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/* Disassemble MSP430 instructions.
   Copyright (C) 2002, 2004, 2005, 2007, 2009, 2010
   Free Software Foundation, Inc.
 
   Contributed by Dmitry Diky <diwil@mail.ru>
 
   This file is part of the GNU opcodes library.
 
   This library is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.
 
   It is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
   License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */
 
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <sys/types.h>
 
#include "dis-asm.h"
#include "opintl.h"
#include "libiberty.h"
 
#define DASM_SECTION
#include "opcode/msp430.h"
#undef DASM_SECTION
 
 
#define PS(x)   (0xffff & (x))
 
static unsigned short
msp430dis_opcode (bfd_vma addr, disassemble_info *info)
{
  bfd_byte buffer[2];
  int status;
 
  status = info->read_memory_func (addr, buffer, 2, info);
  if (status != 0)
    {
      info->memory_error_func (status, addr, info);
      return -1;
    }
  return bfd_getl16 (buffer);
}
 
static int
msp430_nooperands (struct msp430_opcode_s *opcode,
                   bfd_vma addr ATTRIBUTE_UNUSED,
                   unsigned short insn ATTRIBUTE_UNUSED,
                   char *comm,
                   int *cycles)
{
  /* Pop with constant.  */
  if (insn == 0x43b2)
    return 0;
  if (insn == opcode->bin_opcode)
    return 2;
 
  if (opcode->fmt == 0)
    {
      if ((insn & 0x0f00) != 3 || (insn & 0x0f00) != 2)
        return 0;
 
      strcpy (comm, "emulated...");
      *cycles = 1;
    }
  else
    {
      strcpy (comm, "return from interupt");
      *cycles = 5;
    }
 
  return 2;
}
 
static int
msp430_singleoperand (disassemble_info *info,
                      struct msp430_opcode_s *opcode,
                      bfd_vma addr,
                      unsigned short insn,
                      char *op,
                      char *comm,
                      int *cycles)
{
  int regs = 0, regd = 0;
  int ad = 0, as = 0;
  int where = 0;
  int cmd_len = 2;
  short dst = 0;
 
  regd = insn & 0x0f;
  regs = (insn & 0x0f00) >> 8;
  as = (insn & 0x0030) >> 4;
  ad = (insn & 0x0080) >> 7;
 
  switch (opcode->fmt)
    {
    case 0:                      /* Emulated work with dst register.  */
      if (regs != 2 && regs != 3 && regs != 1)
        return 0;
 
      /* Check if not clr insn.  */
      if (opcode->bin_opcode == 0x4300 && (ad || as))
        return 0;
 
      /* Check if really inc, incd insns.  */
      if ((opcode->bin_opcode & 0xff00) == 0x5300 && as == 3)
        return 0;
 
      if (ad == 0)
        {
          *cycles = 1;
 
          /* Register.  */
          if (regd == 0)
            {
              *cycles += 1;
              sprintf (op, "r0");
            }
          else if (regd == 1)
            sprintf (op, "r1");
 
          else if (regd == 2)
            sprintf (op, "r2");
 
          else
            sprintf (op, "r%d", regd);
        }
      else      /* ad == 1 msp430dis_opcode.  */
        {
          if (regd == 0)
            {
              /* PC relative.  */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 2;
              *cycles = 4;
              sprintf (op, "0x%04x", dst);
              sprintf (comm, "PC rel. abs addr 0x%04x",
                       PS ((short) (addr + 2) + dst));
            }
          else if (regd == 2)
            {
              /* Absolute.  */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 2;
              *cycles = 4;
              sprintf (op, "&0x%04x", PS (dst));
            }
          else
            {
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 2;
              *cycles = 4;
              sprintf (op, "%d(r%d)", dst, regd);
            }
        }
      break;
 
    case 2:     /* rrc, push, call, swpb, rra, sxt, push, call, reti etc...  */
      if (as == 0)
        {
          if (regd == 3)
            {
              /* Constsnts.  */
              sprintf (op, "#0");
              sprintf (comm, "r3 As==00");
            }
          else
            {
              /* Register.  */
              sprintf (op, "r%d", regd);
            }
          *cycles = 1;
        }
      else if (as == 2)
        {
          *cycles = 1;
          if (regd == 2)
            {
              sprintf (op, "#4");
              sprintf (comm, "r2 As==10");
            }
          else if (regd == 3)
            {
              sprintf (op, "#2");
              sprintf (comm, "r3 As==10");
            }
          else
            {
              *cycles = 3;
              /* Indexed register mode @Rn.  */
              sprintf (op, "@r%d", regd);
            }
        }
      else if (as == 3)
        {
          *cycles = 1;
          if (regd == 2)
            {
              sprintf (op, "#8");
              sprintf (comm, "r2 As==11");
            }
          else if (regd == 3)
            {
              sprintf (op, "#-1");
              sprintf (comm, "r3 As==11");
            }
          else if (regd == 0)
            {
              *cycles = 3;
              /* absolute. @pc+ */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 2;
              sprintf (op, "#%d", dst);
              sprintf (comm, "#0x%04x", PS (dst));
            }
          else
            {
              *cycles = 3;
              sprintf (op, "@r%d+", regd);
            }
        }
      else if (as == 1)
        {
          *cycles = 4;
          if (regd == 0)
            {
              /* PC relative.  */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 2;
              sprintf (op, "0x%04x", PS (dst));
              sprintf (comm, "PC rel. 0x%04x",
                       PS ((short) addr + 2 + dst));
            }
          else if (regd == 2)
            {
              /* Absolute.  */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 2;
              sprintf (op, "&0x%04x", PS (dst));
            }
          else if (regd == 3)
            {
              *cycles = 1;
              sprintf (op, "#1");
              sprintf (comm, "r3 As==01");
            }
          else
            {
              /* Indexd.  */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 2;
              sprintf (op, "%d(r%d)", dst, regd);
            }
        }
      break;
 
