Revision e14fe0a9 target-alpha/op_helper.c
| b/target-alpha/op_helper.c | ||
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void helper_mulqv () |
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{
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uint64_t res, tmp0, tmp1; |
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res = (T0 >> 32) * (T1 >> 32); |
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tmp0 = ((T0 & 0xFFFFFFFF) * (T1 >> 32)) + |
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((T0 >> 32) * (T1 & 0xFFFFFFFF)); |
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tmp1 = (T0 & 0xFFFFFFFF) * (T1 & 0xFFFFFFFF); |
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tmp0 += tmp1 >> 32; |
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res += tmp0 >> 32; |
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T0 *= T1; |
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if (unlikely(res != 0)) {
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uint64_t tl, th; |
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muls64(&tl, &th, T0, T1); |
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/* If th != 0 && th != -1, then we had an overflow */ |
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if (unlikely((th + 1) > 1)) {
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helper_excp(EXCP_ARITH, EXCP_ARITH_OVERFLOW); |
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} |
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} |
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void helper_umulh (void) |
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{
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uint64_t tmp0, tmp1; |
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tmp0 = ((T0 & 0xFFFFFFFF) * (T1 >> 32)) + |
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((T0 >> 32) * (T1 & 0xFFFFFFFF)); |
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tmp1 = (T0 & 0xFFFFFFFF) * (T1 & 0xFFFFFFFF); |
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tmp0 += tmp1 >> 32; |
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T0 = (T0 >> 32) * (T0 >> 32); |
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T0 += tmp0 >> 32; |
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T0 = tl; |
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} |
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void helper_ctpop (void) |
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