Create local C library implementation (2/2)
- This change is split into two separate patches in order to
simplify the history as interpreted by 'git'. The split is
between the move/rename and addition of new files.
- Remove dependency on toolchain C library headers and functions in
order to ensure behavioural compatibility between toolchains.
- Use FreeBSD as reference for C library implementation.
- Do not let GCC use default library include paths.
- Remove unused definitions in modified headers and implementations.
- Move C library files to 'lib/stdlib' and 'include/stdlib'.
- Break std.c functions out into separate files.
Change-Id: I3e3d8d992052264d2a02489034ae4c03bf0f5512
diff --git a/include/stdlib/machine/_limits.h b/include/stdlib/machine/_limits.h
new file mode 100644
index 0000000..49a768b
--- /dev/null
+++ b/include/stdlib/machine/_limits.h
@@ -0,0 +1,85 @@
+/*-
+ * Copyright (c) 1988, 1993
+ * The 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.
+ *
+ * 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.
+ *
+ * @(#)limits.h 8.3 (Berkeley) 1/4/94
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE__LIMITS_H_
+#define _MACHINE__LIMITS_H_
+
+/*
+ * According to ANSI (section 2.2.4.2), the values below must be usable by
+ * #if preprocessing directives. Additionally, the expression must have the
+ * same type as would an expression that is an object of the corresponding
+ * type converted according to the integral promotions. The subtraction for
+ * INT_MIN, etc., is so the value is not unsigned; e.g., 0x80000000 is an
+ * unsigned int for 32-bit two's complement ANSI compilers (section 3.1.3.2).
+ */
+
+#define __CHAR_BIT 8 /* number of bits in a char */
+
+#define __SCHAR_MAX 0x7f /* max value for a signed char */
+#define __SCHAR_MIN (-0x7f-1) /* min value for a signed char */
+
+#define __UCHAR_MAX 0xff /* max value for an unsigned char */
+
+#define __USHRT_MAX 0xffff /* max value for an unsigned short */
+#define __SHRT_MAX 0x7fff /* max value for a short */
+#define __SHRT_MIN (-0x7fff-1) /* min value for a short */
+
+#define __UINT_MAX 0xffffffff /* max value for an unsigned int */
+#define __INT_MAX 0x7fffffff /* max value for an int */
+#define __INT_MIN (-0x7fffffff-1) /* min value for an int */
+
+#define __ULONG_MAX 0xffffffffffffffff /* max for an unsigned long */
+#define __LONG_MAX 0x7fffffffffffffff /* max for a long */
+#define __LONG_MIN (-0x7fffffffffffffff-1) /* min for a long */
+
+/* Long longs have the same size but not the same type as longs. */
+ /* max for an unsigned long long */
+#define __ULLONG_MAX 0xffffffffffffffffULL
+#define __LLONG_MAX 0x7fffffffffffffffLL /* max for a long long */
+#define __LLONG_MIN (-0x7fffffffffffffffLL-1) /* min for a long long */
+
+#define __SSIZE_MAX __LONG_MAX /* max value for a ssize_t */
+
+#define __SIZE_T_MAX __ULONG_MAX /* max value for a size_t */
+
+#define __OFF_MAX __LONG_MAX /* max value for an off_t */
+#define __OFF_MIN __LONG_MIN /* min value for an off_t */
+
+/* Quads and longs are the same size. Ensure they stay in sync. */
+#define __UQUAD_MAX (__ULONG_MAX) /* max value for a uquad_t */
+#define __QUAD_MAX (__LONG_MAX) /* max value for a quad_t */
+#define __QUAD_MIN (__LONG_MIN) /* min value for a quad_t */
+
+#define __LONG_BIT 64
+#define __WORD_BIT 32
+
+/* Minimum signal stack size. */
+#define __MINSIGSTKSZ (1024 * 4)
+
+#endif /* !_MACHINE__LIMITS_H_ */