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[/] [or1k/] [trunk/] [gdb-5.3/] [sim/] [igen/] [igen.c] - Rev 1773
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/* 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 <getopt.h> #include "misc.h" #include "lf.h" #include "table.h" #include "config.h" #include "filter.h" #include "igen.h" #include "ld-insn.h" #include "ld-decode.h" #include "ld-cache.h" #include "gen.h" #include "gen-model.h" #include "gen-icache.h" #include "gen-itable.h" #include "gen-idecode.h" #include "gen-semantics.h" #include "gen-engine.h" #include "gen-support.h" #include "gen-engine.h" /****************************************************************/ /* Semantic functions */ int print_semantic_function_formal (lf *file, int nr_prefetched_words) { int nr = 0; int word_nr; if (options.gen.icache || nr_prefetched_words < 0) { nr += lf_printf (file, "SIM_DESC sd,\n"); nr += lf_printf (file, "%sidecode_cache *cache_entry,\n", options.module.global.prefix.l); nr += lf_printf (file, "%sinstruction_address cia", options.module.global.prefix.l); } else if (options.gen.smp) { nr += lf_printf (file, "sim_cpu *cpu,\n"); for (word_nr = 0; word_nr < nr_prefetched_words; word_nr++) { nr += lf_printf (file, "%sinstruction_word instruction_%d,\n", options.module.global.prefix.l, word_nr); } nr += lf_printf (file, "%sinstruction_address cia", options.module.global.prefix.l); } else { nr += lf_printf (file, "SIM_DESC sd,\n"); for (word_nr = 0; word_nr < nr_prefetched_words; word_nr++) { nr += lf_printf (file, "%sinstruction_word instruction_%d,\n", options.module.global.prefix.l, word_nr); } nr += lf_printf (file, "%sinstruction_address cia", options.module.global.prefix.l); } return nr; } int print_semantic_function_actual (lf *file, int nr_prefetched_words) { int nr = 0; int word_nr; if (options.gen.icache || nr_prefetched_words < 0) { nr += lf_printf (file, "sd, cache_entry, cia"); } else { if (options.gen.smp) nr += lf_printf (file, "cpu"); else nr += lf_printf (file, "sd"); for (word_nr = 0; word_nr < nr_prefetched_words; word_nr++) nr += lf_printf (file, ", instruction_%d", word_nr); nr += lf_printf (file, ", cia"); } return nr; } int print_semantic_function_type (lf *file) { int nr = 0; nr += lf_printf (file, "%sinstruction_address", options.module.global.prefix.l); return nr; } /* Idecode functions */ int print_icache_function_formal (lf *file, int nr_prefetched_words) { int nr = 0; int word_nr; if (options.gen.smp) nr += lf_printf (file, "sim_cpu *cpu,\n"); else nr += lf_printf (file, "SIM_DESC sd,\n"); for (word_nr = 0; word_nr < nr_prefetched_words; word_nr++) nr += lf_printf (file, " %sinstruction_word instruction_%d,\n", options.module.global.prefix.l, word_nr); nr += lf_printf (file, " %sinstruction_address cia,\n", options.module.global.prefix.l); nr += lf_printf (file, " %sidecode_cache *cache_entry", options.module.global.prefix.l); return nr; } int print_icache_function_actual (lf *file, int nr_prefetched_words) { int nr = 0; int word_nr; if (options.gen.smp) nr += lf_printf (file, "cpu"); else nr += lf_printf (file, "sd"); for (word_nr = 0; word_nr < nr_prefetched_words; word_nr++) nr += lf_printf (file, ", instruction_%d", word_nr); nr += lf_printf (file, ", cia, cache_entry"); return nr; } int print_icache_function_type (lf *file) { int nr; if (options.gen.semantic_icache) { nr = print_semantic_function_type (file); } else { nr = lf_printf (file, "%sidecode_semantic *", options.module.global.prefix.l); } return nr; } /* Function names */ static int print_opcode_bits (lf *file, opcode_bits *bits) { int nr = 0; if (bits == NULL) return nr; 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); } nr += print_opcode_bits (file, bits->next); return nr; } static int print_c_name (lf *file, const char *name) { int nr = 0; const char *pos; for (pos = name; *pos != '\0'; pos++) { switch (*pos) { case '/': case '-': break; case ' ': case '.': nr += lf_putchr (file, '_'); break; default: nr += lf_putchr (file, *pos); break; } } return nr; } extern int print_function_name (lf *file, const char *basename, const char *format_name, const char *model_name, opcode_bits *expanded_bits, lf_function_name_prefixes prefix) { int nr = 0; /* the prefix */ switch (prefix) { case function_name_prefix_semantics: nr += lf_printf (file, "%s", options.module.semantics.prefix.l); nr += lf_printf (file, "semantic_"); break; case function_name_prefix_idecode: nr += lf_printf (file, "%s", options.module.idecode.prefix.l); nr += lf_printf (file, "idecode_"); break; case function_name_prefix_itable: nr += lf_printf (file, "%sitable_", options.module.itable.prefix.l); break; case function_name_prefix_icache: nr += lf_printf (file, "%s", options.module.icache.prefix.l); nr += lf_printf (file, "icache_"); break; case function_name_prefix_engine: