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For consistency, move muls64 / mulu64 prototypes to host-utils.h

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Make x86_64 optimized versions inline.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3523 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-11-04 02:24:58 +00:00
parent 077fc2061e
commit 7a51ad822f
5 changed files with 31 additions and 42 deletions
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15
host-utils.c
View file

@ -28,6 +28,7 @@
//#define DEBUG_MULDIV
/* Long integer helpers */
#if !defined(__x86_64__)
static void add128 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
{
*plow += a;
@ -69,17 +70,10 @@ static void mul64 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
*phigh += v;
}
/* Unsigned 64x64 -> 128 multiplication */
void mulu64 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
{
#if defined(__x86_64__)
__asm__ ("mul %0\n\t"
: "=d" (*phigh), "=a" (*plow)
: "a" (a), "0" (b));
#else
mul64(plow, phigh, a, b);
#endif
#if defined(DEBUG_MULDIV)
printf("mulu64: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n",
a, b, *phigh, *plow);
@ -89,11 +83,6 @@ void mulu64 (uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
/* Signed 64x64 -> 128 multiplication */
void muls64 (uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b)
{
#if defined(__x86_64__)
__asm__ ("imul %0\n\t"
: "=d" (*phigh), "=a" (*plow)
: "a" (a), "0" (b));
#else
int sa, sb;
sa = (a < 0);
@ -106,9 +95,9 @@ void muls64 (uint64_t *plow, uint64_t *phigh, int64_t a, int64_t b)
if (sa ^ sb) {
neg128(plow, phigh);
}
#endif
#if defined(DEBUG_MULDIV)
printf("muls64: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n",
a, b, *phigh, *plow);
#endif
}
#endif /* !defined(__x86_64__) */