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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1186 | savelij | 1 | /* codez8000.c */ |
| 2 | /*****************************************************************************/ |
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| 3 | /* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only */ |
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| 4 | /* */ |
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| 5 | /* AS-Portierung */ |
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| 6 | /* */ |
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| 7 | /* Codegenerator Zilog Z8000 */ |
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| 8 | /* */ |
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| 9 | /*****************************************************************************/ |
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| 10 | |||
| 11 | #include "stdinc.h" |
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| 12 | #include <string.h> |
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| 13 | #include <stdarg.h> |
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| 14 | #include <ctype.h> |
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| 15 | |||
| 16 | #include "cpulist.h" |
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| 17 | #include "headids.h" |
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| 18 | #include "strutil.h" |
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| 19 | #include "intformat.h" |
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| 20 | #include "bpemu.h" |
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| 21 | #include "asmdef.h" |
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| 22 | #include "asmsub.h" |
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| 23 | #include "asmpars.h" |
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| 24 | #include "asmallg.h" |
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| 25 | #include "onoff_common.h" |
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| 26 | #include "asmitree.h" |
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| 27 | #include "asmstructs.h" |
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| 28 | #include "codepseudo.h" |
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| 29 | #include "codevars.h" |
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| 30 | #include "intpseudo.h" |
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| 31 | #include "operator.h" |
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| 32 | |||
| 33 | #include "codez8000.h" |
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| 34 | |||
| 35 | typedef enum |
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| 36 | { |
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| 37 | eCoreNone = 0, |
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| 38 | eCoreZ8001 = 1, |
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| 39 | eCoreZ8003 = 2 |
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| 40 | } tCore; |
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| 41 | |||
| 42 | typedef struct |
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| 43 | { |
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| 44 | const char *pName; |
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| 45 | tCore Core; |
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| 46 | Boolean SuppSegmented; |
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| 47 | } tCPUProps; |
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| 48 | |||
| 49 | typedef enum eAdrMode |
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| 50 | { |
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| 51 | eModNone = 0, |
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| 52 | eModReg = 1, |
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| 53 | eModIReg = 2, |
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| 54 | eModDirect = 3, |
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| 55 | eModIndexed = 4, |
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| 56 | eModBaseAddress = 5, |
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| 57 | eModBaseIndexed = 6, |
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| 58 | eModImm = 7, |
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| 59 | eModCtl = 8 |
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| 60 | } tAdrMode; |
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| 61 | |||
| 62 | #define MModReg (1 << eModReg) |
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| 63 | #define MModIReg (1 << eModIReg) |
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| 64 | #define MModDirect (1 << eModDirect) |
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| 65 | #define MModIndexed (1 << eModIndexed) |
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| 66 | #define MModBaseAddress (1 << eModBaseAddress) |
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| 67 | #define MModBaseIndexed (1 << eModBaseIndexed) |
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| 68 | #define MModImm (1 << eModImm) |
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| 69 | #define MModCtl (1 << eModCtl) |
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| 70 | |||
| 71 | #define MModIO (1 << 15) |
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| 72 | |||
| 73 | #define MModNoImm (MModReg | MModIReg | MModDirect | MModIndexed | MModBaseAddress | MModBaseIndexed) |
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| 74 | #define MModAll (MModNoImm | MModImm) |
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| 75 | |||
| 76 | #define eSymbolSize4Bit ((tSymbolSize)-2) |
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| 77 | #define eSymbolSize3Bit ((tSymbolSize)-3) |
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| 78 | |||
| 79 | typedef struct |
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| 80 | { |
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| 81 | tAdrMode Mode; |
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| 82 | unsigned Cnt; |
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| 83 | Word Val, Vals[3]; |
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| 84 | } tAdrVals; |
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| 85 | |||
| 86 | typedef struct |
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| 87 | { |
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| 88 | Word Code; |
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| 89 | Boolean Privileged; |
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| 90 | } FixedOrder; |
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| 91 | |||
| 92 | typedef enum |
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| 93 | { |
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| 94 | ePrivileged = 1 << 0, |
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| 95 | eSegMode = 1 << 1, |
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| 96 | eNonSegMode = 1 << 2 |
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| 97 | } tCtlFlags; |
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| 98 | |||
| 99 | typedef struct |
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| 100 | { |
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| 101 | const char *pName; |
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| 102 | Word Code; |
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| 103 | tCtlFlags Flags; |
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| 104 | tSymbolSize Size; |
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| 105 | } tCtlReg; |
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| 106 | |||
| 107 | typedef struct |
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| 108 | { |
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| 109 | const char *pName; |
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| 110 | Word Code; |
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| 111 | } tCondition; |
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| 112 | |||
| 113 | /* Auto-optimization of LD #imm4,Rn -> LDK disabled for the moment, |
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| 114 | until we find a syntax to control it: */ |
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| 115 | |||
| 116 | #define OPT_LD_LDK 0 |
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| 117 | |||
| 118 | static const tCPUProps *pCurrCPUProps; |
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| 119 | |||
| 120 | static FixedOrder *FixedOrders; |
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| 121 | static tCtlReg *CtlRegs; |
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| 122 | static tCondition *Conditions; |
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| 123 | static int CtlRegCnt; |
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| 124 | |||
| 125 | static tSymbolSize OpSize; |
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| 126 | static ShortInt ImmOpSize; |
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| 127 | static IntType MemIntType; |
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| 128 | |||
| 129 | static LongInt AMDSyntax; |
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| 130 | |||
| 131 | #ifdef __cplusplus |
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| 132 | #include "codez8000.hpp" |
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| 133 | #endif |
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| 134 | |||
| 135 | /*--------------------------------------------------------------------------*/ |
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| 136 | /* Helper Functions */ |
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| 137 | |||
| 138 | /*!------------------------------------------------------------------------ |
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| 139 | * \fn CheckSup(Boolean Required) |
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| 140 | * \brief check whether supervisor mode requirement and complain if violated |
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| 141 | * \param Required is supervisor mode required? |
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| 142 | * \return False if violated |
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| 143 | * ------------------------------------------------------------------------ */ |
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| 144 | |||
| 145 | static Boolean CheckSup(Boolean Required) |
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| 146 | { |
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| 147 | if (!SupAllowed && Required) |
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| 148 | { |
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| 149 | WrStrErrorPos(ErrNum_PrivOrder, &OpPart); |
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| 150 | return False; |
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| 151 | } |
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| 152 | return True; |
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| 153 | } |
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| 154 | |||
| 155 | /*!------------------------------------------------------------------------ |
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| 156 | * \fn Segmented(void) |
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| 157 | * \brief operating in segmented mode? |
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| 158 | * \return True if yes |
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| 159 | * ------------------------------------------------------------------------ */ |
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| 160 | |||
| 161 | static Boolean Segmented(void) |
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| 162 | { |
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| 163 | return pCurrCPUProps->SuppSegmented; |
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| 164 | } |
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| 165 | |||
| 166 | /*!------------------------------------------------------------------------ |
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| 167 | * \fn AddrRegSize(void) |
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| 168 | * \brief return size of address register |
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| 169 | * \return 16 or 32 bit |
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| 170 | * ------------------------------------------------------------------------ */ |
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| 171 | |||
| 172 | static tSymbolSize AddrRegSize(void) |
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| 173 | { |
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| 174 | return Segmented() ? eSymbolSize32Bit : eSymbolSize16Bit; |
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| 175 | } |
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| 176 | |||
| 177 | /*!------------------------------------------------------------------------ |
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| 178 | * \fn GetSegment(LongWord Address) |
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| 179 | * \brief extract segment from (linear) address |
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| 180 | * \param Address (linear) address |
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| 181 | * \return segment |
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| 182 | * ------------------------------------------------------------------------ */ |
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| 183 | |||
| 184 | static Word GetSegment(LongWord Address) |
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| 185 | { |
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| 186 | return (Address >> 16) & 0x7f; |
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| 187 | } |
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| 188 | |||
| 189 | /*--------------------------------------------------------------------------*/ |
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| 190 | /* Register Handling */ |
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| 191 | |||
| 192 | /*!------------------------------------------------------------------------ |
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| 193 | * \fn DecodeRegCore(const char *pArg, Word *pValue, tSymbolSize *pSize) |
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| 194 | * \brief check whether argument describes a CPU (general purpose) register |
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| 195 | * \param pArg source argument |
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| 196 | * \param pValue register number if yes |
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| 197 | * \param pSize register size if yes |
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| 198 | * \return True if it is |
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| 199 | * ------------------------------------------------------------------------ */ |
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| 200 | |||
| 201 | static Boolean DecodeRegCore(const char *pArg, Word *pValue, tSymbolSize *pSize) |
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| 202 | { |
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| 203 | Word Offset = 0, MaskVal, MaxVal; |
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| 204 | |||
| 205 | if (as_toupper(*pArg) != 'R') |
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| 206 | return False; |
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| 207 | pArg++; |
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| 208 | |||
| 209 | switch (as_toupper(*pArg)) |
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| 210 | { |
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| 211 | case 'H': |
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| 212 | *pSize = eSymbolSize8Bit; |
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| 213 | MaskVal = 0; MaxVal = 7; |
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| 214 | pArg++; |
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| 215 | goto Num; |
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| 216 | case 'L': |
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| 217 | *pSize = eSymbolSize8Bit; |
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| 218 | Offset = 8; |
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| 219 | MaskVal = 0; MaxVal = 15; |
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| 220 | pArg++; |
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| 221 | goto Num; |
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| 222 | case 'R': |
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| 223 | *pSize = eSymbolSize32Bit; |
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| 224 | MaskVal = 1; MaxVal = 15; |
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| 225 | pArg++; |
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| 226 | goto Num; |
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| 227 | case 'Q': |
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| 228 | *pSize = eSymbolSize64Bit; |
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| 229 | MaskVal = 3; MaxVal = 15; |
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| 230 | pArg++; |
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| 231 | goto Num; |
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| 232 | default: |
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| 233 | *pSize = eSymbolSize16Bit; |
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| 234 | MaskVal = 0; MaxVal = 15; |
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| 235 | /* fall-thru */ |
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| 236 | Num: |
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| 237 | { |
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| 238 | char *pEnd; |
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| 239 | |||
| 240 | *pValue = strtoul(pArg, &pEnd, 10) + Offset; |
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| 241 | return !*pEnd && (*pValue <= MaxVal) && !(*pValue & MaskVal); |
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| 242 | } |
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| 243 | } |
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| 244 | } |
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| 245 | |||
| 246 | /*!------------------------------------------------------------------------ |
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| 247 | * \fn DissectReg_Z8000(char *pDest, size_t DestSize, tRegInt Value, tSymbolSize InpSize) |
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| 248 | * \brief dissect register symbols - Z8000 variant |
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| 249 | * \param pDest destination buffer |
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| 250 | * \param DestSize destination buffer size |
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| 251 | * \param Value numeric register value |
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| 252 | * \param InpSize register size |
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| 253 | * ------------------------------------------------------------------------ */ |
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| 254 | |||
| 255 | static void DissectReg_Z8000(char *pDest, size_t DestSize, tRegInt Value, tSymbolSize InpSize) |
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| 256 | { |
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| 257 | switch (InpSize) |
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| 258 | { |
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| 259 | case eSymbolSize8Bit: |
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| 260 | as_snprintf(pDest, DestSize, "R%c%u", "HL"[(Value >> 3) & 1], (unsigned)(Value & 7)); |
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| 261 | break; |
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| 262 | case eSymbolSize16Bit: |
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| 263 | as_snprintf(pDest, DestSize, "R%u", (unsigned)Value); |
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| 264 | break; |
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| 265 | case eSymbolSize32Bit: |
