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06b207a9f5
Adds support for the TLS general dynamic access model to assembly files on AIX 32-bit. To generate the correct code sequence when accessing a TLS variable `v`, we first create two TOC entry nodes, one for the variable offset, one for the region handle. These nodes are followed by a `PPCISD::TLSGD_AIX` node (new node introduced by this patch). The `PPCISD::TLSGD_AIX` node (`TLSGDAIX` pseudo instruction) is expanded to 2 copies (to put the variable offset and region handle in the right registers) and a call to `__tls_get_addr`. This patch also changes the way TC entries are generated in asm files. If the generated TC entry is for the region handle of a TLS variable, we add the `@m` relocation and the `.` prefix to the entry name. For example: ``` L..C0: .tc .v[TC],v[TL]@m -> region handle L..C1: .tc v[TC],v[TL] -> variable offset ``` Reviewed By: nemanjai, sfertile Differential Revision: https://reviews.llvm.org/D97948
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
//===- PPCTargetStreamer.h - PPC Target Streamer ----------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_POWERPC_PPCTARGETSTREAMER_H
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#define LLVM_LIB_TARGET_POWERPC_PPCTARGETSTREAMER_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/MCStreamer.h"
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namespace llvm {
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class MCExpr;
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class MCSymbol;
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class MCSymbolELF;
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class PPCTargetStreamer : public MCTargetStreamer {
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public:
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PPCTargetStreamer(MCStreamer &S);
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~PPCTargetStreamer() override;
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virtual void emitTCEntry(const MCSymbol &S,
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MCSymbolRefExpr::VariantKind Kind) = 0;
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virtual void emitMachine(StringRef CPU) = 0;
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virtual void emitAbiVersion(int AbiVersion) = 0;
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virtual void emitLocalEntry(MCSymbolELF *S, const MCExpr *LocalOffset) = 0;
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};
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_POWERPC_PPCTARGETSTREAMER_H
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