| // Copyright (c) 2018 Google LLC. |
| // |
| // 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. |
| |
| #include "source/val/validate.h" |
| |
| #include "source/opcode.h" |
| #include "source/val/instruction.h" |
| #include "source/val/validation_state.h" |
| |
| namespace spvtools { |
| namespace val { |
| namespace { |
| |
| spv_result_t ValidateDecorate(ValidationState_t& _, const Instruction* inst) { |
| const auto decoration = inst->GetOperandAs<uint32_t>(1); |
| if (decoration == SpvDecorationSpecId) { |
| const auto target_id = inst->GetOperandAs<uint32_t>(0); |
| const auto target = _.FindDef(target_id); |
| if (!target || !spvOpcodeIsScalarSpecConstant(target->opcode())) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "OpDecorate SpecId decoration target <id> '" |
| << _.getIdName(decoration) |
| << "' is not a scalar specialization constant."; |
| } |
| } |
| // TODO: Add validations for all decorations. |
| return SPV_SUCCESS; |
| } |
| |
| spv_result_t ValidateMemberDecorate(ValidationState_t& _, |
| const Instruction* inst) { |
| const auto struct_type_id = inst->GetOperandAs<uint32_t>(0); |
| const auto struct_type = _.FindDef(struct_type_id); |
| if (!struct_type || SpvOpTypeStruct != struct_type->opcode()) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "OpMemberDecorate Structure type <id> '" |
| << _.getIdName(struct_type_id) << "' is not a struct type."; |
| } |
| const auto member = inst->GetOperandAs<uint32_t>(1); |
| const auto member_count = |
| static_cast<uint32_t>(struct_type->words().size() - 2); |
| if (member_count <= member) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "Index " << member |
| << " provided in OpMemberDecorate for struct <id> " |
| << _.getIdName(struct_type_id) |
| << " is out of bounds. The structure has " << member_count |
| << " members. Largest valid index is " << member_count - 1 << "."; |
| } |
| return SPV_SUCCESS; |
| } |
| |
| spv_result_t ValidateDecorationGroup(ValidationState_t& _, |
| const Instruction* inst) { |
| const auto decoration_group_id = inst->GetOperandAs<uint32_t>(0); |
| const auto decoration_group = _.FindDef(decoration_group_id); |
| for (auto pair : decoration_group->uses()) { |
| auto use = pair.first; |
| if (use->opcode() != SpvOpDecorate && use->opcode() != SpvOpGroupDecorate && |
| use->opcode() != SpvOpGroupMemberDecorate && |
| use->opcode() != SpvOpName) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "Result id of OpDecorationGroup can only " |
| << "be targeted by OpName, OpGroupDecorate, " |
| << "OpDecorate, and OpGroupMemberDecorate"; |
| } |
| } |
| return SPV_SUCCESS; |
| } |
| |
| spv_result_t ValidateGroupDecorate(ValidationState_t& _, |
| const Instruction* inst) { |
| const auto decoration_group_id = inst->GetOperandAs<uint32_t>(0); |
| auto decoration_group = _.FindDef(decoration_group_id); |
| if (!decoration_group || SpvOpDecorationGroup != decoration_group->opcode()) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "OpGroupDecorate Decoration group <id> '" |
| << _.getIdName(decoration_group_id) |
| << "' is not a decoration group."; |
| } |
| for (unsigned i = 1; i < inst->operands().size(); ++i) { |
| auto target_id = inst->GetOperandAs<uint32_t>(i); |
| auto target = _.FindDef(target_id); |
| if (!target || target->opcode() == SpvOpDecorationGroup) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "OpGroupDecorate may not target OpDecorationGroup <id> '" |
| << _.getIdName(target_id) << "'"; |
| } |
| } |
| return SPV_SUCCESS; |
| } |
| |
| spv_result_t ValidateGroupMemberDecorate(ValidationState_t& _, |
| const Instruction* inst) { |
| const auto decoration_group_id = inst->GetOperandAs<uint32_t>(0); |
| const auto decoration_group = _.FindDef(decoration_group_id); |
| if (!decoration_group || SpvOpDecorationGroup != decoration_group->opcode()) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "OpGroupMemberDecorate Decoration group <id> '" |
| << _.getIdName(decoration_group_id) |
| << "' is not a decoration group."; |
| } |
| // Grammar checks ensures that the number of arguments to this instruction |
| // is an odd number: 1 decoration group + (id,literal) pairs. |
| for (size_t i = 1; i + 1 < inst->operands().size(); i += 2) { |
| const uint32_t struct_id = inst->GetOperandAs<uint32_t>(i); |
| const uint32_t index = inst->GetOperandAs<uint32_t>(i + 1); |
| auto struct_instr = _.FindDef(struct_id); |
