/******************************************************************************
*
* Module Name: axutils - Utility functions for acpixtract tool.
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2019, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*/
#include "acpixtract.h"
/*******************************************************************************
*
* FUNCTION: AxCheckAscii
*
* PARAMETERS: Name - Ascii string, at least as long as Count
* Count - Number of characters to check
*
* RETURN: None
*
* DESCRIPTION: Ensure that the requested number of characters are printable
* Ascii characters. Sets non-printable and null chars to <space>.
*
******************************************************************************/
void
AxCheckAscii (
char *Name,
int Count)
{
int i;
for (i = 0; i < Count; i++)
{
if (!Name[i] || !isprint ((int) Name[i]))
{
Name[i] = ' ';
}
}
}
/*******************************************************************************
*
* FUNCTION: AxIsFileAscii
*
* PARAMETERS: Handle - To open input file
*
* RETURN: TRUE if file is entirely ASCII and printable
*
* DESCRIPTION: Verify that the input file is entirely ASCII.
*
******************************************************************************/
BOOLEAN
AxIsFileAscii (
FILE *Handle)
{
UINT8 Byte;
UINT32 Offset = 0;
/* Read the entire file */
fseek (Handle, 0, SEEK_SET);
while (fread (&Byte, 1, 1, Handle) == 1)
{
/*
* Ignore null characters. Some acpidump-type utilities insert
* a few of these, probably a bug in the utility. As long as these
* characters are in lines that are tossed (non-data), they
* won't cause a problem.
*/
if (!Byte)
{
continue;
}
/* Check for an ASCII character */
if (!ACPI_IS_ASCII (Byte))
{
printf ("Found non-ascii char: %2.2X at file offset %u (0x%X)\n",
Byte, Offset, Offset);
if (!Gbl_ForceExtraction)
{
goto ErrorExit;
}
}
/* Ensure character is either printable or a "space" char */
else if (!isprint (Byte) && !isspace (Byte))
{
printf ("Found non-printable char: %2.2X at file offset %u (0x%X)\n",
Byte, Offset, Offset);
if (!Gbl_ForceExtraction)
{
goto ErrorExit;
}
}
Offset++;
}
/* File is OK (100% ASCII) */
fseek (Handle, 0, SEEK_SET);
return (TRUE);
ErrorExit:
printf ("File appears to be binary "
"(contains non-text or non-ascii characters)\n");
fseek (Handle, 0, SEEK_SET);
return (FALSE);
}
/******************************************************************************
*
* FUNCTION: AxIsEmptyLine
*
* PARAMETERS: Buffer - Line from input file
*
* RETURN: TRUE if line is empty (zero or more blanks only)
*
* DESCRIPTION: Determine if an input line is empty.
*
******************************************************************************/
BOOLEAN
AxIsEmptyLine (
char *Buffer)
{
/* Skip all spaces */
while (*Buffer == ' ')
{
Buffer++;
}
/* Line is empty when a Unix or DOS-style line terminator is found. */
if ((*Buffer == '\r') || (*Buffer == '\n'))
{
return (1);
}
return (0);
}
/******************************************************************************
*
* FUNCTION: AxIsHexDataLine
*
* PARAMETERS: None
*
* RETURN: Status. 1 if the table header is valid, 0 otherwise.
*
* DESCRIPTION: Check for a valid line of hex data of the form:
*
* 00a0: 0c 00 00 00 03 00 00 00 43 48 41 35 0c 00 00 00 ........CHA5....
*
******************************************************************************/
BOOLEAN
AxIsHexDataLine (
void)
{
if (AxIsEmptyLine (Gbl_LineBuffer) ||
(Gbl_LineBuffer[0] != ' '))
{
return (FALSE);
}
if (!strstr (Gbl_LineBuffer, ": "))
{
/* Not valid data line */
return (FALSE);
}
return (TRUE);
}
/******************************************************************************
*
* FUNCTION: AxIsDataBlockHeader
*
* PARAMETERS: None
*
* RETURN: Status. 1 if the table header is valid, 0 otherwise.
*
* DESCRIPTION: Check if the ACPI table identifier in the input acpidump text
* file is valid (of the form: <sig> @ <addr>).
*
******************************************************************************/
BOOLEAN
AxIsDataBlockHeader (
void)
{
/* Ignore lines that are too short to be header lines */
if (strlen (Gbl_LineBuffer) < AX_MIN_BLOCK_HEADER_LENGTH)
{
return (FALSE);
}
/* Ignore empty lines and lines that start with a space */
if (AxIsEmptyLine (Gbl_LineBuffer) ||
(Gbl_LineBuffer[0] == ' '))
{
return (FALSE);
}
/*
* Ignore lines that are not headers of the form <sig> @ <addr>.
* Basically, just look for the '@' symbol, surrounded by spaces.
