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[/] [openrisc/] [trunk/] [gnu-stable/] [binutils-2.20.1/] [opcodes/] [moxie-dis.c] - Blame information for rev 855

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/* Disassemble moxie instructions.
   Copyright 2009
   Free Software Foundation, Inc.
 
   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 "sysdep.h"
#define STATIC_TABLE
#define DEFINE_TABLE
 
#include "opcode/moxie.h"
#include "dis-asm.h"
 
static fprintf_ftype fpr;
static void *stream;
 
/* Macros to extract operands from the instruction word.  */
#define OP_A(i) ((i >> 4) & 0xf)
#define OP_B(i) (i & 0xf)
#define INST2OFFSET(o) ((((signed short)((o & ((1<<10)-1))<<6))>>6)<<1)
 
static const char * reg_names[16] =
  { "$fp", "$sp", "$r0", "$r1", "$r2", "$r3", "$r4", "$r5",
    "$r6", "$r7", "$r8", "$r9", "$r10", "$r11", "$r12", "$r13" };
 
int
print_insn_moxie (bfd_vma addr, struct disassemble_info * info)
{
  int length = 2;
  int status;
  stream = info->stream;
  const moxie_opc_info_t * opcode;
  bfd_byte buffer[4];
  unsigned short iword;
  fpr = info->fprintf_func;
 
  if ((status = info->read_memory_func (addr, buffer, 2, info)))
    goto fail;
  iword = bfd_getb16 (buffer);
 
  /* Form 1 instructions have the high bit set to 0.  */
  if ((iword & (1<<15)) == 0)
    {
      /* Extract the Form 1 opcode.  */
      opcode = &moxie_form1_opc_info[iword >> 8];
      switch (opcode->itype)
        {
        case MOXIE_F1_NARG:
          fpr (stream, "%s", opcode->name);
          break;
        case MOXIE_F1_A:
          fpr (stream, "%s\t%s", opcode->name,
               reg_names[OP_A(iword)]);
          break;
        case MOXIE_F1_AB:
          fpr (stream, "%s\t%s, %s", opcode->name,
               reg_names[OP_A(iword)],
               reg_names[OP_B(iword)]);
          break;
        case MOXIE_F1_A4:
          {
            unsigned imm;
            if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
              goto fail;
            imm = bfd_getb32 (buffer);
            fpr (stream, "%s\t%s, 0x%x", opcode->name,
                 reg_names[OP_A(iword)], imm);
            length = 6;
          }
          break;
        case MOXIE_F1_4:
          {
            unsigned imm;
            if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
              goto fail;
            imm = bfd_getb32 (buffer);
            fpr (stream, "%s\t0x%x", opcode->name, imm);
            length = 6;
          }
          break;
        case MOXIE_F1_M:
          {
            unsigned imm;
            if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
              goto fail;
            imm = bfd_getb32 (buffer);
            fpr (stream, "%s\t", opcode->name);
            info->print_address_func ((bfd_vma) imm, info);
            length = 6;
          }
          break;
        case MOXIE_F1_AiB:
          fpr (stream, "%s\t(%s), %s", opcode->name,
               reg_names[OP_A(iword)], reg_names[OP_B(iword)]);
          break;
        case MOXIE_F1_ABi:
          fpr (stream, "%s\t%s, (%s)", opcode->name,
               reg_names[OP_A(iword)], reg_names[OP_B(iword)]);
          break;
        case MOXIE_F1_4A:
          {
            unsigned imm;
            if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))
              goto fail;
            imm = bfd_getb32 (buffer);
            fpr (stream, "%s\t0x%x, %s",
                 opcode->name, imm, reg_names[OP_A(iword)]);
            length = 6;
          }
          break;
        case MOXIE_F1_AiB4:
          {
            unsigned imm;
            if ((status = info->read_memory_func (addr+2, buffer, 4, info)))
              goto fail;
            imm = bfd_getb32 (buffer);
            fpr (stream, "%s\t0x%x(%s), %s", opcode->name,
                 imm,
                 reg_names[OP_A(iword)],
                 reg_names[OP_B(iword)]);
            length = 6;
          }
          break;
        case MOXIE_F1_ABi4:
          {
            unsigned imm;
            if ((status = info->read_memory_func (addr+2, buffer, 4, info)))
              goto fail;
            imm = bfd_getb32 (buffer);
            fpr (stream, "%s\t%s, 0x%x(%s)",
                 opcode->name,
                 reg_names[OP_A(iword)],
                 imm,
                 reg_names[OP_B(iword)]);
            length = 6;
          }
          break;
        default:
          abort ();
        }
    }
  else if ((iword & (1<<14)) == 0)
    {
      /* Extract the Form 2 opcode.  */
      opcode = &moxie_form2_opc_info[(iword >> 12) & 3];
      switch (opcode->itype)
        {
        case MOXIE_F2_A8V:
          fpr (stream, "%s\t%s, 0x%x",
               opcode->name,
               reg_names[(iword >> 8) & 0xf],
               iword & ((1 << 8) - 1));
          break;
        case MOXIE_F2_NARG:
          fpr (stream, "%s", opcode->name);
          break;
        default:
          abort();
        }
    }
  else
    {
      /* Extract the Form 3 opcode.  */
      opcode = &moxie_form3_opc_info[(iword >> 10) & 15];
      switch (opcode->itype)
        {
        case MOXIE_F3_PCREL:
          fpr (stream, "%s\t", opcode->name);
          info->print_address_func ((bfd_vma) (addr + INST2OFFSET(iword)),
                                    info);
          break;
        default:
          abort();
        }
    }
 
