1 /*
2 * Copyright (c) 1999, 2013, 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 #include "precompiled.hpp"
26 #include "c1/c1_FrameMap.hpp"
27 #include "c1/c1_LIR.hpp"
28 #include "runtime/sharedRuntime.hpp"
29 #include "vmreg_x86.inline.hpp"
30
31 const int FrameMap::pd_c_runtime_reserved_arg_size = 0;
32
map_to_opr(BasicType type,VMRegPair * reg,bool)33 LIR_Opr FrameMap::map_to_opr(BasicType type, VMRegPair* reg, bool) {
34 LIR_Opr opr = LIR_OprFact::illegalOpr;
35 VMReg r_1 = reg->first();
36 VMReg r_2 = reg->second();
37 if (r_1->is_stack()) {
38 // Convert stack slot to an SP offset
39 // The calling convention does not count the SharedRuntime::out_preserve_stack_slots() value
40 // so we must add it in here.
41 int st_off = (r_1->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size;
42 opr = LIR_OprFact::address(new LIR_Address(rsp_opr, st_off, type));
43 } else if (r_1->is_Register()) {
44 Register reg = r_1->as_Register();
45 if (r_2->is_Register() && (type == T_LONG || type == T_DOUBLE)) {
46 Register reg2 = r_2->as_Register();
47 #ifdef _LP64
48 assert(reg2 == reg, "must be same register");
49 opr = as_long_opr(reg);
50 #else
51 opr = as_long_opr(reg2, reg);
52 #endif // _LP64
53 } else if (type == T_OBJECT || type == T_ARRAY) {
54 opr = as_oop_opr(reg);
55 } else if (type == T_METADATA) {
56 opr = as_metadata_opr(reg);
57 } else if (type == T_ADDRESS) {
58 opr = as_address_opr(reg);
59 } else {
60 opr = as_opr(reg);
61 }
62 } else if (r_1->is_FloatRegister()) {
63 assert(type == T_DOUBLE || type == T_FLOAT, "wrong type");
64 int num = r_1->as_FloatRegister()->encoding();
65 if (type == T_FLOAT) {
66 opr = LIR_OprFact::single_fpu(num);
67 } else {
68 opr = LIR_OprFact::double_fpu(num);
69 }
70 } else if (r_1->is_XMMRegister()) {
71 assert(type == T_DOUBLE || type == T_FLOAT, "wrong type");
72 int num = r_1->as_XMMRegister()->encoding();
73 if (type == T_FLOAT) {
74 opr = LIR_OprFact::single_xmm(num);
75 } else {
76 opr = LIR_OprFact::double_xmm(num);
77 }
78 } else {
79 ShouldNotReachHere();
80 }
81 return opr;
82 }
83
84
85 LIR_Opr FrameMap::rsi_opr;
86 LIR_Opr FrameMap::rdi_opr;
87 LIR_Opr FrameMap::rbx_opr;
88 LIR_Opr FrameMap::rax_opr;
89 LIR_Opr FrameMap::rdx_opr;
90 LIR_Opr FrameMap::rcx_opr;
91 LIR_Opr FrameMap::rsp_opr;
92 LIR_Opr FrameMap::rbp_opr;
93
94 LIR_Opr FrameMap::receiver_opr;
95
96 LIR_Opr FrameMap::rsi_oop_opr;
97 LIR_Opr FrameMap::rdi_oop_opr;
98 LIR_Opr FrameMap::rbx_oop_opr;
99 LIR_Opr FrameMap::rax_oop_opr;
100 LIR_Opr FrameMap::rdx_oop_opr;
101 LIR_Opr FrameMap::rcx_oop_opr;
102
103 LIR_Opr FrameMap::rsi_metadata_opr;
104 LIR_Opr FrameMap::rdi_metadata_opr;
105 LIR_Opr FrameMap::rbx_metadata_opr;
106 LIR_Opr FrameMap::rax_metadata_opr;
107 LIR_Opr FrameMap::rdx_metadata_opr;
