summaryrefslogtreecommitdiff
path: root/lib/MC/MCMachOStreamer.cpp
Commit message (Collapse)AuthorAge
* Remove an always true argument.Rafael Espindola2014-05-12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208557 91177308-0d34-0410-b5e6-96231b3b80d8
* Centralize the handling of the thumb bit.Rafael Espindola2014-04-29
| | | | | | | | | | | | | This patch centralizes the handling of the thumb bit around MCStreamer::isThumbFunc and makes isThumbFunc handle aliases. This fixes a corner case, but the main advantage is having just one way to check if a MCSymbol is thumb or not. This should still be refactored to be ARM only, but at least now it is just one predicate that has to be refactored instead of 3 (isThumbFunc, ELF_Other_ThumbFunc, and SF_ThumbFunc). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207522 91177308-0d34-0410-b5e6-96231b3b80d8
* Add range access to MCAssembler's symbol collection.David Blaikie2014-04-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206631 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] More 'nullptr' conversion or in some cases just using a boolean ↵Craig Topper2014-04-13
| | | | | | check instead of comparing to nullptr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206129 91177308-0d34-0410-b5e6-96231b3b80d8
* MachO: Add linker-optimisation hint framework to MC.Tim Northover2014-03-29
| | | | | | | | Another part of the ARM64 backend (so tests will be following soon). This is currently used by the linker to relax adrp/ldr pairs into nops where possible, though could well be more broadly applicable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205084 91177308-0d34-0410-b5e6-96231b3b80d8
* MachO: allow each section to have a linker-private symbolTim Northover2014-03-29
| | | | | | | | | The upcoming ARM64 backend doesn't have section-relative relocations, so we give each section its own symbol to provide this functionality. Of course, it doesn't need to appear in the final executable, so linker-private is the best kind for this purpose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205081 91177308-0d34-0410-b5e6-96231b3b80d8
* Darwin: Add assembler directives to create version-min load commands.Jim Grosbach2014-03-18
| | | | | | | | | | | | Allow object files to be tagged with a version-min load command for iOS or MacOSX. Teach macho-dump to understand the version-min load commands for testcases. rdar://11337778 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204190 91177308-0d34-0410-b5e6-96231b3b80d8
* [C++11] Add 'override' keyword to virtual methods that override their base ↵Craig Topper2014-03-08
| | | | | | class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203340 91177308-0d34-0410-b5e6-96231b3b80d8
* Explictly pass MCSubtargetInfo to MCCodeEmitter::EncodeInstruction()David Woodhouse2014-01-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200348 91177308-0d34-0410-b5e6-96231b3b80d8
* Modify MCObjectStreamer EmitInstTo* interfaceDavid Woodhouse2014-01-28
| | | | | | | | Add MCSubtargetInfo parameter virtual void EmitInstToFragment(const MCInst &Inst, const MCSubtargetInfo &); virtual void EmitInstToData(const MCInst &Inst, const MCSubtargetInfo &); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200346 91177308-0d34-0410-b5e6-96231b3b80d8
* Construct the MCStreamer before constructing the MCTargetStreamer.Rafael Espindola2014-01-26
| | | | | | | | | | This has a few advantages: * Only targets that use a MCTargetStreamer have to worry about it. * There is never a MCTargetStreamer without a MCStreamer, so we can use a reference. * A MCTargetStreamer can talk to the MCStreamer in its constructor. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200129 91177308-0d34-0410-b5e6-96231b3b80d8
* Most streamers' InitSections just create a text section. Make that the defaultRafael Espindola2014-01-24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199969 91177308-0d34-0410-b5e6-96231b3b80d8
* InitToTextSection is redundant with InitSections. Remove it.Rafael Espindola2014-01-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199955 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove duplicated info on what .text, .data and .bss look like.Rafael Espindola2014-01-23
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199951 91177308-0d34-0410-b5e6-96231b3b80d8
* Move .ident handling to MCStreamer.Rafael Espindola2013-10-16
| | | | | | | | No functionality change, but exposes the API so that codegen can use it too. Patch by Katya Romanova. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192757 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a MCTargetStreamer interface.Rafael Espindola2013-10-08
