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feat(linker): allow use of local symbols

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This commit adds support for handling local symbols.
* Added 2 fields to SymbolInfo - binding, and associated
instructions segment id.
* Simplified code for decoding elf symbols and relocations.
* Simplified code for patching instruction segments.
* Changed logic of decodeElfSymbolTableAndRelocations:
* Add every global symbol to symbol map.
* Add any local symbol used by relocation to symbol map.
* Changed logic of link:
* After performing relocations remove local symbols from map.
* Replaced UNRECOVERABLE_IF with returning error.
* Removed LocalSymbolInfo structure used before for local kernel jumps.
* Removed old tests.

Signed-off-by: Krystian Chmielewski <krystian.chmielewski@intel.com>
This commit is contained in:
Krystian Chmielewski
2023-02-20 10:04:40 +00:00
committed by Compute-Runtime-Automation
parent c8b90613a8
commit 5caf7f7290
10 changed files with 560 additions and 989 deletions
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6
shared/test/common/compiler_interface/linker_mock.h
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2019-2022 Intel Corporation
* Copyright (C) 2019-2023 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
@@ -27,7 +27,6 @@ struct WhiteBox<NEO::LinkerInput> : NEO::LinkerInput {
using BaseClass::extFuncSymbols;
using BaseClass::extFunDependencies;
using BaseClass::kernelDependencies;
using BaseClass::localSymbols;
using BaseClass::parseRelocationForExtFuncUsage;
using BaseClass::symbols;
using BaseClass::textRelocations;
@@ -39,11 +38,10 @@ template <>
struct WhiteBox<NEO::Linker> : NEO::Linker {
using BaseClass = NEO::Linker;
using BaseClass::BaseClass;
using BaseClass::localRelocatedSymbols;
using BaseClass::patchDataSegments;
using BaseClass::patchInstructionsSegments;
using BaseClass::processRelocations;
using BaseClass::relocatedSymbols;
using BaseClass::relocateSymbols;
using BaseClass::resolveExternalFunctions;
};