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 $Id: arch.h 7596 2007-03-28 21:05:53Z twisti $
36 /* define x86 register numbers ************************************************/
47 /* define architecture features ***********************************************/
49 #define U8_AVAILABLE 1
51 #define USEBUILTINTABLE
53 #define SUPPORT_DIVISION 1
54 #define SUPPORT_LONG 1
61 /* ATTENTION: i386 architectures support these conversions, but we
62 need the builtin functions in corner cases */
68 #define SUPPORT_LONG_ADD 1
69 #define SUPPORT_LONG_CMP 1
70 #define SUPPORT_LONG_CMP_CONST 1
71 #define SUPPORT_LONG_LOGICAL 1
72 #define SUPPORT_LONG_SHIFT 1
73 #define SUPPORT_LONG_MUL 1
74 #define SUPPORT_LONG_DIV 0
76 #define SUPPORT_LONG_DIV_POW2 1
77 #define SUPPORT_LONG_REM_POW2 0
79 #define SUPPORT_CONST_LOGICAL 1 /* AND, OR, XOR with immediates */
80 #define SUPPORT_CONST_MUL 1 /* mutiply with immediate */
82 #define SUPPORT_CONST_STORE 1 /* do we support const stores */
83 #define SUPPORT_CONST_STORE_ZERO_ONLY 0 /* on some risc machines we can */
84 /* only store REG_ZERO */
87 /* float **********************************************************************/
89 #define SUPPORT_FLOAT 1
91 #if defined(ENABLE_SOFT_FLOAT_CMP)
92 # define SUPPORT_FLOAT_CMP 0
94 # define SUPPORT_FLOAT_CMP 1
98 /* double *********************************************************************/
100 #define SUPPORT_DOUBLE 1
102 #if defined(ENABLE_SOFT_FLOAT_CMP)
103 # define SUPPORT_DOUBLE_CMP 0
105 # define SUPPORT_DOUBLE_CMP 1
109 #define HAS_4BYTE_STACKSLOT
110 #define ALIGN_LONGS_IN_MEMORY /* Align Longs and/or Doubles at */
111 #define ALIGN_DOUBLES_IN_MEMORY /* 2*Stackslotsize relativ to stackframe */
112 /* Memory Positions for not Interface Stackslots (allocate_scratch_registers)*/
113 /* are not properly aligned in case HAS_4_BYTE_STACKSLOT is not defined! */
114 /* For HAS_4_BYTE_STACKSLOT archs no distinction is made between long and dbl*/
115 /* define SUPPORT_COMBINE_INTEGER_REGISTERS */
118 /* branches *******************************************************************/
120 #define SUPPORT_BRANCH_CONDITIONAL_CONDITION_REGISTER 1
121 #define SUPPORT_BRANCH_CONDITIONAL_ONE_INTEGER_REGISTER 0
122 #define SUPPORT_BRANCH_CONDITIONAL_TWO_INTEGER_REGISTERS 0
123 #define SUPPORT_BRANCH_CONDITIONAL_UNSIGNED_CONDITIONS 1
126 /* exceptions *****************************************************************/
128 #define SUPPORT_HARDWARE_DIVIDE_BY_ZERO 1
131 /* replacement ****************************************************************/
133 #define REPLACEMENT_PATCH_SIZE 5 /* bytes */
134 #define REPLACEMENT_STUB_SIZE (5+5+1) /* bytes */
140 * These are local overrides for various environment variables in Emacs.
141 * Please do not remove this and leave it at the end of the file, where
142 * Emacs will automagically detect them.
143 * ---------------------------------------------------------------------
146 * indent-tabs-mode: t