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A64: Implement CRC32

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Lioncash 2018-01-28 01:41:58 -05:00 committed by MerryMage
parent 01b4395bf8
commit af1384d700
6 changed files with 161 additions and 7 deletions
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109
src/backend_x64/emit_x64_crc32.cpp
View file

@ -17,8 +17,10 @@ namespace Dynarmic::BackendX64 {
using namespace Xbyak::util;
using CRC32Table = std::array<u32, 256>;
// CRC32 algorithm that uses polynomial 0x1EDC6F41
constexpr std::array<u32, 256> castagnoli_table{{
constexpr CRC32Table castagnoli_table{{
0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4,
0xC79A971F, 0x35F1141C, 0x26A1E7E8, 0xD4CA64EB,
0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B,
@ -85,7 +87,75 @@ constexpr std::array<u32, 256> castagnoli_table{{
0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351
}};
static u32 ComputeCRC32(const std::array<u32, 256>& table, u32 crc, const u64 value, int length) {
// CRC32 algorithm that uses polynomial 0x04C11DB7
constexpr CRC32Table iso_table{{
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
}};
static u32 ComputeCRC32(const CRC32Table& table, u32 crc, const u64 value, int length) {
const auto* data = reinterpret_cast<const unsigned char*>(&value);
while (length-- != 0) {
@ -95,6 +165,14 @@ static u32 ComputeCRC32(const std::array<u32, 256>& table, u32 crc, const u64 va
return crc;
}
static void CRC32Fallback(std::array<Argument, 3> args, BlockOfCode& code, EmitContext& ctx,
IR::Inst* inst, const CRC32Table& table, const int data_size) {
ctx.reg_alloc.HostCall(inst, {}, args[0], args[1], {});
code.mov(code.ABI_PARAM1, reinterpret_cast<u64>(&table));
code.mov(code.ABI_PARAM4, data_size / CHAR_BIT);
code.CallFunction(&ComputeCRC32);
}
static void EmitCRC32Castagnoli(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, const int data_size) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
@ -104,13 +182,16 @@ static void EmitCRC32Castagnoli(BlockOfCode& code, EmitContext& ctx, IR::Inst* i
code.crc32(crc, value);
ctx.reg_alloc.DefineValue(inst, crc);
} else {
ctx.reg_alloc.HostCall(inst, {}, args[0], args[1], {});
code.mov(code.ABI_PARAM1, reinterpret_cast<u64>(&castagnoli_table));
code.mov(code.ABI_PARAM4, data_size / CHAR_BIT);
code.CallFunction(&ComputeCRC32);
CRC32Fallback(args, code, ctx, inst, castagnoli_table, data_size);
}
}
static void EmitCRC32ISO(BlockOfCode& code, EmitContext& ctx, IR::Inst* inst, const int data_size) {
auto args = ctx.reg_alloc.GetArgumentInfo(inst);
CRC32Fallback(args, code, ctx, inst, iso_table, data_size);
}
void EmitX64::EmitCRC32Castagnoli8(EmitContext& ctx, IR::Inst* inst) {
EmitCRC32Castagnoli(*code, ctx, inst, 8);
}
@ -127,4 +208,20 @@ void EmitX64::EmitCRC32Castagnoli64(EmitContext& ctx, IR::Inst* inst) {
EmitCRC32Castagnoli(*code, ctx, inst, 64);
}
void EmitX64::EmitCRC32ISO8(EmitContext& ctx, IR::Inst* inst) {
EmitCRC32ISO(*code, ctx, inst, 8);
}
void EmitX64::EmitCRC32ISO16(EmitContext& ctx, IR::Inst* inst) {
EmitCRC32ISO(*code, ctx, inst, 16);
}
void EmitX64::EmitCRC32ISO32(EmitContext& ctx, IR::Inst* inst) {
EmitCRC32ISO(*code, ctx, inst, 32);
}
void EmitX64::EmitCRC32ISO64(EmitContext& ctx, IR::Inst* inst) {
EmitCRC32ISO(*code, ctx, inst, 64);
}
} // namespace Dynarmic::BackendX64

