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-rw-r--r--include/llvm/CodeGen/ELFWriter.h101
-rw-r--r--include/llvm/CodeGen/MachOWriter.h100
2 files changed, 191 insertions, 10 deletions
diff --git a/include/llvm/CodeGen/ELFWriter.h b/include/llvm/CodeGen/ELFWriter.h
index 7b7a91c..b391479 100644
--- a/include/llvm/CodeGen/ELFWriter.h
+++ b/include/llvm/CodeGen/ELFWriter.h
@@ -22,7 +22,6 @@ namespace llvm {
class Mangler;
class MachineCodeEmitter;
class ELFCodeEmitter;
- class TargetObjInfo;
/// ELFWriter - This class implements the common target-independent code for
/// writing ELF files. Targets should derive a class from this to
@@ -50,10 +49,6 @@ namespace llvm {
///
TargetMachine &TM;
- /// Target object writer info.
- ///
- const TargetObjInfo *TOI;
-
/// Mang - The object used to perform name mangling for this module.
///
Mangler *Mang;
@@ -219,6 +214,102 @@ namespace llvm {
unsigned ELFHeader_e_shoff_Offset; // e_shoff in ELF header.
unsigned ELFHeader_e_shstrndx_Offset; // e_shstrndx in ELF header.
unsigned ELFHeader_e_shnum_Offset; // e_shnum in ELF header.
+
+
+ // align - Emit padding into the file until the current output position is
+ // aligned to the specified power of two boundary.
+ static void align(DataBuffer &Output, unsigned Boundary) {
+ assert(Boundary && (Boundary & (Boundary-1)) == 0 &&
+ "Must align to 2^k boundary");
+ size_t Size = Output.size();
+ if (Size & (Boundary-1)) {
+ // Add padding to get alignment to the correct place.
+ size_t Pad = Boundary-(Size & (Boundary-1));
+ Output.resize(Size+Pad);
+ }
+ }
+
+ static void outbyte(DataBuffer &Output, unsigned char X) {
+ Output.push_back(X);
+ }
+ void outhalf(DataBuffer &Output, unsigned short X) {
+ if (isLittleEndian) {
+ Output.push_back(X&255);
+ Output.push_back(X >> 8);
+ } else {
+ Output.push_back(X >> 8);
+ Output.push_back(X&255);
+ }
+ }
+ void outword(DataBuffer &Output, unsigned X) {
+ if (isLittleEndian) {
+ Output.push_back((X >> 0) & 255);
+ Output.push_back((X >> 8) & 255);
+ Output.push_back((X >> 16) & 255);
+ Output.push_back((X >> 24) & 255);
+ } else {
+ Output.push_back((X >> 24) & 255);
+ Output.push_back((X >> 16) & 255);
+ Output.push_back((X >> 8) & 255);
+ Output.push_back((X >> 0) & 255);
+ }
+ }
+ void outxword(DataBuffer &Output, uint64_t X) {
+ if (isLittleEndian) {
+ Output.push_back(unsigned(X >> 0) & 255);
+ Output.push_back(unsigned(X >> 8) & 255);
+ Output.push_back(unsigned(X >> 16) & 255);
+ Output.push_back(unsigned(X >> 24) & 255);
+ Output.push_back(unsigned(X >> 32) & 255);
+ Output.push_back(unsigned(X >> 40) & 255);
+ Output.push_back(unsigned(X >> 48) & 255);
+ Output.push_back(unsigned(X >> 56) & 255);
+ } else {
+ Output.push_back(unsigned(X >> 56) & 255);
+ Output.push_back(unsigned(X >> 48) & 255);
+ Output.push_back(unsigned(X >> 40) & 255);
+ Output.push_back(unsigned(X >> 32) & 255);
+ Output.push_back(unsigned(X >> 24) & 255);
+ Output.push_back(unsigned(X >> 16) & 255);
+ Output.push_back(unsigned(X >> 8) & 255);
+ Output.push_back(unsigned(X >> 0) & 255);
+ }
+ }
+ void outaddr32(DataBuffer &Output, unsigned X) {
+ outword(Output, X);
+ }
+ void outaddr64(DataBuffer &Output, uint64_t X) {
+ outxword(Output, X);
+ }
+ void outaddr(DataBuffer &Output, uint64_t X) {
+ if (!is64Bit)
+ outword(Output, (unsigned)X);
+ else
+ outxword(Output, X);
+ }
+
+ // fix functions - Replace an existing entry at an offset.
+ void fixhalf(DataBuffer &Output, unsigned short X, unsigned Offset) {
+ unsigned char *P = &Output[Offset];
+ P[0] = (X >> (isLittleEndian ? 0 : 8)) & 255;
+ P[1] = (X >> (isLittleEndian ? 8 : 0)) & 255;
+ }
+
+ void fixword(DataBuffer &Output, unsigned X, unsigned Offset) {
+ unsigned char *P = &Output[Offset];
+ P[0] = (X >> (isLittleEndian ? 0 : 24)) & 255;
+ P[1] = (X >> (isLittleEndian ? 8 : 16)) & 255;
+ P[2] = (X >> (isLittleEndian ? 16 : 8)) & 255;
+ P[3] = (X >> (isLittleEndian ? 24 : 0)) & 255;
+ }
+
+ void fixaddr(DataBuffer &Output, uint64_t X, unsigned Offset) {
+ if (!is64Bit)
+ fixword(Output, (unsigned)X, Offset);
+ else
+ assert(0 && "Emission of 64-bit data not implemented yet!");
+ }
+
private:
void EmitGlobal(GlobalVariable *GV);
diff --git a/include/llvm/CodeGen/MachOWriter.h b/include/llvm/CodeGen/MachOWriter.h
index 0b33c04..cf53907 100644
--- a/include/llvm/CodeGen/MachOWriter.h
+++ b/include/llvm/CodeGen/MachOWriter.h
@@ -25,7 +25,6 @@ namespace llvm {
class Mangler;
class MachineCodeEmitter;
class MachOCodeEmitter;
- class TargetObjInfo;
/// MachOSym - This struct contains information about each symbol that is
/// added to logical symbol table for the module. This is eventually
@@ -101,10 +100,6 @@ namespace llvm {
///
TargetMachine &TM;
- /// Target object writer info.
