mirror of
https://github.com/xcat2/xNBA.git
synced 2024-12-15 15:51:44 +00:00
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
#include <stdint.h>
|
|
#include <io.h>
|
|
#include <console.h>
|
|
|
|
void pause ( void ) {
|
|
printf ( "\nPress a key" );
|
|
getchar();
|
|
printf ( "\r \r" );
|
|
}
|
|
|
|
void more ( void ) {
|
|
printf ( "---more---" );
|
|
getchar();
|
|
printf ( "\r \r" );
|
|
}
|
|
|
|
/* Produce a paged hex dump of the specified data and length */
|
|
void hex_dump ( const unsigned char *data, const unsigned int len ) {
|
|
unsigned int index;
|
|
for ( index = 0; index < len; index++ ) {
|
|
if ( ( index % 16 ) == 0 ) {
|
|
printf ( "\n" );
|
|
}
|
|
if ( ( index % 368 ) == 352 ) {
|
|
more();
|
|
}
|
|
if ( ( index % 16 ) == 0 ) {
|
|
printf ( "%p [%lX] : %X :", data + index,
|
|
virt_to_phys ( data + index ), index );
|
|
}
|
|
printf ( " %02X", data[index] );
|
|
}
|
|
printf ( "\n" );
|
|
}
|
|
|
|
#define GUARD_SYMBOL ( ( 'M' << 24 ) | ( 'I' << 16 ) | ( 'N' << 8 ) | 'E' )
|
|
/* Fill a region with guard markers. We use a 4-byte pattern to make
|
|
* it less likely that check_region will find spurious 1-byte regions
|
|
* of non-corruption.
|
|
*/
|
|
void guard_region ( void *region, size_t len ) {
|
|
uint32_t offset = 0;
|
|
|
|
len &= ~0x03;
|
|
for ( offset = 0; offset < len ; offset += 4 ) {
|
|
*((uint32_t *)(region + offset)) = GUARD_SYMBOL;
|
|
}
|
|
}
|
|
|
|
/* Check a region that has been guarded with guard_region() for
|
|
* corruption.
|
|
*/
|
|
int check_region ( void *region, size_t len ) {
|
|
uint8_t corrupted = 0;
|
|
uint8_t in_corruption = 0;
|
|
uint32_t offset = 0;
|
|
uint32_t test = 0;
|
|
|
|
len &= ~0x03;
|
|
for ( offset = 0; offset < len ; offset += 4 ) {
|
|
test = *((uint32_t *)(region + offset)) = GUARD_SYMBOL;
|
|
if ( ( in_corruption == 0 ) &&
|
|
( test != GUARD_SYMBOL ) ) {
|
|
/* Start of corruption */
|
|
if ( corrupted == 0 ) {
|
|
corrupted = 1;
|
|
printf ( "Region %p-%p (physical %#lx-%#lx) "
|
|
"corrupted\n",
|
|
region, region + len,
|
|
virt_to_phys ( region ),
|
|
virt_to_phys ( region + len ) );
|
|
}
|
|
in_corruption = 1;
|
|
printf ( "--- offset %#lx ", offset );
|
|
} else if ( ( in_corruption != 0 ) &&
|
|
( test == GUARD_SYMBOL ) ) {
|
|
/* End of corruption */
|
|
in_corruption = 0;
|
|
printf ( "to offset %#lx", offset );
|
|
}
|
|
|
|
}
|
|
if ( in_corruption != 0 ) {
|
|
printf ( "to offset %#x (end of region)\n", len-1 );
|
|
}
|
|
return corrupted;
|
|
}
|