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Conference hydra::amiga_v1

Title:	AMIGA NOTES
Notice:	Join us in the NEW conference - HYDRA::AMIGA_V2
Moderator:	HYDRA::MOORE

Created:	Sat Apr 26 1986
Last Modified:	Wed Feb 05 1992
Last Successful Update:	Fri Jun 06 1997
Number of topics:	5378
Total number of notes:	38326

1428.0. "Amiga$FIND_IMAGE_SYMBOL?" by YIPPEE::GOULNIK (OogaboogaBox type) Thu May 19 1988 08:54

	I intend to add an external call interface to XLISP, well, as
	soon as I receive my C compiler. Anyway, is there an Amiga
	equivalent to VMS LIB$FIND_IMAGE_SYMBOL, which allows access
	to a library routine on the fly, or do I have to build a jump
	table with hardwired offsets?
Iv

T.R	Title	User	Personal Name	Date	Lines
1428.1	Common Lisp small and massive	AITG::WISNER	Disconnect before disconnecting connecting connectors	`Thu May 19 1988 16:32`	21
	HOORAY!!!!!!!!!!!!!!!!!!!! If you do this I'll be your biggest fan. Want help??? I fairly sure you can access library routines with their symbol names. I'll look it up in the docs tonight. "This summer I startup my attempt to port Kyoto Common Lisp to the amiga. It's a full Common Lisp with a compiler. It compiles lisp functions to C, then calls your C compiler and linker. I have to give it the capability of loading executable code dynamically. Yikes! I have the code for this for many systems (SUNS, PYRAMID, VAX, etc). There are about 4meg of source files. Most are lisp. You build a base system in C then load in the Lisp files, compile them, and save the full version. A hard disk and a C compiler will be required to use the system, and probably 2meg of ram. This is alot of fun." I think XLISP is great. I used it for all my projects in the A.I. course and some math courses too. I was wishing for graphics. -Paul Wisner
1428.2	oh really?	COOKIE::WECKER	Official DEC Houseplant	`Thu May 19 1988 22:09`	10
	re: .1 a. Where did you get it? b. How much? c. What sort of license? d. Is it on the E-NET? e. Can I get my paws on it? dave
1428.3		AITG::WISNER	Disconnect before disconnecting connecting connectors	`Fri May 20 1988 20:40`	7
	Sorry to have lead this topic off the subject of accessing functions in amiga libraries. re: .2 more info about KCL in note 1432. Haven't been home since yesterday. So I haven't looked up the answer to your question.
1428.4	OpenLibrary is it (sort of)	TLE::RMEYERS	Randy Meyers	`Sun May 22 1988 02:54`	14
	Re: .0 Yes and No. Yes: The Amiga OpenLibrary function is equivalent to LIB$FIND_IMAGE_SYMBOL in that it binds a library of code to the program dynamically at runtime. No: Unlike LIB$FIND_IMAGE_SYMBOL, OpenLibrary does not find the address to use for an entry point. Instead, offsets off the library vector are coded into the program. Like VMS, Amiga Libraries have a transfer vector associated with them. See pages A-2 to A-4 of "Amiga ROM Kernel Reference Manual: Libraries and Devices."
1428.5	entry point tables?	AITG::WISNER	Disconnect before disconnecting connecting connectors	`Mon May 23 1988 21:08`	17
	I looked for a way to access a library routine without hardcoding it's vector offset into your program. I didn't find anything built into the exec. ALTERNATE APPROACH: AmigaBASIC has .FDL files associated with each library. I suspect the these files contain the vector offset for each routine name. You could create similiar entry point/routine name tables for your programs libraries. To calculate the routines vector: LibBase - &Routine() There must be a better way.... anyone?