-/* This file is part of the program psim.
+/* The IGEN simulator generator for GDB, the GNU Debugger.
- Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
+ Copyright 2002-2020 Free Software Foundation, Inc.
- 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.
+ Contributed by Andrew Cagney.
- 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.
-
- */
+ This file is part of GDB.
+
+ 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 "lf.h"
#include "table.h"
#include "filter.h"
+#include "igen.h"
-#include "ld-decode.h"
-#include "ld-cache.h"
#include "ld-insn.h"
+#include "ld-decode.h"
-#include "igen.h"
+#include "gen.h"
#include "gen-semantics.h"
#include "gen-icache.h"
static void
-print_semantic_function_header(lf *file,
- const char *basename,
- insn_bits *expanded_bits,
- int is_function_definition)
+print_semantic_function_header (lf *file,
+ const char *basename,
+ const char *format_name,
+ opcode_bits *expanded_bits,
+ int is_function_definition,
+ int nr_prefetched_words)
{
int indent;
- lf_printf(file, "\n");
- lf_print_function_type_function(file, print_semantic_function_type, "EXTERN_SEMANTICS",
- (is_function_definition ? "\n" : " "));
- indent = print_function_name(file,
- basename,
- expanded_bits,
- function_name_prefix_semantics);
+ lf_printf (file, "\n");
+ lf_print__function_type_function (file, print_semantic_function_type,
+ "EXTERN_SEMANTICS",
+ (is_function_definition ? "\n" : " "));
+ indent = print_function_name (file,
+ basename,
+ format_name,
+ NULL,
+ expanded_bits,
+ function_name_prefix_semantics);
if (is_function_definition)
- lf_indent(file, +indent);
+ {
+ indent += lf_printf (file, " ");
+ lf_indent (file, +indent);
+ }
else
- lf_printf(file, "\n");
- lf_printf(file, "(");
- print_semantic_function_formal(file);
- lf_printf(file, ")");
+ {
+ lf_printf (file, "\n");
+ }
+ lf_printf (file, "(");
+ lf_indent (file, +1);
+ print_semantic_function_formal (file, nr_prefetched_words);
+ lf_indent (file, -1);
+ lf_printf (file, ")");
if (is_function_definition)
- lf_indent(file, -indent);
+ {
+ lf_indent (file, -indent);
+ }
else
- lf_printf(file, ";");
- lf_printf(file, "\n");
+ {
+ lf_printf (file, ";");
+ }
+ lf_printf (file, "\n");
}
void
-print_semantic_declaration(insn_table *entry,
- lf *file,
- void *data,
- insn *instruction,
- int depth)
+print_semantic_declaration (lf *file,
+ insn_entry * insn,
+ opcode_bits *expanded_bits,
+ insn_opcodes *opcodes, int nr_prefetched_words)
{
- if (generate_expanded_instructions) {
- ASSERT(entry->nr_insn == 1);
- print_semantic_function_header(file,
- instruction->file_entry->fields[insn_name],
- entry->expanded_bits,
- 0/* is not function definition*/);
- }
- else {
- print_semantic_function_header(file,
- instruction->file_entry->fields[insn_name],
- NULL,
- 0/* is not function definition*/);
- }
+ print_semantic_function_header (file,
+ insn->name,
+ insn->format_name,
+ expanded_bits,
+ 0 /* is not function definition */ ,
+ nr_prefetched_words);
}
+\f
-\f
/* generate the semantics.c file */
void
-print_idecode_invalid(lf *file,
- const char *result,
- invalid_type type)
+print_idecode_invalid (lf *file, const char *result, invalid_type type)
{