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| 266 | as_snprintf(pDest, DestSize, "RR%u", (unsigned)Value); |
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| 267 | break; |
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| 268 | case eSymbolSize64Bit: |
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| 269 | as_snprintf(pDest, DestSize, "RQ%u", (unsigned)Value); |
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| 270 | break; |
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| 271 | default: |
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| 272 | as_snprintf(pDest, DestSize, "%d-%u", (int)InpSize, (unsigned)Value); |
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| 273 | } |
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| 274 | } |
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| 275 | |||
| 276 | /*!------------------------------------------------------------------------ |
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| 277 | * \fn ChkRegOverlap(Word FirstReg, int FirstSize, ...) |
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| 278 | * \brief check for register overlap |
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| 279 | * \param FirstReg first register # |
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| 280 | * \param FirstSize first register size |
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| 281 | * \param ... further num/size pairs |
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| 282 | * \return -1 if no overlap, otherwise index of first conflicting register |
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| 283 | * ------------------------------------------------------------------------ */ |
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| 284 | |||
| 285 | static int ChkRegOverlap(Word FirstReg, int FirstSize, ...) |
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| 286 | { |
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| 287 | LongWord RegUse = 0, ThisUse; |
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| 288 | int Index = 0; |
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| 289 | va_list ap; |
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| 290 | |||
| 291 | va_start(ap, FirstSize); |
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| 292 | while (True) |
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| 293 | { |
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| 294 | switch (FirstSize) |
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| 295 | { |
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| 296 | case eSymbolSize8Bit: |
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| 297 | ThisUse = ((FirstReg & 8) ? 2ul : 1ul) << ((FirstReg & 7) * 2); |
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| 298 | break; |
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| 299 | case eSymbolSize16Bit: |
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| 300 | ThisUse = 3ul << (FirstReg * 2); |
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| 301 | break; |
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| 302 | case eSymbolSize32Bit: |
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| 303 | ThisUse = 15ul << (FirstReg * 2); |
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| 304 | break; |
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| 305 | default: |
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| 306 | va_end(ap); |
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| 307 | return Index; |
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| 308 | } |
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| 309 | if (RegUse & ThisUse) |
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| 310 | { |
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| 311 | va_end(ap); |
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| 312 | return Index; |
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| 313 | } |
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| 314 | RegUse |= ThisUse; |
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| 315 | Index++; |
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| 316 | FirstReg = va_arg(ap, unsigned); |
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| 317 | FirstSize = va_arg(ap, int); |
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| 318 | if (FirstSize == eSymbolSizeUnknown) |
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| 319 | break; |
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| 320 | } |
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| 321 | va_end(ap); |
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| 322 | return -1; |
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| 323 | } |
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| 324 | |||
| 325 | /*--------------------------------------------------------------------------*/ |
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| 326 | /* Address Parsing */ |
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| 327 | |||
| 328 | /*!------------------------------------------------------------------------ |
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| 329 | * \fn DecodeReg(const tStrComp *pArg, Word *pValue, tSymbolSize *pSize, tChkRegSize ChkRegSize, Boolean MustBeReg) |
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| 330 | * \brief check whether argument is a CPU register or user-defined register alias |
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| 331 | * \param pArg argument |
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| 332 | * \param pValue resulting register # if yes |
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| 333 | * \param pSize resulting register size if yes |
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| 334 | * \param ChkReqSize optional check callback for register size |
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| 335 | * \param MustBeReg expecting register or maybe not? |
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| 336 | * \return reg eval result |
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| 337 | * ------------------------------------------------------------------------ */ |
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| 338 | |||
| 339 | typedef Boolean (*tChkRegSize)(const tStrComp *pArg, tSymbolSize ActSize); |
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| 340 | |||
| 341 | static Boolean ChkRegSize_Idx(const tStrComp *pArg, tSymbolSize ActSize) |
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| 342 | { |
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| 343 | if (ActSize != eSymbolSize16Bit) |
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| 344 | { |
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| 345 | WrStrErrorPos(ErrNum_IndexRegMustBe16Bit, pArg); |
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| 346 | return False; |
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| 347 | } |
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| 348 | return True; |
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| 349 | } |
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| 350 | |||
| 351 | static Boolean ChkRegSize_8To32(const tStrComp *pArg, tSymbolSize ActSize) |
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| 352 | { |
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| 353 | if (ActSize > eSymbolSize32Bit) |
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| 354 | { |
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| 355 | WrStrErrorPos(ErrNum_InvOpSize, pArg); |
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| 356 | return False; |
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| 357 | } |
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| 358 | return True; |
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| 359 | } |
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| 360 | |||
| 361 | static Boolean ChkRegSize_IOAddr(const tStrComp *pArg, tSymbolSize ActSize) |
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| 362 | { |
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| 363 | if (ActSize != eSymbolSize16Bit) |
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| 364 | { |
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| 365 | WrStrErrorPos(ErrNum_IOAddrRegMustBe16Bit, pArg); |
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| 366 | return False; |
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| 367 | } |
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| 368 | return True; |
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| 369 | } |
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| 370 | |||
| 371 | static Boolean ChkRegSize_MemAddr(const tStrComp *pArg, tSymbolSize ActSize) |
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| 372 | { |
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| 373 | if (Segmented()) |
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| 374 | { |
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| 375 | if (ActSize != eSymbolSize32Bit) |
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| 376 | { |
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| 377 | WrStrErrorPos(ErrNum_SegAddrRegMustBe32Bit, pArg); |
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| 378 | return False; |
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| 379 | } |
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| 380 | } |
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| 381 | else |
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| 382 | { |
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| 383 | if (ActSize != eSymbolSize16Bit) |
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| 384 | { |
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| 385 | WrStrErrorPos(ErrNum_NonSegAddrRegMustBe16Bit, pArg); |
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| 386 | return False; |
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| 387 | } |
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| 388 | } |
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| 389 | return True; |
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| 390 | } |
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| 391 | |||
| 392 | static tRegEvalResult DecodeReg(const tStrComp *pArg, Word *pValue, tSymbolSize *pSize, tChkRegSize ChkRegSize, Boolean MustBeReg) |
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| 393 | { |
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| 394 | tEvalResult EvalResult; |
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| 395 | tRegEvalResult RegEvalResult; |
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| 396 | |||
| 397 | if (DecodeRegCore(pArg->str.p_str, pValue, &EvalResult.DataSize)) |
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| 398 | RegEvalResult = eIsReg; |
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| 399 | else |
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| 400 | { |
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| 401 | tRegDescr RegDescr; |
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| 402 | |||
| 403 | RegEvalResult = EvalStrRegExpressionAsOperand(pArg, &RegDescr, &EvalResult, eSymbolSizeUnknown, MustBeReg); |
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| 404 | if (eIsReg == RegEvalResult) |
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| 405 | *pValue = RegDescr.Reg; |
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| 406 | } |
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| 407 | |||
| 408 | if ((RegEvalResult == eIsReg) |
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| 409 | && ChkRegSize |
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| 410 | && !ChkRegSize(pArg, EvalResult.DataSize)) |
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| 411 | RegEvalResult = MustBeReg ? eIsNoReg : eRegAbort; |
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| 412 | |||
| 413 | if (pSize) *pSize = EvalResult.DataSize; |
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| 414 | return RegEvalResult; |
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| 415 | } |
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| 416 | |||
| 417 | /*!------------------------------------------------------------------------ |
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| 418 | * \fn ClearAdrVals(tAdrVals *pAdrVals) |
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| 419 | * \brief clear address expression result buffer |
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| 420 | * \param pAdrVals buffer to clear |
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| 421 | * ------------------------------------------------------------------------ */ |
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| 422 | |||
| 423 | static void ClearAdrVals(tAdrVals *pAdrVals) |
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| 424 | { |
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| 425 | pAdrVals->Mode = eModNone; |
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| 426 | pAdrVals->Cnt = 0; |
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| 427 | pAdrVals->Val = 0; |
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| 428 | } |
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| 429 | |||
| 430 | /*!------------------------------------------------------------------------ |
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| 431 | * \fn SetOpSize(tSymbolSize Size, const tStrComp *pArg) |
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| 432 | * \brief set (new) operand size of instruction |
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| 433 | * \param Size size to set |
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| 434 | * \param pArg source argument size was deduced from |
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| 435 | * \return True if no conflict |
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| 436 | * ------------------------------------------------------------------------ */ |
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| 437 | |||
| 438 | static Boolean SetOpSize(tSymbolSize Size, const tStrComp *pArg) |
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| 439 | { |
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| 440 | if (OpSize == eSymbolSizeUnknown) |
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| 441 | OpSize = Size; |
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| 442 | else if ((Size != eSymbolSizeUnknown) && (Size != OpSize)) |
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| 443 | { |
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| 444 | WrStrErrorPos(ErrNum_ConfOpSizes, pArg); |
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| 445 | return False; |
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| 446 | } |
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| 447 | return True; |
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| 448 | } |
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| 449 | |||
| 450 | /*!------------------------------------------------------------------------ |
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| 451 | * \fn GetImmIntType(tSymbolSize Size) |
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| 452 | * \brief retrieve immediate int type fitting to operand size |
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| 453 | * \param Size operand size |
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| 454 | * \return int type |
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| 455 | * ------------------------------------------------------------------------ */ |
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| 456 | |||
| 457 | static IntType GetImmIntType(tSymbolSize Size) |
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| 458 | { |
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| 459 | switch ((int)Size) |
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| 460 | { |
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| 461 | case eSymbolSize3Bit: |
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| 462 | return UInt3; |
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| 463 | case eSymbolSize4Bit: |
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| 464 | return UInt4; |
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| 465 | case eSymbolSize8Bit: |
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| 466 | return Int8; |
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| 467 | case eSymbolSize16Bit: |
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| 468 | return Int16; |
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| 469 | case eSymbolSize32Bit: |
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| 470 | return Int32; |
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| 471 | default: |
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| 472 | return IntTypeCnt; |
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| 473 | } |
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| 474 | } |
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| 475 | |||
| 476 | /*!------------------------------------------------------------------------ |
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| 477 | * \fn DecodeAddrPartNum(const tStrComp *pArg, LongInt Disp, tEvalResult *pEvalResult, Boolean IsDirect, Boolean IsIO, Boolean *pForceShortt, Boolean *pIsDirect) |
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| 478 | * \brief decode address part, for direct/immediate or indexed mode |
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| 479 | * \param pArg source argument |
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| 480 | * \param Disp displacement to add to value |
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| 481 | * \param pAdrVals binary coding of addressing mode |
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| 482 | * \param IsDirect force treatment as direct address mode |
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| 483 | * \param IsIO I/O space instead of memory space |
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| 484 | * \param pForceShort short coding required? |
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| 485 | * \param pIsDirect classified as direct addressing? |
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| 486 | * \return True if success |
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| 487 | * ------------------------------------------------------------------------ */ |
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| 488 | |||
| 489 | typedef struct |
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| 490 | { |
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| 491 | as_quoted_iterator_cb_data_t data; |
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| 492 | int nest; |
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| 493 | char *p_split_pos; |
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| 494 | } split_cb_data_t; |
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| 495 | |||
| 496 | static int split_cb(const char *p_pos, as_quoted_iterator_cb_data_t *p_cb_data) |
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| 497 | { |
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| 498 | split_cb_data_t *p_data = (split_cb_data_t*)p_cb_data; |
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| 499 | |||
| 500 | switch (*p_pos) |
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| 501 | { |
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| 502 | case '(': |
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| 503 | p_data->nest++; |
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| 504 | break; |
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| 505 | case ')': |
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| 506 | p_data->nest--; |
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| 507 | break; |
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| 508 | case '>': |
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| 509 | if (!p_data->nest && (p_pos[1] == '>')) |
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| 510 | p_data->p_split_pos = (char*)p_pos; |
||
| 511 | break; |
||
| 512 | default: |
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| 513 | if (p_data->p_split_pos) |
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| 514 | { |
||
| 515 | if (as_isspace(*p_pos)); /* delay decision to to next non-blank */ |
||
