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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [lto/] [lto-endian.h] - Rev 826
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/* Very simple endian-ness layer for LTO object file handling Copyright 2010 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC 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 General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ /* This header file provides a simple way to handle object files in another endian-ness than the host machine. This is necesarry to enable cross-compilation with LTO enabled. Targets that use the ELF binary object format do not need this (libelf already handles endian-ness) but for COFF and Mach-O the functions in this header are used in the minimal binary object reader/writer. For all functions in this header, the user is responsible for making sure that the memory accesses are valid. */ #ifndef GCC_LTO_ENDIAN_H #define GCC_LTO_ENDIAN_H #include <stdint.h> #include <inttypes.h> static inline uint16_t get_uint16_le (const unsigned char *ptr) { return ptr[0] | (ptr[1] << 8); } static inline uint32_t get_uint32_le (const unsigned char *ptr) { return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24); } static inline uint64_t get_uint64_le (const unsigned char *ptr_) { #define ptr (uint64_t) ptr_ return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24) | (ptr[4] << 32) | (ptr[5] << 40) | (ptr[6] << 48) | (ptr[7] << 56); #undef ptr } static inline uint16_t get_uint16_be (const unsigned char *ptr) { return ptr[1] | (ptr[2] << 8); } static inline uint32_t get_uint32_be (const unsigned char *ptr) { return ptr[3] | (ptr[2] << 8) | (ptr[1] << 16) | (ptr[0] << 24); } static inline uint64_t get_uint64_be (const unsigned char *ptr_) { #define ptr (uint64_t) ptr_ return ptr[7] | (ptr[6] << 8) | (ptr[5] << 16) | (ptr[4] << 24) | (ptr[3] << 32) | (ptr[2] << 40) | (ptr[1] << 48) | (ptr[0] << 56); #undef ptr } static inline void put_uint16_le (unsigned char *ptr, uint16_t data) { ptr[0] = data & 0xff; ptr[1] = (data >> 8) & 0xff; } static inline void put_uint32_le (unsigned char *ptr, uint32_t data) { ptr[0] = data & 0xff; ptr[1] = (data >> 8) & 0xff; ptr[2] = (data >> 16) & 0xff; ptr[3] = (data >> 24) & 0xff; } static inline void put_uint64_le (unsigned char *ptr, uint64_t data) { ptr[0] = data & 0xff; ptr[1] = (data >> 8) & 0xff; ptr[2] = (data >> 16) & 0xff; ptr[3] = (data >> 24) & 0xff; ptr[4] = (data >> 32) & 0xff; ptr[5] = (data >> 40) & 0xff; ptr[6] = (data >> 48) & 0xff; ptr[7] = (data >> 56) & 0xff; } static inline void put_uint16_be (unsigned char *ptr, uint16_t data) { ptr[1] = data & 0xff; ptr[0] = (data >> 8) & 0xff; } static inline void put_uint32_be (unsigned char *ptr, uint32_t data) { ptr[3] = data & 0xff; ptr[2] = (data >> 8) & 0xff; ptr[1] = (data >> 16) & 0xff; ptr[0] = (data >> 24) & 0xff; } static inline void put_uint64_be (unsigned char *ptr, uint64_t data) { ptr[7] = data & 0xff; ptr[6] = (data >> 8) & 0xff; ptr[5] = (data >> 16) & 0xff; ptr[4] = (data >> 24) & 0xff; ptr[3] = (data >> 32) & 0xff; ptr[2] = (data >> 40) & 0xff; ptr[1] = (data >> 48) & 0xff; ptr[0] = (data >> 56) & 0xff; } static inline void get_string (unsigned char *ptr, char *dest, size_t len) { memcpy (dest, ptr, len); } static inline void put_string (unsigned char *ptr, char *src, size_t len) { memcpy (ptr, src, len); } /* Use the target macro BYTES_BIG_ENDIAN to choose. */ static inline uint16_t get_uint16 (const unsigned char *ptr) { if (BYTES_BIG_ENDIAN) return get_uint16_be (ptr); else return get_uint16_le (ptr); } static inline uint32_t get_uint32 (const unsigned char *ptr) { if (BYTES_BIG_ENDIAN) return get_uint32_be (ptr); else return get_uint32_le (ptr); } static inline uint64_t get_uint64 (const unsigned char *ptr) { if (BYTES_BIG_ENDIAN) return get_uint64_be (ptr); else return get_uint64_le (ptr); } static inline void put_uint16 (unsigned char *ptr, uint16_t data) { if (BYTES_BIG_ENDIAN) put_uint16_be (ptr, data); else put_uint16_le (ptr, data); } static inline void put_uint32 (unsigned char *ptr, uint32_t data) { if (BYTES_BIG_ENDIAN) put_uint32_be (ptr, data); else put_uint32_le (ptr, data); } static inline void put_uint64 (unsigned char *ptr, uint64_t data) { if (BYTES_BIG_ENDIAN) put_uint64_be (ptr, data); else put_uint64_le (ptr, data); } #endif /* GCC_LTO_ENDIAN_H */