2016-01-04 12:22:34 +00:00
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//===-- MCObjectFileInfo.cpp - Object File Information --------------------===//
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2011-07-20 05:58:47 +00:00
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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 "llvm/MC/MCObjectFileInfo.h"
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2013-12-13 21:33:40 +00:00
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#include "llvm/ADT/StringExtras.h"
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2014-01-07 11:48:04 +00:00
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#include "llvm/ADT/Triple.h"
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2014-05-13 17:58:13 +00:00
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#include "llvm/MC/MCAsmInfo.h"
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2011-07-20 05:58:47 +00:00
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCSection.h"
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#include "llvm/MC/MCSectionCOFF.h"
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#include "llvm/MC/MCSectionELF.h"
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#include "llvm/MC/MCSectionMachO.h"
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2015-09-03 16:41:50 +00:00
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#include "llvm/Support/COFF.h"
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2015-10-06 23:24:35 +00:00
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2011-07-20 05:58:47 +00:00
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using namespace llvm;
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2014-06-20 22:37:01 +00:00
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static bool useCompactUnwind(const Triple &T) {
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// Only on darwin.
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if (!T.isOSDarwin())
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return false;
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// aarch64 always has it.
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2014-07-23 12:32:47 +00:00
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if (T.getArch() == Triple::aarch64)
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2014-06-20 22:37:01 +00:00
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return true;
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2015-10-28 22:56:36 +00:00
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// armv7k always has it.
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2016-01-27 19:32:29 +00:00
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if (T.isWatchABI())
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2015-10-28 22:56:36 +00:00
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return true;
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2014-06-20 22:37:01 +00:00
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// Use it on newer version of OS X.
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if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
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return true;
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2014-06-20 22:40:55 +00:00
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// And the iOS simulator.
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if (T.isiOS() &&
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(T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86))
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return true;
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2014-06-20 22:37:01 +00:00
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return false;
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}
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2015-06-04 23:35:03 +00:00
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void MCObjectFileInfo::initMachOMCObjectFileInfo(Triple T) {
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2011-07-20 05:58:47 +00:00
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// MachO
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SupportsWeakOmittedEHFrame = false;
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2015-11-06 15:30:45 +00:00
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EHFrameSection = Ctx->getMachOSection(
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"__TEXT", "__eh_frame",
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MachO::S_COALESCED | MachO::S_ATTR_NO_TOC |
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MachO::S_ATTR_STRIP_STATIC_SYMS | MachO::S_ATTR_LIVE_SUPPORT,
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SectionKind::getReadOnly());
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2014-07-23 12:32:47 +00:00
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if (T.isOSDarwin() && T.getArch() == Triple::aarch64)
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2014-03-29 10:18:08 +00:00
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SupportsCompactUnwindWithoutEHFrame = true;
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2016-01-27 19:32:29 +00:00
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if (T.isWatchABI())
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2015-10-28 22:56:36 +00:00
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OmitDwarfIfHaveCompactUnwind = true;
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2011-07-20 19:50:42 +00:00
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PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
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| dwarf::DW_EH_PE_sdata4;
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2014-05-12 13:47:05 +00:00
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LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
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2011-07-20 19:50:42 +00:00
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TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
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dwarf::DW_EH_PE_sdata4;
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2011-07-20 05:58:47 +00:00
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// .comm doesn't support alignment before Leopard.
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if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
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CommDirectiveSupportsAlignment = false;
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TextSection // .text
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= Ctx->getMachOSection("__TEXT", "__text",
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2014-03-07 07:36:05 +00:00
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MachO::S_ATTR_PURE_INSTRUCTIONS,
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2011-07-20 05:58:47 +00:00
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SectionKind::getText());
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DataSection // .data
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2015-11-18 06:02:15 +00:00
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= Ctx->getMachOSection("__DATA", "__data", 0, SectionKind::getData());
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2011-07-20 05:58:47 +00:00
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2013-09-21 02:34:45 +00:00
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// BSSSection might not be expected initialized on msvc.
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2014-04-13 04:57:38 +00:00
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BSSSection = nullptr;
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2013-09-21 02:34:45 +00:00
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2011-07-20 05:58:47 +00:00
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TLSDataSection // .tdata
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2015-11-18 06:02:15 +00:00
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= Ctx->getMachOSection("__DATA", "__thread_data",
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MachO::S_THREAD_LOCAL_REGULAR,
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SectionKind::getData());
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2011-07-20 05:58:47 +00:00
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TLSBSSSection // .tbss
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= Ctx->getMachOSection("__DATA", "__thread_bss",
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2014-03-07 07:36:05 +00:00
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MachO::S_THREAD_LOCAL_ZEROFILL,
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2011-07-20 05:58:47 +00:00
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SectionKind::getThreadBSS());
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// TODO: Verify datarel below.
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TLSTLVSection // .tlv
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2015-11-18 06:02:15 +00:00
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= Ctx->getMachOSection("__DATA", "__thread_vars",
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MachO::S_THREAD_LOCAL_VARIABLES,
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SectionKind::getData());
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2011-07-20 05:58:47 +00:00
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2015-11-18 06:02:15 +00:00
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TLSThreadInitSection = Ctx->getMachOSection(
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"__DATA", "__thread_init", MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
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SectionKind::getData());
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2011-07-20 05:58:47 +00:00
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CStringSection // .cstring
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= Ctx->getMachOSection("__TEXT", "__cstring",
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2014-03-07 07:36:05 +00:00
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MachO::S_CSTRING_LITERALS,
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2011-07-20 05:58:47 +00:00
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SectionKind::getMergeable1ByteCString());
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UStringSection
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= Ctx->getMachOSection("__TEXT","__ustring", 0,
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SectionKind::getMergeable2ByteCString());
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FourByteConstantSection // .literal4
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= Ctx->getMachOSection("__TEXT", "__literal4",
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2014-03-07 07:36:05 +00:00
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MachO::S_4BYTE_LITERALS,
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2011-07-20 05:58:47 +00:00
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SectionKind::getMergeableConst4());
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EightByteConstantSection // .literal8
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= Ctx->getMachOSection("__TEXT", "__literal8",
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2014-03-07 07:36:05 +00:00
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MachO::S_8BYTE_LITERALS,
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2011-07-20 05:58:47 +00:00
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SectionKind::getMergeableConst8());
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2014-02-13 23:16:11 +00:00
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SixteenByteConstantSection // .literal16
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= Ctx->getMachOSection("__TEXT", "__literal16",
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2014-03-07 07:36:05 +00:00
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MachO::S_16BYTE_LITERALS,
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2014-02-13 23:16:11 +00:00
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SectionKind::getMergeableConst16());
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2011-07-20 05:58:47 +00:00
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ReadOnlySection // .const
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= Ctx->getMachOSection("__TEXT", "__const", 0,
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SectionKind::getReadOnly());
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2015-10-15 05:28:38 +00:00
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// If the target is not powerpc, map the coal sections to the non-coal
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// sections.