108 LIR_Opr FrameMap::rcx_metadata_opr;
109
110 LIR_Opr FrameMap::long0_opr;
111 LIR_Opr FrameMap::long1_opr;
112 LIR_Opr FrameMap::fpu0_float_opr;
113 LIR_Opr FrameMap::fpu0_double_opr;
114 LIR_Opr FrameMap::xmm0_float_opr;
115 LIR_Opr FrameMap::xmm0_double_opr;
116
117 #ifdef _LP64
118
119 LIR_Opr FrameMap::r8_opr;
120 LIR_Opr FrameMap::r9_opr;
121 LIR_Opr FrameMap::r10_opr;
122 LIR_Opr FrameMap::r11_opr;
123 LIR_Opr FrameMap::r12_opr;
124 LIR_Opr FrameMap::r13_opr;
125 LIR_Opr FrameMap::r14_opr;
126 LIR_Opr FrameMap::r15_opr;
127
128 // r10 and r15 can never contain oops since they aren't available to
129 // the allocator
130 LIR_Opr FrameMap::r8_oop_opr;
131 LIR_Opr FrameMap::r9_oop_opr;
132 LIR_Opr FrameMap::r11_oop_opr;
133 LIR_Opr FrameMap::r12_oop_opr;
134 LIR_Opr FrameMap::r13_oop_opr;
135 LIR_Opr FrameMap::r14_oop_opr;
136
137 LIR_Opr FrameMap::r8_metadata_opr;
138 LIR_Opr FrameMap::r9_metadata_opr;
139 LIR_Opr FrameMap::r11_metadata_opr;
140 LIR_Opr FrameMap::r12_metadata_opr;
141 LIR_Opr FrameMap::r13_metadata_opr;
142 LIR_Opr FrameMap::r14_metadata_opr;
143 #endif // _LP64
144
145 LIR_Opr FrameMap::_caller_save_cpu_regs[] = { 0, };
146 LIR_Opr FrameMap::_caller_save_fpu_regs[] = { 0, };
147 LIR_Opr FrameMap::_caller_save_xmm_regs[] = { 0, };
148
149 XMMRegister FrameMap::_xmm_regs [] = { 0, };
150
nr2xmmreg(int rnr)151 XMMRegister FrameMap::nr2xmmreg(int rnr) {
152 assert(_init_done, "tables not initialized");
153 return _xmm_regs[rnr];
154 }
155
156 //--------------------------------------------------------
157 // FrameMap
158 //--------------------------------------------------------
159
initialize()160 void FrameMap::initialize() {
161 assert(!_init_done, "once");
162
163 assert(nof_cpu_regs == LP64_ONLY(16) NOT_LP64(8), "wrong number of CPU registers");
164 map_register(0, rsi); rsi_opr = LIR_OprFact::single_cpu(0);
165 map_register(1, rdi); rdi_opr = LIR_OprFact::single_cpu(1);
166 map_register(2, rbx); rbx_opr = LIR_OprFact::single_cpu(2);
167 map_register(3, rax); rax_opr = LIR_OprFact::single_cpu(3);
168 map_register(4, rdx); rdx_opr = LIR_OprFact::single_cpu(4);
169 map_register(5, rcx); rcx_opr = LIR_OprFact::single_cpu(5);
170
171 #ifndef _LP64
172 // The unallocatable registers are at the end
173 map_register(6, rsp);
174 map_register(7, rbp);
175 #else
176 map_register( 6, r8); r8_opr = LIR_OprFact::single_cpu(6);
177 map_register( 7, r9); r9_opr = LIR_OprFact::single_cpu(7);
178 map_register( 8, r11); r11_opr = LIR_OprFact::single_cpu(8);
179 map_register( 9, r13); r13_opr = LIR_OprFact::single_cpu(9);
180 map_register(10, r14); r14_opr = LIR_OprFact::single_cpu(10);
181 // r12 is allocated conditionally. With compressed oops it holds
182 // the heapbase value and is not visible to the allocator.
