exoparg1.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:22k
- /******************************************************************************
- *
- * Module Name: exoparg1 - AML execution - opcodes with 1 argument
- * $Revision: 120 $
- *
- *****************************************************************************/
- /*
- * 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 "acdispat.h"
- #include "acinterp.h"
- #include "amlcode.h"
- #include "acnamesp.h"
- #define _COMPONENT ACPI_EXECUTER
- MODULE_NAME ("exoparg1")
- /*!
- * Naming convention for AML interpreter execution routines.
- *
- * The routines that begin execution of AML opcodes are named with a common
- * convention based upon the number of arguments, the number of target operands,
- * and whether or not a value is returned:
- *
- * AcpiExOpcode_xA_yT_zR
- *
- * Where:
- *
- * xA - ARGUMENTS: The number of arguments (input operands) that are
- * required for this opcode type (1 through 6 args).
- * yT - TARGETS: The number of targets (output operands) that are required
- * for this opcode type (0, 1, or 2 targets).
- * zR - RETURN VALUE: Indicates whether this opcode type returns a value
- * as the function return (0 or 1).
- *
- * The AcpiExOpcode* functions are called via the Dispatcher component with
- * fully resolved operands.
- !*/
- /*******************************************************************************
- *
- * FUNCTION: Acpi_ex_opcode_1A_0T_0R
- *
- * PARAMETERS: Walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on
- * object stack
- *
- ******************************************************************************/
- acpi_status
- acpi_ex_opcode_1A_0T_0R (
- acpi_walk_state *walk_state)
- {
- acpi_operand_object **operand = &walk_state->operands[0];
- acpi_status status = AE_OK;
- FUNCTION_TRACE_STR ("Ex_opcode_1A_0T_0R", acpi_ps_get_opcode_name (walk_state->opcode));
- /* Examine the opcode */
- switch (walk_state->opcode) {
- case AML_RELEASE_OP: /* Release (Mutex_object) */
- status = acpi_ex_release_mutex (operand[0], walk_state);
- break;
- case AML_RESET_OP: /* Reset (Event_object) */
- status = acpi_ex_system_reset_event (operand[0]);
- break;
- case AML_SIGNAL_OP: /* Signal (Event_object) */
- status = acpi_ex_system_signal_event (operand[0]);
- break;
- case AML_SLEEP_OP: /* Sleep (Msec_time) */
- acpi_ex_system_do_suspend ((u32) operand[0]->integer.value);
- break;
- case AML_STALL_OP: /* Stall (Usec_time) */
- acpi_ex_system_do_stall ((u32) operand[0]->integer.value);
- break;
- case AML_UNLOAD_OP: /* Unload (Handle) */
- status = acpi_ex_unload_table (operand[0]);
- break;
- default: /* Unknown opcode */
- REPORT_ERROR (("Acpi_ex_opcode_1A_0T_0R: Unknown opcode %Xn",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- break;
- }
- return_ACPI_STATUS (status);
- }
- /*******************************************************************************
- *
- * FUNCTION: Acpi_ex_opcode_1A_1T_0R
- *
- * PARAMETERS: Walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute opcode with one argument, one target, and no
- * return value.
- *
- ******************************************************************************/
- acpi_status
- acpi_ex_opcode_1A_1T_0R (
- acpi_walk_state *walk_state)
- {
- acpi_status status = AE_OK;
- acpi_operand_object **operand = &walk_state->operands[0];
- FUNCTION_TRACE_STR ("Ex_opcode_1A_1T_0R", acpi_ps_get_opcode_name (walk_state->opcode));
- switch (walk_state->opcode) {
- case AML_LOAD_OP:
- status = acpi_ex_load_op (operand[0], operand[1]);
- break;
- default: /* Unknown opcode */
- REPORT_ERROR (("Acpi_ex_opcode_1A_1T_0R: Unknown opcode %Xn",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- goto cleanup;
- }
- cleanup:
- return_ACPI_STATUS (status);
- }
- /*******************************************************************************
- *
- * FUNCTION: Acpi_ex_opcode_1A_1T_1R
- *
- * PARAMETERS: Walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute opcode with one argument, one target, and a
- * return value.
