/*
 *      Interactive disassembler (IDA).
 *      Version 3.05
 *      Copyright (c) 1990-95 by Ilfak Guilfanov.
 *      ALL RIGHTS RESERVED.
 *                              FIDO:   2:5020/209
 *                              E-mail: ig@estar.msk.su
 *
 */

#include "tms.hpp"

//--------------------------------------------------------------------------
static char *RegNames[] =
{
  "acc","p","bmar",
  "ar0","ar1","ar2","ar3","ar4","ar5","ar6","ar7",
  "cs","ds","dp"
};

//--------------------------------------------------------------------------
predefined_t iregs[] =
{
        { 0x00, "Reserved_0",   NULL },
        { 0x01, "Reserved_1",   NULL },
        { 0x02, "Reserved_2",   NULL },
        { 0x03, "Reserved_3",   NULL },
        { 0x04, "imr",          "Interrupt mask register" },
        { 0x05, "greg",         "Global memory allocation register" },
        { 0x06, "ifr",          "Interrupt flag register" },
        { 0x07, "pmst",         "Processor mode status register" },
        { 0x08, "rptc",         "Repeat counter register" },
        { 0x09, "brcr",         "Block repeat counter register" },
        { 0x0A, "pasr",         "Block repeat program address start register" },
        { 0x0B, "paer",         "Block repeat program address end register" },
        { 0x0C, "treg0",        "Temp reg - multiplicand" },
        { 0x0D, "treg1",        "Temp reg - dynamic shift count (5 bits)" },
        { 0x0E, "treg2",        "Temp reg - bit pointer in dynamic bit test (4 bits)" },
        { 0x0F, "dbmr",         "Dynamic bit manipulation register" },
        { 0x10, "ar0",          NULL },
        { 0x11, "ar1",          NULL },
        { 0x12, "ar2",          NULL },
        { 0x13, "ar3",          NULL },
        { 0x14, "ar4",          NULL },
        { 0x15, "ar5",          NULL },
        { 0x16, "ar6",          NULL },
        { 0x17, "ar7",          NULL },
        { 0x18, "indx",         "Index register" },
        { 0x19, "arcr",         "Auxiliary compare register" },
        { 0x1A, "cbsr1",        "Circular buffer 1 start" },
        { 0x1B, "cber1",        "Circular buffer 1 end" },
        { 0x1C, "cbsr2",        "Circular buffer 2 start" },
        { 0x1D, "cber2",        "Circular buffer 2 end" },
        { 0x1E, "cbcr",         "Circular buffer control register" },
        { 0x1F, "bmar",         "Block move address register" },
        { 0x20, "drr",          "Data receive register" },
        { 0x21, "dxr",          "Data transmit register" },
        { 0x22, "spc",          "Serial port control register" },
        { 0x23, "Reserved_23",  NULL },
        { 0x24, "tim",          "Timer register" },
        { 0x25, "prd",          "Period register" },
        { 0x26, "tcr",          "Timer control register" },
        { 0x27, "Reserved_27",  NULL },
        { 0x28, "pdwsr",        "Program/Data S/W Wait-State register" },
        { 0x29, "iowsr",        "I/O Port S/W Wait-State register" },
        { 0x2A, "cwsr",         "Control S/W Wait-State register" },
        { 0x2B, "Reserved_2b",  NULL },
        { 0x2C, "Reserved_2c",  NULL },
        { 0x2D, "Reserved_2d",  NULL },
        { 0x2E, "Reserved_2e",  NULL },
        { 0x2F, "Reserved_2f",  NULL },
        { 0x30, "trcv",         "TDM Data receive register" },
        { 0x31, "tdxr",         "TDM Data transmit register" },
        { 0x32, "tspc",         "TDM Serial port control register" },
        { 0x33, "tcsr",         "TDM channel select register" },
        { 0x34, "trta",         "TDM Receive/Transmit address register" },
        { 0x35, "trad",         "TDM Received address register" },
        { 0x00, NULL     ,  NULL }
};

predefined_t c2_iregs[] =
{
        { 0x00, "drr",          "Data receive register" },
        { 0x01, "dxr",          "Data transmit register" },
        { 0x02, "tim",          "Timer register" },
        { 0x03, "prd",          "Period register" },
        { 0x04, "imr",          "Interrupt mask register" },
        { 0x05, "greg",         "Global memory allocation register" },
        { 0x00, NULL     ,  NULL }
};

//----------------------------------------------------------------------
static int notify(processor_t::idp_notify msgid, ...) // Various messages:
{
  va_list va;
  va_start(va, msgid);

// A well behaving processor module should call invoke_callbacks()
// in his notify() function. If this function returns 0, then
// the processor module should process the notification itself
// Otherwise the code should be returned to the caller:

  int code = invoke_callbacks(HT_IDP, msgid, va);
  if ( code ) return code;

