/* CGEN generic opcode support.
- Copyright (C) 1996-2015 Free Software Foundation, Inc.
+ Copyright (C) 1996-2017 Free Software Foundation, Inc.
This file is part of libopcodes.
CGEN_FIELDS *fields,
int alias_p)
{
- unsigned char *buf;
- CGEN_INSN_INT base_insn;
CGEN_EXTRACT_INFO ex_info;
CGEN_EXTRACT_INFO *info;
if (cd->int_insn_p)
{
info = NULL;
- buf = (unsigned char *) alloca (cd->max_insn_bitsize / 8);
- cgen_put_insn_value (cd, buf, length, insn_int_value);
- base_insn = insn_int_value;
+ insn_bytes_value = (unsigned char *) xmalloc (cd->max_insn_bitsize / 8);
+ cgen_put_insn_value (cd, insn_bytes_value, length, insn_int_value);
}
else
{
ex_info.dis_info = NULL;
ex_info.insn_bytes = insn_bytes_value;
ex_info.valid = -1;
- buf = insn_bytes_value;
- base_insn = cgen_get_insn_value (cd, buf, length);
+ insn_int_value = cgen_get_insn_value (cd, insn_bytes_value, length);
}
if (!insn)
/* The instructions are stored in hash lists.
Pick the first one and keep trying until we find the right one. */
- insn_list = cgen_dis_lookup_insn (cd, (char *) buf, base_insn);
+ insn_list = cgen_dis_lookup_insn (cd, (char *) insn_bytes_value,
+ insn_int_value);
while (insn_list != NULL)
{
insn = insn_list->insn;
/* Basic bit mask must be correct. */
/* ??? May wish to allow target to defer this check until the
extract handler. */
- if ((base_insn & CGEN_INSN_BASE_MASK (insn))
+ if ((insn_int_value & CGEN_INSN_BASE_MASK (insn))
== CGEN_INSN_BASE_VALUE (insn))
{
/* ??? 0 is passed for `pc' */
int elength = CGEN_EXTRACT_FN (cd, insn)
- (cd, insn, info, base_insn, fields, (bfd_vma) 0);
+ (cd, insn, info, insn_int_value, fields, (bfd_vma) 0);
if (elength > 0)
{
/* sanity check */
if (length != 0 && length != elength)
abort ();
- return insn;
+ break;
}
}
}
/* ??? 0 is passed for `pc' */
length = CGEN_EXTRACT_FN (cd, insn)
- (cd, insn, info, base_insn, fields, (bfd_vma) 0);
+ (cd, insn, info, insn_int_value, fields, (bfd_vma) 0);
/* Sanity check: must succeed.
Could relax this later if it ever proves useful. */
if (length == 0)
abort ();
- return insn;
}
- return NULL;
+ if (cd->int_insn_p)
+ free (insn_bytes_value);
+
+ return insn;
}
/* Fill in the operand instances used by INSN whose operands are FIELDS.