Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: md-abi.c 7330 2007-02-11 21:39:54Z twisti $
-
*/
#include "config.h"
#include <assert.h>
-
-#include "vm/types.h"
+#include <stdint.h>
#include "vm/jit/powerpc/linux/md-abi.h"
#include "vmcore/descriptor.h"
-#define _ALIGN(a) do { if ((a) & 1) (a)++; } while (0)
-
-
/* register descripton arrays *************************************************/
-s4 nregdescint[] = {
+int nregdescint[] = {
/* zero, sp, NO(sys), a0/v0, a1/v1, a2, a3, a4, */
REG_RES, REG_RES, REG_RES, REG_ARG, REG_ARG, REG_ARG, REG_ARG, REG_ARG,
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
};
-const s4 abi_registers_integer_argument[] = {
+const int abi_registers_integer_argument[] = {
3, /* a0 */
4, /* a1 */
5, /* a2 */
10, /* a7 */
};
-const s4 abi_registers_integer_saved[] = {
+const int abi_registers_integer_saved[] = {
14, /* s0 */
15, /* s1 */
24, /* s2 */
31, /* s9 */
};
-const s4 abi_registers_integer_temporary[] = {
+const int abi_registers_integer_temporary[] = {
17, /* t0 */
18, /* t1 */
19, /* t2 */
};
-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,
};
-const s4 abi_registers_float_argument[] = {
+const int abi_registers_float_argument[] = {
1, /* fa0 */
2, /* fa1 */
3, /* fa2 */
8, /* fa7 */
};
-const s4 abi_registers_float_saved[] = {
+const int abi_registers_float_saved[] = {
14, /* fs0 */
15, /* fs1 */
24, /* fs2 */
31, /* fs9 */
};
-const s4 abi_registers_float_temporary[] = {
+const int abi_registers_float_temporary[] = {
9, /* ft0 */
10, /* ft1 */
11, /* ft2 */
12, /* ft3 */
13, /* ft4 */
- 17, /* ft5 */
- 18, /* ft6 */
- 19, /* ft7 */
- 20, /* ft8 */
- 21, /* ft9 */
- 22, /* ft10 */
- 23, /* ft11 */
+ 18, /* ft5 */
+ 19, /* ft6 */
+ 20, /* ft7 */
+ 21, /* ft8 */
+ 22, /* ft9 */
+ 23, /* ft10 */
};
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) {
+ ALIGN_2(iarg);
+ 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;
+
+ default:
+ assert(0);
+ }
+ }
+
+ /* 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 */
case TYPE_ADR:
if (iarg < INT_ARG_CNT) {
pd->inmemory = false;
-/* pd->regoff = abi_registers_integer_argument[iarg]; */
- pd->regoff = iarg;
+ pd->regoff = abi_registers_integer_argument[iarg];
iarg++;
}
else {
pd->inmemory = true;
- pd->regoff = stacksize;
+ pd->regoff = stacksize * 4;
stacksize++;
}
break;
case TYPE_LNG:
if (iarg < INT_ARG_CNT - 1) {
- _ALIGN(iarg);
+ ALIGN_2(iarg);
pd->inmemory = false;
-/* pd->regoff = */
-/* PACK_REGS(abi_registers_integer_argument[iarg + 1], */
-/* abi_registers_integer_argument[iarg]); */
- 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 {
- _ALIGN(stacksize);
+ ALIGN_2(stacksize);
pd->inmemory = true;
- pd->regoff = stacksize;
+ pd->regoff = stacksize * 4;
iarg = INT_ARG_CNT;
stacksize += 2;
}
case TYPE_FLT:
if (farg < FLT_ARG_CNT) {
pd->inmemory = false;
-/* pd->regoff = abi_registers_float_argument[farg]; */
- pd->regoff = farg;
+ pd->regoff = abi_registers_float_argument[farg];
farg++;
}
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 = abi_registers_integer_argument[farg]; */
- pd->regoff = farg;
+ pd->regoff = abi_registers_float_argument[farg];
farg++;
}
else {
- _ALIGN(stacksize);
+ ALIGN_2(stacksize);
pd->inmemory = true;
- pd->regoff = stacksize;
+ pd->regoff = stacksize * 4;
stacksize += 2;
}
break;
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)
-{
- /* On PowerPC we use the same ABI for JIT method calls as for
- native method calls. */
-
- md_param_alloc(md);
+ md->memuse = stacksize;
}
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