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stubGenerator_x86_64_aes.cpp
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stubGenerator_x86_64_aes.cpp
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/*
* Copyright (c) 2019, 2023, Intel Corporation. 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.
*
*/
#include "precompiled.hpp"
#include "asm/assembler.hpp"
#include "asm/assembler.inline.hpp"
#include "runtime/stubRoutines.hpp"
#include "macroAssembler_x86.hpp"
#include "stubGenerator_x86_64.hpp"
#define __ _masm->
#ifdef PRODUCT
#define BLOCK_COMMENT(str) /* nothing */
#else
#define BLOCK_COMMENT(str) __ block_comment(str)
#endif // PRODUCT
#define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
// Constants
const int AESBlockSize = 16;
// Shuffle mask for fixing up 128-bit words consisting of big-endian 32-bit integers.
ATTRIBUTE_ALIGNED(16) static const uint64_t KEY_SHUFFLE_MASK[] = {
0x0405060700010203UL, 0x0C0D0E0F08090A0BUL
};
static address key_shuffle_mask_addr() {
return (address)KEY_SHUFFLE_MASK;
}
// Shuffle mask for big-endian 128-bit integers.
ATTRIBUTE_ALIGNED(64) static const uint64_t COUNTER_SHUFFLE_MASK[] = {
0x08090A0B0C0D0E0FUL, 0x0001020304050607UL,
0x08090A0B0C0D0E0FUL, 0x0001020304050607UL,
0x08090A0B0C0D0E0FUL, 0x0001020304050607UL,
0x08090A0B0C0D0E0FUL, 0x0001020304050607UL,
};
static address counter_shuffle_mask_addr() {
return (address)COUNTER_SHUFFLE_MASK;
}
// This mask is used for incrementing counter value
ATTRIBUTE_ALIGNED(64) static const uint64_t COUNTER_MASK_LINC0[] = {
0x0000000000000000UL, 0x0000000000000000UL,
0x0000000000000001UL, 0x0000000000000000UL,
0x0000000000000002UL, 0x0000000000000000UL,
0x0000000000000003UL, 0x0000000000000000UL,
};
static address counter_mask_linc0_addr() {
return (address)COUNTER_MASK_LINC0;
}
ATTRIBUTE_ALIGNED(16) static const uint64_t COUNTER_MASK_LINC1[] = {
0x0000000000000001UL, 0x0000000000000000UL,
};
static address counter_mask_linc1_addr() {
return (address)COUNTER_MASK_LINC1;
}
ATTRIBUTE_ALIGNED(16) uint64_t COUNTER_MASK_LINC1F[] = {
0x0000000000000000UL, 0x0100000000000000UL,
};
static address counter_mask_linc1f_addr() {
return (address)COUNTER_MASK_LINC1F;
}
ATTRIBUTE_ALIGNED(16) uint64_t COUNTER_MASK_LINC2[] = {
0x0000000000000002UL, 0x0000000000000000UL,
};
static address counter_mask_linc2_addr() {
return (address)COUNTER_MASK_LINC2;
}
ATTRIBUTE_ALIGNED(16) uint64_t COUNTER_MASK_LINC2F[] = {
0x0000000000000000UL, 0x0200000000000000UL,
};
static address counter_mask_linc2f_addr() {
return (address)COUNTER_MASK_LINC2F;
}
ATTRIBUTE_ALIGNED(64) static const uint64_t COUNTER_MASK_LINC4[] = {
0x0000000000000004UL, 0x0000000000000000UL,
0x0000000000000004UL, 0x0000000000000000UL,
0x0000000000000004UL, 0x0000000000000000UL,
0x0000000000000004UL, 0x0000000000000000UL,
};
static address counter_mask_linc4_addr() {
return (address)COUNTER_MASK_LINC4;
}
ATTRIBUTE_ALIGNED(64) static const uint64_t COUNTER_MASK_LINC8[] = {
0x0000000000000008UL, 0x0000000000000000UL,
0x0000000000000008UL, 0x0000000000000000UL,
0x0000000000000008UL, 0x0000000000000000UL,
0x0000000000000008UL, 0x0000000000000000UL,
};
static address counter_mask_linc8_addr() {
return (address)COUNTER_MASK_LINC8;
}
ATTRIBUTE_ALIGNED(64) static const uint64_t COUNTER_MASK_LINC16[] = {
0x0000000000000010UL, 0x0000000000000000UL,
0x0000000000000010UL, 0x0000000000000000UL,
0x0000000000000010UL, 0x0000000000000000UL,
0x0000000000000010UL, 0x0000000000000000UL,
};
static address counter_mask_linc16_addr() {
return (address)COUNTER_MASK_LINC16;
}
ATTRIBUTE_ALIGNED(64) static const uint64_t COUNTER_MASK_LINC32[] = {
0x0000000000000020UL, 0x0000000000000000UL,
0x0000000000000020UL, 0x0000000000000000UL,
0x0000000000000020UL, 0x0000000000000000UL,
0x0000000000000020UL, 0x0000000000000000UL,
};
static address counter_mask_linc32_addr() {
return (address)COUNTER_MASK_LINC32;
}
ATTRIBUTE_ALIGNED(64) uint64_t COUNTER_MASK_ONES[] = {
0x0000000000000000UL, 0x0000000000000001UL,
0x0000000000000000UL, 0x0000000000000001UL,
0x0000000000000000UL, 0x0000000000000001UL,
0x0000000000000000UL, 0x0000000000000001UL,
};
static address counter_mask_ones_addr() {
return (address)COUNTER_MASK_ONES;
}
