1/*
2 * Copyright (c) 2000, 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 SHARE_C1_C1_LIRASSEMBLER_HPP
26#define SHARE_C1_C1_LIRASSEMBLER_HPP
27
28#include "c1/c1_CodeStubs.hpp"
29#include "ci/ciMethodData.hpp"
30#include "oops/methodData.hpp"
31#include "utilities/macros.hpp"
32
33class Compilation;
34class ScopeValue;
35class BarrierSet;
36
37class LIR_Assembler: public CompilationResourceObj {
38 private:
39 C1_MacroAssembler* _masm;
40 CodeStubList* _slow_case_stubs;
41 BarrierSet* _bs;
42
43 Compilation* _compilation;
44 FrameMap* _frame_map;
45 BlockBegin* _current_block;
46
47 Instruction* _pending_non_safepoint;
48 int _pending_non_safepoint_offset;
49
50 Label _unwind_handler_entry;
51
52#ifdef ASSERT
53 BlockList _branch_target_blocks;
54 void check_no_unbound_labels();
55#endif
56
57 FrameMap* frame_map() const { return _frame_map; }
58
59 void set_current_block(BlockBegin* b) { _current_block = b; }
60 BlockBegin* current_block() const { return _current_block; }
61
62 // non-safepoint debug info management
63 void flush_debug_info(int before_pc_offset) {
64 if (_pending_non_safepoint != NULL) {
65 if (_pending_non_safepoint_offset < before_pc_offset)
66 record_non_safepoint_debug_info();
67 _pending_non_safepoint = NULL;
68 }
69 }
70 void process_debug_info(LIR_Op* op);
71 void record_non_safepoint_debug_info();
72
73 // unified bailout support
74 void bailout(const char* msg) const { compilation()->bailout(msg); }
75 bool bailed_out() const { return compilation()->bailed_out(); }
76
77 // code emission patterns and accessors
78 void check_codespace();
79 bool needs_icache(ciMethod* method) const;
80
81 // returns offset of icache check
82 int check_icache();
83
84 bool needs_clinit_barrier_on_entry(ciMethod* method) const;
85 void clinit_barrier(ciMethod* method);
86
87 void jobject2reg(jobject o, Register reg);
88 void jobject2reg_with_patching(Register reg, CodeEmitInfo* info);
89
90 void metadata2reg(Metadata* o, Register reg);
91 void klass2reg_with_patching(Register reg, CodeEmitInfo* info);
92
93 void emit_stubs(CodeStubList* stub_list);
94
95 // addresses
96 Address as_Address(LIR_Address* addr);
97 Address as_Address_lo(LIR_Address* addr);
98 Address as_Address_hi(LIR_Address* addr);
99
100 // debug information
101 void add_call_info(int pc_offset, CodeEmitInfo* cinfo);
102 void add_debug_info_for_branch(CodeEmitInfo* info);
103 void add_debug_info_for_div0(int pc_offset, CodeEmitInfo* cinfo);
104 void add_debug_info_for_div0_here(CodeEmitInfo* info);
105 ImplicitNullCheckStub* add_debug_info_for_null_check(int pc_offset, CodeEmitInfo* cinfo);
106 ImplicitNullCheckStub* add_debug_info_for_null_check_here(CodeEmitInfo* info);
107
108 void set_24bit_FPU();
109 void reset_FPU();
110 void fpop();
111 void fxch(int i);
112 void fld(int i);
113 void ffree(int i);
114
115 void breakpoint();
116 void push(LIR_Opr opr);
117 void pop(LIR_Opr opr);
118
119 // patching
120 void append_patching_stub(PatchingStub* stub);
121 void patching_epilog(PatchingStub* patch, LIR_PatchCode patch_code, Register obj, CodeEmitInfo* info);
122
123 void comp_op(LIR_Condition condition, LIR_Opr src, LIR_Opr result, LIR_Op2* op);
124
125 PatchingStub::PatchID patching_id(CodeEmitInfo* info);
126
127 public:
128 LIR_Assembler(Compilation* c);
129 ~LIR_Assembler();
130 C1_MacroAssembler* masm() const { return _masm; }
131 Compilation* compilation() const { return _compilation; }
132 ciMethod* method() const { return compilation()->method(); }
133
134 CodeOffsets* offsets() const { return _compilation->offsets(); }
135 int code_offset() const;
136 address pc() const;
137
138 int initial_frame_size_in_bytes() const;
139 int bang_size_in_bytes() const;
140
141 // test for constants which can be encoded directly in instructions
142 static bool is_small_constant(LIR_Opr opr);
143
144 static LIR_Opr receiverOpr();
145 static LIR_Opr osrBufferPointer();
146
147 // stubs
148 void emit_slow_case_stubs();
149 void emit_static_call_stub();
150 void append_code_stub(CodeStub* op);
151 void add_call_info_here(CodeEmitInfo* info) { add_call_info(code_offset(), info); }
152
153 // code patterns
154 int emit_exception_handler();
155 int emit_unwind_handler();
156 void emit_exception_entries(ExceptionInfoList* info_list);
157 int emit_deopt_handler();
158
159 void emit_code(BlockList* hir);
160 void emit_block(BlockBegin* block);
161 void emit_lir_list(LIR_List* list);
162
163 // any last minute peephole optimizations are performed here. In
164 // particular sparc uses this for delay slot filling.
