added 3 nops following write to wim since a restore following it is

subject to causing unpredictable window underflow/overflows.
1996-08-01 15:06:00 +00:00
parent c65a0cee2f
commit 16bae520ac
1 changed files with 3 additions and 0 deletions
--- a/c/src/exec/score/cpu/sparc/cpu_asm.s
+++ b/c/src/exec/score/cpu/sparc/cpu_asm.s
@@ -683,6 +683,9 @@ simple_return:
         */

        wr      %l4, 0, %wim               ! WIM = new WIM
+        nop                                ! must delay after writing WIM
+        nop
+        nop
        restore                            ! now into the tasks window

        ldd     [%g1 + CPU_STACK_FRAME_L0_OFFSET], %l0