version 1.1.1.1, 2007/10/16 09:41:04 |
version 1.4, 2007/10/16 13:45:16 |
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/* calculate pointer to this (last) page */ |
/* calculate pointer to this (last) page */ |
lastpageptr = (uint32_t *)((allocbase + (8 * nmbmbytes * KMEM_PAGESIZE)) + (KMEM_PAGESIZE * nmbmbits)); |
lastpageptr = (uint32_t *)((allocbase + (8 * nmbmbytes * KMEM_PAGESIZE)) + (KMEM_PAGESIZE * nmbmbits)); |
DPRINTF("lastpageptr=0x%x\n", lastpageptr); |
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/* rewind pointer to the first byte */ |
/* rewind pointer to the first byte */ |
firstpageptr = lastpageptr - ((npages - 1)); |
firstpageptr = lastpageptr - ((npages - 1)); |
DPRINTF("firstpageptr=0x%x\n", firstpageptr); |
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offbits = mask ? mask - 1 : mask; /* XXX */ |
offbits = nmbmbits; |
/* fill this (npages pages) region with zeroes */ |
/* fill this (npages pages) region with zeroes */ |
while(firstpageptr <= lastpageptr) { |
while(firstpageptr <= lastpageptr) { |
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/* zerofy page */ |
/* zerofy page */ |
for (i = 0; i < KMEM_PAGESIZE; i++) { |
for (i = 0; i < KMEM_PAGESIZE; i++) { |
*(uint8_t *)firstpageptr = 0xaa; |
*(uint8_t *)firstpageptr = KMEM_FILLBYTE; |
((uint8_t *)firstpageptr)++; |
((uint8_t *)firstpageptr)++; |
} |
} |
/* TODO rework offbits calculation */ |
/* TODO rework offbits calculation */ |
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firstpageptr = lastpageptr - ((npages - 1)); |
firstpageptr = lastpageptr - ((npages - 1)); |
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/* got it */ |
/* got it */ |
DPRINTF("allocated, addr=0x%x\n", firstpageptr); |
DPRINTF("allocated, addr=0x%x len=0x%x [0x%x-0x%x]\n", firstpageptr, npages * KMEM_PAGESIZE, firstpageptr, lastpageptr); |
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/* decrement system free pages */ |
/* decrement system free pages */ |
freepages -= npages; |
freepages -= npages; |