The kernel masks the integer overflow exception with the
software invalid exception mask. Include IOV in the set
of exception bits masked by fpcr_exc_enable.
Fixes the new float_convs test.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <
20190921043256.4575-7-richard.henderson@linaro.org>
*/
uint32_t soft_fpcr = alpha_ieee_swcr_to_fpcr(env->swcr) >> 32;
fpcr |= soft_fpcr & (FPCR_STATUS_MASK | FPCR_DNZ);
+
+ /*
+ * The IOV exception is disabled by the kernel with SWCR_TRAP_ENABLE_INV,
+ * which got mapped by alpha_ieee_swcr_to_fpcr to FPCR_INVD.
+ * Add FPCR_IOV to fpcr_exc_enable so that it is handled identically.
+ */
+ t |= CONVERT_BIT(soft_fpcr, FPCR_INVD, FPCR_IOV);
#endif
t |= CONVERT_BIT(fpcr, FPCR_INED, FPCR_INE);