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hv: code clean up regarding to % and / operations

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- Clean up some code regarding to % and / operations since bit
  operations are faster.
        x % 64U ---> x & 0x3fU
        x % 32U ---> x & 0x1fU
        x % 16U ---> x & 0xfU
        x % 8U  ---> x & 0x7U
        x % 4U  ---> x & 0x3U
        x % 2U  ---> x & 0x1U

        x / 64U ---> x >> 6U
        x / 32U ---> x >> 5U
        x / 16U ---> x >> 4U
        x / 8U  ---> x >> 3U
        x / 4U  ---> x >> 2U
        x / 2U  ---> x >> 1U
- Minor changes regarding to coding styles

Tracked-On: #861
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Shiqing Gao
2018-08-21 13:36:45 +08:00
committed by lijinxia
parent 0c630d9003
commit 42aaf5d46f
10 changed files with 39 additions and 36 deletions
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4
hypervisor/lib/memory.c
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@@ -407,10 +407,10 @@ void *memcpy_s(void *d, size_t dmax, const void *s, size_t slen_arg)
asm volatile ("cld; rep; movsq"
: "=&c"(ecx), "=&D"(dest8), "=&S"(src8)
: "0" (slen / 8), "1" (dest8), "2" (src8)
: "0" (slen >> 3), "1" (dest8), "2" (src8)
: "memory");
slen = slen % 8U;
slen = slen & 0x7U;
}
/* tail bytes */