| /* |
| * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2014, 2015, Red Hat Inc. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef CPU_AARCH64_VM_ASSEMBLER_AARCH64_HPP |
| #define CPU_AARCH64_VM_ASSEMBLER_AARCH64_HPP |
| |
| #include "asm/register.hpp" |
| |
| // definitions of various symbolic names for machine registers |
| |
| // First intercalls between C and Java which use 8 general registers |
| // and 8 floating registers |
| |
| // we also have to copy between x86 and ARM registers but that's a |
| // secondary complication -- not all code employing C call convention |
| // executes as x86 code though -- we generate some of it |
| |
| class Argument VALUE_OBJ_CLASS_SPEC { |
| public: |
| enum { |
| n_int_register_parameters_c = 8, // r0, r1, ... r7 (c_rarg0, c_rarg1, ...) |
| n_float_register_parameters_c = 8, // v0, v1, ... v7 (c_farg0, c_farg1, ... ) |
| |
| n_int_register_parameters_j = 8, // r1, ... r7, r0 (rj_rarg0, j_rarg1, ... |
| n_float_register_parameters_j = 8 // v0, v1, ... v7 (j_farg0, j_farg1, ... |
| }; |
| }; |
| |
| REGISTER_DECLARATION(Register, c_rarg0, r0); |
| REGISTER_DECLARATION(Register, c_rarg1, r1); |
| REGISTER_DECLARATION(Register, c_rarg2, r2); |
| REGISTER_DECLARATION(Register, c_rarg3, r3); |
| REGISTER_DECLARATION(Register, c_rarg4, r4); |
| REGISTER_DECLARATION(Register, c_rarg5, r5); |
| REGISTER_DECLARATION(Register, c_rarg6, r6); |
| REGISTER_DECLARATION(Register, c_rarg7, r7); |
| |
| REGISTER_DECLARATION(FloatRegister, c_farg0, v0); |
| REGISTER_DECLARATION(FloatRegister, c_farg1, v1); |
| REGISTER_DECLARATION(FloatRegister, c_farg2, v2); |
| REGISTER_DECLARATION(FloatRegister, c_farg3, v3); |
| REGISTER_DECLARATION(FloatRegister, c_farg4, v4); |
| REGISTER_DECLARATION(FloatRegister, c_farg5, v5); |
| REGISTER_DECLARATION(FloatRegister, c_farg6, v6); |
| REGISTER_DECLARATION(FloatRegister, c_farg7, v7); |
| |
| // Symbolically name the register arguments used by the Java calling convention. |
| // We have control over the convention for java so we can do what we please. |
| // What pleases us is to offset the java calling convention so that when |
| // we call a suitable jni method the arguments are lined up and we don't |
| // have to do much shuffling. A suitable jni method is non-static and a |
| // small number of arguments |
| // |
| // |--------------------------------------------------------------------| |
| // | c_rarg0 c_rarg1 c_rarg2 c_rarg3 c_rarg4 c_rarg5 c_rarg6 c_rarg7 | |
| // |--------------------------------------------------------------------| |
| // | r0 r1 r2 r3 r4 r5 r6 r7 | |
| // |--------------------------------------------------------------------| |
| // | j_rarg7 j_rarg0 j_rarg1 j_rarg2 j_rarg3 j_rarg4 j_rarg5 j_rarg6 | |
| // |--------------------------------------------------------------------| |
| |
| |
| REGISTER_DECLARATION(Register, j_rarg0, c_rarg1); |
| REGISTER_DECLARATION(Register, j_rarg1, c_rarg2); |
| REGISTER_DECLARATION(Register, j_rarg2, c_rarg3); |
| REGISTER_DECLARATION(Register, j_rarg3, c_rarg4); |
| REGISTER_DECLARATION(Register, j_rarg4, c_rarg5); |
| REGISTER_DECLARATION(Register, j_rarg5, c_rarg6); |
| REGISTER_DECLARATION(Register, j_rarg6, c_rarg7); |
| REGISTER_DECLARATION(Register, j_rarg7, c_rarg0); |
| |
| // Java floating args are passed as per C |
| |
| REGISTER_DECLARATION(FloatRegister, j_farg0, v0); |
| REGISTER_DECLARATION(FloatRegister, j_farg1, v1); |
| REGISTER_DECLARATION(FloatRegister, j_farg2, v2); |
| REGISTER_DECLARATION(FloatRegister, j_farg3, v3); |
| REGISTER_DECLARATION(FloatRegister, j_farg4, v4); |
| REGISTER_DECLARATION(FloatRegister, j_farg5, v5); |
| REGISTER_DECLARATION(FloatRegister, j_farg6, v6); |
| REGISTER_DECLARATION(FloatRegister, j_farg7, v7); |
| |
| // registers used to hold VM data either temporarily within a method |
| // or across method calls |
| |
| // volatile (caller-save) registers |
| |
| // r8 is used for indirect result location return |
| // we use it and r9 as scratch registers |
| REGISTER_DECLARATION(Register, rscratch1, r8); |
| REGISTER_DECLARATION(Register, rscratch2, r9); |
| |
| // current method -- must be in a call-clobbered register |
| REGISTER_DECLARATION(Register, rmethod, r12); |
| |
| // non-volatile (callee-save) registers are r16-29 |
| // of which the following are dedicated global state |
| |
| // link register |
| REGISTER_DECLARATION(Register, lr, r30); |
| // frame pointer |
| REGISTER_DECLARATION(Register, rfp, r29); |
| // current thread |
| REGISTER_DECLARATION(Register, rthread, r28); |
| // base of heap |
| REGISTER_DECLARATION(Register, rheapbase, r27); |
| // constant pool cache |
| REGISTER_DECLARATION(Register, rcpool, r26); |
| // monitors allocated on stack |
| REGISTER_DECLARATION(Register, rmonitors, r25); |
| // locals on stack |
| REGISTER_DECLARATION(Register, rlocals, r24); |
| // bytecode pointer |
| REGISTER_DECLARATION(Register, rbcp, r22); |
| // Dispatch table base |
| REGISTER_DECLARATION(Register, rdispatch, r21); |
| // Java stack pointer |
| REGISTER_DECLARATION(Register, esp, r20); |
| |
| #define assert_cond(ARG1) assert(ARG1, #ARG1) |
| |
| namespace asm_util { |
| uint32_t encode_logical_immediate(bool is32, uint64_t imm); |
| }; |
| |
| using namespace asm_util; |
| |
| |
| class Assembler; |
| |
| class Instruction_aarch64 { |
| unsigned insn; |
| #ifdef ASSERT |
| unsigned bits; |
| #endif |
| Assembler *assem; |
| |
| public: |
| |
| Instruction_aarch64(class Assembler *as) { |
| #ifdef ASSERT |
| bits = 0; |
| #endif |
| insn = 0; |
| assem = as; |
| } |
| |
| inline ~Instruction_aarch64(); |
| |
| unsigned &get_insn() { return insn; } |
| #ifdef ASSERT |
| unsigned &get_bits() { return bits; } |
| #endif |
| |
| static inline int32_t extend(unsigned val, int hi = 31, int lo = 0) { |
| union { |
| unsigned u; |
| int n; |
| }; |
| |
| u = val << (31 - hi); |
| n = n >> (31 - hi + lo); |
| return n; |
| } |
| |
| static inline uint32_t extract(uint32_t val, int msb, int lsb) { |
| int nbits = msb - lsb + 1; |
| assert_cond(msb >= lsb); |
| uint32_t mask = (1U << nbits) - 1; |
| uint32_t result = val >> lsb; |
| result &= mask; |
| return result; |
| } |
| |
| static inline int32_t sextract(uint32_t val, int msb, int lsb) { |
| uint32_t uval = extract(val, msb, lsb); |
| return extend(uval, msb - lsb); |
| } |
| |
| static void patch(address a, int msb, int lsb, unsigned long val) { |
| int nbits = msb - lsb + 1; |
| guarantee(val < (1U << nbits), "Field too big for insn"); |
| assert_cond(msb >= lsb); |
| unsigned mask = (1U << nbits) - 1; |
| val <<= lsb; |
| mask <<= lsb; |
| unsigned target = *(unsigned *)a; |
| target &= ~mask; |
| target |= val; |
| *(unsigned *)a = target; |
| } |
| |
| static void spatch(address a, int msb, int lsb, long val) { |
| int nbits = msb - lsb + 1; |
| long chk = val >> (nbits - 1); |
| guarantee (chk == -1 || chk == 0, "Field too big for insn"); |
| unsigned uval = val; |
| unsigned mask = (1U << nbits) - 1; |
| uval &= mask; |
| uval <<= lsb; |
| mask <<= lsb; |
| unsigned target = *(unsigned *)a; |
| target &= ~mask; |
| target |= uval; |
| *(unsigned *)a = target; |
| } |
| |
| void f(unsigned val, int msb, int lsb) { |
| int nbits = msb - lsb + 1; |
| guarantee(val < (1U << nbits), "Field too big for insn"); |
| assert_cond(msb >= lsb); |
| unsigned mask = (1U << nbits) - 1; |
| val <<= lsb; |
| mask <<= lsb; |
| insn |= val; |
| assert_cond((bits & mask) == 0); |
| #ifdef ASSERT |
| bits |= mask; |
| #endif |
| } |
| |
| void f(unsigned val, int bit) { |
| f(val, bit, bit); |
| } |
| |
| void sf(long val, int msb, int lsb) { |
| int nbits = msb - lsb + 1; |
| long chk = val >> (nbits - 1); |
| guarantee (chk == -1 || chk == 0, "Field too big for insn"); |
| unsigned uval = val; |
| unsigned mask = (1U << nbits) - 1; |
| uval &= mask; |
| f(uval, lsb + nbits - 1, lsb); |
| } |
| |
| void rf(Register r, int lsb) { |
| f(r->encoding_nocheck(), lsb + 4, lsb); |
| } |
| |
| // reg|ZR |
| void zrf(Register r, int lsb) { |
| f(r->encoding_nocheck() - (r == zr), lsb + 4, lsb); |
| } |
| |
| // reg|SP |
| void srf(Register r, int lsb) { |
| f(r == sp ? 31 : r->encoding_nocheck(), lsb + 4, lsb); |
| } |
| |
| void rf(FloatRegister r, int lsb) { |
| f(r->encoding_nocheck(), lsb + 4, lsb); |
| } |
| |
| unsigned get(int msb = 31, int lsb = 0) { |
| int nbits = msb - lsb + 1; |
| unsigned mask = ((1U << nbits) - 1) << lsb; |
| assert_cond(bits & mask == mask); |
| return (insn & mask) >> lsb; |
| } |
| |
| void fixed(unsigned value, unsigned mask) { |
| assert_cond ((mask & bits) == 0); |
| #ifdef ASSERT |
| bits |= mask; |
| #endif |
| insn |= value; |
| } |
| }; |
| |
| #define starti Instruction_aarch64 do_not_use(this); set_current(&do_not_use) |
| |
| class PrePost { |
| int _offset; |
| Register _r; |
| public: |
| PrePost(Register reg, int o) : _r(reg), _offset(o) { } |
| int offset() { return _offset; } |
| Register reg() { return _r; } |
| }; |
| |
| class Pre : public PrePost { |
| public: |
| Pre(Register reg, int o) : PrePost(reg, o) { } |
| }; |
| class Post : public PrePost { |
| public: |
| Post(Register reg, int o) : PrePost(reg, o) { } |
| }; |
| |
| namespace ext |
| { |
| enum operation { uxtb, uxth, uxtw, uxtx, sxtb, sxth, sxtw, sxtx }; |
| }; |
| |
