/* Disassembler code for CR16.
- Copyright 2007, 2008, 2009, 2012 Free Software Foundation, Inc.
+ Copyright 2007, 2008, 2009, 2012, 2013 Free Software Foundation, Inc.
Contributed by M R Swami Reddy (MR.Swami.Reddy@nsc.com).
This file is part of GAS, GDB and the GNU binutils.
/* Set Bit Mask - a mask to set all bits starting from offset 'offs'. */
#define SBM(offs) ((((1 << (32 - offs)) -1) << (offs)))
-typedef unsigned long dwordU;
-typedef unsigned short wordU;
-
typedef struct
{
dwordU val;
/* Current opcode table entry we're disassembling. */
const inst *instruction;
/* Current instruction we're disassembling. */
-ins currInsn;
+ins cr16_currInsn;
/* The current instruction is read into 3 consecutive words. */
-wordU words[3];
+wordU cr16_words[3];
/* Contains all words in appropriate order. */
-ULONGLONG allWords;
+ULONGLONG cr16_allWords;
/* Holds the current processed argument number. */
int processing_argument_number;
/* Nonzero means a IMM4 instruction. */
return "ILLEGAL REGISTER";
}
-/* START and END are relating 'allWords' struct, which is 48 bits size.
+/* START and END are relating 'cr16_allWords' struct, which is 48 bits size.
START|--------|END
+---------+---------+---------+---------+
/* Search for a matching opcode. Return 1 for success, 0 for failure. */
-static int
+int
match_opcode (void)
{
unsigned long mask;
/* The instruction 'constant' opcode doewsn't exceed 32 bits. */
- unsigned long doubleWord = (words[1] + (words[0] << 16)) & 0xffffffff;
+ unsigned long doubleWord = (cr16_words[1]
+ + (cr16_words[0] << 16)) & 0xffffffff;
/* Start searching from end of instruction table. */
instruction = &cr16_instruction[NUMOPCODES - 2];
switch (a->type)
{
case arg_r:
- p = makelongparameter (allWords, inst_bit_size - (start_bits + a->size),
- inst_bit_size - start_bits);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
+ inst_bit_size - start_bits);
a->r = p.val;
break;
case arg_rp:
- p = makelongparameter (allWords, inst_bit_size - (start_bits + a->size),
- inst_bit_size - start_bits);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
+ inst_bit_size - start_bits);
a->rp = p.val;
break;
case arg_pr:
- p = makelongparameter (allWords, inst_bit_size - (start_bits + a->size),
- inst_bit_size - start_bits);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
+ inst_bit_size - start_bits);
a->pr = p.val;
break;
case arg_prp:
- p = makelongparameter (allWords, inst_bit_size - (start_bits + a->size),
- inst_bit_size - start_bits);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
+ inst_bit_size - start_bits);
a->prp = p.val;
break;
case arg_ic:
- p = makelongparameter (allWords, inst_bit_size - (start_bits + a->size),
- inst_bit_size - start_bits);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
+ inst_bit_size - start_bits);
a->constant = p.val;
break;
case arg_cc:
- p = makelongparameter (allWords, inst_bit_size - (start_bits + a->size),
- inst_bit_size - start_bits);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
+ inst_bit_size - start_bits);
a->cc = p.val;
break;
if ((IS_INSN_MNEMONIC ("cbitb"))
|| (IS_INSN_MNEMONIC ("sbitb"))
|| (IS_INSN_MNEMONIC ("tbitb")))
- p = makelongparameter (allWords, 8, 9);
+ p = makelongparameter (cr16_allWords, 8, 9);
else
- p = makelongparameter (allWords, 9, 10);
+ p = makelongparameter (cr16_allWords, 9, 10);
a->i_r = p.val;
- p = makelongparameter (allWords, inst_bit_size - a->size, inst_bit_size);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - a->size, inst_bit_size);
a->constant = p.val;
break;
case arg_idxrp:
- p = makelongparameter (allWords, start_bits + 12, start_bits + 13);
+ p = makelongparameter (cr16_allWords, start_bits + 12, start_bits + 13);
a->i_r = p.val;
- p = makelongparameter (allWords, start_bits + 13, start_bits + 16);
+ p = makelongparameter (cr16_allWords, start_bits + 13, start_bits + 16);
a->rp = p.val;
if (inst_bit_size > 32)
{
- p = makelongparameter (allWords, inst_bit_size - start_bits - 12,
+ p = makelongparameter (cr16_allWords, inst_bit_size - start_bits - 12,
inst_bit_size);
a->constant = ((p.val & 0xffff) | (p.val >> 8 & 0xf0000));
}
else if (instruction->size == 2)
{
- p = makelongparameter (allWords, inst_bit_size - 22, inst_bit_size);
+ p = makelongparameter (cr16_allWords, inst_bit_size - 22,
+ inst_bit_size);
a->constant = (p.val & 0xf) | (((p.val >>20) & 0x3) << 4)
| ((p.val >>14 & 0x3) << 6) | (((p.val >>7) & 0x1f) <<7);
}
break;
case arg_rbase:
- p = makelongparameter (allWords, inst_bit_size, inst_bit_size);
+ p = makelongparameter (cr16_allWords, inst_bit_size, inst_bit_size);
a->constant = p.val;
- p = makelongparameter (allWords, inst_bit_size - (start_bits + 4),
