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| author | Yao Qi <yao.qi@linaro.org> | 2016-07-21 12:12:18 +0100 |
|---|---|---|
| committer | Yao Qi <yao.qi@linaro.org> | 2016-07-21 12:12:18 +0100 |
| commit | 984a2c042e82f2306183d9d165c5cb99e4341503 (patch) | |
| tree | 161f243913c0be7949b06b3a8b59cd0e11745c57 | |
| parent | bec903c96bc5119e357b4ad2cab99bbee7de628e (diff) | |
| download | gdb-984a2c042e82f2306183d9d165c5cb99e4341503.zip gdb-984a2c042e82f2306183d9d165c5cb99e4341503.tar.gz gdb-984a2c042e82f2306183d9d165c5cb99e4341503.tar.bz2 | |
Switch current_thread to lwp's thread in install_software_single_step_breakpoints
install_software_single_step_breakpoints has parameter lwp, but still
need to switch to current_thread. In order to simplify its caller,
we do the current_thread save/restore inside install_software_single_step_breakpoints.
gdb/gdbserver:
2016-07-21 Yao Qi <yao.qi@linaro.org>
* gdbthread.h (make_cleanup_restore_current_thread): Declare.
* inferiors.c (do_restore_current_thread_cleanup): New function.
(make_cleanup_restore_current_thread): Likewise.
* linux-low.c (install_software_single_step_breakpoints): Call
make_cleanup_restore_current_thread. Switch current_thread to
thread.
| -rw-r--r-- | gdb/gdbserver/ChangeLog | 9 | ||||
| -rw-r--r-- | gdb/gdbserver/gdbthread.h | 3 | ||||
| -rw-r--r-- | gdb/gdbserver/inferiors.c | 12 | ||||
| -rw-r--r-- | gdb/gdbserver/linux-low.c | 8 |
4 files changed, 30 insertions, 2 deletions
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index b5e9c96..867a5a2 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,5 +1,14 @@ 2016-07-21 Yao Qi <yao.qi@linaro.org> + * gdbthread.h (make_cleanup_restore_current_thread): Declare. + * inferiors.c (do_restore_current_thread_cleanup): New function. + (make_cleanup_restore_current_thread): Likewise. + * linux-low.c (install_software_single_step_breakpoints): Call + make_cleanup_restore_current_thread. Switch current_thread to + thread. + +2016-07-21 Yao Qi <yao.qi@linaro.org> + * mem-break.c (struct reinsert_breakpoint) <ptid>: New field. (set_reinsert_breakpoint): New parameter ptid. Callers updated. (clone_one_breakpoint): Likewise. diff --git a/gdb/gdbserver/gdbthread.h b/gdb/gdbserver/gdbthread.h index 4dcb1b7..d2326fb 100644 --- a/gdb/gdbserver/gdbthread.h +++ b/gdb/gdbserver/gdbthread.h @@ -87,4 +87,7 @@ struct thread_info *find_any_thread_of_pid (int pid); /* Get current thread ID (Linux task ID). */ #define current_ptid (current_thread->entry.id) +/* Create a cleanup to restore current_thread. */ +struct cleanup *make_cleanup_restore_current_thread (void); + #endif /* GDB_THREAD_H */ diff --git a/gdb/gdbserver/inferiors.c b/gdb/gdbserver/inferiors.c index 1f5149f..7888f3c 100644 --- a/gdb/gdbserver/inferiors.c +++ b/gdb/gdbserver/inferiors.c @@ -411,3 +411,15 @@ current_process (void) gdb_assert (current_thread != NULL); return get_thread_process (current_thread); } + +static void +do_restore_current_thread_cleanup (void *arg) +{ + current_thread = (struct thread_info *) arg; +} + +struct cleanup * +make_cleanup_restore_current_thread (void) +{ + return make_cleanup (do_restore_current_thread_cleanup, current_thread); +} diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c index c0b2ac0..9c675a4 100644 --- a/gdb/gdbserver/linux-low.c +++ b/gdb/gdbserver/linux-low.c @@ -4202,10 +4202,14 @@ install_software_single_step_breakpoints (struct lwp_info *lwp) { int i; CORE_ADDR pc; - struct regcache *regcache = get_thread_regcache (current_thread, 1); + struct thread_info *thread = get_lwp_thread (lwp); + struct regcache *regcache = get_thread_regcache (thread, 1); VEC (CORE_ADDR) *next_pcs = NULL; - struct cleanup *old_chain = make_cleanup (VEC_cleanup (CORE_ADDR), &next_pcs); + struct cleanup *old_chain = make_cleanup_restore_current_thread (); + + make_cleanup (VEC_cleanup (CORE_ADDR), &next_pcs); + current_thread = thread; next_pcs = (*the_low_target.get_next_pcs) (regcache); for (i = 0; VEC_iterate (CORE_ADDR, next_pcs, i, pc); ++i) |