    case 3:                     /* Jumps.  */
      where = insn & 0x03ff;
      if (where & 0x200)
        where |= ~0x03ff;
      if (where > 512 || where < -511)
        return 0;
 
      where *= 2;
      sprintf (op, "$%+-8d", where + 2);
      sprintf (comm, "abs 0x%x", PS ((short) (addr) + 2 + where));
      *cycles = 2;
      return 2;
      break;
    default:
      cmd_len = 0;
    }
 
  return cmd_len;
}
 
static int
msp430_doubleoperand (disassemble_info *info,
                      struct msp430_opcode_s *opcode,
                      bfd_vma addr,
                      unsigned short insn,
                      char *op1,
                      char *op2,
                      char *comm1,
                      char *comm2,
                      int *cycles)
{
  int regs = 0, regd = 0;
  int ad = 0, as = 0;
  int cmd_len = 2;
  short dst = 0;
 
  regd = insn & 0x0f;
  regs = (insn & 0x0f00) >> 8;
  as = (insn & 0x0030) >> 4;
  ad = (insn & 0x0080) >> 7;
 
  if (opcode->fmt == 0)
    {
      /* Special case: rla and rlc are the only 2 emulated instructions that
         fall into two operand instructions.  */
      /* With dst, there are only:
         Rm             Register,
         x(Rm)          Indexed,
         0xXXXX         Relative,
         &0xXXXX        Absolute
         emulated_ins   dst
         basic_ins      dst, dst.  */
 
      if (regd != regs || as != ad)
        return 0;                /* May be 'data' section.  */
 
      if (ad == 0)
        {
          /* Register mode.  */
          if (regd == 3)
            {
              strcpy (comm1, _("Illegal as emulation instr"));
              return -1;
            }
 
          sprintf (op1, "r%d", regd);
          *cycles = 1;
        }
      else                      /* ad == 1 */
        {
          if (regd == 0)
            {
              /* PC relative, Symbolic.  */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 4;
              *cycles = 6;
              sprintf (op1, "0x%04x", PS (dst));
              sprintf (comm1, "PC rel. 0x%04x",
                       PS ((short) addr + 2 + dst));
 
            }
          else if (regd == 2)
            {
              /* Absolute.  */
              dst = msp430dis_opcode (addr + 2, info);
              /* If the 'src' field is not the same as the dst
                 then this is not an rla instruction.  */
              if (dst != msp430dis_opcode (addr + 4, info))
                return 0;
              cmd_len += 4;
              *cycles = 6;
              sprintf (op1, "&0x%04x", PS (dst));
            }
          else
            {
              /* Indexed.  */
              dst = msp430dis_opcode (addr + 2, info);
              cmd_len += 4;
              *cycles = 6;
              sprintf (op1, "%d(r%d)", dst, regd);
            }
        }
 
      *op2 = 0;
      *comm2 = 0;
      return cmd_len;
    }
 
  /* Two operands exactly.  */
  if (ad == 0 && regd == 3)
    {
      /* R2/R3 are illegal as dest: may be data section.  */
      strcpy (comm1, _("Illegal as 2-op instr"));
      return -1;
    }
 
  /* Source.  */
  if (as == 0)
    {
      *cycles = 1;
      if (regs == 3)
        {
          /* Constsnts.  */
          sprintf (op1, "#0");
          sprintf (comm1, "r3 As==00");
        }
      else
        {
          /* Register.  */
          sprintf (op1, "r%d", regs);
        }
    }
  else if (as == 2)
    {
      *cycles = 1;
 
      if (regs == 2)
        {
          sprintf (op1, "#4");
          sprintf (comm1, "r2 As==10");
        }
      else if (regs == 3)
        {
          sprintf (op1, "#2");
          sprintf (comm1, "r3 As==10");
        }
      else
        {
          *cycles = 2;
 
          /* Indexed register mode @Rn.  */
          sprintf (op1, "@r%d", regs);
        }
      if (!regs)
        *cycles = 3;
    }
  else if (as == 3)
    {
      if (regs == 2)
        {
          sprintf (op1, "#8");
          sprintf (comm1, "r2 As==11");
          *cycles = 1;
        }
      else if (regs == 3)
        {
          sprintf (op1, "#-1");
          sprintf (comm1, "r3 As==11");
          *cycles = 1;
        }
      else if (regs == 0)
        {
          *cycles = 3;
          /* Absolute. @pc+.  */
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          sprintf (op1, "#%d", dst);
          sprintf (comm1, "#0x%04x", PS (dst));
        }
      else
        {
          *cycles = 2;
          sprintf (op1, "@r%d+", regs);
        }
    }
  else if (as == 1)
    {
      if (regs == 0)
        {
          *cycles = 4;
          /* PC relative.  */
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          sprintf (op1, "0x%04x", PS (dst));
          sprintf (comm1, "PC rel. 0x%04x",
                   PS ((short) addr + 2 + dst));
        }
      else if (regs == 2)
        {
          *cycles = 2;
          /* Absolute.  */
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          sprintf (op1, "&0x%04x", PS (dst));
          sprintf (comm1, "0x%04x", PS (dst));
        }
      else if (regs == 3)
        {
          *cycles = 1;
          sprintf (op1, "#1");
          sprintf (comm1, "r3 As==01");
        }
      else
        {
          *cycles = 3;
          /* Indexed.  */
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          sprintf (op1, "%d(r%d)", dst, regs);
        }
    }
 
