| /****************************************************************************** |
| * |
| * Module Name: utcopy - Internal to external object translation utilities |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2007, R. Byron Moore |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| * substantially similar to the "NO WARRANTY" disclaimer below |
| * ("Disclaimer") and any redistribution must be conditioned upon |
| * including a substantially similar Disclaimer requirement for further |
| * binary redistribution. |
| * 3. Neither the names of the above-listed copyright holders nor the names |
| * of any contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| * |
| * NO WARRANTY |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGES. |
| */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/amlcode.h> |
| #include <acpi/acnamesp.h> |
| |
| |
| #define _COMPONENT ACPI_UTILITIES |
| ACPI_MODULE_NAME("utcopy") |
| |
| /* Local prototypes */ |
| static acpi_status |
| acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object, |
| union acpi_object *external_object, |
| u8 * data_space, acpi_size * buffer_space_used); |
| |
| static acpi_status |
| acpi_ut_copy_ielement_to_ielement(u8 object_type, |
| union acpi_operand_object *source_object, |
| union acpi_generic_state *state, |
| void *context); |
| |
| static acpi_status |
| acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object, |
| u8 * buffer, acpi_size * space_used); |
| |
| static acpi_status |
| acpi_ut_copy_esimple_to_isimple(union acpi_object *user_obj, |
| union acpi_operand_object **return_obj); |
| |
| static acpi_status |
| acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object, |
| union acpi_operand_object **internal_object); |
| |
| static acpi_status |
| acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, |
| union acpi_operand_object *dest_desc); |
| |
| static acpi_status |
| acpi_ut_copy_ielement_to_eelement(u8 object_type, |
| union acpi_operand_object *source_object, |
| union acpi_generic_state *state, |
| void *context); |
| |
| static acpi_status |
| acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj, |
| union acpi_operand_object *dest_obj, |
| struct acpi_walk_state *walk_state); |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_isimple_to_esimple |
| * |
| * PARAMETERS: internal_object - Source object to be copied |
| * external_object - Where to return the copied object |
| * data_space - Where object data is returned (such as |
| * buffer and string data) |
| * buffer_space_used - Length of data_space that was used |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to copy a simple internal object to |
| * an external object. |
| * |
| * The data_space buffer is assumed to have sufficient space for |
| * the object. |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_isimple_to_esimple(union acpi_operand_object *internal_object, |
| union acpi_object *external_object, |
| u8 * data_space, acpi_size * buffer_space_used) |
| { |
| acpi_status status = AE_OK; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_isimple_to_esimple); |
| |
| *buffer_space_used = 0; |
| |
| /* |
| * Check for NULL object case (could be an uninitialized |
| * package element) |
| */ |
| if (!internal_object) { |
| return_ACPI_STATUS(AE_OK); |
| } |
| |
| /* Always clear the external object */ |
| |
| ACPI_MEMSET(external_object, 0, sizeof(union acpi_object)); |
| |
| /* |
| * In general, the external object will be the same type as |
| * the internal object |
| */ |
| external_object->type = ACPI_GET_OBJECT_TYPE(internal_object); |
| |
| /* However, only a limited number of external types are supported */ |
| |
| switch (ACPI_GET_OBJECT_TYPE(internal_object)) { |
| case ACPI_TYPE_STRING: |
| |
| external_object->string.pointer = (char *)data_space; |
| external_object->string.length = internal_object->string.length; |
| *buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size) |
| internal_object-> |
| string. |
| length + 1); |
| |
| ACPI_MEMCPY((void *)data_space, |
| (void *)internal_object->string.pointer, |
| (acpi_size) internal_object->string.length + 1); |
| break; |
| |
| case ACPI_TYPE_BUFFER: |
| |
| external_object->buffer.pointer = data_space; |
| external_object->buffer.length = internal_object->buffer.length; |