*
* Examples of headers that must be supported:
*
* DSDT @ 0x737e4000
* XSDT @ 0x737f2fff
* RSD PTR @ 0xf6cd0
* SSDT @ (nil)
*/
if (!AX_IS_TABLE_BLOCK_HEADER)
{
return (FALSE);
}
AxNormalizeSignature (Gbl_LineBuffer);
return (TRUE);
}
/*******************************************************************************
*
* FUNCTION: AxNormalizeSignature
*
* PARAMETERS: Name - Ascii string containing an ACPI signature
*
* RETURN: None
*
* DESCRIPTION: Change "RSD PTR" to "RSDP"
*
******************************************************************************/
void
AxNormalizeSignature (
char *Signature)
{
if (!strncmp (Signature, "RSD ", 4))
{
Signature[3] = 'P';
}
}
/******************************************************************************
*
* FUNCTION: AxConvertToBinary
*
* PARAMETERS: InputLine - One line from the input acpidump file
* OutputData - Where the converted data is returned
*
* RETURN: The number of bytes actually converted
*
* DESCRIPTION: Convert one line of ascii text binary (up to 16 bytes)
*
* NOTE: Assumes the input data line has been validated to be of the form:
*
* 0010: 48 53 57 55 4c 54 2d 52 01 00 00 00 49 4e 54 4c HSWULT-R....INTL
*
******************************************************************************/
int
AxConvertToBinary (
char *InputLine,
unsigned char *OutputData)
{
char *ColonDelimiter;
int BytesConverted;
int Converted[16];
int i;
/*
* Terminate input line immediately after the data. Otherwise, the
* second line below will not scan correctly.
*
* This handles varying lengths for the offset: line prefix. This support
* for tables larger than 1mb was added 05/2018.
*
* 00b0: 03 00 00 00 43 48 41 36 0c 00 00 00 03 00 00 00 ....CHA6........
* 00c0: 43 48 41 37 CHA7
*
* 012340b0: 03 00 00 00 43 48 41 36 0c 00 00 00 03 00 00 00 ....CHA6........
* 012340c0: 43 48 41 37 CHA7
*/
ColonDelimiter = strchr (InputLine, ':');
ColonDelimiter [AX_HEX_DATA_LENGTH] = 0;
/*
* Convert one line of table data, of the form:
* <offset>: <up to 16 bytes of hex data> <ASCII representation> <newline>
*
* Example:
* 02C0: 5F 53 42 5F 4C 4E 4B 44 00 12 13 04 0C FF FF 08 _SB_LNKD........
*/
BytesConverted = sscanf (InputLine,
"%*s %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X %2X",
&Converted[0], &Converted[1], &Converted[2], &Converted[3],
&Converted[4], &Converted[5], &Converted[6], &Converted[7],
&Converted[8], &Converted[9], &Converted[10], &Converted[11],
&Converted[12], &Converted[13], &Converted[14], &Converted[15]);
if (BytesConverted == EOF)
{
printf ("EOF while converting ASCII line to binary\n");
return (-1);
}
/*
* Pack converted data into a byte array.
* Note: BytesConverted == 0 is acceptable.
*/
for (i = 0; i < BytesConverted; i++)
{
OutputData[i] = (unsigned char) Converted[i];
}
return (BytesConverted);
}
/******************************************************************************
*
* FUNCTION: AxCountTableInstances
*
* PARAMETERS: InputPathname - Filename for acpidump file
* Signature - Requested signature to count
*
* RETURN: The number of instances of the signature
*
* DESCRIPTION: Count the instances of tables with the given signature within
* the input acpidump file.
*
******************************************************************************/
unsigned int
AxCountTableInstances (
char *InputPathname,
char *Signature)
{
FILE *InputFile;
unsigned int Instances = 0;
InputFile = fopen (InputPathname, "r");
if (!InputFile)
{
printf ("Could not open input file %s\n", InputPathname);
return (0);
}
/* Count the number of instances of this signature */
while (fgets (Gbl_InstanceBuffer, AX_LINE_BUFFER_SIZE, InputFile))
{
/* Ignore empty lines and lines that start with a space */
if (AxIsEmptyLine (Gbl_InstanceBuffer) ||
(Gbl_InstanceBuffer[0] == ' '))
{
continue;
}
AxNormalizeSignature (Gbl_InstanceBuffer);
if (ACPI_COMPARE_NAMESEG (Gbl_InstanceBuffer, Signature))
{
Instances++;
}
}
fclose (InputFile);
return (Instances);
}
/******************************************************************************
*
* FUNCTION: AxGetNextInstance
*
* PARAMETERS: InputPathname - Filename for acpidump file
* Signature - Requested ACPI signature
*
* RETURN: The next instance number for this signature. Zero if this
* is the first instance of this signature.
*
* DESCRIPTION: Get the next instance number of the specified table. If this
* is the first instance of the table, create a new instance
* block. Note: only SSDT and PSDT tables can have multiple
* instances.
