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#include <bits/ensure.h>
#include <mlibc/debug.hpp>
#include <mlibc/all-sysdeps.hpp>
#include <mlibc/thread-entry.hpp>
#include <errno.h>
#include <dirent.h>
#include <fcntl.h>
#include <limits.h>
namespace mlibc {
void sys_libc_log(const char *message) {
unsigned long res;
asm volatile ("syscall" : "=a"(res)
: "a"(50), "D"(message)
: "rcx", "r11", "rdx");
}
void sys_libc_panic() {
mlibc::infoLogger() << "\e[31mmlibc: panic!" << frg::endlog;
asm volatile ("syscall" :
: "a"(12), "D"(1)
: "rcx", "r11", "rdx");
}
int sys_tcb_set(void *pointer) {
int res;
asm volatile ("syscall" : "=a"(res)
: "a"(300), "D"(pointer)
: "rcx", "r11", "rdx");
return res;
}
int sys_anon_allocate(size_t size, void **pointer) {
void *ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(9), "D"(0), "S"(size)
: "rcx", "r11");
if (!ret)
return sys_errno;
*pointer = ret;
return 0;
}
int sys_anon_free(void *pointer, size_t size) {
int unused_return;
int sys_errno;
asm volatile ("syscall"
: "=a"(unused_return), "=d"(sys_errno)
: "a"(11), "D"(pointer), "S"(size)
: "rcx", "r11");
if (unused_return)
return sys_errno;
return 0;
}
#ifndef MLIBC_BUILDING_RTDL
void sys_exit(int status) {
asm volatile ("syscall" :
: "a"(12), "D"(status)
: "rcx", "r11", "rdx");
}
#endif
#ifndef MLIBC_BUILDING_RTDL
int sys_clock_get(int clock, time_t *secs, long *nanos) {
return 0;
}
#endif
int sys_open(const char *path, int flags, mode_t mode, int *fd) {
int ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(2), "D"(path), "S"(flags), "d"(0)
: "rcx", "r11");
if (ret == -1)
return sys_errno;
*fd = ret;
return 0;
}
int sys_close(int fd) {
int ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(3), "D"(fd)
: "rcx", "r11");
if (ret == -1)
return sys_errno;
return 0;
}
int sys_read(int fd, void *buf, size_t count, ssize_t *bytes_read) {
ssize_t ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(0), "D"(fd), "S"(buf), "d"(count)
: "rcx", "r11");
if (ret == -1)
return sys_errno;
*bytes_read = ret;
return 0;
}
#ifndef MLIBC_BUILDING_RTDL
int sys_write(int fd, const void *buf, size_t count, ssize_t *bytes_written) {
ssize_t ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(1), "D"(fd), "S"(buf), "d"(count)
: "rcx", "r11");
if (ret == -1)
return sys_errno;
*bytes_written = ret;
return 0;
}
#endif
int sys_seek(int fd, off_t offset, int whence, off_t *new_offset) {
off_t ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(8), "D"(fd), "S"(offset), "d"(whence)
: "rcx", "r11");
if (ret == -1)
return sys_errno;
*new_offset = ret;
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);
void *ret;
int sys_errno;
// mlibc::infoLogger() << "calling sys_vm_map with size: " << size << frg::endlog;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(9), "D"(hint), "S"(size)
: "rcx", "r11");
if (!ret)
return sys_errno;
*window = ret;
return 0;
}
int sys_vm_unmap(void *pointer, size_t size) {
return sys_anon_free(pointer, size);
}
int sys_futex_wait(int *pointer, int expected, const struct timespec *time) {
uint64_t err;
asm volatile ("syscall"
: "=d"(err)
: "a"(66), "D"(pointer), "S"(expected)
: "rcx", "r11");
if (err) {
return -1;
}
return 0;
}
int sys_futex_wake(int *pointer) {
uint64_t err;
asm volatile ("syscall"
: "=d"(err)
: "a"(65), "D"(pointer)
: "rcx", "r11");
if (err) {
return -1;
}
return 0;
}
// All remaining functions are disabled in ldso.
#ifndef MLIBC_BUILDING_RTDL
int sys_clone(void *tcb, pid_t *tid_out, void *stack) {
int tid;
asm volatile ("syscall"
: "=a"(tid)
: "a"(67), "D"(__mlibc_start_thread), "S"(stack), "d"(tcb)
: "rcx", "r11");
if (tid_out)
*tid_out = tid;
return 0;
}
void sys_thread_exit() {
asm volatile ("syscall"
:
: "a"(68)
: "rcx", "r11");
__builtin_trap();
}
int sys_sleep(time_t *secs, long *nanos) {
long ms = (*nanos / 1000000) + (*secs * 1000);
asm volatile ("syscall"
:
: "a"(6), "D"(ms)
: "rcx", "r11");
*secs = 0;
*nanos = 0;
return 0;
}
int sys_fork(pid_t *child) {
pid_t ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(57)
: "rcx", "r11");
if (ret == -1)
return sys_errno;
*child = ret;
return 0;
}
int sys_execve(const char *path, char *const argv[], char *const envp[]) {
int ret;
int sys_errno;
asm volatile ("syscall"
: "=a"(ret), "=d"(sys_errno)
: "a"(59), "D"(path), "S"(argv), "d"(envp)
: "rcx", "r11");
if (sys_errno != 0)
return sys_errno;
return 0;
}
pid_t sys_getpid() {
pid_t pid;
asm volatile ("syscall" : "=a"(pid)
: "a"(5)
: "rcx", "r11", "rdx");
return pid;
}
pid_t sys_getppid() {
pid_t ppid;
asm volatile ("syscall" : "=a"(ppid)
: "a"(14)
: "rcx", "r11", "rdx");
return ppid;
}
#endif // MLIBC_BUILDING_RTDL
} // namespace mlibc
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