1 /* src/vm/jit/sparc64/md-abi.c - functions for Sparc ABI
3 Copyright (C) 1996-2005, 2006 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: md-abi.h 4357 2006-01-22 23:33:38Z twisti $
33 #include "vm/jit/sparc64/md-abi.h"
35 #include "vm/global.h"
37 #include "vm/jit/abi.h"
39 #include "vmcore/descriptor.h"
42 #include "mm/memory.h"
46 /* register descripton array **************************************************/
48 /* callee point-of-view, after SAVE has been called. */
50 /* zero itmp1/g1 itmp2/g2 itmp3/g3 temp/g4 temp/g5 sys/g6 sys/g7 */
51 REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES,
53 /* o0 o1 o2 o3 o4 pv/o5 sp/o6 ra/o7 */
54 REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_RES, REG_RES, REG_RES,
56 /* l0 l1 l2 l3 l4 l5 l6 l7 */
57 REG_SAV, REG_SAV, REG_SAV, REG_SAV, REG_SAV, REG_SAV, REG_SAV, REG_SAV,
59 /* i0/v0 i1 i2 i3 i4 pv/i5 fp/i6 ra/i7 */
60 REG_RET, REG_SAV, REG_SAV, REG_SAV, REG_SAV, REG_RES, REG_RES, REG_RES,
64 const char *abi_registers_integer_name[] = {
65 "zero", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
66 "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
67 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
68 "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7"
71 const s4 abi_registers_integer_argument[] = {
79 const s4 abi_registers_integer_saved[] = {
94 const s4 abi_registers_integer_temporary[] = {
98 s4 nregdescfloat[] = {
99 REG_RET, REG_RES, REG_RES, REG_RES, REG_TMP, REG_TMP, REG_TMP, REG_TMP,
100 REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_TMP, REG_TMP, REG_TMP,
105 const s4 abi_registers_float_argument[] = {
113 const s4 abi_registers_float_saved[] = {
116 const s4 abi_registers_float_temporary[] = {
126 s4 nat_argintregs[] = {
127 REG_OUT0, REG_OUT1, REG_OUT2, REG_OUT3, REG_OUT4, REG_OUT5
131 /* md_param_alloc **************************************************************
133 Allocate Arguments to Stackslots according the Calling Conventions
136 md->paramcount: Number of arguments for this method
137 md->paramtypes[].type: Argument types
140 md->params[].inmemory: Argument spilled on stack
141 md->params[].regoff: Stack offset or rd->arg[int|flt]regs index
142 md->memuse: Stackslots needed for argument spilling
143 md->argintreguse: max number of integer arguments used
144 md->argfltreguse: max number of float arguments used
146 *******************************************************************************/
148 void md_param_alloc(methoddesc *md)
155 /* set default values */
160 /* get params field of methoddesc */
164 for (i = 0; i < md->paramcount; i++, pd++) {
165 switch (md->paramtypes[i].type) {
169 if (i < INT_ARG_CNT) {
170 pd->inmemory = false;
171 pd->regoff = abi_registers_integer_argument[reguse];
173 md->argintreguse = reguse;
177 pd->regoff = stacksize;
184 if (i < FLT_ARG_CNT) {
185 pd->inmemory = false;
186 pd->regoff = abi_registers_float_argument[reguse];
188 md->argfltreguse = reguse;
192 pd->regoff = stacksize;
199 /* Since O0 is used for passing return values, this */
200 /* argument register usage has to be regarded, too */
201 if (IS_INT_LNG_TYPE(md->returntype.type)) {
203 md->argintreguse = 1;
206 /* fill register and stack usage */
208 md->memuse = stacksize;
212 /* md_param_alloc_native *******************************************************
214 * Pre-allocate arguments according to the native ABI.
216 * *******************************************************************************/
218 void md_param_alloc_native(methoddesc *md)
225 /* set default values */
230 /* get params field of methoddesc */
234 for (i = 0; i < md->paramcount; i++, pd++) {
235 switch (md->paramtypes[i].type) {
239 if (i < INT_NATARG_CNT) {
240 pd->inmemory = false;
243 md->argintreguse = reguse;
254 if (i < FLT_NATARG_CNT) {
255 pd->inmemory = false;
258 md->argfltreguse = reguse;
269 /* Since O0 is used for passing return values, this */
270 /* argument register usage has to be regarded, too */
271 if (IS_INT_LNG_TYPE(md->returntype.type)) {
273 md->argintreguse = 1;
276 /* fill register and stack usage */
278 md->memuse = stacksize;
281 /* md_return_alloc *************************************************************
285 *******************************************************************************/
287 void md_return_alloc(jitdata *jd, stackptr stackslot)
294 * These are local overrides for various environment variables in Emacs.
295 * Please do not remove this and leave it at the end of the file, where
296 * Emacs will automagically detect them.
297 * ---------------------------------------------------------------------
300 * indent-tabs-mode: t