X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cf108868b4eeed4d0d9d343bc68557d7814e18c0..0306c1d1de62ea1a118115476092d66cf6fe04b1:/src/mc/DwarfExpression.cpp

diff --git a/src/mc/DwarfExpression.cpp b/src/mc/DwarfExpression.cpp
index 6c90f3184a..b20366d122 100644
--- a/src/mc/DwarfExpression.cpp
+++ b/src/mc/DwarfExpression.cpp
@@ -1,31 +1,29 @@
-/* Copyright (c) 2014-2015. The SimGrid Team.
+/* Copyright (c) 2014-2017. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
+#include <cstddef>
 #include <cstdint>
-#include <cstdarg>
 
 #include <dwarf.h>
 #include <elfutils/libdw.h>
+#include <libunwind.h>
 
-#include "src/mc/mc_object_info.h"
-#include "src/mc/mc_private.h"
-#include "src/mc/LocationList.hpp"
 #include "src/mc/AddressSpace.hpp"
+#include "src/mc/DwarfExpression.hpp"
 #include "src/mc/Frame.hpp"
+#include "src/mc/LocationList.hpp"
 #include "src/mc/ObjectInformation.hpp"
-#include "src/mc/DwarfExpression.hpp"
 #include "src/mc/mc_dwarf.hpp"
+#include "src/mc/mc_private.hpp"
 
 using simgrid::mc::remote;
 
 namespace simgrid {
 namespace dwarf {
 
-evaluation_error::~evaluation_error() noexcept(true) {}
-
 void execute(
   const Dwarf_Op* ops, std::size_t n,
   const ExpressionContext& context, ExpressionStack& stack)
@@ -74,14 +72,14 @@ void execute(
         int register_id = simgrid::dwarf::dwarf_register_to_libunwind(
           op->atom - DW_OP_breg0);
         unw_word_t res;
-        if (!context.cursor)
+        if (not context.cursor)
           throw evaluation_error("Missing stack context");
         unw_get_reg(context.cursor, register_id, &res);
         stack.push(res + op->number);
         break;
       }
 
-      // Push the CFA (Canonical Frame Addresse):
+      // Push the CFA (Canonical Frame Address):
     case DW_OP_call_frame_cfa:
       {
         /* See 6.4 of DWARF4 (http://dwarfstd.org/doc/DWARF4.pdf#page=140):
@@ -96,7 +94,7 @@ void execute(
          * Warning: the CFA returned by libunwind (UNW_X86_64_RSP, etc.)
          * is the SP of the *current* frame. */
 
-        if (!context.cursor)
+        if (not context.cursor)
           throw evaluation_error("Missint cursor");
 
         // Get frame:
@@ -157,7 +155,7 @@ void execute(
       // Address from the base address of this ELF object.
       // Push the address on the stack (base_address + argument).
     case DW_OP_addr: {
-      if (!context.object_info)
+      if (not context.object_info)
         throw evaluation_error("No base address");
       Dwarf_Off addr = (Dwarf_Off) (std::uintptr_t)
         context.object_info->base_address() + op->number;
@@ -206,13 +204,19 @@ void execute(
       // and replace the top of the stack with the computed value
       // (stack.top() += stack.before_top()).
 
-    case DW_OP_plus:
-      stack.push(stack.pop() + stack.pop());
+    case DW_OP_plus: {
+      intptr_t first = stack.pop();
+      intptr_t second = stack.pop();
+      stack.push(first + second);
       break;
+    }
 
-    case DW_OP_mul:
-      stack.push(stack.pop() * stack.pop());
+    case DW_OP_mul: {
+      intptr_t first = stack.pop();
+      intptr_t second = stack.pop();
+      stack.push(first * second);
       break;
+    }
 
     case DW_OP_plus_uconst:
       stack.top() += op->number;
@@ -226,21 +230,33 @@ void execute(
       stack.top() = - (intptr_t) stack.top();
       break;
 
-    case DW_OP_minus:
-      stack.push(stack.pop() - stack.pop());
+    case DW_OP_minus: {
+      intptr_t first = stack.pop();
+      intptr_t second = stack.pop();
+      stack.push(second - first);
       break;
+    }
 
-    case DW_OP_and:
-      stack.push(stack.pop() & stack.pop());
+    case DW_OP_and: {
+      intptr_t first = stack.pop();
+      intptr_t second = stack.pop();
+      stack.push(first & second);
       break;
+    }
 
-    case DW_OP_or:
-      stack.push(stack.pop() | stack.pop());
+    case DW_OP_or: {
+      intptr_t first = stack.pop();
+      intptr_t second = stack.pop();
+      stack.push(first | second);
       break;
+    }
 
-    case DW_OP_xor:
-      stack.push(stack.pop() ^ stack.pop());
+    case DW_OP_xor: {
+      intptr_t first = stack.pop();
+      intptr_t second = stack.pop();
+      stack.push(first ^ second);
       break;
+    }
 
     case DW_OP_nop:
       break;
@@ -252,7 +268,7 @@ void execute(
 
     case DW_OP_deref:
       // Computed address:
-      if (!context.address_space)
+      if (not context.address_space)
         throw evaluation_error("Missing address space");
       context.address_space->read_bytes(
         &stack.top(), sizeof(uintptr_t), remote(stack.top()),