From patchwork Tue Feb 11 09:01:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tankut Baris Aktemur X-Patchwork-Id: 37935 Received: (qmail 124040 invoked by alias); 11 Feb 2020 09:04:07 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Delivered-To: mailing list gdb-patches@sourceware.org Received: (qmail 120779 invoked by uid 89); 11 Feb 2020 09:03:47 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-24.5 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3 autolearn=ham version=3.3.1 spammy=3956 X-HELO: mga04.intel.com Received: from mga04.intel.com (HELO mga04.intel.com) (192.55.52.120) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 11 Feb 2020 09:03:33 +0000 Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Feb 2020 01:03:25 -0800 Received: from irvmail001.ir.intel.com ([163.33.26.43]) by fmsmga006.fm.intel.com with ESMTP; 11 Feb 2020 01:03:24 -0800 Received: from ulvlx001.iul.intel.com (ulvlx001.iul.intel.com [172.28.207.17]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id 01B93Nwh002272; Tue, 11 Feb 2020 09:03:23 GMT Received: from ulvlx001.iul.intel.com (localhost [127.0.0.1]) by ulvlx001.iul.intel.com with ESMTP id 01B93NkT010618; Tue, 11 Feb 2020 10:03:23 +0100 Received: (from taktemur@localhost) by ulvlx001.iul.intel.com with LOCAL id 01B93N47010614; Tue, 11 Feb 2020 10:03:23 +0100 From: Tankut Baris Aktemur To: gdb-patches@sourceware.org Subject: [PATCH 39/58] gdbserver: turn target op 'thread_stopped' into a method Date: Tue, 11 Feb 2020 10:01:51 +0100 Message-Id: <0c607497d4db16673bc84d1ed08bf99efae5a49a.1581410934.git.tankut.baris.aktemur@intel.com> In-Reply-To: References: In-Reply-To: References: X-IsSubscribed: yes gdbserver/ChangeLog: 2020-02-10 Tankut Baris Aktemur Make process_stratum_target's thread_stopped op a method of process_target. * target.h (struct process_stratum_target): Remove the target op. (class process_target): Add the target op. Also add 'supports_thread_stopped'. (target_thread_stopped): Update the macro. * target.c (process_target::thread_stopped): Define. (process_target::supports_thread_stopped): Define. (prepare_to_access_memory): Update. Update the derived structs and callers below. * server.c (queue_stop_reply_callback): Update. * linux-low.c (linux_target_ops): Update. (linux_process_target::supports_thread_stopped): Define. (linux_thread_stopped): Turn into ... (linux_process_target::thread_stopped): ... this. * linux-low.h (class linux_process_target): Update. * lynx-low.c (lynx_target_ops): Update. * nto-low.c (nto_target_ops): Update. * win32-low.c (win32_target_ops): Update. --- gdbserver/linux-low.c | 11 ++++++++--- gdbserver/linux-low.h | 4 ++++ gdbserver/lynx-low.c | 1 - gdbserver/nto-low.c | 1 - gdbserver/server.c | 4 ++-- gdbserver/target.c | 16 ++++++++++++++-- gdbserver/target.h | 13 ++++++++----- gdbserver/win32-low.c | 1 - 8 files changed, 36 insertions(+), 15 deletions(-) diff --git a/gdbserver/linux-low.c b/gdbserver/linux-low.c index 3ac40a0ad38..dc7b70b5e59 100644 --- a/gdbserver/linux-low.c +++ b/gdbserver/linux-low.c @@ -6561,8 +6561,14 @@ linux_process_target::write_pc (regcache *regcache, CORE_ADDR pc) (*the_low_target.set_pc) (regcache, pc); } -static int -linux_thread_stopped (struct thread_info *thread) +bool +linux_process_target::supports_thread_stopped () +{ + return true; +} + +bool +linux_process_target::thread_stopped (thread_info *thread) { return get_thread_lwp (thread)->stopped; } @@ -7438,7 +7444,6 @@ linux_get_hwcap2 (int wordsize) static linux_process_target the_linux_target; static process_stratum_target linux_target_ops = { - linux_thread_stopped, NULL, linux_pause_all, linux_unpause_all, diff --git a/gdbserver/linux-low.h b/gdbserver/linux-low.h index 01f21b9f29c..2c4d078ecd5 100644 --- a/gdbserver/linux-low.h +++ b/gdbserver/linux-low.h @@ -395,6 +395,10 @@ public: CORE_ADDR read_pc (regcache *regcache) override; void write_pc (regcache *regcache, CORE_ADDR pc) override; + + bool supports_thread_stopped () override; + + bool