xref: /dalvik/vm/mterp/out/InterpC-x86-atom.c

/*
 * This file was generated automatically by gen-mterp.py for 'x86-atom'.
 *
 * --> DO NOT EDIT <--
 */

/* File: c/header.c */
/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* common includes */
#include "Dalvik.h"
#include "interp/InterpDefs.h"
#include "mterp/Mterp.h"
#include <math.h>                   // needed for fmod, fmodf
#include "mterp/common/FindInterface.h"

/*
 * Configuration defines.  These affect the C implementations, i.e. the
 * portable interpreter(s) and C stubs.
 *
 * Some defines are controlled by the Makefile, e.g.:
 *   WITH_PROFILER
 *   WITH_DEBUGGER
 *   WITH_INSTR_CHECKS
 *   WITH_TRACKREF_CHECKS
 *   EASY_GDB
 *   NDEBUG
 *
 * If THREADED_INTERP is not defined, we use a classic "while true / switch"
 * interpreter.  If it is defined, then the tail end of each instruction
 * handler fetches the next instruction and jumps directly to the handler.
 * This increases the size of the "Std" interpreter by about 10%, but
 * provides a speedup of about the same magnitude.
 *
 * There's a "hybrid" approach that uses a goto table instead of a switch
 * statement, avoiding the "is the opcode in range" tests required for switch.
 * The performance is close to the threaded version, and without the 10%
 * size increase, but the benchmark results are off enough that it's not
 * worth adding as a third option.
 */
#define THREADED_INTERP             /* threaded vs. while-loop interpreter */

#ifdef WITH_INSTR_CHECKS            /* instruction-level paranoia (slow!) */
# define CHECK_BRANCH_OFFSETS
# define CHECK_REGISTER_INDICES
#endif

/*
 * ARM EABI requires 64-bit alignment for access to 64-bit data types.  We
 * can't just use pointers to copy 64-bit values out of our interpreted
 * register set, because gcc will generate ldrd/strd.
 *
 * The __UNION version copies data in and out of a union.  The __MEMCPY
 * version uses a memcpy() call to do the transfer; gcc is smart enough to
 * not actually call memcpy().  The __UNION version is very bad on ARM;
 * it only uses one more instruction than __MEMCPY, but for some reason
 * gcc thinks it needs separate storage for every instance of the union.
 * On top of that, it feels the need to zero them out at the start of the
 * method.  Net result is we zero out ~700 bytes of stack space at the top
 * of the interpreter using ARM STM instructions.
 */
#if defined(__ARM_EABI__)
//# define NO_UNALIGN_64__UNION
# define NO_UNALIGN_64__MEMCPY
#endif

//#define LOG_INSTR                   /* verbose debugging */
/* set and adjust ANDROID_LOG_TAGS='*:i jdwp:i dalvikvm:i dalvikvmi:i' */

/*
 * Keep a tally of accesses to fields.  Currently only works if full DEX
 * optimization is disabled.
 */
#ifdef PROFILE_FIELD_ACCESS
# define UPDATE_FIELD_GET(_field) { (_field)->gets++; }
# define UPDATE_FIELD_PUT(_field) { (_field)->puts++; }
#else
# define UPDATE_FIELD_GET(_field) ((void)0)
# define UPDATE_FIELD_PUT(_field) ((void)0)
#endif

/*
 * Export another copy of the PC on every instruction; this is largely
 * redundant with EXPORT_PC and the debugger code.  This value can be
 * compared against what we have stored on the stack with EXPORT_PC to
 * help ensure that we aren't missing any export calls.
 */
#if WITH_EXTRA_GC_CHECKS > 1
# define EXPORT_EXTRA_PC() (self->currentPc2 = pc)
#else
# define EXPORT_EXTRA_PC()
#endif

/*
 * Adjust the program counter.  "_offset" is a signed int, in 16-bit units.
 *
 * Assumes the existence of "const u2* pc" and "const u2* curMethod->insns".
 *
 * We don't advance the program counter until we finish an instruction or
 * branch, because we do want to have to unroll the PC if there's an
 * exception.
 */
#ifdef CHECK_BRANCH_OFFSETS
# define ADJUST_PC(_offset) do {                                            \
        int myoff = _offset;        /* deref only once */                   \
        if (pc + myoff < curMethod->insns ||                                \
            pc + myoff >= curMethod->insns + dvmGetMethodInsnsSize(curMethod)) \
        {                                                                   \
            char* desc;                                                     \
            desc = dexProtoCopyMethodDescriptor(&curMethod->prototype);     \
            LOGE("Invalid branch %d at 0x%04x in %s.%s %s\n",               \
                myoff, (int) (pc - curMethod->insns),                       \
                curMethod->clazz->descriptor, curMethod->name, desc);       \
            free(desc);                                                     \
            dvmAbort();                                                     \
        }                                                                   \
        pc += myoff;                                                        \
        EXPORT_EXTRA_PC();                                                  \
    } while (false)
#else
# define ADJUST_PC(_offset) do {                                            \
        pc += _offset;                                                      \
        EXPORT_EXTRA_PC();                                                  \
    } while (false)
#endif

/*
 * If enabled, log instructions as we execute them.
 */
#ifdef LOG_INSTR
# define ILOGD(...) ILOG(LOG_DEBUG, __VA_ARGS__)
# define ILOGV(...) ILOG(LOG_VERBOSE, __VA_ARGS__)
# define ILOG(_level, ...) do {                                             \
        char debugStrBuf[128];                                              \
        snprintf(debugStrBuf, sizeof(debugStrBuf), __VA_ARGS__);            \
        if (curMethod != NULL)                                                 \
            LOG(_level, LOG_TAG"i", "%-2d|%04x%s\n",                        \
                self->threadId, (int)(pc - curMethod->insns), debugStrBuf); \
        else                                                                \
            LOG(_level, LOG_TAG"i", "%-2d|####%s\n",                        \
                self->threadId, debugStrBuf);                               \
    } while(false)
void dvmDumpRegs(const Method* method, const u4* framePtr, bool inOnly);
# define DUMP_REGS(_meth, _frame, _inOnly) dvmDumpRegs(_meth, _frame, _inOnly)
static const char kSpacing[] = "            ";
#else
# define ILOGD(...) ((void)0)
# define ILOGV(...) ((void)0)
# define DUMP_REGS(_meth, _frame, _inOnly) ((void)0)
#endif

/* get a long from an array of u4 */
static inline s8 getLongFromArray(const u4* ptr, int idx)
{
#if defined(NO_UNALIGN_64__UNION)
    union { s8 ll; u4 parts[2]; } conv;

    ptr += idx;
    conv.parts[0] = ptr[0];
    conv.parts[1] = ptr[1];
    return conv.ll;
#elif defined(NO_UNALIGN_64__MEMCPY)
    s8 val;
    memcpy(&val, &ptr[idx], 8);
    return val;
#else
    return *((s8*) &ptr[idx]);
#endif
}

/* store a long into an array of u4 */
static inline void putLongToArray(u4* ptr, int idx, s8 val)
{
#if defined(NO_UNALIGN_64__UNION)
    union { s8 ll; u4 parts[2]; } conv;

    ptr += idx;
    conv.ll = val;
    ptr[0] = conv.parts[0];
    ptr[1] = conv.parts[1];
#elif defined(NO_UNALIGN_64__MEMCPY)
    memcpy(&ptr[idx], &val, 8);
#else
    *((s8*) &ptr[idx]) = val;
#endif
}

/* get a double from an array of u4 */
static inline double getDoubleFromArray(const u4* ptr, int idx)
{
#if defined(NO_UNALIGN_64__UNION)
    union { double d; u4 parts[2]; } conv;

    ptr += idx;
    conv.parts[0] = ptr[0];
    conv.parts[1] = ptr[1];
    return conv.d;
#elif defined(NO_UNALIGN_64__MEMCPY)
    double dval;
    memcpy(&dval, &ptr[idx], 8);
    return dval;
#else
    return *((double*) &ptr[idx]);
#endif
}

/* store a double into an array of u4 */
static inline void putDoubleToArray(u4* ptr, int idx, double dval)
{
#if defined(NO_UNALIGN_64__UNION)
    union { double d; u4 parts[2]; } conv;

    ptr += idx;
    conv.d = dval;
    ptr[0] = conv.parts[0];
    ptr[1] = conv.parts[1];
#elif defined(NO_UNALIGN_64__MEMCPY)
    memcpy(&ptr[idx], &dval, 8);
#else
    *((double*) &ptr[idx]) = dval;
#endif
}

/*
 * If enabled, validate the register number on every access.  Otherwise,
 * just do an array access.
 *
 * Assumes the existence of "u4* fp".
 *
 * "_idx" may be referenced more than once.
 */
#ifdef CHECK_REGISTER_INDICES
# define GET_REGISTER(_idx) \
    ( (_idx) < curMethod->registersSize ? \
        (fp[(_idx)]) : (assert(!"bad reg"),1969) )
# define SET_REGISTER(_idx, _val) \
    ( (_idx) < curMethod->registersSize ? \
        (fp[(_idx)] = (u4)(_val)) : (assert(!"bad reg"),1969) )
# define GET_REGISTER_AS_OBJECT(_idx)       ((Object *)GET_REGISTER(_idx))
# define SET_REGISTER_AS_OBJECT(_idx, _val) SET_REGISTER(_idx, (s4)_val)
# define GET_REGISTER_INT(_idx) ((s4) GET_REGISTER(_idx))
# define SET_REGISTER_INT(_idx, _val) SET_REGISTER(_idx, (s4)_val)
# define GET_REGISTER_WIDE(_idx) \
    ( (_idx) < curMethod->registersSize-1 ? \
        getLongFromArray(fp, (_idx)) : (assert(!"bad reg"),1969) )
# define SET_REGISTER_WIDE(_idx, _val) \
    ( (_idx) < curMethod->registersSize-1 ? \
        putLongToArray(fp, (_idx), (_val)) : (assert(!"bad reg"),1969) )
# define GET_REGISTER_FLOAT(_idx) \
    ( (_idx) < curMethod->registersSize ? \
        (*((float*) &fp[(_idx)])) : (assert(!"bad reg"),1969.0f) )
# define SET_REGISTER_FLOAT(_idx, _val) \
    ( (_idx) < curMethod->registersSize ? \
        (*((float*) &fp[(_idx)]) = (_val)) : (assert(!"bad reg"),1969.0f) )
# define GET_REGISTER_DOUBLE(_idx) \
    ( (_idx) < curMethod->registersSize-1 ? \
        getDoubleFromArray(fp, (_idx)) : (assert(!"bad reg"),1969.0) )
# define SET_REGISTER_DOUBLE(_idx, _val) \
    ( (_idx) < curMethod->registersSize-1 ? \
        putDoubleToArray(fp, (_idx), (_val)) : (assert(!"bad reg"),1969.0) )
#else
# define GET_REGISTER(_idx)                 (fp[(_idx)])
# define SET_REGISTER(_idx, _val)           (fp[(_idx)] = (_val))
# define GET_REGISTER_AS_OBJECT(_idx)       ((Object*) fp[(_idx)])
# define SET_REGISTER_AS_OBJECT(_idx, _val) (fp[(_idx)] = (u4)(_val))
# define GET_REGISTER_INT(_idx)             ((s4)GET_REGISTER(_idx))
# define SET_REGISTER_INT(_idx, _val)       SET_REGISTER(_idx, (s4)_val)
# define GET_REGISTER_WIDE(_idx)            getLongFromArray(fp, (_idx))
# define SET_REGISTER_WIDE(_idx, _val)      putLongToArray(fp, (_idx), (_val))
# define GET_REGISTER_FLOAT(_idx)           (*((float*) &fp[(_idx)]))
# define SET_REGISTER_FLOAT(_idx, _val)     (*((float*) &fp[(_idx)]) = (_val))
# define GET_REGISTER_DOUBLE(_idx)          getDoubleFromArray(fp, (_idx))
# define SET_REGISTER_DOUBLE(_idx, _val)    putDoubleToArray(fp, (_idx), (_val))
#endif

