MentOS/mentos/inc/system/syscall.h

///                MentOS, The Mentoring Operating system project
/// @file   syscall.h
/// @brief  System Call handler definition.
/// @copyright (c) 2019 This file is distributed under the MIT License.
/// See LICENSE.md for details.

#pragma once

#include "kernel.h"

/// @brief Initialize the system calls.
void syscall_init();

/// @brief Handler for the system calls.
void syscall_handler(pt_regs *r);

// Return result in eax ("=a").
// System call number in eax ("a").
#define DEFN_SYSCALL0(__res, num)                                              \
	__asm__ __volatile__("INT $0x80" : "=a"(__res) : "a"(num))

// Return result in eax ("=a").
// System call number in eax ("a").
// p1 in ebx ("+b").
#define DEFN_SYSCALL1(__res, num, p1)                                          \
	__asm__ __volatile__("INT $0x80" : "=a"(__res), "+b"(p1) : "a"(num))

#define DEFN_SYSCALL2(__res, num, p1, p2)                                      \
	__asm__ __volatile__("INT $0x80"                                           \
						 : "=a"(__res), "+b"(p1), "+c"(p2)                     \
						 : "a"(num));

#define DEFN_SYSCALL3(__res, num, p1, p2, p3)                                  \
	__asm__ __volatile__("INT $0x80"                                           \
						 : "=a"(__res), "+b"(p1), "+c"(p2), "+d"(p3)           \
						 : "a"(num))

#define DEFN_SYSCALL4(__res, num, p1, p2, p3, p4)                              \
	__asm__ __volatile__("INT $0x80"                                           \
						 : "=a"(__res), "+b"(p1), "+c"(p2), "+d"(p3), "+S"(p4) \
						 : "a"(num))

#define DEFN_SYSCALL5(fn, num, P1, P2, P3, P4, P5)                             \
	int syscall_##fn(P1 p1, P2 p2, P3 p3, P4 p4, P5 p5)                        \
	{                                                                          \
		int __res;                                                             \
		__asm__ __volatile__("push eax\n movl %2,%%ebx; INT 0x80; pop %%ebx"   \
							 : "=a"(__res)                                     \
							 : "0"(num), "r"((int)(p1)), "c"((int)(p2)),       \
							   "d"((int)(p3)), "S"((int)(p4)),                 \
							   "D"((int)(p5)));                                \
		return __res;                                                          \
	}

