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Wed, 28 May 2025 11:11:43 GMT (envelope-from git) Date: Wed, 28 May 2025 11:11:43 GMT Message-Id: <202505281111.54SBBhol049618@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: 7171e591a4c7 - main - amd64: add ptrace PT_{GET,SET}TLSBASE requests List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 7171e591a4c70eb4ee616e33373fd62773ad5a08 Auto-Submitted: auto-generated The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=7171e591a4c70eb4ee616e33373fd62773ad5a08 commit 7171e591a4c70eb4ee616e33373fd62773ad5a08 Author: Konstantin Belousov AuthorDate: 2025-05-22 06:56:24 +0000 Commit: Konstantin Belousov CommitDate: 2025-05-28 11:11:23 +0000 amd64: add ptrace PT_{GET,SET}TLSBASE requests Tested by: pho Reviewed by: olce Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D50482 --- sys/amd64/amd64/ptrace_machdep.c | 21 +++++++++++++++++++++ sys/x86/include/ptrace.h | 2 ++ 2 files changed, 23 insertions(+) diff --git a/sys/amd64/amd64/ptrace_machdep.c b/sys/amd64/amd64/ptrace_machdep.c index 715f0749bda9..69616e80b708 100644 --- a/sys/amd64/amd64/ptrace_machdep.c +++ b/sys/amd64/amd64/ptrace_machdep.c @@ -368,6 +368,27 @@ cpu_ptrace(struct thread *td, int req, void *addr, int data) cpu_ptrace_setbase(td, req, rv); break; + case PT_GETTLSBASE: + pcb = td->td_pcb; + if ((pcb->pcb_flags & PCB_TLSBASE) != 0) + error = copyout(&pcb->pcb_tlsbase, addr, sizeof(*r)); + else + error = ESRCH; + break; + + case PT_SETTLSBASE: + pcb = td->td_pcb; + error = copyin(addr, &rv, sizeof(rv)); + if (error != 0) + break; + if (rv >= td->td_proc->p_sysent->sv_maxuser) { + error = EINVAL; + break; + } + pcb->pcb_tlsbase = rv; + set_pcb_flags(pcb, PCB_TLSBASE); + break; + default: error = EINVAL; break; diff --git a/sys/x86/include/ptrace.h b/sys/x86/include/ptrace.h index f477094bdd14..d4fa1fe45a3c 100644 --- a/sys/x86/include/ptrace.h +++ b/sys/x86/include/ptrace.h @@ -54,6 +54,8 @@ #define PT_SETFSBASE (PT_FIRSTMACH + 8) #define PT_GETGSBASE (PT_FIRSTMACH + 9) #define PT_SETGSBASE (PT_FIRSTMACH + 10) +#define PT_GETTLSBASE (PT_FIRSTMACH + 11) +#define PT_SETTLSBASE (PT_FIRSTMACH + 12) /* Argument structure for PT_GETXSTATE_INFO. */ struct ptrace_xstate_info {