void
AcpiDmIndent (
UINT32 Level)
{
if (!Level)
{
return;
}
AcpiOsPrintf ("%*.s", ACPI_MUL_4 (Level), " ");
}
ACPI_STATUS
AcpiExOpcode_1A_1T_1R (
ACPI_WALK_STATE *WalkState)
{
ACPI_STATUS Status = AE_OK;
ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL;
UINT32 Temp32;
UINT32 i;
UINT64 PowerOfTen;
UINT64 Digit;
ACPI_FUNCTION_TRACE_STR (ExOpcode_1A_1T_1R,
AcpiPsGetOpcodeName (WalkState->Opcode));
/* Examine the AML opcode */
switch (WalkState->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:
/* Create a return object of type Integer for these opcodes */
ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
if (!ReturnDesc)
{
Status = AE_NO_MEMORY;
goto Cleanup;
}
switch (WalkState->Opcode)
{
case AML_BIT_NOT_OP: /* Not (Operand, Result) */
ReturnDesc->Integer.Value = ~Operand[0]->Integer.Value;
break;
case AML_FIND_SET_LEFT_BIT_OP: /* FindSetLeftBit (Operand, Result) */
ReturnDesc->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; ReturnDesc->Integer.Value &&
Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
{
ReturnDesc->Integer.Value >>= 1;
}
ReturnDesc->Integer.Value = Temp32;
break;
case AML_FIND_SET_RIGHT_BIT_OP: /* FindSetRightBit (Operand, Result) */
ReturnDesc->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; ReturnDesc->Integer.Value &&
Temp32 < ACPI_INTEGER_BIT_SIZE; ++Temp32)
{
ReturnDesc->Integer.Value <<= 1;
}
/* Since the bit position is one-based, subtract from 33 (65) */
ReturnDesc->Integer.Value =
Temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - Temp32;
break;
case AML_FROM_BCD_OP: /* FromBcd (BCDValue, Result) */
/*
* The 64-bit ACPI integer can hold 16 4-bit BCD characters
* (if table is 32-bit, integer can hold 8 BCD characters)
* Convert each 4-bit BCD value
*/
PowerOfTen = 1;
ReturnDesc->Integer.Value = 0;
Digit = Operand[0]->Integer.Value;
/* Convert each BCD digit (each is one nybble wide) */
for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
{
/* Get the least significant 4-bit BCD digit */
Temp32 = ((UINT32) Digit) & 0xF;
/* Check the range of the digit */
if (Temp32 > 9)
{
ACPI_ERROR ((AE_INFO,
"BCD digit too large (not decimal): 0x%X",
Temp32));
Status = AE_AML_NUMERIC_OVERFLOW;
goto Cleanup;
}
/* Sum the digit into the result with the current power of 10 */
ReturnDesc->Integer.Value +=
(((UINT64) Temp32) * PowerOfTen);
/* Shift to next BCD digit */
Digit >>= 4;
/* Next power of 10 */
PowerOfTen *= 10;
}
break;
case AML_TO_BCD_OP: /* ToBcd (Operand, Result) */
ReturnDesc->Integer.Value = 0;
Digit = Operand[0]->Integer.Value;
/* Each BCD digit is one nybble wide */
for (i = 0; (i < AcpiGbl_IntegerNybbleWidth) && (Digit > 0); i++)
{
(void) AcpiUtShortDivide (Digit, 10, &Digit, &Temp32);
/*
* Insert the BCD digit that resides in the
* remainder from above
*/
ReturnDesc->Integer.Value |=
(((UINT64) Temp32) << ACPI_MUL_4 (i));
}
/* Overflow if there is any data left in Digit */
if (Digit > 0)
{
ACPI_ERROR ((AE_INFO,
"Integer too large to convert to BCD: 0x%8.8X%8.8X",
ACPI_FORMAT_UINT64 (Operand[0]->Integer.Value)));
Status = AE_AML_NUMERIC_OVERFLOW;
goto Cleanup;
}
break;
case AML_COND_REF_OF_OP: /* CondRefOf (SourceObject, 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] == AcpiGbl_RootNode)
{
/*
* This means that the object does not exist in the namespace,
* return FALSE
*/
ReturnDesc->Integer.Value = 0;
goto Cleanup;
}
/* Get the object reference, store it, and remove our reference */
Status = AcpiExGetObjectReference (Operand[0],
&ReturnDesc2, WalkState);
if (ACPI_FAILURE (Status))
{
goto Cleanup;
}
Status = AcpiExStore (ReturnDesc2, Operand[1], WalkState);
AcpiUtRemoveReference (ReturnDesc2);
/* The object exists in the namespace, return TRUE */
ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
goto Cleanup;
default:
/* No other opcodes get here */
break;
}
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 = AcpiExStore (Operand[0], Operand[1], WalkState);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* It is possible that the Store already produced a return object */
if (!WalkState->ResultObj)
{
/*
* 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.
