dde487e547
To allow us to select a different platform based on where the process is running, plumb the process host architecture through platform selection. This patch is in preparation for D121444 which needs this functionality to tell apart iOS binaries running on Apple Silicon vs on a remote iOS device. Differential revision: https://reviews.llvm.org/D121484
348 lines
12 KiB
C++
348 lines
12 KiB
C++
//===-- PlatformNetBSD.cpp ------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "PlatformNetBSD.h"
|
|
#include "lldb/Host/Config.h"
|
|
|
|
#include <cstdio>
|
|
#if LLDB_ENABLE_POSIX
|
|
#include <sys/utsname.h>
|
|
#endif
|
|
|
|
#include "lldb/Core/Debugger.h"
|
|
#include "lldb/Core/PluginManager.h"
|
|
#include "lldb/Host/HostInfo.h"
|
|
#include "lldb/Target/Process.h"
|
|
#include "lldb/Target/Target.h"
|
|
#include "lldb/Utility/FileSpec.h"
|
|
#include "lldb/Utility/LLDBLog.h"
|
|
#include "lldb/Utility/Log.h"
|
|
#include "lldb/Utility/State.h"
|
|
#include "lldb/Utility/Status.h"
|
|
#include "lldb/Utility/StreamString.h"
|
|
|
|
// Define these constants from NetBSD mman.h for use when targeting remote
|
|
// netbsd systems even when host has different values.
|
|
#define MAP_PRIVATE 0x0002
|
|
#define MAP_ANON 0x1000
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
using namespace lldb_private::platform_netbsd;
|
|
|
|
LLDB_PLUGIN_DEFINE(PlatformNetBSD)
|
|
|
|
static uint32_t g_initialize_count = 0;
|
|
|
|
|
|
PlatformSP PlatformNetBSD::CreateInstance(bool force, const ArchSpec *arch) {
|
|
Log *log = GetLog(LLDBLog::Platform);
|
|
LLDB_LOG(log, "force = {0}, arch=({1}, {2})", force,
|
|
arch ? arch->GetArchitectureName() : "<null>",
|
|
arch ? arch->GetTriple().getTriple() : "<null>");
|
|
|
|
bool create = force;
|
|
if (!create && arch && arch->IsValid()) {
|
|
const llvm::Triple &triple = arch->GetTriple();
|
|
switch (triple.getOS()) {
|
|
case llvm::Triple::NetBSD:
|
|
create = true;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
LLDB_LOG(log, "create = {0}", create);
|
|
if (create) {
|
|
return PlatformSP(new PlatformNetBSD(false));
|
|
}
|
|
return PlatformSP();
|
|
}
|
|
|
|
llvm::StringRef PlatformNetBSD::GetPluginDescriptionStatic(bool is_host) {
|
|
if (is_host)
|
|
return "Local NetBSD user platform plug-in.";
|
|
return "Remote NetBSD user platform plug-in.";
|
|
}
|
|
|
|
void PlatformNetBSD::Initialize() {
|
|
PlatformPOSIX::Initialize();
|
|
|
|
if (g_initialize_count++ == 0) {
|
|
#if defined(__NetBSD__)
|
|
PlatformSP default_platform_sp(new PlatformNetBSD(true));
|
|
default_platform_sp->SetSystemArchitecture(HostInfo::GetArchitecture());
|
|
Platform::SetHostPlatform(default_platform_sp);
|
|
#endif
|
|
PluginManager::RegisterPlugin(
|
|
PlatformNetBSD::GetPluginNameStatic(false),
|
|
PlatformNetBSD::GetPluginDescriptionStatic(false),
|
|
PlatformNetBSD::CreateInstance, nullptr);
|
|
}
|
|
}
|
|
|
|
void PlatformNetBSD::Terminate() {
|
|
if (g_initialize_count > 0) {
|
|
if (--g_initialize_count == 0) {
|
|
PluginManager::UnregisterPlugin(PlatformNetBSD::CreateInstance);
|
|
}
|
|
}
|
|
|
|
PlatformPOSIX::Terminate();
|
|
}
|
|
|
|
/// Default Constructor
|
|
PlatformNetBSD::PlatformNetBSD(bool is_host)
|
|
: PlatformPOSIX(is_host) // This is the local host platform
|
|
{
|
|
if (is_host) {
|
|
ArchSpec hostArch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
|
|
m_supported_architectures.push_back(hostArch);
|
|
if (hostArch.GetTriple().isArch64Bit()) {
|
|
m_supported_architectures.push_back(
|
|
HostInfo::GetArchitecture(HostInfo::eArchKind32));
|
|
}
|
|
} else {
|
|
m_supported_architectures = CreateArchList(
|
|
{llvm::Triple::x86_64, llvm::Triple::x86}, llvm::Triple::NetBSD);
|
|
}
|
|
}
|
|
|
|
std::vector<ArchSpec>
|
|
PlatformNetBSD::GetSupportedArchitectures(const ArchSpec &process_host_arch) {
|
|
if (m_remote_platform_sp)
|
|
return m_remote_platform_sp->GetSupportedArchitectures(process_host_arch);
|
|
return m_supported_architectures;
|
|
}
|
|
|
|
void PlatformNetBSD::GetStatus(Stream &strm) {
|
|
Platform::GetStatus(strm);
|
|
|
|
#if LLDB_ENABLE_POSIX
|
|
// Display local kernel information only when we are running in host mode.
