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target-alpha: Set EXC_M_SWC for exceptions from /S insns
Previously forgotten, the kernel needs the software completion bit to know that it needs to emulate software completion qualified insns. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Richard Henderson <rth@twiddle.net>
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@ -55,10 +55,8 @@ static uint32_t soft_to_fpcr_exc(CPUAlphaState *env)
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}
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static void fp_exc_raise1(CPUAlphaState *env, uintptr_t retaddr,
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uint32_t exc, uint32_t regno)
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uint32_t exc, uint32_t regno, uint32_t hw_exc)
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{
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uint32_t hw_exc = 0;
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hw_exc |= CONVERT_BIT(exc, FPCR_INV, EXC_M_INV);
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hw_exc |= CONVERT_BIT(exc, FPCR_DZE, EXC_M_DZE);
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hw_exc |= CONVERT_BIT(exc, FPCR_OVF, EXC_M_FOV);
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@ -79,7 +77,7 @@ void helper_fp_exc_raise(CPUAlphaState *env, uint32_t ignore, uint32_t regno)
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env->fpcr |= exc;
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exc &= ~ignore;
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if (exc) {
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fp_exc_raise1(env, GETPC(), exc, regno);
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fp_exc_raise1(env, GETPC(), exc, regno, 0);
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}
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}
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}
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@ -93,7 +91,7 @@ void helper_fp_exc_raise_s(CPUAlphaState *env, uint32_t ignore, uint32_t regno)
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exc &= ~ignore;
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if (exc) {
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exc &= env->fpcr_exc_enable;
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fp_exc_raise1(env, GETPC(), exc, regno);
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fp_exc_raise1(env, GETPC(), exc, regno, EXC_M_SWC);
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}
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}
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}
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