1 /******************************************************************************
3 * Module Name: exoparg2 - AML execution - opcodes with 2 arguments
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2013, Intel Corp.
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45 #define __EXOPARG2_C__
47 #include <contrib/dev/acpica/include/acpi.h>
48 #include <contrib/dev/acpica/include/accommon.h>
49 #include <contrib/dev/acpica/include/acparser.h>
50 #include <contrib/dev/acpica/include/acinterp.h>
51 #include <contrib/dev/acpica/include/acevents.h>
52 #include <contrib/dev/acpica/include/amlcode.h>
55 #define _COMPONENT ACPI_EXECUTER
56 ACPI_MODULE_NAME ("exoparg2")
60 * Naming convention for AML interpreter execution routines.
62 * The routines that begin execution of AML opcodes are named with a common
63 * convention based upon the number of arguments, the number of target operands,
64 * and whether or not a value is returned:
66 * AcpiExOpcode_xA_yT_zR
70 * xA - ARGUMENTS: The number of arguments (input operands) that are
71 * required for this opcode type (1 through 6 args).
72 * yT - TARGETS: The number of targets (output operands) that are required
73 * for this opcode type (0, 1, or 2 targets).
74 * zR - RETURN VALUE: Indicates whether this opcode type returns a value
75 * as the function return (0 or 1).
77 * The AcpiExOpcode* functions are called via the Dispatcher component with
78 * fully resolved operands.
82 /*******************************************************************************
84 * FUNCTION: AcpiExOpcode_2A_0T_0R
86 * PARAMETERS: WalkState - Current walk state
90 * DESCRIPTION: Execute opcode with two arguments, no target, and no return
93 * ALLOCATION: Deletes both operands
95 ******************************************************************************/
98 AcpiExOpcode_2A_0T_0R (
99 ACPI_WALK_STATE *WalkState)
101 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
102 ACPI_NAMESPACE_NODE *Node;
104 ACPI_STATUS Status = AE_OK;
107 ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_0R,
108 AcpiPsGetOpcodeName (WalkState->Opcode));
111 /* Examine the opcode */
113 switch (WalkState->Opcode)
115 case AML_NOTIFY_OP: /* Notify (NotifyObject, NotifyValue) */
117 /* The first operand is a namespace node */
119 Node = (ACPI_NAMESPACE_NODE *) Operand[0];
121 /* Second value is the notify value */
123 Value = (UINT32) Operand[1]->Integer.Value;
125 /* Are notifies allowed on this object? */
127 if (!AcpiEvIsNotifyObject (Node))
129 ACPI_ERROR ((AE_INFO,
130 "Unexpected notify object type [%s]",
131 AcpiUtGetTypeName (Node->Type)));
133 Status = AE_AML_OPERAND_TYPE;
138 * Dispatch the notify to the appropriate handler
139 * NOTE: the request is queued for execution after this method
140 * completes. The notify handlers are NOT invoked synchronously
141 * from this thread -- because handlers may in turn run other
144 Status = AcpiEvQueueNotifyRequest (Node, Value);
149 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
151 Status = AE_AML_BAD_OPCODE;
154 return_ACPI_STATUS (Status);
158 /*******************************************************************************
160 * FUNCTION: AcpiExOpcode_2A_2T_1R
162 * PARAMETERS: WalkState - Current walk state
166 * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets
167 * and one implicit return value.
169 ******************************************************************************/
172 AcpiExOpcode_2A_2T_1R (
173 ACPI_WALK_STATE *WalkState)
175 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
176 ACPI_OPERAND_OBJECT *ReturnDesc1 = NULL;
177 ACPI_OPERAND_OBJECT *ReturnDesc2 = NULL;
181 ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_2T_1R,
182 AcpiPsGetOpcodeName (WalkState->Opcode));
185 /* Execute the opcode */
187 switch (WalkState->Opcode)
191 /* Divide (Dividend, Divisor, RemainderResult QuotientResult) */
193 ReturnDesc1 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
196 Status = AE_NO_MEMORY;
200 ReturnDesc2 = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
203 Status = AE_NO_MEMORY;
207 /* Quotient to ReturnDesc1, remainder to ReturnDesc2 */
209 Status = AcpiUtDivide (Operand[0]->Integer.Value,
210 Operand[1]->Integer.Value,
211 &ReturnDesc1->Integer.Value,
212 &ReturnDesc2->Integer.Value);
213 if (ACPI_FAILURE (Status))
221 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
223 Status = AE_AML_BAD_OPCODE;
227 /* Store the results to the target reference operands */
229 Status = AcpiExStore (ReturnDesc2, Operand[2], WalkState);
230 if (ACPI_FAILURE (Status))
235 Status = AcpiExStore (ReturnDesc1, Operand[3], WalkState);
236 if (ACPI_FAILURE (Status))
243 * Since the remainder is not returned indirectly, remove a reference to
244 * it. Only the quotient is returned indirectly.