- ///
- const TargetObjInfo *TOI;
-
/// Mang - The object used to perform name mangling for this module.
///
Mangler *Mang;
@@ -664,6 +659,101 @@ namespace llvm {
/// SymbolTable to aid in emitting the DYSYMTAB load command.
std::vector<unsigned> DynamicSymbolTable;
+ // align - Emit padding into the file until the current output position is
+ // aligned to the specified power of two boundary.
+ static void align(DataBuffer &Output, unsigned Boundary) {
+ assert(Boundary && (Boundary & (Boundary-1)) == 0 &&
+ "Must align to 2^k boundary");
+ size_t Size = Output.size();
+ if (Size & (Boundary-1)) {
+ // Add padding to get alignment to the correct place.
+ size_t Pad = Boundary-(Size & (Boundary-1));
+ Output.resize(Size+Pad);
+ }
+ }
+
+ void outbyte(DataBuffer &Output, unsigned char X) {
+ Output.push_back(X);
+ }
+ void outhalf(DataBuffer &Output, unsigned short X) {
+ if (isLittleEndian) {
+ Output.push_back(X&255);
+ Output.push_back(X >> 8);
+ } else {
+ Output.push_back(X >> 8);
+ Output.push_back(X&255);
+ }
+ }
+ void outword(DataBuffer &Output, unsigned X) {
+ if (isLittleEndian) {
+ Output.push_back((X >> 0) & 255);
+ Output.push_back((X >> 8) & 255);
+ Output.push_back((X >> 16) & 255);
+ Output.push_back((X >> 24) & 255);
+ } else {
+ Output.push_back((X >> 24) & 255);
+ Output.push_back((X >> 16) & 255);
+ Output.push_back((X >> 8) & 255);
+ Output.push_back((X >> 0) & 255);
+ }
+ }
+ void outxword(DataBuffer &Output, uint64_t X) {
+ if (isLittleEndian) {
+ Output.push_back(unsigned(X >> 0) & 255);
+ Output.push_back(unsigned(X >> 8) & 255);
+ Output.push_back(unsigned(X >> 16) & 255);
+ Output.push_back(unsigned(X >> 24) & 255);
+ Output.push_back(unsigned(X >> 32) & 255);
+ Output.push_back(unsigned(X >> 40) & 255);
+ Output.push_back(unsigned(X >> 48) & 255);
+ Output.push_back(unsigned(X >> 56) & 255);
+ } else {
+ Output.push_back(unsigned(X >> 56) & 255);
+ Output.push_back(unsigned(X >> 48) & 255);
+ Output.push_back(unsigned(X >> 40) & 255);
+ Output.push_back(unsigned(X >> 32) & 255);
+ Output.push_back(unsigned(X >> 24) & 255);
+ Output.push_back(unsigned(X >> 16) & 255);
+ Output.push_back(unsigned(X >> 8) & 255);
+ Output.push_back(unsigned(X >> 0) & 255);
+ }
+ }
+ void outaddr32(DataBuffer &Output, unsigned X) {
+ outword(Output, X);
+ }
+ void outaddr64(DataBuffer &Output, uint64_t X) {
+ outxword(Output, X);
+ }
+ void outaddr(DataBuffer &Output, uint64_t X) {
+ if (!is64Bit)
+ outword(Output, (unsigned)X);
+ else
+ outxword(Output, X);
+ }
+ void outstring(DataBuffer &Output, std::string &S, unsigned Length) {
+ unsigned len_to_copy = S.length() < Length ? S.length() : Length;
+ unsigned len_to_fill = S.length() < Length ? Length-S.length() : 0;
+
+ for (unsigned i = 0; i < len_to_copy; ++i)
+ outbyte(Output, S[i]);
+
+ for (unsigned i = 0; i < len_to_fill; ++i)
+ outbyte(Output, 0);
+
+ }
+ void fixhalf(DataBuffer &Output, unsigned short X, unsigned Offset) {
+ unsigned char *P = &Output[Offset];
+ P[0] = (X >> (isLittleEndian ? 0 : 8)) & 255;
+ P[1] = (X >> (isLittleEndian ? 8 : 0)) & 255;
+ }
+ void fixword(DataBuffer &Output, unsigned X, unsigned Offset) {
+ unsigned char *P = &Output[Offset];
+ P[0] = (X >> (isLittleEndian ? 0 : 24)) & 255;
+ P[1] = (X >> (isLittleEndian ? 8 : 16)) & 255;
+ P[2] = (X >> (isLittleEndian ? 16 : 8)) & 255;
+ P[3] = (X >> (isLittleEndian ? 24 : 0)) & 255;
+ }
+
static void InitMem(const Constant *C, void *Addr, intptr_t Offset,
const TargetData *TD,
std::vector<MachineRelocation> &MRs);
generated by cgit v1.1 at 2025-01-30 21:23:17 +0000