/* src/vm/jit/x86_64/md-abi.c - functions for x86_64 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 Thalinger
- Changes:
+#include "config.h"
+#include "vm/types.h"
- $Id: md-abi.c 2588 2005-06-08 10:58:04Z twisti $
+#include "vm/jit/x86_64/md-abi.h"
-*/
+#include "vm/descriptor.hpp"
+#include "vm/global.h"
+#include "vm/jit/abi.h"
+#include "vm/jit/jit.hpp" /* for REG_* (maybe can be removed) */
+#include "vm/jit/stack.h"
-#include "vm/jit/x86_64/types.h"
-#include "vm/jit/x86_64/md-abi.h"
-#include "vm/descriptor.h"
-#include "vm/global.h"
+/* register descripton array **************************************************/
+
+s4 nregdescint[] = {
+ REG_RET, REG_ARG, REG_ARG, REG_TMP, REG_RES, REG_SAV, REG_ARG, REG_ARG,
+ REG_ARG, REG_ARG, REG_RES, REG_RES, REG_SAV, REG_SAV, REG_SAV, REG_SAV,
+ REG_END
+};
+
+const char *abi_registers_integer_name[] = {
+ "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15"
+};
+
+const s4 abi_registers_integer_argument[] = {
+ 7, /* a0 */
+ 6, /* a1 */
+ 2, /* a2 */
+ 1, /* a3 */
+ 8, /* a4 */
+ 9, /* a5 */
+};
+
+const s4 abi_registers_integer_saved[] = {
+ 5, /* s0 */
+ 12, /* s1 */
+ 13, /* s2 */
+ 14, /* s3 */
+ 15, /* s4 */
+};
+
+const s4 abi_registers_integer_temporary[] = {
+ 3, /* t0 */
+};
+
+
+/* float registers *************************************************************
+
+ xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7,
+ (fa0) (fa1) (fa2) (fa3) (fa4) (fa5) (fa6) (fa7)
+
+ xmm8, xmm9, xmm10, xmm11, xmm12, xmm13, xmm14, xmm15
+ (ftmp1) (ftmp2) (ftmp3) (ft0) (ft1) (ft2) (ft3) (ft4)
+
+*******************************************************************************/
+
+s4 nregdescfloat[] = {
+ REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG,
+ REG_RES, REG_RES, REG_RES, REG_TMP, REG_TMP, REG_TMP, REG_TMP, REG_TMP,
+ REG_END
+};
+
+
+const s4 abi_registers_float_argument[] = {
+ 0, /* fa0 */
+ 1, /* fa1 */
+ 2, /* fa2 */
+ 3, /* fa3 */
+ 4, /* fa4 */
+ 5, /* fa5 */
+ 6, /* fa6 */
+ 7, /* fa7 */
+};
+
+const s4 abi_registers_float_saved[] = {
+ -1,
+};
+
+const s4 abi_registers_float_temporary[] = {
+ 11, /* ft0 */
+ 12, /* ft1 */
+ 13, /* ft2 */
+ 14, /* ft3 */
+ 15, /* ft4 */
+};
/* md_param_alloc **************************************************************
/* set default values */
- iarg = 0;
- farg = 0;
+ iarg = 0;
+ farg = 0;
stacksize = 0;
/* get params field of methoddesc */
case TYPE_LNG:
if (iarg < INT_ARG_CNT) {
pd->inmemory = false;
- pd->regoff = iarg;
-
- } else {
- pd->inmemory = true;
- pd->regoff = stacksize;
- }
- if (iarg < INT_ARG_CNT)
+ pd->index = iarg;
+ pd->regoff = abi_registers_integer_argument[iarg];
iarg++;
- else
+ }
+ else {
+ pd->inmemory = true;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
stacksize++;
+ }
break;
+
case TYPE_FLT:
case TYPE_DBL:
if (farg < FLT_ARG_CNT) {
pd->inmemory = false;
- pd->regoff = farg;
- } else {
- pd->inmemory = true;
- pd->regoff = stacksize;
- }
- if (farg < FLT_ARG_CNT)
+ pd->index = farg;
+ pd->regoff = abi_registers_float_argument[farg];
farg++;
- else
+ }
+ else {
+ pd->inmemory = true;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
stacksize++;
+ }
break;
}
}
+ /* Since XMM0 (==A0) is used for passing return values, this
+ argument register usage has to be regarded, too. */
+
+ if (IS_FLT_DBL_TYPE(md->returntype.type))
+ if (farg < 1)
+ farg = 1;
+
/* fill register and stack usage */
md->argintreguse = iarg;
md->argfltreguse = farg;
- md->memuse = stacksize;
+ md->memuse = stacksize;
+}
+
+
+/* md_param_alloc_native *******************************************************
+
+ Pre-allocate arguments according the native ABI.
+
+*******************************************************************************/
+
+void md_param_alloc_native(methoddesc *md)
+{
+ /* On x86_64 we use the same ABI for JIT method calls as for
+ native method calls. */
+
+ md_param_alloc(md);
+}
+
+
+/* md_return_alloc *************************************************************
+
+ Precolor the Java Stackelement containing the Return Value. Only
+ for float/ double types straight forward possible, since INT_LNG
+ types use "reserved" registers Float/Double values use a00 as
+ return register.
+
+ --- in
+ jd: jitdata of the current method
+ stackslot: Java Stackslot to contain the Return Value
+
+ --- out
+ if precoloring was possible:
+ VAR(stackslot->varnum)->flags = PREALLOC
+ ->vv.regoff = [REG_RESULT|REG_FRESULT]
+ rd->arg[flt|int]reguse set to a value according the register usage
+
+ NOTE: Do not pass a LOCALVAR in stackslot->varnum.
+
+*******************************************************************************/
+
+void md_return_alloc(jitdata *jd, stackelement_t *stackslot)
+{
+ methodinfo *m;
+ codeinfo *code;
+ registerdata *rd;
+ methoddesc *md;
+
+ /* get required compiler data */
+
+ m = jd->m;
+ code = jd->code;
+ rd = jd->rd;
+
+ md = m->parseddesc;
+
+ /* precoloring only straightforward possible with flt/dbl types
+ For Address/Integer/Long REG_RESULT == rax == REG_ITMP1 and so
+ could be destroyed if the return value Stack Slot "lives too
+ long" */
+
+ if (IS_FLT_DBL_TYPE(md->returntype.type)) {
+ /* In Leafmethods Local Vars holding parameters are precolored
+ to their argument register -> so leafmethods with
+ paramcount > 0 could already use a00! */
+
+ if (!code_is_leafmethod(code) || (md->paramcount == 0)) {
+ /* Only precolor the stackslot, if it is not a SAVEDVAR
+ <-> has not to survive method invokations */
+
+ if (!(stackslot->flags & SAVEDVAR)) {
+
+ VAR(stackslot->varnum)->flags = PREALLOC;
+
+ /* float/double */
+ if (rd->argfltreguse < 1)
+ rd->argfltreguse = 1;
+
+ VAR(stackslot->varnum)->vv.regoff = REG_FRESULT;
+ }
+ }
+ }
}
* c-basic-offset: 4
* tab-width: 4
* End:
+ * vim:noexpandtab:sw=4:ts=4:
*/
projects / cacao.git / blobdiff