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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
1 thread_exit none Signal kernel that current thread has finished
2 schedule none Switch to next thread (might be the current one)
3 thread_sleep ebx: time (int) msecs Tell kernel to put current thread to sleep
4 process_exit ebx: return value (int) Tell kernel to end current process, cleaning up everything
5 printk ebx: addr of a string Print a message to screen
6 thread_new ebx: entry point Creates a new thread
ecx: data pointer
edx: stack pointer
7 irq_wait ebx: irq number Waits for an IRQ (requires privilege PL_DRIVER)
8 proc_priv none Returns current process privilege level
9 sbrk ebx: size Allocates some memory
10 brk ebx: new_end Allocates/frees some memory
11 mmap (see linux specs) not implemented
12 munmap (see linux specs) not implemented
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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