| // abs methods which cannot overflow and so are well-defined across |
| // the entire domain of integer types. |
| static inline unsigned int uabs(unsigned int n) { |
| union { |
| unsigned int result; |
| int value; |
| }; |
| result = n; |
| if (value < 0) result = -result; |
| return result; |
| } |
| static inline unsigned long uabs(unsigned long n) { |
| union { |
| unsigned long result; |
| long value; |
| }; |
| result = n; |
| if (value < 0) result = -result; |
| return result; |
| } |
| static inline unsigned long uabs(long n) { return uabs((unsigned long)n); } |
| static inline unsigned long uabs(int n) { return uabs((unsigned int)n); } |
| |
| // Addressing modes |
| class Address VALUE_OBJ_CLASS_SPEC { |
| public: |
| |
| enum mode { no_mode, base_plus_offset, pre, post, pcrel, |
| base_plus_offset_reg, literal }; |
| |
| // Shift and extend for base reg + reg offset addressing |
| class extend { |
| int _option, _shift; |
| ext::operation _op; |
| public: |
| extend() { } |
| extend(int s, int o, ext::operation op) : _shift(s), _option(o), _op(op) { } |
| int option() const{ return _option; } |
| int shift() const { return _shift; } |
| ext::operation op() const { return _op; } |
| }; |
| class uxtw : public extend { |
| public: |
| uxtw(int shift = -1): extend(shift, 0b010, ext::uxtw) { } |
| }; |
| class lsl : public extend { |
| public: |
| lsl(int shift = -1): extend(shift, 0b011, ext::uxtx) { } |
| }; |
| class sxtw : public extend { |
| public: |
| sxtw(int shift = -1): extend(shift, 0b110, ext::sxtw) { } |
| }; |
| class sxtx : public extend { |
| public: |
| sxtx(int shift = -1): extend(shift, 0b111, ext::sxtx) { } |
| }; |
| |
| private: |
| Register _base; |
| Register _index; |
| long _offset; |
| enum mode _mode; |
| extend _ext; |
| |
| RelocationHolder _rspec; |
| |
| // Typically we use AddressLiterals we want to use their rval |
| // However in some situations we want the lval (effect address) of |
| // the item. We provide a special factory for making those lvals. |
| bool _is_lval; |
| |
| // If the target is far we'll need to load the ea of this to a |
| // register to reach it. Otherwise if near we can do PC-relative |
| // addressing. |
| address _target; |
| |
| public: |
| Address() |
| : _mode(no_mode) { } |
| Address(Register r) |
| : _mode(base_plus_offset), _base(r), _offset(0), _index(noreg), _target(0) { } |
| Address(Register r, int o) |
| : _mode(base_plus_offset), _base(r), _offset(o), _index(noreg), _target(0) { } |
| Address(Register r, long o) |
| : _mode(base_plus_offset), _base(r), _offset(o), _index(noreg), _target(0) { } |
| Address(Register r, unsigned long o) |
| : _mode(base_plus_offset), _base(r), _offset(o), _index(noreg), _target(0) { } |
| #ifdef ASSERT |
| Address(Register r, ByteSize disp) |
| : _mode(base_plus_offset), _base(r), _offset(in_bytes(disp)), |
| _index(noreg), _target(0) { } |
| #endif |
| Address(Register r, Register r1, extend ext = lsl()) |
| : _mode(base_plus_offset_reg), _base(r), _index(r1), |
| _ext(ext), _offset(0), _target(0) { } |
| Address(Pre p) |
| : _mode(pre), _base(p.reg()), _offset(p.offset()) { } |
| Address(Post p) |
| : _mode(post), _base(p.reg()), _offset(p.offset()), _target(0) { } |
| Address(address target, RelocationHolder const& rspec) |
| : _mode(literal), |
| _rspec(rspec), |
| _is_lval(false), |
| _target(target) { } |
| Address(address target, relocInfo::relocType rtype = relocInfo::external_word_type); |
| Address(Register base, RegisterOrConstant index, extend ext = lsl()) |
| : _base (base), |
| _ext(ext), _offset(0), _target(0) { |
| if (index.is_register()) { |
| _mode = base_plus_offset_reg; |
| _index = index.as_register(); |
| } else { |
| guarantee(ext.option() == ext::uxtx, "should be"); |
| assert(index.is_constant(), "should be"); |
| _mode = base_plus_offset; |
| _offset = index.as_constant() << ext.shift(); |
| } |
| } |
| |
| Register base() const { |
| guarantee((_mode == base_plus_offset | _mode == base_plus_offset_reg |
| | _mode == post), |
| "wrong mode"); |
| return _base; |
| } |
| long offset() const { |
| return _offset; |
| } |
| Register index() const { |
| return _index; |
| } |
| mode getMode() const { |
| return _mode; |
| } |
| bool uses(Register reg) const { return _base == reg || _index == reg; } |
| address target() const { return _target; } |
| const RelocationHolder& rspec() const { return _rspec; } |
| |
| void encode(Instruction_aarch64 *i) const { |
| i->f(0b111, 29, 27); |
| i->srf(_base, 5); |
| |
| switch(_mode) { |
| case base_plus_offset: |
| { |
| unsigned size = i->get(31, 30); |
| if (i->get(26, 26) && i->get(23, 23)) { |
| // SIMD Q Type - Size = 128 bits |
| assert(size == 0, "bad size"); |
| size = 0b100; |
| } |
| unsigned mask = (1 << size) - 1; |
| if (_offset < 0 || _offset & mask) |
| { |
| i->f(0b00, 25, 24); |
| i->f(0, 21), i->f(0b00, 11, 10); |
| i->sf(_offset, 20, 12); |
| } else { |
| i->f(0b01, 25, 24); |
| i->f(_offset >> size, 21, 10); |
| } |
| } |
| break; |
| |
| case base_plus_offset_reg: |
| { |
| i->f(0b00, 25, 24); |
| i->f(1, 21); |
| i->rf(_index, 16); |
| i->f(_ext.option(), 15, 13); |
| unsigned size = i->get(31, 30); |
| if (i->get(26, 26) && i->get(23, 23)) { |
| // SIMD Q Type - Size = 128 bits |
| assert(size == 0, "bad size"); |
| size = 0b100; |
| } |
| if (size == 0) // It's a byte |
| i->f(_ext.shift() >= 0, 12); |
| else { |
| if (_ext.shift() > 0) |
| assert(_ext.shift() == (int)size, "bad shift"); |
| i->f(_ext.shift() > 0, 12); |
| } |
| i->f(0b10, 11, 10); |
| } |
| break; |
| |
| case pre: |
| i->f(0b00, 25, 24); |
| i->f(0, 21), i->f(0b11, 11, 10); |
| i->sf(_offset, 20, 12); |
| break; |
| |
| case post: |
| i->f(0b00, 25, 24); |
| i->f(0, 21), i->f(0b01, 11, 10); |
| i->sf(_offset, 20, 12); |
| break; |
| |
| default: |
| ShouldNotReachHere(); |
| } |
| } |
| |
| void encode_pair(Instruction_aarch64 *i) const { |
| switch(_mode) { |
| case base_plus_offset: |
| i->f(0b010, 25, 23); |
| break; |
| case pre: |
| i->f(0b011, 25, 23); |
| break; |
| case post: |
| i->f(0b001, 25, 23); |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| |
| unsigned size; // Operand shift in 32-bit words |
| |
| if (i->get(26, 26)) { // float |
| switch(i->get(31, 30)) { |
| case 0b10: |
| size = 2; break; |
| case 0b01: |
| size = 1; break; |
| case 0b00: |
| size = 0; break; |
| default: |
| ShouldNotReachHere(); |
| size = 0; // unreachable |
| } |
| } else { |
| size = i->get(31, 31); |
| } |
| |
| size = 4 << size; |
| guarantee(_offset % size == 0, "bad offset"); |
| i->sf(_offset / size, 21, 15); |
| i->srf(_base, 5); |
| } |
| |
| void encode_nontemporal_pair(Instruction_aarch64 *i) const { |
| // Only base + offset is allowed |
| i->f(0b000, 25, 23); |
| unsigned size = i->get(31, 31); |
| size = 4 << size; |
| guarantee(_offset % size == 0, "bad offset"); |
| i->sf(_offset / size, 21, 15); |
| i->srf(_base, 5); |
| guarantee(_mode == Address::base_plus_offset, |
| "Bad addressing mode for non-temporal op"); |
| } |
| |
| void lea(MacroAssembler *, Register) const; |
| |
| static bool offset_ok_for_immed(long offset, int shift = 0) { |
| unsigned mask = (1 << shift) - 1; |
| if (offset < 0 || offset & mask) { |
| return (uabs(offset) < (1 << (20 - 12))); // Unscaled offset |
| } else { |
| return ((offset >> shift) < (1 << (21 - 10 + 1))); // Scaled, unsigned offset |
| } |
| } |
| }; |
| |
| // Convience classes |
| class RuntimeAddress: public Address { |
| |
| public: |
| |
| RuntimeAddress(address target) : Address(target, relocInfo::runtime_call_type) {} |
| |
| }; |
| |
| class OopAddress: public Address { |
| |
| public: |
| |
| OopAddress(address target) : Address(target, relocInfo::oop_type){} |
| |
| }; |
| |
| class ExternalAddress: public Address { |
| private: |
| static relocInfo::relocType reloc_for_target(address target) { |
| // Sometimes ExternalAddress is used for values which aren't |
| // exactly addresses, like the card table base. |
| // external_word_type can't be used for values in the first page |
| // so just skip the reloc in that case. |
| return external_word_Relocation::can_be_relocated(target) ? relocInfo::external_word_type : relocInfo::none; |
| } |
| |
| public: |
| |
| ExternalAddress(address target) : Address(target, reloc_for_target(target)) {} |
| |
| }; |
| |
| class InternalAddress: public Address { |
| |
| public: |
| |
| InternalAddress(address target) : Address(target, relocInfo::internal_word_type) {} |
| }; |
| |
| const int FPUStateSizeInWords = 32 * 2; |
| typedef enum { |
| PLDL1KEEP = 0b00000, PLDL1STRM, PLDL2KEEP, PLDL2STRM, PLDL3KEEP, PLDL3STRM, |
| PSTL1KEEP = 0b10000, PSTL1STRM, PSTL2KEEP, PSTL2STRM, PSTL3KEEP, PSTL3STRM, |
| PLIL1KEEP = 0b01000, PLIL1STRM, PLIL2KEEP, PLIL2STRM, PLIL3KEEP, PLIL3STRM |
| } prfop; |
| |
| class Assembler : public AbstractAssembler { |
| |
| #ifndef PRODUCT |
| static const unsigned long asm_bp; |
| |
| void emit_long(jint x) { |
| if ((unsigned long)pc() == asm_bp) |
| asm volatile ("nop"); |
| AbstractAssembler::emit_int32(x); |
| } |
| #else |
| void emit_long(jint x) { |
| AbstractAssembler::emit_int32(x); |
| } |
| #endif |
| |
| public: |
| |
| enum { instruction_size = 4 }; |
| |
| Address adjust(Register base, int offset, bool preIncrement) { |
| if (preIncrement) |
| return Address(Pre(base, offset)); |
