1 /*
2 * Copyright (c) 2000, 2021, 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
33 class Compilation;
34 class ScopeValue;
35 class BarrierSet;
36
37 class 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 breakpoint();
109 void push(LIR_Opr opr);
110 void pop(LIR_Opr opr);
111
112 // patching
113 void append_patching_stub(PatchingStub* stub);
114 void patching_epilog(PatchingStub* patch, LIR_PatchCode patch_code, Register obj, CodeEmitInfo* info);
115
116 void comp_op(LIR_Condition condition, LIR_Opr src, LIR_Opr result, LIR_Op2* op);
117
118 PatchingStub::PatchID patching_id(CodeEmitInfo* info);
119
120 public:
121 LIR_Assembler(Compilation* c);
122 ~LIR_Assembler();
123 C1_MacroAssembler* masm() const { return _masm; }
124 Compilation* compilation() const { return _compilation; }
125 ciMethod* method() const { return compilation()->method(); }
126
127 CodeOffsets* offsets() const { return _compilation->offsets(); }
128 int code_offset() const;
129 address pc() const;
130
131 int initial_frame_size_in_bytes() const;
132 int bang_size_in_bytes() const;
133
134 // test for constants which can be encoded directly in instructions
135 static bool is_small_constant(LIR_Opr opr);
136
137 static LIR_Opr receiverOpr();
138 static LIR_Opr osrBufferPointer();
139
140 // stubs
141 void emit_slow_case_stubs();
142 void emit_static_call_stub();
143 void append_code_stub(CodeStub* op);
144 void add_call_info_here(CodeEmitInfo* info) { add_call_info(code_offset(), info); }
145
146 // code patterns
147 int emit_exception_handler();
148 int emit_unwind_handler();
149 void emit_exception_entries(ExceptionInfoList* info_list);
150 int emit_deopt_handler();
151
152 void emit_code(BlockList* hir);
153 void emit_block(BlockBegin* block);
154 void emit_lir_list(LIR_List* list);
155
156 // any last minute peephole optimizations are performed here. In
157 // particular sparc uses this for delay slot filling.
158 void peephole(LIR_List* list);
159
160 void return_op(LIR_Opr result, C1SafepointPollStub* code_stub);
161
162 // returns offset of poll instruction
163 int safepoint_poll(LIR_Opr result, CodeEmitInfo* info);
164
165 void const2reg (LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info);
166 void const2stack(LIR_Opr src, LIR_Opr dest);
167 void const2mem (LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide);
168 void reg2stack (LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack);
169 void reg2reg (LIR_Opr src, LIR_Opr dest);
170 void reg2mem (LIR_Opr src, LIR_Opr dest, BasicType type,
171 LIR_PatchCode patch_code, CodeEmitInfo* info,
172 bool pop_fpu_stack, bool wide, bool unaligned);
173 void stack2reg (LIR_Opr src, LIR_Opr dest, BasicType type);
174 void stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type);
175 void mem2reg (LIR_Opr src, LIR_Opr dest, BasicType type,
176 LIR_PatchCode patch_code,
177 CodeEmitInfo* info, bool wide, bool unaligned);
178
179 void shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp);
180 void shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest);
181
182 void move_regs(Register from_reg, Register to_reg);
183 void swap_reg(Register a, Register b);
184
185 void emit_op0(LIR_Op0* op);
186 void emit_op1(LIR_Op1* op);
187 void emit_op2(LIR_Op2* op);
188 void emit_op3(LIR_Op3* op);
189 void emit_opBranch(LIR_OpBranch* op);
190 void emit_opLabel(LIR_OpLabel* op);
191 void emit_arraycopy(LIR_OpArrayCopy* op);
192 void emit_updatecrc32(LIR_OpUpdateCRC32* op);
193 void emit_opConvert(LIR_OpConvert* op);
194 void emit_alloc_obj(LIR_OpAllocObj* op);
195 void emit_alloc_array(LIR_OpAllocArray* op);
196 void emit_opTypeCheck(LIR_OpTypeCheck* op);
197 void emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null);
198 void emit_compare_and_swap(LIR_OpCompareAndSwap* op);
199 void emit_lock(LIR_OpLock* op);
200 void emit_call(LIR_OpJavaCall* op);
201 void emit_rtcall(LIR_OpRTCall* op);
202 void emit_profile_call(LIR_OpProfileCall* op);
203 void emit_profile_type(LIR_OpProfileType* op);
204 void emit_delay(LIR_OpDelay* op);
205
206 void arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack);
207 void arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info);
208 void intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op);
209 #ifdef ASSERT
210 void emit_assert(LIR_OpAssert* op);
211 #endif
212
213 void logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest);
214
215 void roundfp_op(LIR_Opr src, LIR_Opr tmp, LIR_Opr dest, bool pop_fpu_stack);
216 void move_op(LIR_Opr src, LIR_Opr result, BasicType type,
217 LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool unaligned, bool wide);
218 void volatile_move_op(LIR_Opr src, LIR_Opr result, BasicType type, CodeEmitInfo* info);
219 void comp_mem_op(LIR_Opr src, LIR_Opr result, BasicType type, CodeEmitInfo* info); // info set for null exceptions
220 void comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr result, LIR_Op2* op);
221 void cmove(LIR_Condition code, LIR_Opr left, LIR_Opr right, LIR_Opr result, BasicType type);
222
223 void call( LIR_OpJavaCall* op, relocInfo::relocType rtype);
224 void ic_call( LIR_OpJavaCall* op);
225 void vtable_call( LIR_OpJavaCall* op);
226
227 void osr_entry();
228
229 void build_frame();
230
231 void throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info);
232 void unwind_op(LIR_Opr exceptionOop);
233 void monitor_address(int monitor_ix, LIR_Opr dst);
234
235 void align_backward_branch_target();
236 void align_call(LIR_Code code);
237
238 void negate(LIR_Opr left, LIR_Opr dest, LIR_Opr tmp = LIR_OprFact::illegalOpr);
239 void leal(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code = lir_patch_none, CodeEmitInfo* info = NULL);
240
241 void rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info);
242
243 void membar();
244 void membar_acquire();
245 void membar_release();
246 void membar_loadload();
247 void membar_storestore();
248 void membar_loadstore();
249 void membar_storeload();
250 void on_spin_wait();
251 void get_thread(LIR_Opr result);
252
253 void verify_oop_map(CodeEmitInfo* info);
254
255 void atomic_op(LIR_Code code, LIR_Opr src, LIR_Opr data, LIR_Opr dest, LIR_Opr tmp);
256
257 #include CPU_HEADER(c1_LIRAssembler)
258
259 public:
260
261 static int call_stub_size() {
262 return _call_stub_size;
263 }
264
265 static int exception_handler_size() {
266 return _exception_handler_size;
267 }
268
269 static int deopt_handler_size() {
270 return _deopt_handler_size;
271 }
272 };
273
274 #endif // SHARE_C1_C1_LIRASSEMBLER_HPP