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//
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// "__TEXT/__textcoal_nt" => section "__TEXT/__text"
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// "__TEXT/__const_coal" => section "__TEXT/__const"
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// "__DATA/__datacoal_nt" => section "__DATA/__data"
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Triple::ArchType ArchTy = T.getArch();
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if (ArchTy == Triple::ppc || ArchTy == Triple::ppc64) {
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TextCoalSection
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= Ctx->getMachOSection("__TEXT", "__textcoal_nt",
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MachO::S_COALESCED |
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MachO::S_ATTR_PURE_INSTRUCTIONS,
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SectionKind::getText());
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ConstTextCoalSection
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= Ctx->getMachOSection("__TEXT", "__const_coal",
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MachO::S_COALESCED,
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SectionKind::getReadOnly());
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2015-11-18 06:02:15 +00:00
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DataCoalSection = Ctx->getMachOSection(
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"__DATA", "__datacoal_nt", MachO::S_COALESCED, SectionKind::getData());
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2015-10-15 05:28:38 +00:00
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} else {
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TextCoalSection = TextSection;
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ConstTextCoalSection = ReadOnlySection;
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DataCoalSection = DataSection;
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}
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2011-07-20 05:58:47 +00:00
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ConstDataSection // .const_data
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= Ctx->getMachOSection("__DATA", "__const", 0,
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SectionKind::getReadOnlyWithRel());
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DataCommonSection
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= Ctx->getMachOSection("__DATA","__common",
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2014-03-07 07:36:05 +00:00
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MachO::S_ZEROFILL,
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2011-07-20 05:58:47 +00:00
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SectionKind::getBSS());
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DataBSSSection
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2014-03-07 07:36:05 +00:00
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= Ctx->getMachOSection("__DATA","__bss", MachO::S_ZEROFILL,
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2011-07-20 05:58:47 +00:00
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SectionKind::getBSS());
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LazySymbolPointerSection
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= Ctx->getMachOSection("__DATA", "__la_symbol_ptr",
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2014-03-07 07:36:05 +00:00
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MachO::S_LAZY_SYMBOL_POINTERS,
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2011-07-20 05:58:47 +00:00
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SectionKind::getMetadata());
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NonLazySymbolPointerSection
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= Ctx->getMachOSection("__DATA", "__nl_symbol_ptr",
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2014-03-07 07:36:05 +00:00
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MachO::S_NON_LAZY_SYMBOL_POINTERS,
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2011-07-20 05:58:47 +00:00
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SectionKind::getMetadata());
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if (RelocM == Reloc::Static) {
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2015-11-18 06:02:15 +00:00
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StaticCtorSection = Ctx->getMachOSection("__TEXT", "__constructor", 0,
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SectionKind::getData());
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StaticDtorSection = Ctx->getMachOSection("__TEXT", "__destructor", 0,
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SectionKind::getData());
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2011-07-20 05:58:47 +00:00
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} else {
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2015-11-18 06:02:15 +00:00
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StaticCtorSection = Ctx->getMachOSection("__DATA", "__mod_init_func",
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MachO::S_MOD_INIT_FUNC_POINTERS,
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SectionKind::getData());
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StaticDtorSection = Ctx->getMachOSection("__DATA", "__mod_term_func",
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MachO::S_MOD_TERM_FUNC_POINTERS,
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SectionKind::getData());
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2011-07-20 05:58:47 +00:00
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}
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// Exception Handling.
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LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
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SectionKind::getReadOnlyWithRel());
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2014-04-13 04:57:38 +00:00
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COFFDebugSymbolsSection = nullptr;
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2016-01-29 18:16:43 +00:00
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COFFDebugTypesSection = nullptr;
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2014-01-30 01:39:17 +00:00
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2014-06-20 22:37:01 +00:00
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if (useCompactUnwind(T)) {
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2011-07-20 05:58:47 +00:00
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CompactUnwindSection =
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2014-06-20 22:37:01 +00:00
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Ctx->getMachOSection("__LD", "__compact_unwind", MachO::S_ATTR_DEBUG,
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SectionKind::getReadOnly());
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2011-07-20 05:58:47 +00:00
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2013-04-10 21:42:06 +00:00
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if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
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2015-10-28 22:56:36 +00:00
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CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_X86_64_MODE_DWARF
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2014-07-23 12:32:47 +00:00
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else if (T.getArch() == Triple::aarch64)
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2015-10-28 22:56:36 +00:00
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CompactUnwindDwarfEHFrameOnly = 0x03000000; // UNWIND_ARM64_MODE_DWARF
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else if (T.getArch() == Triple::arm || T.getArch() == Triple::thumb)
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CompactUnwindDwarfEHFrameOnly = 0x04000000; // UNWIND_ARM_MODE_DWARF
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2013-04-10 21:42:06 +00:00
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}
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2011-07-20 05:58:47 +00:00
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// Debug Information.
