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