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binutils-gdb/sim/ppc/dgen.c

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/* This file is part of the program psim.
Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdio.h>
#include <ctype.h>
#include <stdarg.h>
#include "build-config.h"
#include "misc.h"
#include "lf.h"
#include "table.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
/****************************************************************/
int spreg_lookup_table = 1;
enum {
nr_of_sprs = 1024,
};
/****************************************************************/
typedef enum {
spreg_name,
spreg_reg_nr,
spreg_readonly,
spreg_length,
nr_spreg_fields,
} spreg_fields;
typedef struct _spreg_table_entry spreg_table_entry;
struct _spreg_table_entry {
char *name;
int spreg_nr;
int is_readonly;
int length;
table_entry *entry;
spreg_table_entry *next;
};
typedef struct _spreg_table spreg_table;
struct _spreg_table {
spreg_table_entry *sprs;
};
static void
spreg_table_insert(spreg_table *table, table_entry *entry)
{
/* create a new spr entry */
spreg_table_entry *new_spr = ZALLOC(spreg_table_entry);
new_spr->next = NULL;
new_spr->entry = entry;
new_spr->spreg_nr = atoi(entry->fields[spreg_reg_nr]);
new_spr->is_readonly = (entry->fields[spreg_readonly]
? atoi(entry->fields[spreg_readonly])
: 0);
new_spr->length = atoi(entry->fields[spreg_length]);
new_spr->name = (char*)zalloc(strlen(entry->fields[spreg_name]) + 1);
ASSERT(new_spr->name != NULL);
{
int i;
for (i = 0; entry->fields[spreg_name][i] != '\0'; i++) {
if (isupper(entry->fields[spreg_name][i]))
new_spr->name[i] = tolower(entry->fields[spreg_name][i]);
else
new_spr->name[i] = entry->fields[spreg_name][i];
}
}
/* insert, by spreg_nr order */
{
spreg_table_entry **ptr_to_spreg_entry = &table->sprs;
spreg_table_entry *spreg_entry = *ptr_to_spreg_entry;
while (spreg_entry != NULL && spreg_entry->spreg_nr < new_spr->spreg_nr) {
ptr_to_spreg_entry = &spreg_entry->next;
spreg_entry = *ptr_to_spreg_entry;
}
ASSERT(spreg_entry == NULL || spreg_entry->spreg_nr != new_spr->spreg_nr);
*ptr_to_spreg_entry = new_spr;
new_spr->next = spreg_entry;
}
}
static spreg_table *
spreg_table_load(char *file_name)
{
table *file = table_open(file_name, nr_spreg_fields, 0);
spreg_table *table = ZALLOC(spreg_table);
{
table_entry *entry;
while ((entry = table_entry_read(file)) != NULL) {
spreg_table_insert(table, entry);
}
}
return table;
}
/****************************************************************/
char *spreg_attributes[] = {
"is_valid",
"is_readonly",
"name",
"index",
"length",
0
};
static void
gen_spreg_h(spreg_table *table, lf *file)
{
spreg_table_entry *entry;
char **attribute;
lf_print__gnu_copyleft(file);
lf_printf(file, "\n");
lf_printf(file, "#ifndef _SPREG_H_\n");
lf_printf(file, "#define _SPREG_H_\n");
lf_printf(file, "\n");
lf_printf(file, "typedef unsigned_word spreg;\n");
lf_printf(file, "\n");
lf_printf(file, "typedef enum {\n");
for (entry = table->sprs;
entry != NULL ;
entry = entry->next) {
lf_printf(file, " spr_%s = %d,\n", entry->name, entry->spreg_nr);
}
lf_printf(file, " nr_of_sprs = %d\n", nr_of_sprs);
lf_printf(file, "} sprs;\n");
lf_printf(file, "\n");
for (attribute = spreg_attributes;
*attribute != NULL;
attribute++) {
if (strcmp(*attribute, "name") == 0) {
lf_print_function_type(file, "const char *", "INLINE_SPREG", " ");
lf_printf(file, "spr_%s(sprs spr);\n", *attribute);
}
else {
lf_print_function_type(file, "int", "INLINE_SPREG", " ");
lf_printf(file, "spr_%s(sprs spr);\n", *attribute);
}
}
lf_printf(file, "\n");
