#include <core/system.h>

Typedefs
typedef long(*)	syscall_t(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t)

Functions
void	syscall_dispatch (unsigned long nr, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5)
	Runs a system call that the current thread made from user mode.

Variables
const syscall_t	syscall_table []
const size_t	syscall_cnt

Typedef Documentation

◆ syscall_t

typedef long(*) syscall_t(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t)

Definition at line 8 of file syscall.h.

Function Documentation

◆ syscall_dispatch()

void syscall_dispatch	(	unsigned long	nr,
		uintptr_t	a1,
		uintptr_t	a2,
		uintptr_t	a3,
		uintptr_t	a4,
		uintptr_t	a5 )

Runs a system call that the current thread made from user mode.

The architecture's arch_syscall() calls it with the number and the arguments, as they came in registers.

The call's result is set as the thread's result to return to user mode (arch_syscall_return()), except for sigreturn's: its registers are the ones it restored from the signal frame. A call that doesn't return (exit, or an execve that worked) doesn't come back here.

Parameters

nr	the system call's number (SYS_*)
a1	its first argument
a2	its second argument
a3	its third argument
a4	its fourth argument
a5	its fifth argument

Definition at line 313 of file syscall.c.

References arch_syscall_return(), curproc, curthread, printk(), syscall_cnt, syscall_dispatch(), syscall_table, and thread_files_release().

Referenced by arch_syscall(), arch_syscall(), and syscall_dispatch().

Variable Documentation

◆ syscall_cnt

const size_t syscall_cnt

extern

Definition at line 293 of file syscall.c.

Referenced by syscall_dispatch().

◆ syscall_table

const syscall_t syscall_table[]

extern

Definition at line 197 of file syscall.c.