improve comments.

[oota-llvm.git] / include / llvm / CodeGen / JITCodeEmitter.h

diff --git a/include/llvm/CodeGen/JITCodeEmitter.h b/include/llvm/CodeGen/JITCodeEmitter.h
index 81a7c60bdb60b4d1c94d999418b7659d437afd74..5ce6e83e5695cf00cc1180367fc2481706b40701 100644 (file)
--- a/include/llvm/CodeGen/JITCodeEmitter.h
+++ b/include/llvm/CodeGen/JITCodeEmitter.h
@@ -19,7 +19,6 @@
 
 #include <string>
 #include "llvm/Support/DataTypes.h"
-#include "llvm/Support/Streams.h"
 #include "llvm/CodeGen/MachineCodeEmitter.h"
 
 using namespace std;
@@ -89,7 +88,7 @@ public:
   /// emitByte - This callback is invoked when a byte needs to be written to the
   /// output stream.
   ///
-  void emitByte(unsigned char B) {
+  void emitByte(uint8_t B) {
     if (CurBufferPtr != BufferEnd)
       *CurBufferPtr++ = B;
   }
@@ -97,12 +96,12 @@ public:
   /// emitWordLE - This callback is invoked when a 32-bit word needs to be
   /// written to the output stream in little-endian format.
   ///
-  void emitWordLE(unsigned W) {
+  void emitWordLE(uint32_t W) {
     if (4 <= BufferEnd-CurBufferPtr) {
-      *CurBufferPtr++ = (unsigned char)(W >>  0);
-      *CurBufferPtr++ = (unsigned char)(W >>  8);
-      *CurBufferPtr++ = (unsigned char)(W >> 16);
-      *CurBufferPtr++ = (unsigned char)(W >> 24);
+      *CurBufferPtr++ = (uint8_t)(W >>  0);
+      *CurBufferPtr++ = (uint8_t)(W >>  8);
+      *CurBufferPtr++ = (uint8_t)(W >> 16);
+      *CurBufferPtr++ = (uint8_t)(W >> 24);
     } else {
       CurBufferPtr = BufferEnd;
     }
@@ -111,12 +110,12 @@ public:
   /// emitWordBE - This callback is invoked when a 32-bit word needs to be
   /// written to the output stream in big-endian format.
   ///
-  void emitWordBE(unsigned W) {
+  void emitWordBE(uint32_t W) {
     if (4 <= BufferEnd-CurBufferPtr) {
-      *CurBufferPtr++ = (unsigned char)(W >> 24);
-      *CurBufferPtr++ = (unsigned char)(W >> 16);
-      *CurBufferPtr++ = (unsigned char)(W >>  8);
-      *CurBufferPtr++ = (unsigned char)(W >>  0);
+      *CurBufferPtr++ = (uint8_t)(W >> 24);
+      *CurBufferPtr++ = (uint8_t)(W >> 16);
+      *CurBufferPtr++ = (uint8_t)(W >>  8);
+      *CurBufferPtr++ = (uint8_t)(W >>  0);
     } else {
       CurBufferPtr = BufferEnd;
     }
@@ -127,14 +126,14 @@ public:
   ///
   void emitDWordLE(uint64_t W) {
     if (8 <= BufferEnd-CurBufferPtr) {
-      *CurBufferPtr++ = (unsigned char)(W >>  0);
-      *CurBufferPtr++ = (unsigned char)(W >>  8);
-      *CurBufferPtr++ = (unsigned char)(W >> 16);
-      *CurBufferPtr++ = (unsigned char)(W >> 24);
-      *CurBufferPtr++ = (unsigned char)(W >> 32);
-      *CurBufferPtr++ = (unsigned char)(W >> 40);
-      *CurBufferPtr++ = (unsigned char)(W >> 48);
-      *CurBufferPtr++ = (unsigned char)(W >> 56);
+      *CurBufferPtr++ = (uint8_t)(W >>  0);
+      *CurBufferPtr++ = (uint8_t)(W >>  8);
+      *CurBufferPtr++ = (uint8_t)(W >> 16);
+      *CurBufferPtr++ = (uint8_t)(W >> 24);
+      *CurBufferPtr++ = (uint8_t)(W >> 32);
+      *CurBufferPtr++ = (uint8_t)(W >> 40);
+      *CurBufferPtr++ = (uint8_t)(W >> 48);
+      *CurBufferPtr++ = (uint8_t)(W >> 56);
     } else {
       CurBufferPtr = BufferEnd;
     }
@@ -145,14 +144,14 @@ public:
   ///
   void emitDWordBE(uint64_t W) {
     if (8 <= BufferEnd-CurBufferPtr) {
-      *CurBufferPtr++ = (unsigned char)(W >> 56);
-      *CurBufferPtr++ = (unsigned char)(W >> 48);
-      *CurBufferPtr++ = (unsigned char)(W >> 40);
-      *CurBufferPtr++ = (unsigned char)(W >> 32);
-      *CurBufferPtr++ = (unsigned char)(W >> 24);
-      *CurBufferPtr++ = (unsigned char)(W >> 16);
-      *CurBufferPtr++ = (unsigned char)(W >>  8);
-      *CurBufferPtr++ = (unsigned char)(W >>  0);
+      *CurBufferPtr++ = (uint8_t)(W >> 56);
+      *CurBufferPtr++ = (uint8_t)(W >> 48);
+      *CurBufferPtr++ = (uint8_t)(W >> 40);
+      *CurBufferPtr++ = (uint8_t)(W >> 32);
+      *CurBufferPtr++ = (uint8_t)(W >> 24);
+      *CurBufferPtr++ = (uint8_t)(W >> 16);
+      *CurBufferPtr++ = (uint8_t)(W >>  8);
+      *CurBufferPtr++ = (uint8_t)(W >>  0);
     } else {
       CurBufferPtr = BufferEnd;
     }
@@ -166,8 +165,8 @@ public:
     if(Alignment <= (uintptr_t)(BufferEnd-CurBufferPtr)) {
       // Move the current buffer ptr up to the specified alignment.
       CurBufferPtr =
-        (unsigned char*)(((uintptr_t)CurBufferPtr+Alignment-1) &
-                         ~(uintptr_t)(Alignment-1));
+        (uint8_t*)(((uintptr_t)CurBufferPtr+Alignment-1) &
+                   ~(uintptr_t)(Alignment-1));
     } else {
       CurBufferPtr = BufferEnd;
     }
@@ -176,9 +175,9 @@ public:
 