thread_stopped (thread_info *thread) override; }; #define get_thread_lwp(thr) ((struct lwp_info *) (thread_target_data (thr))) diff --git a/gdbserver/lynx-low.c b/gdbserver/lynx-low.c index 667e06fd2fd..2842036d7ca 100644 --- a/gdbserver/lynx-low.c +++ b/gdbserver/lynx-low.c @@ -735,7 +735,6 @@ static lynx_process_target the_lynx_target; /* The LynxOS target_ops vector. */ static process_stratum_target lynx_target_ops = { - NULL, /* thread_stopped */ NULL, /* get_tib_address */ NULL, /* pause_all */ NULL, /* unpause_all */ diff --git a/gdbserver/nto-low.c b/gdbserver/nto-low.c index 6a8baa08b2c..ce25e335e3b 100644 --- a/gdbserver/nto-low.c +++ b/gdbserver/nto-low.c @@ -947,7 +947,6 @@ nto_sw_breakpoint_from_kind (int kind, int *size) static nto_process_target the_nto_target; static process_stratum_target nto_target_ops = { - NULL, /* thread_stopped */ NULL, /* get_tib_address */ NULL, /* pause_all */ NULL, /* unpause_all */ diff --git a/gdbserver/server.c b/gdbserver/server.c index df307f5594c..f3dca8d3ce0 100644 --- a/gdbserver/server.c +++ b/gdbserver/server.c @@ -3217,7 +3217,7 @@ queue_stop_reply_callback (thread_info *thread) { /* For now, assume targets that don't have this callback also don't manage the thread's last_status field. */ - if (the_target->thread_stopped == NULL) + if (!the_target->pt->supports_thread_stopped ()) { struct vstop_notif *new_notif = new struct vstop_notif; @@ -3229,7 +3229,7 @@ queue_stop_reply_callback (thread_info *thread) } else { - if (thread_stopped (thread)) + if (target_thread_stopped (thread)) { if (debug_threads) { diff --git a/gdbserver/target.c b/gdbserver/target.c index 2fb13b348e4..34805ef5b88 100644 --- a/gdbserver/target.c +++ b/gdbserver/target.c @@ -66,8 +66,8 @@ prepare_to_access_memory (void) { if (mythread_alive (thread->id)) { - if (stopped == NULL && the_target->thread_stopped != NULL - && thread_stopped (thread)) + if (stopped == NULL && the_target->pt->supports_thread_stopped () + && target_thread_stopped (thread)) stopped = thread; if (first == NULL) @@ -626,3 +626,15 @@ process_target::write_pc (regcache *regcache, CORE_ADDR pc) { gdb_assert_not_reached ("regcache_write_pc: Unable to update PC"); } + +bool +process_target::supports_thread_stopped () +{ + return false; +} + +bool +process_target::thread_stopped (thread_info *thread) +{ + gdb_assert_not_reached ("target op thread_stopped not supported"); +} diff --git a/gdbserver/target.h b/gdbserver/target.h index 00b473e61dc..554bfe09af1 100644 --- a/gdbserver/target.h +++ b/gdbserver/target.h @@ -70,9 +70,6 @@ class process_target; shared code. */ struct process_stratum_target { - /* Return true if THREAD is known to be stopped now. */ - int (*thread_stopped) (struct thread_info *thread); - /* Read Thread Information Block address. */ int (*get_tib_address) (ptid_t ptid, CORE_ADDR *address); @@ -488,6 +485,12 @@ public: /* Write PC to REGCACHE. */ virtual void write_pc (regcache *regcache, CORE_ADDR pc); + + /* Return true if the thread_stopped op is supported. */ + virtual bool supports_thread_stopped (); + + /* Return true if THREAD is known to be stopped now. */ + virtual bool thread_stopped (thread_info *thread); }; extern process_stratum_target *the_target; @@ -559,8 +562,8 @@ int kill_inferior (process_info *proc); (the_target->get_min_fast_tracepoint_insn_len \ ? (*the_target->get_min_fast_tracepoint_insn_len) () : 0) -#define thread_stopped(thread) \ - (*the_target->thread_stopped) (thread) +#define target_thread_stopped(thread) \ + the_target->pt->thread_stopped (thread) #define pause_all(freeze) \ do \ diff --git a/gdbserver/win32-low.c b/gdbserver/win32-low.c index 6d5860f595f..5e9a05ac97c 100644 --- a/gdbserver/win32-low.c +++ b/gdbserver/win32-low.c @@ -1842,7 +1842,6 @@ win32_sw_breakpoint_from_kind (int kind, int *size) static win32_process_target the_win32_target; static process_stratum_target win32_target_ops = { - NULL, /* thread_stopped */ win32_get_tib_address, NULL, /* pause_all */ NULL, /* unpause_all */