/* Disassemble D30V instructions.
- Copyright 1997, 1998, 2000 Free Software Foundation, Inc.
+ Copyright 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <stdio.h>
#include "sysdep.h"
-#include "opcode/d30v.h"
+#include "opcode/d30v.h"
#include "dis-asm.h"
#include "opintl.h"
#define PC_MASK 0xFFFFFFFF
-static int lookup_opcode PARAMS (( struct d30v_insn *insn, long num, int is_long ));
-static void print_insn PARAMS (( struct disassemble_info *info, bfd_vma memaddr, long long num,
- struct d30v_insn *insn, int is_long, int show_ext ));
-static int extract_value PARAMS (( long long num, struct d30v_operand *oper, int is_long ));
+static int lookup_opcode PARAMS ((struct d30v_insn *insn, long num, int is_long));
+static void print_insn PARAMS ((struct disassemble_info *info, bfd_vma memaddr, long long num,
+ struct d30v_insn *insn, int is_long, int show_ext));
+static int extract_value PARAMS ((long long num, struct d30v_operand *oper, int is_long));
-int
+int
print_insn_d30v (memaddr, info)
bfd_vma memaddr;
struct disassemble_info *info;
{
int status, result;
bfd_byte buffer[12];
- unsigned long in1,in2;
+ unsigned long in1, in2;
struct d30v_insn insn;
long long num;
- insn.form = (struct d30v_format *)NULL;
+ insn.form = (struct d30v_format *) NULL;
info->bytes_per_line = 8;
info->bytes_per_chunk = 4;
}
in1 = bfd_getb32 (buffer);
- status = (*info->read_memory_func) (memaddr+4, buffer, 4, info);
+ status = (*info->read_memory_func) (memaddr + 4, buffer, 4, info);
if (status != 0)
{
info->bytes_per_line = 8;
- if (!(result = lookup_opcode(&insn, in1, 0)))
- (*info->fprintf_func) (info->stream, ".long\t0x%x",in1);
+ if (!(result = lookup_opcode (&insn, in1, 0)))
+ (*info->fprintf_func) (info->stream, ".long\t0x%x", in1);
else
- print_insn(info, memaddr, (long long) in1, &insn, 0, result);
- return 4;
+ print_insn (info, memaddr, (long long) in1, &insn, 0, result);
+ return 4;
}
in2 = bfd_getb32 (buffer);
-
+
if (in1 & in2 & FM01)
{
- /* LONG instruction */
- if (!(result = lookup_opcode(&insn, in1, 1)))
+ /* LONG instruction. */
+ if (!(result = lookup_opcode (&insn, in1, 1)))
{
- (*info->fprintf_func) (info->stream, ".long\t0x%x,0x%x",in1,in2);
+ (*info->fprintf_func) (info->stream, ".long\t0x%x,0x%x", in1, in2);
return 8;
}
- num = (long long)in1 << 32 | in2;
- print_insn(info, memaddr, num, &insn, 1, result);
+ num = (long long) in1 << 32 | in2;
+ print_insn (info, memaddr, num, &insn, 1, result);
}
else
{
num = in1;
- if (!(result = lookup_opcode(&insn, in1, 0)))
- (*info->fprintf_func) (info->stream, ".long\t0x%x",in1);
+ if (!(result = lookup_opcode (&insn, in1, 0)))
+ (*info->fprintf_func) (info->stream, ".long\t0x%x", in1);
else
- print_insn(info, memaddr, num, &insn, 0, result);
-
- switch ( ((in1>>31)<<1) | (in2>>31) )
+ print_insn (info, memaddr, num, &insn, 0, result);
+
+ switch (((in1 >> 31) << 1) | (in2 >> 31))
{
case 0:
- (*info->fprintf_func) (info->stream, "\t||\t");
+ (*info->fprintf_func) (info->stream, "\t||\t");
break;
case 1:
- (*info->fprintf_func) (info->stream, "\t->\t");
+ (*info->fprintf_func) (info->stream, "\t->\t");
break;
case 2:
- (*info->fprintf_func) (info->stream, "\t<-\t");
+ (*info->fprintf_func) (info->stream, "\t<-\t");
default:
break;
}
-
- insn.form = (struct d30v_format *)NULL;
+
+ insn.form = (struct d30v_format *) NULL;
num = in2;
- if (!(result = lookup_opcode(&insn, in2, 0)))
- (*info->fprintf_func) (info->stream, ".long\t0x%x",in2);
+ if (!(result = lookup_opcode (&insn, in2, 0)))
+ (*info->fprintf_func) (info->stream, ".long\t0x%x", in2);
else
- print_insn(info, memaddr, num, &insn, 0, result);
-