| else |
| return Address(Post(base, offset)); |
| } |
| |
| Address pre(Register base, int offset) { |
| return adjust(base, offset, true); |
| } |
| |
| Address post (Register base, int offset) { |
| return adjust(base, offset, false); |
| } |
| |
| Instruction_aarch64* current; |
| |
| void set_current(Instruction_aarch64* i) { current = i; } |
| |
| void f(unsigned val, int msb, int lsb) { |
| current->f(val, msb, lsb); |
| } |
| void f(unsigned val, int msb) { |
| current->f(val, msb, msb); |
| } |
| void sf(long val, int msb, int lsb) { |
| current->sf(val, msb, lsb); |
| } |
| void rf(Register reg, int lsb) { |
| current->rf(reg, lsb); |
| } |
| void srf(Register reg, int lsb) { |
| current->srf(reg, lsb); |
| } |
| void zrf(Register reg, int lsb) { |
| current->zrf(reg, lsb); |
| } |
| void rf(FloatRegister reg, int lsb) { |
| current->rf(reg, lsb); |
| } |
| void fixed(unsigned value, unsigned mask) { |
| current->fixed(value, mask); |
| } |
| |
| void emit() { |
| emit_long(current->get_insn()); |
| assert_cond(current->get_bits() == 0xffffffff); |
| current = NULL; |
| } |
| |
| typedef void (Assembler::* uncond_branch_insn)(address dest); |
| typedef void (Assembler::* compare_and_branch_insn)(Register Rt, address dest); |
| typedef void (Assembler::* test_and_branch_insn)(Register Rt, int bitpos, address dest); |
| typedef void (Assembler::* prefetch_insn)(address target, prfop); |
| |
| void wrap_label(Label &L, uncond_branch_insn insn); |
| void wrap_label(Register r, Label &L, compare_and_branch_insn insn); |
| void wrap_label(Register r, int bitpos, Label &L, test_and_branch_insn insn); |
| void wrap_label(Label &L, prfop, prefetch_insn insn); |
| |
| // PC-rel. addressing |
| |
| void adr(Register Rd, address dest); |
| void _adrp(Register Rd, address dest); |
| |
| void adr(Register Rd, const Address &dest); |
| void _adrp(Register Rd, const Address &dest); |
| |
| void adr(Register Rd, Label &L) { |
| wrap_label(Rd, L, &Assembler::Assembler::adr); |
| } |
| void _adrp(Register Rd, Label &L) { |
| wrap_label(Rd, L, &Assembler::_adrp); |
| } |
| |
| void adrp(Register Rd, const Address &dest, unsigned long &offset); |
| |
| #undef INSN |
| |
| void add_sub_immediate(Register Rd, Register Rn, unsigned uimm, int op, |
| int negated_op); |
| |
| // Add/subtract (immediate) |
| #define INSN(NAME, decode, negated) \ |
| void NAME(Register Rd, Register Rn, unsigned imm, unsigned shift) { \ |
| starti; \ |
| f(decode, 31, 29), f(0b10001, 28, 24), f(shift, 23, 22), f(imm, 21, 10); \ |
| zrf(Rd, 0), srf(Rn, 5); \ |
| } \ |
| \ |
| void NAME(Register Rd, Register Rn, unsigned imm) { \ |
| starti; \ |
| add_sub_immediate(Rd, Rn, imm, decode, negated); \ |
| } |
| |
| INSN(addsw, 0b001, 0b011); |
| INSN(subsw, 0b011, 0b001); |
| INSN(adds, 0b101, 0b111); |
| INSN(subs, 0b111, 0b101); |
| |
| #undef INSN |
| |
| #define INSN(NAME, decode, negated) \ |
| void NAME(Register Rd, Register Rn, unsigned imm) { \ |
| starti; \ |
| add_sub_immediate(Rd, Rn, imm, decode, negated); \ |
| } |
| |
| INSN(addw, 0b000, 0b010); |
| INSN(subw, 0b010, 0b000); |
| INSN(add, 0b100, 0b110); |
| INSN(sub, 0b110, 0b100); |
| |
| #undef INSN |
| |
| // Logical (immediate) |
| #define INSN(NAME, decode, is32) \ |
| void NAME(Register Rd, Register Rn, uint64_t imm) { \ |
| starti; \ |
| uint32_t val = encode_logical_immediate(is32, imm); \ |
| f(decode, 31, 29), f(0b100100, 28, 23), f(val, 22, 10); \ |
| srf(Rd, 0), zrf(Rn, 5); \ |
| } |
| |
| INSN(andw, 0b000, true); |
| INSN(orrw, 0b001, true); |
| INSN(eorw, 0b010, true); |
| INSN(andr, 0b100, false); |
| INSN(orr, 0b101, false); |
| INSN(eor, 0b110, false); |
| |
| #undef INSN |
| |
| #define INSN(NAME, decode, is32) \ |
| void NAME(Register Rd, Register Rn, uint64_t imm) { \ |
| starti; \ |
| uint32_t val = encode_logical_immediate(is32, imm); \ |
| f(decode, 31, 29), f(0b100100, 28, 23), f(val, 22, 10); \ |
| zrf(Rd, 0), zrf(Rn, 5); \ |
| } |
| |
| INSN(ands, 0b111, false); |
| INSN(andsw, 0b011, true); |
| |
| #undef INSN |
| |
| // Move wide (immediate) |
| #define INSN(NAME, opcode) \ |
| void NAME(Register Rd, unsigned imm, unsigned shift = 0) { \ |
| assert_cond((shift/16)*16 == shift); \ |
| starti; \ |
| f(opcode, 31, 29), f(0b100101, 28, 23), f(shift/16, 22, 21), \ |
| f(imm, 20, 5); \ |
| rf(Rd, 0); \ |
| } |
| |
| INSN(movnw, 0b000); |
| INSN(movzw, 0b010); |
| INSN(movkw, 0b011); |
| INSN(movn, 0b100); |
| INSN(movz, 0b110); |
| INSN(movk, 0b111); |
| |
| #undef INSN |
| |
| // Bitfield |
| #define INSN(NAME, opcode) \ |
| void NAME(Register Rd, Register Rn, unsigned immr, unsigned imms) { \ |
| starti; \ |
| f(opcode, 31, 22), f(immr, 21, 16), f(imms, 15, 10); \ |
| rf(Rn, 5), rf(Rd, 0); \ |
| } |
| |
| INSN(sbfmw, 0b0001001100); |
| INSN(bfmw, 0b0011001100); |
| INSN(ubfmw, 0b0101001100); |
| INSN(sbfm, 0b1001001101); |
| INSN(bfm, 0b1011001101); |
| INSN(ubfm, 0b1101001101); |
| |
| #undef INSN |
| |
| // Extract |
| #define INSN(NAME, opcode) \ |
| void NAME(Register Rd, Register Rn, Register Rm, unsigned imms) { \ |
| starti; \ |
| f(opcode, 31, 21), f(imms, 15, 10); \ |
| rf(Rm, 16), rf(Rn, 5), rf(Rd, 0); \ |
| } |
| |
| INSN(extrw, 0b00010011100); |
| INSN(extr, 0b10010011110); |
| |
| #undef INSN |
| |
| // The maximum range of a branch is fixed for the AArch64 |
| // architecture. In debug mode we shrink it in order to test |
| // trampolines, but not so small that branches in the interpreter |
| // are out of range. |
| static const unsigned long branch_range = NOT_DEBUG(128 * M) DEBUG_ONLY(2 * M); |
| |
| static bool reachable_from_branch_at(address branch, address target) { |
| return uabs(target - branch) < branch_range; |
| } |
| |
| // Unconditional branch (immediate) |
| #define INSN(NAME, opcode) \ |
| void NAME(address dest) { \ |
| starti; \ |
| long offset = (dest - pc()) >> 2; \ |
| DEBUG_ONLY(assert(reachable_from_branch_at(pc(), dest), "debug only")); \ |
| f(opcode, 31), f(0b00101, 30, 26), sf(offset, 25, 0); \ |
| } \ |
| void NAME(Label &L) { \ |
| wrap_label(L, &Assembler::NAME); \ |
| } \ |
| void NAME(const Address &dest); |
| |
| INSN(b, 0); |
| INSN(bl, 1); |
| |
| #undef INSN |
| |
| // Compare & branch (immediate) |
| #define INSN(NAME, opcode) \ |
| void NAME(Register Rt, address dest) { \ |
| long offset = (dest - pc()) >> 2; \ |
| starti; \ |
| f(opcode, 31, 24), sf(offset, 23, 5), rf(Rt, 0); \ |
| } \ |
| void NAME(Register Rt, Label &L) { \ |
| wrap_label(Rt, L, &Assembler::NAME); \ |
| } |
| |
| INSN(cbzw, 0b00110100); |
| INSN(cbnzw, 0b00110101); |
| INSN(cbz, 0b10110100); |
| INSN(cbnz, 0b10110101); |
| |
| #undef INSN |
| |
| // Test & branch (immediate) |
| #define INSN(NAME, opcode) \ |
| void NAME(Register Rt, int bitpos, address dest) { \ |
| long offset = (dest - pc()) >> 2; \ |
| int b5 = bitpos >> 5; \ |
| bitpos &= 0x1f; \ |
| starti; \ |
| f(b5, 31), f(opcode, 30, 24), f(bitpos, 23, 19), sf(offset, 18, 5); \ |
| rf(Rt, 0); \ |
| } \ |
| void NAME(Register Rt, int bitpos, Label &L) { \ |
| wrap_label(Rt, bitpos, L, &Assembler::NAME); \ |
| } |
| |
| INSN(tbz, 0b0110110); |
| INSN(tbnz, 0b0110111); |
| |
| #undef INSN |
| |
| // Conditional branch (immediate) |
| enum Condition |
| {EQ, NE, HS, CS=HS, LO, CC=LO, MI, PL, VS, VC, HI, LS, GE, LT, GT, LE, AL, NV}; |
| |
| void br(Condition cond, address dest) { |
| long offset = (dest - pc()) >> 2; |
| starti; |
| f(0b0101010, 31, 25), f(0, 24), sf(offset, 23, 5), f(0, 4), f(cond, 3, 0); |
| } |
| |
| #define INSN(NAME, cond) \ |
| void NAME(address dest) { \ |
| br(cond, dest); \ |
| } |
| |
| INSN(beq, EQ); |
| INSN(bne, NE); |
| INSN(bhs, HS); |
| INSN(bcs, CS); |
| INSN(blo, LO); |
| INSN(bcc, CC); |
| INSN(bmi, MI); |
| INSN(bpl, PL); |
| INSN(bvs, VS); |
| INSN(bvc, VC); |
| INSN(bhi, HI); |
| INSN(bls, LS); |
| INSN(bge, GE); |
| INSN(blt, LT); |
| INSN(bgt, GT); |
| INSN(ble, LE); |
| INSN(bal, AL); |
| INSN(bnv, NV); |
| |
| void br(Condition cc, Label &L); |
| |
| #undef INSN |
| |
| // Exception generation |
| void generate_exception(int opc, int op2, int LL, unsigned imm) { |
| starti; |
| f(0b11010100, 31, 24); |
| f(opc, 23, 21), f(imm, 20, 5), f(op2, 4, 2), f(LL, 1, 0); |
| } |
| |
| #define INSN(NAME, opc, op2, LL) \ |
| void NAME(unsigned imm) { \ |
| generate_exception(opc, op2, LL, imm); \ |
| } |
| |
| INSN(svc, 0b000, 0, 0b01); |
| INSN(hvc, 0b000, 0, 0b10); |
| INSN(smc, 0b000, 0, 0b11); |
| INSN(brk, 0b001, 0, 0b00); |
| INSN(hlt, 0b010, 0, 0b00); |
| INSN(dpcs1, 0b101, 0, 0b01); |
| INSN(dpcs2, 0b101, 0, 0b10); |
| INSN(dpcs3, 0b101, 0, 0b11); |
| |
| #undef INSN |
| |
| // System |
| void system(int op0, int op1, int CRn, int CRm, int op2, |
| Register rt = dummy_reg) |
| { |
| starti; |
| f(0b11010101000, 31, 21); |
| f(op0, 20, 19); |
| f(op1, 18, 16); |
| f(CRn, 15, 12); |
| f(CRm, 11, 8); |
| f(op2, 7, 5); |
| rf(rt, 0); |
| } |
| |
| void hint(int imm) { |
| system(0b00, 0b011, 0b0010, imm, 0b000); |
| } |
| |
| void nop() { |
| hint(0); |
| } |
| // we only provide mrs and msr for the special purpose system |
| // registers where op1 (instr[20:19]) == 11 and, (currently) only |
| // use it for FPSR n.b msr has L (instr[21]) == 0 mrs has L == 1 |
| |
| void msr(int op1, int CRn, int CRm, int op2, Register rt) { |
| starti; |
| f(0b1101010100011, 31, 19); |
