57ee306789
A long time ago we start with clang types that were created by the symbol files and there were many functions in lldb_private::ClangASTContext that helped. Later we create ClangASTType which contains a clang::ASTContext and an opauque QualType, but we didn't switch over to fully using it. There were a lot of places where we would pass around a raw clang_type_t and also pass along a clang::ASTContext separately. This left room for error. This checkin change all type code over to use ClangASTType everywhere and I cleaned up the interfaces quite a bit. Any code that was in ClangASTContext that was type related, was moved over into ClangASTType. All code that used these types was switched over to use all of the new goodness. llvm-svn: 186130
275 lines
12 KiB
C++
275 lines
12 KiB
C++
//===-- InferiorCallPOSIX.cpp -----------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "InferiorCallPOSIX.h"
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#include "lldb/Core/Address.h"
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#include "lldb/Core/StreamFile.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Symbol/SymbolContext.h"
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#include "lldb/Target/ExecutionContext.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/ThreadPlanCallFunction.h"
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#include <sys/mman.h>
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using namespace lldb;
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using namespace lldb_private;
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bool lldb_private::InferiorCallMmap(Process *process, addr_t &allocated_addr,
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addr_t addr, addr_t length, unsigned prot,
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unsigned flags, addr_t fd, addr_t offset) {
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Thread *thread = process->GetThreadList().GetSelectedThread().get();
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if (thread == NULL)
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return false;
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const bool append = true;
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const bool include_symbols = true;
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const bool include_inlines = false;
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SymbolContextList sc_list;
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const uint32_t count
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= process->GetTarget().GetImages().FindFunctions (ConstString ("mmap"),
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eFunctionNameTypeFull,
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include_symbols,
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include_inlines,
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append,
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sc_list);
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if (count > 0)
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{
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SymbolContext sc;
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if (sc_list.GetContextAtIndex(0, sc))
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{
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const uint32_t range_scope = eSymbolContextFunction | eSymbolContextSymbol;
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const bool use_inline_block_range = false;
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const bool stop_other_threads = true;
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const bool unwind_on_error = true;
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const bool ignore_breakpoints = true;
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const bool try_all_threads = true;
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const uint32_t timeout_usec = 500000;
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addr_t prot_arg, flags_arg = 0;
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if (prot == eMmapProtNone)
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prot_arg = PROT_NONE;
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else {
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prot_arg = 0;
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if (prot & eMmapProtExec)
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prot_arg |= PROT_EXEC;
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if (prot & eMmapProtRead)
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prot_arg |= PROT_READ;
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if (prot & eMmapProtWrite)
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prot_arg |= PROT_WRITE;
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}
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if (flags & eMmapFlagsPrivate)
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flags_arg |= MAP_PRIVATE;
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if (flags & eMmapFlagsAnon)
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flags_arg |= MAP_ANON;
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AddressRange mmap_range;
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if (sc.GetAddressRange(range_scope, 0, use_inline_block_range, mmap_range))
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{
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ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext();
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ClangASTType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
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ThreadPlanCallFunction *call_function_thread_plan
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= new ThreadPlanCallFunction (*thread,
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mmap_range.GetBaseAddress(),
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clang_void_ptr_type,
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stop_other_threads,
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unwind_on_error,
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ignore_breakpoints,
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&addr,
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&length,
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&prot_arg,
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&flags_arg,
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&fd,
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&offset);
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lldb::ThreadPlanSP call_plan_sp (call_function_thread_plan);
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if (call_plan_sp)
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{
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StreamFile error_strm;
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// This plan is a utility plan, so set it to discard itself when done.