| *buffer_space_used = |
| ACPI_ROUND_UP_TO_NATIVE_WORD(internal_object->string. |
| length); |
| |
| ACPI_MEMCPY((void *)data_space, |
| (void *)internal_object->buffer.pointer, |
| internal_object->buffer.length); |
| break; |
| |
| case ACPI_TYPE_INTEGER: |
| |
| external_object->integer.value = internal_object->integer.value; |
| break; |
| |
| case ACPI_TYPE_LOCAL_REFERENCE: |
| |
| /* This is an object reference. */ |
| |
| switch (internal_object->reference.opcode) { |
| case AML_INT_NAMEPATH_OP: |
| |
| /* For namepath, return the object handle ("reference") */ |
| |
| default: |
| |
| /* We are referring to the namespace node */ |
| |
| external_object->reference.handle = |
| internal_object->reference.node; |
| external_object->reference.actual_type = |
| acpi_ns_get_type(internal_object->reference.node); |
| break; |
| } |
| break; |
| |
| case ACPI_TYPE_PROCESSOR: |
| |
| external_object->processor.proc_id = |
| internal_object->processor.proc_id; |
| external_object->processor.pblk_address = |
| internal_object->processor.address; |
| external_object->processor.pblk_length = |
| internal_object->processor.length; |
| break; |
| |
| case ACPI_TYPE_POWER: |
| |
| external_object->power_resource.system_level = |
| internal_object->power_resource.system_level; |
| |
| external_object->power_resource.resource_order = |
| internal_object->power_resource.resource_order; |
| break; |
| |
| default: |
| /* |
| * There is no corresponding external object type |
| */ |
| ACPI_ERROR((AE_INFO, |
| "Unsupported object type, cannot convert to external object: %s", |
| acpi_ut_get_type_name(ACPI_GET_OBJECT_TYPE |
| (internal_object)))); |
| |
| return_ACPI_STATUS(AE_SUPPORT); |
| } |
| |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_ielement_to_eelement |
| * |
| * PARAMETERS: acpi_pkg_callback |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Copy one package element to another package element |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_ielement_to_eelement(u8 object_type, |
| union acpi_operand_object *source_object, |
| union acpi_generic_state *state, |
| void *context) |
| { |
| acpi_status status = AE_OK; |
| struct acpi_pkg_info *info = (struct acpi_pkg_info *)context; |
| acpi_size object_space; |
| u32 this_index; |
| union acpi_object *target_object; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| this_index = state->pkg.index; |
| target_object = (union acpi_object *) |
| &((union acpi_object *)(state->pkg.dest_object))->package. |
| elements[this_index]; |
| |
| switch (object_type) { |
| case ACPI_COPY_TYPE_SIMPLE: |
| |
| /* |
| * This is a simple or null object |
| */ |
| status = acpi_ut_copy_isimple_to_esimple(source_object, |
| target_object, |
| info->free_space, |
| &object_space); |
| if (ACPI_FAILURE(status)) { |
| return (status); |
| } |
| break; |
| |
| case ACPI_COPY_TYPE_PACKAGE: |
| |
| /* |
| * Build the package object |
| */ |
| target_object->type = ACPI_TYPE_PACKAGE; |
| target_object->package.count = source_object->package.count; |
| target_object->package.elements = |
| ACPI_CAST_PTR(union acpi_object, info->free_space); |
| |
| /* |
| * Pass the new package object back to the package walk routine |
| */ |
| state->pkg.this_target_obj = target_object; |
| |
| /* |
| * Save space for the array of objects (Package elements) |
| * update the buffer length counter |
| */ |
| object_space = ACPI_ROUND_UP_TO_NATIVE_WORD((acpi_size) |
| target_object-> |
| package.count * |
| sizeof(union |
| acpi_object)); |
| break; |
| |
| default: |
| return (AE_BAD_PARAMETER); |
| } |
| |
| info->free_space += object_space; |
| info->length += object_space; |
| return (status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_ipackage_to_epackage |
| * |
| * PARAMETERS: internal_object - Pointer to the object we are returning |
| * Buffer - Where the object is returned |
| * space_used - Where the object length is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to place a package object in a user |
| * buffer. A package object by definition contains other objects. |
| * |
| * The buffer is assumed to have sufficient space for the object. |
| * The caller must have verified the buffer length needed using the |
