forked from OSchip/llvm-project
ee2c0f76d7
Summary:
Many directives are unavailable, and support for others may be limited.
This first draft has preliminary support for:
- conditional directives (including errors),
- data allocation (unsigned types up to 8 bytes, and ALIGN),
- equates/variables (numeric and text),
- and procedure directives (without parameters),
as well as COMMENT, ECHO, INCLUDE, INCLUDELIB, PUBLIC, and EXTERN. Text variables (aka text macros) are expanded in-place wherever the identifier occurs.
We deliberately ignore all ml.exe processor directives.
Prominent features not yet supported:
- structs
- macros (both procedures and functions)
- procedures (with specified parameters)
- substitution & expansion operators
Conditional directives are complicated by the fact that "ifdef rax" is a valid way to check if a file is being assembled for a 64-bit x86 processor; we add support for "ifdef <register>" in general, which requires adding a tryParseRegister method to all MCTargetAsmParsers. (Some targets require backtracking in the non-register case.)
Reviewers: rnk, thakis
Reviewed By: thakis
Subscribers: kerbowa, merge_guards_bot, wuzish, arsenm, dschuff, jyknight, dylanmckay, sdardis, nemanjai, jvesely, mgorny, sbc100, jgravelle-google, hiraditya, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, jsji, Jim, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D72680
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| .. | ||
| CMakeLists.txt | ||
| LLVMBuild.txt | ||
| X86ATTInstPrinter.cpp | ||
| X86ATTInstPrinter.h | ||
| X86AsmBackend.cpp | ||
| X86BaseInfo.h | ||
| X86ELFObjectWriter.cpp | ||
| X86FixupKinds.h | ||
| X86InstComments.cpp | ||
| X86InstComments.h | ||
| X86InstPrinterCommon.cpp | ||
| X86InstPrinterCommon.h | ||
| X86IntelInstPrinter.cpp | ||
| X86IntelInstPrinter.h | ||
| X86MCAsmInfo.cpp | ||
| X86MCAsmInfo.h | ||
| X86MCCodeEmitter.cpp | ||
| X86MCExpr.h | ||
| X86MCTargetDesc.cpp | ||
| X86MCTargetDesc.h | ||
| X86MachObjectWriter.cpp | ||
| X86TargetStreamer.h | ||
| X86WinCOFFObjectWriter.cpp | ||
| X86WinCOFFStreamer.cpp | ||
| X86WinCOFFTargetStreamer.cpp | ||