/* CGEN generic assembler support code.
+ Copyright (C) 1996-2020 Free Software Foundation, Inc.
-Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of libopcodes.
-This file is part of the GNU Binutils and GDB, the GNU debugger.
+ This library is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
-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
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+ It is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
+ License for more details.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-You should have received a copy of the GNU General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
-#include "config.h"
+#include "sysdep.h"
#include <stdio.h>
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
#include "ansidecl.h"
#include "libiberty.h"
+#include "safe-ctype.h"
#include "bfd.h"
+#include "symcat.h"
#include "opcode/cgen.h"
+#include "opintl.h"
-/* This is not published as part of the public interface so we don't
- declare this in cgen.h. */
-extern CGEN_OPCODE_DATA *cgen_current_opcode_data;
+static CGEN_INSN_LIST * hash_insn_array (CGEN_CPU_DESC, const CGEN_INSN *, int, int, CGEN_INSN_LIST **, CGEN_INSN_LIST *);
+static CGEN_INSN_LIST * hash_insn_list (CGEN_CPU_DESC, const CGEN_INSN_LIST *, CGEN_INSN_LIST **, CGEN_INSN_LIST *);
+static void build_asm_hash_table (CGEN_CPU_DESC);
-/* Assembler instruction hash table. */
-static CGEN_INSN_LIST **asm_hash_table;
+/* Set the cgen_parse_operand_fn callback. */
void
-cgen_asm_init ()
+cgen_set_parse_operand_fn (CGEN_CPU_DESC cd, cgen_parse_operand_fn fn)
{
- if (asm_hash_table)
+ cd->parse_operand_fn = fn;
+}
+
+/* Called whenever starting to parse an insn. */
+
+void
+cgen_init_parse_operand (CGEN_CPU_DESC cd)
+{
+ /* This tells the callback to re-initialize. */
+ (void) (* cd->parse_operand_fn)
+ (cd, CGEN_PARSE_OPERAND_INIT, NULL, 0, 0, NULL, NULL);
+}
+
+/* Subroutine of build_asm_hash_table to add INSNS to the hash table.
+
+ COUNT is the number of elements in INSNS.
+ ENTSIZE is sizeof (CGEN_IBASE) for the target.
+ ??? No longer used but leave in for now.
+ HTABLE points to the hash table.
+ HENTBUF is a pointer to sufficiently large buffer of hash entries.
+ The result is a pointer to the next entry to use.
+
+ The table is scanned backwards as additions are made to the front of the
+ list and we want earlier ones to be prefered. */
+
+static CGEN_INSN_LIST *
+hash_insn_array (CGEN_CPU_DESC cd,
+ const CGEN_INSN *insns,
+ int count,
+ int entsize ATTRIBUTE_UNUSED,
+ CGEN_INSN_LIST **htable,
+ CGEN_INSN_LIST *hentbuf)
+{
+ int i;
+
+ for (i = count - 1; i >= 0; --i, ++hentbuf)
{
- free (asm_hash_table);
- asm_hash_table = NULL;
+ unsigned int hash;
+ const CGEN_INSN *insn = &insns[i];
+
+ if (! (* cd->asm_hash_p) (insn))
+ continue;
+ hash = (* cd->asm_hash) (CGEN_INSN_MNEMONIC (insn));
+ hentbuf->next = htable[hash];
+ hentbuf->insn = insn;
+ htable[hash] = hentbuf;
}
+
+ return hentbuf;
+}
+
+/* Subroutine of build_asm_hash_table to add INSNS to the hash table.
