mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 01:06:01 +03:00
6b150c794a
It's now possible to load a .o file into the kernel via a syscall. The kernel will perform all the necessary ELF relocations, and then call the "module_init" symbol in the loaded module.
324 lines
11 KiB
C++
324 lines
11 KiB
C++
#pragma once
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#include <AK/Types.h>
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#ifdef __serenity__
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# include <LibC/fd_set.h>
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#endif
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extern "C" {
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struct timeval;
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struct timespec;
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struct sockaddr;
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typedef u32 socklen_t;
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}
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#define ENUMERATE_SYSCALLS \
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__ENUMERATE_SYSCALL(sleep) \
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__ENUMERATE_SYSCALL(yield) \
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__ENUMERATE_SYSCALL(putch) \
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__ENUMERATE_SYSCALL(open) \
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__ENUMERATE_SYSCALL(close) \
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__ENUMERATE_SYSCALL(read) \
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__ENUMERATE_SYSCALL(lseek) \
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__ENUMERATE_SYSCALL(kill) \
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__ENUMERATE_SYSCALL(getuid) \
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__ENUMERATE_SYSCALL(exit) \
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__ENUMERATE_SYSCALL(getgid) \
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__ENUMERATE_SYSCALL(getpid) \
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__ENUMERATE_SYSCALL(waitpid) \
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__ENUMERATE_SYSCALL(mmap) \
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__ENUMERATE_SYSCALL(munmap) \
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__ENUMERATE_SYSCALL(get_dir_entries) \
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__ENUMERATE_SYSCALL(lstat) \
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__ENUMERATE_SYSCALL(getcwd) \
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__ENUMERATE_SYSCALL(gettimeofday) \
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__ENUMERATE_SYSCALL(gethostname) \
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__ENUMERATE_SYSCALL(chdir) \
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__ENUMERATE_SYSCALL(uname) \
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__ENUMERATE_SYSCALL(set_mmap_name) \
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__ENUMERATE_SYSCALL(readlink) \
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__ENUMERATE_SYSCALL(write) \
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__ENUMERATE_SYSCALL(ttyname_r) \
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__ENUMERATE_SYSCALL(stat) \
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__ENUMERATE_SYSCALL(getsid) \
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__ENUMERATE_SYSCALL(setsid) \
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__ENUMERATE_SYSCALL(getpgid) \
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__ENUMERATE_SYSCALL(setpgid) \
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__ENUMERATE_SYSCALL(getpgrp) \
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__ENUMERATE_SYSCALL(fork) \
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__ENUMERATE_SYSCALL(execve) \
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__ENUMERATE_SYSCALL(geteuid) \
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__ENUMERATE_SYSCALL(getegid) \
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__ENUMERATE_REMOVED_SYSCALL(isatty) \
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__ENUMERATE_SYSCALL(getdtablesize) \
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__ENUMERATE_SYSCALL(dup) \
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__ENUMERATE_SYSCALL(dup2) \
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__ENUMERATE_SYSCALL(sigaction) \
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__ENUMERATE_SYSCALL(getppid) \
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__ENUMERATE_SYSCALL(umask) \
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__ENUMERATE_SYSCALL(getgroups) \
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__ENUMERATE_SYSCALL(setgroups) \
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__ENUMERATE_SYSCALL(sigreturn) \
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__ENUMERATE_SYSCALL(sigprocmask) \
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__ENUMERATE_SYSCALL(sigpending) \
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__ENUMERATE_SYSCALL(pipe) \
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__ENUMERATE_SYSCALL(killpg) \
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__ENUMERATE_SYSCALL(setuid) \
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__ENUMERATE_SYSCALL(setgid) \
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__ENUMERATE_SYSCALL(alarm) \
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__ENUMERATE_SYSCALL(fstat) \
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__ENUMERATE_SYSCALL(access) \
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__ENUMERATE_SYSCALL(fcntl) \
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__ENUMERATE_SYSCALL(ioctl) \
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__ENUMERATE_SYSCALL(mkdir) \
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__ENUMERATE_SYSCALL(times) \
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__ENUMERATE_SYSCALL(utime) \
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__ENUMERATE_SYSCALL(sync) \
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__ENUMERATE_SYSCALL(ptsname_r) \
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__ENUMERATE_SYSCALL(select) \
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__ENUMERATE_SYSCALL(unlink) \
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__ENUMERATE_SYSCALL(poll) \
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__ENUMERATE_SYSCALL(read_tsc) \
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__ENUMERATE_SYSCALL(rmdir) \
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__ENUMERATE_SYSCALL(chmod) \
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__ENUMERATE_SYSCALL(usleep) \
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__ENUMERATE_SYSCALL(socket) \
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__ENUMERATE_SYSCALL(bind) \
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__ENUMERATE_SYSCALL(accept) \
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__ENUMERATE_SYSCALL(listen) \
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__ENUMERATE_SYSCALL(connect) \
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__ENUMERATE_SYSCALL(create_shared_buffer) \
