35ba103009
HSA functions calls are still not supported properly with HSAIL, but the recent AMP runtime modifications rely on being able to parse the BRIG/HSAIL files that are extracted from the application binaries. We need to parse the function call HSAIL definitions, but we do not actually need to make the function calls. The reason that this happens is that HCC appends a set of routines to every HSAIL binary that it creates. These extra, unnecessary routines exist in the HCC source as a file; this file is cat'd onto everything that the compiler outputs before being assembled into the application's binary. HCC does this because it might call these helper functions. However, it doesn't actually appear to do so in the AMP codes so we just parse these functions with the HSAIL parser and then ignore them.
477 lines
15 KiB
C++
477 lines
15 KiB
C++
/*
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* Copyright (c) 2012-2015 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* For use for simulation and test purposes only
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* Author: Steve Reinhardt, Anthony Gutierrez
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*/
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#include "gpu-compute/brig_object.hh"
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <cassert>
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#include <cstddef>
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#include <cstdlib>
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#include "arch/hsail/Brig.h"
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#include "base/misc.hh"
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#include "base/trace.hh"
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#include "debug/BRIG.hh"
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#include "debug/HSAILObject.hh"
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#include "debug/HSALoader.hh"
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using namespace Brig;
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std::vector<std::function<HsaObject*(const std::string&, int, uint8_t*)>>
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HsaObject::tryFileFuncs = { BrigObject::tryFile };
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extern int getBrigDataTypeBytes(BrigType16_t t);
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const char *BrigObject::sectionNames[] =
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{
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"hsa_data",
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"hsa_code",
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"hsa_operand",
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".shstrtab"
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};
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const char *segmentNames[] =
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{
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"none",
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"flat",
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"global",
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"readonly",
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"kernarg",
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"group",
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"private",
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"spill",
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"args"
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};
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const uint8_t*
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BrigObject::getSectionOffset(enum SectionIndex sec, int offs) const
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{
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// allow offs == size for dummy end pointers
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assert(offs <= sectionInfo[sec].size);
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return sectionInfo[sec].ptr + offs;
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}
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const char*
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BrigObject::getString(int offs) const
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{
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return (const char*)(getSectionOffset(DataSectionIndex, offs) + 4);
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}
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const BrigBase*
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BrigObject::getCodeSectionEntry(int offs) const
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{
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return (const BrigBase*)getSectionOffset(CodeSectionIndex, offs);
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}
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const BrigData*
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BrigObject::getBrigBaseData(int offs) const
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{
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return (Brig::BrigData*)(getSectionOffset(DataSectionIndex, offs));
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}
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const uint8_t*
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BrigObject::getData(int offs) const
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{
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return getSectionOffset(DataSectionIndex, offs);
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}
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const BrigOperand*
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BrigObject::getOperand(int offs) const
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{
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return (const BrigOperand*)getSectionOffset(OperandsSectionIndex, offs);
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}
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unsigned
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BrigObject::getOperandPtr(int offs, int index) const
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{
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unsigned *op_offs = (unsigned*)(getData(offs + 4 * (index + 1)));
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return *op_offs;
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}
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const BrigInstBase*
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BrigObject::getInst(int offs) const
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{
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return (const BrigInstBase*)getSectionOffset(CodeSectionIndex, offs);
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}
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HsaCode*
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BrigObject::getKernel(const std::string &name) const
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{
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return nullptr;
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}
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HsaCode*
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BrigObject::getFunction(const std::string &name) const
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{
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for (int i = 0; i < functions.size(); ++i) {
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if (functions[i]->name() == name) {
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return functions[i];
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}
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}
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return nullptr;
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}
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void
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BrigObject::processDirectives(const BrigBase *dirPtr, const BrigBase *endPtr,
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StorageMap *storageMap)
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{
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while (dirPtr < endPtr) {
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if (!dirPtr->byteCount) {
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fatal("Bad directive size 0\n");
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}
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// calculate next pointer now so we can override it if needed
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const BrigBase *nextDirPtr = brigNext(dirPtr);
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DPRINTF(HSAILObject, "Code section entry kind: #%x, byte count: %d\n",
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dirPtr->kind, dirPtr->byteCount);
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switch (dirPtr->kind) {
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case BRIG_KIND_DIRECTIVE_FUNCTION:
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{
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const BrigDirectiveExecutable *p M5_VAR_USED =
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reinterpret_cast<const BrigDirectiveExecutable*>(dirPtr);
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DPRINTF(HSAILObject,"DIRECTIVE_FUNCTION: %s offset: "
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"%d next: %d\n", getString(p->name),
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p->firstCodeBlockEntry, p->nextModuleEntry);
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if (p->firstCodeBlockEntry != p->nextModuleEntry) {
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// Function calls are not supported. We allow the BRIG
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// object file to create stubs, but the function calls will
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// not work properly if the application makes use of them.
