/* src/vm/jit/mips/emit.c - MIPS code emitter functions

   Copyright (C) 1996-2005, 2006, 2007, 2008
   CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO

   This file is part of CACAO.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License as
   published by the Free Software Foundation; either version 2, or (at
   your option) any later version.

   This program is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   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., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301, USA.

*/


#include "config.h"

#include <assert.h>

#include "vm/types.h"

#include "vm/jit/mips/codegen.h"
#include "vm/jit/mips/md-abi.h"

#include "mm/memory.hpp"

#include "threads/lock.hpp"

#include "vm/jit/builtin.hpp"
#include "vm/options.h"

#include "vm/jit/abi.h"
#include "vm/jit/abi-asm.h"
#include "vm/jit/asmpart.h"
#include "vm/jit/dseg.h"
#include "vm/jit/emit-common.hpp"
#include "vm/jit/jit.hpp"
#include "vm/jit/patcher-common.hpp"
#include "vm/jit/replace.hpp"
#include "vm/jit/trace.hpp"
#include "vm/jit/trap.hpp"


/* emit_load *******************************************************************

   Emits a possible load of an operand.

*******************************************************************************/

s4 emit_load(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
{
	codegendata  *cd;
	s4            disp;
	s4            reg;

	/* get required compiler data */

	cd = jd->cd;

	if (src->flags & INMEMORY) {
		COUNT_SPILLS;

		disp = src->vv.regoff;

		switch (src->type) {
#if SIZEOF_VOID_P == 8
		case TYPE_INT:
		case TYPE_LNG:
		case TYPE_ADR:
			M_LLD(tempreg, REG_SP, disp);
			break;
#else
		case TYPE_INT:
		case TYPE_ADR:
			M_ILD(tempreg, REG_SP, disp);
			break;
		case TYPE_LNG:
			M_LLD(tempreg, REG_SP, disp);
			break;
#endif
		case TYPE_FLT:
			M_FLD(tempreg, REG_SP, disp);
			break;
		case TYPE_DBL:
			M_DLD(tempreg, REG_SP, disp);
			break;
		default:
			vm_abort("emit_load: unknown type %d", src->type);
		}

		reg = tempreg;
	}
	else
		reg = src->vv.regoff;

	return reg;
}


/* emit_load_low ***************************************************************

   Emits a possible load of the low 32-bits of an operand.

*******************************************************************************/

#if SIZEOF_VOID_P == 4
s4 emit_load_low(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
{
	codegendata  *cd;
	s4            disp;
	s4            reg;

	assert(src->type == TYPE_LNG);

	/* get required compiler data */

	cd = jd->cd;

	if (src->flags & INMEMORY) {
		COUNT_SPILLS;

		disp = src->vv.regoff;

#if WORDS_BIGENDIAN == 1
		M_ILD(tempreg, REG_SP, disp + 4);
#else
		M_ILD(tempreg, REG_SP, disp);
#endif

		reg = tempreg;
	}
	else
		reg = GET_LOW_REG(src->vv.regoff);

	return reg;
}
#endif /* SIZEOF_VOID_P == 4 */


/* emit_load_high **************************************************************

   Emits a possible load of the high 32-bits of an operand.

*******************************************************************************/

#if SIZEOF_VOID_P == 4
s4 emit_load_high(jitdata *jd, instruction *iptr, varinfo *src, s4 tempreg)
{
	codegendata  *cd;
	s4            disp;
	s4            reg;

	assert(src->type == TYPE_LNG);

	/* get required compiler data */

	cd = jd->cd;

	if (src->flags & INMEMORY) {
		COUNT_SPILLS;

		disp = src->vv.regoff;

#if WORDS_BIGENDIAN == 1
		M_ILD(tempreg, REG_SP, disp);
#else
		M_ILD(tempreg, REG_SP, disp + 4);
#endif

		reg = tempreg;
	}
	else
		reg = GET_HIGH_REG(src->vv.regoff);

	return reg;
}
#endif /* SIZEOF_VOID_P == 4 */


/* emit_store ******************************************************************

   Emits a possible store to variable.