const char *name;
- switch (type) {
- default: name = "unknown"; break;
- case invalid_illegal: name = "illegal"; break;
- case invalid_fp_unavailable: name = "fp_unavailable"; break;
- case invalid_wrong_slot: name = "wrong_slot"; break;
- }
- if ((code & generate_jumps))
- lf_printf(file, "goto %s_%s;\n",
- (code & generate_with_icache) ? "icache" : "semantic",
- name);
- else if ((code & generate_with_icache)) {
- lf_printf(file, "%s %sicache_%s(", result, global_name_prefix, name);
- print_icache_function_actual(file);
- lf_printf(file, ");\n");
- }
- else {
- lf_printf(file, "%s %ssemantic_%s(", result, global_name_prefix, name);
- print_semantic_function_actual(file);
- lf_printf(file, ");\n");
- }
+ switch (type)
+ {
+ default:
+ name = "unknown";
+ break;
+ case invalid_illegal:
+ name = "illegal";
+ break;
+ case invalid_fp_unavailable:
+ name = "fp_unavailable";
+ break;
+ case invalid_wrong_slot:
+ name = "wrong_slot";
+ break;
+ }
+ if (options.gen.code == generate_jumps)
+ {
+ lf_printf (file, "goto %s_%s;\n",
+ (options.gen.icache ? "icache" : "semantic"), name);
+ }
+ else if (options.gen.icache)
+ {
+ lf_printf (file, "%s %sicache_%s (", result,
+ options.module.global.prefix.l, name);
+ print_icache_function_actual (file, 0);
+ lf_printf (file, ");\n");
+ }
+ else
+ {
+ lf_printf (file, "%s %ssemantic_%s (", result,
+ options.module.global.prefix.l, name);
+ print_semantic_function_actual (file, 0);
+ lf_printf (file, ");\n");
+ }
}
void
-print_semantic_body(lf *file,
- insn *instruction,
- insn_bits *expanded_bits,
- opcode_field *opcodes)
+print_semantic_body (lf *file,
+ insn_entry * instruction,
+ opcode_bits *expanded_bits, insn_opcodes *opcodes)
{
- print_itrace(file, instruction->file_entry, 0/*put_value_in_cache*/);
-
/* validate the instruction, if a cache this has already been done */
- if (!(code & generate_with_icache))
- print_idecode_validate(file, instruction, opcodes);
+ if (!options.gen.icache)
+ {
+ print_idecode_validate (file, instruction, opcodes);
+ }
+
+ print_itrace (file, instruction, 0 /*put_value_in_cache */ );
+
+ /* generate the instruction profile call - this is delayed until
+ after the instruction has been verified. The count macro
+ generated is prefixed by ITABLE_PREFIX */
+ {
+ lf_printf (file, "\n");
+ lf_indent_suppress (file);
+ lf_printf (file, "#if defined (%sPROFILE_COUNT_INSN)\n",
+ options.module.itable.prefix.u);
+ lf_printf (file, "%sPROFILE_COUNT_INSN (CPU, CIA, MY_INDEX);\n",
+ options.module.itable.prefix.u);
+ lf_indent_suppress (file);
+ lf_printf (file, "#endif\n");
+ }
- /* generate the profiling call - this is delayed until after the
+ /* generate the model call - this is delayed until after the
instruction has been verified */
- lf_printf(file, "\n");
- lf_indent_suppress(file);
- lf_printf(file, "#if defined(WITH_MON)\n");
- lf_printf(file, "/* monitoring: */\n");
- lf_printf(file, "if (WITH_MON & MONITOR_INSTRUCTION_ISSUE) {\n");
- lf_printf(file, " mon_issue(");
- print_function_name(file,
- instruction->file_entry->fields[insn_name],
- NULL,
- function_name_prefix_itable);
- lf_printf(file, ", cpu, cia);\n");
- lf_printf(file, "}\n");
- lf_indent_suppress(file);