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2011-11-07 09:24:32 +00:00
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DwarfAccelNamesSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__apple_names", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "names_begin");
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2011-11-07 09:24:32 +00:00
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DwarfAccelObjCSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__apple_objc", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "objc_begin");
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2011-11-07 09:24:32 +00:00
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// 16 character section limit...
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DwarfAccelNamespaceSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__apple_namespac", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "namespac_begin");
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2011-11-07 09:24:32 +00:00
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DwarfAccelTypesSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__apple_types", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "types_begin");
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2012-05-11 01:41:30 +00:00
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2011-07-20 05:58:47 +00:00
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DwarfAbbrevSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_abbrev", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "section_abbrev");
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2011-07-20 05:58:47 +00:00
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DwarfInfoSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_info", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "section_info");
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2011-07-20 05:58:47 +00:00
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DwarfLineSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_line", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "section_line");
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2011-07-20 05:58:47 +00:00
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DwarfFrameSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_frame", MachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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2013-02-12 18:00:14 +00:00
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DwarfPubNamesSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_pubnames", MachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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2011-07-20 05:58:47 +00:00
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DwarfPubTypesSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_pubtypes", MachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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2013-09-09 20:03:14 +00:00
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DwarfGnuPubNamesSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_gnu_pubn", MachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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2013-09-09 20:03:14 +00:00
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DwarfGnuPubTypesSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_gnu_pubt", MachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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2011-07-20 05:58:47 +00:00
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DwarfStrSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_str", MachO::S_ATTR_DEBUG,
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2015-03-10 22:00:25 +00:00
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SectionKind::getMetadata(), "info_string");
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2011-07-20 05:58:47 +00:00
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DwarfLocSection =
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2015-03-10 21:16:18 +00:00
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Ctx->getMachOSection("__DWARF", "__debug_loc", MachO::S_ATTR_DEBUG,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "section_debug_loc");
|
2011-07-20 05:58:47 +00:00
|
|
|
DwarfARangesSection =
|
2015-03-10 21:16:18 +00:00
|
|
|
Ctx->getMachOSection("__DWARF", "__debug_aranges", MachO::S_ATTR_DEBUG,
|
|
|
|
SectionKind::getMetadata());
|
2011-07-20 05:58:47 +00:00
|
|
|
DwarfRangesSection =
|
2015-03-10 21:16:18 +00:00
|
|
|
Ctx->getMachOSection("__DWARF", "__debug_ranges", MachO::S_ATTR_DEBUG,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "debug_range");
|
2016-01-07 14:28:20 +00:00
|
|
|
DwarfMacinfoSection =
|
|
|
|
Ctx->getMachOSection("__DWARF", "__debug_macinfo", MachO::S_ATTR_DEBUG,
|
2016-02-01 14:09:41 +00:00
|
|
|
SectionKind::getMetadata(), "debug_macinfo");
|
2011-07-20 05:58:47 +00:00
|
|
|
DwarfDebugInlineSection =
|
2015-03-10 21:16:18 +00:00
|
|
|
Ctx->getMachOSection("__DWARF", "__debug_inlined", MachO::S_ATTR_DEBUG,
|
|
|
|
SectionKind::getMetadata());
|
2015-12-02 06:21:34 +00:00
|
|
|
DwarfCUIndexSection =
|
|
|
|
Ctx->getMachOSection("__DWARF", "__debug_cu_index", MachO::S_ATTR_DEBUG,
|
|
|
|
SectionKind::getMetadata());
|
2015-12-05 03:05:45 +00:00
|
|
|
DwarfTUIndexSection =
|
|
|
|
Ctx->getMachOSection("__DWARF", "__debug_tu_index", MachO::S_ATTR_DEBUG,
|
|
|
|
SectionKind::getMetadata());
|
2015-03-10 21:16:18 +00:00
|
|
|
StackMapSection = Ctx->getMachOSection("__LLVM_STACKMAPS", "__llvm_stackmaps",
|
|
|
|
0, SectionKind::getMetadata());
|
2011-07-20 05:58:47 +00:00
|
|
|
|
2015-06-15 18:44:08 +00:00
|
|
|
FaultMapSection = Ctx->getMachOSection("__LLVM_FAULTMAPS", "__llvm_faultmaps",
|
|
|
|
0, SectionKind::getMetadata());
|
|
|
|
|
2011-07-20 05:58:47 +00:00
|
|
|
TLSExtraDataSection = TLSTLVSection;
|
|
|
|
}
|
|
|
|
|
2015-06-04 23:35:03 +00:00
|
|
|
void MCObjectFileInfo::initELFMCObjectFileInfo(Triple T) {
|
2014-04-30 23:23:14 +00:00
|
|
|
switch (T.getArch()) {
|
|
|
|
case Triple::mips:
|
|
|
|
case Triple::mipsel:
|
2013-04-03 03:13:19 +00:00
|
|
|
FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
|
