1 /* code.h
2 
3    Routines for handling Flash2 AVM2 ABC Actionscript
4 
5    Extension module for the rfxswf library.
6    Part of the swftools package.
7 
8    Copyright (c) 2008 Matthias Kramm <kramm@quiss.org>
9 
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 2 of the License, or
13    (at your option) any later version.
14 
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
19 
20    You should have received a copy of the GNU General Public License
21    along with this program; if not, write to the Free Software
22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
23 
24 #ifndef __abc_code_h__
25 #define __abc_code_h__
26 
27 #include "../q.h"
28 
29 DECLARE(code);
30 DECLARE_LIST(code);
31 DECLARE(codestats);
32 DECLARE(codelookup);
33 DECLARE(lookupswitch);
34 
35 
36 #include "abc.h"
37 
38 typedef struct _opcode
39 {
40     unsigned char opcode;
41     char*name;
42     char*params;
43 
44     int stack_minus;
45     int stack_plus;
46     int scope_stack_plus;
47     int flags;
48 } opcode_t;
49 
50 struct _code {
51     void*data[2];
52     code_t*next;
53     code_t*prev;
54 
55     code_t*branch;
56     int pos; //used during code path evaluation
57 
58     U8 opcode;
59 };
60 
61 struct _lookupswitch {
62     code_t*def;
63     code_list_t*targets;
64 };
65 
66 #define FLAGS_ACTIVATION 0x02
67 #define FLAGS_SET_DXNS 0x40
68 struct _codestats {
69     int max_stack;
70     int local_count;
71     int max_scope_depth;
72     int flags;
73 };
74 
75 struct _codelookup {
76     code_t**bytepos;
77     int len;
78 };
79 
80 code_t*code_dup(code_t*c);
81 
82 code_t*add_opcode(code_t*atag, U8 op);
83 
84 code_t*code_parse(TAG*tag, int len, abc_file_t*file, pool_t*pool, codelookup_t**codelookup);
85 int        code_dump(code_t*c);
86 int        code_dump2(code_t*c, abc_exception_list_t*exceptions, abc_file_t*file, char*prefix, FILE*fo);
87 void       code_write(TAG*tag, code_t*code, pool_t*pool, abc_file_t*file);
88 void       code_free(code_t*c);
89 code_t* code_atposition(codelookup_t*l, int pos);
90 void codelookup_free(codelookup_t*codelookup);
91 
92 code_t*code_cutlast(code_t*c);
93 
94 codestats_t* code_get_statistics(code_t*code, abc_exception_list_t*exceptions);
95 
96 void codestats_print(codestats_t*s);
97 void codestats_free(codestats_t*s);
98 
99 code_t* code_start(code_t*c);
100 
101 code_t* code_append(code_t*code, code_t*toappend);
102 
103 code_t* cut_last_push(code_t*_c);
104 
105 char is_getlocal(code_t*c);
106 
107 #define code_new() (0)
108 
109 #endif
110