void
AbDisplayHeader (
char *FilePath)
{
UINT32 Actual;
FILE *File;
File = fopen (FilePath, "rb");
if (!File)
{
printf ("Could not open file %s\n", FilePath);
return;
}
Actual = fread (&Header1, 1, sizeof (ACPI_TABLE_HEADER), File);
fclose (File);
if (Actual != sizeof (ACPI_TABLE_HEADER))
{
printf ("File %s does not contain a valid ACPI table header\n", FilePath);
return;
}
if (!AbValidateHeader (&Header1))
{
return;
}
AbPrintHeaderInfo (&Header1);
}
void
AbComputeChecksum (
char *FilePath)
{
UINT32 Actual;
ACPI_TABLE_HEADER *Table;
UINT8 Checksum;
FILE *File;
File = fopen (FilePath, "rb");
if (!File)
{
printf ("Could not open file %s\n", FilePath);
return;
}
Actual = fread (&Header1, 1, sizeof (ACPI_TABLE_HEADER), File);
if (Actual < sizeof (ACPI_TABLE_HEADER))
{
printf ("File %s does not contain a valid ACPI table header\n", FilePath);
goto Exit1;
}
if (!AbValidateHeader (&Header1))
{
goto Exit1;
}
if (!Gbl_TerseMode)
{
AbPrintHeaderInfo (&Header1);
}
/* Allocate a buffer to hold the entire table */
Table = AcpiOsAllocate (Header1.Length);
if (!Table)
{
printf ("Could not allocate buffer for table\n");
goto Exit1;
}
/* Read the entire table, including header */
fseek (File, 0, SEEK_SET);
Actual = fread (Table, 1, Header1.Length, File);
if (Actual != Header1.Length)
{
printf ("Could not read table, length %u\n", Header1.Length);
goto Exit2;
}
/* Compute the checksum for the table */
Table->Checksum = 0;
Checksum = (UINT8) (0 - AcpiTbSumTable (Table, Table->Length));
printf ("Computed checksum: 0x%X\n\n", Checksum);
if (Header1.Checksum == Checksum)
{
printf ("Checksum OK in AML file, not updating\n");
goto Exit2;
}
/* Open the target file for writing, to update checksum */
fclose (File);
File = fopen (FilePath, "r+b");
if (!File)
{
printf ("Could not open file %s for writing\n", FilePath);
goto Exit2;
}
/* Set the checksum, write the new header */
Header1.Checksum = Checksum;
Actual = fwrite (&Header1, 1, sizeof (ACPI_TABLE_HEADER), File);
if (Actual != sizeof (ACPI_TABLE_HEADER))
{
printf ("Could not write updated table header\n");
goto Exit2;
}
printf ("Wrote new checksum\n");
Exit2:
AcpiOsFree (Table);
Exit1:
if (File)
{
fclose (File);
}
return;
}
int
AbCompareAmlFiles (
char *File1Path,
char *File2Path)
{
UINT32 Actual1;
UINT32 Actual2;
UINT32 Offset;
UINT8 Char1;
UINT8 Char2;
UINT8 Mismatches = 0;
BOOLEAN HeaderMismatch = FALSE;
File1 = fopen (File1Path, "rb");
if (!File1)
{
printf ("Could not open file %s\n", File1Path);
return -1;
}
File2 = fopen (File2Path, "rb");
if (!File2)
{
printf ("Could not open file %s\n", File2Path);
return -1;
}
/* Read the ACPI header from each file */
Actual1 = fread (&Header1, 1, sizeof (ACPI_TABLE_HEADER), File1);
if (Actual1 < sizeof (ACPI_TABLE_HEADER))
{
printf ("File %s does not contain an ACPI table header\n", File1Path);
return -1;
}
Actual2 = fread (&Header2, 1, sizeof (ACPI_TABLE_HEADER), File2);
if (Actual2 < sizeof (ACPI_TABLE_HEADER))
{
printf ("File %s does not contain an ACPI table header\n", File2Path);
return -1;
}
if ((!AbValidateHeader (&Header1)) ||
(!AbValidateHeader (&Header2)))
{
return -1;
}
/* Table signatures must match */
if (*((UINT32 *) Header1.Signature) != *((UINT32 *) Header2.Signature))
{
printf ("Table signatures do not match\n");
return -1;
}
if (!Gbl_TerseMode)
{
/* Display header information */
AbPrintHeaderInfo (&Header1);
AbPrintHeaderInfo (&Header2);
}
if (memcmp (Header1.Signature, Header2.Signature, sizeof (ACPI_TABLE_HEADER)))
{
printf ("Headers do not match exactly\n");
HeaderMismatch = TRUE;
}
/* Do the byte-by-byte compare */
Actual1 = fread (&Char1, 1, 1, File1);
Actual2 = fread (&Char2, 1, 1, File2);
Offset = sizeof (ACPI_TABLE_HEADER);
while (Actual1 && Actual2)
{
if (Char1 != Char2)
{
printf ("Error - Byte mismatch at offset %8.8X: 0x%2.2X 0x%2.2X\n",
Offset, Char1, Char2);
Mismatches++;
if (Mismatches > 100)
{
printf ("100 Mismatches: Too many mismatches\n");
return -1;
}
}
Offset++;
Actual1 = fread (&Char1, 1, 1, File1);
Actual2 = fread (&Char2, 1, 1, File2);
}
if (Actual1)
{
printf ("Error - file %s is longer than file %s\n", File1Path, File2Path);
Mismatches++;
}
else if (Actual2)
{
printf ("Error - file %s is shorter than file %s\n", File1Path, File2Path);
Mismatches++;
}
else if (!Mismatches)
{
if (HeaderMismatch)
{
printf ("Files compare exactly after header\n");
}
else
{
printf ("Files compare exactly\n");
}
}
printf ("%u Mismatches found\n", Mismatches);
return 0;
}
