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syscalls.h
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syscalls.h
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#ifndef SYSCALL_H
#define SYSCALL_H
#include <stdint.h>
#include "kernel/process.h"
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/times.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <stdio.h>
#define NUM_SYSCALLS 10
#define INT_VEC_SYSCALL 0x80
static unsigned int __attribute__((used)) INT_VEC_SYS_CALL = 0x80;
// system call numbers
#define SYS_exit 1
#define SYS_close 2
#define SYS_open 3
#define SYS_read 4
#define SYS_write 5
#define SYS_lseek 6
#define SYS_link 7
#define SYS_unlink 8
#define SYS_getpid 9
#define SYS_fork 10
#define SYS_kill 11
#define SYS_execve 12
#define SYS_sbrk 13
#define SYS_stat 14
#define SYS_fstat 15
#define SYS_isatty 16
#define SYS_times 17
#define SYS_wait 18
// system call table
int32_t (*syscall_table[NUM_SYSCALLS])();
// user level interface for system calls
// kernel implementation of system calls
int32_t sys_exit (context_t *c, uint32_t *args);
int32_t sys_close (context_t *c, uint32_t *args);
int32_t sys_open (context_t *c, uint32_t *args);
int32_t sys_read (context_t *c, uint32_t *args);
int32_t sys_write (context_t *c, uint32_t *args);
int32_t sys_lseek (context_t *c, uint32_t *args);
int32_t sys_link (context_t *c, uint32_t *args);
int32_t sys_unlink (context_t *c, uint32_t *args);
int32_t sys_getpid (context_t *c, uint32_t *args);
int32_t sys_fork (context_t *c, uint32_t *args);
int32_t sys_kill (context_t *c, uint32_t *args);
int32_t sys_execve (context_t *c, uint32_t *args);
int32_t sys_sbrk (context_t *c, uint32_t *args);
int32_t sys_stat (context_t *c, uint32_t *args);
int32_t sys_fstat (context_t *c, uint32_t *args);
int32_t sys_isatty (context_t *c, uint32_t *args);
int32_t sys_times (context_t *c, uint32_t *args);
int32_t sys_wait (context_t *c, uint32_t *args);
void syscall_init(void);
void syscall_isr(int32_t vector, int32_t code);
#endif