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-rw-r--r--llvm/lib/Target/PIC16/PIC16AsmPrinter.cpp47
-rw-r--r--llvm/lib/Target/PIC16/PIC16AsmPrinter.h4
-rw-r--r--llvm/lib/Target/PIC16/PIC16DebugInfo.cpp138
-rw-r--r--llvm/lib/Target/PIC16/PIC16DebugInfo.h93
4 files changed, 282 insertions, 0 deletions
diff --git a/llvm/lib/Target/PIC16/PIC16AsmPrinter.cpp b/llvm/lib/Target/PIC16/PIC16AsmPrinter.cpp
index 3e8ac016edc..738723bbb5e 100644
--- a/llvm/lib/Target/PIC16/PIC16AsmPrinter.cpp
+++ b/llvm/lib/Target/PIC16/PIC16AsmPrinter.cpp
@@ -273,6 +273,8 @@ void PIC16AsmPrinter::EmitRomData (Module &M)
bool PIC16AsmPrinter::doFinalization(Module &M) {
printLibcallDecls();
+ EmitVarDebugInfo(M);
+ O << "\t" << ".EOF\n";
O << "\t" << "END\n";
bool Result = AsmPrinter::doFinalization(M);
return Result;
@@ -384,3 +386,48 @@ void PIC16AsmPrinter::EmitAutos (Module &M)
}
}
}
+
+void PIC16AsmPrinter::EmitVarDebugInfo(Module &M) {
+ GlobalVariable *Root = M.getGlobalVariable("llvm.dbg.global_variables");
+ if (!Root)
+ return;
+
+ O << TAI->getCommentString() << " Debug Information:";
+ Constant *RootC = cast<Constant>(*Root->use_begin());
+ for (Value::use_iterator UI = RootC->use_begin(), UE = Root->use_end();
+ UI != UE; ++UI) {
+ for (Value::use_iterator UUI = UI->use_begin(), UUE = UI->use_end();
+ UUI != UUE; ++UUI) {
+ DIGlobalVariable DIGV(cast<GlobalVariable>(*UUI));
+ DIType Ty = DIGV.getType();
+ unsigned short TypeNo = 0;
+ bool HasAux = false;
+ int Aux[20] = { 0 };
+ std::string TypeName = "";
+ std::string VarName = TAI->getGlobalPrefix()+DIGV.getGlobal()->getName();
+ DbgInfo.PopulateDebugInfo(Ty, TypeNo, HasAux, Aux, TypeName);
+ // Emit debug info only if type information is availaible.
+ if (TypeNo != PIC16Dbg::T_NULL) {
+ O << "\n\t.type " << VarName << ", " << TypeNo;
+ short ClassNo = DbgInfo.getClass(DIGV);
+ O << "\n\t.class " << VarName << ", " << ClassNo;
+ if (HasAux) {
+ if (TypeName != "") {
+ // Emit debug info for structure and union objects after
+ // .dim directive supports structure/union tag name in aux entry.
+ /* O << "\n\t.dim " << VarName << ", 1," << TypeName;
+ for (int i = 0; i<20; i++)
+ O << "," << Aux[i];*/
+ }
+ else {
+ O << "\n\t.dim " << VarName << ", 1" ;
+ for (int i = 0; i<20; i++)
+ O << "," << Aux[i];
+ }
+ }
+ }
+ }
+ }
+ O << "\n";
+}
+
diff --git a/llvm/lib/Target/PIC16/PIC16AsmPrinter.h b/llvm/lib/Target/PIC16/PIC16AsmPrinter.h
index 32a2ebdca91..adcd64d44ea 100644
--- a/llvm/lib/Target/PIC16/PIC16AsmPrinter.h
+++ b/llvm/lib/Target/PIC16/PIC16AsmPrinter.h
@@ -17,6 +17,8 @@
#include "PIC16.h"
#include "PIC16TargetMachine.h"
+#include "PIC16DebugInfo.h"
+#include "llvm/Analysis/DebugInfo.h"
#include "PIC16TargetAsmInfo.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/Support/CommandLine.h"
@@ -53,6 +55,7 @@ namespace llvm {
void EmitRomData (Module &M);
void emitFunctionData(MachineFunction &MF);
void printLibcallDecls(void);
+ void EmitVarDebugInfo (Module &M);
protected:
bool doInitialization(Module &M);
@@ -60,6 +63,7 @@ namespace llvm {
private:
PIC16TargetLowering *PTLI;
+ PIC16DbgInfo DbgInfo;
const PIC16TargetAsmInfo *PTAI;
std::list<const char *> LibcallDecls; // List of extern decls.
