forked from OSchip/llvm-project
98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
//===- llvm/Support/Unix/Host.inc -------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the UNIX Host support.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
//=== WARNING: Implementation here must contain only generic UNIX code that
|
|
//=== is guaranteed to work on *all* UNIX variants.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Config/config.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "Unix.h"
|
|
#include <sys/utsname.h>
|
|
#include <cctype>
|
|
#include <string>
|
|
|
|
using namespace llvm;
|
|
|
|
static std::string getOSVersion() {
|
|
struct utsname info;
|
|
|
|
if (uname(&info))
|
|
return "";
|
|
|
|
return info.release;
|
|
}
|
|
|
|
std::string sys::getHostTriple() {
|
|
// FIXME: Derive directly instead of relying on the autoconf generated
|
|
// variable.
|
|
|
|
StringRef HostTripleString(LLVM_HOSTTRIPLE);
|
|
std::pair<StringRef, StringRef> ArchSplit = HostTripleString.split('-');
|
|
|
|
// Normalize the arch, since the host triple may not actually match the host.
|
|
std::string Arch = ArchSplit.first;
|
|
|
|
// It would be nice to do this in terms of llvm::Triple, but that is in
|
|
// Support which is layered above us.
|
|
#if defined(__x86_64__)
|
|
Arch = "x86_64";
|
|
#elif defined(__i386__)
|
|
Arch = "i386";
|
|
#elif defined(__ppc64__)
|
|
Arch = "powerpc64";
|
|
#elif defined(__ppc__)
|
|
Arch = "powerpc";
|
|
#elif defined(__arm__)
|
|
|
|
// FIXME: We need to pick the right ARM triple (which involves querying the
|
|
// chip). However, for now this is most important for LLVM arch selection, so
|
|
// we only need to make sure to distinguish ARM and Thumb.
|
|
# if defined(__thumb__)
|
|
Arch = "thumb";
|
|
# else
|
|
Arch = "arm";
|
|
# endif
|
|
|
|
#else
|
|
|
|
// FIXME: When enough auto-detection is in place, this should just
|
|
// #error. Then at least the arch selection is done, and we only need the OS
|
|
// etc selection to kill off the use of LLVM_HOSTTRIPLE.
|
|
|
|
#endif
|
|
|
|
std::string Triple(Arch);
|
|
Triple += '-';
|
|
Triple += ArchSplit.second;
|
|
|
|
// Force i<N>86 to i386.
|
|
if (Triple[0] == 'i' && isdigit(Triple[1]) &&
|
|
Triple[2] == '8' && Triple[3] == '6')
|
|
Triple[1] = '3';
|
|
|
|
// On darwin, we want to update the version to match that of the
|
|
// host.
|
|
std::string::size_type DarwinDashIdx = Triple.find("-darwin");
|
|
if (DarwinDashIdx != std::string::npos) {
|
|
Triple.resize(DarwinDashIdx + strlen("-darwin"));
|
|
|
|
// Only add the major part of the os version.
|
|
std::string Version = getOSVersion();
|
|
Triple += Version.substr(0, Version.find('.'));
|
|
}
|
|
|
|
return Triple;
|
|
}
|