*******************************************************************************/

void emit_store(jitdata *jd, instruction *iptr, varinfo *dst, s4 d)
{
	codegendata  *cd;
	s4            disp;

	/* get required compiler data */

	cd = jd->cd;

	if (dst->flags & INMEMORY) {
		COUNT_SPILLS;

		disp = dst->vv.regoff;

		switch (dst->type) {
#if SIZEOF_VOID_P == 8
		case TYPE_INT:
		case TYPE_LNG:
		case TYPE_ADR:
			M_LST(d, REG_SP, disp);
			break;
#else
		case TYPE_INT:
		case TYPE_ADR:
			M_IST(d, REG_SP, disp);
			break;
		case TYPE_LNG:
			M_LST(d, REG_SP, disp);
			break;
#endif
		case TYPE_FLT:
			M_FST(d, REG_SP, disp);
			break;
		case TYPE_DBL:
			M_DST(d, REG_SP, disp);
			break;
		default:
			vm_abort("emit_store: unknown type %d", dst->type);
		}
	}
}


/* emit_copy *******************************************************************

   Generates a register/memory to register/memory copy.

*******************************************************************************/

void emit_copy(jitdata *jd, instruction *iptr)
{
	codegendata *cd;
	varinfo     *src;
	varinfo     *dst;
	s4           s1, d;

	/* get required compiler data */

	cd = jd->cd;

	/* get source and destination variables */

	src = VAROP(iptr->s1);
	dst = VAROP(iptr->dst);

	if ((src->vv.regoff != dst->vv.regoff) ||
		((src->flags ^ dst->flags) & INMEMORY)) {

		if ((src->type == TYPE_RET) || (dst->type == TYPE_RET)) {
			/* emit nothing, as the value won't be used anyway */
			return;
		}

		/* If one of the variables resides in memory, we can eliminate
		   the register move from/to the temporary register with the
		   order of getting the destination register and the load. */

		if (IS_INMEMORY(src->flags)) {
#if SIZEOF_VOID_P == 4
			if (IS_2_WORD_TYPE(src->type))
				d = codegen_reg_of_var(iptr->opc, dst, REG_ITMP12_PACKED);
			else
#endif
				d = codegen_reg_of_var(iptr->opc, dst, REG_IFTMP);
			s1 = emit_load(jd, iptr, src, d);
		}
		else {
			s1 = emit_load(jd, iptr, src, REG_IFTMP);
#if SIZEOF_VOID_P == 4
			if (IS_2_WORD_TYPE(src->type))
				d = codegen_reg_of_var(iptr->opc, dst, REG_ITMP12_PACKED);
			else
#endif
				d = codegen_reg_of_var(iptr->opc, dst, s1);
		}

		if (s1 != d) {
			switch (dst->type) {
#if SIZEOF_VOID_P == 8
			case TYPE_INT:
			case TYPE_LNG:
			case TYPE_ADR:
				M_MOV(s1, d);
				break;
#else
			case TYPE_INT:
			case TYPE_ADR:
				M_MOV(s1, d);
				break;
			case TYPE_LNG:
				M_LNGMOVE(s1, d);
				break;
#endif
			case TYPE_FLT:
				M_FMOV(s1, d);
				break;
			case TYPE_DBL:
				M_DMOV(s1, d);
				break;
			default:
				vm_abort("emit_copy: unknown type %d", dst->type);
			}
		}

		emit_store(jd, iptr, dst, d);
	}
}


/* emit_iconst *****************************************************************

   XXX

*******************************************************************************/

void emit_iconst(codegendata *cd, s4 d, s4 value)
{
	s4 disp;

    if ((value >= -32768) && (value <= 32767))
        M_IADD_IMM(REG_ZERO, value, d);
	else if ((value >= 0) && (value <= 0xffff))
        M_OR_IMM(REG_ZERO, value, d);
	else {
        disp = dseg_add_s4(cd, value);
        M_ILD(d, REG_PV, disp);
    }
}


/* emit_lconst *****************************************************************

   XXX

*******************************************************************************/

void emit_lconst(codegendata *cd, s4 d, s8 value)
{
	s4 disp;

#if SIZEOF_VOID_P == 8
	if ((value >= -32768) && (value <= 32767))
		M_LADD_IMM(REG_ZERO, value, d);
	else if ((value >= 0) && (value <= 0xffff))
		M_OR_IMM(REG_ZERO, value, d);
	else {
		disp = dseg_add_s8(cd, value);
		M_LLD(d, REG_PV, disp);
	}
#else
	disp = dseg_add_s8(cd, value);
	M_LLD(d, REG_PV, disp);
#endif
}


/* emit_branch *****************************************************************

   Emits the code for conditional and unconditional branchs.