|
|
// Otherwise, we would end up printing non-NetBSD information (when running
|
|
// on Mac OS for example).
|
|
if (IsHost()) {
|
|
struct utsname un;
|
|
|
|
if (uname(&un))
|
|
return;
|
|
|
|
strm.Printf(" Kernel: %s\n", un.sysname);
|
|
strm.Printf(" Release: %s\n", un.release);
|
|
strm.Printf(" Version: %s\n", un.version);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
uint32_t
|
|
PlatformNetBSD::GetResumeCountForLaunchInfo(ProcessLaunchInfo &launch_info) {
|
|
uint32_t resume_count = 0;
|
|
|
|
// Always resume past the initial stop when we use eLaunchFlagDebug
|
|
if (launch_info.GetFlags().Test(eLaunchFlagDebug)) {
|
|
// Resume past the stop for the final exec into the true inferior.
|
|
++resume_count;
|
|
}
|
|
|
|
// If we're not launching a shell, we're done.
|
|
const FileSpec &shell = launch_info.GetShell();
|
|
if (!shell)
|
|
return resume_count;
|
|
|
|
std::string shell_string = shell.GetPath();
|
|
// We're in a shell, so for sure we have to resume past the shell exec.
|
|
++resume_count;
|
|
|
|
// Figure out what shell we're planning on using.
|
|
const char *shell_name = strrchr(shell_string.c_str(), '/');
|
|
if (shell_name == nullptr)
|
|
shell_name = shell_string.c_str();
|
|
else
|
|
shell_name++;
|
|
|
|
if (strcmp(shell_name, "csh") == 0 || strcmp(shell_name, "tcsh") == 0 ||
|
|
strcmp(shell_name, "zsh") == 0 || strcmp(shell_name, "sh") == 0) {
|
|
// These shells seem to re-exec themselves. Add another resume.
|
|
++resume_count;
|
|
}
|
|
|
|
return resume_count;
|
|
}
|
|
|
|
bool PlatformNetBSD::CanDebugProcess() {
|
|
if (IsHost()) {
|
|
return true;
|
|
} else {
|
|
// If we're connected, we can debug.
|
|
return IsConnected();
|
|
}
|
|
}
|
|
|
|
void PlatformNetBSD::CalculateTrapHandlerSymbolNames() {
|
|
m_trap_handlers.push_back(ConstString("_sigtramp"));
|
|
}
|
|
|
|
MmapArgList PlatformNetBSD::GetMmapArgumentList(const ArchSpec &arch,
|
|
addr_t addr, addr_t length,
|
|
unsigned prot, unsigned flags,
|
|
addr_t fd, addr_t offset) {
|
|
uint64_t flags_platform = 0;
|
|
|
|
if (flags & eMmapFlagsPrivate)
|
|
flags_platform |= MAP_PRIVATE;
|
|
if (flags & eMmapFlagsAnon)
|
|
flags_platform |= MAP_ANON;
|
|
|
|
MmapArgList args({addr, length, prot, flags_platform, fd, offset});
|
|
return args;
|
|
}
|
|
|
|
CompilerType PlatformNetBSD::GetSiginfoType(const llvm::Triple &triple) {
|
|
if (!m_type_system_up)
|
|
m_type_system_up.reset(new TypeSystemClang("siginfo", triple));
|
|
TypeSystemClang *ast = m_type_system_up.get();
|
|
|
|
// generic types
|
|
CompilerType int_type = ast->GetBasicType(eBasicTypeInt);
|
|
CompilerType uint_type = ast->GetBasicType(eBasicTypeUnsignedInt);
|
|
CompilerType long_type = ast->GetBasicType(eBasicTypeLong);
|
|
CompilerType long_long_type = ast->GetBasicType(eBasicTypeLongLong);
|
|
CompilerType voidp_type = ast->GetBasicType(eBasicTypeVoid).GetPointerType();
|
|
|
|
// platform-specific types
|
|
CompilerType &pid_type = int_type;
|
|
CompilerType &uid_type = uint_type;
|
|
CompilerType &clock_type = uint_type;
|
|
CompilerType &lwpid_type = int_type;
|
|
|
|
CompilerType sigval_type = ast->CreateRecordType(
|
|
nullptr, OptionalClangModuleID(), lldb::eAccessPublic, "__lldb_sigval_t",
|
|
clang::TTK_Union, lldb::eLanguageTypeC);
|
|
ast->StartTagDeclarationDefinition(sigval_type);
|
|
ast->AddFieldToRecordType(sigval_type, "sival_int", int_type,
|
|
lldb::eAccessPublic, 0);
|
|
ast->AddFieldToRecordType(sigval_type, "sival_ptr", voidp_type,
|
|
lldb::eAccessPublic, 0);
|
|
ast->CompleteTagDeclarationDefinition(sigval_type);
|
|
|
|
CompilerType ptrace_option_type = ast->CreateRecordType(
|
|