183 map_register(11, r12); r12_opr = LIR_OprFact::single_cpu(11);
184 // The unallocatable registers are at the end
185 map_register(12, r10); r10_opr = LIR_OprFact::single_cpu(12);
186 map_register(13, r15); r15_opr = LIR_OprFact::single_cpu(13);
187 map_register(14, rsp);
188 map_register(15, rbp);
189 #endif // _LP64
190
191 #ifdef _LP64
192 long0_opr = LIR_OprFact::double_cpu(3 /*eax*/, 3 /*eax*/);
193 long1_opr = LIR_OprFact::double_cpu(2 /*ebx*/, 2 /*ebx*/);
194 #else
195 long0_opr = LIR_OprFact::double_cpu(3 /*eax*/, 4 /*edx*/);
196 long1_opr = LIR_OprFact::double_cpu(2 /*ebx*/, 5 /*ecx*/);
197 #endif // _LP64
198 fpu0_float_opr = LIR_OprFact::single_fpu(0);
199 fpu0_double_opr = LIR_OprFact::double_fpu(0);
200 xmm0_float_opr = LIR_OprFact::single_xmm(0);
201 xmm0_double_opr = LIR_OprFact::double_xmm(0);
202
203 _caller_save_cpu_regs[0] = rsi_opr;
204 _caller_save_cpu_regs[1] = rdi_opr;
205 _caller_save_cpu_regs[2] = rbx_opr;
206 _caller_save_cpu_regs[3] = rax_opr;
207 _caller_save_cpu_regs[4] = rdx_opr;
208 _caller_save_cpu_regs[5] = rcx_opr;
209
210 #ifdef _LP64
211 _caller_save_cpu_regs[6] = r8_opr;
212 _caller_save_cpu_regs[7] = r9_opr;
213 _caller_save_cpu_regs[8] = r11_opr;
214 _caller_save_cpu_regs[9] = r13_opr;
215 _caller_save_cpu_regs[10] = r14_opr;
216 _caller_save_cpu_regs[11] = r12_opr;
217 #endif // _LP64
218
219
220 _xmm_regs[0] = xmm0;
221 _xmm_regs[1] = xmm1;
222 _xmm_regs[2] = xmm2;
223 _xmm_regs[3] = xmm3;
224 _xmm_regs[4] = xmm4;
225 _xmm_regs[5] = xmm5;
226 _xmm_regs[6] = xmm6;
227 _xmm_regs[7] = xmm7;
228
229 #ifdef _LP64
230 _xmm_regs[8] = xmm8;
231 _xmm_regs[9] = xmm9;
232 _xmm_regs[10] = xmm10;
233 _xmm_regs[11] = xmm11;
234 _xmm_regs[12] = xmm12;
235 _xmm_regs[13] = xmm13;
236 _xmm_regs[14] = xmm14;
237 _xmm_regs[15] = xmm15;
238 _xmm_regs[16] = xmm16;
239 _xmm_regs[17] = xmm17;
240 _xmm_regs[18] = xmm18;
241 _xmm_regs[19] = xmm19;
242 _xmm_regs[20] = xmm20;
243 _xmm_regs[21] = xmm21;
244 _xmm_regs[22] = xmm22;
245 _xmm_regs[23] = xmm23;
246 _xmm_regs[24] = xmm24;
247 _xmm_regs[25] = xmm25;
248 _xmm_regs[26] = xmm26;
249 _xmm_regs[27] = xmm27;
250 _xmm_regs[28] = xmm28;
251 _xmm_regs[29] = xmm29;
252 _xmm_regs[30] = xmm30;
253 _xmm_regs[31] = xmm31;
254 #endif // _LP64
255
256 for (int i = 0; i < 8; i++) {
257 _caller_save_fpu_regs[i] = LIR_OprFact::single_fpu(i);
258 }
259
260 int num_caller_save_xmm_regs = get_num_caller_save_xmms();
261 for (int i = 0; i < num_caller_save_xmm_regs; i++) {
262 _caller_save_xmm_regs[i] = LIR_OprFact::single_xmm(i);
263 }
264
265 _init_done = true;
266
267 rsi_oop_opr = as_oop_opr(rsi);
268 rdi_oop_opr = as_oop_opr(rdi);
269 rbx_oop_opr = as_oop_opr(rbx);
270 rax_oop_opr = as_oop_opr(rax);
271 rdx_oop_opr = as_oop_opr(rdx);
272 rcx_oop_opr = as_oop_opr(rcx);
273
274 rsi_metadata_opr = as_metadata_opr(rsi);
275 rdi_metadata_opr = as_metadata_opr(rdi);
276 rbx_metadata_opr = as_metadata_opr(rbx);
277 rax_metadata_opr = as_metadata_opr(rax);
278 rdx_metadata_opr = as_metadata_opr(rdx);
