fix sh fesetround failure to clear old mode

the sh version of fesetround or'd the new rounding mode onto the
control register without clearing the old rounding mode bits, making
changes sticky. this was the root cause of multiple test failures.

diff --git a/src/fenv/sh/fenv.S b/src/fenv/sh/fenv.S
index 907aefc0d9d0caeb37dd6214df3db884c9446cae..b3b7d66adacdf6897ebc8ad97e6d03655d0e0d24 100644 (file)
--- a/src/fenv/sh/fenv.S
+++ b/src/fenv/sh/fenv.S
@@ -12,6 +12,8 @@ fegetround:
 .type   __fesetround, @function
 __fesetround:
        sts fpscr, r0
+       mov #-4, r1
+       and r1, r0
        or  r4, r0
        lds r0, fpscr
        rts