| f(op1, 18, 16); |
| f(CRn, 15, 12); |
| f(CRm, 11, 8); |
| f(op2, 7, 5); |
| // writing zr is ok |
| zrf(rt, 0); |
| } |
| |
| void mrs(int op1, int CRn, int CRm, int op2, Register rt) { |
| starti; |
| f(0b1101010100111, 31, 19); |
| f(op1, 18, 16); |
| f(CRn, 15, 12); |
| f(CRm, 11, 8); |
| f(op2, 7, 5); |
| // reading to zr is a mistake |
| rf(rt, 0); |
| } |
| |
| enum barrier {OSHLD = 0b0001, OSHST, OSH, NSHLD=0b0101, NSHST, NSH, |
| ISHLD = 0b1001, ISHST, ISH, LD=0b1101, ST, SY}; |
| |
| void dsb(barrier imm) { |
| system(0b00, 0b011, 0b00011, imm, 0b100); |
| } |
| |
| void dmb(barrier imm) { |
| system(0b00, 0b011, 0b00011, imm, 0b101); |
| } |
| |
| void isb() { |
| system(0b00, 0b011, 0b00011, SY, 0b110); |
| } |
| |
| void dc(Register Rt) { |
| system(0b01, 0b011, 0b0111, 0b1011, 0b001, Rt); |
| } |
| |
| void ic(Register Rt) { |
| system(0b01, 0b011, 0b0111, 0b0101, 0b001, Rt); |
| } |
| |
| // A more convenient access to dmb for our purposes |
| enum Membar_mask_bits { |
| // We can use ISH for a barrier because the ARM ARM says "This |
| // architecture assumes that all Processing Elements that use the |
| // same operating system or hypervisor are in the same Inner |
| // Shareable shareability domain." |
| StoreStore = ISHST, |
| LoadStore = ISHLD, |
| LoadLoad = ISHLD, |
| StoreLoad = ISH, |
| AnyAny = ISH |
| }; |
| |
| void membar(Membar_mask_bits order_constraint) { |
| dmb(Assembler::barrier(order_constraint)); |
| } |
| |
| // Unconditional branch (register) |
| void branch_reg(Register R, int opc) { |
| starti; |
| f(0b1101011, 31, 25); |
| f(opc, 24, 21); |
| f(0b11111000000, 20, 10); |
| rf(R, 5); |
| f(0b00000, 4, 0); |
| } |
| |
| #define INSN(NAME, opc) \ |
| void NAME(Register R) { \ |
| branch_reg(R, opc); \ |
| } |
| |
| INSN(br, 0b0000); |
| INSN(blr, 0b0001); |
| INSN(ret, 0b0010); |
| |
| void ret(void *p); // This forces a compile-time error for ret(0) |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc) \ |
| void NAME() { \ |
| branch_reg(dummy_reg, opc); \ |
| } |
| |
| INSN(eret, 0b0100); |
| INSN(drps, 0b0101); |
| |
| #undef INSN |
| |
| // Load/store exclusive |
| enum operand_size { byte, halfword, word, xword }; |
| |
| void load_store_exclusive(Register Rs, Register Rt1, Register Rt2, |
| Register Rn, enum operand_size sz, int op, bool ordered) { |
| starti; |
| f(sz, 31, 30), f(0b001000, 29, 24), f(op, 23, 21); |
| rf(Rs, 16), f(ordered, 15), rf(Rt2, 10), rf(Rn, 5), rf(Rt1, 0); |
| } |
| |
| void load_exclusive(Register dst, Register addr, |
| enum operand_size sz, bool ordered) { |
| load_store_exclusive(dummy_reg, dst, dummy_reg, addr, |
| sz, 0b010, ordered); |
| } |
| |
| void store_exclusive(Register status, Register new_val, Register addr, |
| enum operand_size sz, bool ordered) { |
| load_store_exclusive(status, new_val, dummy_reg, addr, |
| sz, 0b000, ordered); |
| } |
| |
| #define INSN4(NAME, sz, op, o0) /* Four registers */ \ |
| void NAME(Register Rs, Register Rt1, Register Rt2, Register Rn) { \ |
| guarantee(Rs != Rn && Rs != Rt1 && Rs != Rt2, "unpredictable instruction"); \ |
| load_store_exclusive(Rs, Rt1, Rt2, Rn, sz, op, o0); \ |
| } |
| |
| #define INSN3(NAME, sz, op, o0) /* Three registers */ \ |
| void NAME(Register Rs, Register Rt, Register Rn) { \ |
| guarantee(Rs != Rn && Rs != Rt, "unpredictable instruction"); \ |
| load_store_exclusive(Rs, Rt, dummy_reg, Rn, sz, op, o0); \ |
| } |
| |
| #define INSN2(NAME, sz, op, o0) /* Two registers */ \ |
| void NAME(Register Rt, Register Rn) { \ |
| load_store_exclusive(dummy_reg, Rt, dummy_reg, \ |
| Rn, sz, op, o0); \ |
| } |
| |
| #define INSN_FOO(NAME, sz, op, o0) /* Three registers, encoded differently */ \ |
| void NAME(Register Rt1, Register Rt2, Register Rn) { \ |
| guarantee(Rt1 != Rt2, "unpredictable instruction"); \ |
| load_store_exclusive(dummy_reg, Rt1, Rt2, Rn, sz, op, o0); \ |
| } |
| |
| // bytes |
| INSN3(stxrb, byte, 0b000, 0); |
| INSN3(stlxrb, byte, 0b000, 1); |
| INSN2(ldxrb, byte, 0b010, 0); |
| INSN2(ldaxrb, byte, 0b010, 1); |
| INSN2(stlrb, byte, 0b100, 1); |
| INSN2(ldarb, byte, 0b110, 1); |
| |
| // halfwords |
| INSN3(stxrh, halfword, 0b000, 0); |
| INSN3(stlxrh, halfword, 0b000, 1); |
| INSN2(ldxrh, halfword, 0b010, 0); |
| INSN2(ldaxrh, halfword, 0b010, 1); |
| INSN2(stlrh, halfword, 0b100, 1); |
| INSN2(ldarh, halfword, 0b110, 1); |
| |
| // words |
| INSN3(stxrw, word, 0b000, 0); |
| INSN3(stlxrw, word, 0b000, 1); |
| INSN4(stxpw, word, 0b001, 0); |
| INSN4(stlxpw, word, 0b001, 1); |
| INSN2(ldxrw, word, 0b010, 0); |
| INSN2(ldaxrw, word, 0b010, 1); |
| INSN_FOO(ldxpw, word, 0b011, 0); |
| INSN_FOO(ldaxpw, word, 0b011, 1); |
| INSN2(stlrw, word, 0b100, 1); |
| INSN2(ldarw, word, 0b110, 1); |
| |
| // xwords |
| INSN3(stxr, xword, 0b000, 0); |
| INSN3(stlxr, xword, 0b000, 1); |
| INSN4(stxp, xword, 0b001, 0); |
| INSN4(stlxp, xword, 0b001, 1); |
| INSN2(ldxr, xword, 0b010, 0); |
| INSN2(ldaxr, xword, 0b010, 1); |
| INSN_FOO(ldxp, xword, 0b011, 0); |
| INSN_FOO(ldaxp, xword, 0b011, 1); |
| INSN2(stlr, xword, 0b100, 1); |
| INSN2(ldar, xword, 0b110, 1); |
| |
| #undef INSN2 |
| #undef INSN3 |
| #undef INSN4 |
| #undef INSN_FOO |
| |
| // 8.1 Compare and swap extensions |
| void lse_cas(Register Rs, Register Rt, Register Rn, |
| enum operand_size sz, bool a, bool r, bool not_pair) { |
| starti; |
| if (! not_pair) { // Pair |
| assert(sz == word || sz == xword, "invalid size"); |
| /* The size bit is in bit 30, not 31 */ |
| sz = (operand_size)(sz == word ? 0b00:0b01); |
| } |
| f(sz, 31, 30), f(0b001000, 29, 24), f(1, 23), f(a, 22), f(1, 21); |
| rf(Rs, 16), f(r, 15), f(0b11111, 14, 10), rf(Rn, 5), rf(Rt, 0); |
| } |
| |
| // CAS |
| #define INSN(NAME, a, r) \ |
| void NAME(operand_size sz, Register Rs, Register Rt, Register Rn) { \ |
| assert(Rs != Rn && Rs != Rt, "unpredictable instruction"); \ |
| lse_cas(Rs, Rt, Rn, sz, a, r, true); \ |
| } |
| INSN(cas, false, false) |
| INSN(casa, true, false) |
| INSN(casl, false, true) |
| INSN(casal, true, true) |
| #undef INSN |
| |
| // CASP |
| #define INSN(NAME, a, r) \ |
| void NAME(operand_size sz, Register Rs, Register Rs1, \ |
| Register Rt, Register Rt1, Register Rn) { \ |
| assert((Rs->encoding() & 1) == 0 && (Rt->encoding() & 1) == 0 && \ |
| Rs->successor() == Rs1 && Rt->successor() == Rt1 && \ |
| Rs != Rn && Rs1 != Rn && Rs != Rt, "invalid registers"); \ |
| lse_cas(Rs, Rt, Rn, sz, a, r, false); \ |
| } |
| INSN(casp, false, false) |
| INSN(caspa, true, false) |
| INSN(caspl, false, true) |
| INSN(caspal, true, true) |
| #undef INSN |
| |
| // Load register (literal) |
| #define INSN(NAME, opc, V) \ |
| void NAME(Register Rt, address dest) { \ |
| long offset = (dest - pc()) >> 2; \ |
| starti; \ |
| f(opc, 31, 30), f(0b011, 29, 27), f(V, 26), f(0b00, 25, 24), \ |
| sf(offset, 23, 5); \ |
| rf(Rt, 0); \ |
| } \ |
| void NAME(Register Rt, address dest, relocInfo::relocType rtype) { \ |
| InstructionMark im(this); \ |
| guarantee(rtype == relocInfo::internal_word_type, \ |
| "only internal_word_type relocs make sense here"); \ |
| code_section()->relocate(inst_mark(), InternalAddress(dest).rspec()); \ |
| NAME(Rt, dest); \ |
| } \ |
| void NAME(Register Rt, Label &L) { \ |
| wrap_label(Rt, L, &Assembler::NAME); \ |
| } |
| |
| INSN(ldrw, 0b00, 0); |
| INSN(ldr, 0b01, 0); |
| INSN(ldrsw, 0b10, 0); |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc, V) \ |
| void NAME(FloatRegister Rt, address dest) { \ |
| long offset = (dest - pc()) >> 2; \ |
| starti; \ |
| f(opc, 31, 30), f(0b011, 29, 27), f(V, 26), f(0b00, 25, 24), \ |
| sf(offset, 23, 5); \ |
| rf((Register)Rt, 0); \ |
| } |
| |
| INSN(ldrs, 0b00, 1); |
| INSN(ldrd, 0b01, 1); |
| INSN(ldrq, 0b10, 1); |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc, V) \ |
| void NAME(address dest, prfop op = PLDL1KEEP) { \ |
| long offset = (dest - pc()) >> 2; \ |
| starti; \ |
| f(opc, 31, 30), f(0b011, 29, 27), f(V, 26), f(0b00, 25, 24), \ |
| sf(offset, 23, 5); \ |
| f(op, 4, 0); \ |
| } \ |
| void NAME(Label &L, prfop op = PLDL1KEEP) { \ |
| wrap_label(L, op, &Assembler::NAME); \ |
| } |
| |
| INSN(prfm, 0b11, 0); |
| |
| #undef INSN |
| |
| // Load/store |
| void ld_st1(int opc, int p1, int V, int L, |
| Register Rt1, Register Rt2, Address adr, bool no_allocate) { |
| starti; |
| f(opc, 31, 30), f(p1, 29, 27), f(V, 26), f(L, 22); |
| zrf(Rt2, 10), zrf(Rt1, 0); |
| if (no_allocate) { |
| adr.encode_nontemporal_pair(current); |
| } else { |
| adr.encode_pair(current); |
| } |
| } |
| |
| // Load/store register pair (offset) |
| #define INSN(NAME, size, p1, V, L, no_allocate) \ |
| void NAME(Register Rt1, Register Rt2, Address adr) { \ |
| ld_st1(size, p1, V, L, Rt1, Rt2, adr, no_allocate); \ |
| } |
| |
| INSN(stpw, 0b00, 0b101, 0, 0, false); |
| INSN(ldpw, 0b00, 0b101, 0, 1, false); |
| INSN(ldpsw, 0b01, 0b101, 0, 1, false); |
| INSN(stp, 0b10, 0b101, 0, 0, false); |
| INSN(ldp, 0b10, 0b101, 0, 1, false); |
| |
| // Load/store no-allocate pair (offset) |
| INSN(stnpw, 0b00, 0b101, 0, 0, true); |
| INSN(ldnpw, 0b00, 0b101, 0, 1, true); |
| INSN(stnp, 0b10, 0b101, 0, 0, true); |
| INSN(ldnp, 0b10, 0b101, 0, 1, true); |
| |
| #undef INSN |
| |
| #define INSN(NAME, size, p1, V, L, no_allocate) \ |
| void NAME(FloatRegister Rt1, FloatRegister Rt2, Address adr) { \ |
