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-rw-r--r--x/binutils/opcodes/cgen-asm.c363
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diff --git a/x/binutils/opcodes/cgen-asm.c b/x/binutils/opcodes/cgen-asm.c
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+++ b/x/binutils/opcodes/cgen-asm.c
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+/* CGEN generic assembler support code.
+
+ Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ This file is part of the GNU Binutils and GDB, the GNU debugger.
+
+ 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.
+
+ 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. */
+
+#include "sysdep.h"
+#include <stdio.h>
+#include "ansidecl.h"
+#include "libiberty.h"
+#include "safe-ctype.h"
+#include "bfd.h"
+#include "symcat.h"
+#include "opcode/cgen.h"
+#include "opintl.h"
+
+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);
+
+/* Set the cgen_parse_operand_fn callback. */
+
+void
+cgen_set_parse_operand_fn (CGEN_CPU_DESC cd, cgen_parse_operand_fn fn)
+{
+ 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)
+ {
+ 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 (CGEN_CPU_DESC cd)
+{
+ 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 *));
+ 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.
+ 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. */
+
+ 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.
+ 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 (CGEN_CPU_DESC cd, const char *insn)
+{
+ unsigned int hash;
+
+ if (cd->asm_hash_table == NULL)
+ build_asm_hash_table (cd);
+
+ hash = (* cd->asm_hash) (insn);
+ return cd->asm_hash_table[hash];
+}
+
+/* Keyword parser.
+ The result is NULL upon success or an error message.
+ If successful, *STRP is updated to point passed the keyword.
+
+ ??? At present we have a static notion of how to pick out a keyword.
+ Later we can allow a target to customize this if necessary [say by
+ recording something in the keyword table]. */
+
+const char *
+cgen_parse_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
+ const char **strp,
+ CGEN_KEYWORD *keyword_table,
+ long *valuep)
+{
+ const CGEN_KEYWORD_ENTRY *ke;
+ char buf[256];
+ const char *p,*start;
+
+ if (keyword_table->name_hash_table == NULL)
+ (void) cgen_keyword_search_init (keyword_table, NULL);
+
+ 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;
+
+ /* 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 - 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;
+ /* Don't advance pointer if we recognized the null keyword. */
+ if (ke->name[0] != 0)
+ *strp = p;
+ return NULL;
+ }
+
+ return "unrecognized keyword/register name";
+}
+
+/* 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 (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ long *valuep)
+{
+ bfd_vma value;
+ enum cgen_parse_operand_result result;
+ const char *errmsg;
+
+ errmsg = (* cd->parse_operand_fn)
+ (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE,
+ &result, &value);
+ /* FIXME: Examine `result'. */
+ if (!errmsg)
+ *valuep = value;
+ return errmsg;
+}
+
+/* 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 (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ unsigned long *valuep)
+{
+ bfd_vma value;
+ enum cgen_parse_operand_result result;
+ const char *errmsg;
+
+ errmsg = (* cd->parse_operand_fn)
+ (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE,
+ &result, &value);
+ /* FIXME: Examine `result'. */
+ if (!errmsg)
+ *valuep = value;
+ return errmsg;
+}
+
+/* Address parser. */
+
+const char *
+cgen_parse_address (CGEN_CPU_DESC cd,
+ const char **strp,
+ int opindex,
+ int opinfo,
+ enum cgen_parse_operand_result *resultp,
+ bfd_vma *valuep)
+{
+ bfd_vma value;
+ enum cgen_parse_operand_result result_type;
+ const char *errmsg;
+
+ 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 (long value, long min, long max)
+{
+ if (value < min || value > max)
+ {
+ static char buf[100];
+
+ /* xgettext:c-format */
+ sprintf (buf, _("operand out of range (%ld not between %ld and %ld)"),
+ value, min, max);
+ return buf;
+ }
+
+ return NULL;
+}
+
+/* Unsigned integer validation routine.
+ Supplying `min' here may seem unnecessary, but we also want to handle
+ cases where min != 0 (and max > LONG_MAX). */
+
+const char *
+cgen_validate_unsigned_integer (unsigned long value,
+ unsigned long min,
+ unsigned long max)
+{
+ if (value < min || value > max)
+ {
+ static char buf[100];
+
+ /* xgettext:c-format */
+ sprintf (buf, _("operand out of range (%lu not between %lu and %lu)"),
+ value, min, max);
+ return buf;
+ }
+
+ return NULL;
+}
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