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Optimize Bt,Btr,Bts temporary replacements.

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This commit is contained in:
TomAwezome 2022-10-20 01:41:19 -04:00
parent a1a1b6cd1d
commit 88e7430bc3
1 changed files with 16 additions and 18 deletions
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34
src/Kernel/KernelB.HH
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@ -19,35 +19,33 @@ public _intern IC_BTC Bool Btc( U8 *bit_field, I64 bit); //Bit test and co
// caused strange crashes on a Ryzen with Gigabyte brand motherboard, all PCI devices AMD brand.
// Bit test compiler implementation needs to be researched to fix those bugs.)
Bool Bt(U8 *bit_field, I64 bit)
Bool Bt(U8 reg RBX *bit_field, I64 reg RCX bit)
{
U32 *chunk = bit_field;
chunk += (bit / 32);
U64 chunk_bit = 1 << (bit % 32);
return (*chunk & chunk_bit) >> (bit % 32);
bit_field += bit / 8;
U64 reg RDX bit_mod = (bit & 7);
return (*bit_field & (1 << bit_mod)) >> bit_mod;
}
Bool Btr(U8 *bit_field, I64 bit)
Bool Btr(U8 reg RDX *bit_field, I64 reg RBX bit)
{
U32 *chunk = bit_field;
chunk += (bit / 32);
U64 chunk_bit = 1 << (bit % 32);
Bool result = (*chunk & chunk_bit) >> (bit % 32);
U64 reg R9 chunk_mod = (bit & 31);
U64 chunk_bit = 1 << chunk_mod;
bit_field(U32 *) += bit / 32;
Bool reg R8 result = (*(bit_field(U32 *)) & chunk_bit) >> chunk_mod;
*chunk &= ~(chunk_bit);
*(bit_field(U32 *)) &= ~(chunk_bit);
return result;
}
Bool Bts(U8 *bit_field, I64 bit)
Bool Bts(U8 reg RDX *bit_field, I64 reg RBX bit)
{
U32 *chunk = bit_field;
chunk += (bit / 32);
U64 chunk_bit = 1 << (bit % 32);
Bool result = (*chunk & chunk_bit) >> (bit % 32);
U64 reg R9 chunk_mod = (bit & 31);
U64 chunk_bit = 1 << chunk_mod;
bit_field(U32 *) += bit / 32;
Bool reg R8 result = (*(bit_field(U32 *)) & chunk_bit) >> chunk_mod;
*chunk |= chunk_bit;
*(bit_field(U32 *)) |= chunk_bit;
return result;
}