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Merge pull request #9402 from lioncash/emitter 

Arm64Emitter: Interface cleanup
This commit is contained in:
Léo Lam 2021-01-01 00:52:40 +01:00 committed by GitHub
parent 871d1d5953 cca0dffebd
commit f59ee87031
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 200 additions and 195 deletions
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290
Source/Core/Common/Arm64Emitter.cpp
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@ -6,6 +6,8 @@
#include <array> #include <array>
#include <cinttypes> #include <cinttypes>
#include <cstring> #include <cstring>
#include <optional>
#include <tuple>
#include <vector> #include <vector>
#include "Common/Align.h" #include "Common/Align.h"
@ -32,30 +34,20 @@ uint64_t LargestPowerOf2Divisor(uint64_t value)
} }
// For ADD/SUB // For ADD/SUB
bool IsImmArithmetic(uint64_t input, u32* val, bool* shift) std::optional<std::pair<u32, bool>> IsImmArithmetic(uint64_t input)
{ {
if (input < 4096) if (input < 4096)
{ return std::pair{static_cast<u32>(input), false};
*val = input;
*shift = false; if ((input & 0xFFF000) == input)
return true; return std::pair{static_cast<u32>(input >> 12), true};
}
else if ((input & 0xFFF000) == input) return std::nullopt;
{
*val = input >> 12;
*shift = true;
return true;
}
return false;
} }
// For AND/TST/ORR/EOR etc // For AND/TST/ORR/EOR etc
bool IsImmLogical(uint64_t value, unsigned int width, unsigned int* n, unsigned int* imm_s, std::optional<std::tuple<u32, u32, u32>> IsImmLogical(u64 value, u32 width)
unsigned int* imm_r)
{ {
// DCHECK((n != NULL) && (imm_s != NULL) && (imm_r != NULL));
// DCHECK((width == kWRegSizeInBits) || (width == kXRegSizeInBits));
bool negate = false; bool negate = false;
// Logical immediates are encoded using parameters n, imm_s and imm_r using // Logical immediates are encoded using parameters n, imm_s and imm_r using
@ -160,7 +152,7 @@ bool IsImmLogical(uint64_t value, unsigned int width, unsigned int* n, unsigned
// The input was zero (or all 1 bits, which will come to here too after we // The input was zero (or all 1 bits, which will come to here too after we
// inverted it at the start of the function), for which we just return // inverted it at the start of the function), for which we just return
// false. // false.
return false; return std::nullopt;
} }
else else
{ {
@ -177,12 +169,12 @@ bool IsImmLogical(uint64_t value, unsigned int width, unsigned int* n, unsigned
// If the repeat period d is not a power of two, it can't be encoded. // If the repeat period d is not a power of two, it can't be encoded.
if (!MathUtil::IsPow2<u64>(d)) if (!MathUtil::IsPow2<u64>(d))
return false; return std::nullopt;
// If the bit stretch (b - a) does not fit within the mask derived from the // If the bit stretch (b - a) does not fit within the mask derived from the
// repeat period, then fail. // repeat period, then fail.
if (((b - a) & ~mask) != 0) if (((b - a) & ~mask) != 0)
return false; return std::nullopt;
// The only possible option is b - a repeated every d bits. Now we're going to // The only possible option is b - a repeated every d bits. Now we're going to
// actually construct the valid logical immediate derived from that // actually construct the valid logical immediate derived from that
@ -200,17 +192,17 @@ bool IsImmLogical(uint64_t value, unsigned int width, unsigned int* n, unsigned
0x5555555555555555UL, 0x5555555555555555UL,
}}; }};
int multiplier_idx = Common::CountLeadingZeros((u64)d) - 57; const int multiplier_idx = Common::CountLeadingZeros((u64)d) - 57;
// Ensure that the index to the multipliers array is within bounds. // Ensure that the index to the multipliers array is within bounds.
DEBUG_ASSERT((multiplier_idx >= 0) && (static_cast<size_t>(multiplier_idx) < multipliers.size())); DEBUG_ASSERT((multiplier_idx >= 0) && (static_cast<size_t>(multiplier_idx) < multipliers.size()));
uint64_t multiplier = multipliers[multiplier_idx]; const u64 multiplier = multipliers[multiplier_idx];
uint64_t candidate = (b - a) * multiplier; const u64 candidate = (b - a) * multiplier;
// The candidate pattern doesn't match our input value, so fail. // The candidate pattern doesn't match our input value, so fail.