| ld_st1(size, p1, V, L, (Register)Rt1, (Register)Rt2, adr, no_allocate); \ |
| } |
| |
| INSN(stps, 0b00, 0b101, 1, 0, false); |
| INSN(ldps, 0b00, 0b101, 1, 1, false); |
| INSN(stpd, 0b01, 0b101, 1, 0, false); |
| INSN(ldpd, 0b01, 0b101, 1, 1, false); |
| INSN(stpq, 0b10, 0b101, 1, 0, false); |
| INSN(ldpq, 0b10, 0b101, 1, 1, false); |
| |
| #undef INSN |
| |
| // Load/store register (all modes) |
| void ld_st2(Register Rt, const Address &adr, int size, int op, int V = 0) { |
| starti; |
| |
| f(V, 26); // general reg? |
| zrf(Rt, 0); |
| |
| // Encoding for literal loads is done here (rather than pushed |
| // down into Address::encode) because the encoding of this |
| // instruction is too different from all of the other forms to |
| // make it worth sharing. |
| if (adr.getMode() == Address::literal) { |
| assert(size == 0b10 || size == 0b11, "bad operand size in ldr"); |
| assert(op == 0b01, "literal form can only be used with loads"); |
| f(size & 0b01, 31, 30), f(0b011, 29, 27), f(0b00, 25, 24); |
| long offset = (adr.target() - pc()) >> 2; |
| sf(offset, 23, 5); |
| code_section()->relocate(pc(), adr.rspec()); |
| return; |
| } |
| |
| f(size, 31, 30); |
| f(op, 23, 22); // str |
| adr.encode(current); |
| } |
| |
| #define INSN(NAME, size, op) \ |
| void NAME(Register Rt, const Address &adr) { \ |
| ld_st2(Rt, adr, size, op); \ |
| } \ |
| |
| INSN(str, 0b11, 0b00); |
| INSN(strw, 0b10, 0b00); |
| INSN(strb, 0b00, 0b00); |
| INSN(strh, 0b01, 0b00); |
| |
| INSN(ldr, 0b11, 0b01); |
| INSN(ldrw, 0b10, 0b01); |
| INSN(ldrb, 0b00, 0b01); |
| INSN(ldrh, 0b01, 0b01); |
| |
| INSN(ldrsb, 0b00, 0b10); |
| INSN(ldrsbw, 0b00, 0b11); |
| INSN(ldrsh, 0b01, 0b10); |
| INSN(ldrshw, 0b01, 0b11); |
| INSN(ldrsw, 0b10, 0b10); |
| |
| #undef INSN |
| |
| #define INSN(NAME, size, op) \ |
| void NAME(const Address &adr, prfop pfop = PLDL1KEEP) { \ |
| ld_st2((Register)pfop, adr, size, op); \ |
| } |
| |
| INSN(prfm, 0b11, 0b10); // FIXME: PRFM should not be used with |
| // writeback modes, but the assembler |
| // doesn't enfore that. |
| |
| #undef INSN |
| |
| #define INSN(NAME, size, op) \ |
| void NAME(FloatRegister Rt, const Address &adr) { \ |
| ld_st2((Register)Rt, adr, size, op, 1); \ |
| } |
| |
| INSN(strd, 0b11, 0b00); |
| INSN(strs, 0b10, 0b00); |
| INSN(ldrd, 0b11, 0b01); |
| INSN(ldrs, 0b10, 0b01); |
| INSN(strq, 0b00, 0b10); |
| INSN(ldrq, 0x00, 0b11); |
| |
| #undef INSN |
| |
| enum shift_kind { LSL, LSR, ASR, ROR }; |
| |
| void op_shifted_reg(unsigned decode, |
| enum shift_kind kind, unsigned shift, |
| unsigned size, unsigned op) { |
| f(size, 31); |
| f(op, 30, 29); |
| f(decode, 28, 24); |
| f(shift, 15, 10); |
| f(kind, 23, 22); |
| } |
| |
| // Logical (shifted register) |
| #define INSN(NAME, size, op, N) \ |
| void NAME(Register Rd, Register Rn, Register Rm, \ |
| enum shift_kind kind = LSL, unsigned shift = 0) { \ |
| starti; \ |
| f(N, 21); \ |
| zrf(Rm, 16), zrf(Rn, 5), zrf(Rd, 0); \ |
| op_shifted_reg(0b01010, kind, shift, size, op); \ |
| } |
| |
| INSN(andr, 1, 0b00, 0); |
| INSN(orr, 1, 0b01, 0); |
| INSN(eor, 1, 0b10, 0); |
| INSN(ands, 1, 0b11, 0); |
| INSN(andw, 0, 0b00, 0); |
| INSN(orrw, 0, 0b01, 0); |
| INSN(eorw, 0, 0b10, 0); |
| INSN(andsw, 0, 0b11, 0); |
| |
| INSN(bic, 1, 0b00, 1); |
| INSN(orn, 1, 0b01, 1); |
| INSN(eon, 1, 0b10, 1); |
| INSN(bics, 1, 0b11, 1); |
| INSN(bicw, 0, 0b00, 1); |
| INSN(ornw, 0, 0b01, 1); |
| INSN(eonw, 0, 0b10, 1); |
| INSN(bicsw, 0, 0b11, 1); |
| |
| #undef INSN |
| |
| // Add/subtract (shifted register) |
| #define INSN(NAME, size, op) \ |
| void NAME(Register Rd, Register Rn, Register Rm, \ |
| enum shift_kind kind, unsigned shift = 0) { \ |
| starti; \ |
| f(0, 21); \ |
| assert_cond(kind != ROR); \ |
| zrf(Rd, 0), zrf(Rn, 5), zrf(Rm, 16); \ |
| op_shifted_reg(0b01011, kind, shift, size, op); \ |
| } |
| |
| INSN(add, 1, 0b000); |
| INSN(sub, 1, 0b10); |
| INSN(addw, 0, 0b000); |
| INSN(subw, 0, 0b10); |
| |
| INSN(adds, 1, 0b001); |
| INSN(subs, 1, 0b11); |
| INSN(addsw, 0, 0b001); |
| INSN(subsw, 0, 0b11); |
| |
| #undef INSN |
| |
| // Add/subtract (extended register) |
| #define INSN(NAME, op) \ |
| void NAME(Register Rd, Register Rn, Register Rm, \ |
| ext::operation option, int amount = 0) { \ |
| starti; \ |
| zrf(Rm, 16), srf(Rn, 5), srf(Rd, 0); \ |
| add_sub_extended_reg(op, 0b01011, Rd, Rn, Rm, 0b00, option, amount); \ |
| } |
| |
| void add_sub_extended_reg(unsigned op, unsigned decode, |
| Register Rd, Register Rn, Register Rm, |
| unsigned opt, ext::operation option, unsigned imm) { |
| guarantee(imm <= 4, "shift amount must be < 4"); |
| f(op, 31, 29), f(decode, 28, 24), f(opt, 23, 22), f(1, 21); |
| f(option, 15, 13), f(imm, 12, 10); |
| } |
| |
| INSN(addw, 0b000); |
| INSN(subw, 0b010); |
| INSN(add, 0b100); |
| INSN(sub, 0b110); |
| |
| #undef INSN |
| |
| #define INSN(NAME, op) \ |
| void NAME(Register Rd, Register Rn, Register Rm, \ |
| ext::operation option, int amount = 0) { \ |
| starti; \ |
| zrf(Rm, 16), srf(Rn, 5), zrf(Rd, 0); \ |
| add_sub_extended_reg(op, 0b01011, Rd, Rn, Rm, 0b00, option, amount); \ |
| } |
| |
| INSN(addsw, 0b001); |
| INSN(subsw, 0b011); |
| INSN(adds, 0b101); |
| INSN(subs, 0b111); |
| |
| #undef INSN |
| |
| // Aliases for short forms of add and sub |
| #define INSN(NAME) \ |
| void NAME(Register Rd, Register Rn, Register Rm) { \ |
| if (Rd == sp || Rn == sp) \ |
| NAME(Rd, Rn, Rm, ext::uxtx); \ |
| else \ |
| NAME(Rd, Rn, Rm, LSL); \ |
| } |
| |
| INSN(addw); |
| INSN(subw); |
| INSN(add); |
| INSN(sub); |
| |
| INSN(addsw); |
| INSN(subsw); |
| INSN(adds); |
| INSN(subs); |
| |
| #undef INSN |
| |
| // Add/subtract (with carry) |
| void add_sub_carry(unsigned op, Register Rd, Register Rn, Register Rm) { |
| starti; |
| f(op, 31, 29); |
| f(0b11010000, 28, 21); |
| f(0b000000, 15, 10); |
| zrf(Rm, 16), zrf(Rn, 5), zrf(Rd, 0); |
| } |
| |
| #define INSN(NAME, op) \ |
| void NAME(Register Rd, Register Rn, Register Rm) { \ |
| add_sub_carry(op, Rd, Rn, Rm); \ |
| } |
| |
| INSN(adcw, 0b000); |
| INSN(adcsw, 0b001); |
| INSN(sbcw, 0b010); |
| INSN(sbcsw, 0b011); |
| INSN(adc, 0b100); |
| INSN(adcs, 0b101); |
| INSN(sbc,0b110); |
| INSN(sbcs, 0b111); |
| |
| #undef INSN |
| |
| // Conditional compare (both kinds) |
| void conditional_compare(unsigned op, int o2, int o3, |
| Register Rn, unsigned imm5, unsigned nzcv, |
| unsigned cond) { |
| f(op, 31, 29); |
| f(0b11010010, 28, 21); |
| f(cond, 15, 12); |
| f(o2, 10); |
| f(o3, 4); |
| f(nzcv, 3, 0); |
| f(imm5, 20, 16), rf(Rn, 5); |
| } |
| |
| #define INSN(NAME, op) \ |
| void NAME(Register Rn, Register Rm, int imm, Condition cond) { \ |
| starti; \ |
| f(0, 11); \ |
| conditional_compare(op, 0, 0, Rn, (uintptr_t)Rm, imm, cond); \ |
| } \ |
| \ |
| void NAME(Register Rn, int imm5, int imm, Condition cond) { \ |
| starti; \ |
| f(1, 11); \ |
| conditional_compare(op, 0, 0, Rn, imm5, imm, cond); \ |
| } |
| |
| INSN(ccmnw, 0b001); |
| INSN(ccmpw, 0b011); |
| INSN(ccmn, 0b101); |
| INSN(ccmp, 0b111); |
| |
| #undef INSN |
| |
| // Conditional select |
| void conditional_select(unsigned op, unsigned op2, |
| Register Rd, Register Rn, Register Rm, |
| unsigned cond) { |
| starti; |
| f(op, 31, 29); |
| f(0b11010100, 28, 21); |
| f(cond, 15, 12); |
| f(op2, 11, 10); |
| zrf(Rm, 16), zrf(Rn, 5), rf(Rd, 0); |
| } |
| |
| #define INSN(NAME, op, op2) \ |
| void NAME(Register Rd, Register Rn, Register Rm, Condition cond) { \ |
| conditional_select(op, op2, Rd, Rn, Rm, cond); \ |
| } |
| |
| INSN(cselw, 0b000, 0b00); |
| INSN(csincw, 0b000, 0b01); |
| INSN(csinvw, 0b010, 0b00); |
| INSN(csnegw, 0b010, 0b01); |
| INSN(csel, 0b100, 0b00); |
| INSN(csinc, 0b100, 0b01); |
| INSN(csinv, 0b110, 0b00); |
| INSN(csneg, 0b110, 0b01); |
| |
| #undef INSN |
| |
| // Data processing |
| void data_processing(unsigned op29, unsigned opcode, |
| Register Rd, Register Rn) { |
| f(op29, 31, 29), f(0b11010110, 28, 21); |
| f(opcode, 15, 10); |
| rf(Rn, 5), rf(Rd, 0); |
| } |
| |
| // (1 source) |
| #define INSN(NAME, op29, opcode2, opcode) \ |
| void NAME(Register Rd, Register Rn) { \ |
| starti; \ |
| f(opcode2, 20, 16); \ |
| data_processing(op29, opcode, Rd, Rn); \ |
| } |
| |
| INSN(rbitw, 0b010, 0b00000, 0b00000); |
| INSN(rev16w, 0b010, 0b00000, 0b00001); |
| INSN(revw, 0b010, 0b00000, 0b00010); |
| INSN(clzw, 0b010, 0b00000, 0b00100); |
| INSN(clsw, 0b010, 0b00000, 0b00101); |
| |
| INSN(rbit, 0b110, 0b00000, 0b00000); |
| INSN(rev16, 0b110, 0b00000, 0b00001); |
| INSN(rev32, 0b110, 0b00000, 0b00010); |
| INSN(rev, 0b110, 0b00000, 0b00011); |
| INSN(clz, 0b110, 0b00000, 0b00100); |
| INSN(cls, 0b110, 0b00000, 0b00101); |
| |
| #undef INSN |
| |
| // (2 sources) |
| #define INSN(NAME, op29, opcode) \ |
| void NAME(Register Rd, Register Rn, Register Rm) { \ |
| starti; \ |
| rf(Rm, 16); \ |
| data_processing(op29, opcode, Rd, Rn); \ |
| } |
| |
| INSN(udivw, 0b000, 0b000010); |
| INSN(sdivw, 0b000, 0b000011); |
| INSN(lslvw, 0b000, 0b001000); |
| INSN(lsrvw, 0b000, 0b001001); |
| INSN(asrvw, 0b000, 0b001010); |
| INSN(rorvw, 0b000, 0b001011); |
| |
| INSN(udiv, 0b100, 0b000010); |
| INSN(sdiv, 0b100, 0b000011); |
| INSN(lslv, 0b100, 0b001000); |
| INSN(lsrv, 0b100, 0b001001); |
| INSN(asrv, 0b100, 0b001010); |
| INSN(rorv, 0b100, 0b001011); |
| |
| #undef INSN |
| |
| // (3 sources) |
| void data_processing(unsigned op54, unsigned op31, unsigned o0, |
