Klib::MemoryMap::MemoryMap(int *fd_, uint32_t dev_addr, uint32_t size_)
{
size = size_;
fd = fd_;
if(dev_addr != 0x0) {
mapped_base = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, *fd,
dev_addr & ~MAP_MASK(size) );
if(mapped_base == (void *) -1) {
fprintf(stderr, "Can't map the memory to user space.\n");
close(*fd);
status = MEMMAP_FAILURE;
return;
}
status = MEMMAP_OPENED;
// Device base address
mapped_dev_base = (intptr_t)mapped_base + (dev_addr & MAP_MASK(size));
} else {
status = MEMMAP_CLOSED;
mapped_base = NULL;
mapped_dev_base = 0;
}
}
/**Function*************************************************************
Synopsis [Sets up the mask.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Map_MappingSetupMask( unsigned uMask[], int nVarsMax )
{
if ( nVarsMax == 6 )
uMask[0] = uMask[1] = MAP_FULL;
else
{
uMask[0] = MAP_MASK(1 << nVarsMax);
uMask[1] = 0;
}
}
/**Function*************************************************************
Synopsis [Expand the truth table]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Map_MappingExpandTruth( unsigned uTruth[2], int nVars )
{
assert( nVars < 7 );
if ( nVars == 6 )
return;
if ( nVars < 5 )
{
uTruth[0] &= MAP_MASK( (1<<nVars) );
uTruth[0] = Map_MappingExpandTruth_rec( uTruth[0], nVars );
}
uTruth[1] = uTruth[0];
}
