zinnia/syscalls/dispatch.c

#include <zinnia/compiler.h>
#include <zinnia/errno.h>
#include <zinnia/print.h>
#include <zinnia/sched.h>
#include <zinnia/syscall.h>
#include <zinnia/types.h>
#include <zinnia/utils.h>

const struct syscall syscall_table[256] = {
    [0] = {sys_exit, 0},
    [1] = {sys_syslog, 0},
    [2] = {sys_getuname, 0},
    [3] = {sys_setuname, 0},
    [4] = {sys_archctl, 0},
    [5] = {sys_reboot, 0},
    [6] = {sys_mmap, 0},
    [7] = {sys_munmap, 0},
    [8] = {sys_mprotect, 0},
    [9] = {sys_madvise, 0},
    [10] = {sys_sigprocmask, 0},
    [11] = {sys_sigsuspend, 0},
    [12] = {sys_sigpending, 0},
    [13] = {sys_sigaction, 0},
    [14] = {sys_sigtimedwait, 0},
    [15] = {sys_sigaltstack, 0},
    [16] = {sys_sigreturn, 0},
    [17] = {sys_sigqueue, 0},
    [18] = {sys_execve, 0},
    [19] = {sys_fexecve, 0},
    [20] = {sys_fork, SYSKIND_CONTEXT},
    [21] = {sys_kill, 0},
    [22] = {sys_gettid, 0},
    [23] = {sys_getpid, 0},
    [24] = {sys_getppid, 0},
    [25] = {sys_waitid, 0},
    [26] = {sys_waitpid, 0},
    [27] = {sys_pread, 0},
    [28] = {sys_readv, 0},
    [29] = {sys_pwrite, 0},
    [30] = {sys_writev, 0},
    [31] = {sys_seek, 0},
    [32] = {sys_ioctl, 0},
    [33] = {sys_openat, 0},
    [34] = {sys_close, 0},
    [35] = {sys_fstat, 0},
    [36] = {sys_fstatat, 0},
    [37] = {sys_statvfs, 0},
    [38] = {sys_fstatvfs, 0},
    [39] = {sys_faccessat, 0},
    [40] = {sys_fcntl, 0},
    [41] = {sys_ftruncate, 0},
    [42] = {sys_truncate, 0},
    [43] = {sys_fallocate, 0},
    [44] = {sys_fadvise, 0},
    [45] = {sys_utimensat, 0},
    [46] = {sys_mknodat, 0},
    [47] = {sys_getcwd, 0},
    [48] = {sys_chdir, 0},
    [49] = {sys_fchdir, 0},
    [50] = {sys_mkdirat, 0},
    [51] = {sys_rmdirat, 0},
    [52] = {sys_getdents, 0},
    [53] = {sys_renameat, 0},
    [54] = {sys_fchmod, 0},
    [55] = {sys_fchmodat, 0},
    [56] = {sys_fchownat, 0},
    [57] = {sys_linkat, 0},
    [58] = {sys_symlinkat, 0},
    [59] = {sys_unlinkat, 0},
    [60] = {sys_readlinkat, 0},
    [61] = {sys_flock, 0},
    [62] = {sys_ppoll, 0},
    [63] = {sys_dup, 0},
    [64] = {sys_dup3, 0},
    [65] = {sys_sync, 0},
    [66] = {sys_fsync, 0},
    [67] = {sys_fdatasync, 0},
    [68] = {sys_getgroups, 0},
    [69] = {sys_setgroups, 0},
    [70] = {sys_getsid, 0},
    [71] = {sys_setsid, 0},
    [72] = {sys_setuid, 0},
    [73] = {sys_getuid, 0},
    [74] = {sys_setgid, 0},
    [75] = {sys_getgid, 0},
    [76] = {sys_geteuid, 0},
    [77] = {sys_seteuid, 0},
    [78] = {sys_getegid, 0},
    [79] = {sys_setegid, 0},
    [80] = {sys_getpgid, 0},
    [81] = {sys_setpgid, 0},
    [82] = {sys_getresuid, 0},
    [83] = {sys_setresuid, 0},
    [84] = {sys_getresgid, 0},
    [85] = {sys_setresgid, 0},
    [86] = {sys_setreuid, 0},
    [87] = {sys_setregid, 0},
    [88] = {sys_umask, 0},
    [89] = {sys_pipe, 0},
    [90] = {sys_futex_wait, 0},
    [91] = {sys_futex_wake, 0},
    [92] = {sys_thread_create, 0},
    [93] = {sys_thread_kill, 0},
    [94] = {sys_thread_exit, 0},
    [95] = {sys_thread_setname, 0},
    [96] = {sys_thread_getname, 0},
    [97] = {sys_timer_create, 0},
    [98] = {sys_timer_set, 0},
    [99] = {sys_timer_get, 0},
    [100] = {sys_timer_getoverrun, 0},
    [101] = {sys_timer_delete, 0},
    [102] = {sys_itimer_get, 0},
    [103] = {sys_itimer_set, 0},
    [104] = {sys_clock_get, 0},
    [105] = {sys_clock_getres, 0},
    [106] = {sys_clock_set, 0},
    [107] = {sys_sleep, 0},
    [108] = {sys_yield, 0},
    [109] = {sys_chroot, 0},
    [110] = {sys_mount, 0},
    [111] = {sys_umount, 0},
    [112] = {sys_socket, 0},
    [113] = {sys_socketpair, 0},
    [114] = {sys_shutdown, 0},
    [115] = {sys_bind, 0},
    [116] = {sys_connect, 0},
    [117] = {sys_accept, 0},
    [118] = {sys_listen, 0},
    [119] = {sys_getpeername, 0},
    [120] = {sys_getsockname, 0},
    [121] = {sys_getsockopt, 0},
    [122] = {sys_setsockopt, 0},
    [123] = {sys_sendmsg, 0},
    [124] = {sys_recvmsg, 0},
    [125] = {sys_getentropy, 0},
    [126] = {sys_getrusage, 0},
    [127] = {sys_getrlimit, 0},
    [128] = {sys_setrlimit, 0},
    [129] = {sys_getpriority, 0},
    [130] = {sys_setpriority, 0},
    [131] = {sys_sched_getparam, 0},
    [132] = {sys_sched_setparam, 0},
    [133] = {sys_module_insert, 0},
    [134] = {sys_module_remove, 0},
    [135] = {sys_epoll_create, 0},
    [136] = {sys_epoll_ctl, 0},
    [137] = {sys_epoll_pwait, 0},
    [138] = {sys_timerfd_create, 0},
    [139] = {sys_timerfd_gettime, 0},
    [140] = {sys_timerfd_settime, 0},
    [141] = {sys_signalfd_create, 0},
    [142] = {sys_eventfd_create, 0},
    [143] = {sys_msync, 0},
    [144] = {sys_sysconf, 0},
};

void syscall_dispatch(struct arch_context* ctx) {
    const size_t num = ctx->ARCH_CTX_NUM;

    if (num >= ARRAY_SIZE(syscall_table) || syscall_table[num].handler == nullptr) {
        ctx->ARCH_CTX_RET0 = ENOSYS;
        return;
    }

    syscall_table[num].handler(ctx);
}