2bdbfd50d2
the user level. It adds the ability to invent new stepping modes implemented by python classes, and to view the current thread plan stack and to some extent alter it. I haven't gotten to documentation or tests yet. But this should not cause any behavior changes if you don't use it, so its safe to check it in now and work on it incrementally. llvm-svn: 218642
284 lines
12 KiB
C++
284 lines
12 KiB
C++
//===-- InferiorCallPOSIX.cpp -----------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "InferiorCallPOSIX.h"
|
|
#include "lldb/Core/Address.h"
|
|
#include "lldb/Core/StreamFile.h"
|
|
#include "lldb/Core/ValueObject.h"
|
|
#include "lldb/Symbol/ClangASTContext.h"
|
|
#include "lldb/Symbol/SymbolContext.h"
|
|
#include "lldb/Target/ExecutionContext.h"
|
|
#include "lldb/Target/Process.h"
|
|
#include "lldb/Target/Target.h"
|
|
#include "lldb/Target/ThreadPlanCallFunction.h"
|
|
#include "lldb/Host/Config.h"
|
|
|
|
#ifndef LLDB_DISABLE_POSIX
|
|
#include <sys/mman.h>
|
|
#else
|
|
// define them
|
|
#define PROT_NONE 0
|
|
#define PROT_READ 1
|
|
#define PROT_WRITE 2
|
|
#define PROT_EXEC 4
|
|
#define MAP_PRIVATE 2
|
|
#define MAP_ANON 0x1000
|
|
#endif
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
|
|
bool
|
|
lldb_private::InferiorCallMmap (Process *process,
|
|
addr_t &allocated_addr,
|
|
addr_t addr,
|
|
addr_t length,
|
|
unsigned prot,
|
|
unsigned flags,
|
|
addr_t fd,
|
|
addr_t offset)
|
|
{
|
|
Thread *thread = process->GetThreadList().GetSelectedThread().get();
|
|
if (thread == NULL)
|
|
return false;
|
|
|
|
const bool append = true;
|
|
const bool include_symbols = true;
|
|
const bool include_inlines = false;
|
|
SymbolContextList sc_list;
|
|
const uint32_t count
|
|
= process->GetTarget().GetImages().FindFunctions (ConstString ("mmap"),
|
|
eFunctionNameTypeFull,
|
|
include_symbols,
|
|
include_inlines,
|
|
append,
|
|
sc_list);
|
|
if (count > 0)
|
|
{
|
|
SymbolContext sc;
|
|
if (sc_list.GetContextAtIndex(0, sc))
|
|
{
|
|
const uint32_t range_scope = eSymbolContextFunction | eSymbolContextSymbol;
|
|
const bool use_inline_block_range = false;
|
|
EvaluateExpressionOptions options;
|
|
options.SetStopOthers(true);
|
|
options.SetUnwindOnError(true);
|
|
options.SetIgnoreBreakpoints(true);
|
|
options.SetTryAllThreads(true);
|
|
options.SetDebug (false);
|
|
options.SetTimeoutUsec(500000);
|
|
|
|
addr_t prot_arg, flags_arg = 0;
|
|
if (prot == eMmapProtNone)
|
|
prot_arg = PROT_NONE;
|
|
else {
|
|
prot_arg = 0;
|
|
if (prot & eMmapProtExec)
|
|
prot_arg |= PROT_EXEC;
|
|
if (prot & eMmapProtRead)
|
|
prot_arg |= PROT_READ;
|
|
if (prot & eMmapProtWrite)
|
|
prot_arg |= PROT_WRITE;
|
|
}
|
|
|
|
if (flags & eMmapFlagsPrivate)
|
|
flags_arg |= MAP_PRIVATE;
|
|
if (flags & eMmapFlagsAnon)
|
|
flags_arg |= MAP_ANON;
|
|
|
|
AddressRange mmap_range;
|
|
if (sc.GetAddressRange(range_scope, 0, use_inline_block_range, mmap_range))
|
|
{
|
|
ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext();
|
|
ClangASTType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
|
|
lldb::addr_t args[] = { addr, length, prot_arg, flags_arg, fd, offset };
|
|
lldb::ThreadPlanSP call_plan_sp (new ThreadPlanCallFunction (*thread,
|
|
mmap_range.GetBaseAddress(),
|
|
clang_void_ptr_type,
|
|
args,
|
|
options));
|
|
if (call_plan_sp)
|
|
{
|
|
StreamFile error_strm;
|
|
// This plan is a utility plan, so set it to discard itself when done.
