patch-2.4.6 linux/drivers/acpi/executer/exdyadic.c

• Lines: 875
• Date: Wed Jun 20 17:47:40 2001
• Orig file: v2.4.5/linux/drivers/acpi/executer/exdyadic.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.5/linux/drivers/acpi/executer/exdyadic.c linux/drivers/acpi/executer/exdyadic.c
@@ -0,0 +1,874 @@
+/******************************************************************************
+ *
+ * Module Name: exdyadic - ACPI AML (p-code) execution for dyadic operators
+ *              $Revision: 77 $
+ *
+ *****************************************************************************/
+
+/*
+ *  Copyright (C) 2000, 2001 R. Byron Moore
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "acpi.h"
+#include "acparser.h"
+#include "acnamesp.h"
+#include "acinterp.h"
+#include "acevents.h"
+#include "amlcode.h"
+#include "acdispat.h"
+
+
+#define _COMPONENT          ACPI_EXECUTER
+	 MODULE_NAME         ("exdyadic")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_do_concatenate
+ *
+ * PARAMETERS:  *Obj_desc       - Object to be converted.  Must be an
+ *                                Integer, Buffer, or String
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Concatenate two objects OF THE SAME TYPE.
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ex_do_concatenate (
+	ACPI_OPERAND_OBJECT     *obj_desc,
+	ACPI_OPERAND_OBJECT     *obj_desc2,
+	ACPI_OPERAND_OBJECT     **actual_ret_desc,
+	ACPI_WALK_STATE         *walk_state)
+{
+	ACPI_STATUS             status;
+	u32                     i;
+	ACPI_INTEGER            this_integer;
+	ACPI_OPERAND_OBJECT     *ret_desc;
+	NATIVE_CHAR             *new_buf;
+	u32                     integer_size = sizeof (ACPI_INTEGER);
+
+
+	/*
+	 * There are three cases to handle:
+	 * 1) Two Integers concatenated to produce a buffer
+	 * 2) Two Strings concatenated to produce a string
+	 * 3) Two Buffers concatenated to produce a buffer
+	 */
+	switch (obj_desc->common.type) {
+	case ACPI_TYPE_INTEGER:
+
+		/* Handle both ACPI 1.0 and ACPI 2.0 Integer widths */
+
+		if (walk_state->method_node->flags & ANOBJ_DATA_WIDTH_32) {
+			/*
+			 * We are running a method that exists in a 32-bit ACPI table.
+			 * Truncate the value to 32 bits by zeroing out the upper
+			 * 32-bit field
+			 */
+			integer_size = sizeof (u32);
+		}
+
+		/* Result of two integers is a buffer */
+
+		ret_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+		if (!ret_desc) {
+			return (AE_NO_MEMORY);
+		}
+
+		/* Need enough space for two integers */
+
+		ret_desc->buffer.length = integer_size * 2;
+		new_buf = acpi_ut_callocate (ret_desc->buffer.length);
+		if (!new_buf) {
+			REPORT_ERROR
+				(("Ex_do_concatenate: Buffer allocation failure\n"));
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		ret_desc->buffer.pointer = (u8 *) new_buf;
+
+		/* Convert the first integer */
+
+		this_integer = obj_desc->integer.value;
+		for (i = 0; i < integer_size; i++) {
+			new_buf[i] = (u8) this_integer;
+			this_integer >>= 8;
+		}
+
+		/* Convert the second integer */
+
+		this_integer = obj_desc2->integer.value;
+		for (; i < (integer_size * 2); i++) {
+			new_buf[i] = (u8) this_integer;
+			this_integer >>= 8;
+		}
+
+		break;
+
+
+	case ACPI_TYPE_STRING:
+
+		ret_desc = acpi_ut_create_internal_object (ACPI_TYPE_STRING);
+		if (!ret_desc) {
