/*
Perform static verification on instructions.
As a side effect, this sets the "branch target" flags in InsnFlags.
"(CF)" items are handled during code-flow analysis.
v3 4.10.1
- target of each jump and branch instruction must be valid
- targets of switch statements must be valid
- operands referencing constant pool entries must be valid
- (CF) operands of getfield, putfield, getstatic, putstatic must be valid
- (new) verify operands of "quick" field ops
- (CF) operands of method invocation instructions must be valid
- (new) verify operands of "quick" method invoke ops
- (CF) only invoke-direct can call a method starting with '<'
- (CF) <clinit> must never be called explicitly
- operands of instanceof, checkcast, new (and variants) must be valid
- new-array[-type] limited to 255 dimensions
- can't use "new" on an array class
- (?) limit dimensions in multi-array creation
- local variable load/store register values must be in valid range
v3 4.11.1.2
- branches must be within the bounds of the code array
- targets of all control-flow instructions are the start of an instruction
- register accesses fall within range of allocated registers
- (N/A) access to constant pool must be of appropriate type
- code does not end in the middle of an instruction
- execution cannot fall off the end of the code
- (earlier) for each exception handler, the "try" area must begin and
end at the start of an instruction (end can be at the end of the code)
- (earlier) for each exception handler, the handler must start at a valid
instruction
执行指令的静态检查。
*/
static bool verifyInstructions(VerifierData* vdata)
{
const Method* meth = vdata->method;
const DvmDex* pDvmDex = meth->clazz->pDvmDex;
InsnFlags* insnFlags = vdata->insnFlags;
const u2* insns = meth->insns;
unsigned int codeOffset;
/* the start of the method is a "branch target" */
/* 方法起始是一个分支目标 */
dvmInsnSetBranchTarget(insnFlags, 0, true);
for (codeOffset = 0; codeOffset < vdata->insnsSize; /**/) {
/*
Pull the instruction apart.
将指令分开。
*/
int width = dvmInsnGetWidth(insnFlags, codeOffset);
DecodedInstruction decInsn;
bool okay = true;
dexDecodeInstruction(meth->insns + codeOffset, &decInsn);
/*
Check register, type, class, field, method, and string indices
for out-of-range values. Do additional checks on branch targets
and some special cases like new-instance and new-array.
检查寄存器，类型，类，域，方法，字符串索引下标越界。
在分支目标上做额外检查和一些特殊的情况，如：new-instance 和 new-array。
*/
switch (decInsn.opcode) {
case OP_NOP:
case OP_RETURN_VOID:
/* nothing to check */
/* 不做任何检查 */
break;
case OP_MOVE_RESULT:
case OP_MOVE_RESULT_OBJECT:
case OP_MOVE_EXCEPTION:
case OP_RETURN:
case OP_RETURN_OBJECT:
case OP_CONST_4:
case OP_CONST_16:
case OP_CONST:
case OP_CONST_HIGH16:
case OP_MONITOR_ENTER:
case OP_MONITOR_EXIT:
case OP_THROW:
okay &= checkRegisterIndex(meth, decInsn.vA);
break;
case OP_MOVE_RESULT_WIDE:
case OP_RETURN_WIDE:
case OP_CONST_WIDE_16:
case OP_CONST_WIDE_32:
case OP_CONST_WIDE:
case OP_CONST_WIDE_HIGH16:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
