1 /* src/vm/jit/m68k/linux/md-abi.h - defines for m68k Linux 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
37 /* preallocated registers *****************************************************/
39 /* integer registers */
41 #define REG_RESULT 0 /* to deliver method results */
42 #define REG_RESULT2 1 /* to deliver long method results */
44 #define REG_D0 0 /* register may be trashed by callee */
49 #define REG_ITMP1 2 /* temporary register */
50 #define REG_ITMP2 3 /* temporary register and method pointer */
51 #define REG_ITMP3 4 /* temporary register */
55 /* floating point registers */
57 #define REG_F0 0 /* registers may be trashed by callee */
60 #define REG_FRESULT 0 /* to deliver floating point method results */
61 #define REG_FTMP1 2 /* temporary floating point register */
62 #define REG_FTMP2 3 /* temporary floating point register */
63 #define REG_FTMP3 4 /* temporary floating point register */
65 #define REG_IFTMP 2 /* temporary integer and floating point register */
68 /* address registers */
70 #define REG_A0 0 /* registers may be trashed by callee */
75 #define REG_METHODPTR REG_ATMP2 /* pointer to the place from where the procedure */
78 #define REG_ATMP1_XPTR REG_ATMP1 /* exception pointer = temporary register 1 */
79 #define REG_ATMP2_XPC REG_ATMP2 /* exception pc = temporary register 2 */
81 #define REG_FP 6 /* frame pointer */
82 #define REG_SP 7 /* stack pointer */
84 /* number for the register allocator */
86 #define INT_REG_CNT 8 /* number of integer registers */
87 #define INT_SAV_CNT 3 /* number of int callee saved registers */
88 #define INT_ARG_CNT 0 /* number of int argument registers */
89 #define INT_TMP_CNT 2 /* number of integer temporary registers */
90 #define INT_RES_CNT 3 /* number of integer reserved registers */
92 #if !defined(ENABLE_SOFTFLOAT)
93 #define FLT_REG_CNT 8 /* number of float registers */
94 #define FLT_SAV_CNT 3 /* number of float callee saved registers */
95 #define FLT_ARG_CNT 0 /* number of float argument registers */
96 #define FLT_TMP_CNT 2 /* number of float temporary registers */
97 #define FLT_RES_CNT 3 /* number of float reserved registers */
99 #define FLT_REG_CNT 8 /* number of float registers */
100 #define FLT_SAV_CNT 0 /* number of float callee saved registers */
101 #define FLT_ARG_CNT 0 /* number of float argument registers */
102 #define FLT_TMP_CNT 0 /* number of float temporary registers */
103 #define FLT_RES_CNT 8 /* number of float reserved registers */
107 #define ADR_REG_CNT 8
108 #define ADR_SAV_CNT 1
109 #define ADR_ARG_CNT 0
110 #define ADR_TMP_CNT 2
111 #define ADR_RES_CNT 5
113 #define ADR_REG_CNT 8
114 #define ADR_SAV_CNT 2
115 #define ADR_ARG_CNT 0
116 #define ADR_TMP_CNT 2
117 #define ADR_RES_CNT 4
120 /* packed register defines ***************************************************/
122 #define REG_RESULT_PACKED PACK_REGS(REG_RESULT2, REG_RESULT)
123 #define REG_ITMP12_PACKED PACK_REGS(REG_ITMP1, REG_ITMP2)
124 #define REG_ITMP23_PACKED PACK_REGS(REG_ITMP2, REG_ITMP3)
126 /* ABI defines ****************************************************************/
130 #define LA_SIZE_IN_POINTERS 0
132 #define LA_SIZE 48 /* linkage area size */
133 #define LA_SIZE_ALIGNED 16 /* linkage area size aligned to 16-byte */
134 #define LA_SIZE_IN_POINTERS (LA_SIZE / SIZEOF_VOID_P)
135 #define LA_LR_OFFSET 16 /* link register offset in linkage area */
136 #define PA_SIZE (PA_SIZE_IN_POINTERS*8)
137 #define PA_SIZE_IN_POINTERS 8 /* linux/ppc64 has a minimun parameter save area size, XXX:darwin? */
139 /* #define ALIGN_FRAME_SIZE(sp) (sp) */
141 #endif /* _MD_ABI_H */
145 * These are local overrides for various environment variables in Emacs.
146 * Please do not remove this and leave it at the end of the file, where
147 * Emacs will automagically detect them.
148 * ---------------------------------------------------------------------
151 * indent-tabs-mode: t