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b95e2fbd85
This introduces compile-time and run-time CPU detection on RISC-V. In practice, I doubt that FFmpeg will ever see a RISC-V CPU without all of I, F and D extensions, and if it does, it probably won't have run-time detection. So the flags are essentially always set. But as things stand, checkasm wants them that way. Compare the ARMV8 flag on AArch64. We are nowhere near running short on CPU flag bits.
63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_CPU_INTERNAL_H
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#define AVUTIL_CPU_INTERNAL_H
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#include "config.h"
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#include "cpu.h"
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#define CPUEXT_SUFFIX(flags, suffix, cpuext) \
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(HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext))
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#define CPUEXT_SUFFIX_FAST2(flags, suffix, cpuext, slow_cpuext) \
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(HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext) && \
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!((flags) & AV_CPU_FLAG_ ## slow_cpuext ## SLOW))
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#define CPUEXT_SUFFIX_SLOW(flags, suffix, cpuext) \
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(HAVE_ ## cpuext ## suffix && \
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((flags) & (AV_CPU_FLAG_ ## cpuext | AV_CPU_FLAG_ ## cpuext ## SLOW)))
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#define CPUEXT_SUFFIX_SLOW2(flags, suffix, cpuext, slow_cpuext) \
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(HAVE_ ## cpuext ## suffix && ((flags) & AV_CPU_FLAG_ ## cpuext) && \
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((flags) & (AV_CPU_FLAG_ ## slow_cpuext | AV_CPU_FLAG_ ## slow_cpuext ## SLOW)))
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#define CPUEXT_SUFFIX_FAST(flags, suffix, cpuext) CPUEXT_SUFFIX_FAST2(flags, suffix, cpuext, cpuext)
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#define CPUEXT(flags, cpuext) CPUEXT_SUFFIX(flags, , cpuext)
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#define CPUEXT_FAST(flags, cpuext) CPUEXT_SUFFIX_FAST(flags, , cpuext)
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#define CPUEXT_SLOW(flags, cpuext) CPUEXT_SUFFIX_SLOW(flags, , cpuext)
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int ff_get_cpu_flags_mips(void);
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int ff_get_cpu_flags_aarch64(void);
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int ff_get_cpu_flags_arm(void);
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int ff_get_cpu_flags_ppc(void);
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int ff_get_cpu_flags_riscv(void);
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int ff_get_cpu_flags_x86(void);
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int ff_get_cpu_flags_loongarch(void);
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size_t ff_get_cpu_max_align_mips(void);
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size_t ff_get_cpu_max_align_aarch64(void);
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size_t ff_get_cpu_max_align_arm(void);
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size_t ff_get_cpu_max_align_ppc(void);
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size_t ff_get_cpu_max_align_x86(void);
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size_t ff_get_cpu_max_align_loongarch(void);
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#endif /* AVUTIL_CPU_INTERNAL_H */
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