/* Disassemble D10V instructions.
- Copyright (C) 1996 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998 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/d10v.h"
#include "dis-asm.h"
-static void dis_2_short PARAMS ((unsigned long insn, char *str, int order));
-static void dis_long PARAMS ((unsigned long insn, char *str));
+/* the PC wraps at 18 bits, except for the segment number */
+/* so use this mask to keep the parts we want */
+#define PC_MASK 0x0303FFFF
+
+static void dis_2_short PARAMS ((unsigned long insn, bfd_vma memaddr,
+ struct disassemble_info *info, int order));
+static void dis_long PARAMS ((unsigned long insn, bfd_vma memaddr,
+ struct disassemble_info *info));
int
print_insn_d10v (memaddr, info)
int status;
bfd_byte buffer[4];
unsigned long insn;
- char str[64];
-
- strcpy (str, "unknown");
status = (*info->read_memory_func) (memaddr, buffer, 4, info);
if (status != 0)
status = insn & FM11;
switch (status) {
case 0:
- dis_2_short (insn, str, 2);
+ dis_2_short (insn, memaddr, info, 2);
break;
case FM01:
- dis_2_short (insn, str, 0);
+ dis_2_short (insn, memaddr, info, 0);
break;
case FM10:
- dis_2_short (insn, str, 1);
+ dis_2_short (insn, memaddr, info, 1);
break;
case FM11:
- dis_long (insn, str);
+ dis_long (insn, memaddr, info);
break;
}
- (*info->fprintf_func) (info->stream, "\t%s", str, insn);
return 4;
}
static void
-print_operand (buf, oper, insn, op)
- char *buf;
+print_operand (oper, insn, op, memaddr, info)
struct d10v_operand *oper;
unsigned long insn;
struct d10v_opcode *op;
+ bfd_vma memaddr;
+ struct disassemble_info *info;
{
int num, shift;
if (oper->flags == OPERAND_ATMINUS)
{
- strcpy (buf,"@-");
+ (*info->fprintf_func) (info->stream, "@-");
return;
}
if (oper->flags == OPERAND_MINUS)
{
- strcpy (buf,"-");
+ (*info->fprintf_func) (info->stream, "-");
return;
}
if (oper->flags == OPERAND_PLUS)
{
- strcpy (buf,"+");
+ (*info->fprintf_func) (info->stream, "+");
return;
}
if (oper->flags == OPERAND_ATSIGN)
{
- strcpy (buf,"@");
+ (*info->fprintf_func) (info->stream, "@");
return;
}
if (oper->flags == OPERAND_ATPAR)
{
- strcpy (buf,"@(");
+ (*info->fprintf_func) (info->stream, "@(");
return;
}
{
int i;
int match=0;
- num += oper->flags & (OPERAND_ACC|OPERAND_FLAG|OPERAND_CONTROL);
- for (i=0;i<reg_name_cnt();i++)
+ num += (oper->flags
+ & (OPERAND_GPR|OPERAND_FFLAG|OPERAND_CFLAG|OPERAND_CONTROL));
+ if (oper->flags & (OPERAND_ACC0|OPERAND_ACC1))
+ num += num ? OPERAND_ACC1 : OPERAND_ACC0;
+ for (i = 0; i < d10v_reg_name_cnt(); i++)
{
- if (num == pre_defined_registers[i].value)
+ if (num == d10v_predefined_registers[i].value)
{
- if (pre_defined_registers[i].pname)
- strcpy(buf,pre_defined_registers[i].pname);
+ if (d10v_predefined_registers[i].pname)
+ (*info->fprintf_func) (info->stream, "%s",d10v_predefined_registers[i].pname);
else
- strcpy(buf,pre_defined_registers[i].name);
+ (*info->fprintf_func) (info->stream, "%s",d10v_predefined_registers[i].name);
match=1;
break;
}
}
- if (match==0)
+ if (match == 0)
{
- if (oper->flags & OPERAND_ACC)
- *buf++ = 'a';
+ /* this would only get executed if a register was not in the
+ register table */
+ if (oper->flags & (OPERAND_ACC0|OPERAND_ACC1))
+ (*info->fprintf_func) (info->stream, "a");
else if (oper->flags & OPERAND_CONTROL)
- {
- *buf++ ='c';
- *buf++ ='r';
- }
+ (*info->fprintf_func) (info->stream, "cr");
else if(oper->flags & OPERAND_REG)
- *buf++ = 'r';
- sprintf (buf, "%d", num);
+ (*info->fprintf_func) (info->stream, "r");
+ (*info->fprintf_func) (info->stream, "%d",num);
}
}
else
- sprintf (buf, "0x%x", num);
+ {
+ /* addresses are right-shifted by 2 */