if (value != candidate) if (value != candidate)
return false; return std::nullopt;
// We have a match! This is a valid logical immediate, so now we have to // We have a match! This is a valid logical immediate, so now we have to
// construct the bits and pieces of the instruction encoding that generates // construct the bits and pieces of the instruction encoding that generates
@ -219,7 +211,7 @@ bool IsImmLogical(uint64_t value, unsigned int width, unsigned int* n, unsigned
// Count the set bits in our basic stretch. The special case of clz(0) == -1 // Count the set bits in our basic stretch. The special case of clz(0) == -1
// makes the answer come out right for stretches that reach the very top of // makes the answer come out right for stretches that reach the very top of
// the word (e.g. numbers like 0xffffc00000000000). // the word (e.g. numbers like 0xffffc00000000000).
int clz_b = (b == 0) ? -1 : Common::CountLeadingZeros(b); const int clz_b = (b == 0) ? -1 : Common::CountLeadingZeros(b);
int s = clz_a - clz_b; int s = clz_a - clz_b;
// Decide how many bits to rotate right by, to put the low bit of that basic // Decide how many bits to rotate right by, to put the low bit of that basic
@ -252,11 +244,11 @@ bool IsImmLogical(uint64_t value, unsigned int width, unsigned int* n, unsigned
// 11110s 2 UInt(s) // 11110s 2 UInt(s)
// //
// So we 'or' (-d << 1) with our computed s to form imms. // So we 'or' (-d << 1) with our computed s to form imms.
*n = out_n; return std::tuple{
*imm_s = ((-d << 1) | (s - 1)) & 0x3f; static_cast<u32>(out_n),
*imm_r = r; static_cast<u32>(((-d << 1) | (s - 1)) & 0x3f),
static_cast<u32>(r),
return true; };
} }
float FPImm8ToFloat(u8 bits) float FPImm8ToFloat(u8 bits)
@ -270,7 +262,7 @@ float FPImm8ToFloat(u8 bits)
return Common::BitCast<float>(f); return Common::BitCast<float>(f);
} }
bool FPImm8FromFloat(float value, u8* imm_out) std::optional<u8> FPImm8FromFloat(float value)
{ {
const u32 f = Common::BitCast<u32>(value); const u32 f = Common::BitCast<u32>(value);
const u32 mantissa4 = (f & 0x7FFFFF) >> 19; const u32 mantissa4 = (f & 0x7FFFFF) >> 19;
@ -278,16 +270,15 @@ bool FPImm8FromFloat(float value, u8* imm_out)
const u32 sign = f >> 31; const u32 sign = f >> 31;
if ((exponent >> 7) == ((exponent >> 6) & 1)) if ((exponent >> 7) == ((exponent >> 6) & 1))
return false; return std::nullopt;
const u8 imm8 = (sign << 7) | ((!(exponent >> 7)) << 6) | ((exponent & 3) << 4) | mantissa4; const u8 imm8 = (sign << 7) | ((!(exponent >> 7)) << 6) | ((exponent & 3) << 4) | mantissa4;
const float new_float = FPImm8ToFloat(imm8); const float new_float = FPImm8ToFloat(imm8);
if (new_float == value)
*imm_out = imm8;
else
return false;
return true; if (new_float != value)
return std::nullopt;
return imm8;
} }
} // Anonymous namespace } // Anonymous namespace
@ -776,7 +767,8 @@ void ARM64XEmitter::EncodeMOVWideInst(u32 op, ARM64Reg Rd, u32 imm, ShiftAmount
ASSERT_MSG(DYNA_REC, !(imm & ~0xFFFF), "%s: immediate out of range: %d", __func__, imm); ASSERT_MSG(DYNA_REC, !(imm & ~0xFFFF), "%s: immediate out of range: %d", __func__, imm);
Rd = DecodeReg(Rd); Rd = DecodeReg(Rd);
Write32((b64Bit << 31) | (op << 29) | (0x25 << 23) | (pos << 21) | (imm << 5) | Rd); Write32((b64Bit << 31) | (op << 29) | (0x25 << 23) | (static_cast<u32>(pos) << 21) | (imm << 5) |
Rd);
} }
void ARM64XEmitter::EncodeBitfieldMOVInst(u32 op, ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms) void ARM64XEmitter::EncodeBitfieldMOVInst(u32 op, ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms)
@ -923,41 +915,43 @@ void ARM64XEmitter::SetJumpTarget(FixupBranch const& branch)
switch (branch.type) switch (branch.type)
{ {
case 1: // CBNZ case FixupBranch::Type::CBNZ:
Not = true; Not = true;
case 0: // CBZ [[fallthrough]];
case FixupBranch::Type::CBZ:
{ {
