Line data    Source code

       1             : //===-- AVRTargetStreamer.cpp - AVR Target Streamer Methods ---------------===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : // This file provides AVR specific target streamer methods.
      11             : //
      12             : //===----------------------------------------------------------------------===//
      13             : 
      14             : #include "AVRTargetStreamer.h"
      15             : 
      16             : #include "llvm/MC/MCContext.h"
      17             : 
      18             : namespace llvm {
      19             : 
      20         179 : AVRTargetStreamer::AVRTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
      21             : 
      22         169 : AVRTargetAsmStreamer::AVRTargetAsmStreamer(MCStreamer &S)
      23         169 :     : AVRTargetStreamer(S) {}
      24             : 
      25         179 : void AVRTargetStreamer::finish() {
      26         179 :   MCStreamer &OS = getStreamer();
      27         179 :   MCContext &Context = OS.getContext();
      28             : 
      29         179 :   MCSymbol *DoCopyData = Context.getOrCreateSymbol("__do_copy_data");
      30         179 :   MCSymbol *DoClearBss = Context.getOrCreateSymbol("__do_clear_bss");
      31             : 
      32             :   // FIXME: We can disable __do_copy_data if there are no static RAM variables.
      33             : 
      34         358 :   OS.emitRawComment(" Declaring this symbol tells the CRT that it should");
      35         358 :   OS.emitRawComment("copy all variables from program memory to RAM on startup");
      36         179 :   OS.EmitSymbolAttribute(DoCopyData, MCSA_Global);
      37             : 
      38         358 :   OS.emitRawComment(" Declaring this symbol tells the CRT that it should");
      39         358 :   OS.emitRawComment("clear the zeroed data section on startup");
      40         179 :   OS.EmitSymbolAttribute(DoClearBss, MCSA_Global);
      41         179 : }
      42             : 
      43             : } // end namespace llvm
      44             :