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binutils-gdb/sim/ppc/igen.c
Mike Frysinger 3d52735bab sim: include stdlib.h for atoi() 
Make sure the files using atoi() include stdlib.h for its prototype.
These files were relying on it being included implicitly by others
which isn't guaranteed, and newer toolchains produce warnings.
2021-01-04 20:17:37 -05:00

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/* This file is part of the program psim.
Copyright 1994, 1995, 1996, 1997, 2003 Andrew Cagney
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 <getopt.h>
#include <stdlib.h>
#include "misc.h"
#include "lf.h"
#include "table.h"
#include "build-config.h"
#include "filter.h"
#include "ld-cache.h"
#include "ld-decode.h"
#include "ld-insn.h"
#include "igen.h"
#include "gen-model.h"
#include "gen-icache.h"
#include "gen-itable.h"
#include "gen-idecode.h"
#include "gen-semantics.h"
#include "gen-support.h"
int hi_bit_nr;
int insn_bit_size = max_insn_bit_size;
igen_code code = generate_calls;
int generate_expanded_instructions;
int icache_size = 1024;
int generate_smp;
/****************************************************************/
static int
print_insn_bits(lf *file, insn_bits *bits)
{
int nr = 0;
if (bits == NULL)
return nr;
nr += print_insn_bits(file, bits->last);
nr += lf_putchr(file, '_');
nr += lf_putstr(file, bits->field->val_string);
if (bits->opcode->is_boolean && bits->value == 0)
nr += lf_putint(file, bits->opcode->boolean_constant);
else if (!bits->opcode->is_boolean) {
if (bits->opcode->last < bits->field->last)
nr += lf_putint(file, bits->value << (bits->field->last - bits->opcode->last));
else
nr += lf_putint(file, bits->value);
}
return nr;
}
extern int
print_function_name(lf *file,
const char *basename,
insn_bits *expanded_bits,
lf_function_name_prefixes prefix)
{
int nr = 0;
/* the prefix */
switch (prefix) {
case function_name_prefix_semantics:
nr += lf_putstr(file, "semantic_");
break;
case function_name_prefix_idecode:
nr += lf_printf(file, "idecode_");
break;
case function_name_prefix_itable:
nr += lf_putstr(file, "itable_");
break;
case function_name_prefix_icache:
nr += lf_putstr(file, "icache_");
break;
default:
break;
}
/* the function name */
{
const char *pos;
for (pos = basename;
*pos != '\0';
pos++) {
switch (*pos) {
case '/':
case '-':
case '(':
case ')':
break;
case ' ':
nr += lf_putchr(file, '_');
break;
default:
nr += lf_putchr(file, *pos);
break;
}
}
}
/* the suffix */
if (generate_expanded_instructions)
nr += print_insn_bits(file, expanded_bits);
return nr;
}
void
print_my_defines(lf *file,
insn_bits *expanded_bits,
table_entry *file_entry)
{
/* #define MY_INDEX xxxxx */
lf_indent_suppress(file);
lf_printf(file, "#undef MY_INDEX\n");
lf_indent_suppress(file);
lf_printf(file, "#define MY_INDEX ");
print_function_name(file,
file_entry->fields[insn_name],
NULL,
function_name_prefix_itable);
lf_printf(file, "\n");
/* #define MY_PREFIX xxxxxx */
lf_indent_suppress(file);
lf_printf(file, "#undef MY_PREFIX\n");
lf_indent_suppress(file);
lf_printf(file, "#define MY_PREFIX ");
print_function_name(file,
file_entry->fields[insn_name],
expanded_bits,
function_name_prefix_none);
lf_printf(file, "\n");
}
void
print_itrace(lf *file,
table_entry *file_entry,
int idecode)
{
lf_print__external_reference(file, file_entry->line_nr, file_entry->file_name);
lf_printf(file, "ITRACE(trace_%s, (\"%s %s\\n\"));\n",
(idecode ? "idecode" : "semantics"),
(idecode ? "idecode" : "semantics"),
file_entry->fields[insn_name]);
lf_print__internal_reference(file);
}
/****************************************************************/
static void
gen_semantics_h(insn_table *table,
lf *file,
igen_code generate)
{
lf_printf(file, "typedef %s idecode_semantic\n(%s);\n",
SEMANTIC_FUNCTION_TYPE,
SEMANTIC_FUNCTION_FORMAL);
lf_printf(file, "\n");
if ((code & generate_calls)) {
lf_printf(file, "extern int option_mpc860c0;\n");
lf_printf(file, "#define PAGE_SIZE 0x1000\n");
lf_printf(file, "\n");
lf_printf(file, "PSIM_EXTERN_SEMANTICS(void)\n");
lf_printf(file, "semantic_init(device* root);\n");
lf_printf(file, "\n");
if (generate_expanded_instructions)
insn_table_traverse_tree(table,
file, NULL,
1,
NULL, /* start */
print_semantic_declaration, /* leaf */
NULL, /* end */
NULL); /* padding */
else
insn_table_traverse_insn(table,
file, NULL,
print_semantic_declaration);
