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path: root/lib/MC/WasmObjectWriter.cpp
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* Simplify interface now that we don't need to pass IsPCRel. NFC.Rafael Espindola2017-07-111-3/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307734 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Fix use of cast vs dyn_castSam Clegg2017-07-111-15/+7
| | | | | | Differential Revision: https://reviews.llvm.org/D35233 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307612 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Use the correct size for MCFillFragmentSam Clegg2017-07-101-1/+1
| | | | | | | | | | | Summary: When implementing MCFillFragment, use the size of the fragment, rather than the size of the section. Patch by Dan Gohman Differential Revision: https://reviews.llvm.org/D35090 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307565 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Support weak defined symbolsSam Clegg2017-07-071-65/+68
| | | | | | | | | | | | Model weakly defined symbols as symbols that are both exports and imported and marked as weak. Local references to the symbols refer to the import but the linker can resolve this to the weak export if not strong symbol is found at link time. Differential Revision: https://reviews.llvm.org/D35029 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307348 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Fix types for address taken functionsSam Clegg2017-07-051-1/+1
| | | | | | Differential Revision: https://reviews.llvm.org/D34966 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307198 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] MC: Don't generate extra types for weak aliasSam Clegg2017-07-051-0/+4
| | | | | | | | | | Previously we were generating a void(void) function type for a weak alias. Update the weak-alias test case to catch this. Differential Revision: https://reviews.llvm.org/D34734 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307194 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Add data size and alignement to linking sectionSam Clegg2017-06-271-7/+17
| | | | | | | | | The overal size of the data section (including BSS) is otherwise not included in the wasm binary. Differential Revision: https://reviews.llvm.org/D34657 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@306459 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Cleanup WasmObjectWriter.cpp. NFCSam Clegg2017-06-211-78/+70
| | | | | | | | | | | - Use auto where appropriate - Use early return to reduce nesting - Remove stray comment line - Use C++ foreach over explicit iterator Differential Revision: https://reviews.llvm.org/D34477 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305971 91177308-0d34-0410-b5e6-96231b3b80d8
* WasmObjectWriter.cpp: Tweak a comment line. [-Wdocumentation]NAKAMURA Takumi2017-06-201-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305777 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix unused function build error in lldSam Clegg2017-06-201-0/+2
| | | | | | | | | | | | The lld-x86_64-darwin13 is failing with: error: unused function 'operator<<' Wrap the declation in ifndef NDEBUG, which matches what is done in MipsELFObjectWriter.cpp. Differential Revision: https://reviews.llvm.org/D34384 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305771 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Fix build failures introduced in r305769Sam Clegg2017-06-201-2/+1
| | | | | | | | | | | This fixes two build failures that only occur in certain configurations: - error: unused function 'operator<<' - error: control reaches end of non-void function Differential Revision: https://reviews.llvm.org/D34382 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305770 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Add support for weak symbols in the binary formatSam Clegg2017-06-201-46/+123
| | | | | | | | | | | This also introduces the updated format for the "linking" section which can represent extra symbol information. See: https://github.com/WebAssembly/tool-conventions/pull/10 Differential Revision: https://reviews.llvm.org/D34019 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305769 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Use __stack_pointer global when writing wasm binarySam Clegg2017-06-161-2/+6
| | | | | | | | | | | | | | | | | | This ensures that symbolic relocations are generated for stack pointer manipulations. These relocations are of type R_WEBASSEMBLY_GLOBAL_INDEX_LEB. This change also adds support for reading relocations of this type in WasmObjectFile.cpp. Since its a globally imported symbol this does mean that the get_global/set_global instruction won't be valid until the objects are linked that global used in no longer an imported global. Differential Revision: https://reviews.llvm.org/D34172 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305616 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Cleanup WebAssemblyWasmObjectWriterSam Clegg2017-06-131-4/+5
| | | | | | Differential Revision: https://reviews.llvm.org/D34131 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305316 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] MC: Fix value of R_WEBASSEMBLY_TABLE_INDEX relocationsSam Clegg2017-06-121-14/+20
| | | | | | | | | | | | | Previously we were writing the value function index space value but for these types of relocations we want to be writing the table element index space value. Add a test case for these relocation types that fails without this change. Differential Revision: https://reviews.llvm.org/D33962 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305253 91177308-0d34-0410-b5e6-96231b3b80d8
* Move Object format code to lib/BinaryFormat.Zachary Turner2017-06-071-0/+1
| | | | | | | | | | | | This creates a new library called BinaryFormat that has all of the headers from llvm/Support containing structure and layout definitions for various types of binary formats like dwarf, coff, elf, etc as well as the code for identifying a file from its magic. Differential Revision: https://reviews.llvm.org/D33843 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304864 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] MC: Refactor relocation handlingSam Clegg2017-06-061-151/+94
| | | | | | | | | | | | | The change cleans up and unifies the handling of relocation entries in WasmObjectWriter. Type index relocation no longer need to be handled separately. The only externally visible change should be that type index relocations are no longer grouped at the end. Differential Revision: https://reviews.llvm.org/D33918 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304816 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Remove unused methods from MCWasmObjectTargetWriterSam Clegg2017-06-061-0/+21