   NOTE: The reg argument may contain two packed registers.

*******************************************************************************/

void emit_branch(codegendata *cd, s4 disp, s4 condition, s4 reg, u4 opt)
{
	// Calculate the displacements.
	int32_t checkdisp  = (disp - 4);
	int32_t branchdisp = (disp - 4) >> 2;

	/* check which branch to generate */

	if (condition == BRANCH_UNCONDITIONAL) {
		// Check displacement for overflow.
		if (opt_AlwaysEmitLongBranches || ((checkdisp < (int32_t) 0xffff8000) || (checkdisp > (int32_t) 0x00007fff))) {
			/* if the long-branches flag isn't set yet, do it */

			if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
				cd->flags |= (CODEGENDATA_FLAG_ERROR |
							  CODEGENDATA_FLAG_LONGBRANCHES);
			}

			// Calculate the offset relative to PV.
			int32_t currentrpc = cd->mcodeptr - cd->mcodebase;
			int32_t offset     = currentrpc + disp;

			// Sanity check.
			assert(offset % 4 == 0);

			// Do the long-branch.
			M_LUI(REG_ITMP3, offset >> 16);
			M_OR_IMM(REG_ITMP3, offset, REG_ITMP3);
			M_AADD(REG_PV, REG_ITMP3, REG_ITMP3);
			M_JMP(REG_ITMP3);
			M_NOP;
			M_NOP; // This nop is to have 6 instructions (see BRANCH_NOPS).
		}
		else {
			M_BR(branchdisp);
			M_NOP;
		}
	}
	else {
		// Check displacement for overflow.
		if (opt_AlwaysEmitLongBranches || ((checkdisp < (int32_t) 0xffff8000) || (checkdisp > (int32_t) 0x00007fff))) {
			/* if the long-branches flag isn't set yet, do it */

			if (!CODEGENDATA_HAS_FLAG_LONGBRANCHES(cd)) {
				cd->flags |= (CODEGENDATA_FLAG_ERROR |
							  CODEGENDATA_FLAG_LONGBRANCHES);
			}

			// Calculate the offset relative to PV before we generate
			// new code.
			int32_t currentrpc = cd->mcodeptr - cd->mcodebase;
			int32_t offset     = currentrpc + disp;

			// Sanity check.
			assert(offset % 4 == 0);

			switch (condition) {
			case BRANCH_EQ:
				M_BNE(GET_HIGH_REG(reg), GET_LOW_REG(reg), 5);
				break;
			case BRANCH_NE:
				M_BEQ(GET_HIGH_REG(reg), GET_LOW_REG(reg), 5);
				break;
			case BRANCH_LT:
				M_BGEZ(reg, 5);
				break;
			case BRANCH_GE:
				M_BLTZ(reg, 5);
				break;
			case BRANCH_GT:
				M_BLEZ(reg, 5);
				break;
			case BRANCH_LE:
				M_BGTZ(reg, 5);
				break;
			default:
				vm_abort("emit_branch: unknown condition %d", condition);
			}

			// The actual branch code which is over-jumped.  NOTE: We
			// don't use a branch delay slot for the conditional
			// branch.

			// Do the long-branch.
			M_LUI(REG_ITMP3, offset >> 16);
			M_OR_IMM(REG_ITMP3, offset, REG_ITMP3);
			M_AADD(REG_PV, REG_ITMP3, REG_ITMP3);
			M_JMP(REG_ITMP3);
			M_NOP;
		}
		else {
			switch (condition) {
			case BRANCH_EQ:
				M_BEQ(GET_HIGH_REG(reg), GET_LOW_REG(reg), branchdisp);
				break;
			case BRANCH_NE:
				M_BNE(GET_HIGH_REG(reg), GET_LOW_REG(reg), branchdisp);
				break;
			case BRANCH_LT:
				M_BLTZ(reg, branchdisp);
				break;
			case BRANCH_GE:
				M_BGEZ(reg, branchdisp);
				break;
			case BRANCH_GT:
				M_BGTZ(reg, branchdisp);
				break;
			case BRANCH_LE:
				M_BLEZ(reg, branchdisp);
				break;
			default:
				vm_abort("emit_branch: unknown condition %d", condition);
			}

			/* branch delay */
			M_NOP;
		}
	}
}


/* emit_arithmetic_check *******************************************************

   Emit an ArithmeticException check.

