mirror of
https://github.com/c64scene-ar/llvm-6502.git
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Add MCObjectFileInfo and sink the MCSections initialization code from
TargetLoweringObjectFileImpl down to MCObjectFileInfo. TargetAsmInfo is done to one last method. It's *almost* gone! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135569 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
500
lib/MC/MCObjectFileInfo.cpp
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500
lib/MC/MCObjectFileInfo.cpp
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@ -0,0 +1,500 @@
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//===-- MObjectFileInfo.cpp - Object File Information ---------------------===//
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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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#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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#include "llvm/ADT/Triple.h"
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using namespace llvm;
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void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
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// MachO
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IsFunctionEHFrameSymbolPrivate = false;
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SupportsWeakOmittedEHFrame = false;
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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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MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
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SectionKind::getText());
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DataSection // .data
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= Ctx->getMachOSection("__DATA", "__data", 0,
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SectionKind::getDataRel());
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TLSDataSection // .tdata
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= Ctx->getMachOSection("__DATA", "__thread_data",
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MCSectionMachO::S_THREAD_LOCAL_REGULAR,
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SectionKind::getDataRel());
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TLSBSSSection // .tbss
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= Ctx->getMachOSection("__DATA", "__thread_bss",
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MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
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SectionKind::getThreadBSS());
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// TODO: Verify datarel below.
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TLSTLVSection // .tlv
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= Ctx->getMachOSection("__DATA", "__thread_vars",
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MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
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SectionKind::getDataRel());
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TLSThreadInitSection
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= Ctx->getMachOSection("__DATA", "__thread_init",
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MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
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SectionKind::getDataRel());
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CStringSection // .cstring
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= Ctx->getMachOSection("__TEXT", "__cstring",
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MCSectionMachO::S_CSTRING_LITERALS,
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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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MCSectionMachO::S_4BYTE_LITERALS,
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SectionKind::getMergeableConst4());
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EightByteConstantSection // .literal8
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= Ctx->getMachOSection("__TEXT", "__literal8",
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MCSectionMachO::S_8BYTE_LITERALS,
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SectionKind::getMergeableConst8());
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// ld_classic doesn't support .literal16 in 32-bit mode, and ld64 falls back
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// to using it in -static mode.
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SixteenByteConstantSection = 0;
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if (RelocM != Reloc::Static &&
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T.getArch() != Triple::x86_64 && T.getArch() != Triple::ppc64)
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SixteenByteConstantSection = // .literal16
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Ctx->getMachOSection("__TEXT", "__literal16",
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MCSectionMachO::S_16BYTE_LITERALS,
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SectionKind::getMergeableConst16());
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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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TextCoalSection
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= Ctx->getMachOSection("__TEXT", "__textcoal_nt",
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MCSectionMachO::S_COALESCED |
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MCSectionMachO::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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MCSectionMachO::S_COALESCED,
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SectionKind::getReadOnly());
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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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DataCoalSection
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= Ctx->getMachOSection("__DATA","__datacoal_nt",
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MCSectionMachO::S_COALESCED,
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SectionKind::getDataRel());
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DataCommonSection
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= Ctx->getMachOSection("__DATA","__common",
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MCSectionMachO::S_ZEROFILL,
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SectionKind::getBSS());
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DataBSSSection
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= Ctx->getMachOSection("__DATA","__bss", MCSectionMachO::S_ZEROFILL,
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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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MCSectionMachO::S_LAZY_SYMBOL_POINTERS,
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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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MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS,
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SectionKind::getMetadata());
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if (RelocM == Reloc::Static) {
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StaticCtorSection
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= Ctx->getMachOSection("__TEXT", "__constructor", 0,
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SectionKind::getDataRel());
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StaticDtorSection
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= Ctx->getMachOSection("__TEXT", "__destructor", 0,
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SectionKind::getDataRel());
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} else {
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StaticCtorSection
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= Ctx->getMachOSection("__DATA", "__mod_init_func",
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MCSectionMachO::S_MOD_INIT_FUNC_POINTERS,
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SectionKind::getDataRel());
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StaticDtorSection
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= Ctx->getMachOSection("__DATA", "__mod_term_func",
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MCSectionMachO::S_MOD_TERM_FUNC_POINTERS,
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SectionKind::getDataRel());
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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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if (T.isMacOSX() && !T.isMacOSXVersionLT(10, 6))
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CompactUnwindSection =
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Ctx->getMachOSection("__LD", "__compact_unwind",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getReadOnly());
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// Debug Information.