*/
WalkState->ResultObj = Operand[0];
WalkState->Operands[0] = NULL; /* Prevent deletion */
}
return_ACPI_STATUS (Status);
/*
* ACPI 2.0 Opcodes
*/
case AML_COPY_OP: /* Copy (Source, Target) */
Status = AcpiUtCopyIobjectToIobject (
Operand[0], &ReturnDesc, WalkState);
break;
case AML_TO_DECSTRING_OP: /* ToDecimalString (Data, Result) */
Status = AcpiExConvertToString (
Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_DECIMAL);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_TO_HEXSTRING_OP: /* ToHexString (Data, Result) */
Status = AcpiExConvertToString (
Operand[0], &ReturnDesc, ACPI_EXPLICIT_CONVERT_HEX);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_TO_BUFFER_OP: /* ToBuffer (Data, Result) */
Status = AcpiExConvertToBuffer (Operand[0], &ReturnDesc);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_TO_INTEGER_OP: /* ToInteger (Data, Result) */
/* Perform "explicit" conversion */
Status = AcpiExConvertToInteger (Operand[0], &ReturnDesc, 0);
if (ReturnDesc == Operand[0])
{
/* No conversion performed, add ref to handle return value */
AcpiUtAddReference (ReturnDesc);
}
break;
case AML_SHIFT_LEFT_BIT_OP: /* ShiftLeftBit (Source, BitNum) */
case AML_SHIFT_RIGHT_BIT_OP: /* ShiftRightBit (Source, BitNum) */
/* These are two obsolete opcodes */
ACPI_ERROR ((AE_INFO,
"%s is obsolete and not implemented",
AcpiPsGetOpcodeName (WalkState->Opcode)));
Status = AE_SUPPORT;
goto Cleanup;
default: /* Unknown opcode */
ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
WalkState->Opcode));
Status = AE_AML_BAD_OPCODE;
goto Cleanup;
}
if (ACPI_SUCCESS (Status))
{
/* Store the return value computed above into the target object */
Status = AcpiExStore (ReturnDesc, Operand[1], WalkState);
}
Cleanup:
/* Delete return object on error */
if (ACPI_FAILURE (Status))
{
AcpiUtRemoveReference (ReturnDesc);
}
/* Save return object on success */
else if (!WalkState->ResultObj)
{
WalkState->ResultObj = ReturnDesc;
}
return_ACPI_STATUS (Status);
}
static UINT32
AcpiExConvertToAscii (
UINT64 Integer,
UINT16 Base,
UINT8 *String,
UINT8 DataWidth)
{
UINT64 Digit;
UINT32 i;
UINT32 j;
UINT32 k = 0;
UINT32 HexLength;
UINT32 DecimalLength;
UINT32 Remainder;
BOOLEAN SupressZeros;
ACPI_FUNCTION_ENTRY ();
switch (Base)
{
case 10:
/* Setup max length for the decimal number */
switch (DataWidth)
{
case 1:
DecimalLength = ACPI_MAX8_DECIMAL_DIGITS;
break;
case 4:
DecimalLength = ACPI_MAX32_DECIMAL_DIGITS;
break;
case 8:
default:
DecimalLength = ACPI_MAX64_DECIMAL_DIGITS;
break;
}
SupressZeros = TRUE; /* No leading zeros */
Remainder = 0;
for (i = DecimalLength; i > 0; i--)
{
/* Divide by nth factor of 10 */
Digit = Integer;
for (j = 0; j < i; j++)
{
(void) AcpiUtShortDivide (Digit, 10, &Digit, &Remainder);
}
/* Handle leading zeros */
if (Remainder != 0)
{
SupressZeros = FALSE;
}
if (!SupressZeros)
{
String[k] = (UINT8) (ACPI_ASCII_ZERO + Remainder);
k++;
}
}
break;
case 16:
/* HexLength: 2 ascii hex chars per data byte */
HexLength = ACPI_MUL_2 (DataWidth);
for (i = 0, j = (HexLength-1); i < HexLength; i++, j--)
{
/* Get one hex digit, most significant digits first */
