fix fesetenv(FE_DFL_ENV) on mips

mips fesetenv did not handle FE_DFL_ENV, now fcsr is cleared in that
case.

(cherry picked from commit 5fc1487832e16aa2119e735a388d5f36c8c139e2)

diff --git a/src/fenv/mips/fenv.s b/src/fenv/mips/fenv.s
index 095cb6068f9e2f1fd2f694dc4f7747f04c66b934..a3233c1e538e90417047c64b246842a67059e732 100644 (file)
--- a/src/fenv/mips/fenv.s
+++ b/src/fenv/mips/fenv.s
@@ -57,7 +57,9 @@ fegetenv:
 .global fesetenv
 .type  fesetenv,@function
 fesetenv:
+       addiu   $5, $4, 1
+       beq     $5, $0, 1f
        lw      $5, 0($4)
-       ctc1    $5, $31
+1:     ctc1    $5, $31
        jr      $ra
        li      $2, 0