1 /*
  2  * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 24 
 25 #ifndef CPU_X86_STUBROUTINES_X86_HPP
 26 #define CPU_X86_STUBROUTINES_X86_HPP
 27 
 28 // This file holds the platform specific parts of the StubRoutines
 29 // definition. See stubRoutines.hpp for a description on how to
 30 // extend it.
 31 
 32 static bool returns_to_call_stub(address return_pc) { return return_pc == _call_stub_return_address; }
 33 
 34 enum platform_dependent_constants {
 35   code_size1 = 20000 LP64_ONLY(+10000),         // simply increase if too small (assembler will crash if too small)
 36   code_size2 = 35300 LP64_ONLY(+11400)          // simply increase if too small (assembler will crash if too small)
 37 };
 38 
 39 class x86 {
 40  friend class StubGenerator;
 41  friend class VMStructs;
 42 
 43 #ifdef _LP64
 44  private:
 45   static address _get_previous_fp_entry;
 46   static address _get_previous_sp_entry;
 47 
 48   static address _f2i_fixup;
 49   static address _f2l_fixup;
 50   static address _d2i_fixup;
 51   static address _d2l_fixup;
 52 
 53   static address _float_sign_mask;
 54   static address _float_sign_flip;
 55   static address _double_sign_mask;
 56   static address _double_sign_flip;
 57 
 58  public:
 59 
 60   static address get_previous_fp_entry() {
 61     return _get_previous_fp_entry;
 62   }
 63 
 64   static address get_previous_sp_entry() {
 65     return _get_previous_sp_entry;
 66   }
 67 
 68   static address f2i_fixup() {
 69     return _f2i_fixup;
 70   }
 71 
 72   static address f2l_fixup() {
 73     return _f2l_fixup;
 74   }
 75 
 76   static address d2i_fixup() {
 77     return _d2i_fixup;
 78   }
 79 
 80   static address d2l_fixup() {
 81     return _d2l_fixup;
 82   }
 83 
 84   static address float_sign_mask() {
 85     return _float_sign_mask;
 86   }
 87 
 88   static address float_sign_flip() {
 89     return _float_sign_flip;
 90   }
 91 
 92   static address double_sign_mask() {
 93     return _double_sign_mask;
 94   }
 95 
 96   static address double_sign_flip() {
 97     return _double_sign_flip;
 98   }
 99 
100 #else // !LP64
101 
102  private:
103   static address _verify_fpu_cntrl_wrd_entry;
104 
105  public:
106   static address verify_fpu_cntrl_wrd_entry() { return _verify_fpu_cntrl_wrd_entry; }
107 
108 #endif // !LP64
109 
110  private:
111   static address _verify_mxcsr_entry;
112   // shuffle mask for fixing up 128-bit words consisting of big-endian 32-bit integers
113   static address _key_shuffle_mask_addr;
114 
115   //shuffle mask for big-endian 128-bit integers
116   static address _counter_shuffle_mask_addr;
117 
118   static address _method_entry_barrier;
119 
120   // masks and table for CRC32
121   static uint64_t _crc_by128_masks[];
122   static juint    _crc_table[];
123   // table for CRC32C
124   static juint* _crc32c_table;
125   // swap mask for ghash
126   static address _ghash_long_swap_mask_addr;
127   static address _ghash_byte_swap_mask_addr;
128   static address _ghash_poly_addr;
129   static address _ghash_shuffmask_addr;
130 
131   // upper word mask for sha1
132   static address _upper_word_mask_addr;
133   // byte flip mask for sha1
134   static address _shuffle_byte_flip_mask_addr;
135 
136   //k256 table for sha256
137   static juint _k256[];
138   static address _k256_adr;
139   static address _vector_short_to_byte_mask;
140   static address _vector_float_sign_mask;
141   static address _vector_float_sign_flip;
142   static address _vector_double_sign_mask;
143   static address _vector_double_sign_flip;
144   static address _vector_byte_perm_mask;
145   static address _vector_long_sign_mask;
146 #ifdef _LP64
147   static juint _k256_W[];
148   static address _k256_W_adr;
149   static julong _k512_W[];
150   static address _k512_W_addr;
151   // byte flip mask for sha512
152   static address _pshuffle_byte_flip_mask_addr_sha512;
153   static address _counter_mask_addr;
154   // Masks for base64
155   static address _base64_charset;
156   static address _bswap_mask;
157   static address _gather_mask;
158   static address _right_shift_mask;
159   static address _left_shift_mask;
160   static address _and_mask;
161   static address _url_charset;
162 #endif
163   // byte flip mask for sha256
164   static address _pshuffle_byte_flip_mask_addr;
165 
166   //tables common for LIBM sin and cos
167   static juint _ONEHALF[];
168   static address _ONEHALF_adr;
169   static juint _P_2[];
170   static address _P_2_adr;
171   static juint _SC_4[];
172   static address _SC_4_adr;
173   static juint _Ctable[];
174   static address _Ctable_adr;
175   static juint _SC_2[];
176   static address _SC_2_adr;
177   static juint _SC_3[];
178   static address _SC_3_adr;
179   static juint _SC_1[];
180   static address _SC_1_adr;
181   static juint _PI_INV_TABLE[];