| 516 | else if (as_isalnum(*p_pos) || (*p_pos == '(')) |
||
| 517 | return -1; /* found */ |
||
| 518 | else |
||
| 519 | p_data->p_split_pos = NULL; |
||
| 520 | } |
||
| 521 | break; |
||
| 522 | } |
||
| 523 | return 0; |
||
| 524 | } |
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| 525 | |||
| 526 | static LongWord DecodeAddrPartNum(const tStrComp *pArg, LongInt Disp, tEvalResult *pEvalResult, Boolean IsDirect, Boolean IsIO, Boolean *pForceShort, Boolean *pIsDirect) |
||
| 527 | { |
||
| 528 | tStrComp CopyComp; |
||
| 529 | String Copy; |
||
| 530 | Boolean HasSeg = False; |
||
| 531 | LongWord Result, SegNum = 0; |
||
| 532 | IntType ThisIntType; |
||
| 533 | |||
| 534 | StrCompMkTemp(&CopyComp, Copy, sizeof(Copy)); |
||
| 535 | StrCompCopy(&CopyComp, pArg); |
||
| 536 | *pForceShort = False; |
||
| 537 | |||
| 538 | /* deal with |....| and <<seg>>offs only in segmented mode: */ |
||
| 539 | |||
| 540 | if (!IsIO && Segmented()) |
||
| 541 | { |
||
| 542 | int Len = strlen(CopyComp.str.p_str); |
||
| 543 | |||
| 544 | if ((Len >= 2) && (CopyComp.str.p_str[0] == '|') && (CopyComp.str.p_str[Len - 1] == '|')) |
||
| 545 | { |
||
| 546 | StrCompShorten(&CopyComp, 1); |
||
| 547 | StrCompCutLeft(&CopyComp, 1); |
||
| 548 | KillPrefBlanksStrComp(&CopyComp); |
||
| 549 | KillPostBlanksStrComp(&CopyComp); |
||
| 550 | *pForceShort = True; |
||
| 551 | IsDirect = True; |
||
| 552 | Len -= 2; |
||
| 553 | } |
||
| 554 | if (!strncmp(CopyComp.str.p_str, "<<", 2)) |
||
| 555 | { |
||
| 556 | split_cb_data_t split_data; |
||
| 557 | |||
| 558 | split_data.data.callback_before = False; |
||
| 559 | split_data.data.qualify_quote = QualifyQuote; |
||
| 560 | split_data.p_split_pos = NULL; |
||
| 561 | split_data.nest = 0; |
||
| 562 | |||
| 563 | as_iterate_str_quoted(CopyComp.str.p_str + 2, split_cb, &split_data.data); |
||
| 564 | |||
| 565 | if (split_data.p_split_pos) |
||
| 566 | { |
||
| 567 | tStrComp SegArg; |
||
| 568 | |||
| 569 | StrCompSplitRef(&SegArg, &CopyComp, &CopyComp, split_data.p_split_pos); |
||
| 570 | StrCompIncRefLeft(&CopyComp, 1); |
||
| 571 | SegNum = EvalStrIntExpressionOffsWithResult(&SegArg, 2, UInt7, pEvalResult); |
||
| 572 | if (!pEvalResult->OK) |
||
| 573 | return 0; |
||
| 574 | HasSeg = True; |
||
| 575 | IsDirect = True; |
||
| 576 | } |
||
| 577 | } |
||
| 578 | } |
||
| 579 | |||
| 580 | /* If we know it's direct, right away limit to the correct address range. Otherwise, it might |
||
| 581 | be immediate up to 32 bits: */ |
||
| 582 | |||
| 583 | if (IsDirect) |
||
| 584 | ThisIntType = (IsIO || HasSeg) ? UInt16 : MemIntType; |
||
| 585 | else |
||
| 586 | ThisIntType = Int32; |
||
| 587 | Result = EvalStrIntExpressionWithResult(&CopyComp, ThisIntType, pEvalResult) + Disp; |
||
| 588 | |||
| 589 | /* For AMD syntax, treat as direct if no untyped constant */ |
||
| 590 | |||
| 591 | if (AMDSyntax && !IsDirect && pEvalResult->AddrSpaceMask) |
||
| 592 | IsDirect = True; |
||
| 593 | |||
| 594 | /* for forwards, truncate to allowed range */ |
||
| 595 | |||
| 596 | if (IsDirect) |
||
| 597 | ThisIntType = (IsIO || HasSeg) ? UInt16 : MemIntType; |
||
| 598 | else |
||
| 599 | ThisIntType = GetImmIntType(OpSize); |
||
| 600 | if (mFirstPassUnknown(pEvalResult->Flags) && (ThisIntType < IntTypeCnt)) |
||
| 601 | Result &= IntTypeDefs[(int)ThisIntType].Mask; |
||
| 602 | |||
| 603 | if (IsDirect) |
||
| 604 | { |
||
| 605 | Result |= (SegNum << 16); |
||
| 606 | if (pEvalResult->OK |
||
| 607 | && !mFirstPassUnknownOrQuestionable(pEvalResult->Flags) |
||
| 608 | && *pForceShort |
||
| 609 | && (Result & 0x00ff00ul)) |
||
| 610 | { |
||
| 611 | WrStrErrorPos(ErrNum_NoShortAddr, pArg); |
||
| 612 | pEvalResult->OK = False; |
||
| 613 | } |
||
| 614 | } |
||
| 615 | if (pIsDirect) |
||
| 616 | *pIsDirect = IsDirect; |
||
| 617 | return Result; |
||
| 618 | } |
||
| 619 | |||
| 620 | /*!------------------------------------------------------------------------ |
||
| 621 | * \fn FillAbsAddr(tAdrVals *pAdrVals, LongWord Address, Boolean IsDirect, Boolean IsIO, Boolean ForceShort, Boolean *pIsDirect) |
||
| 622 | * \brief pack absolute addess into instruction extension word(s) |
||
| 623 | * \param pAdrVals destination buffer |
||
| 624 | * \param Address address to pack |
||
| 625 | * \param IsDirect force treatment as direct address mode |
||
| 626 | * \param IsIO I/O (16b) or memory (23/16b) address? |
||
| 627 | * \param ForceShort force short encoding |
||
| 628 | * \param pIsDirect classified as direct addressing? |
||
| 629 | * ------------------------------------------------------------------------ */ |
||
| 630 | |||
| 631 | static void FillAbsAddr(tAdrVals *pAdrVals, LongWord Address, Boolean IsIO, Boolean ForceShort) |
||
| 632 | { |
||
| 633 | Word Offset = Address & 0xffff; |
||
| 634 | |||
| 635 | if (Segmented() && !IsIO) |
||
| 636 | { |
||
| 637 | pAdrVals->Vals[pAdrVals->Cnt++] = (Address >> 8) & 0x7f00; |
||
| 638 | if ((Offset <= 0xff) && ForceShort) |
||
| 639 | pAdrVals->Vals[pAdrVals->Cnt - 1] |= Offset; |
||
| 640 | else |
||
| 641 | { |
||
| 642 | pAdrVals->Vals[pAdrVals->Cnt - 1] |= 0x8000; |
||
| 643 | pAdrVals->Vals[pAdrVals->Cnt++] = Offset; |
||
| 644 | } |
||
| 645 | } |
||
| 646 | else |
||
| 647 | pAdrVals->Vals[pAdrVals->Cnt++] = Offset; |
||
| 648 | } |
||
| 649 | |||
| 650 | /*!------------------------------------------------------------------------ |
||
| 651 | * \fn FillImmVal(tAdrVals *pAdrVals, LongWord Value, tSymbolSize OpSize) |
||
| 652 | * \brief fill address values from immediate value |
||
| 653 | * \param pAdrVals dest buffer |
||
| 654 | * \param Value value to fill in |
||
| 655 | * \param OpSize used operand size |
||
| 656 | * ------------------------------------------------------------------------ */ |
||
| 657 | |||
| 658 | static void FillImmVal(tAdrVals *pAdrVals, LongWord Value, tSymbolSize OpSize) |
||
| 659 | { |
||
| 660 | switch ((int)OpSize) |
||
| 661 | { |
||
| 662 | case eSymbolSize3Bit: |
||
| 663 | pAdrVals->Val = Value & 7; |
||
| 664 | break; |
||
| 665 | case eSymbolSize4Bit: |
||
| 666 | pAdrVals->Val = Value & 15; |
||
| 667 | break; |
||
| 668 | case eSymbolSize8Bit: |
||
| 669 | pAdrVals->Vals[pAdrVals->Cnt++] = (Value & 0xff) | ((Value & 0xff) << 8); |
||
| 670 | break; |
||
| 671 | case eSymbolSize16Bit: |
||
| 672 | pAdrVals->Vals[pAdrVals->Cnt++] = Value & 0xffff; |
||
| 673 | break; |
||
| 674 | case eSymbolSize32Bit: |
||
| 675 | pAdrVals->Vals[pAdrVals->Cnt++] = (Value >> 16) & 0xffff; |
||
| 676 | pAdrVals->Vals[pAdrVals->Cnt++] = Value & 0xffff; |
||
| 677 | break; |
||
| 678 | default: |
||
| 679 | break; |
||
| 680 | } |
||
| 681 | } |
||
| 682 | |||
| 683 | /*!------------------------------------------------------------------------ |
||
| 684 | * \fn DecodeAddrPart(const tStrComp *pArg, LongInt Disp, tAdrVals *pAdrVals, Boolean IsDirect, Boolean IsIO, Boolean *pIsDirect) |
||
| 685 | * \brief decode address part, for direct/immediate or indexed mode |
||
| 686 | * \param pArg source argument |
||
| 687 | * \param Disp displacement to add to value |
||
| 688 | * \param pAdrVals binary coding of addressing mode |
||
| 689 | * \param IsDirect force treatment as direct address mode |
||
| 690 | * \param IsIO I/O space instead of memory space |
||
| 691 | * \param pIsDirect classified as direct addressing? |
||
| 692 | * \return True if success |
||
| 693 | * ------------------------------------------------------------------------ */ |
||
| 694 | |||
| 695 | static Boolean DecodeAddrPart(const tStrComp *pArg, LongInt Disp, tAdrVals *pAdrVals, Boolean IsDirect, Boolean IsIO, Boolean *pIsDirect) |
||
| 696 | { |
||
| 697 | LongWord Address; |
||
| 698 | tEvalResult EvalResult; |
||
| 699 | Boolean ForceLong; |
||
| 700 | |||
| 701 | Address = DecodeAddrPartNum(pArg, Disp, &EvalResult, IsDirect, IsIO, &ForceLong, pIsDirect); |
||
| 702 | if (EvalResult.OK) |
||
| 703 | { |
||
| 704 | ChkSpace(IsIO ? SegIO : SegCode, EvalResult.AddrSpaceMask); |
||
| 705 | if (!pIsDirect || *pIsDirect) |
||
| 706 | FillAbsAddr(pAdrVals, Address, IsIO, ForceLong); |
||
| 707 | else |
||
| 708 | FillImmVal(pAdrVals, Address, OpSize); |
||
| 709 | return True; |
||
| 710 | } |
||
| 711 | else |
||
| 712 | return False; |
||
| 713 | } |
||
| 714 | |||
| 715 | /*!------------------------------------------------------------------------ |
||
| 716 | * \fn DecodeAdr(const tStrComp *pArg, unsigned ModeMask, tAdrVals *pAdrVals) |
||
| 717 | * \brief decode address expression |
||
| 718 | * \param pArg source argument |
||
| 719 | * \param ModeMask bit mask of allowed addressing modes |
||
| 720 | * \param pAdrVals binary coding of addressing mode |
||
| 721 | * \return decoded mode |
||
| 722 | * ------------------------------------------------------------------------ */ |
||
| 723 | |||
| 724 | /* This is necessary to find the split position when a short address is used as |
||
| 725 | base, i.e. |addr|(rn). | is also the OR operator, and I don't want to get |
||
| 726 | false positives on other targets on stuff like (...)|(...): */ |
||
| 727 | |||
| 728 | static int ShortQualifier(const char *pArg, int NextNonBlankPos, int SplitPos) |
||
| 729 | { |
||
| 730 | int FirstNonBlankPos; |
||
| 731 | |||
| 732 | for (FirstNonBlankPos = 0; FirstNonBlankPos < NextNonBlankPos; FirstNonBlankPos++) |
||
| 733 | if (!as_isspace(pArg[FirstNonBlankPos])) |
||
| 734 | break; |
||
| 735 | return ((FirstNonBlankPos < NextNonBlankPos) && (pArg[FirstNonBlankPos] == '|') && (pArg[NextNonBlankPos] == '|')) ? SplitPos : -1; |
||
| 736 | } |
||
| 737 | |||
| 738 | static tAdrMode DecodeAdr(const tStrComp *pArg, unsigned ModeMask, tAdrVals *pAdrVals) |
||
| 739 | { |
||
| 740 | tSymbolSize ArgSize; |
||
| 741 | int ArgLen, SplitPos, z; |
||
| 742 | Boolean IsIO = !!(ModeMask & MModIO); |
||
| 743 | tChkRegSize ChkRegSize_Addr = IsIO ? ChkRegSize_IOAddr : ChkRegSize_MemAddr, ChkRegSizeForIOIndir; |
||
| 744 | Boolean IsDirect; |
||
| 745 | |||
| 746 | ClearAdrVals(pAdrVals); |
||
| 747 | |||
| 748 | /* immediate */ |
||
| 749 | |||
| 750 | if (*pArg->str.p_str == '#') |
||
| 751 | { |
||
| 752 | LongWord Result; |
||
| 753 | Boolean OK; |
||
| 754 | |||
| 755 | if (ImmOpSize == eSymbolSizeUnknown) |
||
| 756 | ImmOpSize = OpSize; |
||
| 757 | switch (ImmOpSize) |
||
| 758 | { |
||
| 759 | case eSymbolSize3Bit: |
||
| 760 | pAdrVals->Val = EvalStrIntExpressionOffs(pArg, 1, UInt3, &OK); |
||
| 761 | break; |
||
| 762 | case eSymbolSize4Bit: |
||
| 763 | pAdrVals->Val = EvalStrIntExpressionOffs(pArg, 1, UInt4, &OK); |
||
| 764 | break; |
||
| 765 | case eSymbolSize8Bit: |
||
| 766 | Result = EvalStrIntExpressionOffs(pArg, 1, Int8, &OK); |
||
| 767 | if (OK) |
||
| 768 | pAdrVals->Vals[pAdrVals->Cnt++] = (Result & 0xff) | ((Result & 0xff) << 8); |
||
| 769 | break; |
||
| 770 | case eSymbolSize16Bit: |
||
| 771 | Result = EvalStrIntExpressionOffs(pArg, 1, Int16, &OK); |
||
| 772 | if (OK) |
||
| 773 | pAdrVals->Vals[pAdrVals->Cnt++] = Result & 0xffff; |
||
| 774 | break; |
||
| 775 | case eSymbolSize32Bit: |
||
| 776 | Result = EvalStrIntExpressionOffs(pArg, 1, Int32, &OK); |
||
| 777 | if (OK) |
||
| 778 | { |
||
| 779 | pAdrVals->Vals[pAdrVals->Cnt++] = (Result >> 16) & 0xffff; |
||
| 780 | pAdrVals->Vals[pAdrVals->Cnt++] = Result & 0xffff; |
||
| 781 | } |
||
| 782 | break; |
||
| 783 | default: |
||
| 784 | WrStrErrorPos(ErrNum_UndefOpSizes, pArg); |
||
| 785 | return pAdrVals->Mode; |
||
| 786 | } |
||
| 787 | if (OK) |
||
| 788 | { |
||
| 789 | /* Immediate: is the same coding as indirect, however with register field = 0. |
||
| 790 | This why register 0 is not allowed for indirect mode. |
||
| 791 | As an exception, immediate value is placed in pAdrVals->Val for bit number: */ |
||
| 792 | |||
| 793 | pAdrVals->Mode = eModImm; |
||
| 794 | if (OpSize == eSymbolSizeUnknown) |
||
| 795 | OpSize = (tSymbolSize)ImmOpSize; |
||
| 796 | } |
||
| 797 | goto chk; |
||
| 798 | } |
||
| 799 | |||
| 800 | /* Register (R): For AMD syntax, Rn is equivalent to Rn^ resp. @Rn, if I/O ports |
||
| 801 | are addressed indirectly: */ |
||
| 802 | |||
| 803 | ChkRegSizeForIOIndir = (AMDSyntax && !(ModeMask & MModReg) && (ModeMask & MModIReg) && IsIO) ? ChkRegSize_Addr : NULL; |
||
| 804 | switch (DecodeReg(pArg, &pAdrVals->Val, &ArgSize, ChkRegSizeForIOIndir, False)) |
||
| 805 | { |
||
| 806 | case eRegAbort: |
||
| 807 | return pAdrVals->Mode; |
||
| 808 | case eIsReg: |
||
| 809 | { |
||
| 810 | if (ChkRegSizeForIOIndir) |
||
| 811 | pAdrVals->Mode = eModIReg; |
||
| 812 | else |
||
| 813 | { |
||
| 814 | if (!SetOpSize(ArgSize, pArg)) |
||
| 815 | return pAdrVals->Mode; |
||
| 816 | pAdrVals->Mode = eModReg; |
||
| 817 | } |
||
| 818 | goto chk; |
||
| 819 | } |
||
| 820 | default: |
||
| 821 | break; |
||
| 822 | } |
||
| 823 | |||
| 824 | /* control register */ |
||
| 825 | |||
| 826 | for (z = 0; z < CtlRegCnt; z++) |
||
| 827 | if (!as_strcasecmp(pArg->str.p_str, CtlRegs[z].pName)) |
||
| 828 | { |
||
| 829 | if (!(CtlRegs[z].Flags & (Segmented() ? eSegMode : eNonSegMode))) |
||
| 830 | { |
||
| 831 | WrStrErrorPos(ErrNum_InvCtrlReg, pArg); |
||
| 832 | return pAdrVals->Mode; |
||
| 833 | } |
||
| 834 | if (!SetOpSize(CtlRegs[z].Size, pArg)) |
||
| 835 | return pAdrVals->Mode; |
||
| 836 | if (!CheckSup(!!(CtlRegs[z].Flags & ePrivileged))) |
||
| 837 | return pAdrVals->Mode; |
||
| 838 | pAdrVals->Val = CtlRegs[z].Code; |
||
| 839 | pAdrVals->Mode = eModCtl; |
||
| 840 | goto chk; |
||
| 841 | } |
||
| 842 | |||
| 843 | /* Register indirect (IR): */ |
||
| 844 | |||
| 845 | if (*pArg->str.p_str == '@') |
||
| 846 | { |
||
| 847 | tStrComp RegComp; |
||
| 848 | |||
| 849 | StrCompRefRight(&RegComp, pArg, 1); |
||
| 850 | if (eIsReg == DecodeReg(&RegComp, &pAdrVals->Val, &ArgSize, ChkRegSize_Addr, True)) |
||
| 851 | { |
||
| 852 | if (!pAdrVals->Val) WrStrErrorPos(ErrNum_InvAddrMode, &RegComp); |
||
| 853 | else |
||
| 854 | pAdrVals->Mode = eModIReg; |
||
| 855 | } |
||
| 856 | goto chk; |
||
| 857 | } |
||
| 858 | if (AMDSyntax |
||
| 859 | && ((ArgLen = strlen(pArg->str.p_str)) > 1) |
||
| 860 | && (pArg->str.p_str[ArgLen - 1] == '^')) |
||
| 861 | { |
||
| 862 | String Reg; |
||
| 863 | tStrComp RegComp; |
||
| 864 | |||
| 865 | StrCompMkTemp(&RegComp, Reg, sizeof(Reg)); |
||
| 866 | StrCompCopySub(&RegComp, pArg, 0, ArgLen - 1); |
||
| 867 | switch (DecodeReg(&RegComp, &pAdrVals->Val, &ArgSize, ChkRegSize_Addr, False)) |
||
| 868 | { |
||
| 869 | case eRegAbort: |
||
| 870 | return pAdrVals->Mode; |
||
| 871 | case eIsReg: |
||
| 872 | if (!pAdrVals->Val) WrStrErrorPos(ErrNum_InvAddrMode, &RegComp); |
||
| 873 | else |
||
| 874 | pAdrVals->Mode = eModIReg; |
||
| 875 | goto chk; |
||
| 876 | default: |
||
| 877 | break; |
||
| 878 | } |
||
| 879 | } |
||
| 880 | |||
| 881 | /* Indexed, base... */ |
||
| 882 | |||
| 883 | SplitPos = FindDispBaseSplitWithQualifier(pArg->str.p_str, &ArgLen, ShortQualifier, "()"); |
||
| 884 | if (SplitPos > 0) |
||
| 885 | { |
||
| 886 | String OutStr, InStr; |
||
| 887 | tStrComp OutArg, InArg; |
||
| 888 | |||
| 889 | /* copy out base + index components */ |
||
| 890 | |||
| 891 | StrCompMkTemp(&OutArg, OutStr, sizeof(OutStr)); |
||
| 892 | StrCompMkTemp(&InArg, InStr, sizeof(InStr)); |
||
| 893 | StrCompCopySub(&OutArg, pArg, 0, SplitPos); |
||
| 894 | KillPostBlanksStrComp(&OutArg); |
||
| 895 | StrCompCopySub(&InArg, pArg, SplitPos + 1, ArgLen - SplitPos - 2); |
||
| 896 | switch (DecodeReg(&OutArg, &pAdrVals->Val, &ArgSize, ChkRegSize_Addr, False)) |
||
| 897 | { |
||
| 898 | case eIsReg: /* [R]Rx(...) */ |
||
| 899 | if (!pAdrVals->Val) WrStrErrorPos(ErrNum_InvAddrMode, &OutArg); |
||
| 900 | else if (*InArg.str.p_str == '#') |
||
| 901 | { |
||
| 902 | Boolean OK; |
||
| 903 | |||
| 904 | pAdrVals->Vals[pAdrVals->Cnt++] = EvalStrIntExpressionOffs(&InArg, 1, Int16, &OK); |
||
| 905 | if (OK) |
||
| 906 | pAdrVals->Mode = eModBaseAddress; |
||
| 907 | } |
||
| 908 | else if (DecodeReg(&InArg, &pAdrVals->Vals[pAdrVals->Cnt], &ArgSize, ChkRegSize_Idx, True) == eIsReg) |
||
| 909 | { |
||
| 910 | pAdrVals->Vals[pAdrVals->Cnt] <<= 8; |
||
| 911 | pAdrVals->Cnt++; |
||
| 912 | pAdrVals->Mode = eModBaseIndexed; |
||
| 913 | } |
||
| 914 | goto chk; |
||
| 915 | case eIsNoReg: /* abs(...) */ |
||
| 916 | { |
||
| 917 | switch (DecodeReg(&InArg, &pAdrVals->Val, &ArgSize, ChkRegSize_Idx, False)) |
||
| 918 | { |
||
| 919 | case eIsReg: /* abs(Rx) */ |
||
| 920 | if (DecodeAddrPart(&OutArg, 0, pAdrVals, True, IsIO, NULL)) |
||
| 921 | pAdrVals->Mode = eModIndexed; |
||
| 922 | break; |
||
| 923 | case eIsNoReg: /* abs/imm(delta) -> direct/imm*/ |
||
| 924 | { |
||
| 925 | Boolean OK; |
||
| 926 | LongInt Disp = EvalStrIntExpression(&InArg, Int16, &OK); |
||
| 927 | |||
| 928 | if (OK && DecodeAddrPart(&OutArg, Disp, pAdrVals, !AMDSyntax || !(ModeMask & MModImm), IsIO, &IsDirect)) |
||
| 929 | goto DirectOrImmediate; |
||
| 930 | break; |
||
| 931 | } |
||
| 932 | default: |
||
| 933 | return pAdrVals->Mode; |
||
| 934 | } |
||
| 935 | goto chk; |
||
| 936 | } |
||
| 937 | case eRegAbort: |
||
| 938 | return pAdrVals->Mode; |
||
| 939 | } |
||
| 940 | } |
||
| 941 | |||
| 942 | /* Absolute: is the same coding as indexed, however with index register field = 0. |
||
| 943 | This is why register 0 is not allowed for indexed mode. */ |
||
| 944 | |||
| 945 | if (DecodeAddrPart(pArg, 0, pAdrVals, !AMDSyntax || !(ModeMask & MModImm), IsIO, &IsDirect)) |
||
| 946 | { |
||
| 947 | DirectOrImmediate: |
||
| 948 | if (IsDirect) |
||
| 949 | { |
||
| 950 | pAdrVals->Val = 0; |
||
| 951 | pAdrVals->Mode = eModDirect; |
||
| 952 | } |
||
| 953 | else |
||
| 954 | pAdrVals->Mode = eModImm; |
||
| 955 | } |
||
| 956 | |||
| 957 | chk: |
||
| 958 | if ((pAdrVals->Mode != eModNone) & !((ModeMask >> pAdrVals->Mode) & 1)) |
||
| 959 | { |
||
| 960 | WrStrErrorPos(ErrNum_InvAddrMode, pArg); |
||
| 961 | ClearAdrVals(pAdrVals); |
||
| 962 | } |
||
| 963 | return pAdrVals->Mode; |
||
| 964 | } |
||
| 965 | |||
| 966 | /*--------------------------------------------------------------------------*/ |
||
| 967 | /* Bit Symbol Handling */ |
||
| 968 | |||
| 969 | /* |
||
| 970 | * Compact representation of bits in symbol table: |
||
| 971 | * bits 0...2/3: bit position |
||
| 972 | * bits 3/4...25/26: address in memory space (7+16 bits) |
||
| 973 | * bit 28: operand size (0/1 for 8/16 bits) |
||
| 974 | * bit 29: force short address in segmented mode |
||
| 975 | */ |
||
| 976 | |||
| 977 | /*!------------------------------------------------------------------------ |
||
| 978 | * \fn AssembleBitSymbol(Byte BitPos, tSymbolSize OpSize, LongWord Address, Boolean ForceShort) |
||
| 979 | * \brief build the compact internal representation of a bit symbol |
||
| 980 | * \param BitPos bit position in word |
||
| 981 | * \param OpSize operand size (8/16) |
||
| 982 | * \param Address memory address |
||
| 983 | * \param ForceShort force short address in segmented mode |
||
| 984 | * \return compact representation |
||
| 985 | * ------------------------------------------------------------------------ */ |
||
| 986 | |||
| 987 | static LongWord AssembleBitSymbol(Byte BitPos, tSymbolSize OpSize, LongWord Address, Boolean ForceShort) |
||
| 988 | { |
||
| 989 | LongWord CodeOpSize = (OpSize == eSymbolSize16Bit) ? 1 : 0; |
||
| 990 | int AddrShift = CodeOpSize + 3; |
||
| 991 | |||
| 992 | return BitPos |
||
| 993 | | ((Address & 0x7fffff) << AddrShift) |
||
| 994 | | (CodeOpSize << 28) |
||
| 995 | | ((!!ForceShort) << 29); |
||
| 996 | } |
||
| 997 | |||
| 998 | /*!------------------------------------------------------------------------ |
||
| 999 | * \fn EvalBitPosition(const char *pBitArg, Boolean *pOK, ShortInt OpSize) |
||
| 1000 | * \brief evaluate constant bit position, with bit range depending on operand size |
||
| 1001 | * \param pBitArg bit position argument |
||
| 1002 | * \param pOK returns True if OK |
||
| 1003 | * \param OpSize operand size (0,1,2 -> 8,16,32 bits) |
||
| 1004 | * \return bit position as number |
||
| 1005 | * ------------------------------------------------------------------------ */ |
||
| 1006 | |||
| 1007 | static Byte EvalBitPosition(const tStrComp *pBitArg, Boolean *pOK, tSymbolSize OpSize) |
||
| 1008 | { |
||
| 1009 | IntType Type; |
||
| 1010 | |||
| 1011 | switch (OpSize) |
||
| 1012 | { |
||
| 1013 | case eSymbolSize8Bit: |
||
| 1014 | Type = UInt3; |
||
| 1015 | goto common; |
||
| 1016 | case eSymbolSize16Bit: |
||
| 1017 | Type = UInt4; |
||
| 1018 | goto common; |
||
| 1019 | default: |
||
| 1020 | WrStrErrorPos(ErrNum_InvOpSize, pBitArg); |
||
| 1021 | *pOK = False; |
||
| 1022 | return 0; |
||
| 1023 | common: |
||
| 1024 | return EvalStrIntExpressionOffs(pBitArg, !!(*pBitArg->str.p_str == '#'), Type, pOK); |
