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#include <lemon/syscall.h>
#include <stddef.h>
#include <bits/ensure.h>
#include <abi-bits/pid_t.h>
#include <mlibc/debug.hpp>
#include <mlibc/all-sysdeps.hpp>
#include <mlibc/thread-entry.hpp>
#include <errno.h>
#include <sys/resource.h>
namespace mlibc{
int sys_futex_tid(){
return syscall(SYS_GETTID);
}
int sys_futex_wait(int *pointer, int expected, const struct timespec *time){
return syscall(SYS_FUTEX_WAIT, pointer, expected);
}
int sys_futex_wake(int *pointer) {
return syscall(SYS_FUTEX_WAKE, pointer);
}
int sys_tcb_set(void* pointer){
syscall(SYS_SET_FS_BASE, (uintptr_t)pointer);
return 0;
}
int sys_vm_map(void *hint, size_t size, int prot, int flags, int fd, off_t offset, void **window) {
__ensure(flags & MAP_ANONYMOUS);
return syscall(SYS_MMAP, (uintptr_t)window, (size + 0xFFF) & ~static_cast<size_t>(0xFFF), (uintptr_t)hint, flags);
}
int sys_vm_unmap(void* address, size_t size) {
__ensure(!(size & 0xFFF));
long ret = syscall(SYS_MUNMAP, (uintptr_t)address, (size + 0xFFF) & ~static_cast<size_t>(0xFFF));
return ret;
}
int sys_anon_allocate(size_t size, void **pointer) {
return sys_vm_map(nullptr, size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS, -1, 0, pointer);
}
int sys_anon_free(void *pointer, size_t size) {
return sys_vm_unmap(pointer, size);
}
void sys_libc_panic(){
sys_libc_log("libc panic!");
__builtin_trap();
for(;;);
}
void sys_libc_log(const char* msg){
syscall(0, (uintptr_t)msg);
}
#ifndef MLIBC_BUILDING_RTDL
void sys_exit(int status){
syscall(SYS_EXIT, status);
__builtin_unreachable();
}
pid_t sys_getpid(){
uint64_t _pid;
syscall(SYS_GETPID, (uintptr_t)&_pid);
pid_t pid = _pid;
return pid;
}
pid_t sys_getppid(){
return syscall(SYS_GETPPID);
}
int sys_clock_get(int clock, time_t *secs, long *nanos) {
syscall(SYS_UPTIME, nanos);
*secs = (*nanos) / 1000000000;
*nanos = (*nanos) - (*secs) * 1000000000;
return 0;
}
int sys_getcwd(char *buffer, size_t size){
return syscall(SYS_GET_CWD, buffer, size);
}
int sys_chdir(const char *path){
syscall(SYS_CHDIR, path);
return 0;
}
int sys_sleep(time_t* sec, long* nanosec){
syscall(SYS_NANO_SLEEP, (*sec) * 1000000000 + (*nanosec));
return 0;
}
uid_t sys_getuid(){
return syscall(SYS_GETUID);
}
uid_t sys_geteuid(){
return syscall(SYS_GETEUID);
}
int sys_setuid(uid_t uid){
return -syscall(SYS_SETUID, uid);
}
int sys_seteuid(uid_t euid){
return -syscall(SYS_SETEUID, euid);
}
gid_t sys_getgid(){
return syscall(SYS_GETGID);
}
gid_t sys_getegid(){
return syscall(SYS_GETEGID);
}
int sys_setgid(gid_t gid){
mlibc::infoLogger() << "mlibc: sys_setgid is a stub" << frg::endlog;
return 0;
}
int sys_setegid(gid_t egid){
mlibc::infoLogger() << "mlibc: sys_setegid is a stub" << frg::endlog;
return 0;
}
void sys_yield(){
syscall(SYS_YIELD);
}
int sys_clone(void *tcb, pid_t *tid_out, void *stack){
pid_t tid = syscall(SYS_SPAWN_THREAD, __mlibc_start_thread, stack);
if(tid < 0){
errno = tid;
return -1;
}
*tid_out = tid;
return 0;
}
void sys_thread_exit(){
syscall(SYS_EXIT_THREAD);
__builtin_unreachable();
}
int sys_waitpid(pid_t pid, int *status, int flags, struct rusage *ru, pid_t *ret_pid){
if(ru) {
mlibc::infoLogger() << "mlibc: struct rusage in sys_waitpid is unsupported" << frg::endlog;
return ENOSYS;
}
pid_t ret = syscall(SYS_WAIT_PID, pid, status, flags);
if(ret < 0){
return -ret;
}
*ret_pid = ret;
return 0;
}
int sys_fork(pid_t *child){
long pid = syscall(SYS_FORK, 0);
if(pid < 0){
errno = pid;
return -1;
}
*child = pid;
return 0;
}
int sys_execve(const char *path, char *const argv[], char *const envp[]){
return -syscall(SYS_EXECVE, path, argv, envp);
}
int sys_getentropy(void *buffer, size_t length){
return -syscall(SYS_GETENTROPY, buffer, length);
}
#endif
}
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