milkway: add mw-byteorder.h & mw-config.h

5 files changed, 301 insertions, 0 deletions

diff --git a/milkway/Makefile.am b/milkway/Makefile.am
index 2b83b8c..11265ba 100644
--- a/milkway/Makefile.am
+++ b/milkway/Makefile.am
@@ -21,6 +21,8 @@ libmilkwayincludedir = $(includedir)/milkway/milkway
 libmilkwayinclude_HEADER = \
 	milkway.h \
 	mw-assert.h \
+	mw-byteorder.h \
+	mw-config.h \
 	mw-types.h \
 	mw-compiler.h \
 	mw-crypt.h
diff --git a/milkway/milkway.h b/milkway/milkway.h
index fcf9932..e384937 100644
--- a/milkway/milkway.h
+++ b/milkway/milkway.h
@@ -20,9 +20,11 @@
 #endif
 
 #include <milkway/mw-compiler.h>
+#include <milkway/mw-config.h>
 #include <milkway/mw-types.h>
 #include <milkway/mw-error.h>
 #include <milkway/mw-assert.h>
+#include <milkway/mw-byteorder.h>
 #include <milkway/mw-crypt.h>
 #include <milkway/mw-checksum.h>
 #include <milkway/mw-hexlify.h>
diff --git a/milkway/mw-byteorder.h b/milkway/mw-byteorder.h
new file mode 100644
index 0000000..d934276
--- /dev/null
+++ b/milkway/mw-byteorder.h
@@ -0,0 +1,209 @@
+/* Milkway
+ *
+ * Copyright (C) 2009- Luo Jinghua <sunmoon1997@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#ifndef FBYTEORDER_H
+#define FBYTEORDER_H
+
+#include <milkway/mw-types.h>
+#include <milkway/mw-config.h>
+#include <milkway/mw-compiler.h>
+
+/**
+ * @file mw-byteorder.h
+ * @brief convert values between little endian and big endian.
+ *
+ * flib only supports little endian and big endian.
+ */
+
+MW_BEGIN_DECLS
+
+/**
+ * @brief little edian value
+ */
+#define MW_BYTEORDER_LITTLE_ENDIAN 1
+/**
+ * @brief big edian value
+ */
+#define MW_BYTEORDER_BIG_ENDIAN    2
+
+/**
+ * @brief the byteoder of current platform
+ *
+ * if the endian is little endian, then
+ * MW_BYTEORDER is defined as MW_BYTEORDER_LITTLE_ENDIAN,
+ * otherwise it's defined as MW_BYTEORDER_BIG_ENDIAN.
+ *
+ * Any endian other then little endian and bit endian is
+ * unsupported by flib.
+ */
+#if defined(__PPC__) || defined(__PPC64__) || defined(__sparc__) || defined(WORDS_BIGENDIAN)
+#define MW_BYTEORDER MW_BYTEORDER_BIG_ENDIAN
+#else
+#define MW_BYTEORDER MW_BYTEORDER_LITTLE_ENDIAN
+#endif
+
+/**
+ * @brief Swaps a 16bit unsigned integer
+ *
+ * @param u the integer
+ * @return the swaped value of integer
+ */
+static mw_inline mw_uint16_t
+mw_swap16 (mw_uint16_t u)
+{
+    return
+        (u & 0xff00) >> 8 |
+        (u & 0x00ff) << 8;
+}
+
+/**
+ * @brief Swaps a 32bit unsigned integer
+ *
+ * @param u the integer
+ * @return the swaped value of integer
+ */
+static mw_inline mw_uint32_t
+mw_swap32 (mw_uint32_t u)
+{
+    return
+        (u & 0xff000000) >> 24 |
+        (u & 0x00ff0000) >> 16 |
+        (u & 0x0000ff00) << 16 |
+        (u & 0x000000ff) << 24;
+}
+
+/**
+ * @brief Swaps a 64bit unsigned integer
+ *
+ * @param u the integer
+ * @return the swaped value of integer
+ */
+static mw_inline mw_uint64_t
+mw_swap64 (mw_uint64_t u)
+{
+    return
+        (u & MW_U64_CONST(0xff00000000000000)) >> 56 |
+        (u & MW_U64_CONST(0x00ff000000000000)) >> 48 |
+        (u & MW_U64_CONST(0x0000ff0000000000)) >> 32 |
+        (u & MW_U64_CONST(0x000000ff00000000)) >> 24 |
+        (u & MW_U64_CONST(0x00000000ff000000)) << 24 |
+        (u & MW_U64_CONST(0x0000000000ff0000)) << 32 |
+        (u & MW_U64_CONST(0x000000000000ff00)) << 48 |
+        (u & MW_U64_CONST(0x00000000000000ff)) << 56;
+}
+
+/**
+ * @brief convert a value from big endien to host byte order
+ *
+ * @param u the integer in big endian
+ * @return the value of integer in host byte order
+ */
+static mw_inline mw_uint16_t
+mw_betoh16 (mw_uint16_t u)
+{
+#ifdef MW_WORDS_BIGENDIAN
+    return u;
+#else
+    return mw_swap16 (u);
+#endif
+}
+
+/**
+ * @brief convert a value from big endien to host byte order
+ *
+ * @param u the integer in big endian
+ * @return the value of integer in host byte order
+ */
+static mw_inline mw_uint32_t
+mw_betoh32 (mw_uint32_t u)
+{
+#ifdef MW_WORDS_BIGENDIAN
+    return u;
+#else
+    return mw_swap32 (u);
+#endif
+}
+
+/**
+ * @brief convert a value from big endien to host byte order
+ *
+ * @param u the integer in big endian
+ * @return the value of integer in host byte order
+ */
+static mw_inline mw_uint64_t
+mw_betoh64 (mw_uint64_t u)
+{
+#ifdef MW_WORDS_BIGENDIAN
+    return u;
+#else
+    return mw_swap64 (u);
+#endif
+}
+
+/**
+ * @brief convert a value from little endien to host byte order
+ *
+ * @param u the integer in big endian
+ * @return the value of integer in host byte order
+ */
+static mw_inline mw_uint16_t
+mw_letoh16 (mw_uint16_t u)
+{
+#ifdef MW_WORDS_BIGENDIAN
+    return mw_swap16 (u);
+#else
+    return u;
+#endif
+}
+
+/**
+ * @brief convert a value from little endien to host byte order
+ *
+ * @param u the integer in big endian
+ * @return the value of integer in host byte order
+ */
+static mw_inline mw_uint32_t
+mw_letoh32 (mw_uint32_t u)
+{
+#ifdef MW_WORDS_BIGENDIAN
+    return mw_swap32 (u);
+#else
+    return u;
+#endif
+}
+
+/**
+ * @brief convert values from little endien to host byte order
+ *
+ * @param u the integer in little endian
+ * @return the value of integer in host byte order
+ */
+static mw_inline mw_uint64_t
+mw_letoh64 (mw_uint64_t u)
+{
+#ifdef MW_WORDS_BIGENDIAN
+    return mw_swap64 (u);
+#else
+    return u;
+#endif
+}
+
+MW_END_DECLS
+
+#endif
diff --git a/milkway/mw-compiler.h b/milkway/mw-compiler.h
index 9ed8424..8cab8e2 100644
--- a/milkway/mw-compiler.h
+++ b/milkway/mw-compiler.h
@@ -37,4 +37,34 @@
 #define mw_export
 #endif
 
