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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
56 lines
2.2 KiB
C++
56 lines
2.2 KiB
C++
//=== MachORelocation.h - Mach-O Relocation Info ----------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the MachORelocation class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MACHORELOCATION_H
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#define LLVM_CODEGEN_MACHORELOCATION_H
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#include "llvm/Support/DataTypes.h"
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namespace llvm {
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/// MachORelocation - This struct contains information about each relocation
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/// that needs to be emitted to the file.
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/// see <mach-o/reloc.h>
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class MachORelocation {
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uint32_t r_address; // offset in the section to what is being relocated
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uint32_t r_symbolnum; // symbol index if r_extern == 1 else section index
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bool r_pcrel; // was relocated pc-relative already
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uint8_t r_length; // length = 2 ^ r_length
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bool r_extern; //
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uint8_t r_type; // if not 0, machine-specific relocation type.
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bool r_scattered; // 1 = scattered, 0 = non-scattered
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int32_t r_value; // the value the item to be relocated is referring
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// to.
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public:
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uint32_t getPackedFields() const {
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if (r_scattered)
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return (1 << 31) | (r_pcrel << 30) | ((r_length & 3) << 28) |
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((r_type & 15) << 24) | (r_address & 0x00FFFFFF);
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else
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return (r_symbolnum << 8) | (r_pcrel << 7) | ((r_length & 3) << 5) |
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(r_extern << 4) | (r_type & 15);
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}
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uint32_t getAddress() const { return r_scattered ? r_value : r_address; }
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uint32_t getRawAddress() const { return r_address; }
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MachORelocation(uint32_t addr, uint32_t index, bool pcrel, uint8_t len,
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bool ext, uint8_t type, bool scattered = false,
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int32_t value = 0) :
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r_address(addr), r_symbolnum(index), r_pcrel(pcrel), r_length(len),
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r_extern(ext), r_type(type), r_scattered(scattered), r_value(value) {}
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};
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} // end llvm namespace
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#endif // LLVM_CODEGEN_MACHORELOCATION_H
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