nr += lf_printf (file, "%s", options.module.engine.prefix.l); nr += lf_printf (file, "engine_"); default: break; } if (model_name != NULL) { nr += print_c_name (file, model_name); nr += lf_printf (file, "_"); } /* the function name */ nr += print_c_name (file, basename); /* the format name if available */ if (format_name != NULL) { nr += lf_printf (file, "_"); nr += print_c_name (file, format_name); } /* the suffix */ nr += print_opcode_bits (file, expanded_bits); return nr; } void print_my_defines (lf *file, const char *basename, const char *format_name, opcode_bits *expanded_bits) { /* #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, basename, format_name, NULL, NULL, function_name_prefix_itable); lf_printf (file, "\n"); /* #define MY_PREFIX xxxxxx */ lf_indent_suppress (file); lf_printf (file, "#undef "); print_function_name (file, basename, format_name, NULL, expanded_bits, function_name_prefix_none); lf_printf (file, "\n"); 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, basename, format_name, NULL, expanded_bits, function_name_prefix_none); lf_printf (file, "\n"); /* #define MY_NAME xxxxxx */ lf_indent_suppress (file); lf_indent_suppress (file); lf_printf (file, "#undef MY_NAME\n"); lf_indent_suppress (file); lf_printf (file, "#define MY_NAME \""); print_function_name (file, basename, format_name, NULL, expanded_bits, function_name_prefix_none); lf_printf (file, "\"\n"); } static int print_itrace_prefix (lf *file) { const char *prefix = "trace_prefix ("; int indent = strlen (prefix); lf_printf (file, "%sSD, CPU, cia, CIA, TRACE_LINENUM_P (CPU), \\\n", prefix); lf_indent (file, +indent); lf_printf (file, "%sitable[MY_INDEX].file, \\\n", options.module.itable.prefix.l); lf_printf (file, "%sitable[MY_INDEX].line_nr, \\\n", options.module.itable.prefix.l); lf_printf (file, "\""); return indent; } static void print_itrace_format (lf *file, insn_mnemonic_entry *assembler) { /* pass=1 is fmt string; pass=2 is arguments */ int pass; /* print the format string */ for (pass = 1; pass <= 2; pass++) { const char *chp = assembler->format; chp++; /* skip the leading quote */ /* write out the format/args */ while (*chp != '\0') { if (chp[0] == '\\' && (chp[1] == '<' || chp[1] == '>')) { if (pass == 1) lf_putchr (file, chp[1]); chp += 2; } else if (chp[0] == '<' || chp[0] == '%') { /* parse [ "%" ... ] "<" [ func "#" ] param ">" */ const char *fmt; const char *func; int strlen_func; const char *param; int strlen_param; /* the "%" ... "<" format */ fmt = chp; while (chp[0] != '<' && chp[0] != '\0') chp++; if (chp[0] != '<') error (assembler->line, "Missing `<' after `%%'\n"); chp++; /* [ "func" # ] OR "param" */ func = chp; param = chp; while (chp[0] != '>' && chp[0] != '#' && chp[0] != '\0') chp++; strlen_func = chp - func; if (chp[0] == '#') { chp++; param = chp; while (chp[0] != '>' && chp[0] != '\0') chp++; } strlen_param = chp - param; if (chp[0] != '>') error (assembler->line, "Missing closing `>' in assembler string\n"); chp++; /* now process it */ if (pass == 2) lf_printf (file, ", \\\n"); if (strncmp (fmt, "<", 1) == 0) /* implicit long int format */ { if (pass == 1) lf_printf (file, "%%ld"); else { lf_printf (file, "(long) "); lf_write (file, param, strlen_param); } } else if (strncmp (fmt, "%<", 2) == 0) /* explicit format */ { if (pass == 1) lf_printf (file, "%%"); else lf_write (file, param, strlen_param); } else if (strncmp (fmt, "%s<", 3) == 0) /* string format */ { if (pass == 1) lf_printf (file, "%%s"); else { lf_printf (file, "%sstr_", options.module.global.prefix.l); lf_write (file, func, strlen_func); lf_printf (file, " (SD_, "); lf_write (file, param, strlen_param); lf_printf (file, ")"); } } else if (strncmp (fmt, "%lx<", 4) == 0) /* simple hex */ { if (pass == 1) lf_printf (file, "%%lx"); else { lf_printf (file, "(unsigned long) "); lf_write (file, param, strlen_param); } } else if (strncmp (fmt, "%#lx<", 5) == 0) /* simple hex with 0x prefix */ { if (pass == 1) lf_printf (file, "%%#lx"); else { lf_printf (file, "(unsigned long) "); lf_write (file, param, strlen_param); } } else if (strncmp (fmt, "%08lx<", 6) == 0) /* simple hex */ { if (pass == 1) lf_printf (file, "%%08lx"); else { lf_printf (file, "(unsigned long) "); lf_write (file, param, strlen_param); } } else error (assembler->line, "Unknown assembler string format\n"); } else { if (pass == 1) lf_putchr (file, chp[0]); chp += 1; } } } lf_printf (file, ");\n"); } void print_itrace (lf *file, insn_entry * insn, int idecode) { /* NB: Here we escape each EOLN. This is so that the the compiler treats a trace function call as a single line. Consequently any errors in the line are refered back to the same igen assembler source line */ const char *phase = (idecode) ? "DECODE" : "INSN"; lf_printf (file, "\n"); lf_indent_suppress (file); lf_printf (file, "#if