ATTRIBUTE_ALIGNED(64) static const uint64_t GHASH_POLYNOMIAL_REDUCTION[] = {
0x00000001C2000000UL, 0xC200000000000000UL,
0x00000001C2000000UL, 0xC200000000000000UL,
0x00000001C2000000UL, 0xC200000000000000UL,
0x00000001C2000000UL, 0xC200000000000000UL,
};
static address ghash_polynomial_reduction_addr() {
return (address)GHASH_POLYNOMIAL_REDUCTION;
}
ATTRIBUTE_ALIGNED(16) static const uint64_t GHASH_POLYNOMIAL_TWO_ONE[] = {
0x0000000000000001UL, 0x0000000100000000UL,
};
static address ghash_polynomial_two_one_addr() {
return (address)GHASH_POLYNOMIAL_TWO_ONE;
}
// AES intrinsic stubs
void StubGenerator::generate_aes_stubs() {
if (UseAESIntrinsics) {
StubRoutines::_aescrypt_encryptBlock = generate_aescrypt_encryptBlock();
StubRoutines::_aescrypt_decryptBlock = generate_aescrypt_decryptBlock();
StubRoutines::_cipherBlockChaining_encryptAESCrypt = generate_cipherBlockChaining_encryptAESCrypt();
if (VM_Version::supports_avx512_vaes() && VM_Version::supports_avx512vl() && VM_Version::supports_avx512dq() ) {
StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptVectorAESCrypt();
StubRoutines::_electronicCodeBook_encryptAESCrypt = generate_electronicCodeBook_encryptAESCrypt();
StubRoutines::_electronicCodeBook_decryptAESCrypt = generate_electronicCodeBook_decryptAESCrypt();
StubRoutines::_galoisCounterMode_AESCrypt = generate_galoisCounterMode_AESCrypt();
} else {
StubRoutines::_cipherBlockChaining_decryptAESCrypt = generate_cipherBlockChaining_decryptAESCrypt_Parallel();
if (VM_Version::supports_avx2()) {
StubRoutines::_galoisCounterMode_AESCrypt = generate_avx2_galoisCounterMode_AESCrypt();
}
}
}
if (UseAESCTRIntrinsics) {
if (VM_Version::supports_avx512_vaes() && VM_Version::supports_avx512bw() && VM_Version::supports_avx512vl()) {
StubRoutines::_counterMode_AESCrypt = generate_counterMode_VectorAESCrypt();
} else {
StubRoutines::_counterMode_AESCrypt = generate_counterMode_AESCrypt_Parallel();
}
}
}
// Vector AES Galois Counter Mode implementation.
//
// Inputs: Windows | Linux
// in = rcx (c_rarg0) | rsi (c_rarg0)
// len = rdx (c_rarg1) | rdi (c_rarg1)
// ct = r8 (c_rarg2) | rdx (c_rarg2)
// out = r9 (c_rarg3) | rcx (c_rarg3)
// key = r10 | r8 (c_rarg4)
// state = r13 | r9 (c_rarg5)
// subkeyHtbl = r14 | r11
// counter = rsi | r12
//
// Output:
// rax - number of processed bytes
address StubGenerator::generate_galoisCounterMode_AESCrypt() {
__ align(CodeEntryAlignment);
StubCodeMark mark(this, "StubRoutines", "galoisCounterMode_AESCrypt");
address start = __ pc();
const Register in = c_rarg0;
const Register len = c_rarg1;
const Register ct = c_rarg2;
const Register out = c_rarg3;
// and updated with the incremented counter in the end
#ifndef _WIN64
const Register key = c_rarg4;
const Register state = c_rarg5;
const Address subkeyH_mem(rbp, 2 * wordSize);
const Register subkeyHtbl = r11;
const Register avx512_subkeyHtbl = r13;
const Address counter_mem(rbp, 3 * wordSize);
const Register counter = r12;
#else
const Address key_mem(rbp, 6 * wordSize);
const Register key = r10;
const Address state_mem(rbp, 7 * wordSize);
const Register state = r13;
const Address subkeyH_mem(rbp, 8 * wordSize);
const Register subkeyHtbl = r14;
const Register avx512_subkeyHtbl = r12;
const Address counter_mem(rbp, 9 * wordSize);
const Register counter = rsi;
#endif
__ enter();
// Save state before entering routine
__ push(r12);
__ push(r13);
__ push(r14);
__ push(r15);
__ push(rbx);
#ifdef _WIN64
// on win64, fill len_reg from stack position
__ push(rsi);
__ movptr(key, key_mem);
__ movptr(state, state_mem);
#endif
__ movptr(subkeyHtbl, subkeyH_mem);
__ movptr(counter, counter_mem);
// Save rbp and rsp
__ push(rbp);
__ movq(rbp, rsp);
// Align stack
__ andq(rsp, -64);
__ subptr(rsp, 96 * longSize); // Create space on the stack for htbl entries
__ movptr(avx512_subkeyHtbl, rsp);
aesgcm_encrypt(in, len, ct, out, key, state, subkeyHtbl, avx512_subkeyHtbl, counter);
__ vzeroupper();
__ movq(rsp, rbp);
__ pop(rbp);
// Restore state before leaving routine
#ifdef _WIN64
__ pop(rsi);
#endif
__ pop(rbx);
__ pop(r15);
__ pop(r14);
__ pop(r13);
__ pop(r12);
__ leave(); // required for proper stackwalking of RuntimeStub frame
__ ret(0);
return start;
}
// AVX2 Vector AES Galois Counter Mode implementation.
