src/cpu/x86/vm/stubGenerator_x86_64.cpp
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*** old/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Fri Dec 14 19:10:19 2012
--- new/src/cpu/x86/vm/stubGenerator_x86_64.cpp	Fri Dec 14 19:10:19 2012

*** 2951,2984 **** --- 2951,2969 ---- } else { __ pshufb(xmmdst, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); } } // aesenc using specified key+offset // can optionally specify that the shuffle mask is already in an xmmregister void aes_enc_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { load_key(xmmtmp, key, offset, xmm_shuf_mask); __ aesenc(xmmdst, xmmtmp); } // aesdec using specified key+offset // can optionally specify that the shuffle mask is already in an xmmregister void aes_dec_key(XMMRegister xmmdst, XMMRegister xmmtmp, Register key, int offset, XMMRegister xmm_shuf_mask=NULL) { load_key(xmmtmp, key, offset, xmm_shuf_mask); __ aesdec(xmmdst, xmmtmp); } // Arguments: // // Inputs: // c_rarg0 - source byte array address // c_rarg1 - destination byte array address // c_rarg2 - K (key) in little endian int array // address generate_aescrypt_encryptBlock() { - assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); __ align(CodeEntryAlignment); StubCodeMark mark(this, "StubRoutines", "aescrypt_encryptBlock"); Label L_doLast; address start = __ pc();
*** 2986,3030 **** --- 2971,3045 ---- const Register to = c_rarg1; // destination array address const Register key = c_rarg2; // key array address const Register keylen = rax; const XMMRegister xmm_result = xmm0; ! const XMMRegister xmm_temp = xmm1; const XMMRegister xmm_key_shuf_mask = xmm2; ! const XMMRegister xmm_key_shuf_mask = xmm1; + // On win64 xmm6-xmm15 must be preserved so don't use them. + const XMMRegister xmm_temp1 = xmm2; + const XMMRegister xmm_temp2 = xmm3; + const XMMRegister xmm_temp3 = xmm4; + const XMMRegister xmm_temp4 = xmm5; __ enter(); // required for proper stackwalking of RuntimeStub frame + // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); // keylen = # of 32-bit words, convert to 128-bit words __ shrl(keylen, 2); __ subl(keylen, 11); // every key has at least 11 128-bit words, some have more __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); __ movdqu(xmm_result, Address(from, 0)); // get 16 bytes of input // For encryption, the java expanded key ordering is just what we need // we don't know if the key is aligned, hence not using load-execute form ! load_key(xmm_temp1, key, 0x00, xmm_key_shuf_mask); ! __ pxor(xmm_result, xmm_temp); for (int offset = 0x10; offset <= 0x90; offset += 0x10) { ! aes_enc_key(xmm_result, xmm_temp, key, offset, xmm_key_shuf_mask); } ! load_key (xmm_temp, key, 0xa0, xmm_key_shuf_mask); ! __ cmpl(keylen, 0); __ jcc(Assembler::equal, L_doLast); ! __ aesenc(xmm_result, xmm_temp); // only in 192 and 256 bit keys ! aes_enc_key(xmm_result, xmm_temp, key, 0xb0, xmm_key_shuf_mask); ! load_key(xmm_temp, key, 0xc0, xmm_key_shuf_mask); ! __ subl(keylen, 2); __ jcc(Assembler::equal, L_doLast); __ aesenc(xmm_result, xmm_temp); // only in 256 bit keys ! aes_enc_key(xmm_result, xmm_temp, key, 0xd0, xmm_key_shuf_mask); ! load_key(xmm_temp, key, 0xe0, xmm_key_shuf_mask); ! __ pxor(xmm_result, xmm_temp1); + ! load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); + load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); ! load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); ! load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); + ! __ aesenc(xmm_result, xmm_temp1); ! __ aesenc(xmm_result, xmm_temp2); ! __ aesenc(xmm_result, xmm_temp3); ! __ aesenc(xmm_result, xmm_temp4); + + load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); ! load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); ! load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); + load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); + + __ aesenc(xmm_result, xmm_temp1); + __ aesenc(xmm_result, xmm_temp2); + __ aesenc(xmm_result, xmm_temp3); + __ aesenc(xmm_result, xmm_temp4); + + load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); + load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); + + __ cmpl(keylen, 44); + __ jccb(Assembler::equal, L_doLast); + + __ aesenc(xmm_result, xmm_temp1); + __ aesenc(xmm_result, xmm_temp2); + + load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); + load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); + + __ cmpl(keylen, 52); + __ jccb(Assembler::equal, L_doLast); + + __ aesenc(xmm_result, xmm_temp1); + __ aesenc(xmm_result, xmm_temp2); + + load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); + load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); __ BIND(L_doLast); ! __ aesenclast(xmm_result, xmm_temp); ! __ aesenc(xmm_result, xmm_temp1); + __ aesenclast(xmm_result, xmm_temp2); __ movdqu(Address(to, 0), xmm_result); // store the result __ xorptr(rax, rax); // return 0 __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0);
*** 3038,3048 **** --- 3053,3063 ---- // c_rarg0 - source byte array address // c_rarg1 - destination byte array address // c_rarg2 - K (key) in little endian int array // address generate_aescrypt_decryptBlock() { - assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); __ align(CodeEntryAlignment); StubCodeMark mark(this, "StubRoutines", "aescrypt_decryptBlock"); Label L_doLast; address start = __ pc();
*** 3050,3098 **** --- 3065,3141 ---- const Register to = c_rarg1; // destination array address const Register key = c_rarg2; // key array address const Register keylen = rax; const XMMRegister xmm_result = xmm0; ! const XMMRegister xmm_temp = xmm1; const XMMRegister xmm_key_shuf_mask = xmm2; ! const XMMRegister xmm_key_shuf_mask = xmm1; + // On win64 xmm6-xmm15 must be preserved so don't use them. + const XMMRegister xmm_temp1 = xmm2; + const XMMRegister xmm_temp2 = xmm3; + const XMMRegister xmm_temp3 = xmm4; + const XMMRegister xmm_temp4 = xmm5; __ enter(); // required for proper stackwalking of RuntimeStub frame + // keylen could be only {11, 13, 15} * 4 = {44, 52, 60} __ movl(keylen, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); // keylen = # of 32-bit words, convert to 128-bit words __ shrl(keylen, 2); __ subl(keylen, 11); // every key has at least 11 128-bit words, some have more __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); __ movdqu(xmm_result, Address(from, 0)); // for decryption java expanded key ordering is rotated one position from what we want // so we start from 0x10 here and hit 0x00 last // we don't know if the key is aligned, hence not using load-execute form ! load_key(xmm_temp1, key, 0x10, xmm_key_shuf_mask); ! __ pxor (xmm_result, xmm_temp); for (int offset = 0x20; offset <= 0xa0; offset += 0x10) { ! aes_dec_key(xmm_result, xmm_temp, key, offset, xmm_key_shuf_mask); } ! __ cmpl(keylen, 0); ! __ jcc(Assembler::equal, L_doLast); // only in 192 and 256 bit keys ! aes_dec_key(xmm_result, xmm_temp, key, 0xb0, xmm_key_shuf_mask); aes_dec_key(xmm_result, xmm_temp, key, 0xc0, xmm_key_shuf_mask); ! __ subl(keylen, 2); ! __ jcc(Assembler::equal, L_doLast); // only in 256 bit keys ! aes_dec_key(xmm_result, xmm_temp, key, 0xd0, xmm_key_shuf_mask); aes_dec_key(xmm_result, xmm_temp, key, 0xe0, xmm_key_shuf_mask); ! load_key(xmm_temp2, key, 0x20, xmm_key_shuf_mask); + load_key(xmm_temp3, key, 0x30, xmm_key_shuf_mask); ! load_key(xmm_temp4, key, 0x40, xmm_key_shuf_mask); + ! __ pxor (xmm_result, xmm_temp1); ! __ aesdec(xmm_result, xmm_temp2); + __ aesdec(xmm_result, xmm_temp3); ! __ aesdec(xmm_result, xmm_temp4); + ! load_key(xmm_temp1, key, 0x50, xmm_key_shuf_mask); ! load_key(xmm_temp2, key, 0x60, xmm_key_shuf_mask); + load_key(xmm_temp3, key, 0x70, xmm_key_shuf_mask); ! load_key(xmm_temp4, key, 0x80, xmm_key_shuf_mask); + + __ aesdec(xmm_result, xmm_temp1); + __ aesdec(xmm_result, xmm_temp2); + __ aesdec(xmm_result, xmm_temp3); + __ aesdec(xmm_result, xmm_temp4); + + load_key(xmm_temp1, key, 0x90, xmm_key_shuf_mask); + load_key(xmm_temp2, key, 