386 lines
8.5 KiB
C
386 lines
8.5 KiB
C
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/* ===========================================================================
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* uz80as, an assembler for the Zilog Z80 and several other microprocessors.
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*
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* MOS Technology 6502.
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* Rockwell R6501.
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* California Micro Devices G65SC02.
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* Rockwell R65C02.
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* Rockwell R65C29.
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* Western Design Center W65C02S.
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* ===========================================================================
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*/
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/* mos6502, the original
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*
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* g65sc02 California Micro Devices, adds to mos6502:
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* - zp ADC,AND,CMP,EOR,LDA,ORA,SBC,STA
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* - DEC A, INC A
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* - JMP (abs,X)
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* - BRA
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* - PHX,PHY,PLX,PLY
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* - STZ
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* - TRB
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* - TSB
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* - More addressing modes for BIT, etc
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*
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* r6501 Rockwell, adds to mos6502:
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* - BBR, BBS
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* - RMB, SMB
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*
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* r65c02 Rockwell, adds the instructions of the g65sc02 and r6501
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*
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* r65c29 Rockwell, adds to r65c02:
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* - MUL
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*
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* w65c02s Western Design Center, adds to r65c02:
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* - STP,WAI
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*/
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#include "pp.h"
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#include "err.h"
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#include "options.h"
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#include "uz80as.h"
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#include <stddef.h>
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/* pat:
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* a: expr
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* b: ORA,AND,EOR,ADC,STA,LDA,CMP,SBC
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* c: ORA,AND,EOR,ADC,LDA,CMP,SBC
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* d: PHP,CLC,PLP,SEC,PHA,CLI,PLA,SEI,
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* DEY,TYA,TAY,CLV,INY,CLD,INX,SED
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* e: ASL,ROL,LSR,ROR
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* f: DEC, INC
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* g: BPL,BMI,BVC,BVS,BCC,BCS,BNE,BEQ
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* h: TXA,TXS,TAX,TSX,DEX,NOP
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* i: CPY,CPX
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* j: TSB,TRB
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* k: BBR0,BBR1,BBR2,BBR3,BBR4,BBR5,BBR6,BBR6,
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* BBS0,BBS1,BBS2,BBS3,BBS4,BBS5,BBS6,BBS7
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* l: RMB0,RMB1,RMB2,RMB3,RMB4,RMB5,EMB6,RMB7,
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* SMB0,SMB1,SMB2,SMB3,SMB4,SMB5,SMB6,SMB7
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* m: PHY,PLY
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* n: PHX,PLX
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* o: INC, DEC
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*
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* gen:
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* .: output lastbyte
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* b: (op << 3) | lastbyte
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* c: op | lastbyte
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* d: lastbyte = op as 8 bit value
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* e: output op as word (no '.' should follow)
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* f: (op << 5) | lastbyte
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* g: if op <= $FF output last byte and then op as 8 bit value;
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* else output (lastbyte | 0x08) and output op as word
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* (no '.' should follow)
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* h: (op << 4) | lastbyte
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* i: relative jump to op (-2)
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* j: if op <= $FF output $64 and op as 8 bit
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* else output $9C and op as word
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* (no '.' should follow)
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* k: if op <= $FF ouput $74 and op as 8 bit
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* else output $9E and op as word
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* (no '.' should follow)
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* l: relative jump to op (-3)
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*/
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static const struct matchtab s_matchtab_mos6502[] = {
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{ "BRK", "00.", 1, 0 },
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{ "JSR a", "20.e0", 1, 0 },
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{ "RTI", "40.", 1, 0 },
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{ "RTS", "60.", 1, 0 },
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{ "h", "8Ah0.", 1, 0 },
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{ "d", "08h0.", 1, 0 },
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{ "c #a", "09f0.d1.", 1, 0, "e8" },
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{ "b (a,X)", "01f0.d1.", 1, 0, "e8" },
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{ "b (a),Y", "11f0.d1.", 1, 0, "e8" },
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{ "b (a)", "12f0.d1.", 2, 0, "e8" },
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{ "b a", "05f0g1", 1, 0 },
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{ "b a,X", "15f0g1", 1, 0 },
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{ "b a,Y", "19f0.e1", 1, 0 },
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{ "e A", "0Af0.", 1, 0 },
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{ "e a", "06f0g1", 1, 0 },
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{ "e a,X", "16f0g1", 1, 0 },
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{ "STX a", "86g0", 1, 0 },
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{ "STX a,Y", "96.d0.", 1, 0, "e8" },
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{ "LDX #a", "A2.d0.", 1, 0, "e8" },
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{ "LDX a", "A6g0", 1, 0 },
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{ "LDX a,Y", "B6g0", 1, 0 },
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{ "o A", "1Af0.", 2, 0 },
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{ "f a", "C6f0g1", 1, 0 },