ASSERT_MSG(DYNA_REC, IsInRangeImm19(distance), "%s(%d): Received too large distance: %" PRIx64, ASSERT_MSG(DYNA_REC, IsInRangeImm19(distance), "%s(%d): Received too large distance: %" PRIx64,
__func__, branch.type, distance); __func__, static_cast<int>(branch.type), distance);
bool b64Bit = Is64Bit(branch.reg); const bool b64Bit = Is64Bit(branch.reg);
ARM64Reg reg = DecodeReg(branch.reg); const ARM64Reg reg = DecodeReg(branch.reg);
inst = (b64Bit << 31) | (0x1A << 25) | (Not << 24) | (MaskImm19(distance) << 5) | reg; inst = (b64Bit << 31) | (0x1A << 25) | (Not << 24) | (MaskImm19(distance) << 5) | reg;
} }
break; break;
case 2: // B (conditional) case FixupBranch::Type::BConditional:
ASSERT_MSG(DYNA_REC, IsInRangeImm19(distance), "%s(%d): Received too large distance: %" PRIx64, ASSERT_MSG(DYNA_REC, IsInRangeImm19(distance), "%s(%d): Received too large distance: %" PRIx64,
__func__, branch.type, distance); __func__, static_cast<int>(branch.type), distance);
inst = (0x2A << 25) | (MaskImm19(distance) << 5) | branch.cond; inst = (0x2A << 25) | (MaskImm19(distance) << 5) | branch.cond;
break; break;
case 4: // TBNZ case FixupBranch::Type::TBNZ:
Not = true; Not = true;
case 3: // TBZ [[fallthrough]];
case FixupBranch::Type::TBZ:
{ {
ASSERT_MSG(DYNA_REC, IsInRangeImm14(distance), "%s(%d): Received too large distance: %" PRIx64, ASSERT_MSG(DYNA_REC, IsInRangeImm14(distance), "%s(%d): Received too large distance: %" PRIx64,
__func__, branch.type, distance); __func__, static_cast<int>(branch.type), distance);
ARM64Reg reg = DecodeReg(branch.reg); const ARM64Reg reg = DecodeReg(branch.reg);
inst = ((branch.bit & 0x20) << 26) | (0x1B << 25) | (Not << 24) | ((branch.bit & 0x1F) << 19) | inst = ((branch.bit & 0x20) << 26) | (0x1B << 25) | (Not << 24) | ((branch.bit & 0x1F) << 19) |
(MaskImm14(distance) << 5) | reg; (MaskImm14(distance) << 5) | reg;
} }
break; break;
case 5: // B (unconditional) case FixupBranch::Type::B:
ASSERT_MSG(DYNA_REC, IsInRangeImm26(distance), "%s(%d): Received too large distance: %" PRIx64, ASSERT_MSG(DYNA_REC, IsInRangeImm26(distance), "%s(%d): Received too large distance: %" PRIx64,
__func__, branch.type, distance); __func__, static_cast<int>(branch.type), distance);
inst = (0x5 << 26) | MaskImm26(distance); inst = (0x5 << 26) | MaskImm26(distance);
break; break;
case 6: // BL (unconditional) case FixupBranch::Type::BL:
ASSERT_MSG(DYNA_REC, IsInRangeImm26(distance), "%s(%d): Received too large distance: %" PRIx64, ASSERT_MSG(DYNA_REC, IsInRangeImm26(distance), "%s(%d): Received too large distance: %" PRIx64,
__func__, branch.type, distance); __func__, static_cast<int>(branch.type), distance);
inst = (0x25 << 26) | MaskImm26(distance); inst = (0x25 << 26) | MaskImm26(distance);
break; break;
} }
@ -967,65 +961,65 @@ void ARM64XEmitter::SetJumpTarget(FixupBranch const& branch)
FixupBranch ARM64XEmitter::CBZ(ARM64Reg Rt) FixupBranch ARM64XEmitter::CBZ(ARM64Reg Rt)
{ {
FixupBranch branch; FixupBranch branch{};
branch.ptr = m_code; branch.ptr = m_code;
branch.type = 0; branch.type = FixupBranch::Type::CBZ;
branch.reg = Rt; branch.reg = Rt;
HINT(HINT_NOP); NOP();
return branch; return branch;
} }
FixupBranch ARM64XEmitter::CBNZ(ARM64Reg Rt) FixupBranch ARM64XEmitter::CBNZ(ARM64Reg Rt)
{ {
FixupBranch branch; FixupBranch branch{};
branch.ptr = m_code; branch.ptr = m_code;
branch.type = 1; branch.type = FixupBranch::Type::CBNZ;
branch.reg = Rt; branch.reg = Rt;
HINT(HINT_NOP); NOP();
return branch; return branch;
} }
FixupBranch ARM64XEmitter::B(CCFlags cond) FixupBranch ARM64XEmitter::B(CCFlags cond)
{ {
FixupBranch branch; FixupBranch branch{};
branch.ptr = m_code; branch.ptr = m_code;
branch.type = 2; branch.type = FixupBranch::Type::BConditional;
branch.cond = cond; branch.cond = cond;
HINT(HINT_NOP); NOP();
return branch; return branch;
} }
