381 lines
11 KiB
C
381 lines
11 KiB
C
/******************************************************************************
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*
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* Module Name: aslprintf - ASL Printf/Fprintf macro support
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2015, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "aslcompiler.h"
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#include "aslcompiler.y.h"
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#include "amlcode.h"
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#define _COMPONENT ACPI_COMPILER
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ACPI_MODULE_NAME ("aslprintf")
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/* Local prototypes */
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static void
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OpcCreateConcatenateNode (
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ACPI_PARSE_OBJECT *Op,
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ACPI_PARSE_OBJECT *Node);
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static void
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OpcParsePrintf (
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ACPI_PARSE_OBJECT *Op,
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ACPI_PARSE_OBJECT *DestOp);
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/*******************************************************************************
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*
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* FUNCTION: OpcDoPrintf
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*
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* PARAMETERS: Op - printf parse node
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert printf macro to a Store(..., Debug) AML operation.
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*
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******************************************************************************/
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void
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OpcDoPrintf (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_PARSE_OBJECT *DestOp;
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/* Store destination is the Debug op */
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DestOp = TrAllocateNode (PARSEOP_DEBUG);
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DestOp->Asl.AmlOpcode = AML_DEBUG_OP;
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DestOp->Asl.Parent = Op;
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DestOp->Asl.LogicalLineNumber = Op->Asl.LogicalLineNumber;
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OpcParsePrintf (Op, DestOp);
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}
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/*******************************************************************************
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*
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* FUNCTION: OpcDoFprintf
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*
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* PARAMETERS: Op - fprintf parse node
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert fprintf macro to a Store AML operation.
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*
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******************************************************************************/
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void
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OpcDoFprintf (
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ACPI_PARSE_OBJECT *Op)
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{
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ACPI_PARSE_OBJECT *DestOp;
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/* Store destination is the first argument of fprintf */
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DestOp = Op->Asl.Child;
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Op->Asl.Child = DestOp->Asl.Next;
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DestOp->Asl.Next = NULL;
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OpcParsePrintf (Op, DestOp);
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}
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/*******************************************************************************
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*
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* FUNCTION: OpcParsePrintf
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*
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* PARAMETERS: Op - Printf parse node
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* DestOp - Destination of Store operation
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*
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* RETURN: None
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*
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* DESCRIPTION: Convert printf macro to a Store AML operation. The printf
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* macro parse tree is layed out as follows:
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*
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* Op - printf parse op
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* Op->Child - Format string
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* Op->Next - Format string arguments
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*
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******************************************************************************/
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static void
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OpcParsePrintf (
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ACPI_PARSE_OBJECT *Op,
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ACPI_PARSE_OBJECT *DestOp)
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{
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char *Format;
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char *StartPosition = NULL;
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ACPI_PARSE_OBJECT *ArgNode;
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ACPI_PARSE_OBJECT *NextNode;
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UINT32 StringLength = 0;
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char *NewString;
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BOOLEAN StringToProcess = FALSE;
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ACPI_PARSE_OBJECT *NewOp;
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/* Get format string */
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Format = ACPI_CAST_PTR (char, Op->Asl.Child->Asl.Value.String);
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ArgNode = Op->Asl.Child->Asl.Next;
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/*
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* Detach argument list so that we can use a NULL check to distinguish
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* the first concatenation operation we need to make
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*/
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Op->Asl.Child = NULL;
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for (; *Format; ++Format)
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{
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if (*Format != '%')
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{
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if (!StringToProcess)
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{
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/* Mark the beginning of a string */
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StartPosition = Format;
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StringToProcess = TRUE;
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}
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++StringLength;
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continue;
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}
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/* Save string, if any, to new string object and concat it */
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if (StringToProcess)
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{
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NewString = UtStringCacheCalloc (StringLength + 1);
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strncpy (NewString, StartPosition, StringLength);
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NewOp = TrAllocateNode (PARSEOP_STRING_LITERAL);
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NewOp->Asl.Value.String = NewString;
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NewOp->Asl.AmlOpcode = AML_STRING_OP;
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NewOp->Asl.AcpiBtype = ACPI_BTYPE_STRING;
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NewOp->Asl.LogicalLineNumber = Op->Asl.LogicalLineNumber;
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OpcCreateConcatenateNode(Op, NewOp);
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StringLength = 0;
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StringToProcess = FALSE;
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}
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++Format;
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/*
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* We have a format parameter and will need an argument to go
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* with it
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*/
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if (!ArgNode ||
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ArgNode->Asl.ParseOpcode == PARSEOP_DEFAULT_ARG)
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{
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AslError(ASL_ERROR, ASL_MSG_ARG_COUNT_LO, Op, NULL);
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return;
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}
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/*
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* We do not support sub-specifiers of printf (flags, width,
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* precision, length). For specifiers we only support %x/%X for
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* hex or %s for strings. Also, %o for generic "acpi object".
