1 files changed, 751 insertions, 0 deletions

diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
new file mode 100644
index 000000000000..2071a0d2bbbb
--- /dev/null
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -0,0 +1,751 @@
+/******************************************************************************
+ *
+ * Module Name: dswexec - Dispatcher method execution callbacks;
+ *                        dispatch to interpreter.
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, 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/acparser.h>
+#include <acpi/amlcode.h>
+#include <acpi/acdispat.h>
+#include <acpi/acinterp.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acdebug.h>
+#include <acpi/acdisasm.h>
+
+
+#define _COMPONENT          ACPI_DISPATCHER
+         ACPI_MODULE_NAME    ("dswexec")
+
+/*
+ * Dispatch table for opcode classes
+ */
+static ACPI_EXECUTE_OP      acpi_gbl_op_type_dispatch [] = {
+                          acpi_ex_opcode_0A_0T_1R,
+                          acpi_ex_opcode_1A_0T_0R,
+                          acpi_ex_opcode_1A_0T_1R,
+                          acpi_ex_opcode_1A_1T_0R,
+                          acpi_ex_opcode_1A_1T_1R,
+                          acpi_ex_opcode_2A_0T_0R,
+                          acpi_ex_opcode_2A_0T_1R,
+                          acpi_ex_opcode_2A_1T_1R,
+                          acpi_ex_opcode_2A_2T_1R,
+                          acpi_ex_opcode_3A_0T_0R,
+                          acpi_ex_opcode_3A_1T_1R,
+                          acpi_ex_opcode_6A_0T_1R};
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_get_predicate_value
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get the result of a predicate evaluation
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_get_predicate_value (
+        struct acpi_walk_state          *walk_state,
+        union acpi_operand_object       *result_obj) {
+        acpi_status                     status = AE_OK;
+        union acpi_operand_object       *obj_desc;
+        union acpi_operand_object       *local_obj_desc = NULL;
+
+
+        ACPI_FUNCTION_TRACE_PTR ("ds_get_predicate_value", walk_state);
+
+
+        walk_state->control_state->common.state = 0;
+
+        if (result_obj) {
+                status = acpi_ds_result_pop (&obj_desc, walk_state);
+                if (ACPI_FAILURE (status)) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "Could not get result from predicate evaluation, %s\n",
+                                acpi_format_exception (status)));
+
+                        return_ACPI_STATUS (status);
+                }
+        }
+        else {
+                status = acpi_ds_create_operand (walk_state, walk_state->op, 0);
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+
+                status = acpi_ex_resolve_to_value (&walk_state->operands [0], walk_state);
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+
+                obj_desc = walk_state->operands [0];
+        }
+
+        if (!obj_desc) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No predicate obj_desc=%p State=%p\n",
+                        obj_desc, walk_state));
+
+                return_ACPI_STATUS (AE_AML_NO_OPERAND);
+        }
+
+        /*
+         * Result of predicate evaluation must be an Integer
+         * object. Implicitly convert the argument if necessary.
+         */
+        status = acpi_ex_convert_to_integer (obj_desc, &local_obj_desc, 16);
+        if (ACPI_FAILURE (status)) {
+                goto cleanup;
+        }
+
+        if (ACPI_GET_OBJECT_TYPE (local_obj_desc) != ACPI_TYPE_INTEGER) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                        "Bad predicate (not an integer) obj_desc=%p State=%p Type=%X\n",
+                        obj_desc, walk_state, ACPI_GET_OBJECT_TYPE (obj_desc)));
+
+                status = AE_AML_OPERAND_TYPE;
+                goto cleanup;
+        }
+
+        /* Truncate the predicate to 32-bits if necessary */
+
+        acpi_ex_truncate_for32bit_table (local_obj_desc);
+
+        /*
+         * Save the result of the predicate evaluation on
+         * the control stack
+         */
+        if (local_obj_desc->integer.value) {
+                walk_state->control_state->common.value = TRUE;
+        }
+        else {
+                /*
+                 * Predicate is FALSE, we will just toss the
+                 * rest of the package
+                 */
+                walk_state->control_state->common.value = FALSE;
+                status = AE_CTRL_FALSE;
+        }
+
+
+cleanup:
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Completed a predicate eval=%X Op=%p\n",
