feat: POSIX libc surface, native binutils (as/ld/ar run on MontaukOS)
Grow the Montauk libc enough to cross-build binutils 2.43.1 with --host=x86_64-montauk. gas, ld, ar, nm, objcopy, objdump, readelf, ranlib, strip and friends now link as native ET_EXEC Montauk binaries (staged stripped in toolchain/native/, not yet shipped in the image). New libc surface: full Linux errno and signal sets, O_* flags with real O_EXCL/O_APPEND semantics, unlink/rmdir/dup/dup2/getpid/_exit, kill (SYS_KILL), fcntl, fileno/fdopen, putc/getchar/rewind, ctime/asctime, strtoll/strtoull/atoll, bsearch, mkstemp/mktemp, realpath (lexical, drive-prefix aware), mbstowcs/mblen, chmod/fchmod/ umask/utime no-ops (VFS has no modes or settable times), full struct stat with fake inodes, sscanf field widths (bounded conversions), SCN*/PRI* completions, wait/waitpid over SYS_WAITPID, and new headers sys/wait.h, sys/param.h, utime.h, wchar.h, memory.h. fork/exec/pipe are declared but fail with ENOSYS: binutils never spawns, and real process plumbing is the posix_spawn milestone, which needs kernel support (exit status reporting, fd redirection). TCC's montauk_compat.h shims (unlink, chmod, execvp, realpath, fdopen, strtoll, strtoull) are retired in favor of the libc versions. Co-Authored-By: Claude Fable 5 <[email protected]>
This commit is contained in:
Claude Fable 5
@@ -9,18 +9,48 @@ extern "C" {
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extern int errno;
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#define ENOENT 2
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#define EIO 5
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#define ENOMEM 12
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#define EACCES 13
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#define EINVAL 22
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#define ERANGE 34
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#define ENOSYS 38
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#define EISDIR 21
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#define ENOTDIR 20
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#define EEXIST 17
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#define EBADF 9
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#define EPERM 1
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/* Linux errno numbering. */
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#define EPERM 1
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#define ENOENT 2
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#define ESRCH 3
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#define EINTR 4
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#define EIO 5
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#define ENXIO 6
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#define E2BIG 7
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#define ENOEXEC 8
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#define EBADF 9
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#define ECHILD 10
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#define EAGAIN 11
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#define ENOMEM 12
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#define EACCES 13
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#define EFAULT 14
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#define EBUSY 16
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#define EEXIST 17
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#define EXDEV 18
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#define ENODEV 19
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#define ENOTDIR 20
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#define EISDIR 21
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#define EINVAL 22
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#define ENFILE 23
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#define EMFILE 24
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#define ENOTTY 25
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#define EFBIG 27
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#define ENOSPC 28
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#define ESPIPE 29
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#define EROFS 30
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#define EMLINK 31
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#define EPIPE 32
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#define EDOM 33
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#define ERANGE 34
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#define EDEADLK 35
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#define ENAMETOOLONG 36
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#define ENOLCK 37
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#define ENOSYS 38
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#define ENOTEMPTY 39
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#define ELOOP 40
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#define EWOULDBLOCK EAGAIN
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#define EOVERFLOW 75
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#define ETIMEDOUT 110
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#ifdef __cplusplus
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}
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@@ -7,13 +7,27 @@
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extern "C" {
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#endif
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#define O_RDONLY 0
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#define O_WRONLY 1
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#define O_RDWR 2
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#define O_CREAT 0x40
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#define O_TRUNC 0x200
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#define O_RDONLY 0
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#define O_WRONLY 1
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#define O_RDWR 2
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#define O_ACCMODE 3
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#define O_CREAT 0x40
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#define O_EXCL 0x80
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#define O_TRUNC 0x200
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#define O_APPEND 0x400
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#define O_NONBLOCK 0x800
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#define O_CLOEXEC 0x80000
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#define F_DUPFD 0
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#define F_GETFD 1
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#define F_SETFD 2
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#define F_GETFL 3
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#define F_SETFL 4
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#define FD_CLOEXEC 1
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int open(const char *path, int flags, ...);
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int fcntl(int fd, int cmd, ...);
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#ifdef __cplusplus
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}
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@@ -23,5 +23,38 @@
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#define PRIX16 "X"
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#define PRIX32 "X"
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#define PRIX64 "lX"
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#define PRIo8 "o"
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#define PRIo16 "o"
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#define PRIo32 "o"
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#define PRIo64 "lo"
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#define PRIdPTR "ld"
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#define PRIiPTR "li"
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#define PRIuPTR "lu"
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#define PRIxPTR "lx"
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#define PRIXPTR "lX"
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#define PRIdMAX "ld"
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#define PRIuMAX "lu"
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#define PRIxMAX "lx"
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#define SCNd8 "d"
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#define SCNd16 "d"
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#define SCNd32 "d"
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#define SCNd64 "ld"
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#define SCNi8 "i"
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#define SCNi16 "i"
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#define SCNi32 "i"
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#define SCNi64 "li"
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#define SCNu8 "u"
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#define SCNu16 "u"
