Started work on new decoding functions
This commit is contained in:
Jeff
Jeff Parsons
parent
a13bb9348a
commit
7f0b6a091d
8 changed files with 852 additions and 732 deletions
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@ -214,7 +214,7 @@ if (DEBUGGER) {
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};
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/*
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* CPU opcode ordinals
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* CPU opcode IDs
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*/
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DebuggerPDP11.OPS = {
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NONE: 0, ADC: 1, ADCB: 2, ADD: 3, ASL: 4, ASLB: 5, ASR: 6, ASRB: 7,
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@ -261,120 +261,119 @@ if (DEBUGGER) {
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DebuggerPDP11.REG_PSW = 20;
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/*
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* Operand descriptor masks; anything that's not covered by TYPE_SRC or TYPE_DST must be a TYPE_OTHER value.
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* Operand type masks; anything that's not covered by OP_SRC or OP_DST must be a OP_OTHER value.
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*/
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DebuggerPDP11.TYPE_DSTREG = 0x0007;
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DebuggerPDP11.TYPE_DSTMODE = 0x0038;
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DebuggerPDP11.TYPE_DSTMODE_SHIFT = 3;
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DebuggerPDP11.TYPE_DST = (DebuggerPDP11.TYPE_DSTMODE | DebuggerPDP11.TYPE_DSTREG);
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DebuggerPDP11.TYPE_SRCREG = 0x01C0;
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DebuggerPDP11.TYPE_SRCMODE = 0x0E00;
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DebuggerPDP11.TYPE_SRC = (DebuggerPDP11.TYPE_SRCMODE | DebuggerPDP11.TYPE_SRCREG);
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DebuggerPDP11.TYPE_BRANCH = 0x1000;
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DebuggerPDP11.TYPE_DSTOFF = 0x2000;
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DebuggerPDP11.TYPE_DSTNUM3 = 0x3000; // DST 3-bit number (ie, just the DSTREG field)
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DebuggerPDP11.TYPE_DSTNUM6 = 0x6000; // DST 6-bit number (ie, both the DSTREG and DSTMODE fields)
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DebuggerPDP11.TYPE_OTHER = 0xF000;
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DebuggerPDP11.OP_DSTREG = PDP11.OPREG.MASK;
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DebuggerPDP11.OP_DSTMODE = PDP11.OPMODE.MASK;
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DebuggerPDP11.OP_DST = (DebuggerPDP11.OP_DSTMODE | DebuggerPDP11.OP_DSTREG);
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DebuggerPDP11.OP_SRCREG = PDP11.OPREG.MASK << 6;
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DebuggerPDP11.OP_SRCMODE = PDP11.OPMODE.MASK << 6;
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DebuggerPDP11.OP_SRC = (DebuggerPDP11.OP_SRCMODE | DebuggerPDP11.OP_SRCREG);
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DebuggerPDP11.OP_BRANCH = 0x1000;
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DebuggerPDP11.OP_DSTOFF = 0x2000;
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DebuggerPDP11.OP_DSTNUM3 = 0x3000; // DST 3-bit number (ie, just the DSTREG field)
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DebuggerPDP11.OP_DSTNUM6 = 0x6000; // DST 6-bit number (ie, both the DSTREG and DSTMODE fields)
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DebuggerPDP11.OP_OTHER = 0xF000;
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/*
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* The opMasks table contains opcode masks, and each mask refers to table of possible values, and each
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* The opTable contains opcode masks, and each mask refers to table of possible values, and each
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* value refers to an array that contains:
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*
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* [0]: {number} of the opcode name (see OP.*)
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* [1]: {number} containing the first operand descriptor bit(s), if any
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* [2]: {number} containing the second operand descriptor bit(s), if any
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* [1]: {number} containing the first operand type bit(s), if any
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* [2]: {number} containing the second operand type bit(s), if any
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*
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* Note that, by convention, opcodes that require two operands list the SRC operand first and DST operand
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* second (ie, the OPPOSITE of the Intel convention).
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*
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* Also note that, for some of the newer PDP-11 opcodes (eg, MUL, DIV, ASH, ASHC), the location of the
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* opcode's SRC and DST bits are reversed. This is why, for example, you'll see the MUL instruction defined
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* below as having TYPE_DST for the first operand and TYPE_SRCREG for the second operand. This does NOT mean
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* below as having OP_DST for the first operand and OP_SRCREG for the second operand. This does NOT mean
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* that the opcode's destination operand is being listed first, but rather that the bits describing the source
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* operand are in the opcode's TYPE_DST field.
