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target-alpha: Set EXC_M_SWC for exceptions from /S insns

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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>
This commit is contained in:
Richard Henderson 2014-06-30 09:53:46 -07:00
parent 471d493047
commit f6b6b7b8a7
1 changed files with 3 additions and 5 deletions
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8
target-alpha/fpu_helper.c
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@ -55,10 +55,8 @@ static uint32_t soft_to_fpcr_exc(CPUAlphaState *env)
}
static void fp_exc_raise1(CPUAlphaState *env, uintptr_t retaddr,
uint32_t exc, uint32_t regno)
uint32_t exc, uint32_t regno, uint32_t hw_exc)
{
uint32_t hw_exc = 0;
hw_exc |= CONVERT_BIT(exc, FPCR_INV, EXC_M_INV);
hw_exc |= CONVERT_BIT(exc, FPCR_DZE, EXC_M_DZE);
hw_exc |= CONVERT_BIT(exc, FPCR_OVF, EXC_M_FOV);
@ -79,7 +77,7 @@ void helper_fp_exc_raise(CPUAlphaState *env, uint32_t ignore, uint32_t regno)
env->fpcr |= exc;
exc &= ~ignore;
if (exc) {
fp_exc_raise1(env, GETPC(), exc, regno);
fp_exc_raise1(env, GETPC(), exc, regno, 0);
}
}
}
@ -93,7 +91,7 @@ void helper_fp_exc_raise_s(CPUAlphaState *env, uint32_t ignore, uint32_t regno)
exc &= ~ignore;
if (exc) {
exc &= env->fpcr_exc_enable;
fp_exc_raise1(env, GETPC(), exc, regno);
fp_exc_raise1(env, GETPC(), exc, regno, EXC_M_SWC);
}
}
}