| Register Rd, Register Rn, Register Rm, |
| Register Ra) { |
| starti; |
| f(op54, 31, 29), f(0b11011, 28, 24); |
| f(op31, 23, 21), f(o0, 15); |
| zrf(Rm, 16), zrf(Ra, 10), zrf(Rn, 5), zrf(Rd, 0); |
| } |
| |
| #define INSN(NAME, op54, op31, o0) \ |
| void NAME(Register Rd, Register Rn, Register Rm, Register Ra) { \ |
| data_processing(op54, op31, o0, Rd, Rn, Rm, Ra); \ |
| } |
| |
| INSN(maddw, 0b000, 0b000, 0); |
| INSN(msubw, 0b000, 0b000, 1); |
| INSN(madd, 0b100, 0b000, 0); |
| INSN(msub, 0b100, 0b000, 1); |
| INSN(smaddl, 0b100, 0b001, 0); |
| INSN(smsubl, 0b100, 0b001, 1); |
| INSN(umaddl, 0b100, 0b101, 0); |
| INSN(umsubl, 0b100, 0b101, 1); |
| |
| #undef INSN |
| |
| #define INSN(NAME, op54, op31, o0) \ |
| void NAME(Register Rd, Register Rn, Register Rm) { \ |
| data_processing(op54, op31, o0, Rd, Rn, Rm, (Register)31); \ |
| } |
| |
| INSN(smulh, 0b100, 0b010, 0); |
| INSN(umulh, 0b100, 0b110, 0); |
| |
| #undef INSN |
| |
| // Floating-point data-processing (1 source) |
| void data_processing(unsigned op31, unsigned type, unsigned opcode, |
| FloatRegister Vd, FloatRegister Vn) { |
| starti; |
| f(op31, 31, 29); |
| f(0b11110, 28, 24); |
| f(type, 23, 22), f(1, 21), f(opcode, 20, 15), f(0b10000, 14, 10); |
| rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| #define INSN(NAME, op31, type, opcode) \ |
| void NAME(FloatRegister Vd, FloatRegister Vn) { \ |
| data_processing(op31, type, opcode, Vd, Vn); \ |
| } |
| |
| private: |
| INSN(i_fmovs, 0b000, 0b00, 0b000000); |
| public: |
| INSN(fabss, 0b000, 0b00, 0b000001); |
| INSN(fnegs, 0b000, 0b00, 0b000010); |
| INSN(fsqrts, 0b000, 0b00, 0b000011); |
| INSN(fcvts, 0b000, 0b00, 0b000101); // Single-precision to double-precision |
| |
| private: |
| INSN(i_fmovd, 0b000, 0b01, 0b000000); |
| public: |
| INSN(fabsd, 0b000, 0b01, 0b000001); |
| INSN(fnegd, 0b000, 0b01, 0b000010); |
| INSN(fsqrtd, 0b000, 0b01, 0b000011); |
| INSN(fcvtd, 0b000, 0b01, 0b000100); // Double-precision to single-precision |
| |
| void fmovd(FloatRegister Vd, FloatRegister Vn) { |
| assert(Vd != Vn, "should be"); |
| i_fmovd(Vd, Vn); |
| } |
| |
| void fmovs(FloatRegister Vd, FloatRegister Vn) { |
| assert(Vd != Vn, "should be"); |
| i_fmovs(Vd, Vn); |
| } |
| |
| #undef INSN |
| |
| // Floating-point data-processing (2 source) |
| void data_processing(unsigned op31, unsigned type, unsigned opcode, |
| FloatRegister Vd, FloatRegister Vn, FloatRegister Vm) { |
| starti; |
| f(op31, 31, 29); |
| f(0b11110, 28, 24); |
| f(type, 23, 22), f(1, 21), f(opcode, 15, 12), f(0b10, 11, 10); |
| rf(Vm, 16), rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| #define INSN(NAME, op31, type, opcode) \ |
| void NAME(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm) { \ |
| data_processing(op31, type, opcode, Vd, Vn, Vm); \ |
| } |
| |
| INSN(fmuls, 0b000, 0b00, 0b0000); |
| INSN(fdivs, 0b000, 0b00, 0b0001); |
| INSN(fadds, 0b000, 0b00, 0b0010); |
| INSN(fsubs, 0b000, 0b00, 0b0011); |
| INSN(fnmuls, 0b000, 0b00, 0b1000); |
| |
| INSN(fmuld, 0b000, 0b01, 0b0000); |
| INSN(fdivd, 0b000, 0b01, 0b0001); |
| INSN(faddd, 0b000, 0b01, 0b0010); |
| INSN(fsubd, 0b000, 0b01, 0b0011); |
| INSN(fnmuld, 0b000, 0b01, 0b1000); |
| |
| #undef INSN |
| |
| // Floating-point data-processing (3 source) |
| void data_processing(unsigned op31, unsigned type, unsigned o1, unsigned o0, |
| FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, |
| FloatRegister Va) { |
| starti; |
| f(op31, 31, 29); |
| f(0b11111, 28, 24); |
| f(type, 23, 22), f(o1, 21), f(o0, 15); |
| rf(Vm, 16), rf(Va, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| #define INSN(NAME, op31, type, o1, o0) \ |
| void NAME(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, \ |
| FloatRegister Va) { \ |
| data_processing(op31, type, o1, o0, Vd, Vn, Vm, Va); \ |
| } |
| |
| INSN(fmadds, 0b000, 0b00, 0, 0); |
| INSN(fmsubs, 0b000, 0b00, 0, 1); |
| INSN(fnmadds, 0b000, 0b00, 1, 0); |
| INSN(fnmsubs, 0b000, 0b00, 1, 1); |
| |
| INSN(fmaddd, 0b000, 0b01, 0, 0); |
| INSN(fmsubd, 0b000, 0b01, 0, 1); |
| INSN(fnmaddd, 0b000, 0b01, 1, 0); |
| INSN(fnmsub, 0b000, 0b01, 1, 1); |
| |
| #undef INSN |
| |
| // Floating-point conditional select |
| void fp_conditional_select(unsigned op31, unsigned type, |
| unsigned op1, unsigned op2, |
| Condition cond, FloatRegister Vd, |
| FloatRegister Vn, FloatRegister Vm) { |
| starti; |
| f(op31, 31, 29); |
| f(0b11110, 28, 24); |
| f(type, 23, 22); |
| f(op1, 21, 21); |
| f(op2, 11, 10); |
| f(cond, 15, 12); |
| rf(Vm, 16), rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| #define INSN(NAME, op31, type, op1, op2) \ |
| void NAME(FloatRegister Vd, FloatRegister Vn, \ |
| FloatRegister Vm, Condition cond) { \ |
| fp_conditional_select(op31, type, op1, op2, cond, Vd, Vn, Vm); \ |
| } |
| |
| INSN(fcsels, 0b000, 0b00, 0b1, 0b11); |
| INSN(fcseld, 0b000, 0b01, 0b1, 0b11); |
| |
| #undef INSN |
| |
| // Floating-point<->integer conversions |
| void float_int_convert(unsigned op31, unsigned type, |
| unsigned rmode, unsigned opcode, |
| Register Rd, Register Rn) { |
| starti; |
| f(op31, 31, 29); |
| f(0b11110, 28, 24); |
| f(type, 23, 22), f(1, 21), f(rmode, 20, 19); |
| f(opcode, 18, 16), f(0b000000, 15, 10); |
| zrf(Rn, 5), zrf(Rd, 0); |
| } |
| |
| #define INSN(NAME, op31, type, rmode, opcode) \ |
| void NAME(Register Rd, FloatRegister Vn) { \ |
| float_int_convert(op31, type, rmode, opcode, Rd, (Register)Vn); \ |
| } |
| |
| INSN(fcvtzsw, 0b000, 0b00, 0b11, 0b000); |
| INSN(fcvtzs, 0b100, 0b00, 0b11, 0b000); |
| INSN(fcvtzdw, 0b000, 0b01, 0b11, 0b000); |
| INSN(fcvtzd, 0b100, 0b01, 0b11, 0b000); |
| |
| INSN(fmovs, 0b000, 0b00, 0b00, 0b110); |
| INSN(fmovd, 0b100, 0b01, 0b00, 0b110); |
| |
| // INSN(fmovhid, 0b100, 0b10, 0b01, 0b110); |
| |
| #undef INSN |
| |
| #define INSN(NAME, op31, type, rmode, opcode) \ |
| void NAME(FloatRegister Vd, Register Rn) { \ |
| float_int_convert(op31, type, rmode, opcode, (Register)Vd, Rn); \ |
| } |
| |
| INSN(fmovs, 0b000, 0b00, 0b00, 0b111); |
| INSN(fmovd, 0b100, 0b01, 0b00, 0b111); |
| |
| INSN(scvtfws, 0b000, 0b00, 0b00, 0b010); |
| INSN(scvtfs, 0b100, 0b00, 0b00, 0b010); |
| INSN(scvtfwd, 0b000, 0b01, 0b00, 0b010); |
| INSN(scvtfd, 0b100, 0b01, 0b00, 0b010); |
| |
| // INSN(fmovhid, 0b100, 0b10, 0b01, 0b111); |
| |
| #undef INSN |
| |
| // Floating-point compare |
| void float_compare(unsigned op31, unsigned type, |
| unsigned op, unsigned op2, |
| FloatRegister Vn, FloatRegister Vm = (FloatRegister)0) { |
| starti; |
| f(op31, 31, 29); |
| f(0b11110, 28, 24); |
| f(type, 23, 22), f(1, 21); |
| f(op, 15, 14), f(0b1000, 13, 10), f(op2, 4, 0); |
| rf(Vn, 5), rf(Vm, 16); |
| } |
| |
| |
| #define INSN(NAME, op31, type, op, op2) \ |
| void NAME(FloatRegister Vn, FloatRegister Vm) { \ |
| float_compare(op31, type, op, op2, Vn, Vm); \ |
| } |
| |
| #define INSN1(NAME, op31, type, op, op2) \ |
| void NAME(FloatRegister Vn, double d) { \ |
| assert_cond(d == 0.0); \ |
| float_compare(op31, type, op, op2, Vn); \ |
| } |
| |
| INSN(fcmps, 0b000, 0b00, 0b00, 0b00000); |
| INSN1(fcmps, 0b000, 0b00, 0b00, 0b01000); |
| // INSN(fcmpes, 0b000, 0b00, 0b00, 0b10000); |
| // INSN1(fcmpes, 0b000, 0b00, 0b00, 0b11000); |
| |
| INSN(fcmpd, 0b000, 0b01, 0b00, 0b00000); |
| INSN1(fcmpd, 0b000, 0b01, 0b00, 0b01000); |
| // INSN(fcmped, 0b000, 0b01, 0b00, 0b10000); |
| // INSN1(fcmped, 0b000, 0b01, 0b00, 0b11000); |
| |
| #undef INSN |
| #undef INSN1 |
| |
| // Floating-point Move (immediate) |
| private: |
| unsigned pack(double value); |
| |
| void fmov_imm(FloatRegister Vn, double value, unsigned size) { |
| starti; |
| f(0b00011110, 31, 24), f(size, 23, 22), f(1, 21); |
| f(pack(value), 20, 13), f(0b10000000, 12, 5); |
| rf(Vn, 0); |
| } |
| |
| public: |
| |
| void fmovs(FloatRegister Vn, double value) { |
| if (value) |
| fmov_imm(Vn, value, 0b00); |
| else |
| fmovs(Vn, zr); |
| } |
| void fmovd(FloatRegister Vn, double value) { |
| if (value) |
| fmov_imm(Vn, value, 0b01); |
| else |
| fmovd(Vn, zr); |
| } |
| |
| /* SIMD extensions |
| * |
| * We just use FloatRegister in the following. They are exactly the same |
| * as SIMD registers. |
| */ |
| public: |
| |
| enum SIMD_Arrangement { |
| T8B, T16B, T4H, T8H, T2S, T4S, T1D, T2D, T1Q |
| }; |
| |
| enum SIMD_RegVariant { |
| B, H, S, D, Q |
| }; |
| |
| #define INSN(NAME, op) \ |
| void NAME(FloatRegister Rt, SIMD_RegVariant T, const Address &adr) { \ |
| ld_st2((Register)Rt, adr, (int)T & 3, op + ((T==Q) ? 0b10:0b00), 1); \ |
| } \ |
| |
| INSN(ldr, 1); |
| INSN(str, 0); |
| |
| #undef INSN |
| |
| private: |
| |
| void ld_st(FloatRegister Vt, SIMD_Arrangement T, Register Xn, int op1, int op2) { |
| starti; |
| f(0,31), f((int)T & 1, 30); |
| f(op1, 29, 21), f(0, 20, 16), f(op2, 15, 12); |
| f((int)T >> 1, 11, 10), rf(Xn, 5), rf(Vt, 0); |
| } |
| void ld_st(FloatRegister Vt, SIMD_Arrangement T, Register Xn, |
| int imm, int op1, int op2) { |
| starti; |
| f(0,31), f((int)T & 1, 30); |
| f(op1 | 0b100, 29, 21), f(0b11111, 20, 16), f(op2, 15, 12); |
| f((int)T >> 1, 11, 10), rf(Xn, 5), rf(Vt, 0); |
| } |
| void ld_st(FloatRegister Vt, SIMD_Arrangement T, Register Xn, |
| Register Xm, int op1, int op2) { |
| starti; |
| f(0,31), f((int)T & 1, 30); |
| f(op1 | 0b100, 29, 21), rf(Xm, 16), f(op2, 15, 12); |
| f((int)T >> 1, 11, 10), rf(Xn, 5), rf(Vt, 0); |
