file details and debug support

This patch contains the file details part and linkmap support. In order to
save space, the linkmap part and file details part are merged into one
implementation. Both use the same pointer, obj->detail.

Signed-off-by: Peng Fan <van.freenix@gmail.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/rtl-debugger.c b/rtl-debugger.c
index a240bfb..531b268 100644
--- a/rtl-debugger.c
+++ b/rtl-debugger.c
@@ -28,6 +28,8 @@
 
 #include <link.h>
 #include <rtl.h>
+#include <rtl-trace.h>
+#include "rtl-obj-fwd.h"
 
 struct r_debug  _rtld_debug;
 
@@ -38,3 +40,54 @@ _rtld_debug_state (void)
    * Empty. GDB only needs to hit this location.
    */
 }
+
+int
+_rtld_linkmap_add (rtems_rtl_obj_t* obj)
+{
+  struct link_map* l = (struct link_map*)obj->detail;
+  struct link_map* prev;
+  uint32_t obj_num = obj->obj_num;
+  int i;
+
+  if (rtems_rtl_trace (RTEMS_RTL_TRACE_DETAIL))
+    printf ("rtl: linkmap_add\n");
+
+  for (i = 0; i < obj_num; ++i)
+  {
+    l[i].sec_addr[rap_text] = obj->text_base;
+    l[i].sec_addr[rap_const] = obj->const_base;
+    l[i].sec_addr[rap_data] = obj->data_base;
+    l[i].sec_addr[rap_bss] = obj->bss_base;
+  }
+
+  if (_rtld_debug.r_map == NULL)
+  {
+    _rtld_debug.r_map = l;
+    return;
+  }
+
+  for (prev = _rtld_debug.r_map; prev->l_next != NULL; prev = prev->l_next);
+
+  l->l_prev = prev;
+  prev->l_next = l;
+}
+
+void
+_rtld_linkmap_delete (rtems_rtl_obj_t* obj)
+{
+  struct link_map* l = (struct link_map*)obj->detail;
+  /* link_maps are allocated together if not 1 */
+  struct link_map* e = l + obj->obj_num - 1;
+
+  while (e && e->l_next) e = e->l_next;
+
+  if (l->l_prev == NULL)
+  {
+    if ((_rtld_debug.r_map = e->l_next) != NULL)
+      e->l_next->l_prev = NULL;
+    return;
+  }
+  if ((l->l_prev->l_next = e->l_next) != NULL)
+    e->l_next->l_prev = l->l_prev;
+  return;
+}