1 /* src/vm/jit/i386/md-abi.c - functions for i386 Linux ABI
3 Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
4 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
5 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
6 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., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Christian Ullrich
29 Changes: Christian Thalinger
31 $Id: md-abi.c 3227 2005-09-19 14:03:36Z twisti $
38 #include "vm/jit/i386/md-abi.h"
40 #include "vm/descriptor.h"
41 #include "vm/global.h"
44 /* md_param_alloc **************************************************************
46 Allocate Arguments to Stackslots according the Calling Conventions
49 md->paramcount: Number of arguments for this method
50 md->paramtypes[].type: Argument types
53 md->params[].inmemory: Argument spilled on stack
54 md->params[].regoff: Stack offset or rd->arg[int|flt]regs index
55 md->memuse: Stackslots needed for argument spilling
56 md->argintreguse: max number of integer arguments used
57 md->argfltreguse: max number of float arguments used
59 *******************************************************************************/
61 void md_param_alloc(methoddesc *md)
70 for (i = 0; i < md->paramcount; i++, pd++) {
72 pd->regoff = stacksize;
73 stacksize += IS_2_WORD_TYPE(md->paramtypes[i].type) ? 2 : 1;
76 md->memuse = stacksize;
81 /* md_return_alloc *************************************************************
83 No straight forward precoloring of the Java Stackelement containing the return
84 value possible for i386, since it uses "reserved" registers for return values
86 *******************************************************************************/
87 void md_return_alloc(methodinfo *m, registerdata *rd, s4 return_type,
92 * These are local overrides for various environment variables in Emacs.
93 * Please do not remove this and leave it at the end of the file, where
94 * Emacs will automagically detect them.
95 * ---------------------------------------------------------------------