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https://github.com/GnoConsortium/gno.git
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718 lines
11 KiB
NASM
718 lines
11 KiB
NASM
***********************************************************************
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*
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* The GNO Shell Project
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*
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* Developed by:
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* Jawaid Bazyar
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* Tim Meekins
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* Modified by Dave Tribby for GNO/ME 2.0.6
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*
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* $Id: invoke.asm,v 1.3 1998/05/11 19:18:43 tribby Exp $
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*
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**************************************************************************
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*
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* INVOKE.ASM
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* By Tim Meekins
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*
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* Command invocation routines.
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*
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**************************************************************************
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mcopy /obj/gno/bin/gsh/invoke.mac
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dummy start ; ends up in .root
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end
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setcom 60
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SIGINT gequ 2
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SIGKILL gequ 9
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SIGTERM gequ 15
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SIGSTOP gequ 17
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SIGTSTP gequ 18
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SIGCONT gequ 19
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SIGCHLD gequ 20
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SIGTTIN gequ 21
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SIGTTOU gequ 22
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**************************************************************************
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*
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* Redirect
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*
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**************************************************************************
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redirect START
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space equ 1
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pipeout2 equ space+3
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pipein2 equ pipeout2+2
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pipeout equ pipein2+2
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pipein equ pipeout+2
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eapp equ pipein+2
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app equ eapp+2
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efile equ app+2
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dfile equ efile+4
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sfile equ dfile+4
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end equ sfile+4
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; subroutine (4:sfile,4:dfile,4:efile,2:app,2:eapp,2:pipein,2:pipeout,2:pipein2,2:pipeout2),space
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tsc
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phd
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tcd
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;
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; standard input
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;
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ora2 sfile,sfile+2,@a
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beq execa
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pei (sfile+2) ;for c2pstr
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pei (sfile)
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pei (sfile+2)
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pei (sfile)
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jsr cstrlen
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inc a
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pea 0
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pha
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jsl ~NEW
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sta RedirectFile
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stx RedirectFile+2
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phx
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pha
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jsr c2pstr
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stz RedirectDev
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stz RedirectApp
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Redirect RedirectParm
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php
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ph4 RedirectFile
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jsl nullfree
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plp
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bcc execa
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ldx #^err1
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lda #err1
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jmp badbye
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;
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; standard output
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;
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execa ora2 dfile,dfile+2,@a
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beq execb
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pei (dfile+2) ;for c2pstr
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pei (dfile)
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pei (dfile+2)
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pei (dfile)
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jsr cstrlen
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inc a
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pea 0
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pha
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jsl ~NEW
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sta RedirectFile
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stx RedirectFile+2
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phx
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pha
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jsr c2pstr
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ld2 1,RedirectDev
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mv2 app,RedirectApp
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Redirect RedirectParm
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php
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ph4 RedirectFile
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jsl nullfree
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plp
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bcc execb
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ldx #^err2
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lda #err2
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jmp badbye
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;
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; standard error
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;
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execb ora2 efile,efile+2,@a
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beq execc
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pei (efile+2) ;for c2pstr
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pei (efile)
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pei (efile+2)
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pei (efile)
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jsr cstrlen
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inc a
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pea 0
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pha
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jsl ~NEW
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sta RedirectFile
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stx RedirectFile+2
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phx
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pha
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jsr c2pstr
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ld2 2,RedirectDev
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mv2 eapp,RedirectApp
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Redirect RedirectParm
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php
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ph4 RedirectFile
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jsl nullfree
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plp
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bcc execc
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ldx #^err3
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lda #err3
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jmp badbye
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;
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; is input piped in?
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;
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execc lda pipein
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beq execd
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dup2 (pipein,#1)
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mv2 pipein2,CloseRef
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Close CloseParm
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ldx #0
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lda pipein
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SetInputDevice (#3,@xa)
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;
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; is output piped?