+ if (oper->flags & OPERAND_ADDR)
+ {
+ long max;
+ int neg=0;
+ max = (1 << (oper->bits - 1));
+ if (num & max)
+ {
+ num = -num & ((1 << oper->bits)-1);
+ neg = 1;
+ }
+ num = num<<2;
+ if (info->flags & INSN_HAS_RELOC)
+ (*info->print_address_func) (num & PC_MASK, info);
+ else
+ {
+ if (neg)
+ (*info->print_address_func) ((memaddr - num) & PC_MASK, info);
+ else
+ (*info->print_address_func) ((memaddr + num) & PC_MASK, info);
+ }
+ }
+ else
+ {
+ if (oper->flags & OPERAND_SIGNED)
+ {
+ int max = (1 << (oper->bits - 1));
+ if (num & max)
+ {
+ num = -num & ((1 << oper->bits)-1);
+ (*info->fprintf_func) (info->stream, "-");
+ }
+ }
+ (*info->fprintf_func) (info->stream, "0x%x",num);
+ }
+ }
}
static void
-dis_long (insn, str)
+dis_long (insn, memaddr, info)
unsigned long insn;
- char *str;
+ bfd_vma memaddr;
+ struct disassemble_info *info;
{
int i;
char buf[32];
struct d10v_opcode *op = (struct d10v_opcode *)d10v_opcodes;
struct d10v_operand *oper;
int need_paren = 0;
+ int match = 0;
while (op->name)
{
if ((op->format & LONG_OPCODE) && ((op->mask & insn) == op->opcode))
{
- strcpy (str, op->name);
- strcat (str, "\t");
+ match = 1;
+ (*info->fprintf_func) (info->stream, "%s\t", op->name);
for ( i=0; op->operands[i]; i++)
{
oper = (struct d10v_operand *)&d10v_operands[op->operands[i]];
if (oper->flags == OPERAND_ATPAR)
need_paren = 1;
- print_operand (buf, oper, insn, op);
- strcat (str, buf);
+ print_operand (oper, insn, op, memaddr, info);
if (op->operands[i+1] && oper->bits &&
d10v_operands[op->operands[i+1]].flags != OPERAND_PLUS &&
d10v_operands[op->operands[i+1]].flags != OPERAND_MINUS)
- strcat (str,", ");
+ (*info->fprintf_func) (info->stream, ", ");
}
break;
}
op++;
}
+
+ if (!match)
+ (*info->fprintf_func) (info->stream, ".long\t0x%08x",insn);
+
if (need_paren)
- strcat (str, ")");
+ (*info->fprintf_func) (info->stream, ")");
}
static void
-dis_2_short (insn, str, order)
+dis_2_short (insn, memaddr, info, order)
unsigned long insn;
- char *str;
+ bfd_vma memaddr;
+ struct disassemble_info *info;
int order;
{
int i,j;
ins[0] = (insn & 0x3FFFFFFF) >> 15;
ins[1] = insn & 0x00007FFF;
- *str = 0;
-
for(j=0;j<2;j++)
{
op = (struct d10v_opcode *)d10v_opcodes;
{
if ((op->format & SHORT_OPCODE) && ((op->mask & ins[j]) == op->opcode))
{
- strcat (str, op->name);
- strcat (str, "\t");
+ (*info->fprintf_func) (info->stream, "%s\t",op->name);
for (i=0; op->operands[i]; i++)
{
oper = (struct d10v_operand *)&d10v_operands[op->operands[i]];
if (oper->flags == OPERAND_ATPAR)
need_paren = 1;
- print_operand (buf, oper, ins[j], op);
- strcat (str, buf);
+ print_operand (oper, ins[j], op, memaddr, info);
if (op->operands[i+1] && oper->bits &&
d10v_operands[op->operands[i+1]].flags != OPERAND_PLUS &&
d10v_operands[op->operands[i+1]].flags != OPERAND_MINUS)
- strcat( str,", ");
+ (*info->fprintf_func) (info->stream, ", ");
}
match = 1;
num_match++;
op++;
}
if (!match)
- strcat (str, "unknown");
+ (*info->fprintf_func) (info->stream, "unknown");
switch (order)
{
case 0:
- strcat ( str, "\t->\t");
+ (*info->fprintf_func) (info->stream, "\t->\t");
order = -1;
break;
case 1:
- strcat (str, "\t<-\t");
+ (*info->fprintf_func) (info->stream, "\t<-\t");
order = -1;
break;
case 2:
- strcat (str, "\t||\t");
+ (*info->fprintf_func) (info->stream, "\t||\t");
order = -1;
break;
default:
}
if (num_match == 0)
- sprintf (str, ".long\t0x%08x", insn);
+ (*info->fprintf_func) (info->stream, ".long\t0x%08x",insn);
if (need_paren)
- strcat (str, ")");
+ (*info->fprintf_func) (info->stream, ")");
}
projects / deliverable / binutils-gdb.git / blobdiff