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https://github.com/c64scene-ar/llvm-6502.git
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505996fdd5
Implement _section macro to allow users to place objects in specific sections. Implement _address macro to allow users to place objects at a particular address. Placing objects at a memory address: crate a unique section name from varname, address, object type and put that section at specified address. Mark this section a full (size = banksize) so that other objects do not compete for it while placing objects to sections in AsmPrinter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74822 91177308-0d34-0410-b5e6-96231b3b80d8
95 lines
3.8 KiB
C++
95 lines
3.8 KiB
C++
//=====-- PIC16TargetAsmInfo.h - PIC16 asm properties ---------*- C++ -*--====//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declaration of the PIC16TargetAsmInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef PIC16TARGETASMINFO_H
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#define PIC16TARGETASMINFO_H
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#include "PIC16.h"
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#include "llvm/Target/TargetAsmInfo.h"
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#include <vector>
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#include "llvm/Module.h"
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#define DataBankSize 80
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namespace llvm {
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// Forward declaration.
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class PIC16TargetMachine;
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class GlobalVariable;
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// PIC16 Splits the global data into mulitple udata and idata sections.
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// Each udata and idata section needs to contain a list of globals that
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// they contain, in order to avoid scanning over all the global values
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// again and printing only those that match the current section.
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// Keeping values inside the sections make printing a section much easier.
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struct PIC16Section {
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const Section *S_; // Connection to actual Section.
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unsigned Size; // Total size of the objects contained.
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bool SectionPrinted;
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std::vector<const GlobalVariable*> Items;
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PIC16Section (const Section *s) { S_ = s; Size = 0;
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SectionPrinted = false;}
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bool isPrinted() { return SectionPrinted ; }
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void setPrintedStatus(bool status) { SectionPrinted = status ;}
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};
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struct PIC16TargetAsmInfo : public TargetAsmInfo {
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std::string getSectionNameForSym(const std::string &Sym) const;
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PIC16TargetAsmInfo(const PIC16TargetMachine &TM);
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mutable std::vector<PIC16Section *> BSSSections;
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mutable std::vector<PIC16Section *> IDATASections;
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mutable std::vector<PIC16Section *> AutosSections;
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mutable std::vector<PIC16Section *> ROSections;
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mutable PIC16Section *ExternalVarDecls;
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mutable PIC16Section *ExternalVarDefs;
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virtual ~PIC16TargetAsmInfo();
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private:
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const char *RomData8bitsDirective;
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const char *RomData16bitsDirective;
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const char *RomData32bitsDirective;
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const char *getRomDirective(unsigned size) const;
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virtual const char *getASDirective(unsigned size, unsigned AS) const;
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const Section *getBSSSectionForGlobal(const GlobalVariable *GV) const;
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const Section *getIDATASectionForGlobal(const GlobalVariable *GV) const;
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const Section *getSectionForAuto(const GlobalVariable *GV) const;
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const Section *CreateBSSSectionForGlobal(const GlobalVariable *GV,
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std::string Addr = "") const;
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const Section *CreateIDATASectionForGlobal(const GlobalVariable *GV,
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std::string Addr = "") const;
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const Section *getROSectionForGlobal(const GlobalVariable *GV) const;
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const Section *CreateROSectionForGlobal(const GlobalVariable *GV,
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std::string Addr = "") const;
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virtual const Section *SelectSectionForGlobal(const GlobalValue *GV) const;
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const Section * CreateSectionForGlobal(const GlobalValue *GV,
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std::string Addr = "") const;
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public:
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void SetSectionForGVs(Module &M);
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std::vector<PIC16Section *> getBSSSections() const {
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return BSSSections;
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}
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std::vector<PIC16Section *> getIDATASections() const {
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return IDATASections;
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}
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std::vector<PIC16Section *> getAutosSections() const {
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return AutosSections;
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}
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std::vector<PIC16Section *> getROSections() const {
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return ROSections;
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}
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virtual const Section* SectionForGlobal(const GlobalValue *GV) const;
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};
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} // namespace llvm
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#endif
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