mirror of
https://github.com/SDL-Hercules-390/hyperion.git
synced 2026-04-13 23:45:37 +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.
89 lines
4.5 KiB
C
89 lines
4.5 KiB
C
/* CMPSC.H (c) Copyright "Fish" (David B. Trout), 2012-2014 */
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/* S/390 Compression Call Instruction Functions */
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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 _CMPSC_H_
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#define _CMPSC_H_ // Code to be compiled ONLY ONCE goes after here
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///////////////////////////////////////////////////////////////////////////////
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// Tweakable constants (i.e. "tuning knobs")...
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#define MIN_CDSS ( 1 ) // SA22-7208-01
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#define MAX_CDSS ( 5 ) // SA22-7208-01
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#define MAX_DICT_ENTRIES ( 1 << (8 + MAX_CDSS )) // SA22-7208-01
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#define MAX_SYMLEN ( 260 ) // SA22-7208-01
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#define MAX_CHILDREN ( 260 ) // SA22-7208-01
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#define MIN_CMPSC_CPU_AMT ( 1024 ) // 1K
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#define DEF_CMPSC_CPU_AMT ( 1024 * 1024 ) // 1MB
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#define MAX_CMPSC_CPU_AMT ( 1024 * 1024 * 1024 ) // 1GB
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#define CMPSC_INLINE INLINE // __inline
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#define CMPSC_FASTCALL ATTR_REGPARM( 3 ) // __fastcall
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#define CMPSC_EXPAND8 // (#define to enable expand-8 logic)
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#define CMPSC_SYMCACHE // (#define to enable symcache logic)
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#define CMPSC_SYMCACHE_SIZE ( 1024 * 32 ) // (must be < 64K)
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///////////////////////////////////////////////////////////////////////////////
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// Dictionary sizes in bytes by CDSS
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static const U32 g_nDictSize[ MAX_CDSS ]; // (table of dict sizes in bytes)
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///////////////////////////////////////////////////////////////////////////////
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// CMPSCBLK: Compression Call parameters block
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struct CMPSCBLK // CMPSC instruction control block
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{
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U64 nLen1; // First-Operand Length (DST)
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U64 nLen2; // Second-Operand Length (SRC)
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void* dbg; // Debugging context or NULL (opt)
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REGS* regs; // Pointer to register context (HERC)
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U64 pOp1; // First-Operand Address (DST)
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U64 pOp2; // Second-Operand Address (SRC)
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U64 pDict; // Dictionary-Origin (CMP/EXP)
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U32 nCPUAmt; // CPU determined processing limit (CC3)
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U16 stt; // Symbol-translation-table offset (0-511)
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U16 pic; // Program Interruption code (7,5,etc)
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U8 r1; // Operand-1 register number (HERC)
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U8 r2; // Operand-2 register number (HERC)
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U8 st; // Symbol-translation option (0/1)
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U8 f1; // Format-1 sibling descriptors flag (0/1)
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U8 cdss; // Compressed-data symbol size (1-5)
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U8 cbn; // Compressed-data bit number (0-7)
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U8 cc; // Condition-Code value (0-3)
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U8 zp; // Zero-pad operand-1 when done (pad)
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};
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typedef struct CMPSCBLK CMPSCBLK;
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///////////////////////////////////////////////////////////////////////////////
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#endif // _CMPSC_H_ // Place all 'ARCH_DEP' code after this statement
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///////////////////////////////////////////////////////////////////////////////
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// COMPRESSION CALL: Compress or Expand requested data
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//
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// pCMPSCBLK: ptr to Compression Call parameters block (CMPSCBLK)
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// Returns: TRUE/FALSE (success/failure)
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//
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///////////////////////////////////////////////////////////////////////////////
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extern U8 (CMPSC_FASTCALL ARCH_DEP( cmpsc_Expand ))( CMPSCBLK* pCMPSCBLK );
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extern U8 (CMPSC_FASTCALL ARCH_DEP( cmpsc_Compress))( CMPSCBLK* pCMPSCBLK );
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///////////////////////////////////////////////////////////////////////////////
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// Our's is the master header so we automatically #include all of our other
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// headers too so all modules just need to #include ours and not any others.
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#include "cmpscbit.h" // (Bit Extraction Macros)
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#include "cmpscmem.h" // (Memory Access Functions)
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#include "cmpscget.h" // (Get Next Index Functions)
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#include "cmpscput.h" // (Put Next Index Functions)
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#include "cmpscdct.h" // (Get Dictionary Entry Functions)
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#include "cmpscdbg.h" // (Debugging Functions)
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///////////////////////////////////////////////////////////////////////////////
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