};
diff --git a/llvm/lib/Target/PIC16/PIC16DebugInfo.cpp b/llvm/lib/Target/PIC16/PIC16DebugInfo.cpp
new file mode 100644
index 00000000000..166d96e9f65
--- /dev/null
+++ b/llvm/lib/Target/PIC16/PIC16DebugInfo.cpp
@@ -0,0 +1,138 @@
+//===-- PIC16DebugInfo.cpp - Implementation for PIC16 Debug Information ======//
+//
+// 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 helper functions for representing debug information.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PIC16.h"
+#include "PIC16DebugInfo.h"
+#include "llvm/GlobalVariable.h"
+
+using namespace llvm;
+
+void PIC16DbgInfo::PopulateDebugInfo(DIType Ty, unsigned short &TypeNo,
+ bool &HasAux, int Aux[],
+ std::string &TypeName) {
+ if (Ty.isBasicType(Ty.getTag())) {
+ std::string Name = "";
+ Ty.getName(Name);
+ unsigned short BaseTy = GetTypeDebugNumber(Name);
+ TypeNo = TypeNo << PIC16Dbg::S_BASIC;
+ TypeNo = TypeNo | (0xffff & BaseTy);
+ }
+ else if (Ty.isDerivedType(Ty.getTag())) {
+ switch(Ty.getTag())
+ {
+ case dwarf::DW_TAG_pointer_type:
+ TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
+ TypeNo = TypeNo | PIC16Dbg::DT_PTR;
+ break;
+ default:
+ TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
+ }
+ DIType BaseType = DIDerivedType(Ty.getGV()).getTypeDerivedFrom();
+ PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TypeName);
+ }
+ else if (Ty.isCompositeType(Ty.getTag())) {
+ switch (Ty.getTag()) {
+ case dwarf::DW_TAG_array_type: {
+ DICompositeType CTy = DICompositeType(Ty.getGV());
+ DIArray Elements = CTy.getTypeArray();
+ unsigned short size = 1;
+ unsigned short Dimension[4]={0,0,0,0};
+ for (unsigned i = 0, N = Elements.getNumElements(); i < N; ++i) {
+ DIDescriptor Element = Elements.getElement(i);
+ if (Element.getTag() == dwarf::DW_TAG_subrange_type) {
+ TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
+ TypeNo = TypeNo | PIC16Dbg::DT_ARY;
+ DISubrange SubRange = DISubrange(Element.getGV());
+ Dimension[i] = SubRange.getHi() - SubRange.getLo() + 1;
+ // Each dimension is represented by 2 bytes starting at byte 9.
+ Aux[8+i*2+0] = Dimension[i];
+ Aux[8+i*2+1] = Dimension[i] >> 8;
+ size = size * Dimension[i];
+ }
+ }
+ HasAux = true;
+ // In auxillary entry for array, 7th and 8th byte represent array size.
+ Aux[6] = size;
+ Aux[7] = size >> 8;
+ DIType BaseType = CTy.getTypeDerivedFrom();
+ PopulateDebugInfo(BaseType, TypeNo, HasAux, Aux, TypeName);
+
+ break;
+ }
+ case dwarf:: DW_TAG_union_type:
+ case dwarf::DW_TAG_structure_type: {
+ DICompositeType CTy = DICompositeType(Ty.getGV());
+ TypeNo = TypeNo << PIC16Dbg::S_BASIC;
+ if (Ty.getTag() == dwarf::DW_TAG_structure_type)
+ TypeNo = TypeNo | PIC16Dbg::T_STRUCT;
+ else
+ TypeNo = TypeNo | PIC16Dbg::T_UNION;
+ CTy.getName(TypeName);
+ unsigned size = CTy.getSizeInBits()/8;
+ // 7th and 8th byte represent size.