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DwarfAbbrevSection =
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Ctx->getMachOSection("__DWARF", "__debug_abbrev",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfInfoSection =
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Ctx->getMachOSection("__DWARF", "__debug_info",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfLineSection =
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Ctx->getMachOSection("__DWARF", "__debug_line",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfFrameSection =
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Ctx->getMachOSection("__DWARF", "__debug_frame",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfPubNamesSection =
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Ctx->getMachOSection("__DWARF", "__debug_pubnames",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfPubTypesSection =
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Ctx->getMachOSection("__DWARF", "__debug_pubtypes",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfStrSection =
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Ctx->getMachOSection("__DWARF", "__debug_str",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfLocSection =
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Ctx->getMachOSection("__DWARF", "__debug_loc",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfARangesSection =
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Ctx->getMachOSection("__DWARF", "__debug_aranges",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfRangesSection =
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Ctx->getMachOSection("__DWARF", "__debug_ranges",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfMacroInfoSection =
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Ctx->getMachOSection("__DWARF", "__debug_macinfo",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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DwarfDebugInlineSection =
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Ctx->getMachOSection("__DWARF", "__debug_inlined",
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MCSectionMachO::S_ATTR_DEBUG,
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SectionKind::getMetadata());
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TLSExtraDataSection = TLSTLVSection;
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}
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void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
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// ELF
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BSSSection =
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Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
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ELF::SHF_WRITE |ELF::SHF_ALLOC,
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SectionKind::getBSS());
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TextSection =
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Ctx->getELFSection(".text", ELF::SHT_PROGBITS,
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ELF::SHF_EXECINSTR |
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ELF::SHF_ALLOC,
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SectionKind::getText());
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DataSection =
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Ctx->getELFSection(".data", ELF::SHT_PROGBITS,
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ELF::SHF_WRITE |ELF::SHF_ALLOC,
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SectionKind::getDataRel());
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ReadOnlySection =
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Ctx->getELFSection(".rodata", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC,
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SectionKind::getReadOnly());
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TLSDataSection =
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Ctx->getELFSection(".tdata", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC | ELF::SHF_TLS |
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ELF::SHF_WRITE,
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SectionKind::getThreadData());
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TLSBSSSection =
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Ctx->getELFSection(".tbss", ELF::SHT_NOBITS,
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ELF::SHF_ALLOC | ELF::SHF_TLS |
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ELF::SHF_WRITE,
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SectionKind::getThreadBSS());
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DataRelSection =
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Ctx->getELFSection(".data.rel", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_WRITE,
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SectionKind::getDataRel());
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DataRelLocalSection =
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Ctx->getELFSection(".data.rel.local", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_WRITE,
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SectionKind::getDataRelLocal());
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DataRelROSection =
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Ctx->getELFSection(".data.rel.ro", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_WRITE,
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SectionKind::getReadOnlyWithRel());
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DataRelROLocalSection =
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Ctx->getELFSection(".data.rel.ro.local", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_WRITE,
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SectionKind::getReadOnlyWithRelLocal());
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MergeableConst4Section =
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Ctx->getELFSection(".rodata.cst4", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_MERGE,
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SectionKind::getMergeableConst4());
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MergeableConst8Section =
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Ctx->getELFSection(".rodata.cst8", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_MERGE,
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SectionKind::getMergeableConst8());
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MergeableConst16Section =
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Ctx->getELFSection(".rodata.cst16", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_MERGE,
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SectionKind::getMergeableConst16());
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StaticCtorSection =
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Ctx->getELFSection(".ctors", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_WRITE,
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SectionKind::getDataRel());
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StaticDtorSection =
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Ctx->getELFSection(".dtors", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC |ELF::SHF_WRITE,
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SectionKind::getDataRel());
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// Exception Handling Sections.