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__ENUMERATE_SYSCALL(share_buffer_with) \
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__ENUMERATE_SYSCALL(get_shared_buffer) \
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__ENUMERATE_SYSCALL(release_shared_buffer) \
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__ENUMERATE_SYSCALL(link) \
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__ENUMERATE_SYSCALL(chown) \
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__ENUMERATE_SYSCALL(fchmod) \
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__ENUMERATE_SYSCALL(symlink) \
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__ENUMERATE_SYSCALL(restore_signal_mask) \
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__ENUMERATE_SYSCALL(get_shared_buffer_size) \
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__ENUMERATE_SYSCALL(seal_shared_buffer) \
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__ENUMERATE_SYSCALL(sendto) \
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__ENUMERATE_SYSCALL(recvfrom) \
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__ENUMERATE_SYSCALL(getsockopt) \
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__ENUMERATE_SYSCALL(setsockopt) \
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__ENUMERATE_SYSCALL(create_thread) \
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__ENUMERATE_SYSCALL(gettid) \
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__ENUMERATE_SYSCALL(donate) \
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__ENUMERATE_SYSCALL(rename) \
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__ENUMERATE_SYSCALL(shm_open) \
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__ENUMERATE_SYSCALL(shm_unlink) \
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__ENUMERATE_SYSCALL(ftruncate) \
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__ENUMERATE_SYSCALL(systrace) \
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__ENUMERATE_SYSCALL(exit_thread) \
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__ENUMERATE_SYSCALL(mknod) \
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__ENUMERATE_SYSCALL(writev) \
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__ENUMERATE_SYSCALL(beep) \
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__ENUMERATE_SYSCALL(getsockname) \
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__ENUMERATE_SYSCALL(getpeername) \
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__ENUMERATE_SYSCALL(sched_setparam) \
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__ENUMERATE_SYSCALL(sched_getparam) \
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__ENUMERATE_SYSCALL(fchown) \
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__ENUMERATE_SYSCALL(halt) \
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__ENUMERATE_SYSCALL(reboot) \
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__ENUMERATE_SYSCALL(mount) \
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__ENUMERATE_SYSCALL(umount) \
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__ENUMERATE_SYSCALL(dump_backtrace) \
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__ENUMERATE_SYSCALL(dbgputch) \
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__ENUMERATE_SYSCALL(dbgputstr) \
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__ENUMERATE_SYSCALL(watch_file) \
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__ENUMERATE_SYSCALL(share_buffer_globally) \
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__ENUMERATE_SYSCALL(set_process_icon) \
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__ENUMERATE_SYSCALL(mprotect) \
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__ENUMERATE_SYSCALL(realpath) \
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__ENUMERATE_SYSCALL(get_process_name) \
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__ENUMERATE_SYSCALL(fchdir) \
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__ENUMERATE_SYSCALL(getrandom) \
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__ENUMERATE_SYSCALL(setkeymap) \
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__ENUMERATE_SYSCALL(clock_gettime) \
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__ENUMERATE_SYSCALL(clock_nanosleep) \
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__ENUMERATE_SYSCALL(openat) \
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__ENUMERATE_SYSCALL(join_thread) \
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__ENUMERATE_SYSCALL(module_load) \
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__ENUMERATE_SYSCALL(module_unload)
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namespace Syscall {
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enum Function {
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#undef __ENUMERATE_SYSCALL
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#undef __ENUMERATE_REMOVED_SYSCALL
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#define __ENUMERATE_REMOVED_SYSCALL(x) SC_##x,
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#define __ENUMERATE_SYSCALL(x) SC_##x,
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ENUMERATE_SYSCALLS
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#undef __ENUMERATE_SYSCALL
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#undef __ENUMERATE_REMOVED_SYSCALL
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__Count
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};
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inline constexpr const char* to_string(Function function)
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{
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switch (function) {
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#undef __ENUMERATE_SYSCALL
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#undef __ENUMERATE_REMOVED_SYSCALL
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#define __ENUMERATE_REMOVED_SYSCALL(x) \
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case SC_##x: \
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return #x " (removed)";
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#define __ENUMERATE_SYSCALL(x) \
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case SC_##x: \
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return #x;
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ENUMERATE_SYSCALLS
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#undef __ENUMERATE_SYSCALL
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#undef __ENUMERATE_REMOVED_SYSCALL
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default:
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break;
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}
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return "Unknown";
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}
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#ifdef __serenity__
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struct SC_mmap_params {
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uint32_t addr;
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uint32_t size;
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int32_t prot;
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int32_t flags;
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int32_t fd;
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int32_t offset; // FIXME: 64-bit off_t?