+			return (AE_NO_MEMORY);
+		}
+
+		/* Operand1 is string  */
+
+		new_buf = acpi_ut_allocate (obj_desc->string.length +
+				  obj_desc2->string.length + 1);
+		if (!new_buf) {
+			REPORT_ERROR
+				(("Ex_do_concatenate: String allocation failure\n"));
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		STRCPY (new_buf, obj_desc->string.pointer);
+		STRCPY (new_buf + obj_desc->string.length,
+				  obj_desc2->string.pointer);
+
+		/* Point the return object to the new string */
+
+		ret_desc->string.pointer = new_buf;
+		ret_desc->string.length = obj_desc->string.length +=
+				  obj_desc2->string.length;
+		break;
+
+
+	case ACPI_TYPE_BUFFER:
+
+		/* Operand1 is a buffer */
+
+		ret_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+		if (!ret_desc) {
+			return (AE_NO_MEMORY);
+		}
+
+		new_buf = acpi_ut_allocate (obj_desc->buffer.length +
+				  obj_desc2->buffer.length);
+		if (!new_buf) {
+			REPORT_ERROR
+				(("Ex_do_concatenate: Buffer allocation failure\n"));
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		MEMCPY (new_buf, obj_desc->buffer.pointer,
+				  obj_desc->buffer.length);
+		MEMCPY (new_buf + obj_desc->buffer.length, obj_desc2->buffer.pointer,
+				  obj_desc2->buffer.length);
+
+		/*
+		 * Point the return object to the new buffer
+		 */
+
+		ret_desc->buffer.pointer    = (u8 *) new_buf;
+		ret_desc->buffer.length     = obj_desc->buffer.length +
+				 obj_desc2->buffer.length;
+		break;
+
+	default:
+		status = AE_AML_INTERNAL;
+		ret_desc = NULL;
+	}
+
+
+	*actual_ret_desc = ret_desc;
+	return (AE_OK);
+
+
+cleanup:
+
+	acpi_ut_remove_reference (ret_desc);
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_dyadic1
+ *
+ * PARAMETERS:  Opcode              - The opcode to be executed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute Type 1 dyadic operator with numeric operands:
+ *              Notify_op
+ *
+ * ALLOCATION:  Deletes both operands
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ex_dyadic1 (
+	u16                     opcode,
+	ACPI_WALK_STATE         *walk_state)
+{
+	ACPI_OPERAND_OBJECT     *obj_desc = NULL;
+	ACPI_OPERAND_OBJECT     *val_desc = NULL;
+	ACPI_NAMESPACE_NODE     *node;
+	ACPI_STATUS             status = AE_OK;
+
+
+	/* Resolve all operands */
+
+	status = acpi_ex_resolve_operands (opcode, WALK_OPERANDS, walk_state);
+	/* Get the operands */
+
+	status |= acpi_ds_obj_stack_pop_object (&val_desc, walk_state);
+	status |= acpi_ds_obj_stack_pop_object (&obj_desc, walk_state);
+	if (ACPI_FAILURE (status)) {
+		/* Invalid parameters on object stack  */
+
+		goto cleanup;
+	}
+
+
+	/* Examine the opcode */
+
+	switch (opcode) {
+
+	/* Def_notify  :=  Notify_op   Notify_object   Notify_value */
+
+	case AML_NOTIFY_OP:
+
+		/* The Obj_desc is actually an Node */
+
+		node = (ACPI_NAMESPACE_NODE *) obj_desc;
+		obj_desc = NULL;
+
+		/* Object must be a device or thermal zone */
+
+		if (node && val_desc) {
+			switch (node->type) {
+			case ACPI_TYPE_DEVICE:
+			case ACPI_TYPE_THERMAL:
+
+				/*
+				 * Dispatch the notify to the appropriate handler
+				 * NOTE: the request is queued for execution after this method
+				 * completes.  The notify handlers are NOT invoked synchronously
+				 * from this thread -- because handlers may in turn run other
+				 * control methods.
