BBOURBIN@UMDD.BITNET (02/10/88)
Does anyone know how to all routines in the amiga.lib library from
assembly language? I know that the parms are passed on the stack but what
is the procedure name that has to be called; is it in the form "LVOCreatPort"
or is it just "CreatePort" or "_CreatePort" and does it have to be XREF'ed at
the start of the program?
Also, if you have created a program and have it startup instead of
Workbench, and issue a ENDCLI command afterwards, will it also release the
input.device so I do not have to do a SetMPort to a -1?
Thanks for any help you offer.
- Brett Bourbin
President of SELGUS LTD.
BITNET: bbourbin @ umddsteveb@cbmvax.UUCP (Steve Beats) (02/10/88)
In article <8802091727.AA09035@jade.berkeley.edu> BBOURBIN@UMDD.BITNET writes: > > Does anyone know how to all routines in the amiga.lib library from >assembly language? I know that the parms are passed on the stack but what >is the procedure name that has to be called; is it in the form "LVOCreatPort" >or is it just "CreatePort" or "_CreatePort" and does it have to be XREF'ed at >the start of the program? > Yes, just prefix whatever you want to call with '_LVO' ie. _LVOAllocMem. You should XREF all library calls you use in any given module. Steve
mills-cl@cedar.cis.ohio-state.edu (christopher mills) (02/11/88)
[] > Does anyone know how to [c]all routines in the amiga.lib library from >assembly language? I certanly hope so. The ones with the LVO's are called with the parameters in registers, relative to the library base pointer in A6, ie: xref LVOOpenScreen move.l _IntuitionBase,a6 lea newscreen,a0 jsr LVOOpenScreen(a6) The ones that don't have LVO's are C calls, and have their args on the stack. They have an underscore in front, ie: xref _OpenScreen pea newscreen jsr _OpenScreen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _____________________ | Christopher Mills. (_)________________ \ | mills-cl@polaris.cis.ohio-state.edu ________________|\ \ | (_)______________\_\ \ | Current thought: Death before dongles. ______________________\ | (_)____________________| | DISCLAMER: I really wish I could blame | my thoughts on someone else... -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
hamilton@uxc.cso.uiuc.edu (02/12/88)
BBOURBIN@UMDD.BITNET asks: > > Does anyone know how to all routines in the amiga.lib library from >assembly language? I know that the parms are passed on the stack but what >is the procedure name that has to be called; is it in the form "LVOCreatPort" >or is it just "CreatePort" or "_CreatePort" and does it have to be XREF'ed at >the start of the program? > steveb@cbmvax replies: > Yes, just prefix whatever you want to call with '_LVO' ie. _LVOAllocMem. > You should XREF all library calls you use in any given module. i think the original question was about the exec support functions (CreatePort, DeletePort, etc), which are C routines, and not library members - there aren't any LVO's for them. i haven't tried to use them from assembler, so i'm just guessing: use XREF's, prepend '_' to the name, push the args in right-to-left order, JSR to the function, then "pop" the args back off the stack. wayne hamilton U of Il and US Army Corps of Engineers CERL UUCP: {ihnp4,seismo,pur-ee,convex}!uiucuxc!hamilton ARPA: hamilton@uxc.cso.uiuc.edu USMail: Box 476, Urbana, IL 61801 CSNET: hamilton%uxc@uiuc.csnet Phone: (217)333-8703 CIS: [73047,544] PLink: w hamilton
FATQW@USU.BITNET (02/15/88)
In article <3299@cbmvax.UUCP> steveb@cbmvax.UUCP (Steve Beats) writes: >In article <8802091727.AA09035@jade.berkeley.edu> BBOURBIN@UMDD.BITNET writes: >> >> Does anyone know how to all routines in the amiga.lib library from >>assembly language? I know that the parms are passed on the stack but what >>is the procedure name that has to be called; is it in the form "LVOCreatPort" >>or is it just "CreatePort" or "_CreatePort" and does it have to be XREF'ed at >>the start of the program? > >Yes, just prefix whatever you want to call with '_LVO' ie. _LVOAllocMem. >You should XREF all library calls you use in any given module. > > Steve Er,... I think using these routines in this way just might help your Amiga along directly on a path to the GURU. There are two ways you can call those routines from assembly language. If you want a more efficient, but a teeny bit harder to program, you can use the _LVOxxxx routines, like "_LVOAllocMem". However, these are only values, they don't point to routines. You use these values as an offset into the library base pointer of the library you want to use. You pass the parameters in registers - you can find out the registers to use in the back of the RKM: Exec, or in the .fd files on the Extras disk. The other method is to use the C interfaces from assembly language. You call a routine called "_xxxx" like "_AllocMem". The registers are passed on the stack with the last one pushed first, so the first parameter is on the top of the stack when the function gets control. These routines simply load the registers with the parameters you supply, then call the appropriate _LVO offset. One more thing: The last method is the only way to access the routines built into the Amiga.lib, such as CreatePort() and the others in the exec_support library. This is because these routines don't just call _LVO routines, since there aren't any to call. Well, hope this helps, and I certainly hope you can make sense from this! Bryan Bryan Ford //// A computer does what \\\\ Snail: 1790 East 1400 North //// you tell it to do, not \\\\ Logan, UT 84321 \\\XX/// what you want it to do. \\\XX/// Email: FATQW@USU.BITNET \XXXX/ Murphy's Law Calendar 1986 \XXXX/