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Add some section and constant support for darwin TLS.

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llvm-svn: 103974
This commit is contained in:
Eric Christopher 2010-05-17 21:02:07 +00:00
parent bb0a4fbe13
commit 380e16a725
5 changed files with 51 additions and 4 deletions
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13
include/llvm/CodeGen/TargetLoweringObjectFileImpl.h
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@ -84,6 +84,19 @@ public:
class TargetLoweringObjectFileMachO : public TargetLoweringObjectFile {
/// TLSDataSection - Section directive for Thread Local data.
///
const MCSection *TLSDataSection; // Defaults to ".tdata".
/// TLSBSSSection - Section directive for Thread Local uninitialized data.
///
const MCSection *TLSBSSSection; // Defaults to ".tbss".
/// TLSTLVSection - Section directive for Thread Local structure infomation.
/// Contains the source code name of the variable, visibility and a pointer
/// to the initial value (.tdata or .tbss).
const MCSection *TLSTLVSection; // Defaults to ".tlv".
const MCSection *CStringSection;
const MCSection *UStringSection;
const MCSection *TextCoalSection;

14
include/llvm/MC/MCSectionMachO.h
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@ -87,8 +87,20 @@ public:
/// S_LAZY_DYLIB_SYMBOL_POINTERS - Section with lazy symbol pointers to
/// lazy loaded dylibs.
S_LAZY_DYLIB_SYMBOL_POINTERS = 0x10U,
/// S_THREAD_LOCAL_REGULAR - Section with ....
S_THREAD_LOCAL_REGULAR = 0x11U,
/// S_THREAD_LOCAL_ZEROFILL - Thread local zerofill section.
S_THREAD_LOCAL_ZEROFILL = 0x12U,
/// S_THREAD_LOCAL_VARIABLES - Section with thread local variable structure
/// data.
S_THREAD_LOCAL_VARIABLES = 0x13U,
/// S_THREAD_LOCAL_VARIABLE_POINTERS - Section with ....
S_THREAD_LOCAL_VARIABLE_POINTERS = 0x14U,
/// S_THREAD_LOCAL_INIT_FUNCTION_POINTERS - Section with thread local
/// variable initialization pointers to functions.
S_THREAD_LOCAL_INIT_FUNCTION_POINTERS = 0x15,
LAST_KNOWN_SECTION_TYPE = S_LAZY_DYLIB_SYMBOL_POINTERS,
LAST_KNOWN_SECTION_TYPE = S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
// Valid section attributes.

16
lib/CodeGen/TargetLoweringObjectFileImpl.cpp
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@ -461,6 +461,20 @@ void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
= getContext().getMachOSection("__DATA", "__data", 0,
SectionKind::getDataRel());
TLSDataSection // .tdata
= getContext().getMachOSection("__DATA", "__thread_data",
MCSectionMachO::S_THREAD_LOCAL_REGULAR,
SectionKind::getDataRel());
TLSBSSSection // .tbss
= getContext().getMachOSection("__DATA", "__thread_bss",
MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
SectionKind::getThreadBSS());
// TODO: Verify datarel below.
TLSTLVSection // .tlv
= getContext().getMachOSection("__DATA", "__thread_vars",
MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
SectionKind::getDataRel());
CStringSection // .cstring
= getContext().getMachOSection("__TEXT", "__cstring",
MCSectionMachO::S_CSTRING_LITERALS,
@ -646,7 +660,7 @@ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
const MCSection *TargetLoweringObjectFileMachO::
SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
Mangler *Mang, const TargetMachine &TM) const {
Mangler *Mang, const TargetMachine &TM) const {
assert(!Kind.isThreadLocal() && "Darwin doesn't support TLS");
if (Kind.isText())

9
lib/MC/MCSectionMachO.cpp
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@ -34,7 +34,14 @@ static const struct {
{ "interposing", "S_INTERPOSING" }, // 0x0D
{ "16byte_literals", "S_16BYTE_LITERALS" }, // 0x0E
{ 0, /*FIXME??*/ "S_DTRACE_DOF" }, // 0x0F
{ 0, /*FIXME??*/ "S_LAZY_DYLIB_SYMBOL_POINTERS" } // 0x10
{ 0, /*FIXME??*/ "S_LAZY_DYLIB_SYMBOL_POINTERS" }, // 0x10
{ "thread_local_regular", "S_THREAD_LOCAL_REGULAR" }, // 0x11
{ "thread_bss", "S_THREAD_LOCAL_ZEROFILL" }, // 0x12
{ "thread_local_variables", "S_THREAD_LOCAL_VARIABLES" }, // 0x13
{ "thread_local_variable_pointers",
"S_THREAD_LOCAL_VARIABLE_POINTERS" }, // 0x14
{ "thread_local_init_function_pointers",
"S_THREAD_LOCAL_INIT_FUNCTION_POINTERS"}, // 0x15
};

3
lib/Target/X86/X86AsmBackend.cpp
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@ -222,7 +222,8 @@ public:
bool isVirtualSection(const MCSection &Section) const {
const MCSectionMachO &SMO = static_cast<const MCSectionMachO&>(Section);
return (SMO.getType() == MCSectionMachO::S_ZEROFILL ||
SMO.getType() == MCSectionMachO::S_GB_ZEROFILL);
SMO.getType() == MCSectionMachO::S_GB_ZEROFILL ||
SMO.getType() == MCSectionMachO::S_THREAD_LOCAL_ZEROFILL);
}
};