acpi_status acpi_ex_store(union acpi_operand_object *source_desc, union acpi_operand_object *dest_desc, struct acpi_walk_state *walk_state) { acpi_status status = AE_OK; union acpi_operand_object *ref_desc = dest_desc; ACPI_FUNCTION_TRACE_PTR(ex_store, dest_desc); /* Validate parameters */ if (!source_desc || !dest_desc) { ACPI_ERROR((AE_INFO, "Null parameter")); return_ACPI_STATUS(AE_AML_NO_OPERAND); } /* dest_desc can be either a namespace node or an ACPI object */ if (ACPI_GET_DESCRIPTOR_TYPE(dest_desc) == ACPI_DESC_TYPE_NAMED) { /* * Dest is a namespace node, * Storing an object into a Named node. */ status = acpi_ex_store_object_to_node(source_desc, (struct acpi_namespace_node *) dest_desc, walk_state, ACPI_IMPLICIT_CONVERSION); return_ACPI_STATUS(status); } /* Destination object must be a Reference or a Constant object */ switch (ACPI_GET_OBJECT_TYPE(dest_desc)) { case ACPI_TYPE_LOCAL_REFERENCE: break; case ACPI_TYPE_INTEGER: /* Allow stores to Constants -- a Noop as per ACPI spec */ if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) { return_ACPI_STATUS(AE_OK); } /*lint -fallthrough */ default: /* Destination is not a Reference object */ ACPI_ERROR((AE_INFO, "Target is not a Reference or Constant object - %s [%p]", acpi_ut_get_object_type_name(dest_desc), dest_desc)); ACPI_DUMP_STACK_ENTRY(source_desc); ACPI_DUMP_STACK_ENTRY(dest_desc); ACPI_DUMP_OPERANDS(&dest_desc, ACPI_IMODE_EXECUTE, "ExStore", 2, "Target is not a Reference or Constant object"); return_ACPI_STATUS(AE_AML_OPERAND_TYPE); } /* * Examine the Reference opcode. These cases are handled: * * 1) Store to Name (Change the object associated with a name) * 2) Store to an indexed area of a Buffer or Package * 3) Store to a Method Local or Arg * 4) Store to the debug object */ switch (ref_desc->reference.opcode) { case AML_NAME_OP: case AML_REF_OF_OP: /* Storing an object into a Name "container" */ status = acpi_ex_store_object_to_node(source_desc, ref_desc->reference. object, walk_state, ACPI_IMPLICIT_CONVERSION); break; case AML_INDEX_OP: /* Storing to an Index (pointer into a packager or buffer) */ status = acpi_ex_store_object_to_index(source_desc, ref_desc, walk_state); break; case AML_LOCAL_OP: case AML_ARG_OP: /* Store to a method local/arg */ status = acpi_ds_store_object_to_local(ref_desc->reference.opcode, ref_desc->reference.offset, source_desc, walk_state); break; case AML_DEBUG_OP: /* * Storing to the Debug object causes the value stored to be * displayed and otherwise has no effect -- see ACPI Specification */ ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "**** Write to Debug Object: Object %p %s ****:\n\n", source_desc, acpi_ut_get_object_type_name(source_desc))); acpi_ex_do_debug_object(source_desc, 0, 0); break; default: ACPI_ERROR((AE_INFO, "Unknown Reference opcode %X", ref_desc->reference.opcode)); ACPI_DUMP_ENTRY(ref_desc, ACPI_LV_ERROR); status = AE_AML_INTERNAL; break; } return_ACPI_STATUS(status); }
acpi_status acpi_ds_store_object_to_local(u16 opcode, u32 index, union acpi_operand_object *obj_desc, struct acpi_walk_state *walk_state) { acpi_status status; struct acpi_namespace_node *node; union acpi_operand_object *current_obj_desc; union acpi_operand_object *new_obj_desc; ACPI_FUNCTION_TRACE(ds_store_object_to_local); ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Opcode=%X Index=%d Obj=%p\n", opcode, index, obj_desc)); /* Parameter validation */ if (!obj_desc) { return_ACPI_STATUS(AE_BAD_PARAMETER); } /* Get the namespace node for the arg/local */ status = acpi_ds_method_data_get_node(opcode, index, walk_state, &node); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } current_obj_desc = acpi_ns_get_attached_object(node); if (current_obj_desc == obj_desc) { ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p already installed!\n", obj_desc)); return_ACPI_STATUS(status); } /* * If the reference count on the object is more than one, we must * take a copy of the object before we store. A reference count * of exactly 1 means that the object was just created during the * evaluation of an expression, and we can safely use it since it * is not used anywhere else. */ new_obj_desc = obj_desc; if (obj_desc->common.reference_count > 1) { status = acpi_ut_copy_iobject_to_iobject(obj_desc, &new_obj_desc, walk_state); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } } /* * If there is an object already in this slot, we either * have to delete it, or if this is an argument and there * is an object reference stored there, we have to do * an indirect store! */ if (current_obj_desc) { /* * Check for an indirect store if an argument * contains an object reference (stored as an Node). * We don't allow this automatic dereferencing for * locals, since a store to a local should overwrite * anything there, including an object reference. * * If both Arg0 and Local0 contain ref_of (Local4): * * Store (1, Arg0) - Causes indirect store to local4 * Store (1, Local0) - Stores 1 in local0, overwriting * the reference to local4 * Store (1, de_refof (Local0)) - Causes indirect store to local4 * * Weird, but true. */ if (opcode == AML_ARG_OP) { /* * If we have a valid reference object that came from ref_of(), * do the indirect store */ if ((ACPI_GET_DESCRIPTOR_TYPE(current_obj_desc) == ACPI_DESC_TYPE_OPERAND) && (current_obj_desc->common.type == ACPI_TYPE_LOCAL_REFERENCE) && (current_obj_desc->reference.opcode == AML_REF_OF_OP)) { ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Arg (%p) is an ObjRef(Node), storing in node %p\n", new_obj_desc, current_obj_desc)); /* * Store this object to the Node (perform the indirect store) * NOTE: No implicit conversion is performed, as per the ACPI * specification rules on storing to Locals/Args. */ status = acpi_ex_store_object_to_node(new_obj_desc, current_obj_desc-> reference. object, walk_state, ACPI_NO_IMPLICIT_CONVERSION); /* Remove local reference if we copied the object above */ if (new_obj_desc != obj_desc) { acpi_ut_remove_reference(new_obj_desc); } return_ACPI_STATUS(status); } } /* * Delete the existing object * before storing the new one */ acpi_ds_method_data_delete_value(opcode, index, walk_state); } /* * Install the Obj descriptor (*new_obj_desc) into * the descriptor for the Arg or Local. * (increments the object reference count by one) */ status = acpi_ds_method_data_set_value(opcode, index, new_obj_desc, walk_state); /* Remove local reference if we copied the object above */ if (new_obj_desc != obj_desc) { acpi_ut_remove_reference(new_obj_desc); } return_ACPI_STATUS(status); }
acpi_status acpi_ex_store ( union acpi_operand_object *source_desc, union acpi_operand_object *dest_desc, struct acpi_walk_state *walk_state) { acpi_status status = AE_OK; union acpi_operand_object *ref_desc = dest_desc; ACPI_FUNCTION_TRACE_PTR ("ex_store", dest_desc); /* Validate parameters */ if (!source_desc || !dest_desc) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null parameter\n")); return_ACPI_STATUS (AE_AML_NO_OPERAND); } /* dest_desc can be either a namespace node or an ACPI object */ if (ACPI_GET_DESCRIPTOR_TYPE (dest_desc) == ACPI_DESC_TYPE_NAMED) { /* * Dest is a namespace node, * Storing an object into a Named node. */ status = acpi_ex_store_object_to_node (source_desc, (struct acpi_namespace_node *) dest_desc, walk_state, ACPI_IMPLICIT_CONVERSION); return_ACPI_STATUS (status); } /* Destination object must be a Reference or a Constant object */ switch (ACPI_GET_OBJECT_TYPE (dest_desc)) { case ACPI_TYPE_LOCAL_REFERENCE: break; case ACPI_TYPE_INTEGER: /* Allow stores to Constants -- a Noop as per ACPI spec */ if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) { return_ACPI_STATUS (AE_OK); } /*lint -fallthrough */ default: /* Destination is not a Reference object */ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Target is not a Reference or Constant object - %s [%p]\n", acpi_ut_get_object_type_name (dest_desc), dest_desc)); ACPI_DUMP_STACK_ENTRY (source_desc); ACPI_DUMP_STACK_ENTRY (dest_desc); ACPI_DUMP_OPERANDS (&dest_desc, ACPI_IMODE_EXECUTE, "ex_store", 2, "Target is not a Reference or Constant object"); return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } /* * Examine the Reference opcode. These cases are handled: * * 1) Store to Name (Change the object associated with a name) * 2) Store to an indexed area of a Buffer or Package * 3) Store to a Method Local or Arg * 4) Store to the debug object */ switch (ref_desc->reference.opcode) { case AML_NAME_OP: case AML_REF_OF_OP: /* Storing an object into a Name "container" */ status = acpi_ex_store_object_to_node (source_desc, ref_desc->reference.object, walk_state, ACPI_IMPLICIT_CONVERSION); break; case AML_INDEX_OP: /* Storing to an Index (pointer into a packager or buffer) */ status = acpi_ex_store_object_to_index (source_desc, ref_desc, walk_state); break; case AML_LOCAL_OP: case AML_ARG_OP: /* Store to a method local/arg */ status = acpi_ds_store_object_to_local (ref_desc->reference.opcode, ref_desc->reference.offset, source_desc, walk_state); break; case AML_DEBUG_OP: /* * Storing to the Debug object causes the value stored to be * displayed and otherwise has no effect -- see ACPI Specification */ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "**** Write to Debug Object: Object %p %s ****:\n\n", source_desc, acpi_ut_get_object_type_name (source_desc))); ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %s: ", acpi_ut_get_object_type_name (source_desc))); if (!acpi_ut_valid_internal_object (source_desc)) { ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%p, Invalid Internal Object!\n", source_desc)); break; } switch (ACPI_GET_OBJECT_TYPE (source_desc)) { case ACPI_TYPE_INTEGER: if (acpi_gbl_integer_byte_width == 4) { ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n", (u32) source_desc->integer.value)); } else { ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X%8.8X\n", ACPI_FORMAT_UINT64 (source_desc->integer.value))); } break; case ACPI_TYPE_BUFFER: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]", (u32) source_desc->buffer.length)); ACPI_DUMP_BUFFER (source_desc->buffer.pointer, (source_desc->buffer.length < 32) ? source_desc->buffer.length : 32); break; case ACPI_TYPE_STRING: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n", source_desc->string.length, source_desc->string.pointer)); break; case ACPI_TYPE_PACKAGE: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] Elements Ptr - %p\n", source_desc->package.count, source_desc->package.elements)); break; default: ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%p\n", source_desc)); break; } ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, "\n")); break; default: ACPI_REPORT_ERROR (("ex_store: Unknown Reference opcode %X\n", ref_desc->reference.opcode)); ACPI_DUMP_ENTRY (ref_desc, ACPI_LV_ERROR); status = AE_AML_INTERNAL; break; } return_ACPI_STATUS (status); }