+                walk_state->control_state->common.value, walk_state->op));
+
+         /* Break to debugger to display result */
+
+        ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (local_obj_desc, walk_state));
+
+        /*
+         * Delete the predicate result object (we know that
+         * we don't need it anymore)
+         */
+        if (local_obj_desc != obj_desc) {
+                acpi_ut_remove_reference (local_obj_desc);
+        }
+        acpi_ut_remove_reference (obj_desc);
+
+        walk_state->control_state->common.state = ACPI_CONTROL_NORMAL;
+        return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_exec_begin_op
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *              out_op          - Return op if a new one is created
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Descending callback used during the execution of control
+ *              methods.  This is where most operators and operands are
+ *              dispatched to the interpreter.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_exec_begin_op (
+        struct acpi_walk_state          *walk_state,
+        union acpi_parse_object         **out_op)
+{
+        union acpi_parse_object         *op;
+        acpi_status                     status = AE_OK;
+        u32                             opcode_class;
+
+
+        ACPI_FUNCTION_TRACE_PTR ("ds_exec_begin_op", walk_state);
+
+
+        op = walk_state->op;
+        if (!op) {
+                status = acpi_ds_load2_begin_op (walk_state, out_op);
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+
+                op = *out_op;
+                walk_state->op = op;
+                walk_state->opcode = op->common.aml_opcode;
+                walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
+
+                if (acpi_ns_opens_scope (walk_state->op_info->object_type)) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
+                                acpi_ut_get_type_name (walk_state->op_info->object_type), op));
+
+                        status = acpi_ds_scope_stack_pop (walk_state);
+                        if (ACPI_FAILURE (status)) {
+                                return_ACPI_STATUS (status);
+                        }
+                }
+        }
+
+        if (op == walk_state->origin) {
+                if (out_op) {
+                        *out_op = op;
+                }
+
+                return_ACPI_STATUS (AE_OK);
+        }
+
+        /*
+         * If the previous opcode was a conditional, this opcode
+         * must be the beginning of the associated predicate.
+         * Save this knowledge in the current scope descriptor
+         */
+        if ((walk_state->control_state) &&
+                (walk_state->control_state->common.state ==
+                        ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Exec predicate Op=%p State=%p\n",
+                                  op, walk_state));
+
+                walk_state->control_state->common.state = ACPI_CONTROL_PREDICATE_EXECUTING;
+
+                /* Save start of predicate */
+
+                walk_state->control_state->control.predicate_op = op;
+        }
+
+
+        opcode_class = walk_state->op_info->class;
+
+        /* We want to send namepaths to the load code */
+
+        if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
+                opcode_class = AML_CLASS_NAMED_OBJECT;
+        }
+
+        /*
+         * Handle the opcode based upon the opcode type
+         */
+        switch (opcode_class) {
+        case AML_CLASS_CONTROL:
+
+                status = acpi_ds_result_stack_push (walk_state);
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+
+                status = acpi_ds_exec_begin_control_op (walk_state, op);
+                break;
+
+
+        case AML_CLASS_NAMED_OBJECT:
+
+                if (walk_state->walk_type == ACPI_WALK_METHOD) {
+                        /*
+                         * Found a named object declaration during method
+                         * execution;  we must enter this object into the
+                         * namespace.  The created object is temporary and
+                         * will be deleted upon completion of the execution
+                         * of this method.
+                         */
+                        status = acpi_ds_load2_begin_op (walk_state, NULL);
+                }
+
+                if (op->common.aml_opcode == AML_REGION_OP) {
+                        status = acpi_ds_result_stack_push (walk_state);
+                }
+                break;
+
+
+        case AML_CLASS_EXECUTE:
+        case AML_CLASS_CREATE:
+
+                /*
+                 * Most operators with arguments.
