Add some libc function

ulib/c_libax/include/ctype.h

@@ -0,0 +1,20 @@
+#ifndef _CTYPE_H
+#define _CTYPE_H
+
+int tolower(int __c);
+int toupper(int __c);
+
+int isprint(int);
+int isalpha(int c);
+int isalnum(int);
+int isupper(int c);
+int islower(int c);
+
+int isxdigit(int);
+int isgraph(int);
+int iscntrl(int);
+int ispunct(int);
+
+int isascii(int);
+
+#endif

ulib/c_libax/include/limits.h

@@ -0,0 +1,34 @@
+#ifndef __LIMITS__
+#define __LIMITS__
+
+#define __LONG_MAX 0x7fffffffffffffffL
+#define CHAR_BIT   8
+#define SCHAR_MIN  (-128)
+#define SCHAR_MAX  127
+#define UCHAR_MAX  255
+#define SHRT_MIN   (-1 - 0x7fff)
+#define SHRT_MAX   0x7fff
+#define USHRT_MAX  0xffff
+#define INT_MIN    (-1 - 0x7fffffff)
+#define INT_MAX    0x7fffffff
+#define UINT_MAX   0xffffffffU
+#define LONG_MIN   (-LONG_MAX - 1)
+#define LONG_MAX   __LONG_MAX
+#define ULONG_MAX  (2UL * LONG_MAX + 1)
+#define LLONG_MIN  (-LLONG_MAX - 1)
+#define LLONG_MAX  0x7fffffffffffffffLL
+#define ULLONG_MAX (2ULL * LLONG_MAX + 1)
+
+#define PTHREAD_STACK_MIN 2048
+
+#define LOGIN_NAME_MAX 256
+#ifndef NAME_MAX
+#define NAME_MAX 255
+#endif
+#define TZNAME_MAX 6
+
+#define PATH_MAX  4096
+#define SSIZE_MAX LONG_MAX
+#define CHAR_MAX  127
+
+#endif

ulib/c_libax/include/locale.h

@@ -0,0 +1,56 @@
+#ifndef _LOCALE_H
+#define _LOCALE_H
+
+#define LC_CTYPE        0
+#define LC_NUMERIC      1
+#define LC_TIME         2
+#define LC_COLLATE      3
+#define LC_MONETARY     4
+#define LC_MESSAGES     5
+#define LC_ALL          6
+#define LOCALE_NAME_MAX 23
+
+#include <stddef.h>
+
+struct lconv {
+    char *decimal_point;
+    char *thousands_sep;
+    char *grouping;
+
+    char *int_curr_symbol;
+    char *currency_symbol;
+    char *mon_decimal_point;
+    char *mon_thousands_sep;
+    char *mon_grouping;
+    char *positive_sign;
+    char *negative_sign;
+    char int_frac_digits;
+    char frac_digits;
+    char p_cs_precedes;
+    char p_sep_by_space;
+    char n_cs_precedes;
+    char n_sep_by_space;
+    char p_sign_posn;
+    char n_sign_posn;
+    char int_p_cs_precedes;
+    char int_p_sep_by_space;
+    char int_n_cs_precedes;
+    char int_n_sep_by_space;
+    char int_p_sign_posn;
+    char int_n_sign_posn;
+};
+
+struct __locale_map {
+    const void *map;
+    size_t map_size;
+    char name[LOCALE_NAME_MAX + 1];
+    const struct __locale_map *next;
+};
+
+struct __locale_struct {
+    const struct __locale_map *cat[6];
+};
+
+typedef struct __locale_struct *locale_t;
+
+#endif

ulib/c_libax/include/stdbool.h

@@ -3,9 +3,9 @@
 
 /* Represents true-or-false values */
 #ifndef __cplusplus
-#define true  1
+#define true 1
 #define false 0
-#define bool  _Bool
+#define bool _Bool
 #endif
 
 #endif // __STDBOOL_H__

ulib/c_libax/include/stddef.h

@@ -2,12 +2,15 @@
 #define __STDDEF_H__
 
 #include <stdint.h>
+#include <sys/types.h>
 
 /* size_t is used for memory object sizes */
 typedef uintptr_t size_t;
 typedef intptr_t ssize_t;
 typedef ssize_t ptrdiff_t;
 
+typedef int clockid_t;
+
 #ifdef __cplusplus
 #define NULL 0L
 #else

ulib/c_libax/include/stdio.h

@@ -1,34 +1,59 @@
 #ifndef __STDIO_H__
 #define __STDIO_H__
 
-#define stdin  0
-#define stdout 1
-#define stderr 2
+#include <stdarg.h>
+#include <stddef.h>
 
-int getchar();
-int putchar(int);
-int puts(const char *s);
-void fprintf(int f, const char *fmt, ...);
-int fflush(int);
+// TODO: complete this struct
+struct IO_FILE {
+    int fd;
+};
+
+typedef struct IO_FILE FILE;
+
+extern FILE *const stdin;
+extern FILE *const stdout;
+extern FILE *const stderr;
+
+#define stdin  (stdin)
+#define stdout (stdout)
+#define stderr (stderr)
 
 #define EOF (-1)
 
-#define printf(...) fprintf(stdout, __VA_ARGS__)
+#define printf(...) fprintf(stdout->fd, __VA_ARGS__)
 
 #define unimplemented(fmt, ...)                                                                \
     printf("\x1b[33m%s%s:\x1b[0m " fmt "\n", "WARN: no ax_call implementation for ", __func__, \
            ##__VA_ARGS__)
 
-struct _IO_FILE {
-    int fd;
-};
-
-typedef struct _IO_FILE FILE;
-
 #define SEEK_SET 0
 #define SEEK_CUR 1
 #define SEEK_END 2
 
