ews00461@uxa.cso.uiuc.edu (08/01/90)
How do MPW tools handle global data ? I'm trying to develop my own format for dynamically linked code, something along the lines of MPW tools. I want to be able to execute the code inside a file, like tools, and have global data. Is A5 patched on entry to the tool ? Do tools have their own jump table separate from MPW Shell ? Don't tools access some of MPW's A5 globals? How do tools call MPW stdio ? What code is contained in these stdio libraries ? While we're close to the topic, how do some MPW compilers handle >32k of global data ? The 68000 cannot access this using 16 bit displacement from a5. Any discussion on this/these topics would be interesting to me, including explanations of XCMD's, Excel DLL's, XFCN, etc... Eric W. Sink e-sink@uiuc.edu