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* operand are in the opcode's OP_DST field.
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*/
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DebuggerPDP11.opMasks = {
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DebuggerPDP11.opTable = {
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0xF000: {
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0x1000: [DebuggerPDP11.OPS.MOV, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 01SSDD
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0x2000: [DebuggerPDP11.OPS.CMP, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 02SSDD
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0x3000: [DebuggerPDP11.OPS.BIT, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 03SSDD
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0x4000: [DebuggerPDP11.OPS.BIC, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 04SSDD
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0x5000: [DebuggerPDP11.OPS.BIS, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 05SSDD
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0x6000: [DebuggerPDP11.OPS.ADD, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 06SSDD
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0x9000: [DebuggerPDP11.OPS.MOVB, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 11SSDD
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0xA000: [DebuggerPDP11.OPS.CMPB, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 12SSDD
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0xB000: [DebuggerPDP11.OPS.BITB, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 13SSDD
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0xC000: [DebuggerPDP11.OPS.BICB, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 14SSDD
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0xD000: [DebuggerPDP11.OPS.BISB, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST], // 15SSDD
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0xE000: [DebuggerPDP11.OPS.SUB, DebuggerPDP11.TYPE_SRC, DebuggerPDP11.TYPE_DST] // 16SSDD
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0x1000: [DebuggerPDP11.OPS.MOV, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 01SSDD
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0x2000: [DebuggerPDP11.OPS.CMP, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 02SSDD
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0x3000: [DebuggerPDP11.OPS.BIT, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 03SSDD
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0x4000: [DebuggerPDP11.OPS.BIC, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 04SSDD
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0x5000: [DebuggerPDP11.OPS.BIS, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 05SSDD
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0x6000: [DebuggerPDP11.OPS.ADD, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 06SSDD
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0x9000: [DebuggerPDP11.OPS.MOVB, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 11SSDD
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0xA000: [DebuggerPDP11.OPS.CMPB, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 12SSDD
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0xB000: [DebuggerPDP11.OPS.BITB, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 13SSDD
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0xC000: [DebuggerPDP11.OPS.BICB, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 14SSDD
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0xD000: [DebuggerPDP11.OPS.BISB, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST], // 15SSDD
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0xE000: [DebuggerPDP11.OPS.SUB, DebuggerPDP11.OP_SRC, DebuggerPDP11.OP_DST] // 16SSDD
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},
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0xFE00: {
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0x0800: [DebuggerPDP11.OPS.JSR, DebuggerPDP11.TYPE_SRCREG, DebuggerPDP11.TYPE_DST], // 004RDD
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0x7000: [DebuggerPDP11.OPS.MUL, DebuggerPDP11.TYPE_DST, DebuggerPDP11.TYPE_SRCREG], // 070RSS
