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/*
* libcucul Canvas for ultrafast compositing of Unicode letters
* libcaca Colour ASCII-Art library
* Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
* All Rights Reserved
*
* $Id: kernel.h 1077 2006-11-16 11:23:56Z sam $
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Do What The Fuck You Want To
* Public License, Version 2, as published by Sam Hocevar. See
* http://sam.zoy.org/wtfpl/COPYING for more details.
*/
/*
* This file contains replacement functions for the standard C library
* that must be used when building libcucul and libcaca into a kernel.
*/
/* Various defines */
#define NULL ((void *)0)
#define BUFSIZ 4096
#define RAND_MAX ((unsigned int)0x8000000)
#define INT_MAX ((int)0x7fffffff)
#define M_PI 3.14159265358979323846
#define __BYTE_ORDER 1
#define __BIG_ENDIAN 2
/* Assembly code for outb and inb */
extern inline void outb(unsigned char val, unsigned short port);
extern inline unsigned char inb(unsigned short port);
extern inline void outb(unsigned char val, unsigned short port)
{
__asm__ __volatile__ ("outb %b0,%w1" : : "a" (val), "Nd" (port));
}
extern inline unsigned char inb(unsigned short port)
{
unsigned char tmp;
__asm__ __volatile__ ("inb %w1,%0" : "=a" (tmp) : "Nd" (port));
return tmp;
}
/* Various typedefs -- some are x86-specific */
#define CUSTOM_INTTYPES
typedef unsigned int size_t;
typedef struct file
{
void *mem;
} FILE;
struct timeval {
int tv_sec;
int tv_usec;
};
struct timezone {
int tz_minuteswest;
int tz_dsttime;
};
/* Multiboot kernel entry point */
void cmain(unsigned long int magic, unsigned long int addr);
/* The application's entry point */
int main(int argc, char *argv[]);
/* stdlib.h functions */
void *malloc(size_t size);
void free(void *ptr);
void *realloc(void *ptr, size_t size);
char *getenv(const char *name);
int rand(void);
int abs(int j);
void exit(int status);
void srand(unsigned int s);
FILE *stdin, *stdout, *stderr;
/* string.h functions */
void *memset(void *s, int c, size_t n);
void *memcpy(void *dest, const void *src, size_t n);
size_t strlen(const char *s);
int strcmp(const char *s1, const char *s2);
int strcasecmp(const char *s1, const char *s2);
int memcmp(const void *s1, const void *s2, size_t n);
char *strdup(const char *s);
/* stdarg.h functions */
typedef void * va_list;
#define va_start(v,a) v = (void *)((uintptr_t)(&a) + sizeof(a))
#define va_end(v)
int vsnprintf(char *str, size_t size, const char *format, va_list ap);
/* stdio.h functions */
FILE *fopen(const char *path, const char *mode);
int feof(FILE *stream);
char *fgets(char *s, int size, FILE *stream);
size_t fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
int fclose(FILE *fp);
int printf(const char *format, ...);
int fprintf(FILE *stream, const char *format, ...);
int fflush(FILE *stream);
int sprintf(char *str, const char *format, ...);
int sscanf(const char *str, const char *format, ...);
/* unistd.h functions */
void usleep(unsigned long usec);
int getpid(void);
/* time.h functions */
int gettimeofday(struct timeval *tv, struct timezone *tz);
int time(void *);
/* math.h functions */
double cos(double x);
double sin(double x);
double sqrt(double x);
/* errno.h functions */
#define ENOENT 2 /* No such file or directory */
#define ENOMEM 12 /* Out of memory */
#define EBUSY 16 /* Device or resource busy */
#define ENODEV 19 /* No such device */
#define EINVAL 22 /* Invalid argument */
#define ENOTTY 25 /* Not a typewriter */
#define ENOSYS 38 /* Function not implemented */
extern int errno;
/* arpa/inet.h functions */
unsigned int htonl(unsigned int hostlong);
unsigned short htons(unsigned short hostlong);
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