/*
 * Copyright (C) 2024 The Android Open Source Project
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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#pragma once

#if defined(__riscv)
// TLS_DTV_OFFSET is a constant used in relocation fields, defined in RISC-V ELF Specification[1]
// The front of the TCB contains a pointer to the DTV, and each pointer in DTV
// points to 0x800 past the start of a TLS block to make full use of the range
// of load/store instructions, refer to [2].
//
// [1]: RISC-V ELF Specification.
// https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc#constants
// [2]: Documentation of TLS data structures
// https://github.com/riscv-non-isa/riscv-elf-psabi-doc/issues/53
#define TLS_DTV_OFFSET 0x800
#else
#define TLS_DTV_OFFSET 0
#endif