*******************************************************************************/

void emit_arithmetic_check(codegendata *cd, instruction *iptr, s4 reg)
{
	if (INSTRUCTION_MUST_CHECK(iptr)) {
		M_BNEZ(reg, 2);
		M_NOP;
		M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_ArithmeticException);
	}
}


/* emit_arrayindexoutofbounds_check ********************************************

   Emit an ArrayIndexOutOfBoundsException check.

*******************************************************************************/

void emit_arrayindexoutofbounds_check(codegendata *cd, instruction *iptr, s4 s1, s4 s2)
{
	if (INSTRUCTION_MUST_CHECK(iptr)) {
		M_ILD_INTERN(REG_ITMP3, s1, OFFSET(java_array_t, size));
		M_CMPULT(s2, REG_ITMP3, REG_ITMP3);
		M_BNEZ(REG_ITMP3, 2);
		M_NOP;
		M_ALD_INTERN(s2, REG_ZERO, TRAP_ArrayIndexOutOfBoundsException);
	}
}


/* emit_arraystore_check *******************************************************

   Emit an ArrayStoreException check.

*******************************************************************************/

void emit_arraystore_check(codegendata *cd, instruction *iptr)
{
	if (INSTRUCTION_MUST_CHECK(iptr)) {
		M_BNEZ(REG_RESULT, 2);
		M_NOP;
		M_ALD_INTERN(REG_RESULT, REG_ZERO, TRAP_ArrayStoreException);
	}
}


/* emit_classcast_check ********************************************************

   Emit a ClassCastException check.

*******************************************************************************/

void emit_classcast_check(codegendata *cd, instruction *iptr, s4 condition, s4 reg, s4 s1)
{
	if (INSTRUCTION_MUST_CHECK(iptr)) {
		switch (condition) {
		case ICMD_IFEQ:
			M_BNEZ(reg, 2);
			break;

		case ICMD_IFNE:
			M_BEQZ(reg, 2);
			break;

		case ICMD_IFLE:
			M_BGTZ(reg, 2);
			break;

		default:
			vm_abort("emit_classcast_check: unknown condition %d", condition);
		}

		M_NOP;
		M_ALD_INTERN(s1, REG_ZERO, TRAP_ClassCastException);
	}
}


/* emit_nullpointer_check ******************************************************

   Emit a NullPointerException check.

*******************************************************************************/

void emit_nullpointer_check(codegendata *cd, instruction *iptr, s4 reg)
{
	if (INSTRUCTION_MUST_CHECK(iptr)) {
		M_BNEZ(reg, 2);
		M_NOP;
		M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_NullPointerException);
	}
}


/* emit_exception_check ********************************************************

   Emit an Exception check.

*******************************************************************************/

void emit_exception_check(codegendata *cd, instruction *iptr)
{
	if (INSTRUCTION_MUST_CHECK(iptr)) {
		M_BNEZ(REG_RESULT, 2);
		M_NOP;
		M_ALD_INTERN(REG_RESULT, REG_ZERO, TRAP_CHECK_EXCEPTION);
	}
}


/* emit_trap_compiler **********************************************************

   Emit a trap instruction which calls the JIT compiler.

*******************************************************************************/

void emit_trap_compiler(codegendata *cd)
{
	M_ALD_INTERN(REG_METHODPTR, REG_ZERO, TRAP_COMPILER);
}


/* emit_trap *******************************************************************

   Emit a trap instruction and return the original machine code.