  /* Destination. Special care needed on addr + XXXX.  */
 
  if (ad == 0)
    {
      /* Register.  */
      if (regd == 0)
        {
          *cycles += 1;
          sprintf (op2, "r0");
        }
      else if (regd == 1)
        sprintf (op2, "r1");
 
      else if (regd == 2)
        sprintf (op2, "r2");
 
      else
        sprintf (op2, "r%d", regd);
    }
  else  /* ad == 1.  */
    {
      * cycles += 3;
 
      if (regd == 0)
        {
          /* PC relative.  */
          *cycles += 1;
          dst = msp430dis_opcode (addr + cmd_len, info);
          sprintf (op2, "0x%04x", PS (dst));
          sprintf (comm2, "PC rel. 0x%04x",
                   PS ((short) addr + cmd_len + dst));
          cmd_len += 2;
        }
      else if (regd == 2)
        {
          /* Absolute.  */
          dst = msp430dis_opcode (addr + cmd_len, info);
          cmd_len += 2;
          sprintf (op2, "&0x%04x", PS (dst));
        }
      else
        {
          dst = msp430dis_opcode (addr + cmd_len, info);
          cmd_len += 2;
          sprintf (op2, "%d(r%d)", dst, regd);
        }
    }
 
  return cmd_len;
}
 
static int
msp430_branchinstr (disassemble_info *info,
                    struct msp430_opcode_s *opcode ATTRIBUTE_UNUSED,
                    bfd_vma addr ATTRIBUTE_UNUSED,
                    unsigned short insn,
                    char *op1,
                    char *comm1,
                    int *cycles)
{
  int regs = 0, regd = 0;
  int as = 0;
  int cmd_len = 2;
  short dst = 0;
 
  regd = insn & 0x0f;
  regs = (insn & 0x0f00) >> 8;
  as = (insn & 0x0030) >> 4;
 
  if (regd != 0) /* Destination register is not a PC.  */
    return 0;
 
  /* dst is a source register.  */
  if (as == 0)
    {
      /* Constants.  */
      if (regs == 3)
        {
          *cycles = 1;
          sprintf (op1, "#0");
          sprintf (comm1, "r3 As==00");
        }
      else
        {
          /* Register.  */
          *cycles = 1;
          sprintf (op1, "r%d", regs);
        }
    }
  else if (as == 2)
    {
      if (regs == 2)
        {
          *cycles = 2;
          sprintf (op1, "#4");
          sprintf (comm1, "r2 As==10");
        }
      else if (regs == 3)
        {
          *cycles = 1;
          sprintf (op1, "#2");
          sprintf (comm1, "r3 As==10");
        }
      else
        {
          /* Indexed register mode @Rn.  */
          *cycles = 2;
          sprintf (op1, "@r%d", regs);
        }
    }
  else if (as == 3)
    {
      if (regs == 2)
        {
          *cycles = 1;
          sprintf (op1, "#8");
          sprintf (comm1, "r2 As==11");
        }
      else if (regs == 3)
        {
          *cycles = 1;
          sprintf (op1, "#-1");
          sprintf (comm1, "r3 As==11");
        }
      else if (regs == 0)
        {
          /* Absolute. @pc+  */
          *cycles = 3;
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          sprintf (op1, "#0x%04x", PS (dst));
        }
      else
        {
          *cycles = 2;
          sprintf (op1, "@r%d+", regs);
        }
    }
  else if (as == 1)
    {
      * cycles = 3;
 
      if (regs == 0)
        {
          /* PC relative.  */
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          (*cycles)++;
          sprintf (op1, "0x%04x", PS (dst));
          sprintf (comm1, "PC rel. 0x%04x",
                   PS ((short) addr + 2 + dst));
        }
      else if (regs == 2)
        {
          /* Absolute.  */
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          sprintf (op1, "&0x%04x", PS (dst));
        }
      else if (regs == 3)
        {
          (*cycles)--;
          sprintf (op1, "#1");
          sprintf (comm1, "r3 As==01");
        }
      else
        {
          /* Indexd.  */
          dst = msp430dis_opcode (addr + 2, info);
          cmd_len += 2;
          sprintf (op1, "%d(r%d)", dst, regs);
        }
    }
 
  return cmd_len;
}
 
int
print_insn_msp430 (bfd_vma addr, disassemble_info *info)
{
  void *stream = info->stream;
  fprintf_ftype prin = info->fprintf_func;
  struct msp430_opcode_s *opcode;
  char op1[32], op2[32], comm1[64], comm2[64];
  int cmd_len = 0;
  unsigned short insn;
  int cycles = 0;
  char *bc = "";
  char dinfo[32];               /* Debug purposes.  */
 
  insn = msp430dis_opcode (addr, info);
  sprintf (dinfo, "0x%04x", insn);
 
  if (((int) addr & 0xffff) > 0xffdf)
    {
      (*prin) (stream, "interrupt service routine at 0x%04x", 0xffff & insn);
      return 2;
    }
 
  *comm1 = 0;
  *comm2 = 0;
 
  for (opcode = msp430_opcodes; opcode->name; opcode++)
    {
      if ((insn & opcode->bin_mask) == opcode->bin_opcode
          && opcode->bin_opcode != 0x9300)
        {
          *op1 = 0;
          *op2 = 0;
          *comm1 = 0;
          *comm2 = 0;
 
