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authorWladimir J. van der Laan <laanwj@gmail.com>2014-12-19 09:53:43 +0100
committerWladimir J. van der Laan <laanwj@gmail.com>2015-03-06 15:54:53 +0100
commit4414f5ffe130f46becdc75c8e59ee74604e978aa (patch)
tree857dbb3624c21023894060ea030f55f4628432e3 /src
parent51377c2dbe0d71dad953a43187749a38010d1f1f (diff)
build: Endian compatibility
- Detect endian instead of stopping configure on big-endian - Add `byteswap.h` and `endian.h` header for compatibility with Windows and other operating systems that don't come with them - Update `crypto/common.h` functions to use compat endian header
Diffstat (limited to 'src')
-rw-r--r--src/Makefile.am2
-rw-r--r--src/compat/byteswap.h47
-rw-r--r--src/compat/endian.h194
-rw-r--r--src/crypto/common.h76
4 files changed, 254 insertions, 65 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index e1d467ff85..da65efa713 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -141,6 +141,8 @@ BITCOIN_CORE_H = \
walletdb.h \
wallet.h \
wallet_ismine.h \
+ compat/byteswap.h \
+ compat/endian.h \
compat/sanity.h
JSON_H = \
diff --git a/src/compat/byteswap.h b/src/compat/byteswap.h
new file mode 100644
index 0000000000..899220bdc5
--- /dev/null
+++ b/src/compat/byteswap.h
@@ -0,0 +1,47 @@
+// Copyright (c) 2014 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_COMPAT_BYTESWAP_H
+#define BITCOIN_COMPAT_BYTESWAP_H
+
+#if defined(HAVE_CONFIG_H)
+#include "config/bitcoin-config.h"
+#endif
+
+#include <stdint.h>
+
+#if defined(HAVE_BYTESWAP_H)
+#include <byteswap.h>
+#endif
+
+#if HAVE_DECL_BSWAP_16 == 0
+inline uint16_t bswap_16(uint16_t x)
+{
+ return (x >> 8) | ((x & 0x00ff) << 8);
+}
+#endif // HAVE_DECL_BSWAP16
+
+#if HAVE_DECL_BSWAP_32 == 0
+inline uint32_t bswap_32(uint32_t x)
+{
+ return (((x & 0xff000000U) >> 24) | ((x & 0x00ff0000U) >> 8) |
+ ((x & 0x0000ff00U) << 8) | ((x & 0x000000ffU) << 24));
+}
+#endif // HAVE_DECL_BSWAP32
+
+#if HAVE_DECL_BSWAP_64 == 0
+inline uint64_t bswap_64(uint64_t x)
+{
+ return (((x & 0xff00000000000000ull) >> 56)
+ | ((x & 0x00ff000000000000ull) >> 40)
+ | ((x & 0x0000ff0000000000ull) >> 24)
+ | ((x & 0x000000ff00000000ull) >> 8)
+ | ((x & 0x00000000ff000000ull) << 8)
+ | ((x & 0x0000000000ff0000ull) << 24)
+ | ((x & 0x000000000000ff00ull) << 40)
+ | ((x & 0x00000000000000ffull) << 56));
+}
+#endif // HAVE_DECL_BSWAP64
+
+#endif // BITCOIN_COMPAT_BYTESWAP_H
diff --git a/src/compat/endian.h b/src/compat/endian.h
new file mode 100644
index 0000000000..4d041d6554
--- /dev/null
+++ b/src/compat/endian.h
@@ -0,0 +1,194 @@
+// Copyright (c) 2014 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_COMPAT_ENDIAN_H
+#define BITCOIN_COMPAT_ENDIAN_H
+
+#if defined(HAVE_CONFIG_H)
+#include "config/bitcoin-config.h"
+#endif
+
+#include <stdint.h>
+
+#include "compat/byteswap.h"
+
+#if defined(HAVE_ENDIAN_H)
+#include <endian.h>
+#endif
+
+#if defined(WORDS_BIGENDIAN)
+
+#if HAVE_DECL_HTOBE16 == 0
+inline uint16_t htobe16(uint16_t host_16bits)
+{
+ return host_16bits;
+}
+#endif // HAVE_DECL_HTOBE16
+
+#if HAVE_DECL_HTOLE16 == 0
+inline uint16_t htole16(uint16_t host_16bits)
+{
+ return bswap_16(host_16bits);