+ This function is identical to hash_insn_array except the insns are
+ in a list. */
+
+static CGEN_INSN_LIST *
+hash_insn_list (CGEN_CPU_DESC cd,
+ const CGEN_INSN_LIST *insns,
+ CGEN_INSN_LIST **htable,
+ CGEN_INSN_LIST *hentbuf)
+{
+ const CGEN_INSN_LIST *ilist;
+
+ for (ilist = insns; ilist != NULL; ilist = ilist->next, ++ hentbuf)
+ {
+ unsigned int hash;
+
+ if (! (* cd->asm_hash_p) (ilist->insn))
+ continue;
+ hash = (* cd->asm_hash) (CGEN_INSN_MNEMONIC (ilist->insn));
+ hentbuf->next = htable[hash];
+ hentbuf->insn = ilist->insn;
+ htable[hash] = hentbuf;
+ }
+
+ return hentbuf;
}
/* Build the assembler instruction hash table. */
static void
-build_asm_hash_table ()
+build_asm_hash_table (CGEN_CPU_DESC cd)
{
- int i;
- unsigned int hash;
- int count = cgen_insn_count ();
- CGEN_OPCODE_DATA *data = cgen_current_opcode_data;
- CGEN_INSN_TABLE *insn_table = data->insn_table;
- unsigned int hash_size = insn_table->asm_hash_table_size;
- const CGEN_INSN *insn;
- CGEN_INSN_LIST *insn_lists,*new_insns;
+ int count = cgen_insn_count (cd) + cgen_macro_insn_count (cd);
+ CGEN_INSN_TABLE *insn_table = &cd->insn_table;
+ CGEN_INSN_TABLE *macro_insn_table = &cd->macro_insn_table;
+ unsigned int hash_size = cd->asm_hash_size;
+ CGEN_INSN_LIST *hash_entry_buf;
+ CGEN_INSN_LIST **asm_hash_table;
+ CGEN_INSN_LIST *asm_hash_table_entries;
/* The space allocated for the hash table consists of two parts:
the hash table and the hash lists. */
asm_hash_table = (CGEN_INSN_LIST **)
- xmalloc (hash_size * sizeof (CGEN_INSN_LIST *)
- + count * sizeof (CGEN_INSN_LIST));
- memset (asm_hash_table, 0,
- hash_size * sizeof (CGEN_INSN_LIST *)
- + count * sizeof (CGEN_INSN_LIST));
- insn_lists = (CGEN_INSN_LIST *) (asm_hash_table + hash_size);
+ xmalloc (hash_size * sizeof (CGEN_INSN_LIST *));
+ memset (asm_hash_table, 0, hash_size * sizeof (CGEN_INSN_LIST *));
+ asm_hash_table_entries = hash_entry_buf = (CGEN_INSN_LIST *)
+ xmalloc (count * sizeof (CGEN_INSN_LIST));
/* Add compiled in insns.
- The table is scanned backwards as later additions are inserted in
- front of earlier ones and we want earlier ones to be prefered.
- We stop at the first one as it is a reserved entry. */
+ Don't include the first one as it is a reserved entry. */
+ /* ??? It was the end of all hash chains, and also the special
+ "invalid insn" marker. May be able to do it differently now. */
- for (insn = insn_table->init_entries + insn_table->num_init_entries - 1;
- insn > insn_table->init_entries;
- --insn, ++insn_lists)
- {
- hash = (*insn_table->asm_hash) (insn->syntax.mnemonic);
- insn_lists->next = asm_hash_table[hash];
- insn_lists->insn = insn;
- asm_hash_table[hash] = insn_lists;
- }
+ hash_entry_buf = hash_insn_array (cd,
+ insn_table->init_entries + 1,
+ insn_table->num_init_entries - 1,
+ insn_table->entry_size,
+ asm_hash_table, hash_entry_buf);
+
+ /* Add compiled in macro-insns. */
+
+ hash_entry_buf = hash_insn_array (cd, macro_insn_table->init_entries,
+ macro_insn_table->num_init_entries,
+ macro_insn_table->entry_size,
+ asm_hash_table, hash_entry_buf);
/* Add runtime added insns.
- ??? Currently later added insns will be prefered over earlier ones.