|
|
call_plan_sp->SetIsMasterPlan (true);
|
|
call_plan_sp->SetOkayToDiscard(true);
|
|
|
|
StackFrame *frame = thread->GetStackFrameAtIndex (0).get();
|
|
if (frame)
|
|
{
|
|
ExecutionContext exe_ctx;
|
|
frame->CalculateExecutionContext (exe_ctx);
|
|
ExpressionResults result = process->RunThreadPlan (exe_ctx,
|
|
call_plan_sp,
|
|
options,
|
|
error_strm);
|
|
if (result == eExpressionCompleted)
|
|
{
|
|
|
|
allocated_addr = call_plan_sp->GetReturnValueObject()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
|
|
if (process->GetAddressByteSize() == 4)
|
|
{
|
|
if (allocated_addr == UINT32_MAX)
|
|
return false;
|
|
}
|
|
else if (process->GetAddressByteSize() == 8)
|
|
{
|
|
if (allocated_addr == UINT64_MAX)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
lldb_private::InferiorCallMunmap (Process *process,
|
|
addr_t addr,
|
|
addr_t length)
|
|
{
|
|
Thread *thread = process->GetThreadList().GetSelectedThread().get();
|
|
if (thread == NULL)
|
|
return false;
|
|
|
|
const bool append = true;
|
|
const bool include_symbols = true;
|
|
const bool include_inlines = false;
|
|
SymbolContextList sc_list;
|
|
const uint32_t count
|
|
= process->GetTarget().GetImages().FindFunctions (ConstString ("munmap"),
|
|
eFunctionNameTypeFull,
|
|
include_symbols,
|
|
include_inlines,
|
|
append,
|
|
sc_list);
|
|
if (count > 0)
|
|
{
|
|
SymbolContext sc;
|
|
if (sc_list.GetContextAtIndex(0, sc))
|
|
{
|
|
const uint32_t range_scope = eSymbolContextFunction | eSymbolContextSymbol;
|
|
const bool use_inline_block_range = false;
|
|
EvaluateExpressionOptions options;
|
|
options.SetStopOthers(true);
|
|
options.SetUnwindOnError(true);
|
|
options.SetIgnoreBreakpoints(true);
|
|
options.SetTryAllThreads(true);
|
|
options.SetDebug (false);
|
|
options.SetTimeoutUsec(500000);
|
|
|
|
AddressRange munmap_range;
|
|
if (sc.GetAddressRange(range_scope, 0, use_inline_block_range, munmap_range))
|
|
{
|
|
lldb::addr_t args[] = { addr, length };
|
|
lldb::ThreadPlanSP call_plan_sp (new ThreadPlanCallFunction (*thread,
|
|
munmap_range.GetBaseAddress(),
|
|
ClangASTType(),
|
|
args,
|
|
options));
|
|
if (call_plan_sp)
|
|
{
|
|
StreamFile error_strm;
|
|
// This plan is a utility plan, so set it to discard itself when done.
|
|
call_plan_sp->SetIsMasterPlan (true);
|
|
call_plan_sp->SetOkayToDiscard(true);
|
|
|
|
StackFrame *frame = thread->GetStackFrameAtIndex (0).get();
|
|
if (frame)
|
|
{
|
|
ExecutionContext exe_ctx;
|
|
frame->CalculateExecutionContext (exe_ctx);
|
|
ExpressionResults result = process->RunThreadPlan (exe_ctx,
|
|
call_plan_sp,
|
|
options,
|
|
error_strm);
|
|
if (result == eExpressionCompleted)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// FIXME: This has nothing to do with Posix, it is just a convenience function that calls a
|
|
// function of the form "void * (*)(void)". We should find a better place to put this.
|
|
|
|
bool
|
|
lldb_private::InferiorCall (Process *process,
|
|
const Address *address,
|
|
addr_t &returned_func)
|
|
{
|
|
Thread *thread = process->GetThreadList().GetSelectedThread().get();
|
|
if (thread == NULL || address == NULL)
|
|
return false;
|
|
|
|
EvaluateExpressionOptions options;
|
|
options.SetStopOthers(true);
|
|
options.SetUnwindOnError(true);
|
|
options.SetIgnoreBreakpoints(true);
|
|
options.SetTryAllThreads(true);
|
|
options.SetDebug (false);
|
|
options.SetTimeoutUsec(500000);
|
|
|
|
ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext();
|
|
ClangASTType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
|
|
lldb::ThreadPlanSP call_plan_sp (new ThreadPlanCallFunction (*thread,
|
|
*address,
|
|
clang_void_ptr_type,
|
|
llvm::ArrayRef<addr_t>(),
|
|
options));
|
|
if (call_plan_sp)
|
|
{
|
|
StreamString error_strm;
|
|
// This plan is a utility plan, so set it to discard itself when done.
|
|
call_plan_sp->SetIsMasterPlan (true);
|
|
call_plan_sp->SetOkayToDiscard(true);
|
|
|
|
StackFrame *frame = thread->GetStackFrameAtIndex (0).get();
|
|
if (frame)
|
|
{
|
|
ExecutionContext exe_ctx;
|
|
frame->CalculateExecutionContext (exe_ctx);
|
|
ExpressionResults result = process->RunThreadPlan (exe_ctx,
|
|
call_plan_sp,
|
|
options,
|
|
error_strm);
|
|
if (result == eExpressionCompleted)
|
|
{
|
|
returned_func = call_plan_sp->GetReturnValueObject()->GetValueAsUnsigned(LLDB_INVALID_ADDRESS);
|
|
|
|
if (process->GetAddressByteSize() == 4)
|
|
{
|
|
if (returned_func == UINT32_MAX)
|
|
return false;
|
|
}
|
|
else if (process->GetAddressByteSize() == 8)
|
|
{
|
|
if (returned_func == UINT64_MAX)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|