ACPI_PARSE_OBJECT*
AcpiPsAllocOp (
UINT16 Opcode,
UINT8 *Aml)
{
ACPI_PARSE_OBJECT *Op;
const ACPI_OPCODE_INFO *OpInfo;
UINT8 Flags = ACPI_PARSEOP_GENERIC;
ACPI_FUNCTION_ENTRY ();
OpInfo = AcpiPsGetOpcodeInfo (Opcode);
/* Determine type of ParseOp required */
if (OpInfo->Flags & AML_DEFER)
{
Flags = ACPI_PARSEOP_DEFERRED;
}
else if (OpInfo->Flags & AML_NAMED)
{
Flags = ACPI_PARSEOP_NAMED;
}
else if (Opcode == AML_INT_BYTELIST_OP)
{
Flags = ACPI_PARSEOP_BYTELIST;
}
/* Allocate the minimum required size object */
if (Flags == ACPI_PARSEOP_GENERIC)
{
/* The generic op (default) is by far the most common (16 to 1) */
Op = AcpiOsAcquireObject (AcpiGbl_PsNodeCache);
}
else
{
/* Extended parseop */
Op = AcpiOsAcquireObject (AcpiGbl_PsNodeExtCache);
}
/* Initialize the Op */
if (Op)
{
AcpiPsInitOp (Op, Opcode);
Op->Common.Aml = Aml;
Op->Common.Flags = Flags;
}
return (Op);
}
static char *
AcpiGetTagPathname (
ACPI_PARSE_OBJECT *IndexOp,
ACPI_NAMESPACE_NODE *BufferNode,
ACPI_NAMESPACE_NODE *ResourceNode,
UINT32 BitIndex)
{
ACPI_STATUS Status;
UINT32 ResourceBitIndex;
UINT8 ResourceTableIndex;
ACPI_SIZE RequiredSize;
char *Pathname;
AML_RESOURCE *Aml;
ACPI_PARSE_OBJECT *Op;
char *InternalPath;
char *Tag;
/* Get the Op that contains the actual buffer data */
Op = BufferNode->Op->Common.Value.Arg;
Op = Op->Common.Next;
if (!Op)
{
return (NULL);
}
/* Get the individual resource descriptor and validate it */
Aml = ACPI_CAST_PTR (
AML_RESOURCE, &Op->Named.Data[ResourceNode->Value]);
Status = AcpiUtValidateResource (NULL, Aml, &ResourceTableIndex);
if (ACPI_FAILURE (Status))
{
return (NULL);
}
/* Get offset into this descriptor (from offset into entire buffer) */
ResourceBitIndex = BitIndex - ACPI_MUL_8 (ResourceNode->Value);
/* Get the tag associated with this resource descriptor and offset */
Tag = AcpiDmGetResourceTag (ResourceBitIndex, Aml, ResourceTableIndex);
if (!Tag)
{
return (NULL);
}
/*
* Now that we know that we have a reference that can be converted to a
* symbol, change the name of the resource to a unique name.
*/
AcpiDmUpdateResourceName (ResourceNode);
/* Get the full pathname to the parent buffer */
RequiredSize = AcpiNsBuildNormalizedPath (BufferNode, NULL, 0, FALSE);
if (!RequiredSize)
{
return (NULL);
}
Pathname = ACPI_ALLOCATE_ZEROED (RequiredSize + ACPI_PATH_SEGMENT_LENGTH);
if (!Pathname)
{
return (NULL);
}
(void) AcpiNsBuildNormalizedPath (BufferNode, Pathname,
RequiredSize, FALSE);
/*
* Create the full path to the resource and tag by: remove the buffer name,
* append the resource descriptor name, append a dot, append the tag name.
*
* TBD: Always using the full path is a bit brute force, the path can be
* often be optimized with carats (if the original buffer namepath is a
* single nameseg). This doesn't really matter, because these paths do not
* end up in the final compiled AML, it's just an appearance issue for the
* disassembled code.