*
******************************************************************************/
unsigned int
AxGetNextInstance (
char *InputPathname,
char *Signature)
{
AX_TABLE_INFO *Info;
Info = Gbl_TableListHead;
while (Info)
{
if (*(UINT32 *) Signature == Info->Signature)
{
break;
}
Info = Info->Next;
}
if (!Info)
{
/* Signature not found, create new table info block */
Info = malloc (sizeof (AX_TABLE_INFO));
if (!Info)
{
printf ("Could not allocate memory (0x%X bytes)\n",
(unsigned int) sizeof (AX_TABLE_INFO));
exit (0);
}
Info->Signature = *(UINT32 *) Signature;
Info->Instances = AxCountTableInstances (InputPathname, Signature);
Info->NextInstance = 1;
Info->Next = Gbl_TableListHead;
Gbl_TableListHead = Info;
}
if (Info->Instances > 1)
{
return (Info->NextInstance++);
}
return (0);
}
/******************************************************************************
*
* FUNCTION: AxConvertAndWrite
*
* PARAMETERS: OutputFile - Where to write the binary data
* ThisSignature - Signature of current ACPI table
*
* RETURN: Length of the converted line
*
* DESCRIPTION: Convert one line of input hex ascii text to binary, and write
* the binary data to the table output file.
*
* NOTE: Assumes the input data line has been validated to be of the form:
*
* 0010: 48 53 57 55 4c 54 2d 52 01 00 00 00 49 4e 54 4c HSWULT-R....INTL
*
******************************************************************************/
int
AxConvertAndWrite (
FILE *OutputFile,
char *ThisSignature)
{
int BytesWritten;
int BytesConverted;
/* Convert one line of ascii hex data to binary */
BytesConverted = AxConvertToBinary (Gbl_LineBuffer, Gbl_BinaryData);
if (BytesConverted == EOF)
{
return (EOF);
}
if (!BytesConverted)
{
return (0);
}
/* Write the binary data */
BytesWritten = fwrite (Gbl_BinaryData, 1, BytesConverted, OutputFile);
if (BytesWritten != BytesConverted)
{
printf ("Error while writing file %s\n", Gbl_OutputFilename);
return (-1);
}
return (BytesWritten);
}
/******************************************************************************
*
* FUNCTION: AxDumpTableHeader
*
* PARAMETERS: Header - A binary ACPI table header
*
* RETURN: None
*
* DESCRIPTION: Display the contents of a standard ACPI table header
*
******************************************************************************/
void
AxDumpTableHeader (
unsigned char *Header)
{
ACPI_TABLE_HEADER *TableHeader = (ACPI_TABLE_HEADER *) (void *) Header;
ACPI_TABLE_RSDP *Rsdp = (ACPI_TABLE_RSDP *) (void *) Header;
ACPI_TABLE_FACS *Facs = (ACPI_TABLE_FACS *) (void *) Header;
/* RSDP has an oddball signature and header */
if (!strncmp (TableHeader->Signature, "RSD PTR ", 8))
{
AxCheckAscii ((char *) &Header[9], 6);
Gbl_TableCount++;
printf (" %.2u) %5.4s 0x%8.8X 0x%2.2X \"%6.6s\"\n",
Gbl_TableCount, "RSDP", Rsdp->Length, Rsdp->Revision, Rsdp->OemId);
return;
}
if (!AcpiUtValidNameseg (TableHeader->Signature))
{
return;
}
/* Signature and Table length */
Gbl_TableCount++;
printf (" %.2u) %5.4s 0x%8.8X", Gbl_TableCount, TableHeader->Signature,
TableHeader->Length);
/* FACS has only signature and length */
if (ACPI_COMPARE_NAMESEG (TableHeader->Signature, "FACS"))
{
printf (" 0x%2.2X\n", Facs->Version);
return;
}
/* OEM IDs and Compiler IDs */
AxCheckAscii (TableHeader->OemId, 6);
AxCheckAscii (TableHeader->OemTableId, 8);
AxCheckAscii (TableHeader->AslCompilerId, 4);
printf (
" 0x%2.2X \"%6.6s\" \"%8.8s\" 0x%8.8X"
" \"%4.4s\" 0x%8.8X\n",
TableHeader->Revision, TableHeader->OemId,
TableHeader->OemTableId, TableHeader->OemRevision,
TableHeader->AslCompilerId, TableHeader->AslCompilerRevision);
}
#ifdef _AX_FUTURE_ENHANCEMENTS
/* Possible enhancement to validate table lengths */
void
AxCheckTableLengths (
UINT32 ByteCount,
UINT32 AmlByteCount)
{
if (AmlByteCount == 0)
{
return;
}
if (ByteCount == 0)
{
return;
}
if ((ByteCount < sizeof (ACPI_TABLE_HEADER)) &&
(ByteCount >= ACPI_NAMESEG_SIZE))
{
printf (" : (Table too short for an ACPI table)");
}
else if (ByteCount != AmlByteCount)
{
printf (" : (Hex data length mismatch with AML length 0x%X)",
AmlByteCount);
}
printf ("\n");
}
#endif