mirror of
https://github.com/ish-app/ish.git
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121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
#include "debug.h"
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#include "kernel/calls.h"
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#include "emu/interrupt.h"
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#define NUM_SYSCALLS 400
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dword_t syscall_stub() {
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return _ENOSYS;
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}
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#pragma GCC diagnostic ignored "-Winitializer-overrides"
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syscall_t syscall_table[] = {
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[0 ... NUM_SYSCALLS] = NULL,
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[1] = (syscall_t) sys_exit,
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[2] = (syscall_t) sys_fork,
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[3] = (syscall_t) sys_read,
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[4] = (syscall_t) sys_write,
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[5] = (syscall_t) sys_open,
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[6] = (syscall_t) sys_close,
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[7] = (syscall_t) sys_waitpid,
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[10] = (syscall_t) sys_unlink,
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[11] = (syscall_t) _sys_execve,
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[12] = (syscall_t) sys_chdir,
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[13] = (syscall_t) sys_time,
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[19] = (syscall_t) sys_lseek,
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[20] = (syscall_t) sys_getpid,
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[21] = (syscall_t) sys_mount,
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[24] = (syscall_t) sys_getuid,
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[47] = (syscall_t) sys_getgid,
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[33] = (syscall_t) sys_access,
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[37] = (syscall_t) sys_kill,
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[41] = (syscall_t) sys_dup,
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[45] = (syscall_t) sys_brk,
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[49] = (syscall_t) sys_geteuid,
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[54] = (syscall_t) sys_ioctl,
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[57] = (syscall_t) sys_setpgid,
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[60] = (syscall_t) sys_umask,
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[63] = (syscall_t) sys_dup2,
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[64] = (syscall_t) sys_getppid,
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[65] = (syscall_t) sys_getpgrp,
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[85] = (syscall_t) sys_readlink,
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[90] = (syscall_t) sys_mmap,
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[91] = (syscall_t) sys_munmap,
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[94] = (syscall_t) sys_fchmod,
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[102] = (syscall_t) sys_socketcall,
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[104] = (syscall_t) sys_setitimer,
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[114] = (syscall_t) sys_wait4,
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[116] = (syscall_t) sys_sysinfo,
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[120] = (syscall_t) sys_clone,
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[122] = (syscall_t) _sys_uname,
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[125] = (syscall_t) sys_mprotect,
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[132] = (syscall_t) sys_getpgid,
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[140] = (syscall_t) sys__llseek,
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[143] = (syscall_t) sys_flock,
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[145] = (syscall_t) sys_readv,
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[146] = (syscall_t) sys_writev,
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[162] = (syscall_t) sys_nanosleep,
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[168] = (syscall_t) sys_poll,
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[183] = (syscall_t) sys_getcwd,
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[173] = (syscall_t) sys_rt_sigreturn,
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[174] = (syscall_t) sys_rt_sigaction,
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[175] = (syscall_t) sys_rt_sigprocmask,
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[187] = (syscall_t) sys_sendfile,
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[190] = (syscall_t) sys_vfork,
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[192] = (syscall_t) sys_mmap2,
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[195] = (syscall_t) sys_stat64,
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[196] = (syscall_t) sys_lstat64,
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[197] = (syscall_t) sys_fstat64,
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[199] = (syscall_t) sys_getuid32,
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/* [200] = (syscall_t) sys_getgid32, */
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[201] = (syscall_t) sys_geteuid32,
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[206] = (syscall_t) syscall_stub,
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[207] = (syscall_t) sys_fchown32,
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[219] = (syscall_t) sys_madvise,
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[220] = (syscall_t) sys_getdents64,
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[221] = (syscall_t) sys_fcntl64,
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[224] = (syscall_t) sys_gettid,
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[238] = (syscall_t) sys_tkill,
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[239] = (syscall_t) sys_sendfile64,
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[243] = (syscall_t) sys_set_thread_area,
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[252] = (syscall_t) sys_exit_group,
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[258] = (syscall_t) sys_set_tid_address,
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[265] = (syscall_t) sys_clock_gettime,
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[268] = (syscall_t) sys_statfs64,
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[269] = (syscall_t) sys_fstatfs64,
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[295] = (syscall_t) sys_openat,
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[300] = (syscall_t) sys_fstatat64,
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[301] = (syscall_t) sys_unlinkat,
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[320] = (syscall_t) sys_utimensat,
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};
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void handle_interrupt(struct cpu_state *cpu, int interrupt) {
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TRACELN_(instr, "\n");
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TRACE("int %d ", interrupt);
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if (interrupt == INT_SYSCALL) {
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int syscall_num = cpu->eax;
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if (syscall_num >= NUM_SYSCALLS || syscall_table[syscall_num] == NULL) {
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println("missing syscall %d", syscall_num);
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send_signal(current, SIGSYS_);
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} else {
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STRACE("%d call %-3d ", current->pid, syscall_num);
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int result = syscall_table[syscall_num](cpu->ebx, cpu->ecx, cpu->edx, cpu->esi, cpu->edi, cpu->ebp);
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STRACELN(" = 0x%x", result);
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cpu->eax = result;
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}
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} else if (interrupt == INT_GPF) {
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// page fault handling is a thing
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// TODO SIGSEGV
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println("page fault at %x", cpu->segfault_addr);
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deliver_signal(current, SIGSEGV_);
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} else if (interrupt == INT_UNDEFINED) {
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println("illegal instruction");
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deliver_signal(current, SIGILL_);
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} else {
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println("exiting");
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sys_exit(interrupt);
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}
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receive_signals();
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}
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