+ print_insn (info, memaddr, num, &insn, 0, result);
}
return 8;
}
+/* Return 0 if lookup fails,
+ 1 if found and only one form,
+ 2 if found and there are short and long forms. */
-/* returns 0 if lookup fails */
-/* 1 if found and only one form */
-/* 2 if found and there are short and long forms */
static int
lookup_opcode (insn, num, is_long)
struct d30v_insn *insn;
long num;
int is_long;
{
- int i=0, index;
+ int i = 0, index;
struct d30v_format *f;
- struct d30v_opcode *op = (struct d30v_opcode *)d30v_opcode_table;
+ struct d30v_opcode *op = (struct d30v_opcode *) d30v_opcode_table;
int op1 = (num >> 25) & 0x7;
int op2 = (num >> 20) & 0x1f;
int mod = (num >> 18) & 0x3;
- /* find the opcode */
- do {
- if ((op->op1 == op1) && (op->op2 == op2))
- break;
- op++;
- } while (op->name);
+ /* Find the opcode. */
+ do
+ {
+ if ((op->op1 == op1) && (op->op2 == op2))
+ break;
+ op++;
+ }
+ while (op->name);
if (!op || !op->name)
return 0;
while (op->op1 == op1 && op->op2 == op2)
{
- /* scan through all the formats for the opcode */
+ /* Scan through all the formats for the opcode. */
index = op->format[i++];
- do
+ do
{
- f = (struct d30v_format *)&d30v_format_table[index];
+ f = (struct d30v_format *) &d30v_format_table[index];
while (f->form == index)
{
if ((!is_long || f->form >= LONG) && (f->modifier == mod))
}
if (insn->form)
break;
- } while ((index = op->format[i++]) != 0);
+ }
+ while ((index = op->format[i++]) != 0);
if (insn->form)
break;
op++;
- i=0;
+ i = 0;
}
if (insn->form == NULL)
return 0;
return 1;
}
-
-static void
-print_insn ( info, memaddr, num, insn, is_long, show_ext )
+static void
+print_insn (info, memaddr, num, insn, is_long, show_ext)
struct disassemble_info *info;
bfd_vma memaddr;
long long num;
int is_long;
int show_ext;
{
- int val, opnum, need_comma=0;
+ int val, opnum, need_comma = 0;
struct d30v_operand *oper;
- int i, match, opind=0, need_paren=0, found_control=0;
+ int i, match, opind = 0, need_paren = 0, found_control = 0;
- (*info->fprintf_func) (info->stream, "%s",insn->op->name);
+ (*info->fprintf_func) (info->stream, "%s", insn->op->name);
- /* check for CMP or CMPU */
+ /* Check for CMP or CMPU. */
if (d30v_operand_table[insn->form->operands[0]].flags & OPERAND_NAME)
{
opind++;
- val = extract_value(num,(struct d30v_operand *)&d30v_operand_table[insn->form->operands[0]],is_long);
- (*info->fprintf_func) (info->stream, "%s",d30v_cc_names[val]);
+ val =
+ extract_value (num,
+ (struct d30v_operand *) &d30v_operand_table[insn->form->operands[0]],
+ is_long);
+ (*info->fprintf_func) (info->stream, "%s", d30v_cc_names[val]);
}
- /* add in ".s" or ".l" */
+ /* Add in ".s" or ".l". */
if (show_ext == 2)
{
if (is_long)
}
if (insn->ecc)
- (*info->fprintf_func) (info->stream, "/%s",d30v_ecc_names[insn->ecc]);
+ (*info->fprintf_func) (info->stream, "/%s", d30v_ecc_names[insn->ecc]);
(*info->fprintf_func) (info->stream, "\t");
while ((opnum = insn->form->operands[opind++]) != 0)
{
int bits;
- oper = (struct d30v_operand *)&d30v_operand_table[opnum];
+ oper = (struct d30v_operand *) &d30v_operand_table[opnum];
bits = oper->bits;
if (oper->flags & OPERAND_SHIFT)
bits += 3;
- if (need_comma && oper->flags != OPERAND_PLUS && oper->flags != OPERAND_MINUS)
+ if (need_comma
+ && oper->flags != OPERAND_PLUS
+ && oper->flags != OPERAND_MINUS)
{
- need_comma=0;
+ need_comma = 0;
(*info->fprintf_func) (info->stream, ", ");
}
}
if (oper->flags == OPERAND_MINUS)
{
- (*info->fprintf_func) (info->stream, "-");
+ (*info->fprintf_func) (info->stream, "-");
continue;
}
if (oper->flags == OPERAND_PLUS)
{
- (*info->fprintf_func) (info->stream, "+");