||
| 1025 | } |
||
| 1026 | } |
||
| 1027 | |||
| 1028 | /*!------------------------------------------------------------------------ |
||
| 1029 | * \fn DecodeBitArg2(LongWord *pResult, const tStrComp *pMemArg, const tStrComp *pBitArg, tSymbolSize OpSize) |
||
| 1030 | * \brief encode a bit symbol, address & bit position separated |
||
| 1031 | * \param pResult resulting encoded bit |
||
| 1032 | * \param pMemArg register argument |
||
| 1033 | * \param pBitArg bit argument |
||
| 1034 | * \param OpSize register size (0/1 = 8/16 bit) |
||
| 1035 | * \return True if success |
||
| 1036 | * ------------------------------------------------------------------------ */ |
||
| 1037 | |||
| 1038 | static Boolean DecodeBitArg2(LongWord *pResult, const tStrComp *pMemArg, const tStrComp *pBitArg, tSymbolSize OpSize) |
||
| 1039 | { |
||
| 1040 | tEvalResult EvalResult; |
||
| 1041 | LongWord Addr; |
||
| 1042 | Byte BitPos; |
||
| 1043 | Boolean ForceShort; |
||
| 1044 | |||
| 1045 | BitPos = EvalBitPosition(pBitArg, &EvalResult.OK, OpSize); |
||
| 1046 | if (!EvalResult.OK) |
||
| 1047 | return False; |
||
| 1048 | |||
| 1049 | Addr = DecodeAddrPartNum(pMemArg, 0, &EvalResult, True, False, &ForceShort, NULL); |
||
| 1050 | if (!EvalResult.OK) |
||
| 1051 | return False; |
||
| 1052 | |||
| 1053 | *pResult = AssembleBitSymbol(BitPos, OpSize, Addr, ForceShort); |
||
| 1054 | |||
| 1055 | return True; |
||
| 1056 | } |
||
| 1057 | |||
| 1058 | /*!------------------------------------------------------------------------ |
||
| 1059 | * \fn DecodeBitArg(LongWord *pResult, int Start, int Stop, tSymbolSize OpSize) |
||
| 1060 | * \brief encode a bit symbol from instruction argument(s) |
||
| 1061 | * \param pResult resulting encoded bit |
||
| 1062 | * \param Start first argument |
||
| 1063 | * \param Stop last argument |
||
| 1064 | * \param OpSize register size (0/1 = 8/16 bit) |
||
| 1065 | * \return True if success |
||
| 1066 | * ------------------------------------------------------------------------ */ |
||
| 1067 | |||
| 1068 | static Boolean DecodeBitArg(LongWord *pResult, int Start, int Stop, tSymbolSize OpSize) |
||
| 1069 | { |
||
| 1070 | *pResult = 0; |
||
| 1071 | |||
| 1072 | /* Just one argument -> parse as bit argument */ |
||
| 1073 | |||
| 1074 | if (Start == Stop) |
||
| 1075 | { |
||
| 1076 | tEvalResult EvalResult; |
||
| 1077 | |||
| 1078 | *pResult = EvalStrIntExpressionWithResult(&ArgStr[Start], UInt32, &EvalResult); |
||
| 1079 | if (EvalResult.OK) |
||
| 1080 | ChkSpace(SegBData, EvalResult.AddrSpaceMask); |
||
| 1081 | return EvalResult.OK; |
||
| 1082 | } |
||
| 1083 | |||
| 1084 | /* register & bit position are given as separate arguments */ |
||
| 1085 | |||
| 1086 | else if (Stop == Start + 1) |
||
| 1087 | return DecodeBitArg2(pResult, &ArgStr[Start], &ArgStr[Stop], OpSize); |
||
| 1088 | |||
| 1089 | /* other # of arguments not allowed */ |
||
| 1090 | |||
| 1091 | else |
||
| 1092 | { |
||
| 1093 | WrError(ErrNum_WrongArgCnt); |
||
| 1094 | return False; |
||
| 1095 | } |
||
| 1096 | } |
||
| 1097 | |||
| 1098 | /*!------------------------------------------------------------------------ |
||
| 1099 | * \fn DissectBitSymbol(LongWord BitSymbol, LongWord *pAddress, Byte *pBitPos, tSymbolSize *pOpSize, Boolean *pForceShort) |
||
| 1100 | * \brief transform compact represenation of bit symbol into components |
||
| 1101 | * \param BitSymbol compact storage |
||
| 1102 | * \param pAddress (I/O) register address |
||
| 1103 | * \param pBitPos (start) bit position |
||
| 1104 | * \param pOpSize returns register size (0/1 for 8/16 bits) |
||
| 1105 | * \param pForceShort returns force of short address in segmented mode |
||
| 1106 | * \return constant True |
||
| 1107 | * ------------------------------------------------------------------------ */ |
||
| 1108 | |||
| 1109 | static Boolean DissectBitSymbol(LongWord BitSymbol, LongWord *pAddress, Byte *pBitPos, tSymbolSize *pOpSize, Boolean *pForceShort) |
||
| 1110 | { |
||
| 1111 | *pForceShort = ((BitSymbol >> 29) & 1); |
||
| 1112 | *pOpSize = (tSymbolSize)((BitSymbol >> 28) & 1); |
||
| 1113 | switch (*pOpSize) |
||
| 1114 | { |
||
| 1115 | case eSymbolSize8Bit: |
||
| 1116 | *pAddress = (BitSymbol >> 3) & 0x7ffffful; |
||
| 1117 | *pBitPos = BitSymbol & 7; |
||
| 1118 | break; |
||
| 1119 | case eSymbolSize16Bit: |
||
| 1120 | *pAddress = (BitSymbol >> 4) & 0x7ffffful; |
||
| 1121 | *pBitPos = BitSymbol & 15; |
||
| 1122 | break; |
||
| 1123 | default: |
||
| 1124 | break; |
||
| 1125 | } |
||
| 1126 | return True; |
||
| 1127 | } |
||
| 1128 | |||
| 1129 | /*!------------------------------------------------------------------------ |
||
| 1130 | * \fn DissectBit_Z8000(char *pDest, size_t DestSize, LargeWord Inp) |
||
| 1131 | * \brief dissect compact storage of bit into readable form for listing |
||
| 1132 | * \param pDest destination for ASCII representation |
||
| 1133 | * \param DestSize destination buffer size |
||
| 1134 | * \param Inp compact storage |
||
| 1135 | * ------------------------------------------------------------------------ */ |
||
| 1136 | |||
| 1137 | static void DissectBit_Z8000(char *pDest, size_t DestSize, LargeWord Inp) |
||
| 1138 | { |
||
| 1139 | Byte BitPos; |
||
| 1140 | LongWord Address; |
||
| 1141 | tSymbolSize OpSize; |
||
| 1142 | Boolean ForceShort; |
||
| 1143 | char Attribute; |
||
| 1144 | |||
| 1145 | DissectBitSymbol(Inp, &Address, &BitPos, &OpSize, &ForceShort); |
||
| 1146 | Attribute = "bw"[OpSize]; |
||
| 1147 | if (HexStartCharacter == 'A') |
||
| 1148 | Attribute = as_toupper(Attribute); |
||
| 1149 | as_snprintf(pDest, DestSize, "%s%~.*u%s%s(%c).%u", |
||
| 1150 | ForceShort ? "|" : "", |
||
| 1151 | ListRadixBase, (unsigned)Address, GetIntConstIntelSuffix(ListRadixBase), |
||
| 1152 | ForceShort ? "|" : "", |
||
| 1153 | Attribute, (unsigned)BitPos); |
||
| 1154 | } |
||
| 1155 | |||
| 1156 | /*!------------------------------------------------------------------------ |
||
| 1157 | * \fn ExpandZ8000Bit(const tStrComp *pVarName, const struct sStructElem *pStructElem, LargeWord Base) |
||
| 1158 | * \brief expands bit definition when a structure is instantiated |
||
| 1159 | * \param pVarName desired symbol name |
||
| 1160 | * \param pStructElem element definition |
||
| 1161 | * \param Base base address of instantiated structure |
||
| 1162 | * ------------------------------------------------------------------------ */ |
||
| 1163 | |||
| 1164 | static void ExpandZ8000Bit(const tStrComp *pVarName, const struct sStructElem *pStructElem, LargeWord Base) |
||
| 1165 | { |
||
| 1166 | LongWord Address = Base + pStructElem->Offset; |
||
| 1167 | |||
| 1168 | if (pInnermostNamedStruct) |
||
| 1169 | { |
||
| 1170 | PStructElem pElem = CloneStructElem(pVarName, pStructElem); |
||
| 1171 | |||
| 1172 | if (!pElem) |
||
| 1173 | return; |
||
| 1174 | pElem->Offset = Address; |
||
| 1175 | AddStructElem(pInnermostNamedStruct->StructRec, pElem); |
||
| 1176 | } |
||
| 1177 | else |
||
| 1178 | { |
||
| 1179 | tSymbolSize OpSize = (pStructElem->OpSize == eSymbolSizeUnknown) ? eSymbolSize8Bit : pStructElem->OpSize; |
||
| 1180 | |||
| 1181 | if (!ChkRange(Address, 0, 0x7fffff) |
||
| 1182 | || !ChkRange(pStructElem->BitPos, 0, (8 << OpSize) - 1)) |
||
| 1183 | return; |
||
| 1184 | |||
| 1185 | PushLocHandle(-1); |
||
| 1186 | EnterIntSymbol(pVarName, AssembleBitSymbol(pStructElem->BitPos, OpSize, Address, False), SegBData, False); |
||
| 1187 | PopLocHandle(); |
||
| 1188 | /* TODO: MakeUseList? */ |
||
| 1189 | } |
||
| 1190 | } |
||
| 1191 | |||
| 1192 | /*!------------------------------------------------------------------------ |
||
| 1193 | * \fn SetOpSizeFromCode(Word Code) |
||
| 1194 | * \brief set operand size of instruction from insn name |
||
| 1195 | * \param Code contains size in MSB |
||
| 1196 | * ------------------------------------------------------------------------ */ |
||
| 1197 | |||
| 1198 | static Boolean SetOpSizeFromCode(Word Code) |
||
| 1199 | { |
||
| 1200 | Byte Size = Hi(Code); |
||
| 1201 | |||
| 1202 | return SetOpSize((Size == 0xff) ? eSymbolSizeUnknown : (tSymbolSize)Size, &OpPart); |
||
| 1203 | } |
||
| 1204 | |||
| 1205 | /*!------------------------------------------------------------------------ |
||
| 1206 | * \fn AppendCode(Word Code) |
||
| 1207 | * \brief append instruction word |
||
| 1208 | * \param pVals code word to append |
||
| 1209 | * ------------------------------------------------------------------------ */ |
||
| 1210 | |||
| 1211 | static void AppendCode(Word Code) |
||
| 1212 | { |
||
| 1213 | WAsmCode[CodeLen >> 1] = Code; |
||
| 1214 | CodeLen += 2; |
||
| 1215 | } |
||
| 1216 | |||
| 1217 | /*!------------------------------------------------------------------------ |
||
| 1218 | * \fn AppendAdrVals(const tAdrVals *pVals) |
||
| 1219 | * \brief append address argument(s) |
||
| 1220 | * \param pVals values to append |
||
| 1221 | * ------------------------------------------------------------------------ */ |
||
| 1222 | |||
| 1223 | static void AppendAdrVals(const tAdrVals *pVals) |
||
| 1224 | { |
||
| 1225 | memcpy(&WAsmCode[CodeLen >> 1], pVals->Vals, pVals->Cnt << 1); |
||
| 1226 | CodeLen += pVals->Cnt << 1; |
||
| 1227 | } |
||
| 1228 | |||
| 1229 | /*!------------------------------------------------------------------------ |
||
| 1230 | * \fn DecodeCondition(const tStrComp *pArg, Word *pCondition) |
||
| 1231 | * \brief decode condition argument |
||
| 1232 | * \param pArg source argument (NULL for non-present condition) |
||
| 1233 | * \param pCondition result buffer |
||
| 1234 | * \return True if found |
||
| 1235 | * ------------------------------------------------------------------------ */ |
||
| 1236 | |||
| 1237 | static Boolean DecodeCondition(const tStrComp *pArg, Word *pCondition) |
||
| 1238 | { |
||
| 1239 | int z; |
||
| 1240 | |||
| 1241 | for (z = 0; Conditions[z].pName; z++) |
||
| 1242 | if (!as_strcasecmp(pArg ? pArg->str.p_str : "", Conditions[z].pName)) |
||
| 1243 | { |
||
| 1244 | *pCondition = Conditions[z].Code; |
||
| 1245 | return True; |
||
| 1246 | } |
||
| 1247 | WrStrErrorPos(ErrNum_UndefCond, pArg); |
||
| 1248 | return False; |
||
| 1249 | } |
||
| 1250 | |||
| 1251 | /*!------------------------------------------------------------------------ |
||
| 1252 | * \fn DecodeImm1_16(const tStrComp *pArg, tEvalResult *pEvalResult) |
||
| 1253 | * \brief decode immediate argument from 1..16 and return as 0..15 |
||
| 1254 | * \param pArg source argument |
||
| 1255 | * \param pEvalResult evaluation result |
||
| 1256 | * \return value |
||
| 1257 | * ------------------------------------------------------------------------ */ |
||
| 1258 | |||
| 1259 | static Word DecodeImm1_16(const tStrComp *pArg, tEvalResult *pEvalResult) |
||
| 1260 | { |
||
| 1261 | Word Result; |
||
| 1262 | |||
| 1263 | Result = EvalStrIntExpressionOffsWithResult(pArg, !!(*pArg->str.p_str == '#'), UInt5, pEvalResult); |
||
| 1264 | if (pEvalResult->OK) |
||
| 1265 | { |
||
| 1266 | if (mFirstPassUnknownOrQuestionable(pEvalResult->Flags)) |
||
| 1267 | Result = 1; |
||
| 1268 | else |
||
| 1269 | pEvalResult->OK = ChkRange(Result, 1, 16); |
||
| 1270 | Result--; |
||
| 1271 | } |
||
| 1272 | return Result; |
||
| 1273 | } |
||
| 1274 | |||
| 1275 | /*--------------------------------------------------------------------------*/ |
||
| 1276 | /* Instruction Decoders */ |
||
| 1277 | |||
| 1278 | /*!------------------------------------------------------------------------ |
||
| 1279 | * \fn DecodeFixed(Word Index) |
||
| 1280 | * \brief decode instruction without arguments |
||
| 1281 | * \param Index machine code of instruction |
||
| 1282 | * ------------------------------------------------------------------------ */ |
||
| 1283 | |||
| 1284 | static void DecodeFixed(Word Index) |
||
| 1285 | { |
||
| 1286 | const FixedOrder *pOrder = FixedOrders + Index; |
||
| 1287 | |||
| 1288 | if (ChkArgCnt(0, 0) |
||
| 1289 | && CheckSup(pOrder->Privileged)) |
||
| 1290 | { |
||
| 1291 | CodeLen = 2; |
||
| 1292 | WAsmCode[0] = pOrder->Code; |
||
| 1293 | } |
||
| 1294 | } |
||
| 1295 | |||
| 1296 | /*!------------------------------------------------------------------------ |
||
| 1297 | * \fn DecodeLD(Word Code) |
||
| 1298 | * \brief decode LD/LDB/LDL instruction |
||
| 1299 | * \param Code instruction type |
||
| 1300 | * ------------------------------------------------------------------------ */ |
||
| 1301 | |||
| 1302 | static void DecodeLD(Word Code) |
||
| 1303 | { |
||
| 1304 | tAdrVals DestAdrVals; |
||
| 1305 | |||
| 1306 | if (!SetOpSizeFromCode(Code) |
||
| 1307 | || !ChkArgCnt(2, 2)) |
||
| 1308 | return; |
||
| 1309 | |||
| 1310 | switch (DecodeAdr(&ArgStr[1], MModNoImm, &DestAdrVals)) |
||
| 1311 | { |
||
| 1312 | case eModReg: |
||
| 1313 | { |
||
| 1314 | tAdrVals SrcAdrVals; |
||
| 1315 | |||
| 1316 | switch (DecodeAdr(&ArgStr[2], MModAll, &SrcAdrVals)) |
||
| 1317 | { |
||
| 1318 | case eModReg: |
||
| 1319 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x9400 : (0xa000 | (OpSize << 8))) |
||
| 1320 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1321 | break; |
||
| 1322 | case eModIReg: |
||
| 1323 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x1400 : (0x2000 | (OpSize << 8))) |
||
| 1324 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1325 | break; |
||
| 1326 | case eModDirect: |
||
| 1327 | case eModIndexed: |
||
| 1328 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x5400 : (0x6000 | (OpSize << 8))) |
||
| 1329 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1330 | AppendAdrVals(&SrcAdrVals); |
||
| 1331 | break; |
||
| 1332 | case eModBaseAddress: |
||
| 1333 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x3500 : (0x3000 | (OpSize << 8))) |
||
| 1334 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1335 | AppendAdrVals(&SrcAdrVals); |
||
| 1336 | break; |
||
| 1337 | case eModBaseIndexed: |
||
| 1338 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x7500 : (0x7000 | (OpSize << 8))) |
||
| 1339 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1340 | AppendAdrVals(&SrcAdrVals); |
||
| 1341 | break; |
||
| 1342 | case eModImm: |
||
| 1343 | if (OpSize == eSymbolSize8Bit) |
||
| 1344 | AppendCode(0xc000 | (DestAdrVals.Val << 8) | (SrcAdrVals.Vals[0] & 0xff)); |
||
| 1345 | #if OPT_LD_LDK |
||
| 1346 | else if ((OpSize == eSymbolSize16Bit) && (SrcAdrVals.Vals[0] < 16)) |
||
| 1347 | AppendCode(0xbd00 | (DestAdrVals.Val << 4) | (SrcAdrVals.Vals[0] & 0x0f)); |
||
| 1348 | #endif |
||
| 1349 | else |
||
| 1350 | { |
||
| 1351 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x1400 : (0x2000 | (OpSize << 8))) |
||
| 1352 | | DestAdrVals.Val); |
||
| 1353 | AppendAdrVals(&SrcAdrVals); |
||
| 1354 | } |
||
| 1355 | break; |
||
| 1356 | default: |
||
| 1357 | break; |
||
| 1358 | } |
||
| 1359 | break; |
||
| 1360 | } |
||
| 1361 | case eModIReg: |
||
| 1362 | { |
||
| 1363 | tAdrVals SrcAdrVals; |
||
| 1364 | |||
| 1365 | ImmOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 1366 | switch (DecodeAdr(&ArgStr[2], MModReg | MModImm, &SrcAdrVals)) |
||
| 1367 | { |
||
| 1368 | case eModReg: |
||
| 1369 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x1d00 : (0x2e00 | (OpSize << 8))) |
||
| 1370 | | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1371 | break; |
||
| 1372 | case eModImm: |
||
| 1373 | if (OpSize > eSymbolSize16Bit) WrStrErrorPos(ErrNum_InvOpSize, &OpPart); |
||
| 1374 | else |
||
| 1375 | { |
||
| 1376 | AppendCode(0x0c05 | (OpSize << 8) | (DestAdrVals.Val << 4)); |
||
| 1377 | AppendAdrVals(&SrcAdrVals); |
||
| 1378 | } |
||
| 1379 | break; |
||
| 1380 | default: |
||
| 1381 | break; |
||
| 1382 | } |
||
| 1383 | break; |
||
| 1384 | } |
||
| 1385 | case eModDirect: |
||
| 1386 | case eModIndexed: |
||
| 1387 | { |
||
| 1388 | tAdrVals SrcAdrVals; |
||
| 1389 | |||
| 1390 | ImmOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 1391 | switch (DecodeAdr(&ArgStr[2], MModReg | MModImm, &SrcAdrVals)) |
||
| 1392 | { |
||
| 1393 | case eModReg: |
||
| 1394 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x5d00 : (0x6e00 | (OpSize << 8))) |
||
| 1395 | | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1396 | AppendAdrVals(&DestAdrVals); |
||
| 1397 | break; |
||
| 1398 | case eModImm: |
||
| 1399 | if (OpSize > eSymbolSize16Bit) WrStrErrorPos(ErrNum_InvOpSize, &OpPart); |
||
| 1400 | else |
||
| 1401 | { |
||
| 1402 | AppendCode(0x4c05 | (OpSize << 8) | (DestAdrVals.Val << 4)); |
||
| 1403 | AppendAdrVals(&DestAdrVals); |
||
| 1404 | AppendAdrVals(&SrcAdrVals); |
||
| 1405 | } |
||
| 1406 | break; |
||
| 1407 | default: |
||
| 1408 | break; |
||
| 1409 | } |
||
| 1410 | break; |
||
| 1411 | } |
||
| 1412 | case eModBaseAddress: |
||
| 1413 | { |
||
| 1414 | tAdrVals SrcAdrVals; |
||
| 1415 | |||
| 1416 | if (DecodeAdr(&ArgStr[2], MModReg, &SrcAdrVals) == eModReg) |
||
| 1417 | { |
||
| 1418 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x3700 : (0x3200 | (OpSize << 8))) |
||
| 1419 | | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1420 | AppendAdrVals(&DestAdrVals); |
||
| 1421 | } |
||
| 1422 | break; |
||
| 1423 | } |
||
| 1424 | case eModBaseIndexed: |
||
| 1425 | { |
||
| 1426 | tAdrVals SrcAdrVals; |
||
| 1427 | |||
| 1428 | if (DecodeAdr(&ArgStr[2], MModReg, &SrcAdrVals) == eModReg) |
||
| 1429 | { |
||
| 1430 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x7700 : (0x7200 | (OpSize << 8))) |
||
| 1431 | | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1432 | AppendAdrVals(&DestAdrVals); |
||
| 1433 | } |
||
| 1434 | break; |
||
| 1435 | } |
||
| 1436 | default: |
||
| 1437 | break; |
||
| 1438 | } |
||
| 1439 | } |
||
| 1440 | |||
| 1441 | /*!------------------------------------------------------------------------ |
||
| 1442 | * \fn DecodeLDA(Word Code) |
||
| 1443 | * \brief decode LDA instruction |
||
| 1444 | * ------------------------------------------------------------------------ */ |
||
| 1445 | |||
| 1446 | static void DecodeLDA(Word Code) |
||
| 1447 | { |
||
| 1448 | tAdrVals DestAdrVals, SrcAdrVals; |
||
| 1449 | |||
| 1450 | UNUSED(Code); |
||
| 1451 | |||
| 1452 | SetOpSize(AddrRegSize(), &OpPart); |
||
| 1453 | if (ChkArgCnt(2, 2) |
||
| 1454 | && DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals)) |
||
| 1455 | switch (DecodeAdr(&ArgStr[2], MModDirect | MModIndexed | MModBaseAddress | MModBaseIndexed, &SrcAdrVals)) |
||
| 1456 | { |
||
| 1457 | case eModDirect: |
||
| 1458 | case eModIndexed: |
||
| 1459 | AppendCode(0x7600 | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1460 | AppendAdrVals(&SrcAdrVals); |
||
| 1461 | break; |
||
| 1462 | case eModBaseAddress: |
||
| 1463 | AppendCode(0x3400 | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1464 | AppendAdrVals(&SrcAdrVals); |
||
| 1465 | break; |
||
| 1466 | case eModBaseIndexed: |
||
| 1467 | AppendCode(0x7400 | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1468 | AppendAdrVals(&SrcAdrVals); |
||
| 1469 | break; |
||
| 1470 | default: |
||
| 1471 | break; |
||
| 1472 | } |
||
| 1473 | } |
||
| 1474 | |||
| 1475 | /*!------------------------------------------------------------------------ |
||
| 1476 | * \fn DecodeLDAR(Word Code) |
||
| 1477 | * \brief decode LDAR instruction |
||
| 1478 | * ------------------------------------------------------------------------ */ |
||
| 1479 | |||
| 1480 | static void DecodeLDAR(Word Code) |
||
| 1481 | { |
||
| 1482 | tAdrVals DestAdrVals; |
||
| 1483 | |||
| 1484 | SetOpSize(AddrRegSize(), &OpPart); |
||
| 1485 | if (ChkArgCnt(2, 2) |
||
| 1486 | && DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals)) |
||
| 1487 | { |
||
| 1488 | tEvalResult EvalResult; |
||
| 1489 | LongWord Addr = EvalStrIntExpressionWithResult(&ArgStr[2], MemIntType, &EvalResult); |
||
| 1490 | if (EvalResult.OK) |
||
| 1491 | { |
||
| 1492 | Word Delta; |
||
| 1493 | |||
| 1494 | if (!mFirstPassUnknownOrQuestionable(EvalResult.Flags) && (GetSegment(Addr) != GetSegment(EProgCounter()))) |
||
| 1495 | WrStrErrorPos(ErrNum_InAccSegment, &ArgStr[2]); |
||
| 1496 | |||
| 1497 | Delta = (Addr & 0xffff) - ((EProgCounter() + 4) & 0xffff); |
||
| 1498 | AppendCode(Code | DestAdrVals.Val); |
||
| 1499 | AppendCode(Delta); |
||
| 1500 | } |
||
| 1501 | } |
||
| 1502 | } |
||
| 1503 | |||
| 1504 | /*!------------------------------------------------------------------------ |
||
| 1505 | * \fn DecodeLDCTL(Word Code) |
||
| 1506 | * \brief decode LDCTL(B) instruction |
||
| 1507 | * ------------------------------------------------------------------------ */ |
||
| 1508 | |||
| 1509 | static void DecodeLDCTL(Word Code) |
||
| 1510 | { |
||
| 1511 | tAdrVals DestAdrVals; |
||
| 1512 | |||
| 1513 | UNUSED(Code); |
