Revision 1ac5889f target-s390x/int_helper.c

b/target-s390x/int_helper.c
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#endif
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/* 64/64 -> 128 unsigned multiplication */


  		





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void HELPER(mlg)(CPUS390XState *env, uint32_t r1, uint64_t v2)


  		





  
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uint64_t HELPER(mul128)(CPUS390XState *env, uint64_t v1, uint64_t v2)


  		





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{


  		





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#if HOST_LONG_BITS == 64 && defined(__GNUC__)


  		





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    /* assuming 64-bit hosts have __uint128_t */


  		





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    __uint128_t res = (__uint128_t)env->regs[r1 + 1];


  		





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    res *= (__uint128_t)v2;


  		





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    env->regs[r1] = (uint64_t)(res >> 64);


  		





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    env->regs[r1 + 1] = (uint64_t)res;


  		





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#else


  		





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    mulu64(&env->regs[r1 + 1], &env->regs[r1], env->regs[r1 + 1], v2);


  		





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#endif


  		





  
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    uint64_t reth;


  		





  
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    mulu64(&env->retxl, &reth, v1, v2);


  		





  
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    return reth;


  		





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}


  		





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/* 128 -> 64/64 unsigned division */


  		












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