#include <stdio.h>
#include "sysdep.h"
#include "dis-asm.h"
#include "opcode/i370.h"
int
print_insn_i370 (memaddr, info)
bfd_vma memaddr;
struct disassemble_info *info;
{
bfd_byte buffer[8];
int status;
i370_insn_t insn;
const struct i370_opcode *opcode;
const struct i370_opcode *opcode_end;
status = (*info->read_memory_func) (memaddr, buffer, 6, info);
if (status != 0)
{
(*info->memory_error_func) (status, memaddr, info);
return -1;
}
insn.i[0] = (buffer[0] << 24) & 0xff000000;
insn.i[0] |= (buffer[1] << 16) & 0xff0000;
insn.i[0] |= (buffer[2] << 8) & 0xff00;
insn.i[0] |= buffer[3] & 0xff;
insn.i[1] = (buffer[4] << 24) & 0xff000000;
insn.i[1] |= (buffer[5] << 16) & 0xff0000;
opcode_end = i370_opcodes + i370_num_opcodes;
for (opcode = i370_opcodes; opcode < opcode_end; opcode++)
{
const unsigned char *opindex;
const struct i370_operand *operand;
i370_insn_t masked;
int invalid;
masked = insn;
if (2 == opcode->len)
{
masked.i[0] >>= 16;
masked.i[0] &= 0xffff;
}
masked.i[0] &= opcode->mask.i[0];
if (masked.i[0] != opcode->opcode.i[0]) continue;
if (6 == opcode->len)
{
masked.i[1] &= opcode->mask.i[1];
if (masked.i[1] != opcode->opcode.i[1]) continue;
}
if (2 == opcode->len)
{
insn.i[0] >>= 16;
insn.i[0] &= 0xffff;
}
invalid = 0;
for (opindex = opcode->operands; *opindex != 0; opindex++)
{
operand = i370_operands + *opindex;
if (operand->extract)
(*operand->extract) (insn, &invalid);
}
if (invalid) continue;
(*info->fprintf_func) (info->stream, "%s", opcode->name);
if (opcode->operands[0] != 0)
(*info->fprintf_func) (info->stream, "\t");
for (opindex = opcode->operands; *opindex != 0; opindex++)
{
long value;
operand = i370_operands + *opindex;
if (operand->extract)
value = (*operand->extract) (insn, (int *) NULL);
else
{
value = (insn.i[0] >> operand->shift) & ((1 << operand->bits) - 1);
}
if ((operand->flags & I370_OPERAND_OPTIONAL) != 0)
{
if (value)
(*info->fprintf_func) (info->stream, "(r%ld)", value);
}
else if ((operand->flags & I370_OPERAND_SBASE) != 0)
{
(*info->fprintf_func) (info->stream, "(r%ld)", value);
}
else if ((operand->flags & I370_OPERAND_INDEX) != 0)
{
if (value)
(*info->fprintf_func) (info->stream, "(r%ld,", value);
else
(*info->fprintf_func) (info->stream, "(,");
}
else if ((operand->flags & I370_OPERAND_LENGTH) != 0)
{
(*info->fprintf_func) (info->stream, "(%ld,", value);
}
else if ((operand->flags & I370_OPERAND_BASE) != 0)
(*info->fprintf_func) (info->stream, "r%ld)", value);
else if ((operand->flags & I370_OPERAND_GPR) != 0)
(*info->fprintf_func) (info->stream, "r%ld,", value);
else if ((operand->flags & I370_OPERAND_FPR) != 0)
(*info->fprintf_func) (info->stream, "f%ld,", value);
else if ((operand->flags & I370_OPERAND_RELATIVE) != 0)
(*info->fprintf_func) (info->stream, "%ld", value);
else
(*info->fprintf_func) (info->stream, " %ld, ", value);
}
return opcode->len;
}
(*info->fprintf_func) (info->stream, ".short 0x%02x%02x", buffer[0], buffer[1]);
return 2;
}