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{ "f a,X", "D6f0g1", 1, 0 },
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{ "g a", "10f0.i1.", 1, 0, "r8" },
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{ "BIT #a", "89.d0.", 2, 0, "e8" },
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{ "BIT a", "24g0", 1, 0 },
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{ "BIT a,X", "34g0", 2, 0 },
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{ "JMP (a)", "6C.e0", 1, 0 },
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{ "JMP (a,X)", "7C.e0", 2, 0 },
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{ "JMP a", "4C.e0", 1, 0 },
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{ "STY a", "84g0", 1, 0 },
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{ "STY a,X", "94.d0.", 1, 0, "e8" },
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{ "LDY #a", "A0.d0.", 1, 0, "e8" },
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{ "LDY a", "A4g0", 1, 0 },
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{ "LDY a,X", "B4g0", 1, 0 },
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{ "i #a", "C0f0.d1.", 1, 0, "e8" },
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{ "i a", "C4f0g1", 1, 0 },
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{ "j a", "04h0g1", 2, 0 },
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{ "k a,a", "0Fh0.d1.l2.", 4, 0, "e8r8" },
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{ "l a", "07h0.d1.", 4, 0, "e8" },
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{ "m", "5Af0.", 2, 0 },
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{ "n", "DAf0.", 2, 0 },
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{ "BRA a", "80.i0.", 2, 0, "r8" },
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{ "STZ a,X", "k1", 2, 0 },
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{ "STZ a", "j1", 2, 0 },
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{ "MUL", "02.", 8, 0 },
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{ "WAI", "CB.", 16, 0 },
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{ "STP", "DB.", 16, 0 },
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{ NULL, NULL },
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};
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static const char *const bval[] = {
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"ORA", "AND", "EOR", "ADC",
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"STA", "LDA", "CMP", "SBC",
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NULL
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};
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static const char *const cval[] = {
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"ORA", "AND", "EOR", "ADC",
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"", "LDA", "CMP", "SBC", NULL
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};
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static const char *const dval[] = {
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"PHP", "CLC", "PLP", "SEC",
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"PHA", "CLI", "PLA", "SEI",
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"DEY", "TYA", "TAY", "CLV",
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"INY", "CLD", "INX", "SED",
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NULL
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};
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static const char *const eval[] = {
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"ASL", "ROL", "LSR", "ROR",
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NULL
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};
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static const char *const fval[] = {
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"DEC", "INC",
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NULL
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};
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static const char *const gval[] = {
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"BPL", "BMI", "BVC", "BVS",
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"BCC", "BCS", "BNE", "BEQ",
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NULL
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};
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static const char *const hval[] = {
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"TXA", "TXS", "TAX", "TSX",
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"DEX", "", "NOP",
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NULL
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};
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static const char *const ival[] = {
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"CPY", "CPX",
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NULL
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};
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static const char *const jval[] = {
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"TSB", "TRB",
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NULL
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};
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static const char *const kval[] = {
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"BBR0", "BBR1", "BBR2", "BBR3",
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"BBR4", "BBR5", "BBR6", "BBR7",
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"BBS0", "BBS1", "BBS2", "BBS3",
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"BBS4", "BBS5", "BBS6", "BBS7",
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NULL
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};
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static const char *const lval[] = {
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"RMB0", "RMB1", "RMB2", "RMB3",
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"RMB4", "RMB5", "RMB6", "RMB7",
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"SMB0", "SMB1", "SMB2", "SMB3",
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"SMB4", "SMB5", "SMB6", "SMB7",
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NULL
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};
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static const char *const mval[] = {
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"PHY", "PLY",
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NULL
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};
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static const char *const nval[] = {
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"PHX", "PLX",
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NULL
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};
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static const char *const oval[] = {
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"INC", "DEC",
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NULL
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};
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static const char *const *const valtab[] = {
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bval, cval, dval, eval, fval,
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gval, hval, ival, jval, kval,
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lval, mval, nval, oval
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};
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static int match_mos6502(char c, const char *p, const char **q)
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{
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int v;
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if (c <= 'o') {
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v = mreg(p, valtab[(int) (c - 'b')], q);
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} else {
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v = -1;
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}
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return v;
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}
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static int gen_mos6502(int *eb, char p, const int *vs, int i, int savepc)