#define __NR_exit 1

#define __NR_fork 2

#define __NR_read 3

#define __NR_write 4

#define __NR_open 5

#define __NR_close 6

#define __NR_waitpid 7

#define __NR_creat 8

#define __NR_link 9

#define __NR_unlink 10

#define __NR_execve 11

#define __NR_chdir 12

#define __NR_time 13

#define __NR_mknod 14

#define __NR_chmod 15

#define __NR_lchown 16

#define __NR_stat 18

#define __NR_lseek 19

#define __NR_getpid 20

#define __NR_mount 21

#define __NR_oldumount 22

#define __NR_setuid 23

#define __NR_getuid 24

#define __NR_stime 25

#define __NR_ptrace 26

#define __NR_alarm 27

#define __NR_fstat 28

#define __NR_pause 29

#define __NR_utime 30

#define __NR_access 33

#define __NR_nice 34

#define __NR_sync 36

#define __NR_kill 37

#define __NR_rename 38

#define __NR_mkdir 39

#define __NR_rmdir 40

#define __NR_dup 41

#define __NR_pipe 42

#define __NR_times 43

#define __NR_brk 45

#define __NR_setgid 46

#define __NR_getgid 47

#define __NR_signal 48

#define __NR_geteuid 49

#define __NR_getegid 50

#define __NR_acct 51

#define __NR_umount 52

#define __NR_ioctl 54

#define __NR_fcntl 55

#define __NR_setpgid 57

#define __NR_olduname 59

#define __NR_umask 60

#define __NR_chroot 61

#define __NR_ustat 62

#define __NR_dup2 63

#define __NR_getppid 64

#define __NR_getpgrp 65

#define __NR_setsid 66

#define __NR_sigaction 67

#define __NR_sgetmask 68

#define __NR_ssetmask 69

#define __NR_setreuid 70

#define __NR_setregid 71

#define __NR_sigsuspend 72

#define __NR_sigpending 73

#define __NR_sethostname 74

#define __NR_setrlimit 75

#define __NR_getrlimit 76

#define __NR_getrusage 77

#define __NR_gettimeofday 78

#define __NR_settimeofday 79

#define __NR_getgroups 80

#define __NR_setgroups 81

#define __NR_symlink 83

#define __NR_lstat 84

#define __NR_readlink 85

#define __NR_uselib 86

#define __NR_swapon 87

#define __NR_reboot 88

#define __NR_readdir 89

#define __NR_mmap 90

#define __NR_munmap 91

#define __NR_truncate 92

#define __NR_ftruncate 93

#define __NR_fchmod 94

#define __NR_fchown 95

#define __NR_getpriority 96

#define __NR_setpriority 97

#define __NR_statfs 99

#define __NR_fstatfs 100

#define __NR_ioperm 101

#define __NR_socketcall 102

#define __NR_syslog 103

#define __NR_setitimer 104

#define __NR_getitimer 105

#define __NR_newstat 106

#define __NR_newlstat 107

#define __NR_newfstat 108

#define __NR_uname 109

#define __NR_iopl 110

#define __NR_vhangup 111

#define __NR_idle 112

#define __NR_vm86old 113

#define __NR_wait4 114

#define __NR_swapoff 115

#define __NR_sysinfo 116

#define __NR_ipc 117

#define __NR_fsync 118

#define __NR_sigreturn 119

#define __NR_clone 120

#define __NR_setdomainname 121

#define __NR_newuname 122

#define __NR_modify_ldt 123

#define __NR_adjtimex 124

#define __NR_mprotect 125

#define __NR_sigprocmask 126

#define __NR_create_module 127

#define __NR_init_module 128

#define __NR_delete_module 129

#define __NR_get_kernel_syms 130

#define __NR_quotactl 131

#define __NR_getpgid 132

#define __NR_fchdir 133

#define __NR_bdflush 134

#define __NR_sysfs 135

#define __NR_personality 136

#define __NR_setfsuid 138

#define __NR_setfsgid 139

#define __NR_llseek 140

#define __NR_getdents 141

#define __NR_select 142

#define __NR_flock 143

#define __NR_msync 144

#define __NR_readv 145

#define __NR_writev 146

#define __NR_getsid 147

#define __NR_fdatasync 148

#define __NR_sysctl 149

#define __NR_mlock 150

#define __NR_munlock 151

#define __NR_mlockall 152

#define __NR_munlockall 153

#define __NR_sched_setparam 154

#define __NR_sched_getparam 155

#define __NR_sched_setscheduler 156

#define __NR_sched_getscheduler 157

#define __NR_sched_yield 158

#define __NR_sched_get_priority_max 159

#define __NR_sched_get_priority_min 160

#define __NR_sched_rr_get_interval 161

#define __NR_nanosleep 162

#define __NR_mremap 163

#define __NR_setresuid 164

#define __NR_getresuid 165

#define __NR_vm86 166

#define __NR_query_module 167

#define __NR_poll 168

#define __NR_nfsservctl 169

#define __NR_setresgid 170

#define __NR_getresgid 171

#define __NR_prctl 172

#define __NR_rt_sigreturn 173

#define __NR_rt_sigaction 174

#define __NR_rt_sigprocmask 175

#define __NR_rt_sigpending 176

#define __NR_rt_sigtimedwait 177

#define __NR_rt_sigqueueinfo 178

#define __NR_rt_sigsuspend 179

#define __NR_pread 180

#define __NR_pwrite 181

#define __NR_chown 182

#define __NR_getcwd 183

#define __NR_capget 184

#define __NR_capset 185

#define __NR_sigaltstack 186

#define __NR_sendfile 187

#define __NR_vfork 188

#define __NR_free 189 // TODO: remove me!

#define SYSCALL_NUMBER 190

//-----------------------------------------------------------------------------