   /// emitULEB128Bytes - This callback is invoked when a ULEB128 needs to be
   /// written to the output stream.
-  void emitULEB128Bytes(unsigned Value) {
+  void emitULEB128Bytes(uint64_t Value) {
     do {
-      unsigned char Byte = Value & 0x7f;
+      uint8_t Byte = Value & 0x7f;
       Value >>= 7;
       if (Value) Byte |= 0x80;
       emitByte(Byte);
@@ -187,12 +186,12 @@ public:
   
   /// emitSLEB128Bytes - This callback is invoked when a SLEB128 needs to be
   /// written to the output stream.
-  void emitSLEB128Bytes(int Value) {
-    int Sign = Value >> (8 * sizeof(Value) - 1);
+  void emitSLEB128Bytes(int64_t Value) {
+    int32_t Sign = Value >> (8 * sizeof(Value) - 1);
     bool IsMore;
   
     do {
-      unsigned char Byte = Value & 0x7f;
+      uint8_t Byte = Value & 0x7f;
       Value >>= 7;
       IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
       if (IsMore) Byte |= 0x80;
@@ -205,14 +204,14 @@ public:
   void emitString(const std::string &String) {
     for (unsigned i = 0, N = static_cast<unsigned>(String.size());
          i < N; ++i) {
-      unsigned char C = String[i];
+      uint8_t C = String[i];
       emitByte(C);
     }
     emitByte(0);
   }
   
   /// emitInt32 - Emit a int32 directive.
-  void emitInt32(int Value) {
+  void emitInt32(uint32_t Value) {
     if (4 <= BufferEnd-CurBufferPtr) {
       *((uint32_t*)CurBufferPtr) = Value;
       CurBufferPtr += 4;
@@ -267,6 +266,11 @@ public:
     return Result;
   }
 
+  /// allocateGlobal - Allocate memory for a global.  Unlike allocateSpace,
+  /// this method does not allocate memory in the current output buffer,
+  /// because a global may live longer than the current function.
+  virtual void *allocateGlobal(uintptr_t Size, unsigned Alignment) = 0;
+
   /// StartMachineBasicBlock - This should be called by the target when a new
   /// basic block is about to be emitted.  This way the MCE knows where the
   /// start of the block is, and can implement getMachineBasicBlockAddress.