break;
case OP_GOTO:
case OP_GOTO_16:
okay &= checkBranchTarget(meth, insnFlags, codeOffset, false);
break;
case OP_GOTO_32:
okay &= checkBranchTarget(meth, insnFlags, codeOffset, true);
break;
case OP_MOVE:
case OP_MOVE_FROM16:
case OP_MOVE_16:
case OP_MOVE_OBJECT:
case OP_MOVE_OBJECT_FROM16:
case OP_MOVE_OBJECT_16:
case OP_ARRAY_LENGTH:
case OP_NEG_INT:
case OP_NOT_INT:
case OP_NEG_FLOAT:
case OP_INT_TO_FLOAT:
case OP_FLOAT_TO_INT:
case OP_INT_TO_BYTE:
case OP_INT_TO_CHAR:
case OP_INT_TO_SHORT:
case OP_ADD_INT_2ADDR:
case OP_SUB_INT_2ADDR:
case OP_MUL_INT_2ADDR:
case OP_DIV_INT_2ADDR:
case OP_REM_INT_2ADDR:
case OP_AND_INT_2ADDR:
case OP_OR_INT_2ADDR:
case OP_XOR_INT_2ADDR:
case OP_SHL_INT_2ADDR:
case OP_SHR_INT_2ADDR:
case OP_USHR_INT_2ADDR:
case OP_ADD_FLOAT_2ADDR:
case OP_SUB_FLOAT_2ADDR:
case OP_MUL_FLOAT_2ADDR:
case OP_DIV_FLOAT_2ADDR:
case OP_REM_FLOAT_2ADDR:
case OP_ADD_INT_LIT16:
case OP_RSUB_INT:
case OP_MUL_INT_LIT16:
case OP_DIV_INT_LIT16:
case OP_REM_INT_LIT16:
case OP_AND_INT_LIT16:
case OP_OR_INT_LIT16:
case OP_XOR_INT_LIT16:
case OP_ADD_INT_LIT8:
case OP_RSUB_INT_LIT8:
case OP_MUL_INT_LIT8:
case OP_DIV_INT_LIT8:
case OP_REM_INT_LIT8:
case OP_AND_INT_LIT8:
case OP_OR_INT_LIT8:
case OP_XOR_INT_LIT8:
case OP_SHL_INT_LIT8:
case OP_SHR_INT_LIT8:
case OP_USHR_INT_LIT8:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
break;
case OP_INT_TO_LONG:
case OP_INT_TO_DOUBLE:
case OP_FLOAT_TO_LONG:
case OP_FLOAT_TO_DOUBLE:
case OP_SHL_LONG_2ADDR:
case OP_SHR_LONG_2ADDR:
case OP_USHR_LONG_2ADDR:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
break;
case OP_LONG_TO_INT:
case OP_LONG_TO_FLOAT:
case OP_DOUBLE_TO_INT:
case OP_DOUBLE_TO_FLOAT:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkWideRegisterIndex(meth, decInsn.vB);
break;
case OP_MOVE_WIDE:
case OP_MOVE_WIDE_FROM16:
case OP_MOVE_WIDE_16:
case OP_DOUBLE_TO_LONG:
case OP_LONG_TO_DOUBLE:
case OP_NEG_DOUBLE:
case OP_NEG_LONG:
case OP_NOT_LONG:
case OP_ADD_LONG_2ADDR:
case OP_SUB_LONG_2ADDR:
case OP_MUL_LONG_2ADDR:
case OP_DIV_LONG_2ADDR:
case OP_REM_LONG_2ADDR:
case OP_AND_LONG_2ADDR:
case OP_OR_LONG_2ADDR:
case OP_XOR_LONG_2ADDR:
case OP_ADD_DOUBLE_2ADDR:
case OP_SUB_DOUBLE_2ADDR:
case OP_MUL_DOUBLE_2ADDR:
case OP_DIV_DOUBLE_2ADDR:
case OP_REM_DOUBLE_2ADDR:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
okay &= checkWideRegisterIndex(meth, decInsn.vB);
break;
case OP_CONST_STRING:
case OP_CONST_STRING_JUMBO:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkStringIndex(pDvmDex, decInsn.vB);
break;
case OP_CONST_CLASS:
case OP_CHECK_CAST:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkTypeIndex(pDvmDex, decInsn.vB);
break;
case OP_INSTANCE_OF:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
okay &= checkTypeIndex(pDvmDex, decInsn.vC);
break;
case OP_NEW_INSTANCE:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkNewInstance(pDvmDex, decInsn.vB);
break;
case OP_NEW_ARRAY:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
