arch-arm: Mask out unsupported trapped exception handling bits

Floating-point trapped exception handlings are not currently
supported in gem5, therefore the corresponding bits are RAZ/WI in
FCPR.

Change-Id: Ica43af62d5f3bbc095e8dd872f0bd365231a5b5f
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/10045
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

diff --git a/src/arch/arm/isa.cc b/src/arch/arm/isa.cc
index 347e644d1e2b7fc28f028bc62fae86586916a093..95437537496843a783121876aabb5df47633c2d2 100644 (file)
--- a/src/arch/arm/isa.cc
+++ b/src/arch/arm/isa.cc
@@ -521,12 +521,6 @@ ISA::readMiscReg(int misc_reg, ThreadContext *tc)
         {
             const uint32_t ones = (uint32_t)(-1);
             FPSCR fpscrMask  = 0;
-            fpscrMask.ioe = ones;
-            fpscrMask.dze = ones;
-            fpscrMask.ofe = ones;
-            fpscrMask.ufe = ones;
-            fpscrMask.ixe = ones;
-            fpscrMask.ide = ones;
             fpscrMask.len    = ones;
             fpscrMask.stride = ones;
             fpscrMask.rMode  = ones;
@@ -865,12 +859,6 @@ ISA::setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc)
             {
                 const uint32_t ones = (uint32_t)(-1);
                 FPSCR fpscrMask  = 0;
-                fpscrMask.ioe = ones;
-                fpscrMask.dze = ones;
-                fpscrMask.ofe = ones;
-                fpscrMask.ufe = ones;
-                fpscrMask.ixe = ones;
-                fpscrMask.ide = ones;
                 fpscrMask.len    = ones;
                 fpscrMask.stride = ones;
                 fpscrMask.rMode  = ones;