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-rw-r--r--opcodes/i386-gen.c394
1 files changed, 394 insertions, 0 deletions
diff --git a/opcodes/i386-gen.c b/opcodes/i386-gen.c
new file mode 100644
index 000000000000..80d414f4a80a
--- /dev/null
+++ b/opcodes/i386-gen.c
@@ -0,0 +1,394 @@
+/* Copyright 2007 Free Software Foundation, Inc.
+
+ This file is part of GAS, the GNU Assembler, 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 of the License, 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include "getopt.h"
+#include "libiberty.h"
+#include "safe-ctype.h"
+
+#include "i386-opc.h"
+
+#include <libintl.h>
+#define _(String) gettext (String)
+
+static const char *program_name = NULL;
+static int debug = 0;
+
+static void
+fail (const char *message, ...)
+{
+ va_list args;
+
+ va_start (args, message);
+ fprintf (stderr, _("%s: Error: "), program_name);
+ vfprintf (stderr, message, args);
+ va_end (args);
+ xexit (1);
+}
+
+/* Remove leading white spaces. */
+
+static char *
+remove_leading_whitespaces (char *str)
+{
+ while (ISSPACE (*str))
+ str++;
+ return str;
+}
+
+/* Remove trailing white spaces. */
+
+static void
+remove_trailing_whitespaces (char *str)
+{
+ size_t last = strlen (str);
+
+ if (last == 0)
+ return;
+
+ do
+ {
+ last--;
+ if (ISSPACE (str [last]))
+ str[last] = '\0';
+ else
+ break;
+ }
+ while (last != 0);
+}
+
+/* Find next field separated by '.' and terminate it. Return a
+ pointer to the one after it. */
+
+static char *
+next_field (char *str, char **next)
+{
+ char *p;
+
+ p = remove_leading_whitespaces (str);
+ for (str = p; *str != ',' && *str != '\0'; str++);
+
+ *str = '\0';
+ remove_trailing_whitespaces (p);
+
+ *next = str + 1;
+
+ return p;
+}
+
+static void
+process_i386_opcodes (void)
+{
+ FILE *fp = fopen ("i386-opc.tbl", "r");
+ char buf[2048];
+ unsigned int i;
+ char *str, *p, *last;
+ char *name, *operands, *base_opcode, *extension_opcode;
+ char *cpu_flags, *opcode_modifier, *operand_types [MAX_OPERANDS];
+
+ if (fp == NULL)
+ fail (_("can't find i386-opc.tbl for reading\n"));
+
+ printf ("\n/* i386 opcode table. */\n\n");
+ printf ("const template i386_optab[] =\n{\n");
+
+ while (!feof (fp))
+ {
+ if (fgets (buf, sizeof (buf), fp) == NULL)
+ break;
+
+ p = remove_leading_whitespaces (buf);
+
+ /* Skip comments. */
+ str = strstr (p, "//");
+ if (str != NULL)
+ str[0] = '\0';
+
+ /* Remove trailing white spaces. */
+ remove_trailing_whitespaces (p);
+
+ switch (p[0])
+ {
+ case '#':
+ printf ("%s\n", p);
+ case '\0':
+ continue;
+ break;
+ default:
+ break;
+ }
+
+ last = p + strlen (p);
+
+ /* Find name. */
+ name = next_field (p, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find number of operands. */
+ operands = next_field (str, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find base_opcode. */
+ base_opcode = next_field (str, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find extension_opcode. */
+ extension_opcode = next_field (str, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find cpu_flags. */
+ cpu_flags = next_field (str, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find opcode_modifier. */
+ opcode_modifier = next_field (str, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Remove the first {. */
+ str = remove_leading_whitespaces (str);
+ if (*str != '{')
+ abort ();
+ str = remove_leading_whitespaces (str + 1);
+
+ i = strlen (str);
+
+ /* There are at least "X}". */
+ if (i < 2)
+ abort ();
+
+ /* Remove trailing white spaces and }. */
+ do
+ {
+ i--;
+ if (ISSPACE (str[i]) || str[i] == '}')
+ str[i] = '\0';
+ else
+ break;
+ }
+ while (i != 0);
