lldb/source/Expression/ExpressionParser.cpp

   1 //===-- ExpressionParser.cpp ----------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "lldb/Expression/ExpressionParser.h"
  10 #include "lldb/Expression/DiagnosticManager.h"
  11 #include "lldb/Expression/IRExecutionUnit.h"
  12 #include "lldb/Target/ExecutionContext.h"
  13 #include "lldb/Target/ThreadPlanCallFunction.h"
  14
  15 using namespace lldb;
  16 using namespace lldb_private;
  17
  18 Status ExpressionParser::PrepareForExecution(
  19     addr_t &func_addr, addr_t &func_end,
  20     std::shared_ptr<IRExecutionUnit> &execution_unit_sp,
  21     ExecutionContext &exe_ctx, bool &can_interpret,
  22     ExecutionPolicy execution_policy) {
  23   Status status =
  24       DoPrepareForExecution(func_addr, func_end, execution_unit_sp, exe_ctx,
  25                             can_interpret, execution_policy);
  26   if (status.Success() && exe_ctx.GetProcessPtr() && exe_ctx.HasThreadScope())
  27     status = RunStaticInitializers(execution_unit_sp, exe_ctx);
  28
  29   return status;
  30 }
  31
  32 Status
  33 ExpressionParser::RunStaticInitializers(IRExecutionUnitSP &execution_unit_sp,
  34                                         ExecutionContext &exe_ctx) {
  35   Status err;
  36
  37   if (!execution_unit_sp.get()) {
  38     err = Status::FromErrorString(
  39         "can't run static initializers for a NULL execution unit");
  40     return err;
  41   }
  42
  43   if (!exe_ctx.HasThreadScope()) {
  44     err = Status::FromErrorString(
  45         "can't run static initializers without a thread");
  46     return err;
  47   }
  48
  49   std::vector<addr_t> static_initializers;
  50
  51   execution_unit_sp->GetStaticInitializers(static_initializers);
  52
  53   for (addr_t static_initializer : static_initializers) {
  54     EvaluateExpressionOptions options;
  55
  56     ThreadPlanSP call_static_initializer(new ThreadPlanCallFunction(
  57         exe_ctx.GetThreadRef(), Address(static_initializer), CompilerType(),
  58         llvm::ArrayRef<addr_t>(), options));
  59
  60     DiagnosticManager execution_errors;
  61     ExpressionResults results =
  62         exe_ctx.GetThreadRef().GetProcess()->RunThreadPlan(
  63             exe_ctx, call_static_initializer, options, execution_errors);
  64
  65     if (results != eExpressionCompleted) {
  66       err = Status::FromError(execution_errors.GetAsError(
  67           lldb::eExpressionSetupError, "couldn't run static initializer:"));
  68       return err;
  69     }
  70   }
  71
  72   return err;
  73 }