| if (!struct_instr || SpvOpTypeStruct != struct_instr->opcode()) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "OpGroupMemberDecorate Structure type <id> '" |
| << _.getIdName(struct_id) << "' is not a struct type."; |
| } |
| const uint32_t num_struct_members = |
| static_cast<uint32_t>(struct_instr->words().size() - 2); |
| if (index >= num_struct_members) { |
| return _.diag(SPV_ERROR_INVALID_ID, inst) |
| << "Index " << index |
| << " provided in OpGroupMemberDecorate for struct <id> " |
| << _.getIdName(struct_id) |
| << " is out of bounds. The structure has " << num_struct_members |
| << " members. Largest valid index is " << num_struct_members - 1 |
| << "."; |
| } |
| } |
| return SPV_SUCCESS; |
| } |
| |
| // Registers necessary decoration(s) for the appropriate IDs based on the |
| // instruction. |
| spv_result_t RegisterDecorations(ValidationState_t& _, |
| const Instruction* inst) { |
| switch (inst->opcode()) { |
| case SpvOpDecorate: { |
| const uint32_t target_id = inst->word(1); |
| const SpvDecoration dec_type = static_cast<SpvDecoration>(inst->word(2)); |
| std::vector<uint32_t> dec_params; |
| if (inst->words().size() > 3) { |
| dec_params.insert(dec_params.end(), inst->words().begin() + 3, |
| inst->words().end()); |
| } |
| _.RegisterDecorationForId(target_id, Decoration(dec_type, dec_params)); |
| break; |
| } |
| case SpvOpMemberDecorate: { |
| const uint32_t struct_id = inst->word(1); |
| const uint32_t index = inst->word(2); |
| const SpvDecoration dec_type = static_cast<SpvDecoration>(inst->word(3)); |
| std::vector<uint32_t> dec_params; |
| if (inst->words().size() > 4) { |
| dec_params.insert(dec_params.end(), inst->words().begin() + 4, |
| inst->words().end()); |
| } |
| _.RegisterDecorationForId(struct_id, |
| Decoration(dec_type, dec_params, index)); |
| break; |
| } |
| case SpvOpDecorationGroup: { |
| // We don't need to do anything right now. Assigning decorations to groups |
| // will be taken care of via OpGroupDecorate. |
| break; |
| } |
| case SpvOpGroupDecorate: { |
| // Word 1 is the group <id>. All subsequent words are target <id>s that |
| // are going to be decorated with the decorations. |
| const uint32_t decoration_group_id = inst->word(1); |
| std::vector<Decoration>& group_decorations = |
| _.id_decorations(decoration_group_id); |
| for (size_t i = 2; i < inst->words().size(); ++i) { |
| const uint32_t target_id = inst->word(i); |
| _.RegisterDecorationsForId(target_id, group_decorations.begin(), |
| group_decorations.end()); |
| } |
| break; |
| } |
| case SpvOpGroupMemberDecorate: { |
| // Word 1 is the Decoration Group <id> followed by (struct<id>,literal) |
| // pairs. All decorations of the group should be applied to all the struct |
| // members that are specified in the instructions. |
| const uint32_t decoration_group_id = inst->word(1); |
| std::vector<Decoration>& group_decorations = |
| _.id_decorations(decoration_group_id); |
| // Grammar checks ensures that the number of arguments to this instruction |
| // is an odd number: 1 decoration group + (id,literal) pairs. |
| for (size_t i = 2; i + 1 < inst->words().size(); i = i + 2) { |
| const uint32_t struct_id = inst->word(i); |
| const uint32_t index = inst->word(i + 1); |
| // ID validation phase ensures this is in fact a struct instruction and |
| // that the index is not out of bound. |
| _.RegisterDecorationsForStructMember(struct_id, index, |
| group_decorations.begin(), |
| group_decorations.end()); |
| } |
| break; |
| } |
| default: |
| break; |
| } |
| return SPV_SUCCESS; |
| } |
| |
| } // namespace |
| |
| spv_result_t AnnotationPass(ValidationState_t& _, const Instruction* inst) { |
| switch (inst->opcode()) { |
| case SpvOpDecorate: |
| if (auto error = ValidateDecorate(_, inst)) return error; |
| break; |
| case SpvOpMemberDecorate: |
| if (auto error = ValidateMemberDecorate(_, inst)) return error; |
| break; |
| case SpvOpDecorationGroup: |
| if (auto error = ValidateDecorationGroup(_, inst)) return error; |
| break; |
| case SpvOpGroupDecorate: |
| if (auto error = ValidateGroupDecorate(_, inst)) return error; |
| break; |
| case SpvOpGroupMemberDecorate: |
| if (auto error = ValidateGroupMemberDecorate(_, inst)) return error; |
| break; |
| default: |
| break; |
| } |
| |
| // In order to validate decoration rules, we need to know all the decorations |
| // that are applied to any given <id>. |
| RegisterDecorations(_, inst); |
| |
| return SPV_SUCCESS; |
| } |
| |
| } // namespace val |
| } // namespace spvtools |
