mirror of
https://github.com/SDL-Hercules-390/hyperion.git
synced 2026-04-13 07:25:22 +02:00
d4a1b5e109
Original/legacy cmpsc.c implementation moved to altcmpsc.dll module. Refer to Release Notes and/or README.CMPSC documents for more details.
95 lines
3.2 KiB
C
95 lines
3.2 KiB
C
/* CMPSCBIT.H (c) Copyright "Fish" (David B. Trout), 2012-2014 */
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/* Compression Call Bit Extraction Macros */
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/* */
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/* Released under "The Q Public License Version 1" */
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/* (http://www.hercules-390.org/herclic.html) as modifications to */
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/* Hercules. */
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#ifndef _CMPSCBIT_H_
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#define _CMPSCBIT_H_
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/*********************************************************************\
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Masks for extracting bits from unsigned 64-bit value
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\*********************************************************************/
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// NOTE: for the benefit of non-mainframe people, mainframes are
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// big-endian and thus we count our bits from left to right.
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// (right justified)
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#define U8R1 0x01
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#define U8R2 0x03
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#define U8R3 0x07
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#define U8R4 0x0F
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#define U8R5 0x1F
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#define U8R6 0x3F
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#define U8R7 0x7F
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#define U8R8 0xFF
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#define U16R1 0x0001
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#define U16R2 0x0003
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#define U16R3 0x0007
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#define U16R4 0x000F
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#define U16R5 0x001F
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#define U16R6 0x003F
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#define U16R7 0x007F
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#define U16R8 0x00FF
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#define U16R9 0x01FF
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#define U16R10 0x03FF
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#define U16R11 0x07FF
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#define U16R12 0x0FFF
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#define U16R13 0x1FFF
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#define U16R14 0x3FFF
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#define U16R15 0x7FFF
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#define U16R16 0xFFFF
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// (left justified)
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#define U8L1 0x80
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#define U8L2 0xC0
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#define U8L3 0xE0
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#define U8L4 0xF0
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#define U8L5 0xF8
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#define U8L6 0xFC
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#define U8L7 0xFE
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#define U8L8 0xFF
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#define U16L1 0x8000
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#define U16L2 0xC000
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#define U16L3 0xE000
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#define U16L4 0xF000
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#define U16L5 0xF800
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#define U16L6 0xFC00
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#define U16L7 0xFE00
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#define U16L8 0xFF00
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#define U16L9 0xFF80
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#define U16L10 0xFFC0
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#define U16L11 0xFFE0
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#define U16L12 0xFFF0
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#define U16L13 0xFFF8
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#define U16L14 0xFFFC
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#define U16L15 0xFFFE
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#define U16L16 0xFFFF
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/*********************************************************************\
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Macros for extracting bits from unsigned 64-bit value
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\*********************************************************************/
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// NOTE: for the benefit of non-mainframe people, mainframes are
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// big-endian and thus we count our bits from left to right.
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#define U64BITSR( u64, start, len, mask ) (((u64) >> (64-(start+len ))) & mask)
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#define U64BITSL( u64, start, len, width, mask ) (((u64) >> (64-(start+width))) & mask)
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#define ECE_U8R( start, len ) ((U8) U64BITSR( ece, start, len, U8R ## len ))
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#define ECE_U16R( start, len ) ((U16) U64BITSR( ece, start, len, U16R ## len ))
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#define CCE_U8R( start, len ) ((U8) U64BITSR( cce, start, len, U8R ## len ))
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#define CCE_U16R( start, len ) ((U16) U64BITSR( cce, start, len, U16R ## len ))
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#define SD1_U8R( start, len ) ((U8) U64BITSR( sd1, start, len, U8R ## len ))
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#define CCE_U16L( start, len ) ((U16) U64BITSL( cce, start, len, 16, U16L ## len ))
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#define SD1_U16L( start, len ) ((U16) U64BITSL( sd1, start, len, 16, U16L ## len ))
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#endif // _CMPSCBIT_H_
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