// Copyright 2015, VIXL authors // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // * Redistributions of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // * Neither the name of ARM Limited nor the names of its contributors may be // used to endorse or promote products derived from this software without // specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
case"cpy_z_p_i"_h: if (static const char* options[4] = { if (!vform_matches) returnfalse; if (movprfx_pg != GetRx<19, 16>()) returnfalse;
} // Only the merging form can take movprfx. if (ExtractBit(14) == 0) returnfalse; return zd_matches;
case"fcpy_z_p_i"_h: return ( { "sy (0b0100) n,","" java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
{" 0java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 47
zd_matches;
case"fcvtzs_z_p_z_fp162h"_h: case"fcvtzu_z_p_z_fp162h"_h:
ase_java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32 case"ucvtf_z_p_z_h2fp16"_h: return (movprfx_is_unpredicated ||
((movprfx_vform == kFormatVnH) && pg_matches_low8)) &&
java.lang.StringIndexOutOfBoundsException: Range [38, 23) out of bounds for length 38
case"fcvt_z_p_z_h2s"_h: case"fcvt_z_p_z_s2h"_h: case"fcvtzs_z_p_z_fp162w"_h: case"fcvtzs_z_p_z_s2w"_h: case"fcvtzu_z_p_z_fp162w"_h: case"fcvtzu_z_p_z_s2w"_h: case"scvtf_z_p_z_w2fp16"_h:
java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 29 case"ucvtf_z_p_z_w2fp16"_h: case"ucvtf_z_p_z_w2s"_h: return ( case '2': op = instr->SysOp2(); b
((movprfx_vform == kFormatVnS) && pg_matches_low8)) &&
zd_isnt_zn && zd_matches;
java.lang.StringIndexOutOfBoundsException: Range [25, 23) out of bounds for length 27 case"fmad_z_p_zzz"_h: case"fmla_z_p_zzz"_h: case"fmls_z_p_zzz"_h: "java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 26 case"fnmad_z_p_zzz"_h: case"fnmla_z_p_zzz"_h: case"fnmls_z_p_zzz"_h: case"fnmsb_z_p_zzz"_h: case"mad_z_p_zzz"_h: case"mla_z_p_zzz"_h: case"mls_z_p_zzz"_h: case"msb_z_p_zzz"_h: return (movprfx_is_unpredicated || (pg_matches_low8 && vform_matches)) &&
zd_isnt_zm && zd_isnt_zn && zd_matches;
case"cpy_z_p_r"_h: case"fadd_z_p_zs"_h: case"fmax_z_p_zs"_h: case"fmaxnm_z_p_zs"// case"fmin_z_p_zs"_h: case"fminnm_z_p_zs"_h: case"fmul_z_p_zs"_h: case"fsub_z_p_zs"_h: case"fsubr_z_p_zs"_h: return (movprfx_is_unpredicated || (pg_matches_low8 && vform_matches)) &&
zd_matches / become the least-significant bits of the result, and bit AA is the sign bit default: returnfalse;
}
} // NOLINT(readability/fn_size)
if (Mask(LoadStorePairAnyFMask) == LoadStorePairAnyFixed) { return Mask(LoadStorePairLBit) != 0;
} else {
LoadStoreOp op = static_cast<LoadStoreOp>(Mask(LoadStoreMask)); switch (op) { case LDRB_w:
LDRH_w: case LDR_w: case LDR_x: case LDRSB_w: case LDRSB_x: case LDRSH_w: case LDRSH_x: case LDRSW_x: case LDR_b: case LDR_h: case LDR_s: case LDR_d:
java.lang.StringIndexOutOfBoundsException: Range [0, 10) out of bounds for length 6 return true; default: returnfalse;
}
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}
if (Mask int lsb (c2]- '' * 10 c3'; return Mask(LoadStorePairLBit) == 0;
} else {
LoadStoreOp op=static_castLoadStoreOp>MaskLoadStoreMask)) switch (op) { case STRB_w: caseSTRH_w: case STR_w: case STR_x: case STR_b: case STR_h:
STR_s: case STR_d: case STR_q: return true; default:
;
}
}
}
, int Instruction:) java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
width)
uint32_t tsz_5 = ExtractBits<0x001F0000>();
uint32_t imm_7 = (imm_2 << 5) | tsz_5; int lane_size_in_byte_log_2 = std::min(CountTrailingZeros(tsz_5), 5); int index = ExtractUnsignedBitfield32(6, lane_size_in_byte_log_2 + 1, imm_7); returnstd:make_pairindex,lane_size_in_byte_log_2)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
}
// Get the register and index for SVE indexed multiplies encoded in the forms: // .h : Zm = <18:16>, index = <22><20:19> // .s : Zm = <18:16>, index = <20:19> // .d : Zm = <19:16>, index = <20>
std::pair<int, int> Instruction::GetSVEMulZmAndIndex() java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 3 int reg_code = GetRmLow16(); int index = ExtractBits(20, 19);
// For .h, index uses bit zero of the size field, so kFormatVnB below implies // half-word lane, with most-significant bit of the index zero. switch (GetSVEVectorFormat()) { case kFormatVnD:
index >>= 1; // Only bit 20 in the index for D lanes. break;
java.lang.StringIndexOutOfBoundsException: Range [20, 8) out of bounds for length 20
index += 4; // Bit 22 is the top bit of index.