| | | | | | | | | | | | | This patch fixes an old FIXME by creating a MCTargetStreamer interface and moving the target specific functions for ARM, Mips and PPC to it. The ARM streamer is still declared in a common place because it is used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are completely hidden in the corresponding Target directories. I will send an email to llvmdev with instructions on how to use this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192181 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove some really nasty uses of hasRawTextSupport.Rafael Espindola2013-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When MC was first added, targets could use hasRawTextSupport to keep features working before they were added to the MC interface. The design goal of MC is to provide an uniform api for printing assembly and object files. Short of relaxations and other corner cases, a object file is just another representation of the assembly. It was never the intention that targets would keep doing things like if (hasRawTextSupport()) Set flags in one way. else Set flags in another way. When they do that they create two code paths and the object file is no longer just another representation of the assembly. This also then requires testing with llc -filetype=obj, which is extremelly brittle. This patch removes some of these hacks by replacing them with smaller ones. The ARM flag setting is trivial, so I just moved it to the constructor. For Mips, the patch adds two temporary hack directives that allow the assembly to represent the same things as the object file was already able to. The hope is that the mips developers will replace the hack directives with the same ones that gas uses and drop the -print-hack-directives flag. I will also try to implement a target streamer interface, so that we can move this out of the common code. In summary, for any new work, two rules of the thumb are * Don't use "llc -filetype=obj" in tests. * Don't add calls to hasRawTextSupport. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192035 91177308-0d34-0410-b5e6-96231b3b80d8
* Added support for generate DWARF .debug_aranges sections automatically.Richard Mitton2013-09-19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191052 91177308-0d34-0410-b5e6-96231b3b80d8
* Call generateCompactUnwindEncodings() right before we need to output the ↵Bill Wendling2013-09-09
| | | | | | | | | | | | | | frame information. There are more than one paths to where the frame information is emitted. Place the call to generateCompactUnwindEncodings() into the method which outputs the frame information, thus ensuring that the encoding is there for every path. This involved threading the MCAsmBackend object through to this method. <rdar://problem/13623355> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190335 91177308-0d34-0410-b5e6-96231b3b80d8
* Generate compact unwind encoding from CFI directives.Bill Wendling2013-09-09
| | | | | | | | | | | | | | | | We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190290 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing header line.Bill Wendling2013-09-04
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190004 91177308-0d34-0410-b5e6-96231b3b80d8
* [CodeGen] prevent abnormal on invalid attributesSaleem Abdulrasool2013-08-09
| | | | | | | | | | | | Currently, when an invalid attribute is encountered on processing a .s file, clang will abort due to llvm_unreachable. Invalid user input should not cause an abnormal termination of the compiler. Change the interface to return a boolean to indicate the failure as a first step towards improving hanlding of malformed user input to clang. Signed-off-by: Saleem Abdulrasool <compnerd@compnerd.org> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188047 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a FIXME, on darwin all virtual sections have a zerofill type.Eric Christopher2013-08-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187912 91177308-0d34-0410-b5e6-96231b3b80d8
* Add support for subsections to the ELF assembler. Fixes PR8717.Peter Collingbourne2013-04-17
| | | | | | Differential Revision: http://llvm-reviews.chandlerc.com/D598 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179725 91177308-0d34-0410-b5e6-96231b3b80d8
* Give the MCStreamer class hierarchy LLVM RTTI facilities for use withChandler Carruth2013-01-31
| | | | | | | | | | | | | | | | isa<> and dyn_cast<>. In several places, code is already hacking around the absence of this, and there seem to be several interfaces that might be lifted and/or devirtualized using this. This change was based on a discussion with Jim Grosbach about how best to handle testing for specific MCStreamer subclasses. He said that this was the correct end state, and everything else was too hacky so I decided to just make it so. No functionality should be changed here, this is just threading the kind through all the constructors and setting up the classof overloads. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174113 91177308-0d34-0410-b5e6-96231b3b80d8
* [MC/Mach-O] Add support for linker options in Mach-O files.Daniel Dunbar2013-01-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172779 91177308-0d34-0410-b5e6-96231b3b80d8