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warn("HSA function invocations are unsupported.\n");
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const char *name = getString(p->name);
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HsailCode *code_obj = nullptr;
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for (int i = 0; i < functions.size(); ++i) {
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if (functions[i]->name() == name) {
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code_obj = functions[i];
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break;
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}
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}
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if (!code_obj) {
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// create new local storage map for kernel-local symbols
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code_obj = new HsailCode(name, p, this,
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new StorageMap(storageMap));
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functions.push_back(code_obj);
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} else {
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panic("Multiple definition of Function!!: %s\n",
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getString(p->name));
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}
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}
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nextDirPtr = getCodeSectionEntry(p->nextModuleEntry);
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}
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break;
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case BRIG_KIND_DIRECTIVE_KERNEL:
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{
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const BrigDirectiveExecutable *p =
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reinterpret_cast<const BrigDirectiveExecutable*>(dirPtr);
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DPRINTF(HSAILObject,"DIRECTIVE_KERNEL: %s offset: %d count: "
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"next: %d\n", getString(p->name),
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p->firstCodeBlockEntry, p->nextModuleEntry);
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const char *name = getString(p->name);
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if (name[0] == '&')
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name++;
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std::string str = name;
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char *temp;
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int len = str.length();
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if (str[len - 1] >= 'a' && str[len - 1] <= 'z') {
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temp = new char[str.size() + 1];
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std::copy(str.begin(), str.end() , temp);
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temp[str.size()] = '\0';
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} else {
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temp = new char[str.size()];
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std::copy(str.begin(), str.end() - 1 , temp);
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temp[str.size() - 1 ] = '\0';
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}
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std::string kernel_name = temp;
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delete[] temp;
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HsailCode *code_obj = nullptr;
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for (const auto &kernel : kernels) {
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if (kernel->name() == kernel_name) {
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code_obj = kernel;
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break;
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}
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}
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if (!code_obj) {
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// create new local storage map for kernel-local symbols
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code_obj = new HsailCode(kernel_name, p, this,
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new StorageMap(storageMap));
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kernels.push_back(code_obj);
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}
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nextDirPtr = getCodeSectionEntry(p->nextModuleEntry);
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}
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break;
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case BRIG_KIND_DIRECTIVE_VARIABLE:
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{
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const BrigDirectiveVariable *p =
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reinterpret_cast<const BrigDirectiveVariable*>(dirPtr);
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uint64_t readonlySize_old =
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storageMap->getSize(BRIG_SEGMENT_READONLY);
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StorageElement* se = storageMap->addSymbol(p, this);
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DPRINTF(HSAILObject, "DIRECTIVE_VARIABLE, symbol %s\n",
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getString(p->name));
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if (p->segment == BRIG_SEGMENT_READONLY) {
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// readonly memory has initialization data
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uint8_t* readonlyData_old = readonlyData;
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readonlyData =
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new uint8_t[storageMap->getSize(BRIG_SEGMENT_READONLY)];
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if (p->init) {
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if ((p->type == BRIG_TYPE_ROIMG) ||
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(p->type == BRIG_TYPE_WOIMG) ||
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(p->type == BRIG_TYPE_SAMP) ||
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(p->type == BRIG_TYPE_SIG32) ||
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(p->type == BRIG_TYPE_SIG64)) {
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panic("Read only data type not supported: %s\n",
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getString(p->name));
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}
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const BrigOperand *brigOp = getOperand(p->init);
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assert(brigOp->kind ==
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BRIG_KIND_OPERAND_CONSTANT_BYTES);
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const Brig::BrigData *operand_data M5_VAR_USED =
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getBrigBaseData(((BrigOperandConstantBytes*)
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brigOp)->bytes);
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assert((operand_data->byteCount / 4) > 0);
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uint8_t *symbol_data =
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(uint8_t*)getData(((BrigOperandConstantBytes*)
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brigOp)->bytes + 4);
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// copy the old data and add the new data
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if (readonlySize_old > 0) {
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memcpy(readonlyData, readonlyData_old,
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readonlySize_old);
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}
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memcpy(readonlyData + se->offset, symbol_data,
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se->size);
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delete[] readonlyData_old;
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}
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}
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}
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break;
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case BRIG_KIND_DIRECTIVE_LABEL:
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{
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const BrigDirectiveLabel M5_VAR_USED *p =
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reinterpret_cast<const BrigDirectiveLabel*>(dirPtr);
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panic("Label directives cannot be at the module level: %s\n",
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getString(p->name));
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}
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break;
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case BRIG_KIND_DIRECTIVE_COMMENT:
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{
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const BrigDirectiveComment M5_VAR_USED *p =