FixupBranch ARM64XEmitter::TBZ(ARM64Reg Rt, u8 bit) FixupBranch ARM64XEmitter::TBZ(ARM64Reg Rt, u8 bit)
{ {
FixupBranch branch; FixupBranch branch{};
branch.ptr = m_code; branch.ptr = m_code;
branch.type = 3; branch.type = FixupBranch::Type::TBZ;
branch.reg = Rt; branch.reg = Rt;
branch.bit = bit; branch.bit = bit;
HINT(HINT_NOP); NOP();
return branch; return branch;
} }
FixupBranch ARM64XEmitter::TBNZ(ARM64Reg Rt, u8 bit) FixupBranch ARM64XEmitter::TBNZ(ARM64Reg Rt, u8 bit)
{ {
FixupBranch branch; FixupBranch branch{};
branch.ptr = m_code; branch.ptr = m_code;
branch.type = 4; branch.type = FixupBranch::Type::TBNZ;
branch.reg = Rt; branch.reg = Rt;
branch.bit = bit; branch.bit = bit;
HINT(HINT_NOP); NOP();
return branch; return branch;
} }
FixupBranch ARM64XEmitter::B() FixupBranch ARM64XEmitter::B()
{ {
FixupBranch branch; FixupBranch branch{};
branch.ptr = m_code; branch.ptr = m_code;
branch.type = 5; branch.type = FixupBranch::Type::B;
HINT(HINT_NOP); NOP();
return branch; return branch;
} }
FixupBranch ARM64XEmitter::BL() FixupBranch ARM64XEmitter::BL()
{ {
FixupBranch branch; FixupBranch branch{};
branch.ptr = m_code; branch.ptr = m_code;
branch.type = 6; branch.type = FixupBranch::Type::BL;
HINT(HINT_NOP); NOP();
return branch; return branch;
} }
@ -1156,15 +1150,15 @@ void ARM64XEmitter::_MSR(PStateField field, u8 imm)
u32 op1 = 0, op2 = 0; u32 op1 = 0, op2 = 0;
switch (field) switch (field)
{ {
case FIELD_SPSel: case PStateField::SPSel:
op1 = 0; op1 = 0;
op2 = 5; op2 = 5;
break; break;
case FIELD_DAIFSet: case PStateField::DAIFSet:
op1 = 3; op1 = 3;
op2 = 6; op2 = 6;
break; break;
case FIELD_DAIFClr: case PStateField::DAIFClr:
op1 = 3; op1 = 3;
op2 = 7; op2 = 7;
break; break;
@ -1179,35 +1173,35 @@ static void GetSystemReg(PStateField field, int& o0, int& op1, int& CRn, int& CR
{ {
switch (field) switch (field)
{ {
case FIELD_NZCV: case PStateField::NZCV:
o0 = 3; o0 = 3;
op1 = 3; op1 = 3;
CRn = 4; CRn = 4;
CRm = 2; CRm = 2;
op2 = 0; op2 = 0;
break; break;
case FIELD_FPCR: case PStateField::FPCR:
o0 = 3; o0 = 3;
op1 = 3; op1 = 3;
CRn = 4; CRn = 4;
CRm = 4; CRm = 4;
op2 = 0; op2 = 0;
break; break;
case FIELD_FPSR: case PStateField::FPSR:
o0 = 3; o0 = 3;
op1 = 3; op1 = 3;
CRn = 4; CRn = 4;
CRm = 4; CRm = 4;
op2 = 1; op2 = 1;
break; break;
case FIELD_PMCR_EL0: case PStateField::PMCR_EL0:
o0 = 3; o0 = 3;
op1 = 3; op1 = 3;
CRn = 9; CRn = 9;
CRm = 6; CRm = 6;
op2 = 0; op2 = 0;
break; break;
case FIELD_PMCCNTR_EL0: case PStateField::PMCCNTR_EL0:
o0 = 3; o0 = 3;
op1 = 3; op1 = 3;
CRn = 9; CRn = 9;
@ -1246,7 +1240,7 @@ void ARM64XEmitter::CNTVCT(Arm64Gen::ARM64Reg Rt)
void ARM64XEmitter::HINT(SystemHint op) void ARM64XEmitter::HINT(SystemHint op)
{ {
EncodeSystemInst(0, 3, 2, 0, op, WSP); EncodeSystemInst(0, 3, 2, 0, static_cast<u32>(op), WSP);
} }
void ARM64XEmitter::CLREX() void ARM64XEmitter::CLREX()
{ {
@ -1254,15 +1248,15 @@ void ARM64XEmitter::CLREX()
} }
void ARM64XEmitter::DSB(BarrierType type) void ARM64XEmitter::DSB(BarrierType type)
{ {
EncodeSystemInst(0, 3, 3, type, 4, WSP); EncodeSystemInst(0, 3, 3, static_cast<u32>(type), 4, WSP);
} }
void ARM64XEmitter::DMB(BarrierType type) void ARM64XEmitter::DMB(BarrierType type)
{ {
EncodeSystemInst(0, 3, 3, type, 5, WSP); EncodeSystemInst(0, 3, 3, static_cast<u32>(type), 5, WSP);
} }
void ARM64XEmitter::ISB(BarrierType type) void ARM64XEmitter::ISB(BarrierType type)
{ {
EncodeSystemInst(0, 3, 3, type, 6, WSP); EncodeSystemInst(0, 3, 3, static_cast<u32>(type), 6, WSP);
} }
// Add/Subtract (extended register) // Add/Subtract (extended register)
@ -2011,7 +2005,7 @@ void ARM64XEmitter::MOVI2R(ARM64Reg Rd, u64 imm, bool optimize)
{ {
// Zero immediate, just clear the register. EOR is pointless when we have MOVZ, which looks // Zero immediate, just clear the register. EOR is pointless when we have MOVZ, which looks
// clearer in disasm too. // clearer in disasm too.
