Changeset 149d297 for src/libcfa/concurrency/CtxSwitch-x86_64.S

Timestamp:

Mar 9, 2017, 10:47:08 PM (7 years ago)

Author:

Peter A. Buhr <pabuhr@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, with_gc

Children:

68ac32e, a9b657a

Parents:

6152c81 (diff), 7b2c2c5f (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:

merge

File:

• src/libcfa/concurrency/CtxSwitch-x86_64.S (modified) (2 diffs)

src/libcfa/concurrency/CtxSwitch-x86_64.S

@@ -47 +47 @@
 CtxSwitch:
 
-        // Save volatile registers on the stack.
+        // Save floating & SSE control words on the stack.
 
         subq   $8,%rsp
         stmxcsr 0(%rsp)         // 4 bytes
         fnstcw  4(%rsp)         // 2 bytes
+
+        // Save volatile registers on the stack.
+
         pushq %r15
         pushq %r14
@@ -75 +78 @@
         popq %r14
         popq %r15
+
+        // Load floating & SSE control words from the stack.
+
         fldcw   4(%rsp)
         ldmxcsr 0(%rsp)
-        addq $8,%rsp
+        addq   $8,%rsp
 
         // Return to thread.