| * acpi_ut_get_object_size function before calling this function. |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_ipackage_to_epackage(union acpi_operand_object *internal_object, |
| u8 * buffer, acpi_size * space_used) |
| { |
| union acpi_object *external_object; |
| acpi_status status; |
| struct acpi_pkg_info info; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_ipackage_to_epackage); |
| |
| /* |
| * First package at head of the buffer |
| */ |
| external_object = ACPI_CAST_PTR(union acpi_object, buffer); |
| |
| /* |
| * Free space begins right after the first package |
| */ |
| info.length = ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
| info.free_space = |
| buffer + ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
| info.object_space = 0; |
| info.num_packages = 1; |
| |
| external_object->type = ACPI_GET_OBJECT_TYPE(internal_object); |
| external_object->package.count = internal_object->package.count; |
| external_object->package.elements = ACPI_CAST_PTR(union acpi_object, |
| info.free_space); |
| |
| /* |
| * Leave room for an array of ACPI_OBJECTS in the buffer |
| * and move the free space past it |
| */ |
| info.length += (acpi_size) external_object->package.count * |
| ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
| info.free_space += external_object->package.count * |
| ACPI_ROUND_UP_TO_NATIVE_WORD(sizeof(union acpi_object)); |
| |
| status = acpi_ut_walk_package_tree(internal_object, external_object, |
| acpi_ut_copy_ielement_to_eelement, |
| &info); |
| |
| *space_used = info.length; |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_iobject_to_eobject |
| * |
| * PARAMETERS: internal_object - The internal object to be converted |
| * buffer_ptr - Where the object is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function is called to build an API object to be returned to |
| * the caller. |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_ut_copy_iobject_to_eobject(union acpi_operand_object *internal_object, |
| struct acpi_buffer *ret_buffer) |
| { |
| acpi_status status; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_iobject_to_eobject); |
| |
| if (ACPI_GET_OBJECT_TYPE(internal_object) == ACPI_TYPE_PACKAGE) { |
| /* |
| * Package object: Copy all subobjects (including |
| * nested packages) |
| */ |
| status = acpi_ut_copy_ipackage_to_epackage(internal_object, |
| ret_buffer->pointer, |
| &ret_buffer->length); |
| } else { |
| /* |
| * Build a simple object (no nested objects) |
| */ |
| status = acpi_ut_copy_isimple_to_esimple(internal_object, |
| ACPI_CAST_PTR(union |
| acpi_object, |
| ret_buffer-> |
| pointer), |
| ACPI_ADD_PTR(u8, |
| ret_buffer-> |
| pointer, |
| ACPI_ROUND_UP_TO_NATIVE_WORD |
| (sizeof |
| (union |
| acpi_object))), |
| &ret_buffer->length); |
| /* |
| * build simple does not include the object size in the length |
| * so we add it in here |
| */ |
| ret_buffer->length += sizeof(union acpi_object); |
| } |
| |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_esimple_to_isimple |
| * |
| * PARAMETERS: external_object - The external object to be converted |
| * ret_internal_object - Where the internal object is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: This function copies an external object to an internal one. |
| * NOTE: Pointers can be copied, we don't need to copy data. |
| * (The pointers have to be valid in our address space no matter |
| * what we do with them!) |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_esimple_to_isimple(union acpi_object *external_object, |
| union acpi_operand_object **ret_internal_object) |
| { |
| union acpi_operand_object *internal_object; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_esimple_to_isimple); |
| |
| /* |
| * Simple types supported are: String, Buffer, Integer |
| */ |
| switch (external_object->type) { |
| case ACPI_TYPE_STRING: |
| case ACPI_TYPE_BUFFER: |
| case ACPI_TYPE_INTEGER: |
| case ACPI_TYPE_LOCAL_REFERENCE: |
| |
| internal_object = acpi_ut_create_internal_object((u8) |
| external_object-> |
| type); |
| if (!internal_object) { |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| break; |
| |
| case ACPI_TYPE_ANY: /* This is the case for a NULL object */ |
| |
| *ret_internal_object = NULL; |
| return_ACPI_STATUS(AE_OK); |
| |
| default: |
| /* All other types are not supported */ |
| |
