On 03/08/06 19:43, BVK Groups wrote:
I found out that CHACMOS is mapping trampoline.S at that address.
I What is this trampoline.S is for? I tried to understand trampoline.S code, but i couldn't. I didnt find any FAQ entry regarding this. Can anyone please help me here?
My interpretation of trampoline.S in CHACMOS follows:
In CHACMOS, the code in trampoline.S is mapped into newly created address spaces at address 0. CHACMOS starts the initial thread in those address spaces at address 0. The code in trampoline.S implements a tiny server that waits for IPC messages from the root task. The functions that can be invoked are (function number in dw0, parameters in dw1+dw2): 0) receive a string message 1) zero-fill a region 2) change the pager of the initial thread in the address space 3) jump to an address This allows populating the address space and configuring the initial thread before launching the actual application code for that address space.
Uwe