1 /* src/vm/jit/i386/arch.h - architecture defines for i386
3 Copyright (C) 1996-2008, 2009
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 JIT_COMPILER_VIA_SIGNAL
34 /* define x86 register numbers ************************************************/
36 #if !defined(__SOLARIS__) || !defined(SKIP_REG_DEFS)
38 #if defined(__SOLARIS__)
62 /* define architecture features ***********************************************/
64 #define SUPPORT_DIVISION 1
65 #define SUPPORT_LONG 1
72 /* ATTENTION: i386 architectures support these conversions, but we
73 need the builtin functions in corner cases */
79 #define SUPPORT_LONG_ADD 1
80 #define SUPPORT_LONG_CMP 1
81 #define SUPPORT_LONG_CMP_CONST 1
82 #define SUPPORT_LONG_LOGICAL 1
83 #define SUPPORT_LONG_SHIFT 1
84 #define SUPPORT_LONG_MUL 1
85 #define SUPPORT_LONG_DIV 0
87 #define SUPPORT_LONG_DIV_POW2 1
88 #define SUPPORT_LONG_REM_POW2 0
90 #define SUPPORT_CONST_LOGICAL 1 /* AND, OR, XOR with immediates */
91 #define SUPPORT_CONST_MUL 1 /* mutiply with immediate */
93 #define SUPPORT_CONST_STORE 1 /* do we support const stores */
94 #define SUPPORT_CONST_STORE_ZERO_ONLY 0 /* on some risc machines we can */
95 /* only store REG_ZERO */
98 /* float **********************************************************************/
100 #define SUPPORT_FLOAT 1
102 #if defined(ENABLE_SOFT_FLOAT_CMP)
103 # define SUPPORT_FLOAT_CMP 0
105 # define SUPPORT_FLOAT_CMP 1
109 /* double *********************************************************************/
111 #define SUPPORT_DOUBLE 1
113 #if defined(ENABLE_SOFT_FLOAT_CMP)
114 # define SUPPORT_DOUBLE_CMP 0
116 # define SUPPORT_DOUBLE_CMP 1
120 /* define SUPPORT_COMBINE_INTEGER_REGISTERS */
123 /* branches *******************************************************************/
125 #define SUPPORT_BRANCH_CONDITIONAL_CONDITION_REGISTER 1
126 #define SUPPORT_BRANCH_CONDITIONAL_ONE_INTEGER_REGISTER 0
127 #define SUPPORT_BRANCH_CONDITIONAL_TWO_INTEGER_REGISTERS 0
128 #define SUPPORT_BRANCH_CONDITIONAL_UNSIGNED_CONDITIONS 1
131 /* exceptions *****************************************************************/
133 #define SUPPORT_HARDWARE_DIVIDE_BY_ZERO 1
136 /* stackframe *****************************************************************/
138 #define STACKFRMAE_RA_BETWEEN_FRAMES 1
139 #define STACKFRAME_RA_TOP_OF_FRAME 0
140 #define STACKFRAME_RA_LINKAGE_AREA 0
141 #define STACKFRAME_LEAFMETHODS_RA_REGISTER 0
142 #define STACKFRAME_SYNC_NEEDS_TWO_SLOTS 0
145 /* replacement ****************************************************************/
147 #define REPLACEMENT_PATCH_SIZE 2 /* bytes */
149 /* subtype ********************************************************************/
151 #define USES_NEW_SUBTYPE 1
153 /* memory barriers ************************************************************/
155 #define CAS_PROVIDES_FULL_BARRIER 1
161 * These are local overrides for various environment variables in Emacs.
162 * Please do not remove this and leave it at the end of the file, where
163 * Emacs will automagically detect them.
164 * ---------------------------------------------------------------------
167 * indent-tabs-mode: t