- lf_printf(file, "#endif\n");
- lf_printf(file, "\n");
+ {
+ lf_printf (file, "\n");
+ lf_indent_suppress (file);
+ lf_printf (file, "#if defined (WITH_MON)\n");
+ lf_printf (file, "/* monitoring: */\n");
+ lf_printf (file, "if (WITH_MON & MONITOR_INSTRUCTION_ISSUE)\n");
+ lf_printf (file, " mon_issue (");
+ print_function_name (file,
+ instruction->name,
+ instruction->format_name,
+ NULL, NULL, function_name_prefix_itable);
+ lf_printf (file, ", cpu, cia);\n");
+ lf_indent_suppress (file);
+ lf_printf (file, "#endif\n");
+ lf_printf (file, "\n");
+ }
/* determine the new instruction address */
- lf_printf(file, "/* keep the next instruction address handy */\n");
- if ((code & generate_with_semantic_returning_modified_nia_only))
- lf_printf(file, "nia = -1;\n");
- else if ((code & generate_with_semantic_delayed_branch)) {
- lf_printf(file, "nia.ip = cia.dp; /* instruction pointer */\n");
- lf_printf(file, "nia.dp = cia.dp + %d; /* delayed-slot pointer */\n",
- insn_bit_size / 8);
+ {
+ lf_printf (file, "/* keep the next instruction address handy */\n");
+ if (options.gen.nia == nia_is_invalid)
+ {
+ lf_printf (file, "nia = %sINVALID_INSTRUCTION_ADDRESS;\n",
+ options.module.global.prefix.u);
+ }
+ else
+ {
+ int nr_immeds = instruction->nr_words - 1;
+ if (options.gen.delayed_branch)
+ {
+ if (nr_immeds > 0)
+ {
+ lf_printf (file, "cia.dp += %d * %d; %s\n",
+ options.insn_bit_size / 8, nr_immeds,
+ "/* skip dp immeds */");
+ }
+ lf_printf (file, "nia.ip = cia.dp; %s\n",
+ "/* instruction pointer */");
+ lf_printf (file, "nia.dp = cia.dp + %d; %s\n",
+ options.insn_bit_size / 8,
+ "/* delayed-slot pointer */");
+ }
+ else
+ {
+ if (nr_immeds > 0)
+ {
+ lf_printf (file, "nia = cia + %d * (%d + 1); %s\n",
+ options.insn_bit_size / 8, nr_immeds,
+ "/* skip immeds as well */");
+
+ }
+ else
+ {
+ lf_printf (file, "nia = cia + %d;\n",
+ options.insn_bit_size / 8);
+ }
+ }
+ }
}
- else
- lf_printf(file, "nia = cia + %d;\n", insn_bit_size / 8);
/* if conditional, generate code to verify that the instruction
should be issued */
- if (it_is("c", instruction->file_entry->fields[insn_options])
- || (code & generate_with_semantic_conditional_issue)) {
- lf_printf(file, "\n");
- lf_printf(file, "/* execute only if conditional passes */\n");
- lf_printf(file, "if (IS_CONDITION_OK) {\n");
- lf_indent(file, +2);
- /* FIXME - need to log a conditional failure */
- }
-
+ if (filter_is_member (instruction->options, "c")
+ || options.gen.conditional_issue)
+ {
+ lf_printf (file, "\n");
+ lf_printf (file, "/* execute only if conditional passes */\n");
+ lf_printf (file, "if (IS_CONDITION_OK)\n");
+ lf_printf (file, " {\n");
+ lf_indent (file, +4);
+ /* FIXME - need to log a conditional failure */
+ }
+
+ /* Architecture expects a REG to be zero. Instead of having to
+ check every read to see if it is refering to that REG just zap it
+ at the start of every instruction */
+ if (options.gen.zero_reg)
+ {
+ lf_printf (file, "\n");
+ lf_printf (file, "/* Architecture expects REG to be zero */\n");
+ lf_printf (file, "GPR_CLEAR(%d);\n", options.gen.zero_reg_nr);
+ }
+
/* generate the code (or at least something */
- lf_printf(file, "\n");
- lf_printf(file, "/* semantics: */\n");
