ack/mach/m68020/libsys/README

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1987-01-29 22:36:35 +00:00
! Two system calls (gtty and stty) in the m68000 tail_mon library
! were not really system calls but they used _ioctl. The m68020 machine
! the table was tested on used real system calls, and we'll use
! them here.
! There were also three calls (ftime, lock and dup2) that were in the
! m68000 library, but were not included in the list of system calls
! for the m68020 that was given to me. We'll include them anyway.
! The original gtty and stty files are included here.
! Note however that the 68000 machine (the Mantra) needs the parameters
! to system calls in registers, while the m68020 machine this table was
! tested on wanted the parameters on the stack
!
! Also read the comments in the signal.s file!
! ------------------- dup2.s
! .define _dup2
! .extern _dup2
! .sect .text
! .sect .rom
! .sect .data
! .sect .bss
! .sect .text
! _dup2: move.w #0x29,d0
! move.l (4,sp),a0
! move.l (8,sp),d1
! add.l #0x40,a0
! jmp (call)
!
!
! ! ------------------- gtty.s
! .define _gtty
! .extern _gtty
! .sect .text
! .sect .rom
! .sect .data
! .sect .bss
! .sect .text
! _gtty:
! tst.b (-40,sp)
! link a6,#-0
! move.l (12,a6),-(sp)
! move.l #29704,-(sp)
! move.l (8,a6),-(sp)
! jsr (_ioctl)
! add.l #12,sp
! unlk a6
! rts
!
!
! ! ------------------- stty.s
! .define _stty
! .extern _stty
! .sect .text
! .sect .rom
! .sect .data
! .sect .bss
! .sect .text
! _stty:
! tst.b (-40,sp)
! link a6,#-0
! move.l (12,a6),-(sp)
! move.l #29705,-(sp)
! move.l (8,a6),-(sp)
! jsr (_ioctl)
! add.l #12,sp
! unlk a6
! rts