*/
Pathname[strlen (Pathname) - ACPI_NAME_SIZE] = 0;
strncat (Pathname, ResourceNode->Name.Ascii, ACPI_NAME_SIZE);
strcat (Pathname, ".");
strncat (Pathname, Tag, ACPI_NAME_SIZE);
/* Internalize the namepath to AML format */
AcpiNsInternalizeName (Pathname, &InternalPath);
ACPI_FREE (Pathname);
/* Update the Op with the symbol */
AcpiPsInitOp (IndexOp, AML_INT_NAMEPATH_OP);
IndexOp->Common.Value.String = InternalPath;
/* We will need the tag later. Cheat by putting it in the Node field */
IndexOp->Common.Node = ACPI_CAST_PTR (ACPI_NAMESPACE_NODE, Tag);
return (InternalPath);
}
void
AcpiPsGetNextNamepath (
ACPI_PARSE_STATE *ParserState,
ACPI_PARSE_OBJECT *Arg,
UINT32 *ArgCount,
BOOLEAN MethodCall)
{
NATIVE_CHAR *Path;
ACPI_PARSE_OBJECT *NameOp;
ACPI_STATUS Status;
ACPI_NAMESPACE_NODE *MethodNode = NULL;
ACPI_NAMESPACE_NODE *Node;
ACPI_GENERIC_STATE ScopeInfo;
FUNCTION_TRACE ("PsGetNextNamepath");
Path = AcpiPsGetNextNamestring (ParserState);
if (!Path || !MethodCall)
{
/* Null name case, create a null namepath object */
AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP);
Arg->Value.Name = Path;
return_VOID;
}
if (MethodCall)
{
/*
* Lookup the name in the internal namespace
*/
ScopeInfo.Scope.Node = NULL;
Node = ParserState->StartNode;
if (Node)
{
ScopeInfo.Scope.Node = Node;
}
/*
* Lookup object. We don't want to add anything new to the namespace
* here, however. So we use MODE_EXECUTE. Allow searching of the
* parent tree, but don't open a new scope -- we just want to lookup the
* object (MUST BE mode EXECUTE to perform upsearch)
*/
Status = AcpiNsLookup (&ScopeInfo, Path, ACPI_TYPE_ANY, IMODE_EXECUTE,
NS_SEARCH_PARENT | NS_DONT_OPEN_SCOPE, NULL,
&Node);
if (ACPI_SUCCESS (Status))
{
if (Node->Type == ACPI_TYPE_METHOD)
{
MethodNode = Node;
ACPI_DEBUG_PRINT ((ACPI_DB_PARSE, "method - %p Path=%p\n",
MethodNode, Path));
NameOp = AcpiPsAllocOp (AML_INT_NAMEPATH_OP);
if (NameOp)
{
/* Change arg into a METHOD CALL and attach name to it */
AcpiPsInitOp (Arg, AML_INT_METHODCALL_OP);
NameOp->Value.Name = Path;
/* Point METHODCALL/NAME to the METHOD Node */
NameOp->Node = MethodNode;
AcpiPsAppendArg (Arg, NameOp);
if (!(ACPI_OPERAND_OBJECT *) MethodNode->Object)
{
return_VOID;
}
*ArgCount = ((ACPI_OPERAND_OBJECT *) MethodNode->Object)->Method.ParamCount;
}
return_VOID;
}
/*
* Else this is normal named object reference.
* Just init the NAMEPATH object with the pathname.
* (See code below)
*/
}
}
/*
* Either we didn't find the object in the namespace, or the object is
* something other than a control method. Just initialize the Op with the
* pathname.
