| repo sync | baa3858 | 2013-07-26 17:53:31 -0700 | [diff] [blame] | 1 | /* Bra.h -- Branch converters for executables
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| 2 | 2009-02-07 : Igor Pavlov : Public domain */
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| 3 |
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| 4 | #ifndef __BRA_H
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| 5 | #define __BRA_H
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| 6 |
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| 7 | #include "Types.h"
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| 8 |
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| 9 | #ifdef __cplusplus
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| 10 | extern "C" {
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| 11 | #endif
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| 12 |
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| 13 | /*
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| 14 | These functions convert relative addresses to absolute addresses
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| 15 | in CALL instructions to increase the compression ratio.
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| 16 |
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| 17 | In:
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| 18 | data - data buffer
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| 19 | size - size of data
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| 20 | ip - current virtual Instruction Pinter (IP) value
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| 21 | state - state variable for x86 converter
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| 22 | encoding - 0 (for decoding), 1 (for encoding)
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| 23 |
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| 24 | Out:
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| 25 | state - state variable for x86 converter
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| 26 |
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| 27 | Returns:
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| 28 | The number of processed bytes. If you call these functions with multiple calls,
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| 29 | you must start next call with first byte after block of processed bytes.
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| 30 |
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| 31 | Type Endian Alignment LookAhead
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| 32 |
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| 33 | x86 little 1 4
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| 34 | ARMT little 2 2
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| 35 | ARM little 4 0
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| 36 | PPC big 4 0
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| 37 | SPARC big 4 0
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| 38 | IA64 little 16 0
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| 39 |
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| 40 | size must be >= Alignment + LookAhead, if it's not last block.
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| 41 | If (size < Alignment + LookAhead), converter returns 0.
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| 42 |
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| 43 | Example:
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| 44 |
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| 45 | UInt32 ip = 0;
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| 46 | for ()
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| 47 | {
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| 48 | ; size must be >= Alignment + LookAhead, if it's not last block
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| 49 | SizeT processed = Convert(data, size, ip, 1);
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| 50 | data += processed;
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| 51 | size -= processed;
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| 52 | ip += processed;
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| 53 | }
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| 54 | */
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| 55 |
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| 56 | #define x86_Convert_Init(state) { state = 0; }
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| 57 | SizeT x86_Convert(Byte *data, SizeT size, UInt32 ip, UInt32 *state, int encoding);
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| 58 | SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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| 59 | SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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| 60 | SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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| 61 | SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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| 62 | SizeT IA64_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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| 63 |
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| 64 | #ifdef __cplusplus
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| 65 | }
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| 66 | #endif
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| 67 |
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| 68 | #endif
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