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call_plan_sp->SetIsMasterPlan (true);
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call_plan_sp->SetOkayToDiscard(true);
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StackFrame *frame = thread->GetStackFrameAtIndex (0).get();
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if (frame)
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{
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ExecutionContext exe_ctx;
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frame->CalculateExecutionContext (exe_ctx);
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ExecutionResults result = process->RunThreadPlan (exe_ctx,
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call_plan_sp,
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stop_other_threads,
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try_all_threads,
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unwind_on_error,
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ignore_breakpoints,
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timeout_usec,
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error_strm);
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if (result == eExecutionCompleted)
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{
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allocated_addr = call_plan_sp->GetReturnValueObject()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
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if (process->GetAddressByteSize() == 4)
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{
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if (allocated_addr == UINT32_MAX)
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return false;
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}
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else if (process->GetAddressByteSize() == 8)
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{
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if (allocated_addr == UINT64_MAX)
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return false;
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}
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return true;
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}
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}
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}
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}
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}
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}
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return false;
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}
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bool lldb_private::InferiorCallMunmap(Process *process, addr_t addr,
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addr_t length) {
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Thread *thread = process->GetThreadList().GetSelectedThread().get();
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if (thread == NULL)
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return false;
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const bool append = true;
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const bool include_symbols = true;
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const bool include_inlines = false;
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SymbolContextList sc_list;
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const uint32_t count
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= process->GetTarget().GetImages().FindFunctions (ConstString ("munmap"),
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eFunctionNameTypeFull,
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include_symbols,
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include_inlines,
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append,
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sc_list);
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if (count > 0)
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{
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SymbolContext sc;
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if (sc_list.GetContextAtIndex(0, sc))
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{
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const uint32_t range_scope = eSymbolContextFunction | eSymbolContextSymbol;
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const bool use_inline_block_range = false;
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const bool stop_other_threads = true;
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const bool unwind_on_error = true;
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const bool ignore_breakpoints = true;
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const bool try_all_threads = true;
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const uint32_t timeout_usec = 500000;
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AddressRange munmap_range;
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if (sc.GetAddressRange(range_scope, 0, use_inline_block_range, munmap_range))
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{
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lldb::ThreadPlanSP call_plan_sp (new ThreadPlanCallFunction (*thread,
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munmap_range.GetBaseAddress(),
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ClangASTType(),
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stop_other_threads,
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unwind_on_error,
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ignore_breakpoints,
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&addr,
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&length));
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if (call_plan_sp)
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{
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StreamFile error_strm;
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// This plan is a utility plan, so set it to discard itself when done.
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call_plan_sp->SetIsMasterPlan (true);
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call_plan_sp->SetOkayToDiscard(true);
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StackFrame *frame = thread->GetStackFrameAtIndex (0).get();
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if (frame)
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{
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ExecutionContext exe_ctx;
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frame->CalculateExecutionContext (exe_ctx);
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ExecutionResults result = process->RunThreadPlan (exe_ctx,
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call_plan_sp,
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stop_other_threads,
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try_all_threads,
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unwind_on_error,
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ignore_breakpoints,
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timeout_usec,
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error_strm);
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if (result == eExecutionCompleted)
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{
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return true;
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}
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}
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}
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}
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}
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}
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return false;
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}
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bool lldb_private::InferiorCall(Process *process, const Address *address, addr_t &returned_func) {
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Thread *thread = process->GetThreadList().GetSelectedThread().get();
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if (thread == NULL || address == NULL)
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return false;
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const bool stop_other_threads = true;
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const bool unwind_on_error = true;
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const bool ignore_breakpoints = true;
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const bool try_all_threads = true;
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const uint32_t timeout_usec = 500000;
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ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext();
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ClangASTType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
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ThreadPlanCallFunction *call_function_thread_plan
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= new ThreadPlanCallFunction (*thread,
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*address,
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clang_void_ptr_type,
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stop_other_threads,
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unwind_on_error,
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ignore_breakpoints);
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lldb::ThreadPlanSP call_plan_sp (call_function_thread_plan);
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if (call_plan_sp)
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{
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StreamFile error_strm;
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// This plan is a utility plan, so set it to discard itself when done.
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call_plan_sp->SetIsMasterPlan (true);
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call_plan_sp->SetOkayToDiscard(true);
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StackFrame *frame = thread->GetStackFrameAtIndex (0).get();
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if (frame)
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{
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ExecutionContext exe_ctx;
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frame->CalculateExecutionContext (exe_ctx);
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ExecutionResults result = process->RunThreadPlan (exe_ctx,
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call_plan_sp,
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stop_other_threads,
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try_all_threads,
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unwind_on_error,
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ignore_breakpoints,
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timeout_usec,
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error_strm);
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if (result == eExecutionCompleted)
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{
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returned_func = call_plan_sp->GetReturnValueObject()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
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if (process->GetAddressByteSize() == 4)
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{
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if (returned_func == UINT32_MAX)
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return false;
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}
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else if (process->GetAddressByteSize() == 8)
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{
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if (returned_func == UINT64_MAX)
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return false;
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}
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return true;
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}
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}
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}
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return false;
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}
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