+				 */
+
+				status = acpi_ev_queue_notify_request (node,
+						 (u32) val_desc->integer.value);
+				break;
+
+			default:
+				status = AE_AML_OPERAND_TYPE;
+				break;
+			}
+		}
+		break;
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_dyadic1: Unknown dyadic opcode %X\n", opcode));
+		status = AE_AML_BAD_OPCODE;
+	}
+
+
+cleanup:
+
+	/* Always delete both operands */
+
+	acpi_ut_remove_reference (val_desc);
+	acpi_ut_remove_reference (obj_desc);
+
+
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_dyadic2_r
+ *
+ * PARAMETERS:  Opcode              - The opcode to be executed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute Type 2 dyadic operator with numeric operands and
+ *              one or two result operands.
+ *
+ * ALLOCATION:  Deletes one operand descriptor -- other remains on stack
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ex_dyadic2_r (
+	u16                     opcode,
+	ACPI_WALK_STATE         *walk_state,
+	ACPI_OPERAND_OBJECT     **return_desc)
+{
+	ACPI_OPERAND_OBJECT     *obj_desc   = NULL;
+	ACPI_OPERAND_OBJECT     *obj_desc2  = NULL;
+	ACPI_OPERAND_OBJECT     *res_desc   = NULL;
+	ACPI_OPERAND_OBJECT     *res_desc2  = NULL;
+	ACPI_OPERAND_OBJECT     *ret_desc   = NULL;
+	ACPI_OPERAND_OBJECT     *ret_desc2  = NULL;
+	ACPI_STATUS             status      = AE_OK;
+	u32                     num_operands = 3;
+
+
+	/* Resolve all operands */
+
+	status = acpi_ex_resolve_operands (opcode, WALK_OPERANDS, walk_state);
+	/* Get all operands */
+
+	if (AML_DIVIDE_OP == opcode) {
+		num_operands = 4;
+		status |= acpi_ds_obj_stack_pop_object (&res_desc2, walk_state);
+	}
+
+	status |= acpi_ds_obj_stack_pop_object (&res_desc, walk_state);
+	status |= acpi_ds_obj_stack_pop_object (&obj_desc2, walk_state);
+	status |= acpi_ds_obj_stack_pop_object (&obj_desc, walk_state);
+	if (ACPI_FAILURE (status)) {
+		goto cleanup;
+	}
+
+
+	/* Create an internal return object if necessary */
+
+	switch (opcode) {
+	case AML_ADD_OP:
+	case AML_BIT_AND_OP:
+	case AML_BIT_NAND_OP:
+	case AML_BIT_OR_OP:
+	case AML_BIT_NOR_OP:
+	case AML_BIT_XOR_OP:
+	case AML_DIVIDE_OP:
+	case AML_MULTIPLY_OP:
+	case AML_SHIFT_LEFT_OP:
+	case AML_SHIFT_RIGHT_OP:
+	case AML_SUBTRACT_OP:
+
+		ret_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+		if (!ret_desc) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		break;
+	}
+
+
+	/*
+	 * Execute the opcode
+	 */
+
+	switch (opcode) {
+
+	/* Def_add :=  Add_op  Operand1    Operand2    Result  */
+
+	case AML_ADD_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value +
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_and :=  And_op  Operand1    Operand2    Result  */
+
+	case AML_BIT_AND_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value &
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_nAnd := NAnd_op Operand1    Operand2    Result  */
+
+	case AML_BIT_NAND_OP:
+
+		ret_desc->integer.value = ~(obj_desc->integer.value &
+				   obj_desc2->integer.value);
+		break;
+
+
+	/* Def_or  :=  Or_op   Operand1    Operand2    Result  */
+
+	case AML_BIT_OR_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value |
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_nOr :=  NOr_op  Operand1    Operand2    Result  */
+
+	case AML_BIT_NOR_OP:
+
