example.library

an example library for the Amiga

all data/bss belongs to the library structure -> no fuzz with a4.

building without eclipse

simply run m68k-amigaos-gcc -nostartfiles -o example.library alibrary.c myfx.c zinitexit.c -Os

note that alibrary.c should be specified as the first file.

some notes

defining library functions

Note that you define your library functions with register a6 in the library's code:

int myfunction1(int a asm("d0"), struct MyLib * mylib asm("a6"))

For the library users this becomes

int myfunction1(int a asm("d0"))

the register a6 is loaded while invoking the library function.

library modes

this example provides a library base which shares the data to all openers. if you need a variant which provides a library base per opener: #define MULTIBASE.