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7a49f52054
- This patch attempts to implement the location counter syntax (*) for the HLASM variant for PC-relative instructions.
- In the HLASM variant, for purely constant relocatable values, we expect a * token preceding it, with special support for " *" which is parsed as "<pc-rel-insn 0>"
- For combinations of absolute values and relocatable values, we don't expect the "*" preceding the token.
When you have a " * " what’s accepted is:
```
*<space>.*{.*} -> <pc-rel-insn> 0
*[+|-][constant-value] -> <pc-rel-insn> [+|-]constant-value
```
When you don’t have a " * " what’s accepted is:
```
brasl 1,func is allowed (MCSymbolRef type)
brasl 1,func+4 is allowed (MCBinary type)
brasl 1,4+func is allowed (MCBinary type)
brasl 1,-4+func is allowed (MCBinary type)
brasl 1,func-4 is allowed (MCBinary type)
brasl 1,*func is not allowed (* cannot be used for non-MCConstantExprs)
brasl 1,*+func is not allowed (* cannot be used for non-MCConstantExprs)
brasl 1,*+func+4 is not allowed (* cannot be used for non-MCConstantExprs)
brasl 1,*+4+func is not allowed (* cannot be used for non-MCConstantExprs)
brasl 1,*-4+8+func is not allowed (* cannot be used for non-MCConstantExprs)
```
Reviewed By: Kai
Differential Revision: https://reviews.llvm.org/D100987
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|---|---|---|
| .. | ||
| MCDisassembler | ||
| MCParser | ||
| CMakeLists.txt | ||
| ConstantPools.cpp | ||
| ELFObjectWriter.cpp | ||
| MachObjectWriter.cpp | ||
| MCAsmBackend.cpp | ||
| MCAsmInfo.cpp | ||
| MCAsmInfoCOFF.cpp | ||
| MCAsmInfoDarwin.cpp | ||
| MCAsmInfoELF.cpp | ||
| MCAsmInfoWasm.cpp | ||
| MCAsmInfoXCOFF.cpp | ||
| MCAsmMacro.cpp | ||
| MCAsmStreamer.cpp | ||
| MCAssembler.cpp | ||
| MCCodeEmitter.cpp | ||
| MCCodeView.cpp | ||
| MCContext.cpp | ||
| MCDwarf.cpp | ||
| MCELFObjectTargetWriter.cpp | ||
| MCELFStreamer.cpp | ||
| MCExpr.cpp | ||
| MCFragment.cpp | ||
| MCInst.cpp | ||
| MCInstPrinter.cpp | ||
| MCInstrAnalysis.cpp | ||
| MCInstrDesc.cpp | ||
| MCInstrInfo.cpp | ||
| MCLabel.cpp | ||
| MCLinkerOptimizationHint.cpp | ||
| MCMachObjectTargetWriter.cpp | ||
| MCMachOStreamer.cpp | ||
| MCNullStreamer.cpp | ||
| MCObjectFileInfo.cpp | ||
| MCObjectStreamer.cpp | ||
| MCObjectWriter.cpp | ||
| MCPseudoProbe.cpp | ||
| MCRegisterInfo.cpp | ||
| MCSchedule.cpp | ||
| MCSection.cpp | ||
| MCSectionCOFF.cpp | ||
| MCSectionELF.cpp | ||
| MCSectionMachO.cpp | ||
| MCSectionWasm.cpp | ||
| MCSectionXCOFF.cpp | ||
| MCStreamer.cpp | ||
| MCSubtargetInfo.cpp | ||
| MCSymbol.cpp | ||
| MCSymbolELF.cpp | ||
| MCSymbolXCOFF.cpp | ||
| MCTargetOptions.cpp | ||
| MCTargetOptionsCommandFlags.cpp | ||
| MCValue.cpp | ||
| MCWasmObjectTargetWriter.cpp | ||
| MCWasmStreamer.cpp | ||
| MCWin64EH.cpp | ||
| MCWinCOFFStreamer.cpp | ||
| MCWinEH.cpp | ||
| MCXCOFFObjectTargetWriter.cpp | ||
| MCXCOFFStreamer.cpp | ||
| StringTableBuilder.cpp | ||
| SubtargetFeature.cpp | ||
| WasmObjectWriter.cpp | ||
| WinCOFFObjectWriter.cpp | ||
| XCOFFObjectWriter.cpp | ||