String[k] = (UINT8) AcpiUtHexToAsciiChar (Integer, ACPI_MUL_4 (j));
k++;
}
break;
default:
return (0);
}
/*
* Since leading zeros are suppressed, we must check for the case where
* the integer equals 0
*
* Finally, null terminate the string and return the length
*/
if (!k)
{
String [0] = ACPI_ASCII_ZERO;
k = 1;
}
String [k] = 0;
return ((UINT32) k);
}
static u32
acpi_ex_convert_to_ascii(acpi_integer integer,
u16 base, u8 * string, u8 data_width)
{
acpi_integer digit;
acpi_native_uint i;
acpi_native_uint j;
acpi_native_uint k = 0;
acpi_native_uint hex_length;
acpi_native_uint decimal_length;
u32 remainder;
u8 supress_zeros;
ACPI_FUNCTION_ENTRY();
switch (base) {
case 10:
/* Setup max length for the decimal number */
switch (data_width) {
case 1:
decimal_length = ACPI_MAX8_DECIMAL_DIGITS;
break;
case 4:
decimal_length = ACPI_MAX32_DECIMAL_DIGITS;
break;
case 8:
default:
decimal_length = ACPI_MAX64_DECIMAL_DIGITS;
break;
}
supress_zeros = TRUE; /* No leading zeros */
remainder = 0;
for (i = decimal_length; i > 0; i--) {
/* Divide by nth factor of 10 */
digit = integer;
for (j = 0; j < i; j++) {
(void)acpi_ut_short_divide(digit, 10, &digit,
&remainder);
}
/* Handle leading zeros */
if (remainder != 0) {
supress_zeros = FALSE;
}
if (!supress_zeros) {
string[k] = (u8) (ACPI_ASCII_ZERO + remainder);
k++;
}
}
break;
case 16:
/* hex_length: 2 ascii hex chars per data byte */
hex_length = (acpi_native_uint) ACPI_MUL_2(data_width);
for (i = 0, j = (hex_length - 1); i < hex_length; i++, j--) {
/* Get one hex digit, most significant digits first */
string[k] =
(u8) acpi_ut_hex_to_ascii_char(integer,
ACPI_MUL_4(j));
k++;
}
break;
default:
return (0);
}
/*
* Since leading zeros are supressed, we must check for the case where
* the integer equals 0
*
* Finally, null terminate the string and return the length
*/
if (!k) {
string[0] = ACPI_ASCII_ZERO;
k = 1;
}
string[k] = 0;
return ((u32) k);
}
ACPI_STATUS
AcpiNsConvertToBuffer (
ACPI_OPERAND_OBJECT *OriginalObject,
ACPI_OPERAND_OBJECT **ReturnObject)
{
ACPI_OPERAND_OBJECT *NewObject;
ACPI_STATUS Status;
ACPI_OPERAND_OBJECT **Elements;
UINT32 *DwordBuffer;
UINT32 Count;
UINT32 i;
switch (OriginalObject->Common.Type)
{
case ACPI_TYPE_INTEGER:
/*
* Integer-to-Buffer conversion.
* Convert the Integer to a packed-byte buffer. _MAT and other
* objects need this sometimes, if a read has been performed on a
* Field object that is less than or equal to the global integer
* size (32 or 64 bits).
*/
Status = AcpiExConvertToBuffer (OriginalObject, &NewObject);
if (ACPI_FAILURE (Status))
{
return (Status);
}
break;
case ACPI_TYPE_STRING:
/* String-to-Buffer conversion. Simple data copy */
NewObject = AcpiUtCreateBufferObject
(OriginalObject->String.Length);
if (!NewObject)
{
return (AE_NO_MEMORY);
}
memcpy (NewObject->Buffer.Pointer,
OriginalObject->String.Pointer, OriginalObject->String.Length);
break;
case ACPI_TYPE_PACKAGE:
/*
* This case is often seen for predefined names that must return a
* Buffer object with multiple DWORD integers within. For example,
* _FDE and _GTM. The Package can be converted to a Buffer.