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#define SCNu32 "u"
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#define SCNu64 "lu"
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#define SCNx8 "x"
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#define SCNx16 "x"
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#define SCNx32 "x"
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#define SCNx64 "lx"
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#define SCNdPTR "ld"
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#define SCNuPTR "lu"
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#define SCNxPTR "lx"
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#endif /* _LIBC_INTTYPES_H */
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@@ -0,0 +1,9 @@
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#ifndef _LIBC_MEMORY_H
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#define _LIBC_MEMORY_H
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#pragma once
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/* Traditional alias for string.h. */
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#include <string.h>
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#endif /* _LIBC_MEMORY_H */
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@@ -3,6 +3,8 @@
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#pragma once
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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@@ -10,7 +12,26 @@ extern "C" {
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typedef int sig_atomic_t;
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typedef void (*sighandler_t)(int);
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#define SIGINT 2
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/* Linux signal numbering. Only SIGINT is ever delivered today; the
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rest exist so hosted code can name them. */
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#define SIGHUP 1
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#define SIGINT 2
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#define SIGQUIT 3
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#define SIGILL 4
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#define SIGTRAP 5
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#define SIGABRT 6
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#define SIGBUS 7
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#define SIGFPE 8
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#define SIGKILL 9
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#define SIGUSR1 10
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#define SIGSEGV 11
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#define SIGUSR2 12
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#define SIGPIPE 13
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#define SIGALRM 14
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#define SIGTERM 15
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#define SIGCHLD 17
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#define SIGCONT 18
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#define SIGSTOP 19
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#define SIG_DFL ((sighandler_t)0)
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#define SIG_IGN ((sighandler_t)1)
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@@ -18,6 +39,7 @@ typedef void (*sighandler_t)(int);
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sighandler_t signal(int sig, sighandler_t handler);
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int raise(int sig);
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int kill(pid_t pid, int sig);
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#ifdef __cplusplus
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}
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@@ -36,6 +36,12 @@ extern FILE *stdin;
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extern FILE *stdout;
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extern FILE *stderr;
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int putc(int c, FILE *stream);
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void rewind(FILE *stream);
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int getchar(void);
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int fileno(FILE *stream);
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FILE *fdopen(int fd, const char *mode);
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int printf(const char *fmt, ...);
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int fprintf(FILE *stream, const char *fmt, ...);
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int sprintf(char *str, const char *fmt, ...);
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@@ -49,10 +49,20 @@ int unsetenv(const char *name);
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int putenv(char *string);
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void qsort(void *base, size_t nmemb, size_t size,
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int (*compar)(const void *, const void *));
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int (*compar)(const void *, const void *));
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void *bsearch(const void *key, const void *base, size_t nmemb, size_t size,
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int (*compar)(const void *, const void *));
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long strtol(const char *nptr, char **endptr, int base);
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unsigned long strtoul(const char *nptr, char **endptr, int base);
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long long strtoll(const char *nptr, char **endptr, int base);
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unsigned long long strtoull(const char *nptr, char **endptr, int base);
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long long atoll(const char *nptr);
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int mkstemp(char *template_);
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char *mktemp(char *template_);
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char *realpath(const char *path, char *resolved);
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size_t mbstowcs(wchar_t *dst, const char *src, size_t n);
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int mblen(const char *s, size_t n);
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double strtod(const char *nptr, char **endptr);
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float strtof(const char *nptr, char **endptr);
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long double strtold(const char *nptr, char **endptr);
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@@ -0,0 +1,23 @@
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#ifndef _LIBC_SYS_PARAM_H
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#define _LIBC_SYS_PARAM_H
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#pragma once
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#include <limits.h>
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#include <sys/types.h>
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#ifndef MAXPATHLEN
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#define MAXPATHLEN 4096
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#endif
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#ifndef MIN
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#define MIN(a, b) (((a) < (b)) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a, b) (((a) > (b)) ? (a) : (b))
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#endif
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#define howmany(x, y) (((x) + ((y) - 1)) / (y))
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#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
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#endif /* _LIBC_SYS_PARAM_H */
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@@ -12,19 +12,54 @@ extern "C" {
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#define S_IFMT 0170000
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#define S_IFDIR 0040000
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#define S_IFREG 0100000
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#define S_IFCHR 0020000
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#define S_IFLNK 0120000
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#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
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#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
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#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
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#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
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#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
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#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
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#define S_ISFIFO(mode) (0)