- *
- ******************************************************************************/
- acpi_status
- acpi_ex_opcode_1A_1T_1R (
- acpi_walk_state *walk_state)
- {
- acpi_status status = AE_OK;
- acpi_operand_object **operand = &walk_state->operands[0];
- acpi_operand_object *return_desc = NULL;
- acpi_operand_object *return_desc2 = NULL;
- u32 temp32;
- u32 i;
- u32 j;
- acpi_integer digit;
- FUNCTION_TRACE_STR ("Ex_opcode_1A_1T_1R", acpi_ps_get_opcode_name (walk_state->opcode));
- /* Create a return object of type Integer for most opcodes */
- switch (walk_state->opcode) {
- case AML_BIT_NOT_OP:
- case AML_FIND_SET_LEFT_BIT_OP:
- case AML_FIND_SET_RIGHT_BIT_OP:
- case AML_FROM_BCD_OP:
- case AML_TO_BCD_OP:
- case AML_COND_REF_OF_OP:
- return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
- break;
- }
- switch (walk_state->opcode) {
- case AML_BIT_NOT_OP: /* Not (Operand, Result) */
- return_desc->integer.value = ~operand[0]->integer.value;
- break;
- case AML_FIND_SET_LEFT_BIT_OP: /* Find_set_left_bit (Operand, Result) */
- return_desc->integer.value = operand[0]->integer.value;
- /*
- * Acpi specification describes Integer type as a little
- * endian unsigned value, so this boundary condition is valid.
- */
- for (temp32 = 0; return_desc->integer.value && temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {
- return_desc->integer.value >>= 1;
- }
- return_desc->integer.value = temp32;
- break;
- case AML_FIND_SET_RIGHT_BIT_OP: /* Find_set_right_bit (Operand, Result) */
- return_desc->integer.value = operand[0]->integer.value;
- /*
- * The Acpi specification describes Integer type as a little
- * endian unsigned value, so this boundary condition is valid.
- */
- for (temp32 = 0; return_desc->integer.value && temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {
- return_desc->integer.value <<= 1;
- }
- /* Since the bit position is one-based, subtract from 33 (65) */
- return_desc->integer.value = temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - temp32;
- break;
- case AML_FROM_BCD_OP: /* From_bcd (BCDValue, Result) */
- /*
- * The 64-bit ACPI integer can hold 16 4-bit BCD integers
- */
- return_desc->integer.value = 0;
- for (i = 0; i < ACPI_MAX_BCD_DIGITS; i++) {
- /* Get one BCD digit */
- digit = (acpi_integer) ((operand[0]->integer.value >> (i * 4)) & 0xF);
- /* Check the range of the digit */
- if (digit > 9) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "BCD digit too large: %dn",
- (u32) digit));
- status = AE_AML_NUMERIC_OVERFLOW;
- goto cleanup;
- }
- if (digit > 0) {
- /* Sum into the result with the appropriate power of 10 */
- for (j = 0; j < i; j++) {
- digit *= 10;
- }
- return_desc->integer.value += digit;
- }
- }
- break;
- case AML_TO_BCD_OP: /* To_bcd (Operand, Result) */
- if (operand[0]->integer.value > ACPI_MAX_BCD_VALUE) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "BCD overflow: %8.8X%8.8Xn",
- HIDWORD(operand[0]->integer.value), LODWORD(operand[0]->integer.value)));
- status = AE_AML_NUMERIC_OVERFLOW;
- goto cleanup;
- }
- return_desc->integer.value = 0;
- for (i = 0; i < ACPI_MAX_BCD_DIGITS; i++) {
- /* Divide by nth factor of 10 */
- temp32 = 0;
- digit = operand[0]->integer.value;
- for (j = 0; j < i; j++) {
- acpi_ut_short_divide (&digit, 10, &digit, &temp32);
- }
- /* Create the BCD digit from the remainder above */
- if (digit > 0) {
- return_desc->integer.value += (temp32 << (i * 4));
- }
- }
- break;
- case AML_COND_REF_OF_OP: /* Cond_ref_of (Source_object, Result) */
- /*
- * This op is a little strange because the internal return value is
- * different than the return value stored in the result descriptor
- * (There are really two return values)
- */
- if ((acpi_namespace_node *) operand[0] == acpi_gbl_root_node) {
- /*
- * This means that the object does not exist in the namespace,
- * return FALSE
- */
- return_desc->integer.value = 0;
- /*
- * Must delete the result descriptor since there is no reference
- * being returned
- */
- acpi_ut_remove_reference (operand[1]);
- goto cleanup;
- }
- /* Get the object reference and store it */
- status = acpi_ex_get_object_reference (operand[0], &return_desc2, walk_state);
- if (ACPI_FAILURE (status)) {
- goto cleanup;
- }
- status = acpi_ex_store (return_desc2, operand[1], walk_state);
- /* The object exists in the namespace, return TRUE */
- return_desc->integer.value = ACPI_INTEGER_MAX;
- goto cleanup;
- break;
- case AML_STORE_OP: /* Store (Source, Target) */
- /*
- * A store operand is typically a number, string, buffer or lvalue
- * Be careful about deleting the source object,
- * since the object itself may have been stored.
