Commit 80093070 authored by Richard Henderson's avatar Richard Henderson Committed by Alex Bennée
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target/alpha: Mask IOV exception with INV for user-only 



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: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Message-Id: <20190921043256.4575-7-richard.henderson@linaro.org>
parent a8938e5f

target/alpha/helper.c

+7 −0
Original line number Diff line number Diff line
@@ -58,6 +58,13 @@ void cpu_alpha_store_fpcr(CPUAlphaState *env, uint64_t val) 
     */

    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);