/* src/vm/jit/powerpc/darwin/md-abi.c - functions for PowerPC Darwin ABI
- Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
+ Copyright (C) 1996-2005, 2006, 2007 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
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Christian Thalinger
-
- Changes: Christian Ullrich
-
- $Id: md-abi.c 4384 2006-01-28 14:42:58Z twisti $
-
*/
#include "config.h"
-#include "vm/types.h"
+
+#include <stdint.h>
#include "vm/jit/powerpc/darwin/md-abi.h"
-#include "vm/descriptor.h"
#include "vm/global.h"
+#include "vm/jit/abi.h"
+
+#include "vmcore/descriptor.h"
+
-/* register descripton array **************************************************/
+/* register descripton arrays *************************************************/
-s4 nregdescint[] = {
+int nregdescint[] = {
/* zero, sp, t0, a0/v0, a0/v1, a2, a3, a4, */
REG_RES, REG_RES, REG_TMP, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG,
REG_END
};
+const char *abi_registers_integer_name[] = {
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+ "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+};
+
+const int abi_registers_integer_argument[] = {
+ 3, /* a0 */
+ 4, /* a1 */
+ 5, /* a2 */
+ 6, /* a3 */
+ 7, /* a4 */
+ 8, /* a5 */
+ 9, /* a6 */
+ 10, /* a7 */
+};
+
+const int abi_registers_integer_saved[] = {
+ 14, /* s0 */
+ 15, /* s1 */
+ 24, /* s2 */
+ 25, /* s3 */
+ 26, /* s4 */
+ 27, /* s5 */
+ 28, /* s6 */
+ 29, /* s7 */
+ 30, /* s8 */
+ 31, /* s9 */
+};
+
+const int abi_registers_integer_temporary[] = {
+ 2, /* t0 */
+ 17, /* t1 */
+ 18, /* t2 */
+ 19, /* t3 */
+ 20, /* t4 */
+ 21, /* t5 */
+ 22, /* t6 */
+ 23, /* t7 */
+};
-s4 nregdescfloat[] = {
+
+int nregdescfloat[] = {
/*ftmp3, fa0/v0, fa1, fa2, fa3, fa4, fa5, fa6, */
REG_RES, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG,
REG_END
};
+const int abi_registers_float_argument[] = {
+ 1, /* fa0 */
+ 2, /* fa1 */
+ 3, /* fa2 */
+ 4, /* fa3 */
+ 5, /* fa4 */
+ 6, /* fa5 */
+ 7, /* fa6 */
+ 8, /* fa7 */
+ 9, /* fa8 */
+ 10, /* fa9 */
+ 11, /* fa10 */
+ 12, /* fa11 */
+ 13, /* fa12 */
+};
+
+const int abi_registers_float_saved[] = {
+ 14, /* fs0 */
+ 15, /* fs1 */
+ 24, /* fs2 */
+ 25, /* fs3 */
+ 26, /* fs4 */
+ 27, /* fs5 */
+ 28, /* fs6 */
+ 29, /* fs7 */
+ 30, /* fs8 */
+ 31, /* fs9 */
+};
+
+const int abi_registers_float_temporary[] = {
+ 17, /* ft5 */
+ 18, /* ft6 */
+ 19, /* ft7 */
+ 20, /* ft8 */
+ 21, /* ft9 */
+ 22, /* ft10 */
+ 23, /* ft11 */
+};
+
/* md_param_alloc **************************************************************
void md_param_alloc(methoddesc *md)
{
paramdesc *pd;
- s4 i;
- s4 iarg;
- s4 farg;
- s4 stacksize;
+ int i;
+ int iarg;
+ int farg;
+ int stacksize;
+
+ /* set default values */
+
+ iarg = 0;
+ farg = 0;
+ stacksize = LA_SIZE_IN_POINTERS;
+
+ /* get params field of methoddesc */
+
+ pd = md->params;
+
+ for (i = 0; i < md->paramcount; i++, pd++) {
+ switch (md->paramtypes[i].type) {
+ case TYPE_INT:
+ case TYPE_ADR:
+ if (iarg < INT_ARG_CNT) {
+ pd->inmemory = false;
+ pd->index = iarg;
+ pd->regoff = abi_registers_integer_argument[iarg];
+ iarg++;
+ }
+ else {
+ pd->inmemory = true;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
+ stacksize++;
+ }
+ break;
+
+ case TYPE_LNG:
+ if (iarg < INT_ARG_CNT - 1) {
+ pd->inmemory = false;
+ pd->index = PACK_REGS(iarg + 1, iarg);
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[iarg + 1],
+ abi_registers_integer_argument[iarg]);
+ iarg += 2;
+ }
+ else {
+ pd->inmemory = true;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
+ iarg = INT_ARG_CNT;
+ stacksize++;
+ }
+ break;
+
+ case TYPE_FLT:
+ case TYPE_DBL:
+ if (farg < FLT_ARG_CNT) {
+ pd->inmemory = false;
+ pd->index = farg;
+ pd->regoff = abi_registers_float_argument[farg];
+ farg++;
+ }
+ else {
+ pd->inmemory = true;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
+ stacksize++;
+ }
+ break;
+ }
+ }
+
+
+ /* Since R3/R4, F1 (==A0/A1, A0) are used for passing return values, this */
+ /* argument register usage has to be regarded, too */
+
+ if (IS_INT_LNG_TYPE(md->returntype.type)) {
+ if (iarg < (IS_2_WORD_TYPE(md->returntype.type) ? 2 : 1))
+ iarg = IS_2_WORD_TYPE(md->returntype.type) ? 2 : 1;
+ }
+ else {
+ 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_param_alloc_native *******************************************************
+
+ Pre-allocate arguments according the native ABI.