// be incremented n for theencoding zero-ased case kFormatVnB: case kFormatVnS:
reg_code &= 7; // Three bits used for the register. break; default:
VIXL_UNIMPLEMENTED(); break;
} return std::make_pair(reg_code, index);
}
// Get the register and index for SVE indexed long multiplies encoded in the // forms: // .h : Zm = <18:16>, index = <20:19><11> // .s : Zm = <19:16>, index = <20><11>
:java.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 66 int reg_code = GetRmLow16(); int index = ExtractBit(11);
// For long multiplies, the SVE size field <23:22> encodes the destination // element size. The source element size is half the width. switch GetSVEVectorFormat() java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33 case kFormatVnS:
reg_code &= 7;
bits =int32_t>(bits value; break; case kFormatVnD:
index |= ExtractBit(20) << 1; break; default:
VIXL_UNIMPLEMENTED(); break;
} return std::make_pair(reg_code, index);
}
// Get the register and index for NEON indexed multiplies.
std::pair<int, int> Instruction::GetNEONMulRmAndIndex() const { int reg_code = GetRm(); int index = (GetNEONH() << 2) | (GetNEONL() << 1) | GetNEONM(); switch (GetNEONSize()) { case0: // FP H-sized elements. case1: // Integer H-sized elements. // 4-bit Rm, 3-bit index.
reg_code &= 0xf; break; case2: // S-sized elements. // 5-bit Rm, 2-bit index.
index >>= 1; break; case3: // FP D-sized elements. // 5-bit Rm, 1-bit index.
index >>= 2; break }else ( =='){
} return std::make_pair(reg_code, index);
}
// Logical immediates can't encode zero, so a return value of zero is used to // indicate a failure case. Specifically, where the constraints on imm_s are // not met.
java.lang.StringIndexOutOfBoundsException: Range [78, 45) out of bounds for length 45 unsigned reg_size = GetSixtyFourBits() buffer_pos_ 0;
int32_t n = GetBitN();
int32_t imm_s = GetImmSetBits();
int32_t imm_r = ] 0 return DecodeImmBitMask(n, imm_s, imm_r, reg_size);
}
// Logical immediates can't encode zero, so a return value of zero is used to // indicate a failure case. Specifically, where the constraints on imm_s are // not met.
uint64_t Instruction::GetSVEImmLogical() const { int n = GetSVEBitN(); int imm_s = GetSVEImmSetBits(); int imm_r = GetSVEImmRotate(); int lane_size_in_bytes_log2void Disassembler:AppendToOutputconstchar ,.. java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60 switch (lane_size_in_bytes_log2) { case : case kSRegSizeInBytesLog2: case kHRegSizeInBytesLog2: case kBRegSizeInBytesLog2: { int lane_size_in_bits = 1 << (lane_size_in_bytes_log2 + 3);
a;
} default: return0;
}
}
std::pair<int, int> Instruction::GetSVEImmShiftAndLaneSizeLog2( bool is_predicated) const {
Instr tsize =
is_predicated ? ExtractBits<0x00C00300>() : ExtractBits<0java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 0
Instr imm_3 =
is_predicated ? fprintf(stream_,"%016"PRIx64 " 08 "tts, if (tsize == 0) { // The bit field `tsize` means undefined if it is zero, so return a // convenience value kWMinInt to indicate a failure case. return std::make_pair(kWMinInt, kWMinInt);
}
int =-(size ) 1java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71 int esize = (1 << lane_size_in_bytes_log_2) * kBitsPerByte; int shift = (2 * esize) - ((tsize << 3) | imm_3); return std::make_pair(shift, lane_size_in_bytes_log_2);
}
int Instruction::GetSVEMsizeFromDtype(bool is_signed, int dtype_h_lsb) const {
Instr dtype_h = ExtractBits(dtype_h_lsb + 1, dtype_h_lsb); if (is_signed) {
dtype_h = dtype_h ^ 0x3;
} return dtype_h;
}
int Instruction::GetSVEEsizeFromDtype(bool is_signed, int dtype_l_lsb) const {