+}
+#endif // HAVE_DECL_HTOLE16
+
+#if HAVE_DECL_BE16TOH == 0
+inline uint16_t be16toh(uint16_t big_endian_16bits)
+{
+ return big_endian_16bits;
+}
+#endif // HAVE_DECL_BE16TOH
+
+#if HAVE_DECL_LE16TOH == 0
+inline uint16_t le16toh(uint16_t little_endian_16bits)
+{
+ return bswap_16(little_endian_16bits);
+}
+#endif // HAVE_DECL_LE16TOH
+
+#if HAVE_DECL_HTOBE32 == 0
+inline uint32_t htobe32(uint32_t host_32bits)
+{
+ return host_32bits;
+}
+#endif // HAVE_DECL_HTOBE32
+
+#if HAVE_DECL_HTOLE32 == 0
+inline uint32_t htole32(uint32_t host_32bits)
+{
+ return bswap_32(host_32bits);
+}
+#endif // HAVE_DECL_HTOLE32
+
+#if HAVE_DECL_BE32TOH == 0
+inline uint32_t be32toh(uint32_t big_endian_32bits)
+{
+ return big_endian_32bits;
+}
+#endif // HAVE_DECL_BE32TOH
+
+#if HAVE_DECL_LE32TOH == 0
+inline uint32_t le32toh(uint32_t little_endian_32bits)
+{
+ return bswap_32(little_endian_32bits);
+}
+#endif // HAVE_DECL_LE32TOH
+
+#if HAVE_DECL_HTOBE64 == 0
+inline uint64_t htobe64(uint64_t host_64bits)
+{
+ return host_64bits;
+}
+#endif // HAVE_DECL_HTOBE64
+
+#if HAVE_DECL_HTOLE64 == 0
+inline uint64_t htole64(uint64_t host_64bits)
+{
+ return bswap_64(host_64bits);
+}
+#endif // HAVE_DECL_HTOLE64
+
+#if HAVE_DECL_BE64TOH == 0
+inline uint64_t be64toh(uint64_t big_endian_64bits)
+{
+ return big_endian_64bits;
+}
+#endif // HAVE_DECL_BE64TOH
+
+#if HAVE_DECL_LE64TOH == 0
+inline uint64_t le64toh(uint64_t little_endian_64bits)
+{
+ return bswap_64(little_endian_64bits);
+}
+#endif // HAVE_DECL_LE64TOH
+
+#else // WORDS_BIGENDIAN
+
+#if HAVE_DECL_HTOBE16 == 0
+inline uint16_t htobe16(uint16_t host_16bits)
+{
+ return bswap_16(host_16bits);
+}
+#endif // HAVE_DECL_HTOBE16
+
+#if HAVE_DECL_HTOLE16 == 0
+inline uint16_t htole16(uint16_t host_16bits)
+{
+ return host_16bits;
+}
+#endif // HAVE_DECL_HTOLE16
+
+#if HAVE_DECL_BE16TOH == 0
+inline uint16_t be16toh(uint16_t big_endian_16bits)
+{
+ return bswap_16(big_endian_16bits);
+}
+#endif // HAVE_DECL_BE16TOH
+
+#if HAVE_DECL_LE16TOH == 0
+inline uint16_t le16toh(uint16_t little_endian_16bits)
+{
+ return little_endian_16bits;
+}
+#endif // HAVE_DECL_LE16TOH
+
+#if HAVE_DECL_HTOBE32 == 0
+inline uint32_t htobe32(uint32_t host_32bits)
+{
+ return bswap_32(host_32bits);
+}
+#endif // HAVE_DECL_HTOBE32
+
+#if HAVE_DECL_HTOLE32 == 0
+inline uint32_t htole32(uint32_t host_32bits)
+{
+ return host_32bits;
+}
+#endif // HAVE_DECL_HTOLE32
+
+#if HAVE_DECL_BE32TOH == 0
+inline uint32_t be32toh(uint32_t big_endian_32bits)
+{
+ return bswap_32(big_endian_32bits);
+}
+#endif // HAVE_DECL_BE32TOH
+
+#if HAVE_DECL_LE32TOH == 0
+inline uint32_t le32toh(uint32_t little_endian_32bits)
+{
+ return little_endian_32bits;
+}
+#endif // HAVE_DECL_LE32TOH
+
+#if HAVE_DECL_HTOBE64 == 0
+inline uint64_t htobe64(uint64_t host_64bits)
+{
+ return bswap_64(host_64bits);
+}
+#endif // HAVE_DECL_HTOBE64
+
+#if HAVE_DECL_HTOLE64 == 0
+inline uint64_t htole64(uint64_t host_64bits)
+{
+ return host_64bits;
+}
+#endif // HAVE_DECL_HTOLE64
+
+#if HAVE_DECL_BE64TOH == 0
+inline uint64_t be64toh(uint64_t big_endian_64bits)
+{
+ return bswap_64(big_endian_64bits);
+}
+#endif // HAVE_DECL_BE64TOH