+		ret_desc->integer.value = ~(obj_desc->integer.value |
+				   obj_desc2->integer.value);
+		break;
+
+
+	/* Def_xOr :=  XOr_op  Operand1    Operand2    Result  */
+
+	case AML_BIT_XOR_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value ^
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_divide  :=  Divide_op Dividend Divisor Remainder Quotient */
+
+	case AML_DIVIDE_OP:
+
+		if (!obj_desc2->integer.value) {
+			REPORT_ERROR
+				(("Ex_dyadic2_r/Divide_op: Divide by zero\n"));
+
+			status = AE_AML_DIVIDE_BY_ZERO;
+			goto cleanup;
+		}
+
+		ret_desc2 = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+		if (!ret_desc2) {
+			status = AE_NO_MEMORY;
+			goto cleanup;
+		}
+
+		/* Remainder (modulo) */
+
+		ret_desc->integer.value  = ACPI_MODULO (obj_desc->integer.value,
+				  obj_desc2->integer.value);
+
+		/* Result (what we used to call the quotient) */
+
+		ret_desc2->integer.value = ACPI_DIVIDE (obj_desc->integer.value,
+				  obj_desc2->integer.value);
+		break;
+
+
+	/* Def_multiply := Multiply_op Operand1    Operand2    Result  */
+
+	case AML_MULTIPLY_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value *
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_shift_left  :=  Shift_left_op Operand Shift_count Result */
+
+	case AML_SHIFT_LEFT_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value <<
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_shift_right :=  Shift_right_op  Operand Shift_count Result  */
+
+	case AML_SHIFT_RIGHT_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value >>
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_subtract := Subtract_op Operand1    Operand2    Result  */
+
+	case AML_SUBTRACT_OP:
+
+		ret_desc->integer.value = obj_desc->integer.value -
+				 obj_desc2->integer.value;
+		break;
+
+
+	/* Def_concat  :=  Concat_op   Data1   Data2   Result  */
+
+	case AML_CONCAT_OP:
+
+
+		/*
+		 * Convert the second operand if necessary.  The first operand
+		 * determines the type of the second operand, (See the Data Types
+		 * section of the ACPI specification.)  Both object types are
+		 * guaranteed to be either Integer/String/Buffer by the operand
+		 * resolution mechanism above.
+		 */
+
+		switch (obj_desc->common.type) {
+		case ACPI_TYPE_INTEGER:
+			status = acpi_ex_convert_to_integer (&obj_desc2, walk_state);
+			break;
+
+		case ACPI_TYPE_STRING:
+			status = acpi_ex_convert_to_string (&obj_desc2, walk_state);
+			break;
+
+		case ACPI_TYPE_BUFFER:
+			status = acpi_ex_convert_to_buffer (&obj_desc2, walk_state);
+			break;
+
+		default:
+			status = AE_AML_INTERNAL;
+		}
+
+		if (ACPI_FAILURE (status)) {
+			goto cleanup;
+		}
+
+
+		/*
+		 * Both operands are now known to be the same object type
+		 * (Both are Integer, String, or Buffer), and we can now perform the
+		 * concatenation.
+		 */
+		status = acpi_ex_do_concatenate (obj_desc, obj_desc2, &ret_desc, walk_state);
+		if (ACPI_FAILURE (status)) {
+			goto cleanup;
+		}
+		break;
+
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_dyadic2_r: Unknown dyadic opcode %X\n",
+				opcode));
+		status = AE_AML_BAD_OPCODE;
+		goto cleanup;
+	}
+
+
+	/*
+	 * Store the result of the operation (which is now in Obj_desc) into
+	 * the result descriptor, or the location pointed to by the result
+	 * descriptor (Res_desc).