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0x7200: [DebuggerPDP11.OPS.DIV, DebuggerPDP11.TYPE_DST, DebuggerPDP11.TYPE_SRCREG], // 071RSS
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0x7400: [DebuggerPDP11.OPS.ASH, DebuggerPDP11.TYPE_DST, DebuggerPDP11.TYPE_SRCREG], // 072RSS
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0x7600: [DebuggerPDP11.OPS.ASHC, DebuggerPDP11.TYPE_DST, DebuggerPDP11.TYPE_SRCREG], // 073RSS
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0x7800: [DebuggerPDP11.OPS.XOR, DebuggerPDP11.TYPE_SRCREG, DebuggerPDP11.TYPE_DST], // 074RSS
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0x7E00: [DebuggerPDP11.OPS.SOB, DebuggerPDP11.TYPE_SRCREG, DebuggerPDP11.TYPE_DSTOFF] // 077Rnn
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0x0800: [DebuggerPDP11.OPS.JSR, DebuggerPDP11.OP_SRCREG, DebuggerPDP11.OP_DST], // 004RDD
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0x7000: [DebuggerPDP11.OPS.MUL, DebuggerPDP11.OP_DST, DebuggerPDP11.OP_SRCREG], // 070RSS
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0x7200: [DebuggerPDP11.OPS.DIV, DebuggerPDP11.OP_DST, DebuggerPDP11.OP_SRCREG], // 071RSS
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0x7400: [DebuggerPDP11.OPS.ASH, DebuggerPDP11.OP_DST, DebuggerPDP11.OP_SRCREG], // 072RSS
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0x7600: [DebuggerPDP11.OPS.ASHC, DebuggerPDP11.OP_DST, DebuggerPDP11.OP_SRCREG], // 073RSS
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0x7800: [DebuggerPDP11.OPS.XOR, DebuggerPDP11.OP_SRCREG, DebuggerPDP11.OP_DST], // 074RSS
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0x7E00: [DebuggerPDP11.OPS.SOB, DebuggerPDP11.OP_SRCREG, DebuggerPDP11.OP_DSTOFF] // 077Rnn
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},
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0xFF00: {
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0x0100: [DebuggerPDP11.OPS.BR, DebuggerPDP11.TYPE_BRANCH],
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0x0200: [DebuggerPDP11.OPS.BNE, DebuggerPDP11.TYPE_BRANCH],
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0x0300: [DebuggerPDP11.OPS.BEQ, DebuggerPDP11.TYPE_BRANCH],
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0x0400: [DebuggerPDP11.OPS.BGE, DebuggerPDP11.TYPE_BRANCH],
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0x0500: [DebuggerPDP11.OPS.BLT, DebuggerPDP11.TYPE_BRANCH],
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0x0600: [DebuggerPDP11.OPS.BGT, DebuggerPDP11.TYPE_BRANCH],
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0x0700: [DebuggerPDP11.OPS.BLE, DebuggerPDP11.TYPE_BRANCH],
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0x8000: [DebuggerPDP11.OPS.BPL, DebuggerPDP11.TYPE_BRANCH],
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0x8100: [DebuggerPDP11.OPS.BMI, DebuggerPDP11.TYPE_BRANCH],
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0x8200: [DebuggerPDP11.OPS.BHI, DebuggerPDP11.TYPE_BRANCH],
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0x8300: [DebuggerPDP11.OPS.BLOS, DebuggerPDP11.TYPE_BRANCH],
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0x8400: [DebuggerPDP11.OPS.BVC, DebuggerPDP11.TYPE_BRANCH],
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0x8500: [DebuggerPDP11.OPS.BVS, DebuggerPDP11.TYPE_BRANCH],
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0x8600: [DebuggerPDP11.OPS.BCC, DebuggerPDP11.TYPE_BRANCH],
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0x8700: [DebuggerPDP11.OPS.BCS, DebuggerPDP11.TYPE_BRANCH],
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0x0100: [DebuggerPDP11.OPS.BR, DebuggerPDP11.OP_BRANCH],
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0x0200: [DebuggerPDP11.OPS.BNE, DebuggerPDP11.OP_BRANCH],
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0x0300: [DebuggerPDP11.OPS.BEQ, DebuggerPDP11.OP_BRANCH],
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0x0400: [DebuggerPDP11.OPS.BGE, DebuggerPDP11.OP_BRANCH],
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0x0500: [DebuggerPDP11.OPS.BLT, DebuggerPDP11.OP_BRANCH],
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0x0600: [DebuggerPDP11.OPS.BGT, DebuggerPDP11.OP_BRANCH],