*/
/* All elements of the Package must be integers */
Elements = OriginalObject->Package.Elements;
Count = OriginalObject->Package.Count;
for (i = 0; i < Count; i++)
{
if ((!*Elements) ||
((*Elements)->Common.Type != ACPI_TYPE_INTEGER))
{
return (AE_AML_OPERAND_TYPE);
}
Elements++;
}
/* Create the new buffer object to replace the Package */
NewObject = AcpiUtCreateBufferObject (ACPI_MUL_4 (Count));
if (!NewObject)
{
return (AE_NO_MEMORY);
}
/* Copy the package elements (integers) to the buffer as DWORDs */
Elements = OriginalObject->Package.Elements;
DwordBuffer = ACPI_CAST_PTR (UINT32, NewObject->Buffer.Pointer);
for (i = 0; i < Count; i++)
{
*DwordBuffer = (UINT32) (*Elements)->Integer.Value;
DwordBuffer++;
Elements++;
}
break;
default:
return (AE_AML_OPERAND_TYPE);
}
*ReturnObject = NewObject;
return (AE_OK);
}
acpi_status
acpi_ns_convert_to_buffer(union acpi_operand_object *original_object,
union acpi_operand_object **return_object)
{
union acpi_operand_object *new_object;
acpi_status status;
union acpi_operand_object **elements;
u32 *dword_buffer;
u32 count;
u32 i;
switch (original_object->common.type) {
case ACPI_TYPE_INTEGER:
/*
* Integer-to-Buffer conversion.
* Convert the Integer to a packed-byte buffer. _MAT and other
* objects need this sometimes, if a read has been performed on a
* Field object that is less than or equal to the global integer
* size (32 or 64 bits).
*/
status =
acpi_ex_convert_to_buffer(original_object, &new_object);
if (ACPI_FAILURE(status)) {
return (status);
}
break;
case ACPI_TYPE_STRING:
/* String-to-Buffer conversion. Simple data copy */
new_object =
acpi_ut_create_buffer_object(original_object->string.
length);
if (!new_object) {
return (AE_NO_MEMORY);
}
ACPI_MEMCPY(new_object->buffer.pointer,
original_object->string.pointer,
original_object->string.length);
break;
case ACPI_TYPE_PACKAGE:
/*
* This case is often seen for predefined names that must return a
* Buffer object with multiple DWORD integers within. For example,
* _FDE and _GTM. The Package can be converted to a Buffer.
*/
/* All elements of the Package must be integers */
elements = original_object->package.elements;
count = original_object->package.count;
for (i = 0; i < count; i++) {
if ((!*elements) ||
((*elements)->common.type != ACPI_TYPE_INTEGER)) {
return (AE_AML_OPERAND_TYPE);
}
elements++;
}
/* Create the new buffer object to replace the Package */
new_object = acpi_ut_create_buffer_object(ACPI_MUL_4(count));
if (!new_object) {
return (AE_NO_MEMORY);
}
/* Copy the package elements (integers) to the buffer as DWORDs */
elements = original_object->package.elements;
dword_buffer = ACPI_CAST_PTR(u32, new_object->buffer.pointer);
for (i = 0; i < count; i++) {
*dword_buffer = (u32)(*elements)->integer.value;
dword_buffer++;
elements++;
}
break;
default:
return (AE_AML_OPERAND_TYPE);
}
*return_object = new_object;
return (AE_OK);
}
acpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state)
{
acpi_status status = AE_OK;
union acpi_operand_object **operand = &walk_state->operands[0];
union acpi_operand_object *return_desc = NULL;
union acpi_operand_object *return_desc2 = NULL;
u32 temp32;
u32 i;
acpi_integer power_of_ten;
acpi_integer digit;
ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_1T_1R,
acpi_ps_get_opcode_name(walk_state->opcode));
/* Examine the AML opcode */
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:
/* Create a return object of type Integer for these opcodes */
return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER);
if (!return_desc) {
status = AE_NO_MEMORY;
goto cleanup;
}
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 characters
* (if table is 32-bit, integer can hold 8 BCD characters)
* Convert each 4-bit BCD value
*/
power_of_ten = 1;
return_desc->integer.value = 0;
digit = operand[0]->integer.value;
