--- /dev/null
+//===-- PIC16ABINames.h - PIC16 Naming conventios for ABI----- --*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains the functions to manage ABI Naming conventions for PIC16.
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TARGET_PIC16ABINAMES_H
+#define LLVM_TARGET_PIC16ABINAMES_H
+
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Target/TargetMachine.h"
+#include <cassert>
+#include <sstream>
+#include <cstring>
+#include <string>
+
+namespace llvm {
+ class PIC16TargetMachine;
+ class FunctionPass;
+ class MachineCodeEmitter;
+ class formatted_raw_ostream;
+
+ // A Central class to manage all ABI naming conventions.
+ // PAN - [P]ic16 [A]BI [N]ames
+ class PAN {
+ public:
+ // Map the name of the symbol to its section name.
+ // Current ABI:
+ // -----------------------------------------------------
+ // ALL Names are prefixed with the symobl '@'.
+ // ------------------------------------------------------
+ // Global variables do not have any '.' in their names.
+ // These are maily function names and global variable names.
+ // Example - @foo, @i
+ // -------------------------------------------------------
+ // Functions and auto variables.
+ // Names are mangled as <prefix><funcname>.<tag>.<varname>
+ // Where <prefix> is '@' and <tag> is any one of
+ // the following
+ // .auto. - an automatic var of a function.
+ // .temp. - temproray data of a function.
+ // .ret. - return value label for a function.
+ // .frame. - Frame label for a function where retval, args
+ // and temps are stored.
+ // .args. - Label used to pass arguments to a direct call.
+ // Example - Function name: @foo
+ // Its frame: @foo.frame.
+ // Its retval: @foo.ret.
+ // Its local vars: @foo.auto.a
+ // Its temp data: @foo.temp.
+ // Its arg passing: @foo.args.
+ //----------------------------------------------
+ // Libcall - compiler generated libcall names must start with .lib.
+ // This id will be used to emit extern decls for libcalls.
+ // Example - libcall name: @.lib.sra.i8
+ // To pass args: @.lib.sra.i8.args.
+ // To return val: @.lib.sra.i8.ret.
+ //----------------------------------------------
+ // SECTION Names
+ // uninitialized globals - @udata.<num>.#
+ // initialized globals - @idata.<num>.#
+ // Function frame - @<func>.frame_section.
+ // Function autos - @<func>.autos_section.
+ // Declarations - Enclosed in comments. No section for them.
+ //----------------------------------------------------------
+
+ // Tags used to mangle different names.
+ enum TAGS {
+ PREFIX_SYMBOL,
+ GLOBAL,
+ STATIC_LOCAL,
+ AUTOS_LABEL,
+ FRAME_LABEL,
+ RET_LABEL,
+ ARGS_LABEL,
+ TEMPS_LABEL,
+
+ LIBCALL,
+
+ FRAME_SECTION,
+ AUTOS_SECTION,
+ CODE_SECTION,
+ USER_SECTION
+ };
+
+ // Textual names of the tags.
+ inline static const char *getTagName(TAGS tag) {
+ switch (tag) {
+ default: return "";
+ case PREFIX_SYMBOL: return "@";
+ case AUTOS_LABEL: return ".auto.";
+ case FRAME_LABEL: return ".frame.";
+ case TEMPS_LABEL: return ".temp.";
+ case ARGS_LABEL: return ".args.";
+ case RET_LABEL: return ".ret.";
+ case LIBCALL: return ".lib.";
+ case FRAME_SECTION: return ".frame_section.";
+ case AUTOS_SECTION: return ".autos_section.";
+ case CODE_SECTION: return ".code_section.";
+ case USER_SECTION: return ".user_section.";
+ }
+ }
+
+ // Get tag type for the Symbol.
+ inline static TAGS getSymbolTag(const std::string &Sym) {
+ if (Sym.find(getTagName(TEMPS_LABEL)) != std::string::npos)
+ return TEMPS_LABEL;
+
+ if (Sym.find(getTagName(FRAME_LABEL)) != std::string::npos)
+ return FRAME_LABEL;
+
+ if (Sym.find(getTagName(RET_LABEL)) != std::string::npos)
+ return RET_LABEL;
+
+ if (Sym.find(getTagName(ARGS_LABEL)) != std::string::npos)
+ return ARGS_LABEL;
+
+ if (Sym.find(getTagName(AUTOS_LABEL)) != std::string::npos)
+ return AUTOS_LABEL;
+
+ if (Sym.find(getTagName(LIBCALL)) != std::string::npos)
+ return LIBCALL;
+
+ // It does not have any Tag. So its a true global or static local.
+ if (Sym.find(".") == std::string::npos)
+ return GLOBAL;
+
+ // If a . is there, then it may be static local.
+ // We should mangle these as well in clang.
+ if (Sym.find(".") != std::string::npos)
+ return STATIC_LOCAL;
+
+ assert (0 && "Could not determine Symbol's tag");
+ return PREFIX_SYMBOL; // Silence warning when assertions are turned off.
