paging/32bit/X86VMTranslationMap32Bit.cpp

125 X86VMTranslationMap32Bit::MaxPagesNeededToMap(addr_t start, addr_t end) const
127 	// If start == 0, the actual base address is not yet known to the caller and
129 	if (start == 0) {
131 		start = 1023 * B_PAGE_SIZE;
135 	return VADDR_TO_PDENT(end) + 1 - VADDR_TO_PDENT(start);
213 X86VMTranslationMap32Bit::Unmap(addr_t start, addr_t end)
215 	start = ROUNDDOWN(start, B_PAGE_SIZE);
216 	if (start >= end)
219 	TRACE("unmap_tmap: asked to free pages 0x%lx to 0x%lx\n", start, end);
224 		int index = VADDR_TO_PDENT(start);
226 			// no page table here, move the start up to access the next page
228 			start = ROUNDUP(start + 1, kPageTableAlignment);
238 		for (index = VADDR_TO_PTENT(start); (index < 1024) && (start < end);
239 				index++, start += B_PAGE_SIZE) {
245 			TRACE("unmap_tmap: removing page 0x%lx\n", start);
256 				InvalidatePage(start);
259 	} while (start != 0 && start < end);
266 X86VMTranslationMap32Bit::DebugMarkRangePresent(addr_t start, addr_t end,
269 	start = ROUNDDOWN(start, B_PAGE_SIZE);
270 	if (start >= end)
276 		int index = VADDR_TO_PDENT(start);
278 			// no page table here, move the start up to access the next page
280 			start = ROUNDUP(start + 1, kPageTableAlignment);
290 		for (index = VADDR_TO_PTENT(start); (index < 1024) && (start < end);
291 				index++, start += B_PAGE_SIZE) {
310 					InvalidatePage(start);
314 	} while (start != 0 && start < end);
394 	addr_t start = base;
398 		B_PRIxADDR ")\n", area, start, end);
407 		int index = VADDR_TO_PDENT(start);
409 			// no page table here, move the start up to access the next page
411 			start = ROUNDUP(start + 1, kPageTableAlignment);
421 		for (index = VADDR_TO_PTENT(start); (index < 1024) && (start < end);
422 				index++, start += B_PAGE_SIZE) {
434 				InvalidatePage(start);
489 	} while (start != 0 && start < end);
692 X86VMTranslationMap32Bit::Protect(addr_t start, addr_t end, uint32 attributes,
695 	start = ROUNDDOWN(start, B_PAGE_SIZE);
696 	if (start >= end)
699 	TRACE("protect_tmap: pages 0x%lx to 0x%lx, attributes %lx\n", start, end,
714 		int index = VADDR_TO_PDENT(start);
716 			// no page table here, move the start up to access the next page
718 			start = ROUNDUP(start + 1, kPageTableAlignment);
728 		for (index = VADDR_TO_PTENT(start); index < 1024 && start < end;
729 				index++, start += B_PAGE_SIZE) {
736 			TRACE("protect_tmap: protect page 0x%lx\n", start);
759 				InvalidatePage(start);
762 	} while (start != 0 && start < end);