+                 * Start a new result/operand state
+                 */
+                status = acpi_ds_result_stack_push (walk_state);
+                break;
+
+
+        default:
+                break;
+        }
+
+        /* Nothing to do here during method execution */
+
+        return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_exec_end_op
+ *
+ * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *              Op              - Op that has been just been completed in the
+ *                                walk;  Arguments have now been evaluated.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Ascending callback used during the execution of control
+ *              methods.  The only thing we really need to do here is to
+ *              notice the beginning of IF, ELSE, and WHILE blocks.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_exec_end_op (
+        struct acpi_walk_state          *walk_state)
+{
+        union acpi_parse_object         *op;
+        acpi_status                     status = AE_OK;
+        u32                             op_type;
+        u32                             op_class;
+        union acpi_parse_object         *next_op;
+        union acpi_parse_object         *first_arg;
+
+
+        ACPI_FUNCTION_TRACE_PTR ("ds_exec_end_op", walk_state);
+
+
+        op      = walk_state->op;
+        op_type = walk_state->op_info->type;
+        op_class = walk_state->op_info->class;
+
+        if (op_class == AML_CLASS_UNKNOWN) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown opcode %X\n", op->common.aml_opcode));
+                return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
+        }
+
+        first_arg = op->common.value.arg;
+
+        /* Init the walk state */
+
+        walk_state->num_operands = 0;
+        walk_state->return_desc = NULL;
+        walk_state->result_obj = NULL;
+
+        /* Call debugger for single step support (DEBUG build only) */
+
+        ACPI_DEBUGGER_EXEC (status = acpi_db_single_step (walk_state, op, op_class));
+        ACPI_DEBUGGER_EXEC (if (ACPI_FAILURE (status)) {return_ACPI_STATUS (status);});
+
+        /* Decode the Opcode Class */
+
+        switch (op_class) {
+        case AML_CLASS_ARGUMENT:    /* constants, literals, etc. -- do nothing */
+                break;
+
+
+        case AML_CLASS_EXECUTE:     /* most operators with arguments */
+
+                /* Build resolved operand stack */
+
+                status = acpi_ds_create_operands (walk_state, first_arg);
+                if (ACPI_FAILURE (status)) {
+                        goto cleanup;
+                }
+
+                /* Done with this result state (Now that operand stack is built) */
+
+                status = acpi_ds_result_stack_pop (walk_state);
+                if (ACPI_FAILURE (status)) {
+                        goto cleanup;
+                }
+
+                /*
+                 * All opcodes require operand resolution, with the only exceptions
+                 * being the object_type and size_of operators.
+                 */
+                if (!(walk_state->op_info->flags & AML_NO_OPERAND_RESOLVE)) {
+                        /* Resolve all operands */
+
+                        status = acpi_ex_resolve_operands (walk_state->opcode,
+                                          &(walk_state->operands [walk_state->num_operands -1]),
+                                          walk_state);
+                        if (ACPI_SUCCESS (status)) {
+                                ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
+                                                  acpi_ps_get_opcode_name (walk_state->opcode),
+                                                  walk_state->num_operands, "after ex_resolve_operands");
+                        }
+                }
+
+                if (ACPI_SUCCESS (status)) {
+                        /*
+                         * Dispatch the request to the appropriate interpreter handler
+                         * routine.  There is one routine per opcode "type" based upon the
+                         * number of opcode arguments and return type.
+                         */
+                        status = acpi_gbl_op_type_dispatch[op_type] (walk_state);
+                }
+                else {
+                        /*
+                         * Treat constructs of the form "Store(local_x,local_x)" as noops when the
+                         * Local is uninitialized.
+                         */
+                        if  ((status == AE_AML_UNINITIALIZED_LOCAL) &&
+                                (walk_state->opcode == AML_STORE_OP) &&
+                                (walk_state->operands[0]->common.type == ACPI_TYPE_LOCAL_REFERENCE) &&
+                                (walk_state->operands[1]->common.type == ACPI_TYPE_LOCAL_REFERENCE) &&
+                                (walk_state->operands[0]->reference.opcode ==
+                                 walk_state->operands[1]->reference.opcode) &&
+                                (walk_state->operands[0]->reference.offset ==
+                                 walk_state->operands[1]->reference.offset)) {
+                                status = AE_OK;
+                        }
+                        else {
+                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                        "[%s]: Could not resolve operands, %s\n",
+                                        acpi_ps_get_opcode_name (walk_state->opcode),
+                                        acpi_format_exception (status)));
+                        }
+                }
+
+                /* Always delete the argument objects and clear the operand stack */
+
+                acpi_ds_clear_operands (walk_state);
+
+                /*
+                 * If a result object was returned from above, push it on the
+                 * current result stack
+                 */
+                if (ACPI_SUCCESS (status) &&
+                        walk_state->result_obj) {
+                        status = acpi_ds_result_push (walk_state->result_obj, walk_state);
+                }
+
+                break;
+
+
+        default:
+
+                switch (op_type) {
+                case AML_TYPE_CONTROL:    /* Type 1 opcode, IF/ELSE/WHILE/NOOP */
+
+                        /* 1 Operand, 0 external_result, 0 internal_result */
+
+                        status = acpi_ds_exec_end_control_op (walk_state, op);
+
+                        /* Make sure to properly pop the result stack */
+
+                        if (ACPI_SUCCESS (status)) {
+                                status = acpi_ds_result_stack_pop (walk_state);
+                        }
+                        else if (status == AE_CTRL_PENDING) {
+                                status = acpi_ds_result_stack_pop (walk_state);
+                                if (ACPI_SUCCESS (status)) {
+                                        status = AE_CTRL_PENDING;
+                                }
+                        }
+                        break;
+
+
+                case AML_TYPE_METHOD_CALL:
+
+                        /*
+                         * If the method is referenced from within a package
+                         * declaration, it is not a invocation of the method, just
+                         * a reference to it.