          /* r0 as destination. Ad should be zero.  */
          if (opcode->insn_opnumb == 3 && (insn & 0x000f) == 0
              && (0x0080 & insn) == 0)
            {
              cmd_len =
                msp430_branchinstr (info, opcode, addr, insn, op1, comm1,
                                    &cycles);
              if (cmd_len)
                break;
            }
 
          switch (opcode->insn_opnumb)
            {
            case 0:
              cmd_len = msp430_nooperands (opcode, addr, insn, comm1, &cycles);
              break;
            case 2:
              cmd_len =
                msp430_doubleoperand (info, opcode, addr, insn, op1, op2,
                                      comm1, comm2, &cycles);
              if (insn & BYTE_OPERATION)
                bc = ".b";
              break;
            case 1:
              cmd_len =
                msp430_singleoperand (info, opcode, addr, insn, op1, comm1,
                                      &cycles);
              if (insn & BYTE_OPERATION && opcode->fmt != 3)
                bc = ".b";
              break;
            default:
              break;
            }
        }
 
      if (cmd_len)
        break;
    }
 
  dinfo[5] = 0;
 
  if (cmd_len < 1)
    {
      /* Unknown opcode, or invalid combination of operands.  */
      (*prin) (stream, ".word   0x%04x; ????", PS (insn));
      return 2;
    }
 
  (*prin) (stream, "%s%s", opcode->name, bc);
 
  if (*op1)
    (*prin) (stream, "\t%s", op1);
  if (*op2)
    (*prin) (stream, ",");
 
  if (strlen (op1) < 7)
    (*prin) (stream, "\t");
  if (!strlen (op1))
    (*prin) (stream, "\t");
 
  if (*op2)
    (*prin) (stream, "%s", op2);
  if (strlen (op2) < 8)
    (*prin) (stream, "\t");
 
  if (*comm1 || *comm2)
    (*prin) (stream, ";");
  else if (cycles)
    {
      if (*op2)
        (*prin) (stream, ";");
      else
        {
          if (strlen (op1) < 7)
            (*prin) (stream, ";");
          else
            (*prin) (stream, "\t;");
        }
    }
  if (*comm1)
    (*prin) (stream, "%s", comm1);
  if (*comm1 && *comm2)
    (*prin) (stream, ",");
  if (*comm2)
    (*prin) (stream, " %s", comm2);
  return cmd_len;
}

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[/] [openrisc/] [trunk/] [gnu-stable/] [gdb-7.2/] [opcodes/] [msp430-dis.c] - Blame information for rev 330

