llvm-project/lldb/tools/debugserver/source/DNBArch.cpp

//===-- DNBArch.cpp ---------------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//  Created by Greg Clayton on 6/24/07.
//
//===----------------------------------------------------------------------===//

#include "DNBArch.h"
#include <assert.h>
#include <mach/mach.h>

#include <map>

#include "DNBLog.h"

typedef std::map<uint32_t, DNBArchPluginInfo> CPUPluginInfoMap;

#if defined (__i386__)
uint32_t g_current_cpu_type = CPU_TYPE_I386;
#elif defined (__x86_64__)
uint32_t g_current_cpu_type = CPU_TYPE_X86_64;
#elif defined (__arm__) 
uint32_t g_current_cpu_type = CPU_TYPE_ARM;
#else
uint32_t g_current_cpu_type = 0;
#endif

CPUPluginInfoMap g_arch_plugins;


static const DNBArchPluginInfo *
GetArchInfo ()
{
    CPUPluginInfoMap::const_iterator pos = g_arch_plugins.find(g_current_cpu_type);
    if (pos != g_arch_plugins.end())
        return &pos->second;
    return NULL;
}

void
DNBArchProtocol::SetDefaultArchitecture (uint32_t cpu_type)
{
    DNBLogThreadedIf (LOG_PROCESS, "DNBArchProtocol::SetDefaultArchitecture (cpu_type=0x%8.8x)", cpu_type);
    g_current_cpu_type = cpu_type;
    assert (g_arch_plugins.find(g_current_cpu_type) != g_arch_plugins.end());
}

void
DNBArchProtocol::RegisterArchPlugin (const DNBArchPluginInfo &arch_info)
{
    if (arch_info.cpu_type)
        g_arch_plugins[arch_info.cpu_type] = arch_info;
}

const DNBRegisterSetInfo *
DNBArchProtocol::GetRegisterSetInfo (nub_size_t *num_reg_sets)
{
    const DNBArchPluginInfo *arch_info = GetArchInfo ();
    if (arch_info)
        return arch_info->GetRegisterSetInfo (num_reg_sets);
    *num_reg_sets = 0;
    return NULL;
}

DNBArchProtocol *
DNBArchProtocol::Create (MachThread *thread)
{
    const DNBArchPluginInfo *arch_info = GetArchInfo ();
    if (arch_info)
        return arch_info->Create (thread);
    return NULL;

}

const uint8_t * const 
DNBArchProtocol::GetBreakpointOpcode (nub_size_t byte_size)
{
    const DNBArchPluginInfo *arch_info = GetArchInfo ();
    if (arch_info)
        return arch_info->GetBreakpointOpcode (byte_size);
    return NULL;
}