diff options
Diffstat (limited to 'src/emu/cpu/tms32025/32025dsm.c')
-rw-r--r-- | src/emu/cpu/tms32025/32025dsm.c | 522 |
1 files changed, 522 insertions, 0 deletions
diff --git a/src/emu/cpu/tms32025/32025dsm.c b/src/emu/cpu/tms32025/32025dsm.c new file mode 100644 index 00000000000..ab6f524b42c --- /dev/null +++ b/src/emu/cpu/tms32025/32025dsm.c @@ -0,0 +1,522 @@ + /**************************************************************************\ + * Texas Instruments TMS320x25 DSP Disassembler * + * * + * Copyright (C) 2001-2002+ Tony La Porta * + * To be used with TMS320x25 DSP Emulator engine. * + * Written for the MAME project. * + * * + * Many thanks to those involved in the i8039 Disassembler * + * as the structure here was borrowed from it. * + * * + * Note : This is a word based microcontroller, with addressing * + * architecture based on the Harvard addressing scheme. * + * * + * * + * A Memory Address * + * B Opcode Address Argument (Requires next opcode read) * + * C Compare mode * + * D Immediate byte load * + * K Immediate bit load * + * W Immediate word load * + * M AR[x] register modification type (for indirect addressing) * + * N ARP register to change ARP pointer to (for indirect addressing) * + * P I/O port address number * + * R AR[R] register to use * + * S Shift ALU left * + * T Shift ALU left (Hex) / Nibble data * + * X Don't care bit * + * * + \**************************************************************************/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> + +#ifdef MAME_DEBUG /* Compile interface to MAME */ +#include "tms32025.h" +#include "debugger.h" +extern UINT16 *tms32025_pgmmap[0x200]; +//#define READOP16(A) (cpu_readop16((A) | (TMS32025_PGM_OFFSET << 1))) +//#define READARG16(A) (cpu_readop_arg16((A) | (TMS32025_PGM_OFFSET << 1))) +#define READOP16(A) ((tms32025_pgmmap[(A) >> 7]) ? (tms32025_pgmmap[(A) >> 7][(A) & 0x7f]) : cpu_readop16((A)<<1)) +#define READARG16(A) ((tms32025_pgmmap[(A) >> 7]) ? (tms32025_pgmmap[(A) >> 7][(A) & 0x7f]) : cpu_readop16((A)<<1)) +#else /* Compile interface for standalone */ +extern unsigned char *Buffer; +#ifdef MSB_FIRST +#define READOP16(A) ( ((Buffer[A+1]<<8) | Buffer[A]) ) +#define READARG16(A) ( ((Buffer[A+1]<<8) | Buffer[A]) ) +#else +#define READOP16(A) ( ((Buffer[A]<<8) | Buffer[A+1]) ) +#define READARG16(A) ( ((Buffer[A]<<8) | Buffer[A+1]) ) +#endif +#endif + + + +typedef unsigned char byte; +typedef unsigned short int word; + +#define FMT(a,b) a, b +#define PTRS_PER_FORMAT 2 + +static const char *arith[8] = { "*", "*-", "*+", "??", "BR0-", "*0-", "*0+", "*BR0+" } ; +static const char *nextar[16] = { "", "", "", "", "", "", "", "", ",AR0", ",AR1", ",AR2", ",AR3", ",AR4", ",AR5", ",AR6", ",AR7" } ; +static const char *cmpmode[4] = { "0 (ARx = AR0)" , "1 (ARx < AR0)" , "2 (ARx > AR0)" , "3 (ARx <> AR0)" } ; + + +static const char *TMS32025Formats[] = { + FMT("0000tttt0aaaaaaa", "add %A,%T"), /* 0xxx */ + FMT("0000tttt1mmmnnnn", "add %M,%T%N"), + FMT("0001tttt0aaaaaaa", "sub %A,%T"), /* 1xxx */ + FMT("0001tttt1mmmnnnn", "sub %M,%T%N"), + FMT("0010tttt0aaaaaaa", "lac %A,%T"), /* 2xxx */ + FMT("0010tttt1mmmnnnn", "lac %M,%T%N"), + FMT("00110rrr0aaaaaaa", "lar %R,%A"), /* 3xxx */ + FMT("00110rrr1mmmnnnn", "lar %R%M%N"), + FMT("001110000aaaaaaa", "mpy %A"), /* 38xx */ + FMT("001110001mmmnnnn", "mpy %M%N"), + FMT("001110010aaaaaaa", "sqra %A"), /* 39xx */ + FMT("001110011mmmnnnn", "sqra %M%N"), + FMT("001110100aaaaaaa", "mpya %A"), /* 3Axx */ + FMT("001110101mmmnnnn", "mpya %M%N"), + FMT("001110110aaaaaaa", "mpys %A"), /* 3Bxx */ + FMT("001110111mmmnnnn", "mpys %M%N"), + FMT("001111000aaaaaaa", "lt %A"), /* 3Cxx */ + FMT("001111001mmmnnnn", "lt %M%N"), + FMT("001111010aaaaaaa", "lta %A"), /* 3Dxx */ + FMT("001111011mmmnnnn", "lta %M%N"), + FMT("001111100aaaaaaa", "ltp %A"), /* 3Exx */ + FMT("001111101mmmnnnn", "ltp %M%N"), + FMT("001111110aaaaaaa", "ltd %A"), /* 3Fxx */ + FMT("001111111mmmnnnn", "ltd %M%N"), + FMT("010000000aaaaaaa", "zalh %A"), /* 40xx */ + FMT("010000001mmmnnnn", "zalh %M%N"), + FMT("010000010aaaaaaa", "zals %A"), /* 41xx */ + FMT("010000011mmmnnnn", "zals %M%N"), + FMT("010000100aaaaaaa", "lact %A"), /* 42xx */ + FMT("010000101mmmnnnn", "lact %M%N"), + FMT("010000110aaaaaaa", "addc %A%S"), /* 43xx */ + FMT("010000111mmmnnnn", "addc %M%S%N"), + FMT("010001000aaaaaaa", "subh %A"), /* 44xx */ + FMT("010001001mmmnnnn", "subh %M%N"), + FMT("010001010aaaaaaa", "subs %A"), /* 45xx */ + FMT("010001011mmmnnnn", "subs %M%N"), + FMT("010001100aaaaaaa", "subt %A"), /* 46xx */ + FMT("010001101mmmnnnn", "subt %M%N"), + FMT("010001110aaaaaaa", "subc %A"), /* 47xx */ + FMT("010001111mmmnnnn", "subc %M%N"), + FMT("010010000aaaaaaa", "addh %A"), /* 48xx */ + FMT("010010001mmmnnnn", "addh %M%N"), + FMT("010010010aaaaaaa", "adds %A"), /* 49xx */ + FMT("010010011mmmnnnn", "adds %M%N"), + FMT("010010100aaaaaaa", "addt %A"), /* 4Axx */ + FMT("010010101mmmnnnn", "addt %M%N"), + FMT("010010110aaaaaaa", "rpt %A"), /* 4Bxx */ + FMT("010010111mmmnnnn", "rpt %M%N"), + FMT("010011000aaaaaaa", "xor %A"), /* 4Cxx */ + FMT("010011001mmmnnnn", "xor %M%N"), + FMT("010011010aaaaaaa", "or %A"), /* 4Dxx */ + FMT("010011011mmmnnnn", "or %M%N"), + FMT("010011100aaaaaaa", "and %A"), /* 4Exx */ + FMT("010011101mmmnnnn", "and %M%N"), + FMT("010011110aaaaaaa", "subb %A"), /* 4Fxx */ + FMT("010011111mmmnnnn", "subb %M%N"), + FMT("010100000aaaaaaa", "lst %A"), /* 50xx */ + FMT("010100001mmmnnnn", "lst %M%N"), + FMT("010100010aaaaaaa", "lst1 %A"), /* 51xx */ + FMT("010100011mmmnnnn", "lst1 %M%N"), + FMT("010100100aaaaaaa", "ldp %A"), /* 52xx */ + FMT("010100101mmmnnnn", "ldp %M%N"), + FMT("010100110aaaaaaa", "lph %A"), /* 53xx */ + FMT("010100111mmmnnnn", "lph %M%N"), + FMT("010101000aaaaaaa", "pshd %A"), /* 54xx */ + FMT("010101001mmmnnnn", "pshd %M%N"), + +/* FMT("010101010aaaaaaa", "mar %A"), 55xx */ +/* MAR direct has been expanded out to all its variations because one of its */ +/* its opcodes is the same as NOP. Actually MAR direct just performs a NOP */ + FMT("0101010100000000", "nop"), /* 5500 */ + FMT("0101010100000001", "mar $01"), + FMT("0101010100000010", "mar $02"), + FMT("0101010100000011", "mar $03"), + FMT("0101010100000100", "mar $04"), + FMT("0101010100000101", "mar $05"), + FMT("0101010100000110", "mar $06"), + FMT("0101010100000111", "mar $07"), + FMT("0101010100001000", "mar $08"), + FMT("0101010100001001", "mar $09"), + FMT("0101010100001010", "mar $0A"), + FMT("0101010100001011", "mar $0B"), + FMT("0101010100001100", "mar $0C"), + FMT("0101010100001101", "mar $0D"), + FMT("0101010100001110", "mar $0E"), + FMT("0101010100001111", "mar $0F"), + FMT("010101010001tttt", "mar $1%T"), + FMT("010101010010tttt", "mar $2%T"), + FMT("010101010011tttt", "mar $3%T"), + FMT("010101010100tttt", "mar $4%T"), + FMT("010101010101tttt", "mar $5%T"), + FMT("010101010110tttt", "mar $6%T"), + FMT("010101010111tttt", "mar $7%T"), + +/* FMT("010101011mmmnnnn", "mar %M%N"), 55xx */ +/* MAR indirect has been expanded out to all its variations because one of */ +/* its opcodes, is the same as LARP (actually performs the same function) */ + FMT("0101010110000xxx", "mar *"), /* 558x */ + FMT("0101010110001kkk", "larp %K"), /* 558x */ + FMT("010101011001nnnn", "mar *-%N"), /* 558x */ + FMT("010101011010nnnn", "mar *+%N"), + FMT("010101011011nnnn", "mar ??%N"), + FMT("010101011100nnnn", "mar *BR0-%N"), + FMT("010101011101nnnn", "mar *0-%N"), + FMT("010101011110nnnn", "mar *0+%N"), + FMT("010101011111nnnn", "mar *BR0+%N"), + + FMT("010101100aaaaaaa", "dmov %A"), /* 56xx */ + FMT("010101101mmmnnnn", "dmov %M%N"), + FMT("010101110aaaaaaa", "bitt %A"), /* 57xx */ + FMT("010101111mmmnnnn", "bitt %M%N"), + FMT("010110000aaaaaaa", "tblr %A"), /* 58xx */ + FMT("010110001mmmnnnn", "tblr %M%N"), + FMT("010110010aaaaaaa", "tblw %A"), /* 59xx */ + FMT("010110011mmmnnnn", "tblw %M%N"), + FMT("010110100aaaaaaa", "sqrs %A"), /* 5Axx */ + FMT("010110101mmmnnnn", "sqrs %M%N"), + FMT("010110110aaaaaaa", "lts %A"), /* 5Bxx */ + FMT("010110111mmmnnnn", "lts %M%N"), + FMT("010111000aaaaaaabbbbbbbbbbbbbbbb", "macd %B,%A"), /* 5Cxx */ + FMT("010111001mmmnnnnbbbbbbbbbbbbbbbb", "macd %B,%M%N"), + FMT("010111010aaaaaaabbbbbbbbbbbbbbbb", "mac %B,%A"), /* 5Dxx */ + FMT("010111011mmmnnnnbbbbbbbbbbbbbbbb", "mac %B,%M%N"), + FMT("010111101mmmnnnnbbbbbbbbbbbbbbbb", "bc %B %M%N"), /* 5Exx */ + FMT("010111111mmmnnnnbbbbbbbbbbbbbbbb", "bnc %B %M%N"), /* 5Fxx */ + FMT("01100sss0aaaaaaa", "sacl %A%S"), /* 6xxx */ + FMT("01100sss1mmmnnnn", "sacl %M%S%N"), + FMT("01101sss0aaaaaaa", "sach %A%S"), /* 6Xxx */ + FMT("01101sss1mmmnnnn", "sach %M%S%N"), + FMT("01110rrr0aaaaaaa", "sar %R,%A"), /* 7xxx */ + FMT("01110rrr1mmmnnnn", "sar %R%M%N"), + FMT("011110000aaaaaaa", "sst %A"), /* 78xx */ + FMT("011110001mmmnnnn", "sst %M%N"), + FMT("011110010aaaaaaa", "sst1 %A"), /* 79xx */ + FMT("011110011mmmnnnn", "sst1 %M%N"), + FMT("011110100aaaaaaa", "popd %A"), /* 7Axx */ + FMT("011110101mmmnnnn", "popd %M%N"), + FMT("011110110aaaaaaa", "zalr %A"), /* 7Bxx */ + FMT("011110111mmmnnnn", "zalr %M%N"), + FMT("011111000aaaaaaa", "spl %A"), /* 7Cxx */ + FMT("011111001mmmnnnn", "spl %M%N"), + FMT("011111010aaaaaaa", "sph %A"), /* 7Dxx */ + FMT("011111011mmmnnnn", "sph %M%N"), + FMT("011111100aaaaaaa", "adrk %A"), /* 7Exx */ + FMT("011111101mmmnnnn", "adrk %M%N"), + FMT("011111110aaaaaaa", "sbrk %A"), /* 7Fxx */ + FMT("011111111mmmnnnn", "sbrk %M%N"), + FMT("1000pppp0aaaaaaa", "in %A,%P"), /* 8xxx */ + FMT("1000pppp1mmmnnnn", "in %M,%P%N"), + FMT("1001tttt0aaaaaaa", "bit %A,%T"), /* 9xxx */ + FMT("1001tttt1mmmnnnn", "bit %M,%T%N"), + FMT("101wwwwwwwwwwwww", "mpyk %W"), /* Axxx-Bxxx */ + FMT("11000rrrdddddddd", "lark %R,%D"), /* Cxxx */ + FMT("1100100kdddddddd", "ldpk %K%D"), /* Cxxx */ +/* FMT("11001010dddddddd", "lack %D"), CAxx */ +/* LACK has been expanded out to all its variations because one of its */ +/* its opcodes is the same as ZAC. Actually, it performs the same function */ + FMT("1100101000000000", "zac"), /* CA00 */ + FMT("1100101000000001", "lack 01h"), /* CAxx */ + FMT("1100101000000010", "lack 02h"), + FMT("1100101000000011", "lack 03h"), + FMT("1100101000000100", "lack 04h"), + FMT("1100101000000101", "lack 05h"), + FMT("1100101000000110", "lack 06h"), + FMT("1100101000000111", "lack 07h"), + FMT("1100101000001000", "lack 08h"), + FMT("1100101000001001", "lack 09h"), + FMT("1100101000001010", "lack 0Ah"), + FMT("1100101000001011", "lack 0Bh"), + FMT("1100101000001100", "lack 0Ch"), + FMT("1100101000001101", "lack 0Dh"), + FMT("1100101000001110", "lack 0Eh"), + FMT("1100101000001111", "lack 0Fh"), + FMT("110010100001tttt", "lack 1%T"), + FMT("110010100010tttt", "lack 2%T"), + FMT("110010100011tttt", "lack 3%T"), + FMT("110010100100tttt", "lack 4%T"), + FMT("110010100101tttt", "lack 5%T"), + FMT("110010100110tttt", "lack 6%T"), + FMT("110010100111tttt", "lack 7%T"), + FMT("110010101000tttt", "lack 8%T"), + FMT("110010101001tttt", "lack 9%T"), + FMT("110010101010tttt", "lack A%T"), + FMT("110010101011tttt", "lack B%T"), + FMT("110010101100tttt", "lack C%T"), + FMT("110010101101tttt", "lack D%T"), + FMT("110010101110tttt", "lack E%T"), + FMT("110010101111tttt", "lack F%T"), + + FMT("11001011dddddddd", "rptk %D"), /* CBxx */ + FMT("11001100dddddddd", "addk %D"), /* CCxx */ + FMT("11001101dddddddd", "subk %D"), /* CDxx */ + FMT("1100111000000000", "eint"), /* CE00 */ + FMT("1100111000000001", "dint"), /* CE01 */ + FMT("1100111000000010", "rovm"), /* CE02 */ + FMT("1100111000000011", "sovm"), /* CE03 */ + FMT("1100111000000100", "cnfd"), /* CE04 */ + FMT("1100111000000101", "cnfp"), /* CE05 */ + FMT("1100111000000110", "rsxm"), /* CE06 */ + FMT("1100111000000111", "ssxm"), /* CE07 */ + FMT("11001110000010kk", "spm %K"), /* CE0x */ + FMT("1100111000001100", "rxf"), /* CE0C */ + FMT("1100111000001101", "sxf"), /* CE0D */ + FMT("110011100000111k", "fort %K"), /* CE0x */ + FMT("1100111000010100", "pac"), /* CE14 */ + FMT("1100111000010101", "apac"), /* CE15 */ + FMT("1100111000010110", "spac"), /* CE16 */ + FMT("1100111000011000", "sfl"), /* CE18 */ + FMT("1100111000011001", "sfr"), /* CE19 */ + FMT("1100111000011011", "abs"), /* CE1B */ + FMT("1100111000011100", "push"), /* CE1C */ + FMT("1100111000011101", "pop"), /* CE1D */ + FMT("1100111000011110", "trap"), /* CE1E */ + FMT("1100111000011111", "idle"), /* CE1F */ + FMT("1100111000100000", "rtxm"), /* CE20 */ + FMT("1100111000100001", "stxm"), /* CE21 */ + FMT("1100111000100011", "neg"), /* CE23 */ + FMT("1100111000100100", "cala"), /* CE24 */ + FMT("1100111000100101", "bacc"), /* CE25 */ + FMT("1100111000100110", "ret"), /* CE26 */ + FMT("1100111000100111", "cmpl"), /* CE27 */ + FMT("1100111000110000", "rc"), /* CE30 */ + FMT("1100111000110001", "sc"), /* CE31 */ + FMT("1100111000110010", "rtc"), /* CE32 */ + FMT("1100111000110011", "stc"), /* CE33 */ + FMT("1100111000110100", "rol"), /* CE34 */ + FMT("1100111000110101", "ror"), /* CE35 */ + FMT("1100111000110110", "rfsm"), /* CE36 */ + FMT("1100111000110111", "sfsm"), /* CE37 */ + FMT("1100111000111000", "rhm"), /* CE38 */ + FMT("1100111000111001", "shm"), /* CE39 */ + FMT("11001110001111kk", "conf %K"), /* CE3x */ + FMT("11001110010100cc", "cmpr %C"), /* CE5x */ + FMT("110011101mmm0010", "norm %M"), /* CEx2 */ + FMT("110011110aaaaaaa", "mpys %A"), /* CFxx */ + FMT("110011111mmmnnnn", "mpys %M%N"), + FMT("11010rrr00000000wwwwwwwwwwwwwwww", "lrlk %R,%W"), /* Dx00 */ + FMT("1101tttt00000001wwwwwwwwwwwwwwww", "lalk %W,%T"), /* Dx01 */ + FMT("1101tttt00000010wwwwwwwwwwwwwwww", "adlk %W,%T"), /* Dx02 */ + FMT("1101tttt00000011wwwwwwwwwwwwwwww", "sblk %W,%T"), /* Dx03 */ + FMT("1101tttt00000100wwwwwwwwwwwwwwww", "andk %W,%T"), /* Dx04 */ + FMT("1101tttt00000101wwwwwwwwwwwwwwww", "ork %W,%T"), /* Dx05 */ + FMT("1101tttt00000110wwwwwwwwwwwwwwww", "xork %W,%T"), /* Dx06 */ + FMT("1110pppp0aaaaaaa", "out %A,%P"), /* Exxx */ + FMT("1110pppp1mmmnnnn", "out %M,%P%N"), + FMT("111100001mmmnnnnbbbbbbbbbbbbbbbb", "bv %B %M%N"), /* F0xx */ + FMT("111100011mmmnnnnbbbbbbbbbbbbbbbb", "bgz %B %M%N"), /* F1xx */ + FMT("111100101mmmnnnnbbbbbbbbbbbbbbbb", "blez %B %M%N"), /* F2xx */ + FMT("111100111mmmnnnnbbbbbbbbbbbbbbbb", "blz %B %M%N"), /* F3xx */ + FMT("111101001mmmnnnnbbbbbbbbbbbbbbbb", "bgez %B %M%N"), /* F4xx */ + FMT("111101011mmmnnnnbbbbbbbbbbbbbbbb", "bnz %B %M%N"), /* F5xx */ + FMT("111101101mmmnnnnbbbbbbbbbbbbbbbb", "bz %B %M%N"), /* F6xx */ + FMT("111101111mmmnnnnbbbbbbbbbbbbbbbb", "bnv %B %M%N"), /* F7xx */ + FMT("111110001mmmnnnnbbbbbbbbbbbbbbbb", "bbz %B %M%N"), /* F8xx */ + FMT("111110011mmmnnnnbbbbbbbbbbbbbbbb", "bbnz %B %M%N"), /* F9xx */ + FMT("111110101mmmnnnnbbbbbbbbbbbbbbbb", "bioz %B %M%N"), /* FAxx */ + FMT("111110111mmmnnnnbbbbbbbbbbbbbbbb", "banz %B %M%N"), /* FBxx */ + FMT("111111000aaaaaaabbbbbbbbbbbbbbbb", "blkp %B,%A"), /* FCxx */ + FMT("111111001mmmnnnnbbbbbbbbbbbbbbbb", "blkp %B,%M%N"), + FMT("111111010aaaaaaabbbbbbbbbbbbbbbb", "blkd %B,%A"), /* FDxx */ + FMT("111111011mmmnnnnbbbbbbbbbbbbbbbb", "blkd %B,%M%N"), + FMT("111111101mmmnnnnbbbbbbbbbbbbbbbb", "call %B %M%N"), /* FExx */ + FMT("111111111mmmnnnnbbbbbbbbbbbbbbbb", "b %B %M%N"), /* FFxx */ + NULL +}; + +#define MAX_OPS (((sizeof(TMS32025Formats) / sizeof(TMS32025Formats[0])) - 1) / PTRS_PER_FORMAT) + +typedef struct opcode { + word mask; /* instruction mask */ + word bits; /* constant bits */ + word extcode; /* value that gets extension code */ + const char *parse; /* how to parse bits */ + const char *fmt; /* instruction format */ +} TMS32025Opcode; + +static TMS32025Opcode Op[MAX_OPS+1]; +static int OpInizialized = 0; + +static void InitDasm32025(void) +{ + const char *p, **ops; + word mask, bits; + int bit; + int i; + + ops = TMS32025Formats; i = 0; + while (*ops) + { + p = *ops; + mask = 0; bits = 0; bit = 15; + while (*p && bit >= 0) + { + switch (*p++) + { + case '1': mask |= 1<<bit; bits |= 1<<bit; bit--; break; + case '0': mask |= 1<<bit; bit--; break; + case ' ': break; + case 'a': + case 'b': + case 'c': + case 'd': + case 'k': + case 'm': + case 'n': + case 'p': + case 'r': + case 's': + case 't': + case 'w': + case 'x': + bit --; + break; + default: fatalerror("Invalid instruction encoding '%s %s'", + ops[0],ops[1]); + } + } + if (bit != -1 ) + { + fatalerror("not enough bits in encoding '%s %s' %d", + ops[0],ops[1],bit); + } + while (isspace(*p)) p++; + if (*p) Op[i].extcode = *p; + Op[i].bits = bits; + Op[i].mask = mask; + Op[i].fmt = ops[1]; + Op[i].parse = ops[0]; + + ops += PTRS_PER_FORMAT; + i++; + } + + OpInizialized = 1; +} + +offs_t tms32025_dasm(char *str, offs_t pc, const UINT8 *oprom, const UINT8 *opram) +{ + UINT32 flags = 0; + int a, b, c, d, k, m, n, p, r, s, t, w, x; /* these can all be filled in by parsing an instruction */ + int i; + int op; + int cnt = 1; + int code; + int bit; + char *strtmp; + const char *cp; /* character pointer in OpFormats */ + + if (!OpInizialized) InitDasm32025(); + + op = -1; /* no matching opcode */ + code = (oprom[0] << 8) | oprom[1]; + for ( i = 0; i < MAX_OPS; i++) + { + if ((code & Op[i].mask) == Op[i].bits) + { + if (op != -1) + { + mame_printf_debug("Error: opcode %04Xh matches %d (%s) and %d (%s)\n", + code,i,Op[i].fmt,op,Op[op].fmt); + } + op = i; + } + } + if (op == -1) + { + sprintf(str,"???? dw %04Xh",code); + return cnt | DASMFLAG_SUPPORTED; + } + strtmp = str; + if (Op[op].extcode) + { + bit = 31; + code <<= 16; + code |= (opram[2] << 8) | opram[3]; + cnt++; + } + else + { + bit = 15; + } + + /* shift out operands */ + cp = Op[op].parse; + a = b = c = d = k = m = n = p = r = s = t = w = x = 0; + + while (bit >= 0) + { + /* mame_printf_debug("{%c/%d}",*cp,bit); */ + switch(*cp) + { + case 'a': a <<=1; a |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'b': b <<=1; b |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'c': c <<=1; c |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'd': d <<=1; d |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'k': k <<=1; k |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'm': m <<=1; m |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'n': n <<=1; n |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'p': p <<=1; p |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'r': r <<=1; r |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 's': s <<=1; s |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 't': t <<=1; t |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'w': w <<=1; w |= ((code & (1<<bit)) ? 1 : 0); bit--; break; + case 'x': bit--; break; + case ' ': break; + case '1': case '0': bit--; break; + case '\0': fatalerror("premature end of parse string, opcode %x, bit = %d",code,bit); + } + cp++; + } + + /* now traverse format string */ + cp = Op[op].fmt; + + if (!strncmp(cp, "cal", 3)) + flags = DASMFLAG_STEP_OVER; + else if (!strncmp(cp, "ret", 3)) + flags = DASMFLAG_STEP_OUT; + + while (*cp) + { + if (*cp == '%') + { + char num[30], *q; + cp++; + switch (*cp++) + { + case 'A': sprintf(num,"$%02X",a); break; + case 'B': sprintf(num,"$%04X",b); break; + case 'C': sprintf(num,"%s",cmpmode[c]); break; + case 'D': sprintf(num,"%02Xh",d); break; + case 'K': sprintf(num,"%d",k); break; + case 'M': sprintf(num,"%s",arith[m]); break; + case 'N': sprintf(num,"%s",nextar[n]); break; + case 'P': sprintf(num,"PA$%01X",p); break; + case 'R': sprintf(num,"AR%d",r); break; + case 'S': sprintf(num,",%d",s); break; + case 'T': sprintf(num,"%01Xh",t); break; + case 'W': sprintf(num,"%04Xh",w); break; + case 'X': break; + default: + fatalerror("illegal escape character in format '%s'",Op[op].fmt); + } + q = num; while (*q) *str++ = *q++; + *str = '\0'; + } + else + { + *str++ = *cp++; + *str = '\0'; + } + } + return cnt | flags | DASMFLAG_SUPPORTED; +} |