Line No.	Rev	Author	Line
1	330	jeremybenn	`/* Disassemble MSP430 instructions.`
2			`Copyright (C) 2002, 2004, 2005, 2007, 2009, 2010`
3			`Free Software Foundation, Inc.`
4
5			`Contributed by Dmitry Diky <diwil@mail.ru>`
6
7			`This file is part of the GNU opcodes library.`
8
9			`This library is free software; you can redistribute it and/or modify`
10			`it under the terms of the GNU General Public License as published by`
11			`the Free Software Foundation; either version 3, or (at your option)`
12			`any later version.`
13
14			`It is distributed in the hope that it will be useful, but WITHOUT`
15			`ANY WARRANTY; without even the implied warranty of MERCHANTABILITY`
16			`or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public`
17			`License for more details.`
18
19			`You should have received a copy of the GNU General Public License`
20			`along with this program; if not, write to the Free Software`
21			`Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,`
22			`MA 02110-1301, USA. */`
23
24			`#include <stdio.h>`
25			`#include <ctype.h>`
26			`#include <string.h>`
27			`#include <sys/types.h>`
28
29			`#include "dis-asm.h"`
30			`#include "opintl.h"`
31			`#include "libiberty.h"`
32
33			`#define DASM_SECTION`
34			`#include "opcode/msp430.h"`
35			`#undef DASM_SECTION`
36
37
38			`#define PS(x) (0xffff & (x))`
39
40			`static unsigned short`
41			`msp430dis_opcode (bfd_vma addr, disassemble_info *info)`
42			`{`
43			`bfd_byte buffer[2];`
44			`int status;`
45
46			`status = info->read_memory_func (addr, buffer, 2, info);`
47			`if (status != 0)`
48			`{`
49			`info->memory_error_func (status, addr, info);`
50			`return -1;`
51			`}`
52			`return bfd_getl16 (buffer);`
53			`}`
54
55			`static int`
56			`msp430_nooperands (struct msp430_opcode_s *opcode,`
57			`bfd_vma addr ATTRIBUTE_UNUSED,`
58			`unsigned short insn ATTRIBUTE_UNUSED,`
59			`char *comm,`
60			`int *cycles)`
61			`{`
62			`/* Pop with constant. */`
63			`if (insn == 0x43b2)`
64			`return 0;`
65			`if (insn == opcode->bin_opcode)`
66			`return 2;`
67
68			`if (opcode->fmt == 0)`
69			`{`
70			`if ((insn & 0x0f00) != 3 \|\| (insn & 0x0f00) != 2)`
71			`return 0;`
72
73			`strcpy (comm, "emulated...");`
74			`*cycles = 1;`
75			`}`
76			`else`
77			`{`
78			`strcpy (comm, "return from interupt");`
79			`*cycles = 5;`
80			`}`
81
82			`return 2;`
83			`}`
84
85			`static int`
86			`msp430_singleoperand (disassemble_info *info,`
87			`struct msp430_opcode_s *opcode,`
88			`bfd_vma addr,`
89			`unsigned short insn,`
90			`char *op,`
91			`char *comm,`
92			`int *cycles)`
93			`{`
94			`int regs = 0, regd = 0;`
95			`int ad = 0, as = 0;`
96			`int where = 0;`
97			`int cmd_len = 2;`
98			`short dst = 0;`
99
100			`regd = insn & 0x0f;`
101			`regs = (insn & 0x0f00) >> 8;`
102			`as = (insn & 0x0030) >> 4;`
103			`ad = (insn & 0x0080) >> 7;`
104
105			`switch (opcode->fmt)`
106			`{`
107			`case 0: /* Emulated work with dst register. */`
108			`if (regs != 2 && regs != 3 && regs != 1)`
109			`return 0;`
110
111			`/* Check if not clr insn. */`
112			`if (opcode->bin_opcode == 0x4300 && (ad \|\| as))`
113			`return 0;`
114
115			`/* Check if really inc, incd insns. */`
116			`if ((opcode->bin_opcode & 0xff00) == 0x5300 && as == 3)`
117			`return 0;`
118
119			`if (ad == 0)`
120			`{`
121			`*cycles = 1;`
122
123			`/* Register. */`
124			`if (regd == 0)`
125			`{`
126			`*cycles += 1;`
127			`sprintf (op, "r0");`
128			`}`
129			`else if (regd == 1)`
130			`sprintf (op, "r1");`
131
132			`else if (regd == 2)`
133			`sprintf (op, "r2");`
134
135			`else`
136			`sprintf (op, "r%d", regd);`
137			`}`
138			`else /* ad == 1 msp430dis_opcode. */`
139			`{`
140			`if (regd == 0)`
141			`{`
142			`/* PC relative. */`
143			`dst = msp430dis_opcode (addr + 2, info);`
144			`cmd_len += 2;`
145			`*cycles = 4;`
146			`sprintf (op, "0x%04x", dst);`
147			`sprintf (comm, "PC rel. abs addr 0x%04x",`
148			`PS ((short) (addr + 2) + dst));`
149			`}`
150			`else if (regd == 2)`
151			`{`
152			`/* Absolute. */`
153			`dst = msp430dis_opcode (addr + 2, info);`
154			`cmd_len += 2;`
155			`*cycles = 4;`
156			`sprintf (op, "&0x%04x", PS (dst));`
157			`}`
158			`else`
159			`{`
160			`dst = msp430dis_opcode (addr + 2, info);`
161			`cmd_len += 2;`
162			`*cycles = 4;`
163			`sprintf (op, "%d(r%d)", dst, regd);`
164			`}`
165			`}`
166			`break;`
167
168			`case 2: /* rrc, push, call, swpb, rra, sxt, push, call, reti etc... */`
169			`if (as == 0)`
170			`{`
171			`if (regd == 3)`
172			`{`
173			`/* Constsnts. */`
174			`sprintf (op, "#0");`
175			`sprintf (comm, "r3 As==00");`
176			`}`
177			`else`
178			`{`
179			`/* Register. */`
180			`sprintf (op, "r%d", regd);`
181			`}`
182			`*cycles = 1;`
183			`}`