- */
- status = acpi_ex_store (operand[0], operand[1], walk_state);
- if (ACPI_FAILURE (status)) {
- return_ACPI_STATUS (status);
- }
- /*
- * Normally, we would remove a reference on the Operand[0] parameter;
- * But since it is being used as the internal return object
- * (meaning we would normally increment it), the two cancel out,
- * and we simply don't do anything.
- */
- walk_state->result_obj = operand[0];
- walk_state->operands[0] = NULL; /* Prevent deletion */
- return_ACPI_STATUS (status);
- break;
- /*
- * ACPI 2.0 Opcodes
- */
- case AML_COPY_OP: /* Copy (Source, Target) */
- status = AE_NOT_IMPLEMENTED;
- goto cleanup;
- break;
- case AML_TO_DECSTRING_OP: /* To_decimal_string (Data, Result) */
- status = acpi_ex_convert_to_string (operand[0], &return_desc, 10, ACPI_UINT32_MAX, walk_state);
- break;
- case AML_TO_HEXSTRING_OP: /* To_hex_string (Data, Result) */
- status = acpi_ex_convert_to_string (operand[0], &return_desc, 16, ACPI_UINT32_MAX, walk_state);
- break;
- case AML_TO_BUFFER_OP: /* To_buffer (Data, Result) */
- status = acpi_ex_convert_to_buffer (operand[0], &return_desc, walk_state);
- break;
- case AML_TO_INTEGER_OP: /* To_integer (Data, Result) */
- status = acpi_ex_convert_to_integer (operand[0], &return_desc, walk_state);
- break;
- /*
- * These are two obsolete opcodes
- */
- case AML_SHIFT_LEFT_BIT_OP: /* Shift_left_bit (Source, Bit_num) */
- case AML_SHIFT_RIGHT_BIT_OP: /* Shift_right_bit (Source, Bit_num) */
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s is obsolete and not implementedn",
- acpi_ps_get_opcode_name (walk_state->opcode)));
- status = AE_SUPPORT;
- goto cleanup;
- break;
- default: /* Unknown opcode */
- REPORT_ERROR (("Acpi_ex_opcode_1A_1T_1R: Unknown opcode %Xn",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- goto cleanup;
- }
- /*
- * Store the return value computed above into the target object
- */
- status = acpi_ex_store (return_desc, operand[1], walk_state);
- cleanup:
- walk_state->result_obj = return_desc;
- /* Delete return object on error */
- if (ACPI_FAILURE (status)) {
- acpi_ut_remove_reference (return_desc);
- }
- return_ACPI_STATUS (status);
- }
- /*******************************************************************************
- *
- * FUNCTION: Acpi_ex_opcode_1A_0T_1R
- *
- * PARAMETERS: Walk_state - Current state (contains AML opcode)
- *
- * RETURN: Status
- *
- * DESCRIPTION: Execute opcode with one argument, no target, and a return value
- *
- ******************************************************************************/
- acpi_status
- acpi_ex_opcode_1A_0T_1R (
- acpi_walk_state *walk_state)
- {
- acpi_operand_object **operand = &walk_state->operands[0];
- acpi_operand_object *temp_desc;
- acpi_operand_object *return_desc = NULL;
- acpi_status status = AE_OK;
- u32 type;
- acpi_integer value;
- FUNCTION_TRACE_STR ("Ex_opcode_1A_0T_0R", acpi_ps_get_opcode_name (walk_state->opcode));
- /* Get the operand and decode the opcode */
- switch (walk_state->opcode) {
- case AML_LNOT_OP: /* LNot (Operand) */
- return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
- return_desc->integer.value = !operand[0]->integer.value;
- break;
- case AML_DECREMENT_OP: /* Decrement (Operand) */
- case AML_INCREMENT_OP: /* Increment (Operand) */
- /*
- * Since we are expecting a Reference operand, it
- * can be either a Node or an internal object.