+
+#if HAVE_DECL_LE64TOH == 0
+inline uint64_t le64toh(uint64_t little_endian_64bits)
+{
+ return little_endian_64bits;
+}
+#endif // HAVE_DECL_LE64TOH
+
+#endif // WORDS_BIGENDIAN
+
+#endif // BITCOIN_COMPAT_ENDIAN_H
diff --git a/src/crypto/common.h b/src/crypto/common.h
index 8b04b1f728..580c72f5a6 100644
--- a/src/crypto/common.h
+++ b/src/crypto/common.h
@@ -11,110 +11,56 @@
#include <stdint.h>
-#if defined(HAVE_ENDIAN_H)
-#include <endian.h>
-#endif
+#include "compat/endian.h"
+
+uint16_t static inline ReadLE16(const unsigned char* ptr)
+{
+ return le16toh(*((uint16_t*)ptr));
+}
uint32_t static inline ReadLE32(const unsigned char* ptr)
{
-#if HAVE_DECL_LE32TOH == 1
return le32toh(*((uint32_t*)ptr));
-#elif !defined(WORDS_BIGENDIAN)
- return *((uint32_t*)ptr);
-#else
- return ((uint32_t)ptr[3] << 24 | (uint32_t)ptr[2] << 16 | (uint32_t)ptr[1] << 8 | (uint32_t)ptr[0]);
-#endif
}
uint64_t static inline ReadLE64(const unsigned char* ptr)
{
-#if HAVE_DECL_LE64TOH == 1
return le64toh(*((uint64_t*)ptr));
-#elif !defined(WORDS_BIGENDIAN)
- return *((uint64_t*)ptr);
-#else
- return ((uint64_t)ptr[7] << 56 | (uint64_t)ptr[6] << 48 | (uint64_t)ptr[5] << 40 | (uint64_t)ptr[4] << 32 |
- (uint64_t)ptr[3] << 24 | (uint64_t)ptr[2] << 16 | (uint64_t)ptr[1] << 8 | (uint64_t)ptr[0]);
-#endif
+}
+
+void static inline WriteLE16(unsigned char* ptr, uint16_t x)
+{
+ *((uint16_t*)ptr) = htole16(x);
}
void static inline WriteLE32(unsigned char* ptr, uint32_t x)
{
-#if HAVE_DECL_HTOLE32 == 1
*((uint32_t*)ptr) = htole32(x);
-#elif !defined(WORDS_BIGENDIAN)
- *((uint32_t*)ptr) = x;
-#else
- ptr[3] = x >> 24;
- ptr[2] = x >> 16;
- ptr[1] = x >> 8;
- ptr[0] = x;
-#endif
}
void static inline WriteLE64(unsigned char* ptr, uint64_t x)
{
-#if HAVE_DECL_HTOLE64 == 1
*((uint64_t*)ptr) = htole64(x);
-#elif !defined(WORDS_BIGENDIAN)
- *((uint64_t*)ptr) = x;
-#else
- ptr[7] = x >> 56;
- ptr[6] = x >> 48;
- ptr[5] = x >> 40;
- ptr[4] = x >> 32;
- ptr[3] = x >> 24;
- ptr[2] = x >> 16;
- ptr[1] = x >> 8;
- ptr[0] = x;
-#endif
}
uint32_t static inline ReadBE32(const unsigned char* ptr)
{
-#if HAVE_DECL_BE32TOH == 1
return be32toh(*((uint32_t*)ptr));
-#else
- return ((uint32_t)ptr[0] << 24 | (uint32_t)ptr[1] << 16 | (uint32_t)ptr[2] << 8 | (uint32_t)ptr[3]);
-#endif
}
uint64_t static inline ReadBE64(const unsigned char* ptr)
{
-#if HAVE_DECL_BE64TOH == 1
return be64toh(*((uint64_t*)ptr));
-#else
- return ((uint64_t)ptr[0] << 56 | (uint64_t)ptr[1] << 48 | (uint64_t)ptr[2] << 40 | (uint64_t)ptr[3] << 32 |
- (uint64_t)ptr[4] << 24 | (uint64_t)ptr[5] << 16 | (uint64_t)ptr[6] << 8 | (uint64_t)ptr[7]);
-#endif
}
void static inline WriteBE32(unsigned char* ptr, uint32_t x)
{
-#if HAVE_DECL_HTOBE32 == 1
*((uint32_t*)ptr) = htobe32(x);
-#else
- ptr[0] = x >> 24;
- ptr[1] = x >> 16;
- ptr[2] = x >> 8;
- ptr[3] = x;
-#endif
}
void static inline WriteBE64(unsigned char* ptr, uint64_t x)
{
-#if HAVE_DECL_HTOBE64 == 1
*((uint64_t*)ptr) = htobe64(x);
-#else
- ptr[0] = x >> 56;
- ptr[1] = x >> 48;
- ptr[2] = x >> 40;
- ptr[3] = x >> 32;
- ptr[4] = x >> 24;
- ptr[5] = x >> 16;
- ptr[6] = x >> 8;
- ptr[7] = x;
-#endif
}
#endif // BITCOIN_CRYPTO_COMMON_H