125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
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/*++
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Copyright (c) 1993 Digital Equipment Corporation
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Copyright (c) 1993-2001 Microsoft Corporation
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Module Name:
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alpha_optable.h
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Abstract:
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Definitions for -
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Table of operations, their names and charactersitics
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Used by ntsd, windbg and acc's dissassembler
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Author:
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Miche Baker-Harvey (mbh) 10-Jan-1993
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Revision History:
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--*/
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#ifndef _ALPHA_OPTABLE_
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#define _ALPHA_OPTABLE_
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//
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// Each entry in the opTable is either for a
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// + function - one option on a particular opcode
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// + terminal opcode - an opcode without a function field
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// the above two can both appear directly in disassembly
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//
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// + non terminal opcode - an opcode with a function field:
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// these entries do not represent values which can be
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// executed directly: they require a function entry.
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//
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// + invalid opcode - this is an opcode reserved to digital
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//
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typedef enum ENTRY_TYPE {
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INVALID_ETYPE,
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NON_TERMINAL_ETYPE,
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TERMINAL_ETYPE,
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FUNCTION_ETYPE,
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NOT_AN_ETYPE
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} ENTRY_TYPE;
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#define NO_FUNC (ULONG)-1
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typedef ULONG (* PFOPPARSE)(PSTR, PSTR *, struct _OPTBLENTRY *, PULONG64);
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typedef struct _OPTBLENTRY {
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union {
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struct {
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PCHAR _pszName; // Name of the instruction
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PFOPPARSE _parsFunc; // Function to parse operands
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} s0; // functions and terminal opcodes
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struct {
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struct _OPTBLENTRY * _funcTable; // Describes funcs for opcode
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ULONG _funcTableSize; // Number of possible funcs
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} s1; // non-terminal opcodes
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} u;
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//
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// These fields describe the instruction
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//
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ULONG opCode; // Top 6 bits of a 32-bit alpha instr
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ULONG funcCode; // Function; meaning is opcode dependent
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ULONG iType; // type of the instr: branch, fp, mem...
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// values are ALPHA_* in alphaops.h
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ENTRY_TYPE eType; // type of this entry in the opTable
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} OPTBLENTRY, * POPTBLENTRY;
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//
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// MBH - hack workaround:
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// I tried to do this with nameless functions and structures;
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// it works just fine on ALPHA, but dies on 386, so use this
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// ugly hack instead.
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// The name "pszAlphaName" is used instead of the more obvious
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// "pszName" because other structures contain pszName.
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//
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#define pszAlphaName u.s0._pszName
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#define parsFunc u.s0._parsFunc
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#define funcTable u.s1._funcTable
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#define funcTableSize u.s1._funcTableSize
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POPTBLENTRY findNonTerminalEntry(ULONG);
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POPTBLENTRY findStringEntry(PSTR Str);
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POPTBLENTRY findOpCodeEntry(ULONG);
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char * findFuncName(POPTBLENTRY, ULONG);
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char * findFlagName(ULONG, ULONG);
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HRESULT opTableInit(void);
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//
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// This structure is used for the floating point flag names.
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//
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#define FPFLAGS_NOT_AN_ENTRY 0xffffffff
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typedef struct _FPFLAGS {
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ULONG flags; // the flags on the opcode
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PCHAR flagname; // the string mnemonic for the flags
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} FPFLAGS, * PFPFLAGS;
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#endif // _ALPHA_OPTABLE_
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