*******************************************************************************/

uint32_t emit_trap(codegendata *cd)
{
	// Get machine code which is patched back in later. The trap is 1
	// instruction word long.
	uint32_t mcode = *((uint32_t*) cd->mcodeptr);

	M_RESERVED;

	return mcode;
}


/**
 * Emit code to recompute the procedure vector.
 */
void emit_recompute_pv(codegendata *cd)
{
	int32_t disp = (int32_t) (cd->mcodeptr - cd->mcodebase);

	M_LDA(REG_PV, REG_RA, -disp);
}


/**
 * Generates synchronization code to enter a monitor.
 */
#if defined(ENABLE_THREADS)
void emit_monitor_enter(jitdata* jd, int32_t syncslot_offset)
{
	int32_t p;
	int32_t disp;

	// Get required compiler data.
	methodinfo*  m  = jd->m;
	codegendata* cd = jd->cd;

# if !defined(NDEBUG)
		if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
			M_LDA(REG_SP, REG_SP, -(INT_ARG_CNT + FLT_ARG_CNT) * 8);

			for (p = 0; p < INT_ARG_CNT; p++)
				M_AST(abi_registers_integer_argument[p], REG_SP, p * 8);

			for (p = 0; p < FLT_ARG_CNT; p++)
				M_DST(abi_registers_float_argument[p], REG_SP, (INT_ARG_CNT + p) * 8);

			syncslot_offset += (INT_ARG_CNT + FLT_ARG_CNT) * 8;
		}
# endif

		/* get correct lock object */

		if (m->flags & ACC_STATIC) {
			disp = dseg_add_address(cd, &m->clazz->object.header);
			M_ALD(REG_A0, REG_PV, disp);
			disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
			M_ALD(REG_ITMP3, REG_PV, disp);
		}
		else {
/* 			emit_nullpointer_check(cd, iptr, REG_A0); */
			M_BNEZ(REG_A0, 2);
			disp = dseg_add_functionptr(cd, LOCK_monitor_enter);
			M_ALD(REG_ITMP3, REG_PV, disp);                   /* branch delay */
			M_ALD_INTERN(REG_ZERO, REG_ZERO, TRAP_NullPointerException);
		}

		M_JSR(REG_RA, REG_ITMP3);
		M_AST(REG_A0, REG_SP, syncslot_offset);               /* branch delay */

# if !defined(NDEBUG)
		if (JITDATA_HAS_FLAG_VERBOSECALL(jd)) {
			for (p = 0; p < INT_ARG_CNT; p++)
				M_ALD(abi_registers_integer_argument[p], REG_SP, p * 8);

			for (p = 0; p < FLT_ARG_CNT; p++)
				M_DLD(abi_registers_float_argument[p], REG_SP, (INT_ARG_CNT + p) * 8);


			M_LDA(REG_SP, REG_SP, (INT_ARG_CNT + FLT_ARG_CNT) * 8);
		}
# endif
}
#endif


/**
 * Generates synchronization code to leave a monitor.
 */
#if defined(ENABLE_THREADS)
void emit_monitor_exit(jitdata* jd, int32_t syncslot_offset)
{
	int32_t disp;

	// Get required compiler data.
	methodinfo*  m  = jd->m;
	codegendata* cd = jd->cd;

	disp = dseg_add_functionptr(cd, LOCK_monitor_exit);
	M_ALD(REG_ITMP3, REG_PV, disp);

	/* we need to save the proper return value */

	methoddesc* md = m->parseddesc;

	switch (md->returntype.type) {
	case TYPE_INT:
	case TYPE_ADR:
#if SIZEOF_VOID_P == 8
	case TYPE_LNG:
#endif
		M_ALD(REG_A0, REG_SP, syncslot_offset);
		M_JSR(REG_RA, REG_ITMP3);
		M_AST(REG_RESULT, REG_SP, syncslot_offset);  /* delay slot */
		break;
#if SIZEOF_VOID_P == 4
	case TYPE_LNG:
		M_ALD(REG_A0, REG_SP, syncslot_offset);
		M_LST(REG_RESULT_PACKED, REG_SP, syncslot_offset);
		M_JSR(REG_RA, REG_ITMP3);
		M_NOP;
		break;
#endif
	case TYPE_FLT:
	case TYPE_DBL:
		M_ALD(REG_A0, REG_SP, syncslot_offset);
		M_JSR(REG_RA, REG_ITMP3);
		M_DST(REG_FRESULT, REG_SP, syncslot_offset); /* delay slot */
		break;
	default:
		M_JSR(REG_RA, REG_ITMP3);
		M_ALD(REG_A0, REG_SP, syncslot_offset); /* delay*/
		break;
	}