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0x0700: [DebuggerPDP11.OPS.BLE, DebuggerPDP11.OP_BRANCH],
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0x8000: [DebuggerPDP11.OPS.BPL, DebuggerPDP11.OP_BRANCH],
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0x8100: [DebuggerPDP11.OPS.BMI, DebuggerPDP11.OP_BRANCH],
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0x8200: [DebuggerPDP11.OPS.BHI, DebuggerPDP11.OP_BRANCH],
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0x8300: [DebuggerPDP11.OPS.BLOS, DebuggerPDP11.OP_BRANCH],
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0x8400: [DebuggerPDP11.OPS.BVC, DebuggerPDP11.OP_BRANCH],
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0x8500: [DebuggerPDP11.OPS.BVS, DebuggerPDP11.OP_BRANCH],
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0x8600: [DebuggerPDP11.OPS.BCC, DebuggerPDP11.OP_BRANCH],
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0x8700: [DebuggerPDP11.OPS.BCS, DebuggerPDP11.OP_BRANCH],
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0x8800: [DebuggerPDP11.OPS.EMT], // 104000..104377
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0x8900: [DebuggerPDP11.OPS.TRAP] // 104400..104777
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},
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0xFFC0: {
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0x0040: [DebuggerPDP11.OPS.JMP, DebuggerPDP11.TYPE_DST], // 0001DD
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0x00C0: [DebuggerPDP11.OPS.SWAB, DebuggerPDP11.TYPE_DST], // 0003DD
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0x0A00: [DebuggerPDP11.OPS.CLR, DebuggerPDP11.TYPE_DST], // 0050DD
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0x0A40: [DebuggerPDP11.OPS.COM, DebuggerPDP11.TYPE_DST], // 0051DD
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0x0A80: [DebuggerPDP11.OPS.INC, DebuggerPDP11.TYPE_DST], // 0052DD
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0x0AC0: [DebuggerPDP11.OPS.DEC, DebuggerPDP11.TYPE_DST], // 0053DD
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0x0B00: [DebuggerPDP11.OPS.NEG, DebuggerPDP11.TYPE_DST], // 0054DD
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0x0B40: [DebuggerPDP11.OPS.ADC, DebuggerPDP11.TYPE_DST], // 0055DD
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0x0B80: [DebuggerPDP11.OPS.SBC, DebuggerPDP11.TYPE_DST], // 0056DD
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0x0BC0: [DebuggerPDP11.OPS.TST, DebuggerPDP11.TYPE_DST], // 0057DD
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0x0C00: [DebuggerPDP11.OPS.ROR, DebuggerPDP11.TYPE_DST], // 0060DD
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0x0C40: [DebuggerPDP11.OPS.ROL, DebuggerPDP11.TYPE_DST], // 0061DD
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0x0C80: [DebuggerPDP11.OPS.ASR, DebuggerPDP11.TYPE_DST], // 0062DD
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0x0CC0: [DebuggerPDP11.OPS.ASL, DebuggerPDP11.TYPE_DST], // 0063DD
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0x0D00: [DebuggerPDP11.OPS.MARK, DebuggerPDP11.TYPE_DSTNUM6], // 0064nn
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0x0D40: [DebuggerPDP11.OPS.MFPI, DebuggerPDP11.TYPE_DST], // 0065SS
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0x0D80: [DebuggerPDP11.OPS.MTPI, DebuggerPDP11.TYPE_DST], // 0066DD
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0x0DC0: [DebuggerPDP11.OPS.SXT, DebuggerPDP11.TYPE_DST], // 0067DD
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0x8A00: [DebuggerPDP11.OPS.CLRB, DebuggerPDP11.TYPE_DST], // 1050DD
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0x8A40: [DebuggerPDP11.OPS.COMB, DebuggerPDP11.TYPE_DST], // 1051DD
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0x8A80: [DebuggerPDP11.OPS.INCB, DebuggerPDP11.TYPE_DST], // 1052DD
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0x8AC0: [DebuggerPDP11.OPS.DECB, DebuggerPDP11.TYPE_DST], // 1053DD
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0x8B00: [DebuggerPDP11.OPS.NEGB, DebuggerPDP11.TYPE_DST], // 1054DD
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0x8B40: [DebuggerPDP11.OPS.ADCB, DebuggerPDP11.TYPE_DST], // 1055DD
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0x8B80: [DebuggerPDP11.OPS.SBCB, DebuggerPDP11.TYPE_DST], // 1056DD