| } |
| |
| void ld_st(FloatRegister Vt, SIMD_Arrangement T, Address a, int op1, int op2) { |
| switch (a.getMode()) { |
| case Address::base_plus_offset: |
| guarantee(a.offset() == 0, "no offset allowed here"); |
| ld_st(Vt, T, a.base(), op1, op2); |
| break; |
| case Address::post: |
| ld_st(Vt, T, a.base(), a.offset(), op1, op2); |
| break; |
| case Address::base_plus_offset_reg: |
| ld_st(Vt, T, a.base(), a.index(), op1, op2); |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| } |
| |
| public: |
| |
| #define INSN1(NAME, op1, op2) \ |
| void NAME(FloatRegister Vt, SIMD_Arrangement T, const Address &a) { \ |
| ld_st(Vt, T, a, op1, op2); \ |
| } |
| |
| #define INSN2(NAME, op1, op2) \ |
| void NAME(FloatRegister Vt, FloatRegister Vt2, SIMD_Arrangement T, const Address &a) { \ |
| assert(Vt->successor() == Vt2, "Registers must be ordered"); \ |
| ld_st(Vt, T, a, op1, op2); \ |
| } |
| |
| #define INSN3(NAME, op1, op2) \ |
| void NAME(FloatRegister Vt, FloatRegister Vt2, FloatRegister Vt3, \ |
| SIMD_Arrangement T, const Address &a) { \ |
| assert(Vt->successor() == Vt2 && Vt2->successor() == Vt3, \ |
| "Registers must be ordered"); \ |
| ld_st(Vt, T, a, op1, op2); \ |
| } |
| |
| #define INSN4(NAME, op1, op2) \ |
| void NAME(FloatRegister Vt, FloatRegister Vt2, FloatRegister Vt3, \ |
| FloatRegister Vt4, SIMD_Arrangement T, const Address &a) { \ |
| assert(Vt->successor() == Vt2 && Vt2->successor() == Vt3 && \ |
| Vt3->successor() == Vt4, "Registers must be ordered"); \ |
| ld_st(Vt, T, a, op1, op2); \ |
| } |
| |
| INSN1(ld1, 0b001100010, 0b0111); |
| INSN2(ld1, 0b001100010, 0b1010); |
| INSN3(ld1, 0b001100010, 0b0110); |
| INSN4(ld1, 0b001100010, 0b0010); |
| |
| INSN2(ld2, 0b001100010, 0b1000); |
| INSN3(ld3, 0b001100010, 0b0100); |
| INSN4(ld4, 0b001100010, 0b0000); |
| |
| INSN1(st1, 0b001100000, 0b0111); |
| INSN2(st1, 0b001100000, 0b1010); |
| INSN3(st1, 0b001100000, 0b0110); |
| INSN4(st1, 0b001100000, 0b0010); |
| |
| INSN2(st2, 0b001100000, 0b1000); |
| INSN3(st3, 0b001100000, 0b0100); |
| INSN4(st4, 0b001100000, 0b0000); |
| |
| INSN1(ld1r, 0b001101010, 0b1100); |
| INSN2(ld2r, 0b001101011, 0b1100); |
| INSN3(ld3r, 0b001101010, 0b1110); |
| INSN4(ld4r, 0b001101011, 0b1110); |
| |
| #undef INSN1 |
| #undef INSN2 |
| #undef INSN3 |
| #undef INSN4 |
| |
| #define INSN(NAME, opc) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ |
| starti; \ |
| assert(T == T8B || T == T16B, "must be T8B or T16B"); \ |
| f(0, 31), f((int)T & 1, 30), f(opc, 29, 21); \ |
| rf(Vm, 16), f(0b000111, 15, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(eor, 0b101110001); |
| INSN(orr, 0b001110101); |
| INSN(andr, 0b001110001); |
| INSN(bic, 0b001110011); |
| INSN(bif, 0b101110111); |
| INSN(bit, 0b101110101); |
| INSN(bsl, 0b101110011); |
| INSN(orn, 0b001110111); |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc, opc2) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ |
| starti; \ |
| f(0, 31), f((int)T & 1, 30), f(opc, 29), f(0b01110, 28, 24); \ |
| f((int)T >> 1, 23, 22), f(1, 21), rf(Vm, 16), f(opc2, 15, 10); \ |
| rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(addv, 0, 0b100001); |
| INSN(subv, 1, 0b100001); |
| INSN(mulv, 0, 0b100111); |
| INSN(mlav, 0, 0b100101); |
| INSN(mlsv, 1, 0b100101); |
| INSN(sshl, 0, 0b010001); |
| INSN(ushl, 1, 0b010001); |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc, opc2) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn) { \ |
| starti; \ |
| f(0, 31), f((int)T & 1, 30), f(opc, 29), f(0b01110, 28, 24); \ |
| f((int)T >> 1, 23, 22), f(opc2, 21, 10); \ |
| rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(absr, 0, 0b100000101110); |
| INSN(negr, 1, 0b100000101110); |
| INSN(notr, 1, 0b100000010110); |
| INSN(addv, 0, 0b110001101110); |
| INSN(cls, 0, 0b100000010010); |
| INSN(clz, 1, 0b100000010010); |
| INSN(cnt, 0, 0b100000010110); |
| |
| #undef INSN |
| |
| #define INSN(NAME, op0, cmode0) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, unsigned imm8, unsigned lsl = 0) { \ |
| unsigned cmode = cmode0; \ |
| unsigned op = op0; \ |
| starti; \ |
| assert(lsl == 0 || \ |
| ((T == T4H || T == T8H) && lsl == 8) || \ |
| ((T == T2S || T == T4S) && ((lsl >> 3) < 4)), "invalid shift"); \ |
| cmode |= lsl >> 2; \ |
| if (T == T4H || T == T8H) cmode |= 0b1000; \ |
| if (!(T == T4H || T == T8H || T == T2S || T == T4S)) { \ |
| assert(op == 0 && cmode0 == 0, "must be MOVI"); \ |
| cmode = 0b1110; \ |
| if (T == T1D || T == T2D) op = 1; \ |
| } \ |
| f(0, 31), f((int)T & 1, 30), f(op, 29), f(0b0111100000, 28, 19); \ |
| f(imm8 >> 5, 18, 16), f(cmode, 15, 12), f(0x01, 11, 10), f(imm8 & 0b11111, 9, 5); \ |
| rf(Vd, 0); \ |
| } |
| |
| INSN(movi, 0, 0); |
| INSN(orri, 0, 1); |
| INSN(mvni, 1, 0); |
| INSN(bici, 1, 1); |
| |
| #undef INSN |
| |
| #define INSN(NAME, op1, op2, op3) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ |
| starti; \ |
| assert(T == T2S || T == T4S || T == T2D, "invalid arrangement"); \ |
| f(0, 31), f((int)T & 1, 30), f(op1, 29), f(0b01110, 28, 24), f(op2, 23); \ |
| f(T==T2D ? 1:0, 22); f(1, 21), rf(Vm, 16), f(op3, 15, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(fadd, 0, 0, 0b110101); |
| INSN(fdiv, 1, 0, 0b111111); |
| INSN(fmul, 1, 0, 0b110111); |
| INSN(fsub, 0, 1, 0b110101); |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm) { \ |
| starti; \ |
| assert(T == T4S, "arrangement must be T4S"); \ |
| f(0b01011110000, 31, 21), rf(Vm, 16), f(opc, 15, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(sha1c, 0b000000); |
| INSN(sha1m, 0b001000); |
| INSN(sha1p, 0b000100); |
| INSN(sha1su0, 0b001100); |
| INSN(sha256h2, 0b010100); |
| INSN(sha256h, 0b010000); |
| INSN(sha256su1, 0b011000); |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn) { \ |
| starti; \ |
| assert(T == T4S, "arrangement must be T4S"); \ |
| f(0b0101111000101000, 31, 16), f(opc, 15, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(sha1h, 0b000010); |
| INSN(sha1su1, 0b000110); |
| INSN(sha256su0, 0b001010); |
| |
| #undef INSN |
| |
| #define INSN(NAME, opc) \ |
| void NAME(FloatRegister Vd, FloatRegister Vn) { \ |
| starti; \ |
| f(opc, 31, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(aese, 0b0100111000101000010010); |
| INSN(aesd, 0b0100111000101000010110); |
| INSN(aesmc, 0b0100111000101000011010); |
| INSN(aesimc, 0b0100111000101000011110); |
| |
| #undef INSN |
| |
| void ins(FloatRegister Vd, SIMD_RegVariant T, FloatRegister Vn, int didx, int sidx) { |
| starti; |
| assert(T != Q, "invalid register variant"); |
| f(0b01101110000, 31, 21), f(((didx<<1)|1)<<(int)T, 20, 16), f(0, 15); |
| f(sidx<<(int)T, 14, 11), f(1, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| void umov(Register Rd, FloatRegister Vn, SIMD_RegVariant T, int idx) { |
| starti; |
| f(0, 31), f(T==D ? 1:0, 30), f(0b001110000, 29, 21); |
| f(((idx<<1)|1)<<(int)T, 20, 16), f(0b001111, 15, 10); |
| rf(Vn, 5), rf(Rd, 0); |
| } |
| |
| #define INSN(NAME, opc, opc2) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, int shift){ \ |
| starti; \ |
| /* The encodings for the immh:immb fields (bits 22:16) are \ |
| * 0001 xxx 8B/16B, shift = xxx \ |
| * 001x xxx 4H/8H, shift = xxxx \ |
| * 01xx xxx 2S/4S, shift = xxxxx \ |
| * 1xxx xxx 1D/2D, shift = xxxxxx (1D is RESERVED) \ |
| */ \ |
| assert((1 << ((T>>1)+3)) > shift, "Invalid Shift value"); \ |
| f(0, 31), f(T & 1, 30), f(opc, 29), f(0b011110, 28, 23), \ |
| f((1 << ((T>>1)+3))|shift, 22, 16); f(opc2, 15, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(shl, 0, 0b010101); |
| INSN(sshr, 0, 0b000001); |
| INSN(ushr, 1, 0b000001); |
| |
| #undef INSN |
| |
| void ushll(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, SIMD_Arrangement Tb, int shift) { |
| starti; |
| /* The encodings for the immh:immb fields (bits 22:16) are |
| * 0001 xxx 8H, 8B/16b shift = xxx |
| * 001x xxx 4S, 4H/8H shift = xxxx |
| * 01xx xxx 2D, 2S/4S shift = xxxxx |
| * 1xxx xxx RESERVED |
| */ |
| assert((Tb >> 1) + 1 == (Ta >> 1), "Incompatible arrangement"); |
| assert((1 << ((Tb>>1)+3)) > shift, "Invalid shift value"); |
| f(0, 31), f(Tb & 1, 30), f(0b1011110, 29, 23), f((1 << ((Tb>>1)+3))|shift, 22, 16); |
| f(0b101001, 15, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| void ushll2(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, SIMD_Arrangement Tb, int shift) { |
| ushll(Vd, Ta, Vn, Tb, shift); |
| } |
| |
| void uzp1(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement T, int op = 0){ |
| starti; |
| f(0, 31), f((T & 0x1), 30), f(0b001110, 29, 24), f((T >> 1), 23, 22), f(0, 21); |
| rf(Vm, 16), f(0, 15), f(op, 14), f(0b0110, 13, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| void uzp2(FloatRegister Vd, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement T){ |
| uzp1(Vd, Vn, Vm, T, 1); |
| } |
| |
| // Move from general purpose register |
| // mov Vd.T[index], Rn |
| void mov(FloatRegister Vd, SIMD_Arrangement T, int index, Register Xn) { |
| starti; |
| f(0b01001110000, 31, 21), f(((1 << (T >> 1)) | (index << ((T >> 1) + 1))), 20, 16); |
| f(0b000111, 15, 10), rf(Xn, 5), rf(Vd, 0); |
| } |
| |
| // Move to general purpose register |
| // mov Rd, Vn.T[index] |
| void mov(Register Xd, FloatRegister Vn, SIMD_Arrangement T, int index) { |
| starti; |
| f(0, 31), f((T >= T1D) ? 1:0, 30), f(0b001110000, 29, 21); |