| ACPI_ERROR((AE_INFO, |
| "Unsupported object type, cannot convert to internal object: %s", |
| acpi_ut_get_type_name(external_object->type))); |
| |
| return_ACPI_STATUS(AE_SUPPORT); |
| } |
| |
| /* Must COPY string and buffer contents */ |
| |
| switch (external_object->type) { |
| case ACPI_TYPE_STRING: |
| |
| internal_object->string.pointer = |
| ACPI_ALLOCATE_ZEROED((acpi_size) external_object->string. |
| length + 1); |
| if (!internal_object->string.pointer) { |
| goto error_exit; |
| } |
| |
| ACPI_MEMCPY(internal_object->string.pointer, |
| external_object->string.pointer, |
| external_object->string.length); |
| |
| internal_object->string.length = external_object->string.length; |
| break; |
| |
| case ACPI_TYPE_BUFFER: |
| |
| internal_object->buffer.pointer = |
| ACPI_ALLOCATE_ZEROED(external_object->buffer.length); |
| if (!internal_object->buffer.pointer) { |
| goto error_exit; |
| } |
| |
| ACPI_MEMCPY(internal_object->buffer.pointer, |
| external_object->buffer.pointer, |
| external_object->buffer.length); |
| |
| internal_object->buffer.length = external_object->buffer.length; |
| |
| /* Mark buffer data valid */ |
| |
| internal_object->buffer.flags |= AOPOBJ_DATA_VALID; |
| break; |
| |
| case ACPI_TYPE_INTEGER: |
| |
| internal_object->integer.value = external_object->integer.value; |
| break; |
| |
| case ACPI_TYPE_LOCAL_REFERENCE: |
| |
| /* TBD: should validate incoming handle */ |
| |
| internal_object->reference.opcode = AML_INT_NAMEPATH_OP; |
| internal_object->reference.node = |
| external_object->reference.handle; |
| break; |
| |
| default: |
| /* Other types can't get here */ |
| break; |
| } |
| |
| *ret_internal_object = internal_object; |
| return_ACPI_STATUS(AE_OK); |
| |
| error_exit: |
| acpi_ut_remove_reference(internal_object); |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_epackage_to_ipackage |
| * |
| * PARAMETERS: external_object - The external object to be converted |
| * internal_object - Where the internal object is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Copy an external package object to an internal package. |
| * Handles nested packages. |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_epackage_to_ipackage(union acpi_object *external_object, |
| union acpi_operand_object **internal_object) |
| { |
| acpi_status status = AE_OK; |
| union acpi_operand_object *package_object; |
| union acpi_operand_object **package_elements; |
| acpi_native_uint i; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_epackage_to_ipackage); |
| |
| /* Create the package object */ |
| |
| package_object = |
| acpi_ut_create_package_object(external_object->package.count); |
| if (!package_object) { |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| |
| package_elements = package_object->package.elements; |
| |
| /* |
| * Recursive implementation. Probably ok, since nested external packages |
| * as parameters should be very rare. |
| */ |
| for (i = 0; i < external_object->package.count; i++) { |
| status = |
| acpi_ut_copy_eobject_to_iobject(&external_object->package. |
| elements[i], |
| &package_elements[i]); |
| if (ACPI_FAILURE(status)) { |
| |
| /* Truncate package and delete it */ |
| |
| package_object->package.count = (u32) i; |
| package_elements[i] = NULL; |
| acpi_ut_remove_reference(package_object); |
| return_ACPI_STATUS(status); |
| } |
| } |
| |
| /* Mark package data valid */ |
| |
| package_object->package.flags |= AOPOBJ_DATA_VALID; |
| |
| *internal_object = package_object; |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_eobject_to_iobject |
| * |
| * PARAMETERS: external_object - The external object to be converted |
| * internal_object - Where the internal object is returned |
| * |
| * RETURN: Status - the status of the call |
| * |
| * DESCRIPTION: Converts an external object to an internal object. |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_ut_copy_eobject_to_iobject(union acpi_object *external_object, |
| union acpi_operand_object **internal_object) |
| { |
| acpi_status status; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_eobject_to_iobject); |
| |
| if (external_object->type == ACPI_TYPE_PACKAGE) { |
| status = |
| acpi_ut_copy_epackage_to_ipackage(external_object, |
| internal_object); |
| } else { |
| /* |