okay &= checkNewArray(pDvmDex, decInsn.vC);
break;
case OP_FILL_ARRAY_DATA:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkArrayData(meth, codeOffset);
break;
case OP_PACKED_SWITCH:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkSwitchTargets(meth, insnFlags, codeOffset);
break;
case OP_SPARSE_SWITCH:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkSwitchTargets(meth, insnFlags, codeOffset);
break;
case OP_CMPL_FLOAT:
case OP_CMPG_FLOAT:
case OP_AGET:
case OP_AGET_OBJECT:
case OP_AGET_BOOLEAN:
case OP_AGET_BYTE:
case OP_AGET_CHAR:
case OP_AGET_SHORT:
case OP_APUT:
case OP_APUT_OBJECT:
case OP_APUT_BOOLEAN:
case OP_APUT_BYTE:
case OP_APUT_CHAR:
case OP_APUT_SHORT:
case OP_ADD_INT:
case OP_SUB_INT:
case OP_MUL_INT:
case OP_DIV_INT:
case OP_REM_INT:
case OP_AND_INT:
case OP_OR_INT:
case OP_XOR_INT:
case OP_SHL_INT:
case OP_SHR_INT:
case OP_USHR_INT:
case OP_ADD_FLOAT:
case OP_SUB_FLOAT:
case OP_MUL_FLOAT:
case OP_DIV_FLOAT:
case OP_REM_FLOAT:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
okay &= checkRegisterIndex(meth, decInsn.vC);
break;
case OP_AGET_WIDE:
case OP_APUT_WIDE:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
okay &= checkRegisterIndex(meth, decInsn.vC);
break;
case OP_CMPL_DOUBLE:
case OP_CMPG_DOUBLE:
case OP_CMP_LONG:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkWideRegisterIndex(meth, decInsn.vB);
okay &= checkWideRegisterIndex(meth, decInsn.vC);
break;
case OP_ADD_DOUBLE:
case OP_SUB_DOUBLE:
case OP_MUL_DOUBLE:
case OP_DIV_DOUBLE:
case OP_REM_DOUBLE:
case OP_ADD_LONG:
case OP_SUB_LONG:
case OP_MUL_LONG:
case OP_DIV_LONG:
case OP_REM_LONG:
case OP_AND_LONG:
case OP_OR_LONG:
case OP_XOR_LONG:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
okay &= checkWideRegisterIndex(meth, decInsn.vB);
okay &= checkWideRegisterIndex(meth, decInsn.vC);
break;
case OP_SHL_LONG:
case OP_SHR_LONG:
case OP_USHR_LONG:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
okay &= checkWideRegisterIndex(meth, decInsn.vB);
okay &= checkRegisterIndex(meth, decInsn.vC);
break;
case OP_IF_EQ:
case OP_IF_NE:
case OP_IF_LT:
case OP_IF_GE:
case OP_IF_GT:
case OP_IF_LE:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
okay &= checkBranchTarget(meth, insnFlags, codeOffset, false);
break;
case OP_IF_EQZ:
case OP_IF_NEZ:
case OP_IF_LTZ:
case OP_IF_GEZ:
case OP_IF_GTZ:
case OP_IF_LEZ:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkBranchTarget(meth, insnFlags, codeOffset, false);
break;
case OP_IGET:
case OP_IGET_OBJECT:
case OP_IGET_BOOLEAN:
case OP_IGET_BYTE:
case OP_IGET_CHAR:
case OP_IGET_SHORT:
case OP_IPUT:
case OP_IPUT_OBJECT:
case OP_IPUT_BOOLEAN:
case OP_IPUT_BYTE:
case OP_IPUT_CHAR:
case OP_IPUT_SHORT:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
okay &= checkFieldIndex(pDvmDex, decInsn.vC);
break;
case OP_IGET_WIDE:
case OP_IPUT_WIDE:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
okay &= checkRegisterIndex(meth, decInsn.vB);
okay &= checkFieldIndex(pDvmDex, decInsn.vC);
break;