+ }
+
+ // addPrefix - add prefix symbol to a name if there isn't one already.
+ inline static std::string addPrefix (const std::string &Name) {
+ std::string prefix = getTagName (PREFIX_SYMBOL);
+
+ // If this name already has a prefix, nothing to do.
+ if (Name.compare(0, prefix.size(), prefix) == 0)
+ return Name;
+
+ return prefix + Name;
+ }
+
+ // Get mangled func name from a mangled sym name.
+ // In all cases func name is the first component before a '.'.
+ static inline std::string getFuncNameForSym(const std::string &Sym1) {
+ assert (getSymbolTag(Sym1) != GLOBAL && "not belongs to a function");
+
+ std::string Sym = addPrefix(Sym1);
+
+ // Position of the . after func name. That's where func name ends.
+ size_t func_name_end = Sym.find ('.');
+
+ return Sym.substr (0, func_name_end);
+ }
+
+ // Get Frame start label for a func.
+ static std::string getFrameLabel(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(FRAME_LABEL);
+ return Func1 + tag;
+ }
+
+ static std::string getRetvalLabel(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(RET_LABEL);
+ return Func1 + tag;
+ }
+
+ static std::string getArgsLabel(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(ARGS_LABEL);
+ return Func1 + tag;
+ }
+
+ static std::string getTempdataLabel(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(TEMPS_LABEL);
+ return Func1 + tag;
+ }
+
+ static std::string getFrameSectionName(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(FRAME_SECTION);
+ return Func1 + tag + "#";
+ }
+
+ static std::string getAutosSectionName(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(AUTOS_SECTION);
+ return Func1 + tag + "#";
+ }
+
+ static std::string getCodeSectionName(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(CODE_SECTION);
+ return Func1 + tag + "#";
+ }
+
+ static std::string getUserSectionName(const std::string &Name) {
+ std::string sname = addPrefix(Name);;
+ std::string tag = getTagName(USER_SECTION);
+ return sname + tag + "#";
+ }
+
+ // udata, romdata and idata section names are generated by a given number.
+ // @udata.<num>.#
+ static std::string getUdataSectionName(unsigned num,
+ std::string prefix = "") {
+ std::ostringstream o;
+ o << getTagName(PREFIX_SYMBOL) << prefix << "udata." << num
+ << ".#";
+ return o.str();
+ }
+
+ static std::string getRomdataSectionName() {
+ return "romdata.#";
+ }
+
+ static std::string getRomdataSectionName(unsigned num,
+ std::string prefix = "") {
+ std::ostringstream o;
+ o << getTagName(PREFIX_SYMBOL) << prefix << "romdata." << num
+ << ".#";
+ return o.str();
+ }
+
+ static std::string getIdataSectionName(unsigned num,
+ std::string prefix = "") {
+ std::ostringstream o;
+ o << getTagName(PREFIX_SYMBOL) << prefix << "idata." << num
+ << ".#";
+ return o.str();
+ }
+
+ inline static bool isLocalName (const std::string &Name) {
+ if (getSymbolTag(Name) == AUTOS_LABEL)
+ return true;
+
+ return false;
+ }
+
+ inline static bool isMemIntrinsic (const std::string &Name) {
+ if (Name.compare("@memcpy") == 0 || Name.compare("@memset") == 0 ||
+ Name.compare("@memmove") == 0) {
+ return true;
+ }
+
+ return false;
+ }
+
+ inline static bool isLocalToFunc (std::string &Func, std::string &Var) {
+ if (! isLocalName(Var)) return false;
+
+ std::string Func1 = addPrefix(Func);
+ // Extract func name of the varilable.
+ const std::string &fname = getFuncNameForSym(Var);
+
+ if (fname.compare(Func1) == 0)
+ return true;
+
+ return false;
+ }
+
+
+ // Get the section for the given external symbol names.
+ // This tries to find the type (Tag) of the symbol from its mangled name
+ // and return appropriate section name for it.
+ static inline std::string getSectionNameForSym(const std::string &Sym1) {
+ std::string Sym = addPrefix(Sym1);
+
+ std::string SectionName;
+
+ std::string Fname = getFuncNameForSym (Sym);
+ TAGS id = getSymbolTag (Sym);
+
+ switch (id) {
+ default : assert (0 && "Could not determine external symbol type");
+ case FRAME_LABEL:
+ case RET_LABEL:
+ case TEMPS_LABEL:
+ case ARGS_LABEL: {
+ return getFrameSectionName(Fname);
+ }
+ case AUTOS_LABEL: {
+ return getAutosSectionName(Fname);
+ }
+ }
+ }
+ }; // class PAN.
+} // end namespace llvm;
+
+#endif
--- /dev/null
+//===-- PIC16Section.cpp - PIC16 Section ----------- --------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PIC16.h"
+#include "PIC16ABINames.h"
+#include "PIC16Section.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+
+// This is the only way to create a PIC16Section. Sections created here
+// do not need to be explicitly deleted as they are managed by auto_ptrs.