}
else {
lf_print__this_file_is_empty(file);
}
}
static void
gen_semantics_c(insn_table *table,
cache_table *cache_rules,
lf *file,
igen_code generate)
{
if ((code & generate_calls)) {
lf_printf(file, "\n");
lf_printf(file, "#include \"cpu.h\"\n");
lf_printf(file, "#include \"idecode.h\"\n");
lf_printf(file, "#include \"semantics.h\"\n");
lf_printf(file, "#ifdef HAVE_COMMON_FPU\n");
lf_printf(file, "#include \"sim-inline.h\"\n");
lf_printf(file, "#include \"sim-fpu.h\"\n");
lf_printf(file, "#endif\n");
lf_printf(file, "#include \"support.h\"\n");
lf_printf(file, "\n");
lf_printf(file, "int option_mpc860c0 = 0;\n");
lf_printf(file, "\n");
lf_printf(file, "PSIM_EXTERN_SEMANTICS(void)\n");
lf_printf(file, "semantic_init(device* root)\n");
lf_printf(file, "{\n");
lf_printf(file, " option_mpc860c0 = 0;\n");
lf_printf(file, " if (tree_find_property(root, \"/options/mpc860c0\"))\n");
lf_printf(file, " option_mpc860c0 = tree_find_integer_property(root, \"/options/mpc860c0\");\n");
lf_printf(file, " option_mpc860c0 *= 4; /* convert word count to byte count */\n");
lf_printf(file, "}\n");
lf_printf(file, "\n");
if (generate_expanded_instructions)
insn_table_traverse_tree(table,
file, cache_rules,
1,
NULL, /* start */
print_semantic_definition, /* leaf */
NULL, /* end */
NULL); /* padding */
else
insn_table_traverse_insn(table,
file, cache_rules,
print_semantic_definition);
}
else {
lf_print__this_file_is_empty(file);
}
}
/****************************************************************/
static void
gen_icache_h(insn_table *table,
lf *file,
igen_code generate)
{
lf_printf(file, "typedef %s idecode_icache\n(%s);\n",
ICACHE_FUNCTION_TYPE,
ICACHE_FUNCTION_FORMAL);
lf_printf(file, "\n");
if ((code & generate_calls)
&& (code & generate_with_icache)) {
insn_table_traverse_function(table,
file, NULL,
print_icache_internal_function_declaration);
if (generate_expanded_instructions)
insn_table_traverse_tree(table,
file, NULL,
1,
NULL, /* start */
print_icache_declaration, /* leaf */
NULL, /* end */
NULL); /* padding */
else
insn_table_traverse_insn(table,
file, NULL,
print_icache_declaration);
}
else {
lf_print__this_file_is_empty(file);
}
}
static void
gen_icache_c(insn_table *table,
cache_table *cache_rules,
lf *file,
igen_code generate)
{
/* output `internal' invalid/floating-point unavailable functions
where needed */
if ((code & generate_calls)
&& (code & generate_with_icache)) {
lf_printf(file, "\n");
lf_printf(file, "#include \"cpu.h\"\n");
lf_printf(file, "#include \"idecode.h\"\n");
lf_printf(file, "#include \"semantics.h\"\n");
lf_printf(file, "#include \"icache.h\"\n");
lf_printf(file, "#ifdef HAVE_COMMON_FPU\n");
lf_printf(file, "#include \"sim-inline.h\"\n");
lf_printf(file, "#include \"sim-fpu.h\"\n");
lf_printf(file, "#endif\n");
lf_printf(file, "#include \"support.h\"\n");
lf_printf(file, "\n");
insn_table_traverse_function(table,
file, NULL,
print_icache_internal_function_definition);
lf_printf(file, "\n");
if (generate_expanded_instructions)
insn_table_traverse_tree(table,
file, cache_rules,
1,
NULL, /* start */
print_icache_definition, /* leaf */
NULL, /* end */
NULL); /* padding */
else
insn_table_traverse_insn(table,
file, cache_rules,
print_icache_definition);
}
else {
lf_print__this_file_is_empty(file);
}
}
/****************************************************************/
int
main(int argc,
char **argv,
char **envp)
{
cache_table *cache_rules = NULL;
lf_file_references file_references = lf_include_references;
decode_table *decode_rules = NULL;
filter *filters = NULL;
insn_table *instructions = NULL;
table_include *includes = NULL;
char *real_file_name = NULL;
int is_header = 0;
int ch;
if (argc == 1) {
printf("Usage:\n");
printf(" igen <config-opts> ... <input-opts>... <output-opts>...\n");
printf("Config options:\n");
printf(" -F <filter-out-flag> eg -F 64 to skip 64bit instructions\n");
printf(" -E Expand (duplicate) semantic functions\n");
printf(" -I <icache-size> Generate cracking cache version\n");
printf(" -C Include semantics in cache functions\n");
printf(" -S Include insn (instruction) in icache\n");
printf(" -R Use defines to reference cache vars\n");
printf(" -L Supress line numbering in output files\n");
printf(" -B <bit-size> Set the number of bits in an instruction\n");
printf(" -H <high-bit> Set the nr of the high (msb bit)\n");