| f(((1 << (T >> 1)) | (index << ((T >> 1) + 1))), 20, 16); |
| f(0b001111, 15, 10), rf(Vn, 5), rf(Xd, 0); |
| } |
| |
| void pmull(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement Tb) { |
| starti; |
| assert((Ta == T1Q && (Tb == T1D || Tb == T2D)) || |
| (Ta == T8H && (Tb == T8B || Tb == T16B)), "Invalid Size specifier"); |
| int size = (Ta == T1Q) ? 0b11 : 0b00; |
| f(0, 31), f(Tb & 1, 30), f(0b001110, 29, 24), f(size, 23, 22); |
| f(1, 21), rf(Vm, 16), f(0b111000, 15, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| void pmull2(FloatRegister Vd, SIMD_Arrangement Ta, FloatRegister Vn, FloatRegister Vm, SIMD_Arrangement Tb) { |
| assert(Tb == T2D || Tb == T16B, "pmull2 assumes T2D or T16B as the second size specifier"); |
| pmull(Vd, Ta, Vn, Vm, Tb); |
| } |
| |
| void uqxtn(FloatRegister Vd, SIMD_Arrangement Tb, FloatRegister Vn, SIMD_Arrangement Ta) { |
| starti; |
| int size_b = (int)Tb >> 1; |
| int size_a = (int)Ta >> 1; |
| assert(size_b < 3 && size_b == size_a - 1, "Invalid size specifier"); |
| f(0, 31), f(Tb & 1, 30), f(0b101110, 29, 24), f(size_b, 23, 22); |
| f(0b100001010010, 21, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| void dup(FloatRegister Vd, SIMD_Arrangement T, Register Xs) |
| { |
| starti; |
| assert(T != T1D, "reserved encoding"); |
| f(0,31), f((int)T & 1, 30), f(0b001110000, 29, 21); |
| f((1 << (T >> 1)), 20, 16), f(0b000011, 15, 10), rf(Xs, 5), rf(Vd, 0); |
| } |
| |
| void dup(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, int index = 0) |
| { |
| starti; |
| assert(T != T1D, "reserved encoding"); |
| f(0, 31), f((int)T & 1, 30), f(0b001110000, 29, 21); |
| f(((1 << (T >> 1)) | (index << ((T >> 1) + 1))), 20, 16); |
| f(0b000001, 15, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| // CRC32 instructions |
| #define INSN(NAME, c, sf, sz) \ |
| void NAME(Register Rd, Register Rn, Register Rm) { \ |
| starti; \ |
| f(sf, 31), f(0b0011010110, 30, 21), f(0b010, 15, 13), f(c, 12); \ |
| f(sz, 11, 10), rf(Rm, 16), rf(Rn, 5), rf(Rd, 0); \ |
| } |
| |
| INSN(crc32b, 0, 0, 0b00); |
| INSN(crc32h, 0, 0, 0b01); |
| INSN(crc32w, 0, 0, 0b10); |
| INSN(crc32x, 0, 1, 0b11); |
| INSN(crc32cb, 1, 0, 0b00); |
| INSN(crc32ch, 1, 0, 0b01); |
| INSN(crc32cw, 1, 0, 0b10); |
| INSN(crc32cx, 1, 1, 0b11); |
| |
| #undef INSN |
| |
| // Table vector lookup |
| #define INSN(NAME, op) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, unsigned registers, FloatRegister Vm) { \ |
| starti; \ |
| assert(T == T8B || T == T16B, "invalid arrangement"); \ |
| assert(0 < registers && registers <= 4, "invalid number of registers"); \ |
| f(0, 31), f((int)T & 1, 30), f(0b001110000, 29, 21), rf(Vm, 16), f(0, 15); \ |
| f(registers - 1, 14, 13), f(op, 12),f(0b00, 11, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| INSN(tbl, 0); |
| INSN(tbx, 1); |
| |
| #undef INSN |
| |
| // AdvSIMD two-reg misc |
| #define INSN(NAME, U, opcode) \ |
| void NAME(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn) { \ |
| starti; \ |
| assert((ASSERTION), MSG); \ |
| f(0, 31), f((int)T & 1, 30), f(U, 29), f(0b01110, 28, 24); \ |
| f((int)(T >> 1), 23, 22), f(0b10000, 21, 17), f(opcode, 16, 12); \ |
| f(0b10, 11, 10), rf(Vn, 5), rf(Vd, 0); \ |
| } |
| |
| #define MSG "invalid arrangement" |
| |
| #define ASSERTION (T == T2S || T == T4S || T == T2D) |
| INSN(fsqrt, 1, 0b11111); |
| INSN(fabs, 0, 0b01111); |
| INSN(fneg, 1, 0b01111); |
| #undef ASSERTION |
| |
| #define ASSERTION (T == T8B || T == T16B || T == T4H || T == T8H || T == T2S || T == T4S) |
| INSN(rev64, 0, 0b00000); |
| #undef ASSERTION |
| |
| #define ASSERTION (T == T8B || T == T16B || T == T4H || T == T8H) |
| INSN(rev32, 1, 0b00000); |
| private: |
| INSN(_rbit, 1, 0b00101); |
| public: |
| |
| #undef ASSERTION |
| |
| #define ASSERTION (T == T8B || T == T16B) |
| INSN(rev16, 0, 0b00001); |
| // RBIT only allows T8B and T16B but encodes them oddly. Argh... |
| void rbit(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn) { |
| assert((ASSERTION), MSG); |
| _rbit(Vd, SIMD_Arrangement(T & 1 | 0b010), Vn); |
| } |
| #undef ASSERTION |
| |
| #undef MSG |
| |
| #undef INSN |
| |
| void ext(FloatRegister Vd, SIMD_Arrangement T, FloatRegister Vn, FloatRegister Vm, int index) |
| { |
| starti; |
| assert(T == T8B || T == T16B, "invalid arrangement"); |
| assert((T == T8B && index <= 0b0111) || (T == T16B && index <= 0b1111), "Invalid index value"); |
| f(0, 31), f((int)T & 1, 30), f(0b101110000, 29, 21); |
| rf(Vm, 16), f(0, 15), f(index, 14, 11); |
| f(0, 10), rf(Vn, 5), rf(Vd, 0); |
| } |
| |
| /* Simulator extensions to the ISA |
| |
| haltsim |
| |
| takes no arguments, causes the sim to enter a debug break and then |
| return from the simulator run() call with STATUS_HALT? The linking |
| code will call fatal() when it sees STATUS_HALT. |
| |
| blrt Xn, Wm |
| blrt Xn, #gpargs, #fpargs, #type |
| Xn holds the 64 bit x86 branch_address |
| call format is encoded either as immediate data in the call |
| or in register Wm. In the latter case |
| Wm[13..6] = #gpargs, |
| Wm[5..2] = #fpargs, |
| Wm[1,0] = #type |
| |
| calls the x86 code address 'branch_address' supplied in Xn passing |
| arguments taken from the general and floating point registers according |
| to the supplied counts 'gpargs' and 'fpargs'. may return a result in r0 |
| or v0 according to the the return type #type' where |
| |
| address branch_address; |
| uimm4 gpargs; |
| uimm4 fpargs; |
| enum ReturnType type; |
| |
| enum ReturnType |
| { |
| void_ret = 0, |
| int_ret = 1, |
| long_ret = 1, |
| obj_ret = 1, // i.e. same as long |
| float_ret = 2, |
| double_ret = 3 |
| } |
| |
| notify |
| |
| notifies the simulator of a transfer of control. instr[14:0] |
| identifies the type of change of control. |
| |
| 0 ==> initial entry to a method. |
| |
| 1 ==> return into a method from a submethod call. |
| |
| 2 ==> exit out of Java method code. |
| |
| 3 ==> start execution for a new bytecode. |
| |
| in cases 1 and 2 the simulator is expected to use a JVM callback to |
| identify the name of the specific method being executed. in case 4 |
| the simulator is expected to use a JVM callback to identify the |
| bytecode index. |
| |
| Instruction encodings |
| --------------------- |
| |
| These are encoded in the space with instr[28:25] = 00 which is |
| unallocated. Encodings are |
| |
| 10987654321098765432109876543210 |
| PSEUDO_HALT = 0x11100000000000000000000000000000 |
| PSEUDO_BLRT = 0x11000000000000000_______________ |
| PSEUDO_BLRTR = 0x1100000000000000100000__________ |
| PSEUDO_NOTIFY = 0x10100000000000000_______________ |
| |
| instr[31,29] = op1 : 111 ==> HALT, 110 ==> BLRT/BLRTR, 101 ==> NOTIFY |
| |
| for BLRT |
| instr[14,11] = #gpargs, instr[10,7] = #fpargs |
| instr[6,5] = #type, instr[4,0] = Rn |
| for BLRTR |
| instr[9,5] = Rm, instr[4,0] = Rn |
| for NOTIFY |
| instr[14:0] = type : 0 ==> entry, 1 ==> reentry, 2 ==> exit, 3 ==> bcstart |
| */ |
| |
| enum NotifyType { method_entry, method_reentry, method_exit, bytecode_start }; |
| |
| virtual void notify(int type) { |
| if (UseBuiltinSim) { |
| starti; |
| // 109 |
| f(0b101, 31, 29); |
| // 87654321098765 |
| f(0b00000000000000, 28, 15); |
| f(type, 14, 0); |
| } |
| } |
| |
| void blrt(Register Rn, int gpargs, int fpargs, int type) { |
| if (UseBuiltinSim) { |
| starti; |
| f(0b110, 31 ,29); |
| f(0b00, 28, 25); |
| // 4321098765 |
| f(0b0000000000, 24, 15); |
| f(gpargs, 14, 11); |
| f(fpargs, 10, 7); |
| f(type, 6, 5); |
| rf(Rn, 0); |
| } else { |
| blr(Rn); |
| } |
| } |
| |
| void blrt(Register Rn, Register Rm) { |
| if (UseBuiltinSim) { |
| starti; |
| f(0b110, 31 ,29); |
| f(0b00, 28, 25); |
| // 4321098765 |
| f(0b0000000001, 24, 15); |
| // 43210 |
| f(0b00000, 14, 10); |
| rf(Rm, 5); |
| rf(Rn, 0); |
| } else { |
| blr(Rn); |
| } |
| } |
| |
| void haltsim() { |
| starti; |
| f(0b111, 31 ,29); |
| f(0b00, 28, 27); |
| // 654321098765432109876543210 |
| f(0b000000000000000000000000000, 26, 0); |
| } |
| |
| Assembler(CodeBuffer* code) : AbstractAssembler(code) { |
| } |
| |
| virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr, |
| Register tmp, |
| int offset) { |
| ShouldNotCallThis(); |
| return RegisterOrConstant(); |
| } |
| |
| // Stack overflow checking |
| virtual void bang_stack_with_offset(int offset); |
| |
| static bool operand_valid_for_logical_immediate(bool is32, uint64_t imm); |
| static bool operand_valid_for_add_sub_immediate(long imm); |
| static bool operand_valid_for_float_immediate(double imm); |
| |
| void emit_data64(jlong data, relocInfo::relocType rtype, int format = 0); |
| void emit_data64(jlong data, RelocationHolder const& rspec, int format = 0); |
| }; |
| |
| inline Assembler::Membar_mask_bits operator|(Assembler::Membar_mask_bits a, |
| Assembler::Membar_mask_bits b) { |
| return Assembler::Membar_mask_bits(unsigned(a)|unsigned(b)); |
| } |
| |
| Instruction_aarch64::~Instruction_aarch64() { |
| assem->emit(); |
| } |
| |
| #undef starti |
| |
| // Invert a condition |
| inline const Assembler::Condition operator~(const Assembler::Condition cond) { |
| return Assembler::Condition(int(cond) ^ 1); |
| } |
| |
| class BiasedLockingCounters; |
| |
| extern "C" void das(uint64_t start, int len); |
| |
| #endif // CPU_AARCH64_VM_ASSEMBLER_AARCH64_HPP |