Line data Source code
1 : /* src/vm/jit/reg.hpp - register allocator header
2 :
3 : Copyright (C) 1996-2014
4 : CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
5 :
6 : This file is part of CACAO.
7 :
8 : This program is free software; you can redistribute it and/or
9 : modify it under the terms of the GNU General Public License as
10 : published by the Free Software Foundation; either version 2, or (at
11 : your option) any later version.
12 :
13 : This program is distributed in the hope that it will be useful, but
14 : WITHOUT ANY WARRANTY; without even the implied warranty of
15 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 : General Public License for more details.
17 :
18 : You should have received a copy of the GNU General Public License
19 : along with this program; if not, write to the Free Software
20 : Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 : 02110-1301, USA.
22 :
23 : */
24 :
25 :
26 : #ifndef REG_HPP_
27 : #define REG_HPP_ 1
28 :
29 : /* forward typedefs ***********************************************************/
30 :
31 : #include "config.h"
32 : #include "vm/types.hpp"
33 :
34 : #include "arch.hpp"
35 :
36 : #include "vm/jit/verify/typeinfo.hpp"
37 :
38 : struct basicblock;
39 : struct jitdata;
40 :
41 : /************************* pseudo variable structure **************************/
42 :
43 : struct varinfo {
44 : Type type; /* basic type of variable */
45 : s4 flags; /* flags (SAVED, INMEMORY) */
46 : union {
47 : s4 regoff; /* register number or memory offset */
48 : s4 i;
49 : s8 l;
50 : float f;
51 : double d;
52 : basicblock *retaddr;
53 : s4 ii[2];
54 : } vv;
55 : #if defined(ENABLE_VERIFIER)
56 : typeinfo_t typeinfo; /* type info for reference types */
57 :
58 15 : bool is_returnaddress() const { return type == TYPE_RET && typeinfo.is_primitive(); }
59 413174 : bool is_reference() const { return type == TYPE_ADR && typeinfo.is_reference(); }
60 : #endif
61 : };
62 :
63 : typedef struct varinfo varinfo5[5];
64 :
65 :
66 : struct registerdata {
67 : int intreg_ret; /* register to return integer values */
68 : int fltreg_ret; /* register for return float values */
69 :
70 : int *tmpintregs; /* scratch integer registers */
71 : int *savintregs; /* saved integer registers */
72 : int *tmpfltregs; /* scratch float registers */
73 : int *savfltregs; /* saved float registers */
74 : int *freeargintregs; /* free argument integer registers */
75 : int *freetmpintregs; /* free scratch integer registers */
76 : int *freesavintregs; /* free saved integer registers */
77 : int *freeargfltregs; /* free argument float registers */
78 : int *freetmpfltregs; /* free scratch float registers */
79 : int *freesavfltregs; /* free saved float registers */
80 :
81 : int *freemem; /* free scratch memory */
82 : int freememtop; /* free memory count */
83 :
84 : int memuse; /* used memory count */
85 :
86 : int argintreguse; /* used argument integer register count */
87 : int tmpintreguse; /* used scratch integer register count */
88 : int savintreguse; /* used saved integer register count */
89 : int argfltreguse; /* used argument float register count */
90 : int tmpfltreguse; /* used scratch float register count */
91 : int savfltreguse; /* used saved float register count */
92 :
93 : int freearginttop; /* free argument integer register count */
94 : int freeargflttop; /* free argument float register count */
95 : int freetmpinttop; /* free scratch integer register count */
96 : int freesavinttop; /* free saved integer register count */
97 : int freetmpflttop; /* free scratch float register count */
98 : int freesavflttop; /* free saved float register count */
99 :
100 : int *intusedinout; /* is this int register uses as INOUT? */
101 : int *fltusedinout; /* is this flt register uses as INOUT? */
102 : int *regisoutvar; /* true if reg. is outvar of this block */
103 : int *regcopycount; /* counts copies of each register regoff */
104 : int *memcopycount; /* counts copies of each INMEMORY regoff */
105 : int memcopycountsize; /* size of memcopycount buffer */
106 : };
107 :
108 :
109 : /* function prototypes ********************************************************/
110 :
111 : void reg_setup(jitdata *jd);
112 :
113 : #endif // REG_HPP_
114 :
115 :
116 : /*
117 : * These are local overrides for various environment variables in Emacs.
118 : * Please do not remove this and leave it at the end of the file, where
119 : * Emacs will automagically detect them.
120 : * ---------------------------------------------------------------------
121 : * Local variables:
122 : * mode: c++
123 : * indent-tabs-mode: t
124 : * c-basic-offset: 4
125 : * tab-width: 4
126 : * End:
127 : * vim:noexpandtab:sw=4:ts=4:
128 : */
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