- Not sure this is a bug or not. */
- for (new_insns = insn_table->new_entries;
- new_insns != NULL;
- new_insns = new_insns->next, ++insn_lists)
- {
- hash = (*insn_table->asm_hash) (new_insns->insn->syntax.mnemonic);
- insn_lists->next = asm_hash_table[hash];
- insn_lists->insn = new_insns->insn;
- asm_hash_table[hash] = insn_lists;
- }
+ Later added insns will be prefered over earlier ones. */
+
+ hash_entry_buf = hash_insn_list (cd, insn_table->new_entries,
+ asm_hash_table, hash_entry_buf);
+
+ /* Add runtime added macro-insns. */
+
+ hash_insn_list (cd, macro_insn_table->new_entries,
+ asm_hash_table, hash_entry_buf);
+
+ cd->asm_hash_table = asm_hash_table;
+ cd->asm_hash_table_entries = asm_hash_table_entries;
}
/* Return the first entry in the hash list for INSN. */
CGEN_INSN_LIST *
-cgen_asm_lookup_insn (insn)
- const char *insn;
+cgen_asm_lookup_insn (CGEN_CPU_DESC cd, const char *insn)
{
unsigned int hash;
- if (asm_hash_table == NULL)
- build_asm_hash_table ();
+ if (cd->asm_hash_table == NULL)
+ build_asm_hash_table (cd);
- hash = (*cgen_current_opcode_data->insn_table->asm_hash) (insn);
- return asm_hash_table[hash];
+ hash = (* cd->asm_hash) (insn);
+ return cd->asm_hash_table[hash];
}
\f
/* Keyword parser.
recording something in the keyword table]. */
const char *
-cgen_parse_keyword (strp, keyword_table, valuep)
- const char **strp;
- struct cgen_keyword *keyword_table;
- long *valuep;
+cgen_parse_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ const char **strp,
+ CGEN_KEYWORD *keyword_table,
+ long *valuep)
{
- const struct cgen_keyword_entry *ke;
+ const CGEN_KEYWORD_ENTRY *ke;
char buf[256];
- const char *p;
+ const char *p,*start;
- p = *strp;
+ if (keyword_table->name_hash_table == NULL)
+ (void) cgen_keyword_search_init (keyword_table, NULL);
- /* Allow any first character. */
+ p = start = *strp;
+
+ /* Allow any first character. This is to make life easier for
+ the fairly common case of suffixes, eg. 'ld.b.w', where the first
+ character of the suffix ('.') is special. */
if (*p)
++p;
- /* Now allow letters, digits, and _. */
- while (isalnum (*p) || *p == '_')
+ /* Allow letters, digits, and any special characters. */
+ while (((p - start) < (int) sizeof (buf))
+ && *p
+ && (ISALNUM (*p)
+ || *p == '_'
+ || strchr (keyword_table->nonalpha_chars, *p)))
++p;
- if (p - *strp > 255)
- return "unrecognized keyword/register name";
-
- memcpy (buf, *strp, p - *strp);
- buf[p - *strp] = 0;
+ if (p - start >= (int) sizeof (buf))
+ {
+ /* All non-empty CGEN keywords can fit into BUF. The only thing
+ we can match here is the empty keyword. */
+ buf[0] = 0;
+ }
+ else
+ {
+ memcpy (buf, start, p - start);
+ buf[p - start] = 0;
+ }
ke = cgen_keyword_lookup_name (keyword_table, buf);
if (ke != NULL)
{
*valuep = ke->value;
- *strp = p;
+ /* Don't advance pointer if we recognized the null keyword. */
+ if (ke->name[0] != 0)
+ *strp = p;
return NULL;
}
return "unrecognized keyword/register name";
}
-/* Signed integer parser. */
+/* Parse a small signed integer parser.
+ ??? VALUEP is not a bfd_vma * on purpose, though this is confusing.
+ Note that if the caller expects a bfd_vma result, it should call
+ cgen_parse_address. */
const char *
-cgen_parse_signed_integer (strp, opindex, min, max, valuep)
- const char **strp;
- int opindex;
- long min, max;
- long *valuep;
+cgen_parse_signed_integer (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ long *valuep)
{
- long value;
- enum cgen_asm_result result;
+ bfd_vma value;
+ enum cgen_parse_operand_result result;
const char *errmsg;
- errmsg = cgen_asm_parse_operand (strp, opindex, BFD_RELOC_NONE,
- &result, &value);
+ errmsg = (* cd->parse_operand_fn)
+ (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE,
+ &result, &value);
/* FIXME: Examine `result'. */
if (!errmsg)
{
- if (value < min || value > max)
- return "integer operand out of range";
+ /* Handle the case where a hex value is parsed on a 64-bit host.