/*
 * Get 16 bits from the specified offset of the program counter.  We always
 * want to load 16 bits at a time from the instruction stream -- it's more
 * efficient than 8 and won't have the alignment problems that 32 might.
 *
 * Assumes existence of "const u2* pc".
 */
#define FETCH(_offset)     (pc[(_offset)])

/*
 * Extract instruction byte from 16-bit fetch (_inst is a u2).
 */
#define INST_INST(_inst)    ((_inst) & 0xff)

/*
 * Replace the opcode (used when handling breakpoints).  _opcode is a u1.
 */
#define INST_REPLACE_OP(_inst, _opcode) (((_inst) & 0xff00) | _opcode)

/*
 * Extract the "vA, vB" 4-bit registers from the instruction word (_inst is u2).
 */
#define INST_A(_inst)       (((_inst) >> 8) & 0x0f)
#define INST_B(_inst)       ((_inst) >> 12)

/*
 * Get the 8-bit "vAA" 8-bit register index from the instruction word.
 * (_inst is u2)
 */
#define INST_AA(_inst)      ((_inst) >> 8)

/*
 * The current PC must be available to Throwable constructors, e.g.
 * those created by dvmThrowException(), so that the exception stack
 * trace can be generated correctly.  If we don't do this, the offset
 * within the current method won't be shown correctly.  See the notes
 * in Exception.c.
 *
 * This is also used to determine the address for precise GC.
 *
 * Assumes existence of "u4* fp" and "const u2* pc".
 */
#define EXPORT_PC()         (SAVEAREA_FROM_FP(fp)->xtra.currentPc = pc)

/*
 * Determine if we need to switch to a different interpreter.  "_current"
 * is either INTERP_STD or INTERP_DBG.  It should be fixed for a given
 * interpreter generation file, which should remove the outer conditional
 * from the following.
 *
 * If we're building without debug and profiling support, we never switch.
 */
#if defined(WITH_PROFILER) || defined(WITH_DEBUGGER)
#if defined(WITH_JIT)
# define NEED_INTERP_SWITCH(_current) (                                     \
    (_current == INTERP_STD) ?                                              \
        dvmJitDebuggerOrProfilerActive() : !dvmJitDebuggerOrProfilerActive() )
#else
# define NEED_INTERP_SWITCH(_current) (                                     \
    (_current == INTERP_STD) ?                                              \
        dvmDebuggerOrProfilerActive() : !dvmDebuggerOrProfilerActive() )
#endif
#else
# define NEED_INTERP_SWITCH(_current) (false)
#endif

/*
 * Check to see if "obj" is NULL.  If so, throw an exception.  Assumes the
 * pc has already been exported to the stack.
 *
 * Perform additional checks on debug builds.
 *
 * Use this to check for NULL when the instruction handler calls into
 * something that could throw an exception (so we have already called
 * EXPORT_PC at the top).
 */
static inline bool checkForNull(Object* obj)
{
    if (obj == NULL) {
        dvmThrowException("Ljava/lang/NullPointerException;", NULL);
        return false;
    }
#ifdef WITH_EXTRA_OBJECT_VALIDATION
    if (!dvmIsValidObject(obj)) {
        LOGE("Invalid object %p\n", obj);
        dvmAbort();
    }
#endif
#ifndef NDEBUG
    if (obj->clazz == NULL || ((u4) obj->clazz) <= 65536) {
        /* probable heap corruption */
        LOGE("Invalid object class %p (in %p)\n", obj->clazz, obj);
        dvmAbort();
    }
#endif
    return true;
}

/*
 * Check to see if "obj" is NULL.  If so, export the PC into the stack
 * frame and throw an exception.
 *
 * Perform additional checks on debug builds.
 *
 * Use this to check for NULL when the instruction handler doesn't do
 * anything else that can throw an exception.
 */
static inline bool checkForNullExportPC(Object* obj, u4* fp, const u2* pc)
{
    if (obj == NULL) {
        EXPORT_PC();
        dvmThrowException("Ljava/lang/NullPointerException;", NULL);
        return false;
    }
#ifdef WITH_EXTRA_OBJECT_VALIDATION
    if (!dvmIsValidObject(obj)) {
        LOGE("Invalid object %p\n", obj);
        dvmAbort();
    }
#endif
#ifndef NDEBUG
    if (obj->clazz == NULL || ((u4) obj->clazz) <= 65536) {
        /* probable heap corruption */
        LOGE("Invalid object class %p (in %p)\n", obj->clazz, obj);
        dvmAbort();
    }
#endif
    return true;
}

/* File: cstubs/stubdefs.c */
/* this is a standard (no debug support) interpreter */
#define INTERP_TYPE INTERP_STD
#define CHECK_DEBUG_AND_PROF() ((void)0)
# define CHECK_TRACKED_REFS() ((void)0)
#if defined(WITH_JIT)
#define CHECK_JIT() (0)
#define ABORT_JIT_TSELECT() ((void)0)
#endif

/*
 * In the C mterp stubs, "goto" is a function call followed immediately
 * by a return.
 */

#define GOTO_TARGET_DECL(_target, ...)                                      \
    void dvmMterp_##_target(MterpGlue* glue, ## __VA_ARGS__);

#define GOTO_TARGET(_target, ...)                                           \
    void dvmMterp_##_target(MterpGlue* glue, ## __VA_ARGS__) {              \
        u2 ref, vsrc1, vsrc2, vdst;                                         \
        u2 inst = FETCH(0);                                                 \
        const Method* methodToCall;                                         \
        StackSaveArea* debugSaveArea;

#define GOTO_TARGET_END }

/*
 * Redefine what used to be local variable accesses into MterpGlue struct
 * references.  (These are undefined down in "footer.c".)
 */
#define retval                  glue->retval
#define pc                      glue->pc
#define fp                      glue->fp
#define curMethod               glue->method
#define methodClassDex          glue->methodClassDex
#define self                    glue->self
#define debugTrackedRefStart    glue->debugTrackedRefStart

/* ugh */
#define STUB_HACK(x) x


/*
 * Opcode handler framing macros.  Here, each opcode is a separate function
 * that takes a "glue" argument and returns void.  We can't declare
 * these "static" because they may be called from an assembly stub.
 */
#define HANDLE_OPCODE(_op)                                                  \
    void dvmMterp_##_op(MterpGlue* glue) {                                  \
        u2 ref, vsrc1, vsrc2, vdst;                                         \
        u2 inst = FETCH(0);

#define OP_END }

/*
 * Like the "portable" FINISH, but don't reload "inst", and return to caller
 * when done.
 */
#define FINISH(_offset) {                                                   \
        ADJUST_PC(_offset);                                                 \
        CHECK_DEBUG_AND_PROF();                                             \
        CHECK_TRACKED_REFS();                                               \
        return;                                                             \
    }


/*
 * The "goto label" statements turn into function calls followed by
 * return statements.  Some of the functions take arguments, which in the
 * portable interpreter are handled by assigning values to globals.
 */

#define GOTO_exceptionThrown()                                              \
    do {                                                                    \
        dvmMterp_exceptionThrown(glue);                                     \
        return;                                                             \
    } while(false)

#define GOTO_returnFromMethod()                                             \
    do {                                                                    \
        dvmMterp_returnFromMethod(glue);                                    \
        return;                                                             \
    } while(false)

#define GOTO_invoke(_target, _methodCallRange)                              \
    do {                                                                    \
        dvmMterp_##_target(glue, _methodCallRange);                         \
        return;                                                             \
    } while(false)

#define GOTO_invokeMethod(_methodCallRange, _methodToCall, _vsrc1, _vdst)   \
    do {                                                                    \
        dvmMterp_invokeMethod(glue, _methodCallRange, _methodToCall,        \
            _vsrc1, _vdst);                                                 \
        return;                                                             \
    } while(false)

/*
 * As a special case, "goto bail" turns into a longjmp.  Use "bail_switch"
 * if we need to switch to the other interpreter upon our return.
 */
#define GOTO_bail()                                                         \
    dvmMterpStdBail(glue, false);
#define GOTO_bail_switch()                                                  \
    dvmMterpStdBail(glue, true);

/*
 * Periodically check for thread suspension.
 *
 * While we're at it, see if a debugger has attached or the profiler has
 * started.  If so, switch to a different "goto" table.
 */
#define PERIODIC_CHECKS(_entryPoint, _pcadj) {                              \
        if (dvmCheckSuspendQuick(self)) {                                   \
            EXPORT_PC();  /* need for precise GC */                         \
            dvmCheckSuspendPending(self);                                   \
        }                                                                   \
        if (NEED_INTERP_SWITCH(INTERP_TYPE)) {                              \
            ADJUST_PC(_pcadj);                                              \
            glue->entryPoint = _entryPoint;                                 \
            LOGVV("threadid=%d: switch to STD ep=%d adj=%d\n",              \
                self->threadId, (_entryPoint), (_pcadj));                   \
            GOTO_bail_switch();                                             \
        }                                                                   \
    }

/* File: c/opcommon.c */
/* forward declarations of goto targets */
GOTO_TARGET_DECL(filledNewArray, bool methodCallRange);
GOTO_TARGET_DECL(invokeVirtual, bool methodCallRange);
GOTO_TARGET_DECL(invokeSuper, bool methodCallRange);
GOTO_TARGET_DECL(invokeInterface, bool methodCallRange);
GOTO_TARGET_DECL(invokeDirect, bool methodCallRange);
GOTO_TARGET_DECL(invokeStatic, bool methodCallRange);
GOTO_TARGET_DECL(invokeVirtualQuick, bool methodCallRange);
GOTO_TARGET_DECL(invokeSuperQuick, bool methodCallRange);
GOTO_TARGET_DECL(invokeMethod, bool methodCallRange, const Method* methodToCall,
    u2 count, u2 regs);
GOTO_TARGET_DECL(returnFromMethod);
GOTO_TARGET_DECL(exceptionThrown);

/*
 * ===========================================================================
 *
 * What follows are opcode definitions shared between multiple opcodes with
 * minor substitutions handled by the C pre-processor.  These should probably
 * use the mterp substitution mechanism instead, with the code here moved
 * into common fragment files (like the asm "binop.S"), although it's hard
 * to give up the C preprocessor in favor of the much simpler text subst.
 *
 * ===========================================================================
 */

#define HANDLE_NUMCONV(_opcode, _opname, _fromtype, _totype)                \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s v%d,v%d", (_opname), vdst, vsrc1);                       \
        SET_REGISTER##_totype(vdst,                                         \
            GET_REGISTER##_fromtype(vsrc1));                                \
        FINISH(1);

