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| 1 /** |
| 2 * \file lzma/bcj.h |
| 3 * \brief Branch/Call/Jump conversion filters |
| 4 */ |
| 5 |
| 6 /* |
| 7 * Author: Lasse Collin |
| 8 * |
| 9 * This file has been put into the public domain. |
| 10 * You can do whatever you want with this file. |
| 11 * |
| 12 * See ../lzma.h for information about liblzma as a whole. |
| 13 */ |
| 14 |
| 15 #ifndef LZMA_H_INTERNAL |
| 16 # error Never include this file directly. Use <lzma.h> instead. |
| 17 #endif |
| 18 |
| 19 |
| 20 /* Filter IDs for lzma_filter.id */ |
| 21 |
| 22 #define LZMA_FILTER_X86 LZMA_VLI_C(0x04) |
| 23 /**< |
| 24 * Filter for x86 binaries |
| 25 */ |
| 26 |
| 27 #define LZMA_FILTER_POWERPC LZMA_VLI_C(0x05) |
| 28 /**< |
| 29 * Filter for Big endian PowerPC binaries |
| 30 */ |
| 31 |
| 32 #define LZMA_FILTER_IA64 LZMA_VLI_C(0x06) |
| 33 /**< |
| 34 * Filter for IA64 (Itanium) binaries. |
| 35 */ |
| 36 |
| 37 #define LZMA_FILTER_ARM LZMA_VLI_C(0x07) |
| 38 /**< |
| 39 * Filter for ARM binaries. |
| 40 */ |
| 41 |
| 42 #define LZMA_FILTER_ARMTHUMB LZMA_VLI_C(0x08) |
| 43 /**< |
| 44 * Filter for ARMThumb binaries. |
| 45 */ |
| 46 |
| 47 #define LZMA_FILTER_SPARC LZMA_VLI_C(0x09) |
| 48 /**< |
| 49 * Filter for SPARC binaries. |
| 50 */ |
| 51 |
| 52 |
| 53 /** |
| 54 * \brief Options for BCJ filters |
| 55 * |
| 56 * The BCJ filters never change the size of the data. Specifying options |
| 57 * for them is optional: if pointer to options is NULL, default value is |
| 58 * used. You probably never need to specify options to BCJ filters, so just |
| 59 * set the options pointer to NULL and be happy. |
| 60 * |
| 61 * If options with non-default values have been specified when encoding, |
| 62 * the same options must also be specified when decoding. |
| 63 * |
| 64 * \note At the moment, none of the BCJ filters support |
| 65 * LZMA_SYNC_FLUSH. If LZMA_SYNC_FLUSH is specified, |
| 66 * LZMA_OPTIONS_ERROR will be returned. If there is need, |
| 67 * partial support for LZMA_SYNC_FLUSH can be added in future. |
| 68 * Partial means that flushing would be possible only at |
| 69 * offsets that are multiple of 2, 4, or 16 depending on |
| 70 * the filter, except x86 which cannot be made to support |
| 71 * LZMA_SYNC_FLUSH predictably. |
| 72 */ |
| 73 typedef struct { |
| 74 /** |
| 75 * \brief Start offset for conversions |
| 76 * |
| 77 * This setting is useful only when the same filter is used |
| 78 * _separately_ for multiple sections of the same executable file, |
| 79 * and the sections contain cross-section branch/call/jump |
| 80 * instructions. In that case it is beneficial to set the start |
| 81 * offset of the non-first sections so that the relative addresses |
| 82 * of the cross-section branch/call/jump instructions will use the |
| 83 * same absolute addresses as in the first section. |
| 84 * |
| 85 * When the pointer to options is NULL, the default value (zero) |
| 86 * is used. |
| 87 */ |
| 88 uint32_t start_offset; |
| 89 |
| 90 } lzma_options_bcj; |
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