/* 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
Changes: Christian Ullrich
- $Id: md-abi.c 4357 2006-01-22 23:33:38Z twisti $
+ $Id: md-abi.c 7770 2007-04-19 19:39:06Z twisti $
*/
#include "vm/jit/powerpc/darwin/md-abi.h"
-#include "vm/descriptor.h"
#include "vm/global.h"
+#include "vm/jit/abi.h"
-/* register descripton array **************************************************/
+#include "vmcore/descriptor.h"
+
+
+/* register descripton arrays *************************************************/
s4 nregdescint[] = {
/* zero, sp, t0, a0/v0, a0/v1, a2, a3, a4, */
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 s4 abi_registers_integer_argument[] = {
+ 3, /* a0 */
+ 4, /* a1 */
+ 5, /* a2 */
+ 6, /* a3 */
+ 7, /* a4 */
+ 8, /* a5 */
+ 9, /* a6 */
+ 10, /* a7 */
+};
+
+const s4 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 s4 abi_registers_integer_temporary[] = {
+ 2, /* t0 */
+ 17, /* t1 */
+ 18, /* t2 */
+ 19, /* t3 */
+ 20, /* t4 */
+ 21, /* t5 */
+ 22, /* t6 */
+ 23, /* t7 */
+};
+
s4 nregdescfloat[] = {
/*ftmp3, fa0/v0, fa1, fa2, fa3, fa4, fa5, fa6, */
REG_END
};
+const s4 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 s4 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 s4 abi_registers_float_temporary[] = {
+ 17, /* ft5 */
+ 18, /* ft6 */
+ 19, /* ft7 */
+ 20, /* ft8 */
+ 21, /* ft9 */
+ 22, /* ft10 */
+ 23, /* ft11 */
+};
+
/* md_param_alloc **************************************************************
/* 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;
}
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;
+ 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;
}
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;
}
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;
+}
+
+
+/* md_param_alloc_native *******************************************************
+
+ Pre-allocate arguments according the native ABI.
+
+*******************************************************************************/
+
+void md_param_alloc_native(methoddesc *md)
+{
+ /* On PowerPC we use the same ABI for JIT method calls as for
+ native method calls. */
+
+ md_param_alloc(md);
}
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)
{
- /* In Leafmethods Local Vars holding parameters are precolored to their */
- /* argument register -> so leafmethods with paramcount > 0 could already */
- /* use R3 == a00! */
+ 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->paramcount == 0)) {
- /* Only precolor the stackslot, if it is not a SAVEDVAR <-> has not */
- /* to survive method invokations */
+ 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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