libc: core: implement assert, ctype, wctype, and stdlib functions

lib/libc/core/CMakeLists.txt

@@ -1,4 +1,4 @@
-set(source_dirs stdio string errno)
+set(source_dirs assert stdio stdlib string errno ctype wctype)
 
 foreach (dir ${source_dirs})
 	file(GLOB dir_sources ${CMAKE_CURRENT_SOURCE_DIR}/${dir}/*.c)

lib/libc/core/assert/assert.c

@@ -0,0 +1,10 @@
+#include <stdlib.h>
+
+extern void __libc_assert_failed(
+	const char *file,
+	int line,
+	const char *func,
+	const char *cond)
+{
+	abort();
+}

lib/libc/core/ctype/isalnum.c

@@ -0,0 +1,16 @@
+int isalnum(int c)
+{
+	if (c >= 'a' && c <= 'z') {
+		return 1;
+	}
+
+	if (c >= 'A' && c <= 'A') {
+		return 1;
+	}
+
+	if (c >= '0' && c <= '9') {
+		return 1;
+	}
+
+	return 0;
+}

lib/libc/core/ctype/isalpha.c

@@ -0,0 +1,12 @@
+int isalpha(int c)
+{
+	if (c >= 'a' && c <= 'z') {
+		return 1;
+	}
+
+	if (c >= 'A' && c <= 'A') {
+		return 1;
+	}
+
+	return 0;
+}

lib/libc/core/ctype/isdigit.c

@@ -0,0 +1,10 @@
+#include <ctype.h>
+
+int isdigit(int c)
+{
+	if (c >= '0' && c <= '9') {
+		return 1;
+	}
+
+	return 0;
+}

lib/libc/core/ctype/ispunct.c

@@ -0,0 +1,22 @@
+#include <ctype.h>
+
+int ispunct(int c)
+{
+	if (c >= 0x21 && c <= 0x2E) {
+		return 1;
+	}
+
+	if (c >= 0x3A && c <= 0x40) {
+		return 1;
+	}
+
+	if (c >= 0x5B && c <= 0x60) {
+		return 1;
+	}
+
+	if (c >= 0x7B && c <= 0x7E) {
+		return 1;
+	}
+
+	return 0;
+}

lib/libc/core/ctype/isspace.c

@@ -0,0 +1,13 @@
+#include <ctype.h>
+
+int isspace(int c)
+{
+	switch (c) {
+	case ' ':
+	case '\n':
+	case '\t':
+		return 1;
+	default:
+		return 0;
+	}
+}

lib/libc/core/ctype/isupper.c

@@ -0,0 +1,8 @@
+int isupper(int c)
+{
+	if (c >= 'A' && c <= 'Z') {
+		return 1;
+	}
+
+	return 0;
+}

lib/libc/core/ctype/isxdigit.c

@@ -0,0 +1,18 @@
+#include <ctype.h>
+
+int isxdigit(int c)
+{
+	if (c >= 'a' && c <= 'f') {
+		return 1;
+	}
+
+	if (c >= 'A' && c <= 'F') {
+		return 1;
+	}
+
+	if (c >= '0' && c <= '9') {
+		return 1;
+	}
+
+	return 0;
+}

lib/libc/core/ctype/tolower.c

@@ -0,0 +1,8 @@
+int tolower(int c)
+{
+	if (c >= 'A' && c <= 'Z') {
+		return (c - 'A') + 'a';
+	}
+
+	return c;
+}

lib/libc/core/ctype/toupper.c

@@ -0,0 +1,8 @@
+int toupper(int c)
+{
+	if (c >= 'a' && c <= 'z') {
+		return (c - 'a') + 'A';
+	}
+
+	return c;
+}

lib/libc/core/stdlib/abort.c

@@ -0,0 +1,6 @@
+#include <mango/task.h>
+
+void abort(void)
+{
+	task_exit(-1);
+}

lib/libc/core/stdlib/atexit.c

@@ -0,0 +1,6 @@
+
+int atexit(void (*func)(void))
+{
+	/* TODO */
+	return 0;
+}

lib/libc/core/stdlib/exit.c

@@ -0,0 +1,6 @@
+#include <mango/task.h>
+
+void exit(int code)
+{
+	task_exit(code);
+}

lib/libc/core/stdlib/strtol.c

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. [rescinded 22 July 1999]
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+
+long strtol(const char *restrict ptr, char **restrict endptr, register int base)
+{
+	const char *s = ptr;
+	long acc;
+	int c;
+	long cutoff;
+	int neg = 0, any, cutlim;
+
+	do {
+		c = *s++;
+	} while (isspace(c));
+
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+') {
+		c = *s++;
+	}
+
+	if ((base == 0 || base == 16) && c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+
+	if (base == 0) {
+		base = c == '0' ? 8 : 10;
+	}
+
+	cutoff = (long)LONG_MAX / (long)base;
+	cutlim = (long)LONG_MAX % (long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (isdigit(c)) {
+			c -= '0';
+		} else if (isalpha(c)) {
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		} else {
+			break;
+		}
+
+		if (c >= base) {
+			break;
+		}
+
+		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) {
+			any = -1;
+		} else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = LONG_MAX;
+		__set_errno(ERANGE);
+	} else if (neg) {
+		acc = -acc;
+	}
+
+	if (endptr != 0) {
+		*endptr = (char *)(any ? s - 1 : ptr);
+	}
+
+	return (acc);
+}