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reinterpret_cast<const BrigDirectiveComment*>(dirPtr);
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DPRINTF(HSAILObject, "DIRECTIVE_COMMENT: %s\n",
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getString(p->name));
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}
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break;
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case BRIG_KIND_DIRECTIVE_LOC:
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{
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DPRINTF(HSAILObject, "BRIG_DIRECTIVE_LOC\n");
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}
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break;
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case BRIG_KIND_DIRECTIVE_MODULE:
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{
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const BrigDirectiveModule M5_VAR_USED *p =
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reinterpret_cast<const BrigDirectiveModule*>(dirPtr);
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DPRINTF(HSAILObject, "BRIG_DIRECTIVE_MODULE: %s\n",
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getString(p->name));
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}
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break;
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case BRIG_KIND_DIRECTIVE_CONTROL:
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{
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DPRINTF(HSAILObject, "DIRECTIVE_CONTROL\n");
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}
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break;
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case BRIG_KIND_DIRECTIVE_PRAGMA:
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{
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DPRINTF(HSAILObject, "DIRECTIVE_PRAGMA\n");
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}
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break;
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case BRIG_KIND_DIRECTIVE_EXTENSION:
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{
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DPRINTF(HSAILObject, "DIRECTIVE_EXTENSION\n");
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}
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break;
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case BRIG_KIND_DIRECTIVE_ARG_BLOCK_START:
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{
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DPRINTF(HSAILObject, "DIRECTIVE_ARG_BLOCK_START\n");
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}
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break;
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case BRIG_KIND_DIRECTIVE_ARG_BLOCK_END:
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{
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DPRINTF(HSAILObject, "DIRECTIVE_ARG_BLOCK_END\n");
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}
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break;
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default:
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if (dirPtr->kind >= BRIG_KIND_INST_BEGIN &&
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dirPtr->kind <= BRIG_KIND_INST_END)
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break;
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if (dirPtr->kind >= BRIG_KIND_OPERAND_BEGIN &&
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dirPtr->kind <= BRIG_KIND_OPERAND_END)
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break;
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warn("Unknown Brig directive kind: %d\n", dirPtr->kind);
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break;
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}
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dirPtr = nextDirPtr;
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}
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}
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HsaObject*
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BrigObject::tryFile(const std::string &fname, int len, uint8_t *fileData)
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{
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const char *brig_ident = "HSA BRIG";
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if (memcmp(brig_ident, fileData, MODULE_IDENTIFICATION_LENGTH))
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return nullptr;
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return new BrigObject(fname, len, fileData);
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}
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BrigObject::BrigObject(const std::string &fname, int len, uint8_t *fileData)
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: HsaObject(fname), storageMap(new StorageMap())
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{
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const char *brig_ident = "HSA BRIG";
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BrigModuleHeader *mod_hdr = (BrigModuleHeader*)fileData;
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fatal_if(memcmp(brig_ident, mod_hdr, MODULE_IDENTIFICATION_LENGTH),
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"%s is not a BRIG file\n", fname);
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if (mod_hdr->brigMajor != BRIG_VERSION_BRIG_MAJOR ||
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mod_hdr->brigMinor != BRIG_VERSION_BRIG_MINOR) {
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fatal("%s: BRIG version mismatch, %d.%d != %d.%d\n",
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fname, mod_hdr->brigMajor, mod_hdr->brigMinor,
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BRIG_VERSION_BRIG_MAJOR, BRIG_VERSION_BRIG_MINOR);
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}
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fatal_if(mod_hdr->sectionCount != NumSectionIndices, "%s: BRIG section "
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"count (%d) != expected value (%d)\n", fname,
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mod_hdr->sectionCount, NumSectionIndices);
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for (int i = 0; i < NumSectionIndices; ++i) {
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sectionInfo[i].ptr = nullptr;
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}
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uint64_t *sec_idx_table = (uint64_t*)(fileData + mod_hdr->sectionIndex);
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for (int sec_idx = 0; sec_idx < mod_hdr->sectionCount; ++sec_idx) {
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uint8_t *sec_hdr_byte_ptr = fileData + sec_idx_table[sec_idx];
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BrigSectionHeader *sec_hdr = (BrigSectionHeader*)sec_hdr_byte_ptr;
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// It doesn't look like cprintf supports string precision values,
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// but if this breaks, the right answer is to fix that
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DPRINTF(HSAILObject, "found section %.*s\n", sec_hdr->nameLength,
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sec_hdr->name);
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sectionInfo[sec_idx].ptr = new uint8_t[sec_hdr->byteCount];
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memcpy(sectionInfo[sec_idx].ptr, sec_hdr_byte_ptr, sec_hdr->byteCount);
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sectionInfo[sec_idx].size = sec_hdr->byteCount;
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}
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BrigSectionHeader *code_hdr =
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(BrigSectionHeader*)sectionInfo[CodeSectionIndex].ptr;
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DPRINTF(HSAILObject, "Code section hdr, count: %d, hdr count: %d, "
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"name len: %d\n", code_hdr->byteCount, code_hdr->headerByteCount,
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code_hdr->nameLength);
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// start at offset 4 to skip initial null entry (see Brig spec)
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processDirectives(getCodeSectionEntry(code_hdr->headerByteCount),
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getCodeSectionEntry(sectionInfo[CodeSectionIndex].size),
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storageMap);
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delete[] fileData;
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DPRINTF(HSALoader, "BRIG object %s loaded.\n", fname);
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}
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BrigObject::~BrigObject()
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{
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for (int i = 0; i < NumSectionIndices; ++i)
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if (sectionInfo[i].ptr)
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delete[] sectionInfo[i].ptr;
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}
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