	/* and now restore the proper return value */

	switch (md->returntype.type) {
	case TYPE_INT:
	case TYPE_ADR:
#if SIZEOF_VOID_P == 8
	case TYPE_LNG:
#endif
		M_ALD(REG_RESULT, REG_SP, syncslot_offset);
		break;
#if SIZEOF_VOID_P == 4
	case TYPE_LNG:
		M_LLD(REG_RESULT_PACKED, REG_SP, syncslot_offset);
		break;
#endif
	case TYPE_FLT:
	case TYPE_DBL:
		M_DLD(REG_FRESULT, REG_SP, syncslot_offset);
		break;
	}
}
#endif


/* emit_verbosecall_enter ******************************************************

   Generates the code for the call trace.

*******************************************************************************/

#if !defined(NDEBUG)
void emit_verbosecall_enter(jitdata *jd)
{
	methodinfo   *m;
	codeinfo     *code;
	codegendata  *cd;
	registerdata *rd;
	methoddesc   *md;
	s4            disp;
	s4            i, s;

	/* get required compiler data */

	m    = jd->m;
	code = jd->code;
	cd   = jd->cd;
	rd   = jd->rd;

	md = m->parseddesc;

	/* mark trace code */

	M_NOP;

	/* keep stack 16-byte aligned */

	M_LDA(REG_SP, REG_SP, -(PA_SIZE + (md->paramcount + 2 + TMP_CNT) * 8));
	M_AST(REG_RA, REG_SP, PA_SIZE + md->paramcount * 8);

	/* save argument registers (we store the registers as address
	   types, so it's correct for MIPS32 too) */

	for (i = 0; i < md->paramcount; i++) {
		if (!md->params[i].inmemory) {
			s = md->params[i].regoff;
			switch (md->paramtypes[i].type) {
			case TYPE_ADR:
			case TYPE_INT:
				M_AST(s, REG_SP, PA_SIZE + i * 8);
				break;
			case TYPE_LNG:
				M_LST(s, REG_SP, PA_SIZE + i * 8);
				break;
			case TYPE_FLT:
				M_FST(s, REG_SP, PA_SIZE + i * 8);
				break;
			case TYPE_DBL:
				M_DST(s, REG_SP, PA_SIZE + i * 8);
				break;
			}
		}
	}

	/* save temporary registers for leaf methods */

	if (code_is_leafmethod(code)) {
		for (i = 0; i < INT_TMP_CNT; i++)
			M_AST(rd->tmpintregs[i], REG_SP, PA_SIZE + (md->paramcount + 2 + i) * 8);

		for (i = 0; i < FLT_TMP_CNT; i++)
			M_DST(rd->tmpfltregs[i], REG_SP, PA_SIZE + (md->paramcount + 2 + INT_TMP_CNT + i) * 8);
	}

	disp = dseg_add_address(cd, m);
	M_ALD(REG_A0, REG_PV, disp);
	M_LDA(REG_A1, REG_SP, PA_SIZE);
	M_LDA(REG_A2, REG_SP, PA_SIZE + (md->paramcount + 2 + TMP_CNT) * 8 + cd->stackframesize * 8);
	disp = dseg_add_functionptr(cd, trace_java_call_enter);
	M_ALD(REG_ITMP3, REG_PV, disp);
	M_JSR(REG_RA, REG_ITMP3);
	M_NOP;

	/* restore argument registers */

	for (i = 0; i < md->paramcount; i++) {
		if (!md->params[i].inmemory) {
			s = md->params[i].regoff;
			switch (md->paramtypes[i].type) {
			case TYPE_ADR:
			case TYPE_INT:
				M_ALD(s, REG_SP, PA_SIZE + i * 8);
				break;
			case TYPE_LNG:
				M_LLD(s, REG_SP, PA_SIZE + i * 8);
				break;
			case TYPE_FLT:
				M_FLD(s, REG_SP, PA_SIZE + i * 8);
				break;
			case TYPE_DBL:
				M_DLD(s, REG_SP, PA_SIZE + i * 8);
				break;
			}
		}
	}

