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 7695 2007-04-12 19:49:34Z twisti $
36 /* define x86 register numbers ************************************************/
47 /* define architecture features ***********************************************/
49 #define U8_AVAILABLE 1
51 #define SUPPORT_DIVISION 1
52 #define SUPPORT_LONG 1
59 /* ATTENTION: i386 architectures support these conversions, but we
60 need the builtin functions in corner cases */
66 #define SUPPORT_LONG_ADD 1
67 #define SUPPORT_LONG_CMP 1
68 #define SUPPORT_LONG_CMP_CONST 1
69 #define SUPPORT_LONG_LOGICAL 1
70 #define SUPPORT_LONG_SHIFT 1
71 #define SUPPORT_LONG_MUL 1
72 #define SUPPORT_LONG_DIV 0
74 #define SUPPORT_LONG_DIV_POW2 1
75 #define SUPPORT_LONG_REM_POW2 0
77 #define SUPPORT_CONST_LOGICAL 1 /* AND, OR, XOR with immediates */
78 #define SUPPORT_CONST_MUL 1 /* mutiply with immediate */
80 #define SUPPORT_CONST_STORE 1 /* do we support const stores */
81 #define SUPPORT_CONST_STORE_ZERO_ONLY 0 /* on some risc machines we can */
82 /* only store REG_ZERO */
85 /* float **********************************************************************/
87 #define SUPPORT_FLOAT 1
89 #if defined(ENABLE_SOFT_FLOAT_CMP)
90 # define SUPPORT_FLOAT_CMP 0
92 # define SUPPORT_FLOAT_CMP 1
96 /* double *********************************************************************/
98 #define SUPPORT_DOUBLE 1
100 #if defined(ENABLE_SOFT_FLOAT_CMP)
101 # define SUPPORT_DOUBLE_CMP 0
103 # define SUPPORT_DOUBLE_CMP 1
107 #define HAS_4BYTE_STACKSLOT
108 #define ALIGN_LONGS_IN_MEMORY /* Align Longs and/or Doubles at */
109 #define ALIGN_DOUBLES_IN_MEMORY /* 2*Stackslotsize relativ to stackframe */
110 /* Memory Positions for not Interface Stackslots (allocate_scratch_registers)*/
111 /* are not properly aligned in case HAS_4_BYTE_STACKSLOT is not defined! */
112 /* For HAS_4_BYTE_STACKSLOT archs no distinction is made between long and dbl*/
113 /* define SUPPORT_COMBINE_INTEGER_REGISTERS */
116 /* branches *******************************************************************/
118 #define SUPPORT_BRANCH_CONDITIONAL_CONDITION_REGISTER 1
119 #define SUPPORT_BRANCH_CONDITIONAL_ONE_INTEGER_REGISTER 0
120 #define SUPPORT_BRANCH_CONDITIONAL_TWO_INTEGER_REGISTERS 0
121 #define SUPPORT_BRANCH_CONDITIONAL_UNSIGNED_CONDITIONS 1
124 /* exceptions *****************************************************************/
126 #define SUPPORT_HARDWARE_DIVIDE_BY_ZERO 1
129 /* replacement ****************************************************************/
131 #define REPLACEMENT_PATCH_SIZE 5 /* bytes */
132 #define REPLACEMENT_STUB_SIZE (5+5+1) /* bytes */
138 * These are local overrides for various environment variables in Emacs.
139 * Please do not remove this and leave it at the end of the file, where
140 * Emacs will automagically detect them.
141 * ---------------------------------------------------------------------
144 * indent-tabs-mode: t