[llvm-commits] CVS: llvm/include/llvm/CodeGen/MachineCodeEmitter.h

[Chris Lattner]

Changes in directory llvm/include/llvm/CodeGen:

MachineCodeEmitter.h updated: 1.33 -> 1.34
---
Log message:

Fix a purely hypothetical problem (for now): emitWord emits in the host
byte format.  This doesn't work when using the code emitter in a cross target
environment.  Since the code emitter is only really used by the JIT, this
isn't a current problem, but if we ever start emitting .o files, it would be.


---
Diffs of the changes:  (+21 -6)

 MachineCodeEmitter.h |   27 +++++++++++++++++++++------
 1 files changed, 21 insertions(+), 6 deletions(-)


Index: llvm/include/llvm/CodeGen/MachineCodeEmitter.h
diff -u llvm/include/llvm/CodeGen/MachineCodeEmitter.h:1.33 llvm/include/llvm/CodeGen/MachineCodeEmitter.h:1.34
--- llvm/include/llvm/CodeGen/MachineCodeEmitter.h:1.33	Tue May  2 13:27:26 2006
+++ llvm/include/llvm/CodeGen/MachineCodeEmitter.h	Tue May  2 14:14:47 2006
@@ -112,14 +112,29 @@
       *CurBufferPtr++ = B;
   }
 
-  /// emitWord - This callback is invoked when a word needs to be written to the
-  /// output stream.
+  /// emitWordLE - This callback is invoked when a 32-bit word needs to be
+  /// written to the output stream in little-endian format.
   ///
-  void emitWord(unsigned W) {
-    // FIXME: handle endian mismatches for .o file emission.
+  void emitWordLE(unsigned W) {
     if (CurBufferPtr+4 <= BufferEnd) {
-      *(unsigned*)CurBufferPtr = W;
-      CurBufferPtr += 4;
+      *CurBufferPtr++ = (unsigned char)(W >>  0);
+      *CurBufferPtr++ = (unsigned char)(W >>  8);
+      *CurBufferPtr++ = (unsigned char)(W >> 16);
+      *CurBufferPtr++ = (unsigned char)(W >> 24);
+    } else {
+      CurBufferPtr = BufferEnd;
+    }
+  }
+  
+  /// 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) {
+    if (CurBufferPtr+4 <= BufferEnd) {
+      *CurBufferPtr++ = (unsigned char)(W >> 24);
+      *CurBufferPtr++ = (unsigned char)(W >> 16);
+      *CurBufferPtr++ = (unsigned char)(W >>  8);
+      *CurBufferPtr++ = (unsigned char)(W >>  0);
     } else {
       CurBufferPtr = BufferEnd;
     }