- if (instruction->file_entry->annex != NULL) {
- /* true code */
- table_entry_print_cpp_line_nr(file, instruction->file_entry);
- lf_printf(file, "{\n");
- lf_indent(file, +2);
- lf_print__c_code(file, instruction->file_entry->annex);
- lf_indent(file, -2);
- lf_printf(file, "}\n");
- lf_print__internal_reference(file);
- }
- else if (it_is("nop", instruction->file_entry->fields[insn_flags])) {
- lf_print__internal_reference(file);
- }
- else {
- /* abort so it is implemented now */
- table_entry_print_cpp_line_nr(file, instruction->file_entry);
- lf_printf(file, "engine_error (SD, CPU, cia, \"%s:%d:0x%%08lx:%%s unimplemented\\n\",\n",
- filter_filename(instruction->file_entry->file_name),
- instruction->file_entry->line_nr);
- if ((code & generate_with_semantic_delayed_branch))
- lf_printf(file, " (long)cia.ip,\n");
- else
- lf_printf(file, " (long)cia,\n");
- lf_printf(file, " itable[MY_INDEX].name);\n");
- lf_print__internal_reference(file);
- }
+ lf_printf (file, "\n");
+ lf_printf (file, "/* semantics: */\n");
+ if (instruction->code != NULL)
+ {
+ /* true code */
+ lf_printf (file, "{\n");
+ lf_indent (file, +2);
+ lf_print__line_ref (file, instruction->code->line);
+ table_print_code (file, instruction->code);
+ lf_indent (file, -2);
+ lf_printf (file, "}\n");
+ lf_print__internal_ref (file);
+ }
+ else if (filter_is_member (instruction->options, "nop"))
+ {
+ lf_print__internal_ref (file);
+ }
+ else
+ {
+ const char *prefix = "sim_engine_abort (";
+ int indent = strlen (prefix);
+ /* abort so it is implemented now */
+ lf_print__line_ref (file, instruction->line);
+ lf_printf (file, "%sSD, CPU, cia, \\\n", prefix);
+ lf_indent (file, +indent);
+ lf_printf (file, "\"%s:%d:0x%%08lx:%%s unimplemented\\n\", \\\n",
+ filter_filename (instruction->line->file_name),
+ instruction->line->line_nr);
+ lf_printf (file, "(long) CIA, \\\n");
+ lf_printf (file, "%sitable[MY_INDEX].name);\n",
+ options.module.itable.prefix.l);
+ lf_indent (file, -indent);
+ lf_print__internal_ref (file);
+ }
/* Close off the conditional execution */
- if (it_is("c", instruction->file_entry->fields[insn_options])
- || (code & generate_with_semantic_conditional_issue)) {
- lf_indent(file, -2);
- lf_printf(file, "}\n");
- }
+ if (filter_is_member (instruction->options, "c")
+ || options.gen.conditional_issue)
+ {
+ lf_indent (file, -4);
+ lf_printf (file, " }\n");
+ }
}
static void
-print_c_semantic(lf *file,
- insn *instruction,
- insn_bits *expanded_bits,
- opcode_field *opcodes,
- cache_table *cache_rules)
+print_c_semantic (lf *file,
+ insn_entry * instruction,
+ opcode_bits *expanded_bits,
+ insn_opcodes *opcodes,
+ cache_entry *cache_rules, int nr_prefetched_words)
{
- lf_printf(file, "{\n");
- lf_indent(file, +2);
+ lf_printf (file, "{\n");
+ lf_indent (file, +2);
- print_my_defines(file, expanded_bits, instruction->file_entry);
- lf_printf(file, "\n");
- print_icache_body(file,
- instruction,
- expanded_bits,
- cache_rules,
- ((code & generate_with_direct_access)
- ? define_variables
- : declare_variables),
- ((code & generate_with_icache)
- ? get_values_from_icache
- : do_not_use_icache));
-
- lf_printf(file, "%sinstruction_address nia;\n", global_name_prefix);