MOVZ(Rd, 0, SHIFT_0); MOVZ(Rd, 0, ShiftAmount::Shift0);
return; return;
} }
@ -2029,7 +2023,7 @@ void ARM64XEmitter::MOVI2R(ARM64Reg Rd, u64 imm, bool optimize)
// Small negative integer. Use MOVN // Small negative integer. Use MOVN
if (!Is64Bit(Rd) && (imm | 0xFFFF0000) == imm) if (!Is64Bit(Rd) && (imm | 0xFFFF0000) == imm)
{ {
MOVN(Rd, ~imm, SHIFT_0); MOVN(Rd, ~imm, ShiftAmount::Shift0);
return; return;
} }
@ -2334,28 +2328,28 @@ void ARM64FloatEmitter::EmitConvertScalarToInt(ARM64Reg Rd, ARM64Reg Rn, Roundin
if (IsGPR(Rd)) if (IsGPR(Rd))
{ {
// Use the encoding that transfers the result to a GPR. // Use the encoding that transfers the result to a GPR.
bool sf = Is64Bit(Rd); const bool sf = Is64Bit(Rd);
int type = IsDouble(Rn) ? 1 : 0; const int type = IsDouble(Rn) ? 1 : 0;
Rd = DecodeReg(Rd); Rd = DecodeReg(Rd);
Rn = DecodeReg(Rn); Rn = DecodeReg(Rn);
int opcode = (sign ? 1 : 0); int opcode = (sign ? 1 : 0);
int rmode = 0; int rmode = 0;
switch (round) switch (round)
{ {
case ROUND_A: case RoundingMode::A:
rmode = 0; rmode = 0;
opcode |= 4; opcode |= 4;
break; break;
case ROUND_P: case RoundingMode::P:
rmode = 1; rmode = 1;
break; break;
case ROUND_M: case RoundingMode::M:
rmode = 2; rmode = 2;
break; break;
case ROUND_Z: case RoundingMode::Z:
rmode = 3; rmode = 3;
break; break;
case ROUND_N: case RoundingMode::N:
rmode = 0; rmode = 0;
break; break;
} }
@ -2370,20 +2364,20 @@ void ARM64FloatEmitter::EmitConvertScalarToInt(ARM64Reg Rd, ARM64Reg Rn, Roundin
int opcode = 0; int opcode = 0;
switch (round) switch (round)
{ {
case ROUND_A: case RoundingMode::A:
opcode = 0x1C; opcode = 0x1C;
break; break;
case ROUND_N: case RoundingMode::N:
opcode = 0x1A; opcode = 0x1A;
break; break;
case ROUND_M: case RoundingMode::M:
opcode = 0x1B; opcode = 0x1B;
break; break;
case ROUND_P: case RoundingMode::P:
opcode = 0x1A; opcode = 0x1A;
sz |= 2; sz |= 2;
break; break;
case ROUND_Z: case RoundingMode::Z:
opcode = 0x1B; opcode = 0x1B;
sz |= 2; sz |= 2;
break; break;
@ -4085,11 +4079,12 @@ void ARM64FloatEmitter::ABI_PopRegisters(BitSet32 registers, ARM64Reg tmp)
void ARM64XEmitter::ANDI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch) void ARM64XEmitter::ANDI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{ {
unsigned int n, imm_s, imm_r;
if (!Is64Bit(Rn)) if (!Is64Bit(Rn))
imm &= 0xFFFFFFFF; imm &= 0xFFFFFFFF;
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
if (const auto result = IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32))
{ {
const auto& [n, imm_s, imm_r] = *result;
AND(Rd, Rn, imm_r, imm_s, n != 0); AND(Rd, Rn, imm_r, imm_s, n != 0);
} }
else else
@ -4104,9 +4099,9 @@ void ARM64XEmitter::ANDI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
void ARM64XEmitter::ORRI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch) void ARM64XEmitter::ORRI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{ {
unsigned int n, imm_s, imm_r; if (const auto result = IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32))
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
{ {
const auto& [n, imm_s, imm_r] = *result;
ORR(Rd, Rn, imm_r, imm_s, n != 0); ORR(Rd, Rn, imm_r, imm_s, n != 0);
} }
else else
@ -4121,9 +4116,9 @@ void ARM64XEmitter::ORRI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
void ARM64XEmitter::EORI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch) void ARM64XEmitter::EORI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{ {
unsigned int n, imm_s, imm_r; if (const auto result = IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32))
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
{ {
const auto& [n, imm_s, imm_r] = *result;
EOR(Rd, Rn, imm_r, imm_s, n != 0); EOR(Rd, Rn, imm_r, imm_s, n != 0);
} }
else else
@ -4138,9 +4133,9 @@ void ARM64XEmitter::EORI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
