diff options
Diffstat (limited to 'lldb/source/Target/Process.cpp')
| -rw-r--r-- | lldb/source/Target/Process.cpp | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/lldb/source/Target/Process.cpp b/lldb/source/Target/Process.cpp index d71626790bf..fa7ac71c89e 100644 --- a/lldb/source/Target/Process.cpp +++ b/lldb/source/Target/Process.cpp @@ -21,6 +21,7 @@ #include "lldb/Interpreter/CommandInterpreter.h" #include "lldb/Host/Host.h" #include "lldb/Target/ABI.h" +#include "lldb/Target/DynamicLoader.h" #include "lldb/Target/LanguageRuntime.h" #include "lldb/Target/CPPLanguageRuntime.h" #include "lldb/Target/ObjCLanguageRuntime.h" @@ -471,6 +472,141 @@ Process::GetImageInfoAddress() return LLDB_INVALID_ADDRESS; } +//---------------------------------------------------------------------- +// LoadImage +// +// This function provides a default implementation that works for most +// unix variants. Any Process subclasses that need to do shared library +// loading differently should override LoadImage and UnloadImage and +// do what is needed. +//---------------------------------------------------------------------- +uint32_t +Process::LoadImage (const FileSpec &image_spec, Error &error) +{ + DynamicLoader *loader = GetDynamicLoader(); + if (loader) + { + error = loader->CanLoadImage(); + if (error.Fail()) + return LLDB_INVALID_IMAGE_TOKEN; + } + + if (error.Success()) + { + ThreadSP thread_sp(GetThreadList ().GetSelectedThread()); + if (thread_sp == NULL) + thread_sp = GetThreadList ().GetThreadAtIndex(0, true); + + if (thread_sp) + { + StackFrameSP frame_sp (thread_sp->GetStackFrameAtIndex (0)); + + if (frame_sp) + { + ExecutionContext exe_ctx; + frame_sp->CalculateExecutionContext (exe_ctx); + + StreamString expr; + char path[PATH_MAX]; + image_spec.GetPath(path, sizeof(path)); + expr.Printf("dlopen (\"%s\", 2)", path); + const char *prefix = "extern \"C\" void* dlopen (const char *path, int mode);\n"; + lldb::ValueObjectSP result_valobj_sp (ClangUserExpression::Evaluate (exe_ctx, expr.GetData(), prefix)); + if (result_valobj_sp->GetError().Success()) + { + Scalar scalar; + if (result_valobj_sp->ResolveValue (frame_sp.get(), scalar)) + { + addr_t image_ptr = scalar.ULongLong(LLDB_INVALID_ADDRESS); + if (image_ptr != 0 && image_ptr != LLDB_INVALID_ADDRESS) + { + uint32_t image_token = m_image_tokens.size(); + m_image_tokens.push_back (image_ptr); + return image_token; + } + } + } + } + } + } + return LLDB_INVALID_IMAGE_TOKEN; +} + +//---------------------------------------------------------------------- +// UnloadImage +// +// This function provides a default implementation that works for most +// unix variants. Any Process subclasses that need to do shared library +// loading differently should override LoadImage and UnloadImage and +// do what is needed. +//---------------------------------------------------------------------- +Error +Process::UnloadImage (uint32_t image_token) +{ + Error error; + if (image_token < m_image_tokens.size()) + { + const addr_t image_addr = m_image_tokens[image_token]; + if (image_addr == LLDB_INVALID_ADDRESS) + { + error.SetErrorString("image already unloaded"); + } + else + { + DynamicLoader *loader = GetDynamicLoader(); + if (loader) + error = loader->CanLoadImage(); + + if (error.Success()) + { + ThreadSP thread_sp(GetThreadList ().GetSelectedThread()); + if (thread_sp == NULL) + thread_sp = GetThreadList ().GetThreadAtIndex(0, true); + + if (thread_sp) + { + StackFrameSP frame_sp (thread_sp->GetStackFrameAtIndex (0)); + + if (frame_sp) + { + ExecutionContext exe_ctx; + frame_sp->CalculateExecutionContext (exe_ctx); + + StreamString expr; + expr.Printf("dlclose ((void *)0x%llx)", image_addr); + const char *prefix = "extern \"C\" int dlclose(void* handle);\n"; + lldb::ValueObjectSP result_valobj_sp (ClangUserExpression::Evaluate (exe_ctx, expr.GetData(), prefix)); + if (result_valobj_sp->GetError().Success()) + { + Scalar scalar; + if (result_valobj_sp->ResolveValue (frame_sp.get(), scalar)) + { + if (scalar.UInt(1)) + { + error.SetErrorStringWithFormat("expression failed: \"%s\"", expr.GetData()); + } + else + { + m_image_tokens[image_token] = LLDB_INVALID_ADDRESS; + } + } + } + else + { + error = result_valobj_sp->GetError(); + } + } + } + } + } + } + else + { + error.SetErrorString("invalid image token"); + } + return error; +} + DynamicLoader * Process::GetDynamicLoader() { |
