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
This commit is contained in:
Wladimir J. van der Laan
parent
51377c2dbe
commit
4414f5ffe1
13
configure.ac
13
configure.ac
@ -350,8 +350,8 @@ if test x$use_lcov = xyes; then
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[AC_MSG_ERROR("lcov testing requested but --coverage flag does not work")])
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fi
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dnl Require little endian
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AC_C_BIGENDIAN([AC_MSG_ERROR("Big Endian not supported")])
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dnl Check for endianness
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AC_C_BIGENDIAN
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dnl Check for pthread compile/link requirements
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AX_PTHREAD
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@ -438,17 +438,22 @@ if test x$TARGET_OS = xdarwin; then
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AX_CHECK_LINK_FLAG([[-Wl,-dead_strip]], [LDFLAGS="$LDFLAGS -Wl,-dead_strip"])
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fi
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AC_CHECK_HEADERS([endian.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h])
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AC_CHECK_HEADERS([endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h])
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AC_SEARCH_LIBS([getaddrinfo_a], [anl], [AC_DEFINE(HAVE_GETADDRINFO_A, 1, [Define this symbol if you have getaddrinfo_a])])
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AC_SEARCH_LIBS([inet_pton], [nsl resolv], [AC_DEFINE(HAVE_INET_PTON, 1, [Define this symbol if you have inet_pton])])
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AC_CHECK_DECLS([strnlen])
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AC_CHECK_DECLS([le32toh, le64toh, htole32, htole64, be32toh, be64toh, htobe32, htobe64],,,
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AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
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[#if HAVE_ENDIAN_H
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#include <endian.h>
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#endif])
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AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64],,,
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[#if HAVE_BYTESWAP_H
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#include <byteswap.h>
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#endif])
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dnl Check for MSG_NOSIGNAL
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AC_MSG_CHECKING(for MSG_NOSIGNAL)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
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@ -141,6 +141,8 @@ BITCOIN_CORE_H = \
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walletdb.h \
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wallet.h \
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wallet_ismine.h \
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compat/byteswap.h \
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compat/endian.h \
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compat/sanity.h
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JSON_H = \
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47
src/compat/byteswap.h
Normal file
47
src/compat/byteswap.h
Normal file
@ -0,0 +1,47 @@
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// Copyright (c) 2014 The Bitcoin developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_COMPAT_BYTESWAP_H
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#define BITCOIN_COMPAT_BYTESWAP_H
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#if defined(HAVE_CONFIG_H)
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#include "config/bitcoin-config.h"
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#endif
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#include <stdint.h>
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#if defined(HAVE_BYTESWAP_H)
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#include <byteswap.h>
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#endif
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#if HAVE_DECL_BSWAP_16 == 0
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inline uint16_t bswap_16(uint16_t x)
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{
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return (x >> 8) | ((x & 0x00ff) << 8);
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}
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#endif // HAVE_DECL_BSWAP16
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#if HAVE_DECL_BSWAP_32 == 0
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inline uint32_t bswap_32(uint32_t x)
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{
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return (((x & 0xff000000U) >> 24) | ((x & 0x00ff0000U) >> 8) |
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((x & 0x0000ff00U) << 8) | ((x & 0x000000ffU) << 24));
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}
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#endif // HAVE_DECL_BSWAP32
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#if HAVE_DECL_BSWAP_64 == 0
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inline uint64_t bswap_64(uint64_t x)
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{
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return (((x & 0xff00000000000000ull) >> 56)
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| ((x & 0x00ff000000000000ull) >> 40)
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| ((x & 0x0000ff0000000000ull) >> 24)
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| ((x & 0x000000ff00000000ull) >> 8)
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| ((x & 0x00000000ff000000ull) << 8)
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| ((x & 0x0000000000ff0000ull) << 24)
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| ((x & 0x000000000000ff00ull) << 40)
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| ((x & 0x00000000000000ffull) << 56));
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}
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#endif // HAVE_DECL_BSWAP64
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#endif // BITCOIN_COMPAT_BYTESWAP_H
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194
src/compat/endian.h
Normal file
194
src/compat/endian.h
Normal file
@ -0,0 +1,194 @@
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// Copyright (c) 2014 The Bitcoin developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_COMPAT_ENDIAN_H
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#define BITCOIN_COMPAT_ENDIAN_H
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#if defined(HAVE_CONFIG_H)
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#include "config/bitcoin-config.h"
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#endif
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#include <stdint.h>
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#include "compat/byteswap.h"
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#if defined(HAVE_ENDIAN_H)
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#include <endian.h>
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#endif
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#if defined(WORDS_BIGENDIAN)
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#if HAVE_DECL_HTOBE16 == 0
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inline uint16_t htobe16(uint16_t host_16bits)
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{
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return host_16bits;
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}
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#endif // HAVE_DECL_HTOBE16
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#if HAVE_DECL_HTOLE16 == 0
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inline uint16_t htole16(uint16_t host_16bits)
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{
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return bswap_16(host_16bits);
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}
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#endif // HAVE_DECL_HTOLE16
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#if HAVE_DECL_BE16TOH == 0
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inline uint16_t be16toh(uint16_t big_endian_16bits)
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{
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return big_endian_16bits;
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}
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#endif // HAVE_DECL_BE16TOH
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#if HAVE_DECL_LE16TOH == 0
