OBJECT_TYPE_INTERNAL acpi_ds_method_data_get_type ( u32 type, u32 index, ACPI_WALK_STATE *walk_state) { ACPI_STATUS status; ACPI_OPERAND_OBJECT **entry; ACPI_OPERAND_OBJECT *object; /* Get a pointer to the requested stack entry */ status = acpi_ds_method_data_get_entry (type, index, walk_state, &entry); if (ACPI_FAILURE (status)) { return ((ACPI_TYPE_NOT_FOUND)); } /* Get the object from the method stack */ object = *entry; /* Get the object type */ if (!object) { /* Any == 0 => "uninitialized" -- see spec 15.2.3.5.2.28 */ return (ACPI_TYPE_ANY); } return (object->common.type); }
ACPI_STATUS acpi_ds_method_data_set_entry ( u32 type, u32 index, ACPI_OPERAND_OBJECT *object, ACPI_WALK_STATE *walk_state) { ACPI_STATUS status; ACPI_OPERAND_OBJECT **entry; /* Get a pointer to the stack entry to set */ status = acpi_ds_method_data_get_entry (type, index, walk_state, &entry); if (ACPI_FAILURE (status)) { return (status); } /* Increment ref count so object can't be deleted while installed */ acpi_cm_add_reference (object); /* Install the object into the stack entry */ *entry = object; return (AE_OK); }
acpi_object_type8 acpi_ds_method_data_get_type ( u16 opcode, u32 index, acpi_walk_state *walk_state) { acpi_status status; acpi_operand_object **entry; acpi_operand_object *object; FUNCTION_TRACE ("Ds_method_data_get_type"); /* Get a pointer to the requested stack entry */ status = acpi_ds_method_data_get_entry (opcode, index, walk_state, &entry); if (ACPI_FAILURE (status)) { return_VALUE ((ACPI_TYPE_NOT_FOUND)); } /* Get the object from the method stack */ object = *entry; /* Get the object type */ if (!object) { /* Any == 0 => "uninitialized" -- see spec 15.2.3.5.2.28 */ return_VALUE (ACPI_TYPE_ANY); } return_VALUE (object->common.type); }
acpi_status acpi_ds_method_data_set_entry ( u16 opcode, u32 index, acpi_operand_object *object, acpi_walk_state *walk_state) { acpi_status status; acpi_operand_object **entry; FUNCTION_TRACE ("Ds_method_data_set_entry"); /* Get a pointer to the stack entry to set */ status = acpi_ds_method_data_get_entry (opcode, index, walk_state, &entry); if (ACPI_FAILURE (status)) { return_ACPI_STATUS (status); } /* Increment ref count so object can't be deleted while installed */ acpi_ut_add_reference (object); /* Install the object into the stack entry */ *entry = object; return_ACPI_STATUS (AE_OK); }
ACPI_STATUS acpi_ds_method_data_delete_value ( u32 type, u32 index, ACPI_WALK_STATE *walk_state) { ACPI_STATUS status; ACPI_OPERAND_OBJECT **entry; ACPI_OPERAND_OBJECT *object; /* Get a pointer to the requested entry */ status = acpi_ds_method_data_get_entry (type, index, walk_state, &entry); if (ACPI_FAILURE (status)) { return (status); } /* Get the current entry in this slot k */ object = *entry; /* * Undefine the Arg or Local by setting its descriptor * pointer to NULL. Locals/Args can contain both * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs */ *entry = NULL; if ((object) && (VALID_DESCRIPTOR_TYPE (object, ACPI_DESC_TYPE_INTERNAL))) { /* * There is a valid object in this slot * Decrement the reference count by one to balance the * increment when the object was stored in the slot. */ acpi_cm_remove_reference (object); } return (AE_OK); }
ACPI_STATUS acpi_ds_method_data_set_value ( u32 type, u32 index, ACPI_OPERAND_OBJECT *src_desc, ACPI_WALK_STATE *walk_state) { ACPI_STATUS status; ACPI_OPERAND_OBJECT **entry; /* Parameter validation */ if (!src_desc) { return (AE_BAD_PARAMETER); } /* Get a pointer to the requested method stack entry */ status = acpi_ds_method_data_get_entry (type, index, walk_state, &entry); if (ACPI_FAILURE (status)) { goto cleanup; } if (*entry == src_desc) { goto cleanup; } /* * 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 (*entry) { /* * 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 ((type == MTH_TYPE_ARG) && (VALID_DESCRIPTOR_TYPE (*entry, ACPI_DESC_TYPE_NAMED))) { /* Detach an existing object from the Node */ acpi_ns_detach_object ((ACPI_NAMESPACE_NODE *) *entry); /* * Store this object into the Node * (do the indirect store) */ status = acpi_ns_attach_object ((ACPI_NAMESPACE_NODE *) *entry, src_desc, src_desc->common.type); return (status); } /* * Otherwise, just delete the existing object * before storing the new one */ acpi_ds_method_data_delete_value (type, index, walk_state); } /* * Install the Obj_stack descriptor (*Src_desc) into * the descriptor for the Arg or Local. * Install the new object in the stack entry * (increments the object reference count by one) */ status = acpi_ds_method_data_set_entry (type, index, src_desc, walk_state); if (ACPI_FAILURE (status)) { goto cleanup; } /* Normal exit */ return (AE_OK); /* Error exit */ cleanup: return (status); }