//
// Inputs: Windows | Linux
// in = rcx (c_rarg0) | rsi (c_rarg0)
// len = rdx (c_rarg1) | rdi (c_rarg1)
// ct = r8 (c_rarg2) | rdx (c_rarg2)
// out = r9 (c_rarg3) | rcx (c_rarg3)
// key = rdi | r8 (c_rarg4)
// state = r13 | r9 (c_rarg5)
// subkeyHtbl = r11 | r11
// counter = rsi | r12
//
// Output:
// rax - number of processed bytes
address StubGenerator::generate_avx2_galoisCounterMode_AESCrypt() {
__ align(CodeEntryAlignment);
StubCodeMark mark(this, "StubRoutines", "galoisCounterMode_AESCrypt");
address start = __ pc();
const Register in = c_rarg0;
const Register len = c_rarg1;
const Register ct = c_rarg2;
const Register out = c_rarg3;
// and updated with the incremented counter in the end
#ifndef _WIN64
const Register key = c_rarg4;
const Register state = c_rarg5;
const Address subkeyH_mem(rbp, 2 * wordSize);
const Register subkeyHtbl = r11;
const Address counter_mem(rbp, 3 * wordSize);
const Register counter = r12;
#else
const Address key_mem(rbp, 6 * wordSize);
const Register key = rdi;
const Address state_mem(rbp, 7 * wordSize);
const Register state = r13;
const Address subkeyH_mem(rbp, 8 * wordSize);
const Register subkeyHtbl = r11;
const Address counter_mem(rbp, 9 * wordSize);
const Register counter = rsi;
#endif
__ enter();
// Save state before entering routine
__ push(r12);
__ push(r13);
__ push(r14);
__ push(r15);
__ push(rbx);
#ifdef _WIN64
// on win64, fill len_reg from stack position
__ push(rsi);
__ push(rdi);
__ movptr(key, key_mem);
__ movptr(state, state_mem);
#endif
__ movptr(subkeyHtbl, subkeyH_mem);
__ movptr(counter, counter_mem);
// Save rsp
__ movq(r14, rsp);
// Align stack
__ andq(rsp, -64);
__ subptr(rsp, 16 * longSize); // Create space on the stack for saving AES entries
aesgcm_avx2(in, len, ct, out, key, state, subkeyHtbl, counter);
__ vzeroupper();
__ movq(rsp, r14);
// Restore state before leaving routine
#ifdef _WIN64
__ pop(rdi);
__ pop(rsi);
#endif
__ pop(rbx);
__ pop(r15);
__ pop(r14);
__ pop(r13);
__ pop(r12);
__ leave(); // required for proper stackwalking of RuntimeStub frame
__ ret(0);
return start;
}
// Vector AES Counter implementation
address StubGenerator::generate_counterMode_VectorAESCrypt() {
__ align(CodeEntryAlignment);
StubCodeMark mark(this, "StubRoutines", "counterMode_AESCrypt");
address start = __ pc();
const Register from = c_rarg0; // source array address
const Register to = c_rarg1; // destination array address
const Register key = c_rarg2; // key array address r8
const Register counter = c_rarg3; // counter byte array initialized from counter array address
// and updated with the incremented counter in the end
#ifndef _WIN64
const Register len_reg = c_rarg4;
const Register saved_encCounter_start = c_rarg5;
const Register used_addr = r10;
const Address used_mem(rbp, 2 * wordSize);
const Register used = r11;
#else
const Address len_mem(rbp, 6 * wordSize); // length is on stack on Win64
const Address saved_encCounter_mem(rbp, 7 * wordSize); // saved encrypted counter is on stack on Win64
const Address used_mem(rbp, 8 * wordSize); // used length is on stack on Win64
const Register len_reg = r10; // pick the first volatile windows register
const Register saved_encCounter_start = r11;
const Register used_addr = r13;
const Register used = r14;
#endif
__ enter();
// Save state before entering routine
__ push(r12);
__ push(r13);
__ push(r14);
__ push(r15);
#ifdef _WIN64
// on win64, fill len_reg from stack position
__ movl(len_reg, len_mem);
__ movptr(saved_encCounter_start, saved_encCounter_mem);
__ movptr(used_addr, used_mem);
__ movl(used, Address(used_addr, 0));
#else
__ push(len_reg); // Save
__ movptr(used_addr, used_mem);
__ movl(used, Address(used_addr, 0));
#endif
__ push(rbx);
aesctr_encrypt(from, to, key, counter, len_reg, used, used_addr, saved_encCounter_start);
__ vzeroupper();
// Restore state before leaving routine
__ pop(rbx);
#ifdef _WIN64
__ movl(rax, len_mem); // return length
#else
__ pop(rax); // return length
#endif
__ pop(r15);
__ pop(r14);
__ pop(r13);
__ pop(r12);
__ leave(); // required for proper stackwalking of RuntimeStub frame
__ ret(0);
return start;
}
// This is a version of CTR/AES crypt which does 6 blocks in a loop at a time
// to hide instruction latency
//
// Arguments:
//
// Inputs:
// c_rarg0 - source byte array address
// c_rarg1 - destination byte array address
// c_rarg2 - K (key) in little endian int array
// c_rarg3 - counter vector byte array address
// Linux
// c_rarg4 - input length
// c_rarg5 - saved encryptedCounter start
// rbp + 6 * wordSize - saved used length
// Windows
// rbp + 6 * wordSize - input length
// rbp + 7 * wordSize - saved encryptedCounter start
// rbp + 8 * wordSize - saved used length
//
// Output:
// rax - input length
//
