acpi_ps_complete_final_op(struct acpi_walk_state *walk_state,
union acpi_parse_object *op, acpi_status status);
+static void
+acpi_ps_link_module_code(u8 *aml_start, u32 aml_length, acpi_owner_id owner_id);
+
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_aml_opcode
{
acpi_status status = AE_OK;
union acpi_parse_object *arg = NULL;
+ const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state);
INCREMENT_ARG_LIST(walk_state->arg_types);
}
- /* Special processing for certain opcodes */
-
- /* TBD (remove): Temporary mechanism to disable this code if needed */
-
-#ifdef ACPI_ENABLE_MODULE_LEVEL_CODE
-
- if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS1) &&
+ /*
+ * Handle executable code at "module-level". This refers to
+ * executable opcodes that appear outside of any control method.
+ */
+ if ((walk_state->pass_number <= ACPI_IMODE_LOAD_PASS2) &&
((walk_state->parse_flags & ACPI_PARSE_DISASSEMBLE) == 0)) {
/*
* We want to skip If/Else/While constructs during Pass1 because we
case AML_ELSE_OP:
case AML_WHILE_OP:
+ /*
+ * Currently supported module-level opcodes are:
+ * IF/ELSE/WHILE. These appear to be the most common,
+ * and easiest to support since they open an AML
+ * package.
+ */
+ if (walk_state->pass_number ==
+ ACPI_IMODE_LOAD_PASS1) {
+ acpi_ps_link_module_code(aml_op_start,
+ walk_state->
+ parser_state.
+ pkg_end -
+ aml_op_start,
+ walk_state->
+ owner_id);
+ }
+
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Pass1: Skipping an If/Else/While body\n"));
break;
default:
+ /*
+ * Check for an unsupported executable opcode at module
+ * level. We must be in PASS1, the parent must be a SCOPE,
+ * The opcode class must be EXECUTE, and the opcode must
+ * not be an argument to another opcode.
+ */
+ if ((walk_state->pass_number ==
+ ACPI_IMODE_LOAD_PASS1)
+ && (op->common.parent->common.aml_opcode ==
+ AML_SCOPE_OP)) {
+ op_info =
+ acpi_ps_get_opcode_info(op->common.
+ aml_opcode);
+ if ((op_info->class ==
+ AML_CLASS_EXECUTE) && (!arg)) {
+ ACPI_WARNING((AE_INFO,
+ "Detected an unsupported executable opcode "
+ "at module-level: [0x%.4X] at table offset 0x%.4X",
+ op->common.aml_opcode,
+ (u32)((aml_op_start - walk_state->parser_state.aml_start)
+ + sizeof(struct acpi_table_header))));
+ }
+ }
break;
}
}
-#endif
+
+ /* Special processing for certain opcodes */
switch (op->common.aml_opcode) {
case AML_METHOD_OP:
return_ACPI_STATUS(AE_OK);
}
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ps_link_module_code
+ *
+ * PARAMETERS: aml_start - Pointer to the AML
+ * aml_length - Length of executable AML
+ * owner_id - owner_id of module level code
+ *
+ * RETURN: None.
+ *
+ * DESCRIPTION: Wrap the module-level code with a method object and link the
+ * object to the global list. Note, the mutex field of the method
+ * object is used to link multiple module-level code objects.
+ *
+ ******************************************************************************/
+
+static void
+acpi_ps_link_module_code(u8 *aml_start, u32 aml_length, acpi_owner_id owner_id)
+{
+ union acpi_operand_object *prev;
+ union acpi_operand_object *next;
+ union acpi_operand_object *method_obj;
+
+ /* Get the tail of the list */
+
+ prev = next = acpi_gbl_module_code_list;
+ while (next) {
+ prev = next;
+ next = next->method.mutex;
+ }
+
+ /*
+ * Insert the module level code into the list. Merge it if it is
+ * adjacent to the previous element.
+ */
+ if (!prev ||
+ ((prev->method.aml_start + prev->method.aml_length) != aml_start)) {
+
+ /* Create, initialize, and link a new temporary method object */
+
+ method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
+ if (!method_obj) {
+ return;
+ }
+
+ method_obj->method.aml_start = aml_start;
+ method_obj->method.aml_length = aml_length;
+ method_obj->method.owner_id = owner_id;
+ method_obj->method.flags |= AOPOBJ_MODULE_LEVEL;
+
+ if (!prev) {
+ acpi_gbl_module_code_list = method_obj;
+ } else {
+ prev->method.mutex = method_obj;
+ }
+ } else {
+ prev->method.aml_length += aml_length;
+ }
+}
+
/*******************************************************************************
*
* FUNCTION: acpi_ps_complete_op
projects / firefly-linux-kernel-4.4.55.git / blobdiff