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0x8BC0: [DebuggerPDP11.OPS.TSTB, DebuggerPDP11.TYPE_DST], // 1057DD
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0x8C00: [DebuggerPDP11.OPS.RORB, DebuggerPDP11.TYPE_DST], // 1060DD
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0x8C40: [DebuggerPDP11.OPS.ROLB, DebuggerPDP11.TYPE_DST], // 1061DD
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0x8C80: [DebuggerPDP11.OPS.ASRB, DebuggerPDP11.TYPE_DST], // 1062DD
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0x8CC0: [DebuggerPDP11.OPS.ASLB, DebuggerPDP11.TYPE_DST], // 1063DD
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0x8D00: [DebuggerPDP11.OPS.MTPS, DebuggerPDP11.TYPE_DST], // 1064SS (only on LSI-11)
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0x8D40: [DebuggerPDP11.OPS.MFPD, DebuggerPDP11.TYPE_DST], // 1065DD (same as MFPI if no separate instruction/data spaces)
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0x8D80: [DebuggerPDP11.OPS.MTPD, DebuggerPDP11.TYPE_DST], // 1066DD (same as MTPI if no separate instruction/data spaces)
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0x8DC0: [DebuggerPDP11.OPS.MFPS, DebuggerPDP11.TYPE_DST] // 1067SS (only on LSI-11)
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0x0040: [DebuggerPDP11.OPS.JMP, DebuggerPDP11.OP_DST], // 0001DD
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0x00C0: [DebuggerPDP11.OPS.SWAB, DebuggerPDP11.OP_DST], // 0003DD
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0x0A00: [DebuggerPDP11.OPS.CLR, DebuggerPDP11.OP_DST], // 0050DD
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0x0A40: [DebuggerPDP11.OPS.COM, DebuggerPDP11.OP_DST], // 0051DD
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0x0A80: [DebuggerPDP11.OPS.INC, DebuggerPDP11.OP_DST], // 0052DD
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0x0AC0: [DebuggerPDP11.OPS.DEC, DebuggerPDP11.OP_DST], // 0053DD
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0x0B00: [DebuggerPDP11.OPS.NEG, DebuggerPDP11.OP_DST], // 0054DD
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0x0B40: [DebuggerPDP11.OPS.ADC, DebuggerPDP11.OP_DST], // 0055DD
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0x0B80: [DebuggerPDP11.OPS.SBC, DebuggerPDP11.OP_DST], // 0056DD
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0x0BC0: [DebuggerPDP11.OPS.TST, DebuggerPDP11.OP_DST], // 0057DD
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0x0C00: [DebuggerPDP11.OPS.ROR, DebuggerPDP11.OP_DST], // 0060DD
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0x0C40: [DebuggerPDP11.OPS.ROL, DebuggerPDP11.OP_DST], // 0061DD
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0x0C80: [DebuggerPDP11.OPS.ASR, DebuggerPDP11.OP_DST], // 0062DD
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0x0CC0: [DebuggerPDP11.OPS.ASL, DebuggerPDP11.OP_DST], // 0063DD
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0x0D00: [DebuggerPDP11.OPS.MARK, DebuggerPDP11.OP_DSTNUM6], // 0064nn
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0x0D40: [DebuggerPDP11.OPS.MFPI, DebuggerPDP11.OP_DST], // 0065SS
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0x0D80: [DebuggerPDP11.OPS.MTPI, DebuggerPDP11.OP_DST], // 0066DD
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0x0DC0: [DebuggerPDP11.OPS.SXT, DebuggerPDP11.OP_DST], // 0067DD
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0x8A00: [DebuggerPDP11.OPS.CLRB, DebuggerPDP11.OP_DST], // 1050DD
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0x8A40: [DebuggerPDP11.OPS.COMB, DebuggerPDP11.OP_DST], // 1051DD
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0x8A80: [DebuggerPDP11.OPS.INCB, DebuggerPDP11.OP_DST], // 1052DD
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0x8AC0: [DebuggerPDP11.OPS.DECB, DebuggerPDP11.OP_DST], // 1053DD
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0x8B00: [DebuggerPDP11.OPS.NEGB, DebuggerPDP11.OP_DST], // 1054DD
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0x8B40: [DebuggerPDP11.OPS.ADCB, DebuggerPDP11.OP_DST], // 1055DD
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0x8B80: [DebuggerPDP11.OPS.SBCB, DebuggerPDP11.OP_DST], // 1056DD
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0x8BC0: [DebuggerPDP11.OPS.TSTB, DebuggerPDP11.OP_DST], // 1057DD
