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// Copyright (c) 2017 Google Inc.
//
// 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.
// Validates correctness of bitwise instructions.
#include "validate.h"
#include "diagnostic.h"
#include "opcode.h"
#include "val/instruction.h"
#include "val/validation_state.h"
namespace spvtools {
namespace val {
namespace {
// Returns operand word for given instruction and operand index.
// The operand is expected to only have one word.
inline uint32_t GetOperandWord(const spv_parsed_instruction_t* inst,
size_t operand_index) {
assert(operand_index < inst->num_operands);
const spv_parsed_operand_t& operand = inst->operands[operand_index];
assert(operand.num_words == 1);
return inst->words[operand.offset];
}
// Returns the type id of instruction operand at |operand_index|.
// The operand is expected to be an id.
inline uint32_t GetOperandTypeId(ValidationState_t& _,
const spv_parsed_instruction_t* inst,
size_t operand_index) {
return _.GetTypeId(GetOperandWord(inst, operand_index));
}
} // namespace
// Validates correctness of bitwise instructions.
spv_result_t BitwisePass(ValidationState_t& _,
const spv_parsed_instruction_t* inst) {
const SpvOp opcode = static_cast<SpvOp>(inst->opcode);
const uint32_t result_type = inst->type_id;
switch (opcode) {
case SpvOpShiftRightLogical:
case SpvOpShiftRightArithmetic:
case SpvOpShiftLeftLogical: {
if (!_.IsIntScalarType(result_type) && !_.IsIntVectorType(result_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected int scalar or vector type as Result Type: "
<< spvOpcodeString(opcode);
const uint32_t result_dimension = _.GetDimension(result_type);
const uint32_t base_type = GetOperandTypeId(_, inst, 2);
const uint32_t shift_type = GetOperandTypeId(_, inst, 3);
if (!base_type ||
(!_.IsIntScalarType(base_type) && !_.IsIntVectorType(base_type)))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base to be int scalar or vector: "
<< spvOpcodeString(opcode);
if (_.GetDimension(base_type) != result_dimension)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base to have the same dimension "
<< "as Result Type: " << spvOpcodeString(opcode);
if (_.GetBitWidth(base_type) != _.GetBitWidth(result_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base to have the same bit width "
<< "as Result Type: " << spvOpcodeString(opcode);
if (!shift_type ||
(!_.IsIntScalarType(shift_type) && !_.IsIntVectorType(shift_type)))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Shift to be int scalar or vector: "
<< spvOpcodeString(opcode);
if (_.GetDimension(shift_type) != result_dimension)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Shift to have the same dimension "
<< "as Result Type: " << spvOpcodeString(opcode);
break;
}
case SpvOpBitwiseOr:
case SpvOpBitwiseXor:
case SpvOpBitwiseAnd:
case SpvOpNot: {
if (!_.IsIntScalarType(result_type) && !_.IsIntVectorType(result_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected int scalar or vector type as Result Type: "
<< spvOpcodeString(opcode);
const uint32_t result_dimension = _.GetDimension(result_type);
const uint32_t result_bit_width = _.GetBitWidth(result_type);
for (size_t operand_index = 2; operand_index < inst->num_operands;
++operand_index) {
const uint32_t type_id = GetOperandTypeId(_, inst, operand_index);
if (!type_id ||
(!_.IsIntScalarType(type_id) && !_.IsIntVectorType(type_id)))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected int scalar or vector as operand: "
<< spvOpcodeString(opcode) << " operand index "
<< operand_index;
if (_.GetDimension(type_id) != result_dimension)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected operands to have the same dimension "
<< "as Result Type: " << spvOpcodeString(opcode)
<< " operand index " << operand_index;
if (_.GetBitWidth(type_id) != result_bit_width)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected operands to have the same bit width "
<< "as Result Type: " << spvOpcodeString(opcode)
<< " operand index " << operand_index;
}
break;
}
case SpvOpBitFieldInsert: {
if (!_.IsIntScalarType(result_type) && !_.IsIntVectorType(result_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected int scalar or vector type as Result Type: "
<< spvOpcodeString(opcode);
const uint32_t base_type = GetOperandTypeId(_, inst, 2);
const uint32_t insert_type = GetOperandTypeId(_, inst, 3);
const uint32_t offset_type = GetOperandTypeId(_, inst, 4);
const uint32_t count_type = GetOperandTypeId(_, inst, 5);
if (base_type != result_type)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base Type to be equal to Result Type: "
<< spvOpcodeString(opcode);
if (insert_type != result_type)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Insert Type to be equal to Result Type: "
<< spvOpcodeString(opcode);
if (!offset_type || !_.IsIntScalarType(offset_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Offset Type to be int scalar: "
<< spvOpcodeString(opcode);
if (!count_type || !_.IsIntScalarType(count_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Count Type to be int scalar: "
<< spvOpcodeString(opcode);
break;
}
case SpvOpBitFieldSExtract:
case SpvOpBitFieldUExtract: {
if (!_.IsIntScalarType(result_type) && !_.IsIntVectorType(result_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected int scalar or vector type as Result Type: "
<< spvOpcodeString(opcode);
const uint32_t base_type = GetOperandTypeId(_, inst, 2);
const uint32_t offset_type = GetOperandTypeId(_, inst, 3);
const uint32_t count_type = GetOperandTypeId(_, inst, 4);
if (base_type != result_type)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base Type to be equal to Result Type: "
<< spvOpcodeString(opcode);
if (!offset_type || !_.IsIntScalarType(offset_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Offset Type to be int scalar: "
<< spvOpcodeString(opcode);
if (!count_type || !_.IsIntScalarType(count_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Count Type to be int scalar: "
<< spvOpcodeString(opcode);
break;
}
case SpvOpBitReverse: {
if (!_.IsIntScalarType(result_type) && !_.IsIntVectorType(result_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected int scalar or vector type as Result Type: "
<< spvOpcodeString(opcode);
const uint32_t base_type = GetOperandTypeId(_, inst, 2);
if (base_type != result_type)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base Type to be equal to Result Type: "
<< spvOpcodeString(opcode);
break;
}
case SpvOpBitCount: {
if (!_.IsIntScalarType(result_type) && !_.IsIntVectorType(result_type))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected int scalar or vector type as Result Type: "
<< spvOpcodeString(opcode);
const uint32_t base_type = GetOperandTypeId(_, inst, 2);
if (!base_type ||
(!_.IsIntScalarType(base_type) && !_.IsIntVectorType(base_type)))
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base Type to be int scalar or vector: "
<< spvOpcodeString(opcode);
const uint32_t base_dimension = _.GetDimension(base_type);
const uint32_t result_dimension = _.GetDimension(result_type);
if (base_dimension != result_dimension)
return _.diag(SPV_ERROR_INVALID_DATA)
<< "Expected Base dimension to be equal to Result Type "
"dimension: "
<< spvOpcodeString(opcode);
break;
}
default:
break;
}
return SPV_SUCCESS;
}
} // namespace val
} // namespace spvtools
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