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;
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execd lda pipeout
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beq exece
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dup2 (pipeout,#2)
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mv2 pipeout2,CloseRef
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Close CloseParm
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ldx #0
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lda pipeout
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SetOutputDevice (#3,@xa)
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exece anop
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goodbye ldy #0
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bra exit
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badbye jsr errputs
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cop $7F ; get out of the way
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ldy #1
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exit lda space
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sta end-3
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lda space+1
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sta end-2
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pld
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tsc
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clc
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adc #end-4
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tcs
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cpy #1
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rtl
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RedirectParm anop
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RedirectDev ds 2
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RedirectApp ds 2
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RedirectFile ds 4
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CloseParm dc i'1'
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CloseRef dc i'0'
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err1 dc c'gsh: Error redirecting standard input.',h'0d00'
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err2 dc c'gsh: Error redirecting standard output.',h'0d00'
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err3 dc c'gsh: Error redirecting standard error.',h'0d00'
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END
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**************************************************************************
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*
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* Invoke a command (PHASE 0)
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*
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**************************************************************************
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invoke START
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using hashdata
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using vardata
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using global
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using pdata
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p equ 0
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biflag equ p+4
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ptr equ biflag+2
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val equ ptr+4
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dir equ val+2
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space equ dir+4
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subroutine (2:argc,4:argv,4:sfile,4:dfile,4:efile,2:app,2:eapp,2:bg,4:cmd,2:jobflag,2:pipein,2:pipeout,2:pipein2,2:pipeout2,4:pipesem),space
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ld2 -1,val
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stz biflag ;not a built-in
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lda argc
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bne chknull
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lda sfile
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ora sfile+2
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ora dfile
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ora dfile+2
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ora efile
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ora efile+2
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beq nulldone
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ldx #^hehstr
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lda #hehstr
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jsr errputs
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nulldone jmp done
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;
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; Check for null command
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;
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chknull ldy #2
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lda [argv]
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sta dir
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lda [argv],y
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sta dir+2
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ora dir
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beq gonull
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lda [dir]
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and #$FF
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bne checkfile
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gonull jmp done
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;
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; check for file
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;
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checkfile anop
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pei (dir+2)
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pei (dir)
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jsl IsBuiltin ;check builtin first
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cmp #-1
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jne trybuiltin
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pei (dir+2)
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pei (dir)
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ph4 hash_table
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ph4 #hash_paths
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jsl search
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cmp #0
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bne changeit
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cpx #0
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beq skip
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changeit sta dir
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stx dir+2
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skip lock mutex2
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pei (dir+2)
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pei (dir)
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jsr c2gsstr
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sta GRecPath
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sta ptr
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stx GRecPath+2
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stx ptr+2
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GetFileInfo GRec
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unlock mutex2
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jcs notfound
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if2 GRecFileType,eq,#$B5,doExec
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if2 @a,eq,#$B3,doExec
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ldx vardirexec
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bne ft02
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cmp #$0F
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jeq doDir
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ft02 if2 @a,ne,#$B0,badfile
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if2 GRecAuxType,ne,#6,badfile
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if2 GRecAuxType+2,ne,#0,badfile
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jmp doShell
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badfile ldx dir+2
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lda dir
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jsr errputs
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ldx #^err1
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lda #err1
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jsr errputs
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free pei (ptr+2)
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pei (ptr)
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jsl nullfree
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jmp done
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;
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; launch an executable
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;
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doExec pei (ptr+2)
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pei (ptr)
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jsl nullfree
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jsr prefork
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fork #invoke0
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jsr postfork
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jmp done
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invoke0 phk
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plb
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;
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; make a a copy of cmd
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;
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pha
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pha
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tsc
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phd
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tcd
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ldx #0
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tsc
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FindHandle @xa,1
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ldy #6
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lda [1],y ;This is the UserID!
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and #$F0FF
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pha
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ph4 _cmd
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jsr cstrlen
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inc a
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ply
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pha
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ldx #0
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NewHandle (@xa,@y,#$4018,#0),1
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ply
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ldx #0
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PtrToHand (_cmd,1,@xy)
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ldy #2
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lda [1],y
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tax
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lda [1]
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pld
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ply
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ply
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phx ;_cmd
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pha
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;
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; make a a copy of dir
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;
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pha
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pha
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tsc
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phd
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tcd
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ldx #0
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tsc
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FindHandle @xa,1
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ldy #6
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lda [1],y ;This is the UserID!
