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Syscalls pass by int64. The identifier of the called function is in eax, parameters
are in ebx, ecx, edx, esi, edi.
Syscall list :
id=eax Name Parameters Description
0 thread_exit none Signal kernel that current thread has finished
1 schedule none Switch to next thread (might be the current one)
2 thread_sleep ebx: time (int) msecs Tell kernel to put current thread to sleep
3 process_exit ebx: return value (int) Tell kernel to end current process, cleaning up everything
4 printk ebx: addr of a string Print a message to screen
5 thread_new ebx: entry point Creates a new thread
ecx: data pointer
6 irq_wait ebx: irq number Waits for an IRQ (requires privilege PL_DRIVER)
7 proc_priv none Returns current process privilege level
8 shm_create ebx: offset Create a shared memory segment at offset (ret = errcode)
ecx: length
9 shm_delete ebx: offset Delete a shared memory segment at offset (ret = errcode)
10 object_create none Creates an object for current process (returns a descriptor to it)
11 object_owned ebx: object descriptor True (1) if object with this descriptor is ours, false(0) elsewhere
12 object_close ebx: object descriptor Closes descriptor to an object (deleting it if necessary)
13 request_get ebx: object descriptor Gets a request pending on object (only if we own it)
ecx: pointer to write request
edx: wait for a request ?
14 request_has ebx: object descriptor Is there a request waiting on this object ?
15 request_answer ebx: object descriptor
ecx, edx: answer Answer a request on object
16 request_mapShm ebx: object descriptor Map shared memory sent with request to receiver's address space
ecx: offset
edx: parameter number (0, 1 or 2)
17 request ebx: object descriptor Send a blocking request to object
ecx: pointer to user_sendrequest struct with information
18 send_msg same as above Send a nonblocking request to object, same as above
If a processes wishes to exit with an error code, it HAS to use process_exit. thread_exit will do nothing.
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