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inline uint16_t le16toh(uint16_t little_endian_16bits)
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{
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return bswap_16(little_endian_16bits);
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}
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#endif // HAVE_DECL_LE16TOH
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#if HAVE_DECL_HTOBE32 == 0
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inline uint32_t htobe32(uint32_t host_32bits)
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{
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return host_32bits;
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}
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#endif // HAVE_DECL_HTOBE32
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#if HAVE_DECL_HTOLE32 == 0
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inline uint32_t htole32(uint32_t host_32bits)
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{
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return bswap_32(host_32bits);
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}
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#endif // HAVE_DECL_HTOLE32
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#if HAVE_DECL_BE32TOH == 0
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inline uint32_t be32toh(uint32_t big_endian_32bits)
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{
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return big_endian_32bits;
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}
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#endif // HAVE_DECL_BE32TOH
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#if HAVE_DECL_LE32TOH == 0
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inline uint32_t le32toh(uint32_t little_endian_32bits)
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{
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return bswap_32(little_endian_32bits);
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}
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#endif // HAVE_DECL_LE32TOH
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#if HAVE_DECL_HTOBE64 == 0
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inline uint64_t htobe64(uint64_t host_64bits)
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{
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return host_64bits;
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}
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#endif // HAVE_DECL_HTOBE64
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#if HAVE_DECL_HTOLE64 == 0
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inline uint64_t htole64(uint64_t host_64bits)
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{
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return bswap_64(host_64bits);
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}
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#endif // HAVE_DECL_HTOLE64
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#if HAVE_DECL_BE64TOH == 0
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inline uint64_t be64toh(uint64_t big_endian_64bits)
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{
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return big_endian_64bits;
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}
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#endif // HAVE_DECL_BE64TOH
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#if HAVE_DECL_LE64TOH == 0
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inline uint64_t le64toh(uint64_t little_endian_64bits)
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{
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return bswap_64(little_endian_64bits);
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}
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#endif // HAVE_DECL_LE64TOH
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#else // WORDS_BIGENDIAN
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#if HAVE_DECL_HTOBE16 == 0
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inline uint16_t htobe16(uint16_t host_16bits)
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{
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return bswap_16(host_16bits);
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}
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#endif // HAVE_DECL_HTOBE16
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#if HAVE_DECL_HTOLE16 == 0
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inline uint16_t htole16(uint16_t host_16bits)
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{
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return host_16bits;
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}
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#endif // HAVE_DECL_HTOLE16
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#if HAVE_DECL_BE16TOH == 0
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inline uint16_t be16toh(uint16_t big_endian_16bits)
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{
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return bswap_16(big_endian_16bits);
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}
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#endif // HAVE_DECL_BE16TOH
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#if HAVE_DECL_LE16TOH == 0
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inline uint16_t le16toh(uint16_t little_endian_16bits)
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{
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return little_endian_16bits;
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}
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#endif // HAVE_DECL_LE16TOH
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#if HAVE_DECL_HTOBE32 == 0
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inline uint32_t htobe32(uint32_t host_32bits)
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{
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return bswap_32(host_32bits);
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}
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#endif // HAVE_DECL_HTOBE32
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#if HAVE_DECL_HTOLE32 == 0
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inline uint32_t htole32(uint32_t host_32bits)
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{
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return host_32bits;
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}
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#endif // HAVE_DECL_HTOLE32
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#if HAVE_DECL_BE32TOH == 0
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inline uint32_t be32toh(uint32_t big_endian_32bits)
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{
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return bswap_32(big_endian_32bits);
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}
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#endif // HAVE_DECL_BE32TOH
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#if HAVE_DECL_LE32TOH == 0
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inline uint32_t le32toh(uint32_t little_endian_32bits)
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{
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return little_endian_32bits;
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}
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#endif // HAVE_DECL_LE32TOH
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#if HAVE_DECL_HTOBE64 == 0
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inline uint64_t htobe64(uint64_t host_64bits)
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{
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return bswap_64(host_64bits);
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}
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#endif // HAVE_DECL_HTOBE64
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#if HAVE_DECL_HTOLE64 == 0
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inline uint64_t htole64(uint64_t host_64bits)
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{
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return host_64bits;
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}
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#endif // HAVE_DECL_HTOLE64
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#if HAVE_DECL_BE64TOH == 0
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inline uint64_t be64toh(uint64_t big_endian_64bits)
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{
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return bswap_64(big_endian_64bits);
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}
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#endif // HAVE_DECL_BE64TOH
