Ruby 2.7.6p219 (2022-04-12 revision c9c2245c0a25176072e02db9254f0e0c84c805cd)
vm_exec.h
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1/**********************************************************************
2
3 vm.h -
4
5 $Author$
6 created at: 04/01/01 16:56:59 JST
7
8 Copyright (C) 2004-2007 Koichi Sasada
9
10**********************************************************************/
11
12#ifndef RUBY_VM_EXEC_H
13#define RUBY_VM_EXEC_H
14
15typedef long OFFSET;
16typedef unsigned long lindex_t;
17typedef VALUE GENTRY;
18typedef rb_iseq_t *ISEQ;
19
20#if VMDEBUG > 0
21#define debugs printf
22#define DEBUG_ENTER_INSN(insn) \
23 rb_vmdebug_debug_print_pre(ec, GET_CFP(), GET_PC());
24
25#if OPT_STACK_CACHING
26#define SC_REGS() , reg_a, reg_b
27#else
28#define SC_REGS()
29#endif
30
31#define DEBUG_END_INSN() \
32 rb_vmdebug_debug_print_post(ec, GET_CFP() SC_REGS());
33
34#else
35
36#define debugs
37#define DEBUG_ENTER_INSN(insn)
38#define DEBUG_END_INSN()
39#endif
40
41#define throwdebug if(0)printf
42/* #define throwdebug printf */
43
44/************************************************/
45#if defined(DISPATCH_XXX)
46error !
47/************************************************/
48#elif OPT_CALL_THREADED_CODE
49
50#define LABEL(x) insn_func_##x
51#define ELABEL(x)
52#define LABEL_PTR(x) &LABEL(x)
53
54#define INSN_ENTRY(insn) \
55 static rb_control_frame_t * \
56 FUNC_FASTCALL(LABEL(insn))(rb_execution_context_t *ec, rb_control_frame_t *reg_cfp) {
57
58#define END_INSN(insn) return reg_cfp;}
59
60#define NEXT_INSN() return reg_cfp;
61
62#define START_OF_ORIGINAL_INSN(x) /* ignore */
63#define DISPATCH_ORIGINAL_INSN(x) return LABEL(x)(ec, reg_cfp);
64
65/************************************************/
66#elif OPT_TOKEN_THREADED_CODE || OPT_DIRECT_THREADED_CODE
67/* threaded code with gcc */
68
69#define LABEL(x) INSN_LABEL_##x
70#define ELABEL(x) INSN_ELABEL_##x
71#define LABEL_PTR(x) RB_GNUC_EXTENSION(&&LABEL(x))
72
73#define INSN_ENTRY_SIG(insn) \
74 if (0) fprintf(stderr, "exec: %s@(%"PRIdPTRDIFF", %"PRIdPTRDIFF")@%s:%u\n", #insn, \
75 (reg_pc - reg_cfp->iseq->body->iseq_encoded), \
76 (reg_cfp->pc - reg_cfp->iseq->body->iseq_encoded), \
77 RSTRING_PTR(rb_iseq_path(reg_cfp->iseq)), \
78 rb_iseq_line_no(reg_cfp->iseq, reg_pc - reg_cfp->iseq->body->iseq_encoded));
79
80#define INSN_DISPATCH_SIG(insn)
81
82#define INSN_ENTRY(insn) \
83 LABEL(insn): \
84 INSN_ENTRY_SIG(insn); \
85
86/**********************************/
87#if OPT_DIRECT_THREADED_CODE
88
89/* for GCC 3.4.x */
90#define TC_DISPATCH(insn) \
91 INSN_DISPATCH_SIG(insn); \
92 RB_GNUC_EXTENSION_BLOCK(goto *(void const *)GET_CURRENT_INSN()); \
93 ;
94
95#else
96/* token threaded code */
97
98/* dispatcher */
99#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && __GNUC__ == 3
