[pypy-commit] pypy ppc-jit-backend: (bivab, hager): do stack pointer alignment

[hager]

Author: hager <sven.hager at uni-duesseldorf.de>
Branch: ppc-jit-backend
Changeset: r50432:55b2c881ec01
Date: 2011-12-12 17:11 +0100
http://bitbucket.org/pypy/pypy/changeset/55b2c881ec01/

Log:	(bivab, hager): do stack pointer alignment

diff --git a/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py b/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py
--- a/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py
+++ b/pypy/jit/backend/ppc/ppcgen/ppc_assembler.py
@@ -729,6 +729,10 @@
                        + PARAMETER_AREA
                        + BACKCHAIN_SIZE * WORD)
 
+        # align stack pointer
+        while frame_depth % (4 * WORD) != 0:
+            frame_depth += WORD
+
         return frame_depth
     
     def materialize_loop(self, looptoken, show):