* Expose an InitToTextSection through MCStreamer.Eli Bendersky2013-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The aim of this patch is to fix the following piece of code in the platform-independent AsmParser: void AsmParser::CheckForValidSection() { if (!ParsingInlineAsm && !getStreamer().getCurrentSection()) { TokError("expected section directive before assembly directive"); Out.SwitchSection(Ctx.getMachOSection( "__TEXT", "__text", MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS, 0, SectionKind::getText())); } } This was added for the "-n" option of llvm-mc. The proposed fix adds another virtual method to MCStreamer, called InitToTextSection. Conceptually, it's similar to the existing InitSections which initializes all common sections and switches to text. The new method is implemented by each platform streamer in a way that it sees fit. So AsmParser can now do this: void AsmParser::CheckForValidSection() { if (!ParsingInlineAsm && !getStreamer().getCurrentSection()) { TokError("expected section directive before assembly directive"); Out.InitToTextSection(); } } Which is much more reasonable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172450 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch is needed to make c++ exceptions work for mips16.Reed Kotler2012-12-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mips16 is really a processor decoding mode (ala thumb 1) and in the same program, mips16 and mips32 functions can exist and can call each other. If a jal type instruction encounters an address with the lower bit set, then the processor switches to mips16 mode (if it is not already in it). If the lower bit is not set, then it switches to mips32 mode. The linker knows which functions are mips16 and which are mips32. When relocation is performed on code labels, this lower order bit is set if the code label is a mips16 code label. In general this works just fine, however when creating exception handling tables and dwarf, there are cases where you don't want this lower order bit added in. This has been traditionally distinguished in gas assembly source by using a different syntax for the label. lab1: ; this will cause the lower order bit to be added lab2=. ; this will not cause the lower order bit to be added In some cases, it does not matter because in dwarf and debug tables the difference of two labels is used and in that case the lower order bits subtract each other out. To fix this, I have added to mcstreamer the notion of a debuglabel. The default is for label and debug label to be the same. So calling EmitLabel and EmitDebugLabel produce the same result. For various reasons, there is only one set of labels that needs to be modified for the mips exceptions to work. These are the "$eh_func_beginXXX" labels. Mips overrides the debug label suffix from ":" to "=." . This initial patch fixes exceptions. More changes most likely will be needed to DwarfCFException to make all of this work for actual debugging. These changes will be to emit debug labels in some places where a simple label is emitted now. Some historical discussion on this from gcc can be found at: http://gcc.gnu.org/ml/gcc-patches/2008-08/msg00623.html http://gcc.gnu.org/ml/gcc-patches/2008-11/msg01273.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170279 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor MCInstFragment and MCDataFragment to adhere to a common interface,Eli Bendersky2012-12-07
| | | | | | | | | | | which removes code duplication and prepares the ground for future additions. Full discussion: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/158233.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169626 91177308-0d34-0410-b5e6-96231b3b80d8
* Lift EmitAssignment into MCObjectStreamer which gets rid of at least threeEli Bendersky2012-12-07
| | | | | | | | duplicate implementations in format-specific streamers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169613 91177308-0d34-0410-b5e6-96231b3b80d8
* Use the new script to sort the includes of every file under lib.Chandler Carruth2012-12-03
| | | | | | | | | | | | | | | | | Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
* Hoist some grossly duplicated code from the COFF/ELF/MachO streamers into ↵Benjamin Kramer2012-10-04
| | | | | | MCObjectStreamer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165225 91177308-0d34-0410-b5e6-96231b3b80d8
* MachO: direct-to-object attribute for data-in-code markers.Jim Grosbach2012-10-01
| | | | | | | | | | The target backend can support data-in-code load commands even when the assembler doesn't, or vice-versa. Allow targets to opt-in for direct-to-object. PR13973. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164974 91177308-0d34-0410-b5e6-96231b3b80d8
* MC: Overhaul handling of .lcommBenjamin Kramer2012-09-07
| | | | | | | | | | | | | - Darwin lied about not supporting .lcomm and turned it into zerofill in the asm parser. Push the zerofill-conversion down into macho-specific code. - This makes the tri-state LCOMMType enum superfluous, there are no targets without .lcomm. - Do proper error reporting when trying to use .lcomm with alignment on a target that doesn't support it. - .comm and .lcomm alignment was parsed in bytes on COFF, should be power of 2. - Fixes PR13755 (.lcomm crashes on ELF). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163395 91177308-0d34-0410-b5e6-96231b3b80d8
* EmitZerofill should take a 64-bit size or else it's chopping off large ↵Evan Cheng2012-06-22
