Run first app from ramdisk!

kernel/libk/bm.c

@@ -45,16 +45,16 @@ bool bm_test (struct bm* bm, size_t k) {
  * Set a range of bits in a bitmap. if starting bit is out of range, we fail.
  */
 bool bm_set_region (struct bm* bm, size_t k, size_t m) {
-  if ((k >= m) || (k >= bm->nbits) || (k + m >= bm->nbits))
+  if (((k + m) > bm->nbits) || (k + m) < k)
     return false;
 
-  for (size_t i = k; i < m; i++) {
+  for (size_t i = k; i < (k + m); i++) {
     bool taken = bm_test (bm, i);
     if (taken)
       return false;
   }
 
-  for (size_t i = k; i < m; i++)
+  for (size_t i = k; i < (k + m); i++)
     bm_set (bm, i);
 
   return true;
@@ -64,10 +64,10 @@ bool bm_set_region (struct bm* bm, size_t k, size_t m) {
  * Clear a range of bits in a bitmap. starting bit must be in range.
  */
 void bm_clear_region (struct bm* bm, size_t k, size_t m) {
-  if ((k >= m) || (k >= bm->nbits) || (k + m >= bm->nbits))
+  if (((k + m) > bm->nbits) || (k + m) < k)
     return;
 
-  for (size_t i = k; i < m; i++)
+  for (size_t i = k; i < (k + m); i++)
     bm_clear (bm, i);
 }
 
@@ -78,10 +78,10 @@ void bm_clear_region (struct bm* bm, size_t k, size_t m) {
  * useful for implementing the physical memory manager algorithm.
  */
 bool bm_test_region (struct bm* bm, size_t k, size_t m) {
-  if ((k >= m) || (k >= bm->nbits) || (k + m >= bm->nbits))
+  if (((k + m) > bm->nbits) || (k + m) < k)
     return true;
 
-  for (size_t i = k; i < m; i++) {
+  for (size_t i = k; i < (k + m); i++) {
     bool test = bm_test (bm, i);
     if (test)
       return true;