	/* restore temporary registers for leaf methods */

	if (code_is_leafmethod(code)) {
		for (i = 0; i < INT_TMP_CNT; i++)
			M_ALD(rd->tmpintregs[i], REG_SP, PA_SIZE + (md->paramcount + 2 + i) * 8);

		for (i = 0; i < FLT_TMP_CNT; i++)
			M_DLD(rd->tmpfltregs[i], REG_SP, PA_SIZE + (md->paramcount + 2 + INT_TMP_CNT + i) * 8);
	}

	/* keep stack 16-byte aligned */

	M_ALD(REG_RA, REG_SP, PA_SIZE + md->paramcount * 8);
	M_LDA(REG_SP, REG_SP, PA_SIZE + (md->paramcount + 2 + TMP_CNT) * 8);

	/* mark trace code */

	M_NOP;
}
#endif /* !defined(NDEBUG) */


/* emit_verbosecall_exit *******************************************************

   Generates the code for the call trace.

*******************************************************************************/

#if !defined(NDEBUG)
void emit_verbosecall_exit(jitdata *jd)
{
	methodinfo   *m;
	codegendata  *cd;
	registerdata *rd;
	methoddesc   *md;
	s4            disp;

	/* get required compiler data */

	m  = jd->m;
	cd = jd->cd;
	rd = jd->rd;

	md = m->parseddesc;

	/* mark trace code */

	M_NOP;

	/* keep stack 16-byte aligned */

#if SIZEOF_VOID_P == 8
	assert(0); // XXX: Revisit this code for MIPS64!
#endif
	M_ASUB_IMM(REG_SP, PA_SIZE + 2 * 8, REG_SP);
	M_AST(REG_RA, REG_SP, PA_SIZE + 1 * 8);

	/* save return value */

	switch (md->returntype.type) {
	case TYPE_ADR:
	case TYPE_INT:
		M_AST(REG_RESULT, REG_SP, PA_SIZE + 0 * 8);
		break;
	case TYPE_LNG:
#if SIZEOF_VOID_P == 8
		M_LST(REG_RESULT, REG_SP, PA_SIZE + 0 * 8);
#else
		M_LST(REG_RESULT_PACKED, REG_SP, PA_SIZE + 0 * 8);
#endif
		break;
	case TYPE_FLT:
		M_FST(REG_FRESULT, REG_SP, PA_SIZE + 0 * 8);
		break;
	case TYPE_DBL:
		M_DST(REG_FRESULT, REG_SP, PA_SIZE + 0 * 8);
	}

	disp = dseg_add_address(cd, m);
	M_ALD(REG_A0, REG_PV, disp);
	M_AADD_IMM(REG_SP, PA_SIZE, REG_A1);
	disp = dseg_add_functionptr(cd, trace_java_call_exit);
	M_ALD(REG_ITMP3, REG_PV, disp);
	M_JSR(REG_RA, REG_ITMP3);
	M_NOP;

	/* restore return value */

	switch (md->returntype.type) {
	case TYPE_ADR:
	case TYPE_INT:
		M_ALD(REG_RESULT, REG_SP, PA_SIZE + 0 * 8);
		break;
	case TYPE_LNG:
#if SIZEOF_VOID_P == 8
		M_LLD(REG_RESULT, REG_SP, PA_SIZE + 0 * 8);
#else
		M_LLD(REG_RESULT_PACKED, REG_SP, PA_SIZE + 0 * 8);
#endif
		break;
	case TYPE_FLT:
		M_FLD(REG_FRESULT, REG_SP, PA_SIZE + 0 * 8);
		break;
	case TYPE_DBL:
		M_DLD(REG_FRESULT, REG_SP, PA_SIZE + 0 * 8);
	}

	/* keep stack 16-byte aligned */

	M_ALD(REG_RA, REG_SP, PA_SIZE + 1 * 8);
	M_AADD_IMM(REG_SP, PA_SIZE + 2 * 8, REG_SP);

	/* mark trace code */

	M_NOP;
}
#endif /* !defined(NDEBUG) */


/*
 * These are local overrides for various environment variables in Emacs.
 * Please do not remove this and leave it at the end of the file, where
 * Emacs will automagically detect them.
 * ---------------------------------------------------------------------
 * Local variables:
 * mode: c
 * indent-tabs-mode: t
 * c-basic-offset: 4
 * tab-width: 4
 * End:
 * vim:noexpandtab:sw=4:ts=4:
 */