  switch(msgid)
  {
    case ph.newfile:
      {
        inf.wide_high_byte_first = 1;
        segment_t *sptr = getnseg(0);
        ea_t codeseg = sptr->startEA;
        if ( sptr != NULL )
        {
          if ( sptr->startEA-get_segm_base(sptr) == 0 )
          {
            inf.beginEA = sptr->startEA;
            inf.startIP = 0;
          }
        }
        set_segm_class(sptr, "CODE");
        set_segm_name(sptr,"cseg");
        sel_t sel;
        ea_t data_start;
        if ( get_segm_qty() <= 1 )
        {
          segment_t s;
          ulong size = 64 * 1024L;
          s.startEA = freechunk(0,size,0xF);
          s.endEA = s.startEA + size;
          s.sel   = ushort(s.startEA >> 4);
          s.align = saRelByte;
          s.comb  = scPub;
          add_segm_ex(&s, "dseg", NULL, ADDSEG_NOSREG);
          sel = s.sel;
          data_start = s.startEA;
        }
        else
        {
          segment_t *s = getnseg(1);
          sel = s->sel;
          data_start = s->startEA;
        }
        SetDefaultRegisterValue(getseg(codeseg), rVds, sel);
        splitSRarea1(inf.beginEA,rDP,0,SR_auto);
        inf.nametype = NM_NAM_OFF;


        predefined_t *ptr = isC2() ? c2_iregs : iregs;
        for ( ; ptr->name != NULL; ptr++ )
        {
          ea_t ea = data_start + ptr->addr;
          doByte(ea,1);
          set_name(ea, ptr->name);
          if ( ptr->cmt != NULL ) set_cmt(ea, ptr->cmt, 1);
        }
      }
      break;

    case ph.newprc:
      nprc = va_arg(va, int);
      break;

    case ph.oldfile:
      inf.wide_high_byte_first = 1;     // to be able to work with old bases
      break;

    default:
      break;
  }
  va_end(va);

  return(1);
}

//-----------------------------------------------------------------------
//              DSP Fixed Point COFF Assembler Version 6.20
//              Copyright (c) 1987-1991  Texas Instruments Incorporated
//-----------------------------------------------------------------------
static const char *dspasm_header[] = {
".mmregs",
NULL
};

static asm_t dspasm = {
  AS_COLON | ASH_HEXF0,
  0,
  "DSP Fixed Point COFF Assembler Version 6.20",
  0,
  dspasm_header,        // header lines
  NULL,         // no bad instructions
  NULL,         // org
  ".end",

  ";",          // comment string
  '"',          // string delimiter
  '\'',         // char delimiter
  "\\\"'",      // special symbols in char and string constants

  ".string",    // ascii string directive
  ".word",      // byte directive
  ".long",      // word directive
  NULL,         // double words
  NULL,         // no qwords
  NULL,         // oword  (16 bytes)
  NULL,         // float  (4 bytes)
  NULL,         // double (8 bytes)
  NULL,         // tbyte  (10/12 bytes)
  NULL,         // packed decimal real
  NULL,         // arrays (#h,#d,#v,#s(...)
  ".space 16*%s",// uninited arrays
  ".set",       // equ
  NULL,  	// seg prefix
  NULL,		// checkarg_preline
  NULL,		// checkarg_atomprefix
  NULL,		// checkarg_operations
  NULL,		// XlatAsciiOutput
  NULL,		// curip
  NULL,		// func_header
  NULL,		// func_footer
  NULL,		// public
  NULL,		// weak
  NULL,		// extrn
  NULL,		// comm
  NULL,		// get_type_name
  NULL,		// align
  '(', ')',	// lbrace, rbrace
  NULL,    // mod
  NULL,    // and
  NULL,    // or
  NULL,    // xor
  NULL,    // not
  NULL,    // shl
  NULL,    // shr
  NULL,    // sizeof
};


static asm_t *asms[] = { &dspasm, NULL };
//-----------------------------------------------------------------------
static char *shnames[] = { "TMS320C5", "TMS320C2", NULL };
static char *lnames[] = {
  "Texas Instruments TMS320C5x",
  "Texas Instruments TMS320C2x",
  NULL
};

int nprc;       // processor number
//--------------------------------------------------------------------------
static uchar retcode_1[] = { 0x00, 0xEF };
static uchar retcode_2[] = { 0x00, 0xFF };
static uchar retcode_3[] = { 0x3A, 0xBE };
static uchar retcode_4[] = { 0x38, 0xBE };

static bytes_t retcodes[] = {
 { sizeof(retcode_1), retcode_1 },
 { sizeof(retcode_2), retcode_2 },
 { sizeof(retcode_3), retcode_3 },
 { sizeof(retcode_4), retcode_4 },
 { 0, NULL }
};

//-----------------------------------------------------------------------
//      Processor Definition
//-----------------------------------------------------------------------
processor_t LPH = 
{
  IDP_INTERFACE_VERSION,        // version
  PLFM_TMS,                     // id
  PR_SEGS | PR_RNAMESOK | PR_SEGTRANS, // can use register names for byte names
  16,                           // 8 bits in a byte for code segments
  16,                           // 8 bits in a byte for other segments

  shnames,
  lnames,

  asms,

  notify,

  header,
  footer,

  segstart,
  std_gen_segm_footer,

  tms_assumes,

  ana,
  emu,

  out,
  outop,
  intel_data,
  NULL,                 // compare operands
  NULL,                 // can have type

  qnumber(RegNames),            // Number of registers
  RegNames,                     // Register names
  NULL,                         // get abstract register

  0,                            // Number of register files
  NULL,                         // Register file names
  NULL,                         // Register descriptions
  NULL,                         // Pointer to CPU registers

  rVcs,                         // first
  rDP,                          // last
  2,                            // size of a segment register
  rVcs,rVds,

  NULL,                         // No known code start sequences
  retcodes,

  0,TMS_last,
  Instructions
};