| | | | | | zero-filled global. rdar://11729134 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159023 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor data-in-code annotations.Jim Grosbach2012-05-18
| | | | | | | | | | | | | | | | | | | | | | Use a dedicated MachO load command to annotate data-in-code regions. This is the same format the linker produces for final executable images, allowing consistency of representation and use of introspection tools for both object and executable files. Data-in-code regions are annotated via ".data_region"/".end_data_region" directive pairs, with an optional region type. data_region_directive := ".data_region" { region_type } region_type := "jt8" | "jt16" | "jt32" | "jta32" end_data_region_directive := ".end_data_region" The previous handling of ARM-style "$d.*" labels was broken and has been removed. Specifically, it didn't handle ARM vs. Thumb mode when marking the end of the section. rdar://11459456 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157062 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert assert(0) to llvm_unreachableCraig Topper2012-02-07
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149967 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up. MCAsmBackend naming conventions.Jim Grosbach2012-01-18
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148400 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unnecessary default cases in switches that cover all enum values.David Blaikie2012-01-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147855 91177308-0d34-0410-b5e6-96231b3b80d8
* Split Finish into Finish and FinishImpl to have a common place to do end ofRafael Espindola2012-01-07
| | | | | | | | file error checking. Use that to error on an unfinished cfi_startproc. The error is not nice, but is already better than a segmentation fault. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147717 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove obsolete FIXME.Jim Grosbach2011-11-28
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145313 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't drop alignment info on local common symbols.Benjamin Kramer2011-09-01
| | | | | | | | | | | - On COFF the .lcomm directive has an alignment argument. - On ELF we fall back to .local + .comm Based on a patch by NAKAMURA Takumi. Fixes PR9337, PR9483 and PR10128. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138976 91177308-0d34-0410-b5e6-96231b3b80d8
* Support .code32 and .code64 in X86 assembler.Evan Cheng2011-07-27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136197 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to ↵Evan Cheng2011-07-25
| | | | | | createMCAsmBackend. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136010 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a missing enumerator to this switch. Currently its in theChandler Carruth2011-07-25
| | | | | | | | | | | | | | assert-path code, as previously we would have fallen off the end of the function, but please review and let me know if this should go somewhere else. This fixes a Clang warning: lib/MC/MCMachOStreamer.cpp:201:11: error: enumeration value 'MCSA_IndirectSymbol' not handled in switch [-Werror,-Wswitch-enum] switch (Attribute) { ^ 1 error generated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135976 91177308-0d34-0410-b5e6-96231b3b80d8
* Move some ELF directives into ELF asm parser.Jim Grosbach2011-07-25
| | | | | | | | | | | | | | | The .local, .hidden, .internal, and .protected are not legal for all supported file formats (in particular, they're invalid for MachO). Move the parsing for them into the ELF assembly parser since that's the format they're for. Similarly, .weak is used by COFF and ELF, but not MachO, so move the parsing to the COFF and ELF asm parsers. Previously, using any of these directives on Darwin would result in an assertion failure in the parser; now we get a diagnostic as we should. rdar://9827089 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135921 91177308-0d34-0410-b5e6-96231b3b80d8
* Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where ↵Evan Cheng2011-07-23
| | | | | | they belong. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135833 91177308-0d34-0410-b5e6-96231b3b80d8
* Unfortunately several files in MC are badly violating layering rule by usingEvan Cheng2011-07-14
| | | | | | | | | | TargetAsmInfo, which in turn pulls in TargetRegisterInfo, etc. :-( There are other cases of violations, but this is probably the worst. This patch is but one small step towards fixing this. 500 more steps to go. :-( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135131 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor some code into a new EmitFrames method.Rafael Espindola2011-05-10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131119 91177308-0d34-0410-b5e6-96231b3b80d8
* Add r130623 back now that ELF has been fixed to work with -fno-dwarf2-cfi-asm.Rafael Espindola2011-05-01
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130658 91177308-0d34-0410-b5e6-96231b3b80d8
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 04:57:19 +0000