2014-04-30 23:23:14 +00:00
|
|
|
break;
|
|
|
|
case Triple::mips64:
|
|
|
|
case Triple::mips64el:
|
2013-04-03 03:13:19 +00:00
|
|
|
FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
|
2014-11-27 17:13:56 +00:00
|
|
|
break;
|
|
|
|
case Triple::x86_64:
|
|
|
|
FDECFIEncoding = dwarf::DW_EH_PE_pcrel |
|
|
|
|
((CMModel == CodeModel::Large) ? dwarf::DW_EH_PE_sdata8
|
|
|
|
: dwarf::DW_EH_PE_sdata4);
|
2014-04-30 23:23:14 +00:00
|
|
|
break;
|
|
|
|
default:
|
2013-03-15 05:51:57 +00:00
|
|
|
FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
|
2014-04-30 23:23:14 +00:00
|
|
|
break;
|
|
|
|
}
|
2013-03-15 05:51:57 +00:00
|
|
|
|
2014-04-30 23:23:14 +00:00
|
|
|
switch (T.getArch()) {
|
2014-05-07 07:49:34 +00:00
|
|
|
case Triple::arm:
|
|
|
|
case Triple::armeb:
|
|
|
|
case Triple::thumb:
|
|
|
|
case Triple::thumbeb:
|
2014-05-13 17:58:13 +00:00
|
|
|
if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
|
|
|
|
break;
|
|
|
|
// Fallthrough if not using EHABI
|
2014-07-24 19:25:16 +00:00
|
|
|
case Triple::ppc:
|
2014-04-30 23:23:14 +00:00
|
|
|
case Triple::x86:
|
2011-07-20 19:50:42 +00:00
|
|
|
PersonalityEncoding = (RelocM == Reloc::PIC_)
|
2011-11-15 16:46:22 +00:00
|
|
|
? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
|
|
|
|
: dwarf::DW_EH_PE_absptr;
|
2011-07-20 19:50:42 +00:00
|
|
|
LSDAEncoding = (RelocM == Reloc::PIC_)
|
|
|
|
? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
|
|
|
|
: dwarf::DW_EH_PE_absptr;
|
|
|
|
TTypeEncoding = (RelocM == Reloc::PIC_)
|
2011-11-15 16:46:22 +00:00
|
|
|
? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
|
|
|
|
: dwarf::DW_EH_PE_absptr;
|
2014-04-30 23:23:14 +00:00
|
|
|
break;
|
|
|
|
case Triple::x86_64:
|
2011-07-20 19:50:42 +00:00
|
|
|
if (RelocM == Reloc::PIC_) {
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
|
|
|
|
? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_pcrel |
|
|
|
|
(CMModel == CodeModel::Small
|
|
|
|
? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
|
|
|
|
? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
|
|
|
|
} else {
|
|
|
|
PersonalityEncoding =
|
|
|
|
(CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
|
|
|
|
? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
|
|
|
|
LSDAEncoding = (CMModel == CodeModel::Small)
|
|
|
|
? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
|
|
|
|
TTypeEncoding = (CMModel == CodeModel::Small)
|
|
|
|
? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
|
|
|
|
}
|
2014-04-30 23:23:14 +00:00
|
|
|
break;
|
|
|
|
case Triple::aarch64:
|
|
|
|
case Triple::aarch64_be:
|
2013-01-31 12:12:40 +00:00
|
|
|
// The small model guarantees static code/data size < 4GB, but not where it
|
|
|
|
// will be in memory. Most of these could end up >2GB away so even a signed
|
|
|
|
// pc-relative 32-bit address is insufficient, theoretically.
|
|
|
|
if (RelocM == Reloc::PIC_) {
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata8;
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata8;
|
|
|
|
} else {
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
}
|
2014-04-30 23:23:14 +00:00
|
|
|
break;
|
2016-03-01 21:21:42 +00:00
|
|
|
case Triple::lanai:
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
break;
|
2014-05-30 16:48:56 +00:00
|
|
|
case Triple::mips:
|
|
|
|
case Triple::mipsel:
|
2014-11-05 22:42:31 +00:00
|
|
|
case Triple::mips64:
|
|
|
|
case Triple::mips64el:
|
2015-06-02 20:32:50 +00:00
|
|
|
// MIPS uses indirect pointer to refer personality functions and types, so
|
|
|
|
// that the eh_frame section can be read-only. DW.ref.personality will be
|
|
|
|
// generated for relocation.
|
2014-05-30 16:48:56 +00:00
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_indirect;
|
2015-06-02 20:32:50 +00:00
|
|
|
// FIXME: The N64 ABI probably ought to use DW_EH_PE_sdata8 but we can't
|
|
|
|
// identify N64 from just a triple.
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata4;
|
|
|
|
// We don't support PC-relative LSDA references in GAS so we use the default
|
|
|
|
// DW_EH_PE_absptr for those.
|
2014-05-30 16:48:56 +00:00
|
|
|
break;
|
2014-04-30 23:23:14 +00:00
|
|
|
case Triple::ppc64:
|
|
|
|
case Triple::ppc64le:
|
2013-01-09 17:08:15 +00:00
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_udata8;
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_udata8;
|
2014-04-30 23:23:14 +00:00
|
|
|
break;
|
2015-04-29 20:30:57 +00:00
|
|
|
case Triple::sparcel:
|
2014-04-30 23:23:14 +00:00
|
|
|
case Triple::sparc:
|
2014-01-28 02:52:26 +00:00
|
|
|
if (RelocM == Reloc::PIC_) {
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata4;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata4;
|
|
|
|
} else {
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
}
|
2014-04-30 23:36:24 +00:00
|
|
|
break;
|
2014-04-30 23:23:14 +00:00
|
|
|
case Triple::sparcv9:
|
2014-01-28 02:52:26 +00:00
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
|
|
|
|
if (RelocM == Reloc::PIC_) {
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata4;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata4;
|
|
|
|
} else {
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
}
|
2014-04-30 23:36:24 +00:00
|
|
|
break;
|
2014-04-30 23:23:14 +00:00
|
|
|
case Triple::systemz:
|
2013-05-06 16:11:12 +00:00
|
|
|
// All currently-defined code models guarantee that 4-byte PC-relative
|
|
|
|
// values will be in range.
|
2013-05-06 17:28:30 +00:00
|
|
|
if (RelocM == Reloc::PIC_) {
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata4;
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
|
|
|
|
dwarf::DW_EH_PE_sdata4;
|
|
|
|
} else {
|
|
|
|
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
LSDAEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
TTypeEncoding = dwarf::DW_EH_PE_absptr;
|
|
|
|
}
|
2014-04-30 23:36:24 +00:00
|
|
|
break;
|
2014-04-30 23:23:14 +00:00
|
|
|
default:
|
|
|
|
break;
|
2011-07-20 19:50:42 +00:00
|
|
|
}
|
|
|
|
|
2015-11-06 15:30:45 +00:00
|
|
|
unsigned EHSectionType = T.getArch() == Triple::x86_64
|
|
|
|
? ELF::SHT_X86_64_UNWIND
|
|
|
|
: ELF::SHT_PROGBITS;
|
2015-11-06 13:35:35 +00:00
|
|
|
|
2012-02-17 17:31:15 +00:00
|
|
|
// Solaris requires different flags for .eh_frame to seemingly every other
|
|
|
|
// platform.
