paging/32bit/ARMVMTranslationMap32Bit.cpp

142 ARMVMTranslationMap32Bit::MaxPagesNeededToMap(addr_t start, addr_t end) const
144 	// If start == 0, the actual base address is not yet known to the caller and
146 	if (start == 0) {
148 		start = 1023 * B_PAGE_SIZE;
152 	return VADDR_TO_PDENT(end) + 1 - VADDR_TO_PDENT(start);
228 ARMVMTranslationMap32Bit::Unmap(addr_t start, addr_t end)
230 	start = ROUNDDOWN(start, B_PAGE_SIZE);
231 	if (start >= end)
234 	TRACE("unmap_tmap: asked to free pages 0x%lx to 0x%lx\n", start, end);
239 		int index = VADDR_TO_PDENT(start);
241 			// no page table here, move the start up to access the next page
243 			start = ROUNDUP(start + 1, kPageTableAlignment);
253 		for (index = VADDR_TO_PTENT(start); (index < 256) && (start < end);
254 				index++, start += B_PAGE_SIZE) {
260 			TRACE("unmap_tmap: removing page 0x%lx\n", start);
271 				InvalidatePage(start);
274 	} while (start != 0 && start < end);
281 ARMVMTranslationMap32Bit::DebugMarkRangePresent(addr_t start, addr_t end,
285 	start = ROUNDDOWN(start, B_PAGE_SIZE);
286 	if (start >= end)
292 		int index = VADDR_TO_PDENT(start);
294 			// no page table here, move the start up to access the next page
296 			start = ROUNDUP(start + 1, kPageTableAlignment);
306 		for (index = VADDR_TO_PTENT(start); (index < 1024) && (start < end);
307 				index++, start += B_PAGE_SIZE) {
326 					InvalidatePage(start);
330 	} while (start != 0 && start < end);
411 	addr_t start = base;
415 		B_PRIxADDR ")\n", area, start, end);
424 		int index = VADDR_TO_PDENT(start);
426 			// no page table here, move the start up to access the next page
428 			start = ROUNDUP(start + 1, kPageTableAlignment);
438 		for (index = VADDR_TO_PTENT(start); (index < 256) && (start < end);
439 				index++, start += B_PAGE_SIZE) {
451 				InvalidatePage(start);
506 	} while (start != 0 && start < end);
695 ARMVMTranslationMap32Bit::Protect(addr_t start, addr_t end, uint32 attributes,
698 	start = ROUNDDOWN(start, B_PAGE_SIZE);
699 	if (start >= end)
702 	TRACE("protect_tmap: pages 0x%lx to 0x%lx, attributes %lx\n", start, end,
711 		int index = VADDR_TO_PDENT(start);
713 			// no page table here, move the start up to access the next page
715 			start = ROUNDUP(start + 1, kPageTableAlignment);
725 		for (index = VADDR_TO_PTENT(start); index < 256 && start < end;
726 				index++, start += B_PAGE_SIZE) {
733 			TRACE("protect_tmap: protect page 0x%lx\n", start);
754 				InvalidatePage(start);
757 	} while (start != 0 && start < end);