Date: Fri, 4 Sep 2020 21:55:22 +0000 (UTC) From: Brooks Davis <brooks@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r365344 - head/sys/riscv/riscv Message-ID: <202009042155.084LtMbv030993@repo.freebsd.org>
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Author: brooks Date: Fri Sep 4 21:55:22 2020 New Revision: 365344 URL: https://svnweb.freebsd.org/changeset/base/365344 Log: Round TF_SIZE up to the stack alignment (16-bytes). The kernel adjusts the stack by TF_SIZE and the RISC-V ABI requires that it remain 16-byte aligned. Reported by: CHERI, jrtc27 Reviewed by: mhorne Obtained from: CheriBSD Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D26328 Modified: head/sys/riscv/riscv/genassym.c Modified: head/sys/riscv/riscv/genassym.c ============================================================================== --- head/sys/riscv/riscv/genassym.c Fri Sep 4 21:48:36 2020 (r365343) +++ head/sys/riscv/riscv/genassym.c Fri Sep 4 21:55:22 2020 (r365344) @@ -87,7 +87,7 @@ ASSYM(TD_FRAME, offsetof(struct thread, td_frame)); ASSYM(TD_MD, offsetof(struct thread, td_md)); ASSYM(TD_LOCK, offsetof(struct thread, td_lock)); -ASSYM(TF_SIZE, sizeof(struct trapframe)); +ASSYM(TF_SIZE, roundup2(sizeof(struct trapframe), STACKALIGNBYTES + 1)); ASSYM(TF_RA, offsetof(struct trapframe, tf_ra)); ASSYM(TF_SP, offsetof(struct trapframe, tf_sp)); ASSYM(TF_GP, offsetof(struct trapframe, tf_gp));
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