/* src/vm/jit/arm/md-abi.c - functions for arm ABI
- Copyright (C) 1996-2005, 2006 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.
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- Contact: cacao@cacaojvm.org
-
- Authors: Michael Starzinger
-
- Changes: Christian Thalinger
-
- $Id: md-abi.c 6548 2006-10-01 22:18:38Z edwin $
-
*/
#include "vm/descriptor.h"
#include "vm/global.h"
+
#include "vm/jit/abi.h"
REG_END
};
+const char *abi_registers_integer_name[] = {
+ "a1", "a2", "a3", "a4", "v1", "v2", "v3", "v4",
+ "v5", "t3", "t1", "t2", "ip", "sp", "lr", "pc",
+};
+
+const s4 abi_registers_integer_argument[] = {
+ 0, /* a0 */
+ 1, /* a1 */
+ 2, /* a2 */
+ 3, /* a3 */
+ REG_SPLIT,
+};
+
+const s4 abi_registers_integer_saved[] = {
+ 4, /* s0 */
+ 5, /* s1 */
+ 6, /* s2 */
+ 7, /* s3 */
+ 8, /* s4 */
+};
+
+const s4 abi_registers_integer_temporary[] = {
+ -1,
+};
+
+
#if defined(ENABLE_SOFTFLOAT)
s4 nregdescfloat[] = {
REG_RES, REG_RES, REG_RES, REG_RES,
};
#endif /* defined(ENABLE_SOFTFLOAT) */
+const s4 abi_registers_float_argument[] = {
+ -1,
+};
+
+const s4 abi_registers_float_saved[] = {
+ -1,
+};
+
+const s4 abi_registers_float_temporary[] = {
+#if defined(ENABLE_SOFTFLOAT)
+ -1,
+#else
+ 0, /* ft0 */
+ 1, /* ft1 */
+ 2, /* ft2 */
+ 3, /* ft3 */
+ 4, /* ft4 */
+ 5, /* ft5 */
+#endif
+};
+
/* md_param_alloc **************************************************************
s4 stacksize;
/* set default values */
- reguse = 0;
+
+ reguse = 0;
stacksize = 0;
/* get params field of methoddesc */
+
pd = md->params;
for (i = 0; i < md->paramcount; i++, pd++) {
case TYPE_FLT:
if (reguse < INT_ARG_CNT) {
pd->inmemory = false;
- pd->regoff = reguse;
+ pd->index = reguse;
+ pd->regoff = abi_registers_integer_argument[reguse];
reguse++;
}
else {
pd->inmemory = true;
- pd->regoff = stacksize;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
stacksize++;
}
break;
case TYPE_LNG:
case TYPE_DBL:
- if (reguse+1 < INT_ARG_CNT) {
+ /* interally we use the EABI */
+
+ ALIGN_2(reguse);
+
+ if (reguse < INT_ARG_CNT) {
pd->inmemory = false;
#if defined(__ARMEL__)
- pd->regoff = PACK_REGS(reguse, reguse+1);
+ pd->index = PACK_REGS(reguse, reguse + 1);
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[reguse],
+ abi_registers_integer_argument[reguse + 1]);
#else
- pd->regoff = PACK_REGS(reguse+1, reguse);
+ pd->index = PACK_REGS(reguse + 1, reguse);
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[reguse + 1],
+ abi_registers_integer_argument[reguse]);
#endif
reguse += 2;
}
- else if (reguse < INT_ARG_CNT) {
+ else {
+
+ /*ALIGN_2(stacksize);*/
+
+ pd->inmemory = true;
+ pd->index = stacksize;
+ pd->regoff = stacksize * 8;
+ /*stacksize += 2;*/
+ stacksize++;
+ }
+ break;
+ }
+ }
+
+ /* Since R0/R1 (==A0/A1) are used for passing return values, this
+ argument register usage has to be regarded, too. */
+
+ if (md->returntype.type != TYPE_VOID) {
+ if (!IS_2_WORD_TYPE(md->returntype.type)) {
+ if (reguse < 1)
+ reguse = 1;
+ }
+ else {
+ if (reguse < 2)
+ reguse = 2;
+ }
+ }
+
+ /* fill register and stack usage */
+
+ md->argintreguse = reguse;
+ md->argfltreguse = 0;
+ md->memuse = stacksize;
+}
+
+
+/* md_param_alloc_native *******************************************************
+
+ Pre-allocate arguments according the native ABI.
+
+*******************************************************************************/
+
+void md_param_alloc_native(methoddesc *md)
+{
+ paramdesc *pd;
+ s4 i;
+ s4 reguse;
+ s4 stacksize;
+
+ /* set default values */
+
+ reguse = 0;
+ stacksize = 0;
+
+ /* 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:
+ case TYPE_FLT:
+ if (reguse < INT_ARG_CNT) {
+ pd->inmemory = false;
+ pd->index = -1;
+ pd->regoff = abi_registers_integer_argument[reguse];
+ reguse++;
+ }
+ else {
+ pd->inmemory = true;
+ pd->index = -1;
+ pd->regoff = stacksize * 4;
+ stacksize++;
+ }
+ break;
+
+ case TYPE_LNG:
+ case TYPE_DBL:
+ if (reguse < (INT_ARG_CNT - 1)) {
+#if defined(__ARM_EABI__)
+ ALIGN_2(reguse);
+#endif
pd->inmemory = false;
#if defined(__ARMEL__)
- pd->regoff = PACK_REGS(reguse, INT_ARG_CNT);
+ pd->index = -1;
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[reguse],
+ abi_registers_integer_argument[reguse + 1]);
#else
- pd->regoff = PACK_REGS(INT_ARG_CNT, reguse);
+ pd->index = -1;
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[reguse + 1],
+ abi_registers_integer_argument[reguse]);
#endif
+ reguse += 2;
+ }
+#if !defined(__ARM_EABI__)
+ else if (reguse < INT_ARG_CNT) {
+ pd->inmemory = false;
+# if defined(__ARMEL__)
+ pd->index = -1;
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[reguse],
+ abi_registers_integer_argument[INT_ARG_CNT]);
+# else
+ pd->index = -1;
+ pd->regoff =
+ PACK_REGS(abi_registers_integer_argument[INT_ARG_CNT],
+ abi_registers_integer_argument[reguse]);
+# endif
reguse++;
stacksize++;
}
+#endif
else {
- pd->inmemory = true;
- pd->regoff = stacksize;
- stacksize += 2;
+#if defined(__ARM_EABI__)
+ ALIGN_2(stacksize);
+#endif
+ pd->inmemory = true;
+ pd->index = -1;
+ pd->regoff = stacksize * 4;
+ reguse = INT_ARG_CNT;
+ stacksize += 2;
}
break;
}
*******************************************************************************/
-void md_return_alloc(jitdata *jd, stackptr stackslot)
+void md_return_alloc(jitdata *jd, stackelement_t *stackslot)
{
methodinfo *m;
+ codeinfo *code;
registerdata *rd;
methoddesc *md;
/* get required compiler data */
- m = jd->m;
- rd = jd->rd;
+ m = jd->m;
+ code = jd->code;
+ rd = jd->rd;
md = m->parseddesc;
their argument register -> so leafmethods with paramcount > 0
could already use R0 == a00! */
- if (!jd->isleafmethod || (md->paramcount == 0)) {
+ if (!code_is_leafmethod(code) || (md->paramcount == 0)) {
/* Only precolor the stackslot, if it is not a SAVEDVAR <->
has not to survive method invokations. */
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