- print_semantic_body(file,
- instruction,
- expanded_bits,
- opcodes);
- lf_printf(file, "return nia;\n");
+ print_my_defines (file,
+ instruction->name,
+ instruction->format_name, expanded_bits);
+ lf_printf (file, "\n");
+ print_icache_body (file,
+ instruction,
+ expanded_bits,
+ cache_rules,
+ (options.gen.direct_access
+ ? define_variables
+ : declare_variables),
+ (options.gen.icache
+ ? get_values_from_icache
+ : do_not_use_icache), nr_prefetched_words);
+
+ lf_printf (file, "%sinstruction_address nia;\n",
+ options.module.global.prefix.l);
+ print_semantic_body (file, instruction, expanded_bits, opcodes);
+ lf_printf (file, "return nia;\n");
/* generate something to clean up any #defines created for the cache */
- if (code & generate_with_direct_access)
- print_icache_body(file,
- instruction,
- expanded_bits,
- cache_rules,
- undef_variables,
- ((code & generate_with_icache)
- ? get_values_from_icache
- : do_not_use_icache));
-
- lf_indent(file, -2);
- lf_printf(file, "}\n");
+ if (options.gen.direct_access)
+ {
+ print_icache_body (file,
+ instruction,
+ expanded_bits,
+ cache_rules,
+ undef_variables,
+ (options.gen.icache
+ ? get_values_from_icache
+ : do_not_use_icache), nr_prefetched_words);
+ }
+
+ lf_indent (file, -2);
+ lf_printf (file, "}\n");
}
static void
-print_c_semantic_function(lf *file,
- insn *instruction,
- insn_bits *expanded_bits,
- opcode_field *opcodes,
- cache_table *cache_rules)
+print_c_semantic_function (lf *file,
+ insn_entry * instruction,
+ opcode_bits *expanded_bits,
+ insn_opcodes *opcodes,
+ cache_entry *cache_rules, int nr_prefetched_words)
{
/* build the semantic routine to execute the instruction */
- print_semantic_function_header(file,
- instruction->file_entry->fields[insn_name],
- expanded_bits,
- 1/*is-function-definition*/);
- print_c_semantic(file,
- instruction,
- expanded_bits,
- opcodes,
- cache_rules);
+ print_semantic_function_header (file,
+ instruction->name,
+ instruction->format_name,
+ expanded_bits,
+ 1 /*is-function-definition */ ,
+ nr_prefetched_words);
+ print_c_semantic (file,
+ instruction,
+ expanded_bits, opcodes, cache_rules, nr_prefetched_words);
}
void
-print_semantic_definition(insn_table *entry,
- lf *file,
- void *data,
- insn *instruction,
- int depth)
+print_semantic_definition (lf *file,
+ insn_entry * insn,
+ opcode_bits *expanded_bits,
+ insn_opcodes *opcodes,
+ cache_entry *cache_rules, int nr_prefetched_words)
{
- cache_table *cache_rules = (cache_table*)data;
- if (generate_expanded_instructions) {
- ASSERT(entry->nr_insn == 1
- && entry->opcode == NULL
- && entry->parent != NULL
- && entry->parent->opcode != NULL);
- ASSERT(entry->nr_insn == 1
- && entry->opcode == NULL
- && entry->parent != NULL
- && entry->parent->opcode != NULL
- && entry->parent->opcode_rule != NULL);
- print_c_semantic_function(file,
- entry->insns,
- entry->expanded_bits,
- entry->parent->opcode,
- cache_rules);
- }
- else {
- print_c_semantic_function(file, instruction,
- NULL, NULL,
- cache_rules);
- }
+ print_c_semantic_function (file,
+ insn,
+ expanded_bits,
+ opcodes, cache_rules, nr_prefetched_words);
}
projects / deliverable / binutils-gdb.git / blobdiff