X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/eb3ad7bf1f83d355e938a83cf02f78bc898eefbb..5f25255261a9dc908c7ba0133de80f05f993c8c5:/src/mc/mc_private.h

diff --git a/src/mc/mc_private.h b/src/mc/mc_private.h
index 3ffc21772b..63a4b3851a 100644
--- a/src/mc/mc_private.h
+++ b/src/mc/mc_private.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2007-2013. The SimGrid Team.
+/* Copyright (c) 2007-2014. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -29,6 +29,7 @@
 #include "xbt/parmap.h"
 
 typedef struct s_dw_frame s_dw_frame_t, *dw_frame_t;
+typedef struct s_mc_function_index_item s_mc_function_index_item_t, *mc_function_index_item_t;
 
 /****************************** Snapshots ***********************************/
 
@@ -261,7 +262,7 @@ int snapshot_compare(void *state1, void *state2);
 int SIMIX_pre_mc_compare_snapshots(smx_simcall_t simcall, mc_snapshot_t s1, mc_snapshot_t s2);
 void print_comparison_times(void);
 
-#define MC_DEBUG 1
+//#define MC_DEBUG 1
 #define MC_VERBOSE 1
 
 /********************************** DPOR for safety property **************************************/
@@ -332,19 +333,27 @@ void MC_dump_stack_liveness(xbt_fifo_t stack);
 
 /********************************** Variables with DWARF **********************************/
 
+#define MC_OBJECT_INFO_EXECUTABLE 1
+
 struct s_mc_object_info {
+  size_t flags;
   char* file_name;
   char *start_exec, *end_exec; // Executable segment
   char *start_rw, *end_rw; // Read-write segment
   char *start_ro, *end_ro; // read-only segment
-  xbt_dict_t local_variables; // xbt_dict_t<frame_name, dw_frame_t>
+  xbt_dynar_t subprograms; // xbt_dynar_t<dw_frame_t>
   xbt_dynar_t global_variables; // xbt_dynar_t<dw_variable_t>
   xbt_dict_t types; // xbt_dict_t<origin as hexadecimal string, dw_type_t>
   xbt_dict_t types_by_name; // xbt_dict_t<name, dw_type_t> (full defined type only)
+
+  // Here we sort the minimal information for an efficient (and cache-efficient)
+  // lookup of a function given an instruction pointer.
+  // The entries are sorted by low_pc and a binary search can be used to look them up.
+  xbt_dynar_t functions_index;
 };
 
 mc_object_info_t MC_new_object_info(void);
-mc_object_info_t MC_find_object_info(memory_map_t maps, char* name);
+mc_object_info_t MC_find_object_info(memory_map_t maps, char* name, int executable);
 void MC_free_object_info(mc_object_info_t* p);
 
 void MC_dwarf_get_variables(mc_object_info_t info);
@@ -352,9 +361,41 @@ void MC_dwarf_get_variables_libdw(mc_object_info_t info);
 const char* MC_dwarf_attrname(int attr);
 const char* MC_dwarf_tagname(int tag);
 
+dw_frame_t MC_find_function_by_ip(void* ip);
+mc_object_info_t MC_ip_find_object_info(void* ip);
+
 extern mc_object_info_t mc_libsimgrid_info;
 extern mc_object_info_t mc_binary_info;
 
+void MC_find_object_address(memory_map_t maps, mc_object_info_t result);
+void MC_post_process_types(mc_object_info_t info);
+
+// ***** Expressions
+
+/** \brief a DWARF expression with optional validity contraints */
+typedef struct s_mc_expression {
+  size_t size;
+  Dwarf_Op* ops;
+  // Optional validity:
+  void* lowpc, *highpc;
+} s_mc_expression_t, *mc_expression_t;
+
+/** A location list (list of location expressions) */
+typedef struct s_mc_location_list {
+  size_t size;
+  mc_expression_t locations;
+} s_mc_location_list_t, *mc_location_list_t;
+
+Dwarf_Off mc_dwarf_resolve_location(mc_expression_t expression, unw_cursor_t* c, void* frame_pointer_address);
+Dwarf_Off mc_dwarf_resolve_locations(mc_location_list_t locations, unw_cursor_t* c, void* frame_pointer_address);
+
+void mc_dwarf_location_list_clear(mc_location_list_t list);
+
+void mc_dwarf_location_list_init_from_expression(mc_location_list_t target, size_t len, Dwarf_Op* ops);
+void mc_dwarf_location_list_init(mc_location_list_t target, mc_object_info_t info, Dwarf_Die* die, Dwarf_Attribute* attr);
+
+// ***** Deprecated locations:
+
 typedef enum {
   e_dw_loclist,
   e_dw_register,
@@ -412,21 +453,26 @@ typedef struct s_dw_location{
 }s_dw_location_t, *dw_location_t;
 