184			`else if (as == 2)`
185			`{`
186			`*cycles = 1;`
187			`if (regd == 2)`
188			`{`
189			`sprintf (op, "#4");`
190			`sprintf (comm, "r2 As==10");`
191			`}`
192			`else if (regd == 3)`
193			`{`
194			`sprintf (op, "#2");`
195			`sprintf (comm, "r3 As==10");`
196			`}`
197			`else`
198			`{`
199			`*cycles = 3;`
200			`/* Indexed register mode @Rn. */`
201			`sprintf (op, "@r%d", regd);`
202			`}`
203			`}`
204			`else if (as == 3)`
205			`{`
206			`*cycles = 1;`
207			`if (regd == 2)`
208			`{`
209			`sprintf (op, "#8");`
210			`sprintf (comm, "r2 As==11");`
211			`}`
212			`else if (regd == 3)`
213			`{`
214			`sprintf (op, "#-1");`
215			`sprintf (comm, "r3 As==11");`
216			`}`
217			`else if (regd == 0)`
218			`{`
219			`*cycles = 3;`
220			`/* absolute. @pc+ */`
221			`dst = msp430dis_opcode (addr + 2, info);`
222			`cmd_len += 2;`
223			`sprintf (op, "#%d", dst);`
224			`sprintf (comm, "#0x%04x", PS (dst));`
225			`}`
226			`else`
227			`{`
228			`*cycles = 3;`
229			`sprintf (op, "@r%d+", regd);`
230			`}`
231			`}`
232			`else if (as == 1)`
233			`{`
234			`*cycles = 4;`
235			`if (regd == 0)`
236			`{`
237			`/* PC relative. */`
238			`dst = msp430dis_opcode (addr + 2, info);`
239			`cmd_len += 2;`
240			`sprintf (op, "0x%04x", PS (dst));`
241			`sprintf (comm, "PC rel. 0x%04x",`
242			`PS ((short) addr + 2 + dst));`
243			`}`
244			`else if (regd == 2)`
245			`{`
246			`/* Absolute. */`
247			`dst = msp430dis_opcode (addr + 2, info);`
248			`cmd_len += 2;`
249			`sprintf (op, "&0x%04x", PS (dst));`
250			`}`
251			`else if (regd == 3)`
252			`{`
253			`*cycles = 1;`
254			`sprintf (op, "#1");`
255			`sprintf (comm, "r3 As==01");`
256			`}`
257			`else`
258			`{`
259			`/* Indexd. */`
260			`dst = msp430dis_opcode (addr + 2, info);`
261			`cmd_len += 2;`
262			`sprintf (op, "%d(r%d)", dst, regd);`
263			`}`
264			`}`
265			`break;`
266
267			`case 3: /* Jumps. */`
268			`where = insn & 0x03ff;`
269			`if (where & 0x200)`
270			`where \|= ~0x03ff;`
271			`if (where > 512 \|\| where < -511)`
272			`return 0;`
273
274			`where *= 2;`
275			`sprintf (op, "$%+-8d", where + 2);`
276			`sprintf (comm, "abs 0x%x", PS ((short) (addr) + 2 + where));`
277			`*cycles = 2;`
278			`return 2;`
279			`break;`
280			`default:`
281			`cmd_len = 0;`
282			`}`
283
284			`return cmd_len;`
285			`}`
286
287			`static int`
288			`msp430_doubleoperand (disassemble_info *info,`
289			`struct msp430_opcode_s *opcode,`
290			`bfd_vma addr,`
291			`unsigned short insn,`
292			`char *op1,`
293			`char *op2,`
294			`char *comm1,`
295			`char *comm2,`
296			`int *cycles)`
297			`{`
298			`int regs = 0, regd = 0;`
299			`int ad = 0, as = 0;`
300			`int cmd_len = 2;`
301			`short dst = 0;`
302
303			`regd = insn & 0x0f;`
304			`regs = (insn & 0x0f00) >> 8;`
305			`as = (insn & 0x0030) >> 4;`
306			`ad = (insn & 0x0080) >> 7;`
307
308			`if (opcode->fmt == 0)`
309			`{`
310			`/* Special case: rla and rlc are the only 2 emulated instructions that`
311			`fall into two operand instructions. */`
312			`/* With dst, there are only:`
313			`Rm Register,`
314			`x(Rm) Indexed,`
315			`0xXXXX Relative,`
316			`&0xXXXX Absolute`
317			`emulated_ins dst`
318			`basic_ins dst, dst. */`
319
320			`if (regd != regs \|\| as != ad)`
321			`return 0; /* May be 'data' section. */`
322
323			`if (ad == 0)`
324			`{`
325			`/* Register mode. */`
326			`if (regd == 3)`
327			`{`
328			`strcpy (comm1, _("Illegal as emulation instr"));`
329			`return -1;`
330			`}`
331
332			`sprintf (op1, "r%d", regd);`
333			`*cycles = 1;`
334			`}`
335			`else /* ad == 1 */`
336			`{`
337			`if (regd == 0)`
338			`{`
339			`/* PC relative, Symbolic. */`
340			`dst = msp430dis_opcode (addr + 2, info);`
341			`cmd_len += 4;`
342			`*cycles = 6;`
343			`sprintf (op1, "0x%04x", PS (dst));`
344			`sprintf (comm1, "PC rel. 0x%04x",`
345			`PS ((short) addr + 2 + dst));`
346
347			`}`
348			`else if (regd == 2)`
349			`{`
350			`/* Absolute. */`
351			`dst = msp430dis_opcode (addr + 2, info);`
352			`/* If the 'src' field is not the same as the dst`
353			`then this is not an rla instruction. */`
354			`if (dst != msp430dis_opcode (addr + 4, info))`
355			`return 0;`
356			`cmd_len += 4;`
357			`*cycles = 6;`
358			`sprintf (op1, "&0x%04x", PS (dst));`
359			`}`
360			`else`
361			`{`
362			`/* Indexed. */`
363			`dst = msp430dis_opcode (addr + 2, info);`
364			`cmd_len += 4;`
365			`*cycles = 6;`
366			`sprintf (op1, "%d(r%d)", dst, regd);`
367			`}`
368			`}`
369
370			`*op2 = 0;`
371			`*comm2 = 0;`
372			`return cmd_len;`
373			`}`
374
375			`/* Two operands exactly. */`
376			`if (ad == 0 && regd == 3)`
377			`{`
378			`/* R2/R3 are illegal as dest: may be data section. */`
379			`strcpy (comm1, _("Illegal as 2-op instr"));`