defined (WITH_TRACE)\n"); lf_printf (file, "/* generate a trace prefix if any tracing enabled */\n"); lf_printf (file, "if (TRACE_ANY_P (CPU))\n"); lf_printf (file, " {\n"); lf_indent (file, +4); { if (insn->mnemonics != NULL) { insn_mnemonic_entry *assembler = insn->mnemonics; int is_first = 1; do { if (assembler->condition != NULL) { int indent; lf_printf (file, "%sif (%s)\n", is_first ? "" : "else ", assembler->condition); lf_indent (file, +2); lf_print__line_ref (file, assembler->line); indent = print_itrace_prefix (file); print_itrace_format (file, assembler); lf_print__internal_ref (file); lf_indent (file, -indent); lf_indent (file, -2); if (assembler->next == NULL) error (assembler->line, "Missing final unconditional assembler\n"); } else { int indent; if (!is_first) { lf_printf (file, "else\n"); lf_indent (file, +2); } lf_print__line_ref (file, assembler->line); indent = print_itrace_prefix (file); print_itrace_format (file, assembler); lf_print__internal_ref (file); lf_indent (file, -indent); if (!is_first) lf_indent (file, -2); if (assembler->next != NULL) error (assembler->line, "Unconditional assembler is not last\n"); } is_first = 0; assembler = assembler->next; } while (assembler != NULL); } else { int indent; lf_indent (file, +2); lf_print__line_ref (file, insn->line); indent = print_itrace_prefix (file); lf_printf (file, "%%s\", \\\n"); lf_printf (file, "itable[MY_INDEX].name);\n"); lf_print__internal_ref (file); lf_indent (file, -indent); lf_indent (file, -2); } lf_printf (file, "/* trace the instruction execution if enabled */\n"); lf_printf (file, "if (TRACE_%s_P (CPU))\n", phase); lf_printf (file, " trace_generic (SD, CPU, TRACE_%s_IDX, \" %%s\", itable[MY_INDEX].name);\n", phase); } lf_indent (file, -4); lf_printf (file, " }\n"); lf_indent_suppress (file); lf_printf (file, "#endif\n"); } void print_sim_engine_abort (lf *file, const char *message) { lf_printf (file, "sim_engine_abort (SD, CPU, cia, "); lf_printf (file, "\"%s\"", message); lf_printf (file, ");\n"); } void print_include (lf *file, igen_module module) { lf_printf (file, "#include \"%s%s.h\"\n", module.prefix.l, module.suffix.l); } void print_include_inline (lf *file, igen_module module) { lf_printf (file, "#if C_REVEALS_MODULE_P (%s_INLINE)\n", module.suffix.u); lf_printf (file, "#include \"%s%s.c\"\n", module.prefix.l, module.suffix.l); lf_printf (file, "#else\n"); print_include (file, module); lf_printf (file, "#endif\n"); lf_printf (file, "\n"); } void print_includes (lf *file) { lf_printf (file, "\n"); lf_printf (file, "#include \"sim-inline.c\"\n"); lf_printf (file, "\n"); print_include_inline (file, options.module.itable); print_include_inline (file, options.module.idecode); print_include_inline (file, options.module.support); } /****************************************************************/ static void gen_semantics_h (lf *file, insn_list *semantics, int max_nr_words) { int word_nr; insn_list *semantic; for (word_nr = -1; word_nr <= max_nr_words; word_nr++) { lf_printf (file, "typedef "); print_semantic_function_type (file); lf_printf (file, " %sidecode_semantic", options.module.global.prefix.l); if (word_nr >= 0) lf_printf (file, "_%d", word_nr); lf_printf (file, "\n("); lf_indent (file, +1); print_semantic_function_formal (file, word_nr); lf_indent (file, -1); lf_printf (file, ");\n"); lf_printf (file, "\n"); } switch (options.gen.code) { case generate_calls: for (semantic = semantics; semantic != NULL; semantic = semantic->next) { /* Ignore any special/internal instructions */ if (semantic->insn->nr_words == 0) continue; print_semantic_declaration (file, semantic->insn, semantic->expanded_bits, semantic->opcodes, semantic->nr_prefetched_words); } break; case generate_jumps: lf_print__this_file_is_empty (file, "generating jumps"); break; } } static void gen_semantics_c (lf *file, insn_list *semantics, cache_entry *cache_rules) { if (options.gen.code == generate_calls) { insn_list *semantic; print_includes (file); print_include (file, options.module.semantics); lf_printf (file, "\n"); for (semantic = semantics; semantic != NULL; semantic = semantic->next) { /* Ignore any special/internal instructions */ if (semantic->insn->nr_words == 0) continue; print_semantic_definition (file, semantic->insn, semantic->expanded_bits, semantic->opcodes, cache_rules, semantic->nr_prefetched_words); } } else { lf_print__this_file_is_empty (file, "generating jump engine"); } } /****************************************************************/ static void gen_icache_h (lf *file, insn_list *semantic, function_entry * functions, int max_nr_words) { int word_nr; for (word_nr = 0; word_nr <= max_nr_words; word_nr++) { lf_printf (file, "typedef "); print_icache_function_type (file); lf_printf (file, " %sidecode_icache_%d\n(", options.module.global.prefix.l, word_nr); print_icache_function_formal (file, word_nr); lf_printf (file, ");\n"); lf_printf (file, "\n"); } if (options.gen.code == generate_calls && options.gen.icache) { function_entry_traverse (file, functions, print_icache_internal_function_declaration, NULL); while (semantic != NULL) { print_icache_declaration (file, semantic->insn, semantic->expanded_bits, semantic->opcodes, semantic->nr_prefetched_words); semantic = semantic->next; } } else { lf_print__this_file_is_empty (file, "generating jump engine"); } } static void gen_icache_c (lf *file, insn_list *semantic, function_entry * functions, cache_entry *cache_rules) { /* output `internal' invalid/floating-point unavailable functions where needed */ if (options.gen.code == generate_calls && options.gen.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, "#include \"support.h\"\n"); lf_printf (file, "\n"); function_entry_traverse (file, functions, print_icache_internal_function_definition, NULL); lf_printf (file, "\n"); while (semantic != NULL) { print_icache_definition (file, semantic->insn, semantic->expanded_bits, semantic->opcodes, cache_rules, semantic->nr_prefetched_words); semantic = semantic->next; } } else { lf_print__this_file_is_empty (file, "generating jump engine"); } } /****************************************************************/ static void gen_idecode_h (lf *file, gen_table *gen, insn_table *insns, cache_entry *cache_rules) { lf_printf (file, "typedef unsigned%d %sinstruction_word;\n", options.insn_bit_size, options.module.global.prefix.l); if (options.gen.delayed_branch) { lf_printf (file, "typedef struct _%sinstruction_address {\n", options.module.global.prefix.l); lf_printf (file, " address_word ip; /* instruction pointer */\n"); lf_printf (file, " address_word dp; /* delayed-slot pointer */\n"); lf_printf (file, "} %sinstruction_address;\n", options.module.global.prefix.l); } else { lf_printf (file, "typedef address_word %sinstruction_address;\n", options.module.global.prefix.l); } if (options.gen.nia == nia_is_invalid && strlen (options.module.global.prefix.u) > 0) { lf_indent_suppress (file); lf_printf (file, "#define %sINVALID_INSTRUCTION_ADDRESS ", options.module.global.prefix.u); lf_printf (file, "INVALID_INSTRUCTION_ADDRESS\n"); } lf_printf (file, "\n"); print_icache_struct (file, insns, cache_rules); lf_printf (file, "\n"); if (options.gen.icache) { ERROR ("FIXME - idecode with icache suffering from bit-rot"); } else { gen_list *entry; for (entry = gen->tables; entry != NULL; entry = entry->next) { print_idecode_issue_function_header (file, (options.gen.multi_sim ? entry->model->name : NULL), is_function_declaration, 1 /*ALWAYS ONE WORD */ ); } if (options.gen.multi_sim) { print_idecode_issue_function_header (file, NULL, is_function_variable, 1 /*ALWAYS ONE WORD */ ); } } } static void gen_idecode_c (lf *file, gen_table *gen, insn_table *isa, cache_entry *cache_rules) { /* the intro */ print_includes (file); print_include_inline (file, options.module.semantics); lf_printf (file, "\n"); print_idecode_globals (file); lf_printf (file, "\n"); switch (options.gen.code) { case generate_calls: { gen_list *entry; for (entry = gen->tables; entry != NULL; entry = entry->next) { print_idecode_lookups (file, entry->table, cache_rules); /* output the main idecode routine */ if (!options.gen.icache) { print_idecode_issue_function_header (file, (options.gen.multi_sim ? entry->model->name : NULL), 1 /*is definition */ , 1 /*ALWAYS ONE WORD */ ); lf_printf (file, "{\n"); lf_indent (file, +2); lf_printf (file, "%sinstruction_address nia;\n", options.module.global.prefix.l); print_idecode_body (file, entry->table, "nia ="); lf_printf (file, "return nia;"); lf_indent (file, -2); lf_printf (file, "}\n"); } } break; } case generate_jumps: { lf_print__this_file_is_empty (file, "generating a jump engine"); break; } } } /****************************************************************/ static void gen_run_c (lf *file, gen_table *gen) { gen_list *entry; lf_printf (file, "#include \"sim-main.h\"\n"); lf_printf (file, "#include \"engine.h\"\n"); lf_printf (file, "#include \"idecode.h\"\n"); lf_printf (file, "#include \"bfd.h\"\n"); lf_printf (file, "\n"); if (options.gen.multi_sim) { print_idecode_issue_function_header (file, NULL, is_function_variable, 1); lf_printf (file, "\n"); print_engine_run_function_header (file, NULL, is_function_variable); lf_printf (file, "\n"); } lf_printf (file, "void\n"); lf_printf (file, "sim_engine_run (SIM_DESC sd,\n"); lf_printf (file, " int next_cpu_nr,\n"); lf_printf (file, " int nr_cpus,\n"); lf_printf (file, " int siggnal)\n"); lf_printf (file, "{\n"); lf_indent (file, +2); if (options.gen.multi_sim) { lf_printf (file, "int mach;\n"); lf_printf (file, "if (STATE_ARCHITECTURE (sd) == NULL)\n"); lf_printf (file, " mach = 0;\n"); lf_printf (file, "else\n"); lf_printf (file, " mach = STATE_ARCHITECTURE (sd)->mach;\n"); lf_printf (file, "switch (mach)\n"); lf_printf (file, " {\n"); lf_indent (file, +2); for (entry = gen->tables; entry != NULL; entry = entry->next) { if (options.gen.default_model != NULL && (strcmp (entry->model->name, options.gen.default_model) == 0 || strcmp (entry->model->full_name, options.gen.default_model) == 0)) lf_printf (file, "default:\n"); lf_printf (file, "case bfd_mach_%s:\n", entry->model->full_name); lf_indent (file, +2); print_function_name (file, "issue", NULL, /* format name */ NULL, /* NO processor */ NULL, /* expanded bits */ function_name_prefix_idecode); lf_printf (file, " = "); print_function_name (file, "issue", NULL, /* format name */ entry->model->name, NULL, /* expanded bits */ function_name_prefix_idecode); lf_printf (file, ";\n"); print_function_name (file, "run", NULL, /* format name */ NULL, /* NO processor */ NULL, /* expanded bits */ function_name_prefix_engine); lf_printf (file, " = "); print_function_name (file, "run", NULL, /* format name */ entry->model->name, NULL, /* expanded bits */ function_name_prefix_engine); lf_printf (file, ";\n"); lf_printf (file, "break;\n"); lf_indent (file, -2); } if (options.gen.default_model == NULL) { lf_printf (file, "default:\n"); lf_indent (file, +2); lf_printf (file, "sim_engine_abort (sd, NULL, NULL_CIA,\n"); lf_printf (file, " \"sim_engine_run - unknown machine\");\n"); lf_printf (file, "break;\n"); lf_indent (file, -2); } lf_indent (file, -2); lf_printf (file, " }\n"); } print_function_name (file, "run", NULL, /* format name */ NULL, /* NO processor */ NULL, /* expanded bits */ function_name_prefix_engine); lf_printf (file, " (sd, next_cpu_nr, nr_cpus, siggnal);\n"); lf_indent (file, -2); lf_printf (file, "}\n"); } /****************************************************************/ static gen_table * do_gen (insn_table *isa, decode_table *decode_rules) { gen_table *gen; if (decode_rules == NULL) error (NULL, "Must specify a decode table\n"); if (isa == NULL) error (NULL, "Must specify an instruction table\n"); if (decode_table_max_word_nr (decode_rules) > 0) options.gen.multi_word = decode_table_max_word_nr (decode_rules); gen = make_gen_tables (isa, decode_rules); gen_tables_expand_insns (gen); gen_tables_expand_semantics (gen); return gen; } /****************************************************************/ igen_options options; int main (int argc, char **argv, char **envp) { cache_entry *cache_rules = NULL; lf_file_references file_references = lf_include_references; decode_table *decode_rules = NULL; insn_table *isa = NULL; gen_table *gen = NULL; char *real_file_name = NULL; int is_header = 0; int ch; lf *standard_out = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "igen"); INIT_OPTIONS (); if (argc == 1) { printf ("Usage:\n"); printf ("\n"); printf (" igen <config-opts> ... <input-opts>... <output-opts>...\n"); printf ("\n"); printf ("Config options:\n"); printf ("\n"); printf (" -B <bit-size>\n"); printf ("\t Set the number of bits in an instruction (deprecated).\n"); printf ("\t This option can now be set directly in the instruction table.\n"); printf ("\n"); printf (" -D <data-structure>\n"); printf ("\t Dump the specified data structure to stdout. Valid structures include:\n"); printf ("\t processor-names - list the names of all the processors (models)\n"); printf ("\n"); printf (" -F <filter-list>\n"); printf ("\t Filter out any instructions with a non-empty flags field that contains\n"); printf ("\t a flag not listed in the <filter-list>.\n"); printf ("\n"); printf (" -H <high-bit>\n"); printf ("\t Set the number of the high (most significant) instruction bit (deprecated).\n"); printf ("\t This option can now be set directly in the instruction table.\n"); printf ("\n"); printf (" -I <directory>\n"); printf ("\t Add <directory> to the list of directories searched when opening a file\n"); printf ("\n"); printf (" -M <model-list>\n"); printf ("\t Filter out any instructions that do not support at least one of the listed\n"); printf ("\t models (An instructions with no model information is considered to support\n"); printf ("\t all models.).\n"); printf ("\n"); printf (" -N <nr-cpus>\n"); printf ("\t Generate a simulator supporting <nr-cpus>\n"); printf ("\t Specify `-N 0' to disable generation of the SMP. Specifying `-N 1' will\n"); printf ("\t still generate an SMP enabled simulator but will only support one CPU.\n"); printf ("\n"); printf (" -T <mechanism>\n"); printf ("\t Override the decode mechanism specified by the decode rules\n"); printf ("\n"); printf (" -P <prefix>\n"); printf ("\t Prepend global names (except itable) with the string <prefix>.\n"); printf ("\t Specify -P <module>=<prefix> to set a specific <module>'s prefix.