/* src/vm/jit/i386/md-abi.c - functions for i386 Linux ABI
- Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
- R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
- C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
- Institut f. Computersprachen - TU Wien
+ Copyright (C) 1996-2005, 2006, 2007, 2008
+ CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
This file is part of CACAO.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA.
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
- Contact: cacao@complang.tuwien.ac.at
+*/
- Authors: Christian Ullrich
- Changes: Christian Thalinger
+#include "config.h"
+#include "vm/types.h"
- $Id: md-abi.c 2775 2005-06-22 09:48:28Z christian $
+#include "vm/jit/i386/md-abi.h"
-*/
+#include "vm/descriptor.hpp"
+#include "vm/global.h"
+#include "vm/jit/abi.h"
-#include "vm/jit/i386/types.h"
-#include "vm/jit/i386/md-abi.h"
-#include "vm/descriptor.h"
-#include "vm/global.h"
+/* register descripton - array ************************************************/
+s4 nregdescint[] = {
+ REG_RET, REG_RES, REG_RES, REG_TMP, REG_RES, REG_SAV, REG_SAV, REG_SAV,
+ REG_END
+};
+
+const char *abi_registers_integer_name[] = {
+ "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi"
+};
+
+const s4 abi_registers_integer_argument[] = {
+ -1,
+};
+
+const s4 abi_registers_integer_saved[] = {
+ 5, /* s0 */
+ 6, /* s1 */
+ 7, /* s2 */
+};
+
+const s4 abi_registers_integer_temporary[] = {
+ 3, /* t0 */
+};
-/* md_param_alloc **************************************************************
-Allocate Arguments to Stackslots according the Calling Conventions
+s4 nregdescfloat[] = {
+ /* rounding problems with callee saved registers */
+ /* REG_SAV, REG_SAV, REG_SAV, REG_SAV, REG_TMP, REG_TMP, REG_RES, REG_RES, */
+ /* REG_TMP, REG_TMP, REG_TMP, REG_TMP, REG_TMP, REG_TMP, REG_RES, REG_RES, */
+ REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES, REG_RES,
+ REG_END
+};
---- in
-md->paramcount: Number of arguments for this method
-md->paramtypes[].type: Argument types
+const s4 abi_registers_float_argument[] = {
+ -1,
+};
---- out
-md->params[].inmemory: Argument spilled on stack
-md->params[].regoff: Stack offset or rd->arg[int|flt]regs index
-md->memuse: Stackslots needed for argument spilling
-md->argintreguse: max number of integer arguments used
-md->argfltreguse: max number of float arguments used
+const s4 abi_registers_float_saved[] = {
+ -1,
+};
+
+const s4 abi_registers_float_temporary[] = {
+ -1,
+};
+
+
+/* md_param_alloc **************************************************************
+
+ Allocate Arguments to Stackslots according the Calling Conventions
+
+ --- in
+ md->paramcount: Number of arguments for this method
+ md->paramtypes[].type: Argument types
+
+ --- out
+ md->params[].inmemory: Argument spilled on stack
+ md->params[].regoff: Stack offset or rd->arg[int|flt]regs index
+ md->memuse: Stackslots needed for argument spilling
+ md->argintreguse: max number of integer arguments used
+ md->argfltreguse: max number of float arguments used
*******************************************************************************/
void md_param_alloc(methoddesc *md)
{
paramdesc *pd;
- s4 stacksize;
- s4 i;
+ int stacksize;
+ int i;
pd = md->params;
stacksize = 0;
for (i = 0; i < md->paramcount; i++, pd++) {
pd->inmemory = true;
- pd->regoff = stacksize;
- stacksize += IS_2_WORD_TYPE(md->paramtypes[i].type) ? 2 : 1;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
+ stacksize++;
}
- md->memuse = stacksize;
+ md->memuse = stacksize;
md->argintreguse = 0;
md->argfltreguse = 0;
}
+/* md_param_alloc_native *******************************************************
+
+ Pre-allocate arguments according the native ABI.
+
+*******************************************************************************/
+
+void md_param_alloc_native(methoddesc *md)
+{
+ paramdesc *pd;
+ int stacksize;
+ int i;
+
+ pd = md->params;
+ stacksize = 0;
+
+ for (i = 0; i < md->paramcount; i++, pd++) {
+ pd->inmemory = true;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 4;
+ stacksize += IS_2_WORD_TYPE(md->paramtypes[i].type) ? 2 : 1;
+ }
+
+ md->memuse = stacksize;
+ md->argintreguse = 0;
+ md->argfltreguse = 0;
+}
+
+
+/* md_return_alloc *************************************************************
+
+ No straight forward precoloring of the Java Stackelement containing
+ the return value possible for i386, since it uses "reserved"
+ registers for return values
+
+*******************************************************************************/
+
+void md_return_alloc(jitdata *jd, stackelement_t *stackslot)
+{
+ /* nothing */
+}
+
+
/*
* These are local overrides for various environment variables in Emacs.
* Please do not remove this and leave it at the end of the file, where
* c-basic-offset: 4
* tab-width: 4
* End:
+ * vim:noexpandtab:sw=4:ts=4:
*/
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