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/* Copyright (c) 2024-2025 LunarG, 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.
*/
#pragma once
#include <stdint.h>
#include "containers/limits.h"
#include "pass.h"
namespace gpuav {
namespace spirv {
// Create a pass to instrument physical buffer address checking
// This pass instruments all physical buffer address references to check that
// all referenced bytes fall in a valid buffer.
class BufferDeviceAddressPass : public Pass {
public:
BufferDeviceAddressPass(Module& module);
const char* Name() const final { return "BufferDeviceAddressPass"; }
bool Instrument() final;
void PrintDebugInfo() const final;
private:
// This is metadata tied to a single instruction gathered during RequiresInstrumentation() to be used later
struct InstructionMeta {
const Instruction* target_instruction = nullptr;
const Instruction* pointer_inst = nullptr;
uint32_t alignment_literal = 0;
uint32_t access_size = 0;
bool type_is_struct = false;
};
bool RequiresInstrumentation(const Function& function, const Instruction& inst, InstructionMeta& meta);
uint32_t CreateFunctionCall(BasicBlock& block, InstructionIt* inst_it, const InstructionMeta& meta);
// Function IDs to link in
uint32_t function_range_id_ = 0;
uint32_t function_align_id_ = 0;
// This is find the range of the statically accessed members in a BDA struct
// We track for each struct, the offsets into it that are statically accessed.
// From here, we can do the BDA range check just once.
// (example https://godbolt.org/z/v6boos6Yr)
struct Range {
uint32_t min_instruction = 0; // used to only instrument at the lowest offset
uint32_t min_struct_offsets = vvl::kU32Max;
uint32_t max_struct_offsets = 0;
};
vvl::unordered_map<uint32_t, Range> block_struct_range_map_;
vvl::unordered_set<uint32_t> block_skip_list_;
};
} // namespace spirv
} // namespace gpuav
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