380			`return -1;`
381			`}`
382
383			`/* Source. */`
384			`if (as == 0)`
385			`{`
386			`*cycles = 1;`
387			`if (regs == 3)`
388			`{`
389			`/* Constsnts. */`
390			`sprintf (op1, "#0");`
391			`sprintf (comm1, "r3 As==00");`
392			`}`
393			`else`
394			`{`
395			`/* Register. */`
396			`sprintf (op1, "r%d", regs);`
397			`}`
398			`}`
399			`else if (as == 2)`
400			`{`
401			`*cycles = 1;`
402
403			`if (regs == 2)`
404			`{`
405			`sprintf (op1, "#4");`
406			`sprintf (comm1, "r2 As==10");`
407			`}`
408			`else if (regs == 3)`
409			`{`
410			`sprintf (op1, "#2");`
411			`sprintf (comm1, "r3 As==10");`
412			`}`
413			`else`
414			`{`
415			`*cycles = 2;`
416
417			`/* Indexed register mode @Rn. */`
418			`sprintf (op1, "@r%d", regs);`
419			`}`
420			`if (!regs)`
421			`*cycles = 3;`
422			`}`
423			`else if (as == 3)`
424			`{`
425			`if (regs == 2)`
426			`{`
427			`sprintf (op1, "#8");`
428			`sprintf (comm1, "r2 As==11");`
429			`*cycles = 1;`
430			`}`
431			`else if (regs == 3)`
432			`{`
433			`sprintf (op1, "#-1");`
434			`sprintf (comm1, "r3 As==11");`
435			`*cycles = 1;`
436			`}`
437			`else if (regs == 0)`
438			`{`
439			`*cycles = 3;`
440			`/* Absolute. @pc+. */`
441			`dst = msp430dis_opcode (addr + 2, info);`
442			`cmd_len += 2;`
443			`sprintf (op1, "#%d", dst);`
444			`sprintf (comm1, "#0x%04x", PS (dst));`
445			`}`
446			`else`
447			`{`
448			`*cycles = 2;`
449			`sprintf (op1, "@r%d+", regs);`
450			`}`
451			`}`
452			`else if (as == 1)`
453			`{`
454			`if (regs == 0)`
455			`{`
456			`*cycles = 4;`
457			`/* PC relative. */`
458			`dst = msp430dis_opcode (addr + 2, info);`
459			`cmd_len += 2;`
460			`sprintf (op1, "0x%04x", PS (dst));`
461			`sprintf (comm1, "PC rel. 0x%04x",`
462			`PS ((short) addr + 2 + dst));`
463			`}`
464			`else if (regs == 2)`
465			`{`
466			`*cycles = 2;`
467			`/* Absolute. */`
468			`dst = msp430dis_opcode (addr + 2, info);`
469			`cmd_len += 2;`
470			`sprintf (op1, "&0x%04x", PS (dst));`
471			`sprintf (comm1, "0x%04x", PS (dst));`
472			`}`
473			`else if (regs == 3)`
474			`{`
475			`*cycles = 1;`
476			`sprintf (op1, "#1");`
477			`sprintf (comm1, "r3 As==01");`
478			`}`
479			`else`
480			`{`
481			`*cycles = 3;`
482			`/* Indexed. */`
483			`dst = msp430dis_opcode (addr + 2, info);`
484			`cmd_len += 2;`
485			`sprintf (op1, "%d(r%d)", dst, regs);`
486			`}`
487			`}`
488
489			`/* Destination. Special care needed on addr + XXXX. */`
490
491			`if (ad == 0)`
492			`{`
493			`/* Register. */`
494			`if (regd == 0)`
495			`{`
496			`*cycles += 1;`
497			`sprintf (op2, "r0");`
498			`}`
499			`else if (regd == 1)`
500			`sprintf (op2, "r1");`
501
502			`else if (regd == 2)`
503			`sprintf (op2, "r2");`
504
505			`else`
506			`sprintf (op2, "r%d", regd);`
507			`}`
508			`else /* ad == 1. */`
509			`{`
510			`* cycles += 3;`
511
512			`if (regd == 0)`
513			`{`
514			`/* PC relative. */`
515			`*cycles += 1;`
516			`dst = msp430dis_opcode (addr + cmd_len, info);`
517			`sprintf (op2, "0x%04x", PS (dst));`
518			`sprintf (comm2, "PC rel. 0x%04x",`
519			`PS ((short) addr + cmd_len + dst));`
520			`cmd_len += 2;`
521			`}`
522			`else if (regd == 2)`
523			`{`
524			`/* Absolute. */`
525			`dst = msp430dis_opcode (addr + cmd_len, info);`
526			`cmd_len += 2;`
527			`sprintf (op2, "&0x%04x", PS (dst));`
528			`}`
529			`else`
530			`{`
531			`dst = msp430dis_opcode (addr + cmd_len, info);`
532			`cmd_len += 2;`
533			`sprintf (op2, "%d(r%d)", dst, regd);`
534			`}`
535			`}`
536
537			`return cmd_len;`
538			`}`
539
540			`static int`
541			`msp430_branchinstr (disassemble_info *info,`
542			`struct msp430_opcode_s *opcode ATTRIBUTE_UNUSED,`
543			`bfd_vma addr ATTRIBUTE_UNUSED,`
544			`unsigned short insn,`
545			`char *op1,`
546			`char *comm1,`
547			`int *cycles)`
548			`{`
549			`int regs = 0, regd = 0;`
550			`int as = 0;`
551			`int cmd_len = 2;`
552			`short dst = 0;`
553
554			`regd = insn & 0x0f;`
555			`regs = (insn & 0x0f00) >> 8;`
556			`as = (insn & 0x0030) >> 4;`
557
558			`if (regd != 0) /* Destination register is not a PC. */`
559			`return 0;`
560
561			`/* dst is a source register. */`
562			`if (as == 0)`
563			`{`
564			`/* Constants. */`
565			`if (regs == 3)`
566			`{`
567			`*cycles = 1;`
568			`sprintf (op1, "#0");`
569			`sprintf (comm1, "r3 As==00");`
570			`}`
571			`else`
572			`{`
573			`/* Register. */`
574			`*cycles = 1;`
575			`sprintf (op1, "r%d", regs);`
576			`}`
577			`}`
578			`else if (as == 2)`
579			`{`
580			`if (regs == 2)`
581			`{`
582			`*cycles = 2;`
583			`sprintf (op1, "#4");`
584			`sprintf (comm1, "r2 As==10");`
585			`}`
586			`else if (regs == 3)`
587			`{`
588			`*cycles = 1;`
589			`sprintf (op1, "#2");`
590			`sprintf (comm1, "r3 As==10");`
