#ifndef LLVM_TARGET_PIC16_H
#define LLVM_TARGET_PIC16_H
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Target/TargetMachine.h"
#include <iosfwd>
#include <cassert>
+#include <sstream>
+#include <cstring>
#include <string>
namespace llvm {
UGE
};
}
- // A Central object to manage all ABI naming conventions.
- class PIC16ABINames {
+ // 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.
- // they are prefixed with @
// These are maily function names and global variable names.
+ // Example - @foo, @i
// -------------------------------------------------------
// Functions and auto variables.
- // Names are mangled as <prefix><funcname>.<id>.<varname>
- // Where prefix is a special char '@' and id is any one of
+ // 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.
// Its temp data: @foo.temp.
// Its arg passing: @foo.args.
//----------------------------------------------
- // Libcall - compiler generated libcall names must have a .lib.
+ // Libcall - compiler generated libcall names must start with .lib.
// This id will be used to emit extern decls for libcalls.
- // Example - libcall name: @sra_i8.lib.
- // To pass args: @sra_i8.args.
- // To return val: @sra_i8.ret.
+ // 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.
+ //----------------------------------------------------------
- enum IDs {
+ // Tags used to mangle different names.
+ enum TAGS {
PREFIX_SYMBOL,
-
- FUNC_AUTOS,
- FUNC_FRAME,
- FUNC_RET,
- FUNC_ARGS,
- FUNC_TEMPS,
+ GLOBAL,
+ STATIC_LOCAL,
+ AUTOS_LABEL,
+ FRAME_LABEL,
+ RET_LABEL,
+ ARGS_LABEL,
+ TEMPS_LABEL,
LIBCALL,
FRAME_SECTION,
- AUTOS_SECTION
- };
+ AUTOS_SECTION,
+ CODE_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.";
+ }
+ }
+
+ // 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;
- inline static const char *getIDName(PIC16ABINames::IDs id) {
- switch (id) {
- default: assert(0 && "Unknown id");
- case PIC16ABINames::PREFIX_SYMBOL: return "@";
- case PIC16ABINames::FUNC_AUTOS: return ".auto.";
- case PIC16ABINames::FUNC_FRAME: return ".frame.";
- case PIC16ABINames::FUNC_TEMPS: return ".temp.";
- case PIC16ABINames::FUNC_ARGS: return ".args.";
- case PIC16ABINames::FUNC_RET: return ".ret.";
- case PIC16ABINames::FRAME_SECTION: return "fpdata";
- case PIC16ABINames::AUTOS_SECTION: return "fadata";
+ 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.
}
- }
- inline static PIC16ABINames::IDs getID(const std::string &Sym) {
- if (Sym.find(getIDName(PIC16ABINames::FUNC_TEMPS)))
- return PIC16ABINames::FUNC_TEMPS;
+ // 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 (Sym.find(getIDName(PIC16ABINames::FUNC_FRAME)))
- return PIC16ABINames::FUNC_FRAME;
+ // If this name already has a prefix, nothing to do.
+ if (Name.compare(0, prefix.size(), prefix) == 0)
+ return Name;
- if (Sym.find(getIDName(PIC16ABINames::FUNC_RET)))
- return PIC16ABINames::FUNC_RET;
+ return prefix + Name;
+ }
- if (Sym.find(getIDName(PIC16ABINames::FUNC_ARGS)))
- return PIC16ABINames::FUNC_ARGS;
+ // 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");
- if (Sym.find(getIDName(PIC16ABINames::FUNC_AUTOS)))
- return PIC16ABINames::FUNC_AUTOS;
+ std::string Sym = addPrefix(Sym1);
- if (Sym.find(getIDName(PIC16ABINames::LIBCALL)))
- return PIC16ABINames::LIBCALL;
+ // Position of the . after func name. That's where func name ends.
+ size_t func_name_end = Sym.find ('.');
- // It does not have any ID. So its a global.
- assert (0 && "Could not determine ID symbol type");
+ 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 + "# UDATA_OVR";
+ }
+
+ static std::string getAutosSectionName(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(AUTOS_SECTION);
+ return Func1 + tag + "# UDATA_OVR";
+ }
+
+ static std::string getCodeSectionName(const std::string &Func) {
+ std::string Func1 = addPrefix(Func);
+ std::string tag = getTagName(CODE_SECTION);
+ return Func1 + tag + "# CODE";
+ }
+
+ // 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
+ << ".# UDATA";
+ return o.str();
+ }
+
+ static std::string getRomdataSectionName(unsigned num,
+ std::string prefix = "") {
+ std::ostringstream o;
+ o << getTagName(PREFIX_SYMBOL) << prefix << "romdata." << num
+ << ".# ROMDATA";
+ return o.str();
+ }
+
+ static std::string getIdataSectionName(unsigned num,
+ std::string prefix = "") {
+ std::ostringstream o;
+ o << getTagName(PREFIX_SYMBOL) << prefix << "idata." << num
+ << ".# IDATA";
+ return o.str();
+ }
+
+ inline static bool isLocalName (const std::string &Name) {
+ if (getSymbolTag(Name) == AUTOS_LABEL)
+ 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.
+
+
+ // External symbol names require memory to live till the program end.
+ // So we have to allocate it and keep.
+ inline static const char *createESName (const std::string &name) {
+ char *tmpName = new char[name.size() + 1];
+ strcpy (tmpName, name.c_str());
+ return tmpName;
}
+
inline static const char *PIC16CondCodeToString(PIC16CC::CondCodes CC) {
switch (CC) {
- default: assert(0 && "Unknown condition code");
+ default: LLVM_UNREACHABLE("Unknown condition code");
case PIC16CC::NE: return "ne";
case PIC16CC::EQ: return "eq";
case PIC16CC::LT: return "lt";
case PIC16CC::ULT: return "lt";
case PIC16CC::LE: return "le";
+ case PIC16CC::ULE: return "le";
case PIC16CC::GT: return "gt";
case PIC16CC::UGT: return "gt";
case PIC16CC::GE: return "ge";
+ case PIC16CC::UGE: return "ge";
}
}
inline static bool isSignedComparison(PIC16CC::CondCodes CC) {
switch (CC) {
- default: assert(0 && "Unknown condition code");
+ default: LLVM_UNREACHABLE("Unknown condition code");
case PIC16CC::NE:
case PIC16CC::EQ:
case PIC16CC::LT:
FunctionPass *createPIC16ISelDag(PIC16TargetMachine &TM);
FunctionPass *createPIC16CodePrinterPass(raw_ostream &OS,
PIC16TargetMachine &TM,
- CodeGenOpt::Level OptLevel,
bool Verbose);
// Banksel optimzer pass.
FunctionPass *createPIC16MemSelOptimizerPass();
- std::string getSectionNameForSym(const std::string &Sym);
} // end namespace llvm;
// Defines symbolic names for PIC16 registers. This defines a mapping from
projects / oota-llvm.git / blobdiff