+#if defined(__GNUC__)
+#define mw_inline __inline__
+#define MW_I64_CONST(c) (c##LL)
+#define MW_U64_CONST(c) (c##ULL)
+#elif defined(_MSC_VER)
+#define mw_inline __forceinline
+#define MW_I64_CONST(c) (c##i64)
+#define MW_U64_CONST(c) (c##ui64)
+#endif
+
+#ifndef MW_I64_CONST
+#define MW_I64_CONST(c) c
+#define MW_U64_CONST(c) c
+#endif
+
+/**
+ * @brief a marker for a inline function
+ */
+#ifndef mw_inline
+#define mw_inline
+#endif
+
+#if defined(__cplusplus) || defined(cplusplus)
+#define  MW_BEGIN_DECLS extern "C" {
+#define  MW_END_DECLS   }
+#else
+#define  MW_BEGIN_DECLS
+#define  MW_END_DECLS
+#endif
+
 #endif
diff --git a/milkway/mw-config.h b/milkway/mw-config.h
new file mode 100644
index 0000000..efae810
--- /dev/null
+++ b/milkway/mw-config.h
@@ -0,0 +1,58 @@
+/* Milkway
+
+ * Copyright (C) 2009- Luo Jinghua <sunmoon1997@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more
+ */
+#ifndef MW_CONFIG_H
+#define MW_CONFIG_H
+
+#if defined(__i386__) /* gcc */ || defined(_M_IX86) /* msvc */ || defined(_X86_) || defined(__386__) || defined(i386) || defined(__i386) /* Sun cc */
+#define MW_ARCH_X86
+#endif
+
+#if defined(__x86_64__) /* gcc */ || defined(_M_X64) /* msvc */ || defined(_M_AMD64) /* msvc */ || defined(__x86_64) /* Sun cc */
+#define MW_ARCH_X86_64
+#endif
+
+#if defined(__PPC__)
+#define MW_ARCH_PPC
+#if defined(__PPC64__)
+#define MW_ARCH_PPC_64
+#endif
+#endif
+
+#if defined(__mips__) || defined(__mipse__)
+#define MW_ARCH_MIPS
+#endif
+
+#if defined(__linux__)
+#define MW_OS_LINUX
+#endif
+
+#if defined(__FreeBSD__)
+#define MW_OS_BSD
+#endif
+
+#if defined(__sun)
+#define MW_OS_SOLARIS
+#endif
+
+#if defined(__APPLE__)
+#define MW_OS_APPLE
+#endif
+
+#if defined(_WIN32) || defined(WIN32)
+#define MW_OS_WINDOWS
+#endif
+
+
+#endif