#define HANDLE_FLOAT_TO_INT(_opcode, _opname, _fromvtype, _fromrtype,       \
        _tovtype, _tortype)                                                 \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
    {                                                                       \
        /* spec defines specific handling for +/- inf and NaN values */     \
        _fromvtype val;                                                     \
        _tovtype intMin, intMax, result;                                    \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s v%d,v%d", (_opname), vdst, vsrc1);                       \
        val = GET_REGISTER##_fromrtype(vsrc1);                              \
        intMin = (_tovtype) 1 << (sizeof(_tovtype) * 8 -1);                 \
        intMax = ~intMin;                                                   \
        result = (_tovtype) val;                                            \
        if (val >= intMax)          /* +inf */                              \
            result = intMax;                                                \
        else if (val <= intMin)     /* -inf */                              \
            result = intMin;                                                \
        else if (val != val)        /* NaN */                               \
            result = 0;                                                     \
        else                                                                \
            result = (_tovtype) val;                                        \
        SET_REGISTER##_tortype(vdst, result);                               \
    }                                                                       \
    FINISH(1);

#define HANDLE_INT_TO_SMALL(_opcode, _opname, _type)                        \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|int-to-%s v%d,v%d", (_opname), vdst, vsrc1);                \
        SET_REGISTER(vdst, (_type) GET_REGISTER(vsrc1));                    \
        FINISH(1);

/* NOTE: the comparison result is always a signed 4-byte integer */
#define HANDLE_OP_CMPX(_opcode, _opname, _varType, _type, _nanVal)          \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        int result;                                                         \
        u2 regs;                                                            \
        _varType val1, val2;                                                \
        vdst = INST_AA(inst);                                               \
        regs = FETCH(1);                                                    \
        vsrc1 = regs & 0xff;                                                \
        vsrc2 = regs >> 8;                                                  \
        ILOGV("|cmp%s v%d,v%d,v%d", (_opname), vdst, vsrc1, vsrc2);         \
        val1 = GET_REGISTER##_type(vsrc1);                                  \
        val2 = GET_REGISTER##_type(vsrc2);                                  \
        if (val1 == val2)                                                   \
            result = 0;                                                     \
        else if (val1 < val2)                                               \
            result = -1;                                                    \
        else if (val1 > val2)                                               \
            result = 1;                                                     \
        else                                                                \
            result = (_nanVal);                                             \
        ILOGV("+ result=%d\n", result);                                     \
        SET_REGISTER(vdst, result);                                         \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_IF_XX(_opcode, _opname, _cmp)                             \
    HANDLE_OPCODE(_opcode /*vA, vB, +CCCC*/)                                \
        vsrc1 = INST_A(inst);                                               \
        vsrc2 = INST_B(inst);                                               \
        if ((s4) GET_REGISTER(vsrc1) _cmp (s4) GET_REGISTER(vsrc2)) {       \
            int branchOffset = (s2)FETCH(1);    /* sign-extended */         \
            ILOGV("|if-%s v%d,v%d,+0x%04x", (_opname), vsrc1, vsrc2,        \
                branchOffset);                                              \
            ILOGV("> branch taken");                                        \
            if (branchOffset < 0)                                           \
                PERIODIC_CHECKS(kInterpEntryInstr, branchOffset);           \
            FINISH(branchOffset);                                           \
        } else {                                                            \
            ILOGV("|if-%s v%d,v%d,-", (_opname), vsrc1, vsrc2);             \
            FINISH(2);                                                      \
        }

#define HANDLE_OP_IF_XXZ(_opcode, _opname, _cmp)                            \
    HANDLE_OPCODE(_opcode /*vAA, +BBBB*/)                                   \
        vsrc1 = INST_AA(inst);                                              \
        if ((s4) GET_REGISTER(vsrc1) _cmp 0) {                              \
            int branchOffset = (s2)FETCH(1);    /* sign-extended */         \
            ILOGV("|if-%s v%d,+0x%04x", (_opname), vsrc1, branchOffset);    \
            ILOGV("> branch taken");                                        \
            if (branchOffset < 0)                                           \
                PERIODIC_CHECKS(kInterpEntryInstr, branchOffset);           \
            FINISH(branchOffset);                                           \
        } else {                                                            \
            ILOGV("|if-%s v%d,-", (_opname), vsrc1);                        \
            FINISH(2);                                                      \
        }

#define HANDLE_UNOP(_opcode, _opname, _pfx, _sfx, _type)                    \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s v%d,v%d", (_opname), vdst, vsrc1);                       \
        SET_REGISTER##_type(vdst, _pfx GET_REGISTER##_type(vsrc1) _sfx);    \
        FINISH(1);

#define HANDLE_OP_X_INT(_opcode, _opname, _op, _chkdiv)                     \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        u2 srcRegs;                                                         \
        vdst = INST_AA(inst);                                               \
        srcRegs = FETCH(1);                                                 \
        vsrc1 = srcRegs & 0xff;                                             \
        vsrc2 = srcRegs >> 8;                                               \
        ILOGV("|%s-int v%d,v%d", (_opname), vdst, vsrc1);                   \
        if (_chkdiv != 0) {                                                 \
            s4 firstVal, secondVal, result;                                 \
            firstVal = GET_REGISTER(vsrc1);                                 \
            secondVal = GET_REGISTER(vsrc2);                                \
            if (secondVal == 0) {                                           \
                EXPORT_PC();                                                \
                dvmThrowException("Ljava/lang/ArithmeticException;",        \
                    "divide by zero");                                      \
                GOTO_exceptionThrown();                                     \
            }                                                               \
            if ((u4)firstVal == 0x80000000 && secondVal == -1) {            \
                if (_chkdiv == 1)                                           \
                    result = firstVal;  /* division */                      \
                else                                                        \
                    result = 0;         /* remainder */                     \
            } else {                                                        \
                result = firstVal _op secondVal;                            \
            }                                                               \
            SET_REGISTER(vdst, result);                                     \
        } else {                                                            \
            /* non-div/rem case */                                          \
            SET_REGISTER(vdst,                                              \
                (s4) GET_REGISTER(vsrc1) _op (s4) GET_REGISTER(vsrc2));     \
        }                                                                   \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_SHX_INT(_opcode, _opname, _cast, _op)                     \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        u2 srcRegs;                                                         \
        vdst = INST_AA(inst);                                               \
        srcRegs = FETCH(1);                                                 \
        vsrc1 = srcRegs & 0xff;                                             \
        vsrc2 = srcRegs >> 8;                                               \
        ILOGV("|%s-int v%d,v%d", (_opname), vdst, vsrc1);                   \
        SET_REGISTER(vdst,                                                  \
            _cast GET_REGISTER(vsrc1) _op (GET_REGISTER(vsrc2) & 0x1f));    \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_X_INT_LIT16(_opcode, _opname, _op, _chkdiv)               \
    HANDLE_OPCODE(_opcode /*vA, vB, #+CCCC*/)                               \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        vsrc2 = FETCH(1);                                                   \
        ILOGV("|%s-int/lit16 v%d,v%d,#+0x%04x",                             \
            (_opname), vdst, vsrc1, vsrc2);                                 \
        if (_chkdiv != 0) {                                                 \
            s4 firstVal, result;                                            \
            firstVal = GET_REGISTER(vsrc1);                                 \
            if ((s2) vsrc2 == 0) {                                          \
                EXPORT_PC();                                                \
                dvmThrowException("Ljava/lang/ArithmeticException;",        \
                    "divide by zero");                                      \
                GOTO_exceptionThrown();                                      \
            }                                                               \
            if ((u4)firstVal == 0x80000000 && ((s2) vsrc2) == -1) {         \
                /* won't generate /lit16 instr for this; check anyway */    \
                if (_chkdiv == 1)                                           \
                    result = firstVal;  /* division */                      \
                else                                                        \
                    result = 0;         /* remainder */                     \
            } else {                                                        \
                result = firstVal _op (s2) vsrc2;                           \
            }                                                               \
            SET_REGISTER(vdst, result);                                     \
        } else {                                                            \
            /* non-div/rem case */                                          \
            SET_REGISTER(vdst, GET_REGISTER(vsrc1) _op (s2) vsrc2);         \
        }                                                                   \
        FINISH(2);

#define HANDLE_OP_X_INT_LIT8(_opcode, _opname, _op, _chkdiv)                \
    HANDLE_OPCODE(_opcode /*vAA, vBB, #+CC*/)                               \
    {                                                                       \
        u2 litInfo;                                                         \
        vdst = INST_AA(inst);                                               \
        litInfo = FETCH(1);                                                 \
        vsrc1 = litInfo & 0xff;                                             \
        vsrc2 = litInfo >> 8;       /* constant */                          \
        ILOGV("|%s-int/lit8 v%d,v%d,#+0x%02x",                              \
            (_opname), vdst, vsrc1, vsrc2);                                 \
        if (_chkdiv != 0) {                                                 \
            s4 firstVal, result;                                            \
            firstVal = GET_REGISTER(vsrc1);                                 \
            if ((s1) vsrc2 == 0) {                                          \
                EXPORT_PC();                                                \
                dvmThrowException("Ljava/lang/ArithmeticException;",        \
                    "divide by zero");                                      \
                GOTO_exceptionThrown();                                     \
            }                                                               \
            if ((u4)firstVal == 0x80000000 && ((s1) vsrc2) == -1) {         \
                if (_chkdiv == 1)                                           \
                    result = firstVal;  /* division */                      \
                else                                                        \
                    result = 0;         /* remainder */                     \
            } else {                                                        \
                result = firstVal _op ((s1) vsrc2);                         \
            }                                                               \
            SET_REGISTER(vdst, result);                                     \
        } else {                                                            \
            SET_REGISTER(vdst,                                              \
                (s4) GET_REGISTER(vsrc1) _op (s1) vsrc2);                   \
        }                                                                   \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_SHX_INT_LIT8(_opcode, _opname, _cast, _op)                \
    HANDLE_OPCODE(_opcode /*vAA, vBB, #+CC*/)                               \
    {                                                                       \
        u2 litInfo;                                                         \
        vdst = INST_AA(inst);                                               \
        litInfo = FETCH(1);                                                 \
        vsrc1 = litInfo & 0xff;                                             \
        vsrc2 = litInfo >> 8;       /* constant */                          \
        ILOGV("|%s-int/lit8 v%d,v%d,#+0x%02x",                              \
            (_opname), vdst, vsrc1, vsrc2);                                 \
        SET_REGISTER(vdst,                                                  \
            _cast GET_REGISTER(vsrc1) _op (vsrc2 & 0x1f));                  \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_X_INT_2ADDR(_opcode, _opname, _op, _chkdiv)               \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s-int-2addr v%d,v%d", (_opname), vdst, vsrc1);             \
        if (_chkdiv != 0) {                                                 \
            s4 firstVal, secondVal, result;                                 \
            firstVal = GET_REGISTER(vdst);                                  \
            secondVal = GET_REGISTER(vsrc1);                                \
            if (secondVal == 0) {                                           \
                EXPORT_PC();                                                \
                dvmThrowException("Ljava/lang/ArithmeticException;",        \
                    "divide by zero");                                      \
                GOTO_exceptionThrown();                                     \
            }                                                               \
            if ((u4)firstVal == 0x80000000 && secondVal == -1) {            \
                if (_chkdiv == 1)                                           \
                    result = firstVal;  /* division */                      \
                else                                                        \
                    result = 0;         /* remainder */                     \
            } else {                                                        \
                result = firstVal _op secondVal;                            \
            }                                                               \
            SET_REGISTER(vdst, result);                                     \
        } else {                                                            \
            SET_REGISTER(vdst,                                              \
                (s4) GET_REGISTER(vdst) _op (s4) GET_REGISTER(vsrc1));      \
        }                                                                   \
        FINISH(1);

