nvbit-sys 0.0.38

Native bindings to the NVIDIA NVBIT binary instrumentation library
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/* Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of NVIDIA CORPORATION nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* This file needs to be include once in your nvbit tool, it provides hooks to
 * the nvbit core library to properly load this tool.
 * Do not modify!!!  */

#pragma once
#include <stdio.h>
#include <cassert>
#include <stdint.h>

#define SIGN_EXTEND64(x) ((((int64_t)(x)) << 32) >> 32)

/* generic address generation code */
extern "C" __device__ __noinline__ uint64_t
gen_mref_addr(uint32_t ra_high, int is_ra64, uint32_t ra_low, int ra_stride,
              uint32_t ru_high, int is_ru64, uint32_t ru_low, int32_t imm,
              uint32_t mref_idx /* unused */) {
    int64_t base_addr = 0;

    if (is_ra64) {
        base_addr +=
            (((uint64_t)ra_high) << 32) | ((uint64_t)ra_low * ra_stride);
    } else {
        base_addr += SIGN_EXTEND64(ra_low * ra_stride);
    }

    if (is_ru64) {
        base_addr += (((uint64_t)ru_high) << 32) | ((uint64_t)ru_low);
    } else {
        base_addr += SIGN_EXTEND64(ru_low);
    }

    uint64_t addr = base_addr + imm;
#if 0
    printf(
        "ra_high %d - is_ra64 %d - ra_low %d - ra_stride %d - ru_high %d - "
        "is_ru64 %d - ru_low %d - imm %d base_addr %lx addr %lx\n",
        ra_high, is_ra64, ra_low, ra_stride, ru_high, is_ru64, ru_low, imm,
        base_addr, addr);
#endif
    return addr;
}

__global__ void load_module_nvbit_kernel(int var) {
    printf("");
    if (var) {
        int tmp = gen_mref_addr(var, var, var, var, var, var, var, var, var);
        printf("%d\n", tmp);
    }
}
extern "C" void __nvbit_start();

extern "C" void nvbit_at_context_init_hook() {
    __nvbit_start();
    load_module_nvbit_kernel<<<1, 1>>>(0);
    cudaDeviceSynchronize();
    assert(cudaGetLastError() == cudaSuccess);
}