pass machinemoduleinfo down into getSymbolForDwarfGlobalReference,
currently unused.

llvm-svn: 82157

Big change #1 for personality function references:
Eliminate the PersonalityPrefix/Suffix & NeedsIndirectEncoding
fields from MAI: they aren't part of the asm syntax, they are
related to the structur

Big change #1 for personality function references:
Eliminate the PersonalityPrefix/Suffix & NeedsIndirectEncoding
fields from MAI: they aren't part of the asm syntax, they are
related to the structure of the object file.

To replace their functionality, add a new
TLOF::getSymbolForDwarfGlobalReference method which asks targets
to decide how to reference a global from EH in a pc-relative way.

The default implementation just returns the symbol. The default
darwin implementation references the symbol through an indirect
$non_lazy_ptr stub. The bizarro x86-64 darwin specialization
handles the weird "foo@GOTPCREL+4" hack.

DwarfException.cpp now uses this to emit the reference to the
symbol in the right way, and this also eliminates another
horrible hack from DwarfException.cpp:

- if (strcmp(MAI->getPersonalitySuffix(), "+4@GOTPCREL"))
- O << "-" << MAI->getPCSymbol();

llvm-svn: 81991

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Provide proper section flags for various BSS flavours

llvm-svn: 81322

Whitespace cleanup

llvm-svn: 81321

Simplify.

llvm-svn: 80176

fix COFF targets (mingw/cygwin) to provide ehframe and LSDA sections

llvm-svn: 79346

Text sections should have 'exec' flag set. This seems to unbreak libstdc++ on linux.
Patch by Dmitry Gorbachev!

llvm-svn: 79334

Clear the uniquing table when initializing TLOF to avoid a crash when the TLOF is reinitialized with a different MCContext.

llvm-svn: 79253

Update getSectionForConstant() to to allow mergable sections to be nulled out
if not supported by the ELF subtarget.

llvm-svn: 79249

the .eh_frame sections we generate need to be writable (which
is why they are datarel). This should fix PR4724, and is fallout
from r78890.

llvm-svn: 79111

If ELF subtargets don't want to support 4/8/16-byte mergable sections, allow
them to null out the default section pointers.

llvm-svn: 79078

Make these matching rules more strict so that they don't
accidentally match unrelated things.

llvm-svn: 78966

Remove HasCrazyBSS and add a flag in TAI to indicate that '.section'
must be emitted for PowerPC-Linux '.bss' section

llvm-svn: 78958

Change MCSectionELF to represent a section semantically instead of
syntactically as a string, very similiar to what Chris did with MachO.
The parsing support and validation is not introduced yet.

ll

Change MCSectionELF to represent a section semantically instead of
syntactically as a string, very similiar to what Chris did with MachO.
The parsing support and validation is not introduced yet.

llvm-svn: 78890

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sink uniquing of sections out of MCContext into the ELF and PECOFF TLOF implementations.

MCContext no longer maintains a string -> section map.

llvm-svn: 78874

add some comments: MCContext owns the MCSections, but it bump pointer allocates
them, so it doesn't have to explicitly free them.

llvm-svn: 78870

reject invalid code like:
int x __attribute__((section("_foo, _bar"))) = 4;
int y __attribute__((section("_foo, _bar, 4byte_literals"))) = 1;

llvm-svn: 78867

implement support for uniquing MachO sections.

llvm-svn: 78866

reduce #includage

llvm-svn: 78860

Tidy #includes.

llvm-svn: 78677

split MachO section handling stuff out to its out .h/.cpp file.

llvm-svn: 78576

Make the big switch: Change MCSectionMachO to represent a section *semantically*
instead of syntactically as a string. This means that it keeps track of the
segment, section, flags, etc directly an

Make the big switch: Change MCSectionMachO to represent a section *semantically*
instead of syntactically as a string. This means that it keeps track of the
segment, section, flags, etc directly and asmprints them in the right format.
This also includes parsing and validation support for llvm-mc and
"attribute(section)", so we should now start getting errors about invalid
section attributes from the compiler instead of the assembler on darwin.

Still todo:
1) Uniquing of darwin mcsections
2) Move all the Darwin stuff out to MCSectionMachO.[cpp|h]
3) there are a few FIXMEs, for example what is the syntax to get the
S_GB_ZEROFILL segment type?

llvm-svn: 78547

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1. Make MCSection an abstract class.
2. Move section switch printing to MCSection virtual method which takes a
TAI. This eliminates textual formatting stuff from TLOF.
3. Eliminate SwitchToSectio

1. Make MCSection an abstract class.
2. Move section switch printing to MCSection virtual method which takes a
TAI. This eliminates textual formatting stuff from TLOF.
3. Eliminate SwitchToSectionDirective, getSectionFlagsAsString, and
TLOFELF::AtIsCommentChar.

llvm-svn: 78510

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make target-specific TLOF impls (except PIC16) create target-specific
MCSection instances.

llvm-svn: 78500

eliminate TargetLoweringObjectFileSparc in favor of a TAI hook.
A TAI hook is appropriate in this case because this is just an
asm syntax issue, not a semantic difference. TLOF should model
the seman

eliminate TargetLoweringObjectFileSparc in favor of a TAI hook.
A TAI hook is appropriate in this case because this is just an
asm syntax issue, not a semantic difference. TLOF should model
the semantics of the section.

llvm-svn: 78498

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