lf_printf(file, "#endif /* _SPREG_H_ */\n");
}
static void
gen_spreg_c(spreg_table *table, lf *file)
{
spreg_table_entry *entry;
char **attribute;
int spreg_nr;
lf_print__gnu_copyleft(file);
lf_printf(file, "\n");
lf_printf(file, "#ifndef _SPREG_C_\n");
lf_printf(file, "#define _SPREG_C_\n");
lf_printf(file, "\n");
lf_printf(file, "#include \"basics.h\"\n");
lf_printf(file, "#include \"spreg.h\"\n");
lf_printf(file, "\n");
lf_printf(file, "typedef struct _spreg_info {\n");
lf_printf(file, " char *name;\n");
lf_printf(file, " int is_valid;\n");
lf_printf(file, " int length;\n");
lf_printf(file, " int is_readonly;\n");
lf_printf(file, " int index;\n");
lf_printf(file, "} spreg_info;\n");
lf_printf(file, "\n");
lf_printf(file, "static spreg_info spr_info[nr_of_sprs+1] = {\n");
entry = table->sprs;
for (spreg_nr = 0; spreg_nr < nr_of_sprs+1; spreg_nr++) {
if (entry == NULL || spreg_nr < entry->spreg_nr)
lf_printf(file, " { 0, 0, 0, 0, %d},\n", spreg_nr);
else {
lf_printf(file, " { \"%s\", %d, %d, %d, spr_%s /*%d*/ },\n",
entry->name, 1, entry->length, entry->is_readonly,
entry->name, entry->spreg_nr);
entry = entry->next;
}
}
lf_printf(file, "};\n");
for (attribute = spreg_attributes;
*attribute != NULL;
attribute++) {
lf_printf(file, "\n");
if (strcmp(*attribute, "name") == 0) {
lf_print_function_type(file, "const char *", "INLINE_SPREG", "\n");
}
else {
lf_print_function_type(file, "int", "INLINE_SPREG", "\n");
}
lf_printf(file, "spr_%s(sprs spr)\n", *attribute);
lf_printf(file, "{\n");
if (spreg_lookup_table
|| strcmp(*attribute, "name") == 0
|| strcmp(*attribute, "index") == 0)
lf_printf(file, " return spr_info[spr].%s;\n",
*attribute);
else {
spreg_table_entry *entry;
lf_printf(file, " switch (spr) {\n");
for (entry = table->sprs; entry != NULL; entry = entry->next) {
lf_printf(file, " case %d:\n", entry->spreg_nr);
if (strcmp(*attribute, "is_valid") == 0)
lf_printf(file, " return 1;\n");
else if (strcmp(*attribute, "is_readonly") == 0)
lf_printf(file, " return %d;\n", entry->is_readonly);
else if (strcmp(*attribute, "length") == 0)
lf_printf(file, " return %d;\n", entry->length);
else
ASSERT(0);
}
lf_printf(file, " default:\n");
lf_printf(file, " return 0;\n");
lf_printf(file, " }\n");
}
lf_printf(file, "}\n");
}
lf_printf(file, "\n");
lf_printf(file, "#endif /* _SPREG_C_ */\n");
}
/****************************************************************/
int
main(int argc,
char **argv,
char **envp)
{
lf_file_references file_references = lf_include_references;
spreg_table *sprs = NULL;
char *real_file_name = NULL;
int is_header = 0;
int ch;
if (argc <= 1) {
printf("Usage: dgen ...\n");
printf("-s Use switch instead of table\n");
printf("-n <file-name> Use this as cpp line numbering name\n");
printf("-h Output header file\n");
printf("-p <spreg-file> Output spreg.h(P) or spreg.c(p)\n");
printf("-L Suppress cpp line numbering in output files\n");
}
while ((ch = getopt(argc, argv, "hLsn:r:p:")) != -1) {
fprintf(stderr, "\t-%c %s\n", ch, ( optarg ? optarg : ""));
switch(ch) {
case 's':
spreg_lookup_table = 0;
break;
case 'r':
sprs = spreg_table_load(optarg);
break;
case 'n':
real_file_name = strdup(optarg);
break;
case 'L':
file_references = lf_omit_references;
break;
case 'h':
is_header = 1;
break;
case 'p':
{
lf *file = lf_open(optarg, real_file_name, file_references,
(is_header ? lf_is_h : lf_is_c),
argv[0]);
if (is_header)
gen_spreg_h(sprs, file);
else
gen_spreg_c(sprs, file);
lf_close(file);
is_header = 0;
}
real_file_name = NULL;
break;
default:
error("unknown option\n");
}
}
return 0;
}
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