+	 */
+
+	status = acpi_ex_store (ret_desc, res_desc, walk_state);
+	if (ACPI_FAILURE (status)) {
+		goto cleanup;
+	}
+
+	if (AML_DIVIDE_OP == opcode) {
+		status = acpi_ex_store (ret_desc2, res_desc2, walk_state);
+
+		/*
+		 * Since the remainder is not returned, remove a reference to
+		 * the object we created earlier
+		 */
+
+		acpi_ut_remove_reference (ret_desc2);
+	}
+
+
+cleanup:
+
+	/* Always delete the operands */
+
+	acpi_ut_remove_reference (obj_desc);
+	acpi_ut_remove_reference (obj_desc2);
+
+
+	/* Delete return object on error */
+
+	if (ACPI_FAILURE (status)) {
+		/* On failure, delete the result ops */
+
+		acpi_ut_remove_reference (res_desc);
+		acpi_ut_remove_reference (res_desc2);
+
+		if (ret_desc) {
+			/* And delete the internal return object */
+
+			acpi_ut_remove_reference (ret_desc);
+			ret_desc = NULL;
+		}
+	}
+
+	/* Set the return object and exit */
+
+	*return_desc = ret_desc;
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_dyadic2_s
+ *
+ * PARAMETERS:  Opcode              - The opcode to be executed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute Type 2 dyadic synchronization operator
+ *
+ * ALLOCATION:  Deletes one operand descriptor -- other remains on stack
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ex_dyadic2_s (
+	u16                     opcode,
+	ACPI_WALK_STATE         *walk_state,
+	ACPI_OPERAND_OBJECT     **return_desc)
+{
+	ACPI_OPERAND_OBJECT     *obj_desc;
+	ACPI_OPERAND_OBJECT     *time_desc;
+	ACPI_OPERAND_OBJECT     *ret_desc = NULL;
+	ACPI_STATUS             status;
+
+
+	/* Resolve all operands */
+
+	status = acpi_ex_resolve_operands (opcode, WALK_OPERANDS, walk_state);
+	/* Get all operands */
+
+	status |= acpi_ds_obj_stack_pop_object (&time_desc, walk_state);
+	status |= acpi_ds_obj_stack_pop_object (&obj_desc, walk_state);
+	if (ACPI_FAILURE (status)) {
+		/* Invalid parameters on object stack  */
+
+		goto cleanup;
+	}
+
+
+	/* Create the internal return object */
+
+	ret_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+	if (!ret_desc) {
+		status = AE_NO_MEMORY;
+		goto cleanup;
+	}
+
+	/* Default return value is FALSE, operation did not time out */
+
+	ret_desc->integer.value = 0;
+
+
+	/* Examine the opcode */
+
+	switch (opcode) {
+
+	/* Def_acquire :=  Acquire_op  Mutex_object Timeout */
+
+	case AML_ACQUIRE_OP:
+
+		status = acpi_ex_acquire_mutex (time_desc, obj_desc, walk_state);
+		break;
+
+
+	/* Def_wait := Wait_op Acpi_event_object Timeout */
+
+	case AML_WAIT_OP:
+
+		status = acpi_ex_system_wait_event (time_desc, obj_desc);
+		break;
+
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_dyadic2_s: Unknown dyadic synchronization opcode %X\n", opcode));
+		status = AE_AML_BAD_OPCODE;
+		goto cleanup;
+	}
+
+
+	/*
+	 * Return a boolean indicating if operation timed out
+	 * (TRUE) or not (FALSE)
+	 */
+
+	if (status == AE_TIME) {
+		ret_desc->integer.value = ACPI_INTEGER_MAX;  /* TRUE, op timed out */
+		status = AE_OK;
+	}
+
+
+cleanup:
+
+	/* Delete params */
+
+	acpi_ut_remove_reference (time_desc);
+	acpi_ut_remove_reference (obj_desc);
+
+	/* Delete return object on error */
+
+	if (ACPI_FAILURE (status) &&