0xa0, xmm_key_shuf_mask); + load_key(xmm_temp3, key, 0x00, xmm_key_shuf_mask); + + __ cmpl(keylen, 44); + __ jccb(Assembler::equal, L_doLast); + + __ aesdec(xmm_result, xmm_temp1); + __ aesdec(xmm_result, xmm_temp2); + + load_key(xmm_temp1, key, 0xb0, xmm_key_shuf_mask); + load_key(xmm_temp2, key, 0xc0, xmm_key_shuf_mask); + + __ cmpl(keylen, 52); + __ jccb(Assembler::equal, L_doLast); + + __ aesdec(xmm_result, xmm_temp1); + __ aesdec(xmm_result, xmm_temp2); + + load_key(xmm_temp1, key, 0xd0, xmm_key_shuf_mask); + load_key(xmm_temp2, key, 0xe0, xmm_key_shuf_mask); __ BIND(L_doLast); // for decryption the aesdeclast operation is always on key+0x00 ! load_key(xmm_temp, key, 0x00, xmm_key_shuf_mask); __ aesdeclast(xmm_result, xmm_temp); + __ aesdec(xmm_result, xmm_temp1); ! __ aesdec(xmm_result, xmm_temp2); + // for decryption the aesdeclast operation is always on key+0x00 + __ aesdeclast(xmm_result, xmm_temp3); __ movdqu(Address(to, 0), xmm_result); // store the result __ xorptr(rax, rax); // return 0 __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); return start;
*** 3107,3117 **** --- 3150,3160 ---- // c_rarg2 - K (key) in little endian int array // c_rarg3 - r vector byte array address // c_rarg4 - input length // address generate_cipherBlockChaining_encryptAESCrypt() { - assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); __ align(CodeEntryAlignment); StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_encryptAESCrypt"); address start = __ pc(); Label L_exit, L_key_192_256, L_key_256, L_loopTop_128, L_loopTop_192, L_loopTop_256;
*** 3131,3184 **** --- 3174,3228 ---- // xmm register assignments for the loops below const XMMRegister xmm_result = xmm0; const XMMRegister xmm_temp = xmm1; // keys 0-10 preloaded into xmm2-xmm12 const int XMM_REG_NUM_KEY_FIRST = 2; ! const int XMM_REG_NUM_KEY_LAST = 12; ! const int XMM_REG_NUM_KEY_LAST = 15; const XMMRegister xmm_key0 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); ! const XMMRegister xmm_key10 = as_XMMRegister(XMM_REG_NUM_KEY_LAST); ! const XMMRegister xmm_key10 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+10); + const XMMRegister xmm_key11 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+11); + const XMMRegister xmm_key12 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+12); + const XMMRegister xmm_key13 = as_XMMRegister(XMM_REG_NUM_KEY_FIRST+13); __ enter(); // required for proper stackwalking of RuntimeStub frame #ifdef _WIN64 // on win64, fill len_reg from stack position __ movl(len_reg, len_mem); ! // save the xmm registers which must be preserved 6-12 ! // save the xmm registers which must be preserved 6-15 __ subptr(rsp, -rsp_after_call_off * wordSize); for (int i = 6; i <= XMM_REG_NUM_KEY_LAST; i++) { __ movdqu(xmm_save(i), as_XMMRegister(i)); } #endif const XMMRegister xmm_key_shuf_mask = xmm_temp; // used temporarily to swap key bytes up front __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); ! // load up xmm regs xmm2 thru xmm12 with key 0x00 - 0xa0 ! for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { ! for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x00; rnum <= XMM_REG_NUM_KEY_FIRST+10; rnum++) { load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); offset += 0x10; } __ movdqu(xmm_result, Address(rvec, 0x00)); // initialize xmm_result with r vec // now split to different paths depending on the keylen (len in ints of AESCrypt.KLE array (52=192, or 60=256)) __ movl(rax, Address(key, arrayOopDesc::length_offset_in_bytes() - arrayOopDesc::base_offset_in_bytes(T_INT))); __ cmpl(rax, 44); __ jcc(Assembler::notEqual, L_key_192_256); // 128 bit code follows here __ movptr(pos, 0); __ align(OptoLoopAlignment); + __ BIND(L_loopTop_128); __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input __ pxor (xmm_result, xmm_temp); // xor with the current r vector __ pxor (xmm_result, xmm_key0); // do the aes rounds ! for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { ! for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_FIRST + 9; rnum++) { __ aesenc(xmm_result, as_XMMRegister(rnum)); } __ aesenclast(xmm_result, xmm_key10); __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output // no need to store r to memory until we exit __ addptr(pos, AESBlockSize); __ subptr(len_reg, AESBlockSize); __ jcc(Assembler::notEqual, L_loopTop_128);
*** 3196,3248 **** --- 3240,3288 ---- __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); __ BIND(L_key_192_256); // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) + load_key(xmm_key11, key, 0xb0, xmm_key_shuf_mask); + load_key(xmm_key12, key, 0xc0, xmm_key_shuf_mask); __ cmpl(rax, 52); __ jcc(Assembler::notEqual, L_key_256); // 192-bit code follows here (could be changed to use more xmm registers) __ movptr(pos, 0); __ align(OptoLoopAlignment); + __ BIND(L_loopTop_192); __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input __ pxor (xmm_result, xmm_temp); // xor with the current r vector __ pxor (xmm_result, xmm_key0); // do the aes rounds ! for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { ! for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_FIRST + 11; rnum++) { __ aesenc(xmm_result, as_XMMRegister(rnum)); } ! aes_enc_key(xmm_result, xmm_temp, key, 0xb0); load_key(xmm_temp, key, 0xc0); __ aesenclast(xmm_result, xmm_temp); ! __ aesenclast(xmm_result, xmm_key12); __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output // no need to store r to memory until we exit __ addptr(pos, AESBlockSize); __ subptr(len_reg, AESBlockSize); __ jcc(Assembler::notEqual, L_loopTop_192); __ jmp(L_exit); __ BIND(L_key_256); // 256-bit code follows here (could be changed to use more xmm registers) + load_key(xmm_key13, key, 0xd0, xmm_key_shuf_mask); __ movptr(pos, 0); __ align(OptoLoopAlignment); + __ BIND(L_loopTop_256); __ movdqu(xmm_temp, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of input __ pxor (xmm_result, xmm_temp); // xor with the current r vector __ pxor (xmm_result, xmm_key0); // do the aes rounds ! for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { ! for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_FIRST + 13; rnum++) { __ aesenc(xmm_result, as_XMMRegister(rnum)); } aes_enc_key(xmm_result, xmm_temp, key, 0xb0); aes_enc_key(xmm_result, xmm_temp, key, 0xc0); aes_enc_key(xmm_result, xmm_temp, key, 0xd0); load_key(xmm_temp, key, 0xe0); __ aesenclast(xmm_result, xmm_temp); __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output // no need to store r to memory until we exit __ addptr(pos, AESBlockSize); __ subptr(len_reg, AESBlockSize); __ jcc(Assembler::notEqual, L_loopTop_256);
*** 3265,3275 **** --- 3305,3315 ---- // c_rarg3 - r vector byte array address // c_rarg4 - input length // address generate_cipherBlockChaining_decryptAESCrypt_Parallel() { - assert(UseAES && (UseAVX > 0), "need AES instructions and misaligned SSE support"); __ align(CodeEntryAlignment); StubCodeMark mark(this, "StubRoutines", "cipherBlockChaining_decryptAESCrypt"); address start = __ pc(); Label L_exit, L_key_192_256, L_key_256;
*** 3286,3297 **** --- 3326,3335 ---- const Address len_mem(rsp, 6 * wordSize); // length is on stack on Win64 const Register len_reg = r10; // pick the first volatile windows register #endif const Register pos = rax; // xmm register assignments for the loops below const XMMRegister xmm_result = xmm0; // keys 0-10 preloaded into xmm2-xmm12 const int XMM_REG_NUM_KEY_FIRST = 5; const int XMM_REG_NUM_KEY_LAST = 15; const XMMRegister xmm_key_first = as_XMMRegister(XMM_REG_NUM_KEY_FIRST); const XMMRegister xmm_key_last = as_XMMRegister(XMM_REG_NUM_KEY_LAST);
*** 3310,3326 **** --- 3348,3365 ---- // the java expanded key ordering is rotated one position from what we want // so we start from 0x10 here and hit 0x00 last const XMMRegister xmm_key_shuf_mask = xmm1; // used temporarily to swap key bytes up front __ movdqu(xmm_key_shuf_mask, ExternalAddress(StubRoutines::x86::key_shuffle_mask_addr())); // load up xmm regs 5 thru 15 with key 0x10 - 0xa0 - 0x00 - for (int rnum = XMM_REG_NUM_KEY_FIRST, offset = 0x10; rnum <= XMM_REG_NUM_KEY_LAST; rnum++) { if (rnum == XMM_REG_NUM_KEY_LAST) offset = 0x00; load_key(as_XMMRegister(rnum), key, offset, xmm_key_shuf_mask); offset += 0x10; } + load_key(xmm_key_last, key, 0x00, xmm_key_shuf_mask); const XMMRegister xmm_prev_block_cipher = xmm1; // holds cipher of previous block + // registers holding the four results in the parallelized loop const XMMRegister xmm_result0 = xmm0; const XMMRegister xmm_result1 = xmm2; const XMMRegister xmm_result2 = xmm3; const XMMRegister xmm_result3 = xmm4;
*** 3374,3385 **** --- 3413,3428 ---- __ addptr(pos, 4*AESBlockSize); __ subptr(len_reg, 4*AESBlockSize); __ jmp(L_multiBlock_loopTop_128); // registers used in the non-parallelized loops + // xmm register assignments for the loops below + const XMMRegister xmm_result = xmm0; const XMMRegister xmm_prev_block_cipher_save = xmm2; ! const XMMRegister xmm_temp = xmm3; ! const XMMRegister xmm_key11 = xmm3; + const XMMRegister xmm_key12 = xmm4; + const XMMRegister xmm_temp = xmm4; __ align(OptoLoopAlignment); __ BIND(L_singleBlock_loopTop_128); __ cmpptr(len_reg, 0); // any blocks left?? __ jcc(Assembler::equal, L_exit);
*** 3413,3469 **** --- 3456,3517 ---- __ ret(0); __ BIND(L_key_192_256); // here rax = len in ints of AESCrypt.KLE array (52=192, or 60=256) + load_key(xmm_key11, key, 0xb0); __ cmpl(rax, 52); __ jcc(Assembler::notEqual, L_key_256); // 192-bit code follows here (could be optimized to use parallelism) + load_key(xmm_key12, key, 0xc0); // 192-bit key goes up to c0 __ movptr(pos, 0); __ align(OptoLoopAlignment); + __ BIND(L_singleBlock_loopTop_192); __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { __ aesdec(xmm_result, as_XMMRegister(rnum)); } aes_dec_key(xmm_result, xmm_temp, key, 0xb0); // 192-bit key goes up to c0 ! aes_dec_key(xmm_result, xmm_temp, key, 0xc0); + __ aesdec(xmm_result, xmm_key11); ! __ aesdec(xmm_result, xmm_key12); __ aesdeclast(xmm_result, xmm_key_last); // xmm15 always came from key+0 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output // no need to store r to memory until we exit __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block __ addptr(pos, AESBlockSize); __ subptr(len_reg, AESBlockSize); __ jcc(Assembler::notEqual,L_singleBlock_loopTop_192); __ jmp(L_exit); __ BIND(L_key_256); // 256-bit code follows here (could be optimized to use parallelism) __ movptr(pos, 0); __ align(OptoLoopAlignment); + __ BIND(L_singleBlock_loopTop_256); __ movdqu(xmm_result, Address(from, pos, Address::times_1, 0)); // get next 16 bytes of cipher input __ movdqa(xmm_prev_block_cipher_save, xmm_result); // save for next r vector __ pxor (xmm_result, xmm_key_first); // do the aes dec rounds for (int rnum = XMM_REG_NUM_KEY_FIRST + 1; rnum <= XMM_REG_NUM_KEY_LAST - 1; rnum++) { __ aesdec(xmm_result, as_XMMRegister(rnum)); } aes_dec_key(xmm_result, xmm_temp, key, 0xb0); // 256-bit key goes up to e0 ! aes_dec_key(xmm_result, xmm_temp, key, 0xc0); ! aes_dec_key(xmm_result, xmm_temp, key, 0xd0); ! aes_dec_key(xmm_result, xmm_temp, key, 0xe0); + __ aesdec(xmm_result, xmm_key11); ! load_key(xmm_temp, key, 0xc0); ! __ aesdec(xmm_result, xmm_temp); ! load_key(xmm_temp, key, 0xd0); + __ aesdec(xmm_result, xmm_temp); + load_key(xmm_temp, key, 0xe0); // 256-bit key goes up to e0 + __ aesdec(xmm_result, xmm_temp); __ aesdeclast(xmm_result, xmm_key_last); // xmm15 came from key+0 __ pxor (xmm_result, xmm_prev_block_cipher); // xor with the current r vector __ movdqu(Address(to, pos, Address::times_1, 0), xmm_result); // store into the next 16 bytes of output // no need to store r to memory until we exit __ movdqa(xmm_prev_block_cipher, xmm_prev_block_cipher_save); // set up next r vector with cipher input from this block __ addptr(pos, AESBlockSize); __ subptr(len_reg, AESBlockSize); __ jcc(Assembler::notEqual,L_singleBlock_loopTop_256); __ jmp(L_exit);

src/cpu/x86/vm/stubGenerator_x86_64.cpp
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