\n"); printf ("\n"); printf (" -S <suffix>\n"); printf ("\t Replace a global name (suffix) (except itable) with the string <suffix>.\n"); printf ("\t Specify -S <module>=<suffix> to change a specific <module>'s name (suffix).\n"); printf ("\n"); printf (" -Werror\n"); printf ("\t Make warnings errors\n"); printf (" -Wnodiscard\n"); printf ("\t Suppress warnings about discarded functions and instructions\n"); printf (" -Wnowidth\n"); printf ("\t Suppress warnings about instructions with invalid widths\n"); printf (" -Wnounimplemented\n"); printf ("\t Suppress warnings about unimplemented instructions\n"); printf ("\n"); printf (" -G [!]<gen-option>\n"); printf ("\t Any of the following options:\n"); printf ("\n"); printf ("\t decode-duplicate - Override the decode rules, forcing the duplication of\n"); printf ("\t semantic functions\n"); printf ("\t decode-combine - Combine any duplicated entries within a table\n"); printf ("\t decode-zero-reserved - Override the decode rules, forcing reserved bits to be\n"); printf ("\t treated as zero.\n"); printf ("\t decode-switch-is-goto - Overfide the padded-switch code type as a goto-switch\n"); printf ("\n"); printf ("\t gen-conditional-issue - conditionally issue each instruction\n"); printf ("\t gen-delayed-branch - need both cia and nia passed around\n"); printf ("\t gen-direct-access - use #defines to directly access values\n"); printf ("\t gen-zero-r<N> - arch assumes GPR(<N>) == 0, keep it that way\n"); printf ("\t gen-icache[=<N> - generate an instruction cracking cache of size <N>\n"); printf ("\t Default size is %d\n", options.gen.icache_size); printf ("\t gen-insn-in-icache - save original instruction when cracking\n"); printf ("\t gen-multi-sim[=MODEL] - generate multiple simulators - one per model\n"); printf ("\t If specified MODEL is made the default architecture.\n"); printf ("\t By default, a single simulator that will\n"); printf ("\t execute any instruction is generated\n"); printf ("\t gen-multi-word - generate code allowing for multi-word insns\n"); printf ("\t gen-semantic-icache - include semantic code in cracking functions\n"); printf ("\t gen-slot-verification - perform slot verification as part of decode\n"); printf ("\t gen-nia-invalid - NIA defaults to nia_invalid\n"); printf ("\t gen-nia-void - do not compute/return NIA\n"); printf ("\n"); printf ("\t trace-combine - report combined entries a rule application\n"); printf ("\t trace-entries - report entries after a rules application\n"); printf ("\t trace-rule-rejection - report each rule as rejected\n"); printf ("\t trace-rule-selection - report each rule as selected\n"); printf ("\t trace-insn-insertion - report each instruction as it is inserted into a decode table\n"); printf ("\t trace-rule-expansion - report each instruction as it is expanded (before insertion into a decode table)\n"); printf ("\t trace-all - enable all trace options\n"); printf ("\n"); printf ("\t field-widths - instruction formats specify widths (deprecated)\n"); printf ("\t By default, an instruction format specifies bit\n"); printf ("\t positions\n"); printf ("\t This option can now be set directly in the\n"); printf ("\t instruction table\n"); printf ("\t jumps - use jumps instead of function calls\n"); printf ("\t omit-line-numbers - do not include line number information in the output\n"); printf ("\n"); printf ("Input options:\n"); printf ("\n"); printf (" -k <cache-rules> (deprecated)\n"); printf (" -o <decode-rules>\n"); printf (" -i <instruction-table>\n"); printf ("\n"); printf ("Output options:\n"); printf ("\n"); printf (" -x Perform expansion (required)\n"); printf (" -n <real-name> Specify the real name of the next output file\n"); printf (" -h Generate the header (.h) file rather than the body (.c)\n"); printf (" -c <output-file> output icache\n"); printf (" -d <output-file> output idecode\n"); printf (" -e <output-file> output engine\n"); printf (" -f <output-file> output support functions\n"); printf (" -m <output-file> output model\n"); printf (" -r <output-file> output multi-sim run\n"); printf (" -s <output-file> output schematic\n"); printf (" -t <output-file> output itable\n"); } while ((ch = getopt (argc, argv, "B:D:F:G:H:I:M:N:P:T:W:o:k:i:n:hc:d:e:m:r:s:t:f:x")) != -1) { fprintf (stderr, " -%c ", ch); if (optarg) fprintf (stderr, "%s ", optarg); fprintf (stderr, "\\\n"); switch (ch) { case 'M': filter_parse (&options.model_filter, optarg); break; case 'D': if (strcmp (optarg, "processor-names")) { char *processor; for (processor = filter_next (options.model_filter, ""); processor != NULL; processor = filter_next (options.model_filter, processor)) lf_printf (standard_out, "%s\n", processor); } else error (NULL, "Unknown data structure %s, not dumped\n", optarg); break; case 'F': filter_parse (&options.flags_filter, optarg); break; case 'I': { table_include **dir = &options.include; while ((*dir) != NULL) dir = &(*dir)->next; (*dir) = ZALLOC (table_include); (*dir)->dir = strdup (optarg); } break; case 'B': options.insn_bit_size = a2i (optarg); if (options.insn_bit_size <= 0 || options.insn_bit_size > max_insn_bit_size) { error (NULL, "Instruction bitsize must be in range 1..