diff options
Diffstat (limited to 'src/stdlib.c')
| -rw-r--r-- | src/stdlib.c | 49 |
1 files changed, 30 insertions, 19 deletions
diff --git a/src/stdlib.c b/src/stdlib.c index fa2806b..1832033 100644 --- a/src/stdlib.c +++ b/src/stdlib.c @@ -1,4 +1,10 @@ +#include <stdarg.h> #include <stdint.h> +#include <string.h> + +#include <heap.h> + +extern char *itoa(int, char *, int); void _exit(int code) { @@ -6,28 +12,33 @@ void _exit(int code) for (;;); } -int _getpid(int pid) +int ksnprintf(char *buf, unsigned int count, const char *format, ...) { - (void)pid; - return 0; -} + (void)count; -void _kill(int pid) -{ - (void)pid; -} + va_list args; + va_start(args, format); -void _sbrk(void) -{ + unsigned int i = 0, o = 0; + while (o < count && format[i] != '\0') { + if (format[i] == '%') { + if (format[i + 1] == 'd') { + char *s = itoa(va_arg(args, int), malloc(16), 10); + strncpy(buf + o, s, count - o); + o += strlen(s); + free(s); + } else if (format[i + 1] == 'f') { + strncpy(buf + o, "float", count - o); + o += 5; + } + i++; + } else { + buf[o++] = format[i]; + } -} + i++; + } -char *itoa(int n, int base) -{ - static char buf[16]; - char *p = buf + 15; - *p = '\0'; - do *--p = "0123456789ABCDEF"[n % base]; - while (n /= base); - return p; + return o; } + |