1 /* src/vm/jit/i386/arch.h - architecture defines for i386
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
25 Contact: cacao@cacaojvm.org
27 Authors: Christian Thalinger
29 $Id: arch.h 7241 2007-01-27 15:52:01Z twisti $
40 /* define x86 register numbers ************************************************/
51 /* define architecture features ***********************************************/
53 #define U8_AVAILABLE 1
55 #define USEBUILTINTABLE
57 #define SUPPORT_DIVISION 1
58 #define SUPPORT_LONG 1
65 /* ATTENTION: i386 architectures support these conversions, but we
66 need the builtin functions in corner cases */
72 #define SUPPORT_LONG_ADD 1
73 #define SUPPORT_LONG_CMP 1
74 #define SUPPORT_LONG_CMP_CONST 1
75 #define SUPPORT_LONG_LOGICAL 1
76 #define SUPPORT_LONG_SHIFT 1
77 #define SUPPORT_LONG_MUL 1
78 #define SUPPORT_LONG_DIV 0
80 #define SUPPORT_LONG_DIV_POW2 1
81 #define SUPPORT_LONG_REM_POW2 0
83 #define SUPPORT_CONST_LOGICAL 1 /* AND, OR, XOR with immediates */
84 #define SUPPORT_CONST_MUL 1 /* mutiply with immediate */
86 #define SUPPORT_CONST_STORE 1 /* do we support const stores */
87 #define SUPPORT_CONST_STORE_ZERO_ONLY 0 /* on some risc machines we can */
88 /* only store REG_ZERO */
91 /* float **********************************************************************/
93 #define SUPPORT_FLOAT 1
95 #if defined(ENABLE_SOFT_FLOAT_CMP)
96 # define SUPPORT_FLOAT_CMP 0
98 # define SUPPORT_FLOAT_CMP 1
102 /* double *********************************************************************/
104 #define SUPPORT_DOUBLE 1
106 #if defined(ENABLE_SOFT_FLOAT_CMP)
107 # define SUPPORT_DOUBLE_CMP 0
109 # define SUPPORT_DOUBLE_CMP 1
113 #define HAS_4BYTE_STACKSLOT
114 #define ALIGN_LONGS_IN_MEMORY /* Align Longs and/or Doubles at */
115 #define ALIGN_DOUBLES_IN_MEMORY /* 2*Stackslotsize relativ to stackframe */
116 /* Memory Positions for not Interface Stackslots (allocate_scratch_registers)*/
117 /* are not properly aligned in case HAS_4_BYTE_STACKSLOT is not defined! */
118 /* For HAS_4_BYTE_STACKSLOT archs no distinction is made between long and dbl*/
119 /* define SUPPORT_COMBINE_INTEGER_REGISTERS */
122 /* exceptions *****************************************************************/
124 #define SUPPORT_HARDWARE_DIVIDE_BY_ZERO 1
127 /* replacement ****************************************************************/
129 #define REPLACEMENT_PATCH_SIZE 5 /* bytes */
130 #define REPLACEMENT_STUB_SIZE (5+5+1) /* bytes */
136 * These are local overrides for various environment variables in Emacs.
137 * Please do not remove this and leave it at the end of the file, where
138 * Emacs will automagically detect them.
139 * ---------------------------------------------------------------------
142 * indent-tabs-mode: t