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0x8C00: [DebuggerPDP11.OPS.RORB, DebuggerPDP11.OP_DST], // 1060DD
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0x8C40: [DebuggerPDP11.OPS.ROLB, DebuggerPDP11.OP_DST], // 1061DD
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0x8C80: [DebuggerPDP11.OPS.ASRB, DebuggerPDP11.OP_DST], // 1062DD
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0x8CC0: [DebuggerPDP11.OPS.ASLB, DebuggerPDP11.OP_DST], // 1063DD
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0x8D00: [DebuggerPDP11.OPS.MTPS, DebuggerPDP11.OP_DST], // 1064SS (only on LSI-11)
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0x8D40: [DebuggerPDP11.OPS.MFPD, DebuggerPDP11.OP_DST], // 1065DD (same as MFPI if no separate instruction/data spaces)
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0x8D80: [DebuggerPDP11.OPS.MTPD, DebuggerPDP11.OP_DST], // 1066DD (same as MTPI if no separate instruction/data spaces)
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0x8DC0: [DebuggerPDP11.OPS.MFPS, DebuggerPDP11.OP_DST] // 1067SS (only on LSI-11)
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},
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0xFFF8: {
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0x0080: [DebuggerPDP11.OPS.RTS, DebuggerPDP11.TYPE_DSTREG], // 00020R
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0x0098: [DebuggerPDP11.OPS.SPL, DebuggerPDP11.TYPE_DSTNUM3] // 00023N
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0x0080: [DebuggerPDP11.OPS.RTS, DebuggerPDP11.OP_DSTREG], // 00020R
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0x0098: [DebuggerPDP11.OPS.SPL, DebuggerPDP11.OP_DSTNUM3] // 00023N
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},
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0xFFFF: {
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0x0000: [DebuggerPDP11.OPS.HALT], // 000000
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@ -443,7 +442,7 @@ if (DEBUGGER) {
|
|||
var sMessages = cmp.getMachineParm('messages');
|
||||
if (sMessages) this.messageInit(sMessages);
|
||||
|
||||
this.opMasks = DebuggerPDP11.opMasks;
|
||||
this.opTable = DebuggerPDP11.opTable;
|
||||
|
||||
this.messageDump(MessagesPDP11.BUS, function onDumpBus(asArgs) { dbg.dumpBus(asArgs); });
|
||||
|
||||
|
|
@ -1594,9 +1593,8 @@ if (DEBUGGER) {
|
|||
}
|
||||
this.aBreakWrite = ["bw"];
|
||||
/*
|
||||
* nSuppressBreaks ensures we can't get into an infinite loop where a breakpoint lookup requires
|
||||
* reading a segment descriptor via getSegment(), and that triggers more memory reads, which triggers
|
||||
* more breakpoint checks.
|
||||
* nSuppressBreaks ensures we can't get into an infinite loop where a breakpoint lookup
|
||||
* requires reading memory that triggers more memory reads, which triggers more breakpoint checks.
|
||||
*/
|
||||
this.nSuppressBreaks = 0;
|
||||
};
|
||||
|
|
@ -1892,10 +1890,9 @@ if (DEBUGGER) {
|
|||
var opCode = this.getWord(dbgAddr, true);
|
||||
|
||||
var opDesc;
|
||||
for (var mask in this.opMasks) {
|
||||
var opMask = this.opMasks[mask];
|
||||
var bits = opCode & mask;
|
||||
opDesc = opMask[bits];
|
||||
for (var mask in this.opTable) {
|
||||
var opMasks = this.opTable[mask];
|
||||
opDesc = opMasks[opCode & mask];
|
||||
if (opDesc) break;
|
||||
}
|
||||
|
||||
|
|
@ -1907,10 +1904,10 @@ if (DEBUGGER) {
|
|||
|
||||
for (var iOperand = 1; iOperand <= cOperands; iOperand++) {
|
||||
|
||||
var type = opDesc[iOperand];
|
||||
if (type === undefined) continue;
|
||||
var opType = opDesc[iOperand];
|
||||
if (opType === undefined) continue;
|
||||
|
||||
var sOperand = this.getOperand(opCode, type, dbgAddr);
|
||||
var sOperand = this.getOperand(opCode, opType, dbgAddr);
|
||||
|
||||
if (!sOperand || !sOperand.length) {
|
||||
sOperands = "INVALID";
|
||||
|
|
@ -1956,63 +1953,63 @@ if (DEBUGGER) {
|
|||
};
|
||||
|
||||
/**
|
||||
* getOperand(opCode, type, dbgAddr)
|
||||
* getOperand(opCode, opType, dbgAddr)
|
||||
*
|
||||
* If getOperand() returns an Array rather than a string, then the first element is the original
|
||||
* operand, and the second element is a comment containing an alternate representation of the operand.