+ p = makelongparameter (cr16_allWords, inst_bit_size - (start_bits + 4),
inst_bit_size - start_bits);
a->r = p.val;
break;
case arg_cr:
- p = makelongparameter (allWords, start_bits + 12, start_bits + 16);
+ p = makelongparameter (cr16_allWords, start_bits + 12, start_bits + 16);
a->r = p.val;
- p = makelongparameter (allWords, inst_bit_size - 16, inst_bit_size);
+ p = makelongparameter (cr16_allWords, inst_bit_size - 16, inst_bit_size);
a->constant = p.val;
break;
case arg_crp:
if (instruction->size == 1)
- p = makelongparameter (allWords, 12, 16);
+ p = makelongparameter (cr16_allWords, 12, 16);
else
- p = makelongparameter (allWords, start_bits + 12, start_bits + 16);
+ p = makelongparameter (cr16_allWords, start_bits + 12, start_bits + 16);
a->rp = p.val;
if (inst_bit_size > 32)
{
- p = makelongparameter (allWords, inst_bit_size - start_bits - 12,
+ p = makelongparameter (cr16_allWords, inst_bit_size - start_bits - 12,
inst_bit_size);
a->constant = ((p.val & 0xffff) | (p.val >> 8 & 0xf0000));
}
else if (instruction->size == 2)
{
- p = makelongparameter (allWords, inst_bit_size - 16, inst_bit_size);
+ p = makelongparameter (cr16_allWords, inst_bit_size - 16,
+ inst_bit_size);
a->constant = p.val;
}
else if (instruction->size == 1 && a->size != 0)
{
- p = makelongparameter (allWords, 4, 8);
+ p = makelongparameter (cr16_allWords, 4, 8);
if (IS_INSN_MNEMONIC ("loadw")
|| IS_INSN_MNEMONIC ("loadd")
|| IS_INSN_MNEMONIC ("storw")
switch (a->size)
{
case 8 :
- p = makelongparameter (allWords, 0, start_bits);
+ p = makelongparameter (cr16_allWords, 0, start_bits);
a->constant = ((((p.val&0xf00)>>4)) | (p.val&0xf));
break;
case 24:
if (instruction->size == 3)
{
- p = makelongparameter (allWords, 16, inst_bit_size);
+ p = makelongparameter (cr16_allWords, 16, inst_bit_size);
a->constant = ((((p.val>>16)&0xf) << 20)
| (((p.val>>24)&0xf) << 16)
| (p.val & 0xffff));
}
else if (instruction->size == 2)
{
- p = makelongparameter (allWords, 8, inst_bit_size);
+ p = makelongparameter (cr16_allWords, 8, inst_bit_size);
a->constant = p.val;
}
break;
default:
- p = makelongparameter (allWords, inst_bit_size - (start_bits +
- a->size), inst_bit_size - start_bits);
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
+ inst_bit_size - start_bits);
a->constant = p.val;
break;
}
}
else
{
- p = makelongparameter (allWords, inst_bit_size -
- (start_bits + a->size),
+ p = makelongparameter (cr16_allWords,
+ inst_bit_size - (start_bits + a->size),
inst_bit_size - start_bits);
a->constant = p.val;
}
/* Build the instruction's arguments. */
-static void
+void
make_instruction (void)
{
int i;
unsigned int shift;
- for (i = 0; i < currInsn.nargs; i++)
+ for (i = 0; i < cr16_currInsn.nargs; i++)
{
argument a;
shift = instruction->operands[i].shift;
make_argument (&a, shift);
- currInsn.arg[i] = a;
+ cr16_currInsn.arg[i] = a;
}
/* Calculate instruction size (in bytes). */
- currInsn.size = instruction->size + (size_changed ? 1 : 0);
+ cr16_currInsn.size = instruction->size + (size_changed ? 1 : 0);
/* Now in bits. */
- currInsn.size *= 2;
+ cr16_currInsn.size *= 2;
}
/* Retrieve a single word from a given memory address. */
bfd_vma mem;
for (i = 0, mem = memaddr; i < 3; i++, mem += 2)
- words[i] = get_word_at_PC (mem, info);
+ cr16_words[i] = get_word_at_PC (mem, info);
- allWords =
- ((ULONGLONG) words[0] << 32) + ((unsigned long) words[1] << 16) + words[2];
+ cr16_allWords = ((ULONGLONG) cr16_words[0] << 32)
+ + ((unsigned long) cr16_words[1] << 16) + cr16_words[2];
}
/* Prints the instruction by calling print_arguments after proper matching. */
/* Find a matching opcode in table. */
is_decoded = match_opcode ();
/* If found, print the instruction's mnemonic and arguments. */
- if (is_decoded > 0 && (words[0] << 16 || words[1]) != 0)
+ if (is_decoded > 0 && (cr16_words[0] << 16 || cr16_words[1]) != 0)
{
if (strneq (instruction->mnemonic, "cinv", 4))
info->fprintf_func (info->stream,"%s", getcinvstring (instruction->mnemonic));
else
info->fprintf_func (info->stream, "%s", instruction->mnemonic);
- if (((currInsn.nargs = get_number_of_operands ()) != 0)
+ if (((cr16_currInsn.nargs = get_number_of_operands ()) != 0)
&& ! (IS_INSN_MNEMONIC ("b")))
info->fprintf_func (info->stream, "\t");
make_instruction ();
/* For push/pop/pushrtn with RA instructions. */
- if ((INST_HAS_REG_LIST) && ((words[0] >> 7) & 0x1))
- currInsn.nargs +=1;
- print_arguments (&currInsn, memaddr, info);
- return currInsn.size;
+ if ((INST_HAS_REG_LIST) && ((cr16_words[0] >> 7) & 0x1))
+ cr16_currInsn.nargs +=1;
+ print_arguments (&cr16_currInsn, memaddr, info);
+ return cr16_currInsn.size;
}
/* No match found. */
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