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https://github.com/jart/cosmopolitan.git
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f4f4caab0e
I wanted a tiny scriptable meltdown proof way to run userspace programs and visualize how program execution impacts memory. It helps to explain how things like Actually Portable Executable works. It can show you how the GCC generated code is going about manipulating matrices and more. I didn't feel fully comfortable with Qemu and Bochs because I'm not smart enough to understand them. I wanted something like gVisor but with much stronger levels of assurances. I wanted a single binary that'll run, on all major operating systems with an embedded GPL barrier ZIP filesystem that is tiny enough to transpile to JavaScript and run in browsers too. https://justine.storage.googleapis.com/emulator625.mp4
292 lines
12 KiB
C
292 lines
12 KiB
C
#ifndef COSMOPOLITAN_LIBC_CALLS_SYSCALLS_H_
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#define COSMOPOLITAN_LIBC_CALLS_SYSCALLS_H_
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#include "libc/calls/struct/timespec.h"
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#include "libc/calls/typedef/sighandler_t.h"
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#include "libc/dce.h"
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#include "libc/fmt/pflink.h"
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#include "libc/sysv/consts/s.h"
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#include "libc/sysv/consts/sig.h"
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#define EOF -1 /* end of file */
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#define WEOF -1u /* end of file (multibyte) */
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#define _IOFBF 0 /* fully buffered */
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#define _IOLBF 1 /* line buffered */
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#define _IONBF 2 /* no buffering */
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#define SEEK_SET 0 /* relative to beginning */
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#define SEEK_CUR 1 /* relative to current position */
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#define SEEK_END 2 /* relative to end */
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#define SIG_ERR ((void (*)(int))(-1))
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#define SIG_DFL ((void *)0)
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#define SIG_IGN ((void *)1)
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#define MAP_FAILED ((void *)__SIZE_MAX__)
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#define ARCH_SET_GS 0x1001
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#define ARCH_SET_FS 0x1002
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#define ARCH_GET_FS 0x1003
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#define ARCH_GET_GS 0x1004
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#define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT)
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#define MAP_HUGE_1GB (30 << MAP_HUGE_SHIFT)
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#define S_ISDIR(mode) (((mode)&S_IFMT) == S_IFDIR)
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#define S_ISCHR(mode) (((mode)&S_IFMT) == S_IFCHR)
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#define S_ISBLK(mode) (((mode)&S_IFMT) == S_IFBLK)
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#define S_ISREG(mode) (((mode)&S_IFMT) == S_IFREG)
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#define S_ISFIFO(mode) (((mode)&S_IFMT) == S_IFIFO)
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#define S_ISLNK(mode) (((mode)&S_IFMT) == S_IFLNK)
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#define S_ISSOCK(mode) (((mode)&S_IFMT) == S_IFSOCK)
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#define WCOREDUMP(s) ((s)&0x80)
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#define WEXITSTATUS(s) (((s)&0xff00) >> 8)
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#define WIFCONTINUED(s) ((s) == 0xffff)
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#define WIFEXITED(s) (!WTERMSIG(s))
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#define WIFSIGNALED(s) (((s)&0xffff) - 1U < 0xffu)
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#define WIFSTOPPED(s) ((short)((((s)&0xffff) * 0x10001) >> 8) > 0x7f00)
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#define WSTOPSIG(s) WEXITSTATUS(s)
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#define WTERMSIG(s) ((s)&0x7f)
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § system calls ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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struct dirstream;
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struct iovec;
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struct rlimit;
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struct rusage;
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struct sigaction;
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struct siginfo;
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struct sigset;
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struct stat;
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struct sysinfo;
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struct tms;
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struct ucontext;
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struct utsname;
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typedef int sig_atomic_t;
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typedef struct dirstream DIR;
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extern const struct sigset kSigsetFull;
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extern const struct sigset kSigsetEmpty;
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DIR *fdopendir(int) nodiscard;
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DIR *opendir(const char *) nodiscard;
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bool fileexists(const char *);
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bool isdirectory(const char *);
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bool isexecutable(const char *);
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bool isregularfile(const char *);
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bool32 isatty(int) nosideeffect;
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bool32 ischardev(int) nosideeffect;
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char *get_current_dir_name(void) nodiscard;
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char *getcwd(char *, size_t);
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char *realpath(const char *, char *);
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char *replaceuser(const char *) nodiscard;
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char *slurp(const char *, size_t *) nodiscard;
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char *ttyname(int);
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const char *commandv(const char *);
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int access(const char *, int) nothrow;
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int arch_prctl();
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int chdir(const char *);
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int chmod(const char *, uint32_t);
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int chown(const char *, uint32_t, uint32_t);
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int close(int);
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int closedir(DIR *);
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int creat(const char *, uint32_t) nodiscard;