| * Build a simple object (no nested objects) |
| */ |
| status = |
| acpi_ut_copy_esimple_to_isimple(external_object, |
| internal_object); |
| } |
| |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_simple_object |
| * |
| * PARAMETERS: source_desc - The internal object to be copied |
| * dest_desc - New target object |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Simple copy of one internal object to another. Reference count |
| * of the destination object is preserved. |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, |
| union acpi_operand_object *dest_desc) |
| { |
| u16 reference_count; |
| union acpi_operand_object *next_object; |
| |
| /* Save fields from destination that we don't want to overwrite */ |
| |
| reference_count = dest_desc->common.reference_count; |
| next_object = dest_desc->common.next_object; |
| |
| /* Copy the entire source object over the destination object */ |
| |
| ACPI_MEMCPY((char *)dest_desc, (char *)source_desc, |
| sizeof(union acpi_operand_object)); |
| |
| /* Restore the saved fields */ |
| |
| dest_desc->common.reference_count = reference_count; |
| dest_desc->common.next_object = next_object; |
| |
| /* New object is not static, regardless of source */ |
| |
| dest_desc->common.flags &= ~AOPOBJ_STATIC_POINTER; |
| |
| /* Handle the objects with extra data */ |
| |
| switch (ACPI_GET_OBJECT_TYPE(dest_desc)) { |
| case ACPI_TYPE_BUFFER: |
| /* |
| * Allocate and copy the actual buffer if and only if: |
| * 1) There is a valid buffer pointer |
| * 2) The buffer has a length > 0 |
| */ |
| if ((source_desc->buffer.pointer) && |
| (source_desc->buffer.length)) { |
| dest_desc->buffer.pointer = |
| ACPI_ALLOCATE(source_desc->buffer.length); |
| if (!dest_desc->buffer.pointer) { |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Copy the actual buffer data */ |
| |
| ACPI_MEMCPY(dest_desc->buffer.pointer, |
| source_desc->buffer.pointer, |
| source_desc->buffer.length); |
| } |
| break; |
| |
| case ACPI_TYPE_STRING: |
| /* |
| * Allocate and copy the actual string if and only if: |
| * 1) There is a valid string pointer |
| * (Pointer to a NULL string is allowed) |
| */ |
| if (source_desc->string.pointer) { |
| dest_desc->string.pointer = |
| ACPI_ALLOCATE((acpi_size) source_desc->string. |
| length + 1); |
| if (!dest_desc->string.pointer) { |
| return (AE_NO_MEMORY); |
| } |
| |
| /* Copy the actual string data */ |
| |
| ACPI_MEMCPY(dest_desc->string.pointer, |
| source_desc->string.pointer, |
| (acpi_size) source_desc->string.length + 1); |
| } |
| break; |
| |
| case ACPI_TYPE_LOCAL_REFERENCE: |
| /* |
| * We copied the reference object, so we now must add a reference |
| * to the object pointed to by the reference |
| * |
| * DDBHandle reference (from Load/load_table is a special reference, |
| * it's Reference.Object is the table index, so does not need to |
| * increase the reference count |
| */ |
| if (source_desc->reference.opcode == AML_LOAD_OP) { |
| break; |
| } |
| |
| acpi_ut_add_reference(source_desc->reference.object); |
| break; |
| |
| case ACPI_TYPE_REGION: |
| /* |
| * We copied the Region Handler, so we now must add a reference |
| */ |
| if (dest_desc->region.handler) { |
| acpi_ut_add_reference(dest_desc->region.handler); |
| } |
| break; |
| |
| default: |
| /* Nothing to do for other simple objects */ |
| break; |
| } |
| |
| return (AE_OK); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_ielement_to_ielement |
| * |
| * PARAMETERS: acpi_pkg_callback |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Copy one package element to another package element |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_ielement_to_ielement(u8 object_type, |
| union acpi_operand_object *source_object, |
| union acpi_generic_state *state, |
| void *context) |
| { |
| acpi_status status = AE_OK; |
| u32 this_index; |
| union acpi_operand_object **this_target_ptr; |
| union acpi_operand_object *target_object; |
| |
| ACPI_FUNCTION_ENTRY(); |
| |
| this_index = state->pkg.index; |
| this_target_ptr = (union acpi_operand_object **) |
| &state->pkg.dest_object->package.elements[this_index]; |
| |
| switch (object_type) { |
| case ACPI_COPY_TYPE_SIMPLE: |
| |
| /* A null source object indicates a (legal) null package element */ |
| |
| if (source_object) { |
| /* |