address StubGenerator::generate_counterMode_AESCrypt_Parallel() {
assert(UseAES, "need AES instructions and misaligned SSE support");
__ align(CodeEntryAlignment);
StubCodeMark mark(this, "StubRoutines", "counterMode_AESCrypt");
address start = __ pc();
const Register from = c_rarg0; // source array address
const Register to = c_rarg1; // destination array address
const Register key = c_rarg2; // key array address
const Register counter = c_rarg3; // counter byte array initialized from counter array address
// and updated with the incremented counter in the end
#ifndef _WIN64
const Register len_reg = c_rarg4;
const Register saved_encCounter_start = c_rarg5;
const Register used_addr = r10;
const Address used_mem(rbp, 2 * wordSize);
const Register used = r11;
#else
const Address len_mem(rbp, 6 * wordSize); // length is on stack on Win64
const Address saved_encCounter_mem(rbp, 7 * wordSize); // length is on stack on Win64
const Address used_mem(rbp, 8 * wordSize); // length is on stack on Win64
const Register len_reg = r10; // pick the first volatile windows register
const Register saved_encCounter_start = r11;
const Register used_addr = r13;
const Register used = r14;
#endif
const Register pos = rax;
const int PARALLEL_FACTOR = 6;
const XMMRegister xmm_counter_shuf_mask = xmm0;
const XMMRegister xmm_key_shuf_mask = xmm1; // used temporarily to swap key bytes up front
const XMMRegister xmm_curr_counter = xmm2;
const XMMRegister xmm_key_tmp0 = xmm3;
const XMMRegister xmm_key_tmp1 = xmm4;
// registers holding the four results in the parallelized loop
const XMMRegister xmm_result0 = xmm5;
const XMMRegister xmm_result1 = xmm6;
const XMMRegister xmm_result2 = xmm7;
const XMMRegister xmm_result3 = xmm8;
const XMMRegister xmm_result4 = xmm9;
const XMMRegister xmm_result5 = xmm10;
const XMMRegister xmm_from0 = xmm11;
const XMMRegister xmm_from1 = xmm12;
const XMMRegister xmm_from2 = xmm13;
const XMMRegister xmm_from3 = xmm14; //the last one is xmm14. we have to preserve it on WIN64.
const XMMRegister xmm_from4 = xmm3; //reuse xmm3~4. Because xmm_key_tmp0~1 are useless when loading input text
const XMMRegister xmm_from5 = xmm4;
//for key_128, key_192, key_256
const int rounds[3] = {10, 12, 14};
Label L_exit_preLoop, L_preLoop_start;
Label L_multiBlock_loopTop[3];
Label L_singleBlockLoopTop[3];
Label L__incCounter[3][6]; //for 6 blocks
Label L__incCounter_single[3]; //for single block, key128, key192, key256
Label L_processTail_insr[3], L_processTail_4_insr[3], L_processTail_2_insr[3], L_processTail_1_insr[3], L_processTail_exit_insr[3];
Label L_processTail_4_extr[3], L_processTail_2_extr[3], L_processTail_1_extr[3], L_processTail_exit_extr[3];
Label L_exit;
__ enter(); // required for proper stackwalking of RuntimeStub frame
#ifdef _WIN64
// allocate spill slots for r13, r14
enum {
saved_r13_offset,
saved_r14_offset
};
__ subptr(rsp, 2 * wordSize);
__ movptr(Address(rsp, saved_r13_offset * wordSize), r13);
__ movptr(Address(rsp, saved_r14_offset * wordSize), r14);
// on win64, fill len_reg from stack position
__ movl(len_reg, len_mem);
__ movptr(saved_encCounter_start, saved_encCounter_mem);
__ movptr(used_addr, used_mem);
__ movl(used, Address(used_addr, 0));
#else
__ push(len_reg); // Save
__ movptr(used_addr, used_mem);
__ movl(used, Address(used_addr, 0));
#endif
__ push(rbx); // Save RBX
__ movdqu(xmm_curr_counter, Address(counter, 0x00)); // initialize counter with initial counter
__ movdqu(xmm_counter_shuf_mask, ExternalAddress(counter_shuffle_mask_addr()), pos /*rscratch*/);
__ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled
__ movptr(pos, 0);
// Use the partially used encrpyted counter from last invocation
__ BIND(L_preLoop_start);
__ cmpptr(used, 16);
__ jcc(Assembler::aboveEqual, L_exit_preLoop);
__ cmpptr(len_reg, 0);
__ jcc(Assembler::lessEqual, L_exit_preLoop);
__ movb(rbx, Address(saved_encCounter_start, used));
__ xorb(rbx, Address(from, pos));
__ movb(Address(to, pos), rbx);
__ addptr(pos, 1);
__ addptr(used, 1);
__ subptr(len_reg, 1);
__ jmp(L_preLoop_start);
__ BIND(L_exit_preLoop);
__ movl(Address(used_addr, 0), used);
// key length could be only {11, 13, 15} * 4 = {44, 52, 60}
__ movdqu(xmm_key_shuf_mask, ExternalAddress(key_shuffle_mask_addr()), rbx /*rscratch*/);
__ movl(rbx, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
__ cmpl(rbx, 52);
__ jcc(Assembler::equal, L_multiBlock_loopTop[1]);
__ cmpl(rbx, 60);
__ jcc(Assembler::equal, L_multiBlock_loopTop[2]);
#define CTR_DoSix(opc, src_reg) \
__ opc(xmm_result0, src_reg); \
__ opc(xmm_result1, src_reg); \
__ opc(xmm_result2, src_reg); \
__ opc(xmm_result3, src_reg); \
__ opc(xmm_result4, src_reg); \
__ opc(xmm_result5, src_reg);
// k == 0 : generate code for key_128
// k == 1 : generate code for key_192
