From 5fff78c4e0d938bb4fc1375792ffae02a134943c Mon Sep 17 00:00:00 2001 From: Markus Metzger Date: Tue, 20 May 2014 15:22:53 +0200 Subject: [PATCH] gcore, target: allow target to prepare/cleanup for/after core file generation Add new target functions to_prepare_to_generate_core and to_done_generating_core that are called before and after generating a core file, respectively. This allows targets to prepare for core file generation and to clean up afterwards. gdb/ * target.h (target_ops) : New. (target_prepare_to_generate_core, target_done_generating_core): New. * target.c (target_prepare_to_generate_core) (target_done_generating_core): New. * target-delegates.c: Regenerate. * gcore.c: (write_gcore_file): Rename to ... (write_gcore_file_1): ...this. (write_gcore_file): Call target_prepare_to_generate_core and target_done_generating_core. --- gdb/ChangeLog | 13 +++++++++++++ gdb/gcore.c | 27 ++++++++++++++++++++++----- gdb/target-delegates.c | 30 ++++++++++++++++++++++++++++++ gdb/target.c | 16 ++++++++++++++++ gdb/target.h | 14 ++++++++++++++ 5 files changed, 95 insertions(+), 5 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index a56ec40364b..bc20aeed0b5 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,16 @@ +2014-06-25 Markus Metzger + + * target.h (target_ops) + : New. + (target_prepare_to_generate_core, target_done_generating_core): New. + * target.c (target_prepare_to_generate_core) + (target_done_generating_core): New. + * target-delegates.c: Regenerate. + * gcore.c: (write_gcore_file): Rename to ... + (write_gcore_file_1): ...this. + (write_gcore_file): Call target_prepare_to_generate_core + and target_done_generating_core. + 2014-06-25 Markus Metzger * fbsd-nat.c (fbsd_make_corefile_notes): Remove make_cleanup call. diff --git a/gdb/gcore.c b/gdb/gcore.c index 5427962be08..13be346fae1 100644 --- a/gdb/gcore.c +++ b/gdb/gcore.c @@ -61,12 +61,10 @@ create_gcore_bfd (const char *filename) return obfd; } -/* write_gcore_file -- helper for gcore_command (exported). - Compose and write the corefile data to the core file. */ - +/* write_gcore_file_1 -- do the actual work of write_gcore_file. */ -void -write_gcore_file (bfd *obfd) +static void +write_gcore_file_1 (bfd *obfd) { struct cleanup *cleanup; void *note_data = NULL; @@ -111,6 +109,25 @@ write_gcore_file (bfd *obfd) do_cleanups (cleanup); } +/* write_gcore_file -- helper for gcore_command (exported). + Compose and write the corefile data to the core file. */ + +void +write_gcore_file (bfd *obfd) +{ + volatile struct gdb_exception except; + + target_prepare_to_generate_core (); + + TRY_CATCH (except, RETURN_MASK_ALL) + write_gcore_file_1 (obfd); + + target_done_generating_core (); + + if (except.reason < 0) + throw_exception (except); +} + static void do_bfd_delete_cleanup (void *arg) { diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c index 4eefae8d9b1..eaab916f7d5 100644 --- a/gdb/target-delegates.c +++ b/gdb/target-delegates.c @@ -1624,6 +1624,30 @@ delegate_decr_pc_after_break (struct target_ops *self, struct gdbarch *arg1) return self->to_decr_pc_after_break (self, arg1); } +static void +delegate_prepare_to_generate_core (struct target_ops *self) +{ + self = self->beneath; + self->to_prepare_to_generate_core (self); +} + +static void +tdefault_prepare_to_generate_core (struct target_ops *self) +{ +} + +static void +delegate_done_generating_core (struct target_ops *self) +{ + self = self->beneath; + self->to_done_generating_core (self); +} + +static void +tdefault_done_generating_core (struct target_ops *self) +{ +} + static void install_delegators (struct target_ops *ops) { @@ -1897,6 +1921,10 @@ install_delegators (struct target_ops *ops) ops->to_get_tailcall_unwinder = delegate_get_tailcall_unwinder; if (ops->to_decr_pc_after_break == NULL) ops->to_decr_pc_after_break = delegate_decr_pc_after_break; + if (ops->to_prepare_to_generate_core == NULL) + ops->to_prepare_to_generate_core = delegate_prepare_to_generate_core; + if (ops->to_done_generating_core == NULL) + ops->to_done_generating_core = delegate_done_generating_core; } static void @@ -2037,4 +2065,6 @@ install_dummy_methods (struct target_ops *ops) ops->to_get_unwinder = tdefault_get_unwinder; ops->to_get_tailcall_unwinder = tdefault_get_tailcall_unwinder; ops->to_decr_pc_after_break = default_target_decr_pc_after_break; + ops->to_prepare_to_generate_core = tdefault_prepare_to_generate_core; + ops->to_done_generating_core = tdefault_done_generating_core; } diff --git a/gdb/target.c b/gdb/target.c index 075425de5c7..f384ed0b24d 100644 --- a/gdb/target.c +++ b/gdb/target.c @@ -3606,6 +3606,22 @@ target_decr_pc_after_break (struct gdbarch *gdbarch) return current_target.to_decr_pc_after_break (¤t_target, gdbarch); } +/* See target.h. */ + +void +target_prepare_to_generate_core (void) +{ + current_target.to_prepare_to_generate_core (¤t_target); +} + +/* See target.h. */ + +void +target_done_generating_core (void) +{ + current_target.to_done_generating_core (¤t_target); +} + static void debug_to_files_info (struct target_ops *target) { diff --git a/gdb/target.h b/gdb/target.h index e563f2fbc06..96d5cb1f865 100644 --- a/gdb/target.h +++ b/gdb/target.h @@ -1109,6 +1109,14 @@ struct target_ops struct gdbarch *gdbarch) TARGET_DEFAULT_FUNC (default_target_decr_pc_after_break); + /* Prepare to generate a core file. */ + void (*to_prepare_to_generate_core) (struct target_ops *) + TARGET_DEFAULT_IGNORE (); + + /* Cleanup after generating a core file. */ + void (*to_done_generating_core) (struct target_ops *) + TARGET_DEFAULT_IGNORE (); + int to_magic; /* Need sub-structure for target machine related rather than comm related? */ @@ -2261,4 +2269,10 @@ extern CORE_ADDR forward_target_decr_pc_after_break (struct target_ops *ops, /* See to_decr_pc_after_break. */ extern CORE_ADDR target_decr_pc_after_break (struct gdbarch *gdbarch); +/* See to_prepare_to_generate_core. */ +extern void target_prepare_to_generate_core (void); + +/* See to_done_generating_core. */ +extern void target_done_generating_core (void); + #endif /* !defined (TARGET_H) */ -- 2.30.2