case OP_SGET:
case OP_SGET_OBJECT:
case OP_SGET_BOOLEAN:
case OP_SGET_BYTE:
case OP_SGET_CHAR:
case OP_SGET_SHORT:
case OP_SPUT:
case OP_SPUT_OBJECT:
case OP_SPUT_BOOLEAN:
case OP_SPUT_BYTE:
case OP_SPUT_CHAR:
case OP_SPUT_SHORT:
okay &= checkRegisterIndex(meth, decInsn.vA);
okay &= checkFieldIndex(pDvmDex, decInsn.vB);
break;
case OP_SGET_WIDE:
case OP_SPUT_WIDE:
okay &= checkWideRegisterIndex(meth, decInsn.vA);
okay &= checkFieldIndex(pDvmDex, decInsn.vB);
break;
case OP_FILLED_NEW_ARRAY:
/* decoder uses B, not C, for type ref */
okay &= checkTypeIndex(pDvmDex, decInsn.vB);
okay &= checkVarargRegs(meth, &decInsn);
break;
case OP_FILLED_NEW_ARRAY_RANGE:
okay &= checkTypeIndex(pDvmDex, decInsn.vB);
okay &= checkVarargRangeRegs(meth, &decInsn);
break;
case OP_INVOKE_VIRTUAL:
case OP_INVOKE_SUPER:
case OP_INVOKE_DIRECT:
case OP_INVOKE_STATIC:
case OP_INVOKE_INTERFACE:
/* decoder uses B, not C, for type ref */
okay &= checkMethodIndex(pDvmDex, decInsn.vB);
okay &= checkVarargRegs(meth, &decInsn);
break;
case OP_INVOKE_VIRTUAL_RANGE:
case OP_INVOKE_SUPER_RANGE:
case OP_INVOKE_DIRECT_RANGE:
case OP_INVOKE_STATIC_RANGE:
case OP_INVOKE_INTERFACE_RANGE:
okay &= checkMethodIndex(pDvmDex, decInsn.vB);
okay &= checkVarargRangeRegs(meth, &decInsn);
break;
/* verifier/optimizer output; we should never see these */
case OP_IGET_VOLATILE:
case OP_IPUT_VOLATILE:
case OP_SGET_VOLATILE:
case OP_SPUT_VOLATILE:
case OP_IGET_OBJECT_VOLATILE:
case OP_IPUT_OBJECT_VOLATILE:
case OP_SGET_OBJECT_VOLATILE:
case OP_SPUT_OBJECT_VOLATILE:
case OP_IGET_WIDE_VOLATILE:
case OP_IPUT_WIDE_VOLATILE:
case OP_SGET_WIDE_VOLATILE:
case OP_SPUT_WIDE_VOLATILE:
case OP_BREAKPOINT:
case OP_THROW_VERIFICATION_ERROR:
case OP_EXECUTE_INLINE:
case OP_EXECUTE_INLINE_RANGE:
case OP_INVOKE_OBJECT_INIT_RANGE:
case OP_RETURN_VOID_BARRIER:
case OP_IGET_QUICK:
case OP_IGET_WIDE_QUICK:
case OP_IGET_OBJECT_QUICK:
case OP_IPUT_QUICK:
case OP_IPUT_WIDE_QUICK:
case OP_IPUT_OBJECT_QUICK:
case OP_INVOKE_VIRTUAL_QUICK:
case OP_INVOKE_VIRTUAL_QUICK_RANGE:
case OP_INVOKE_SUPER_QUICK:
case OP_INVOKE_SUPER_QUICK_RANGE:
case OP_UNUSED_3E:
case OP_UNUSED_3F:
case OP_UNUSED_40:
case OP_UNUSED_41:
case OP_UNUSED_42:
case OP_UNUSED_43:
case OP_UNUSED_73:
case OP_UNUSED_79:
case OP_UNUSED_7A:
case OP_UNUSED_FF:
ALOGE("VFY: unexpected opcode %04x", decInsn.opcode);
okay = false;
break;
/*
* DO NOT add a "default" clause here. Without it the compiler will
* complain if an instruction is missing (which is desirable).
*/
}
if (!okay) {
LOG_VFY_METH(meth, "VFY: rejecting opcode 0x%02x at 0x%04x",
decInsn.opcode, codeOffset);
return false;
}
OpcodeFlags opFlags = dexGetFlagsFromOpcode(decInsn.opcode);
if ((opFlags & VERIFY_GC_INST_MASK) != 0) {
/*
* This instruction is a GC point. If space is a concern,
* the set of GC points could be reduced by eliminating
* foward branches.
*
* TODO: we could also scan the targets of a "switch" statement,
* and if none of them branch backward we could ignore that
* instruction as well.