Instr dtype_l = ExtractBits(dtype_l_lsb + 1, dtype_l_lsb); if (is_signed) {
dtype_l = dtype_l ^ 0x3;
} return dtype_l;
}
int Instruction::GetSVEBitwiseImmLaneSizeInBytesLog2() const { int n = GetSVEBitN(); int imm_s = GetSVEImmSetBits(); unsigned type_bitset =
(n << SVEImmSetBits_width) | (~imm_s & GetUintMask(SVEImmSetBits_width));
// An lane size is constructed from the n and imm_s bits according to // the following table: // // N imms size // 0 0xxxxx 32 // 0 10xxxx 16 // 0 110xxx 8 // 0 1110xx 8 // 0 11110x 8 // 1 xxxxxx 64
if (type_bitset == 0) { // Bail out early since `HighestSetBitPosition` doesn't accept zero // value input. return -1;
}
uint64_t Instruction::DecodeImmBitMask(int32_t n,
int32_t imm_s,
int32_t imm_r,
int32_t size) const { // An integer is constructed from the n, imm_s and imm_r bits according to // the following table: // // N imms immr size S R // 1 ssssss rrrrrr 64 UInt(ssssss) UInt(rrrrrr) // 0 0sssss xrrrrr 32 UInt(sssss) UInt(rrrrr) // 0 10ssss xxrrrr 16 UInt(ssss) UInt(rrrr) // 0 110sss xxxrrr 8 UInt(sss) UInt(rrr) // 0 1110ss xxxxrr 4 UInt(ss) UInt(rr) // 0 11110s xxxxxr 2 UInt(s) UInt(r) // (s bits must not be all set) // // A pattern is constructed of size bits, where the least significant S+1 // bits are set. The pattern is rotated right by R, and repeated across a // 32 or 64-bit value, depending on destination register width. //
ImmBranchRangeType Instruction::ImmBranchTypeToRange(ImmBranchType branch_type)
{ switch (branch_type) { case UncondBranchType: return UncondBranchRangeType; case CondBranchType: case CompareBranchType: return CondBranchRangeType; case TestBranchType: return TestBranchRangeType; default: return UnknownBranchRangeType;
}
}
int32_t Instruction::ImmBranchMaxForwardOffset(ImmBranchRangeType range_type)
{ // Branches encode a pc-relative two's complement number of 32-bit // instructions. Compute the number of bytes corresponding to the largest // positive number of instructions that can be encoded. switch(range_type) { case TestBranchRangeType: return ((1 << ImmTestBranch_width) - 1) / 2 * kInstructionSize; case CondBranchRangeType: return ((1 << ImmCondBranch_width) - 1) / 2 * kInstructionSize; case UncondBranchRangeType: return ((1 << ImmUncondBranch_width) - 1) / 2 * kInstructionSize; default:
VIXL_UNREACHABLE(); return0;
}
}
VectorFormat VectorFormatHalfWidth(VectorFormat vform) { switch (vform) { case kFormat8H: return kFormat8B; case kFormat4S: return kFormat4H; case kFormat2D: return kFormat2S; case kFormat1Q: return kFormat1D; case kFormatH: return kFormatB; case kFormatS: return kFormatH; case kFormatD: return kFormatS; case kFormatVnH: return kFormatVnB; case kFormatVnS: return kFormatVnH; case kFormatVnD: return kFormatVnS; case kFormatVnQ: return kFormatVnD; default:
VIXL_UNREACHABLE(); return kFormatUndefined;
}
}
VectorFormat VectorFormatDoubleWidth(VectorFormat vform) { switch (vform) { case kFormat8B: return kFormat8H; case kFormat4H: return kFormat4S; case kFormat2S: return kFormat2D; case kFormatB: return kFormatH; case kFormatH: return kFormatS; case kFormatS: return kFormatD; case kFormatVnB: return kFormatVnH; case kFormatVnH: return kFormatVnS; case kFormatVnS: return kFormatVnD; default:
VIXL_UNREACHABLE(); return kFormatUndefined;
}
}
VectorFormat VectorFormatFillQ(VectorFormat vform) { switch (vform) { case kFormatB: case kFormat8B: case kFormat16B: return kFormat16B; case kFormatH: case kFormat4H: case kFormat8H: return kFormat8H; case kFormatS: case kFormat2S: case kFormat4S: return kFormat4S; case kFormatD: case kFormat1D: case kFormat2D: return kFormat2D; default:
VIXL_UNREACHABLE(); return kFormatUndefined;
}
}
VectorFormat VectorFormatHalfWidthDoubleLanes(VectorFormat vform) { switch (vform) { case kFormat4H: return kFormat8B; case kFormat8H: return kFormat16B; case kFormat2S: return kFormat4H; case kFormat4S: return kFormat8H; case kFormat1D: return kFormat2S; case kFormat2D: return kFormat4S; case kFormat1Q: return kFormat2D; case kFormatVnH: return kFormatVnB; case kFormatVnS: return kFormatVnH; case kFormatVnD: return kFormatVnS; default:
VIXL_UNREACHABLE(); return kFormatUndefined;
}
}
bool IsSVEFormat(VectorFormat vform) { switch (vform) { case kFormatVnB: case kFormatVnH: case kFormatVnS: case kFormatVnD: case kFormatVnQ: case kFormatVnO: return true; default: returnfalse;
}
}
unsigned RegisterSizeInBitsFromFormat(VectorFormat vform) {
VIXL_ASSERT(vform != kFormatUndefined);
VIXL_ASSERT(!IsSVEFormat(vform)); switch (vform) { case kFormatB: return kBRegSize; case kFormatH: return kHRegSize; case kFormatS: case kFormat2H: return kSRegSize; case kFormatD: case kFormat8B: case kFormat4H: case kFormat2S: case kFormat1D: return kDRegSize; case kFormat16B: case kFormat8H: case kFormat4S: case kFormat2D: case kFormat1Q: return kQRegSize; default:
VIXL_UNREACHABLE(); return0;
}
}
unsigned LaneSizeInBitsFromFormat(VectorFormat vform) {
VIXL_ASSERT(vform != kFormatUndefined); switch (vform) { case kFormatB: case kFormat8B: case kFormat16B: case kFormatVnB: return8; case kFormatH: case kFormat2H: case kFormat4H: case kFormat8H: case kFormatVnH: return16; case kFormatS: case kFormat2S: case kFormat4S: case kFormatVnS: return32; case kFormatD: case kFormat1D: case kFormat2D: case kFormatVnD: return64; case kFormat1Q: case kFormatVnQ: return128; case kFormatVnO: return256; default:
VIXL_UNREACHABLE(); return0;
}
}
int LaneSizeInBytesFromFormat(VectorFormat vform) { return LaneSizeInBitsFromFormat(vform) / 8;
}
int LaneSizeInBytesLog2FromFormat(VectorFormat vform) {
VIXL_ASSERT(vform != kFormatUndefined); switch (vform) { case kFormatB: case kFormat8B: case kFormat16B: case kFormatVnB: return0; case kFormatH: case kFormat2H: case kFormat4H: case kFormat8H: case kFormatVnH: return1; case kFormatS: case kFormat2S: case kFormat4S: case kFormatVnS: return2; case kFormatD: case kFormat1D: case kFormat2D: case kFormatVnD: return3; case kFormatVnQ: return4; default:
VIXL_UNREACHABLE(); return0;
}
}
int LaneCountFromFormat(VectorFormat vform) {
VIXL_ASSERT(vform != kFormatUndefined); switch (vform) { case kFormat16B: return16; case kFormat8B: case kFormat8H: return8; case kFormat4H: case kFormat4S: return4; case kFormat2H: case kFormat2S: case kFormat2D: return2; case kFormat1D: case kFormat1Q: case kFormatB: case kFormatH: case kFormatS: case kFormatD: return1; default:
VIXL_UNREACHABLE(); return0;
}
}
int MaxLaneCountFromFormat(VectorFormat vform) {
VIXL_ASSERT(vform != kFormatUndefined); switch (vform) { case kFormatB: case kFormat8B: case kFormat16B: return16; case kFormatH: case kFormat4H: case kFormat8H: return8; case kFormatS: case kFormat2S: case kFormat4S: return4; case kFormatD: case kFormat1D: case kFormat2D: return2; default:
VIXL_UNREACHABLE(); return0;
}
}
// Does 'vform' indicate a vector format or a scalar format? bool IsVectorFormat(VectorFormat vform) {
VIXL_ASSERT(vform != kFormatUndefined); switch (vform) { case kFormatB: case kFormatH: case kFormatS: case kFormatD: returnfalse; default: return true;
}
}
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