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-rw-r--r--lib/MC/MCObjectFileInfo.cpp111
1 files changed, 65 insertions, 46 deletions
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp
index 3b011c8..9d413af 100644
--- a/lib/MC/MCObjectFileInfo.cpp
+++ b/lib/MC/MCObjectFileInfo.cpp
@@ -10,6 +10,7 @@
#include "llvm/MC/MCObjectFileInfo.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCSection.h"
#include "llvm/MC/MCSectionCOFF.h"
@@ -22,12 +23,13 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
IsFunctionEHFrameSymbolPrivate = false;
SupportsWeakOmittedEHFrame = false;
- if (T.isOSDarwin() && T.getArch() == Triple::arm64)
+ if (T.isOSDarwin() &&
+ (T.getArch() == Triple::arm64 || T.getArch() == Triple::aarch64))
SupportsCompactUnwindWithoutEHFrame = true;
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
| dwarf::DW_EH_PE_sdata4;
- LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
+ LSDAEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
dwarf::DW_EH_PE_sdata4;
@@ -44,7 +46,7 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
SectionKind::getDataRel());
// BSSSection might not be expected initialized on msvc.
- BSSSection = 0;
+ BSSSection = nullptr;
TLSDataSection // .tdata
= Ctx->getMachOSection("__DATA", "__thread_data",
@@ -147,10 +149,11 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
LSDASection = Ctx->getMachOSection("__TEXT", "__gcc_except_tab", 0,
SectionKind::getReadOnlyWithRel());
- COFFDebugSymbolsSection = 0;
+ COFFDebugSymbolsSection = nullptr;
if ((T.isMacOSX() && !T.isMacOSXVersionLT(10, 6)) ||
- (T.isOSDarwin() && T.getArch() == Triple::arm64)) {
+ (T.isOSDarwin() &&
+ (T.getArch() == Triple::arm64 || T.getArch() == Triple::aarch64))) {
CompactUnwindSection =
Ctx->getMachOSection("__LD", "__compact_unwind",
MachO::S_ATTR_DEBUG,
@@ -158,7 +161,7 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
if (T.getArch() == Triple::x86_64 || T.getArch() == Triple::x86)
CompactUnwindDwarfEHFrameOnly = 0x04000000;
- else if (T.getArch() == Triple::arm64)
+ else if (T.getArch() == Triple::arm64 || T.getArch() == Triple::aarch64)
CompactUnwindDwarfEHFrameOnly = 0x03000000;
}
@@ -245,29 +248,40 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
}
void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
- if (T.getArch() == Triple::mips ||
- T.getArch() == Triple::mipsel)
+ switch (T.getArch()) {
+ case Triple::mips:
+ case Triple::mipsel:
FDECFIEncoding = dwarf::DW_EH_PE_sdata4;
- else if (T.getArch() == Triple::mips64 ||
- T.getArch() == Triple::mips64el)
+ break;
+ case Triple::mips64:
+ case Triple::mips64el:
FDECFIEncoding = dwarf::DW_EH_PE_sdata8;
- else
+ break;
+ default:
FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+ break;
+ }
- if (T.getArch() == Triple::x86) {
+ switch (T.getArch()) {
+ case Triple::arm:
+ case Triple::armeb:
+ case Triple::thumb:
+ case Triple::thumbeb:
+ if (Ctx->getAsmInfo()->getExceptionHandlingType() == ExceptionHandling::ARM)
+ break;
+ // Fallthrough if not using EHABI
+ case 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 = (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) {
+ break;
+ case Triple::x86_64:
if (RelocM == Reloc::PIC_) {
PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
@@ -275,7 +289,6 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
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);
@@ -285,12 +298,14 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
? 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 ||
- T.getArch() == Triple::aarch64_be ) {
+ break;
+ case Triple::aarch64:
+ case Triple::aarch64_be:
+ case Triple::arm64:
+ case Triple::arm64_be:
// 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.
