C++ (Cpp) randomize_range Examples

Example #1

File: sys_x86_64.c Project: DirtyDroidX/android_kernel_htc_m8ul

static void find_start_end(unsigned long flags, unsigned long *begin,
			   unsigned long *end)
{
	if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) {
		unsigned long new_begin;
		*begin = 0x40000000;
		*end = 0x80000000;
		if (current->flags & PF_RANDOMIZE) {
			new_begin = randomize_range(*begin, *begin + 0x02000000, 0);
			if (new_begin)
				*begin = new_begin;
		}
	} else {
		*begin = TASK_UNMAPPED_BASE;
		*end = TASK_SIZE;
	}
}

Example #2

File: sys_x86_64.c Project: cHunter791/pmfs

static void find_start_end(unsigned long flags, unsigned long *begin,
			   unsigned long *end)
{
	if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) {
		unsigned long new_begin;
		/* This is usually used needed to map code in small
		   model, so it needs to be in the first 31bit. Limit
		   it to that.  This means we need to move the
		   unmapped base down for this case. This can give
		   conflicts with the heap, but we assume that glibc
		   malloc knows how to fall back to mmap. Give it 1GB
		   of playground for now. -AK */
		*begin = 0x40000000;
		*end = 0x80000000;
		if (current->flags & PF_RANDOMIZE) {
			new_begin = randomize_range(*begin, *begin + 0x02000000, 0);
			if (new_begin)
				*begin = new_begin;
		}
	} else {
		*begin = TASK_UNMAPPED_BASE;
		*end = TASK_SIZE;
	}
}