+                         */
+                        if ((op->asl.parent) &&
+                           ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) ||
+                                (op->asl.parent->asl.aml_opcode == AML_VAR_PACKAGE_OP))) {
+                                ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method Reference in a Package, Op=%p\n", op));
+                                op->common.node = (struct acpi_namespace_node *) op->asl.value.arg->asl.node->object;
+                                acpi_ut_add_reference (op->asl.value.arg->asl.node->object);
+                                return_ACPI_STATUS (AE_OK);
+                        }
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method invocation, Op=%p\n", op));
+
+                        /*
+                         * (AML_METHODCALL) Op->Asl.Value.Arg->Asl.Node contains
+                         * the method Node pointer
+                         */
+                        /* next_op points to the op that holds the method name */
+
+                        next_op = first_arg;
+
+                        /* next_op points to first argument op */
+
+                        next_op = next_op->common.next;
+
+                        /*
+                         * Get the method's arguments and put them on the operand stack
+                         */
+                        status = acpi_ds_create_operands (walk_state, next_op);
+                        if (ACPI_FAILURE (status)) {
+                                break;
+                        }
+
+                        /*
+                         * Since the operands will be passed to another control method,
+                         * we must resolve all local references here (Local variables,
+                         * arguments to *this* method, etc.)
+                         */
+                        status = acpi_ds_resolve_operands (walk_state);
+                        if (ACPI_FAILURE (status)) {
+                                /* On error, clear all resolved operands */
+
+                                acpi_ds_clear_operands (walk_state);
+                                break;
+                        }
+
+                        /*
+                         * Tell the walk loop to preempt this running method and
+                         * execute the new method
+                         */
+                        status = AE_CTRL_TRANSFER;
+
+                        /*
+                         * Return now; we don't want to disturb anything,
+                         * especially the operand count!
+                         */
+                        return_ACPI_STATUS (status);
+
+
+                case AML_TYPE_CREATE_FIELD:
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                                "Executing create_field Buffer/Index Op=%p\n", op));
+
+                        status = acpi_ds_load2_end_op (walk_state);
+                        if (ACPI_FAILURE (status)) {
+                                break;
+                        }
+
+                        status = acpi_ds_eval_buffer_field_operands (walk_state, op);
+                        break;
+
+
+                case AML_TYPE_CREATE_OBJECT:
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                                "Executing create_object (Buffer/Package) Op=%p\n", op));
+
+                        switch (op->common.parent->common.aml_opcode) {
+                        case AML_NAME_OP:
+
+                                /*
+                                 * Put the Node on the object stack (Contains the ACPI Name of
+                                 * this object)
+                                 */
+                                walk_state->operands[0] = (void *) op->common.parent->common.node;
+                                walk_state->num_operands = 1;
+
+                                status = acpi_ds_create_node (walk_state, op->common.parent->common.node, op->common.parent);
+                                if (ACPI_FAILURE (status)) {
+                                        break;
+                                }
+
+                                /* Fall through */
+                                /*lint -fallthrough */
+
+                        case AML_INT_EVAL_SUBTREE_OP:
+
+                                status = acpi_ds_eval_data_object_operands (walk_state, op,
+                                                  acpi_ns_get_attached_object (op->common.parent->common.node));
+                                break;
+
+                        default:
+
+                                status = acpi_ds_eval_data_object_operands (walk_state, op, NULL);
+                                break;
+                        }
+
+                        /* Done with this result state (Now that operand stack is built) */