+
+*******************************************************************************/
+
+void md_param_alloc_native(methoddesc *md)
+{
+ paramdesc *pd;
+ int i;
+ int iarg;
+ int farg;
+ int stacksize;
/* set default values */
- iarg = 0;
- farg = 0;
- stacksize = LA_WORD_SIZE;
+ iarg = 0;
+ farg = 0;
+ stacksize = LA_SIZE_IN_POINTERS;
/* get params field of methoddesc */
case TYPE_ADR:
if (iarg < INT_ARG_CNT) {
pd->inmemory = false;
- pd->regoff = iarg; /* rd->arg[int|flt]regs index !! */
+ pd->regoff = abi_registers_integer_argument[iarg];
iarg++;
- } else {
+ }
+ else {
pd->inmemory = true;
- pd->regoff = stacksize;
+ pd->regoff = stacksize * 4;
}
stacksize++;
break;
+
case TYPE_LNG:
if (iarg < INT_ARG_CNT - 1) {
pd->inmemory = false;
- /* rd->arg[int|flt]regs index !! */
- pd->regoff = PACK_REGS(iarg + 1, iarg);
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[iarg + 1],
+ abi_registers_integer_argument[iarg]);
iarg += 2;
- } else {
+ }
+ else {
pd->inmemory = true;
- pd->regoff = stacksize;
- iarg = INT_ARG_CNT;
+ pd->regoff = stacksize * 4;
+ iarg = INT_ARG_CNT;
}
stacksize += 2;
break;
+
case TYPE_FLT:
if (farg < FLT_ARG_CNT) {
pd->inmemory = false;
- pd->regoff = farg; /* rd->arg[int|flt]regs index !! */
- iarg++; /* skip 1 integer argument register */
+ pd->regoff = abi_registers_float_argument[farg];
+ iarg++; /* skip 1 integer argument register */
farg++;
- } else {
+ }
+ else {
pd->inmemory = true;
- pd->regoff = stacksize;
+ pd->regoff = stacksize * 4;
}
stacksize++;
break;
+
case TYPE_DBL:
if (farg < FLT_ARG_CNT) {
pd->inmemory = false;
- pd->regoff = farg; /* rd->arg[int|flt]regs index !! */
- iarg += 2; /* skip 2 integer argument registers */
+ pd->regoff = abi_registers_float_argument[farg];
+ iarg += 2; /* skip 2 integer argument registers */
farg++;
- } else {
+ }
+ else {
pd->inmemory = true;
- pd->regoff = stacksize;
+ pd->regoff = stacksize * 4;
}
stacksize += 2;
break;
/* Since R3/R4, F1 (==A0/A1, A0) are used for passing return values, this */
/* argument register usage has to be regarded, too */
+
if (IS_INT_LNG_TYPE(md->returntype.type)) {
if (iarg < (IS_2_WORD_TYPE(md->returntype.type) ? 2 : 1))
iarg = IS_2_WORD_TYPE(md->returntype.type) ? 2 : 1;
- } else {
+ }
+ else {
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;
}
for float/double)
--- in
- m: Methodinfo of current method
- return_type: Return Type of the Method (TYPE_INT.. TYPE_ADR)
- TYPE_VOID is not allowed!
+ jd: jitdata of the current method
stackslot: Java Stackslot to contain the Return Value
--- out
if precoloring was possible:
- stackslot->varkind =ARGVAR
- ->varnum =-1
- ->flags =0
- ->regoff =[REG_RESULT, (REG_RESULT2/REG_RESULT), REG_FRESULT]
+ VAR(stackslot->varnum)->flags = PREALLOC
+ ->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(methodinfo *m, registerdata *rd, s4 return_type,
- stackptr stackslot)
+void md_return_alloc(jitdata *jd, stackptr stackslot)
{
+ methodinfo *m;
+ registerdata *rd;
+ methoddesc *md;
+
+ /* get required compiler data */
+
+ m = jd->m;
+ rd = jd->rd;
+
+ md = m->parseddesc;
+
/* In Leafmethods Local Vars holding parameters are precolored to
their argument register -> so leafmethods with paramcount > 0
could already use R3 == a00! */
- if (!m->isleafmethod || (m->parseddesc->paramcount == 0)) {
+ if (!jd->isleafmethod || (md->paramcount == 0)) {
/* Only precolor the stackslot, if it is not a SAVEDVAR <->
has not to survive method invokations. */
if (!(stackslot->flags & SAVEDVAR)) {
- stackslot->varkind = ARGVAR;
- stackslot->varnum = -1;
- stackslot->flags = 0;
- if (IS_INT_LNG_TYPE(return_type)) {
- if (!IS_2_WORD_TYPE(return_type)) {
+ VAR(stackslot->varnum)->flags = PREALLOC;
+
+ if (IS_INT_LNG_TYPE(md->returntype.type)) {
+ if (!IS_2_WORD_TYPE(md->returntype.type)) {
if (rd->argintreguse < 1)
rd->argintreguse = 1;
- stackslot->regoff = REG_RESULT;
-
- } else {
+ VAR(stackslot->varnum)->vv.regoff = REG_RESULT;
+ }
+ else {
if (rd->argintreguse < 2)
rd->argintreguse = 2;
- stackslot->regoff = PACK_REGS(REG_RESULT2, REG_RESULT);
+ VAR(stackslot->varnum)->vv.regoff = REG_RESULT_PACKED;
}
-
- } else { /* float/double */
+ }
+ else {
if (rd->argfltreguse < 1)
rd->argfltreguse = 1;
- stackslot->regoff = REG_FRESULT;
+ VAR(stackslot->varnum)->vv.regoff = REG_FRESULT;
}
}
}
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