+ (*info->fprintf_func) (info->stream, "+");
continue;
}
if (oper->flags == OPERAND_ATSIGN)
{
- (*info->fprintf_func) (info->stream, "@");
+ (*info->fprintf_func) (info->stream, "@");
continue;
}
if (oper->flags == OPERAND_ATPAR)
{
- (*info->fprintf_func) (info->stream, "@(");
+ (*info->fprintf_func) (info->stream, "@(");
need_paren = 1;
continue;
}
if (oper->flags == OPERAND_SPECIAL)
continue;
- val = extract_value(num, oper, is_long);
-
+ val = extract_value (num, oper, is_long);
+
if (oper->flags & OPERAND_REG)
{
match = 0;
if (oper->flags & OPERAND_CONTROL)
{
- struct d30v_operand *oper3 =
- (struct d30v_operand *)&d30v_operand_table[insn->form->operands[2]];
- int id = extract_value (num, oper3, is_long );
+ struct d30v_operand *oper3 =
+ (struct d30v_operand *) &d30v_operand_table[insn->form->operands[2]];
+ int id = extract_value (num, oper3, is_long);
found_control = 1;
- switch ( id )
+ switch (id)
{
case 0:
val |= OPERAND_CONTROL;
val |= OPERAND_FLAG;
break;
default:
- fprintf(stderr,"illegal id (%d)\n",id);
+ fprintf (stderr, "illegal id (%d)\n", id);
}
}
else if (oper->flags & OPERAND_ACC)
val |= OPERAND_ACC;
else if (oper->flags & OPERAND_FLAG)
val |= OPERAND_FLAG;
- for (i=0;i<reg_name_cnt();i++)
+ for (i = 0; i < reg_name_cnt (); i++)
{
if (val == pre_defined_registers[i].value)
{
if (pre_defined_registers[i].pname)
(*info->fprintf_func)
- (info->stream, "%s",pre_defined_registers[i].pname);
+ (info->stream, "%s", pre_defined_registers[i].pname);
else
(*info->fprintf_func)
- (info->stream, "%s",pre_defined_registers[i].name);
- match=1;
+ (info->stream, "%s", pre_defined_registers[i].name);
+ match = 1;
break;
}
}
- if (match==0)
+ if (match == 0)
{
- /* this would only get executed if a register was not in the
- register table */
+ /* This would only get executed if a register was not in
+ the register table. */
(*info->fprintf_func)
- (info->stream, _("<unknown register %d>"), val & 0x3F);
+ (info->stream, _("<unknown register %d>"), val & 0x3F);
}
}
/* repeati has a relocation, but its first argument is a plain
else if (oper->flags & OPERAND_PCREL)
{
int neg = 0;
-
+
/* IMM6S3 is unsigned. */
if (oper->flags & OPERAND_SIGNED || bits == 32)
{
if (bits == 32)
val = -val;
else
- val = -val & ((1 << bits)-1);
+ val = -val & ((1 << bits) - 1);
neg = 1;
}
}
if (neg)
{
- (*info->fprintf_func) (info->stream, "-%x\t(",val);
+ (*info->fprintf_func) (info->stream, "-%x\t(", val);
(*info->print_address_func) ((memaddr - val) & PC_MASK, info);
(*info->fprintf_func) (info->stream, ")");
}
else
{
- (*info->fprintf_func) (info->stream, "%x\t(",val);
+ (*info->fprintf_func) (info->stream, "%x\t(", val);
(*info->print_address_func) ((memaddr + val) & PC_MASK, info);
(*info->fprintf_func) (info->stream, ")");
}
(*info->fprintf_func) (info->stream, "-");
}
}
- (*info->fprintf_func) (info->stream, "0x%x",val);
+ (*info->fprintf_func) (info->stream, "0x%x", val);
}
- /* if there is another operand, then write a comma and space */
+ /* If there is another operand, then write a comma and space. */
if (insn->form->operands[opind] && !(found_control && opind == 2))
need_comma = 1;
}
(*info->fprintf_func) (info->stream, ")");
}
-
-
static int
extract_value (num, oper, is_long)
long long num;
if (is_long)
{
- if (oper->bits == 32)
+ if (oper->bits == 32)
{
- /* piece together 32-bit constant */
+ /* Piece together 32-bit constant. */
val = ((num & 0x3FFFF)
| ((num & 0xFF00000) >> 2)
| ((num & 0x3F00000000LL) >> 6));
}
- else
- val = (num >> (32 + shift)) & mask;
+ else
+ val = (num >> (32 + shift)) & mask;
}
else
val = (num >> shift) & mask;
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