[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v2 11/15] xen/asm-generic: introduce generic div64.h header
All archs have the do_div implementation for BITS_PER_LONG == 64 so do_div64.h is moved to asm-generic. The patch introduces header stub necessry for full Xen build. Signed-off-by: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx> --- Changes in V2: - rename base to divisor - add "#if BITS_PER_LONG == 64" - fix code style --- xen/include/asm-generic/div64.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 xen/include/asm-generic/div64.h diff --git a/xen/include/asm-generic/div64.h b/xen/include/asm-generic/div64.h new file mode 100644 index 0000000000..068d8a11ad --- /dev/null +++ b/xen/include/asm-generic/div64.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __ASM_GENERIC_DIV64 +#define __ASM_GENERIC_DIV64 + +#include <xen/types.h> + +#if BITS_PER_LONG == 64 + +#define do_div(n, divisor) ({ \ + uint32_t divisor_ = (divisor); \ + uint32_t rem_ = (uint64_t)(n) % divisor_; \ + (n) = (uint64_t)(n) / divisor_; \ + rem_; \ +}) + +#endif /* BITS_PER_LONG */ + +#endif + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ -- 2.41.0
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