+ A value like 0xffffe000 is clearly intended to be a negative
+ 16-bit value, but on a 64-bit host it will be parsed by gas
+ as 0x00000000ffffe000.
+
+ The shifts below are designed not to produce compile time
+ warnings on a 32-bit host. */
+ if (sizeof (value) > 4
+ && result == CGEN_PARSE_OPERAND_RESULT_NUMBER
+ && value > 0
+ && (value & 0x80000000)
+ && ((value >> 31) == 1))
+ value |= ((bfd_vma) -1) << 31;
+
*valuep = value;
}
return errmsg;
}
-/* Unsigned integer parser. */
+/* Parse a small unsigned integer parser.
+ ??? VALUEP is not a bfd_vma * on purpose, though this is confusing.
+ Note that if the caller expects a bfd_vma result, it should call
+ cgen_parse_address. */
const char *
-cgen_parse_unsigned_integer (strp, opindex, min, max, valuep)
- const char **strp;
- int opindex;
- unsigned long min, max;
- unsigned long *valuep;
+cgen_parse_unsigned_integer (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ unsigned long *valuep)
{
- unsigned long value;
- enum cgen_asm_result result;
+ bfd_vma value;
+ enum cgen_parse_operand_result result;
const char *errmsg;
- errmsg = cgen_asm_parse_operand (strp, opindex, BFD_RELOC_NONE,
- &result, &value);
+ errmsg = (* cd->parse_operand_fn)
+ (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE,
+ &result, &value);
/* FIXME: Examine `result'. */
if (!errmsg)
- {
- if (value < min || value > max)
- return "integer operand out of range";
- *valuep = value;
- }
+ *valuep = value;
return errmsg;
}
/* Address parser. */
const char *
-cgen_parse_address (strp, opindex, opinfo, valuep)
- const char **strp;
- int opindex;
- int opinfo;
- long *valuep;
+cgen_parse_address (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ int opinfo,
+ enum cgen_parse_operand_result *resultp,
+ bfd_vma *valuep)
{
- long value;
- enum cgen_asm_result result;
+ bfd_vma value;
+ enum cgen_parse_operand_result result_type;
const char *errmsg;
- errmsg = cgen_asm_parse_operand (strp, opindex, opinfo, &result, &value);
+ errmsg = (* cd->parse_operand_fn)
+ (cd, CGEN_PARSE_OPERAND_ADDRESS, strp, opindex, opinfo,
+ &result_type, &value);
/* FIXME: Examine `result'. */
if (!errmsg)
{
+ if (resultp != NULL)
+ *resultp = result_type;
*valuep = value;
}
return errmsg;
/* Signed integer validation routine. */
const char *
-cgen_validate_signed_integer (value, min, max)
- long value, min, max;
+cgen_validate_signed_integer (long value, long min, long max)
{
if (value < min || value > max)
{
- const char *err =
- "operand out of range (%ld not between %ld and %ld)";
static char buf[100];
- sprintf (buf, err, value, min, max);
+ /* xgettext:c-format */
+ sprintf (buf, _("operand out of range (%ld not between %ld and %ld)"),
+ value, min, max);
return buf;
}
cases where min != 0 (and max > LONG_MAX). */
const char *
-cgen_validate_unsigned_integer (value, min, max)
- unsigned long value, min, max;
+cgen_validate_unsigned_integer (unsigned long value,
+ unsigned long min,
+ unsigned long max)
{
if (value < min || value > max)
{
- const char *err =
- "operand out of range (%lu not between %lu and %lu)";
static char buf[100];
- sprintf (buf, err, value, min, max);
+ /* xgettext:c-format */
+ sprintf (buf, _("operand out of range (%lu not between %lu and %lu)"),
+ value, min, max);
return buf;
}
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