+		(ret_desc)) {
+		acpi_ut_remove_reference (ret_desc);
+		ret_desc = NULL;
+	}
+
+
+	/* Set the return object and exit */
+
+	*return_desc = ret_desc;
+	return (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    Acpi_ex_dyadic2
+ *
+ * PARAMETERS:  Opcode              - The opcode to be executed
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Execute Type 2 dyadic operator with numeric operands and
+ *              no result operands
+ *
+ * ALLOCATION:  Deletes one operand descriptor -- other remains on stack
+ *              containing result value
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+acpi_ex_dyadic2 (
+	u16                     opcode,
+	ACPI_WALK_STATE         *walk_state,
+	ACPI_OPERAND_OBJECT     **return_desc)
+{
+	ACPI_OPERAND_OBJECT     *obj_desc;
+	ACPI_OPERAND_OBJECT     *obj_desc2;
+	ACPI_OPERAND_OBJECT     *ret_desc = NULL;
+	ACPI_STATUS             status;
+	u8                      lboolean;
+
+
+	/* Resolve all operands */
+
+	status = acpi_ex_resolve_operands (opcode, WALK_OPERANDS, walk_state);
+	/* Get all operands */
+
+	status |= acpi_ds_obj_stack_pop_object (&obj_desc2, walk_state);
+	status |= acpi_ds_obj_stack_pop_object (&obj_desc, walk_state);
+	if (ACPI_FAILURE (status)) {
+		/* Invalid parameters on object stack  */
+
+		goto cleanup;
+	}
+
+
+	/* Create the internal return object */
+
+	ret_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
+	if (!ret_desc) {
+		status = AE_NO_MEMORY;
+		goto cleanup;
+	}
+
+	/*
+	 * Execute the Opcode
+	 */
+
+	lboolean = FALSE;
+	switch (opcode) {
+
+	/* Def_lAnd := LAnd_op Operand1    Operand2    */
+
+	case AML_LAND_OP:
+
+		lboolean = (u8) (obj_desc->integer.value &&
+				  obj_desc2->integer.value);
+		break;
+
+
+	/* Def_lEqual  :=  LEqual_op   Operand1    Operand2    */
+
+	case AML_LEQUAL_OP:
+
+		lboolean = (u8) (obj_desc->integer.value ==
+				  obj_desc2->integer.value);
+		break;
+
+
+	/* Def_lGreater := LGreater_op Operand1    Operand2    */
+
+	case AML_LGREATER_OP:
+
+		lboolean = (u8) (obj_desc->integer.value >
+				  obj_desc2->integer.value);
+		break;
+
+
+	/* Def_lLess   :=  LLess_op Operand1   Operand2    */
+
+	case AML_LLESS_OP:
+
+		lboolean = (u8) (obj_desc->integer.value <
+				  obj_desc2->integer.value);
+		break;
+
+
+	/* Def_lOr :=  LOr_op  Operand1    Operand2    */
+
+	case AML_LOR_OP:
+
+		lboolean = (u8) (obj_desc->integer.value ||
+				  obj_desc2->integer.value);
+		break;
+
+
+	default:
+
+		REPORT_ERROR (("Acpi_ex_dyadic2: Unknown dyadic opcode %X\n", opcode));
+		status = AE_AML_BAD_OPCODE;
+		goto cleanup;
+		break;
+	}
+
+
+	/* Set return value to logical TRUE (all ones) or FALSE (zero) */
+
+	if (lboolean) {
+		ret_desc->integer.value = ACPI_INTEGER_MAX;
+	}
+	else {
+		ret_desc->integer.value = 0;
+	}
+
+
+cleanup:
+
+	/* Always delete operands */
+
+	acpi_ut_remove_reference (obj_desc);
+	acpi_ut_remove_reference (obj_desc2);
+
+
+	/* Delete return object on error */
+
+	if (ACPI_FAILURE (status) &&
+		(ret_desc)) {
+		acpi_ut_remove_reference (ret_desc);
+		ret_desc = NULL;
+	}
+
+
+	/* Set the return object and exit */
+
+	*return_desc = ret_desc;
+	return (status);
+}
+
+