// k == 2 : generate code for key_256
for (int k = 0; k < 3; ++k) {
//multi blocks starts here
__ align(OptoLoopAlignment);
__ BIND(L_multiBlock_loopTop[k]);
__ cmpptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // see if at least PARALLEL_FACTOR blocks left
__ jcc(Assembler::less, L_singleBlockLoopTop[k]);
load_key(xmm_key_tmp0, key, 0x00, xmm_key_shuf_mask);
//load, then increase counters
CTR_DoSix(movdqa, xmm_curr_counter);
inc_counter(rbx, xmm_result1, 0x01, L__incCounter[k][0]);
inc_counter(rbx, xmm_result2, 0x02, L__incCounter[k][1]);
inc_counter(rbx, xmm_result3, 0x03, L__incCounter[k][2]);
inc_counter(rbx, xmm_result4, 0x04, L__incCounter[k][3]);
inc_counter(rbx, xmm_result5, 0x05, L__incCounter[k][4]);
inc_counter(rbx, xmm_curr_counter, 0x06, L__incCounter[k][5]);
CTR_DoSix(pshufb, xmm_counter_shuf_mask); // after increased, shuffled counters back for PXOR
CTR_DoSix(pxor, xmm_key_tmp0); //PXOR with Round 0 key
//load two ROUND_KEYs at a time
for (int i = 1; i < rounds[k]; ) {
load_key(xmm_key_tmp1, key, (0x10 * i), xmm_key_shuf_mask);
load_key(xmm_key_tmp0, key, (0x10 * (i+1)), xmm_key_shuf_mask);
CTR_DoSix(aesenc, xmm_key_tmp1);
i++;
if (i != rounds[k]) {
CTR_DoSix(aesenc, xmm_key_tmp0);
} else {
CTR_DoSix(aesenclast, xmm_key_tmp0);
}
i++;
}
// get next PARALLEL_FACTOR blocks into xmm_result registers
__ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize));
__ movdqu(xmm_from1, Address(from, pos, Address::times_1, 1 * AESBlockSize));
__ movdqu(xmm_from2, Address(from, pos, Address::times_1, 2 * AESBlockSize));
__ movdqu(xmm_from3, Address(from, pos, Address::times_1, 3 * AESBlockSize));
__ movdqu(xmm_from4, Address(from, pos, Address::times_1, 4 * AESBlockSize));
__ movdqu(xmm_from5, Address(from, pos, Address::times_1, 5 * AESBlockSize));
__ pxor(xmm_result0, xmm_from0);
__ pxor(xmm_result1, xmm_from1);
__ pxor(xmm_result2, xmm_from2);
__ pxor(xmm_result3, xmm_from3);
__ pxor(xmm_result4, xmm_from4);
__ pxor(xmm_result5, xmm_from5);
// store 6 results into the next 64 bytes of output
__ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);
__ movdqu(Address(to, pos, Address::times_1, 1 * AESBlockSize), xmm_result1);
__ movdqu(Address(to, pos, Address::times_1, 2 * AESBlockSize), xmm_result2);
__ movdqu(Address(to, pos, Address::times_1, 3 * AESBlockSize), xmm_result3);
__ movdqu(Address(to, pos, Address::times_1, 4 * AESBlockSize), xmm_result4);
__ movdqu(Address(to, pos, Address::times_1, 5 * AESBlockSize), xmm_result5);
__ addptr(pos, PARALLEL_FACTOR * AESBlockSize); // increase the length of crypt text
__ subptr(len_reg, PARALLEL_FACTOR * AESBlockSize); // decrease the remaining length
__ jmp(L_multiBlock_loopTop[k]);
// singleBlock starts here
__ align(OptoLoopAlignment);
__ BIND(L_singleBlockLoopTop[k]);
__ cmpptr(len_reg, 0);
__ jcc(Assembler::lessEqual, L_exit);
load_key(xmm_key_tmp0, key, 0x00, xmm_key_shuf_mask);
__ movdqa(xmm_result0, xmm_curr_counter);
inc_counter(rbx, xmm_curr_counter, 0x01, L__incCounter_single[k]);
__ pshufb(xmm_result0, xmm_counter_shuf_mask);
__ pxor(xmm_result0, xmm_key_tmp0);
for (int i = 1; i < rounds[k]; i++) {
load_key(xmm_key_tmp0, key, (0x10 * i), xmm_key_shuf_mask);
__ aesenc(xmm_result0, xmm_key_tmp0);
}
load_key(xmm_key_tmp0, key, (rounds[k] * 0x10), xmm_key_shuf_mask);
__ aesenclast(xmm_result0, xmm_key_tmp0);
__ cmpptr(len_reg, AESBlockSize);
__ jcc(Assembler::less, L_processTail_insr[k]);
__ movdqu(xmm_from0, Address(from, pos, Address::times_1, 0 * AESBlockSize));
__ pxor(xmm_result0, xmm_from0);
__ movdqu(Address(to, pos, Address::times_1, 0 * AESBlockSize), xmm_result0);
__ addptr(pos, AESBlockSize);
__ subptr(len_reg, AESBlockSize);
__ jmp(L_singleBlockLoopTop[k]);
__ BIND(L_processTail_insr[k]); // Process the tail part of the input array
__ addptr(pos, len_reg); // 1. Insert bytes from src array into xmm_from0 register
__ testptr(len_reg, 8);
__ jcc(Assembler::zero, L_processTail_4_insr[k]);
__ subptr(pos,8);
__ pinsrq(xmm_from0, Address(from, pos), 0);
__ BIND(L_processTail_4_insr[k]);
__ testptr(len_reg, 4);
__ jcc(Assembler::zero, L_processTail_2_insr[k]);
__ subptr(pos,4);
__ pslldq(xmm_from0, 4);
__ pinsrd(xmm_from0, Address(from, pos), 0);
__ BIND(L_processTail_2_insr[k]);
__ testptr(len_reg, 2);
__ jcc(Assembler::zero, L_processTail_1_insr[k]);
__ subptr(pos, 2);
__ pslldq(xmm_from0, 2);
__ pinsrw(xmm_from0, Address(from, pos), 0);
__ BIND(L_processTail_1_insr[k]);
__ testptr(len_reg, 1);
__ jcc(Assembler::zero, L_processTail_exit_insr[k]);
__ subptr(pos, 1);
__ pslldq(xmm_from0, 1);
__ pinsrb(xmm_from0, Address(from, pos), 0);
__ BIND(L_processTail_exit_insr[k]);
__ movdqu(Address(saved_encCounter_start, 0), xmm_result0); // 2. Perform pxor of the encrypted counter and plaintext Bytes.
