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path: root/lib/Target/TargetLoweringObjectFile.cpp
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2010-01-07We need to put any kind of data with a relocation into aEric Christopher
not-readonly segment on darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92933 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19Reverting the EH table patches.Bill Wendling
$ svn merge -c -89279 https://llvm.org/svn/llvm-project/llvm/trunk --- Reverse-merging r89279 into '.': U lib/CodeGen/AsmPrinter/DwarfException.cpp U lib/Target/TargetLoweringObjectFile.cpp $ svn merge -c -89270 https://llvm.org/svn/llvm-project/llvm/trunk --- Reverse-merging r89270 into '.': G lib/CodeGen/AsmPrinter/DwarfException.cpp G lib/Target/TargetLoweringObjectFile.cpp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89379 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-19The "ReadOnlyWithRel" enum seems to apply more to what Darwin does with the EHBill Wendling
exception table than DataRel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89279 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-18Attempt #2:Bill Wendling
Place the EH table in the __TEXT section on MachO. It saves space. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89270 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-07add some missing #includesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86367 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-06Pass StringRef by value.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86251 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20--- Reverse-merging r82282 into '.':Bill Wendling
U lib/CodeGen/AsmPrinter/DwarfException.cpp U lib/CodeGen/AsmPrinter/DwarfException.h --- Reverse-merging r82274 into '.': U lib/Target/TargetLoweringObjectFile.cpp G lib/CodeGen/AsmPrinter/DwarfException.cpp These revisions were breaking everything. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82396 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20Still one more thing wrong here...Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82356 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20Here's fun! It turns out that these filter functions can be internal. If they'reBill Wendling
internal, they shouldn't use the indirect pointer stuff. In the case of throw_rethrow_test, it was marked as 'internal' and calculated its own offset to its contents. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82354 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-19Revert r82274. It's causing failures in the CINT2006 benchmarks.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82336 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-18It's inefficient to have place the exception tables (which contain the LSDA)Bill Wendling
into the __DATA section. At launch time, dyld has to update most of the section to fix up the type info pointers. It's better to place it into the __TEXT section and use pc-rel indirect pointer encodings. Similar to the personality routine. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-17pass machinemoduleinfo down into getSymbolForDwarfGlobalReference, Chris Lattner
currently unused. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82157 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16Big change #1 for personality function references:Chris Lattner
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(); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81991 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Provide proper section flags for various BSS flavoursAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81322 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-09Whitespace cleanupAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81321 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-26Simplify.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80176 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-18fix COFF targets (mingw/cygwin) to provide ehframe and LSDA sectionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-18Text sections should have 'exec' flag set. This seems to unbreak libstdc++ ↵Anton Korobeynikov
on linux. Patch by Dmitry Gorbachev! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79334 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-17Clear the uniquing table when initializing TLOF to avoid a crash when the ↵Benjamin Kramer
TLOF is reinitialized with a different MCContext. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79253 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-17Update getSectionForConstant() to to allow mergable sections to be nulled outRichard Osborne
if not supported by the ELF subtarget. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79249 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15the .eh_frame sections we generate need to be writable (whichChris Lattner
is why they are datarel). This should fix PR4724, and is fallout from r78890. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79111 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15If ELF subtargets don't want to support 4/8/16-byte mergable sections, allow Chris Lattner
them to null out the default section pointers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79078 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-14Make these matching rules more strict so that they don'tDan Gohman
accidentally match unrelated things. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78966 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Remove HasCrazyBSS and add a flag in TAI to indicate that '.section' Bruno Cardoso Lopes
must be emitted for PowerPC-Linux '.bss' section git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78958 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13Change MCSectionELF to represent a section semantically instead ofBruno Cardoso Lopes
syntactically as a string, very similiar to what Chris did with MachO. The parsing support and validation is not introduced yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78890 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13sink uniquing of sections out of MCContext into the ELF and PECOFF TLOF ↵Chris Lattner
implementations. MCContext no longer maintains a string -> section map. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78874 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13add some comments: MCContext owns the MCSections, but it bump pointer allocatesChris Lattner
them, so it doesn't have to explicitly free them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78870 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-13reject invalid code like:Chris Lattner
int x __attribute__((section("_foo, _bar"))) = 4; int y __attribute__((section("_foo, _bar, 4byte_literals"))) = 1; git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78867 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12implement support for uniquing MachO sections.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78866 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-12reduce #includageChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78860 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11Tidy #includes.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78677 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10split MachO section handling stuff out to its out .h/.cpp file.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78576 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-10Make the big switch: Change MCSectionMachO to represent a section *semantically*Chris Lattner
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? git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78547 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-081. Make MCSection an abstract class.Chris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78510 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08make target-specific TLOF impls (except PIC16) create target-specificChris Lattner
MCSection instances. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78500 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08eliminate TargetLoweringObjectFileSparc in favor of a TAI hook.Chris Lattner
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78498 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08now that getOrCreateSection is all object-file specific,Chris Lattner
give the impls an object-file-specific name. In the future they can take different arguments etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78495 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-08sink getOrCreateSection down into all the object file implementations,Chris Lattner
now that they create *all* the sections. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78494 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Fix several fixmes and clean up code by sinking *all* sectionChris Lattner
creation activity into the target-specific subclasses of TLOF. Before this, globals with explicit sections could be created by the base class. 1. make getOrCreateSection protected, add a new getExplicitSectionGlobal pure virtual method to assign sections to globals with a specified section. 2. eliminate getSpecialCasedSectionGlobals, which is now PIC specific. 3. eliminate the getKindForNamedSection virtual method, which is now just a static method for ELF. 4. Add implementions of getExplicitSectionGlobal for ELF/PECOFF/Darwin/PIC16. They are now all detangled and understandable, woo! :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78319 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05expose SectionKindForGlobal to curious clients, named asChris Lattner
getKindForGlobal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78156 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04enhance codegen to put 16-bit character strings into the Chris Lattner
__TEXT,__ustring section on darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04fix a fixme: don't create an explicit "CStringSection" for ELF,Chris Lattner
it is just being used as a prefix, so forward substitute it directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78067 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Add support emiting for 2/4 byte mergable strings to the ".rodata.str*"Chris Lattner
section on ELF targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78066 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04make MergeableCString be a SectionKind "abstract class", andChris Lattner
add new concrete versions for 1/2/4-byte mergable strings. These are not actually created yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78055 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Eliminate textual section switching from the x86 backend, oneChris Lattner
more step towards "semantics sections" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78002 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02move dwarf debug info section selection stuff from TAI toChris Lattner
TLOF, unifying all the dwarf targets at the same time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77889 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02convert EHFrameSection to be managed by TLOF instead of TAI.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77888 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02move getDwarfExceptionSection from TAI to TLOF and rename it to Chris Lattner
getLSDASection() to be more specific. This makes it pretty obvious that the ELF LSDA section is being specified wrong in PIC mode. We're probably getting a lot of startup-time relocations to a readonly page, which is expensive and bad. Someone who cares about ELF C++ should investigate this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77847 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-02convert ctors/dtors section to be in TLOF instead ofChris Lattner
TAI. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77842 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-01(re)introduce new simpler apis for creation sectionkinds.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77834 91177308-0d34-0410-b5e6-96231b3b80d8
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