| * This is a simple object, just copy it |
| */ |
| target_object = |
| acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE |
| (source_object)); |
| if (!target_object) { |
| return (AE_NO_MEMORY); |
| } |
| |
| status = |
| acpi_ut_copy_simple_object(source_object, |
| target_object); |
| if (ACPI_FAILURE(status)) { |
| goto error_exit; |
| } |
| |
| *this_target_ptr = target_object; |
| } else { |
| /* Pass through a null element */ |
| |
| *this_target_ptr = NULL; |
| } |
| break; |
| |
| case ACPI_COPY_TYPE_PACKAGE: |
| |
| /* |
| * This object is a package - go down another nesting level |
| * Create and build the package object |
| */ |
| target_object = |
| acpi_ut_create_package_object(source_object->package.count); |
| if (!target_object) { |
| return (AE_NO_MEMORY); |
| } |
| |
| target_object->common.flags = source_object->common.flags; |
| |
| /* Pass the new package object back to the package walk routine */ |
| |
| state->pkg.this_target_obj = target_object; |
| |
| /* Store the object pointer in the parent package object */ |
| |
| *this_target_ptr = target_object; |
| break; |
| |
| default: |
| return (AE_BAD_PARAMETER); |
| } |
| |
| return (status); |
| |
| error_exit: |
| acpi_ut_remove_reference(target_object); |
| return (status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_ipackage_to_ipackage |
| * |
| * PARAMETERS: *source_obj - Pointer to the source package object |
| * *dest_obj - Where the internal object is returned |
| * |
| * RETURN: Status - the status of the call |
| * |
| * DESCRIPTION: This function is called to copy an internal package object |
| * into another internal package object. |
| * |
| ******************************************************************************/ |
| |
| static acpi_status |
| acpi_ut_copy_ipackage_to_ipackage(union acpi_operand_object *source_obj, |
| union acpi_operand_object *dest_obj, |
| struct acpi_walk_state *walk_state) |
| { |
| acpi_status status = AE_OK; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_ipackage_to_ipackage); |
| |
| dest_obj->common.type = ACPI_GET_OBJECT_TYPE(source_obj); |
| dest_obj->common.flags = source_obj->common.flags; |
| dest_obj->package.count = source_obj->package.count; |
| |
| /* |
| * Create the object array and walk the source package tree |
| */ |
| dest_obj->package.elements = ACPI_ALLOCATE_ZEROED(((acpi_size) |
| source_obj->package. |
| count + |
| 1) * sizeof(void *)); |
| if (!dest_obj->package.elements) { |
| ACPI_ERROR((AE_INFO, "Package allocation failure")); |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| |
| /* |
| * Copy the package element-by-element by walking the package "tree". |
| * This handles nested packages of arbitrary depth. |
| */ |
| status = acpi_ut_walk_package_tree(source_obj, dest_obj, |
| acpi_ut_copy_ielement_to_ielement, |
| walk_state); |
| if (ACPI_FAILURE(status)) { |
| |
| /* On failure, delete the destination package object */ |
| |
| acpi_ut_remove_reference(dest_obj); |
| } |
| |
| return_ACPI_STATUS(status); |
| } |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: acpi_ut_copy_iobject_to_iobject |
| * |
| * PARAMETERS: walk_state - Current walk state |
| * source_desc - The internal object to be copied |
| * dest_desc - Where the copied object is returned |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Copy an internal object to a new internal object |
| * |
| ******************************************************************************/ |
| |
| acpi_status |
| acpi_ut_copy_iobject_to_iobject(union acpi_operand_object *source_desc, |
| union acpi_operand_object **dest_desc, |
| struct acpi_walk_state *walk_state) |
| { |
| acpi_status status = AE_OK; |
| |
| ACPI_FUNCTION_TRACE(ut_copy_iobject_to_iobject); |
| |
| /* Create the top level object */ |
| |
| *dest_desc = |
| acpi_ut_create_internal_object(ACPI_GET_OBJECT_TYPE(source_desc)); |
| if (!*dest_desc) { |
| return_ACPI_STATUS(AE_NO_MEMORY); |
| } |
| |
| /* Copy the object and possible subobjects */ |
| |
| if (ACPI_GET_OBJECT_TYPE(source_desc) == ACPI_TYPE_PACKAGE) { |
| status = |
| acpi_ut_copy_ipackage_to_ipackage(source_desc, *dest_desc, |
| walk_state); |
| } else { |
| status = acpi_ut_copy_simple_object(source_desc, *dest_desc); |
| } |
| |
| return_ACPI_STATUS(status); |
| } |