#define HANDLE_OP_SHX_INT_2ADDR(_opcode, _opname, _cast, _op)               \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s-int-2addr v%d,v%d", (_opname), vdst, vsrc1);             \
        SET_REGISTER(vdst,                                                  \
            _cast GET_REGISTER(vdst) _op (GET_REGISTER(vsrc1) & 0x1f));     \
        FINISH(1);

#define HANDLE_OP_X_LONG(_opcode, _opname, _op, _chkdiv)                    \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        u2 srcRegs;                                                         \
        vdst = INST_AA(inst);                                               \
        srcRegs = FETCH(1);                                                 \
        vsrc1 = srcRegs & 0xff;                                             \
        vsrc2 = srcRegs >> 8;                                               \
        ILOGV("|%s-long v%d,v%d,v%d", (_opname), vdst, vsrc1, vsrc2);       \
        if (_chkdiv != 0) {                                                 \
            s8 firstVal, secondVal, result;                                 \
            firstVal = GET_REGISTER_WIDE(vsrc1);                            \
            secondVal = GET_REGISTER_WIDE(vsrc2);                           \
            if (secondVal == 0LL) {                                         \
                EXPORT_PC();                                                \
                dvmThrowException("Ljava/lang/ArithmeticException;",        \
                    "divide by zero");                                      \
                GOTO_exceptionThrown();                                     \
            }                                                               \
            if ((u8)firstVal == 0x8000000000000000ULL &&                    \
                secondVal == -1LL)                                          \
            {                                                               \
                if (_chkdiv == 1)                                           \
                    result = firstVal;  /* division */                      \
                else                                                        \
                    result = 0;         /* remainder */                     \
            } else {                                                        \
                result = firstVal _op secondVal;                            \
            }                                                               \
            SET_REGISTER_WIDE(vdst, result);                                \
        } else {                                                            \
            SET_REGISTER_WIDE(vdst,                                         \
                (s8) GET_REGISTER_WIDE(vsrc1) _op (s8) GET_REGISTER_WIDE(vsrc2)); \
        }                                                                   \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_SHX_LONG(_opcode, _opname, _cast, _op)                    \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        u2 srcRegs;                                                         \
        vdst = INST_AA(inst);                                               \
        srcRegs = FETCH(1);                                                 \
        vsrc1 = srcRegs & 0xff;                                             \
        vsrc2 = srcRegs >> 8;                                               \
        ILOGV("|%s-long v%d,v%d,v%d", (_opname), vdst, vsrc1, vsrc2);       \
        SET_REGISTER_WIDE(vdst,                                             \
            _cast GET_REGISTER_WIDE(vsrc1) _op (GET_REGISTER(vsrc2) & 0x3f)); \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_X_LONG_2ADDR(_opcode, _opname, _op, _chkdiv)              \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s-long-2addr v%d,v%d", (_opname), vdst, vsrc1);            \
        if (_chkdiv != 0) {                                                 \
            s8 firstVal, secondVal, result;                                 \
            firstVal = GET_REGISTER_WIDE(vdst);                             \
            secondVal = GET_REGISTER_WIDE(vsrc1);                           \
            if (secondVal == 0LL) {                                         \
                EXPORT_PC();                                                \
                dvmThrowException("Ljava/lang/ArithmeticException;",        \
                    "divide by zero");                                      \
                GOTO_exceptionThrown();                                     \
            }                                                               \
            if ((u8)firstVal == 0x8000000000000000ULL &&                    \
                secondVal == -1LL)                                          \
            {                                                               \
                if (_chkdiv == 1)                                           \
                    result = firstVal;  /* division */                      \
                else                                                        \
                    result = 0;         /* remainder */                     \
            } else {                                                        \
                result = firstVal _op secondVal;                            \
            }                                                               \
            SET_REGISTER_WIDE(vdst, result);                                \
        } else {                                                            \
            SET_REGISTER_WIDE(vdst,                                         \
                (s8) GET_REGISTER_WIDE(vdst) _op (s8)GET_REGISTER_WIDE(vsrc1));\
        }                                                                   \
        FINISH(1);

#define HANDLE_OP_SHX_LONG_2ADDR(_opcode, _opname, _cast, _op)              \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s-long-2addr v%d,v%d", (_opname), vdst, vsrc1);            \
        SET_REGISTER_WIDE(vdst,                                             \
            _cast GET_REGISTER_WIDE(vdst) _op (GET_REGISTER(vsrc1) & 0x3f)); \
        FINISH(1);

#define HANDLE_OP_X_FLOAT(_opcode, _opname, _op)                            \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        u2 srcRegs;                                                         \
        vdst = INST_AA(inst);                                               \
        srcRegs = FETCH(1);                                                 \
        vsrc1 = srcRegs & 0xff;                                             \
        vsrc2 = srcRegs >> 8;                                               \
        ILOGV("|%s-float v%d,v%d,v%d", (_opname), vdst, vsrc1, vsrc2);      \
        SET_REGISTER_FLOAT(vdst,                                            \
            GET_REGISTER_FLOAT(vsrc1) _op GET_REGISTER_FLOAT(vsrc2));       \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_X_DOUBLE(_opcode, _opname, _op)                           \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        u2 srcRegs;                                                         \
        vdst = INST_AA(inst);                                               \
        srcRegs = FETCH(1);                                                 \
        vsrc1 = srcRegs & 0xff;                                             \
        vsrc2 = srcRegs >> 8;                                               \
        ILOGV("|%s-double v%d,v%d,v%d", (_opname), vdst, vsrc1, vsrc2);     \
        SET_REGISTER_DOUBLE(vdst,                                           \
            GET_REGISTER_DOUBLE(vsrc1) _op GET_REGISTER_DOUBLE(vsrc2));     \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_X_FLOAT_2ADDR(_opcode, _opname, _op)                      \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s-float-2addr v%d,v%d", (_opname), vdst, vsrc1);           \
        SET_REGISTER_FLOAT(vdst,                                            \
            GET_REGISTER_FLOAT(vdst) _op GET_REGISTER_FLOAT(vsrc1));        \
        FINISH(1);

#define HANDLE_OP_X_DOUBLE_2ADDR(_opcode, _opname, _op)                     \
    HANDLE_OPCODE(_opcode /*vA, vB*/)                                       \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);                                               \
        ILOGV("|%s-double-2addr v%d,v%d", (_opname), vdst, vsrc1);          \
        SET_REGISTER_DOUBLE(vdst,                                           \
            GET_REGISTER_DOUBLE(vdst) _op GET_REGISTER_DOUBLE(vsrc1));      \
        FINISH(1);

#define HANDLE_OP_AGET(_opcode, _opname, _type, _regsize)                   \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        ArrayObject* arrayObj;                                              \
        u2 arrayInfo;                                                       \
        EXPORT_PC();                                                        \
        vdst = INST_AA(inst);                                               \
        arrayInfo = FETCH(1);                                               \
        vsrc1 = arrayInfo & 0xff;    /* array ptr */                        \
        vsrc2 = arrayInfo >> 8;      /* index */                            \
        ILOGV("|aget%s v%d,v%d,v%d", (_opname), vdst, vsrc1, vsrc2);        \
        arrayObj = (ArrayObject*) GET_REGISTER(vsrc1);                      \
        if (!checkForNull((Object*) arrayObj))                              \
            GOTO_exceptionThrown();                                         \
        if (GET_REGISTER(vsrc2) >= arrayObj->length) {                      \
            LOGV("Invalid array access: %p %d (len=%d)\n",                  \
                arrayObj, vsrc2, arrayObj->length);                         \
            dvmThrowException("Ljava/lang/ArrayIndexOutOfBoundsException;", \
                NULL);                                                      \
            GOTO_exceptionThrown();                                         \
        }                                                                   \
        SET_REGISTER##_regsize(vdst,                                        \
            ((_type*) arrayObj->contents)[GET_REGISTER(vsrc2)]);            \
        ILOGV("+ AGET[%d]=0x%x", GET_REGISTER(vsrc2), GET_REGISTER(vdst));  \
    }                                                                       \
    FINISH(2);

#define HANDLE_OP_APUT(_opcode, _opname, _type, _regsize)                   \
    HANDLE_OPCODE(_opcode /*vAA, vBB, vCC*/)                                \
    {                                                                       \
        ArrayObject* arrayObj;                                              \
        u2 arrayInfo;                                                       \
        EXPORT_PC();                                                        \
        vdst = INST_AA(inst);       /* AA: source value */                  \
        arrayInfo = FETCH(1);                                               \
        vsrc1 = arrayInfo & 0xff;   /* BB: array ptr */                     \
        vsrc2 = arrayInfo >> 8;     /* CC: index */                         \
        ILOGV("|aput%s v%d,v%d,v%d", (_opname), vdst, vsrc1, vsrc2);        \
        arrayObj = (ArrayObject*) GET_REGISTER(vsrc1);                      \
        if (!checkForNull((Object*) arrayObj))                              \
            GOTO_exceptionThrown();                                         \
        if (GET_REGISTER(vsrc2) >= arrayObj->length) {                      \
            dvmThrowException("Ljava/lang/ArrayIndexOutOfBoundsException;", \
                NULL);                                                      \
            GOTO_exceptionThrown();                                         \
        }                                                                   \
        ILOGV("+ APUT[%d]=0x%08x", GET_REGISTER(vsrc2), GET_REGISTER(vdst));\
        ((_type*) arrayObj->contents)[GET_REGISTER(vsrc2)] =                \
            GET_REGISTER##_regsize(vdst);                                   \
    }                                                                       \
    FINISH(2);

/*
 * It's possible to get a bad value out of a field with sub-32-bit stores
 * because the -quick versions always operate on 32 bits.  Consider:
 *   short foo = -1  (sets a 32-bit register to 0xffffffff)
 *   iput-quick foo  (writes all 32 bits to the field)
 *   short bar = 1   (sets a 32-bit register to 0x00000001)
 *   iput-short      (writes the low 16 bits to the field)
 *   iget-quick foo  (reads all 32 bits from the field, yielding 0xffff0001)
 * This can only happen when optimized and non-optimized code has interleaved
 * access to the same field.  This is unlikely but possible.
 *
 * The easiest way to fix this is to always read/write 32 bits at a time.  On
 * a device with a 16-bit data bus this is sub-optimal.  (The alternative
 * approach is to have sub-int versions of iget-quick, but now we're wasting
 * Dalvik instruction space and making it less likely that handler code will
 * already be in the CPU i-cache.)
 */
#define HANDLE_IGET_X(_opcode, _opname, _ftype, _regsize)                   \
    HANDLE_OPCODE(_opcode /*vA, vB, field@CCCC*/)                           \
    {                                                                       \
        InstField* ifield;                                                  \
        Object* obj;                                                        \
        EXPORT_PC();                                                        \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);   /* object ptr */                            \
        ref = FETCH(1);         /* field ref */                             \
        ILOGV("|iget%s v%d,v%d,field@0x%04x", (_opname), vdst, vsrc1, ref); \
        obj = (Object*) GET_REGISTER(vsrc1);                                \
        if (!checkForNull(obj))                                             \
            GOTO_exceptionThrown();                                         \
        ifield = (InstField*) dvmDexGetResolvedField(methodClassDex, ref);  \
        if (ifield == NULL) {                                               \
            ifield = dvmResolveInstField(curMethod->clazz, ref);            \
            if (ifield == NULL)                                             \
                GOTO_exceptionThrown();                                     \
        }                                                                   \
        SET_REGISTER##_regsize(vdst,                                        \
            dvmGetField##_ftype(obj, ifield->byteOffset));                  \
        ILOGV("+ IGET '%s'=0x%08llx", ifield->field.name,                   \
            (u8) GET_REGISTER##_regsize(vdst));                             \
        UPDATE_FIELD_GET(&ifield->field);                                   \
    }                                                                       \
    FINISH(2);

