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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
10 sbrk ebx: size Allocates some memory
11 brk ebx: new_end Allocates/frees some memory
12 mmap (see linux specs) not implemented
13 munmap (see linux specs) not implemented
20 open ebx: char* filename open a file, returns a descriptor
ecx: mode
21 open_relative ebx: root open a file, returns a descriptor
ecx: char* filename
edx: mode
22 stat ebx: char* filename get file info
ecx: struct* info
23 stat_relative ebx: root get file info
ecx: char* filename
edx: struct* info
24 statf ebx: file descriptor get file info
ecx: struct* info
25 close ebx: file descriptor close file
26 read ebx: file descriptor read from file
ecx: offset
edx: length
esi: pointer to data
27 write ebx: file descriptor write to file
ecx: offset
edx: length
esi: pointer to data
28 link ebx: char* from symlink/hardlink/mount/...
ecx: char* to
edx: mode
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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