- */
- return_desc = operand[0];
- if (VALID_DESCRIPTOR_TYPE (operand[0], ACPI_DESC_TYPE_INTERNAL)) {
- /* Internal reference object - prevent deletion */
- acpi_ut_add_reference (return_desc);
- }
- /*
- * Convert the Return_desc Reference to a Number
- * (This removes a reference on the Return_desc object)
- */
- status = acpi_ex_resolve_operands (AML_LNOT_OP, &return_desc, walk_state);
- if (ACPI_FAILURE (status)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s: bad operand(s) %sn",
- acpi_ps_get_opcode_name (walk_state->opcode), acpi_format_exception(status)));
- goto cleanup;
- }
- /*
- * Return_desc is now guaranteed to be an Integer object
- * Do the actual increment or decrement
- */
- if (AML_INCREMENT_OP == walk_state->opcode) {
- return_desc->integer.value++;
- }
- else {
- return_desc->integer.value--;
- }
- /* Store the result back in the original descriptor */
- status = acpi_ex_store (return_desc, operand[0], walk_state);
- break;
- case AML_TYPE_OP: /* Object_type (Source_object) */
- if (INTERNAL_TYPE_REFERENCE == operand[0]->common.type) {
- /*
- * Not a Name -- an indirect name pointer would have
- * been converted to a direct name pointer in Resolve_operands
- */
- switch (operand[0]->reference.opcode) {
- case AML_ZERO_OP:
- case AML_ONE_OP:
- case AML_ONES_OP:
- case AML_REVISION_OP:
- /* Constants are of type Integer */
- type = ACPI_TYPE_INTEGER;
- break;
- case AML_DEBUG_OP:
- /* Per 1.0b spec, Debug object is of type "Debug_object" */
- type = ACPI_TYPE_DEBUG_OBJECT;
- break;
- case AML_INDEX_OP:
- /* Get the type of this reference (index into another object) */
- type = operand[0]->reference.target_type;
- if (type == ACPI_TYPE_PACKAGE) {
- /*
- * The main object is a package, we want to get the type
- * of the individual package element that is referenced by
- * the index.
- */
- type = (*(operand[0]->reference.where))->common.type;
- }
- break;
- case AML_LOCAL_OP:
- case AML_ARG_OP:
- type = acpi_ds_method_data_get_type (operand[0]->reference.opcode,
- operand[0]->reference.offset, walk_state);
- break;
- default:
- REPORT_ERROR (("Acpi_ex_opcode_1A_0T_1R/Type_op: Internal error - Unknown Reference subtype %Xn",
- operand[0]->reference.opcode));
- status = AE_AML_INTERNAL;
- goto cleanup;
- }
- }
- else {
- /*
- * It's not a Reference, so it must be a direct name pointer.
- */
- type = acpi_ns_get_type ((acpi_namespace_node *) operand[0]);
- /* Convert internal types to external types */
- switch (type) {
- case INTERNAL_TYPE_REGION_FIELD:
- case INTERNAL_TYPE_BANK_FIELD:
- case INTERNAL_TYPE_INDEX_FIELD:
- type = ACPI_TYPE_FIELD_UNIT;
- }
- }
- /* Allocate a descriptor to hold the type. */
- return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
- return_desc->integer.value = type;
- break;
- case AML_SIZE_OF_OP: /* Size_of (Source_object) */
- temp_desc = operand[0];
- if (VALID_DESCRIPTOR_TYPE (operand[0], ACPI_DESC_TYPE_NAMED)) {
- temp_desc = acpi_ns_get_attached_object ((acpi_namespace_node *) operand[0]);
- }
- if (!temp_desc) {
- value = 0;
- }
- else {
- switch (temp_desc->common.type) {
- case ACPI_TYPE_BUFFER:
- value = temp_desc->buffer.length;
- break;
- case ACPI_TYPE_STRING:
- value = temp_desc->string.length;
- break;
- case ACPI_TYPE_PACKAGE:
- value = temp_desc->package.count;
- break;
- case INTERNAL_TYPE_REFERENCE:
- /* TBD: this must be a reference to a buf/str/pkg?? */
- value = 4;
- break;
- default:
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Not Buf/Str/Pkg - found type %Xn",
- temp_desc->common.type));
- status = AE_AML_OPERAND_TYPE;
- goto cleanup;
- }
- }
- /*
- * Now that we have the size of the object, create a result
- * object to hold the value
- */
- return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
- return_desc->integer.value = value;
- break;
- case AML_REF_OF_OP: /* Ref_of (Source_object) */
