3 files changed, 138 insertions, 0 deletions

diff --git a/tools/include/nolibc/stdint.h b/tools/include/nolibc/stdint.h
index 6665e272e213..cd79ddd6170e 100644
--- a/tools/include/nolibc/stdint.h
+++ b/tools/include/nolibc/stdint.h
@@ -96,6 +96,10 @@ typedef uint64_t          uintmax_t;
 #define UINT_FAST32_MAX  SIZE_MAX
 #define UINT_FAST64_MAX  UINT64_MAX
 
+#define INTMAX_MIN       INT64_MIN
+#define INTMAX_MAX       INT64_MAX
+#define UINTMAX_MAX      UINT64_MAX
+
 #ifndef INT_MIN
 #define INT_MIN          (-__INT_MAX__ - 1)
 #endif
@@ -110,4 +114,19 @@ typedef uint64_t          uintmax_t;
 #define LONG_MAX         __LONG_MAX__
 #endif
 
+#ifndef ULONG_MAX
+#define ULONG_MAX         ((unsigned long)(__LONG_MAX__) * 2 + 1)
+#endif
+
+#ifndef LLONG_MIN
+#define LLONG_MIN         (-__LONG_LONG_MAX__ - 1)
+#endif
+#ifndef LLONG_MAX
+#define LLONG_MAX         __LONG_LONG_MAX__
+#endif
+
+#ifndef ULLONG_MAX
+#define ULLONG_MAX         ((unsigned long long)(__LONG_LONG_MAX__) * 2 + 1)
+#endif
+
 #endif /* _NOLIBC_STDINT_H */
diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h
index 16cd4d807251..c968dbbc4ef8 100644
--- a/tools/include/nolibc/stdio.h
+++ b/tools/include/nolibc/stdio.h
@@ -376,6 +376,16 @@ int setvbuf(FILE *stream __attribute__((unused)),
 	return 0;
 }
 
+static __attribute__((unused))
+const char *strerror(int errno)
+{
+	static char buf[18] = "errno=";
+
+	i64toa_r(errno, &buf[6]);
+
+	return buf;
+}
+
 /* make sure to include all global symbols */
 #include "nolibc.h"
 
diff --git a/tools/include/nolibc/stdlib.h b/tools/include/nolibc/stdlib.h
index 5be9d3c7435a..75aa273c23a6 100644
--- a/tools/include/nolibc/stdlib.h
+++ b/tools/include/nolibc/stdlib.h
@@ -438,6 +438,115 @@ char *u64toa(uint64_t in)
 	return itoa_buffer;
 }
 
+static __attribute__((unused))
+uintmax_t __strtox(const char *nptr, char **endptr, int base, intmax_t lower_limit, uintmax_t upper_limit)
+{
+	const char signed_ = lower_limit != 0;
+	unsigned char neg = 0, overflow = 0;
+	uintmax_t val = 0, limit, old_val;
+	char c;
+
+	if (base < 0 || base > 36) {
+		SET_ERRNO(EINVAL);
+		goto out;
+	}
+
+	while (isspace(*nptr))
+		nptr++;
+
+	if (*nptr == '+') {
+		nptr++;
+	} else if (*nptr == '-') {
+		neg = 1;
+		nptr++;
+	}
+
+	if (signed_ && neg)
+		limit = -(uintmax_t)lower_limit;
+	else
+		limit = upper_limit;
+
+	if ((base == 0 || base == 16) &&
+	    (strncmp(nptr, "0x", 2) == 0 || strncmp(nptr, "0X", 2) == 0)) {
+		base = 16;
+		nptr += 2;
+	} else if (base == 0 && strncmp(nptr, "0", 1) == 0) {
+		base = 8;
+		nptr += 1;
+	} else if (base == 0) {
+		base = 10;
+	}
+
+	while (*nptr) {
+		c = *nptr;
+
+		if (c >= '0' && c <= '9')
+			c -= '0';
+		else if (c >= 'a' && c <= 'z')
+			c = c - 'a' + 10;
+		else if (c >= 'A' && c <= 'Z')
+			c = c - 'A' + 10;
+		else
+			goto out;
+
+		if (c >= base)
+			goto out;
+
+		nptr++;
+		old_val = val;
+		val *= base;
+		val += c;
+
+		if (val > limit || val < old_val)
+			overflow = 1;
+	}
+
+out:
+	if (overflow) {
+		SET_ERRNO(ERANGE);
+		val = limit;
+	}
+	if (endptr)
+		*endptr = (char *)nptr;
+	return neg ? -val : val;
+}
+
+static __attribute__((unused))
+long strtol(const char *nptr, char **endptr, int base)
+{
+	return __strtox(nptr, endptr, base, LONG_MIN, LONG_MAX);
+}
+
+static __attribute__((unused))
+unsigned long strtoul(const char *nptr, char **endptr, int base)
+{
+	return __strtox(nptr, endptr, base, 0, ULONG_MAX);
+}
+
+static __attribute__((unused))
+long long strtoll(const char *nptr, char **endptr, int base)
+{
+	return __strtox(nptr, endptr, base, LLONG_MIN, LLONG_MAX);
+}
+
+static __attribute__((unused))
+unsigned long long strtoull(const char *nptr, char **endptr, int base)
+{
+	return __strtox(nptr, endptr, base, 0, ULLONG_MAX);
+}
+
+static __attribute__((unused))
+intmax_t strtoimax(const char *nptr, char **endptr, int base)
+{
+	return __strtox(nptr, endptr, base, INTMAX_MIN, INTMAX_MAX);
+}
+
+static __attribute__((unused))
+uintmax_t strtoumax(const char *nptr, char **endptr, int base)
+{
+	return __strtox(nptr, endptr, base, 0, UINTMAX_MAX);
+}
+
 /* make sure to include all global symbols */
 #include "nolibc.h"