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36 lines
951 B
C++
36 lines
951 B
C++
// SPDX-FileCopyrightText: 2021 Connor McLaughlin <stenzek@gmail.com>
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// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
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#pragma once
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#include "types.h"
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#include <cstddef>
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#include <cstdint>
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struct fastjmp_buf
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{
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#if defined(_WIN32) && defined(_M_AMD64)
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static constexpr std::size_t BUF_SIZE = 240;
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#elif defined(_M_ARM64) || defined(__aarch64__)
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static constexpr std::size_t BUF_SIZE = 168;
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#elif defined(_M_ARM) || defined(__arm__)
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static constexpr std::size_t BUF_SIZE = 112;
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#elif defined(__x86_64__)
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static constexpr std::size_t BUF_SIZE = 64;
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#elif defined(_M_IX86) || defined(__i386__)
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static constexpr std::size_t BUF_SIZE = 24;
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#elif defined(__riscv) && __riscv_xlen == 64
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static constexpr std::size_t BUF_SIZE = 208;
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#else
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#error Unknown architecture.
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#endif
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alignas(16) std::uint8_t buf[BUF_SIZE];
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};
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extern "C" {
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int fastjmp_set(fastjmp_buf* buf);
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[[noreturn]] void fastjmp_jmp(const fastjmp_buf* buf, int ret);
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}
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