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
|
/* ************************************************************************ */
/* */
/* Neko Virtual Machine */
/* Copyright (c)2005 Motion-Twin */
/* */
/* This library is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU Lesser General Public */
/* License as published by the Free Software Foundation; either */
/* version 2.1 of the License, or (at your option) any later version. */
/* */
/* This library is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
/* Lesser General Public License or the LICENSE file for more details. */
/* */
/* ************************************************************************ */
#include <string.h>
#include "neko.h"
#include "objtable.h"
#include "vm.h"
#include "neko_mod.h"
#define MAXCALLS 350
typedef value (*c_prim0)();
typedef value (*c_prim1)(value);
typedef value (*c_prim2)(value,value);
typedef value (*c_prim3)(value,value,value);
typedef value (*c_prim4)(value,value,value,value);
typedef value (*c_prim5)(value,value,value,value,value);
typedef value (*c_primN)(value*,int);
typedef value (*jit_prim)( neko_vm *, void *, value, neko_module * );
extern void neko_setup_trap( neko_vm *vm );
extern void neko_process_trap( neko_vm *vm );
extern int neko_stack_expand( int_val *sp, int_val *csp, neko_vm *vm );
extern char *jit_boot_seq;
EXTERN value val_callEx( value vthis, value f, value *args, int nargs, value *exc ) {
neko_vm *vm = NEKO_VM();
value old_this = vm->vthis;
value old_env = vm->env;
value ret = val_null;
jmp_buf oldjmp;
if( vthis != NULL )
vm->vthis = vthis;
if( exc ) {
memcpy(&oldjmp,&vm->start,sizeof(jmp_buf));
if( setjmp(vm->start) ) {
*exc = vm->vthis;
neko_process_trap(vm);
vm->vthis = old_this;
vm->env = old_env;
memcpy(&vm->start,&oldjmp,sizeof(jmp_buf));
return val_null;
}
neko_setup_trap(vm);
}
if( (unsigned)((int_val)&vm) < (unsigned)(int_val)vm->c_stack_max )
val_throw(alloc_string("C Stack Overflow"));
if( val_is_int(f) )
val_throw(alloc_string("Invalid call"));
if( val_tag(f) == VAL_PRIMITIVE ) {
vm->env = ((vfunction *)f)->env;
if( nargs == ((vfunction*)f)->nargs ) {
if( nargs > CALL_MAX_ARGS )
failure("Too many arguments for a call");
switch( nargs ) {
case 0:
ret = ((c_prim0)((vfunction*)f)->addr)();
break;
case 1:
ret = ((c_prim1)((vfunction*)f)->addr)(args[0]);
break;
case 2:
ret = ((c_prim2)((vfunction*)f)->addr)(args[0],args[1]);
break;
case 3:
ret = ((c_prim3)((vfunction*)f)->addr)(args[0],args[1],args[2]);
break;
case 4:
ret = ((c_prim4)((vfunction*)f)->addr)(args[0],args[1],args[2],args[3]);
break;
case 5:
ret = ((c_prim5)((vfunction*)f)->addr)(args[0],args[1],args[2],args[3],args[4]);
break;
}
} else if( ((vfunction*)f)->nargs == -1 )
ret = (value)((c_primN)((vfunction*)f)->addr)(args,nargs);
else
val_throw(alloc_string("Invalid call"));
if( ret == NULL )
val_throw( (value)((vfunction*)f)->module );
} else if( (val_tag(f)&7) == VAL_FUNCTION ) {
if( nargs == ((vfunction*)f)->nargs ) {
int n;
if( vm->csp + 4 >= vm->sp - nargs && !neko_stack_expand(vm->sp,vm->csp,vm) ) {
if( exc ) {
neko_process_trap(vm);
memcpy(&vm->start,&oldjmp,sizeof(jmp_buf));
}
failure("Stack Overflow");
} else {
for(n=0;n<nargs;n++)
*--vm->sp = (int_val)args[n];
vm->env = ((vfunction*)f)->env;
if( val_tag(f) == VAL_FUNCTION ) {
*++vm->csp = (int_val)callback_return;
*++vm->csp = 0;
*++vm->csp = 0;
*++vm->csp = 0;
ret = neko_interp(vm,((vfunction*)f)->module,(int_val)val_null,(int_val*)((vfunction*)f)->addr);
} else {
neko_module *m = (neko_module*)((vfunction*)f)->module;
ret = ((jit_prim)jit_boot_seq)(vm,((vfunction*)f)->addr,val_null,m);
}
}
}
else
val_throw(alloc_string("Invalid call"));
} else
val_throw(alloc_string("Invalid call"));
if( exc ) {
neko_process_trap(vm);
memcpy(&vm->start,&oldjmp,sizeof(jmp_buf));
}
vm->vthis = old_this;
vm->env = old_env;
return ret;
}
EXTERN value val_callN( value f, value *args, int nargs ) {
return val_callEx(NULL,f,args,nargs,NULL);
}
EXTERN value val_ocallN( value o, field f, value *args, int nargs ) {
return val_callEx(o,val_field(o,f),args,nargs,NULL);
}
EXTERN value val_call0( value f ) {
return val_callN(f,NULL,0);
}
EXTERN value val_call1( value f, value v ) {
return val_callN(f,&v,1);
}
EXTERN value val_call2( value f, value v1, value v2 ) {
value args[2] = { v1, v2 };
return val_callN(f,args,2);
}
EXTERN value val_call3( value f, value arg1, value arg2, value arg3 ) {
value args[3] = { arg1, arg2, arg3 };
return val_callN(f,args,3);
}
EXTERN value val_ocall0( value o, field f ) {
return val_ocallN(o,f,NULL,0);
}
EXTERN value val_ocall1( value o, field f, value arg ) {
return val_ocallN(o,f,&arg,1);
}
EXTERN value val_ocall2( value o, field f, value arg1, value arg2 ) {
value args[2] = { arg1, arg2 };
return val_ocallN(o,f,args,2);
}
EXTERN value val_this() {
return (value)NEKO_VM()->vthis;
}
/* ************************************************************************ */
|