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int dirfd(DIR *);
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int dup(int) nodiscard;
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int dup2(int, int);
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int dup3(int, int, int);
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int execl(const char *, const char *, ...) nullterminated();
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int execle(const char *, const char *, ...) nullterminated((1));
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int execlp(const char *, const char *, ...) nullterminated();
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int execv(const char *, char *const[]) paramsnonnull();
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int execve(const char *, char *const[], char *const[]) paramsnonnull();
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int execvp(const char *, char *const[]) paramsnonnull();
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int execvpe(const char *, char *const[], char *const[]) paramsnonnull();
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int faccessat(int, const char *, int, uint32_t);
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int fadvise(int, uint64_t, uint64_t, int);
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int fallocate(int, int32_t, int64_t, int64_t);
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int fchmod(int, uint32_t) nothrow;
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int fchmodat(int, const char *, uint32_t, uint32_t);
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int fchown(int, uint32_t, uint32_t);
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int fchownat(int, const char *, uint32_t, uint32_t, uint32_t);
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int fcntl();
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int fdatasync(int);
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int filecmp(const char *, const char *);
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int flock(int, int);
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int fork(void);
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int fstat(int, struct stat *);
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int fstatat(int, const char *, struct stat *, uint32_t);
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int fsync(int);
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int ftruncate(int, int64_t);
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int getppid(void);
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int getpriority(int, unsigned);
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int getrlimit(int, struct rlimit *);
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int getrusage(int, struct rusage *);
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int kill(int, int);
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int killpg(int, int);
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int link(const char *, const char *) nothrow;
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int linkat(int, const char *, int, const char *, uint32_t);
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int lstat(const char *, struct stat *);
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int madvise(void *, uint64_t, int);
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int mkdir(const char *, uint32_t);
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int mkdirat(int, const char *, uint32_t);
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int mkfifo(const char *, uint32_t);
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int mknod(const char *, uint32_t, uint64_t);
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int mknodat(int, const char *, int32_t, uint64_t);
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int mlock(const void *, size_t);
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int mlock2(const void *, size_t, int);
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int mlockall(int);
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int mprotect(void *, uint64_t, int) privileged;
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int msync(void *, size_t, int);
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int munlock(const void *, size_t);
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int munlockall(void);
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int munmap(void *, uint64_t);
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int munmap_s(void *, uint64_t);
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int nice(int);
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int open(const char *, int, ...) nodiscard;
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int openanon(char *, unsigned) nodiscard;
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int openat(int, const char *, int, ...);
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int pause(void);
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int personality(uint64_t);
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int pipe(int[hasatleast 2]) nodiscard;
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int pipe2(int[hasatleast 2], int) nodiscard;
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int posix_fadvise(int, uint64_t, uint64_t, int);
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int posix_fallocate(int, int64_t, int64_t);
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int posix_madvise(void *, uint64_t, int);
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int raise(int);
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int readlink(const char *, char *, size_t);
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int remove(const char *);
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int rename(const char *, const char *);
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int renameat(int, const char *, int, const char *);
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int renameat2(long, const char *, long, const char *, int);
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int rmdir(const char *);
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int sched_getaffinity(int, uint64_t, void *);
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int sched_setaffinity(int, uint64_t, const void *);
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int sched_yield(void);
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int setpgid(int, int);
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int setpriority(int, unsigned, int);
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int setrlimit(int, const struct rlimit *);
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int setsid(void);
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int setuid(uint32_t);
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int setgid(uint32_t);
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int seteuid(uint32_t);
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int setegid(uint32_t);
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int setreuid(uint32_t, uint32_t);
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int setregid(uint32_t, uint32_t);
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int setresuid(uint32_t, uint32_t, uint32_t);
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int setresgid(uint32_t, uint32_t, uint32_t);
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int sigaction(int, const struct sigaction *, struct sigaction *);
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int sigignore(int);
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int sigprocmask(int, const struct sigset *, struct sigset *);
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int sigsuspend(const struct sigset *);
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int stat(const char *, struct stat *);
