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