*/
dvmInsnSetGcPoint(insnFlags, codeOffset, true);
}
assert(width > 0);
codeOffset += width;
insns += width;
}
/* make sure the last instruction ends at the end of the insn area */
if (codeOffset != vdata->insnsSize) {
LOG_VFY_METH(meth,
"VFY: code did not end when expected (end at %d, count %d)",
codeOffset, vdata->insnsSize);
return false;
}
return true;
}
/*
* Perform static verification on instructions.
*
* As a side effect, this sets the "branch target" flags in InsnFlags.
*
* "(CF)" items are handled during code-flow analysis.
*
* v3 4.10.1
* - target of each jump and branch instruction must be valid
* - targets of switch statements must be valid
* - (CF) operands referencing constant pool entries must be valid
* - (CF) operands of getfield, putfield, getstatic, putstatic must be valid
* - (new) verify operands of "quick" field ops
* - (CF) operands of method invocation instructions must be valid
* - (new) verify operands of "quick" method invoke ops
* - (CF) only invoke-direct can call a method starting with '<'
* - (CF) <clinit> must never be called explicitly
* - (CF) operands of instanceof, checkcast, new (and variants) must be valid
* - new-array[-type] limited to 255 dimensions
* - can't use "new" on an array class
* - (?) limit dimensions in multi-array creation
* - (CF) local variable load/store register values must be in valid range
*
* v3 4.11.1.2
* - branches must be within the bounds of the code array
* - targets of all control-flow instructions are the start of an instruction
* - (CF) register accesses fall within range of allocated registers
* - (N/A) access to constant pool must be of appropriate type
* - (CF) code does not end in the middle of an instruction
* - (CF) execution cannot fall off the end of the code
* - (earlier) for each exception handler, the "try" area must begin and
* end at the start of an instruction (end can be at the end of the code)
* - (earlier) for each exception handler, the handler must start at a valid
* instruction
*
* TODO: move some of the "CF" items in here for better performance (the
* code-flow analysis sometimes has to process the same instruction several
* times).
*/
static bool verifyInstructions(const Method* meth, InsnFlags* insnFlags,
int verifyFlags)
{
const int insnCount = dvmGetMethodInsnsSize(meth);
const u2* insns = meth->insns;
int i;
/* the start of the method is a "branch target" */
dvmInsnSetBranchTarget(insnFlags, 0, true);
for (i = 0; i < insnCount; /**/) {
/*
* These types of instructions can be GC points. To support precise
* GC, all such instructions must export the PC in the interpreter,
* or the GC won't be able to identify the current PC for the thread.
*/
static const int gcMask = kInstrCanBranch | kInstrCanSwitch |
kInstrCanThrow | kInstrCanReturn;
int width = dvmInsnGetWidth(insnFlags, i);
OpCode opcode = *insns & 0xff;
InstructionFlags opFlags = dexGetInstrFlags(gDvm.instrFlags, opcode);
int offset, absOffset;
if ((opFlags & gcMask) != 0) {
/*
* This instruction is probably a GC point. Branch instructions
* only qualify if they go backward, so we need to check the
* offset.