165 void peephole(LIR_List* list);
166
167 void return_op(LIR_Opr result);
168
169 // returns offset of poll instruction
170 int safepoint_poll(LIR_Opr result, CodeEmitInfo* info);
171
172 void const2reg (LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info);
173 void const2stack(LIR_Opr src, LIR_Opr dest);
174 void const2mem (LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide);
175 void reg2stack (LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack);
176 void reg2reg (LIR_Opr src, LIR_Opr dest);
177 void reg2mem (LIR_Opr src, LIR_Opr dest, BasicType type,
178 LIR_PatchCode patch_code, CodeEmitInfo* info,
179 bool pop_fpu_stack, bool wide, bool unaligned);
180 void stack2reg (LIR_Opr src, LIR_Opr dest, BasicType type);
181 void stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type);
182 void mem2reg (LIR_Opr src, LIR_Opr dest, BasicType type,
183 LIR_PatchCode patch_code,
184 CodeEmitInfo* info, bool wide, bool unaligned);
185
186 void shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp);
187 void shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest);
188
189 void move_regs(Register from_reg, Register to_reg);
190 void swap_reg(Register a, Register b);
191
192 void emit_op0(LIR_Op0* op);
193 void emit_op1(LIR_Op1* op);
194 void emit_op2(LIR_Op2* op);
195 void emit_op3(LIR_Op3* op);
196 void emit_opBranch(LIR_OpBranch* op);
197 void emit_opLabel(LIR_OpLabel* op);
198 void emit_arraycopy(LIR_OpArrayCopy* op);
199 void emit_updatecrc32(LIR_OpUpdateCRC32* op);
200 void emit_opConvert(LIR_OpConvert* op);
201 void emit_alloc_obj(LIR_OpAllocObj* op);
202 void emit_alloc_array(LIR_OpAllocArray* op);
203 void emit_opTypeCheck(LIR_OpTypeCheck* op);
204 void emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null);
205 void emit_compare_and_swap(LIR_OpCompareAndSwap* op);
206 void emit_lock(LIR_OpLock* op);
207 void emit_call(LIR_OpJavaCall* op);
208 void emit_rtcall(LIR_OpRTCall* op);
209 void emit_profile_call(LIR_OpProfileCall* op);
210 void emit_profile_type(LIR_OpProfileType* op);
211 void emit_delay(LIR_OpDelay* op);
212
213 void arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack);
214 void arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info);
215 void intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op);
216#ifdef ASSERT
217 void emit_assert(LIR_OpAssert* op);
218#endif
219
220 void logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest);
221
222 void roundfp_op(LIR_Opr src, LIR_Opr tmp, LIR_Opr dest, bool pop_fpu_stack);
223 void move_op(LIR_Opr src, LIR_Opr result, BasicType type,
224 LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool unaligned, bool wide);
225 void volatile_move_op(LIR_Opr src, LIR_Opr result, BasicType type, CodeEmitInfo* info);
226 void comp_mem_op(LIR_Opr src, LIR_Opr result, BasicType type, CodeEmitInfo* info); // info set for null exceptions
227 void comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr result, LIR_Op2* op);
228 void cmove(LIR_Condition code, LIR_Opr left, LIR_Opr right, LIR_Opr result, BasicType type);
229
230 void call( LIR_OpJavaCall* op, relocInfo::relocType rtype);
231 void ic_call( LIR_OpJavaCall* op);
232 void vtable_call( LIR_OpJavaCall* op);
233
234 void osr_entry();
235
236 void build_frame();
237
238 void throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info);
239 void unwind_op(LIR_Opr exceptionOop);
240 void monitor_address(int monitor_ix, LIR_Opr dst);
241
242 void align_backward_branch_target();
243 void align_call(LIR_Code code);
244
245 void negate(LIR_Opr left, LIR_Opr dest, LIR_Opr tmp = LIR_OprFact::illegalOpr);
246 void leal(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code = lir_patch_none, CodeEmitInfo* info = NULL);
247
248 void rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info);
249
250 void membar();
251 void membar_acquire();
252 void membar_release();
253 void membar_loadload();
254 void membar_storestore();
255 void membar_loadstore();
256 void membar_storeload();
257 void on_spin_wait();
258 void get_thread(LIR_Opr result);
259
260 void verify_oop_map(CodeEmitInfo* info);
261
262 void atomic_op(LIR_Code code, LIR_Opr src, LIR_Opr data, LIR_Opr dest, LIR_Opr tmp);
263
264#include CPU_HEADER(c1_LIRAssembler)
265
266 public:
267
268 static int call_stub_size() {
269 if (UseAOT) {
270 return _call_stub_size + _call_aot_stub_size;
271 } else {
272 return _call_stub_size;
273 }
274 }
275
276 static int exception_handler_size() {
277 return _exception_handler_size;
278 }
279
280 static int deopt_handler_size() {
281 return _deopt_handler_size;
282 }
283};
284
285#endif // SHARE_C1_C1_LIRASSEMBLER_HPP
286