1 /* src/vm/jit/s390/md-abi.h - defines for s390 Linux ABI
3 Copyright (C) 1996-2010
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
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.
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.
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
29 /* define registers ***********************************************************/
65 /* preallocated registers *****************************************************/
67 /* integer registers */
69 #define REG_RESULT R2 /* to deliver method results */
70 #define REG_RESULT2 R3
72 #define REG_ITMP1 R1 /* temporary register */
73 #define REG_ITMP2 R14 /* temporary register and method pointer */
74 #define REG_ITMP3 R0 /* temporary register */
76 #define IS_REG_ITMP(x) (((x) == REG_ITMP1) || ((x) == REG_ITMP2) || ((x) == REG_ITMP3))
78 #define REG_ITMP12_PACKED PACK_REGS(REG_ITMP2, REG_ITMP1)
79 #define REG_ITMP23_PACKED PACK_REGS(REG_ITMP3, REG_ITMP2)
80 #define REG_ITMP13_PACKED PACK_REGS(REG_ITMP3, REG_ITMP1)
82 #define REG_ITMP31_PACKED PACK_REGS(REG_ITMP1, REG_ITMP3)
83 #define REG_RESULT_PACKED PACK_REGS(REG_RESULT2, REG_RESULT)
85 #define REG_METHODPTR REG_ITMP1/* pointer to the place from where the */
86 /* procedure vector has been fetched */
88 #define REG_NULL -1 /* used for reg_of_var where d is not needed */
90 #define REG_ITMP1_XPTR REG_ITMP3/* exception pointer = temporary register 3 */
91 #define REG_ITMP2_XPC REG_ITMP1/* exception pc = temporary register 1 */
93 #define REG_SP R15 /* stack pointer */
94 #define REG_RA R14 /* same as itmp3 */
98 #define REG_A0 R2 /* define some argument registers */
107 /* floating point registers */
109 #define REG_FRESULT F0 /* to deliver floating point method results */
111 #define REG_FTMP1 F4 /* temporary floating point register */
112 #define REG_FTMP2 F6 /* temporary floating point register */
116 #define INT_REG_CNT 16 /* number of integer registers */
117 #define INT_SAV_CNT 6 /* number of integer callee saved registers */
118 #define INT_ARG_CNT 5 /* number of integer argument registers */
119 #define INT_TMP_CNT 0 /* number of integer temporary registers */
120 #define INT_RES_CNT 5 /* number of integer reserved registers */
122 #define FLT_REG_CNT 16 /* number of float registers */
123 #define FLT_SAV_CNT 0 /* number of float callee saved registers */
124 #define FLT_ARG_CNT 2 /* number of float argument registers */
125 #define FLT_TMP_CNT 12 /* number of float temporary registers */
126 #define FLT_RES_CNT 2 /* number of float reserved registers */
128 #endif /* _MD_ABI_H */
132 * These are local overrides for various environment variables in Emacs.
133 * Please do not remove this and leave it at the end of the file, where
134 * Emacs will automagically detect them.
135 * ---------------------------------------------------------------------
138 * indent-tabs-mode: t