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718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* Bra.h -- Branch converters for executables
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2013-01-18 : Igor Pavlov : Public domain */
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#ifndef __BRA_H
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#define __BRA_H
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#include "7zTypes.h"
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EXTERN_C_BEGIN
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/*
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These functions convert relative addresses to absolute addresses
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in CALL instructions to increase the compression ratio.
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In:
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data - data buffer
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size - size of data
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ip - current virtual Instruction Pinter (IP) value
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state - state variable for x86 converter
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encoding - 0 (for decoding), 1 (for encoding)
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Out:
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state - state variable for x86 converter
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Returns:
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The number of processed bytes. If you call these functions with multiple calls,
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you must start next call with first byte after block of processed bytes.
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Type Endian Alignment LookAhead
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x86 little 1 4
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ARMT little 2 2
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ARM little 4 0
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PPC big 4 0
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SPARC big 4 0
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IA64 little 16 0
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size must be >= Alignment + LookAhead, if it's not last block.
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If (size < Alignment + LookAhead), converter returns 0.
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Example:
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UInt32 ip = 0;
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for ()
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{
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; size must be >= Alignment + LookAhead, if it's not last block
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SizeT processed = Convert(data, size, ip, 1);
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data += processed;
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size -= processed;
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ip += processed;
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}
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*/
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#define x86_Convert_Init(state) { state = 0; }
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SizeT x86_Convert(Byte *data, SizeT size, UInt32 ip, UInt32 *state, int encoding);
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SizeT ARM_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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SizeT ARMT_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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SizeT PPC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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SizeT SPARC_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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SizeT IA64_Convert(Byte *data, SizeT size, UInt32 ip, int encoding);
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EXTERN_C_END
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#endif
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