||
| 1514 | if (SetOpSizeFromCode(Code) |
||
| 1515 | && ChkArgCnt(2, 2) |
||
| 1516 | && CheckSup(True)) |
||
| 1517 | switch (DecodeAdr(&ArgStr[1], MModReg | MModCtl, &DestAdrVals)) |
||
| 1518 | { |
||
| 1519 | case eModReg: |
||
| 1520 | { |
||
| 1521 | tAdrVals SrcAdrVals; |
||
| 1522 | |||
| 1523 | if (DecodeAdr(&ArgStr[2], MModCtl, &SrcAdrVals)) |
||
| 1524 | AppendCode((OpSize ? 0x7d00 : 0x8c00) | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1525 | break; |
||
| 1526 | } |
||
| 1527 | case eModCtl: |
||
| 1528 | { |
||
| 1529 | tAdrVals SrcAdrVals; |
||
| 1530 | |||
| 1531 | if (DecodeAdr(&ArgStr[2], MModReg, &SrcAdrVals)) |
||
| 1532 | AppendCode((OpSize ? 0x7d08 : 0x8c08) | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1533 | break; |
||
| 1534 | } |
||
| 1535 | default: |
||
| 1536 | break; |
||
| 1537 | } |
||
| 1538 | } |
||
| 1539 | |||
| 1540 | /*!------------------------------------------------------------------------ |
||
| 1541 | * \fn DecodeLDR(Word Code) |
||
| 1542 | * \brief decode LDR[L|B] |
||
| 1543 | * \param Code machine code |
||
| 1544 | * ------------------------------------------------------------------------ */ |
||
| 1545 | |||
| 1546 | static void DecodeLDR(Word Code) |
||
| 1547 | { |
||
| 1548 | Word Reg; |
||
| 1549 | tSymbolSize RegSize; |
||
| 1550 | int RegArgIndex = 1; |
||
| 1551 | |||
| 1552 | if (SetOpSizeFromCode(Code) |
||
| 1553 | && ChkArgCnt(2, 2)) |
||
| 1554 | switch (DecodeReg(&ArgStr[RegArgIndex], &Reg, &RegSize, ChkRegSize_8To32, False)) |
||
| 1555 | { |
||
| 1556 | case eIsNoReg: |
||
| 1557 | RegArgIndex = 2; |
||
| 1558 | if (DecodeReg(&ArgStr[RegArgIndex], &Reg, &RegSize, ChkRegSize_8To32, True) != eIsReg) |
||
| 1559 | return; |
||
| 1560 | Code |= 2; |
||
| 1561 | /* fall-thru */ |
||
| 1562 | case eIsReg: |
||
| 1563 | { |
||
| 1564 | tEvalResult EvalResult; |
||
| 1565 | LongWord Addr; |
||
| 1566 | |||
| 1567 | if (!SetOpSize(RegSize, &ArgStr[RegArgIndex])) |
||
| 1568 | return; |
||
| 1569 | if (OpSize > eSymbolSize32Bit) |
||
| 1570 | { |
||
| 1571 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[RegArgIndex]); |
||
| 1572 | return; |
||
| 1573 | } |
||
| 1574 | |||
| 1575 | Addr = EvalStrIntExpressionWithResult(&ArgStr[3 - RegArgIndex], MemIntType, &EvalResult); |
||
| 1576 | if (EvalResult.OK) |
||
| 1577 | { |
||
| 1578 | Word Delta; |
||
| 1579 | |||
| 1580 | if (!mFirstPassUnknownOrQuestionable(EvalResult.Flags) && (GetSegment(Addr) != GetSegment(EProgCounter()))) |
||
| 1581 | WrStrErrorPos(ErrNum_InAccSegment, &ArgStr[2]); |
||
| 1582 | |||
| 1583 | Delta = (Addr & 0xffff) - ((EProgCounter() + 4) & 0xffff); |
||
| 1584 | AppendCode(((Lo(Code) | ((OpSize == eSymbolSize32Bit) ? 0x5 : OpSize)) << 8) | Reg); |
||
| 1585 | AppendCode(Delta); |
||
| 1586 | } |
||
| 1587 | break; |
||
| 1588 | } |
||
| 1589 | case eRegAbort: |
||
| 1590 | break; |
||
| 1591 | } |
||
| 1592 | } |
||
| 1593 | |||
| 1594 | /*!------------------------------------------------------------------------ |
||
| 1595 | * \fn DecodeADD(Word Code) |
||
| 1596 | * \brief decode ADD/ADDB/ADDL instruction |
||
| 1597 | * \param Code instruction type |
||
| 1598 | * ------------------------------------------------------------------------ */ |
||
| 1599 | |||
| 1600 | static void DecodeADD(Word Code) |
||
| 1601 | { |
||
| 1602 | tAdrVals DestAdrVals; |
||
| 1603 | |||
| 1604 | if (!SetOpSizeFromCode(Code) |
||
| 1605 | || !ChkArgCnt(2, 2)) |
||
| 1606 | return; |
||
| 1607 | |||
| 1608 | if (DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals) == eModReg) |
||
| 1609 | { |
||
| 1610 | tAdrVals SrcAdrVals; |
||
| 1611 | |||
| 1612 | switch (DecodeAdr(&ArgStr[2], MModReg | MModImm | MModIReg | MModDirect | MModIndexed, &SrcAdrVals)) |
||
| 1613 | { |
||
| 1614 | case eModReg: |
||
| 1615 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x9600 : (0x8000 | (OpSize << 8))) |
||
| 1616 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1617 | break; |
||
| 1618 | case eModIReg: |
||
| 1619 | case eModImm: |
||
| 1620 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x1600 : (0x0000 | (OpSize << 8))) |
||
| 1621 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1622 | AppendAdrVals(&SrcAdrVals); |
||
| 1623 | break; |
||
| 1624 | case eModDirect: |
||
| 1625 | case eModIndexed: |
||
| 1626 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x5600 : (0x4000 | (OpSize << 8))) |
||
| 1627 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1628 | AppendAdrVals(&SrcAdrVals); |
||
| 1629 | break; |
||
| 1630 | default: |
||
| 1631 | break; |
||
| 1632 | } |
||
| 1633 | } |
||
| 1634 | } |
||
| 1635 | |||
| 1636 | /*!------------------------------------------------------------------------ |
||
| 1637 | * \fn DecodeSUB(Word Code) |
||
| 1638 | * \brief decode SUB/SUBB/SUBL instruction |
||
| 1639 | * \param Code instruction type |
||
| 1640 | * ------------------------------------------------------------------------ */ |
||
| 1641 | |||
| 1642 | static void DecodeSUB(Word Code) |
||
| 1643 | { |
||
| 1644 | tAdrVals DestAdrVals; |
||
| 1645 | |||
| 1646 | if (!SetOpSizeFromCode(Code) |
||
| 1647 | || !ChkArgCnt(2, 2)) |
||
| 1648 | return; |
||
| 1649 | |||
| 1650 | if (DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals) == eModReg) |
||
| 1651 | { |
||
| 1652 | tAdrVals SrcAdrVals; |
||
| 1653 | |||
| 1654 | switch (DecodeAdr(&ArgStr[2], MModReg | MModImm | MModIReg | MModDirect | MModIndexed, &SrcAdrVals)) |
||
| 1655 | { |
||
| 1656 | case eModReg: |
||
| 1657 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x9200 : (0x8200 | (OpSize << 8))) |
||
| 1658 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1659 | break; |
||
| 1660 | case eModIReg: |
||
| 1661 | case eModImm: |
||
| 1662 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x1200 : (0x0200 | (OpSize << 8))) |
||
| 1663 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1664 | AppendAdrVals(&SrcAdrVals); |
||
| 1665 | break; |
||
| 1666 | case eModDirect: |
||
| 1667 | case eModIndexed: |
||
| 1668 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x5200 : (0x4200 | (OpSize << 8))) |
||
| 1669 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1670 | AppendAdrVals(&SrcAdrVals); |
||
| 1671 | break; |
||
| 1672 | default: |
||
| 1673 | break; |
||
| 1674 | } |
||
| 1675 | } |
||
| 1676 | } |
||
| 1677 | |||
| 1678 | /*!------------------------------------------------------------------------ |
||
| 1679 | * \fn DecodeCP(Word Code) |
||
| 1680 | * \brief decode CP/CPB/CPL instruction |
||
| 1681 | * \param Code instruction type |
||
| 1682 | * ------------------------------------------------------------------------ */ |
||
| 1683 | |||
| 1684 | static void DecodeCP(Word Code) |
||
| 1685 | { |
||
| 1686 | tAdrVals DestAdrVals; |
||
| 1687 | |||
| 1688 | if (!SetOpSizeFromCode(Code) |
||
| 1689 | || !ChkArgCnt(2, 2)) |
||
| 1690 | return; |
||
| 1691 | |||
| 1692 | switch (DecodeAdr(&ArgStr[1], MModReg | MModIReg | MModDirect | MModIndexed, &DestAdrVals)) |
||
| 1693 | { |
||
| 1694 | case eModReg: |
||
| 1695 | { |
||
| 1696 | tAdrVals SrcAdrVals; |
||
| 1697 | |||
| 1698 | switch (DecodeAdr(&ArgStr[2], MModReg | MModImm | MModIReg | MModDirect | MModIndexed, &SrcAdrVals)) |
||
| 1699 | { |
||
| 1700 | case eModReg: |
||
| 1701 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x9000 : (0x8a00 | (OpSize << 8))) |
||
| 1702 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1703 | break; |
||
| 1704 | case eModIReg: |
||
| 1705 | case eModImm: |
||
| 1706 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x1000 : (0x0a00 | (OpSize << 8))) |
||
| 1707 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1708 | AppendAdrVals(&SrcAdrVals); |
||
| 1709 | break; |
||
| 1710 | case eModDirect: |
||
| 1711 | case eModIndexed: |
||
| 1712 | AppendCode(((OpSize == eSymbolSize32Bit) ? 0x5000 : (0x4a00 | (OpSize << 8))) |
||
| 1713 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1714 | AppendAdrVals(&SrcAdrVals); |
||
| 1715 | break; |
||
| 1716 | default: |
||
| 1717 | break; |
||
| 1718 | } |
||
| 1719 | break; |
||
| 1720 | } |
||
| 1721 | case eModIReg: |
||
| 1722 | { |
||
| 1723 | tAdrVals SrcAdrVals; |
||
| 1724 | |||
| 1725 | ImmOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 1726 | if (OpSize == eSymbolSize32Bit) WrStrErrorPos(ErrNum_InvOpSize, &OpPart); |
||
| 1727 | else if (eModImm == DecodeAdr(&ArgStr[2], MModImm, &SrcAdrVals)) |
||
| 1728 | { |
||
| 1729 | AppendCode(0x0c01 | (DestAdrVals.Val << 4) | (OpSize << 8)); |
||
| 1730 | AppendAdrVals(&SrcAdrVals); |
||
| 1731 | } |
||
| 1732 | break; |
||
| 1733 | } |
||
| 1734 | case eModDirect: |
||
| 1735 | case eModIndexed: |
||
| 1736 | { |
||
| 1737 | tAdrVals SrcAdrVals; |
||
| 1738 | |||
| 1739 | ImmOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 1740 | if (OpSize == eSymbolSize32Bit) WrStrErrorPos(ErrNum_InvOpSize, &OpPart); |
||
| 1741 | else if (eModImm == DecodeAdr(&ArgStr[2], MModImm, &SrcAdrVals)) |
||
| 1742 | { |
||
| 1743 | AppendCode(0x4c01 | (DestAdrVals.Val << 4) | (OpSize << 8)); |
||
| 1744 | AppendAdrVals(&DestAdrVals); |
||
| 1745 | AppendAdrVals(&SrcAdrVals); |
||
| 1746 | } |
||
| 1747 | break; |
||
| 1748 | } |
||
| 1749 | default: |
||
| 1750 | break; |
||
| 1751 | } |
||
| 1752 | } |
||
| 1753 | |||
| 1754 | /*!------------------------------------------------------------------------ |
||
| 1755 | * \fn DecodeADC_SBC(Word Code) |
||
| 1756 | * \brief decode ADC/SBC instructions |
||
| 1757 | * \param Code instruction type |
||
| 1758 | * ------------------------------------------------------------------------ */ |
||
| 1759 | |||
| 1760 | static void DecodeADC_SBC(Word Code) |
||
| 1761 | { |
||
| 1762 | tAdrVals DestAdrVals, SrcAdrVals; |
||
| 1763 | |||
| 1764 | if (!SetOpSizeFromCode(Code) |
||
| 1765 | || !ChkArgCnt(2, 2)) |
||
| 1766 | return; |
||
| 1767 | |||
| 1768 | if ((DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals) == eModReg) |
||
| 1769 | && (DecodeAdr(&ArgStr[2], MModReg, &SrcAdrVals) == eModReg)) |
||
| 1770 | { |
||
| 1771 | if (OpSize > eSymbolSize16Bit) WrError(ErrNum_InvOpSize); |
||
| 1772 | else |
||
| 1773 | AppendCode(0x8000 | (((Code & 0xfe) | OpSize) << 8) |
||
| 1774 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1775 | } |
||
| 1776 | } |
||
| 1777 | |||
| 1778 | /*!------------------------------------------------------------------------ |
||
| 1779 | * \fn DecodeAND_OR_XOR(Word Code) |
||
| 1780 | * \brief decode AND/OR/XOR instructions |
||
| 1781 | * \param Code instruction type |
||
| 1782 | * ------------------------------------------------------------------------ */ |
||
| 1783 | |||
| 1784 | static void DecodeAND_OR_XOR(Word Code) |
||
| 1785 | { |
||
| 1786 | tAdrVals DestAdrVals; |
||
| 1787 | |||
| 1788 | if (!SetOpSizeFromCode(Code) |
||
| 1789 | || !ChkArgCnt(2, 2)) |
||
| 1790 | return; |
||
| 1791 | |||
| 1792 | if (DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals) == eModReg) |
||
| 1793 | { |
||
| 1794 | tAdrVals SrcAdrVals; |
||
| 1795 | |||
| 1796 | if (OpSize > eSymbolSize16Bit) WrError(ErrNum_InvOpSize); |
||
| 1797 | else switch (DecodeAdr(&ArgStr[2], MModReg | MModImm | MModIReg | MModDirect | MModIndexed, &SrcAdrVals)) |
||
| 1798 | { |
||
| 1799 | case eModReg: |
||
| 1800 | AppendCode(0x8000 | (((Code & 0xfe) | OpSize) << 8) |
||
| 1801 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1802 | break; |
||
| 1803 | case eModIReg: |
||
| 1804 | case eModImm: |
||
| 1805 | AppendCode(0x0000 | (((Code & 0xfe) | OpSize) << 8) |
||
| 1806 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1807 | AppendAdrVals(&SrcAdrVals); |
||
| 1808 | break; |
||
| 1809 | case eModDirect: |
||
| 1810 | case eModIndexed: |
||
| 1811 | AppendCode(0x4000 | (((Code & 0xfe) | OpSize) << 8) |
||
| 1812 | | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 1813 | AppendAdrVals(&SrcAdrVals); |
||
| 1814 | break; |
||
| 1815 | default: |
||
| 1816 | break; |
||
| 1817 | } |
||
| 1818 | } |
||
| 1819 | } |
||
| 1820 | |||
| 1821 | /*!------------------------------------------------------------------------ |
||
| 1822 | * \fn DecodeINC_DEC(Word Code) |
||
| 1823 | * \brief decode increment/decrement instructions |
||
| 1824 | * \param Code instruction type |
||
| 1825 | * ------------------------------------------------------------------------ */ |
||
| 1826 | |||
| 1827 | static void DecodeINC_DEC(Word Code) |
||
| 1828 | { |
||
| 1829 | tAdrVals AdrVals; |
||
| 1830 | |||
| 1831 | if (SetOpSizeFromCode(Code) |
||
| 1832 | && ChkArgCnt(1, 2) |
||
| 1833 | && DecodeAdr(&ArgStr[1], MModReg | MModIReg | MModDirect | MModIndexed, &AdrVals)) |
||
| 1834 | { |
||
| 1835 | if (OpSize == eSymbolSizeUnknown) |
||
| 1836 | OpSize = eSymbolSize16Bit; |
||
| 1837 | if (OpSize > eSymbolSize16Bit) WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 1838 | else |
||
| 1839 | { |
||
| 1840 | tEvalResult EvalResult; |
||
| 1841 | Word ImmVal = 0; |
||
| 1842 | |||
| 1843 | if (2 == ArgCnt) |
||
| 1844 | ImmVal = DecodeImm1_16(&ArgStr[2], &EvalResult); |
||
| 1845 | else |
||
| 1846 | EvalResult.OK = True; |
||
| 1847 | |||
| 1848 | if (EvalResult.OK) |
||
| 1849 | switch (AdrVals.Mode) |
||
| 1850 | { |
||
| 1851 | case eModReg: |
||
| 1852 | AppendCode(0x8000 | ((Code | OpSize) << 8) | (AdrVals.Val << 4) | ImmVal); |
||
| 1853 | break; |
||
| 1854 | case eModIReg: |
||
| 1855 | AppendCode(0x0000 | ((Code | OpSize) << 8) | (AdrVals.Val << 4) | ImmVal); |
||
| 1856 | break; |
||
| 1857 | case eModDirect: |
||
| 1858 | case eModIndexed: |
||
| 1859 | AppendCode(0x4000 | ((Code | OpSize) << 8) | (AdrVals.Val << 4) | ImmVal); |
||
| 1860 | AppendAdrVals(&AdrVals); |
||
| 1861 | break; |
||
| 1862 | default: |
||
| 1863 | break; |
||
| 1864 | } |
||
| 1865 | } |
||
| 1866 | } |
||
| 1867 | } |
||
| 1868 | |||
| 1869 | /*!------------------------------------------------------------------------ |
||
| 1870 | * \fn DecodeBitOp(Word Code) |
||
| 1871 | * \brief decode bit set/reset/test instructions |
||
| 1872 | * \param Code instruction type |
||
| 1873 | * ------------------------------------------------------------------------ */ |
||
| 1874 | |||
| 1875 | static void DecodeBitOp(Word Code) |
||
| 1876 | { |
||
| 1877 | tAdrVals DestAdrVals, SrcAdrVals; |
||
| 1878 | tSymbolSize DestOpSize; |
||
| 1879 | |||
| 1880 | if (!SetOpSizeFromCode(Code)) |
||
| 1881 | return; |
||
| 1882 | |||
| 1883 | switch (ArgCnt) |
||
| 1884 | { |
||
| 1885 | case 1: |
||
| 1886 | { |
||
| 1887 | LongWord PacketBit; |
||
| 1888 | |||
| 1889 | if (DecodeBitArg(&PacketBit, 1, 1, OpSize)) |
||
| 1890 | { |
||
| 1891 | LongWord Address; |
||
| 1892 | Byte BitPos; |
||
| 1893 | Boolean ForceShort; |
||
| 1894 | |||
| 1895 | if (DissectBitSymbol(PacketBit, &Address, &BitPos, &DestOpSize, &ForceShort) |
||
| 1896 | && SetOpSize(DestOpSize, &ArgStr[1])) |
||
| 1897 | { |
||
| 1898 | ClearAdrVals(&SrcAdrVals); |
||
| 1899 | SrcAdrVals.Val = BitPos; |
||
| 1900 | ClearAdrVals(&DestAdrVals); |
||
| 1901 | FillAbsAddr(&DestAdrVals, Address, False, ForceShort); |
||
| 1902 | goto Abs2Imm; /* yeah! */ |
||
| 1903 | } |
||
| 1904 | } |
||
| 1905 | break; |
||
| 1906 | } |
||
| 1907 | case 2: |
||
| 1908 | if (DecodeAdr(&ArgStr[1], MModReg | MModIReg | MModDirect | MModIndexed, &DestAdrVals)) |
||
| 1909 | { |
||
| 1910 | DestOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 1911 | |||
| 1912 | switch (DestOpSize) |
||
| 1913 | { |
||
| 1914 | case eSymbolSize8Bit: |
||
| 1915 | ImmOpSize = eSymbolSize3Bit; break; |
||
| 1916 | case eSymbolSize16Bit: |
||
| 1917 | ImmOpSize = eSymbolSize4Bit; break; |
||
| 1918 | default: |
||
| 1919 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); return; |
||
| 1920 | } |
||
| 1921 | OpSize = eSymbolSizeUnknown; |
||
| 1922 | |||
| 1923 | switch (DecodeAdr(&ArgStr[2], MModReg | MModImm, &SrcAdrVals)) |
||
| 1924 | { |
||
| 1925 | case eModImm: |
||
| 1926 | switch (DestAdrVals.Mode) |
||
| 1927 | { |
||
| 1928 | case eModReg: |
||
| 1929 | AppendCode(0x8000 | (((Code & 0xfe) | DestOpSize) << 8) |
||
| 1930 | | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1931 | break; |
||
| 1932 | case eModIReg: |
||
| 1933 | AppendCode(0x0000 | (((Code & 0xfe) | DestOpSize) << 8) |
||
| 1934 | | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1935 | break; |
||
| 1936 | case eModDirect: |
||
| 1937 | case eModIndexed: |
||
| 1938 | Abs2Imm: |
||
| 1939 | AppendCode(0x4000 | (((Code & 0xfe) | DestOpSize) << 8) |
||
| 1940 | | (DestAdrVals.Val << 4) | SrcAdrVals.Val); |
||
| 1941 | AppendAdrVals(&DestAdrVals); |
||
| 1942 | break; |
||
| 1943 | default: |
||
| 1944 | break; |
||
| 1945 | } |
||
| 1946 | break; |
||
| 1947 | case eModReg: |
||
| 1948 | switch (DestAdrVals.Mode) |
||
| 1949 | { |
||
| 1950 | case eModReg: |
||
| 1951 | if (OpSize != eSymbolSize16Bit) WrStrErrorPos (ErrNum_InvOpSize, &ArgStr[2]); |
||
| 1952 | else |
||
| 1953 | { |
||
| 1954 | AppendCode(0x0000 | (((Code & 0xfe) | DestOpSize) << 8) | SrcAdrVals.Val); |
||
| 1955 | AppendCode(DestAdrVals.Val << 8); |
||
| 1956 | } |
||
| 1957 | break; |
||
| 1958 | case eModNone: |
||
| 1959 | break; |
||
| 1960 | default: |
||
| 1961 | WrStrErrorPos(ErrNum_InvAddrMode, &ArgStr[1]); |
||
| 1962 | } |
||
| 1963 | break; |
||
| 1964 | default: |
||
| 1965 | break; |
||
| 1966 | } |
||
| 1967 | } |
||
| 1968 | break; |
||
| 1969 | default: |
||
| 1970 | (void)ChkArgCnt(1, 2); |
||
| 1971 | } |
||
| 1972 | } |
||
| 1973 | |||
| 1974 | /*!------------------------------------------------------------------------ |
||
| 1975 | * \fn DecodeCALL_JP(Word Code) |
||
| 1976 | * \brief decode jump/call instructions |
||
| 1977 | * \param instruction code |
||
| 1978 | * ------------------------------------------------------------------------ */ |
||
| 1979 | |||
| 1980 | static void DecodeCALL_JP(Word Code) |
||
| 1981 | { |
||
| 1982 | tAdrVals AdrVals; |
||
| 1983 | Boolean IsCALL = Code & 1; |
||
| 1984 | |||
| 1985 | if (ChkArgCnt(1, 2 - IsCALL)) |
||
| 1986 | { |
||
| 1987 | Word Condition; |
||
| 1988 | |||
| 1989 | if (IsCALL) |
||
| 1990 | Condition = 0; |
||
| 1991 | else if (!DecodeCondition((ArgCnt == 2) ? &ArgStr[1] : NULL, &Condition)) |
||
| 1992 | return; |
||
| 1993 | |||
| 1994 | switch (DecodeAdr(&ArgStr[ArgCnt], MModIReg | MModDirect | MModIndexed, &AdrVals)) |
||
| 1995 | { |
||
| 1996 | case eModIReg: |
||
| 1997 | AppendCode(0x0000 | (Code << 8) | (AdrVals.Val << 4) | Condition); |
||
| 1998 | break; |
||
| 1999 | case eModDirect: |
||
| 2000 | case eModIndexed: |
||
| 2001 | AppendCode(0x4000 | (Code << 8) | (AdrVals.Val << 4) | Condition); |
||
| 2002 | AppendAdrVals(&AdrVals); |
||
| 2003 | break; |
||
| 2004 | default: |
||
| 2005 | break; |
||
| 2006 | } |
||
| 2007 | } |
||
| 2008 | } |
||
| 2009 | |||
| 2010 | /*!------------------------------------------------------------------------ |
||
| 2011 | * \fn DecodeBranch(Word CodeWord MaxDist, Boolean Inverse, const tStrComp *pArg) |
||
| 2012 | * \brief relative branch core decode |
||
| 2013 | * \param Code instruction code (upper bits) |
||
| 2014 | * \param MaxDist maximum positive distance (in bytes, e.g. even value) |
||
| 2015 | * \param Inverse Displacement is subtraced and not added by CPU |
||
| 2016 | * \param pArg source argument |
||
| 2017 | * ------------------------------------------------------------------------ */ |
||
| 2018 | |||
| 2019 | static void DecodeBranch(Word Code, Word MaxDist, Boolean Inverse, const tStrComp *pArg) |
||
| 2020 | { |
||
| 2021 | tEvalResult EvalResult; |
||
| 2022 | LongWord Addr = EvalStrIntExpressionWithResult(pArg, MemIntType, &EvalResult); |
||
| 2023 | |||
| 2024 | if (EvalResult.OK) |
||
| 2025 | { |
||
| 2026 | Word Delta; |
||
| 2027 | |||
| 2028 | /* considering wraparound in segment makes things a bit more complicated: */ |
||
| 2029 | |||
| 2030 | if (!mFirstPassUnknownOrQuestionable(EvalResult.Flags) && (GetSegment(Addr) != GetSegment(EProgCounter()))) |
||
| 2031 | WrStrErrorPos(ErrNum_InAccSegment, pArg); |
||
| 2032 | |||
| 2033 | Delta = (Addr & 0xffff) - ((EProgCounter() + 2) & 0xffff); |
||
| 2034 | if (Inverse) |
||
| 2035 | Delta = (~Delta) + 1; |
||
| 2036 | if ((Delta & 1) && !mFirstPassUnknownOrQuestionable(EvalResult.Flags)) WrStrErrorPos(ErrNum_AddrMustBeEven, pArg); |
||
| 2037 | else if ((Delta > MaxDist) && (Delta < (0xfffe - MaxDist)) && !mFirstPassUnknownOrQuestionable(EvalResult.Flags)) WrStrErrorPos(ErrNum_JmpDistTooBig, pArg); |
||
| 2038 | else |
||
| 2039 | AppendCode(Code | ((Delta >> 1) & (MaxDist + 1))); |
||
| 2040 | } |
||
| 2041 | } |
||
| 2042 | |||
| 2043 | /*!------------------------------------------------------------------------ |
||
| 2044 | * \fn DecodeCALR(Word Code) |
||
