Changeset 99de22b in mainline for uspace/lib/libc/arch/sparc64/src/fibril.S

Timestamp:

2010-01-15T18:30:25Z (14 years ago)

Author:

Pavel Rimsky <pavel@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

eeb643d

Parents:

387416b (diff), 563d6077 (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merged latest trunk changes.

File:

• uspace/lib/libc/arch/sparc64/src/fibril.S (modified) (2 diffs)

uspace/lib/libc/arch/sparc64/src/fibril.S

@@ -35 +35 @@
 
 context_save:
+        #
+        # We rely on the kernel to flush our active register windows to memory
+        # should a thread switch occur.
+        #
         CONTEXT_SAVE_ARCH_CORE %o0
         retl
@@ -42 +46 @@
         #
         # Flush all active windows.
-        # This is essential, because CONTEXT_LOAD overwrites
-        # %sp of CWP - 1 with the value written to %fp of CWP.
-        # Flushing all active windows mitigates this problem
-        # as CWP - 1 becomes the overlap window.
-        #               
+        # This is essential, because CONTEXT_RESTORE_ARCH_CORE overwrites %sp of
+        # CWP - 1 with the value written to %fp of CWP.  Flushing all active
+        # windows mitigates this problem as CWP - 1 becomes the overlap window.
+        #
         flushw