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#ifndef _UNISTD_H
#define _UNISTD_H
#include <stdint.h>
#ifndef _SSIZE_T
#define _SSIZE_T
typedef int32_t ssize_t;
#endif
typedef int16_t pid_t;
#define __SYS_puts 0
#define __SYS_time 1
#define __SYS_getpid 2
#define __SYS_getpdir 3
#define __SYS_signal 4
#define __SYS_alarm 5
#define __SYS_pause 6
#define __SYS_ctty 7
#define __SYS_read 8
#define __SYS_write 9
#define __SYS_kill 10
#define __SYS_panic 11
#define _syscall0(type, name) \
type name(void) { \
type __res; \
__asm__ volatile ( \
"int $0x80" \
: "=a" (__res) \
: "a" (__SYS_##name) \
); \
return __res; \
}
#define _syscall1(type, name, atype, a) \
type name(atype a) { \
type __res; \
__asm__ volatile ( \
"int $0x80" \
: "=a" (__res) \
: "a" (__SYS_##name), "b" (a) \
); \
return __res; \
}
#define _syscall2(type, name, atype, a, btype, b) \
type name(atype a, btype b) { \
type __res; \
__asm__ volatile ( \
"int $0x80" \
: "=a" (__res) \
: "a" (__SYS_##name), "b" (a), "c" (b) \
); \
return __res; \
}
pid_t getpid(void);
void *getpdir(void);
int pause(void);
void panic(void);
#endif
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