|
2015-11-06 15:30:45 +00:00
|
|
|
unsigned EHSectionFlags = ELF::SHF_ALLOC;
|
2015-11-06 13:35:35 +00:00
|
|
|
if (T.isOSSolaris() && T.getArch() != Triple::x86_64)
|
|
|
|
EHSectionFlags |= ELF::SHF_WRITE;
|
2012-02-17 17:31:15 +00:00
|
|
|
|
2011-07-20 05:58:47 +00:00
|
|
|
// ELF
|
2015-01-29 17:33:21 +00:00
|
|
|
BSSSection = Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
|
|
|
|
ELF::SHF_WRITE | ELF::SHF_ALLOC);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
2015-01-29 17:33:21 +00:00
|
|
|
TextSection = Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_EXECINSTR | ELF::SHF_ALLOC);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
2015-01-29 17:33:21 +00:00
|
|
|
DataSection = Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_WRITE | ELF::SHF_ALLOC);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
ReadOnlySection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
TLSDataSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
|
|
|
|
|
|
|
|
TLSBSSSection = Ctx->getELFSection(
|
|
|
|
".tbss", ELF::SHT_NOBITS, ELF::SHF_ALLOC | ELF::SHF_TLS | ELF::SHF_WRITE);
|
|
|
|
|
|
|
|
DataRelROSection = Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_WRITE);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
MergeableConst4Section =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_MERGE, 4, "");
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
MergeableConst8Section =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_MERGE, 8, "");
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
MergeableConst16Section =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_MERGE, 16, "");
|
2011-07-20 05:58:47 +00:00
|
|
|
|
2016-02-22 22:23:11 +00:00
|
|
|
MergeableConst32Section =
|
|
|
|
Ctx->getELFSection(".rodata.cst32", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_MERGE, 32, "");
|
|
|
|
|
2015-01-29 17:33:21 +00:00
|
|
|
StaticCtorSection = Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_WRITE);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
2015-01-29 17:33:21 +00:00
|
|
|
StaticDtorSection = Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC | ELF::SHF_WRITE);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
// Exception Handling Sections.
|
|
|
|
|
|
|
|
// FIXME: We're emitting LSDA info into a readonly section on ELF, even though
|
|
|
|
// it contains relocatable pointers. In PIC mode, this is probably a big
|
|
|
|
// runtime hit for C++ apps. Either the contents of the LSDA need to be
|
|
|
|
// adjusted or this should be a data section.
|
2015-01-29 17:33:21 +00:00
|
|
|
LSDASection = Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_ALLOC);
|
2011-07-20 05:58:47 +00:00
|
|
|
|
2014-04-13 04:57:38 +00:00
|
|
|
COFFDebugSymbolsSection = nullptr;
|
2016-01-29 18:16:43 +00:00
|
|
|
COFFDebugTypesSection = nullptr;
|
2014-01-30 01:39:17 +00:00
|
|
|
|
2011-07-20 05:58:47 +00:00
|
|
|
// Debug Info Sections.
|
2015-03-10 22:00:25 +00:00
|
|
|
DwarfAbbrevSection = Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
|
|
|
|
"section_abbrev");
|
|
|
|
DwarfInfoSection =
|
|
|
|
Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0, "section_info");
|
2015-03-11 04:20:31 +00:00
|
|
|
DwarfLineSection = Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0);
|
2015-01-29 17:33:21 +00:00
|
|
|
DwarfFrameSection = Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0);
|
2013-02-12 18:00:14 +00:00
|
|
|
DwarfPubNamesSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0);
|
2011-07-20 05:58:47 +00:00
|
|
|
DwarfPubTypesSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0);
|
2013-09-09 20:03:14 +00:00
|
|
|
DwarfGnuPubNamesSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".debug_gnu_pubnames", ELF::SHT_PROGBITS, 0);
|
2013-09-09 20:03:14 +00:00
|
|
|
DwarfGnuPubTypesSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".debug_gnu_pubtypes", ELF::SHT_PROGBITS, 0);
|
2015-03-11 04:20:31 +00:00
|
|
|
DwarfStrSection =
|
|
|
|
Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
|
|
|
|
DwarfLocSection = Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0);
|
2011-07-20 05:58:47 +00:00
|
|
|
DwarfARangesSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0);
|
2011-07-20 05:58:47 +00:00
|
|
|
DwarfRangesSection =
|
2015-03-10 22:00:25 +00:00
|
|
|
Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0, "debug_range");
|
2016-02-01 14:09:41 +00:00
|
|
|
DwarfMacinfoSection = Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS,
|
|
|
|
0, "debug_macinfo");
|
2012-11-28 02:49:34 +00:00
|
|
|
|
|
|
|
// DWARF5 Experimental Debug Info
|
|
|
|
|
|
|
|
// Accelerator Tables
|
2012-10-08 21:41:30 +00:00
|
|
|
DwarfAccelNamesSection =
|
2015-03-10 22:00:25 +00:00
|
|
|
Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0, "names_begin");
|
2012-10-08 21:41:30 +00:00
|
|
|
DwarfAccelObjCSection =
|
2015-03-10 22:00:25 +00:00
|
|
|
Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0, "objc_begin");