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and #$F0FF
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pha
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ph4 _dir
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jsr cstrlen
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inc a
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ply
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pha
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ldx #0
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NewHandle (@xa,@y,#$4018,#0),1
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ply
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ldx #0
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PtrToHand (_dir,1,@xy)
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ldy #2
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lda [1],y
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tax
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lda [1]
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pld
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ply
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ply
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phx ;_dir
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pha
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jsl infork
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bcs invoke1
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* Change for GNO 2.0.6: call _execve instead of execve
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case on
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jsl _execve
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case off
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rtl
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invoke1 pla
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pla
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pla
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pla
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rtl
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;
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; do path (it was a directory entry so change to that directory)
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;
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doDir lock cdmutex
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mv4 GRecPath,PRecPath
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SetPrefix PRec
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unlock cdmutex
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stz val
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jmp free
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;
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; fork a shell script
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;
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doShell inc biflag ;don't free argv...
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jsr prefork
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* int fork2(void *subr, int stack, int prio, char *name, word argc, ...)
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pea 0
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ldy #2
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lda [argv],y
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pha
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lda [argv]
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pha
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pea 0
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pea 1024
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ph4 #exec0
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case on
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jsl fork2
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case off
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* fork #exec0
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jsr postfork
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jmp free
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exec0 ph2 _argc ;for argfree
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ph4 _argv
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ph4 _dir ;for shellexec
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ph2 _argc
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ph4 _argv
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jsl infork
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bcs exec0c
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signal (#SIGCHLD,#0)
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PushVariables 0
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pea 1
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jsl ShellExec
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jsl argfree
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PopVariables 0
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rtl
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exec0c pla
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pla
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pla
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pla
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pla
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pla
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pla
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pla
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rtl
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;
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; file not found, so try a builtin.
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;
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trybuiltin inc biflag ;it's a built-in
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cmp #1
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beq noforkbuiltin
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jsr prefork
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fork #forkbuiltin
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jsr postfork
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jmp done
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forkbuiltin cop $7F ;give palloc a chance
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ph2 _argc
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ph4 _argv
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jsl infork
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bcs fork0c
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jsl builtin
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rtl
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fork0c pla
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pla
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pla
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rtl
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noforkbuiltin anop
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pei (argc)
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pei (argv+2)
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pei (argv)
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jsl builtin
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stz val
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bra done
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notfound pei (ptr+2)
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pei (ptr)
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jsl nullfree
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ldy #2
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lda [argv],y
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tax
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lda [argv]
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jsr errputs
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ldx #^err2
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lda #err2
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jsr errputs
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lda pipein
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beq notfound0
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ssignal _semaphore
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sdelete _semaphore
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mv4 pjoblist,p
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ldy #16 ;p_jobid
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lda [p],y
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getpgrp @a
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eor #$FFFF
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inc a
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kill (@a,#9)
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sigpause #0
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notfound0 anop
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done cop $7F
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lda biflag
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bne skipfrarg
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pei (argc)
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pei (argv+2)
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pei (argv)
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jsl argfree
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skipfrarg pei (cmd+2)
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pei (cmd)
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jsl nullfree
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return 2:val
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;
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;
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; stuff to do just before forking
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;
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prefork lock mutex
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SetInGlobals (#$FF,#00)
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mv4 sfile,_sfile
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mv4 dfile,_dfile
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mv4 efile,_efile
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mv2 app,_app
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mv2 eapp,_eapp
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mv4 cmd,_cmd
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mv4 dir,_dir
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mv2 argc,_argc
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mv4 argv,_argv
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mv2 pipein,_pipein
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mv2 pipeout,_pipeout
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mv2 pipein2,_pipein2
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mv2 pipeout2,_pipeout2
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mv2 bg,_bg
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mv2 jobflag,_jobflag
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lda [pipesem]
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sta _semaphore
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lda pipesem
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sta putsem+1
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lda pipesem+1
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sta putsem+2
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rts
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;
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; stuff to do right after forking
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;
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postfork sta val
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lda pipein
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beq postfork2
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sta CloseRef
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Close CloseParm
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postfork2 lda pipeout
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beq postfork3
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sta CloseRef
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Close CloseParm
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postfork3 lda val
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cmp #-1
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bne postfork4
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ldx #^deadstr
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lda #deadstr
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jsr errputs
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unlock mutex
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jmp done
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postfork4 ldx jobflag
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dex
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beq postfork5
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pha
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pei (bg)
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pei (cmd+2)
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pei (cmd)
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lda pipein
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bne postfork4a
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jsl palloc
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bra postfork5
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postfork4a jsl pallocpipe
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postfork5 lda >mutex ;DANGER!!!!! Assumes knowledge of
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beq postfork6 ;lock/unlock structure!!!!!!!!