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{
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int b, w;
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b = *eb;
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switch (p) {
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case 'f': b |= (vs[i] << 5); break;
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case 'g': w = vs[i] & 0xffff;
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if (w <= 0xff) {
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genb(b, s_pline_ep);
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b = 0;
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genb(w, s_pline_ep);
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} else {
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b |= 0x08;
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genb(b, s_pline_ep);
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b = 0;
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genb(w, s_pline_ep);
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genb(w >> 8, s_pline_ep);
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}
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break;
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case 'h': b |= (vs[i] << 4); break;
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case 'i': b = (vs[i] - savepc - 2); break;
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case 'j': w = vs[i] & 0xffff;
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if (w <= 0xff) {
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genb(0x64, s_pline_ep);
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b = 0;
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genb(w, s_pline_ep);
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} else {
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genb(0x9C, s_pline_ep);
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b = 0;
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genb(w, s_pline_ep);
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genb(w >> 8, s_pline_ep);
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}
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break;
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case 'k': w = vs[i] & 0xffff;
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if (w <= 0xff) {
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genb(0x74, s_pline_ep);
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b = 0;
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genb(w, s_pline_ep);
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} else {
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genb(0x9E, s_pline_ep);
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b = 0;
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genb(w, s_pline_ep);
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genb(w >> 8, s_pline_ep);
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}
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break;
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case 'l': b = (vs[i] - savepc - 3); break;
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default:
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return -1;
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}
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*eb = b;
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return 0;
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}
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static int s_pat_char = 'b';
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static int s_pat_index;
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static void pat_char_rewind_mos6502(int c)
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{
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s_pat_char = c;
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s_pat_index = 0;
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};
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static const char *pat_next_str_mos6502(void)
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{
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const char *s;
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if (s_pat_char >= 'b' && s_pat_char <= 'o') {
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s = valtab[(int) (s_pat_char - 'b')][s_pat_index];
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if (s != NULL) {
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s_pat_index++;
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}
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} else {
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s = NULL;
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}
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return s;
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};
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const struct target s_target_mos6502 = {
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.id = "mos6502",
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.descr = "MOS Technology 6502",
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.matcht = s_matchtab_mos6502,
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.matchf = match_mos6502,
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.genf = gen_mos6502,
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.pat_char_rewind = pat_char_rewind_mos6502,
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.pat_next_str = pat_next_str_mos6502,
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.mask = 1
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};
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const struct target s_target_r6501 = {
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.id = "r6501",
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.descr = "Rockwell R6501",
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.matcht = s_matchtab_mos6502,
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.matchf = match_mos6502,
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.genf = gen_mos6502,
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.pat_char_rewind = pat_char_rewind_mos6502,
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.pat_next_str = pat_next_str_mos6502,
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.mask = 5
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};
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const struct target s_target_g65sc02 = {
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.id = "g65sc02",
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.descr = "California Micro Devices G65SC02",
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.matcht = s_matchtab_mos6502,
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.matchf = match_mos6502,
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.genf = gen_mos6502,
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.pat_char_rewind = pat_char_rewind_mos6502,
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.pat_next_str = pat_next_str_mos6502,
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.mask = 3
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|
|
};
|
||
|
|
|
||
|
|
const struct target s_target_r65c02 = {
|
||
|
|
.id = "r65c02",
|
||
|
|
.descr = "Rockwell R65C02",
|
||
|
|
.matcht = s_matchtab_mos6502,
|
||
|
|
.matchf = match_mos6502,
|
||
|
|
.genf = gen_mos6502,
|
||
|
|
.pat_char_rewind = pat_char_rewind_mos6502,
|
||
|
|
.pat_next_str = pat_next_str_mos6502,
|
||
|
|
.mask = 7
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct target s_target_r65c29 = {
|
||
|
|
.id = "r65c29",
|
||
|
|
.descr = "Rockwell R65C29, R65C00/21",
|
||
|
|
.matcht = s_matchtab_mos6502,
|
||
|
|
.matchf = match_mos6502,
|
||
|
|
.genf = gen_mos6502,
|
||
|
|
.pat_char_rewind = pat_char_rewind_mos6502,
|
||
|
|
.pat_next_str = pat_next_str_mos6502,
|
||
|
|
.mask = 15
|
||
|
|
};
|
||
|
|
|
||
|
|
const struct target s_target_w65c02s = {
|
||
|
|
.id = "w65c02s",
|
||
|
|
.descr = "Western Design Center W65C02S",
|
||
|
|
.matcht = s_matchtab_mos6502,
|
||
|
|
.matchf = match_mos6502,
|
||
|
|
.genf = gen_mos6502,
|
||
|
|
.pat_char_rewind = pat_char_rewind_mos6502,
|
||
|
|
.pat_next_str = pat_next_str_mos6502,
|
||
|
|
.mask = 027
|
||
|
|
};
|