|
|
|
|
DwarfAccelNamespaceSection = Ctx->getELFSection(
|
|
|
|
".apple_namespaces", ELF::SHT_PROGBITS, 0, "namespac_begin");
|
2012-10-08 21:41:30 +00:00
|
|
|
DwarfAccelTypesSection =
|
2015-03-10 22:00:25 +00:00
|
|
|
Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0, "types_begin");
|
2012-11-28 02:49:38 +00:00
|
|
|
|
|
|
|
// Fission Sections
|
2015-03-11 04:20:31 +00:00
|
|
|
DwarfInfoDWOSection =
|
|
|
|
Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0);
|
|
|
|
DwarfTypesDWOSection =
|
|
|
|
Ctx->getELFSection(".debug_types.dwo", ELF::SHT_PROGBITS, 0);
|
|
|
|
DwarfAbbrevDWOSection =
|
|
|
|
Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0);
|
|
|
|
DwarfStrDWOSection =
|
|
|
|
Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
|
|
|
|
ELF::SHF_MERGE | ELF::SHF_STRINGS, 1, "");
|
2012-11-30 06:47:06 +00:00
|
|
|
DwarfLineDWOSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0);
|
2012-11-30 06:47:06 +00:00
|
|
|
DwarfLocDWOSection =
|
2015-03-10 22:00:25 +00:00
|
|
|
Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0, "skel_loc");
|
2013-01-04 17:59:22 +00:00
|
|
|
DwarfStrOffDWOSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0);
|
2015-03-10 22:00:25 +00:00
|
|
|
DwarfAddrSection =
|
|
|
|
Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0, "addr_sec");
|
2014-08-01 18:47:09 +00:00
|
|
|
|
2015-12-02 06:21:34 +00:00
|
|
|
// DWP Sections
|
|
|
|
DwarfCUIndexSection =
|
|
|
|
Ctx->getELFSection(".debug_cu_index", ELF::SHT_PROGBITS, 0);
|
2015-12-05 03:05:45 +00:00
|
|
|
DwarfTUIndexSection =
|
|
|
|
Ctx->getELFSection(".debug_tu_index", ELF::SHT_PROGBITS, 0);
|
2015-12-02 06:21:34 +00:00
|
|
|
|
2014-08-01 18:47:09 +00:00
|
|
|
StackMapSection =
|
2015-01-29 17:33:21 +00:00
|
|
|
Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
|
2015-06-15 18:44:08 +00:00
|
|
|
|
|
|
|
FaultMapSection =
|
|
|
|
Ctx->getELFSection(".llvm_faultmaps", ELF::SHT_PROGBITS, ELF::SHF_ALLOC);
|
2015-11-06 15:30:45 +00:00
|
|
|
|
|
|
|
EHFrameSection =
|
|
|
|
Ctx->getELFSection(".eh_frame", EHSectionType, EHSectionFlags);
|
2011-07-20 05:58:47 +00:00
|
|
|
}
|
|
|
|
|
2015-06-04 23:35:03 +00:00
|
|
|
void MCObjectFileInfo::initCOFFMCObjectFileInfo(Triple T) {
|
2015-11-06 15:30:45 +00:00
|
|
|
EHFrameSection = Ctx->getCOFFSection(
|
|
|
|
".eh_frame", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
|
2015-11-18 06:02:15 +00:00
|
|
|
SectionKind::getData());
|
2015-11-06 15:30:45 +00:00
|
|
|
|
2014-06-08 03:57:49 +00:00
|
|
|
bool IsWoA = T.getArch() == Triple::arm || T.getArch() == Triple::thumb;
|
|
|
|
|
2014-09-21 09:18:07 +00:00
|
|
|
CommDirectiveSupportsAlignment = true;
|
2014-04-08 22:33:40 +00:00
|
|
|
|
2011-07-20 05:58:47 +00:00
|
|
|
// COFF
|
2015-03-10 21:16:18 +00:00
|
|
|
BSSSection = Ctx->getCOFFSection(
|
|
|
|
".bss", COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
|
|
|
|
SectionKind::getBSS());
|
|
|
|
TextSection = Ctx->getCOFFSection(
|
|
|
|
".text",
|
|
|
|
(IsWoA ? COFF::IMAGE_SCN_MEM_16BIT : (COFF::SectionCharacteristics)0) |
|
|
|
|
COFF::IMAGE_SCN_CNT_CODE | COFF::IMAGE_SCN_MEM_EXECUTE |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getText());
|
|
|
|
DataSection = Ctx->getCOFFSection(
|
|
|
|
".data", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
|
|
|
|
COFF::IMAGE_SCN_MEM_WRITE,
|
2015-11-18 06:02:15 +00:00
|
|
|
SectionKind::getData());
|
2015-03-10 21:16:18 +00:00
|
|
|
ReadOnlySection = Ctx->getCOFFSection(
|
|
|
|
".rdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getReadOnly());
|
2014-06-08 00:34:23 +00:00
|
|
|
|
2014-06-08 00:34:27 +00:00
|
|
|
if (T.isKnownWindowsMSVCEnvironment() || T.isWindowsItaniumEnvironment()) {
|
2012-02-23 21:56:08 +00:00
|
|
|
StaticCtorSection =
|
2015-03-10 21:16:18 +00:00
|
|
|
Ctx->getCOFFSection(".CRT$XCU", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getReadOnly());
|
2014-06-08 00:34:23 +00:00
|
|
|
StaticDtorSection =
|
2015-03-10 21:16:18 +00:00
|
|
|
Ctx->getCOFFSection(".CRT$XTX", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getReadOnly());
|
2012-02-23 21:56:08 +00:00
|
|
|
} else {
|
2015-03-10 21:16:18 +00:00
|
|
|
StaticCtorSection = Ctx->getCOFFSection(
|
|
|
|
".ctors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
|
2015-11-18 06:02:15 +00:00
|
|
|
SectionKind::getData());
|
2015-03-10 21:16:18 +00:00
|
|
|
StaticDtorSection = Ctx->getCOFFSection(
|
|
|
|
".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ | COFF::IMAGE_SCN_MEM_WRITE,
|
2015-11-18 06:02:15 +00:00
|
|
|
SectionKind::getData());
|
2012-09-23 15:53:47 +00:00
|
|
|
}
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
// FIXME: We're emitting LSDA info into a readonly section on COFF, even
|
|
|
|
// though it contains relocatable pointers. In PIC mode, this is probably a
|
|
|
|
// big runtime hit for C++ apps. Either the contents of the LSDA need to be
|
|
|
|
// adjusted or this should be a data section.