| 2045 | * \brief decode CALR instruction |
||
| 2046 | * \param Code instruction code (upper bits) |
||
| 2047 | * ------------------------------------------------------------------------ */ |
||
| 2048 | |||
| 2049 | static void DecodeCALR(Word Code) |
||
| 2050 | { |
||
| 2051 | if (ChkArgCnt(1, 1)) |
||
| 2052 | DecodeBranch(Code, 4094, True, &ArgStr[1]); |
||
| 2053 | } |
||
| 2054 | |||
| 2055 | /*!------------------------------------------------------------------------ |
||
| 2056 | * \fn DecodeJR(Word Code) |
||
| 2057 | * \brief decode JR instruction |
||
| 2058 | * \param Code instruction code (upper bits) |
||
| 2059 | * ------------------------------------------------------------------------ */ |
||
| 2060 | |||
| 2061 | static void DecodeJR(Word Code) |
||
| 2062 | { |
||
| 2063 | Word Condition; |
||
| 2064 | |||
| 2065 | if (ChkArgCnt(1, 2) |
||
| 2066 | && DecodeCondition(ArgCnt == 2 ? &ArgStr[1] : NULL, &Condition)) |
||
| 2067 | DecodeBranch(Code | (Condition << 8), 254, False, &ArgStr[ArgCnt]); |
||
| 2068 | } |
||
| 2069 | |||
| 2070 | /*!------------------------------------------------------------------------ |
||
| 2071 | * \fn DecodeDJNZ(Word Code) |
||
| 2072 | * \brief decode DJNZ instructions |
||
| 2073 | * \param size spec |
||
| 2074 | * ------------------------------------------------------------------------ */ |
||
| 2075 | |||
| 2076 | static void DecodeDJNZ(Word Code) |
||
| 2077 | { |
||
| 2078 | tAdrVals AdrVals; |
||
| 2079 | |||
| 2080 | if (SetOpSizeFromCode(Code) |
||
| 2081 | && ChkArgCnt(2, 2) |
||
| 2082 | && DecodeAdr(&ArgStr[1], MModReg, &AdrVals)) |
||
| 2083 | { |
||
| 2084 | if (OpSize > eSymbolSize16Bit) WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2085 | else |
||
| 2086 | { |
||
| 2087 | tEvalResult EvalResult; |
||
| 2088 | LongWord Addr = EvalStrIntExpressionWithResult(&ArgStr[2], MemIntType, &EvalResult); |
||
| 2089 | |||
| 2090 | if (EvalResult.OK) |
||
| 2091 | { |
||
| 2092 | Word Delta; |
||
| 2093 | |||
| 2094 | /* considering wraparound in segment makes things a bit more complicated: */ |
||
| 2095 | |||
| 2096 | if (!mFirstPassUnknownOrQuestionable(EvalResult.Flags) && (GetSegment(Addr) != GetSegment(EProgCounter()))) |
||
| 2097 | WrStrErrorPos(ErrNum_InAccSegment, &ArgStr[2]); |
||
| 2098 | |||
| 2099 | Delta = (Addr & 0xffff) - ((EProgCounter() + 2) & 0xffff); |
||
| 2100 | if ((Delta & 1) && !mFirstPassUnknownOrQuestionable(EvalResult.Flags)) WrStrErrorPos(ErrNum_AddrMustBeEven, &ArgStr[2]); |
||
| 2101 | else if ((Delta > 0) && (Delta < 0xff02) && !mFirstPassUnknownOrQuestionable(EvalResult.Flags)) WrStrErrorPos(ErrNum_JmpDistTooBig, &ArgStr[2]); |
||
| 2102 | else |
||
| 2103 | { |
||
| 2104 | Delta = (0x10000lu - Delta) >> 1; |
||
| 2105 | AppendCode(0xf000 | (AdrVals.Val << 8) | (OpSize << 7) | (Delta & 0x7f)); |
||
| 2106 | } |
||
| 2107 | } |
||
| 2108 | } |
||
| 2109 | } |
||
| 2110 | } |
||
| 2111 | |||
| 2112 | /*!------------------------------------------------------------------------ |
||
| 2113 | * \fn DecodeCLR_COM_NEG_TSET(Word Code) |
||
| 2114 | * \brief decode CLR/COM/NEG/TSET instructions |
||
| 2115 | * \param Code machine code + size spec |
||
| 2116 | * ------------------------------------------------------------------------ */ |
||
| 2117 | |||
| 2118 | static void DecodeCLR_COM_NEG_TSET(Word Code) |
||
| 2119 | { |
||
| 2120 | tAdrVals AdrVals; |
||
| 2121 | |||
| 2122 | if (SetOpSizeFromCode(Code) |
||
| 2123 | && ChkArgCnt(1,1) |
||
| 2124 | && DecodeAdr(&ArgStr[1], MModReg | MModIReg | MModDirect | MModIndexed, &AdrVals)) |
||
| 2125 | { |
||
| 2126 | if (OpSize == eSymbolSizeUnknown) |
||
| 2127 | OpSize = eSymbolSize16Bit; |
||
| 2128 | if (OpSize > eSymbolSize16Bit) WrError(ErrNum_InvOpSize); |
||
| 2129 | else |
||
| 2130 | { |
||
| 2131 | Code = ((Code >> 4) & 0x0f) | (((Code & 0x0e) | OpSize) << 8); |
||
| 2132 | switch (AdrVals.Mode) |
||
| 2133 | { |
||
| 2134 | case eModReg: |
||
| 2135 | AppendCode(0x8000 | Code | (AdrVals.Val << 4)); |
||
| 2136 | break; |
||
| 2137 | case eModIReg: |
||
| 2138 | AppendCode(0x0000 | Code | (AdrVals.Val << 4)); |
||
| 2139 | break; |
||
| 2140 | case eModDirect: |
||
| 2141 | case eModIndexed: |
||
| 2142 | AppendCode(0x4000 | Code | (AdrVals.Val << 4)); |
||
| 2143 | AppendAdrVals(&AdrVals); |
||
| 2144 | break; |
||
| 2145 | default: |
||
| 2146 | break; |
||
| 2147 | } |
||
| 2148 | } |
||
| 2149 | } |
||
| 2150 | } |
||
| 2151 | |||
| 2152 | /*!------------------------------------------------------------------------ |
||
| 2153 | * \fn DecodeTEST(Word Code) |
||
| 2154 | * \brief decode TEST instruction |
||
| 2155 | * \param Code machine code + size spec |
||
| 2156 | * ------------------------------------------------------------------------ */ |
||
| 2157 | |||
| 2158 | static void DecodeTEST(Word Code) |
||
| 2159 | { |
||
| 2160 | tAdrVals AdrVals; |
||
| 2161 | |||
| 2162 | if (SetOpSizeFromCode(Code) |
||
| 2163 | && ChkArgCnt(1, 1) |
||
| 2164 | && DecodeAdr(&ArgStr[1], MModReg | MModIReg | MModDirect | MModIndexed, &AdrVals)) |
||
| 2165 | { |
||
| 2166 | if (OpSize == eSymbolSizeUnknown) |
||
| 2167 | OpSize = eSymbolSize16Bit; |
||
| 2168 | if (OpSize > eSymbolSize32Bit) WrError(ErrNum_InvOpSize); |
||
| 2169 | else |
||
| 2170 | { |
||
| 2171 | Code = (Lo(Code) | ((OpSize == eSymbolSize32Bit) ? 0x10 : OpSize)) << 8 | ((OpSize == eSymbolSize32Bit) ? 8 : 4); |
||
| 2172 | switch (AdrVals.Mode) |
||
| 2173 | { |
||
| 2174 | case eModReg: |
||
| 2175 | AppendCode(0x8000 | Code | (AdrVals.Val << 4)); |
||
| 2176 | break; |
||
| 2177 | case eModIReg: |
||
| 2178 | AppendCode(0x0000 | Code | (AdrVals.Val << 4)); |
||
| 2179 | break; |
||
| 2180 | case eModDirect: |
||
| 2181 | case eModIndexed: |
||
| 2182 | AppendCode(0x4000 | Code | (AdrVals.Val << 4)); |
||
| 2183 | AppendAdrVals(&AdrVals); |
||
| 2184 | break; |
||
| 2185 | default: |
||
| 2186 | break; |
||
| 2187 | } |
||
| 2188 | } |
||
| 2189 | } |
||
| 2190 | } |
||
| 2191 | |||
| 2192 | /*!------------------------------------------------------------------------ |
||
| 2193 | * \fn DecodeEX(Word Code) |
||
| 2194 | * \brief decode EX instruction |
||
| 2195 | * \param Code machine code + size spec |
||
| 2196 | * ------------------------------------------------------------------------ */ |
||
| 2197 | |||
| 2198 | static void DecodeEX(Word Code) |
||
| 2199 | { |
||
| 2200 | tAdrVals SrcAdrVals, DestAdrVals; |
||
| 2201 | |||
| 2202 | if (SetOpSizeFromCode(Code) |
||
| 2203 | && ChkArgCnt(2, 2) |
||
| 2204 | && DecodeAdr(&ArgStr[1], MModReg | MModIReg | MModDirect | MModIndexed, &DestAdrVals) |
||
| 2205 | && DecodeAdr(&ArgStr[2], MModReg | ((DestAdrVals.Mode == eModReg) ? (MModIReg | MModDirect | MModIndexed) : 0), &SrcAdrVals)) |
||
| 2206 | { |
||
| 2207 | if (OpSize == eSymbolSizeUnknown) |
||
| 2208 | OpSize = eSymbolSize16Bit; |
||
| 2209 | if (OpSize > eSymbolSize16Bit) WrError(ErrNum_InvOpSize); |
||
| 2210 | else |
||
| 2211 | { |
||
| 2212 | if (DestAdrVals.Mode != eModReg) |
||
| 2213 | { |
||
| 2214 | tAdrVals Swap; |
||
| 2215 | Swap = SrcAdrVals; |
||
| 2216 | SrcAdrVals = DestAdrVals; |
||
| 2217 | DestAdrVals = Swap; |
||
| 2218 | } |
||
| 2219 | Code = (Lo(Code) | OpSize) << 8; |
||
| 2220 | switch (SrcAdrVals.Mode) |
||
| 2221 | { |
||
| 2222 | case eModReg: |
||
| 2223 | AppendCode(0x8000 | Code | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 2224 | break; |
||
| 2225 | case eModIReg: |
||
| 2226 | AppendCode(0x0000 | Code | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 2227 | break; |
||
| 2228 | case eModDirect: |
||
| 2229 | case eModIndexed: |
||
| 2230 | AppendCode(0x4000 | Code | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 2231 | AppendAdrVals(&SrcAdrVals); |
||
| 2232 | break; |
||
| 2233 | default: |
||
| 2234 | break; |
||
| 2235 | } |
||
| 2236 | } |
||
| 2237 | } |
||
| 2238 | } |
||
| 2239 | |||
| 2240 | /*!------------------------------------------------------------------------ |
||
| 2241 | * \fn DecodeEXTS(Word Code) |
||
| 2242 | * \brief decode EXTS instruction |
||
| 2243 | * \param Code machine code + size spec |
||
| 2244 | * ------------------------------------------------------------------------ */ |
||
| 2245 | |||
| 2246 | static void DecodeEXTS(Word Code) |
||
| 2247 | { |
||
| 2248 | if (SetOpSizeFromCode(Code) |
||
| 2249 | && ChkArgCnt(1, 1)) |
||
| 2250 | { |
||
| 2251 | tAdrVals AdrVals; |
||
| 2252 | |||
| 2253 | if (OpSize != eSymbolSizeUnknown) |
||
| 2254 | OpSize++; |
||
| 2255 | if (DecodeAdr(&ArgStr[1], MModReg, &AdrVals)) |
||
| 2256 | { |
||
| 2257 | Code = (Lo(Code) << 8) | 0x8000 | (AdrVals.Val << 4); |
||
| 2258 | switch (OpSize) |
||
| 2259 | { |
||
| 2260 | case eSymbolSize16Bit: |
||
| 2261 | AppendCode(Code | 0x0000); |
||
| 2262 | break; |
||
| 2263 | case eSymbolSize32Bit: |
||
| 2264 | AppendCode(Code | 0x000a); |
||
| 2265 | break; |
||
| 2266 | case eSymbolSize64Bit: |
||
| 2267 | AppendCode(Code | 0x0007); |
||
| 2268 | break; |
||
| 2269 | default: |
||
| 2270 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2271 | } |
||
| 2272 | } |
||
| 2273 | } |
||
| 2274 | } |
||
| 2275 | |||
| 2276 | /*!------------------------------------------------------------------------ |
||
| 2277 | * \fn DecodeMULT_DIV(Word Code) |
||
| 2278 | * \brief decode multiply/divide instructions |
||
| 2279 | * \param Code instruction code |
||
| 2280 | * ------------------------------------------------------------------------ */ |
||
| 2281 | |||
| 2282 | static void DecodeMULT_DIV(Word Code) |
||
| 2283 | { |
||
| 2284 | if (SetOpSizeFromCode(Code) |
||
| 2285 | && ChkArgCnt(2, 2)) |
||
| 2286 | { |
||
| 2287 | tAdrVals DestAdrVals; |
||
| 2288 | |||
| 2289 | if (OpSize != eSymbolSizeUnknown) |
||
| 2290 | OpSize++; |
||
| 2291 | if (DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals) == eModReg) |
||
| 2292 | { |
||
| 2293 | tAdrVals SrcAdrVals; |
||
| 2294 | |||
| 2295 | if ((OpSize < eSymbolSize32Bit) || (OpSize > eSymbolSize64Bit)) |
||
| 2296 | { |
||
| 2297 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2298 | return; |
||
| 2299 | } |
||
| 2300 | |||
| 2301 | OpSize--; |
||
| 2302 | switch (DecodeAdr(&ArgStr[2], MModReg | MModImm | MModIReg | MModDirect | MModIndexed, &SrcAdrVals)) |
||
| 2303 | { |
||
| 2304 | case eModReg: |
||
| 2305 | AppendCode(0x8000 | ((Code | (OpSize & 1)) << 8) | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 2306 | break; |
||
| 2307 | case eModImm: |
||
| 2308 | case eModIReg: |
||
| 2309 | AppendCode(0x0000 | ((Code | (OpSize & 1)) << 8) | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 2310 | AppendAdrVals(&SrcAdrVals); |
||
| 2311 | break; |
||
| 2312 | case eModDirect: |
||
| 2313 | case eModIndexed: |
||
| 2314 | AppendCode(0x4000 | ((Code | (OpSize & 1)) << 8) | (SrcAdrVals.Val << 4) | DestAdrVals.Val); |
||
| 2315 | AppendAdrVals(&SrcAdrVals); |
||
| 2316 | break; |
||
| 2317 | default: |
||
| 2318 | break; |
||
| 2319 | } |
||
| 2320 | } |
||
| 2321 | } |
||
| 2322 | } |
||
| 2323 | |||
| 2324 | /*!------------------------------------------------------------------------ |
||
| 2325 | * \fn DecodeDAB(Word Code) |
||
| 2326 | * \brief decode DAB instruction |
||
| 2327 | * \param Code instruction code |
||
| 2328 | * ------------------------------------------------------------------------ */ |
||
| 2329 | |||
| 2330 | static void DecodeDAB(Word Code) |
||
| 2331 | { |
||
| 2332 | tAdrVals AdrVals; |
||
| 2333 | |||
| 2334 | SetOpSize(eSymbolSize8Bit, &OpPart); |
||
| 2335 | if (ChkArgCnt(1,1) && DecodeAdr(&ArgStr[1], MModReg, &AdrVals)) |
||
| 2336 | AppendCode(Code | (AdrVals.Val << 4)); |
||
| 2337 | } |
||
| 2338 | |||
| 2339 | /*!------------------------------------------------------------------------ |
||
| 2340 | * \fn DecodeFLG(Word Code) |
||
| 2341 | * \brief decode flag set/reset/complement instructions |
||
| 2342 | * \param machine code |
||
| 2343 | * ------------------------------------------------------------------------ */ |
||
| 2344 | |||
| 2345 | static void DecodeFLG(Word Code) |
||
| 2346 | { |
||
| 2347 | if (ChkArgCnt(1, ArgCntMax)) |
||
| 2348 | { |
||
| 2349 | int z; |
||
| 2350 | Word Num; |
||
| 2351 | static const char FlagNames[] = "PSZCV"; |
||
| 2352 | |||
| 2353 | for (z = 1; z <= ArgCnt; z++) |
||
| 2354 | { |
||
| 2355 | if (!as_strcasecmp(ArgStr[z].str.p_str, "P/V")) |
||
| 2356 | Num = 1 << 0; |
||
| 2357 | else if (!as_strcasecmp(ArgStr[z].str.p_str, "ZR")) |
||
| 2358 | Num = 1 << 2; |
||
| 2359 | else if (!as_strcasecmp(ArgStr[z].str.p_str, "CY")) |
||
| 2360 | Num = 1 << 3; |
||
| 2361 | else if (1 == strlen(ArgStr[z].str.p_str)) |
||
| 2362 | { |
||
| 2363 | const char *pPos = strchr(FlagNames, as_toupper(*ArgStr[z].str.p_str)); |
||
| 2364 | Num = pPos ? (1 << ((pPos - FlagNames) % 4)) : 0; |
||
| 2365 | } |
||
| 2366 | else |
||
| 2367 | Num = 0; |
||
| 2368 | |||
| 2369 | if (!Num) |
||
| 2370 | { |
||
| 2371 | WrStrErrorPos(ErrNum_UnknownFlag, &ArgStr[z]); |
||
| 2372 | return; |
||
| 2373 | } |
||
| 2374 | else if (Code & (Num << 4)) |
||
| 2375 | { |
||
| 2376 | WrStrErrorPos(ErrNum_DuplicateFlag, &ArgStr[z]); |
||
| 2377 | return; |
||
| 2378 | } |
||
| 2379 | else |
||
| 2380 | Code |= Num << 4; |
||
| 2381 | } |
||
| 2382 | AppendCode(Code); |
||
| 2383 | } |
||
| 2384 | } |
||
| 2385 | |||
| 2386 | /*!------------------------------------------------------------------------ |
||
| 2387 | * \fn DecodeDI_EI(Word Code) |
||
| 2388 | * \brief decode interrupt enable/disable instructions |
||
| 2389 | * \param Code machine code |
||
| 2390 | * ------------------------------------------------------------------------ */ |
||
| 2391 | |||
| 2392 | static void DecodeDI_EI(Word Code) |
||
| 2393 | { |
||
| 2394 | if (ChkArgCnt(1, ArgCntMax) |
||
| 2395 | && CheckSup(True)) |
||
| 2396 | { |
||
| 2397 | int z; |
||
| 2398 | Word Num; |
||
| 2399 | |||
| 2400 | Code |= 3; |
||
| 2401 | for (z = 1; z <= ArgCnt; z++) |
||
| 2402 | { |
||
| 2403 | if (!as_strcasecmp(ArgStr[z].str.p_str, "VI")) |
||
| 2404 | Num = 1 << 1; |
||
| 2405 | else if (!as_strcasecmp(ArgStr[z].str.p_str, "NVI")) |
||
| 2406 | Num = 1 << 0; |
||
| 2407 | else |
||
| 2408 | Num = 0; |
||
| 2409 | |||
| 2410 | if (!Num) |
||
| 2411 | { |
||
| 2412 | WrStrErrorPos(ErrNum_UnknownInt, &ArgStr[z]); |
||
| 2413 | return; |
||
| 2414 | } |
||
| 2415 | else if (!(Code & Num)) |
||
| 2416 | { |
||
| 2417 | WrStrErrorPos(ErrNum_DuplicateInt, &ArgStr[z]); |
||
| 2418 | return; |
||
| 2419 | } |
||
| 2420 | else |
||
| 2421 | Code &= ~Num; |
||
| 2422 | } |
||
| 2423 | AppendCode(Code); |
||
| 2424 | } |
||
| 2425 | } |
||
| 2426 | |||
| 2427 | /*!------------------------------------------------------------------------ |
||
| 2428 | * \fn DecodeIN_SIN_OUT_SOUT(Word Code) |
||
| 2429 | * \brief decode IN/SIN/OUT/SOUT |
||
| 2430 | * \param Code machine code |
||
| 2431 | * ------------------------------------------------------------------------ */ |
||
| 2432 | |||
| 2433 | static void DecodeIN_SIN_OUT_SOUT(Word Code) |
||
| 2434 | { |
||
| 2435 | tAdrVals RegAdrVals; |
||
| 2436 | Word IsOUT = Code & 2, |
||
| 2437 | IsSpecial = Code & 1; |
||
| 2438 | const tStrComp *pRegArg = IsOUT ? &ArgStr[2] : &ArgStr[1], |
||
| 2439 | *pIOArg = IsOUT ? &ArgStr[1] : &ArgStr[2]; |
||
| 2440 | |||
| 2441 | if (SetOpSizeFromCode(Code) |
||
| 2442 | && ChkArgCnt(2, 2) |
||
| 2443 | && CheckSup(True) |
||
| 2444 | && DecodeAdr(pRegArg, MModReg, &RegAdrVals)) |
||
| 2445 | { |
||
| 2446 | tAdrVals IOAdrVals; |
||
| 2447 | |||
| 2448 | if (OpSize > eSymbolSize16Bit) |
||
| 2449 | { |
||
| 2450 | WrStrErrorPos(ErrNum_InvOpSize, pRegArg); |
||
| 2451 | return; |
||
| 2452 | } |
||
| 2453 | switch (DecodeAdr(pIOArg, MModIO | MModDirect | (IsSpecial ? 0 : MModIReg), &IOAdrVals)) |
||
| 2454 | { |
||
| 2455 | case eModIReg: |
||
| 2456 | AppendCode(0x3c00 | (IsOUT << 8) | (OpSize << 8) | (IOAdrVals.Val << 4) | RegAdrVals.Val); |
||
| 2457 | break; |
||
| 2458 | case eModDirect: |
||
| 2459 | AppendCode(0x3a04 | (OpSize << 8) | (RegAdrVals.Val << 4) | Lo(Code)); |
||
| 2460 | AppendAdrVals(&IOAdrVals); |
||
| 2461 | break; |
||
| 2462 | default: |
||
| 2463 | break; |
||
| 2464 | } |
||
| 2465 | } |
||
| 2466 | } |
||
| 2467 | |||
| 2468 | /*!------------------------------------------------------------------------ |
||
| 2469 | * \fn DecodeCPRep(Word Code) |
||
| 2470 | * \brief decode CP[S](I/D)[R][D] instructions |
||
| 2471 | * \param Code instruction code |
||
| 2472 | * ------------------------------------------------------------------------ */ |
||
| 2473 | |||
| 2474 | static void DecodeCPRep(Word Code) |
||
| 2475 | { |
||
| 2476 | tAdrVals DestAdrVals, SrcAdrVals, CntAdrVals; |
||
| 2477 | Word Condition; |
||
| 2478 | tAdrMode DestMode = (Code & 0x02) ? eModIReg : eModReg; |
||
| 2479 | |||
| 2480 | if (!SetOpSizeFromCode(Code) |
||
| 2481 | || !ChkArgCnt(3, 4) |
||
| 2482 | || !DecodeCondition((ArgCnt == 4) ? &ArgStr[4] : NULL, &Condition)) |
||
| 2483 | return; |
||
| 2484 | |||
| 2485 | if ((DecodeAdr(&ArgStr[1], 1 << DestMode, &DestAdrVals) == DestMode) |
||
| 2486 | && (DecodeAdr(&ArgStr[2], MModIReg, &SrcAdrVals) == eModIReg)) |
||
| 2487 | { |
||
| 2488 | tSymbolSize SaveOpSize; |
||
| 2489 | |||
| 2490 | if (OpSize == eSymbolSizeUnknown) |
||
| 2491 | OpSize = eSymbolSize16Bit; |
||
| 2492 | SaveOpSize = OpSize; |
||
| 2493 | OpSize = eSymbolSize16Bit; |
||
| 2494 | if (DecodeAdr(&ArgStr[3], MModReg, &CntAdrVals) == eModReg) |
||
| 2495 | { |
||
| 2496 | if (SaveOpSize == eSymbolSize32Bit) WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2497 | else |
||
| 2498 | { |
||
| 2499 | int Index = |
||
| 2500 | ChkRegOverlap((unsigned)DestAdrVals.Val, ((DestMode == eModIReg) ? AddrRegSize() : SaveOpSize), |
||
| 2501 | (unsigned)SrcAdrVals.Val, (int)AddrRegSize(), |
||
| 2502 | (unsigned)CntAdrVals.Val, (int)eSymbolSize16Bit, |
||
| 2503 | 0, eSymbolSizeUnknown); |
||
| 2504 | |||
| 2505 | if (Index >= 0) |
||
| 2506 | WrStrErrorPos(ErrNum_OverlapReg, &ArgStr[Index + 1]); |
||
| 2507 | AppendCode(0xba00 | (SaveOpSize << 8) | (SrcAdrVals.Val << 4) | Lo(Code)); |
||
| 2508 | AppendCode((CntAdrVals.Val << 8) | (DestAdrVals.Val << 4) | Condition); |
||
| 2509 | } |
||
| 2510 | } |
||
| 2511 | } |
||
| 2512 | } |
||
| 2513 | |||
| 2514 | /*!------------------------------------------------------------------------ |
||
| 2515 | * \fn DecodeINOUTRep(Word Code) |
||
| 2516 | * \brief decode string I/O instructions |
||
| 2517 | * \param Code instruction machine code |
||
| 2518 | * ------------------------------------------------------------------------ */ |
||
| 2519 | |||
| 2520 | static void DecodeINOUTRep(Word Code) |
||
| 2521 | { |
||
| 2522 | tAdrVals DestAdrVals, SrcAdrVals; |
||
| 2523 | Word IsOUT = Code & 0x20; |
||
| 2524 | |||
| 2525 | if (!SetOpSizeFromCode(Code) |
||
| 2526 | || !CheckSup(True) |
||
| 2527 | || !ChkArgCnt(3, 3)) |
||
| 2528 | return; |
||
| 2529 | |||
| 2530 | if (DecodeAdr(&ArgStr[1], MModIReg | (IsOUT ? MModIO : 0), &DestAdrVals) |
||
| 2531 | && DecodeAdr(&ArgStr[2], MModIReg | (IsOUT ? 0 : MModIO), &SrcAdrVals)) |
||
| 2532 | { |
||
| 2533 | tAdrVals CntAdrVals; |
||
| 2534 | tSymbolSize SaveOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 2535 | |||
| 2536 | OpSize = eSymbolSize16Bit; |
||
| 2537 | if (DecodeAdr(&ArgStr[3], MModReg, &CntAdrVals)) |
||
| 2538 | { |
||
| 2539 | AppendCode(0x3a00 | (SaveOpSize << 8) | (SrcAdrVals.Val << 4) | ((Code >> 4) & 15)); |
||
| 2540 | AppendCode((CntAdrVals.Val << 8) | (DestAdrVals.Val << 4) | (Code & 15)); |
||
| 2541 | } |
||
| 2542 | } |
||
| 2543 | } |
||
| 2544 | |||
| 2545 | /*!------------------------------------------------------------------------ |
||
| 2546 | * \fn DecodeLDRep(Word Code) |
||
| 2547 | * \brief decode string copy instructions |
||
| 2548 | * \param Code instruction machine code |
||
| 2549 | * ------------------------------------------------------------------------ */ |
||
| 2550 | |||
| 2551 | static void DecodeLDRep(Word Code) |
||
| 2552 | { |
||
| 2553 | tAdrVals DestAdrVals, SrcAdrVals; |
||
| 2554 | |||
| 2555 | if (!SetOpSizeFromCode(Code) |
||
| 2556 | || !ChkArgCnt(3, 3)) |
||
| 2557 | return; |
||
| 2558 | |||
| 2559 | if (DecodeAdr(&ArgStr[1], MModIReg, &DestAdrVals) |
||
| 2560 | && DecodeAdr(&ArgStr[2], MModIReg, &SrcAdrVals)) |
||
| 2561 | { |
||
| 2562 | tAdrVals CntAdrVals; |
||
| 2563 | tSymbolSize SaveOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 2564 | |||
| 2565 | OpSize = eSymbolSize16Bit; |
||
| 2566 | if (DecodeAdr(&ArgStr[3], MModReg, &CntAdrVals)) |
||
| 2567 | { |
||
| 2568 | AppendCode(0xba00 | (SaveOpSize << 8) | (SrcAdrVals.Val << 4) | ((Code >> 4) & 15)); |
||
| 2569 | AppendCode((CntAdrVals.Val << 8) | (DestAdrVals.Val << 4) | (Code & 15)); |