+ HasAux = true;
+ Aux[6] = size;
+ Aux[7] = size >> 8;
+ break;
+ }
+ case dwarf::DW_TAG_enumeration_type: {
+ TypeNo = TypeNo << PIC16Dbg::S_BASIC;
+ TypeNo = TypeNo | PIC16Dbg::T_ENUM;
+ break;
+ }
+ default:
+ TypeNo = TypeNo << PIC16Dbg::S_DERIVED;
+ }
+ }
+ else {
+ TypeNo = PIC16Dbg::T_NULL;
+ HasAux = false;
+ }
+ return;
+}
+
+
+unsigned PIC16DbgInfo::GetTypeDebugNumber(std::string &type) {
+ if (type == "char")
+ return PIC16Dbg::T_CHAR;
+ else if (type == "short")
+ return PIC16Dbg::T_SHORT;
+ else if (type == "int")
+ return PIC16Dbg::T_INT;
+ else if (type == "long")
+ return PIC16Dbg::T_LONG;
+ else if (type == "unsigned char")
+ return PIC16Dbg::T_UCHAR;
+ else if (type == "unsigned short")
+ return PIC16Dbg::T_USHORT;
+ else if (type == "unsigned int")
+ return PIC16Dbg::T_UINT;
+ else if (type == "unsigned long")
+ return PIC16Dbg::T_ULONG;
+ else
+ return 0;
+}
+
+short PIC16DbgInfo::getClass(DIGlobalVariable DIGV) {
+ short ClassNo;
+ if (PAN::isLocalName(DIGV.getGlobal()->getName())) {
+ // Generating C_AUTO here fails due to error in linker. Change it once
+ // linker is fixed.
+ ClassNo = PIC16Dbg::C_STAT;
+ }
+ else if (DIGV.isLocalToUnit())
+ ClassNo = PIC16Dbg::C_STAT;
+ else
+ ClassNo = PIC16Dbg::C_EXT;
+ return ClassNo;
+}
diff --git a/llvm/lib/Target/PIC16/PIC16DebugInfo.h b/llvm/lib/Target/PIC16/PIC16DebugInfo.h
new file mode 100644
index 00000000000..582d821eb30
--- /dev/null
+++ b/llvm/lib/Target/PIC16/PIC16DebugInfo.h
@@ -0,0 +1,93 @@
+//===-- PIC16DebugInfo.h - Interfaces for PIC16 Debug Information ============//
+//
+// 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 helper functions for representing debug information.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef PIC16DBG_H
+#define PIC16DBG_H
+
+#include "llvm/Analysis/DebugInfo.h"
+
+namespace llvm {
+ namespace PIC16Dbg {
+ enum VarType {
+ T_NULL,
+ T_VOID,
+ T_CHAR,
+ T_SHORT,
+ T_INT,
+ T_LONG,
+ T_FLOAT,
+ T_DOUBLE,
+ T_STRUCT,
+ T_UNION,
+ T_ENUM,
+ T_MOE,
+ T_UCHAR,
+ T_USHORT,
+ T_UINT,
+ T_ULONG
+ };
+ enum DerivedType {
+ DT_NONE,
+ DT_PTR,
+ DT_FCN,
+ DT_ARY
+ };
+ enum TypeSize {
+ S_BASIC = 5,
+ S_DERIVED = 3
+ };
+ enum DbgClass {
+ C_NULL,
+ C_AUTO,
+ C_EXT,
+ C_STAT,
+ C_REG,
+ C_EXTDEF,
+ C_LABEL,
+ C_ULABEL,
+ C_MOS,
+ C_ARG,
+ C_STRTAG,
+ C_MOU,
+ C_UNTAG,
+ C_TPDEF,
+ C_USTATIC,
+ C_ENTAG,
+ C_MOE,
+ C_REGPARM,
+ C_FIELD,
+ C_AUTOARG,
+ C_LASTENT,
+ C_BLOCK = 100,
+ C_FCN,
+ C_EOS,
+ C_FILE,
+ C_LINE,
+ C_ALIAS,
+ C_HIDDEN,
+ C_EOF,
+ C_LIST,
+ C_SECTION,
+ C_EFCN = 255
+ };
+ }
+
+ class PIC16DbgInfo {
+ public:
+ void PopulateDebugInfo(DIType Ty, unsigned short &TypeNo, bool &HasAux,
+ int Aux[], std::string &TypeName);
+ unsigned GetTypeDebugNumber(std::string &type);
+ short getClass(DIGlobalVariable DIGV);
+ };
+} // end namespace llvm;
+#endif
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