1 /* src/vm/jit/mips/md-abi.h - defines for MIPS ABI
3 Copyright (C) 1996-2005, 2006, 2007 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
34 /* preallocated registers *****************************************************/
36 /* integer registers */
38 #define REG_ZERO 0 /* always zero */
40 #define REG_RESULT 2 /* to deliver method results */
42 #if SIZEOF_VOID_P == 4
43 #define REG_RESULT2 3 /* to deliver method results (low 32-bits) */
46 #define REG_ITMP1 1 /* temporary register */
47 #if SIZEOF_VOID_P == 8
48 #define REG_ITMP2 3 /* temporary register and method pointer */
50 #define REG_ITMP2 24 /* temporary register and method pointer */
52 #define REG_ITMP3 25 /* temporary register */
54 #define REG_RA 31 /* return address */
55 #define REG_SP 29 /* stack pointer */
56 #define REG_GP 28 /* global pointer */
58 #define REG_PV 30 /* procedure vector, must be provided by caller */
59 #define REG_METHODPTR 25 /* pointer to the place from where the procedure */
60 /* vector has been fetched */
61 #define REG_ITMP1_XPTR REG_ITMP1 /* exception pointer = temporary register 1 */
62 #define REG_ITMP2_XPC REG_ITMP2 /* exception pc = temporary register 2 */
64 #define REG_A0 4 /* define some argument registers */
69 #if SIZEOF_VOID_P == 8
73 /* floating point registers */
75 #define REG_FRESULT 0 /* to deliver floating point method results */
77 #define REG_IFTMP 1 /* temporary integer and floating point register */
80 #if SIZEOF_VOID_P == 8
84 #define REG_FTMP1 1 /* temporary floating point register */
85 #define REG_FTMP2 2 /* temporary floating point register */
86 #define REG_FTMP3 3 /* temporary floating point register */
88 #define REG_FA0 12 /* define some argument registers */
92 #define INT_REG_CNT 32 /* number of integer registers */
93 #define INT_SAV_CNT 8 /* number of int callee saved registers */
94 #define INT_ARG_CNT 8 /* number of int argument registers */
95 #define INT_TMP_CNT 5 /* number of integer temporary registers */
96 #define INT_RES_CNT 10 /* number of integer reserved registers */
97 /* + 1 REG_RET totals to 32 */
99 #define FLT_REG_CNT 32 /* number of float registers */
100 #define FLT_SAV_CNT 4 /* number of flt callee saved registers */
101 #define FLT_ARG_CNT 8 /* number of flt argument registers */
102 #define FLT_TMP_CNT 16 /* number of float temporary registers */
103 #define FLT_RES_CNT 3 /* number of float reserved registers */
104 /* + 1 REG_RET totals to 32 */
106 #define TRACE_ARGS_NUM 8
108 #else /* SIZEOF_VOID_P == 8 */
112 #define REG_FTMP1 2 /* temporary floating point register */
113 #define REG_FTMP2 4 /* temporary floating point register */
114 #define REG_FTMP3 6 /* temporary floating point register */
116 #define INT_REG_CNT 32 /* number of integer registers */
117 #define INT_SAV_CNT 8 /* number of int callee saved registers */
118 #define INT_ARG_CNT 4 /* number of int argument registers */
119 #define INT_TMP_CNT 8 /* number of integer temporary registers */
120 #define INT_RES_CNT 11 /* number of integer reserved registers */
121 /* + 1 REG_RET totals to 32 */
123 #if !defined(ENABLE_SOFT_FLOAT)
125 #define FLT_REG_CNT 32 /* number of float registers */
126 #define FLT_SAV_CNT 6 /* number of flt callee saved registers */
127 #define FLT_ARG_CNT 2 /* number of flt argument registers */
128 #define FLT_TMP_CNT 4 /* number of float temporary registers */
129 #define FLT_RES_CNT 4 /* number of float reserved registers */
131 #else /* !defined(ENABLE_SOFT_FLOAT) */
133 #define FLT_REG_CNT 0 /* number of float registers */
134 #define FLT_SAV_CNT 0 /* number of flt callee saved registers */
135 #define FLT_ARG_CNT 0 /* number of flt argument registers */
136 #define FLT_TMP_CNT 0 /* number of float temporary registers */
137 #define FLT_RES_CNT 0 /* number of float reserved registers */
139 #endif /* !defined(ENABLE_SOFT_FLOAT) */
141 #define TRACE_ARGS_NUM 2
143 #endif /* SIZEOF_VOID_P == 8 */
146 /* ABI defines ****************************************************************/
148 #if SIZEOF_VOID_P == 8
149 # define PA_SIZE 0 /* we don't have a parameter area */
151 # define PA_SIZE 4 * 4 /* parameter area is max. 4 * 4 bytes */
155 /* packed register defines ****************************************************/
157 #if SIZEOF_VOID_P == 4
158 # if WORDS_BIGENDIAN == 1
159 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT2, REG_RESULT)
161 # define REG_A0_A1_PACKED PACK_REGS(REG_A1, REG_A0)
162 # define REG_A2_A3_PACKED PACK_REGS(REG_A3, REG_A2)
164 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP2, REG_ITMP1)
165 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP3, REG_ITMP2)
167 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT, REG_RESULT2)
169 # define REG_A0_A1_PACKED PACK_REGS(REG_A0, REG_A1)
170 # define REG_A2_A3_PACKED PACK_REGS(REG_A2, REG_A3)
172 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP1, REG_ITMP2)
173 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP2, REG_ITMP3)
177 #endif /* _MD_ABI_H */
181 * These are local overrides for various environment variables in Emacs.
182 * Please do not remove this and leave it at the end of the file, where
183 * Emacs will automagically detect them.
184 * ---------------------------------------------------------------------
187 * indent-tabs-mode: t