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cop $7F
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bra postfork5
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postfork6 rts
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;
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; stuff to do in fork
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;
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infork phk
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plb
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lda _jobflag
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bne invoke0b
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Open ttyopen
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jcs doneinfork
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lda _pipein
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bne invoke0a
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tcnewpgrp ttyref
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invoke0a settpgrp ttyref
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lda _bg ;if in background then reset tty to
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and #$FF
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beq invoke0b ;to the shell process group
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tctpgrp (gshtty,gshpid)
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invoke0b ph4 _sfile
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ph4 _dfile
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ph4 _efile
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ph2 _app
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ph2 _eapp
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ph2 _pipein
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ph2 _pipeout
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ph2 _pipein2
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ph2 _pipeout2
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jsl redirect
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jcs doneinfork
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unlock mutex
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lda _pipein
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bne invoke0c
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lda _pipeout
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beq invoke0d
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screate #0
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putsem sta >$FFFFFF
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swait @a
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bra invoke0d
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invoke0c lda _pipeout
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bne invoke0d
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waitsemy lda _semaphore
|
|
bne goodsemy
|
|
cop $7F
|
|
bra waitsemy
|
|
goodsemy ssignal _semaphore
|
|
sdelete _semaphore
|
|
|
|
invoke0d anop
|
|
|
|
clc
|
|
bra indone
|
|
|
|
doneinfork unlock mutex
|
|
sec
|
|
indone rtl
|
|
|
|
mutex key
|
|
mutex2 key
|
|
cdmutex key
|
|
|
|
_argc dc i2'0'
|
|
_argv dc i4'0'
|
|
_sfile dc i4'0'
|
|
_dfile dc i4'0'
|
|
_efile dc i4'0'
|
|
_app dc i2'0'
|
|
_eapp dc i2'0'
|
|
_cmd dc i4'0'
|
|
_dir dc i4'0'
|
|
_pipein dc i2'0'
|
|
_pipeout dc i2'0'
|
|
_pipein2 dc i2'0'
|
|
_pipeout2 dc i2'0'
|
|
_bg dc i2'0'
|
|
_jobflag dc i2'0'
|
|
_semaphore dc i2'0'
|
|
|
|
str dc c'[0]',h'0d00'
|
|
err1 dc c': Not executable.',h'0d00'
|
|
err2 dc c': Command not found.',h'0d00'
|
|
hehstr dc c'heh heh, next time you''ll need to specify a command '
|
|
dc c'before redirecting.',h'0d00'
|
|
deadstr dc c'Cannot fork (too many processes?)',h'0d00' ;try a spoon
|
|
|
|
GRec dc i'4'
|
|
GRecPath ds 4
|
|
ds 2
|
|
GRecFileType ds 2
|
|
GRecAuxType ds 4
|
|
|
|
PRec dc i'2'
|
|
PRecNum dc i'0'
|
|
PRecPath ds 4
|
|
|
|
CloseParm dc i2'1'
|
|
CloseRef dc i2'0'
|
|
|
|
Err dc i2'0'
|
|
|
|
ttyopen dc i2'2'
|
|
ttyref dc i2'0'
|
|
dc i4'ttyname'
|
|
ttyname gsstr '.tty'
|
|
|
|
END
|