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/** * \file lzma/bcj.h * \brief Branch/Call/Jump conversion filters */ /* * Author: Lasse Collin * * This file has been put into the public domain. * You can do whatever you want with this file. * * See ../lzma.h for information about liblzma as a whole. */ #ifndef LZMA_H_INTERNAL # error Never include this file directly. Use <lzma.h> instead. #endif /* Filter IDs for lzma_filter.id */ #define LZMA_FILTER_X86 LZMA_VLI_C(0x04) /**< * Filter for x86 binaries */ #define LZMA_FILTER_POWERPC LZMA_VLI_C(0x05) /**< * Filter for Big endian PowerPC binaries */ #define LZMA_FILTER_IA64 LZMA_VLI_C(0x06) /**< * Filter for IA-64 (Itanium) binaries. */ #define LZMA_FILTER_ARM LZMA_VLI_C(0x07) /**< * Filter for ARM binaries. */ #define LZMA_FILTER_ARMTHUMB LZMA_VLI_C(0x08) /**< * Filter for ARM-Thumb binaries. */ #define LZMA_FILTER_SPARC LZMA_VLI_C(0x09) /**< * Filter for SPARC binaries. */ /** * \brief Options for BCJ filters * * The BCJ filters never change the size of the data. Specifying options * for them is optional: if pointer to options is NULL, default value is * used. You probably never need to specify options to BCJ filters, so just * set the options pointer to NULL and be happy. * * If options with non-default values have been specified when encoding, * the same options must also be specified when decoding. * * \note At the moment, none of the BCJ filters support * LZMA_SYNC_FLUSH. If LZMA_SYNC_FLUSH is specified, * LZMA_OPTIONS_ERROR will be returned. If there is need, * partial support for LZMA_SYNC_FLUSH can be added in future. * Partial means that flushing would be possible only at * offsets that are multiple of 2, 4, or 16 depending on * the filter, except x86 which cannot be made to support * LZMA_SYNC_FLUSH predictably. */ typedef struct { /** * \brief Start offset for conversions * * This setting is useful only when the same filter is used * _separately_ for multiple sections of the same executable file, * and the sections contain cross-section branch/call/jump * instructions. In that case it is beneficial to set the start * offset of the non-first sections so that the relative addresses * of the cross-section branch/call/jump instructions will use the * same absolute addresses as in the first section. * * When the pointer to options is NULL, the default value (zero) * is used. */ uint32_t start_offset; } lzma_options_bcj;