1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2020-2023. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#include "beam_asm.hpp"
extern "C"
{
#include "beam_common.h"
}
void BeamGlobalAssembler::emit_dispatch_return() {
#ifdef NATIVE_ERLANG_STACK
/* ARG3 should contain the place to jump to. */
a.pop(ARG3);
#else
/* ARG3 already contains the place to jump to. */
#endif
a.mov(x86::qword_ptr(c_p, offsetof(Process, current)), 0);
a.mov(x86::qword_ptr(c_p, offsetof(Process, arity)), 1);
a.jmp(labels[context_switch_simplified]);
}
void BeamModuleAssembler::emit_return() {
#ifdef JIT_HARD_DEBUG
/* Validate return address and {x,0} */
emit_validate(ArgWord(1));
#endif
emit_leave_frame();
#if !defined(NATIVE_ERLANG_STACK)
a.mov(ARG3, getCPRef());
a.mov(getCPRef(), imm(NIL));
#endif
/* The reduction test is kept in module code because moving it to a shared
* fragment caused major performance regressions in dialyzer. */
a.dec(FCALLS);
a.jl(resolve_fragment(ga->get_dispatch_return()));
#ifdef NATIVE_ERLANG_STACK
a.ret();
#else
a.jmp(ARG3);
#endif
}
void BeamModuleAssembler::emit_i_call(const ArgLabel &CallDest) {
erlang_call(resolve_beam_label(CallDest), RET);
}
void BeamModuleAssembler::emit_i_call_last(const ArgLabel &CallDest,
const ArgWord &Deallocate) {
emit_deallocate(Deallocate);
emit_i_call_only(CallDest);
}
void BeamModuleAssembler::emit_i_call_only(const ArgLabel &CallDest) {
emit_leave_frame();
a.jmp(resolve_beam_label(CallDest));
}
/* Handles save_calls. Export entry is in RET.
*
* When the active code index is ERTS_SAVE_CALLS_CODE_IX, all remote calls will
* land here. */
void BeamGlobalAssembler::emit_dispatch_save_calls() {
a.mov(TMP_MEM1q, RET);
emit_enter_runtime();
a.mov(ARG1, c_p);
a.mov(ARG2, RET);
runtime_call<2>(save_calls);
emit_leave_runtime();
a.mov(RET, TMP_MEM1q);
/* Keep going with the actual code index. */
a.mov(ARG1, imm(&the_active_code_index));
a.mov(ARG1d, x86::dword_ptr(ARG1));
a.jmp(emit_setup_dispatchable_call(RET, ARG1));
}
void BeamModuleAssembler::emit_i_call_ext(const ArgExport &Exp) {
mov_arg(RET, Exp);
x86::Mem destination = emit_setup_dispatchable_call(RET);
erlang_call(destination, ARG1);
}
void BeamModuleAssembler::emit_i_call_ext_only(const ArgExport &Exp) {
mov_arg(RET, Exp);
x86::Mem destination = emit_setup_dispatchable_call(RET);
emit_leave_frame();
a.jmp(destination);
}
void BeamModuleAssembler::emit_i_call_ext_last(const ArgExport &Exp,
const ArgWord &Deallocate) {
emit_deallocate(Deallocate);
mov_arg(RET, Exp);
x86::Mem destination = emit_setup_dispatchable_call(RET);
emit_leave_frame();
a.jmp(destination);
}
static ErtsCodeMFA apply3_mfa = {am_erlang, am_apply, 3};
x86::Mem BeamModuleAssembler::emit_variable_apply(bool includeI) {
Label dispatch = a.newLabel(), entry = a.newLabel();
align_erlang_cp();
a.bind(entry);
emit_enter_runtime<Update::eReductions | Update::eStack | Update::eHeap>();
a.mov(ARG1, c_p);
load_x_reg_array(ARG2);
if (includeI) {
a.lea(ARG3, x86::qword_ptr(entry));
} else {
mov_imm(ARG3, 0);
}
mov_imm(ARG4, 0);
runtime_call<4>(apply);
emit_leave_runtime<Update::eReductions | Update::eStack | Update::eHeap>();
a.test(RET, RET);
a.short_().jne(dispatch);
emit_raise_exception(entry, &apply3_mfa);
a.bind(dispatch);
return emit_setup_dispatchable_call(RET);
}
void BeamModuleAssembler::emit_i_apply() {
x86::Mem dest = emit_variable_apply(false);
erlang_call(dest, ARG1);
}
void BeamModuleAssembler::emit_i_apply_last(const ArgWord &Deallocate) {
emit_deallocate(Deallocate);
emit_i_apply_only();
}
void BeamModuleAssembler::emit_i_apply_only() {
x86::Mem dest = emit_variable_apply(true);
emit_leave_frame();
a.jmp(dest);
}
x86::Mem BeamModuleAssembler::emit_fixed_apply(const ArgWord &Arity,
bool includeI) {
Label dispatch = a.newLabel(), entry = a.newLabel();
align_erlang_cp();
a.bind(entry);
mov_arg(ARG3, Arity);
emit_enter_runtime<Update::eReductions | Update::eStack | Update::eHeap>();
a.mov(ARG1, c_p);
load_x_reg_array(ARG2);
if (includeI) {
a.lea(ARG4, x86::qword_ptr(entry));
} else {
mov_imm(ARG4, 0);
}
mov_imm(ARG5, 0);
runtime_call<5>(fixed_apply);
emit_leave_runtime<Update::eReductions | Update::eStack | Update::eHeap>();
a.test(RET, RET);
a.short_().jne(dispatch);
emit_raise_exception(entry, &apply3_mfa);
a.bind(dispatch);
return emit_setup_dispatchable_call(RET);
}
void BeamModuleAssembler::emit_apply(const ArgWord &Arity) {
x86::Mem dest = emit_fixed_apply(Arity, false);
erlang_call(dest, ARG1);
}
void BeamModuleAssembler::emit_apply_last(const ArgWord &Arity,
const ArgWord &Deallocate) {
emit_deallocate(Deallocate);
x86::Mem dest = emit_fixed_apply(Arity, true);
emit_leave_frame();
a.jmp(dest);
}
|