 typedef struct s_dw_location_entry{
-  long lowpc;
-  long highpc;
+  void* lowpc;
+  void* highpc;
   dw_location_t location;
 }s_dw_location_entry_t, *dw_location_entry_t;
 
+// ***** Variables and functions
+
 typedef struct s_dw_variable{
   Dwarf_Off dwarf_offset; /* Global offset of the field. */
   int global;
   char *name;
   char *type_origin;
+  dw_type_t type;
 
   // Use either of:
-  dw_location_t location;
+  s_mc_location_list_t locations;
   void* address;
 
+  size_t start_scope;
+
 }s_dw_variable_t, *dw_variable_t;
 
 struct s_dw_frame{
@@ -439,6 +485,11 @@ struct s_dw_frame{
   unsigned long int end;   /* Dwarf offset of the next sibling */
 };
 
+struct s_mc_function_index_item {
+  void* low_pc, *high_pc;
+  dw_frame_t function;
+};
+
 void dw_type_free(dw_type_t t);
 void dw_variable_free(dw_variable_t v);
 void dw_variable_free_voidp(void *t);
@@ -447,11 +498,31 @@ void MC_dwarf_register_global_variable(mc_object_info_t info, dw_variable_t vari
 void MC_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
 void MC_dwarf_register_non_global_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
 void MC_dwarf_register_variable(mc_object_info_t info, dw_frame_t frame, dw_variable_t variable);
+void* MC_object_base_address(mc_object_info_t info);
 
 /********************************** DWARF **********************************/
 
 Dwarf_Off MC_dwarf_resolve_location(unw_cursor_t* c, dw_location_t location, void* frame_pointer_address);
-void* mc_find_frame_base(unw_word_t ip, dw_frame_t frame, unw_cursor_t* unw_cursor);
+void* mc_find_frame_base(void* ip, dw_frame_t frame, unw_cursor_t* unw_cursor);
+
+#define MC_EXPRESSION_STACK_SIZE 64
+
+#define MC_EXPRESSION_OK 0
+#define MC_EXPRESSION_E_UNSUPPORTED_OPERATION 1
+#define MC_EXPRESSION_E_STACK_OVERFLOW 2
+#define MC_EXPRESSION_E_STACK_UNDERFLOW 3
+#define MC_EXPRESSION_E_MISSING_STACK_CONTEXT 4
+#define MC_EXPRESSION_E_MISSING_FRAME_BASE 5
+
+typedef struct s_mc_expression_state {
+  uintptr_t stack[MC_EXPRESSION_STACK_SIZE];
+  size_t stack_size;
+
+  unw_cursor_t* cursor;
+  void* frame_base;
+} s_mc_expression_state_t, *mc_expression_state_t;
+
+int mc_dwarf_execute_expression(size_t n, const Dwarf_Op* ops, mc_expression_state_t state);
 
 /********************************** Miscellaneous **********************************/
 
@@ -459,7 +530,7 @@ typedef struct s_local_variable{
   char *frame;
   unsigned long ip;
   char *name;
-  char *type;
+  dw_type_t type;
   void *address;
   int region;
 }s_local_variable_t, *local_variable_t;
@@ -473,6 +544,8 @@ typedef struct s_mc_comm_pattern{
   int completed;
   unsigned long src_proc;
   unsigned long dst_proc;
+  const char *src_host;
+  const char *dst_host;
   char *rdv;
   size_t data_size;
   void *data;