%d\n", max_insn_bit_size); } if (options.hi_bit_nr != options.insn_bit_size - 1 && options.hi_bit_nr != 0) { error (NULL, "Conflict betweem hi-bit-nr and insn-bit-size\n"); } break; case 'H': options.hi_bit_nr = a2i (optarg); if (options.hi_bit_nr != options.insn_bit_size - 1 && options.hi_bit_nr != 0) { error (NULL, "Conflict between hi-bit-nr and insn-bit-size\n"); } break; case 'N': options.gen.smp = a2i (optarg); break; case 'P': case 'S': { igen_module *names; igen_name *name; char *chp; chp = strchr (optarg, '='); if (chp == NULL) { names = &options.module.global; chp = optarg; } else { chp = chp + 1; /* skip `=' */ names = NULL; if (strncmp (optarg, "global=", chp - optarg) == 0) { names = &options.module.global; } if (strncmp (optarg, "engine=", chp - optarg) == 0) { names = &options.module.engine; } if (strncmp (optarg, "icache=", chp - optarg) == 0) { names = &options.module.icache; } if (strncmp (optarg, "idecode=", chp - optarg) == 0) { names = &options.module.idecode; } if (strncmp (optarg, "itable=", chp - optarg) == 0) { names = &options.module.itable; } if (strncmp (optarg, "semantics=", chp - optarg) == 0) { names = &options.module.semantics; } if (strncmp (optarg, "support=", chp - optarg) == 0) { names = &options.module.support; } if (names == NULL) { error (NULL, "Prefix `%s' unreconized\n", optarg); } } switch (ch) { case 'P': name = &names->prefix; break; case 'S': name = &names->suffix; break; default: abort (); /* Bad switch. */ } name->u = strdup (chp); name->l = strdup (chp); chp = name->u; while (*chp) { if (islower (*chp)) *chp = toupper (*chp); chp++; } if (name == &options.module.global.prefix) { options.module.engine.prefix = options.module.global.prefix; options.module.icache.prefix = options.module.global.prefix; options.module.idecode.prefix = options.module.global.prefix; /* options.module.itable.prefix = options.module.global.prefix; */ options.module.semantics.prefix = options.module.global.prefix; options.module.support.prefix = options.module.global.prefix; } if (name == &options.module.global.suffix) { options.module.engine.suffix = options.module.global.suffix; options.module.icache.suffix = options.module.global.suffix; options.module.idecode.suffix = options.module.global.suffix; /* options.module.itable.suffix = options.module.global.suffix; */ options.module.semantics.suffix = options.module.global.suffix; options.module.support.suffix = options.module.global.suffix; } break; } case 'W': { if (strcmp (optarg, "error") == 0) options.warning = error; else if (strcmp (optarg, "nodiscard") == 0) options.warn.discard = 0; else if (strcmp (optarg, "discard") == 0) options.warn.discard = 1; else if (strcmp (optarg, "nowidth") == 0) options.warn.width = 0; else if (strcmp (optarg, "width") == 0) options.warn.width = 1; else if (strcmp (optarg, "nounimplemented") == 0) options.warn.unimplemented = 0; else if (strcmp (optarg, "unimplemented") == 0) options.warn.unimplemented = 1; else error (NULL, "Unknown -W argument `%s'\n", optarg); 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 (strcmp (argp, "decode-duplicate") == 0) { options.decode.duplicate = enable_p; } else if (strcmp (argp, "decode-combine") == 0) { options.decode.combine = enable_p; } else if (strcmp (argp, "decode-zero-reserved") == 0) { options.decode.zero_reserved = enable_p; } else if (strcmp (argp, "gen-conditional-issue") == 0) { options.gen.conditional_issue = enable_p; } else if (strcmp (argp, "conditional-issue") == 0) { options.gen.conditional_issue = enable_p; options.warning (NULL, "Option conditional-issue replaced by gen-conditional-issue\n"); } else if (strcmp (argp, "gen-delayed-branch") == 0) { options.gen.delayed_branch = enable_p; } else if (strcmp (argp, "delayed-branch") == 0) { options.gen.delayed_branch = enable_p; options.warning (NULL, "Option delayed-branch replaced by gen-delayed-branch\n"); } else if (strcmp (argp, "gen-direct-access") == 0) { options.gen.direct_access = enable_p; } else if (strcmp (argp, "direct-access") == 0) { options.gen.direct_access = enable_p; options.warning (NULL, "Option direct-access replaced by gen-direct-access\n"); } else if (strncmp (argp, "gen-zero-r", strlen ("gen-zero-r")) == 0) { options.gen.zero_reg = enable_p; options.gen.zero_reg_nr = atoi (argp + strlen ("gen-zero-r")); } else if (strncmp (argp, "zero-r", strlen ("zero-r")) == 0) { options.gen.zero_reg = enable_p; options.gen.zero_reg_nr = atoi (argp + strlen ("zero-r")); options.warning (NULL, "Option zero-r<N> replaced by