//===----------------------------------------------------------------------===//
#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/ADT/Triple.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionMachO.h"
-#include "llvm/ADT/Triple.h"
using namespace llvm;
void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
IsFunctionEHFrameSymbolPrivate = false;
SupportsWeakOmittedEHFrame = false;
+ PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
+ | dwarf::DW_EH_PE_sdata4;
+ LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
+ TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+ dwarf::DW_EH_PE_sdata4;
+
// .comm doesn't support alignment before Leopard.
if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
CommDirectiveSupportsAlignment = false;
TLSThreadInitSection
= Ctx->getMachOSection("__DATA", "__thread_init",
- MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
- SectionKind::getDataRel());
+ MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
+ SectionKind::getDataRel());
CStringSection // .cstring
= Ctx->getMachOSection("__TEXT", "__cstring",
SectionKind::getReadOnly());
// Debug Information.
+ DwarfAccelNamesSection =
+ Ctx->getMachOSection("__DWARF", "__apple_names",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ DwarfAccelObjCSection =
+ Ctx->getMachOSection("__DWARF", "__apple_objc",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ // 16 character section limit...
+ DwarfAccelNamespaceSection =
+ Ctx->getMachOSection("__DWARF", "__apple_namespac",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+ DwarfAccelTypesSection =
+ Ctx->getMachOSection("__DWARF", "__apple_types",
+ MCSectionMachO::S_ATTR_DEBUG,
+ SectionKind::getMetadata());
+
DwarfAbbrevSection =
Ctx->getMachOSection("__DWARF", "__debug_abbrev",
MCSectionMachO::S_ATTR_DEBUG,
}
void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
+ if (T.getArch() == Triple::x86) {
+ PersonalityEncoding = (RelocM == Reloc::PIC_)
+ ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+ : dwarf::DW_EH_PE_absptr;
+ LSDAEncoding = (RelocM == Reloc::PIC_)
+ ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+ : dwarf::DW_EH_PE_absptr;
+ FDEEncoding = FDECFIEncoding = (RelocM == Reloc::PIC_)
+ ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+ : dwarf::DW_EH_PE_absptr;
+ TTypeEncoding = (RelocM == Reloc::PIC_)
+ ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+ : dwarf::DW_EH_PE_absptr;
+ } else if (T.getArch() == Triple::x86_64) {
+ FDECFIEncoding = 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 |
+ ((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);
+ FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+ 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;
+ FDEEncoding = dwarf::DW_EH_PE_udata4;
+ TTypeEncoding = (CMModel == CodeModel::Small)
+ ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+ }
+ } else if (T.getArch() == Triple::aarch64) {
+ FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+
+ // 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;
+ FDEEncoding = 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_sdata8;
+ } else {
+ PersonalityEncoding = dwarf::DW_EH_PE_absptr;
+ LSDAEncoding = dwarf::DW_EH_PE_absptr;
+ FDEEncoding = dwarf::DW_EH_PE_udata4;
+ TTypeEncoding = dwarf::DW_EH_PE_absptr;
+ }
+ } else if (T.getArch() == Triple::ppc64) {
+ PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+ dwarf::DW_EH_PE_udata8;
+ FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+ LSDAEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8;
+ FDEEncoding = 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;
+ }
+
+ // Solaris requires different flags for .eh_frame to seemingly every other
+ // platform.