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// FIXME: We're emitting LSDA info into a readonly section on ELF, even though
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// it contains relocatable pointers. In PIC mode, this is probably a big
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// runtime hit for C++ apps. Either the contents of the LSDA need to be
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// adjusted or this should be a data section.
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LSDASection =
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Ctx->getELFSection(".gcc_except_table", ELF::SHT_PROGBITS,
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ELF::SHF_ALLOC,
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SectionKind::getReadOnly());
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// Debug Info Sections.
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DwarfAbbrevSection =
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Ctx->getELFSection(".debug_abbrev", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfInfoSection =
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Ctx->getELFSection(".debug_info", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfLineSection =
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Ctx->getELFSection(".debug_line", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfFrameSection =
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Ctx->getELFSection(".debug_frame", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfPubNamesSection =
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Ctx->getELFSection(".debug_pubnames", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfPubTypesSection =
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Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfStrSection =
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Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfLocSection =
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Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfARangesSection =
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Ctx->getELFSection(".debug_aranges", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfRangesSection =
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Ctx->getELFSection(".debug_ranges", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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DwarfMacroInfoSection =
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Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
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SectionKind::getMetadata());
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}
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void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
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// COFF
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TextSection =
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Ctx->getCOFFSection(".text",
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COFF::IMAGE_SCN_CNT_CODE |
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COFF::IMAGE_SCN_MEM_EXECUTE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getText());
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DataSection =
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Ctx->getCOFFSection(".data",
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COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
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COFF::IMAGE_SCN_MEM_READ |
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COFF::IMAGE_SCN_MEM_WRITE,
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SectionKind::getDataRel());
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ReadOnlySection =
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Ctx->getCOFFSection(".rdata",
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COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getReadOnly());
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StaticCtorSection =
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Ctx->getCOFFSection(".ctors",
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COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
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COFF::IMAGE_SCN_MEM_READ |
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COFF::IMAGE_SCN_MEM_WRITE,
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SectionKind::getDataRel());
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StaticDtorSection =
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Ctx->getCOFFSection(".dtors",
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COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
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COFF::IMAGE_SCN_MEM_READ |
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COFF::IMAGE_SCN_MEM_WRITE,
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SectionKind::getDataRel());
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// FIXME: We're emitting LSDA info into a readonly section on COFF, even
|
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// though it contains relocatable pointers. In PIC mode, this is probably a
|
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// big runtime hit for C++ apps. Either the contents of the LSDA need to be
|
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// adjusted or this should be a data section.
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LSDASection =
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Ctx->getCOFFSection(".gcc_except_table",
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COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getReadOnly());
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// Debug info.
