libc.h

Commit: 347e967b Author: jokerz Raw Copy

/* libc.h - Minimal libc for Pactor64 userspace programs */

#ifndef _LIBC_H

#define _LIBC_H

/* Basic types for freestanding userspace */

typedef unsigned char       uint8_t;

typedef unsigned short      uint16_t;

typedef unsigned int        uint32_t;

typedef unsigned long       uint64_t;

typedef signed char         int8_t;

typedef signed short        int16_t;

typedef signed int          int32_t;

typedef signed long         int64_t;

typedef uint64_t size_t;

typedef int64_t  ssize_t;

#define NULL ((void *)0)

/* GCC built-in va_list for variadic functions */

typedef __builtin_va_list va_list;

#define va_start(v,l) __builtin_va_start(v,l)

#define va_end(v)     __builtin_va_end(v)

#define va_arg(v,t)   __builtin_va_arg(v,t)

/* === System call wrappers === */

/* write(fd, buf, count) */

long write(int fd, const void *buf, unsigned long count);

/* read(fd, buf, count) */

long read(int fd, void *buf, unsigned long count);

/* exit(status) - does not return */

void exit(int status) __attribute__((noreturn));

/* brk(addr) - set program break */

long brk(void *addr);

/* === String functions === */

unsigned long strlen(const char *s);

int strcmp(const char *s1, const char *s2);

int strncmp(const char *s1, const char *s2, unsigned long n);

char *strcpy(char *dst, const char *src);

char *strncpy(char *dst, const char *src, unsigned long n);

void *memset(void *s, int c, unsigned long n);

void *memcpy(void *dst, const void *src, unsigned long n);

void *memmove(void *dst, const void *src, unsigned long n);

/* === Memory allocation (bump allocator) === */

void *malloc(unsigned long size);

void free(void *ptr);

/* === I/O === */

int puts(const char *s);

int putchar(int c);

/* printf - simplified, supports %d, %s, %x, %c, %u, %% */

int printf(const char *fmt, ...) __attribute__((format(printf, 1, 2)));

/* === Entry point === */

/* _start is defined in start.c and calls main() */

extern int main(int argc, char **argv);

#endif /* _LIBC_H */

1	/* libc.h - Minimal libc for Pactor64 userspace programs */
2	#ifndef _LIBC_H
3	#define _LIBC_H
4
5	/* Basic types for freestanding userspace */
6	typedef unsigned char uint8_t;
7	typedef unsigned short uint16_t;
8	typedef unsigned int uint32_t;
9	typedef unsigned long uint64_t;
10	typedef signed char int8_t;
11	typedef signed short int16_t;
12	typedef signed int int32_t;
13	typedef signed long int64_t;
14	typedef uint64_t size_t;
15	typedef int64_t ssize_t;
16
17	#define NULL ((void *)0)
18
19	/* GCC built-in va_list for variadic functions */
20	typedef __builtin_va_list va_list;
21	#define va_start(v,l) __builtin_va_start(v,l)
22	#define va_end(v) __builtin_va_end(v)
23	#define va_arg(v,t) __builtin_va_arg(v,t)
24
25	/* === System call wrappers === */
26
27	/* write(fd, buf, count) */
28	long write(int fd, const void *buf, unsigned long count);
29
30	/* read(fd, buf, count) */
31	long read(int fd, void *buf, unsigned long count);
32
33	/* exit(status) - does not return */
34	void exit(int status) __attribute__((noreturn));
35
36	/* brk(addr) - set program break */
37	long brk(void *addr);
38
39	/* === String functions === */
40
41	unsigned long strlen(const char *s);
42	int strcmp(const char s1, const char s2);
43	int strncmp(const char s1, const char s2, unsigned long n);
44	char strcpy(char dst, const char *src);
45	char strncpy(char dst, const char *src, unsigned long n);
46	void memset(void s, int c, unsigned long n);
47	void memcpy(void dst, const void *src, unsigned long n);
48	void memmove(void dst, const void *src, unsigned long n);
49
50	/* === Memory allocation (bump allocator) === */
51
52	void *malloc(unsigned long size);
53	void free(void *ptr);
54
55	/* === I/O === */
56
57	int puts(const char *s);
58	int putchar(int c);
59
60	/* printf - simplified, supports %d, %s, %x, %c, %u, %% */
61	int printf(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
62
63	/* === Entry point === */
64	/* _start is defined in start.c and calls main() */
65	extern int main(int argc, char **argv);
66
67	#endif /* _LIBC_H */
68