||
| 2570 | } |
||
| 2571 | } |
||
| 2572 | } |
||
| 2573 | |||
| 2574 | /*!------------------------------------------------------------------------ |
||
| 2575 | * \fn DecodeTRRep(Word Code) |
||
| 2576 | * \brief decode string translate instructions |
||
| 2577 | * \param Code instruction machine code |
||
| 2578 | * ------------------------------------------------------------------------ */ |
||
| 2579 | |||
| 2580 | static void DecodeTRRep(Word Code) |
||
| 2581 | { |
||
| 2582 | tAdrVals DestAdrVals, SrcAdrVals, CntAdrVals; |
||
| 2583 | |||
| 2584 | /* op size only applies to counter reg */ |
||
| 2585 | |||
| 2586 | OpSize = eSymbolSize16Bit; |
||
| 2587 | if (ChkArgCnt(3, 3) |
||
| 2588 | && DecodeAdr(&ArgStr[1], MModIReg, &DestAdrVals) |
||
| 2589 | && DecodeAdr(&ArgStr[2], MModIReg, &SrcAdrVals) |
||
| 2590 | && DecodeAdr(&ArgStr[3], MModReg, &CntAdrVals)) |
||
| 2591 | { |
||
| 2592 | Boolean OK = True; |
||
| 2593 | int Index; |
||
| 2594 | |||
| 2595 | /* R0/R1 in non-seg mode or RR0 in seg mode must not be used as src/dest. |
||
| 2596 | R1 should not be used as counter. |
||
| 2597 | This is only spelled out for TRDB, but due to the implicit usage of RH1 |
||
| 2598 | in all translate instructions, this restriction effectively applies to |
||
| 2599 | them all. |
||
| 2600 | Since (R)R0 is anyway not allowed for indirect addressing, this reduces |
||
| 2601 | to check fo R1: */ |
||
| 2602 | |||
| 2603 | if (!Segmented() && (DestAdrVals.Val == 1)) |
||
| 2604 | { |
||
| 2605 | WrStrErrorPos(ErrNum_InvReg, &ArgStr[1]); |
||
| 2606 | OK = False; |
||
| 2607 | } |
||
| 2608 | if (!Segmented() && (SrcAdrVals.Val == 1)) |
||
| 2609 | { |
||
| 2610 | WrStrErrorPos(ErrNum_InvReg, &ArgStr[2]); |
||
| 2611 | OK = False; |
||
| 2612 | } |
||
| 2613 | if (CntAdrVals.Val == 1) |
||
| 2614 | { |
||
| 2615 | WrStrErrorPos(ErrNum_InvReg, &ArgStr[3]); |
||
| 2616 | OK = False; |
||
| 2617 | } |
||
| 2618 | |||
| 2619 | Index = ChkRegOverlap((unsigned)DestAdrVals.Val, AddrRegSize(), |
||
| 2620 | (unsigned)SrcAdrVals.Val, (int)AddrRegSize(), |
||
| 2621 | (unsigned)CntAdrVals.Val, (int)eSymbolSize16Bit, |
||
| 2622 | 0, eSymbolSizeUnknown); |
||
| 2623 | if (Index >= 0) |
||
| 2624 | WrStrErrorPos(ErrNum_OverlapReg, &ArgStr[Index + 1]); |
||
| 2625 | |||
| 2626 | if (OK) |
||
| 2627 | { |
||
| 2628 | AppendCode(0xb800 | (DestAdrVals.Val << 4) | ((Code >> 4) & 15)); |
||
| 2629 | AppendCode((CntAdrVals.Val << 8) | (SrcAdrVals.Val << 4) | (Code & 15)); |
||
| 2630 | } |
||
| 2631 | } |
||
| 2632 | } |
||
| 2633 | |||
| 2634 | /*!------------------------------------------------------------------------ |
||
| 2635 | * \fn DecodeLDK(Word Code) |
||
| 2636 | * \brief decode LDK instruction |
||
| 2637 | * \param Code machine code |
||
| 2638 | * ------------------------------------------------------------------------ */ |
||
| 2639 | |||
| 2640 | static void DecodeLDK(Word Code) |
||
| 2641 | { |
||
| 2642 | tAdrVals DestAdrVals; |
||
| 2643 | |||
| 2644 | if (ChkArgCnt(2, 2) |
||
| 2645 | && DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals)) |
||
| 2646 | { |
||
| 2647 | Word Value; |
||
| 2648 | Boolean OK; |
||
| 2649 | |||
| 2650 | if (OpSize != eSymbolSize16Bit) |
||
| 2651 | { |
||
| 2652 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2653 | return; |
||
| 2654 | } |
||
| 2655 | Value = EvalStrIntExpressionOffs(&ArgStr[2], !!(*ArgStr[2].str.p_str == '#'), UInt4, &OK); |
||
| 2656 | if (OK) |
||
| 2657 | AppendCode(Code | (DestAdrVals.Val << 4) | Value); |
||
| 2658 | } |
||
| 2659 | } |
||
| 2660 | |||
| 2661 | /*!------------------------------------------------------------------------ |
||
| 2662 | * \fn DecodeLDM(Word Code) |
||
| 2663 | * \brief decode LDM instruction |
||
| 2664 | * \param Code machine code |
||
| 2665 | * ------------------------------------------------------------------------ */ |
||
| 2666 | |||
| 2667 | static void DecodeLDM(Word Code) |
||
| 2668 | { |
||
| 2669 | Word Count; |
||
| 2670 | tEvalResult EvalResult; |
||
| 2671 | tAdrVals RegAdrVals, MemAdrVals; |
||
| 2672 | int RegArgIndex; |
||
| 2673 | |||
| 2674 | if (!ChkArgCnt(3, 3)) |
||
| 2675 | return; |
||
| 2676 | |||
| 2677 | Count = DecodeImm1_16(&ArgStr[3], &EvalResult); |
||
| 2678 | if (!EvalResult.OK) |
||
| 2679 | return; |
||
| 2680 | |||
| 2681 | switch (DecodeAdr(&ArgStr[1], MModReg | MModIReg | MModDirect | MModIndexed, &RegAdrVals)) |
||
| 2682 | { |
||
| 2683 | case eModReg: |
||
| 2684 | RegArgIndex = 1; |
||
| 2685 | if (!DecodeAdr(&ArgStr[2], MModIReg | MModDirect | MModIndexed, &MemAdrVals)) |
||
| 2686 | return; |
||
| 2687 | goto common; |
||
| 2688 | case eModIReg: |
||
| 2689 | case eModDirect: |
||
| 2690 | case eModIndexed: |
||
| 2691 | MemAdrVals = RegAdrVals; |
||
| 2692 | Code |= 0x0008; |
||
| 2693 | if (!DecodeAdr(&ArgStr[2], MModReg, &RegAdrVals)) |
||
| 2694 | return; |
||
| 2695 | RegArgIndex = 2; |
||
| 2696 | /* fall-thru */ |
||
| 2697 | common: |
||
| 2698 | if (OpSize != eSymbolSize16Bit) WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[RegArgIndex]); |
||
| 2699 | else |
||
| 2700 | { |
||
| 2701 | if (RegAdrVals.Val + Count >= 16) WrStrErrorPos(ErrNum_RegNumWraparound, &ArgStr[3]); |
||
| 2702 | switch (MemAdrVals.Mode) |
||
| 2703 | { |
||
| 2704 | case eModIReg: |
||
| 2705 | AppendCode(Code | (MemAdrVals.Val << 4)); |
||
| 2706 | AppendCode((RegAdrVals.Val << 8) | Count); |
||
| 2707 | break; |
||
| 2708 | case eModDirect: |
||
| 2709 | case eModIndexed: |
||
| 2710 | AppendCode(Code | 0x4000 | (MemAdrVals.Val << 4)); |
||
| 2711 | AppendCode((RegAdrVals.Val << 8) | Count); |
||
| 2712 | AppendAdrVals(&MemAdrVals); |
||
| 2713 | break; |
||
| 2714 | default: |
||
| 2715 | break; |
||
| 2716 | } |
||
| 2717 | } |
||
| 2718 | break; |
||
| 2719 | default: |
||
| 2720 | break; |
||
| 2721 | } |
||
| 2722 | } |
||
| 2723 | |||
| 2724 | /*!------------------------------------------------------------------------ |
||
| 2725 | * \fn DecodeLDPS(Word Code) |
||
| 2726 | * \brief decode LDPS instruction |
||
| 2727 | * \param Code machine code |
||
| 2728 | * ------------------------------------------------------------------------ */ |
||
| 2729 | |||
| 2730 | static void DecodeLDPS(Word Code) |
||
| 2731 | { |
||
| 2732 | tAdrVals AdrVals; |
||
| 2733 | |||
| 2734 | if (ChkArgCnt(1, 1) |
||
| 2735 | && CheckSup(True)) |
||
| 2736 | switch (DecodeAdr(&ArgStr[1], MModIReg | MModDirect | MModIndexed, &AdrVals)) |
||
| 2737 | { |
||
| 2738 | case eModIReg: |
||
| 2739 | AppendCode(Code | 0x0000 | (AdrVals.Val << 4)); |
||
| 2740 | break; |
||
| 2741 | case eModDirect: |
||
| 2742 | case eModIndexed: |
||
| 2743 | AppendCode(Code | 0x4000 | (AdrVals.Val << 4)); |
||
| 2744 | AppendAdrVals(&AdrVals); |
||
| 2745 | break; |
||
| 2746 | default: |
||
| 2747 | break; |
||
| 2748 | } |
||
| 2749 | } |
||
| 2750 | |||
| 2751 | /*!------------------------------------------------------------------------ |
||
| 2752 | * \fn DecodeMREQ(Word Code) |
||
| 2753 | * \brief decode MREQ instruction |
||
| 2754 | * \param Code instruction code |
||
| 2755 | * ------------------------------------------------------------------------ */ |
||
| 2756 | |||
| 2757 | static void DecodeMREQ(Word Code) |
||
| 2758 | { |
||
| 2759 | tAdrVals AdrVals; |
||
| 2760 | |||
| 2761 | SetOpSize(eSymbolSize16Bit, &OpPart); |
||
| 2762 | if (ChkArgCnt(1, 1) |
||
| 2763 | && CheckSup(True) |
||
| 2764 | && DecodeAdr(&ArgStr[1], MModReg, &AdrVals)) |
||
| 2765 | AppendCode(Code | (AdrVals.Val << 4)); |
||
| 2766 | } |
||
| 2767 | |||
| 2768 | /*!------------------------------------------------------------------------ |
||
| 2769 | * \fn DecodePUSH_POP(Word Code) |
||
| 2770 | * \brief decode PUSH(L)/POP(L) |
||
| 2771 | * \param Code machine code & size |
||
| 2772 | * ------------------------------------------------------------------------ */ |
||
| 2773 | |||
| 2774 | static void DecodePUSH_POP(Word Code) |
||
| 2775 | { |
||
| 2776 | tAdrVals RegAdrVals; |
||
| 2777 | Word IsPOP = Code & 0x04; |
||
| 2778 | int OpArg = !IsPOP + 1, RegArg = 3 - OpArg; |
||
| 2779 | |||
| 2780 | if (SetOpSizeFromCode(Code) |
||
| 2781 | && ChkArgCnt(2, 2) |
||
| 2782 | && DecodeAdr(&ArgStr[RegArg], MModIReg, &RegAdrVals)) |
||
| 2783 | { |
||
| 2784 | tAdrVals OpAdrVals; |
||
| 2785 | |||
| 2786 | ImmOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 2787 | if (DecodeAdr(&ArgStr[OpArg], MModReg | MModIReg | MModDirect | MModIndexed | (IsPOP ? 0 : MModImm), &OpAdrVals)) |
||
| 2788 | { |
||
| 2789 | int Index; |
||
| 2790 | |||
| 2791 | if (OpSize == eSymbolSizeUnknown) |
||
| 2792 | OpSize = eSymbolSize16Bit; |
||
| 2793 | if ((OpSize < eSymbolSize16Bit) || (OpSize > eSymbolSize32Bit)) |
||
| 2794 | { |
||
| 2795 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[OpArg]); |
||
| 2796 | return; |
||
| 2797 | } |
||
| 2798 | switch (OpAdrVals.Mode) |
||
| 2799 | { |
||
| 2800 | case eModReg: |
||
| 2801 | Index = ChkRegOverlap((unsigned)OpAdrVals.Val, OpSize, |
||
| 2802 | (unsigned)RegAdrVals.Val, (int)AddrRegSize(), |
||
| 2803 | 0, eSymbolSizeUnknown); |
||
| 2804 | break; |
||
| 2805 | case eModIReg: |
||
| 2806 | Index = ChkRegOverlap((unsigned)OpAdrVals.Val, AddrRegSize(), |
||
| 2807 | (unsigned)RegAdrVals.Val, (int)AddrRegSize(), |
||
| 2808 | 0, eSymbolSizeUnknown); |
||
| 2809 | break; |
||
| 2810 | case eModIndexed: |
||
| 2811 | Index = ChkRegOverlap((unsigned)OpAdrVals.Val, eSymbolSize16Bit, |
||
| 2812 | (unsigned)RegAdrVals.Val, (int)AddrRegSize(), |
||
| 2813 | 0, eSymbolSizeUnknown); |
||
| 2814 | break; |
||
| 2815 | default: |
||
| 2816 | Index = -1; |
||
| 2817 | break; |
||
| 2818 | } |
||
| 2819 | if (Index >= 0) |
||
| 2820 | WrStrErrorPos(ErrNum_OverlapReg, &ArgStr[Index ? RegArg : OpArg]); |
||
| 2821 | Code = Lo(Code) | ((OpSize == eSymbolSize16Bit) ? 2 : 0); |
||
| 2822 | switch (OpAdrVals.Mode) |
||
| 2823 | { |
||
| 2824 | case eModImm: |
||
| 2825 | if (OpSize != eSymbolSize16Bit) WrStrErrorPos(ErrNum_InvOpSize, &OpPart); |
||
| 2826 | else |
||
| 2827 | { |
||
| 2828 | AppendCode(0x0d09 | (RegAdrVals.Val << 4)); |
||
| 2829 | AppendAdrVals(&OpAdrVals); |
||
| 2830 | } |
||
| 2831 | break; |
||
| 2832 | case eModReg: |
||
| 2833 | AppendCode(0x8000 | (Code << 8) | (RegAdrVals.Val << 4) | OpAdrVals.Val); |
||
| 2834 | break; |
||
| 2835 | case eModIReg: |
||
| 2836 | AppendCode(0x0000 | (Code << 8) | (RegAdrVals.Val << 4) | OpAdrVals.Val); |
||
| 2837 | break; |
||
| 2838 | case eModDirect: |
||
| 2839 | case eModIndexed: |
||
| 2840 | AppendCode(0x4000 | (Code << 8) | (RegAdrVals.Val << 4) | OpAdrVals.Val); |
||
| 2841 | AppendAdrVals(&OpAdrVals); |
||
| 2842 | break; |
||
| 2843 | default: |
||
| 2844 | break; |
||
| 2845 | } |
||
| 2846 | } |
||
| 2847 | } |
||
| 2848 | } |
||
| 2849 | |||
| 2850 | /*!------------------------------------------------------------------------ |
||
| 2851 | * \fn DecodeRET(Word Code) |
||
| 2852 | * \brief decode RET instruction |
||
| 2853 | * \param Code machine code |
||
| 2854 | * ------------------------------------------------------------------------ */ |
||
| 2855 | |||
| 2856 | static void DecodeRET(Word Code) |
||
| 2857 | { |
||
| 2858 | Word Condition; |
||
| 2859 | |||
| 2860 | if (ChkArgCnt(0, 1) |
||
| 2861 | && DecodeCondition((ArgCnt >= 1) ? &ArgStr[1] : NULL, &Condition)) |
||
| 2862 | AppendCode(Code | Condition); |
||
| 2863 | } |
||
| 2864 | |||
| 2865 | /*!------------------------------------------------------------------------ |
||
| 2866 | * \fn DecodeRotate(Word Code) |
||
| 2867 | * \brief handle rotate instructions |
||
| 2868 | * \param Code machine code |
||
| 2869 | * ------------------------------------------------------------------------ */ |
||
| 2870 | |||
| 2871 | static void DecodeRotate(Word Code) |
||
| 2872 | { |
||
| 2873 | tAdrVals RegAdrVals; |
||
| 2874 | |||
| 2875 | if (ChkArgCnt(1, 2) |
||
| 2876 | && SetOpSizeFromCode(Code) |
||
| 2877 | && DecodeAdr(&ArgStr[1], MModReg, &RegAdrVals)) |
||
| 2878 | { |
||
| 2879 | Word Count = 1; |
||
| 2880 | tEvalResult EvalResult; |
||
| 2881 | |||
| 2882 | if (OpSize > eSymbolSize16Bit) |
||
| 2883 | { |
||
| 2884 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2885 | return; |
||
| 2886 | } |
||
| 2887 | if (ArgCnt >= 2) |
||
| 2888 | { |
||
| 2889 | Count = EvalStrIntExpressionOffsWithResult(&ArgStr[2], !!(*ArgStr[2].str.p_str == '#'), UInt2, &EvalResult); |
||
| 2890 | if (EvalResult.OK && mFirstPassUnknownOrQuestionable(EvalResult.Flags)) |
||
| 2891 | Count = 1; |
||
| 2892 | } |
||
| 2893 | if (ChkRange(Count, 1, 2)) |
||
| 2894 | AppendCode(0xb200 | (OpSize << 8) | (RegAdrVals.Val << 4) | Lo(Code) | ((Count - 1) << 1)); |
||
| 2895 | } |
||
| 2896 | } |
||
| 2897 | |||
| 2898 | /*!------------------------------------------------------------------------ |
||
| 2899 | * \fn DecodeRotateDigit(Word Code) |
||
| 2900 | * \brief decode nibble-wide rotates |
||
| 2901 | * \param Code machine code |
||
| 2902 | * ------------------------------------------------------------------------ */ |
||
| 2903 | |||
| 2904 | static void DecodeRotateDigit(Word Code) |
||
| 2905 | { |
||
| 2906 | tAdrVals LinkAdrVals, SrcAdrVals; |
||
| 2907 | |||
| 2908 | SetOpSize(eSymbolSize8Bit, &OpPart); |
||
| 2909 | if (ChkArgCnt(2, 2) |
||
| 2910 | && DecodeAdr(&ArgStr[1], MModReg, &LinkAdrVals) |
||
| 2911 | && DecodeAdr(&ArgStr[2], MModReg, &SrcAdrVals)) |
||
| 2912 | AppendCode(Code | (SrcAdrVals.Val << 4) | LinkAdrVals.Val); |
||
| 2913 | } |
||
| 2914 | |||
| 2915 | /*!------------------------------------------------------------------------ |
||
| 2916 | * \fn DecodeSC(Word Code) |
||
| 2917 | * \brief decode SC instruction |
||
| 2918 | * \param Code machine code |
||
| 2919 | * ------------------------------------------------------------------------ */ |
||
| 2920 | |||
| 2921 | static void DecodeSC(Word Code) |
||
| 2922 | { |
||
| 2923 | if (ChkArgCnt(1, 1)) |
||
| 2924 | { |
||
| 2925 | Boolean OK; |
||
| 2926 | Word Arg = EvalStrIntExpressionOffs(&ArgStr[1], !!(*ArgStr[1].str.p_str == '#'), Int8, &OK); |
||
| 2927 | |||
| 2928 | if (OK) |
||
| 2929 | AppendCode(Code | (Arg & 0xff)); |
||
| 2930 | } |
||
| 2931 | } |
||
| 2932 | |||
| 2933 | /*!------------------------------------------------------------------------ |
||
| 2934 | * \fn DecodeSD(Word Code) |
||
| 2935 | * \brief decode dynamic shifts |
||
| 2936 | * \param Code machine code |
||
| 2937 | * ------------------------------------------------------------------------ */ |
||
| 2938 | |||
| 2939 | static void DecodeSD(Word Code) |
||
| 2940 | { |
||
| 2941 | tAdrVals DestAdrVals; |
||
| 2942 | |||
| 2943 | if (ChkArgCnt(2, 2) |
||
| 2944 | && SetOpSizeFromCode(Code) |
||
| 2945 | && DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals)) |
||
| 2946 | { |
||
| 2947 | tAdrVals SrcAdrVals; |
||
| 2948 | tSymbolSize SaveOpSize = (OpSize == eSymbolSizeUnknown) ? eSymbolSize16Bit : OpSize; |
||
| 2949 | |||
| 2950 | if (SaveOpSize > eSymbolSize32Bit) |
||
| 2951 | { |
||
| 2952 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2953 | return; |
||
| 2954 | } |
||
| 2955 | OpSize = eSymbolSize16Bit; |
||
| 2956 | if (DecodeAdr(&ArgStr[2], MModReg, &SrcAdrVals)) |
||
| 2957 | { |
||
| 2958 | AppendCode(0xb200 | (((SaveOpSize == eSymbolSize32Bit) ? 1 : SaveOpSize) << 8) | (DestAdrVals.Val << 4) | Lo(Code) | (SaveOpSize == eSymbolSize32Bit ? 4 : 0)); |
||
| 2959 | AppendCode(SrcAdrVals.Val << 8); |
||
| 2960 | } |
||
| 2961 | } |
||
| 2962 | } |
||
| 2963 | |||
| 2964 | /*!------------------------------------------------------------------------ |
||
| 2965 | * \fn DecodeShift(Word Code) |
||
| 2966 | * \brief decode statuc shifts |
||
| 2967 | * \param Code machine code |
||
| 2968 | * ------------------------------------------------------------------------ */ |
||
| 2969 | |||
| 2970 | static void DecodeShift(Word Code) |
||
| 2971 | { |
||
| 2972 | tAdrVals DestAdrVals; |
||
| 2973 | |||
| 2974 | if (ChkArgCnt(1, 2) |
||
| 2975 | && SetOpSizeFromCode(Code) |
||
| 2976 | && DecodeAdr(&ArgStr[1], MModReg, &DestAdrVals)) |
||
| 2977 | { |
||
| 2978 | Word Count; |
||
| 2979 | Word Negate = Code & 0x80; |
||
| 2980 | |||
| 2981 | if (OpSize == eSymbolSizeUnknown) |
||
| 2982 | OpSize = eSymbolSize16Bit; |
||
| 2983 | if (OpSize > eSymbolSize32Bit) |
||
| 2984 | { |
||
| 2985 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[1]); |
||
| 2986 | return; |
||
| 2987 | } |
||
| 2988 | |||
| 2989 | if (ArgCnt >= 2) |
||
| 2990 | { |
||
| 2991 | tEvalResult EvalResult; |
||
| 2992 | |||
| 2993 | Count = EvalStrIntExpressionOffsWithResult(&ArgStr[2], !!(*ArgStr[2].str.p_str == '#'), (OpSize == eSymbolSize32Bit) ? UInt6 : (OpSize == eSymbolSize16Bit) ? UInt5 : UInt4, &EvalResult); |
||
| 2994 | if (mFirstPassUnknownOrQuestionable(EvalResult.Flags)) |
||
| 2995 | Count = 1; |
||
| 2996 | if (!ChkRange(Count, Negate ? 1 : 0, 8 << OpSize)) |
||
| 2997 | return; |
||
| 2998 | } |
||
| 2999 | else |
||
| 3000 | Count = 1; |
||
| 3001 | |||
| 3002 | if (Negate) |
||
| 3003 | { |
||
| 3004 | Code ^= Negate; |
||
| 3005 | Count = 0x10000ul - Count; |
||
| 3006 | if (OpSize == eSymbolSize8Bit) |
||
| 3007 | Count &= 0xff; |
||
| 3008 | } |
||
| 3009 | AppendCode(0xb200 | (((OpSize == eSymbolSize32Bit) ? 1 : OpSize) << 8) | (DestAdrVals.Val << 4) | Lo(Code) | (OpSize == eSymbolSize32Bit ? 4 : 0)); |
||
| 3010 | AppendCode(Count); |
||
| 3011 | } |
||
| 3012 | } |
||
| 3013 | |||
| 3014 | /*!------------------------------------------------------------------------ |
||
| 3015 | * \fn DecodeTCC(Word Code) |
||
| 3016 | * \brief decode TCC instruction |
||
| 3017 | * \param Code machine code |
||
| 3018 | * ------------------------------------------------------------------------ */ |
||
| 3019 | |||
| 3020 | static void DecodeTCC(Word Code) |
||
| 3021 | { |
||
| 3022 | Word Condition; |
||
| 3023 | tAdrVals DestAdrVals; |
||
| 3024 | |||
| 3025 | if (ChkArgCnt(1, 2) |
||
| 3026 | && SetOpSizeFromCode(Code) |
||
| 3027 | && DecodeCondition((ArgCnt == 2) ? &ArgStr[1] : NULL, &Condition) |
||
| 3028 | && DecodeAdr(&ArgStr[ArgCnt], MModReg, &DestAdrVals)) |
||
| 3029 | { |
||
| 3030 | if (OpSize > eSymbolSize16Bit) |
||
| 3031 | { |
||
| 3032 | WrStrErrorPos(ErrNum_InvOpSize, &ArgStr[2]); |
||
| 3033 | return; |
||
| 3034 | } |
||
| 3035 | AppendCode(0xae00 | (OpSize << 8) | (DestAdrVals.Val << 4) | Condition); |
||
| 3036 | } |
||
| 3037 | } |
||
| 3038 | |||
| 3039 | /*!------------------------------------------------------------------------ |
||
| 3040 | * \fn DecodePORT(Word Code) |
||
| 3041 | * \brief decode PORT instruction |
||
| 3042 | * ------------------------------------------------------------------------ */ |
||
| 3043 | |||
| 3044 | static void DecodePORT(Word Code) |
||
| 3045 | { |
||
| 3046 | UNUSED(Code); |
||
| 3047 | CodeEquate(SegIO, 0, SegLimits[SegIO]); |
||
| 3048 | } |
||
| 3049 | |||
| 3050 | /*!------------------------------------------------------------------------ |
||
| 3051 | * \fn DecodeDEFBIT(Word Code) |
||
| 3052 | * \brief decode DEFBIT(B) instructions |
||
| 3053 | * \param Code machine code |
||
| 3054 | * ------------------------------------------------------------------------ */ |
||
| 3055 | |||
| 3056 | static void DecodeDEFBIT(Word Code) |
||
| 3057 | { |
||
| 3058 | LongWord BitSpec; |
||
| 3059 | |||
| 3060 | OpSize = (tSymbolSize)Code; |
||
| 3061 | |||
| 3062 | /* if in structure definition, add special element to structure */ |
||
| 3063 | |||
| 3064 | if (ActPC == StructSeg) |
||
| 3065 | { |
||
| 3066 | Boolean OK; |
||
| 3067 | Byte BitPos; |
||
| 3068 | PStructElem pElement; |
||
| 3069 | |||
| 3070 | if (!ChkArgCnt(2, 2)) |
||
| 3071 | return; |
||
| 3072 | BitPos = EvalBitPosition(&ArgStr[2], &OK, OpSize); |
||
| 3073 | if (!OK) |
||
| 3074 | return; |
||
| 3075 | pElement = CreateStructElem(&LabPart); |
||
| 3076 | if (!pElement) |
||
| 3077 | return; |
||
| 3078 | pElement->pRefElemName = as_strdup(ArgStr[1].str.p_str); |
||
| 3079 | pElement->OpSize = OpSize; |
||
| 3080 | pElement->BitPos = BitPos; |
||
| 3081 | pElement->ExpandFnc = ExpandZ8000Bit; |
||
| 3082 | AddStructElem(pInnermostNamedStruct->StructRec, pElement); |
||
| 3083 | } |
||
| 3084 | else |
||
| 3085 | { |
||
| 3086 | if (DecodeBitArg(&BitSpec, 1, ArgCnt, OpSize)) |
||
| 3087 | { |
||
| 3088 | *ListLine = '='; |
||
| 3089 | DissectBit_Z8000(ListLine + 1, STRINGSIZE - 3, BitSpec); |
||
| 3090 | PushLocHandle(-1); |
||
| 3091 | EnterIntSymbol(&LabPart, BitSpec, SegBData, False); |
||
| 3092 | PopLocHandle(); |
||
| 3093 | /* TODO: MakeUseList? */ |
||
| 3094 | } |
||
| 3095 | } |
||
| 3096 | } |
||
| 3097 | |||
| 3098 | /*--------------------------------------------------------------------------*/ |
