[src/trunk]: src/sys/arch/sparc64/sparc64 sun4v: sparc_interupt - ensure that...

[palle <palle%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/4806a74b0824
branches:  trunk
changeset: 806414:4806a74b0824
user:      palle <palle%NetBSD.org@localhost>
date:      Mon Feb 23 12:36:58 2015 +0000

description:
sun4v: sparc_interupt - ensure that the trap level and globals level are the same when the flushw instruction is issued - othwise warnings occur when using the sun4v Legion simulator.

diffstat:

 sys/arch/sparc64/sparc64/locore.s |  35 +++++++++++++++++++++++++++--------
 1 files changed, 27 insertions(+), 8 deletions(-)

diffs (63 lines):

diff -r beb5bfeb17c9 -r 4806a74b0824 sys/arch/sparc64/sparc64/locore.s
--- a/sys/arch/sparc64/sparc64/locore.s Mon Feb 23 11:40:57 2015 +0000
+++ b/sys/arch/sparc64/sparc64/locore.s Mon Feb 23 12:36:58 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: locore.s,v 1.377 2014/10/26 21:03:45 palle Exp $       */
+/*     $NetBSD: locore.s,v 1.378 2015/02/23 12:36:58 palle Exp $       */
 
 /*
  * Copyright (c) 2006-2010 Matthew R. Green
@@ -3678,12 +3678,6 @@
        bne,pt  %icc, 1f
         nop
        NORMAL_GLOBALS_SUN4V
-       ba      2f
-        nop
-1:             
-#endif
-       NORMAL_GLOBALS_SUN4U
-2:
        ! Save the normal globals
        stx     %g1, [%sp + CC64FSZ + STKB + TF_G + ( 1*8)]
        stx     %g2, [%sp + CC64FSZ + STKB + TF_G + ( 2*8)]
@@ -3692,7 +3686,7 @@
        stx     %g5, [%sp + CC64FSZ + STKB + TF_G + ( 5*8)]
        stx     %g6, [%sp + CC64FSZ + STKB + TF_G + ( 6*8)]
        stx     %g7, [%sp + CC64FSZ + STKB + TF_G + ( 7*8)]
-
+       ALTERNATE_GLOBALS_SUN4V
        /*
         * In the EMBEDANY memory model %g4 points to the start of the
         * data segment.  In our case we need to clear it before calling
@@ -3701,6 +3695,31 @@
        clr     %g4
 
        flushw                  ! Do not remove this insn -- causes interrupt loss
+       NORMAL_GLOBALS_SUN4V
+       ba      2f
+        nop
+1:             
+#endif
+       NORMAL_GLOBALS_SUN4U
+       ! Save the normal globals
+       stx     %g1, [%sp + CC64FSZ + STKB + TF_G + ( 1*8)]
+       stx     %g2, [%sp + CC64FSZ + STKB + TF_G + ( 2*8)]
+       stx     %g3, [%sp + CC64FSZ + STKB + TF_G + ( 3*8)]
+       stx     %g4, [%sp + CC64FSZ + STKB + TF_G + ( 4*8)]
+       stx     %g5, [%sp + CC64FSZ + STKB + TF_G + ( 5*8)]
+       stx     %g6, [%sp + CC64FSZ + STKB + TF_G + ( 6*8)]
+       stx     %g7, [%sp + CC64FSZ + STKB + TF_G + ( 7*8)]
+       ALTERNATE_GLOBALS_SUN4U
+       /*
+        * In the EMBEDANY memory model %g4 points to the start of the
+        * data segment.  In our case we need to clear it before calling
+        * any C-code.
+        */
+       clr     %g4
+
+       flushw                  ! Do not remove this insn -- causes interrupt loss
+       NORMAL_GLOBALS_SUN4U
+2:
        rd      %y, %l6
        INCR64(CPUINFO_VA+CI_NINTR)     ! cnt.v_ints++ (clobbers %o0,%o1)
        rdpr    %tt, %l5                ! Find out our current IPL