#include "sysdep.h"
#include "dis-asm.h"
#include "opcode/a29k.h"
static void
print_general (int num, struct disassemble_info *info)
{
if (num < 128)
(*info->fprintf_func) (info->stream, "gr%d", num);
else
(*info->fprintf_func) (info->stream, "lr%d", num - 128);
}
static void
print_special (unsigned int num, struct disassemble_info *info)
{
static char *spec0_names[] =
{
"vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr",
"pc0", "pc1", "pc2", "mmu", "lru", "rsn", "rma0", "rmc0", "rma1", "rmc1",
"spc0", "spc1", "spc2", "iba0", "ibc0", "iba1", "ibc1", "dba", "dbc",
"cir", "cdr"
};
#define SPEC0_NUM ((sizeof spec0_names) / (sizeof spec0_names[0]))
static char *spec128_names[] =
{
"ipc", "ipa", "ipb", "q", "alu", "bp", "fc", "cr"
};
#define SPEC128_NUM ((sizeof spec128_names) / (sizeof spec128_names[0]))
static char *spec160_names[] =
{
"fpe", "inte", "fps", "sr163", "exop"
};
#define SPEC160_NUM ((sizeof spec160_names) / (sizeof spec160_names[0]))
if (num < SPEC0_NUM)
(*info->fprintf_func) (info->stream, spec0_names[num]);
else if (num >= 128 && num < 128 + SPEC128_NUM)
(*info->fprintf_func) (info->stream, spec128_names[num-128]);
else if (num >= 160 && num < 160 + SPEC160_NUM)
(*info->fprintf_func) (info->stream, spec160_names[num-160]);
else
(*info->fprintf_func) (info->stream, "sr%d", num);
}
static int
is_delayed_branch (int opcode)
{
return (opcode == 0xa8 || opcode == 0xa9 || opcode == 0xa0 || opcode == 0xa1
|| opcode == 0xa4 || opcode == 0xa5
|| opcode == 0xb4 || opcode == 0xb5
|| opcode == 0xc4 || opcode == 0xc0
|| opcode == 0xac || opcode == 0xad
|| opcode == 0xcc);
}
static void
find_bytes_big (char *insn,
unsigned char *insn0,
unsigned char *insn8,
unsigned char *insn16,
unsigned char *insn24)
{
*insn24 = insn[0];
*insn16 = insn[1];
*insn8 = insn[2];
*insn0 = insn[3];
}
static void
find_bytes_little (char *insn,
unsigned char *insn0,
unsigned char *insn8,
unsigned char *insn16,
unsigned char *insn24)
{
*insn24 = insn[3];
*insn16 = insn[2];
*insn8 = insn[1];
*insn0 = insn[0];
}
typedef void (*find_byte_func_type)
(char *, unsigned char *, unsigned char *,
unsigned char *, unsigned char *);
static int
print_insn (bfd_vma memaddr, struct disassemble_info *info)
{
char insn[4];
unsigned char insn24, insn16, insn8, insn0;
find_byte_func_type find_byte_func = (find_byte_func_type)info->private_data;
struct a29k_opcode const * opcode;
{
int status =
(*info->read_memory_func) (memaddr, (bfd_byte *) &insn[0], 4, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
}
(*find_byte_func) (insn, &insn0, &insn8, &insn16, &insn24);
printf ("%02x%02x%02x%02x ", insn24, insn16, insn8, insn0);
if ( (insn24 == 0x70)
&& (insn16 == 0x40)
&& (insn8 == 0x01)
&& (insn0 == 0x01))
{
(*info->fprintf_func) (info->stream,"nop");
return 4;
}
for (opcode = &a29k_opcodes[0];
opcode < &a29k_opcodes[num_opcodes];
++opcode)
{
if (((unsigned long) insn24 << 24) == opcode->opcode)
