/**
** @file	syscalls.h
**
** @author	CSCI-452 class of 20245
**
** @brief	System call declarations
*/

#ifndef SYSCALLS_H_
#define SYSCALLS_H_

#include <common.h>

/*
** General (C and/or assembly) definitions
*/

/*
** system call codes
**
** these are used in the user-level C library stub functions,
** and are defined here as CPP macros instead of as an enum
** so that they can be used from assembly
*/

#define SYS_exit 0
#define SYS_waitpid 1
#define SYS_fork 2
#define SYS_exec 3
#define SYS_read 4
#define SYS_write 5
#define SYS_getpid 6
#define SYS_getppid 7
#define SYS_gettime 8
#define SYS_getprio 9
#define SYS_setprio 10
#define SYS_kill 11
#define SYS_sleep 12

// UPDATE THIS DEFINITION IF MORE SYSCALLS ARE ADDED!
#define N_SYSCALLS 13

// dummy system call code for testing our ISR
#define SYS_bogus 0xbad

// interrupt vector entry for system calls
#define VEC_SYSCALL 0x80

#ifndef ASM_SRC

/*
** Start of C-only definitions
*/

/*
** Types
*/

/*
** Globals
*/

/*
** Prototypes
*/

#ifdef KERNEL_SRC

/**
** Name:  sys_init
**
** Syscall module initialization routine
*/
void sys_init(void);

#endif /* KERNEL_SRC */

#endif /* !ASM_SRC */

#endif