579e70c9b0
We want to do a better job presenting errors that occur when evaluating expressions. Key to this effort is getting away from a model where all errors are spat out onto a stream where the client has to take or leave all of them. To this end, this patch adds a new class, DiagnosticManager, which contains errors produced by the compiler or by LLDB as an expression is created. The DiagnosticManager can dump itself to a log as well as to a string. Clients will (in the future) be able to filter out the errors they're interested in by ID or present subsets of these errors to the user. This patch is not intended to change the *users* of errors - only to thread DiagnosticManagers to all the places where streams are used. I also attempt to standardize our use of errors a bit, removing trailing newlines and making clients omit 'error:', 'warning:' etc. and instead pass the Severity flag. The patch is testsuite-neutral, with modifications to one part of the MI tests because it relied on "error: error:" being erroneously printed. This patch fixes the MI variable handling and the testcase. <rdar://problem/22864976> llvm-svn: 263859
259 lines
9.9 KiB
C++
259 lines
9.9 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/Expression/DiagnosticManager.h"
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#include "lldb/Host/Config.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/Platform.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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#ifndef LLDB_DISABLE_POSIX
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#include <sys/mman.h>
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#else
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// define them
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#define PROT_NONE 0
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#define PROT_READ 1
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#define PROT_WRITE 2
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#define PROT_EXEC 4
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#endif
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using namespace lldb;
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using namespace lldb_private;
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bool
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lldb_private::InferiorCallMmap (Process *process,
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addr_t &allocated_addr,
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addr_t addr,
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addr_t length,
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unsigned prot,
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unsigned flags,
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addr_t fd,
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addr_t offset)
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{
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Thread *thread = process->GetThreadList().GetExpressionExecutionThread().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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EvaluateExpressionOptions options;
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options.SetStopOthers(true);
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options.SetUnwindOnError(true);
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options.SetIgnoreBreakpoints(true);
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options.SetTryAllThreads(true);
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options.SetDebug (false);
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options.SetTimeoutUsec(500000);
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options.SetTrapExceptions(false);
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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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const ArchSpec arch = process->GetTarget().GetArchitecture();
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flags_arg = process->GetTarget().GetPlatform()->ConvertMmapFlagsToPlatform(arch,flags);
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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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CompilerType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
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lldb::addr_t args[] = { addr, length, prot_arg, flags_arg, fd, offset };
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lldb::ThreadPlanSP call_plan_sp(new ThreadPlanCallFunction(*thread, mmap_range.GetBaseAddress(),
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clang_void_ptr_type, args, options));
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if (call_plan_sp)
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{
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DiagnosticManager diagnostics;
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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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ExpressionResults result = process->RunThreadPlan(exe_ctx, call_plan_sp, options, diagnostics);
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if (result == eExpressionCompleted)
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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
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lldb_private::InferiorCallMunmap (Process *process,
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addr_t addr,
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addr_t length)
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{
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Thread *thread = process->GetThreadList().GetExpressionExecutionThread().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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EvaluateExpressionOptions options;
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options.SetStopOthers(true);
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options.SetUnwindOnError(true);
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options.SetIgnoreBreakpoints(true);
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options.SetTryAllThreads(true);
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options.SetDebug (false);
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options.SetTimeoutUsec(500000);
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options.SetTrapExceptions(false);
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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::addr_t args[] = { addr, length };
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lldb::ThreadPlanSP call_plan_sp(
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new ThreadPlanCallFunction(*thread, munmap_range.GetBaseAddress(), CompilerType(), args, options));
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if (call_plan_sp)
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{
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DiagnosticManager diagnostics;
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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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ExpressionResults result = process->RunThreadPlan(exe_ctx, call_plan_sp, options, diagnostics);
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if (result == eExpressionCompleted)
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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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// FIXME: This has nothing to do with Posix, it is just a convenience function that calls a
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// function of the form "void * (*)(void)". We should find a better place to put this.
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bool
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lldb_private::InferiorCall (Process *process,
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const Address *address,
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addr_t &returned_func,
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bool trap_exceptions)
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{
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Thread *thread = process->GetThreadList().GetExpressionExecutionThread().get();
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if (thread == NULL || address == NULL)
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return false;
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EvaluateExpressionOptions options;
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options.SetStopOthers(true);
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options.SetUnwindOnError(true);
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options.SetIgnoreBreakpoints(true);
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options.SetTryAllThreads(true);
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options.SetDebug (false);
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options.SetTimeoutUsec(500000);
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options.SetTrapExceptions(trap_exceptions);
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ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext();
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CompilerType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
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lldb::ThreadPlanSP call_plan_sp(
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new ThreadPlanCallFunction(*thread, *address, clang_void_ptr_type, llvm::ArrayRef<addr_t>(), options));
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if (call_plan_sp)
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{
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DiagnosticManager diagnostics;
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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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ExpressionResults result = process->RunThreadPlan(exe_ctx, call_plan_sp, options, diagnostics);
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if (result == eExpressionCompleted)
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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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