+ EHSectionType = ELF::SHT_PROGBITS;
+ EHSectionFlags = ELF::SHF_ALLOC;
+ if (T.getOS() == Triple::Solaris) {
+ if (T.getArch() == Triple::x86_64)
+ EHSectionType = ELF::SHT_X86_64_UNWIND;
+ else
+ EHSectionFlags |= ELF::SHF_WRITE;
+ }
+
+
// ELF
BSSSection =
Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
- ELF::SHF_WRITE |ELF::SHF_ALLOC,
+ ELF::SHF_WRITE | ELF::SHF_ALLOC,
SectionKind::getBSS());
TextSection =
Ctx->getELFSection(".debug_pubtypes", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfStrSection =
- Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS, 0,
- SectionKind::getMetadata());
+ Ctx->getELFSection(".debug_str", ELF::SHT_PROGBITS,
+ ELF::SHF_MERGE | ELF::SHF_STRINGS,
+ SectionKind::getMergeable1ByteCString());
DwarfLocSection =
Ctx->getELFSection(".debug_loc", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
DwarfMacroInfoSection =
Ctx->getELFSection(".debug_macinfo", ELF::SHT_PROGBITS, 0,
SectionKind::getMetadata());
+
+ // DWARF5 Experimental Debug Info
+
+ // Accelerator Tables
+ DwarfAccelNamesSection =
+ Ctx->getELFSection(".apple_names", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfAccelObjCSection =
+ Ctx->getELFSection(".apple_objc", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfAccelNamespaceSection =
+ Ctx->getELFSection(".apple_namespaces", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfAccelTypesSection =
+ Ctx->getELFSection(".apple_types", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+
+ // Fission Sections
+ DwarfInfoDWOSection =
+ Ctx->getELFSection(".debug_info.dwo", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfAbbrevDWOSection =
+ Ctx->getELFSection(".debug_abbrev.dwo", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfStrDWOSection =
+ Ctx->getELFSection(".debug_str.dwo", ELF::SHT_PROGBITS,
+ ELF::SHF_MERGE | ELF::SHF_STRINGS,
+ SectionKind::getMergeable1ByteCString());
+ DwarfLineDWOSection =
+ Ctx->getELFSection(".debug_line.dwo", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfLocDWOSection =
+ Ctx->getELFSection(".debug_loc.dwo", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfStrOffDWOSection =
+ Ctx->getELFSection(".debug_str_offsets.dwo", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
+ DwarfAddrSection =
+ Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
+ SectionKind::getMetadata());
}
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ,
SectionKind::getReadOnly());
- StaticCtorSection =
- Ctx->getCOFFSection(".ctors",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
- StaticDtorSection =
- Ctx->getCOFFSection(".dtors",
- COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
- SectionKind::getDataRel());
+ if (T.getOS() == Triple::Win32) {
+ StaticCtorSection =
+ Ctx->getCOFFSection(".CRT$XCU",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getReadOnly());
+ } else {
+ StaticCtorSection =
+ Ctx->getCOFFSection(".ctors",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ |
+ COFF::IMAGE_SCN_MEM_WRITE,
+ SectionKind::getDataRel());
+ }
+
+
+ if (T.getOS() == Triple::Win32) {
+ StaticDtorSection =
+ Ctx->getCOFFSection(".CRT$XTX",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getReadOnly());
+ } else {
+ StaticDtorSection =
+ Ctx->getCOFFSection(".dtors",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ |
+ COFF::IMAGE_SCN_MEM_WRITE,
+ SectionKind::getDataRel());
+ }
// 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
PDataSection =
Ctx->getCOFFSection(".pdata",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
- COFF::IMAGE_SCN_MEM_READ |
- COFF::IMAGE_SCN_MEM_WRITE,
+ COFF::IMAGE_SCN_MEM_READ,
SectionKind::getDataRel());
XDataSection =
Ctx->getCOFFSection(".xdata",
+ COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+ COFF::IMAGE_SCN_MEM_READ,
+ SectionKind::getDataRel());
+ TLSDataSection =
+ Ctx->getCOFFSection(".tls$",
COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_MEM_WRITE,
}
void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
+ CodeModel::Model cm,
MCContext &ctx) {
RelocM = relocm;
+ CMModel = cm;
Ctx = &ctx;
// Common.
CommDirectiveSupportsAlignment = true;
SupportsWeakOmittedEHFrame = true;
IsFunctionEHFrameSymbolPrivate = true;
- EHFrameSection = 0;
+
+ PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
+ TTypeEncoding = dwarf::DW_EH_PE_absptr;
+
+ EHFrameSection = 0; // Created on demand.
+ CompactUnwindSection = 0; // Used only by selected targets.
+ DwarfAccelNamesSection = 0; // Used only by selected targets.
+ DwarfAccelObjCSection = 0; // Used only by selected targets.
+ DwarfAccelNamespaceSection = 0; // Used only by selected targets.
+ DwarfAccelTypesSection = 0; // Used only by selected targets.
Triple T(TT);
Triple::ArchType Arch = T.getArch();
(T.isOSDarwin() || T.getEnvironment() == Triple::MachO)) {
Env = IsMachO;
InitMachOMCObjectFileInfo(T);
- } else if (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin ||
- T.getOS() == Triple::Win32) {
+ } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) &&
+ (T.getEnvironment() != Triple::ELF) &&
+ (T.getOS() == Triple::MinGW32 || T.getOS() == Triple::Cygwin ||
+ T.getOS() == Triple::Win32)) {
Env = IsCOFF;
InitCOFFMCObjectFileInfo(T);
} else {
SectionKind::getReadOnly());
else if (Env == IsELF)
EHFrameSection =
- Ctx->getELFSection(".eh_frame", ELF::SHT_PROGBITS,
- ELF::SHF_ALLOC,
+ Ctx->getELFSection(".eh_frame", EHSectionType,
+ EHSectionFlags,
SectionKind::getDataRel());
else
EHFrameSection =
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