|
||||
*
|
||||
* @this {DebuggerPDP11}
|
||||
* @param {number} opCode
|
||||
* @param {number} type
|
||||
* @param {number} opType
|
||||
* @param {DbgAddrPDP11} dbgAddr
|
||||
* @return {string|Array.<string>}
|
||||
*/
|
||||
DebuggerPDP11.prototype.getOperand = function(opCode, type, dbgAddr)
|
||||
DebuggerPDP11.prototype.getOperand = function(opCode, opType, dbgAddr)
|
||||
{
|
||||
var sOperand = "", disp, addr;
|
||||
/*
|
||||
* Take care of TYPE_OTHER opcodes first; then all we'll have to worry about
|
||||
* next are TYPE_SRC or TYPE_DST opcodes.
|
||||
* Take care of OP_OTHER opcodes first; then all we'll have to worry about
|
||||
* next are OP_SRC or OP_DST opcodes.
|
||||
*/
|
||||
var typeOther = type & DebuggerPDP11.TYPE_OTHER;
|
||||
if (typeOther == DebuggerPDP11.TYPE_BRANCH) {
|
||||
var opTypeOther = opType & DebuggerPDP11.OP_OTHER;
|
||||
if (opTypeOther == DebuggerPDP11.OP_BRANCH) {
|
||||
disp = ((opCode & 0xff) << 24) >> 23;
|
||||
addr = (dbgAddr.addr + disp) & 0xffff;
|
||||
sOperand = this.toStrBase(addr);
|
||||
}
|
||||
else if (typeOther == DebuggerPDP11.TYPE_DSTOFF) {
|
||||
else if (opTypeOther == DebuggerPDP11.OP_DSTOFF) {
|
||||
disp = (opCode & 0x3f) << 1;
|
||||
addr = (dbgAddr.addr - disp) & 0xffff;
|
||||
sOperand = this.toStrBase(addr);
|
||||
}
|
||||
else if (typeOther == DebuggerPDP11.TYPE_DSTNUM3) {
|
||||
else if (opTypeOther == DebuggerPDP11.OP_DSTNUM3) {
|
||||
disp = (opCode & 0x7);
|
||||
sOperand = this.toStrBase(disp, 2);
|
||||
}
|
||||
else if (typeOther == DebuggerPDP11.TYPE_DSTNUM6) {
|
||||
else if (opTypeOther == DebuggerPDP11.OP_DSTNUM6) {
|
||||
disp = (opCode & 0x3f);
|
||||
sOperand = this.toStrBase(disp);
|
||||
}
|
||||
else {
|
||||
/*
|
||||
* Isolate all TYPE_SRC or TYPE_DST bits from opcode in the mode variable.
|
||||
* Isolate all OP_SRC or OP_DST bits from opcode in the opMode variable.
|
||||
*/
|
||||
var mode = opCode & type;
|
||||
var opMode = opCode & opType;
|
||||
/*
|
||||
* Convert TYPE_SRC bits into TYPE_DST bits, since they use the same format.
|
||||
* Convert OP_SRC bits into OP_DST bits, since they use the same format.
|
||||
*/
|
||||
if (type & DebuggerPDP11.TYPE_SRC) {
|
||||
mode >>= 6;
|
||||
type >>= 6;
|
||||
if (opType & DebuggerPDP11.OP_SRC) {
|
||||
opMode >>= 6;
|
||||
opType >>= 6;
|
||||
}
|
||||
if (type & DebuggerPDP11.TYPE_DST) {
|
||||
if (opType & DebuggerPDP11.OP_DST) {
|
||||
var wIndex;
|
||||
var reg = mode & DebuggerPDP11.TYPE_DSTREG;
|
||||
var reg = opMode & DebuggerPDP11.OP_DSTREG;
|
||||
/*
|
||||
* Note that opcodes that specify only REG bits in the type mask (ie, no MOD bits)
|
||||
* will automatically default to MODE_REG below.
|
||||
* Note that opcodes that specify only REG bits in the opType mask (ie, no MOD bits)
|
||||
* will automatically default to OPMODE_REG below.
|
||||
*/
|
||||
switch((mode & DebuggerPDP11.TYPE_DSTMODE) >> DebuggerPDP11.TYPE_DSTMODE_SHIFT) {
|
||||
switch((opMode & DebuggerPDP11.OP_DSTMODE)) {
|
||||
case PDP11.OPMODE.REG: // 0x0: REGISTER
|
||||
sOperand = this.getRegName(reg);
|
||||
break;
|
||||
|
|
|
|||
Loading…
Reference in a new issue