From owner-dev-commits-src-branches@freebsd.org Mon Jan 4 21:11:17 2021 Return-Path: Delivered-To: dev-commits-src-branches@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id D3E1D4CD39C; Mon, 4 Jan 2021 21:11:17 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4D8pFx5Ws5z4WJD; Mon, 4 Jan 2021 21:11:17 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id AF3A620574; Mon, 4 Jan 2021 21:11:17 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 104LBHIK011030; Mon, 4 Jan 2021 21:11:17 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 104LBHDu011029; Mon, 4 Jan 2021 21:11:17 GMT (envelope-from git) Date: Mon, 4 Jan 2021 21:11:17 GMT Message-Id: <202101042111.104LBHDu011029@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Mitchell Horne Subject: git: 7b7138454fd3 - stable/12 - gdb(4): handle single register read packets MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: mhorne X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: 7b7138454fd3b629823728a365ebd34b6bd37212 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Jan 2021 21:11:18 -0000 The branch stable/12 has been updated by mhorne: URL: https://cgit.FreeBSD.org/src/commit/?id=7b7138454fd3b629823728a365ebd34b6bd37212 commit 7b7138454fd3b629823728a365ebd34b6bd37212 Author: Mitchell Horne AuthorDate: 2020-12-23 18:36:08 +0000 Commit: Mitchell Horne CommitDate: 2021-01-04 21:00:12 +0000 gdb(4): handle single register read packets We support bulk reads of the register set, but not reading specific registers via the 'p' packet. This is useful at least for the 'call' command in gdb. Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. (cherry picked from commit fd29833d9a7d8355ce21743ed8c706b72ba03363) --- sys/gdb/gdb_main.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sys/gdb/gdb_main.c b/sys/gdb/gdb_main.c index 206fee4f7566..4c16e06daecf 100644 --- a/sys/gdb/gdb_main.c +++ b/sys/gdb/gdb_main.c @@ -252,6 +252,17 @@ gdb_trap(int type, int code) gdb_tx_ok(); break; } + case 'p': { /* Read register. */ + uintmax_t reg; + if (gdb_rx_varhex(®)) { + gdb_tx_err(EINVAL); + break; + } + gdb_tx_begin(0); + gdb_tx_reg(reg); + gdb_tx_end(); + break; + } case 'P': { /* Write register. */ char *val; uintmax_t reg;