making elf loader zero bss sections

1 files changed, 28 insertions, 0 deletions

diff --git a/src/user/knob/heap.c b/src/user/knob/heap.c
index ec21129..49f9339 100644
--- a/src/user/knob/heap.c
+++ b/src/user/knob/heap.c
@@ -24,9 +24,23 @@ static void add_header(struct block_header *bh) {
 
 __attribute__ ((malloc))
 void *get_block(uint32_t bytes) {
+//char nbuf[11];
+//tell_user_sz("[heap::get_block]\n  first_block = 0x");
+//itosz_h32((uint32_t)first_block, nbuf);
+//tell_user_sz(nbuf);
+//tell_user_sz("\n");
   struct block_header *header = 0;
 
   for (struct block_header *ptr = first_block; ptr; ptr = ptr->next) {
+  //tell_user_sz("  ptr = 0x");
+  //itosz_h32((uint32_t)ptr, nbuf);
+  //tell_user_sz(nbuf);
+  //tell_user_sz("\n  &ptr->allocated = 0x");
+  //itosz_h32((uint32_t)&ptr->allocated, nbuf);
+  //tell_user_sz(nbuf);
+  //tell_user_sz("\n  ptr->allocated = ");
+  //tell_user_sz(ptr->allocated ? "true\n" : "false\n");
+
     if (ptr->allocated)
       continue;
     if (ptr->length == bytes) {
@@ -49,7 +63,14 @@ void *get_block(uint32_t bytes) {
   if (!header) {
     uint32_t size_with_header = bytes + sizeof(struct block_header);
     if (!(size_with_header % 4096)) {
+    //tell_user_sz("  allocate ");
+    //itosz(size_with_header / 4096, nbuf);
+    //tell_user_sz(nbuf);
+    //tell_user_sz(" pages = 0x");
       header = _allocate_ram(size_with_header / 4096);
+    //itosz_h32((uint32_t)header, nbuf);
+    //tell_user_sz(nbuf);
+    //tell_user_sz("\n");
       if (!header)
         return 0;
       header->length = bytes;
@@ -57,7 +78,14 @@ void *get_block(uint32_t bytes) {
     }
     else {
       uint32_t pages = (bytes + sizeof(struct block_header) * 2) / 4096 + 1;
+    //tell_user_sz("  allocate ");
+    //itosz(pages, nbuf);
+    //tell_user_sz(nbuf);
+    //tell_user_sz(" pages = 0x");
       header = _allocate_ram(pages);
+    //itosz_h32((uint32_t)header, nbuf);
+    //tell_user_sz(nbuf);
+    //tell_user_sz("\n");
       if (!header)
         return 0;
       header->length = bytes;