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/* gbos userland C API (thin wrappers over rst $30 syscalls; see c/libc.s) */
#ifndef GBOS_H
#define GBOS_H
#define EOF 4 /* readc() returns this at end of input */
void writes(const char *buf, unsigned char len);
void putc(char c);
void puts(const char *s); /* write a NUL-terminated string */
void nl(void); /* newline (CRLF) */
unsigned char strlen(const char *s);
char *getargs(void); /* this program's argument string */
char readc(void); /* one input byte, EOF at end */
void sexit(unsigned char code);
unsigned char getpid(void);
/* helpers (c/libc.c) */
void putu(unsigned int n); /* print decimal */
unsigned char atou(const char *s); /* parse decimal */
unsigned char argv_parse(char **argv, unsigned char maxv); /* argc/argv */
unsigned char hasflag(char **argv, unsigned char argc, char f); /* -x flag */
char *optval(char **argv, unsigned char argc, char opt); /* -x VALUE */
#endif
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