{
char *s;
(*info->fprintf_func) (info->stream, "%s ", opcode->name);
for (s = opcode->args; *s != '\0'; ++s)
{
switch (*s)
{
case 'a':
print_general (insn8, info);
break;
case 'b':
print_general (insn0, info);
break;
case 'c':
print_general (insn16, info);
break;
case 'i':
(*info->fprintf_func) (info->stream, "%d", insn0);
break;
case 'x':
(*info->fprintf_func) (info->stream, "0x%x",
(insn16 << 8) + insn0);
break;
case 'h':
(*info->fprintf_func) (info->stream, "0x%x",
(insn16 << 24) + (insn0 << 16));
break;
case 'X':
(*info->fprintf_func) (info->stream, "%d",
((insn16 << 8) + insn0) | 0xffff0000);
break;
case 'P':
(*info->print_address_func)
(memaddr +
(((int)((insn16 << 10) + (insn0 << 2)) << 14) >> 14),
info);
break;
case 'A':
(*info->print_address_func)
((insn16 << 10) + (insn0 << 2), info);
break;
case 'e':
(*info->fprintf_func) (info->stream, "%d", insn16 >> 7);
break;
case 'n':
(*info->fprintf_func) (info->stream, "0x%x", insn16 & 0x7f);
break;
case 'v':
(*info->fprintf_func) (info->stream, "0x%x", insn16);
break;
case 's':
print_special (insn8, info);
break;
case 'u':
(*info->fprintf_func) (info->stream, "%d", insn0 >> 7);
break;
case 'r':
(*info->fprintf_func) (info->stream, "%d", (insn0 >> 4) & 7);
break;
case 'I':
if ((insn16 & 3) != 0)
(*info->fprintf_func) (info->stream, "%d", insn16 & 3);
break;
case 'd':
(*info->fprintf_func) (info->stream, "%d", (insn0 >> 2) & 3);
break;
case 'f':
(*info->fprintf_func) (info->stream, "%d", insn0 & 3);
break;
case 'F':
(*info->fprintf_func) (info->stream, "%d",
(insn16 >> 2) & 15);
break;
case 'C':
(*info->fprintf_func) (info->stream, "%d", insn16 & 3);
break;
default:
(*info->fprintf_func) (info->stream, "%c", *s);
}
}
if (insn24 == 2)
{
int errcode;
char prev_insn[4];
unsigned char prev_insn0, prev_insn8, prev_insn16, prev_insn24;
errcode = (*info->read_memory_func) (memaddr - 4,
(bfd_byte *) &prev_insn[0],
4,
info);
if (errcode == 0)
{
(*find_byte_func) (prev_insn, & prev_insn0, & prev_insn8,
& prev_insn16, & prev_insn24);
if (is_delayed_branch (prev_insn24))
{
errcode = (*info->read_memory_func)
(memaddr - 8, (bfd_byte *) & prev_insn[0], 4, info);
(*find_byte_func) (prev_insn, & prev_insn0, & prev_insn8,
& prev_insn16, & prev_insn24);
}
}
if (errcode == 0)
{
if (prev_insn24 == 3
&& prev_insn8 == insn8)
{
(*info->fprintf_func) (info->stream, "\t; ");
(*info->print_address_func)
(((insn16 << 24) + (insn0 << 16)
+ (prev_insn16 << 8) + (prev_insn0)),
info);
}
}
}
return 4;
}
}
(*info->fprintf_func)
(info->stream, ".word 0x%08x",
(insn24 << 24) + (insn16 << 16) + (insn8 << 8) + insn0);
return 4;
}
int
print_insn_big_a29k (bfd_vma memaddr, struct disassemble_info *info)
{
info->private_data = (PTR) find_bytes_big;
return print_insn (memaddr, info);
}
int
print_insn_little_a29k (bfd_vma memaddr, struct disassemble_info *info)
{
info->private_data = (PTR) find_bytes_little;
return print_insn (memaddr, info);
}