Date: Mon, 09 Feb 2026 16:28:30 +0000 From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Cc: Sarah Walker <sarah.walker2@arm.com> Subject: git: d8d8be5bbcae - stable/15 - arm64: Provide ifunc HWCAP structure definitions Message-ID: <698a0b2e.1d1e4.5a82860b@gitrepo.freebsd.org>
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The branch stable/15 has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=d8d8be5bbcaea330a6baafc975dd1a6a9f2e132a commit d8d8be5bbcaea330a6baafc975dd1a6a9f2e132a Author: Sarah Walker <sarah.walker2@arm.com> AuthorDate: 2026-01-13 14:19:56 +0000 Commit: Andrew Turner <andrew@FreeBSD.org> CommitDate: 2026-02-09 14:50:03 +0000 arm64: Provide ifunc HWCAP structure definitions IFUNC structure is based on Section 9.4.1 "GNU C Library IFUNC interface" from "System V ABI for the Arm 64-bit Architecture (AArch64)", 2025Q1. (https://github.com/ARM-software/abi-aa/releases/download/2025Q1/sysvabi64.pdf) Reviewed by: andrew Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D54598 (cherry picked from commit 449339bdba2470eded4d55c41b084cfc8f5ef73a) --- sys/arm64/include/ifunc.h | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) diff --git a/sys/arm64/include/ifunc.h b/sys/arm64/include/ifunc.h index de452ad34c8f..34e783df8fe5 100644 --- a/sys/arm64/include/ifunc.h +++ b/sys/arm64/include/ifunc.h @@ -29,20 +29,38 @@ #ifndef __ARM64_IFUNC_H #define __ARM64_IFUNC_H +struct __ifunc_arg_t +{ + unsigned long _size; /* Size of the struct, so it can grow. */ + unsigned long _hwcap; + unsigned long _hwcap2; + unsigned long _hwcap3; + unsigned long _hwcap4; +}; + +typedef struct __ifunc_arg_t __ifunc_arg_t; + +#define _IFUNC_ARG_HWCAP (1ULL << 62) + #define DEFINE_IFUNC(qual, ret_type, name, args) \ static ret_type (*name##_resolver(void))args __used; \ qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \ static ret_type (*name##_resolver(void))args #define DEFINE_UIFUNC(qual, ret_type, name, args) \ - static ret_type (*name##_resolver(uint64_t, uint64_t, \ + static ret_type (*name##_resolver(uint64_t, \ + const struct __ifunc_arg_t *ifunc_arg, \ uint64_t, uint64_t, uint64_t, uint64_t, uint64_t, \ uint64_t))args __used; \ qual ret_type name args __attribute__((ifunc(#name "_resolver"))); \ - static ret_type (*name##_resolver(uint64_t _arg1 __unused, \ - uint64_t _arg2 __unused, uint64_t _arg3 __unused, \ - uint64_t _arg4 __unused, uint64_t _arg5 __unused, \ - uint64_t _arg6 __unused, uint64_t _arg7 __unused, \ + static ret_type (*name##_resolver( \ + uint64_t at_hwcap __unused, \ + const struct __ifunc_arg_t *ifunc_arg __unused, \ + uint64_t _arg3 __unused, \ + uint64_t _arg4 __unused, \ + uint64_t _arg5 __unused, \ + uint64_t _arg6 __unused, \ + uint64_t _arg7 __unused, \ uint64_t _arg8 __unused))args #endifhome | help
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