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
|
/* -*-c-*- */
/**********************************************************************
vm_exec.c -
$Author$
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#include <math.h>
#if VM_COLLECT_USAGE_DETAILS
static void vm_analysis_insn(int insn);
#endif
MAYBE_UNUSED(static void vm_insns_counter_count_insn(int insn));
#if USE_INSNS_COUNTER
static size_t rb_insns_counter[VM_INSTRUCTION_SIZE];
static void
vm_insns_counter_count_insn(int insn)
{
rb_insns_counter[insn]++;
}
__attribute__((destructor))
static void
vm_insns_counter_show_results_at_exit(void)
{
int insn_end = (ruby_vm_event_enabled_global_flags & ISEQ_TRACE_EVENTS)
? VM_INSTRUCTION_SIZE : VM_INSTRUCTION_SIZE / 2;
size_t total = 0;
for (int insn = 0; insn < insn_end; insn++)
total += rb_insns_counter[insn];
for (int insn = 0; insn < insn_end; insn++) {
fprintf(stderr, "[RUBY_INSNS_COUNTER]\t%-32s%'12"PRIuSIZE" (%4.1f%%)\n",
insn_name(insn), rb_insns_counter[insn],
100.0 * rb_insns_counter[insn] / total);
}
}
#else
static void vm_insns_counter_count_insn(int insn) {}
#endif
#if VMDEBUG > 0
#define DECL_SC_REG(type, r, reg) register type reg_##r
#elif defined(__GNUC__) && defined(__x86_64__)
#define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("r" reg)
#elif defined(__GNUC__) && defined(__i386__)
#define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("e" reg)
#elif defined(__GNUC__) && defined(__powerpc64__)
#define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("r" reg)
#elif defined(__GNUC__) && defined(__aarch64__)
#define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("x" reg)
#else
#define DECL_SC_REG(type, r, reg) register type reg_##r
#endif
/* #define DECL_SC_REG(r, reg) VALUE reg_##r */
#if !OPT_CALL_THREADED_CODE
static VALUE
vm_exec_core(rb_execution_context_t *ec, VALUE initial)
{
#if OPT_STACK_CACHING
#if 0
#elif __GNUC__ && __x86_64__
DECL_SC_REG(VALUE, a, "12");
DECL_SC_REG(VALUE, b, "13");
#else
register VALUE reg_a;
register VALUE reg_b;
#endif
#endif
#if defined(__GNUC__) && defined(__i386__)
DECL_SC_REG(const VALUE *, pc, "di");
DECL_SC_REG(rb_control_frame_t *, cfp, "si");
#define USE_MACHINE_REGS 1
#elif defined(__GNUC__) && defined(__x86_64__)
DECL_SC_REG(const VALUE *, pc, "14");
DECL_SC_REG(rb_control_frame_t *, cfp, "15");
#define USE_MACHINE_REGS 1
#elif defined(__GNUC__) && defined(__powerpc64__)
DECL_SC_REG(const VALUE *, pc, "14");
DECL_SC_REG(rb_control_frame_t *, cfp, "15");
#define USE_MACHINE_REGS 1
#elif defined(__GNUC__) && defined(__aarch64__)
DECL_SC_REG(const VALUE *, pc, "19");
DECL_SC_REG(rb_control_frame_t *, cfp, "20");
#define USE_MACHINE_REGS 1
#else
register rb_control_frame_t *reg_cfp;
const VALUE *reg_pc;
#define USE_MACHINE_REGS 0
#endif
#if USE_MACHINE_REGS
#undef RESTORE_REGS
#define RESTORE_REGS() \
{ \
VM_REG_CFP = ec->cfp; \
reg_pc = reg_cfp->pc; \
}
#undef VM_REG_PC
#define VM_REG_PC reg_pc
#undef GET_PC
#define GET_PC() (reg_pc)
#undef SET_PC
#define SET_PC(x) (reg_cfp->pc = VM_REG_PC = (x))
#endif
#if OPT_TOKEN_THREADED_CODE || OPT_DIRECT_THREADED_CODE
#include "vmtc.inc"
if (UNLIKELY(ec == 0)) {
return (VALUE)insns_address_table;
}
#endif
reg_cfp = ec->cfp;
reg_pc = reg_cfp->pc;
#if OPT_STACK_CACHING
reg_a = initial;
reg_b = 0;
#endif
first:
INSN_DISPATCH();
/*****************/
#include "vm.inc"
/*****************/
END_INSNS_DISPATCH();
/* unreachable */
rb_bug("vm_eval: unreachable");
goto first;
}
const void **
rb_vm_get_insns_address_table(void)
{
return (const void **)vm_exec_core(0, 0);
}
#else /* OPT_CALL_THREADED_CODE */
#include "vm.inc"
#include "vmtc.inc"
const void **
rb_vm_get_insns_address_table(void)
{
return (const void **)insns_address_table;
}
static VALUE
vm_exec_core(rb_execution_context_t *ec, VALUE initial)
{
register rb_control_frame_t *reg_cfp = ec->cfp;
rb_thread_t *th;
while (1) {
reg_cfp = ((rb_insn_func_t) (*GET_PC()))(ec, reg_cfp);
if (UNLIKELY(reg_cfp == 0)) {
break;
}
}
if ((th = rb_ec_thread_ptr(ec))->retval != Qundef) {
VALUE ret = th->retval;
th->retval = Qundef;
return ret;
}
else {
VALUE err = ec->errinfo;
ec->errinfo = Qnil;
return err;
}
}
#endif
|
