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-rw-r--r--sim/igen/gen-semantics.c381
1 files changed, 0 insertions, 381 deletions
diff --git a/sim/igen/gen-semantics.c b/sim/igen/gen-semantics.c
deleted file mode 100644
index 44a3c52..0000000
--- a/sim/igen/gen-semantics.c
+++ /dev/null
@@ -1,381 +0,0 @@
-/* The IGEN simulator generator for GDB, the GNU Debugger.
-
- Copyright 2002 Free Software Foundation, Inc.
-
- Contributed by Andrew Cagney.
-
- 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 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-
-
-#include "misc.h"
-#include "lf.h"
-#include "table.h"
-#include "filter.h"
-#include "igen.h"
-
-#include "ld-insn.h"
-#include "ld-decode.h"
-
-#include "gen.h"
-
-#include "gen-semantics.h"
-#include "gen-icache.h"
-#include "gen-idecode.h"
-
-
-static void
-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,
- format_name,
- NULL,
- expanded_bits,
- function_name_prefix_semantics);
- if (is_function_definition)
- {
- indent += lf_printf (file, " ");
- lf_indent (file, +indent);
- }
- else
- {
- 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);
- }
- else
- {
- lf_printf (file, ";");
- }
- lf_printf (file, "\n");
-}
-
-void
-print_semantic_declaration (lf *file,
- insn_entry * insn,
- opcode_bits *expanded_bits,
- insn_opcodes *opcodes, int nr_prefetched_words)
-{
- print_semantic_function_header (file,
- insn->name,
- insn->format_name,
- expanded_bits,
- 0 /* is not function definition */ ,
- nr_prefetched_words);
-}
-
-
-
-/* generate the semantics.c file */
-
-
-void
-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 (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_entry * instruction,
- opcode_bits *expanded_bits, insn_opcodes *opcodes)
-{
- /* validate the instruction, if a cache this has already been done */
- 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 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->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 (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);
- }
- }
- }
- }
-
- /* if conditional, generate code to verify that the instruction
- should be issued */
- 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->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 (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_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);
-
- 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 (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_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->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 (lf *file,
- insn_entry * insn,
- opcode_bits *expanded_bits,
- insn_opcodes *opcodes,
- cache_entry *cache_rules, int nr_prefetched_words)
-{
- print_c_semantic_function (file,
- insn,
- expanded_bits,
- opcodes, cache_rules, nr_prefetched_words);
-}
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