printf(" -N <nr-cpus> Specify the max number of cpus the simulation will support\n");
printf(" -J Use jumps instead of function calls\n");
printf(" -T <mechanism> Override the mechanism used to decode an instruction\n");
printf(" using <mechanism> instead of what was specified in the\n");
printf(" decode-rules input file\n");
printf("\n");
printf("Input options (ucase version also dumps loaded table):\n");
printf(" -o <decode-rules>\n");
printf(" -k <cache-rules>\n");
printf(" -i <instruction-table>\n");
printf("\n");
printf("Output options:\n");
printf(" -n <real-name> Specify the real name of for the next output file\n");
printf(" -h Generate header file\n");
printf(" -c <output-file> output icache\n");
printf(" -d <output-file> output idecode\n");
printf(" -m <output-file> output model\n");
printf(" -s <output-file> output schematic\n");
printf(" -t <output-file> output itable\n");
printf(" -f <output-file> output support functions\n");
}
while ((ch = getopt(argc, argv,
"F:EI:RSLJT:CB:H:N:o:k:i:n:hc:d:m:s:t:f:"))
!= -1) {
fprintf(stderr, "\t-%c %s\n", ch, (optarg ? optarg : ""));
switch(ch) {
case 'C':
code |= generate_with_icache;
code |= generate_with_semantic_icache;
break;
case 'S':
code |= generate_with_icache;
code |= generate_with_insn_in_icache;
break;
case 'L':
file_references = lf_omit_references;
break;
case 'E':
generate_expanded_instructions = 1;
break;
case 'G':
{
int enable_p;
char *argp;
if (strncmp (optarg, "no-", strlen ("no-")) == 0)
{
argp = optarg + strlen ("no-");
enable_p = 0;
}
else if (strncmp (optarg, "!", strlen ("!")) == 0)
{
argp = optarg + strlen ("no-");
enable_p = 0;
}
else
{
argp = optarg;
enable_p = 1;
}
if (strncmp (argp, "gen-icache", strlen ("gen-icache")) == 0)
{
switch (argp[strlen ("gen-icache")])
{
case '=':
icache_size = atoi (argp + strlen ("gen-icache") + 1);
code |= generate_with_icache;
break;
case '\0':
code |= generate_with_icache;
break;
default:
error (NULL, "Expecting -Ggen-icache or -Ggen-icache=<N>\n");
}
}
}
case 'I':
{
table_include **dir = &includes;
while ((*dir) != NULL)
dir = &(*dir)->next;
(*dir) = ZALLOC (table_include);
(*dir)->dir = strdup (optarg);
}
break;
case 'N':
generate_smp = a2i(optarg);
break;
case 'R':
code |= generate_with_direct_access;
break;
case 'B':
insn_bit_size = a2i(optarg);
ASSERT(insn_bit_size > 0 && insn_bit_size <= max_insn_bit_size
&& (hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0));
break;
case 'H':
hi_bit_nr = a2i(optarg);
ASSERT(hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0);
break;
case 'F':
filters = new_filter(optarg, filters);
break;
case 'J':
code &= ~generate_calls;
code |= generate_jumps;
break;
case 'T':
force_decode_gen_type(optarg);
break;
case 'i':
if (decode_rules == NULL) {
fprintf(stderr, "Must specify decode tables\n");
exit (1);
}
instructions = load_insn_table(optarg, decode_rules, filters, includes,
&cache_rules);
fprintf(stderr, "\texpanding ...\n");
insn_table_expand_insns(instructions);
break;
case 'o':
decode_rules = load_decode_table(optarg, hi_bit_nr);
break;
case 'k':
cache_rules = load_cache_table(optarg, hi_bit_nr);
break;
case 'n':
real_file_name = strdup(optarg);
break;
case 'h':
is_header = 1;
break;
case 's':
case 'd':
case 'm':
case 't':
case 'f':
case 'c':
{
lf *file = lf_open(optarg, real_file_name, file_references,
(is_header ? lf_is_h : lf_is_c),
argv[0]);
lf_print__file_start(file);
ASSERT(instructions != NULL);
switch (ch) {
case 's':
if(is_header)
gen_semantics_h(instructions, file, code);
else
gen_semantics_c(instructions, cache_rules, file, code);
break;
case 'd':
if (is_header)
gen_idecode_h(file, instructions, cache_rules);
else
gen_idecode_c(file, instructions, cache_rules);
break;
case 'm':
if (is_header)
gen_model_h(instructions, file);
else
gen_model_c(instructions, file);
break;
case 't':
if (is_header)
gen_itable_h(instructions, file);
else
gen_itable_c(instructions, file);
break;
case 'f':
if (is_header)
gen_support_h(instructions, file);
else
gen_support_c(instructions, file);
break;
case 'c':
if (is_header)
gen_icache_h(instructions, file, code);
else
gen_icache_c(instructions, cache_rules, file, code);
break;
}
lf_print__file_finish(file);
lf_close(file);
is_header = 0;
}
real_file_name = NULL;
break;
default:
error("unknown option\n");
}
}
return 0;
}
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