279 rcx_metadata_opr = as_metadata_opr(rcx);
280
281 rsp_opr = as_pointer_opr(rsp);
282 rbp_opr = as_pointer_opr(rbp);
283
284 #ifdef _LP64
285 r8_oop_opr = as_oop_opr(r8);
286 r9_oop_opr = as_oop_opr(r9);
287 r11_oop_opr = as_oop_opr(r11);
288 r12_oop_opr = as_oop_opr(r12);
289 r13_oop_opr = as_oop_opr(r13);
290 r14_oop_opr = as_oop_opr(r14);
291
292 r8_metadata_opr = as_metadata_opr(r8);
293 r9_metadata_opr = as_metadata_opr(r9);
294 r11_metadata_opr = as_metadata_opr(r11);
295 r12_metadata_opr = as_metadata_opr(r12);
296 r13_metadata_opr = as_metadata_opr(r13);
297 r14_metadata_opr = as_metadata_opr(r14);
298 #endif // _LP64
299
300 VMRegPair regs;
301 BasicType sig_bt = T_OBJECT;
302 SharedRuntime::java_calling_convention(&sig_bt, ®s, 1, true);
303 receiver_opr = as_oop_opr(regs.first()->as_Register());
304
305 }
306
307
make_new_address(ByteSize sp_offset) const308 Address FrameMap::make_new_address(ByteSize sp_offset) const {
309 // for rbp, based address use this:
310 // return Address(rbp, in_bytes(sp_offset) - (framesize() - 2) * 4);
311 return Address(rsp, in_bytes(sp_offset));
312 }
313
314
315 // ----------------mapping-----------------------
316 // all mapping is based on rbp, addressing, except for simple leaf methods where we access
317 // the locals rsp based (and no frame is built)
318
319
320 // Frame for simple leaf methods (quick entries)
321 //
322 // +----------+
323 // | ret addr | <- TOS
324 // +----------+
325 // | args |
326 // | ...... |
327
328 // Frame for standard methods
329 //
330 // | .........| <- TOS
331 // | locals |
332 // +----------+
333 // | old rbp, | <- EBP
334 // +----------+
335 // | ret addr |
336 // +----------+
337 // | args |
338 // | .........|
339
340
341 // For OopMaps, map a local variable or spill index to an VMRegImpl name.
342 // This is the offset from sp() in the frame of the slot for the index,
343 // skewed by VMRegImpl::stack0 to indicate a stack location (vs.a register.)
344 //
345 // framesize +
346 // stack0 stack0 0 <- VMReg
347 // | | <registers> |
348 // ...........|..............|.............|
349 // 0 1 2 3 x x 4 5 6 ... | <- local indices
350 // ^ ^ sp() ( x x indicate link
351 // | | and return addr)
352 // arguments non-argument locals
353
354
fpu_regname(int n)355 VMReg FrameMap::fpu_regname (int n) {
356 // Return the OptoReg name for the fpu stack slot "n"
357 // A spilled fpu stack slot comprises to two single-word OptoReg's.
358 return as_FloatRegister(n)->as_VMReg();
359 }
360
stack_pointer()361 LIR_Opr FrameMap::stack_pointer() {
362 return FrameMap::rsp_opr;
363 }
364
365 // JSR 292
366 // On x86, there is no need to save the SP, because neither
367 // method handle intrinsics, nor compiled lambda forms modify it.
method_handle_invoke_SP_save_opr()368 LIR_Opr FrameMap::method_handle_invoke_SP_save_opr() {
369 return LIR_OprFact::illegalOpr;
370 }
371
validate_frame()372 bool FrameMap::validate_frame() {
373 return true;
374 }
375