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#define S_ISSOCK(mode) (0)
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#define S_ISBLK(mode) (0)
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/* Permission bits are accepted and preserved by the API for POSIX
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compatibility, but the Montauk VFS does not store them. */
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#define S_IRWXU 0700
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#define S_IRUSR 0400
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#define S_IWUSR 0200
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#define S_IXUSR 0100
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#define S_IRWXG 0070
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#define S_IRGRP 0040
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#define S_IWGRP 0020
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#define S_IXGRP 0010
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#define S_IRWXO 0007
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#define S_IROTH 0004
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#define S_IWOTH 0002
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#define S_IXOTH 0001
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struct stat {
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unsigned long st_dev;
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unsigned long st_ino;
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mode_t st_mode;
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unsigned long st_nlink;
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uid_t st_uid;
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gid_t st_gid;
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unsigned long st_size;
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unsigned long st_blksize;
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unsigned long st_blocks;
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time_t st_atime;
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time_t st_mtime;
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time_t st_ctime;
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};
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int mkdir(const char *path, unsigned int mode);
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int stat(const char *path, struct stat *buf);
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int fstat(int fd, struct stat *buf);
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int mkdir(const char *path, unsigned int mode);
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int stat(const char *path, struct stat *buf);
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int fstat(int fd, struct stat *buf);
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int lstat(const char *path, struct stat *buf);
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int chmod(const char *path, mode_t mode);
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int fchmod(int fd, mode_t mode);
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mode_t umask(mode_t mask);
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#ifdef __cplusplus
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}
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@@ -0,0 +1,31 @@
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#ifndef _LIBC_SYS_WAIT_H
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#define _LIBC_SYS_WAIT_H
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#pragma once
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Status decoding. The Montauk kernel does not yet report exit codes
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through SYS_WAITPID, so waited children always decode as exit 0. */
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#define WIFEXITED(s) (((s) & 0x7F) == 0)
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#define WEXITSTATUS(s) (((s) >> 8) & 0xFF)
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#define WIFSIGNALED(s) (0)
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#define WTERMSIG(s) (0)
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#define WIFSTOPPED(s) (0)
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#define WSTOPSIG(s) (0)
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#define WNOHANG 1
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#define WUNTRACED 2
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pid_t wait(int *status);
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pid_t waitpid(pid_t pid, int *status, int options);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIBC_SYS_WAIT_H */
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@@ -34,6 +34,9 @@ struct tm *localtime(const time_t *timer);
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time_t mktime(struct tm *tm);
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size_t strftime(char *s, size_t max, const char *format, const struct tm *tm);
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char *asctime(const struct tm *tm);
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char *ctime(const time_t *timep);
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#ifdef __cplusplus
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}
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#endif
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@@ -4,11 +4,16 @@
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#pragma once
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#include <stddef.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define STDIN_FILENO 0
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#define STDOUT_FILENO 1
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#define STDERR_FILENO 2
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#define F_OK 0
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#define X_OK 1
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#define W_OK 2
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@@ -22,6 +27,19 @@ int chdir(const char *path);
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char *getcwd(char *buf, size_t size);
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int access(const char *path, int mode);
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int isatty(int fd);
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int unlink(const char *path);
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int rmdir(const char *path);
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int dup(int fd);
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int dup2(int oldfd, int newfd);
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pid_t getpid(void);
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void _exit(int status) __attribute__((noreturn));
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pid_t fork(void);
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int execv(const char *path, char *const argv[]);
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int execve(const char *path, char *const argv[], char *const envp[]);
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int execvp(const char *file, char *const argv[]);
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int pipe(int fds[2]);
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extern char **environ;
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unsigned int sleep(unsigned int seconds);
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@@ -0,0 +1,25 @@
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#ifndef _LIBC_UTIME_H
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#define _LIBC_UTIME_H
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#pragma once
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct utimbuf {
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time_t actime;
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time_t modtime;
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};
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/* Accepted for POSIX compatibility; the Montauk VFS does not support
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setting file times. */
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int utime(const char *path, const struct utimbuf *times);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIBC_UTIME_H */
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@@ -0,0 +1,24 @@
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#ifndef _LIBC_WCHAR_H
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#define _LIBC_WCHAR_H
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#pragma once
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned int wint_t;
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#define WEOF ((wint_t)-1)
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/* Byte-oriented C locale only: one byte, one character. */
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size_t mbstowcs(wchar_t *dst, const char *src, size_t n);
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int mblen(const char *s, size_t n);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIBC_WCHAR_H */
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