lib/libi386/t_user_ldt.c

48 static uint8_t *ldt_base;
64 	ldt_base = (uint8_t *)mmap(NULL, 2 * PAGE_SIZE, PROT_READ | PROT_WRITE,
66 	if (ldt_base == MAP_FAILED)
68 	munmap(ldt_base + PAGE_SIZE, PAGE_SIZE);
152 		build_desc(&desc, ldt_base, PAGE_SIZE, SDT_MEMRW,
159 	build_desc(&desc, ldt_base, PAGE_SIZE, SDT_MEMRW, SEL_KPL, 1, 0);
164 	build_desc(&desc, ldt_base, PAGE_SIZE, SDT_MEMRW, SEL_UPL, 1, 0);
171 		build_desc(&desc, ldt_base, PAGE_SIZE, forbidden_types[i],
178 	build_desc(&desc, ldt_base, PAGE_SIZE, SDT_MEMRW, SEL_UPL, 1, 0);
320 	build_desc(&desc, ldt_base, PAGE_SIZE, SDT_MEMRW, SEL_UPL, 1, 0);
325 	ldt_base[666] = 123;
326 	ldt_base[PAGE_SIZE-1] = 213;