246 AcpiUtRemoveReference (ReturnDesc2);
248 if (ACPI_FAILURE (Status))
250 /* Delete the return object */
252 AcpiUtRemoveReference (ReturnDesc1);
255 /* Save return object (the remainder) on success */
259 WalkState->ResultObj = ReturnDesc1;
262 return_ACPI_STATUS (Status);
266 /*******************************************************************************
268 * FUNCTION: AcpiExOpcode_2A_1T_1R
270 * PARAMETERS: WalkState - Current walk state
274 * DESCRIPTION: Execute opcode with two arguments, one target, and a return
277 ******************************************************************************/
280 AcpiExOpcode_2A_1T_1R (
281 ACPI_WALK_STATE *WalkState)
283 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
284 ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
286 ACPI_STATUS Status = AE_OK;
287 ACPI_SIZE Length = 0;
290 ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_1T_1R,
291 AcpiPsGetOpcodeName (WalkState->Opcode));
294 /* Execute the opcode */
296 if (WalkState->OpInfo->Flags & AML_MATH)
298 /* All simple math opcodes (add, etc.) */
300 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
303 Status = AE_NO_MEMORY;
307 ReturnDesc->Integer.Value = AcpiExDoMathOp (WalkState->Opcode,
308 Operand[0]->Integer.Value,
309 Operand[1]->Integer.Value);
310 goto StoreResultToTarget;
313 switch (WalkState->Opcode)
315 case AML_MOD_OP: /* Mod (Dividend, Divisor, RemainderResult (ACPI 2.0) */
317 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
320 Status = AE_NO_MEMORY;
324 /* ReturnDesc will contain the remainder */
326 Status = AcpiUtDivide (Operand[0]->Integer.Value,
327 Operand[1]->Integer.Value,
329 &ReturnDesc->Integer.Value);
332 case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */
334 Status = AcpiExDoConcatenate (Operand[0], Operand[1],
335 &ReturnDesc, WalkState);
338 case AML_TO_STRING_OP: /* ToString (Buffer, Length, Result) (ACPI 2.0) */
340 * Input object is guaranteed to be a buffer at this point (it may have
341 * been converted.) Copy the raw buffer data to a new object of
346 * Get the length of the new string. It is the smallest of:
347 * 1) Length of the input buffer
348 * 2) Max length as specified in the ToString operator
349 * 3) Length of input buffer up to a zero byte (null terminator)
351 * NOTE: A length of zero is ok, and will create a zero-length, null
354 while ((Length < Operand[0]->Buffer.Length) &&
355 (Length < Operand[1]->Integer.Value) &&
356 (Operand[0]->Buffer.Pointer[Length]))
361 /* Allocate a new string object */
363 ReturnDesc = AcpiUtCreateStringObject (Length);
366 Status = AE_NO_MEMORY;
371 * Copy the raw buffer data with no transform.
372 * (NULL terminated already)
374 ACPI_MEMCPY (ReturnDesc->String.Pointer,
375 Operand[0]->Buffer.Pointer, Length);
378 case AML_CONCAT_RES_OP:
380 /* ConcatenateResTemplate (Buffer, Buffer, Result) (ACPI 2.0) */
382 Status = AcpiExConcatTemplate (Operand[0], Operand[1],
383 &ReturnDesc, WalkState);
386 case AML_INDEX_OP: /* Index (Source Index Result) */
388 /* Create the internal return object */
390 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_LOCAL_REFERENCE);
393 Status = AE_NO_MEMORY;
397 /* Initialize the Index reference object */
399 Index = Operand[1]->Integer.Value;
400 ReturnDesc->Reference.Value = (UINT32) Index;
401 ReturnDesc->Reference.Class = ACPI_REFCLASS_INDEX;
404 * At this point, the Source operand is a String, Buffer, or Package.
405 * Verify that the index is within range.