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#if HAVE_DECL_LE64TOH == 0
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inline uint64_t le64toh(uint64_t little_endian_64bits)
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{
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return little_endian_64bits;
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}
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#endif // HAVE_DECL_LE64TOH
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#endif // WORDS_BIGENDIAN
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#endif // BITCOIN_COMPAT_ENDIAN_H
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@ -11,110 +11,56 @@
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#include <stdint.h>
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#if defined(HAVE_ENDIAN_H)
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#include <endian.h>
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#endif
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#include "compat/endian.h"
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uint16_t static inline ReadLE16(const unsigned char* ptr)
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{
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return le16toh(*((uint16_t*)ptr));
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}
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uint32_t static inline ReadLE32(const unsigned char* ptr)
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{
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#if HAVE_DECL_LE32TOH == 1
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return le32toh(*((uint32_t*)ptr));
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#elif !defined(WORDS_BIGENDIAN)
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return *((uint32_t*)ptr);
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#else
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return ((uint32_t)ptr[3] << 24 | (uint32_t)ptr[2] << 16 | (uint32_t)ptr[1] << 8 | (uint32_t)ptr[0]);
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#endif
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}
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uint64_t static inline ReadLE64(const unsigned char* ptr)
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{
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#if HAVE_DECL_LE64TOH == 1
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return le64toh(*((uint64_t*)ptr));
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#elif !defined(WORDS_BIGENDIAN)
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return *((uint64_t*)ptr);
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#else
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return ((uint64_t)ptr[7] << 56 | (uint64_t)ptr[6] << 48 | (uint64_t)ptr[5] << 40 | (uint64_t)ptr[4] << 32 |
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(uint64_t)ptr[3] << 24 | (uint64_t)ptr[2] << 16 | (uint64_t)ptr[1] << 8 | (uint64_t)ptr[0]);
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#endif
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}
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void static inline WriteLE16(unsigned char* ptr, uint16_t x)
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{
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*((uint16_t*)ptr) = htole16(x);
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}
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void static inline WriteLE32(unsigned char* ptr, uint32_t x)
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{
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#if HAVE_DECL_HTOLE32 == 1
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*((uint32_t*)ptr) = htole32(x);
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#elif !defined(WORDS_BIGENDIAN)
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*((uint32_t*)ptr) = x;
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#else
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ptr[3] = x >> 24;
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ptr[2] = x >> 16;
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ptr[1] = x >> 8;
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ptr[0] = x;
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#endif
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}
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void static inline WriteLE64(unsigned char* ptr, uint64_t x)
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{
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#if HAVE_DECL_HTOLE64 == 1
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*((uint64_t*)ptr) = htole64(x);
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#elif !defined(WORDS_BIGENDIAN)
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*((uint64_t*)ptr) = x;
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#else
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ptr[7] = x >> 56;
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ptr[6] = x >> 48;
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ptr[5] = x >> 40;
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ptr[4] = x >> 32;
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ptr[3] = x >> 24;
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ptr[2] = x >> 16;
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ptr[1] = x >> 8;
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ptr[0] = x;
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#endif
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}
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uint32_t static inline ReadBE32(const unsigned char* ptr)
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{
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#if HAVE_DECL_BE32TOH == 1
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return be32toh(*((uint32_t*)ptr));
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#else
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return ((uint32_t)ptr[0] << 24 | (uint32_t)ptr[1] << 16 | (uint32_t)ptr[2] << 8 | (uint32_t)ptr[3]);
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#endif
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}
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uint64_t static inline ReadBE64(const unsigned char* ptr)
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{
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#if HAVE_DECL_BE64TOH == 1
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return be64toh(*((uint64_t*)ptr));
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#else
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return ((uint64_t)ptr[0] << 56 | (uint64_t)ptr[1] << 48 | (uint64_t)ptr[2] << 40 | (uint64_t)ptr[3] << 32 |
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(uint64_t)ptr[4] << 24 | (uint64_t)ptr[5] << 16 | (uint64_t)ptr[6] << 8 | (uint64_t)ptr[7]);
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#endif
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}
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void static inline WriteBE32(unsigned char* ptr, uint32_t x)
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{
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#if HAVE_DECL_HTOBE32 == 1
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*((uint32_t*)ptr) = htobe32(x);
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#else
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ptr[0] = x >> 24;
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ptr[1] = x >> 16;
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ptr[2] = x >> 8;
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ptr[3] = x;
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#endif
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}
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void static inline WriteBE64(unsigned char* ptr, uint64_t x)
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{
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#if HAVE_DECL_HTOBE64 == 1
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*((uint64_t*)ptr) = htobe64(x);
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#else
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ptr[0] = x >> 56;
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ptr[1] = x >> 48;
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ptr[2] = x >> 40;
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ptr[3] = x >> 32;
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ptr[4] = x >> 24;
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ptr[5] = x >> 16;
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ptr[6] = x >> 8;
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ptr[7] = x;
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#endif
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}
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#endif // BITCOIN_CRYPTO_COMMON_H
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