| | | | | | | | | | | | | These methods looks like they were originally came from MCELFObjectTargetWriter but they are never called by the WasmObjectWriter. Remove these methods meant the declaration of WasmRelocationEntry could also move into the cpp file. Differential Revision: https://reviews.llvm.org/D33905 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304804 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Refactor WasmObjectWriter::writeObjectSam Clegg2017-06-031-402/+483
| | | | | | | | | | The size of this function was getting a little out of. control. Split code for writing each section type into seperate functions. Differential Revision: https://reviews.llvm.org/D33792 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304634 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] MC: Fix references to undefined externals in data sectionSam Clegg2017-06-021-8/+13
| | | | | | | | | | | | Undefined externals don't need to have a size or an offset. This was broken by r303915. Added a test for this case. This fixes the "Compile LLVM Torture (o)" step on the wasm waterfall. Differential Revision: https://reviews.llvm.org/D33803 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304505 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] MC: Include unnamed data when writing wasm filesSam Clegg2017-05-251-18/+16
| | | | | | | | | | | | Also, include global entries for all data symbols, not just external ones, since these are referenced by the relocation records. Add a test case that includes unnamed data. Differential Revision: https://reviews.llvm.org/D33079 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303915 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Add size of section header to data relocation offsets.Sam Clegg2017-04-281-9/+12
| | | | | | | | | | | Also, add test for data relocations and fix addend to be signed. Subscribers: jfb, dschuff Differential Revision: https://reviews.llvm.org/D32513 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301690 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Write initial memory in pages not bytesSam Clegg2017-04-281-2/+4
| | | | | | | | Subscribers: jfb, dschuff Differential Revision: https://reviews.llvm.org/D32660 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301687 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Fix relocation count in wasm binaries with call_indirectSam Clegg2017-04-251-1/+1
| | | | | | | | Subscribers: jfb, dschuff Differential Revision: https://reviews.llvm.org/D32459 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301331 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix signed/unsigned warningSimon Pilgrim2017-03-311-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299194 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Initial linking metadata supportDan Gohman2017-03-301-23/+123
| | | | | | | | | | | | | | | | | Add support for the new relocations and linking metadata section support in https://github.com/WebAssembly/tool-conventions/blob/master/Linking.md. In particular, this allows LLVM to indicate which variable is the stack pointer, so that it can be linked with other objects. This also adds support for emitting type relocations for call_indirect instructions. Right now, this is mainly tested by using wabt and hexdump to examine the output on selected testcases. We'll add more tests as the design stablizes and more of the pieces are in place. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299141 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Fix import type to be signed LEBsDerek Schuff2017-03-231-1/+1
| | | | | | | | | | | | | | This fix is a follow up a previous change with stored value types as signed integers in memory. In future, once the yaml<->wasm binary patche lands we can add test coverage for this kind of thing. Differential Revision: https://reviews.llvm.org/D31227 Patch by Sam Clegg git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298612 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Fix some broken type encodings in wasm binaryDerek Schuff2017-03-161-9/+9
| | | | | | | | | | | | A recent change switch the in-memory wasm value types to be signed integers, but I missing a few cases where these were being writing to the binary. Differential Revision: https://reviews.llvm.org/D31014 Patch by Sam Clegg git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297991 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Update format of 'names' section.Derek Schuff2017-03-151-6/+11
| | | | | | | | | | | | This change updates to the format of the 'names' sectionin the generated wasm binary to match the latest changesto the design and 'wabt'. Differential Revision: https://reviews.llvm.org/D30950 Patch by Sam Clegg git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297877 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Use LEB encoding for value typesDerek Schuff2017-03-141-20/+24
| | | | | | | | | | | | Previously we were using the encoded LEB hex values for the value types. This change uses the decoded negative value and the LEB encoder to write them out. Differential Revision: https://reviews.llvm.org/D30847 Patch by Sam Clegg git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297777 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Add some comments and tidy up whitespace.Dan Gohman2017-02-271-2/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296402 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Add support for using a wasm global for the stack pointer.Dan Gohman2017-02-241-0/+24
| | | | | | | | This replaces the __stack_pointer variable which was allocated in linear memory. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296201 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Basic support for Wasm object file encoding.Dan Gohman2017-02-241-6/+900
| | | | | | | | | | With the "wasm32-unknown-unknown-wasm" triple, this allows writing out simple wasm object files, and is another step in a larger series toward migrating from ELF to general wasm object support. Note that this code and the binary format itself is still experimental. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296190 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Implement the wasm binary container header.Dan Gohman2017-02-221-1/+3
| | | | | | | | Also, update the version number to 0x1, which is what engines are now expecting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295860 91177308-0d34-0410-b5e6-96231b3b80d8
* [WebAssembly] Add skeleton MC support for the Wasm container formatDan Gohman2017-02-221-0/+119
This just adds the basic skeleton for supporting a new object file format. All of the actual encoding will be implemented in followup patches. Differential Revision: https://reviews.llvm.org/D26722 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295803 91177308-0d34-0410-b5e6-96231b3b80d8
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