void
print_semantic_body(lf *file,
insn *instruction,
insn_bits *expanded_bits,
opcode_field *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);
/* generate the profiling call - this is delayed until after the
instruction has been verified */
lf_printf(file, "\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, ", processor, cia);\n");
lf_printf(file, "}\n");
/* generate the code (or at least something */
lf_printf(file, "\n");
lf_printf(file, "/* semantics: */\n");
lf_printf(file, "nia = cia + %d;\n", insn_bit_size / 8);
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_putstr(file, "error(\"%s:%d:0x%08lx:%s unimplemented\\n\",\n");
lf_printf(file, " itable[MY_INDEX].file, itable[MY_INDEX].line_nr, (long)cia, itable[MY_INDEX].name);\n");
lf_print__internal_reference(file);
}
}
static void
print_icache_function(lf *file,
insn *instruction,
insn_bits *expanded_bits,
opcode_field *opcodes,
cache_table *cache_rules)
{
int indent;
/* generate code to enter decoded instruction into the icache */
lf_printf(file, "\n");
lf_print_function_type(file, ICACHE_FUNCTION_TYPE, "EXTERN_ICACHE", "\n");
indent = print_function_name(file,
instruction->file_entry->fields[insn_name],
expanded_bits,
function_name_prefix_icache);
lf_indent(file, +indent);
lf_printf(file, "(%s)\n", ICACHE_FUNCTION_FORMAL);
lf_indent(file, -indent);
/* function header */
lf_printf(file, "{\n");
lf_indent(file, +2);
print_my_defines(file, expanded_bits, instruction->file_entry);
print_itrace(file, instruction->file_entry, 1/*putting-value-in-cache*/);
print_idecode_validate(file, instruction, opcodes);
lf_printf(file, "\n");
lf_printf(file, "{\n");
lf_indent(file, +2);
if ((code & generate_with_semantic_icache))
lf_printf(file, "unsigned_word nia;\n");
print_icache_body(file,
instruction,
expanded_bits,
cache_rules,
((code & generate_with_direct_access)
? define_variables
: declare_variables),
((code & generate_with_semantic_icache)
? both_values_and_icache
: put_values_in_icache));
lf_printf(file, "\n");
lf_printf(file, "cache_entry->address = cia;\n");
lf_printf(file, "cache_entry->semantic = ");
print_function_name(file,
instruction->file_entry->fields[insn_name],
expanded_bits,
function_name_prefix_semantics);
lf_printf(file, ";\n");
lf_printf(file, "\n");
if ((code & generate_with_semantic_icache)) {
lf_printf(file, "/* semantic routine */\n");
print_semantic_body(file,
instruction,
expanded_bits,
opcodes);
lf_printf(file, "return nia;\n");
}
if (!(code & generate_with_semantic_icache)) {
lf_printf(file, "/* return the function proper */\n");
lf_printf(file, "return ");
print_function_name(file,
instruction->file_entry->fields[insn_name],
expanded_bits,
function_name_prefix_semantics);
lf_printf(file, ";\n");
}
if ((code & generate_with_direct_access))
print_icache_body(file,
instruction,
expanded_bits,
cache_rules,
undef_variables,
((code & generate_with_semantic_icache)
? both_values_and_icache
: put_values_in_icache));
lf_indent(file, -2);
lf_printf(file, "}\n");
lf_indent(file, -2);
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_icache_function (lf *file,
insn_entry * instruction,
opcode_bits *expanded_bits,
insn_opcodes *opcodes,
cache_entry *cache_rules, int nr_prefetched_words)
{
int indent;
/* generate code to enter decoded instruction into the icache */
lf_printf (file, "\n");
lf_print__function_type_function (file, print_icache_function_type,
"EXTERN_ICACHE", "\n");
indent = print_function_name (file,
instruction->name,
instruction->format_name,
NULL,
expanded_bits, function_name_prefix_icache);
indent += lf_printf (file, " ");
lf_indent (file, +indent);
lf_printf (file, "(");
print_icache_function_formal (file, nr_prefetched_words);
lf_printf (file, ")\n");
lf_indent (file, -indent);
/* function header */
lf_printf (file, "{\n");
lf_indent (file, +2);
print_my_defines (file,
instruction->name,
instruction->format_name, expanded_bits);
print_itrace (file, instruction, 1 /*putting-value-in-cache */ );
print_idecode_validate (file, instruction, opcodes);
lf_printf (file, "\n");
lf_printf (file, "{\n");
lf_indent (file, +2);
if (options.gen.semantic_icache)
lf_printf (file, "unsigned_word nia;\n");
print_icache_body (file,
instruction,
expanded_bits,
cache_rules,
(options.gen.direct_access
? define_variables
: declare_variables),
(options.gen.semantic_icache
? both_values_and_icache
: put_values_in_icache), nr_prefetched_words);
lf_printf (file, "\n");
lf_printf (file, "cache_entry->address = cia;\n");
lf_printf (file, "cache_entry->semantic = ");
print_function_name (file,
instruction->name,
instruction->format_name,
NULL, expanded_bits, function_name_prefix_semantics);
lf_printf (file, ";\n");
lf_printf (file, "\n");
if (options.gen.semantic_icache)
{
lf_printf (file, "/* semantic routine */\n");
print_semantic_body (file, instruction, expanded_bits, opcodes);
lf_printf (file, "return nia;\n");
}
if (!options.gen.semantic_icache)
{
lf_printf (file, "/* return the function proper */\n");
lf_printf (file, "return ");
print_function_name (file,
instruction->name,
instruction->format_name,
NULL,
expanded_bits, function_name_prefix_semantics);
lf_printf (file, ";\n");
}
if (options.gen.direct_access)
{
print_icache_body (file,
instruction,
expanded_bits,
cache_rules,
undef_variables,
(options.gen.semantic_icache
? both_values_and_icache
: put_values_in_icache), nr_prefetched_words);
}
lf_indent (file, -2);
lf_printf (file, "}\n");
lf_indent (file, -2);
lf_printf (file, "}\n");
}
