[mc] Remove useless code in MC_unwind_stack_frame

[simgrid.git] / src / mc / mc_checkpoint.c

diff --git a/src/mc/mc_checkpoint.c b/src/mc/mc_checkpoint.c
index eaf8566..49e12af 100644 (file)
--- a/src/mc/mc_checkpoint.c
+++ b/src/mc/mc_checkpoint.c
@@ -277,7 +277,7 @@ static xbt_dynar_t MC_get_local_variables_values(xbt_dynar_t stack_frames){
       } else */
       if(current_variable->locations.size != 0){
         new_var->address = (void*) mc_dwarf_resolve_locations(&current_variable->locations,
-          &(stack_frame->unw_cursor), (void*)stack_frame->frame_base);
+          &(stack_frame->unw_cursor), (void*)stack_frame->frame_base, NULL);
       }
 
       xbt_dynar_push(variables, &new_var);
@@ -302,9 +302,6 @@ static xbt_dynar_t MC_unwind_stack_frames(void *stack_context) {
 
   unw_cursor_t c;
 
-  dw_frame_t test = MC_find_function_by_ip(&MC_unwind_stack_frames);
-  xbt_assert(test);
-
   int ret;
   for(ret = unw_init_local(&c, (unw_context_t *)stack_context); ret >= 0; ret = unw_step(&c)){
     mc_stack_frame_t stack_frame = xbt_new(s_mc_stack_frame_t, 1);
@@ -453,6 +450,31 @@ void MC_restore_snapshot(mc_snapshot_t snapshot){
 
 }
 
+void* mc_translate_address(uintptr_t addr, mc_snapshot_t snapshot) {
+
+  // If not in a process state/clone:
+  if(!snapshot) {
+    return (uintptr_t*) addr;
+  }
+
+  // If it is in a snapshot:
+  for(size_t i=0; i!=NB_REGIONS; ++i) {
+    mc_mem_region_t region = snapshot->regions[i];
+    uintptr_t start = (uintptr_t) region->start_addr;
+    uintptr_t end = start + region->size;
+
+    // The address is in this region:
+    if(addr >= start && addr < end) {
+      uintptr_t offset = addr - start;
+      return (void*) ((uintptr_t)region->data + offset);
+    }
+
+  }
+
+  // It is not in a snapshot:
+  return (void*) addr;
+}
+
 mc_snapshot_t SIMIX_pre_mc_snapshot(smx_simcall_t simcall){
   return MC_take_snapshot(1);
 }