||
| 3099 | /* Instruction Table Buildup/Teardown */ |
||
| 3100 | |||
| 3101 | /*!------------------------------------------------------------------------ |
||
| 3102 | * \fn InitFields(void) |
||
| 3103 | * \brief Set up hash table |
||
| 3104 | * ------------------------------------------------------------------------ */ |
||
| 3105 | |||
| 3106 | static void AddFixed(const char *NName, Word Code, Boolean Privileged) |
||
| 3107 | { |
||
| 3108 | order_array_rsv_end(FixedOrders, FixedOrder); |
||
| 3109 | FixedOrders[InstrZ].Code = Code; |
||
| 3110 | FixedOrders[InstrZ].Privileged = Privileged; |
||
| 3111 | AddInstTable(InstTable, NName, InstrZ++, DecodeFixed); |
||
| 3112 | } |
||
| 3113 | |||
| 3114 | static void AddCtl(const char *pName, Word Code, tCtlFlags Flags, tSymbolSize Size) |
||
| 3115 | { |
||
| 3116 | order_array_rsv_end(CtlRegs, tCtlReg); |
||
| 3117 | CtlRegs[InstrZ ].pName = pName; |
||
| 3118 | CtlRegs[InstrZ ].Code = Code; |
||
| 3119 | CtlRegs[InstrZ ].Flags = Flags; |
||
| 3120 | CtlRegs[InstrZ++].Size = Size; |
||
| 3121 | } |
||
| 3122 | |||
| 3123 | static void AddCondition(const char *pName, Word Code) |
||
| 3124 | { |
||
| 3125 | order_array_rsv_end(Conditions, tCondition); |
||
| 3126 | Conditions[InstrZ].pName = pName; |
||
| 3127 | Conditions[InstrZ++].Code = Code; |
||
| 3128 | } |
||
| 3129 | |||
| 3130 | static void AddSizeInstTable(const char *pName, unsigned SizeMask, Word Code, InstProc Proc) |
||
| 3131 | { |
||
| 3132 | char Name[20]; |
||
| 3133 | |||
| 3134 | AddInstTable(InstTable, pName, Code | 0xff00, Proc); |
||
| 3135 | if (SizeMask & (1 << eSymbolSize8Bit)) |
||
| 3136 | { |
||
| 3137 | as_snprintf(Name, sizeof(Name), "%sB", pName); |
||
| 3138 | AddInstTable(InstTable, Name, Code | (eSymbolSize8Bit << 8), Proc); |
||
| 3139 | } |
||
| 3140 | if (SizeMask & (1 << eSymbolSize32Bit)) |
||
| 3141 | { |
||
| 3142 | as_snprintf(Name, sizeof(Name), "%sL", pName); |
||
| 3143 | AddInstTable(InstTable, Name, Code | (eSymbolSize32Bit << 8), Proc); |
||
| 3144 | } |
||
| 3145 | } |
||
| 3146 | |||
| 3147 | static void InitFields(void) |
||
| 3148 | { |
||
| 3149 | InstTable = CreateInstTable(302); |
||
| 3150 | SetDynamicInstTable(InstTable); |
||
| 3151 | |||
| 3152 | add_null_pseudo(InstTable); |
||
| 3153 | |||
| 3154 | InstrZ = 0; |
||
| 3155 | AddFixed("HALT" , 0x7a00 , True ); |
||
| 3156 | AddFixed("IRET" , 0x7b00 , True ); |
||
| 3157 | AddFixed("MBIT" , 0x7b0a , True ); |
||
| 3158 | AddFixed("MRES" , 0x7b09 , True ); |
||
| 3159 | AddFixed("MSET" , 0x7b08 , True ); |
||
| 3160 | AddFixed("NOP" , NOPCode, False); |
||
| 3161 | |||
| 3162 | InstrZ = 0; |
||
| 3163 | AddCtl("FCW" , 2, ePrivileged | eSegMode | eNonSegMode , eSymbolSize16Bit); |
||
| 3164 | AddCtl("REFRESH" , 3, ePrivileged | eSegMode | eNonSegMode , eSymbolSize16Bit); |
||
| 3165 | AddCtl("PSAPSEG" , 4, ePrivileged | eSegMode , eSymbolSize16Bit); |
||
| 3166 | AddCtl("PSAPOFF" , 5, ePrivileged | eSegMode | eNonSegMode , eSymbolSize16Bit); |
||
| 3167 | AddCtl("PSAP" , 5, ePrivileged | eNonSegMode , eSymbolSize16Bit); |
||
| 3168 | AddCtl("NSPSEG" , 6, ePrivileged | eSegMode , eSymbolSize16Bit); |
||
| 3169 | AddCtl("NSPOFF" , 7, ePrivileged | eSegMode | eNonSegMode , eSymbolSize16Bit); |
||
| 3170 | AddCtl("NSP" , 7, ePrivileged | eNonSegMode , eSymbolSize16Bit); |
||
| 3171 | AddCtl("FLAGS" , 1, eSegMode | eNonSegMode , eSymbolSize8Bit ); |
||
| 3172 | CtlRegCnt = InstrZ; |
||
| 3173 | |||
| 3174 | InstrZ = 0; |
||
| 3175 | AddCondition("" , 0x08); |
||
| 3176 | AddCondition("F" , 0x00); |
||
| 3177 | AddCondition("LT" , 0x01); |
||
| 3178 | AddCondition("LE" , 0x02); |
||
| 3179 | AddCondition("ULE", 0x03); |
||
| 3180 | AddCondition("PE" , 0x04); |
||
| 3181 | AddCondition("MI" , 0x05); |
||
| 3182 | AddCondition("Z" , 0x06); |
||
| 3183 | AddCondition("ULT", 0x07); |
||
| 3184 | AddCondition("GE" , 0x09); |
||
| 3185 | AddCondition("GT" , 0x0a); |
||
| 3186 | AddCondition("UGT", 0x0b); |
||
| 3187 | AddCondition("PO" , 0x0c); |
||
| 3188 | AddCondition("PL" , 0x0d); |
||
| 3189 | AddCondition("NZ" , 0x0e); |
||
| 3190 | AddCondition("UGE", 0x0f); |
||
| 3191 | AddCondition("OV" , 0x04); |
||
| 3192 | AddCondition("EQ" , 0x06); |
||
| 3193 | AddCondition("C" , 0x07); |
||
| 3194 | AddCondition("NOV", 0x0c); |
||
| 3195 | AddCondition("NE" , 0x0e); |
||
| 3196 | AddCondition("NC" , 0x0f); |
||
| 3197 | |||
| 3198 | /* non-Zilog conditions */ |
||
| 3199 | |||
| 3200 | AddCondition("ZR" , 0x06); |
||
| 3201 | AddCondition("CY" , 0x07); |
||
| 3202 | AddCondition("LLE", 0x03); |
||
| 3203 | AddCondition("LLT", 0x07); |
||
| 3204 | AddCondition("LGT", 0x0b); |
||
| 3205 | AddCondition("LGE", 0x0f); |
||
| 3206 | AddCondition(NULL , 0); |
||
| 3207 | |||
| 3208 | |||
| 3209 | AddSizeInstTable("LD" , (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0, DecodeLD); |
||
| 3210 | AddInstTable(InstTable, "LDA" , 0, DecodeLDA); |
||
| 3211 | AddInstTable(InstTable, "LDAR", 0x3400, DecodeLDAR); |
||
| 3212 | AddInstTable(InstTable, "LDK" , 0xbd00, DecodeLDK); |
||
| 3213 | AddInstTable(InstTable, "LDM" , 0x1c01, DecodeLDM); |
||
| 3214 | AddInstTable(InstTable, "LDPS", 0x3900, DecodeLDPS); |
||
| 3215 | AddSizeInstTable("LDR", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x30, DecodeLDR); |
||
| 3216 | AddSizeInstTable("LDCTL", 1 << eSymbolSize8Bit, 0x00, DecodeLDCTL); |
||
| 3217 | AddSizeInstTable("ADD" , (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0, DecodeADD); |
||
| 3218 | AddSizeInstTable("SUB" , (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0, DecodeSUB); |
||
| 3219 | AddSizeInstTable("CP" , (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0, DecodeCP); |
||
| 3220 | AddSizeInstTable("ADC" , 1 << eSymbolSize8Bit, 0x34, DecodeADC_SBC); |
||
| 3221 | AddSizeInstTable("SBC" , 1 << eSymbolSize8Bit, 0x36, DecodeADC_SBC); |
||
| 3222 | AddSizeInstTable("AND" , 1 << eSymbolSize8Bit, 0x06, DecodeAND_OR_XOR); |
||
| 3223 | AddSizeInstTable("OR" , 1 << eSymbolSize8Bit, 0x04, DecodeAND_OR_XOR); |
||
| 3224 | AddSizeInstTable("XOR" , 1 << eSymbolSize8Bit, 0x08, DecodeAND_OR_XOR); |
||
| 3225 | AddSizeInstTable("INC" , 1 << eSymbolSize8Bit, 0x28, DecodeINC_DEC); |
||
| 3226 | AddSizeInstTable("DEC" , 1 << eSymbolSize8Bit, 0x2a, DecodeINC_DEC); |
||
| 3227 | AddSizeInstTable("BIT" , 1 << eSymbolSize8Bit, 0x26, DecodeBitOp); |
||
| 3228 | AddSizeInstTable("DIV" , 1 << eSymbolSize32Bit, 0x1a, DecodeMULT_DIV); |
||
| 3229 | AddSizeInstTable("MULT", 1 << eSymbolSize32Bit, 0x18, DecodeMULT_DIV); |
||
| 3230 | AddSizeInstTable("RES" , 1 << eSymbolSize8Bit, 0x22, DecodeBitOp); |
||
| 3231 | AddSizeInstTable("SET" , 1 << eSymbolSize8Bit, 0x24, DecodeBitOp); |
||
| 3232 | AddInstTable(InstTable, "CALL", 0x1f, DecodeCALL_JP); |
||
| 3233 | AddInstTable(InstTable, "JP" , 0x1e, DecodeCALL_JP); |
||
| 3234 | AddInstTable(InstTable, "CALR", 0xd000, DecodeCALR); |
||
| 3235 | AddInstTable(InstTable, "JR" , 0xe000, DecodeJR); |
||
| 3236 | AddInstTable(InstTable, "DJNZ" , 0xff00, DecodeDJNZ); |
||
| 3237 | AddInstTable(InstTable, "DBJNZ", eSymbolSize8Bit << 8, DecodeDJNZ); |
||
| 3238 | AddInstTable(InstTable, "RET", 0x9e00, DecodeRET); |
||
| 3239 | AddSizeInstTable("CLR" , 1 << eSymbolSize8Bit, 0x8c, DecodeCLR_COM_NEG_TSET); |
||
| 3240 | AddSizeInstTable("COM" , 1 << eSymbolSize8Bit, 0x0c, DecodeCLR_COM_NEG_TSET); |
||
| 3241 | AddSizeInstTable("NEG" , 1 << eSymbolSize8Bit, 0x2c, DecodeCLR_COM_NEG_TSET); |
||
| 3242 | AddSizeInstTable("TSET", 1 << eSymbolSize8Bit, 0x6c, DecodeCLR_COM_NEG_TSET); |
||
| 3243 | AddSizeInstTable("TEST", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x0c, DecodeTEST); |
||
| 3244 | AddSizeInstTable("EX", 1 << eSymbolSize8Bit, 0x2c, DecodeEX); |
||
| 3245 | AddSizeInstTable("EXTS", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x31, DecodeEXTS); |
||
| 3246 | AddInstTable(InstTable, "DAB", 0xb000, DecodeDAB); |
||
| 3247 | AddInstTable(InstTable, "COMFLG", 0x8d05, DecodeFLG); |
||
| 3248 | AddInstTable(InstTable, "SETFLG", 0x8d01, DecodeFLG); |
||
| 3249 | AddInstTable(InstTable, "RESFLG", 0x8d03, DecodeFLG); |
||
| 3250 | AddInstTable(InstTable, "DI", 0x7c00, DecodeDI_EI); |
||
| 3251 | AddInstTable(InstTable, "EI", 0x7c04, DecodeDI_EI); |
||
| 3252 | AddInstTable(InstTable, "MREQ", 0x7b0d, DecodeMREQ); |
||
| 3253 | AddSizeInstTable("IN" , 1 << eSymbolSize8Bit, 0x00, DecodeIN_SIN_OUT_SOUT); |
||
| 3254 | AddSizeInstTable("SIN" , 1 << eSymbolSize8Bit, 0x01, DecodeIN_SIN_OUT_SOUT); |
||
| 3255 | AddSizeInstTable("OUT" , 1 << eSymbolSize8Bit, 0x02, DecodeIN_SIN_OUT_SOUT); |
||
| 3256 | AddSizeInstTable("SOUT", 1 << eSymbolSize8Bit, 0x03, DecodeIN_SIN_OUT_SOUT); |
||
| 3257 | AddSizeInstTable("CPD" , 1 << eSymbolSize8Bit, 0x08, DecodeCPRep); |
||
| 3258 | AddSizeInstTable("CPDR" , 1 << eSymbolSize8Bit, 0x0c, DecodeCPRep); |
||
| 3259 | AddSizeInstTable("CPI" , 1 << eSymbolSize8Bit, 0x00, DecodeCPRep); |
||
| 3260 | AddSizeInstTable("CPIR" , 1 << eSymbolSize8Bit, 0x04, DecodeCPRep); |
||
| 3261 | AddSizeInstTable("CPSD" , 1 << eSymbolSize8Bit, 0x0a, DecodeCPRep); |
||
| 3262 | AddSizeInstTable("CPSDR", 1 << eSymbolSize8Bit, 0x0e, DecodeCPRep); |
||
| 3263 | AddSizeInstTable("CPSI" , 1 << eSymbolSize8Bit, 0x02, DecodeCPRep); |
||
| 3264 | AddSizeInstTable("CPSIR", 1 << eSymbolSize8Bit, 0x06, DecodeCPRep); |
||
| 3265 | AddSizeInstTable("IND" , 1 << eSymbolSize8Bit, 0x88, DecodeINOUTRep); |
||
| 3266 | AddSizeInstTable("INDR" , 1 << eSymbolSize8Bit, 0x80, DecodeINOUTRep); |
||
| 3267 | AddSizeInstTable("SIND" , 1 << eSymbolSize8Bit, 0x98, DecodeINOUTRep); |
||
| 3268 | AddSizeInstTable("SINDR", 1 << eSymbolSize8Bit, 0x90, DecodeINOUTRep); |
||
| 3269 | AddSizeInstTable("INI" , 1 << eSymbolSize8Bit, 0x08, DecodeINOUTRep); |
||
| 3270 | AddSizeInstTable("INIR" , 1 << eSymbolSize8Bit, 0x00, DecodeINOUTRep); |
||
| 3271 | AddSizeInstTable("SINI" , 1 << eSymbolSize8Bit, 0x18, DecodeINOUTRep); |
||
| 3272 | AddSizeInstTable("SINIR", 1 << eSymbolSize8Bit, 0x10, DecodeINOUTRep); |
||
| 3273 | AddSizeInstTable("OUTD" , 1 << eSymbolSize8Bit, 0xa8, DecodeINOUTRep); |
||
| 3274 | AddSizeInstTable("OTDR" , 1 << eSymbolSize8Bit, 0xa0, DecodeINOUTRep); |
||
| 3275 | AddSizeInstTable("SOUTD", 1 << eSymbolSize8Bit, 0xb8, DecodeINOUTRep); |
||
| 3276 | AddSizeInstTable("SOTDR", 1 << eSymbolSize8Bit, 0xb0, DecodeINOUTRep); |
||
| 3277 | AddSizeInstTable("OUTI" , 1 << eSymbolSize8Bit, 0x28, DecodeINOUTRep); |
||
| 3278 | AddSizeInstTable("OTIR" , 1 << eSymbolSize8Bit, 0x20, DecodeINOUTRep); |
||
| 3279 | AddSizeInstTable("SOUTI", 1 << eSymbolSize8Bit, 0x38, DecodeINOUTRep); |
||
| 3280 | AddSizeInstTable("SOTIR", 1 << eSymbolSize8Bit, 0x30, DecodeINOUTRep); |
||
| 3281 | AddSizeInstTable("LDD" , 1 << eSymbolSize8Bit, 0x98, DecodeLDRep); |
||
| 3282 | AddSizeInstTable("LDDR" , 1 << eSymbolSize8Bit, 0x90, DecodeLDRep); |
||
| 3283 | AddSizeInstTable("LDI" , 1 << eSymbolSize8Bit, 0x18, DecodeLDRep); |
||
| 3284 | AddSizeInstTable("LDIR" , 1 << eSymbolSize8Bit, 0x10, DecodeLDRep); |
||
| 3285 | AddInstTable(InstTable, "TRDB" , 0x80, DecodeTRRep); |
||
| 3286 | AddInstTable(InstTable, "TRDRB" , 0xc0, DecodeTRRep); |
||
| 3287 | AddInstTable(InstTable, "TRIB" , 0x00, DecodeTRRep); |
||
| 3288 | AddInstTable(InstTable, "TRIRB" , 0x40, DecodeTRRep); |
||
| 3289 | AddInstTable(InstTable, "TRTDB" , 0xa0, DecodeTRRep); |
||
| 3290 | AddInstTable(InstTable, "TRTDRB", 0xee, DecodeTRRep); |
||
| 3291 | AddInstTable(InstTable, "TRTIB" , 0x20, DecodeTRRep); |
||
| 3292 | AddInstTable(InstTable, "TRTIRB", 0x6e, DecodeTRRep); |
||
| 3293 | AddSizeInstTable("POP" , 1 << eSymbolSize32Bit, 0x15, DecodePUSH_POP); |
||
| 3294 | AddSizeInstTable("PUSH" , 1 << eSymbolSize32Bit, 0x11, DecodePUSH_POP); |
||
| 3295 | AddSizeInstTable("RL" , 1 << eSymbolSize8Bit, 0x00, DecodeRotate); |
||
| 3296 | AddSizeInstTable("RLC" , 1 << eSymbolSize8Bit, 0x08, DecodeRotate); |
||
| 3297 | AddSizeInstTable("RR" , 1 << eSymbolSize8Bit, 0x04, DecodeRotate); |
||
| 3298 | AddSizeInstTable("RRC" , 1 << eSymbolSize8Bit, 0x0c, DecodeRotate); |
||
| 3299 | AddInstTable(InstTable, "RLDB" , 0xbe00, DecodeRotateDigit); |
||
| 3300 | AddInstTable(InstTable, "RRDB" , 0xbc00, DecodeRotateDigit); |
||
| 3301 | AddSizeInstTable("SDA", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x0b, DecodeSD); |
||
| 3302 | AddSizeInstTable("SDL", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x03, DecodeSD); |
||
| 3303 | AddSizeInstTable("SLA", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x09, DecodeShift); |
||
| 3304 | AddSizeInstTable("SLL", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x01, DecodeShift); |
||
| 3305 | AddSizeInstTable("SRA", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x89, DecodeShift); |
||
| 3306 | AddSizeInstTable("SRL", (1 << eSymbolSize8Bit) | (1 << eSymbolSize32Bit), 0x81, DecodeShift); |
||
| 3307 | AddInstTable(InstTable, "SC", 0x7f00, DecodeSC); |
||
| 3308 | AddSizeInstTable("TCC", 1 << eSymbolSize8Bit, 0x00, DecodeTCC); |
||
| 3309 | |||
| 3310 | AddInstTable(InstTable, "PORT", 0, DecodePORT); |
||
| 3311 | AddInstTable(InstTable, "REG" , 0, CodeREG); |
||
| 3312 | AddInstTable(InstTable, "DEFBIT" , eSymbolSize16Bit, DecodeDEFBIT); |
||
| 3313 | AddInstTable(InstTable, "DEFBITB", eSymbolSize8Bit , DecodeDEFBIT); |
||
| 3314 | |||
| 3315 | AddIntelPseudo(InstTable, eIntPseudoFlag_BigEndian); |
||
| 3316 | } |
||
| 3317 | |||
| 3318 | /*!------------------------------------------------------------------------ |
||
| 3319 | * \fn DeinitFields(void) |
||
| 3320 | * \brief Tear down hash table |
||
| 3321 | * ------------------------------------------------------------------------ */ |
||
| 3322 | |||
| 3323 | static void DeinitFields(void) |
||
| 3324 | { |
||
| 3325 | order_array_free(CtlRegs); |
||
| 3326 | order_array_free(FixedOrders); |
||
| 3327 | order_array_free(Conditions); |
||
| 3328 | |||
| 3329 | DestroyInstTable(InstTable); |
||
| 3330 | } |
||
| 3331 | |||
| 3332 | /*---------------------------------------------------------------------*/ |
||
| 3333 | |||
| 3334 | /*!------------------------------------------------------------------------ |
||
| 3335 | * \fn MakeCode_Z8000(void) |
||
| 3336 | * \brief encode machine instruction |
||
| 3337 | * ------------------------------------------------------------------------ */ |
||
| 3338 | |||
| 3339 | static void MakeCode_Z8000(void) |
||
| 3340 | { |
||
| 3341 | ImmOpSize = OpSize = eSymbolSizeUnknown; |
||
| 3342 | |||
| 3343 | if (!LookupInstTable(InstTable, OpPart.str.p_str)) |
||
| 3344 | WrStrErrorPos(ErrNum_UnknownInstruction, &OpPart); |
||
| 3345 | } |
||
| 3346 | |||
| 3347 | /*!------------------------------------------------------------------------ |
||
| 3348 | * \fn InternSymbol_Z8000(char *pArg, TempResult *pResult) |
||
| 3349 | * \brief handle built-in symbols on Z8000 |
||
| 3350 | * \param pArg source argument |
||
| 3351 | * \param pResult result buffer |
||
| 3352 | * ------------------------------------------------------------------------ */ |
||
| 3353 | |||
| 3354 | static void InternSymbol_Z8000(char *pArg, TempResult *pResult) |
||
| 3355 | { |
||
| 3356 | Word Reg; |
||
| 3357 | tSymbolSize Size; |
||
| 3358 | |||
| 3359 | if (DecodeRegCore(pArg, &Reg, &Size)) |
||
| 3360 | { |
||
| 3361 | pResult->Typ = TempReg; |
||
| 3362 | pResult->DataSize = Size; |
||
| 3363 | pResult->Contents.RegDescr.Reg = Reg; |
||
| 3364 | pResult->Contents.RegDescr.Dissect = DissectReg_Z8000; |
||
| 3365 | pResult->Contents.RegDescr.compare = NULL; |
||
| 3366 | } |
||
| 3367 | } |
||
| 3368 | |||
| 3369 | /*!------------------------------------------------------------------------ |
||
| 3370 | * \fn IsDef_Z8000(void) |
||
| 3371 | * \brief check whether insn makes own use of label |
||
| 3372 | * \return True if yes |
||
| 3373 | * ------------------------------------------------------------------------ */ |
||
| 3374 | |||
| 3375 | static Boolean IsDef_Z8000(void) |
||
| 3376 | { |
||
| 3377 | return Memo("REG") |
||
| 3378 | || Memo("PORT") |
||
| 3379 | || Memo("DEFBIT") |
||
| 3380 | || Memo("DEFBITB"); |
||
| 3381 | } |
||
| 3382 | |||
| 3383 | /*!------------------------------------------------------------------------ |
||
| 3384 | * \fn PotOp(TempResult *pErg, TempResult *pLVal, TempResult *pRVal) |
||
| 3385 | * \brief special ^ operator for AMD syntax |
||
| 3386 | * \param pErg operator result |
||
| 3387 | * \param pRVal input argument |
||
| 3388 | * ------------------------------------------------------------------------ */ |
||
| 3389 | |||
| 3390 | static Boolean PotMonadicOp(TempResult *pErg, TempResult *pLVal, TempResult *pRVal) |
||
| 3391 | { |
||
| 3392 | UNUSED(pLVal); |
||
| 3393 | if (!pRVal) |
||
| 3394 | return False; |
||
| 3395 | |||
| 3396 | /* If in front of a label, takes the address as an 'untyped' value. This |
||
| 3397 | will instruct the address decoder to use immediate instead of direct |
||
| 3398 | addressing: */ |
||
| 3399 | |||
| 3400 | if (pRVal->AddrSpaceMask) |
||
| 3401 | pErg->AddrSpaceMask = 0; |
||
| 3402 | |||
| 3403 | /* Vice-versa, for a constant, this makes an address of it: */ |
||
| 3404 | |||
| 3405 | else |
||
| 3406 | pErg->AddrSpaceMask |= (1 << SegCode); |
||
| 3407 | |||
| 3408 | /* clone remainder as-is */ |
||
| 3409 | |||
| 3410 | pErg->Typ = pRVal->Typ; |
||
| 3411 | pErg->Contents = pRVal->Contents; |
||
| 3412 | pErg->Flags |= (pLVal->Flags & eSymbolFlags_Promotable); |
||
| 3413 | if (pErg->DataSize == eSymbolSizeUnknown) pErg->DataSize = pLVal->DataSize; |
||
| 3414 | return True; |
||
| 3415 | } |
||
| 3416 | |||
| 3417 | static const as_operator_t z8000_operators[] = |
||
| 3418 | { |
||
| 3419 | { "^" ,1 , e_op_monadic, 8, { TempInt | (TempInt << 4), 0, 0, 0 }, PotMonadicOp}, |
||
| 3420 | {NULL, 0 , e_op_monadic, 0, { 0, 0, 0, 0, 0 }, NULL} |
||
| 3421 | }; |
||
| 3422 | |||
| 3423 | /*!------------------------------------------------------------------------ |
||
| 3424 | * \fn SwitchTo_Z8000(void *pUser) |
||
| 3425 | * \brief prepare to assemble code for this target |
||
| 3426 | * \param pUser CPU properties |
||
| 3427 | * ------------------------------------------------------------------------ */ |
||
| 3428 | |||
| 3429 | static Boolean TrueFnc(void) |
||
| 3430 | { |
||
| 3431 | return True; |
||
| 3432 | } |
||
| 3433 | |||
| 3434 | static void SwitchTo_Z8000(void *pUser) |
||
| 3435 | { |
||
| 3436 | const TFamilyDescr *pDescr = FindFamilyByName("Z8000"); |
||
| 3437 | |||
| 3438 | TurnWords = True; |
||
| 3439 | SetIntConstMode(eIntConstModeIntel); |
||
| 3440 | |||
| 3441 | pCurrCPUProps = (const tCPUProps*)pUser; |
||
| 3442 | |||
| 3443 | PCSymbol = "$"; HeaderID = pDescr->Id; |
||
| 3444 | NOPCode = 0x8d07; |
||
| 3445 | DivideChars = ","; HasAttrs = False; |
||
| 3446 | |||
| 3447 | ValidSegs = (1 << SegCode) | (1 << SegIO); |
||
| 3448 | Grans[SegCode] = 1; ListGrans[SegCode] = 2; SegInits[SegCode] = 0; |
||
| 3449 | SegLimits[SegCode] = pCurrCPUProps->SuppSegmented ? 0x7fffff : 0xffff; |
||
| 3450 | Grans[SegIO] = 1; ListGrans[SegIO] = 1; SegInits[SegIO] = 0; |
||
| 3451 | SegLimits[SegIO] = 0xffff; |
||
| 3452 | MemIntType = Segmented() ? UInt23 : UInt16; |
||
| 3453 | |||
| 3454 | MakeCode = MakeCode_Z8000; |
||
| 3455 | IsDef = IsDef_Z8000; |
||
| 3456 | DissectReg = DissectReg_Z8000; |
||
| 3457 | DissectBit = DissectBit_Z8000; |
||
| 3458 | InternSymbol = InternSymbol_Z8000; |
||
| 3459 | SwitchFrom = DeinitFields; |
||
| 3460 | InitFields(); |
||
| 3461 | SetIsOccupiedFnc = TrueFnc; |
||
| 3462 | if (AMDSyntax) |
||
| 3463 | target_operators = z8000_operators; |
||
| 3464 | onoff_supmode_add(); |
||
| 3465 | } |
||
| 3466 | |||
| 3467 | /*!------------------------------------------------------------------------ |
||
| 3468 | * \fn codez8000_init(void) |
||
| 3469 | * \brief register target to AS |
||
| 3470 | * ------------------------------------------------------------------------ */ |
||
| 3471 | |||
| 3472 | static const tCPUProps CPUProps[] = |
||
| 3473 | { |
||
| 3474 | { "Z8001" , eCoreZ8001 , True }, |
||
| 3475 | { "Z8002" , eCoreZ8001 , False }, |
||
| 3476 | { "Z8003" , eCoreZ8003 , True }, |
||
| 3477 | { "Z8004" , eCoreZ8003 , False }, |
||
| 3478 | { NULL , eCoreNone , False } |
||
| 3479 | }; |
||
| 3480 | |||
| 3481 | void codez8000_init(void) |
||
| 3482 | { |
||
| 3483 | const tCPUProps *pRun; |
||
| 3484 | static const tCPUArg Z8000Args[] = |
||
| 3485 | { |
||
| 3486 | { "AMDSYNTAX", 0, 1, 0, &AMDSyntax }, |
||
| 3487 | { NULL , 0, 0, 0, NULL } |
||
| 3488 | }; |
||
| 3489 | |||
| 3490 | for (pRun = CPUProps; pRun->pName; pRun++) |
||
| 3491 | (void)AddCPUUserWithArgs(pRun->pName, SwitchTo_Z8000, (void*)pRun, NULL, Z8000Args); |
||
| 3492 | } |