These are some of the files essential to the
system call on the ARM architecture.
Because glibc provides no wrapper for this function,
it must be called directly with
System calls are very dependent on architecture, both
in how they are invoked as well as what calls are available to be made.
include/linux/syscalls.h file provides architecture independent
forward declarations of all kernel system calls. This is the kernel's internal
interface to system call functions.
arch/arm/include/uapi/asm/unistd.h file provides ARM architecture
specific definitions of system call numbers.
arch/arm/kernel/entry-common.S file provides the ARM architecture specific entry point for system calls.
installs system call numbers and associated function addresses into the ARM hardware's system call table.
The following file enables kernel modules to be loaded and unloaded dynamically on an online system.
contains kernel code related to modules.
Of particular interest are the
system call definitions provided in that file.