/* CGEN generic opcode support.
- Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
This file is part of the GNU Binutils and GDB, the GNU debugger.
#include "symcat.h"
#include "opcode/cgen.h"
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif
+
static unsigned int hash_keyword_name
PARAMS ((const CGEN_KEYWORD *, const char *, int));
static unsigned int hash_keyword_value
CGEN_CPU_DESC cd;
const char *name;
{
- int i;
+ unsigned int i;
const CGEN_HW_ENTRY **hw = cd->hw_table.entries;
for (i = 0; i < cd->hw_table.num_entries; ++i)
const CGEN_HW_ENTRY *
cgen_hw_lookup_by_num (cd, hwnum)
CGEN_CPU_DESC cd;
- int hwnum;
+ unsigned int hwnum;
{
- int i;
+ unsigned int i;
const CGEN_HW_ENTRY **hw = cd->hw_table.entries;
/* ??? This can be speeded up. */
CGEN_CPU_DESC cd;
const char *name;
{
- int i;
+ unsigned int i;
const CGEN_OPERAND **op = cd->operand_table.entries;
for (i = 0; i < cd->operand_table.num_entries; ++i)
unsigned char *buf;
int length;
{
- CGEN_INSN_INT value;
-
- switch (length)
- {
- case 8:
- value = *buf;
- break;
- case 16:
- if (cd->insn_endian == CGEN_ENDIAN_BIG)
- value = bfd_getb16 (buf);
- else
- value = bfd_getl16 (buf);
- break;
- case 32:
- if (cd->insn_endian == CGEN_ENDIAN_BIG)
- value = bfd_getb32 (buf);
- else
- value = bfd_getl32 (buf);
- break;
- default:
- abort ();
- }
-
- return value;
+ return bfd_get_bits (buf, length, cd->insn_endian == CGEN_ENDIAN_BIG);
}
/* Cover function to store an insn value properly byteswapped. */
int length;
CGEN_INSN_INT value;
{
- switch (length)
- {
- case 8:
- buf[0] = value;
- break;
- case 16:
- if (cd->insn_endian == CGEN_ENDIAN_BIG)
- bfd_putb16 (value, buf);
- else
- bfd_putl16 (value, buf);
- break;
- case 32:
- if (cd->insn_endian == CGEN_ENDIAN_BIG)
- bfd_putb32 (value, buf);
- else
- bfd_putl32 (value, buf);
- break;
- default:
- abort ();
- }
+ bfd_put_bits ((bfd_vma) value, buf, length,
+ cd->insn_endian == CGEN_ENDIAN_BIG);
}
\f
/* Look up instruction INSN_*_VALUE and extract its fields.
cgen_get_insn_operands (cd, insn, fields, indices);
return insn;
}
+
+/* Allow signed overflow of instruction fields. */
+void
+cgen_set_signed_overflow_ok (cd)
+ CGEN_CPU_DESC cd;
+{
+ cd->signed_overflow_ok_p = 1;
+}
+
+/* Generate an error message if a signed field in an instruction overflows. */
+void
+cgen_clear_signed_overflow_ok (cd)
+ CGEN_CPU_DESC cd;
+{
+ cd->signed_overflow_ok_p = 0;
+}
+
+/* Will an error message be generated if a signed field in an instruction overflows ? */
+unsigned int
+cgen_signed_overflow_ok_p (cd)
+ CGEN_CPU_DESC cd;
+{
+ return cd->signed_overflow_ok_p;
+}