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/*
* Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-dsp-lib
* Created on: 31 мар. 2020 г.
*
* lsp-dsp-lib is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* lsp-dsp-lib is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with lsp-dsp-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PRIVATE_DSP_ARCH_AARCH64_FPCR_H_
#define PRIVATE_DSP_ARCH_AARCH64_FPCR_H_
#ifndef PRIVATE_DSP_ARCH_AARCH64_IMPL
#error "This header should not be included directly"
#endif /* PRIVATE_DSP_ARCH_AARCH64_IMPL */
#define FPCR_IOE (1 << 8) /* Invalid operation exception enable */
#define FPCR_DZE (1 << 9) /* Division by zero exception enable */
#define FPCR_OFE (1 << 10) /* Overflow exception enable */
#define FPCR_UFE (1 << 11) /* Underflow exception enable */
#define FPCR_IXE (1 << 12) /* Inexact exception enable */
#define FPCR_IDE (1 << 15) /* Input Denormal exception enable */
#define FPCR_FZ16 (1 << 19) /* Flush-to-zero mode control bit on half-precision data-processing instructions */
#define FPCR_RMODE_MASK (3 << 22) /* Rounding mode mask */
#define FPCR_RMODE_RN (0 << 22) /* Rounding to nearest */
#define FPCR_RMODE_RP (1 << 22) /* Rounding towards plus infinity */
#define FPCR_RMODE_RM (2 << 22) /* Rounding towards minus infinity */
#define FPCR_RMODE_RZ (3 << 22) /* Rounding towards zero */
#define FPCR_FZ (1 << 24) /* Flush-to-zero mode */
#define FPCR_DN (1 << 25) /* Default NaN mode control */
#define FPCR_AHP (1 << 26) /* Alternative half-precision control */
namespace lsp
{
namespace aarch64
{
inline uint64_t read_fpcr()
{
uint64_t fpcr = 0;
ARCH_AARCH64_ASM
(
__ASM_EMIT("mrs %[fpcr], FPCR")
: [fpcr] "=&r" (fpcr)
: :
);
return fpcr;
}
inline void write_fpcr(uint64_t fpcr)
{
ARCH_AARCH64_ASM
(
__ASM_EMIT("msr FPCR, %[fpcr]")
:
: [fpcr] "r" (fpcr)
:
);
}
}
}
#endif /* PRIVATE_DSP_ARCH_AARCH64_FPCR_H_ */
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