  return length;
 
 fail:
  info->memory_error_func (status, addr, info);
  return -1;
}

Line No.	Rev	Author	Line
1	205	julius	`/* Disassemble moxie instructions.`
2			`Copyright 2009`
3			`Free Software Foundation, Inc.`
4
5			`This file is part of the GNU opcodes library.`
6
7			`This library is free software; you can redistribute it and/or modify`
8			`it under the terms of the GNU General Public License as published by`
9			`the Free Software Foundation; either version 3, or (at your option)`
10			`any later version.`
11
12			`It is distributed in the hope that it will be useful, but WITHOUT`
13			`ANY WARRANTY; without even the implied warranty of MERCHANTABILITY`
14			`or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public`
15			`License for more details.`
16
17			`You should have received a copy of the GNU General Public License`
18			`along with this program; if not, write to the Free Software`
19			`Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,`
20			`MA 02110-1301, USA. */`
21
22			`#include <stdio.h>`
23			`#include "sysdep.h"`
24			`#define STATIC_TABLE`
25			`#define DEFINE_TABLE`
26
27			`#include "opcode/moxie.h"`
28			`#include "dis-asm.h"`
29
30			`static fprintf_ftype fpr;`
31			`static void *stream;`
32
33			`/* Macros to extract operands from the instruction word. */`
34			`#define OP_A(i) ((i >> 4) & 0xf)`
35			`#define OP_B(i) (i & 0xf)`
36			`#define INST2OFFSET(o) ((((signed short)((o & ((1<<10)-1))<<6))>>6)<<1)`
37
38			`static const char * reg_names[16] =`
39			`{ "$fp", "$sp", "$r0", "$r1", "$r2", "$r3", "$r4", "$r5",`
40			`"$r6", "$r7", "$r8", "$r9", "$r10", "$r11", "$r12", "$r13" };`
41
42			`int`
43			`print_insn_moxie (bfd_vma addr, struct disassemble_info * info)`
44			`{`
45			`int length = 2;`
46			`int status;`
47			`stream = info->stream;`
48			`const moxie_opc_info_t * opcode;`
49			`bfd_byte buffer[4];`
50			`unsigned short iword;`
51			`fpr = info->fprintf_func;`
52
53			`if ((status = info->read_memory_func (addr, buffer, 2, info)))`
54			`goto fail;`
55			`iword = bfd_getb16 (buffer);`
56
57			`/* Form 1 instructions have the high bit set to 0. */`
58			`if ((iword & (1<<15)) == 0)`
59			`{`
60			`/* Extract the Form 1 opcode. */`
61			`opcode = &moxie_form1_opc_info[iword >> 8];`
62			`switch (opcode->itype)`
63			`{`
64			`case MOXIE_F1_NARG:`
65			`fpr (stream, "%s", opcode->name);`
66			`break;`
67			`case MOXIE_F1_A:`
68			`fpr (stream, "%s\t%s", opcode->name,`
69			`reg_names[OP_A(iword)]);`
70			`break;`
71			`case MOXIE_F1_AB:`
72			`fpr (stream, "%s\t%s, %s", opcode->name,`
73			`reg_names[OP_A(iword)],`
74			`reg_names[OP_B(iword)]);`
75			`break;`
76			`case MOXIE_F1_A4:`
77			`{`
78			`unsigned imm;`
79			`if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))`
80			`goto fail;`
81			`imm = bfd_getb32 (buffer);`
82			`fpr (stream, "%s\t%s, 0x%x", opcode->name,`
83			`reg_names[OP_A(iword)], imm);`
84			`length = 6;`
85			`}`
86			`break;`
87			`case MOXIE_F1_4:`
88			`{`
89			`unsigned imm;`
90			`if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))`