#define HANDLE_IGET_X_QUICK(_opcode, _opname, _ftype, _regsize)             \
    HANDLE_OPCODE(_opcode /*vA, vB, field@CCCC*/)                           \
    {                                                                       \
        Object* obj;                                                        \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);   /* object ptr */                            \
        ref = FETCH(1);         /* field offset */                          \
        ILOGV("|iget%s-quick v%d,v%d,field@+%u",                            \
            (_opname), vdst, vsrc1, ref);                                   \
        obj = (Object*) GET_REGISTER(vsrc1);                                \
        if (!checkForNullExportPC(obj, fp, pc))                             \
            GOTO_exceptionThrown();                                         \
        SET_REGISTER##_regsize(vdst, dvmGetField##_ftype(obj, ref));        \
        ILOGV("+ IGETQ %d=0x%08llx", ref,                                   \
            (u8) GET_REGISTER##_regsize(vdst));                             \
    }                                                                       \
    FINISH(2);

#define HANDLE_IPUT_X(_opcode, _opname, _ftype, _regsize)                   \
    HANDLE_OPCODE(_opcode /*vA, vB, field@CCCC*/)                           \
    {                                                                       \
        InstField* ifield;                                                  \
        Object* obj;                                                        \
        EXPORT_PC();                                                        \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);   /* object ptr */                            \
        ref = FETCH(1);         /* field ref */                             \
        ILOGV("|iput%s v%d,v%d,field@0x%04x", (_opname), vdst, vsrc1, ref); \
        obj = (Object*) GET_REGISTER(vsrc1);                                \
        if (!checkForNull(obj))                                             \
            GOTO_exceptionThrown();                                         \
        ifield = (InstField*) dvmDexGetResolvedField(methodClassDex, ref);  \
        if (ifield == NULL) {                                               \
            ifield = dvmResolveInstField(curMethod->clazz, ref);            \
            if (ifield == NULL)                                             \
                GOTO_exceptionThrown();                                     \
        }                                                                   \
        dvmSetField##_ftype(obj, ifield->byteOffset,                        \
            GET_REGISTER##_regsize(vdst));                                  \
        ILOGV("+ IPUT '%s'=0x%08llx", ifield->field.name,                   \
            (u8) GET_REGISTER##_regsize(vdst));                             \
        UPDATE_FIELD_PUT(&ifield->field);                                   \
    }                                                                       \
    FINISH(2);

#define HANDLE_IPUT_X_QUICK(_opcode, _opname, _ftype, _regsize)             \
    HANDLE_OPCODE(_opcode /*vA, vB, field@CCCC*/)                           \
    {                                                                       \
        Object* obj;                                                        \
        vdst = INST_A(inst);                                                \
        vsrc1 = INST_B(inst);   /* object ptr */                            \
        ref = FETCH(1);         /* field offset */                          \
        ILOGV("|iput%s-quick v%d,v%d,field@0x%04x",                         \
            (_opname), vdst, vsrc1, ref);                                   \
        obj = (Object*) GET_REGISTER(vsrc1);                                \
        if (!checkForNullExportPC(obj, fp, pc))                             \
            GOTO_exceptionThrown();                                         \
        dvmSetField##_ftype(obj, ref, GET_REGISTER##_regsize(vdst));        \
        ILOGV("+ IPUTQ %d=0x%08llx", ref,                                   \
            (u8) GET_REGISTER##_regsize(vdst));                             \
    }                                                                       \
    FINISH(2);

#define HANDLE_SGET_X(_opcode, _opname, _ftype, _regsize)                   \
    HANDLE_OPCODE(_opcode /*vAA, field@BBBB*/)                              \
    {                                                                       \
        StaticField* sfield;                                                \
        vdst = INST_AA(inst);                                               \
        ref = FETCH(1);         /* field ref */                             \
        ILOGV("|sget%s v%d,sfield@0x%04x", (_opname), vdst, ref);           \
        sfield = (StaticField*)dvmDexGetResolvedField(methodClassDex, ref); \
        if (sfield == NULL) {                                               \
            EXPORT_PC();                                                    \
            sfield = dvmResolveStaticField(curMethod->clazz, ref);          \
            if (sfield == NULL)                                             \
                GOTO_exceptionThrown();                                     \
        }                                                                   \
        SET_REGISTER##_regsize(vdst, dvmGetStaticField##_ftype(sfield));    \
        ILOGV("+ SGET '%s'=0x%08llx",                                       \
            sfield->field.name, (u8)GET_REGISTER##_regsize(vdst));          \
        UPDATE_FIELD_GET(&sfield->field);                                   \
    }                                                                       \
    FINISH(2);

#define HANDLE_SPUT_X(_opcode, _opname, _ftype, _regsize)                   \
    HANDLE_OPCODE(_opcode /*vAA, field@BBBB*/)                              \
    {                                                                       \
        StaticField* sfield;                                                \
        vdst = INST_AA(inst);                                               \
        ref = FETCH(1);         /* field ref */                             \
        ILOGV("|sput%s v%d,sfield@0x%04x", (_opname), vdst, ref);           \
        sfield = (StaticField*)dvmDexGetResolvedField(methodClassDex, ref); \
        if (sfield == NULL) {                                               \
            EXPORT_PC();                                                    \
            sfield = dvmResolveStaticField(curMethod->clazz, ref);          \
            if (sfield == NULL)                                             \
                GOTO_exceptionThrown();                                     \
        }                                                                   \
        dvmSetStaticField##_ftype(sfield, GET_REGISTER##_regsize(vdst));    \
        ILOGV("+ SPUT '%s'=0x%08llx",                                       \
            sfield->field.name, (u8)GET_REGISTER##_regsize(vdst));          \
        UPDATE_FIELD_PUT(&sfield->field);                                   \
    }                                                                       \
    FINISH(2);


/* File: c/OP_BREAKPOINT.c */
HANDLE_OPCODE(OP_BREAKPOINT)
#if (INTERP_TYPE == INTERP_DBG) && defined(WITH_DEBUGGER)
    {
        /*
         * Restart this instruction with the original opcode.  We do
         * this by simply jumping to the handler.
         *
         * It's probably not necessary to update "inst", but we do it
         * for the sake of anything that needs to do disambiguation in a
         * common handler with INST_INST.
         *
         * The breakpoint itself is handled over in updateDebugger(),
         * because we need to detect other events (method entry, single
         * step) and report them in the same event packet, and we're not
         * yet handling those through breakpoint instructions.  By the
         * time we get here, the breakpoint has already been handled and
         * the thread resumed.
         */
        u1 originalOpCode = dvmGetOriginalOpCode(pc);
        LOGV("+++ break 0x%02x (0x%04x -> 0x%04x)\n", originalOpCode, inst,
            INST_REPLACE_OP(inst, originalOpCode));
        inst = INST_REPLACE_OP(inst, originalOpCode);
        FINISH_BKPT(originalOpCode);
    }
#else
    LOGE("Breakpoint hit in non-debug interpreter\n");
    dvmAbort();
#endif
OP_END

/* File: c/OP_EXECUTE_INLINE_RANGE.c */
HANDLE_OPCODE(OP_EXECUTE_INLINE_RANGE /*{vCCCC..v(CCCC+AA-1)}, inline@BBBB*/)
    {
        u4 arg0, arg1, arg2, arg3;
        arg0 = arg1 = arg2 = arg3 = 0;      /* placate gcc */

        EXPORT_PC();

        vsrc1 = INST_AA(inst);      /* #of args */
        ref = FETCH(1);             /* inline call "ref" */
        vdst = FETCH(2);            /* range base */
        ILOGV("|execute-inline-range args=%d @%d {regs=v%d-v%d}",
            vsrc1, ref, vdst, vdst+vsrc1-1);

        assert((vdst >> 16) == 0);  // 16-bit type -or- high 16 bits clear
        assert(vsrc1 <= 4);

        switch (vsrc1) {
        case 4:
            arg3 = GET_REGISTER(vdst+3);
            /* fall through */
        case 3:
            arg2 = GET_REGISTER(vdst+2);
            /* fall through */
        case 2:
            arg1 = GET_REGISTER(vdst+1);
            /* fall through */
        case 1:
            arg0 = GET_REGISTER(vdst+0);
            /* fall through */
        default:        // case 0
            ;
        }

#if INTERP_TYPE == INTERP_DBG
        if (!dvmPerformInlineOp4Dbg(arg0, arg1, arg2, arg3, &retval, ref))
            GOTO_exceptionThrown();
#else
        if (!dvmPerformInlineOp4Std(arg0, arg1, arg2, arg3, &retval, ref))
            GOTO_exceptionThrown();
#endif
    }
    FINISH(3);
OP_END

/* File: c/gotoTargets.c */
/*
 * C footer.  This has some common code shared by the various targets.
 */

/*
 * Everything from here on is a "goto target".  In the basic interpreter
 * we jump into these targets and then jump directly to the handler for
 * next instruction.  Here, these are subroutines that return to the caller.
 */

GOTO_TARGET(filledNewArray, bool methodCallRange)
    {
        ClassObject* arrayClass;
        ArrayObject* newArray;
        u4* contents;
        char typeCh;
        int i;
        u4 arg5;

        EXPORT_PC();

        ref = FETCH(1);             /* class ref */
        vdst = FETCH(2);            /* first 4 regs -or- range base */

        if (methodCallRange) {
            vsrc1 = INST_AA(inst);  /* #of elements */
            arg5 = -1;              /* silence compiler warning */
            ILOGV("|filled-new-array-range args=%d @0x%04x {regs=v%d-v%d}",
                vsrc1, ref, vdst, vdst+vsrc1-1);
        } else {
            arg5 = INST_A(inst);
            vsrc1 = INST_B(inst);   /* #of elements */
            ILOGV("|filled-new-array args=%d @0x%04x {regs=0x%04x %x}",
                vsrc1, ref, vdst, arg5);
        }

        /*
         * Resolve the array class.
         */
        arrayClass = dvmDexGetResolvedClass(methodClassDex, ref);
        if (arrayClass == NULL) {
            arrayClass = dvmResolveClass(curMethod->clazz, ref, false);
            if (arrayClass == NULL)
                GOTO_exceptionThrown();
        }
        /*
        if (!dvmIsArrayClass(arrayClass)) {
            dvmThrowException("Ljava/lang/RuntimeError;",
                "filled-new-array needs array class");
            GOTO_exceptionThrown();
        }
        */
        /* verifier guarantees this is an array class */
        assert(dvmIsArrayClass(arrayClass));
        assert(dvmIsClassInitialized(arrayClass));