+PIC16Section *PIC16Section::Create(const StringRef &Name,
+ PIC16SectionType Ty,
+ const std::string &Address,
+ int Color, MCContext &Ctx) {
+
+ /// Determine the internal SectionKind info.
+ /// Users of PIC16Section class should not need to know the internal
+ /// SectionKind. They should work only with PIC16SectionType.
+ ///
+ /// PIC16 Terminology for section kinds is as below.
+ /// UDATA - BSS
+ /// IDATA - initialized data (equiv to Metadata)
+ /// ROMDATA - ReadOnly.
+ /// UDATA_OVR - Sections that can be overlaid. Section of such type is
+ /// used to contain function autos an frame. We can think of
+ /// it as equiv to llvm ThreadBSS)
+ /// UDATA_SHR - Shared RAM. Memory area that is mapped to all banks.
+
+ SectionKind K;
+ switch (Ty) {
+ default: llvm_unreachable ("can not create unknown section type");
+ case UDATA_OVR: {
+ K = SectionKind::getThreadBSS();
+ break;
+ }
+ case UDATA_SHR:
+ case UDATA: {
+ K = SectionKind::getBSS();
+ break;
+ }
+ case ROMDATA:
+ case IDATA: {
+ K = SectionKind::getMetadata();
+ break;
+ }
+ case CODE: {
+ K = SectionKind::getText();
+ break;
+ }
+
+ }
+
+ // Create the Section.
+ PIC16Section *S = new (Ctx) PIC16Section(Name, K, Address, Color);
+ S->T = Ty;
+ return S;
+}
+
+// A generic way to print all types of sections.
+void PIC16Section::PrintSwitchToSection(const MCAsmInfo &MAI,
+ raw_ostream &OS) const {
+ // Print name.
+ OS << getName() << '\t';
+
+ // Print type.
+ switch (getType()) {
+ default : llvm_unreachable ("unknown section type");
+ case UDATA: OS << "UDATA"; break;
+ case IDATA: OS << "IDATA"; break;
+ case ROMDATA: OS << "ROMDATA"; break;
+ case UDATA_SHR: OS << "UDATA_SHR"; break;
+ case UDATA_OVR: OS << "UDATA_OVR"; break;
+ case CODE: OS << "CODE"; break;
+ }
+
+ OS << '\t';
+
+ // Print Address.
+ OS << Address;
+
+ OS << '\n';
+}
--- /dev/null
+//===- PIC16Section.h - PIC16-specific section representation -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the PIC16Section class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_PIC16SECTION_H
+#define LLVM_PIC16SECTION_H
+
+#include "llvm/MC/MCSection.h"
+#include "llvm/GlobalVariable.h"
+#include <vector>
+
+namespace llvm {
+ /// PIC16Section - Represents a physical section in PIC16 COFF.
+ /// Contains data objects.
+ ///
+ class PIC16Section : public MCSection {
+ /// PIC16 Sections does not really use the SectionKind class to
+ /// to distinguish between various types of sections. PIC16 maintain
+ /// its own Section Type info. See the PIC16SectionType enum in PIC16.h
+ /// for various section types.
+ PIC16SectionType T;
+
+ /// Name of the section to uniquely identify it.
+ std::string Name;
+
+ /// User can specify an address at which a section should be placed.
+ /// Negative value here means user hasn't specified any.
+ std::string Address;
+
+ /// Overlay information - Sections with same color can be overlaid on
+ /// one another.
+ int Color;
+
+ /// Total size of all data objects contained here.
+ unsigned Size;
+
+ PIC16Section(const StringRef &name, SectionKind K, const std::string &addr,
+ int color)
+ : MCSection(K), Name(name), Address(addr), Color(color) {
+ }
+
+ public:
+ /// Return the name of the section.
+ const std::string &getName() const { return Name; }
+
+ /// Return the Address of the section.
+ const std::string &getAddress() const { return Address; }
+
+ /// Return the Color of the section.
+ int getColor() const { return Color; }
+
+ /// Return the size of the section.
+ unsigned getSize() const { return Size; }
+ void setSize(unsigned size) { Size = size; }
+
+ /// Conatined data objects.
+ std::vector<const GlobalVariable *>Items;
+
+ /// Check section type.
+ bool isUDATA_Type() const { return T == UDATA; }
+ bool isIDATA_Type() const { return T == IDATA; }
+ bool isROMDATA_Type() const { return T == ROMDATA; }
+ bool isUDATA_OVR_Type() const { return T == UDATA_OVR; }
+ bool isUDATA_SHR_Type() const { return T == UDATA_SHR; }
+ bool isCODE_Type() const { return T == CODE; }
+
+ PIC16SectionType getType() const { return T; }
+
+ /// This would be the only way to create a section.
+ static PIC16Section *Create(const StringRef &Name, PIC16SectionType Ty,
+ const std::string &Address, int Color,
+ MCContext &Ctx);
+
+ /// Override this as PIC16 has its own way of printing switching
+ /// to a section.
+ virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
+ raw_ostream &OS) const;
+ };
+
+} // end namespace llvm
+
+#endif
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