*/
AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP);
Arg->Value.Name = Path;
return_VOID;
}
void
AcpiPsGetNextSimpleArg (
ACPI_PARSE_STATE *ParserState,
UINT32 ArgType,
ACPI_PARSE_OBJECT *Arg)
{
FUNCTION_TRACE_U32 ("PsGetNextSimpleArg", ArgType);
switch (ArgType)
{
case ARGP_BYTEDATA:
AcpiPsInitOp (Arg, AML_BYTE_OP);
Arg->Value.Integer = (UINT32) GET8 (ParserState->Aml);
ParserState->Aml++;
break;
case ARGP_WORDDATA:
AcpiPsInitOp (Arg, AML_WORD_OP);
/* Get 2 bytes from the AML stream */
MOVE_UNALIGNED16_TO_32 (&Arg->Value.Integer, ParserState->Aml);
ParserState->Aml += 2;
break;
case ARGP_DWORDDATA:
AcpiPsInitOp (Arg, AML_DWORD_OP);
/* Get 4 bytes from the AML stream */
MOVE_UNALIGNED32_TO_32 (&Arg->Value.Integer, ParserState->Aml);
ParserState->Aml += 4;
break;
case ARGP_QWORDDATA:
AcpiPsInitOp (Arg, AML_QWORD_OP);
/* Get 8 bytes from the AML stream */
MOVE_UNALIGNED64_TO_64 (&Arg->Value.Integer, ParserState->Aml);
ParserState->Aml += 8;
break;
case ARGP_CHARLIST:
AcpiPsInitOp (Arg, AML_STRING_OP);
Arg->Value.String = (char*) ParserState->Aml;
while (GET8 (ParserState->Aml) != '\0')
{
ParserState->Aml++;
}
ParserState->Aml++;
break;
case ARGP_NAME:
case ARGP_NAMESTRING:
AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP);
Arg->Value.Name = AcpiPsGetNextNamestring (ParserState);
break;
}
return_VOID;
}
void
AcpiPsGetNextNamepath (
ACPI_PARSE_STATE *ParserState,
ACPI_PARSE_OBJECT *Arg,
UINT32 *ArgCount,
BOOLEAN MethodCall)
{
NATIVE_CHAR *Path;
ACPI_PARSE_OBJECT *NameOp;
ACPI_PARSE_OBJECT *Op;
ACPI_PARSE_OBJECT *Count;
FUNCTION_TRACE ("PsGetNextNamepath");
Path = AcpiPsGetNextNamestring (ParserState);
if (!Path || !MethodCall)
{
/* Null name case, create a null namepath object */
AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP);
Arg->Value.Name = Path;
return_VOID;
}
if (AcpiGbl_ParsedNamespaceRoot)
{
/*
* Lookup the name in the parsed namespace
*/
Op = NULL;
if (MethodCall)
{
Op = AcpiPsFind (AcpiPsGetParentScope (ParserState),
Path, AML_METHOD_OP, 0);
}
if (Op)
{
if (Op->Opcode == AML_METHOD_OP)
{
/*
* The name refers to a control method, so this namepath is a
* method invocation. We need to 1) Get the number of arguments
* associated with this method, and 2) Change the NAMEPATH
* object into a METHODCALL object.
*/
Count = AcpiPsGetArg (Op, 0);
if (Count && Count->Opcode == AML_BYTE_OP)
{
NameOp = AcpiPsAllocOp (AML_INT_NAMEPATH_OP);
if (NameOp)
{
/* Change arg into a METHOD CALL and attach the name */
AcpiPsInitOp (Arg, AML_INT_METHODCALL_OP);
NameOp->Value.Name = Path;
/* Point METHODCALL/NAME to the METHOD Node */
NameOp->Node = (ACPI_NAMESPACE_NODE *) Op;
AcpiPsAppendArg (Arg, NameOp);
*ArgCount = (UINT32) Count->Value.Integer &
METHOD_FLAGS_ARG_COUNT;
}
}
return_VOID;
}
/*
* Else this is normal named object reference.
* Just init the NAMEPATH object with the pathname.
* (See code below)
*/
}
}
/*
* Either we didn't find the object in the namespace, or the object is
* something other than a control method. Just initialize the Op with the
* pathname
*/
AcpiPsInitOp (Arg, AML_INT_NAMEPATH_OP);
Arg->Value.Name = Path;
return_VOID;
}
