feat: Intel GPU fixes, add tcc compiler, spreadsheet improvements, paint app, file manager improvements

2026-03-21 17:35:16 +01:00
parent 2fd9b7d027
commit 770dde5001
72 changed files with 45499 additions and 305 deletions
@@ -0,0 +1,221 @@
+/*
+    * montauk_compat.h
+    * POSIX compatibility shims for TCC on MontaukOS
+    * Copyright (c) 2026 Daniel Hammer
+*/
+
+#ifndef MONTAUK_COMPAT_H
+#define MONTAUK_COMPAT_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+/* ====================================================================
+   setjmp / longjmp (implemented in setjmp.S)
+   ==================================================================== */
+
+typedef unsigned long jmp_buf[8]; /* rbx, rbp, r12-r15, rsp, rip */
+
+int setjmp(jmp_buf env);
+void longjmp(jmp_buf env, int val) __attribute__((noreturn));
+
+/* ====================================================================
+   time stubs (for __DATE__ / __TIME__ macros)
+   ==================================================================== */
+
+typedef long time_t;
+
+struct tm {
+    int tm_sec;
+    int tm_min;
+    int tm_hour;
+    int tm_mday;
+    int tm_mon;
+    int tm_year;
+    int tm_wday;
+    int tm_yday;
+    int tm_isdst;
+};
+
+static inline time_t time(time_t *t) {
+    if (t) *t = 0;
+    return 0;
+}
+
+static inline struct tm *localtime(const time_t *t) {
+    static struct tm tm0 = {
+        .tm_sec = 0, .tm_min = 0, .tm_hour = 12,
+        .tm_mday = 1, .tm_mon = 0, .tm_year = 126, /* 2026 */
+        .tm_wday = 4, .tm_yday = 0, .tm_isdst = 0
+    };
+    (void)t;
+    return &tm0;
+}
+
+/* ====================================================================
+   gettimeofday stub (for timing in tcc.c)
+   ==================================================================== */
+
+struct timeval {
+    long tv_sec;
+    long tv_usec;
+};
+
+struct timezone {
+    int tz_minuteswest;
+    int tz_dsttime;
+};
+
+static inline int gettimeofday(struct timeval *tv, struct timezone *tz) {
+    if (tv) { tv->tv_sec = 0; tv->tv_usec = 0; }
+    (void)tz;
+    return 0;
+}
+
+/* ====================================================================
+   getcwd stub (for debug info)
+   ==================================================================== */
+
+static inline char *getcwd(char *buf, size_t size) {
+    if (buf && size > 4) {
+        buf[0] = '0';
+        buf[1] = ':';
+        buf[2] = '/';
+        buf[3] = '\0';
+    }
+    return buf;
+}
+
+/* ====================================================================
+   POSIX file access stubs
+   ==================================================================== */
+
+#define R_OK 4
+#define W_OK 2
+#define X_OK 1
+#define F_OK 0
+
+/* Check if file exists by trying to open it */
+int access(const char *path, int mode);
+
+/* chmod - no-op on MontaukOS */
+static inline int chmod(const char *path, unsigned int mode) {
+    (void)path; (void)mode;
+    return 0;
+}
+
+/* close (provided by libc) */
+int close(int fd);
+
+/* lseek - provided by libc, tracks fd positions */
+long lseek(int fd, long offset, int whence);
+
+/* realpath - just return a copy of the path */
+static inline char *realpath(const char *path, char *resolved) {
+    if (path == NULL) return NULL;
+    if (resolved == NULL) {
+        size_t len = 0;
+        const char *p = path;
+        while (*p++) len++;
+        resolved = (char*)malloc(len + 1);
+        if (!resolved) return NULL;
+    }
+    {
+        const char *s = path;
+        char *d = resolved;
+        while ((*d++ = *s++));
+    }
+    return resolved;
+}
+
+/* ====================================================================
+   strtof / strtold stubs
+   ==================================================================== */
+
+/* These are declared extern in tcc.h for non-Win32.
+   We provide no-op stubs since the libc has no FP parse. */
+static inline float strtof(const char *nptr, char **endptr) {
+    (void)nptr;
+    if (endptr) *endptr = (char*)nptr;
+    return 0.0f;
+}
+
+static inline long double strtold(const char *nptr, char **endptr) {
+    (void)nptr;
+    if (endptr) *endptr = (char*)nptr;
+    return 0.0L;
+}
+
+/* dlfcn stubs not needed -- TCC_IS_NATIVE is disabled for MontaukOS */
+
+/* ====================================================================
+   ssize_t (used in tccelf.c)
+   ==================================================================== */
+
+#ifndef _SSIZE_T_DEFINED
+#define _SSIZE_T_DEFINED
+typedef long ssize_t;
+#endif
+
+/* ====================================================================
+   POSIX I/O (provided by libc)
+   ==================================================================== */
+
+int read(int fd, void *buf, size_t count);
+int write(int fd, const void *buf, size_t count);
+
+/* unlink = remove */
+static inline int unlink(const char *path) {
+    return remove(path);
+}
+
+/* fputc (should be in libc but isn't yet) */
+static inline int fputc(int c, FILE *stream) {
+    unsigned char ch = (unsigned char)c;
+    size_t n = fwrite(&ch, 1, 1, stream);
+    return n == 1 ? c : -1;
+}
+
+/* fdopen - MontaukOS doesn't have fd-to-FILE conversion.
+   TCC uses fdopen after creating a file with open().
+   We return NULL and let TCC fall back to error path,
+   or we can use a workaround. */
+FILE *fdopen(int fd, const char *mode);
+
+/* strerror */
+static inline const char *strerror(int errnum) {
+    (void)errnum;
+    return "error";
+}
+
+/* ====================================================================
+   String functions missing from MontaukOS libc
+   ==================================================================== */
+
+static inline char *strpbrk(const char *s, const char *accept) {
+    for (; *s; s++) {
+        for (const char *a = accept; *a; a++) {
+            if (*s == *a) return (char *)s;
+        }
+    }
+    return NULL;
+}
+
+/* ====================================================================
+   Process stubs
+   ==================================================================== */
+
+static inline int execvp(const char *file, char *const argv[]) {
+    (void)file; (void)argv;
+    return -1;
+}
+
+/* ====================================================================
+   Floating-point parsing and math
+   ==================================================================== */
+
+double strtod(const char *nptr, char **endptr);
+double ldexp(double x, int n);
+long double ldexpl(long double x, int n);
+
+#endif /* MONTAUK_COMPAT_H */