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Add x86_64-linux-gnu emulator

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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
This commit is contained in:
Justine Tunney 2020-08-25 04:23:25 -07:00
parent 467504308a
commit f4f4caab0e
1052 changed files with 65667 additions and 7825 deletions
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23
libc/calls/internal.h
View file

@ -19,12 +19,14 @@
╚─────────────────────────────────────────────────────────────────────────────*/
#ifndef COSMOPOLITAN_LIBC_CALLS_INTERNAL_H_
#define COSMOPOLITAN_LIBC_CALLS_INTERNAL_H_
#ifndef __STRICT_ANSI__
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/limits.h"
#include "libc/macros.h"
#include "libc/nt/struct/securityattributes.h"
#include "libc/nt/struct/startupinfo.h"
#include "libc/nt/struct/systeminfo.h"
#include "libc/runtime/runtime.h"
#define kSigactionMinRva 8 /* >SIG_{ERR,DFL,IGN,...} */
@ -36,6 +38,7 @@ COSMOPOLITAN_C_START_
struct NtContext;
struct NtWin32FileAttributeData;
struct ZiposHandle;
struct __darwin_siginfo;
struct __darwin_ucontext;
struct itimerval;
@ -45,7 +48,7 @@ struct sigset;
struct sysinfo;
struct timeval;
struct timezone;
struct ZiposHandle;
struct utimbuf;
struct IoctlPtmGet {
int theduxfd;
@ -62,7 +65,8 @@ struct IoctlPtmGet {
* and helps us abstract peculiarities like close() vs. closesocket().
*/
struct Fds {
size_t f, n;
size_t f; // length
size_t n; // capacity
struct Fd {
int64_t handle;
int64_t extra;
@ -132,6 +136,7 @@ i32 __dup3$sysv(i32, i32, i32) hidden;
i32 __fstat$sysv(i32, struct stat *) hidden;
i32 __fstatat$sysv(i32, const char *, struct stat *, i32) hidden;
i32 __pipe2$sysv(i32[hasatleast 2], u32) hidden;
i32 __utimensat$sysv(i32, const char *, const struct timespec *, i32) hidden;
i32 chdir$sysv(const char *) hidden;
i32 clock_gettime$sysv(i32, struct timespec *) hidden;
i32 close$sysv(i32) hidden;
@ -154,6 +159,8 @@ i32 fstat$sysv(i32, struct stat *) hidden;
i32 fstatat$sysv(i32, const char *, struct stat *, i32) hidden;
i32 fsync$sysv(i32) hidden;
i32 ftruncate$sysv(i32, i64) hidden;
i32 futimes$sysv(i32, const struct timeval *) hidden;
i32 futimesat$sysv(i32, const char *, const struct timeval *) hidden;
i32 getdents(i32, char *, u32) hidden;
i32 getppid$sysv(void) hidden;
i32 getpriority$sysv(i32, u32) hidden;
@ -164,6 +171,7 @@ i32 ioctl$sysv(i32, u64, void *) hidden;
i32 kill$sysv(i32, i32, i32) hidden;
i32 linkat$sysv(i32, const char *, i32, const char *, i32) hidden;
i32 lseek$sysv(i32, i64, i32) hidden;
i32 lutimes$sysv(const char *, const struct timeval *) hidden;
i32 madvise$sysv(void *, size_t, i32) hidden;
i32 memfd_create$sysv(const char *, u32) hidden;
i32 mkdirat$sysv(i32, const char *, u32) hidden;
@ -194,6 +202,8 @@ i32 sysinfo$sysv(struct sysinfo *) hidden;
i32 truncate$sysv(const char *, u64) hidden;
i32 uname$sysv(char *) hidden;
i32 unlinkat$sysv(i32, const char *, i32) hidden;
i32 utime$sysv(const char *, const struct utimbuf *) hidden;
i32 utimensat$sysv(i32, const char *, const struct timespec *, i32) hidden;
i32 utimes$sysv(const char *, const struct timeval *) hidden;
i32 wait4$sysv(i32, i32 *, i32, struct rusage *) hidden;
i64 copy_file_range$sysv(i32, long *, i32, long *, u64, u32) hidden;
@ -207,12 +217,12 @@ i64 sendfile$sysv(i32, i32, i64 *, u64) hidden;
i64 splice$sysv(i32, i64 *, i32, i64 *, u64, u32) hidden;
i64 vmsplice$sysv(i32, const struct iovec *, i64, u32) hidden;
i64 write$sysv(i32, const void *, u64) hidden;
int setresgid$sysv(uint32_t, uint32_t, uint32_t) hidden;
int setresuid$sysv(uint32_t, uint32_t, uint32_t) hidden;
u32 getgid$sysv(void) hidden;
u32 getpid$sysv(void) hidden;
u32 gettid$sysv(void) hidden;
u32 getuid$sysv(void) hidden;
int setresuid$sysv(uint32_t, uint32_t, uint32_t) hidden;
int setresgid$sysv(uint32_t, uint32_t, uint32_t) hidden;
void *mmap$sysv(void *, u64, u32, u32, i64, i64) hidden;
void *mremap$sysv(void *, u64, u64, i32, void *) hidden;
@ -223,13 +233,13 @@ void *mremap$sysv(void *, u64, u64, i32, void *) hidden;
int __getpid(void) hidden;
void __onfork(void) hidden;
bool32 __sigenter(i32, struct siginfo *, struct ucontext *) hidden;
i32 __mprotect(void *, u64, i32) privileged;
i32 fixupnewfd$sysv(i32, i32) hidden;
i32 tunefd$sysv(i32, i32, i32, i32) hidden;
u32 fprot2nt(i32, i32) hidden;
u32 prot2nt(i32, i32) privileged;
void __restore_rt() hidden;
void __sigenter$xnu(void *, i32, i32, void *, void *) hidden noreturn;
int utimensat$xnu(int, const char *, const struct timespec *, int) hidden;
void stat2linux(void *) hidden;
void xnutrampoline(void *, i32, i32, const struct __darwin_siginfo *,
const struct __darwin_ucontext *) hidden noreturn;
@ -271,6 +281,8 @@ int wait4$nt(int, int *, int, struct rusage *) hidden;
i64 lseek$nt(int, i64, int) hidden;
ssize_t read$nt(struct Fd *, const struct iovec *, size_t, ssize_t) hidden;
ssize_t write$nt(struct Fd *, const struct iovec *, size_t, ssize_t) hidden;
int utimensat$nt(int, const char *, const struct timespec *, int) hidden;
int getrusage$nt(int, struct rusage *) hidden;
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § syscalls » windows nt » support ─╬─│┼
@ -317,4 +329,5 @@ int __mkntpath(const char *, unsigned, char16_t[hasatleast PATH_MAX - 16])
#undef u64
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* !ANSI */
#endif /* COSMOPOLITAN_LIBC_CALLS_INTERNAL_H_ */