407 switch ((Operand[0])->Common.Type)
409 case ACPI_TYPE_STRING:
411 if (Index >= Operand[0]->String.Length)
413 Length = Operand[0]->String.Length;
414 Status = AE_AML_STRING_LIMIT;
417 ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
420 case ACPI_TYPE_BUFFER:
422 if (Index >= Operand[0]->Buffer.Length)
424 Length = Operand[0]->Buffer.Length;
425 Status = AE_AML_BUFFER_LIMIT;
428 ReturnDesc->Reference.TargetType = ACPI_TYPE_BUFFER_FIELD;
431 case ACPI_TYPE_PACKAGE:
433 if (Index >= Operand[0]->Package.Count)
435 Length = Operand[0]->Package.Count;
436 Status = AE_AML_PACKAGE_LIMIT;
439 ReturnDesc->Reference.TargetType = ACPI_TYPE_PACKAGE;
440 ReturnDesc->Reference.Where = &Operand[0]->Package.Elements [Index];
445 Status = AE_AML_INTERNAL;
449 /* Failure means that the Index was beyond the end of the object */
451 if (ACPI_FAILURE (Status))
453 ACPI_EXCEPTION ((AE_INFO, Status,
454 "Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
455 ACPI_FORMAT_UINT64 (Index), (UINT32) Length));
460 * Save the target object and add a reference to it for the life
463 ReturnDesc->Reference.Object = Operand[0];
464 AcpiUtAddReference (Operand[0]);
466 /* Store the reference to the Target */
468 Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
470 /* Return the reference */
472 WalkState->ResultObj = ReturnDesc;
477 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
479 Status = AE_AML_BAD_OPCODE;
486 if (ACPI_SUCCESS (Status))
489 * Store the result of the operation (which is now in ReturnDesc) into
490 * the Target descriptor.
492 Status = AcpiExStore (ReturnDesc, Operand[2], WalkState);
493 if (ACPI_FAILURE (Status))
498 if (!WalkState->ResultObj)
500 WalkState->ResultObj = ReturnDesc;
507 /* Delete return object on error */
509 if (ACPI_FAILURE (Status))
511 AcpiUtRemoveReference (ReturnDesc);
512 WalkState->ResultObj = NULL;
515 return_ACPI_STATUS (Status);
519 /*******************************************************************************
521 * FUNCTION: AcpiExOpcode_2A_0T_1R
523 * PARAMETERS: WalkState - Current walk state
527 * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value
529 ******************************************************************************/
532 AcpiExOpcode_2A_0T_1R (
533 ACPI_WALK_STATE *WalkState)
535 ACPI_OPERAND_OBJECT **Operand = &WalkState->Operands[0];
536 ACPI_OPERAND_OBJECT *ReturnDesc = NULL;
537 ACPI_STATUS Status = AE_OK;
538 BOOLEAN LogicalResult = FALSE;
541 ACPI_FUNCTION_TRACE_STR (ExOpcode_2A_0T_1R,
542 AcpiPsGetOpcodeName (WalkState->Opcode));
545 /* Create the internal return object */
547 ReturnDesc = AcpiUtCreateInternalObject (ACPI_TYPE_INTEGER);
550 Status = AE_NO_MEMORY;
554 /* Execute the Opcode */
556 if (WalkState->OpInfo->Flags & AML_LOGICAL_NUMERIC)
558 /* LogicalOp (Operand0, Operand1) */
560 Status = AcpiExDoLogicalNumericOp (WalkState->Opcode,
561 Operand[0]->Integer.Value, Operand[1]->Integer.Value,
563 goto StoreLogicalResult;
565 else if (WalkState->OpInfo->Flags & AML_LOGICAL)
567 /* LogicalOp (Operand0, Operand1) */
569 Status = AcpiExDoLogicalOp (WalkState->Opcode, Operand[0],
570 Operand[1], &LogicalResult);
571 goto StoreLogicalResult;
574 switch (WalkState->Opcode)
576 case AML_ACQUIRE_OP: /* Acquire (MutexObject, Timeout) */
578 Status = AcpiExAcquireMutex (Operand[1], Operand[0], WalkState);
579 if (Status == AE_TIME)
581 LogicalResult = TRUE; /* TRUE = Acquire timed out */
587 case AML_WAIT_OP: /* Wait (EventObject, Timeout) */
589 Status = AcpiExSystemWaitEvent (Operand[1], Operand[0]);
590 if (Status == AE_TIME)
592 LogicalResult = TRUE; /* TRUE, Wait timed out */
599 ACPI_ERROR ((AE_INFO, "Unknown AML opcode 0x%X",
601 Status = AE_AML_BAD_OPCODE;
608 * Set return value to according to LogicalResult. logical TRUE (all ones)
609 * Default is FALSE (zero)
613 ReturnDesc->Integer.Value = ACPI_UINT64_MAX;
618 /* Delete return object on error */
620 if (ACPI_FAILURE (Status))
622 AcpiUtRemoveReference (ReturnDesc);
625 /* Save return object on success */
629 WalkState->ResultObj = ReturnDesc;
632 return_ACPI_STATUS (Status);