        /*
         * Create an array of the specified type.
         */
        LOGVV("+++ filled-new-array type is '%s'\n", arrayClass->descriptor);
        typeCh = arrayClass->descriptor[1];
        if (typeCh == 'D' || typeCh == 'J') {
            /* category 2 primitives not allowed */
            dvmThrowException("Ljava/lang/RuntimeError;",
                "bad filled array req");
            GOTO_exceptionThrown();
        } else if (typeCh != 'L' && typeCh != '[' && typeCh != 'I') {
            /* TODO: requires multiple "fill in" loops with different widths */
            LOGE("non-int primitives not implemented\n");
            dvmThrowException("Ljava/lang/InternalError;",
                "filled-new-array not implemented for anything but 'int'");
            GOTO_exceptionThrown();
        }

        newArray = dvmAllocArrayByClass(arrayClass, vsrc1, ALLOC_DONT_TRACK);
        if (newArray == NULL)
            GOTO_exceptionThrown();

        /*
         * Fill in the elements.  It's legal for vsrc1 to be zero.
         */
        contents = (u4*) newArray->contents;
        if (methodCallRange) {
            for (i = 0; i < vsrc1; i++)
                contents[i] = GET_REGISTER(vdst+i);
        } else {
            assert(vsrc1 <= 5);
            if (vsrc1 == 5) {
                contents[4] = GET_REGISTER(arg5);
                vsrc1--;
            }
            for (i = 0; i < vsrc1; i++) {
                contents[i] = GET_REGISTER(vdst & 0x0f);
                vdst >>= 4;
            }
        }

        retval.l = newArray;
    }
    FINISH(3);
GOTO_TARGET_END


GOTO_TARGET(invokeVirtual, bool methodCallRange)
    {
        Method* baseMethod;
        Object* thisPtr;

        EXPORT_PC();

        vsrc1 = INST_AA(inst);      /* AA (count) or BA (count + arg 5) */
        ref = FETCH(1);             /* method ref */
        vdst = FETCH(2);            /* 4 regs -or- first reg */

        /*
         * The object against which we are executing a method is always
         * in the first argument.
         */
        if (methodCallRange) {
            assert(vsrc1 > 0);
            ILOGV("|invoke-virtual-range args=%d @0x%04x {regs=v%d-v%d}",
                vsrc1, ref, vdst, vdst+vsrc1-1);
            thisPtr = (Object*) GET_REGISTER(vdst);
        } else {
            assert((vsrc1>>4) > 0);
            ILOGV("|invoke-virtual args=%d @0x%04x {regs=0x%04x %x}",
                vsrc1 >> 4, ref, vdst, vsrc1 & 0x0f);
            thisPtr = (Object*) GET_REGISTER(vdst & 0x0f);
        }

        if (!checkForNull(thisPtr))
            GOTO_exceptionThrown();

        /*
         * Resolve the method.  This is the correct method for the static
         * type of the object.  We also verify access permissions here.
         */
        baseMethod = dvmDexGetResolvedMethod(methodClassDex, ref);
        if (baseMethod == NULL) {
            baseMethod = dvmResolveMethod(curMethod->clazz, ref,METHOD_VIRTUAL);
            if (baseMethod == NULL) {
                ILOGV("+ unknown method or access denied\n");
                GOTO_exceptionThrown();
            }
        }

        /*
         * Combine the object we found with the vtable offset in the
         * method.
         */
        assert(baseMethod->methodIndex < thisPtr->clazz->vtableCount);
        methodToCall = thisPtr->clazz->vtable[baseMethod->methodIndex];

#if 0
        if (dvmIsAbstractMethod(methodToCall)) {
            /*
             * This can happen if you create two classes, Base and Sub, where
             * Sub is a sub-class of Base.  Declare a protected abstract
             * method foo() in Base, and invoke foo() from a method in Base.
             * Base is an "abstract base class" and is never instantiated
             * directly.  Now, Override foo() in Sub, and use Sub.  This
             * Works fine unless Sub stops providing an implementation of
             * the method.
             */
            dvmThrowException("Ljava/lang/AbstractMethodError;",
                "abstract method not implemented");
            GOTO_exceptionThrown();
        }
#else
        assert(!dvmIsAbstractMethod(methodToCall) ||
            methodToCall->nativeFunc != NULL);
#endif

        LOGVV("+++ base=%s.%s virtual[%d]=%s.%s\n",
            baseMethod->clazz->descriptor, baseMethod->name,
            (u4) baseMethod->methodIndex,
            methodToCall->clazz->descriptor, methodToCall->name);
        assert(methodToCall != NULL);

#if 0
        if (vsrc1 != methodToCall->insSize) {
            LOGW("WRONG METHOD: base=%s.%s virtual[%d]=%s.%s\n",
                baseMethod->clazz->descriptor, baseMethod->name,
                (u4) baseMethod->methodIndex,
                methodToCall->clazz->descriptor, methodToCall->name);
            //dvmDumpClass(baseMethod->clazz);
            //dvmDumpClass(methodToCall->clazz);
            dvmDumpAllClasses(0);
        }
#endif

        GOTO_invokeMethod(methodCallRange, methodToCall, vsrc1, vdst);
    }
GOTO_TARGET_END

GOTO_TARGET(invokeSuper, bool methodCallRange)
    {
        Method* baseMethod;
        u2 thisReg;

        EXPORT_PC();

        vsrc1 = INST_AA(inst);      /* AA (count) or BA (count + arg 5) */
        ref = FETCH(1);             /* method ref */
        vdst = FETCH(2);            /* 4 regs -or- first reg */

        if (methodCallRange) {
            ILOGV("|invoke-super-range args=%d @0x%04x {regs=v%d-v%d}",
                vsrc1, ref, vdst, vdst+vsrc1-1);
            thisReg = vdst;
        } else {
            ILOGV("|invoke-super args=%d @0x%04x {regs=0x%04x %x}",
                vsrc1 >> 4, ref, vdst, vsrc1 & 0x0f);
            thisReg = vdst & 0x0f;
        }
        /* impossible in well-formed code, but we must check nevertheless */
        if (!checkForNull((Object*) GET_REGISTER(thisReg)))
            GOTO_exceptionThrown();

        /*
         * Resolve the method.  This is the correct method for the static
         * type of the object.  We also verify access permissions here.
         * The first arg to dvmResolveMethod() is just the referring class
         * (used for class loaders and such), so we don't want to pass
         * the superclass into the resolution call.
         */
        baseMethod = dvmDexGetResolvedMethod(methodClassDex, ref);
        if (baseMethod == NULL) {
            baseMethod = dvmResolveMethod(curMethod->clazz, ref,METHOD_VIRTUAL);
            if (baseMethod == NULL) {
                ILOGV("+ unknown method or access denied\n");
                GOTO_exceptionThrown();
            }
        }

        /*
         * Combine the object we found with the vtable offset in the
         * method's class.
         *
         * We're using the current method's class' superclass, not the
         * superclass of "this".  This is because we might be executing
         * in a method inherited from a superclass, and we want to run
         * in that class' superclass.
         */
        if (baseMethod->methodIndex >= curMethod->clazz->super->vtableCount) {
            /*
             * Method does not exist in the superclass.  Could happen if
             * superclass gets updated.
             */
            dvmThrowException("Ljava/lang/NoSuchMethodError;",
                baseMethod->name);
            GOTO_exceptionThrown();
        }
        methodToCall = curMethod->clazz->super->vtable[baseMethod->methodIndex];
#if 0
        if (dvmIsAbstractMethod(methodToCall)) {
            dvmThrowException("Ljava/lang/AbstractMethodError;",
                "abstract method not implemented");
            GOTO_exceptionThrown();
        }
#else
        assert(!dvmIsAbstractMethod(methodToCall) ||
            methodToCall->nativeFunc != NULL);
#endif
        LOGVV("+++ base=%s.%s super-virtual=%s.%s\n",
            baseMethod->clazz->descriptor, baseMethod->name,
            methodToCall->clazz->descriptor, methodToCall->name);
        assert(methodToCall != NULL);

        GOTO_invokeMethod(methodCallRange, methodToCall, vsrc1, vdst);
    }
GOTO_TARGET_END

GOTO_TARGET(invokeInterface, bool methodCallRange)
    {
        Object* thisPtr;
        ClassObject* thisClass;

        EXPORT_PC();

        vsrc1 = INST_AA(inst);      /* AA (count) or BA (count + arg 5) */
        ref = FETCH(1);             /* method ref */
        vdst = FETCH(2);            /* 4 regs -or- first reg */

        /*
         * The object against which we are executing a method is always
         * in the first argument.
         */
        if (methodCallRange) {
            assert(vsrc1 > 0);
            ILOGV("|invoke-interface-range args=%d @0x%04x {regs=v%d-v%d}",
                vsrc1, ref, vdst, vdst+vsrc1-1);
            thisPtr = (Object*) GET_REGISTER(vdst);
        } else {
            assert((vsrc1>>4) > 0);
            ILOGV("|invoke-interface args=%d @0x%04x {regs=0x%04x %x}",
                vsrc1 >> 4, ref, vdst, vsrc1 & 0x0f);
            thisPtr = (Object*) GET_REGISTER(vdst & 0x0f);
        }
        if (!checkForNull(thisPtr))
            GOTO_exceptionThrown();

        thisClass = thisPtr->clazz;

        /*
         * Given a class and a method index, find the Method* with the
         * actual code we want to execute.
         */
        methodToCall = dvmFindInterfaceMethodInCache(thisClass, ref, curMethod,
                        methodClassDex);
        if (methodToCall == NULL) {
            assert(dvmCheckException(self));
            GOTO_exceptionThrown();
        }

        GOTO_invokeMethod(methodCallRange, methodToCall, vsrc1, vdst);
    }
GOTO_TARGET_END

GOTO_TARGET(invokeDirect, bool methodCallRange)
    {
        u2 thisReg;

        vsrc1 = INST_AA(inst);      /* AA (count) or BA (count + arg 5) */
        ref = FETCH(1);             /* method ref */
        vdst = FETCH(2);            /* 4 regs -or- first reg */

        EXPORT_PC();

        if (methodCallRange) {
            ILOGV("|invoke-direct-range args=%d @0x%04x {regs=v%d-v%d}",
                vsrc1, ref, vdst, vdst+vsrc1-1);
            thisReg = vdst;
        } else {
            ILOGV("|invoke-direct args=%d @0x%04x {regs=0x%04x %x}",
                vsrc1 >> 4, ref, vdst, vsrc1 & 0x0f);
            thisReg = vdst & 0x0f;
        }
        if (!checkForNull((Object*) GET_REGISTER(thisReg)))
            GOTO_exceptionThrown();

        methodToCall = dvmDexGetResolvedMethod(methodClassDex, ref);
        if (methodToCall == NULL) {
            methodToCall = dvmResolveMethod(curMethod->clazz, ref,
                            METHOD_DIRECT);
            if (methodToCall == NULL) {
                ILOGV("+ unknown direct method\n");     // should be impossible
                GOTO_exceptionThrown();
            }
        }
        GOTO_invokeMethod(methodCallRange, methodToCall, vsrc1, vdst);
    }
GOTO_TARGET_END

