1 /* src/vm/jit/i386/md-abi.c - functions for i386 Linux ABI
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
31 #include "vm/jit/i386/md-abi.h"
33 #include "vm/global.h"
35 #include "vm/jit/abi.h"
37 #include "vmcore/descriptor.h"
40 /* register descripton - array ************************************************/
43 REG_RET, REG_RES, REG_RES, REG_TMP, REG_RES, REG_SAV, REG_SAV, REG_SAV,
47 const char *abi_registers_integer_name[] = {
48 "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi"
51 const s4 abi_registers_integer_argument[] = {
55 const s4 abi_registers_integer_saved[] = {
61 const s4 abi_registers_integer_temporary[] = {
66 s4 nregdescfloat[] = {
67 /* rounding problems with callee saved registers */
68 /* REG_SAV, REG_SAV, REG_SAV, REG_SAV, REG_TMP, REG_TMP, REG_RES, REG_RES, */
69 /* REG_TMP, REG_TMP, REG_TMP, REG_TMP, REG_TMP, REG_TMP, REG_RES, REG_RES, */
70 REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES,
74 const s4 abi_registers_float_argument[] = {
78 const s4 abi_registers_float_saved[] = {
82 const s4 abi_registers_float_temporary[] = {
87 /* md_param_alloc **************************************************************
89 Allocate Arguments to Stackslots according the Calling Conventions
92 md->paramcount: Number of arguments for this method
93 md->paramtypes[].type: Argument types
96 md->params[].inmemory: Argument spilled on stack
97 md->params[].regoff: Stack offset or rd->arg[int|flt]regs index
98 md->memuse: Stackslots needed for argument spilling
99 md->argintreguse: max number of integer arguments used
100 md->argfltreguse: max number of float arguments used
102 *******************************************************************************/
104 void md_param_alloc(methoddesc *md)
113 for (i = 0; i < md->paramcount; i++, pd++) {
115 pd->index = stacksize;
116 pd->regoff = stacksize * 8;
120 md->memuse = stacksize;
121 md->argintreguse = 0;
122 md->argfltreguse = 0;
126 /* md_param_alloc_native *******************************************************
128 Pre-allocate arguments according the native ABI.
130 *******************************************************************************/
132 void md_param_alloc_native(methoddesc *md)
141 for (i = 0; i < md->paramcount; i++, pd++) {
143 pd->index = stacksize;
144 pd->regoff = stacksize * 4;
145 stacksize += IS_2_WORD_TYPE(md->paramtypes[i].type) ? 2 : 1;
148 md->memuse = stacksize;
149 md->argintreguse = 0;
150 md->argfltreguse = 0;
154 /* md_return_alloc *************************************************************
156 No straight forward precoloring of the Java Stackelement containing
157 the return value possible for i386, since it uses "reserved"
158 registers for return values
160 *******************************************************************************/
162 void md_return_alloc(jitdata *jd, stackptr stackslot)
169 * These are local overrides for various environment variables in Emacs.
170 * Please do not remove this and leave it at the end of the file, where
171 * Emacs will automagically detect them.
172 * ---------------------------------------------------------------------
175 * indent-tabs-mode: t