nullptr, OptionalClangModuleID(), lldb::eAccessPublic, "",
|
|
clang::TTK_Union, lldb::eLanguageTypeC);
|
|
ast->StartTagDeclarationDefinition(ptrace_option_type);
|
|
ast->AddFieldToRecordType(ptrace_option_type, "_pe_other_pid", pid_type,
|
|
lldb::eAccessPublic, 0);
|
|
ast->AddFieldToRecordType(ptrace_option_type, "_pe_lwp", lwpid_type,
|
|
lldb::eAccessPublic, 0);
|
|
ast->CompleteTagDeclarationDefinition(ptrace_option_type);
|
|
|
|
// siginfo_t
|
|
CompilerType siginfo_type = ast->CreateRecordType(
|
|
nullptr, OptionalClangModuleID(), lldb::eAccessPublic, "__lldb_siginfo_t",
|
|
clang::TTK_Union, lldb::eLanguageTypeC);
|
|
ast->StartTagDeclarationDefinition(siginfo_type);
|
|
|
|
// struct _ksiginfo
|
|
CompilerType ksiginfo_type = ast->CreateRecordType(
|
|
nullptr, OptionalClangModuleID(), lldb::eAccessPublic, "",
|
|
clang::TTK_Struct, lldb::eLanguageTypeC);
|
|
ast->StartTagDeclarationDefinition(ksiginfo_type);
|
|
ast->AddFieldToRecordType(ksiginfo_type, "_signo", int_type,
|
|
lldb::eAccessPublic, 0);
|
|
ast->AddFieldToRecordType(ksiginfo_type, "_code", int_type,
|
|
lldb::eAccessPublic, 0);
|
|
ast->AddFieldToRecordType(ksiginfo_type, "_errno", int_type,
|
|
lldb::eAccessPublic, 0);
|
|
|
|
// the structure is padded on 64-bit arches to fix alignment
|
|
if (triple.isArch64Bit())
|
|
ast->AddFieldToRecordType(ksiginfo_type, "__pad0", int_type,
|
|
lldb::eAccessPublic, 0);
|
|
|
|
// union used to hold the signal data
|
|
CompilerType union_type = ast->CreateRecordType(
|
|
nullptr, OptionalClangModuleID(), lldb::eAccessPublic, "",
|
|
clang::TTK_Union, lldb::eLanguageTypeC);
|
|
ast->StartTagDeclarationDefinition(union_type);
|
|
|
|
ast->AddFieldToRecordType(
|
|
union_type, "_rt",
|
|
ast->CreateStructForIdentifier(ConstString(),
|
|
{
|
|
{"_pid", pid_type},
|
|
{"_uid", uid_type},
|
|
{"_value", sigval_type},
|
|
}),
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->AddFieldToRecordType(
|
|
union_type, "_child",
|
|
ast->CreateStructForIdentifier(ConstString(),
|
|
{
|
|
{"_pid", pid_type},
|
|
{"_uid", uid_type},
|
|
{"_status", int_type},
|
|
{"_utime", clock_type},
|
|
{"_stime", clock_type},
|
|
}),
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->AddFieldToRecordType(
|
|
union_type, "_fault",
|
|
ast->CreateStructForIdentifier(ConstString(),
|
|
{
|
|
{"_addr", voidp_type},
|
|
{"_trap", int_type},
|
|
{"_trap2", int_type},
|
|
{"_trap3", int_type},
|
|
}),
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->AddFieldToRecordType(
|
|
union_type, "_poll",
|
|
ast->CreateStructForIdentifier(ConstString(),
|
|
{
|
|
{"_band", long_type},
|
|
{"_fd", int_type},
|
|
}),
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->AddFieldToRecordType(union_type, "_syscall",
|
|
ast->CreateStructForIdentifier(
|
|
ConstString(),
|
|
{
|
|
{"_sysnum", int_type},
|
|
{"_retval", int_type.GetArrayType(2)},
|
|
{"_error", int_type},
|
|
{"_args", long_long_type.GetArrayType(8)},
|
|
}),
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->AddFieldToRecordType(
|
|
union_type, "_ptrace_state",
|
|
ast->CreateStructForIdentifier(ConstString(),
|
|
{
|
|
{"_pe_report_event", int_type},
|
|
{"_option", ptrace_option_type},
|
|
}),
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->CompleteTagDeclarationDefinition(union_type);
|
|
ast->AddFieldToRecordType(ksiginfo_type, "_reason", union_type,
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->CompleteTagDeclarationDefinition(ksiginfo_type);
|
|
ast->AddFieldToRecordType(siginfo_type, "_info", ksiginfo_type,
|
|
lldb::eAccessPublic, 0);
|
|
|
|
ast->CompleteTagDeclarationDefinition(siginfo_type);
|
|
return siginfo_type;
|
|
}
|