1 /* src/vm/jit/mips/md-abi.h - defines for MIPS ABI
3 Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
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., 51 Franklin Street, Fifth Floor, Boston, MA
25 Contact: cacao@cacaojvm.org
27 Authors: Christian Thalinger
29 Changes: Christian Ullrich
31 $Id: md-abi.h 5829 2006-10-26 10:34:17Z twisti $
42 /* preallocated registers *****************************************************/
44 /* integer registers */
46 #define REG_ZERO 0 /* always zero */
48 #define REG_RESULT 2 /* to deliver method results */
50 #if SIZEOF_VOID_P == 4
51 #define REG_RESULT2 3 /* to deliver method results (low 32-bits) */
54 #define REG_ITMP1 1 /* temporary register */
55 #if SIZEOF_VOID_P == 8
56 #define REG_ITMP2 3 /* temporary register and method pointer */
58 #define REG_ITMP2 24 /* temporary register and method pointer */
60 #define REG_ITMP3 25 /* temporary register */
62 #define REG_RA 31 /* return address */
63 #define REG_SP 29 /* stack pointer */
64 #define REG_GP 28 /* global pointer */
66 #define REG_PV 30 /* procedure vector, must be provided by caller */
67 #define REG_METHODPTR 25 /* pointer to the place from where the procedure */
68 /* vector has been fetched */
69 #define REG_ITMP1_XPTR REG_ITMP1 /* exception pointer = temporary register 1 */
70 #define REG_ITMP2_XPC REG_ITMP2 /* exception pc = temporary register 2 */
72 #define REG_A0 4 /* define some argument registers */
77 #if SIZEOF_VOID_P == 8
81 /* floating point registers */
83 #define REG_FRESULT 0 /* to deliver floating point method results */
85 #define REG_IFTMP 1 /* temporary integer and floating point register */
88 #if SIZEOF_VOID_P == 8
92 #define REG_FTMP1 1 /* temporary floating point register */
93 #define REG_FTMP2 2 /* temporary floating point register */
94 #define REG_FTMP3 3 /* temporary floating point register */
96 #define INT_REG_CNT 32 /* number of integer registers */
97 #define INT_SAV_CNT 8 /* number of int callee saved registers */
98 #define INT_ARG_CNT 8 /* number of int argument registers */
99 #define INT_TMP_CNT 5 /* number of integer temporary registers */
100 #define INT_RES_CNT 10 /* number of integer reserved registers */
101 /* + 1 REG_RET totals to 32 */
103 #define FLT_REG_CNT 32 /* number of float registers */
104 #define FLT_SAV_CNT 4 /* number of flt callee saved registers */
105 #define FLT_ARG_CNT 8 /* number of flt argument registers */
106 #define FLT_TMP_CNT 16 /* number of float temporary registers */
107 #define FLT_RES_CNT 3 /* number of float reserved registers */
108 /* + 1 REG_RET totals to 32 */
110 #define TRACE_ARGS_NUM 8
112 #else /* SIZEOF_VOID_P == 8 */
116 #define REG_FTMP1 2 /* temporary floating point register */
117 #define REG_FTMP2 4 /* temporary floating point register */
118 #define REG_FTMP3 6 /* temporary floating point register */
120 #define INT_REG_CNT 32 /* number of integer registers */
121 #define INT_SAV_CNT 8 /* number of int callee saved registers */
122 #define INT_ARG_CNT 4 /* number of int argument registers */
123 #define INT_TMP_CNT 8 /* number of integer temporary registers */
124 #define INT_RES_CNT 11 /* number of integer reserved registers */
125 /* + 1 REG_RET totals to 32 */
127 #if !defined(ENABLE_SOFT_FLOAT)
129 #define FLT_REG_CNT 32 /* number of float registers */
130 #define FLT_SAV_CNT 6 /* number of flt callee saved registers */
131 #define FLT_ARG_CNT 2 /* number of flt argument registers */
132 #define FLT_TMP_CNT 4 /* number of float temporary registers */
133 #define FLT_RES_CNT 4 /* number of float reserved registers */
135 #else /* !defined(ENABLE_SOFT_FLOAT) */
137 #define FLT_REG_CNT 0 /* number of float registers */
138 #define FLT_SAV_CNT 0 /* number of flt callee saved registers */
139 #define FLT_ARG_CNT 0 /* number of flt argument registers */
140 #define FLT_TMP_CNT 0 /* number of float temporary registers */
141 #define FLT_RES_CNT 0 /* number of float reserved registers */
143 #endif /* !defined(ENABLE_SOFT_FLOAT) */
145 #define TRACE_ARGS_NUM 2
147 #endif /* SIZEOF_VOID_P == 8 */
150 /* ABI defines ****************************************************************/
152 #if SIZEOF_VOID_P == 8
153 # define PA_SIZE 0 /* we don't have a parameter area */
155 # define PA_SIZE 4 * 4 /* parameter area is max. 4 * 4 bytes */
159 /* packed register defines ****************************************************/
161 #if SIZEOF_VOID_P == 4
162 # if WORDS_BIGENDIAN == 1
163 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP2, REG_ITMP1)
164 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP3, REG_ITMP2)
165 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT2, REG_RESULT)
167 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP1, REG_ITMP2)
168 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP2, REG_ITMP3)
169 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT, REG_RESULT2)
173 #endif /* _MD_ABI_H */
177 * These are local overrides for various environment variables in Emacs.
178 * Please do not remove this and leave it at the end of the file, where
179 * Emacs will automagically detect them.
180 * ---------------------------------------------------------------------
183 * indent-tabs-mode: t