__ pxor(xmm_result0, xmm_from0); // Also the encrypted counter is saved for next invocation.
__ testptr(len_reg, 8);
__ jcc(Assembler::zero, L_processTail_4_extr[k]); // 3. Extract bytes from xmm_result0 into the dest. array
__ pextrq(Address(to, pos), xmm_result0, 0);
__ psrldq(xmm_result0, 8);
__ addptr(pos, 8);
__ BIND(L_processTail_4_extr[k]);
__ testptr(len_reg, 4);
__ jcc(Assembler::zero, L_processTail_2_extr[k]);
__ pextrd(Address(to, pos), xmm_result0, 0);
__ psrldq(xmm_result0, 4);
__ addptr(pos, 4);
__ BIND(L_processTail_2_extr[k]);
__ testptr(len_reg, 2);
__ jcc(Assembler::zero, L_processTail_1_extr[k]);
__ pextrw(Address(to, pos), xmm_result0, 0);
__ psrldq(xmm_result0, 2);
__ addptr(pos, 2);
__ BIND(L_processTail_1_extr[k]);
__ testptr(len_reg, 1);
__ jcc(Assembler::zero, L_processTail_exit_extr[k]);
__ pextrb(Address(to, pos), xmm_result0, 0);
__ BIND(L_processTail_exit_extr[k]);
__ movl(Address(used_addr, 0), len_reg);
__ jmp(L_exit);
}
__ BIND(L_exit);
__ pshufb(xmm_curr_counter, xmm_counter_shuf_mask); //counter is shuffled back.
__ movdqu(Address(counter, 0), xmm_curr_counter); //save counter back
__ pop(rbx); // pop the saved RBX.
#ifdef _WIN64
__ movl(rax, len_mem);
__ movptr(r13, Address(rsp, saved_r13_offset * wordSize));
__ movptr(r14, Address(rsp, saved_r14_offset * wordSize));
__ addptr(rsp, 2 * wordSize);
#else
__ pop(rax); // return 'len'
#endif
__ leave(); // required for proper stackwalking of RuntimeStub frame
__ ret(0);
return start;
}
address StubGenerator::generate_cipherBlockChaining_decryptVectorAESCrypt() {
assert(VM_Version::supports_avx512_vaes(), "need AES instructions and misaligned SSE support");
__ align(CodeEntryAlignment);
StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt");
address start = __ pc();
const Register from = c_rarg0; // source array address
const Register to = c_rarg1; // destination array address
const Register key = c_rarg2; // key array address
const Register rvec = c_rarg3; // r byte array initialized from initvector array address
// and left with the results of the last encryption block
#ifndef _WIN64
const Register len_reg = c_rarg4; // src len (must be multiple of blocksize 16)
#else
const Address len_mem(rbp, 6 * wordSize); // length is on stack on Win64
const Register len_reg = r11; // pick the volatile windows register
#endif
Label Loop, Loop1, L_128, L_256, L_192, KEY_192, KEY_256, Loop2, Lcbc_dec_rem_loop,
Lcbc_dec_rem_last, Lcbc_dec_ret, Lcbc_dec_rem, Lcbc_exit;
__ enter();
#ifdef _WIN64
// on win64, fill len_reg from stack position
__ movl(len_reg, len_mem);
#else
__ push(len_reg); // Save
#endif
__ push(rbx);
__ vzeroupper();
// Temporary variable declaration for swapping key bytes
const XMMRegister xmm_key_shuf_mask = xmm1;
__ movdqu(xmm_key_shuf_mask, ExternalAddress(key_shuffle_mask_addr()), rbx /*rscratch*/);
// Calculate number of rounds from key size: 44 for 10-rounds, 52 for 12-rounds, 60 for 14-rounds
const Register rounds = rbx;
__ movl(rounds, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT)));
const XMMRegister IV = xmm0;
// Load IV and broadcast value to 512-bits
__ evbroadcasti64x2(IV, Address(rvec, 0), Assembler::AVX_512bit);
// Temporary variables for storing round keys
const XMMRegister RK0 = xmm30;
const XMMRegister RK1 = xmm9;
const XMMRegister RK2 = xmm18;