ACPI_STATUS acpi_ds_method_data_get_value ( u32 type, u32 index, ACPI_WALK_STATE *walk_state, ACPI_OPERAND_OBJECT **dest_desc) { ACPI_STATUS status; ACPI_OPERAND_OBJECT **entry; ACPI_OPERAND_OBJECT *object; /* Validate the object descriptor */ if (!dest_desc) { return (AE_BAD_PARAMETER); } /* Get a pointer to the requested method stack entry */ status = acpi_ds_method_data_get_entry (type, index, walk_state, &entry); if (ACPI_FAILURE (status)) { return (status); } /* Get the object from the method stack */ object = *entry; /* Examine the returned object, it must be valid. */ if (!object) { /* * Index points to uninitialized object stack value. * This means that either 1) The expected argument was * not passed to the method, or 2) A local variable * was referenced by the method (via the ASL) * before it was initialized. Either case is an error. */ switch (type) { case MTH_TYPE_ARG: return (AE_AML_UNINITIALIZED_ARG); break; case MTH_TYPE_LOCAL: return (AE_AML_UNINITIALIZED_LOCAL); break; } } /* * Index points to initialized and valid object stack value. * Return an additional reference to the object */ *dest_desc = object; acpi_cm_add_reference (object); return (AE_OK); }
acpi_status acpi_ds_store_object_to_local ( u16 opcode, u32 index, acpi_operand_object *src_desc, acpi_walk_state *walk_state) { acpi_status status; acpi_operand_object **entry; FUNCTION_TRACE ("Ds_method_data_set_value"); ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Opcode=%d Idx=%d Obj=%p\n", opcode, index, src_desc)); /* Parameter validation */ if (!src_desc) { return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Get a pointer to the requested method stack entry */ status = acpi_ds_method_data_get_entry (opcode, index, walk_state, &entry); if (ACPI_FAILURE (status)) { goto cleanup; } if (*entry == src_desc) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Obj=%p already installed!\n", src_desc)); goto cleanup; } /* * 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 (*entry) { /* * 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) && (VALID_DESCRIPTOR_TYPE (*entry, ACPI_DESC_TYPE_NAMED))) { ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Arg (%p) is an Obj_ref(Node), storing in %p\n", src_desc, *entry)); /* Detach an existing object from the Node */ acpi_ns_detach_object ((acpi_namespace_node *) *entry); /* * Store this object into the Node * (do the indirect store) */ status = acpi_ns_attach_object ((acpi_namespace_node *) *entry, src_desc, src_desc->common.type); return_ACPI_STATUS (status); } #ifdef ACPI_ENABLE_IMPLICIT_CONVERSION /* * Perform "Implicit conversion" of the new object to the type of the * existing object */ status = acpi_ex_convert_to_target_type ((*entry)->common.type, &src_desc, walk_state); if (ACPI_FAILURE (status)) { goto cleanup; } #endif /* * Delete the existing object * before storing the new one */ acpi_ds_method_data_delete_value (opcode, index, walk_state); } /* * Install the Obj_stack descriptor (*Src_desc) into * the descriptor for the Arg or Local. * Install the new object in the stack entry * (increments the object reference count by one) */ status = acpi_ds_method_data_set_entry (opcode, index, src_desc, walk_state); if (ACPI_FAILURE (status)) { goto cleanup; } /* Normal exit */ return_ACPI_STATUS (AE_OK); /* Error exit */ cleanup: return_ACPI_STATUS (status); }
acpi_status acpi_ds_method_data_get_value ( u16 opcode, u32 index, acpi_walk_state *walk_state, acpi_operand_object **dest_desc) { acpi_status status; acpi_operand_object **entry; acpi_operand_object *object; FUNCTION_TRACE ("Ds_method_data_get_value"); /* Validate the object descriptor */ if (!dest_desc) { ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null object descriptor pointer\n")); return_ACPI_STATUS (AE_BAD_PARAMETER); } /* Get a pointer to the requested method stack entry */ status = acpi_ds_method_data_get_entry (opcode, index, walk_state, &entry); if (ACPI_FAILURE (status)) { return_ACPI_STATUS (status); } /* Get the object from the method stack */ object = *entry; /* Examine the returned object, it must be valid. */ if (!object) { /* * Index points to uninitialized object stack value. * This means that either 1) The expected argument was * not passed to the method, or 2) A local variable * was referenced by the method (via the ASL) * before it was initialized. Either case is an error. */ switch (opcode) { case AML_ARG_OP: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Arg[%d] at entry %p\n", index, entry)); return_ACPI_STATUS (AE_AML_UNINITIALIZED_ARG); break; case AML_LOCAL_OP: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Uninitialized Local[%d] at entry %p\n", index, entry)); return_ACPI_STATUS (AE_AML_UNINITIALIZED_LOCAL); break; } } /* * Index points to initialized and valid object stack value. * Return an additional reference to the object */ *dest_desc = object; acpi_ut_add_reference (object); return_ACPI_STATUS (AE_OK); }