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44 lines
1.5 KiB
44 lines
1.5 KiB
//===-- AVRTargetStreamer.cpp - AVR Target Streamer Methods ---------------===//
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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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//
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// This file provides AVR specific target streamer methods.
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//
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//===----------------------------------------------------------------------===//
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#include "AVRTargetStreamer.h"
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#include "llvm/MC/MCContext.h"
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namespace llvm {
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AVRTargetStreamer::AVRTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
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AVRTargetAsmStreamer::AVRTargetAsmStreamer(MCStreamer &S)
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: AVRTargetStreamer(S) {}
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void AVRTargetStreamer::finish() {
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MCStreamer &OS = getStreamer();
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MCContext &Context = OS.getContext();
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MCSymbol *DoCopyData = Context.getOrCreateSymbol("__do_copy_data");
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MCSymbol *DoClearBss = Context.getOrCreateSymbol("__do_clear_bss");
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// FIXME: We can disable __do_copy_data if there are no static RAM variables.
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OS.emitRawComment(" Declaring this symbol tells the CRT that it should");
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OS.emitRawComment("copy all variables from program memory to RAM on startup");
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OS.emitSymbolAttribute(DoCopyData, MCSA_Global);
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OS.emitRawComment(" Declaring this symbol tells the CRT that it should");
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OS.emitRawComment("clear the zeroed data section on startup");
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OS.emitSymbolAttribute(DoClearBss, MCSA_Global);
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}
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} // end namespace llvm
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