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SPU2-X: Convert inline assembly to intrinsics (#1464)

This commit is contained in:
Akash 2016-07-20 03:41:12 +05:30 committed by Jonathan Li
parent ddc68626d8
commit 1e92c24847
1 changed files with 8 additions and 51 deletions
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59
plugins/spu2-x/src/Mixer.cpp
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@ -269,21 +269,6 @@ static __forceinline void GetNextDataDummy(V_Core& thiscore, uint voiceidx)
/////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////////
// //
#if defined(__clang__)
#include <limits.h>
static s32 rotr(u32 x, u32 s)
{
//return (x >> s) | (x << (32 - s));
return (x >> s) | (x << (sizeof(x) * CHAR_BIT - s));
}
static s32 rotl(u32 x, u32 s)
{
//return (x << s) | (x >> (32 - s));
return (x << s) | (x >> (sizeof(x) * CHAR_BIT - s));
}
#endif
static s32 __forceinline GetNoiseValues()
{
@ -294,42 +279,14 @@ static s32 __forceinline GetNoiseValues()
retval = (Seed&0xff) << 8;
else if( Seed&0xffff )
retval = 0x7fff;
#ifdef _WIN32
__asm {
MOV eax,Seed
ROR eax,5
XOR eax,0x9a
MOV ebx,eax
ROL eax,2
ADD eax,ebx
XOR eax,ebx
ROR eax,3
MOV Seed,eax
}
#elif !defined(__clang__) // Linux with GCC
__asm__ (
".intel_syntax\n"
"MOV %%eax,%1\n"
"ROR %%eax,5\n"
"XOR %%eax,0x9a\n"
"MOV %%esi,%%eax\n"
"ROL %%eax,2\n"
"ADD %%eax,%%esi\n"
"XOR %%eax,%%esi\n"
"ROR %%eax,3\n"
"MOV %0,%%eax\n"
".att_syntax\n" : "=r"(Seed) :"r"(Seed)
: "%eax", "%esi"
);
#else // Clang and others
s32 s = rotr(Seed,5);
s ^= 0x9a;
s32 k = rotl(s,2);
k+=s;
k^=s;
k = rotr(k,3);
Seed=k;
#endif
s32 x = _rotr(Seed, 0x5);
x ^= 0x9a;
s32 y = _rotl(x, 0x2);
y += x;
y ^= x;
Seed = _rotr(y, 0x3);
return retval;
}
/////////////////////////////////////////////////////////////////////////////////////////