void ARM64XEmitter::ANDSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch) void ARM64XEmitter::ANDSI2R(ARM64Reg Rd, ARM64Reg Rn, u64 imm, ARM64Reg scratch)
{ {
unsigned int n, imm_s, imm_r; if (const auto result = IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32))
if (IsImmLogical(imm, Is64Bit(Rn) ? 64 : 32, &n, &imm_s, &imm_r))
{ {
const auto& [n, imm_s, imm_r] = *result;
ANDS(Rd, Rn, imm_r, imm_s, n != 0); ANDS(Rd, Rn, imm_r, imm_s, n != 0);
} }
else else
@ -4266,76 +4261,79 @@ void ARM64XEmitter::CMPI2R(ARM64Reg Rn, u64 imm, ARM64Reg scratch)
bool ARM64XEmitter::TryADDI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm) bool ARM64XEmitter::TryADDI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
{ {
u32 val; if (const auto result = IsImmArithmetic(imm))
bool shift; {
if (IsImmArithmetic(imm, &val, &shift)) const auto [val, shift] = *result;
ADD(Rd, Rn, val, shift); ADD(Rd, Rn, val, shift);
else
return false;
return true; return true;
} }
return false;
}
bool ARM64XEmitter::TrySUBI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm) bool ARM64XEmitter::TrySUBI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
{ {
u32 val; if (const auto result = IsImmArithmetic(imm))
bool shift; {
if (IsImmArithmetic(imm, &val, &shift)) const auto [val, shift] = *result;
SUB(Rd, Rn, val, shift); SUB(Rd, Rn, val, shift);
else
return false;
return true; return true;
} }
return false;
}
bool ARM64XEmitter::TryCMPI2R(ARM64Reg Rn, u32 imm) bool ARM64XEmitter::TryCMPI2R(ARM64Reg Rn, u32 imm)
{ {
u32 val; if (const auto result = IsImmArithmetic(imm))
bool shift; {
if (IsImmArithmetic(imm, &val, &shift)) const auto [val, shift] = *result;
CMP(Rn, val, shift); CMP(Rn, val, shift);
else
return false;
return true; return true;
} }
return false;
}
bool ARM64XEmitter::TryANDI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm) bool ARM64XEmitter::TryANDI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
{ {
u32 n, imm_r, imm_s; if (const auto result = IsImmLogical(imm, 32))
if (IsImmLogical(imm, 32, &n, &imm_s, &imm_r)) {
const auto& [n, imm_s, imm_r] = *result;
AND(Rd, Rn, imm_r, imm_s, n != 0); AND(Rd, Rn, imm_r, imm_s, n != 0);
else
return false;
return true; return true;
} }
return false;
}
bool ARM64XEmitter::TryORRI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm) bool ARM64XEmitter::TryORRI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
{ {
u32 n, imm_r, imm_s; if (const auto result = IsImmLogical(imm, 32))
if (IsImmLogical(imm, 32, &n, &imm_s, &imm_r)) {
const auto& [n, imm_s, imm_r] = *result;
ORR(Rd, Rn, imm_r, imm_s, n != 0); ORR(Rd, Rn, imm_r, imm_s, n != 0);
else
return false;
return true; return true;
} }
return false;
}
bool ARM64XEmitter::TryEORI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm) bool ARM64XEmitter::TryEORI2R(ARM64Reg Rd, ARM64Reg Rn, u32 imm)
{ {
u32 n, imm_r, imm_s; if (const auto result = IsImmLogical(imm, 32))
if (IsImmLogical(imm, 32, &n, &imm_s, &imm_r)) {
const auto& [n, imm_s, imm_r] = *result;
EOR(Rd, Rn, imm_r, imm_s, n != 0); EOR(Rd, Rn, imm_r, imm_s, n != 0);
else
return false;
return true; return true;
} }
return false;
}
void ARM64FloatEmitter::MOVI2F(ARM64Reg Rd, float value, ARM64Reg scratch, bool negate) void ARM64FloatEmitter::MOVI2F(ARM64Reg Rd, float value, ARM64Reg scratch, bool negate)
{ {
ASSERT_MSG(DYNA_REC, !IsDouble(Rd), "MOVI2F does not yet support double precision"); ASSERT_MSG(DYNA_REC, !IsDouble(Rd), "MOVI2F does not yet support double precision");
uint8_t imm8;
if (value == 0.0) if (value == 0.0f)
{ {
FMOV(Rd, IsDouble(Rd) ? ZR : WZR); FMOV(Rd, IsDouble(Rd) ? ZR : WZR);
if (negate) if (negate)
@ -4343,9 +4341,9 @@ void ARM64FloatEmitter::MOVI2F(ARM64Reg Rd, float value, ARM64Reg scratch, bool
// TODO: There are some other values we could generate with the float-imm instruction, like // TODO: There are some other values we could generate with the float-imm instruction, like
// 1.0... // 1.0...