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DwarfAbbrevSection =
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Ctx->getCOFFSection(".debug_abbrev",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfInfoSection =
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Ctx->getCOFFSection(".debug_info",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfLineSection =
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Ctx->getCOFFSection(".debug_line",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfFrameSection =
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Ctx->getCOFFSection(".debug_frame",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfPubNamesSection =
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Ctx->getCOFFSection(".debug_pubnames",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfPubTypesSection =
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Ctx->getCOFFSection(".debug_pubtypes",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfStrSection =
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Ctx->getCOFFSection(".debug_str",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfLocSection =
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Ctx->getCOFFSection(".debug_loc",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
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SectionKind::getMetadata());
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DwarfARangesSection =
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Ctx->getCOFFSection(".debug_aranges",
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COFF::IMAGE_SCN_MEM_DISCARDABLE |
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COFF::IMAGE_SCN_MEM_READ,
|
||||
SectionKind::getMetadata());
|
||||
DwarfRangesSection =
|
||||
Ctx->getCOFFSection(".debug_ranges",
|
||||
COFF::IMAGE_SCN_MEM_DISCARDABLE |
|
||||
COFF::IMAGE_SCN_MEM_READ,
|
||||
SectionKind::getMetadata());
|
||||
DwarfMacroInfoSection =
|
||||
Ctx->getCOFFSection(".debug_macinfo",
|
||||
COFF::IMAGE_SCN_MEM_DISCARDABLE |
|
||||
COFF::IMAGE_SCN_MEM_READ,
|
||||
SectionKind::getMetadata());
|
||||
|
||||
DrectveSection =
|
||||
Ctx->getCOFFSection(".drectve",
|
||||
COFF::IMAGE_SCN_LNK_INFO,
|
||||
SectionKind::getMetadata());
|
||||
|
||||
PDataSection =
|
||||
Ctx->getCOFFSection(".pdata",
|
||||
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
||||
COFF::IMAGE_SCN_MEM_READ |
|
||||
COFF::IMAGE_SCN_MEM_WRITE,
|
||||
SectionKind::getDataRel());
|
||||
|
||||
XDataSection =
|
||||
Ctx->getCOFFSection(".xdata",
|
||||
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
||||
COFF::IMAGE_SCN_MEM_READ |
|
||||
COFF::IMAGE_SCN_MEM_WRITE,
|
||||
SectionKind::getDataRel());
|
||||
}
|
||||
|
||||
void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
|
||||
MCContext &ctx) {
|
||||
RelocM = relocm;
|
||||
Ctx = &ctx;
|
||||
|
||||
// Common.
|
||||
CommDirectiveSupportsAlignment = true;
|
||||
SupportsWeakOmittedEHFrame = true;
|
||||
IsFunctionEHFrameSymbolPrivate = true;
|
||||
|
||||
Triple T(TT);
|
||||
Triple::ArchType Arch = T.getArch();
|
||||
// FIXME: Checking for Arch here to filter out bogus triples such as
|
||||
// cellspu-apple-darwin. Perhaps we should fix in Triple?
|
||||
if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
|
||||
Arch == Triple::arm || Arch == Triple::thumb ||
|
||||
Arch == Triple::ppc || Arch == Triple::ppc64 ||
|
||||
Arch == Triple::UnknownArch) &&
|
||||
(T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) {
|
||||
Env = IsMachO;
|
||||
InitMachOMCObjectFileInfo(T);
|
||||
} else if (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin ||
|
||||
T.getOS() == Triple::Win32) {
|
||||
Env = IsCOFF;
|
||||
InitCOFFMCObjectFileInfo(T);
|
||||
} else {
|
||||
Env = IsELF;
|
||||
InitELFMCObjectFileInfo(T);
|
||||
}
|
||||
}
|
||||
|
||||
void MCObjectFileInfo::InitEHFrameSection() {
|
||||
if (Env == IsMachO)
|
||||
EHFrameSection =
|
||||
Ctx->getMachOSection("__TEXT", "__eh_frame",
|
||||
MCSectionMachO::S_COALESCED |
|
||||
MCSectionMachO::S_ATTR_NO_TOC |
|
||||
MCSectionMachO::S_ATTR_STRIP_STATIC_SYMS |
|
||||
MCSectionMachO::S_ATTR_LIVE_SUPPORT,
|
||||
SectionKind::getReadOnly());
|
||||
else if (Env == IsELF)
|
||||
EHFrameSection =
|
||||
Ctx->getELFSection(".eh_frame", ELF::SHT_PROGBITS,
|
||||
ELF::SHF_ALLOC,
|
||||
SectionKind::getDataRel());
|
||||
else
|
||||
EHFrameSection =
|
||||
Ctx->getCOFFSection(".eh_frame",
|
||||
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
|
||||
COFF::IMAGE_SCN_MEM_READ |
|
||||
COFF::IMAGE_SCN_MEM_WRITE,
|
||||
SectionKind::getDataRel());
|
||||
}
|
||||
Reference in New Issue
Block a user