|
2014-06-25 12:41:52 +00:00
|
|
|
if (T.getArch() == Triple::x86_64) {
|
|
|
|
// On Windows 64 with SEH, the LSDA is emitted into the .xdata section
|
2015-10-06 23:24:35 +00:00
|
|
|
LSDASection = nullptr;
|
2014-06-25 12:41:52 +00:00
|
|
|
} else {
|
|
|
|
LSDASection = Ctx->getCOFFSection(".gcc_except_table",
|
|
|
|
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getReadOnly());
|
|
|
|
}
|
2011-07-20 05:58:47 +00:00
|
|
|
|
|
|
|
// Debug info.
|
2014-01-28 03:48:44 +00:00
|
|
|
COFFDebugSymbolsSection =
|
2016-01-29 18:16:43 +00:00
|
|
|
Ctx->getCOFFSection(".debug$S", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
|
|
|
|
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ),
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
COFFDebugTypesSection =
|
|
|
|
Ctx->getCOFFSection(".debug$T", (COFF::IMAGE_SCN_MEM_DISCARDABLE |
|
|
|
|
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ),
|
2015-03-10 21:16:18 +00:00
|
|
|
SectionKind::getMetadata());
|
|
|
|
|
|
|
|
DwarfAbbrevSection = Ctx->getCOFFSection(
|
|
|
|
".debug_abbrev",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "section_abbrev");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfInfoSection = Ctx->getCOFFSection(
|
|
|
|
".debug_info",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "section_info");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfLineSection = Ctx->getCOFFSection(
|
|
|
|
".debug_line",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "section_line");
|
|
|
|
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfFrameSection = Ctx->getCOFFSection(
|
|
|
|
".debug_frame",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfPubNamesSection = Ctx->getCOFFSection(
|
|
|
|
".debug_pubnames",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfPubTypesSection = Ctx->getCOFFSection(
|
|
|
|
".debug_pubtypes",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfGnuPubNamesSection = Ctx->getCOFFSection(
|
|
|
|
".debug_gnu_pubnames",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfGnuPubTypesSection = Ctx->getCOFFSection(
|
|
|
|
".debug_gnu_pubtypes",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfStrSection = Ctx->getCOFFSection(
|
|
|
|
".debug_str",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "info_string");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfLocSection = Ctx->getCOFFSection(
|
|
|
|
".debug_loc",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "section_debug_loc");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfARangesSection = Ctx->getCOFFSection(
|
|
|
|
".debug_aranges",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfRangesSection = Ctx->getCOFFSection(
|
|
|
|
".debug_ranges",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "debug_range");
|
2016-01-07 14:28:20 +00:00
|
|
|
DwarfMacinfoSection = Ctx->getCOFFSection(
|
|
|
|
".debug_macinfo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2016-02-01 14:09:41 +00:00
|
|
|
SectionKind::getMetadata(), "debug_macinfo");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfInfoDWOSection = Ctx->getCOFFSection(
|
|
|
|
".debug_info.dwo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "section_info_dwo");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfTypesDWOSection = Ctx->getCOFFSection(
|
|
|
|
".debug_types.dwo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 23:06:32 +00:00
|
|
|
SectionKind::getMetadata(), "section_types_dwo");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfAbbrevDWOSection = Ctx->getCOFFSection(
|
|
|
|
".debug_abbrev.dwo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "section_abbrev_dwo");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfStrDWOSection = Ctx->getCOFFSection(
|
|
|
|
".debug_str.dwo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "skel_string");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfLineDWOSection = Ctx->getCOFFSection(
|
|
|
|
".debug_line.dwo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfLocDWOSection = Ctx->getCOFFSection(
|
|
|
|
".debug_loc.dwo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "skel_loc");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfStrOffDWOSection = Ctx->getCOFFSection(
|
|
|
|
".debug_str_offsets.dwo",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
DwarfAddrSection = Ctx->getCOFFSection(
|
|
|
|
".debug_addr",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "addr_sec");
|
2015-12-02 06:21:34 +00:00
|
|
|
DwarfCUIndexSection = Ctx->getCOFFSection(
|
|
|
|
".debug_cu_index",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
2015-12-05 03:05:45 +00:00
|
|
|
DwarfTUIndexSection = Ctx->getCOFFSection(
|
|
|
|
".debug_tu_index",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
|
|
|
SectionKind::getMetadata());
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfAccelNamesSection = Ctx->getCOFFSection(
|
|
|
|