2
src/frontend/A64/decoder/a64.inc
View file

@ -274,7 +274,7 @@ INST(LSLV, "LSLV", "z0011
INST(LSRV, "LSRV", "z0011010110mmmmm001001nnnnnddddd")
INST(ASRV, "ASRV", "z0011010110mmmmm001010nnnnnddddd")
INST(RORV, "RORV", "z0011010110mmmmm001011nnnnnddddd")
//INST(CRC32, "CRC32B, CRC32H, CRC32W, CRC32X", "z0011010110mmmmm0100zznnnnnddddd")
INST(CRC32, "CRC32B, CRC32H, CRC32W, CRC32X", "z0011010110mmmmm0100zznnnnnddddd")
INST(CRC32C, "CRC32CB, CRC32CH, CRC32CW, CRC32CX", "z0011010110mmmmm0101zznnnnnddddd")
//INST(PACGA, "PACGA", "10011010110mmmmm001100nnnnnddddd")

33
src/frontend/A64/translate/impl/data_processing_crc32.cpp
View file

@ -8,6 +8,39 @@
namespace Dynarmic::A64 {
bool TranslatorVisitor::CRC32(bool sf, Reg Rm, Imm<2> sz, Reg Rn, Reg Rd) {
const u32 integral_size = sz.ZeroExtend();
if (sf && integral_size != 0b11) {
return UnallocatedEncoding();
}
if (!sf && integral_size == 0b11) {
return UnallocatedEncoding();
}
const IR::U32 result = [&] {
const size_t datasize = sf ? 64 : 32;
const IR::U32 accumulator = ir.GetW(Rn);
const IR::U32U64 data = X(datasize, Rm);
switch (integral_size) {
case 0b00:
return ir.CRC32ISO8(accumulator, data);
case 0b01:
return ir.CRC32ISO16(accumulator, data);
case 0b10:
return ir.CRC32ISO32(accumulator, data);
case 0b11:
default:
return ir.CRC32ISO64(accumulator, data);
}
}();
X(32, Rd, result);
return true;
}
bool TranslatorVisitor::CRC32C(bool sf, Reg Rm, Imm<2> sz, Reg Rn, Reg Rd) {
const u32 integral_size = sz.ZeroExtend();

16
src/frontend/ir/ir_emitter.cpp
View file

@ -699,6 +699,22 @@ U32 IREmitter::CRC32Castagnoli64(const U32& a, const U64& b) {
return Inst<U32>(Opcode::CRC32Castagnoli64, a, b);
}
U32 IREmitter::CRC32ISO8(const U32& a, const U32& b) {
return Inst<U32>(Opcode::CRC32ISO8, a, b);
}
U32 IREmitter::CRC32ISO16(const U32& a, const U32& b) {
return Inst<U32>(Opcode::CRC32ISO16, a, b);
}
U32 IREmitter::CRC32ISO32(const U32& a, const U32& b) {
return Inst<U32>(Opcode::CRC32ISO32, a, b);
}
U32 IREmitter::CRC32ISO64(const U32& a, const U64& b) {
return Inst<U32>(Opcode::CRC32ISO64, a, b);
}
UAny IREmitter::VectorGetElement(size_t esize, const U128& a, size_t index) {
ASSERT_MSG(esize * index < 128, "Invalid index");
switch (esize) {

4
src/frontend/ir/ir_emitter.h
View file

@ -190,6 +190,10 @@ public:
U32 CRC32Castagnoli16(const U32& a, const U32& b);
U32 CRC32Castagnoli32(const U32& a, const U32& b);
U32 CRC32Castagnoli64(const U32& a, const U64& b);
U32 CRC32ISO8(const U32& a, const U32& b);
U32 CRC32ISO16(const U32& a, const U32& b);
U32 CRC32ISO32(const U32& a, const U32& b);
U32 CRC32ISO64(const U32& a, const U64& b);
UAny VectorGetElement(size_t esize, const U128& a, size_t index);
U128 VectorAdd8(const U128& a, const U128& b);

4
src/frontend/ir/opcodes.inc
View file

@ -173,6 +173,10 @@ OPCODE(CRC32Castagnoli8, T::U32, T::U32, T::U32
OPCODE(CRC32Castagnoli16, T::U32, T::U32, T::U32 )
OPCODE(CRC32Castagnoli32, T::U32, T::U32, T::U32 )
OPCODE(CRC32Castagnoli64, T::U32, T::U32, T::U64 )
OPCODE(CRC32ISO8, T::U32, T::U32, T::U32 )
OPCODE(CRC32ISO16, T::U32, T::U32, T::U32 )
OPCODE(CRC32ISO32, T::U32, T::U32, T::U32 )
OPCODE(CRC32ISO64, T::U32, T::U32, T::U64 )
// Vector instructions
OPCODE(VectorGetElement8, T::U8, T::U128, T::U8 )