1429c83942
This commit adds two functions which save/restore the entire FPU state. On RISC-V, you only need to save the floating pointer registers themselves and the fcsr CSR, which contains the entire state of the F/D extensions.
24 lines
466 B
C++
24 lines
466 B
C++
/*
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* Copyright (c) 2023, Sönke Holz <sholz8530@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <AK/Platform.h>
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VALIDATE_IS_RISCV64()
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namespace Kernel {
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// This struct will get pushed on the stack by the signal handling code.
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// Therefore, it has to be aligned to a 16-byte boundary.
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struct [[gnu::aligned(16)]] FPUState {
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// FIXME: Add support for the Q extension.
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u64 f[32];
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u64 fcsr;
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};
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}
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