CACAO
md-abi.hpp
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1 /* src/vm/jit/mips/md-abi.hpp - defines for MIPS 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 #include "config.h"
30 
31 
32 /* preallocated registers *****************************************************/
33 
34 /* integer registers */
35 
36 #define REG_ZERO 0 /* always zero */
37 
38 #define REG_RESULT 2 /* to deliver method results */
39 
40 #if SIZEOF_VOID_P == 4
41 #define REG_RESULT2 3 /* to deliver method results (low 32-bits) */
42 #endif
43 
44 #define REG_ITMP1 1 /* temporary register */
45 #if SIZEOF_VOID_P == 8
46 #define REG_ITMP2 3 /* temporary register and method pointer */
47 #else
48 #define REG_ITMP2 24 /* temporary register and method pointer */
49 #endif
50 #define REG_ITMP3 25 /* temporary register */
51 
52 #define REG_RA 31 /* return address */
53 #define REG_SP 29 /* stack pointer */
54 #define REG_GP 28 /* global pointer */
55 
56 #define REG_PV 30 /* procedure vector, must be provided by caller */
57 #define REG_METHODPTR 25 /* pointer to the place from where the procedure */
58  /* vector has been fetched */
59 #define REG_ITMP1_XPTR REG_ITMP1 /* exception pointer = temporary register 1 */
60 #define REG_ITMP2_XPC REG_ITMP2 /* exception pc = temporary register 2 */
61 
62 #define REG_A0 4 /* define some argument registers */
63 #define REG_A1 5
64 #define REG_A2 6
65 #define REG_A3 7
66 
67 #if SIZEOF_VOID_P == 8
68 #define REG_A4 8
69 #endif
70 
71 /* floating point registers */
72 
73 #define REG_FRESULT 0 /* to deliver floating point method results */
74 
75 #define REG_IFTMP 1 /* temporary integer and floating point register */
76 
77 
78 #if SIZEOF_VOID_P == 8
79 
80 /* MIPS64 defines */
81 
82 #define REG_FTMP1 1 /* temporary floating point register */
83 #define REG_FTMP2 2 /* temporary floating point register */
84 #define REG_FTMP3 3 /* temporary floating point register */
85 
86 #define REG_FA0 12 /* define some argument registers */
87 #define REG_FA1 13
88 #define REG_FA2 14
89 
90 #define INT_REG_CNT 32 /* number of integer registers */
91 #define INT_SAV_CNT 8 /* number of int callee saved registers */
92 #define INT_ARG_CNT 8 /* number of int argument registers */
93 #define INT_TMP_CNT 5 /* number of integer temporary registers */
94 #define INT_RES_CNT 10 /* number of integer reserved registers */
95  /* + 1 REG_RET totals to 32 */
96 
97 #define FLT_REG_CNT 32 /* number of float registers */
98 #define FLT_SAV_CNT 4 /* number of flt callee saved registers */
99 #define FLT_ARG_CNT 8 /* number of flt argument registers */
100 #define FLT_TMP_CNT 16 /* number of float temporary registers */
101 #define FLT_RES_CNT 3 /* number of float reserved registers */
102  /* + 1 REG_RET totals to 32 */
103 
104 #define TRACE_ARGS_NUM 8
105 
106 #else /* SIZEOF_VOID_P == 8 */
107 
108 /* MIPS32 defines */
109 
110 #define REG_FTMP1 2 /* temporary floating point register */
111 #define REG_FTMP2 4 /* temporary floating point register */
112 #define REG_FTMP3 6 /* temporary floating point register */
113 
114 #define INT_REG_CNT 32 /* number of integer registers */
115 #define INT_SAV_CNT 8 /* number of int callee saved registers */
116 #define INT_ARG_CNT 4 /* number of int argument registers */
117 #define INT_TMP_CNT 8 /* number of integer temporary registers */
118 #define INT_RES_CNT 11 /* number of integer reserved registers */
119  /* + 1 REG_RET totals to 32 */
120 
121 #if !defined(ENABLE_SOFT_FLOAT)
122 
123 #define FLT_REG_CNT 32 /* number of float registers */
124 #define FLT_SAV_CNT 6 /* number of flt callee saved registers */
125 #define FLT_ARG_CNT 2 /* number of flt argument registers */
126 #define FLT_TMP_CNT 4 /* number of float temporary registers */
127 #define FLT_RES_CNT 4 /* number of float reserved registers */
128 
129 #else /* !defined(ENABLE_SOFT_FLOAT) */
130 
131 #define FLT_REG_CNT 0 /* number of float registers */
132 #define FLT_SAV_CNT 0 /* number of flt callee saved registers */
133 #define FLT_ARG_CNT 0 /* number of flt argument registers */
134 #define FLT_TMP_CNT 0 /* number of float temporary registers */
135 #define FLT_RES_CNT 0 /* number of float reserved registers */
136 
137 #endif /* !defined(ENABLE_SOFT_FLOAT) */
138 
139 #define TRACE_ARGS_NUM 2
140 
141 #endif /* SIZEOF_VOID_P == 8 */
142 
143 
144 /* ABI defines ****************************************************************/
145 
146 #if SIZEOF_VOID_P == 8
147 # define PA_SIZE 0 /* we don't have a parameter area */
148 #else
149 # define PA_SIZE 4 * 4 /* parameter area is max. 4 * 4 bytes */
150 #endif
151 
152 
153 /* packed register defines ****************************************************/
154 
155 #if SIZEOF_VOID_P == 4
156 # if WORDS_BIGENDIAN == 1
157 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT2, REG_RESULT)
158 
159 # define REG_A0_A1_PACKED PACK_REGS(REG_A1, REG_A0)
160 # define REG_A2_A3_PACKED PACK_REGS(REG_A3, REG_A2)
161 
162 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP2, REG_ITMP1)
163 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP3, REG_ITMP2)
164 # else
165 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT, REG_RESULT2)
166 
167 # define REG_A0_A1_PACKED PACK_REGS(REG_A0, REG_A1)
168 # define REG_A2_A3_PACKED PACK_REGS(REG_A2, REG_A3)
169 
170 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP1, REG_ITMP2)
171 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP2, REG_ITMP3)
172 # endif
173 #endif
174 
175 #endif // MD_ABI_HPP_
176 
177 
178 /*
179  * These are local overrides for various environment variables in Emacs.
180  * Please do not remove this and leave it at the end of the file, where
181  * Emacs will automagically detect them.
182  * ---------------------------------------------------------------------
183  * Local variables:
184  * mode: c++
185  * indent-tabs-mode: t
186  * c-basic-offset: 4
187  * tab-width: 4
188  * End:
189  */
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