@@ -298,65 +313,64 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
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 || T.getArch() == Triple::ppc64le) {
+ break;
+ case Triple::ppc64:
+ case Triple::ppc64le:
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;
- 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;
- } else if (T.getArch() == Triple::sparc) {
+ break;
+ case Triple::sparc:
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;
- 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_sdata4;
} else {
LSDAEncoding = dwarf::DW_EH_PE_absptr;
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
- FDEEncoding = dwarf::DW_EH_PE_udata4;
TTypeEncoding = dwarf::DW_EH_PE_absptr;
}
- } else if (T.getArch() == Triple::sparcv9) {
+ break;
+ case Triple::sparcv9:
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;
- 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_sdata4;
} else {
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
- FDEEncoding = dwarf::DW_EH_PE_udata4;
TTypeEncoding = dwarf::DW_EH_PE_absptr;
}
- } else if (T.getArch() == Triple::systemz) {
+ break;
+ case Triple::systemz:
// All currently-defined code models guarantee that 4-byte PC-relative
// values will be in range.
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;
- 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_sdata4;
} else {
PersonalityEncoding = dwarf::DW_EH_PE_absptr;
LSDAEncoding = dwarf::DW_EH_PE_absptr;
- FDEEncoding = dwarf::DW_EH_PE_absptr;
TTypeEncoding = dwarf::DW_EH_PE_absptr;
}
+ break;
+ default:
+ break;
}
// Solaris requires different flags for .eh_frame to seemingly every other
@@ -461,7 +475,7 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
ELF::SHF_ALLOC,
SectionKind::getReadOnly());
- COFFDebugSymbolsSection = 0;
+ COFFDebugSymbolsSection = nullptr;
// Debug Info Sections.
DwarfAbbrevSection =
@@ -548,6 +562,10 @@ void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
+ // The object file format cannot represent common symbols with explicit
+ // alignments.
+ CommDirectiveSupportsAlignment = false;
+
// COFF
BSSSection =
Ctx->getCOFFSection(".bss",
@@ -716,7 +734,7 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
DrectveSection =
Ctx->getCOFFSection(".drectve",
- COFF::IMAGE_SCN_LNK_INFO,
+ COFF::IMAGE_SCN_LNK_INFO | COFF::IMAGE_SCN_LNK_REMOVE,
SectionKind::getMetadata());
PDataSection =
@@ -751,17 +769,17 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
IsFunctionEHFrameSymbolPrivate = true;
SupportsCompactUnwindWithoutEHFrame = false;
- PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
- TTypeEncoding = dwarf::DW_EH_PE_absptr;
+ PersonalityEncoding = LSDAEncoding = FDECFIEncoding = TTypeEncoding =
+ dwarf::DW_EH_PE_absptr;
CompactUnwindDwarfEHFrameOnly = 0;
- 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.
+ 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.
Triple T(TT);
Triple::ArchType Arch = T.getArch();
@@ -769,14 +787,15 @@ void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
// 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::arm64 ||
+ Arch == Triple::arm64 || Arch == Triple::aarch64 ||
Arch == Triple::ppc || Arch == Triple::ppc64 ||
Arch == Triple::UnknownArch) &&
(T.isOSDarwin() || T.isOSBinFormatMachO())) {
Env = IsMachO;
InitMachOMCObjectFileInfo(T);
- } else if ((Arch == Triple::x86 || Arch == Triple::x86_64) &&
- T.getObjectFormat() != Triple::ELF && T.isOSWindows()) {
+ } else if ((Arch == Triple::x86 || Arch == Triple::x86_64 ||
+ Arch == Triple::arm || Arch == Triple::thumb) &&
+ (T.isOSWindows() && T.getObjectFormat() == Triple::COFF)) {
Env = IsCOFF;
InitCOFFMCObjectFileInfo(T);
} else {
generated by cgit v1.1 at 2024-12-22 14:29:42 +0000