} }
else if (FPImm8FromFloat(value, &imm8)) else if (const auto imm = FPImm8FromFloat(value))
{ {
FMOV(Rd, imm8); FMOV(Rd, *imm);
} }
else else
{ {

93
Source/Core/Common/Arm64Emitter.h
View File

@ -302,69 +302,69 @@ enum IndexType
INDEX_SIGNED, // used in LDP/STP INDEX_SIGNED, // used in LDP/STP
}; };
enum ShiftAmount enum class ShiftAmount
{ {
SHIFT_0 = 0, Shift0,
SHIFT_16 = 1, Shift16,
SHIFT_32 = 2, Shift32,
SHIFT_48 = 3, Shift48,
}; };
enum RoundingMode enum class RoundingMode
{ {
ROUND_A, // round to nearest, ties to away A, // round to nearest, ties to away
ROUND_M, // round towards -inf M, // round towards -inf
ROUND_N, // round to nearest, ties to even N, // round to nearest, ties to even
ROUND_P, // round towards +inf P, // round towards +inf
ROUND_Z, // round towards zero Z, // round towards zero
}; };
struct FixupBranch struct FixupBranch
{ {
u8* ptr; enum class Type : u32
// Type defines {
// 0 = CBZ (32bit) CBZ,
// 1 = CBNZ (32bit) CBNZ,
// 2 = B (conditional) BConditional,
// 3 = TBZ TBZ,
// 4 = TBNZ TBNZ,
// 5 = B (unconditional) B,
// 6 = BL (unconditional) BL,
u32 type; };
u8* ptr;
Type type;
// Used with B.cond // Used with B.cond
CCFlags cond; CCFlags cond;
// Used with TBZ/TBNZ // Used with TBZ/TBNZ
u8 bit; u8 bit;
// Used with Test/Compare and Branch // Used with Test/Compare and Branch
ARM64Reg reg; ARM64Reg reg;
}; };
enum PStateField enum class PStateField
{ {
FIELD_SPSel = 0, SPSel = 0,
FIELD_DAIFSet, DAIFSet,
FIELD_DAIFClr, DAIFClr,
FIELD_NZCV, // The only system registers accessible from EL0 (user space) NZCV, // The only system registers accessible from EL0 (user space)
FIELD_PMCR_EL0, PMCR_EL0,
FIELD_PMCCNTR_EL0, PMCCNTR_EL0,
FIELD_FPCR = 0x340, FPCR = 0x340,
FIELD_FPSR = 0x341, FPSR = 0x341,
}; };
enum SystemHint enum class SystemHint
{ {
HINT_NOP = 0, NOP,
HINT_YIELD, YIELD,
HINT_WFE, WFE,
HINT_WFI, WFI,
HINT_SEV, SEV,
HINT_SEVL, SEVL,
}; };
enum BarrierType enum class BarrierType
{ {
OSHLD = 1, OSHLD = 1,
OSHST = 2, OSHST = 2,
@ -603,6 +603,13 @@ public:
void CNTVCT(ARM64Reg Rt); void CNTVCT(ARM64Reg Rt);
void HINT(SystemHint op); void HINT(SystemHint op);
void NOP() { HINT(SystemHint::NOP); }
void SEV() { HINT(SystemHint::SEV); }
void SEVL() { HINT(SystemHint::SEVL); }
void WFE() { HINT(SystemHint::WFE); }
void WFI() { HINT(SystemHint::WFI); }
void YIELD() { HINT(SystemHint::YIELD); }
void CLREX(); void CLREX();
void DSB(BarrierType type); void DSB(BarrierType type);
void DMB(BarrierType type); void DMB(BarrierType type);
@ -737,9 +744,9 @@ public:
void CMP(ARM64Reg Rn, u32 imm, bool shift = false); void CMP(ARM64Reg Rn, u32 imm, bool shift = false);
// Data Processing (Immediate) // Data Processing (Immediate)
void MOVZ(ARM64Reg Rd, u32 imm, ShiftAmount pos = SHIFT_0); void MOVZ(ARM64Reg Rd, u32 imm, ShiftAmount pos = ShiftAmount::Shift0);
void MOVN(ARM64Reg Rd, u32 imm, ShiftAmount pos = SHIFT_0); void MOVN(ARM64Reg Rd, u32 imm, ShiftAmount pos = ShiftAmount::Shift0);