*/
int offset = -1;
bool unused;
if (dvmGetBranchTarget(meth, insnFlags, i, &offset, &unused)) {
if (offset < 0) {
dvmInsnSetGcPoint(insnFlags, i, true);
}
} else {
/* not a branch target */
dvmInsnSetGcPoint(insnFlags, i, true);
}
}
switch (opcode) {
case OP_NOP:
/* plain no-op or switch table data; nothing to do here */
break;
case OP_CONST_STRING:
case OP_CONST_STRING_JUMBO:
if (!checkStringIndex(meth, i))
return false;
break;
case OP_CONST_CLASS:
case OP_CHECK_CAST:
if (!checkTypeIndex(meth, i, true))
return false;
break;
case OP_INSTANCE_OF:
if (!checkTypeIndex(meth, i, false))
return false;
break;
case OP_PACKED_SWITCH:
case OP_SPARSE_SWITCH:
/* verify the associated table */
if (!dvmCheckSwitchTargets(meth, insnFlags, i))
return false;
break;
case OP_FILL_ARRAY_DATA:
/* verify the associated table */
if (!checkArrayData(meth, i))
return false;
break;
case OP_GOTO:
case OP_GOTO_16:
case OP_IF_EQ:
case OP_IF_NE:
case OP_IF_LT:
case OP_IF_GE:
case OP_IF_GT:
case OP_IF_LE:
case OP_IF_EQZ:
case OP_IF_NEZ:
case OP_IF_LTZ:
case OP_IF_GEZ:
case OP_IF_GTZ:
case OP_IF_LEZ:
/* check the destination */
if (!dvmCheckBranchTarget(meth, insnFlags, i, false))
return false;
break;
case OP_GOTO_32:
/* check the destination; self-branch is okay */
if (!dvmCheckBranchTarget(meth, insnFlags, i, true))
return false;
break;
case OP_NEW_INSTANCE:
if (!checkNewInstance(meth, i))
return false;
break;
case OP_NEW_ARRAY:
if (!checkNewArray(meth, i))
return false;
break;
case OP_FILLED_NEW_ARRAY:
if (!checkTypeIndex(meth, i, true))
return false;
break;
case OP_FILLED_NEW_ARRAY_RANGE:
if (!checkTypeIndex(meth, i, true))
return false;
break;
case OP_IGET:
case OP_IGET_WIDE:
case OP_IGET_OBJECT:
case OP_IGET_BOOLEAN:
case OP_IGET_BYTE:
case OP_IGET_CHAR:
case OP_IGET_SHORT:
case OP_IPUT:
case OP_IPUT_WIDE:
case OP_IPUT_OBJECT:
case OP_IPUT_BOOLEAN:
case OP_IPUT_BYTE:
case OP_IPUT_CHAR:
case OP_IPUT_SHORT:
/* check the field index */
if (!checkFieldIndex(meth, i, false))
return false;
break;
case OP_SGET:
case OP_SGET_WIDE:
case OP_SGET_OBJECT:
case OP_SGET_BOOLEAN:
case OP_SGET_BYTE:
case OP_SGET_CHAR:
case OP_SGET_SHORT:
case OP_SPUT:
case OP_SPUT_WIDE:
case OP_SPUT_OBJECT:
case OP_SPUT_BOOLEAN:
case OP_SPUT_BYTE:
case OP_SPUT_CHAR:
case OP_SPUT_SHORT:
/* check the field index */
if (!checkFieldIndex(meth, i, true))
return false;
break;
case OP_INVOKE_VIRTUAL:
case OP_INVOKE_SUPER:
case OP_INVOKE_DIRECT:
case OP_INVOKE_STATIC:
case OP_INVOKE_INTERFACE:
case OP_INVOKE_VIRTUAL_RANGE:
case OP_INVOKE_SUPER_RANGE:
case OP_INVOKE_DIRECT_RANGE:
case OP_INVOKE_STATIC_RANGE:
case OP_INVOKE_INTERFACE_RANGE:
/* check the method index */
if (!checkMethodIndex(meth, i))
return false;
break;
case OP_EXECUTE_INLINE:
case OP_INVOKE_DIRECT_EMPTY:
case OP_IGET_QUICK:
case OP_IGET_WIDE_QUICK:
case OP_IGET_OBJECT_QUICK:
case OP_IPUT_QUICK:
case OP_IPUT_WIDE_QUICK:
case OP_IPUT_OBJECT_QUICK:
case OP_INVOKE_VIRTUAL_QUICK:
case OP_INVOKE_VIRTUAL_QUICK_RANGE:
case OP_INVOKE_SUPER_QUICK:
case OP_INVOKE_SUPER_QUICK_RANGE:
if ((verifyFlags & VERIFY_ALLOW_OPT_INSTRS) == 0) {
LOG_VFY("VFY: not expecting optimized instructions\n");
return false;
}
break;
default:
/* nothing to do */
break;
}
assert(width > 0);
i += width;
insns += width;
}
/* make sure the last instruction ends at the end of the insn area */
if (i != insnCount) {
LOG_VFY_METH(meth,
"VFY: code did not end when expected (end at %d, count %d)\n",
i, insnCount);
return false;
}
return true;
}