lib/libc/core/stdlib/strtoll.c

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. [rescinded 22 July 1999]
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+
+long long strtoll(
+	const char *restrict ptr,
+	char **restrict endptr,
+	register int base)
+{
+	const char *s = ptr;
+	long long acc;
+	int c;
+	long long cutoff;
+	int neg = 0, any, cutlim;
+
+	do {
+		c = *s++;
+	} while (isspace(c));
+
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+') {
+		c = *s++;
+	}
+
+	if ((base == 0 || base == 16) && c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+
+	if (base == 0) {
+		base = c == '0' ? 8 : 10;
+	}
+
+	cutoff = (long long)LLONG_MAX / (long long)base;
+	cutlim = (long long)LLONG_MAX % (long long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (isdigit(c)) {
+			c -= '0';
+		} else if (isalpha(c)) {
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		} else {
+			break;
+		}
+
+		if (c >= base) {
+			break;
+		}
+
+		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) {
+			any = -1;
+		} else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = LONG_MAX;
+		__set_errno(ERANGE);
+	} else if (neg) {
+		acc = -acc;
+	}
+
+	if (endptr != 0) {
+		*endptr = (char *)(any ? s - 1 : ptr);
+	}
+
+	return (acc);
+}

lib/libc/core/stdlib/strtoul.c

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. [rescinded 22 July 1999]
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+
+unsigned long strtoul(
+	const char *restrict ptr,
+	char **restrict endptr,
+	register int base)
+{
+	const char *s = ptr;
+	unsigned long acc;
+	int c;
+	unsigned long cutoff;
+	int neg = 0, any, cutlim;
+
+	do {
+		c = *s++;
+	} while (isspace(c));
+
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+') {
+		c = *s++;
+	}
+
+	if ((base == 0 || base == 16) && c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+
+	if (base == 0) {
+		base = c == '0' ? 8 : 10;
+	}
+
+	cutoff = (unsigned long)ULONG_MAX / (unsigned long)base;
+	cutlim = (unsigned long)ULONG_MAX % (unsigned long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (isdigit(c)) {
+			c -= '0';
+		} else if (isalpha(c)) {
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		} else {
+			break;
+		}
+
+		if (c >= base) {
+			break;
+		}
+
+		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) {
+			any = -1;
+		} else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = ULONG_MAX;
+		__set_errno(ERANGE);
+	} else if (neg) {
+		acc = -acc;
+	}
+
+	if (endptr != 0) {
+		*endptr = (char *)(any ? s - 1 : ptr);
+	}
+
+	return (acc);
+}

lib/libc/core/stdlib/strtoull.c

@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 1990 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. [rescinded 22 July 1999]
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+
+unsigned long long strtoull(
+	const char *restrict ptr,
+	char **restrict endptr,
+	register int base)
+{
+	const char *s = ptr;
+	unsigned long long acc;
+	int c;
+	unsigned long long cutoff;
+	int neg = 0, any, cutlim;
+
+	do {
+		c = *s++;
+	} while (isspace(c));
+
+	if (c == '-') {
+		neg = 1;
+		c = *s++;
+	} else if (c == '+') {
+		c = *s++;
+	}
+
+	if ((base == 0 || base == 16) && c == '0' && (*s == 'x' || *s == 'X')) {
+		c = s[1];
+		s += 2;
+		base = 16;
+	}
+
+	if (base == 0) {
+		base = c == '0' ? 8 : 10;
+	}
+
+	cutoff = (unsigned long long)ULLONG_MAX / (unsigned long long)base;
+	cutlim = (unsigned long long)ULLONG_MAX % (unsigned long long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (isdigit(c)) {
+			c -= '0';
+		} else if (isalpha(c)) {
+			c -= isupper(c) ? 'A' - 10 : 'a' - 10;
+		} else {
+			break;
+		}
+
+		if (c >= base) {
+			break;
+		}
+
+		if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) {
+			any = -1;
+		} else {
+			any = 1;
+			acc *= base;
+			acc += c;
+		}
+	}
+	if (any < 0) {
+		acc = ULLONG_MAX;
+		__set_errno(ERANGE);
+	} else if (neg) {
+		acc = -acc;
+	}
+
+	if (endptr != 0) {
+		*endptr = (char *)(any ? s - 1 : ptr);
+	}
+
+	return (acc);
+}

lib/libc/core/wctype/iswnumber.c

@@ -0,0 +1,8 @@
+#include <ctype.h>
+#include <wctype.h>
+
+int iswnumber(wchar_t c)
+{
+	/* TODO locale support */
+	return isdigit((int)c);
+}

lib/libc/core/wctype/iswpunct.c

@@ -0,0 +1,8 @@
+#include <ctype.h>
+#include <wctype.h>
+
+int iswpunct(wchar_t c)
+{
+	/* TODO locale support */
+	return ispunct((int)c);
+}

lib/libc/core/wctype/iswspace.c

@@ -0,0 +1,8 @@
+#include <ctype.h>
+#include <wctype.h>
+
+int iswspace(wchar_t c)
+{
+	/* TODO locale support */
+	return isspace((int)c);
+}

lib/libc/core/wctype/iswxdigit.c

@@ -0,0 +1,8 @@
+#include <ctype.h>
+#include <wctype.h>
+
+int iswxdigit(wchar_t c)
+{
+	/* TODO locale support */
+	return isxdigit((int)c);
+}