CACAO
md-abi.hpp
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1 /* src/vm/jit/aarch64/md-abi.hpp - defines for aarch64 ABI
2 
3  Copyright (C) 1996-2013
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 MD_ABI_HPP_
27 #define MD_ABI_HPP_ 1
28 
29 /* preallocated registers *****************************************************/
30 
31 /* integer registers */
32 
33 #define REG_RESULT 0 /* to deliver method results */
34 
35 #define REG_A0 0 /* define some argument registers */
36 #define REG_A1 1
37 #define REG_A2 2
38 #define REG_A3 3
39 
40 #define REG_LR 30 /* link register */
41 #define REG_RA 30 /* return address = link register (bw compat) */
42 #define REG_PV 18 /* procedure vector, must be provided by caller */
43 #define REG_METHODPTR 10 /* pointer to the place from where the procedure */
44  /* vector has been fetched */
45 
46 #define REG_ITMP1 9 /* temporary register */
47 #define REG_ITMP2 10 /* temporary register */
48 #define REG_ITMP3 11 /* temporary register */
49 
50 #define REG_ITMP1_XPTR 9 /* exception pointer = temporary register 1 */
51 #define REG_ITMP2_XPC 10 /* exception pc = temporary register 2 */
52 
53 #define REG_FP 29 /* frame pointer, needed in compiler2 */
54 
55 #define REG_SP 31 /* stack pointer */
56 #define REG_ZERO 31 /* always zero */
57 
58 
59 /* floating point registers */
60 
61 #define REG_FRESULT 0 /* to deliver floating point method results */
62 
63 #define REG_FA0 0 /* define some argument registers */
64 #define REG_FA1 1
65 #define REG_FA2 2
66 
67 #define REG_FTMP1 16 /* temporary floating point register */
68 #define REG_FTMP2 17 /* temporary floating point register */
69 #define REG_FTMP3 18 /* temporary floating point register */
70 
71 #define REG_IFTMP 28 /* temporary integer and floating point register */
72 
73 
74 #define INT_REG_CNT 32 /* number of integer registers */
75 #define INT_SAV_CNT 10 /* number of int callee saved registers */
76 #define INT_ARG_CNT 8 /* number of int argument registers */
77 #define INT_TMP_CNT 6 /* number of int temp registers */
78 #define INT_RES_CNT 7 /* number of reserved integer registers */
79  /* the one "missing" register is the return reg */
80 
81 #define FLT_REG_CNT 32 /* number of float registers */
82 #define FLT_SAV_CNT 8 /* number of flt callee saved registers */
83 #define FLT_ARG_CNT 8 /* number of flt argument registers */
84 #define FLT_TMP_CNT 13 /* number of flt temp registers */
85 #define FLT_RES_CNT 3 /* number of reserved float registers */
86  /* the one "missing" register is the return reg */
87 
88 #endif // MD_ABI_HPP_
89 
90 
91 /*
92  * These are local overrides for various environment variables in Emacs.
93  * Please do not remove this and leave it at the end of the file, where
94  * Emacs will automagically detect them.
95  * ---------------------------------------------------------------------
96  * Local variables:
97  * mode: c++
98  * indent-tabs-mode: t
99  * c-basic-offset: 4
100  * tab-width: 4
101  * End:
102  */
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