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const char* name { nullptr };
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};
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struct SC_open_params {
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const char* path;
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int path_length;
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int options;
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u16 mode;
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};
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struct SC_openat_params {
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int dirfd;
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const char* path;
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int path_length;
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int options;
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u16 mode;
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};
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struct SC_select_params {
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int nfds;
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fd_set* readfds;
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fd_set* writefds;
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fd_set* exceptfds;
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struct timeval* timeout;
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};
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struct SC_clock_nanosleep_params {
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int clock_id;
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int flags;
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const struct timespec* requested_sleep;
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struct timespec* remaining_sleep;
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};
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struct SC_sendto_params {
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int sockfd;
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const void* data;
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size_t data_length;
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int flags;
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const sockaddr* addr;
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socklen_t addr_length;
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};
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struct SC_recvfrom_params {
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int sockfd;
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void* buffer;
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size_t buffer_length;
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int flags;
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sockaddr* addr;
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socklen_t* addr_length;
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};
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struct SC_getsockopt_params {
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int sockfd;
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int level;
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int option;
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void* value;
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socklen_t* value_size;
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};
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struct SC_setsockopt_params {
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int sockfd;
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int level;
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int option;
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const void* value;
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socklen_t value_size;
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};
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struct SC_create_thread_params {
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unsigned int m_detach_state = 0; // JOINABLE or DETACHED
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int m_schedule_priority = 2; // ThreadPriority::Normal
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// FIXME: Implment guard pages in create_thread (unreadable pages at "overflow" end of stack)
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// "If an implementation rounds up the value of guardsize to a multiple of {PAGESIZE},
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// a call to pthread_attr_getguardsize() specifying attr shall store in the guardsize
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// parameter the guard size specified by the previous pthread_attr_setguardsize() function call"
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// ... ok, if you say so posix. Guess we get to lie to people about guard page size
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unsigned int m_guard_page_size = 0; // Rounded up to PAGE_SIZE
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unsigned int m_reported_guard_page_size = 0; // The lie we tell callers
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unsigned int m_stack_size = 4 * MB; // Default PTHREAD_STACK_MIN
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void* m_stack_location = nullptr; // nullptr means any, o.w. process virtual address
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};
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void initialize();
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int sync();
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inline u32 invoke(Function function)
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{
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u32 result;
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asm volatile("int $0x82"
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: "=a"(result)
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: "a"(function)
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: "memory");
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return result;
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}
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template<typename T1>
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inline u32 invoke(Function function, T1 arg1)
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{
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u32 result;
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asm volatile("int $0x82"
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: "=a"(result)
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: "a"(function), "d"((u32)arg1)
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: "memory");
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return result;
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}
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template<typename T1, typename T2>
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inline u32 invoke(Function function, T1 arg1, T2 arg2)
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{
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u32 result;
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asm volatile("int $0x82"
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: "=a"(result)
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: "a"(function), "d"((u32)arg1), "c"((u32)arg2)
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: "memory");
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return result;
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}
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template<typename T1, typename T2, typename T3>
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inline u32 invoke(Function function, T1 arg1, T2 arg2, T3 arg3)
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{
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u32 result;
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asm volatile("int $0x82"
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: "=a"(result)
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: "a"(function), "d"((u32)arg1), "c"((u32)arg2), "b"((u32)arg3)
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: "memory");
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return result;
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}
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#endif
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}
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#undef __ENUMERATE_SYSCALL
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#define __ENUMERATE_SYSCALL(x) using Syscall::SC_##x;
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#define __ENUMERATE_REMOVED_SYSCALL(x)
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ENUMERATE_SYSCALLS
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#undef __ENUMERATE_SYSCALL
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#undef __ENUMERATE_REMOVED_SYSCALL
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#define syscall Syscall::invoke
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