".apple_names",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "names_begin");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfAccelNamespaceSection = Ctx->getCOFFSection(
|
|
|
|
".apple_namespaces",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "namespac_begin");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfAccelTypesSection = Ctx->getCOFFSection(
|
|
|
|
".apple_types",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "types_begin");
|
2015-03-10 21:16:18 +00:00
|
|
|
DwarfAccelObjCSection = Ctx->getCOFFSection(
|
|
|
|
".apple_objc",
|
|
|
|
COFF::IMAGE_SCN_MEM_DISCARDABLE | COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-03-10 22:00:25 +00:00
|
|
|
SectionKind::getMetadata(), "objc_begin");
|
2015-03-10 21:16:18 +00:00
|
|
|
|
|
|
|
DrectveSection = Ctx->getCOFFSection(
|
|
|
|
".drectve", COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
|
|
|
|
PDataSection = Ctx->getCOFFSection(
|
|
|
|
".pdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
|
2015-11-18 06:02:15 +00:00
|
|
|
SectionKind::getData());
|
2015-03-10 21:16:18 +00:00
|
|
|
|
|
|
|
XDataSection = Ctx->getCOFFSection(
|
|
|
|
".xdata", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
|
2015-11-18 06:02:15 +00:00
|
|
|
SectionKind::getData());
|
2015-03-10 21:16:18 +00:00
|
|
|
|
2015-05-30 04:56:02 +00:00
|
|
|
SXDataSection = Ctx->getCOFFSection(".sxdata", COFF::IMAGE_SCN_LNK_INFO,
|
|
|
|
SectionKind::getMetadata());
|
|
|
|
|
2015-03-10 21:16:18 +00:00
|
|
|
TLSDataSection = Ctx->getCOFFSection(
|
|
|
|
".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
|
|
|
|
COFF::IMAGE_SCN_MEM_WRITE,
|
2015-11-18 06:02:15 +00:00
|
|
|
SectionKind::getData());
|
2015-09-22 11:15:07 +00:00
|
|
|
|
2015-06-25 00:28:42 +00:00
|
|
|
StackMapSection = Ctx->getCOFFSection(".llvm_stackmaps",
|
|
|
|
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
|
|
|
COFF::IMAGE_SCN_MEM_READ,
|
2015-09-22 11:15:07 +00:00
|
|
|
SectionKind::getReadOnly());
|
2011-07-20 05:58:47 +00:00
|
|
|
}
|
|
|
|
|
2015-06-16 12:18:07 +00:00
|
|
|
void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,
|
|
|
|
Reloc::Model relocm,
|
2011-07-20 19:50:42 +00:00
|
|
|
CodeModel::Model cm,
|
2011-07-20 05:58:47 +00:00
|
|
|
MCContext &ctx) {
|
|
|
|
RelocM = relocm;
|
2011-07-20 19:50:42 +00:00
|
|
|
CMModel = cm;
|
2011-07-20 05:58:47 +00:00
|
|
|
Ctx = &ctx;
|
|
|
|
|
|
|
|
// Common.
|
|
|
|
CommDirectiveSupportsAlignment = true;
|
|
|
|
SupportsWeakOmittedEHFrame = true;
|
2014-03-29 09:03:13 +00:00
|
|
|
SupportsCompactUnwindWithoutEHFrame = false;
|
2015-10-28 22:56:36 +00:00
|
|
|
OmitDwarfIfHaveCompactUnwind = false;
|
2011-07-20 19:50:42 +00:00
|
|
|
|
2014-05-12 13:47:05 +00:00
|
|
|
PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
|
|
|
|
dwarf::DW_EH_PE_absptr;
|
2011-07-20 19:50:42 +00:00
|
|
|
|
2013-04-10 21:42:06 +00:00
|
|
|
CompactUnwindDwarfEHFrameOnly = 0;
|
|
|
|
|
2014-04-13 04:57:38 +00:00
|
|
|
EHFrameSection = nullptr; // Created on demand.
|
|
|
|
CompactUnwindSection = nullptr; // Used only by selected targets.
|
|
|
|
DwarfAccelNamesSection = nullptr; // Used only by selected targets.
|
|
|
|
DwarfAccelObjCSection = nullptr; // Used only by selected targets.
|
|
|
|
DwarfAccelNamespaceSection = nullptr; // Used only by selected targets.
|
|
|
|
DwarfAccelTypesSection = nullptr; // Used only by selected targets.
|
2011-07-20 05:58:47 +00:00
|
|
|
|
2015-06-16 12:18:07 +00:00
|
|
|
TT = TheTriple;
|
2014-06-22 22:25:01 +00:00
|
|
|
|
2015-12-22 01:39:04 +00:00
|
|
|
switch (TT.getObjectFormat()) {
|
|
|
|
case Triple::MachO:
|
2015-08-14 15:48:41 +00:00
|
|
|
Env = IsMachO;
|
2015-06-04 23:35:03 +00:00
|
|
|
initMachOMCObjectFileInfo(TT);
|
2015-12-22 01:39:04 +00:00
|
|
|
break;
|
|
|
|
case Triple::COFF:
|
|
|
|
if (!TT.isOSWindows())
|
|
|
|
report_fatal_error(
|
|
|
|
"Cannot initialize MC for non-Windows COFF object files.");
|
|
|
|
|
2015-08-14 15:48:41 +00:00
|
|
|
Env = IsCOFF;
|
2015-06-04 23:35:03 +00:00
|
|
|
initCOFFMCObjectFileInfo(TT);
|
2015-12-22 01:39:04 +00:00
|
|
|
break;
|
|
|
|
case Triple::ELF:
|
2015-08-14 15:48:41 +00:00
|
|
|
Env = IsELF;
|
2015-06-04 23:35:03 +00:00
|
|
|
initELFMCObjectFileInfo(TT);
|
2015-12-22 01:39:04 +00:00
|
|
|
break;
|
|
|
|
case Triple::UnknownObjectFormat:
|
|
|
|
report_fatal_error("Cannot initialize MC for unknown object file format.");
|
|
|
|
break;
|
2011-07-20 05:58:47 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-06-16 12:18:07 +00:00
|
|
|
void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model RM,
|
|
|
|
CodeModel::Model CM,
|
|
|
|
MCContext &ctx) {
|
|
|
|
InitMCObjectFileInfo(Triple(TT), RM, CM, ctx);
|
|
|
|
}
|
|
|
|
|
2015-05-21 19:20:38 +00:00
|
|
|
MCSection *MCObjectFileInfo::getDwarfTypesSection(uint64_t Hash) const {
|
2013-12-13 21:33:40 +00:00
|
|
|
return Ctx->getELFSection(".debug_types", ELF::SHT_PROGBITS, ELF::SHF_GROUP,
|
2015-01-29 17:33:21 +00:00
|
|
|
0, utostr(Hash));
|
2013-12-13 21:33:40 +00:00
|
|
|
}
|