/* Convert each BCD digit (each is one nybble wide) */
for (i = 0;
(i < acpi_gbl_integer_nybble_width) && (digit > 0);
i++) {
/* Get the least significant 4-bit BCD digit */
temp32 = ((u32) digit) & 0xF;
/* Check the range of the digit */
if (temp32 > 9) {
ACPI_ERROR((AE_INFO,
"BCD digit too large (not decimal): 0x%X",
temp32));
status = AE_AML_NUMERIC_OVERFLOW;
goto cleanup;
}
/* Sum the digit into the result with the current power of 10 */
return_desc->integer.value +=
(((acpi_integer) temp32) * power_of_ten);
/* Shift to next BCD digit */
digit >>= 4;
/* Next power of 10 */
power_of_ten *= 10;
}
break;
case AML_TO_BCD_OP: /* to_bcd (Operand, Result) */
return_desc->integer.value = 0;
digit = operand[0]->integer.value;
/* Each BCD digit is one nybble wide */
for (i = 0;
(i < acpi_gbl_integer_nybble_width) && (digit > 0);
i++) {
(void)acpi_ut_short_divide(digit, 10, &digit,
&temp32);
/*
* Insert the BCD digit that resides in the
* remainder from above
*/
return_desc->integer.value |=
(((acpi_integer) temp32) << ACPI_MUL_4(i));
}
/* Overflow if there is any data left in Digit */
if (digit > 0) {
ACPI_ERROR((AE_INFO,
"Integer too large to convert to BCD: %8.8X%8.8X",
ACPI_FORMAT_UINT64(operand[0]->
integer.value)));
status = AE_AML_NUMERIC_OVERFLOW;
goto cleanup;
}
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 ((struct 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;
goto cleanup;
}
/* Get the object reference, store it, and remove our reference */
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);
acpi_ut_remove_reference(return_desc2);
/* The object exists in the namespace, return TRUE */
return_desc->integer.value = ACPI_INTEGER_MAX;
goto cleanup;
default:
/* No other opcodes get here */
break;
}
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);
}
/* It is possible that the Store already produced a return object */
if (!walk_state->result_obj) {
/*
* 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);
/*
* ACPI 2.0 Opcodes
*/
case AML_COPY_OP: /* Copy (Source, Target) */
status =
acpi_ut_copy_iobject_to_iobject(operand[0], &return_desc,
walk_state);
break;
case AML_TO_DECSTRING_OP: /* to_decimal_string (Data, Result) */
status = acpi_ex_convert_to_string(operand[0], &return_desc,
ACPI_EXPLICIT_CONVERT_DECIMAL);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_TO_HEXSTRING_OP: /* to_hex_string (Data, Result) */
status = acpi_ex_convert_to_string(operand[0], &return_desc,
ACPI_EXPLICIT_CONVERT_HEX);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_TO_BUFFER_OP: /* to_buffer (Data, Result) */
status = acpi_ex_convert_to_buffer(operand[0], &return_desc);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_TO_INTEGER_OP: /* to_integer (Data, Result) */
status = acpi_ex_convert_to_integer(operand[0], &return_desc,
ACPI_ANY_BASE);
if (return_desc == operand[0]) {
/* No conversion performed, add ref to handle return value */
acpi_ut_add_reference(return_desc);
}
break;
case AML_SHIFT_LEFT_BIT_OP: /* shift_left_bit (Source, bit_num) */
case AML_SHIFT_RIGHT_BIT_OP: /* shift_right_bit (Source, bit_num) */
/* These are two obsolete opcodes */
ACPI_ERROR((AE_INFO,
"%s is obsolete and not implemented",
acpi_ps_get_opcode_name(walk_state->opcode)));
status = AE_SUPPORT;
goto cleanup;
default: /* Unknown opcode */
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X",
walk_state->opcode));
status = AE_AML_BAD_OPCODE;
goto cleanup;
}
if (ACPI_SUCCESS(status)) {
/* Store the return value computed above into the target object */
status = acpi_ex_store(return_desc, operand[1], walk_state);
}
cleanup:
/* Delete return object on error */
if (ACPI_FAILURE(status)) {
acpi_ut_remove_reference(return_desc);
}
/* Save return object on success */
else if (!walk_state->result_obj) {
walk_state->result_obj = return_desc;
}
return_ACPI_STATUS(status);
}