void MOVK(ARM64Reg Rd, u32 imm, ShiftAmount pos = SHIFT_0); void MOVK(ARM64Reg Rd, u32 imm, ShiftAmount pos = ShiftAmount::Shift0);
// Bitfield move // Bitfield move
void BFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms); void BFM(ARM64Reg Rd, ARM64Reg Rn, u32 immr, u32 imms);

4
Source/Core/Core/PowerPC/JitArm64/JitArm64Cache.cpp
View File

@ -19,8 +19,8 @@ void JitArm64BlockCache::WriteLinkBlock(Arm64Gen::ARM64XEmitter& emit,
if (!dest) if (!dest)
{ {
// Use a fixed amount of instructions, so we can assume to use 3 instructions on patching. // Use a fixed amount of instructions, so we can assume to use 3 instructions on patching.
emit.MOVZ(DISPATCHER_PC, source.exitAddress & 0xFFFF, SHIFT_0); emit.MOVZ(DISPATCHER_PC, source.exitAddress & 0xFFFF, ShiftAmount::Shift0);
emit.MOVK(DISPATCHER_PC, source.exitAddress >> 16, SHIFT_16); emit.MOVK(DISPATCHER_PC, source.exitAddress >> 16, ShiftAmount::Shift16);
if (source.call) if (source.call)
emit.BL(m_jit.GetAsmRoutines()->dispatcher); emit.BL(m_jit.GetAsmRoutines()->dispatcher);

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_BackPatch.cpp
View File

@ -322,7 +322,7 @@ bool JitArm64::HandleFastmemFault(uintptr_t access_address, SContext* ctx)
const u32 num_insts_max = fastmem_area_length / 4 - 1; const u32 num_insts_max = fastmem_area_length / 4 - 1;
for (u32 i = 0; i < num_insts_max; ++i) for (u32 i = 0; i < num_insts_max; ++i)
emitter.HINT(HINT_NOP); emitter.NOP();
m_fault_to_handler.erase(slow_handler_iter); m_fault_to_handler.erase(slow_handler_iter);

4
Source/Core/Core/PowerPC/JitArm64/JitArm64_FloatingPoint.cpp
View File

@ -335,13 +335,13 @@ void JitArm64::fctiwzx(UGeckoInstruction inst)
if (single) if (single)
{ {
m_float_emit.FCVTS(EncodeRegToSingle(VD), EncodeRegToSingle(VB), ROUND_Z); m_float_emit.FCVTS(EncodeRegToSingle(VD), EncodeRegToSingle(VB), RoundingMode::Z);
} }
else else
{ {
ARM64Reg V1 = gpr.GetReg(); ARM64Reg V1 = gpr.GetReg();
m_float_emit.FCVTS(V1, EncodeRegToDouble(VB), ROUND_Z); m_float_emit.FCVTS(V1, EncodeRegToDouble(VB), RoundingMode::Z);
m_float_emit.FMOV(EncodeRegToSingle(VD), V1); m_float_emit.FMOV(EncodeRegToSingle(VD), V1);
gpr.Unlock(V1); gpr.Unlock(V1);

2
Source/Core/Core/PowerPC/JitArm64/JitArm64_SystemRegisters.cpp
View File

@ -261,7 +261,7 @@ void JitArm64::mfspr(UGeckoInstruction inst)
m_float_emit.LDR(32, INDEX_UNSIGNED, SD, Xg, m_float_emit.LDR(32, INDEX_UNSIGNED, SD, Xg,
offsetof(CoreTiming::Globals, last_OC_factor_inverted)); offsetof(CoreTiming::Globals, last_OC_factor_inverted));
m_float_emit.FMUL(SC, SC, SD); m_float_emit.FMUL(SC, SC, SD);
m_float_emit.FCVTS(Xresult, SC, ROUND_Z); m_float_emit.FCVTS(Xresult, SC, RoundingMode::Z);
LDP(INDEX_SIGNED, XA, XB, Xg, offsetof(CoreTiming::Globals, global_timer)); LDP(INDEX_SIGNED, XA, XB, Xg, offsetof(CoreTiming::Globals, global_timer));
SXTW(XB, WB); SXTW(XB, WB);