GOTO_TARGET(invokeStatic, bool methodCallRange)
    vsrc1 = INST_AA(inst);      /* AA (count) or BA (count + arg 5) */
    ref = FETCH(1);             /* method ref */
    vdst = FETCH(2);            /* 4 regs -or- first reg */

    EXPORT_PC();

    if (methodCallRange)
        ILOGV("|invoke-static-range args=%d @0x%04x {regs=v%d-v%d}",
            vsrc1, ref, vdst, vdst+vsrc1-1);
    else
        ILOGV("|invoke-static args=%d @0x%04x {regs=0x%04x %x}",
            vsrc1 >> 4, ref, vdst, vsrc1 & 0x0f);

    methodToCall = dvmDexGetResolvedMethod(methodClassDex, ref);
    if (methodToCall == NULL) {
        methodToCall = dvmResolveMethod(curMethod->clazz, ref, METHOD_STATIC);
        if (methodToCall == NULL) {
            ILOGV("+ unknown method\n");
            GOTO_exceptionThrown();
        }
    }
    GOTO_invokeMethod(methodCallRange, methodToCall, vsrc1, vdst);
GOTO_TARGET_END

GOTO_TARGET(invokeVirtualQuick, bool methodCallRange)
    {
        Object* thisPtr;

        EXPORT_PC();

        vsrc1 = INST_AA(inst);      /* AA (count) or BA (count + arg 5) */
        ref = FETCH(1);             /* vtable index */
        vdst = FETCH(2);            /* 4 regs -or- first reg */

        /*
         * The object against which we are executing a method is always
         * in the first argument.
         */
        if (methodCallRange) {
            assert(vsrc1 > 0);
            ILOGV("|invoke-virtual-quick-range args=%d @0x%04x {regs=v%d-v%d}",
                vsrc1, ref, vdst, vdst+vsrc1-1);
            thisPtr = (Object*) GET_REGISTER(vdst);
        } else {
            assert((vsrc1>>4) > 0);
            ILOGV("|invoke-virtual-quick args=%d @0x%04x {regs=0x%04x %x}",
                vsrc1 >> 4, ref, vdst, vsrc1 & 0x0f);
            thisPtr = (Object*) GET_REGISTER(vdst & 0x0f);
        }

        if (!checkForNull(thisPtr))
            GOTO_exceptionThrown();

        /*
         * Combine the object we found with the vtable offset in the
         * method.
         */
        assert(ref < thisPtr->clazz->vtableCount);
        methodToCall = thisPtr->clazz->vtable[ref];

#if 0
        if (dvmIsAbstractMethod(methodToCall)) {
            dvmThrowException("Ljava/lang/AbstractMethodError;",
                "abstract method not implemented");
            GOTO_exceptionThrown();
        }
#else
        assert(!dvmIsAbstractMethod(methodToCall) ||
            methodToCall->nativeFunc != NULL);
#endif

        LOGVV("+++ virtual[%d]=%s.%s\n",
            ref, methodToCall->clazz->descriptor, methodToCall->name);
        assert(methodToCall != NULL);

        GOTO_invokeMethod(methodCallRange, methodToCall, vsrc1, vdst);
    }
GOTO_TARGET_END

GOTO_TARGET(invokeSuperQuick, bool methodCallRange)
    {
        u2 thisReg;

        EXPORT_PC();

        vsrc1 = INST_AA(inst);      /* AA (count) or BA (count + arg 5) */
        ref = FETCH(1);             /* vtable index */
        vdst = FETCH(2);            /* 4 regs -or- first reg */

        if (methodCallRange) {
            ILOGV("|invoke-super-quick-range args=%d @0x%04x {regs=v%d-v%d}",
                vsrc1, ref, vdst, vdst+vsrc1-1);
            thisReg = vdst;
        } else {
            ILOGV("|invoke-super-quick args=%d @0x%04x {regs=0x%04x %x}",
                vsrc1 >> 4, ref, vdst, vsrc1 & 0x0f);
            thisReg = vdst & 0x0f;
        }
        /* impossible in well-formed code, but we must check nevertheless */
        if (!checkForNull((Object*) GET_REGISTER(thisReg)))
            GOTO_exceptionThrown();

#if 0   /* impossible in optimized + verified code */
        if (ref >= curMethod->clazz->super->vtableCount) {
            dvmThrowException("Ljava/lang/NoSuchMethodError;", NULL);
            GOTO_exceptionThrown();
        }
#else
        assert(ref < curMethod->clazz->super->vtableCount);
#endif

        /*
         * Combine the object we found with the vtable offset in the
         * method's class.
         *
         * We're using the current method's class' superclass, not the
         * superclass of "this".  This is because we might be executing
         * in a method inherited from a superclass, and we want to run
         * in the method's class' superclass.
         */
        methodToCall = curMethod->clazz->super->vtable[ref];

#if 0
        if (dvmIsAbstractMethod(methodToCall)) {
            dvmThrowException("Ljava/lang/AbstractMethodError;",
                "abstract method not implemented");
            GOTO_exceptionThrown();
        }
#else
        assert(!dvmIsAbstractMethod(methodToCall) ||
            methodToCall->nativeFunc != NULL);
#endif
        LOGVV("+++ super-virtual[%d]=%s.%s\n",
            ref, methodToCall->clazz->descriptor, methodToCall->name);
        assert(methodToCall != NULL);

        GOTO_invokeMethod(methodCallRange, methodToCall, vsrc1, vdst);
    }
GOTO_TARGET_END



    /*
     * General handling for return-void, return, and return-wide.  Put the
     * return value in "retval" before jumping here.
     */
GOTO_TARGET(returnFromMethod)
    {
        StackSaveArea* saveArea;

        /*
         * We must do this BEFORE we pop the previous stack frame off, so
         * that the GC can see the return value (if any) in the local vars.
         *
         * Since this is now an interpreter switch point, we must do it before
         * we do anything at all.
         */
        PERIODIC_CHECKS(kInterpEntryReturn, 0);

        ILOGV("> retval=0x%llx (leaving %s.%s %s)",
            retval.j, curMethod->clazz->descriptor, curMethod->name,
            curMethod->shorty);
        //DUMP_REGS(curMethod, fp);

        saveArea = SAVEAREA_FROM_FP(fp);

#ifdef EASY_GDB
        debugSaveArea = saveArea;
#endif
#if (INTERP_TYPE == INTERP_DBG) && defined(WITH_PROFILER)
        TRACE_METHOD_EXIT(self, curMethod);
#endif

        /* back up to previous frame and see if we hit a break */
        fp = saveArea->prevFrame;
        assert(fp != NULL);
        if (dvmIsBreakFrame(fp)) {
            /* bail without popping the method frame from stack */
            LOGVV("+++ returned into break frame\n");
#if defined(WITH_JIT)
            /* Let the Jit know the return is terminating normally */
            CHECK_JIT();
#endif
            GOTO_bail();
        }

        /* update thread FP, and reset local variables */
        self->curFrame = fp;
        curMethod = SAVEAREA_FROM_FP(fp)->method;
        //methodClass = curMethod->clazz;
        methodClassDex = curMethod->clazz->pDvmDex;
        pc = saveArea->savedPc;
        ILOGD("> (return to %s.%s %s)", curMethod->clazz->descriptor,
            curMethod->name, curMethod->shorty);

        /* use FINISH on the caller's invoke instruction */
        //u2 invokeInstr = INST_INST(FETCH(0));
        if (true /*invokeInstr >= OP_INVOKE_VIRTUAL &&
            invokeInstr <= OP_INVOKE_INTERFACE*/)
        {
            FINISH(3);
        } else {
            //LOGE("Unknown invoke instr %02x at %d\n",
            //    invokeInstr, (int) (pc - curMethod->insns));
            assert(false);
        }
    }
GOTO_TARGET_END


    /*
     * Jump here when the code throws an exception.
     *
     * By the time we get here, the Throwable has been created and the stack
     * trace has been saved off.
     */
GOTO_TARGET(exceptionThrown)
    {
        Object* exception;
        int catchRelPc;

        /*
         * Since this is now an interpreter switch point, we must do it before
         * we do anything at all.
         */
        PERIODIC_CHECKS(kInterpEntryThrow, 0);

#if defined(WITH_JIT)
        // Something threw during trace selection - abort the current trace
        ABORT_JIT_TSELECT();
#endif
        /*
         * We save off the exception and clear the exception status.  While
         * processing the exception we might need to load some Throwable
         * classes, and we don't want class loader exceptions to get
         * confused with this one.
         */
        assert(dvmCheckException(self));
        exception = dvmGetException(self);
        dvmAddTrackedAlloc(exception, self);
        dvmClearException(self);

        LOGV("Handling exception %s at %s:%d\n",
            exception->clazz->descriptor, curMethod->name,
            dvmLineNumFromPC(curMethod, pc - curMethod->insns));

#if (INTERP_TYPE == INTERP_DBG) && defined(WITH_DEBUGGER)
        /*
         * Tell the debugger about it.
         *
         * TODO: if the exception was thrown by interpreted code, control
         * fell through native, and then back to us, we will report the
         * exception at the point of the throw and again here.  We can avoid
         * this by not reporting exceptions when we jump here directly from
         * the native call code above, but then we won't report exceptions
         * that were thrown *from* the JNI code (as opposed to *through* it).
         *
         * The correct solution is probably to ignore from-native exceptions
         * here, and have the JNI exception code do the reporting to the
         * debugger.
         */
        if (gDvm.debuggerActive) {
            void* catchFrame;
            catchRelPc = dvmFindCatchBlock(self, pc - curMethod->insns,
                        exception, true, &catchFrame);
            dvmDbgPostException(fp, pc - curMethod->insns, catchFrame,
                catchRelPc, exception);
        }
#endif

        /*
         * We need to unroll to the catch block or the nearest "break"
         * frame.
         *
         * A break frame could indicate that we have reached an intermediate
         * native call, or have gone off the top of the stack and the thread
         * needs to exit.  Either way, we return from here, leaving the
         * exception raised.
         *
         * If we do find a catch block, we want to transfer execution to
         * that point.
         *
         * Note this can cause an exception while resolving classes in
         * the "catch" blocks.
         */
        catchRelPc = dvmFindCatchBlock(self, pc - curMethod->insns,
                    exception, false, (void*)&fp);

        /*
         * Restore the stack bounds after an overflow.  This isn't going to
         * be correct in all circumstances, e.g. if JNI code devours the
         * exception this won't happen until some other exception gets
         * thrown.  If the code keeps pushing the stack bounds we'll end
         * up aborting the VM.
         *
         * Note we want to do this *after* the call to dvmFindCatchBlock,
         * because that may need extra stack space to resolve exception
         * classes (e.g. through a class loader).
         *
         * It's possible for the stack overflow handling to cause an
         * exception (specifically, class resolution in a "catch" block
         * during the call above), so we could see the thread's overflow
         * flag raised but actually be running in a "nested" interpreter
         * frame.  We don't allow doubled-up StackOverflowErrors, so
         * we can check for this by just looking at the exception type
         * in the cleanup function.  Also, we won't unroll past the SOE
         * point because the more-recent exception will hit a break frame
         * as it unrolls to here.
         */
        if (self->stackOverflowed)
            dvmCleanupStackOverflow(self, exception);

        if (catchRelPc < 0) {
            /* falling through to JNI code or off the bottom of the stack */
#if DVM_SHOW_EXCEPTION >= 2
            LOGD("Exception %s from %s:%d not caught locally\n",
                exception->clazz->descriptor, dvmGetMethodSourceFile(curMethod),
                dvmLineNumFromPC(curMethod, pc - curMethod->insns));
#endif
            dvmSetException(self, exception);
            dvmReleaseTrackedAlloc(exception, self);
            GOTO_bail();
        }