+#define F_EOF  16
+#define F_ERR  32
+#define F_SVB  64
+#define F_NORD 4
+#define UNGET  8
+
 #define FILENAME_MAX 4096
 
+int getchar();
+int putchar(int);
+int puts(const char *s);
+void fprintf(int f, const char *fmt, ...);
+
+#if defined(AX_CONFIG_ALLOC) && defined(AX_CONFIG_FS)
+FILE *fopen(const char *filename, const char *mode);
+#endif
+
+int fflush(FILE *);
+
+int vsnprintf(char *__restrict, size_t, const char *__restrict, va_list);
+int snprintf(char *__restrict, size_t, const char *__restrict, ...);
+int vsprintf(char *__restrict, const char *__restrict, va_list);
+int vfprintf(FILE *__restrict, const char *__restrict, va_list);
+int sprintf(char *__restrict, const char *__restrict, ...);
+
 #endif // __STDIO_H__

ulib/c_libax/include/stdlib.h

@@ -9,9 +9,23 @@ void srand(unsigned);
 #ifdef AX_CONFIG_ALLOC
 void *malloc(size_t size);
 void free(void *addr);
+void *calloc(size_t nmemb, size_t size);
+void *realloc(void *memblock, size_t size);
 #endif
 
 _Noreturn void abort(void);
 char *getenv(const char *name);
 
+long strtol(const char *__restrict, char **__restrict, int);
+unsigned long strtoul(const char *nptr, char **endptr, int base);
+long long strtoll(const char *nptr, char **endptr, int base);
+unsigned long long strtoull(const char *nptr, char **endptr, int base);
+
+long long atoll(const char *nptr);
+
+void exit(int);
+
+long long llabs(long long x);
+int abs(int x);
+
 #endif //__STDLIB_H__

ulib/c_libax/include/sys/time.h

@@ -15,6 +15,8 @@ struct timespec {
     long tv_nsec;  /* nanoseconds */
 };
 
+typedef struct timespec timespec;
+
 struct timezone {
     int tz_minuteswest; /* (minutes west of Greenwich) */
     int tz_dsttime;     /* (type of DST correction) */

ulib/c_libax/include/time.h

@@ -2,9 +2,16 @@
 #define __TIME_H__
 
 #include <stddef.h>
+#include <sys/time.h>
 
 typedef long time_t;
 
+#define CLOCK_REALTIME  0
+#define CLOCK_MONOTONIC 1
+#define CLOCKS_PER_SEC  1000000L
+
+#define ax_time_usec_to_nsec(usec) ((usec)*1000UL)
+
 struct tm {
     int tm_sec;   /* seconds of minute */
     int tm_min;   /* minutes of hour */
@@ -26,5 +33,7 @@ struct tm *gmtime(const time_t *timer);
 
 struct tm *localtime(const time_t *timep);
 time_t time(time_t *t);
+int clock_gettime(clockid_t _clk, struct timespec *ts);
+int nanosleep(const struct timespec *requested_time, struct timespec *remaining);
 
 #endif

ulib/c_libax/include/unistd.h

@@ -3,7 +3,6 @@
 
 #include <stddef.h>
 #include <sys/stat.h>
-#include <sys/types.h>
 
 #define _SC_PAGESIZE 30
 
@@ -27,6 +26,7 @@ char *getcwd(char *buf, size_t size);
 #endif
 
 unsigned sleep(unsigned seconds);
+int usleep(unsigned int useconds);
 
 uid_t geteuid(void);
 pid_t getpid(void);

ulib/c_libax/src/assert.c

@@ -3,6 +3,6 @@
 
 _Noreturn void __assert_fail(const char *expr, const char *file, int line, const char *func)
 {
-    fprintf(stderr, "Assertion failed: %s (%s: %s: %d)\n", expr, file, func, line);
+    fprintf(stderr->fd, "Assertion failed: %s (%s: %s: %d)\n", expr, file, func, line);
     abort();
 }

ulib/c_libax/src/ctype.c

@@ -0,0 +1,67 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+int isupper(int c)
+{
+    return (unsigned)c - 'A' < 26;
+}
+
+int tolower(int c)
+{
+    if (isupper(c))
+        return c | 32;
+    return c;
+}
+
+int islower(int c)
+{
+    return (unsigned)c - 'a' < 26;
+}
+
+int toupper(int c)
+{
+    if (islower(c))
+        return c & 0x5f;
+    return c;
+}
+
+int isgraph(int c)
+{
+    return (unsigned)c - 0x21 < 0x5e;
+}
+
+int isalpha(int c)
+{
+    return ((unsigned)c | 32) - 'a' < 26;
+}
+
+int isprint(int c)
+{
+    return (unsigned)c - 0x20 < 0x5f;
+}
+
+int isalnum(int c)
+{
+    return isalpha(c) || isdigit(c);
+}
+
+int iscntrl(int c)
+{
+    return (unsigned)c < 0x20 || c == 0x7f;
+}
+
+int ispunct(int c)
+{
+    return isgraph(c) && !isalnum(c);
+}
+
+int isxdigit(int c)
+{
+    return isdigit(c) || ((unsigned)c | 32) - 'a' < 6;
+}
+
+int isascii(int c)
+{
+    return !(c & ~0x7f);
+}

ulib/c_libax/src/mmap.c

@@ -1,6 +1,5 @@
 #include <stddef.h>
 #include <stdio.h>
-#include <sys/types.h>
 
 // TODO:
 void *mmap(void *addr, size_t len, int prot, int flags, int fildes, off_t off)