gen-zero-r<N>\n"); } else if (strncmp (argp, "gen-icache", strlen ("gen-icache")) == 0) { switch (argp[strlen ("gen-icache")]) { case '=': options.gen.icache_size = atoi (argp + strlen ("gen-icache") + 1); options.gen.icache = enable_p; break; case '\0': options.gen.icache = enable_p; break; default: error (NULL, "Expecting -Ggen-icache or -Ggen-icache=<N>\n"); } } else if (strcmp (argp, "gen-insn-in-icache") == 0) { options.gen.insn_in_icache = enable_p; } else if (strncmp (argp, "gen-multi-sim", strlen ("gen-multi-sim")) == 0) { char *arg = &argp[strlen ("gen-multi-sim")]; switch (arg[0]) { case '=': options.gen.multi_sim = enable_p; options.gen.default_model = arg + 1; if (!filter_is_member (options.model_filter, options.gen.default_model)) error (NULL, "multi-sim model %s unknown\n", options.gen.default_model); break; case '\0': options.gen.multi_sim = enable_p; options.gen.default_model = NULL; break; default: error (NULL, "Expecting -Ggen-multi-sim or -Ggen-multi-sim=<MODEL>\n"); break; } } else if (strcmp (argp, "gen-multi-word") == 0) { options.gen.multi_word = enable_p; } else if (strcmp (argp, "gen-semantic-icache") == 0) { options.gen.semantic_icache = enable_p; } else if (strcmp (argp, "gen-slot-verification") == 0) { options.gen.slot_verification = enable_p; } else if (strcmp (argp, "verify-slot") == 0) { options.gen.slot_verification = enable_p; options.warning (NULL, "Option verify-slot replaced by gen-slot-verification\n"); } else if (strcmp (argp, "gen-nia-invalid") == 0) { options.gen.nia = nia_is_invalid; } else if (strcmp (argp, "default-nia-minus-one") == 0) { options.gen.nia = nia_is_invalid; options.warning (NULL, "Option default-nia-minus-one replaced by gen-nia-invalid\n"); } else if (strcmp (argp, "gen-nia-void") == 0) { options.gen.nia = nia_is_void; } else if (strcmp (argp, "trace-all") == 0) { memset (&options.trace, enable_p, sizeof (options.trace)); } else if (strcmp (argp, "trace-combine") == 0) { options.trace.combine = enable_p; } else if (strcmp (argp, "trace-entries") == 0) { options.trace.entries = enable_p; } else if (strcmp (argp, "trace-rule-rejection") == 0) { options.trace.rule_rejection = enable_p; } else if (strcmp (argp, "trace-rule-selection") == 0) { options.trace.rule_selection = enable_p; } else if (strcmp (argp, "trace-insn-insertion") == 0) { options.trace.insn_insertion = enable_p; } else if (strcmp (argp, "trace-insn-expansion") == 0) { options.trace.insn_expansion = enable_p; } else if (strcmp (argp, "jumps") == 0) { options.gen.code = generate_jumps; } else if (strcmp (argp, "field-widths") == 0) { options.insn_specifying_widths = enable_p; } else if (strcmp (argp, "omit-line-numbers") == 0) { file_references = lf_omit_references; } else { error (NULL, "Unknown option %s\n", optarg); } break; } case 'i': isa = load_insn_table (optarg, cache_rules); if (isa->illegal_insn == NULL) error (NULL, "illegal-instruction missing from insn table\n"); break; case 'x': gen = do_gen (isa, decode_rules); break; case 'o': decode_rules = load_decode_table (optarg); break; case 'k': if (isa != NULL) error (NULL, "Cache file must appear before the insn file\n"); cache_rules = load_cache_table (optarg); break; case 'n': real_file_name = strdup (optarg); break; case 'h': is_header = 1; break; case 'c': case 'd': case 'e': case 'f': case 'm': case 'r': case 's': case 't': { lf *file = lf_open (optarg, real_file_name, file_references, (is_header ? lf_is_h : lf_is_c), argv[0]); if (gen == NULL && ch != 't' && ch != 'm' && ch != 'f') { options.warning (NULL, "Explicitly generate tables with -x option\n"); gen = do_gen (isa, decode_rules); } lf_print__file_start (file); switch (ch) { case 'm': if (is_header) gen_model_h (file, isa); else gen_model_c (file, isa); break; case 't': if (is_header) gen_itable_h (file, isa); else gen_itable_c (file, isa); break; case 'f': if (is_header) gen_support_h (file, isa); else gen_support_c (file, isa); break; case 'r': if (is_header) options.warning (NULL, "-hr option ignored\n"); else gen_run_c (file, gen); break; case 's': if (is_header) gen_semantics_h (file, gen->semantics, isa->max_nr_words); else gen_semantics_c (file, gen->semantics, isa->caches); break; case 'd': if (is_header) gen_idecode_h (file, gen, isa, cache_rules); else gen_idecode_c (file, gen, isa, cache_rules); break; case 'e': if (is_header) gen_engine_h (file, gen, isa, cache_rules); else gen_engine_c (file, gen, isa, cache_rules); break; case 'c': if (is_header) gen_icache_h (file, gen->semantics, isa->functions, isa->max_nr_words); else gen_icache_c (file, gen->semantics, isa->functions, cache_rules); break; } lf_print__file_finish (file); lf_close (file); is_header = 0; } real_file_name = NULL; break; default: ERROR ("Bad switch"); } } return (0); }
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