#if DVM_SHOW_EXCEPTION >= 3
        {
            const Method* catchMethod = SAVEAREA_FROM_FP(fp)->method;
            LOGD("Exception %s thrown from %s:%d to %s:%d\n",
                exception->clazz->descriptor, dvmGetMethodSourceFile(curMethod),
                dvmLineNumFromPC(curMethod, pc - curMethod->insns),
                dvmGetMethodSourceFile(catchMethod),
                dvmLineNumFromPC(catchMethod, catchRelPc));
        }
#endif

        /*
         * Adjust local variables to match self->curFrame and the
         * updated PC.
         */
        //fp = (u4*) self->curFrame;
        curMethod = SAVEAREA_FROM_FP(fp)->method;
        //methodClass = curMethod->clazz;
        methodClassDex = curMethod->clazz->pDvmDex;
        pc = curMethod->insns + catchRelPc;
        ILOGV("> pc <-- %s.%s %s", curMethod->clazz->descriptor,
            curMethod->name, curMethod->shorty);
        DUMP_REGS(curMethod, fp, false);            // show all regs

        /*
         * Restore the exception if the handler wants it.
         *
         * The Dalvik spec mandates that, if an exception handler wants to
         * do something with the exception, the first instruction executed
         * must be "move-exception".  We can pass the exception along
         * through the thread struct, and let the move-exception instruction
         * clear it for us.
         *
         * If the handler doesn't call move-exception, we don't want to
         * finish here with an exception still pending.
         */
        if (INST_INST(FETCH(0)) == OP_MOVE_EXCEPTION)
            dvmSetException(self, exception);

        dvmReleaseTrackedAlloc(exception, self);
        FINISH(0);
    }
GOTO_TARGET_END


    /*
     * General handling for invoke-{virtual,super,direct,static,interface},
     * including "quick" variants.
     *
     * Set "methodToCall" to the Method we're calling, and "methodCallRange"
     * depending on whether this is a "/range" instruction.
     *
     * For a range call:
     *  "vsrc1" holds the argument count (8 bits)
     *  "vdst" holds the first argument in the range
     * For a non-range call:
     *  "vsrc1" holds the argument count (4 bits) and the 5th argument index
     *  "vdst" holds four 4-bit register indices
     *
     * The caller must EXPORT_PC before jumping here, because any method
     * call can throw a stack overflow exception.
     */
GOTO_TARGET(invokeMethod, bool methodCallRange, const Method* _methodToCall,
    u2 count, u2 regs)
    {
        STUB_HACK(vsrc1 = count; vdst = regs; methodToCall = _methodToCall;);

        //printf("range=%d call=%p count=%d regs=0x%04x\n",
        //    methodCallRange, methodToCall, count, regs);
        //printf(" --> %s.%s %s\n", methodToCall->clazz->descriptor,
        //    methodToCall->name, methodToCall->shorty);

        u4* outs;
        int i;

        /*
         * Copy args.  This may corrupt vsrc1/vdst.
         */
        if (methodCallRange) {
            // could use memcpy or a "Duff's device"; most functions have
            // so few args it won't matter much
            assert(vsrc1 <= curMethod->outsSize);
            assert(vsrc1 == methodToCall->insSize);
            outs = OUTS_FROM_FP(fp, vsrc1);
            for (i = 0; i < vsrc1; i++)
                outs[i] = GET_REGISTER(vdst+i);
        } else {
            u4 count = vsrc1 >> 4;

            assert(count <= curMethod->outsSize);
            assert(count == methodToCall->insSize);
            assert(count <= 5);

            outs = OUTS_FROM_FP(fp, count);
#if 0
            if (count == 5) {
                outs[4] = GET_REGISTER(vsrc1 & 0x0f);
                count--;
            }
            for (i = 0; i < (int) count; i++) {
                outs[i] = GET_REGISTER(vdst & 0x0f);
                vdst >>= 4;
            }
#else
            // This version executes fewer instructions but is larger
            // overall.  Seems to be a teensy bit faster.
            assert((vdst >> 16) == 0);  // 16 bits -or- high 16 bits clear
            switch (count) {
            case 5:
                outs[4] = GET_REGISTER(vsrc1 & 0x0f);
            case 4:
                outs[3] = GET_REGISTER(vdst >> 12);
            case 3:
                outs[2] = GET_REGISTER((vdst & 0x0f00) >> 8);
            case 2:
                outs[1] = GET_REGISTER((vdst & 0x00f0) >> 4);
            case 1:
                outs[0] = GET_REGISTER(vdst & 0x0f);
            default:
                ;
            }
#endif
        }
    }

    /*
     * (This was originally a "goto" target; I've kept it separate from the
     * stuff above in case we want to refactor things again.)
     *
     * At this point, we have the arguments stored in the "outs" area of
     * the current method's stack frame, and the method to call in
     * "methodToCall".  Push a new stack frame.
     */
    {
        StackSaveArea* newSaveArea;
        u4* newFp;

        ILOGV("> %s%s.%s %s",
            dvmIsNativeMethod(methodToCall) ? "(NATIVE) " : "",
            methodToCall->clazz->descriptor, methodToCall->name,
            methodToCall->shorty);

        newFp = (u4*) SAVEAREA_FROM_FP(fp) - methodToCall->registersSize;
        newSaveArea = SAVEAREA_FROM_FP(newFp);

        /* verify that we have enough space */
        if (true) {
            u1* bottom;
            bottom = (u1*) newSaveArea - methodToCall->outsSize * sizeof(u4);
            if (bottom < self->interpStackEnd) {
                /* stack overflow */
                LOGV("Stack overflow on method call (start=%p end=%p newBot=%p(%d) size=%d '%s')\n",
                    self->interpStackStart, self->interpStackEnd, bottom,
                    (u1*) fp - bottom, self->interpStackSize,
                    methodToCall->name);
                dvmHandleStackOverflow(self, methodToCall);
                assert(dvmCheckException(self));
                GOTO_exceptionThrown();
            }
            //LOGD("+++ fp=%p newFp=%p newSave=%p bottom=%p\n",
            //    fp, newFp, newSaveArea, bottom);
        }

#ifdef LOG_INSTR
        if (methodToCall->registersSize > methodToCall->insSize) {
            /*
             * This makes valgrind quiet when we print registers that
             * haven't been initialized.  Turn it off when the debug
             * messages are disabled -- we want valgrind to report any
             * used-before-initialized issues.
             */
            memset(newFp, 0xcc,
                (methodToCall->registersSize - methodToCall->insSize) * 4);
        }
#endif

#ifdef EASY_GDB
        newSaveArea->prevSave = SAVEAREA_FROM_FP(fp);
#endif
        newSaveArea->prevFrame = fp;
        newSaveArea->savedPc = pc;
#if defined(WITH_JIT)
        newSaveArea->returnAddr = 0;
#endif
        newSaveArea->method = methodToCall;

        if (!dvmIsNativeMethod(methodToCall)) {
            /*
             * "Call" interpreted code.  Reposition the PC, update the
             * frame pointer and other local state, and continue.
             */
            curMethod = methodToCall;
            methodClassDex = curMethod->clazz->pDvmDex;
            pc = methodToCall->insns;
            fp = self->curFrame = newFp;
#ifdef EASY_GDB
            debugSaveArea = SAVEAREA_FROM_FP(newFp);
#endif
#if INTERP_TYPE == INTERP_DBG
            debugIsMethodEntry = true;              // profiling, debugging
#endif
            ILOGD("> pc <-- %s.%s %s", curMethod->clazz->descriptor,
                curMethod->name, curMethod->shorty);
            DUMP_REGS(curMethod, fp, true);         // show input args
            FINISH(0);                              // jump to method start
        } else {
            /* set this up for JNI locals, even if not a JNI native */
#ifdef USE_INDIRECT_REF
            newSaveArea->xtra.localRefCookie = self->jniLocalRefTable.segmentState.all;
#else
            newSaveArea->xtra.localRefCookie = self->jniLocalRefTable.nextEntry;
#endif

            self->curFrame = newFp;

            DUMP_REGS(methodToCall, newFp, true);   // show input args

#if (INTERP_TYPE == INTERP_DBG) && defined(WITH_DEBUGGER)
            if (gDvm.debuggerActive) {
                dvmDbgPostLocationEvent(methodToCall, -1,
                    dvmGetThisPtr(curMethod, fp), DBG_METHOD_ENTRY);
            }
#endif
#if (INTERP_TYPE == INTERP_DBG) && defined(WITH_PROFILER)
            TRACE_METHOD_ENTER(self, methodToCall);
#endif

            ILOGD("> native <-- %s.%s %s", methodToCall->clazz->descriptor,
                methodToCall->name, methodToCall->shorty);

#if defined(WITH_JIT)
            /* Allow the Jit to end any pending trace building */
            CHECK_JIT();
#endif

            /*
             * Jump through native call bridge.  Because we leave no
             * space for locals on native calls, "newFp" points directly
             * to the method arguments.
             */
            (*methodToCall->nativeFunc)(newFp, &retval, methodToCall, self);

#if (INTERP_TYPE == INTERP_DBG) && defined(WITH_DEBUGGER)
            if (gDvm.debuggerActive) {
                dvmDbgPostLocationEvent(methodToCall, -1,
                    dvmGetThisPtr(curMethod, fp), DBG_METHOD_EXIT);
            }
#endif
#if (INTERP_TYPE == INTERP_DBG) && defined(WITH_PROFILER)
            TRACE_METHOD_EXIT(self, methodToCall);
#endif

            /* pop frame off */
            dvmPopJniLocals(self, newSaveArea);
            self->curFrame = fp;

            /*
             * If the native code threw an exception, or interpreted code
             * invoked by the native call threw one and nobody has cleared
             * it, jump to our local exception handling.
             */
            if (dvmCheckException(self)) {
                LOGV("Exception thrown by/below native code\n");
                GOTO_exceptionThrown();
            }

            ILOGD("> retval=0x%llx (leaving native)", retval.j);
            ILOGD("> (return from native %s.%s to %s.%s %s)",
                methodToCall->clazz->descriptor, methodToCall->name,
                curMethod->clazz->descriptor, curMethod->name,
                curMethod->shorty);

            //u2 invokeInstr = INST_INST(FETCH(0));
            if (true /*invokeInstr >= OP_INVOKE_VIRTUAL &&
                invokeInstr <= OP_INVOKE_INTERFACE*/)
            {
                FINISH(3);
            } else {
                //LOGE("Unknown invoke instr %02x at %d\n",
                //    invokeInstr, (int) (pc - curMethod->insns));
                assert(false);
            }
        }
    }
    assert(false);      // should not get here
GOTO_TARGET_END

/* File: cstubs/enddefs.c */

/* undefine "magic" name remapping */
#undef retval
#undef pc
#undef fp
#undef curMethod
#undef methodClassDex
#undef self
#undef debugTrackedRefStart