91			`goto fail;`
92			`imm = bfd_getb32 (buffer);`
93			`fpr (stream, "%s\t0x%x", opcode->name, imm);`
94			`length = 6;`
95			`}`
96			`break;`
97			`case MOXIE_F1_M:`
98			`{`
99			`unsigned imm;`
100			`if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))`
101			`goto fail;`
102			`imm = bfd_getb32 (buffer);`
103			`fpr (stream, "%s\t", opcode->name);`
104			`info->print_address_func ((bfd_vma) imm, info);`
105			`length = 6;`
106			`}`
107			`break;`
108			`case MOXIE_F1_AiB:`
109			`fpr (stream, "%s\t(%s), %s", opcode->name,`
110			`reg_names[OP_A(iword)], reg_names[OP_B(iword)]);`
111			`break;`
112			`case MOXIE_F1_ABi:`
113			`fpr (stream, "%s\t%s, (%s)", opcode->name,`
114			`reg_names[OP_A(iword)], reg_names[OP_B(iword)]);`
115			`break;`
116			`case MOXIE_F1_4A:`
117			`{`
118			`unsigned imm;`
119			`if ((status = info->read_memory_func (addr + 2, buffer, 4, info)))`
120			`goto fail;`
121			`imm = bfd_getb32 (buffer);`
122			`fpr (stream, "%s\t0x%x, %s",`
123			`opcode->name, imm, reg_names[OP_A(iword)]);`
124			`length = 6;`
125			`}`
126			`break;`
127			`case MOXIE_F1_AiB4:`
128			`{`
129			`unsigned imm;`
130			`if ((status = info->read_memory_func (addr+2, buffer, 4, info)))`
131			`goto fail;`
132			`imm = bfd_getb32 (buffer);`
133			`fpr (stream, "%s\t0x%x(%s), %s", opcode->name,`
134			`imm,`
135			`reg_names[OP_A(iword)],`
136			`reg_names[OP_B(iword)]);`
137			`length = 6;`
138			`}`
139			`break;`
140			`case MOXIE_F1_ABi4:`
141			`{`
142			`unsigned imm;`
143			`if ((status = info->read_memory_func (addr+2, buffer, 4, info)))`
144			`goto fail;`
145			`imm = bfd_getb32 (buffer);`
146			`fpr (stream, "%s\t%s, 0x%x(%s)",`
147			`opcode->name,`
148			`reg_names[OP_A(iword)],`
149			`imm,`
150			`reg_names[OP_B(iword)]);`
151			`length = 6;`
152			`}`
153			`break;`
154			`default:`
155			`abort ();`
156			`}`
157			`}`
158			`else if ((iword & (1<<14)) == 0)`
159			`{`
160			`/* Extract the Form 2 opcode. */`
161			`opcode = &moxie_form2_opc_info[(iword >> 12) & 3];`
162			`switch (opcode->itype)`
163			`{`
164			`case MOXIE_F2_A8V:`
165			`fpr (stream, "%s\t%s, 0x%x",`
166			`opcode->name,`
167			`reg_names[(iword >> 8) & 0xf],`
168			`iword & ((1 << 8) - 1));`
169			`break;`
170			`case MOXIE_F2_NARG:`
171			`fpr (stream, "%s", opcode->name);`
172			`break;`
173			`default:`
174			`abort();`
175			`}`
176			`}`
177			`else`
178			`{`
179			`/* Extract the Form 3 opcode. */`
180			`opcode = &moxie_form3_opc_info[(iword >> 10) & 15];`
181			`switch (opcode->itype)`
182			`{`
183			`case MOXIE_F3_PCREL:`
184			`fpr (stream, "%s\t", opcode->name);`
185			`info->print_address_func ((bfd_vma) (addr + INST2OFFSET(iword)),`
186			`info);`
187			`break;`
188			`default:`
189			`abort();`
190			`}`
191			`}`
192
193			`return length;`
194
195			`fail:`
196			`info->memory_error_func (status, addr, info);`
197			`return -1;`
198			`}`

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[/] [openrisc/] [trunk/] [gnu-stable/] [binutils-2.20.1/] [opcodes/] [moxie-dis.c] - Blame information for rev 855