dtfield.c revision 199767f8919635c4928607450d9e0abb932109ce
/******************************************************************************
*
* Module Name: dtfield.c - Code generation for individual source fields
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2015, 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.
*/
#define _COMPONENT DT_COMPILER
ACPI_MODULE_NAME ("dtfield")
/* Local prototypes */
static void
static void
static ACPI_STATUS
static char *
char *Buffer,
/******************************************************************************
*
* FUNCTION: DtCompileOneField
*
* PARAMETERS: Buffer - Output buffer
* Field - Field to be compiled
* ByteLength - Byte length of the field
* Type - Field type
*
* RETURN: None
*
* DESCRIPTION: Compile a field value to binary
*
*****************************************************************************/
void
{
switch (Type)
{
case DT_FIELD_TYPE_INTEGER:
break;
case DT_FIELD_TYPE_STRING:
break;
case DT_FIELD_TYPE_UUID:
if (ACPI_SUCCESS (Status))
{
break;
}
/* Fall through. */
case DT_FIELD_TYPE_BUFFER:
break;
case DT_FIELD_TYPE_UNICODE:
break;
break;
default:
break;
}
}
/******************************************************************************
*
* FUNCTION: DtCompileString
*
* PARAMETERS: Buffer - Output buffer
* Field - String to be copied to buffer
* ByteLength - Maximum length of string
*
* RETURN: None
*
* DESCRIPTION: Copy string to the buffer
*
*****************************************************************************/
static void
{
/* Check if the string is too long for the field */
if (Length > ByteLength)
{
Length = ByteLength;
}
}
/******************************************************************************
*
* FUNCTION: DtCompileUnicode
*
* PARAMETERS: Buffer - Output buffer
* Field - String to be copied to buffer
* ByteLength - Maximum length of string
*
* RETURN: None
*
* DESCRIPTION: Convert ASCII string to Unicode string
*
* Note: The Unicode string is 16 bits per character, no leading signature,
* with a 16-bit terminating NULL.
*
*****************************************************************************/
static void
{
UINT32 i;
char *AsciiString;
/* Convert to Unicode string (including null terminator) */
for (i = 0; i < Count; i++)
{
}
}
/*******************************************************************************
*
* FUNCTION: DtCompileUuid
*
* PARAMETERS: Buffer - Output buffer
* Field - String to be copied to buffer
* ByteLength - Maximum length of string
*
* RETURN: None
*
* DESCRIPTION: Convert UUID string to 16-byte buffer
*
******************************************************************************/
static ACPI_STATUS
{
char *InString;
if (ACPI_FAILURE (Status))
{
}
else
{
}
return (Status);
}
/******************************************************************************
*
* FUNCTION: DtCompileInteger
*
* PARAMETERS: Buffer - Output buffer
* Field - Field obj with Integer to be compiled
* ByteLength - Byte length of the integer
* Flags - Additional compile info
*
* RETURN: None
*
* DESCRIPTION: Compile an integer. Supports integer expressions with C-style
* operators.
*
*****************************************************************************/
void
{
/* Output buffer byte length must be in range 1-8 */
{
"Invalid internal Byte length");
return;
}
/* Resolve integer expression to a single integer value */
if (ACPI_FAILURE (Status))
{
return;
}
/*
* Ensure that reserved fields are set properly. Note: uses
* the DT_NON_ZERO flag to indicate that the reserved value
* must be exactly one. Otherwise, the value must be zero.
* This is sufficient for now.
*/
/* TBD: Should use a flag rather than compare "Reserved" */
{
if (Flags & DT_NON_ZERO)
{
if (Value != 1)
{
"Must be one, setting to one");
Value = 1;
}
}
else if (Value != 0)
{
"Must be zero, setting to zero");
Value = 0;
}
}
/* Check if the value must be non-zero */
{
}
/*
* Generate the maximum value for the data type (ByteLength)
* Note: construct chosen for maximum portability
*/
/* Validate that the input value is within range of the target */
{
}
return;
}
/******************************************************************************
*
* FUNCTION: DtNormalizeBuffer
*
* PARAMETERS: Buffer - Input buffer
* Count - Output the count of hex number in
* the Buffer
*
* RETURN: The normalized buffer, freed by caller
*
* DESCRIPTION: [1A,2B,3C,4D] or 1A, 2B, 3C, 4D will be normalized
* to 1A 2B 3C 4D
*
*****************************************************************************/
static char *
char *Buffer,
{
char *NewBuffer;
char *TmpBuffer;
UINT32 BufferCount = 0;
char c;
while ((c = *Buffer++))
{
switch (c)
{
/* Valid separators */
case '[':
case ']':
case ' ':
case ',':
break;
default:
if (Separator)
{
/* Insert blank as the standard separator */
if (NewBuffer[0])
{
*TmpBuffer++ = ' ';
BufferCount++;
}
}
*TmpBuffer++ = c;
break;
}
}
return (NewBuffer);
}
/******************************************************************************
*
* FUNCTION: DtCompileBuffer
*
* PARAMETERS: Buffer - Output buffer
* StringValue - Integer list to be compiled
* Field - Current field object
* ByteLength - Byte length of the integer list
*
* RETURN: Count of remaining data in the input list
*
* DESCRIPTION: Compile and pack an integer list, for example
* "AA 1F 20 3B" ==> Buffer[] = {0xAA,0x1F,0x20,0x3B}
*
*****************************************************************************/
char *StringValue,
{
char Hex[3];
UINT32 i;
/* Allow several different types of value separators */
Hex[2] = 0;
for (i = 0; i < Count; i++)
{
/* Each element of StringValue is three chars */
/* Convert one hex byte */
Value = 0;
if (ACPI_FAILURE (Status))
{
goto Exit;
}
}
Exit:
return (ByteLength - Count);
}
/******************************************************************************
*
* FUNCTION: DtCompileFlag
*
* PARAMETERS: Buffer - Output buffer
* Field - Field to be compiled
* Info - Flag info
*
* RETURN:
*
* DESCRIPTION: Compile a flag
*
*****************************************************************************/
void
{
UINT8 BitPosition = 0;
if (ACPI_FAILURE (Status))
{
}
{
case ACPI_DMT_FLAG0:
case ACPI_DMT_FLAG1:
case ACPI_DMT_FLAG2:
case ACPI_DMT_FLAG3:
case ACPI_DMT_FLAG4:
case ACPI_DMT_FLAG5:
case ACPI_DMT_FLAG6:
case ACPI_DMT_FLAG7:
BitLength = 1;
break;
case ACPI_DMT_FLAGS0:
BitPosition = 0;
BitLength = 2;
break;
case ACPI_DMT_FLAGS1:
BitPosition = 1;
BitLength = 2;
break;
case ACPI_DMT_FLAGS2:
BitPosition = 2;
BitLength = 2;
break;
case ACPI_DMT_FLAGS4:
BitPosition = 4;
BitLength = 2;
break;
default:
break;
}
/* Check range of the input flag value */
{
Value = 0;
}
}