1 /* src/vm/jit/arm/md-abi.h - defines for arm 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_RESULT 0 /* to deliver method results */
39 #define REG_RESULT2 1 /* to deliver long method results */
41 #define REG_PV 12 /* intra-procedure-call scratch register */
42 #define REG_SP 13 /* stack pointer */
43 #define REG_LR 14 /* link register */
44 #define REG_PC 15 /* program counter */
46 #define REG_METHODPTR 11 /* special register to fetch procedure vector */
48 #define REG_ITMP1 10 /* temporary register */
49 #define REG_ITMP2 11 /* temporary register and method pointer */
50 #define REG_ITMP3 9 /* temporary register */
52 #define REG_ITMP1_XPTR 10 /* exception pointer = temporary register 1 */
53 #define REG_ITMP2_XPC 11 /* exception pc = temporary register 2 */
55 #define REG_A0 0 /* define some argument registers */
60 #define REG_SPLIT 16 /* dummy register to mark a split of longs and */
61 /* doubles across register/stack barrier */
62 /* set LOW_REG = ARG4 and HIGH_REG = REG_SPLIT */
64 #define BITMASK_ARGS 0x0f /* bitmask for LDM/STM to save method arguments */
65 #define BITMASK_RESULT 0x03 /* bitmask for LDM/STM to save method results */
67 #if !defined(ENABLE_SOFTFLOAT)
68 /* floating point registers */
70 #define REG_FRESULT 0 /* to deliver floating point method results */
71 #define REG_FTMP1 6 /* temporary floating point register */
72 #define REG_FTMP2 7 /* temporary floating point register */
74 #endif /* !defined(ENABLE_SOFTFLOAT) */
77 /* register count *************************************************************/
78 #define INT_REG_CNT 16 /* number of integer registers */
79 #define INT_TMP_CNT 0 /* number of integer registers */
80 #define INT_SAV_CNT 5 /* number of int callee saved registers */
81 #define INT_ARG_CNT 4 /* number of int argument registers */
82 #define INT_RES_CNT 7 /* number of reserved integer registers */
84 #define FLT_REG_CNT 8 /* number of float registers */
85 #if defined(ENABLE_SOFTFLOAT)
86 # define FLT_TMP_CNT 0 /* number of flt temp registers */
87 # define FLT_SAV_CNT 0 /* number of flt callee saved registers */
88 # define FLT_ARG_CNT 0 /* number of flt argument registers */
89 # define FLT_RES_CNT 8 /* number of reserved float registers */
91 # define FLT_TMP_CNT 6 /* number of flt temp registers */
92 # define FLT_SAV_CNT 0 /* number of flt callee saved registers */
93 # define FLT_ARG_CNT 0 /* number of flt argument registers */
94 # define FLT_RES_CNT 2 /* number of reserved float registers */
95 #endif /* defined(ENABLE_SOFTFLOAT) */
98 /* Register Pack/Unpack Macros ************************************************/
100 #if defined(__ARMEL__)
102 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP1, REG_ITMP2)
103 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP2, REG_ITMP3)
104 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT, REG_RESULT2)
106 # define REG_A0_A1_PACKED PACK_REGS(REG_A0, REG_A1)
107 # define REG_A2_A3_PACKED PACK_REGS(REG_A2, REG_A3)
109 #else /* defined(__ARMEB__) */
111 # define REG_ITMP12_PACKED PACK_REGS(REG_ITMP2, REG_ITMP1)
112 # define REG_ITMP23_PACKED PACK_REGS(REG_ITMP3, REG_ITMP2)
113 # define REG_RESULT_PACKED PACK_REGS(REG_RESULT2, REG_RESULT)
115 # define REG_A0_A1_PACKED PACK_REGS(REG_A1, REG_A0)
116 # define REG_A2_A3_PACKED PACK_REGS(REG_A3, REG_A2)
120 #define REG_ITMP12_TYPED(t) ((IS_2_WORD_TYPE(t)) ? REG_ITMP12_PACKED : REG_ITMP1)
121 #define REG_RESULT_TYPED(t) ((IS_2_WORD_TYPE(t)) ? REG_RESULT_PACKED : REG_RESULT)
123 #endif /* _MD_ABI_H */
127 * These are local overrides for various environment variables in Emacs.
128 * Please do not remove this and leave it at the end of the file, where
129 * Emacs will automagically detect them.
130 * ---------------------------------------------------------------------
133 * indent-tabs-mode: t