const XMMRegister RK3 = xmm19;
const XMMRegister RK4 = xmm20;
const XMMRegister RK5 = xmm21;
const XMMRegister RK6 = xmm22;
const XMMRegister RK7 = xmm23;
const XMMRegister RK8 = xmm24;
const XMMRegister RK9 = xmm25;
const XMMRegister RK10 = xmm26;
// Load and shuffle key
// the java expanded key ordering is rotated one position from what we want
// so we start from 1*16 here and hit 0*16 last
ev_load_key(RK1, key, 1 * 16, xmm_key_shuf_mask);
ev_load_key(RK2, key, 2 * 16, xmm_key_shuf_mask);
ev_load_key(RK3, key, 3 * 16, xmm_key_shuf_mask);
ev_load_key(RK4, key, 4 * 16, xmm_key_shuf_mask);
ev_load_key(RK5, key, 5 * 16, xmm_key_shuf_mask);
ev_load_key(RK6, key, 6 * 16, xmm_key_shuf_mask);
ev_load_key(RK7, key, 7 * 16, xmm_key_shuf_mask);
ev_load_key(RK8, key, 8 * 16, xmm_key_shuf_mask);
ev_load_key(RK9, key, 9 * 16, xmm_key_shuf_mask);
ev_load_key(RK10, key, 10 * 16, xmm_key_shuf_mask);
ev_load_key(RK0, key, 0*16, xmm_key_shuf_mask);
// Variables for storing source cipher text
const XMMRegister S0 = xmm10;
const XMMRegister S1 = xmm11;
const XMMRegister S2 = xmm12;
const XMMRegister S3 = xmm13;
const XMMRegister S4 = xmm14;
const XMMRegister S5 = xmm15;
const XMMRegister S6 = xmm16;
const XMMRegister S7 = xmm17;
// Variables for storing decrypted text
const XMMRegister B0 = xmm1;
const XMMRegister B1 = xmm2;
const XMMRegister B2 = xmm3;
const XMMRegister B3 = xmm4;
const XMMRegister B4 = xmm5;
const XMMRegister B5 = xmm6;
const XMMRegister B6 = xmm7;
const XMMRegister B7 = xmm8;
__ cmpl(rounds, 44);
__ jcc(Assembler::greater, KEY_192);
__ jmp(Loop);
__ BIND(KEY_192);
const XMMRegister RK11 = xmm27;
const XMMRegister RK12 = xmm28;
ev_load_key(RK11, key, 11*16, xmm_key_shuf_mask);
ev_load_key(RK12, key, 12*16, xmm_key_shuf_mask);
__ cmpl(rounds, 52);
__ jcc(Assembler::greater, KEY_256);
__ jmp(Loop);
__ BIND(KEY_256);
const XMMRegister RK13 = xmm29;
const XMMRegister RK14 = xmm31;
ev_load_key(RK13, key, 13*16, xmm_key_shuf_mask);
ev_load_key(RK14, key, 14*16, xmm_key_shuf_mask);
__ BIND(Loop);
__ cmpl(len_reg, 512);
__ jcc(Assembler::below, Lcbc_dec_rem);
__ BIND(Loop1);
__ subl(len_reg, 512);
__ evmovdquq(S0, Address(from, 0 * 64), Assembler::AVX_512bit);
__ evmovdquq(S1, Address(from, 1 * 64), Assembler::AVX_512bit);
__ evmovdquq(S2, Address(from, 2 * 64), Assembler::AVX_512bit);
__ evmovdquq(S3, Address(from, 3 * 64), Assembler::AVX_512bit);
__ evmovdquq(S4, Address(from, 4 * 64), Assembler::AVX_512bit);
__ evmovdquq(S5, Address(from, 5 * 64), Assembler::AVX_512bit);
__ evmovdquq(S6, Address(from, 6 * 64), Assembler::AVX_512bit);
__ evmovdquq(S7, Address(from, 7 * 64), Assembler::AVX_512bit);
__ leaq(from, Address(from, 8 * 64));
__ evpxorq(B0, S0, RK1, Assembler::AVX_512bit);
__ evpxorq(B1, S1, RK1, Assembler::AVX_512bit);
__ evpxorq(B2, S2, RK1, Assembler::AVX_512bit);
__ evpxorq(B3, S3, RK1, Assembler::AVX_512bit);
__ evpxorq(B4, S4, RK1, Assembler::AVX_512bit);
__ evpxorq(B5, S5, RK1, Assembler::AVX_512bit);
__ evpxorq(B6, S6, RK1, Assembler::AVX_512bit);
__ evpxorq(B7, S7, RK1, Assembler::AVX_512bit);
__ evalignq(IV, S0, IV, 0x06);
__ evalignq(S0, S1, S0, 0x06);
__ evalignq(S1, S2, S1, 0x06);
__ evalignq(S2, S3, S2, 0x06);
__ evalignq(S3, S4, S3, 0x06);
__ evalignq(S4, S5, S4, 0x06);
__ evalignq(S5, S6, S5, 0x06);
__ evalignq(S6, S7, S6, 0x06);
roundDec(RK2);