- status = acpi_ex_get_object_reference (operand[0], &return_desc, walk_state);
- if (ACPI_FAILURE (status)) {
- goto cleanup;
- }
- break;
- case AML_DEREF_OF_OP: /* Deref_of (Obj_reference) */
- /* Check for a method local or argument */
- if (!VALID_DESCRIPTOR_TYPE (operand[0], ACPI_DESC_TYPE_NAMED)) {
- /*
- * Must resolve/dereference the local/arg reference first
- */
- switch (operand[0]->reference.opcode) {
- /* Set Operand[0] to the value of the local/arg */
- case AML_LOCAL_OP:
- case AML_ARG_OP:
- acpi_ds_method_data_get_value (operand[0]->reference.opcode,
- operand[0]->reference.offset, walk_state, &temp_desc);
- /*
- * Delete our reference to the input object and
- * point to the object just retrieved
- */
- acpi_ut_remove_reference (operand[0]);
- operand[0] = temp_desc;
- break;
- default:
- /* Index op - handled below */
- break;
- }
- }
- /* Operand[0] may have changed from the code above */
- if (VALID_DESCRIPTOR_TYPE (operand[0], ACPI_DESC_TYPE_NAMED)) {
- /* Get the actual object from the Node (This is the dereference) */
- return_desc = ((acpi_namespace_node *) operand[0])->object;
- /* Returning a pointer to the object, add another reference! */
- acpi_ut_add_reference (return_desc);
- }
- else {
- /*
- * This must be a reference object produced by the Index
- * ASL operation -- check internal opcode
- */
- if ((operand[0]->reference.opcode != AML_INDEX_OP) &&
- (operand[0]->reference.opcode != AML_REF_OF_OP)) {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown opcode in ref(%p) - %Xn",
- operand[0], operand[0]->reference.opcode));
- status = AE_TYPE;
- goto cleanup;
- }
- switch (operand[0]->reference.opcode) {
- case AML_INDEX_OP:
- /*
- * Supported target types for the Index operator are
- * 1) A Buffer
- * 2) A Package
- */
- if (operand[0]->reference.target_type == ACPI_TYPE_BUFFER_FIELD) {
- /*
- * The target is a buffer, we must create a new object that
- * contains one element of the buffer, the element pointed
- * to by the index.
- *
- * NOTE: index into a buffer is NOT a pointer to a
- * sub-buffer of the main buffer, it is only a pointer to a
- * single element (byte) of the buffer!
- */
- return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);
- if (!return_desc) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
- temp_desc = operand[0]->reference.object;
- return_desc->integer.value =
- temp_desc->buffer.pointer[operand[0]->reference.offset];
- /* TBD: [Investigate] (see below) Don't add an additional
- * ref!
- */
- }
- else if (operand[0]->reference.target_type == ACPI_TYPE_PACKAGE) {
- /*
- * The target is a package, we want to return the referenced
- * element of the package. We must add another reference to
- * this object, however.
- */
- return_desc = *(operand[0]->reference.where);
- if (!return_desc) {
- /*
- * We can't return a NULL dereferenced value. This is
- * an uninitialized package element and is thus a
- * severe error.
- */
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "NULL package element obj %pn",
- operand[0]));
- status = AE_AML_UNINITIALIZED_ELEMENT;
- goto cleanup;
- }
- acpi_ut_add_reference (return_desc);
- }
- else {
- ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Target_type %X in obj %pn",
- operand[0]->reference.target_type, operand[0]));
- status = AE_AML_OPERAND_TYPE;
- goto cleanup;
- }
- break;
- case AML_REF_OF_OP:
- return_desc = operand[0]->reference.object;
- /* Add another reference to the object! */
- acpi_ut_add_reference (return_desc);
- break;
- }
- }
- break;
- default:
- REPORT_ERROR (("Acpi_ex_opcode_1A_0T_1R: Unknown opcode %Xn",
- walk_state->opcode));
- status = AE_AML_BAD_OPCODE;
- goto cleanup;
- }
- cleanup:
- /* Delete return object on error */
- if (ACPI_FAILURE (status)) {
- acpi_ut_remove_reference (return_desc);
- }
- walk_state->result_obj = return_desc;
- return_ACPI_STATUS (status);
- }