100#define DISPATCH_ARCH_DEPEND_WAY(addr) \
101 __asm__ __volatile__("jmp *%0;\t# -- inserted by vm.h\t[length = 2]" : : "r" (addr))
102
103#else
104#define DISPATCH_ARCH_DEPEND_WAY(addr) \
105 /* do nothing */
106#endif
107#define TC_DISPATCH(insn) \
108 DISPATCH_ARCH_DEPEND_WAY(insns_address_table[GET_CURRENT_INSN()]); \
109 INSN_DISPATCH_SIG(insn); \
110 RB_GNUC_EXTENSION_BLOCK(goto *insns_address_table[GET_CURRENT_INSN()]); \
111 rb_bug("tc error");
112
113#endif /* OPT_DIRECT_THREADED_CODE */
114
115#define END_INSN(insn) \
116 DEBUG_END_INSN(); \
117 TC_DISPATCH(insn);
118
119#define INSN_DISPATCH() \
120 TC_DISPATCH(__START__) \
121 {
122
123#define END_INSNS_DISPATCH() \
124 rb_bug("unknown insn: %"PRIdVALUE, GET_CURRENT_INSN()); \
125 } /* end of while loop */ \
126
127#define NEXT_INSN() TC_DISPATCH(__NEXT_INSN__)
128
129#define START_OF_ORIGINAL_INSN(x) start_of_##x:
130#define DISPATCH_ORIGINAL_INSN(x) goto start_of_##x;
131
132/************************************************/
133#else /* no threaded code */
134/* most common method */
135
136#define INSN_ENTRY(insn) \
137case BIN(insn):
138
139#define END_INSN(insn) \
140 DEBUG_END_INSN(); \
141 break;
142
143#define INSN_DISPATCH() \
144 while (1) { \
145 switch (GET_CURRENT_INSN()) {
146
147#define END_INSNS_DISPATCH() \
148default: \
149 SDR(); \
150 rb_bug("unknown insn: %ld", GET_CURRENT_INSN()); \
151 } /* end of switch */ \
152 } /* end of while loop */ \
153
154#define NEXT_INSN() goto first
155
156#define START_OF_ORIGINAL_INSN(x) start_of_##x:
157#define DISPATCH_ORIGINAL_INSN(x) goto start_of_##x;
158
159#endif
160
161#define VM_SP_CNT(ec, sp) ((sp) - (ec)->vm_stack)
162
163#ifdef MJIT_HEADER
164#define THROW_EXCEPTION(exc) do { \
165 ec->errinfo = (VALUE)(exc); \
166 EC_JUMP_TAG(ec, ec->tag->state); \
167} while (0)
168#else
169#if OPT_CALL_THREADED_CODE
170#define THROW_EXCEPTION(exc) do { \
171 ec->errinfo = (VALUE)(exc); \
172 return 0; \
173} while (0)
174#else
175#define THROW_EXCEPTION(exc) return (VALUE)(exc)
176#endif
177#endif
178
179#define SCREG(r) (reg_##r)
180
181#define VM_DEBUG_STACKOVERFLOW 0
182
183#if VM_DEBUG_STACKOVERFLOW
184#define CHECK_VM_STACK_OVERFLOW_FOR_INSN(cfp, margin) \
185 WHEN_VM_STACK_OVERFLOWED(cfp, (cfp)->sp, margin) vm_stack_overflow_for_insn()
186#else
187#define CHECK_VM_STACK_OVERFLOW_FOR_INSN(cfp, margin)
188#endif
189
190#define INSN_LABEL2(insn, name) INSN_LABEL_ ## insn ## _ ## name
191#define INSN_LABEL(x) INSN_LABEL2(NAME_OF_CURRENT_INSN, x)
192
193#endif /* RUBY_VM_EXEC_H */
const rb_iseq_t const char * error
unsigned long VALUE
unsigned long lindex_t
Definition: vm_exec.h:16
long OFFSET
Definition: vm_exec.h:15
VALUE GENTRY
Definition: vm_exec.h:17
rb_iseq_t * ISEQ
Definition: vm_exec.h:18