182   static address _PI_INV_TABLE_adr;
183   static juint _PI_4[];
184   static address _PI_4_adr;
185   static juint _PI32INV[];
186   static address _PI32INV_adr;
187   static juint _SIGN_MASK[];
188   static address _SIGN_MASK_adr;
189   static juint _P_1[];
190   static address _P_1_adr;
191   static juint _P_3[];
192   static address _P_3_adr;
193   static juint _NEG_ZERO[];
194   static address _NEG_ZERO_adr;
195 
196   //tables common for LIBM sincos and tancot
197   static juint _L_2il0floatpacket_0[];
198   static address _L_2il0floatpacket_0_adr;
199   static juint _Pi4Inv[];
200   static address _Pi4Inv_adr;
201   static juint _Pi4x3[];
202   static address _Pi4x3_adr;
203   static juint _Pi4x4[];
204   static address _Pi4x4_adr;
205   static juint _ones[];
206   static address _ones_adr;
207 
208  public:
209   static address verify_mxcsr_entry()    { return _verify_mxcsr_entry; }
210   static address key_shuffle_mask_addr() { return _key_shuffle_mask_addr; }
211   static address counter_shuffle_mask_addr() { return _counter_shuffle_mask_addr; }
212   static address crc_by128_masks_addr()  { return (address)_crc_by128_masks; }
213   static address ghash_long_swap_mask_addr() { return _ghash_long_swap_mask_addr; }
214   static address ghash_byte_swap_mask_addr() { return _ghash_byte_swap_mask_addr; }
215   static address ghash_shufflemask_addr() { return _ghash_shuffmask_addr; }
216   static address ghash_polynomial_addr() { return _ghash_poly_addr; }
217   static address upper_word_mask_addr() { return _upper_word_mask_addr; }
218   static address shuffle_byte_flip_mask_addr() { return _shuffle_byte_flip_mask_addr; }
219   static address k256_addr()      { return _k256_adr; }
220   static address method_entry_barrier() { return _method_entry_barrier; }
221 
222   static address vector_short_to_byte_mask() {
223     return _vector_short_to_byte_mask;
224   }
225   static address vector_float_sign_mask() {
226     return _vector_float_sign_mask;
227   }
228 
229   static address vector_float_sign_flip() {
230     return _vector_float_sign_flip;
231   }
232 
233   static address vector_double_sign_mask() {
234     return _vector_double_sign_mask;
235   }
236 
237   static address vector_double_sign_flip() {
238     return _vector_double_sign_flip;
239   }
240 
241   static address vector_byte_perm_mask() {
242     return _vector_byte_perm_mask;
243   }
244 
245   static address vector_long_sign_mask() {
246     return _vector_long_sign_mask;
247   }
248 #ifdef _LP64
249   static address k256_W_addr()    { return _k256_W_adr; }
250   static address k512_W_addr()    { return _k512_W_addr; }
251   static address pshuffle_byte_flip_mask_addr_sha512() { return _pshuffle_byte_flip_mask_addr_sha512; }
252   static address base64_charset_addr() { return _base64_charset; }
253   static address base64url_charset_addr() { return _url_charset; }
254   static address base64_bswap_mask_addr() { return _bswap_mask; }
255   static address base64_gather_mask_addr() { return _gather_mask; }
256   static address base64_right_shift_mask_addr() { return _right_shift_mask; }
257   static address base64_left_shift_mask_addr() { return _left_shift_mask; }
258   static address base64_and_mask_addr() { return _and_mask; }
259   static address counter_mask_addr() { return _counter_mask_addr; }
260 #endif
261   static address pshuffle_byte_flip_mask_addr() { return _pshuffle_byte_flip_mask_addr; }
262   static void generate_CRC32C_table(bool is_pclmulqdq_supported);
263   static address _ONEHALF_addr()      { return _ONEHALF_adr; }
264   static address _P_2_addr()      { return _P_2_adr; }
265   static address _SC_4_addr()      { return _SC_4_adr; }
266   static address _Ctable_addr()      { return _Ctable_adr; }
267   static address _SC_2_addr()      { return _SC_2_adr; }
268   static address _SC_3_addr()      { return _SC_3_adr; }
269   static address _SC_1_addr()      { return _SC_1_adr; }
270   static address _PI_INV_TABLE_addr()      { return _PI_INV_TABLE_adr; }
271   static address _PI_4_addr()      { return _PI_4_adr; }
272   static address _PI32INV_addr()      { return _PI32INV_adr; }
273   static address _SIGN_MASK_addr()      { return _SIGN_MASK_adr; }
274   static address _P_1_addr()      { return _P_1_adr; }
275   static address _P_3_addr()      { return _P_3_adr; }
276   static address _NEG_ZERO_addr()      { return _NEG_ZERO_adr; }
277   static address _L_2il0floatpacket_0_addr()      { return _L_2il0floatpacket_0_adr; }
278   static address _Pi4Inv_addr()      { return _Pi4Inv_adr; }
279   static address _Pi4x3_addr()      { return _Pi4x3_adr; }
280   static address _Pi4x4_addr()      { return _Pi4x4_adr; }
281   static address _ones_addr()      { return _ones_adr; }
282 
283 };
284 
285 #endif // CPU_X86_STUBROUTINES_X86_HPP