107 lines
1.6 KiB
C
107 lines
1.6 KiB
C
#include "types.h"
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#include "stat.h"
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#include "fcntl.h"
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#include "user.h"
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#include "x86.h"
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char*strcpy(char *s, const char *t) {
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char *os;
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os = s;
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while ((*s++ = *t++) != 0) {
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;
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}
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return os;
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}
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int strcmp(const char *p, const char *q) {
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while (*p && *p == *q) {
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p++, q++;
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}
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return (uchar) * p - (uchar) * q;
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}
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uint strlen(const char *s) {
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int n;
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for (n = 0; s[n]; n++) {
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;
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}
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return n;
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}
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void* memset(void *dst, int c, uint n) {
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stosb(dst, c, n);
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return dst;
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}
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char* strchr(const char *s, char c) {
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for (; *s; s++) {
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if (*s == c) {
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return (char*)s;
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}
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}
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return 0;
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}
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char* gets(char *buf, int max) {
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int i, cc;
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char c;
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for (i = 0; i + 1 < max;) {
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cc = read(0, &c, 1);
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if (cc < 1) {
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break;
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}
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buf[i++] = c;
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if (c == '\n' || c == '\r') {
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break;
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}
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}
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buf[i] = '\0';
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return buf;
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}
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int stat(const char *n, struct stat *st) {
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int fd;
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int r;
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fd = open(n, O_RDONLY);
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if (fd < 0) {
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return -1;
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}
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r = fstat(fd, st);
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close(fd);
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return r;
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}
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int atoi(const char *s) {
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int n;
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n = 0;
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while ('0' <= *s && *s <= '9') {
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n = n * 10 + *s++ - '0';
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}
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return n;
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}
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void* memmove(void *vdst, const void *vsrc, int n) {
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char *dst;
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const char *src;
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dst = vdst;
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src = vsrc;
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while (n-- > 0) {
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*dst++ = *src++;
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}
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return vdst;
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}
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__attribute__((noreturn))
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int _init(int argc, char* argv[]) {
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main(argc, argv);
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exit();
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}
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