591			`}`
592			`else`
593			`{`
594			`/* Indexed register mode @Rn. */`
595			`*cycles = 2;`
596			`sprintf (op1, "@r%d", regs);`
597			`}`
598			`}`
599			`else if (as == 3)`
600			`{`
601			`if (regs == 2)`
602			`{`
603			`*cycles = 1;`
604			`sprintf (op1, "#8");`
605			`sprintf (comm1, "r2 As==11");`
606			`}`
607			`else if (regs == 3)`
608			`{`
609			`*cycles = 1;`
610			`sprintf (op1, "#-1");`
611			`sprintf (comm1, "r3 As==11");`
612			`}`
613			`else if (regs == 0)`
614			`{`
615			`/* Absolute. @pc+ */`
616			`*cycles = 3;`
617			`dst = msp430dis_opcode (addr + 2, info);`
618			`cmd_len += 2;`
619			`sprintf (op1, "#0x%04x", PS (dst));`
620			`}`
621			`else`
622			`{`
623			`*cycles = 2;`
624			`sprintf (op1, "@r%d+", regs);`
625			`}`
626			`}`
627			`else if (as == 1)`
628			`{`
629			`* cycles = 3;`
630
631			`if (regs == 0)`
632			`{`
633			`/* PC relative. */`
634			`dst = msp430dis_opcode (addr + 2, info);`
635			`cmd_len += 2;`
636			`(*cycles)++;`
637			`sprintf (op1, "0x%04x", PS (dst));`
638			`sprintf (comm1, "PC rel. 0x%04x",`
639			`PS ((short) addr + 2 + dst));`
640			`}`
641			`else if (regs == 2)`
642			`{`
643			`/* Absolute. */`
644			`dst = msp430dis_opcode (addr + 2, info);`
645			`cmd_len += 2;`
646			`sprintf (op1, "&0x%04x", PS (dst));`
647			`}`
648			`else if (regs == 3)`
649			`{`
650			`(*cycles)--;`
651			`sprintf (op1, "#1");`
652			`sprintf (comm1, "r3 As==01");`
653			`}`
654			`else`
655			`{`
656			`/* Indexd. */`
657			`dst = msp430dis_opcode (addr + 2, info);`
658			`cmd_len += 2;`
659			`sprintf (op1, "%d(r%d)", dst, regs);`
660			`}`
661			`}`
662
663			`return cmd_len;`
664			`}`
665
666			`int`
667			`print_insn_msp430 (bfd_vma addr, disassemble_info *info)`
668			`{`
669			`void *stream = info->stream;`
670			`fprintf_ftype prin = info->fprintf_func;`
671			`struct msp430_opcode_s *opcode;`
672			`char op1[32], op2[32], comm1[64], comm2[64];`
673			`int cmd_len = 0;`
674			`unsigned short insn;`
675			`int cycles = 0;`
676			`char *bc = "";`
677			`char dinfo[32]; /* Debug purposes. */`
678
679			`insn = msp430dis_opcode (addr, info);`
680			`sprintf (dinfo, "0x%04x", insn);`
681
682			`if (((int) addr & 0xffff) > 0xffdf)`
683			`{`
684			`(*prin) (stream, "interrupt service routine at 0x%04x", 0xffff & insn);`
685			`return 2;`
686			`}`
687
688			`*comm1 = 0;`
689			`*comm2 = 0;`
690
691			`for (opcode = msp430_opcodes; opcode->name; opcode++)`
692			`{`
693			`if ((insn & opcode->bin_mask) == opcode->bin_opcode`
694			`&& opcode->bin_opcode != 0x9300)`
695			`{`
696			`*op1 = 0;`
697			`*op2 = 0;`
698			`*comm1 = 0;`
699			`*comm2 = 0;`
700
701			`/* r0 as destination. Ad should be zero. */`
702			`if (opcode->insn_opnumb == 3 && (insn & 0x000f) == 0`
703			`&& (0x0080 & insn) == 0)`
704			`{`
705			`cmd_len =`
706			`msp430_branchinstr (info, opcode, addr, insn, op1, comm1,`
707			`&cycles);`
708			`if (cmd_len)`
709			`break;`
710			`}`
711
712			`switch (opcode->insn_opnumb)`
713			`{`
714			`case 0:`
715			`cmd_len = msp430_nooperands (opcode, addr, insn, comm1, &cycles);`
716			`break;`
717			`case 2:`
718			`cmd_len =`
719			`msp430_doubleoperand (info, opcode, addr, insn, op1, op2,`
720			`comm1, comm2, &cycles);`
721			`if (insn & BYTE_OPERATION)`
722			`bc = ".b";`
723			`break;`
724			`case 1:`
725			`cmd_len =`
726			`msp430_singleoperand (info, opcode, addr, insn, op1, comm1,`
727			`&cycles);`
728			`if (insn & BYTE_OPERATION && opcode->fmt != 3)`
729			`bc = ".b";`
730			`break;`
731			`default:`
732			`break;`
733			`}`
734			`}`
735
736			`if (cmd_len)`
737			`break;`
738			`}`
739
740			`dinfo[5] = 0;`
741
742			`if (cmd_len < 1)`
743			`{`
744			`/* Unknown opcode, or invalid combination of operands. */`
745			`(*prin) (stream, ".word 0x%04x; ????", PS (insn));`
746			`return 2;`
747			`}`
748
749			`(*prin) (stream, "%s%s", opcode->name, bc);`
750
751			`if (*op1)`
752			`(*prin) (stream, "\t%s", op1);`
753			`if (*op2)`
754			`(*prin) (stream, ",");`
755
756			`if (strlen (op1) < 7)`
757			`(*prin) (stream, "\t");`
758			`if (!strlen (op1))`
759			`(*prin) (stream, "\t");`
760
761			`if (*op2)`
762			`(*prin) (stream, "%s", op2);`
763			`if (strlen (op2) < 8)`
764			`(*prin) (stream, "\t");`
765
766			`if (comm1 \|\| comm2)`
767			`(*prin) (stream, ";");`
768			`else if (cycles)`
769			`{`
770			`if (*op2)`
771			`(*prin) (stream, ";");`
772			`else`
773			`{`
774			`if (strlen (op1) < 7)`
775			`(*prin) (stream, ";");`
776			`else`
777			`(*prin) (stream, "\t;");`
778			`}`
779			`}`
780			`if (*comm1)`
781			`(*prin) (stream, "%s", comm1);`
782			`if (comm1 && comm2)`
783			`(*prin) (stream, ",");`
784			`if (*comm2)`
785			`(*prin) (stream, " %s", comm2);`
786			`return cmd_len;`
787			`}`