Date: Fri, 07 Aug 2026 10:35:05 +0000 From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 2947a48bea3b - stable/15 - amd64: try to fix the build with old clang that does not know about FRED Message-ID: <6a75b4d9.23eb3.4e62c32c@gitrepo.freebsd.org>
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The branch stable/15 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=2947a48bea3b720e58f3a2e1d6740789e9cc259a commit 2947a48bea3b720e58f3a2e1d6740789e9cc259a Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2026-07-30 09:45:51 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2026-08-07 10:27:34 +0000 amd64: try to fix the build with old clang that does not know about FRED (cherry picked from commit 72952bf6a307391e127d3ab4a6f073664ce62d89) --- sys/amd64/amd64/exception.S | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/sys/amd64/amd64/exception.S b/sys/amd64/amd64/exception.S index 8eb5c185974d..0e783fe4ff00 100644 --- a/sys/amd64/amd64/exception.S +++ b/sys/amd64/amd64/exception.S @@ -1403,6 +1403,23 @@ gsbase_load_fault: movq $0,PCB_GSBASE(%r8) jmp doreti +#if defined(__clang__) && (__clang_major__ <= 18) + .macro lkgs reg + .if \reg != %ax + .err "Only %ax is supported" + .endif + .byte 0xf2, 0x0f, 0x00, 0xf0 + .endm + + .macro eretu + .byte 0xf3, 0x0f, 0x01, 0xca + .endm + + .macro erets + .byte 0xf2, 0x0f, 0x01, 0xca + .endm +#endif + /* * FRED guarantees that on entry, %rflags is set to '2', which in * particular means that interrupts are disabled, and DF/AC are clear.home | help
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