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int symlink(const char *, const char *);
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int symlinkat(const char *, int, const char *);
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int sync_file_range(int, int64_t, int64_t, unsigned);
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int sysinfo(struct sysinfo *) paramsnonnull();
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int touch(const char *, uint32_t);
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int truncate(const char *, uint64_t);
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int ttyname_r(int, char *, size_t);
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int uname(struct utsname *);
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int unlink(const char *);
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int unlink_s(const char **);
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int unlinkat(int, const char *, int);
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int vfork(void);
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int wait(int *);
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int wait3(int *, int, struct rusage *);
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int wait4(int, int *, int, struct rusage *);
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int waitpid(int, int *, int);
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int64_t lseek(int, int64_t, int);
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int64_t pread(int, void *, size_t, int64_t);
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int64_t preadv(int, struct iovec *, int, int64_t);
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int64_t pwrite(int, const void *, size_t, int64_t);
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int64_t pwritev(int, const struct iovec *, int, int64_t);
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int64_t syscall();
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long telldir(DIR *);
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int getpid(void);
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long times(struct tms *);
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sighandler_t signal(int, sighandler_t);
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size_t GetFileSize(const char *);
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size_t getfiledescriptorsize(int);
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ssize_t copy_file_range(int, long *, int, long *, size_t, uint32_t);
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ssize_t copyfd(int, int64_t *, int, int64_t *, size_t, uint32_t);
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ssize_t read(int, void *, size_t);
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ssize_t readlinkat(int, const char *, char *, size_t);
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ssize_t splice(int, int64_t *, int, int64_t *, size_t, uint32_t);
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ssize_t vmsplice(int, const struct iovec *, int64_t, uint32_t);
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ssize_t write(int, const void *, size_t);
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struct dirent *readdir(DIR *);
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uint32_t getegid(void) nosideeffect;
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uint32_t geteuid(void) nosideeffect;
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uint32_t getgid(void) nosideeffect;
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uint32_t getpgrp(void) nosideeffect;
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uint32_t getsid(int) nosideeffect;
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uint32_t gettid(void) nosideeffect;
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uint32_t getuid(void) nosideeffect;
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uint32_t umask(int32_t);
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void *getprocaddressmodule(const char *, const char *);
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void *mmap(void *, uint64_t, int32_t, int32_t, int32_t, int64_t);
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void *mremap(void *, uint64_t, uint64_t, int32_t, void *);
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#define getcwd(BUF, SIZE) \
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(isconstant(BUF) && (&(BUF)[0] == NULL) ? get_current_dir_name() \
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: getcwd(BUF, SIZE))
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § system calls » formatting ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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int dprintf(int, const char *, ...) printfesque(2) paramsnonnull((2));
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int vdprintf(int, const char *, va_list) paramsnonnull();
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § system calls » link-time optimizations ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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void _init_onntconsoleevent(void);
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void _init_onwincrash(void);
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#define __SIGACTION(FN, SIG, ...) \
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({ \
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if (SupportsWindows()) { \
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if (isconstant(SIG)) { \
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switch (SIG) { \
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case SIGINT: \
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case SIGQUIT: \
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case SIGHUP: \
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case SIGTERM: \
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YOINK(_init_onntconsoleevent); \
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break; \
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case SIGTRAP: \
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case SIGILL: \
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case SIGSEGV: \
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case SIGABRT: \
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case SIGFPE: \
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YOINK(_init_onwincrash); \
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break; \
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default: \
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break; \
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} \
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} else { \
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YOINK(_init_onntconsoleevent); \
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YOINK(_init_onwincrash); \
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} \
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} \
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(FN)(SIG, __VA_ARGS__); \
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})
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#define dprintf(FD, FMT, ...) (dprintf)(FD, PFLINK(FMT), ##__VA_ARGS__)
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#define sigaction(SIG, ACT, OLD) __SIGACTION(sigaction, SIG, ACT, OLD)
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#define signal(SIG, HAND) __SIGACTION(signal, SIG, HAND)
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#define vdprintf(FD, FMT, VA) (vdprintf)(FD, PFLINK(FMT), VA)
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#endif /* GNU && !ANSI */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_CALLS_SYSCALLS_H_ */
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