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*/
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switch (*Format)
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{
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case 's':
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if (ArgNode->Asl.ParseOpcode != PARSEOP_STRING_LITERAL)
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{
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AslError(ASL_ERROR, ASL_MSG_INVALID_TYPE, ArgNode,
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"String required");
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return;
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}
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NextNode = ArgNode->Asl.Next;
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ArgNode->Asl.Next = NULL;
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OpcCreateConcatenateNode(Op, ArgNode);
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ArgNode = NextNode;
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continue;
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case 'X':
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case 'x':
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case 'o':
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NextNode = ArgNode->Asl.Next;
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ArgNode->Asl.Next = NULL;
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/*
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* Append an empty string if the first argument is
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* not a string. This will implicitly conver the 2nd
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* concat source to a string per the ACPI specification.
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*/
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if (!Op->Asl.Child)
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{
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NewOp = TrAllocateNode (PARSEOP_STRING_LITERAL);
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NewOp->Asl.Value.String = "";
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NewOp->Asl.AmlOpcode = AML_STRING_OP;
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NewOp->Asl.AcpiBtype = ACPI_BTYPE_STRING;
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NewOp->Asl.LogicalLineNumber = Op->Asl.LogicalLineNumber;
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OpcCreateConcatenateNode(Op, NewOp);
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}
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OpcCreateConcatenateNode(Op, ArgNode);
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ArgNode = NextNode;
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break;
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default:
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AslError(ASL_ERROR, ASL_MSG_INVALID_OPERAND, Op,
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"Unrecognized format specifier");
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continue;
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}
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}
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/* Process any remaining string */
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if (StringToProcess)
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{
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NewString = UtStringCacheCalloc (StringLength + 1);
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strncpy (NewString, StartPosition, StringLength);
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NewOp = TrAllocateNode (PARSEOP_STRING_LITERAL);
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NewOp->Asl.Value.String = NewString;
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NewOp->Asl.AcpiBtype = ACPI_BTYPE_STRING;
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NewOp->Asl.AmlOpcode = AML_STRING_OP;
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NewOp->Asl.LogicalLineNumber = Op->Asl.LogicalLineNumber;
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OpcCreateConcatenateNode(Op, NewOp);
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}
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/*
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* If we get here and there's no child node then Format
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* was an empty string. Just make a no op.
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*/
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if (!Op->Asl.Child)
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{
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Op->Asl.ParseOpcode = PARSEOP_NOOP;
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AslError(ASL_WARNING, ASL_MSG_NULL_STRING, Op,
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"Converted to NOOP");
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return;
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}
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/* Check for erroneous extra arguments */
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if (ArgNode &&
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ArgNode->Asl.ParseOpcode != PARSEOP_DEFAULT_ARG)
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{
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AslError(ASL_WARNING, ASL_MSG_ARG_COUNT_HI, ArgNode,
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"Extra arguments ignored");
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}
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/* Change Op to a Store */
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Op->Asl.ParseOpcode = PARSEOP_STORE;
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Op->Common.AmlOpcode = AML_STORE_OP;
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Op->Asl.CompileFlags = 0;
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/* Disable further optimization */
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Op->Asl.CompileFlags &= ~NODE_COMPILE_TIME_CONST;
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UtSetParseOpName (Op);
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/* Set Store destination */
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Op->Asl.Child->Asl.Next = DestOp;
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}
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/*******************************************************************************
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*
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* FUNCTION: OpcCreateConcatenateNode
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*
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* PARAMETERS: Op - Parse node
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* Node - Parse node to be concatenated
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*
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* RETURN: None
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*
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* DESCRIPTION: Make Node the child of Op. If child node already exists, then
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* concat child with Node and makes concat node the child of Op.
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*
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******************************************************************************/
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static void
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OpcCreateConcatenateNode (
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ACPI_PARSE_OBJECT *Op,
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ACPI_PARSE_OBJECT *Node)
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{
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ACPI_PARSE_OBJECT *NewConcatOp;
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if (!Op->Asl.Child)
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{
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Op->Asl.Child = Node;
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Node->Asl.Parent = Op;
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return;
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}
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NewConcatOp = TrAllocateNode (PARSEOP_CONCATENATE);
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NewConcatOp->Asl.AmlOpcode = AML_CONCAT_OP;
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NewConcatOp->Asl.AcpiBtype = 0x7;
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NewConcatOp->Asl.LogicalLineNumber = Op->Asl.LogicalLineNumber;
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/* First arg is child of Op*/
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NewConcatOp->Asl.Child = Op->Asl.Child;
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Op->Asl.Child->Asl.Parent = NewConcatOp;
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/* Second arg is Node */
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NewConcatOp->Asl.Child->Asl.Next = Node;
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Node->Asl.Parent = NewConcatOp;
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/* Third arg is Zero (not used) */
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NewConcatOp->Asl.Child->Asl.Next->Asl.Next =
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TrAllocateNode (PARSEOP_ZERO);
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NewConcatOp->Asl.Child->Asl.Next->Asl.Next->Asl.Parent =
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NewConcatOp;
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Op->Asl.Child = NewConcatOp;
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NewConcatOp->Asl.Parent = Op;
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}
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