+
+ last = str + i;
+
+ /* Find operand_types. */
+ for (i = 0; i < ARRAY_SIZE (operand_types); i++)
+ {
+ if (str >= last)
+ {
+ operand_types [i] = NULL;
+ break;
+ }
+
+ operand_types [i] = next_field (str, &str);
+ if (*operand_types[i] == '0')
+ {
+ if (i != 0)
+ operand_types[i] = NULL;
+ break;
+ }
+ }
+
+ printf (" { \"%s\", %s, %s, %s, %s,\n",
+ name, operands, base_opcode, extension_opcode,
+ cpu_flags);
+
+ printf (" %s,\n", opcode_modifier);
+
+ printf (" { ");
+
+ for (i = 0; i < ARRAY_SIZE (operand_types); i++)
+ {
+ if (operand_types[i] == NULL
+ || *operand_types[i] == '0')
+ {
+ if (i == 0)
+ printf ("0");
+ break;
+ }
+
+ if (i != 0)
+ printf (",\n ");
+
+ printf ("%s", operand_types[i]);
+ }
+ printf (" } },\n");
+ }
+
+ printf (" { NULL, 0, 0, 0, 0, 0, { 0 } }\n");
+ printf ("};\n");
+}
+
+static void
+process_i386_registers (void)
+{
+ FILE *fp = fopen ("i386-reg.tbl", "r");
+ char buf[2048];
+ char *str, *p, *last;
+ char *reg_name, *reg_type, *reg_flags, *reg_num;
+
+ if (fp == NULL)
+ fail (_("can't find i386-reg.tbl for reading\n"));
+
+ printf ("\n/* i386 register table. */\n\n");
+ printf ("const reg_entry i386_regtab[] =\n{\n");
+
+ while (!feof (fp))
+ {
+ if (fgets (buf, sizeof (buf), fp) == NULL)
+ break;
+
+ p = remove_leading_whitespaces (buf);
+
+ /* Skip comments. */
+ str = strstr (p, "//");
+ if (str != NULL)
+ str[0] = '\0';
+
+ /* Remove trailing white spaces. */
+ remove_trailing_whitespaces (p);
+
+ switch (p[0])
+ {
+ case '#':
+ printf ("%s\n", p);
+ case '\0':
+ continue;
+ break;
+ default:
+ break;
+ }
+
+ last = p + strlen (p);
+
+ /* Find reg_name. */
+ reg_name = next_field (p, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find reg_type. */
+ reg_type = next_field (str, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find reg_flags. */
+ reg_flags = next_field (str, &str);
+
+ if (str >= last)
+ abort ();
+
+ /* Find reg_num. */
+ reg_num = next_field (str, &str);
+
+ printf (" { \"%s\", %s, %s, %s },\n",
+ reg_name, reg_type, reg_flags, reg_num);
+ }
+
+ printf ("};\n");
+
+ printf ("\nconst unsigned int i386_regtab_size = ARRAY_SIZE (i386_regtab);\n");
+}
+
+/* Program options. */
+#define OPTION_SRCDIR 200
+
+struct option long_options[] =
+{
+ {"srcdir", required_argument, NULL, OPTION_SRCDIR},
+ {"debug", no_argument, NULL, 'd'},
+ {"version", no_argument, NULL, 'V'},
+ {"help", no_argument, NULL, 'h'},
+ {0, no_argument, NULL, 0}
+};
+
+static void
+print_version (void)
+{
+ printf ("%s: version 1.0\n", program_name);
+ xexit (0);
+}
+
+static void
+usage (FILE * stream, int status)
+{
+ fprintf (stream, "Usage: %s [-V | --version] [-d | --debug] [--srcdir=dirname] [--help]\n",
+ program_name);
+ xexit (status);
+}
+
+int
+main (int argc, char **argv)
+{
+ extern int chdir (char *);
+ char *srcdir = NULL;
+ int c;
+
+ program_name = *argv;
+ xmalloc_set_program_name (program_name);
+
+ while ((c = getopt_long (argc, argv, "vVdh", long_options, 0)) != EOF)
+ switch (c)
+ {
+ case OPTION_SRCDIR:
+ srcdir = optarg;
+ break;
+ case 'V':
+ case 'v':
+ print_version ();
+ break;
+ case 'd':
+ debug = 1;
+ break;
+ case 'h':
+ case '?':
+ usage (stderr, 0);
+ default:
+ case 0:
+ break;
+ }
+
+ if (optind != argc)
+ usage (stdout, 1);
+
+ if (srcdir != NULL)
+ if (chdir (srcdir) != 0)
+ fail (_("unable to change directory to \"%s\", errno = %s\n"),
+ srcdir, strerror (errno));
+
+ printf ("/* This file is automatically generated by i386-gen. Do not edit! */\n");
+
+ process_i386_opcodes ();
+ process_i386_registers ();
+
+ exit (0);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 14:59:07 +0000