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[debug] Remove unused guard_region() and check_region() functions 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/1/head
Michael Brown 2010-07-14 11:44:58 +01:00
parent e08cf49f1d
commit 9f3c0c1f39
1 changed files with 0 additions and 53 deletions
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53
src/core/debug.c
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@ -69,59 +69,6 @@ void dbg_hex_dump_da ( unsigned long dispaddr, const void *data,
} }
} }
#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 %#x ", offset );
} else if ( ( in_corruption != 0 ) &&
( test == GUARD_SYMBOL ) ) {
/* End of corruption */
in_corruption = 0;
printf ( "to offset %#x", offset );
}
}
if ( in_corruption != 0 ) {
printf ( "to offset %#zx (end of region)\n", len-1 );
}
return corrupted;
}
/** /**
* Maximum number of separately coloured message streams * Maximum number of separately coloured message streams
* *