roundDec(RK3);
roundDec(RK4);
roundDec(RK5);
roundDec(RK6);
roundDec(RK7);
roundDec(RK8);
roundDec(RK9);
roundDec(RK10);
__ cmpl(rounds, 44);
__ jcc(Assembler::belowEqual, L_128);
roundDec(RK11);
roundDec(RK12);
__ cmpl(rounds, 52);
__ jcc(Assembler::belowEqual, L_192);
roundDec(RK13);
roundDec(RK14);
__ BIND(L_256);
roundDeclast(RK0);
__ jmp(Loop2);
__ BIND(L_128);
roundDeclast(RK0);
__ jmp(Loop2);
__ BIND(L_192);
roundDeclast(RK0);
__ BIND(Loop2);
__ evpxorq(B0, B0, IV, Assembler::AVX_512bit);
__ evpxorq(B1, B1, S0, Assembler::AVX_512bit);
__ evpxorq(B2, B2, S1, Assembler::AVX_512bit);
__ evpxorq(B3, B3, S2, Assembler::AVX_512bit);
__ evpxorq(B4, B4, S3, Assembler::AVX_512bit);
__ evpxorq(B5, B5, S4, Assembler::AVX_512bit);
__ evpxorq(B6, B6, S5, Assembler::AVX_512bit);
__ evpxorq(B7, B7, S6, Assembler::AVX_512bit);
__ evmovdquq(IV, S7, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 0 * 64), B0, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 1 * 64), B1, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 2 * 64), B2, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 3 * 64), B3, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 4 * 64), B4, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 5 * 64), B5, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 6 * 64), B6, Assembler::AVX_512bit);
__ evmovdquq(Address(to, 7 * 64), B7, Assembler::AVX_512bit);
__ leaq(to, Address(to, 8 * 64));
__ jmp(Loop);
__ BIND(Lcbc_dec_rem);
__ evshufi64x2(IV, IV, IV, 0x03, Assembler::AVX_512bit);
__ BIND(Lcbc_dec_rem_loop);
__ subl(len_reg, 16);
__ jcc(Assembler::carrySet, Lcbc_dec_ret);
__ movdqu(S0, Address(from, 0));
__ evpxorq(B0, S0, RK1, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK2, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK3, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK4, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK5, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK6, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK7, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK8, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK9, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK10, Assembler::AVX_512bit);
__ cmpl(rounds, 44);
__ jcc(Assembler::belowEqual, Lcbc_dec_rem_last);
__ vaesdec(B0, B0, RK11, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK12, Assembler::AVX_512bit);
__ cmpl(rounds, 52);
__ jcc(Assembler::belowEqual, Lcbc_dec_rem_last);
__ vaesdec(B0, B0, RK13, Assembler::AVX_512bit);
__ vaesdec(B0, B0, RK14, Assembler::AVX_512bit);
__ BIND(Lcbc_dec_rem_last);
__ vaesdeclast(B0, B0, RK0, Assembler::AVX_512bit);
__ evpxorq(B0, B0, IV, Assembler::AVX_512bit);
__ evmovdquq(IV, S0, Assembler::AVX_512bit);
__ movdqu(Address(to, 0), B0);
__ leaq(from, Address(from, 16));
__ leaq(to, Address(to, 16));
__ jmp(Lcbc_dec_rem_loop);
__ BIND(Lcbc_dec_ret);
__ movdqu(Address(rvec, 0), IV);
// Zero out the round keys
__ evpxorq(RK0, RK0, RK0, Assembler::AVX_512bit);
__ evpxorq(RK1, RK1, RK1, Assembler::AVX_512bit);
__ evpxorq(RK2, RK2, RK2, Assembler::AVX_512bit);
__ evpxorq(RK3, RK3, RK3, Assembler::AVX_512bit);
__ evpxorq(RK4, RK4, RK4, Assembler::AVX_512bit);
__ evpxorq(RK5, RK5, RK5, Assembler::AVX_512bit);
__ evpxorq(RK6, RK6, RK6, Assembler::AVX_512bit);