+
+                        status = acpi_ds_result_stack_pop (walk_state);
+                        if (ACPI_FAILURE (status)) {
+                                goto cleanup;
+                        }
+
+                        /*
+                         * If a result object was returned from above, push it on the
+                         * current result stack
+                         */
+                        if (ACPI_SUCCESS (status) &&
+                                walk_state->result_obj) {
+                                status = acpi_ds_result_push (walk_state->result_obj, walk_state);
+                        }
+                        break;
+
+
+                case AML_TYPE_NAMED_FIELD:
+                case AML_TYPE_NAMED_COMPLEX:
+                case AML_TYPE_NAMED_SIMPLE:
+                case AML_TYPE_NAMED_NO_OBJ:
+
+                        status = acpi_ds_load2_end_op (walk_state);
+                        if (ACPI_FAILURE (status)) {
+                                break;
+                        }
+
+                        if (op->common.aml_opcode == AML_REGION_OP) {
+                                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                                        "Executing op_region Address/Length Op=%p\n", op));
+
+                                status = acpi_ds_eval_region_operands (walk_state, op);
+                                if (ACPI_FAILURE (status)) {
+                                        break;
+                                }
+
+                                status = acpi_ds_result_stack_pop (walk_state);
+                        }
+
+                        break;
+
+
+                case AML_TYPE_UNDEFINED:
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Undefined opcode type Op=%p\n", op));
+                        return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
+
+
+                case AML_TYPE_BOGUS:
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+                                "Internal opcode=%X type Op=%p\n",
+                                walk_state->opcode, op));
+                        break;
+
+
+                default:
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "Unimplemented opcode, class=%X type=%X Opcode=%X Op=%p\n",
+                                op_class, op_type, op->common.aml_opcode, op));
+
+                        status = AE_NOT_IMPLEMENTED;
+                        break;
+                }
+        }
+
+        /*
+         * ACPI 2.0 support for 64-bit integers: Truncate numeric
+         * result value if we are executing from a 32-bit ACPI table
+         */
+        acpi_ex_truncate_for32bit_table (walk_state->result_obj);
+
+        /*
+         * Check if we just completed the evaluation of a
+         * conditional predicate
+         */
+
+        if ((ACPI_SUCCESS (status)) &&
+                (walk_state->control_state) &&
+                (walk_state->control_state->common.state ==
+                        ACPI_CONTROL_PREDICATE_EXECUTING) &&
+                (walk_state->control_state->control.predicate_op == op)) {
+                status = acpi_ds_get_predicate_value (walk_state, walk_state->result_obj);
+                walk_state->result_obj = NULL;
+        }
+
+
+cleanup:
+
+        /* Invoke exception handler on error */
+
+        if (ACPI_FAILURE (status) &&
+                acpi_gbl_exception_handler &&
+                !(status & AE_CODE_CONTROL)) {
+                acpi_ex_exit_interpreter ();
+                status = acpi_gbl_exception_handler (status,
+                                 walk_state->method_node->name.integer, walk_state->opcode,
+                                 walk_state->aml_offset, NULL);
+                acpi_ex_enter_interpreter ();
+        }
+
+        if (walk_state->result_obj) {
+                /* Break to debugger to display result */
+
+                ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (walk_state->result_obj, walk_state));
+
+                /*
+                 * Delete the result op if and only if:
+                 * Parent will not use the result -- such as any
+                 * non-nested type2 op in a method (parent will be method)
+                 */
+                acpi_ds_delete_result_if_not_used (op, walk_state->result_obj, walk_state);
+        }
+
+#ifdef _UNDER_DEVELOPMENT
+
+        if (walk_state->parser_state.aml == walk_state->parser_state.aml_end) {
+                acpi_db_method_end (walk_state);
+        }
+#endif
+
+        /* Always clear the object stack */
+
+        walk_state->num_operands = 0;
+
+#ifdef ACPI_DISASSEMBLER
+
+        /* On error, display method locals/args */
+
+        if (ACPI_FAILURE (status)) {
+                acpi_dm_dump_method_info (status, walk_state, op);
+        }
+#endif
+
+        return_ACPI_STATUS (status);
+}
+
+