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- ;:ts=8
- ;
- ; Initial startup routine for Aztec 'C' and ARP using RESIDENT.
- ; NB: This should allow access to all Aztec Features, math, etc.
- ; Could be made smaller if only for CLI, only for Workbench,
- ; Could be made smaller if only this or that.
- ;
- ; Created 02-18-88 by -+=SDB+=- from arpcrt0.s
- ; Copyright (c) 1988 by Scott Ballantyne, may be freely
- ; used by Arp Supporters/users.
- ; Use at your own risk.
- ;
- ; NB: References to the ___fromdisk__ long have to be handled carefully,
- ; since they are somewhat shizophrenic, sometimes referring to copied
- ; data, sometimes not. Note that they should fine for the C code without
- ; special handling as long as small model is used.
- ;
- ; May 9, 1988: Move OpenLibrary() call into _main() to fix WBench Bug.
- ; Add AhOhNoARP() callout for better user interface.
- ;
- ; 10-Mar-90: Put together from resgeta4.s & arprescrt0.s for
- ; Aztec 5.0 release.
- ;
- ; Note: define ARPONLY to create startup code for Arp
- ; tool, the default is standard Aztec startup code.
- ; The reason for this is: Arp opens dos.library in
- ; _main() while the standard Aztec startup code
- ; opens it before entering _main().
- ;
-
- include "exec/types.i"
- include "exec/execbase.i"
- include "exec/memory.i"
- include "exec/tasks.i"
- include "exec/alerts.i"
- include "libraries/arpbase.i"
- include "exec/execbase.i"
-
- call macro
- xref _LVO\1
- jsr _LVO\1(a6)
- endm
-
- mc68881
- entry .begin
- public .begin
- public _geta4
-
- * If you need more or less stack, change the first number below
- * For example, if your program only needs 4000 bytes of stack, the
- * line below would read:
- * RESIDENT 4000,__H2_end-__H1_org,loaded
- *
-
- .begin
- RESIDENT 10240,__H2_end-__H1_org,loaded
- moveq.l #0,d7 ; flag resident code
- move.l a4,a3 ; copy base
- add.l #32766,a4 ; bias
- bra.s clonedata ; and copy the data segment only
- loaded: moveq.l #-1,d7 ; flag not resident (start if from disk)
- far data
- move.l d7,___fromdisk__ ; needs to be set for _geta4
- near data
- bsr _geta4
- isresident:
- lea __H1_end,a1
- lea __H2_org,a2
- cmp.l a1,a2 ;check if BSS and DATA together
- bne normal ; this would actually be an error.
- move.w #((__H2_end-__H2_org)/4)-1,d1
- bmi normal
- move.l #0,d2
-
- loop move.l d2,(a1)+ ;clear out memory
- dbra d1,loop
- bra.s normal
-
- clonedata:
- move.l #((__H1_end-__H1_org)/4)-1,d1
- bmi.s normal
- far data
- lea __H1_end,a1
- lea __H2_org,a2
- cmp.l a1,a2
- beq.s 1$
- move.l #500,d0 ; error, must be same hunk, so scram
- rts
-
- 1$: lea.l __H1_org,a1 ; clone data and bss
-
- near data
- 0$ move.l (a1)+,(a3)+ ; a3 set to point to base
- dbra d1,0$
-
- normal: move.l sp,__savsp ; save stack pointer
- move.l 4,a6 ; get Exec's library base pointer
- move.l a6,_SysBase ; put where we can get it
- movem.l d0/a0,-(sp) ; save CLI command parameters
-
- move.w AttnFlags(a6),d0
- btst #AFB_68881,d0 ;check for 68881 flag in AttnFlags
- beq 1$ ;skip if not
- lea 2$,a5
- call Supervisor ;do it in supervisor mode
- bra 1$
-
- 2$ clr.l -(sp)
- frestore (sp)+ ;reset the ffp stuff
- rte ;and return
-
- 1$ IFND ARPONLY
- lea dos_name,a1 ;get name of dos library
- moveq #0,d0 ;any version
- call OpenLibrary ;open the library
- move.l d0,_DOSBase ;set it up
- bne 3$ ;skip if okay
-
- move.l #AG_OpenLib!AO_DOSLib,d7;AG_OpenLib | AO_DOSLib
- call Alert ;Alert
- bra 4$
-
- 3$ jsr __main ;call the startup stuff
- tst.l _DOSBase ;lib still open?
- beq.s 4$ ;nope
- move.l _DOSBase,a1
- move.l 4,a6
- call CloseLibrary ;close it then
-
- 4$ lea 8(sp),sp ;pop args
- rts ;and return
-
- dos_name:
- dc.b 'dos.library',0
- ENDC
-
- IFD ARPONLY
- jsr __main ;call the startup stuff
- lea 8(sp),sp ;pop args
- rts ;and return
- ENDC
-
- _geta4:
- far data
- movem.l d0-d1/a0-a1/a6,-(sp) ; max safety here...
- tst.l ___fromdisk__
- bne.s 1$
- move.l 4,a6
- move.l ThisTask(a6),a0
- lea.l TC_MEMENTRY(a0),a0
- lea.l PMEM(pc),a1
- call FindName
- move.l d0,a0
- cmp.w #2,pm_Num(a0) ; check for data
- bne.s 1$ ; resident, but no data allocated.
- move.l pm_Data(a0),a4 ; get data pointer
- add.l #32766,a4 ; bias
- bra.s 2$
- 1$ lea.l __H1_org+32766,a4
- 2$ movem.l (sp)+,d0-d1/a0-a1/a6
- rts
-
- PMEM PMEM_NAME
-
- public __main,__H0_org
-
- dseg
-
- public _SysBase,_DOSBase,__savsp,___fromdisk__,___sloppy__
- public __H1_org,__H1_end,__H2_org,__H2_end
-
- near data
-
- even
-
- ___fromdisk__:
- dc.l 0 ; default is resident
- ___sloppy__:
-
- ifnd ARPONLY
- dc.l 0
- endc
-
- ifd ARPONLY
- dc.l 1
- endc
-
- end
-