forth definitions
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: default-type stdout-write ;
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: default-key stdin-key ;
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only posix definitions
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' default-type is type
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' default-key is key
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' sysexit is terminate
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( I/O Error Helpers )
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: 0<ior ( n -- ior ) 0< if errno else 0 then ;
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: 0=ior ( n -- ior ) 0= if errno else 0 then ;
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: d0<ior ( n -- n ior ) dup 0<ior ;
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: d0=ior ( n -- n ior ) dup 0=ior ;
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( errno.h )
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11 constant EAGAIN
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32 constant EPIPE
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( Signal Handling )
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0 constant SIG_DFL
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1 constant SIG_IGN
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( Signals )
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1 constant SIGHUP
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2 constant SIGINT
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9 constant SIGKILL
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7 constant SIGBUS
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13 constant SIGPIPE
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( Ignore SIGPIPE )
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SIGPIPE SIG_IGN signal drop
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( Modes )
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octal 777 constant 0777 decimal
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( Clock )
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z" clock_gettime" 2 sysfunc clock_gettime
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: timespec ( "name" ) create 0 , 0 , ;
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0 constant CLOCK_REALTIME
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1 constant CLOCK_MONOTONIC
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2 constant CLOCK_PROCESS_CPUTIME_ID
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3 constant CLOCK_THREAD_CPUTIME_ID
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4 constant CLOCK_MONOTONIC_RAW
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5 constant CLOCK_REALTIME_COARSE
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6 constant CLOCK_MONOTONIC_COARSE
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7 constant CLOCK_BOOTTIME
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8 constant CLOCK_REALTIME_ALARM
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9 constant CLOCK_BOOTTIME_ALARM
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( File control )
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z" fcntl" 3 sysfunc fcntl
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4 constant F_SETFL
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2048 constant FNDELAY ( 04000 )
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forth definitions posix
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( Generic Files )
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O_RDONLY constant R/O
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O_WRONLY constant W/O
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O_RDWR constant R/W
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: BIN ( fh -- fh ) ;
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: CLOSE-FILE ( fh -- ior ) close 0<ior ;
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: FLUSH-FILE ( fh -- ior ) fsync 0<ior ;
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: OPEN-FILE ( a n fam -- fh ior ) >r s>z r> 0777 open sign-extend d0<ior ;
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: CREATE-FILE ( a n fam -- fh ior )
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>r s>z r> O_CREAT or 0777 open sign-extend d0<ior ;
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: DELETE-FILE ( a n -- ior ) s>z unlink 0<ior ;
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: RENAME-FILE ( a n a n -- ior ) s>z -rot s>z swap rename 0<ior ;
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: WRITE-FILE ( a n fh -- ior ) -rot dup >r write r> = 0=ior ;
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: READ-FILE ( a n fh -- n ior ) -rot read d0<ior ;
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: FILE-POSITION ( fh -- n ior ) 0 SEEK_CUR lseek d0<ior ;
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: REPOSITION-FILE ( n fh -- ior ) swap SEEK_SET lseek 0<ior ;
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: RESIZE-FILE ( n fh -- ior ) swap ftruncate 0<ior ;
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: FILE-SIZE ( fh -- n ior )
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dup 0 SEEK_CUR lseek >r
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dup 0 SEEK_END lseek r> swap >r
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SEEK_SET lseek drop r> d0<ior ;
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( Non-standard )
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: NON-BLOCK ( fh -- ior ) F_SETFL FNDELAY fcntl ;
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( Directories )
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: OPEN-DIR ( a n -- dh ior ) s>z opendir d0=ior ;
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: CLOSE-DIR ( dh -- ior ) closedir 0<ior ;
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: READ-DIR ( dh -- a n ) readdir dup if .d_name z>s else 0 then ;
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( Other Utils )
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: ms ( n -- ) 1000 * usleep drop ;
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: ms-ticks ( -- n )
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0 >r 0 >r CLOCK_MONOTONIC_RAW rp@ cell - clock_gettime throw
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r> 1000000 / r> 1000 * + ;
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( Shell ops )
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: cd ( "path" -- ) bl parse s>z chdir throw ;
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: mkdir ( "path" -- ) bl parse s>z 0777 mkdir throw ;
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: rmdir ( "path" -- ) bl parse s>z rmdir throw ;
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: pwd here getwd z>s type cr ;
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forth
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( Setup entry )
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internals : ok ." uEforth" raw-ok ; forth
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