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//===-- ArchVolatileRegs-x86.cpp --------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "ArchVolatileRegs-x86.h"
#include "llvm/Support/MachO.h"
#include "lldb/lldb-private.h"
#include "lldb/Utility/ArchVolatileRegs.h"
#include "lldb/Core/ArchSpec.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/lldb-enumerations.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/RegisterContext.h"
#include <set>
using namespace lldb;
using namespace lldb_private;
bool
ArchVolatileRegs_x86::RegisterIsVolatile (Thread& thread, uint32_t regnum)
{
initialize_regset (thread);
if (m_non_volatile_regs.find (regnum) == m_non_volatile_regs.end())
return true;
else
return false;
}
lldb_private::ArchVolatileRegs *
ArchVolatileRegs_x86::CreateInstance (const lldb_private::ArchSpec &arch)
{
llvm::Triple::ArchType cpu = arch.GetMachine ();
if (cpu == llvm::Triple::x86 || cpu == llvm::Triple::x86_64)
return new ArchVolatileRegs_x86 (cpu);
return NULL;
}
ArchVolatileRegs_x86::ArchVolatileRegs_x86(llvm::Triple::ArchType cpu) :
lldb_private::ArchVolatileRegs(),
m_cpu(cpu),
m_non_volatile_regs()
{
}
void
ArchVolatileRegs_x86::initialize_regset(Thread& thread)
{
if (m_non_volatile_regs.size() > 0)
return;
RegisterContext *reg_ctx = thread.GetRegisterContext().get();
const RegisterInfo *ri;
const char *x86_64_regnames[] = { "rbx",
"rsp",
"rbp",
"r12",
"r13",
"r14",
"r15",
"rip" };
const char *i386_regnames[] = { "ebx",
"ebp",
"esi",
"edi",
"esp",
"eip" };
const char **names;
int namecount;
if (m_cpu == llvm::Triple::x86_64)
{
names = x86_64_regnames;
namecount = sizeof (x86_64_regnames) / sizeof (char *);
}
else
{
assert (m_cpu == llvm::Triple::x86);
names = i386_regnames;
namecount = sizeof (i386_regnames) / sizeof (char *);
}
for (int i = 0; i < namecount; i++)
{
ri = reg_ctx->GetRegisterInfoByName (names[i]);
if (ri)
m_non_volatile_regs.insert (ri->kinds[eRegisterKindLLDB]);
}
}
//------------------------------------------------------------------
// PluginInterface protocol in ArchVolatileRegs_x86
//------------------------------------------------------------------
const char *
ArchVolatileRegs_x86::GetPluginName()
{
return "ArchVolatileRegs_x86";
}
const char *
ArchVolatileRegs_x86::GetShortPluginName()
{
return "archvolatileregs.x86";
}
uint32_t
ArchVolatileRegs_x86::GetPluginVersion()
{
return 1;
}
void
ArchVolatileRegs_x86::GetPluginCommandHelp (const char *command, Stream *strm)
{
}
Error
ArchVolatileRegs_x86::ExecutePluginCommand (Args &command, Stream *strm)
{
Error error;
error.SetErrorString("No plug-in command are currently supported.");
return error;
}
Log *
ArchVolatileRegs_x86::EnablePluginLogging (Stream *strm, Args &command)
{
return NULL;
}
void
ArchVolatileRegs_x86::Initialize()
{
PluginManager::RegisterPlugin (GetPluginNameStatic(),
GetPluginDescriptionStatic(),
CreateInstance);
}
void
ArchVolatileRegs_x86::Terminate()
{
PluginManager::UnregisterPlugin (CreateInstance);
}
const char *
ArchVolatileRegs_x86::GetPluginNameStatic()
{
return "ArchVolatileRegs_x86";
}
const char *
ArchVolatileRegs_x86::GetPluginDescriptionStatic()
{
return "i386 and x86_64 architecture volatile register information.";
}
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