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| author | Michael Snyder <msnyder@specifix.com> | 2008-09-30 23:36:42 +0000 |
|---|---|---|
| committer | Michael Snyder <msnyder@specifix.com> | 2008-09-30 23:36:42 +0000 |
| commit | 67fdd70acf9e26076232f4d9ea6c34d4d6391d1b (patch) | |
| tree | 9f77c0064c2e44579532946137a9551c30f3dba0 | |
| parent | a474e947a7f0d6ce93c27392ca5fae94c094ddbd (diff) | |
| download | gdb-67fdd70acf9e26076232f4d9ea6c34d4d6391d1b.tar.gz | |
2008-09-30 Michael Snyder <msnyder@vmware.com>
Target interface for reverse debugging.
* target.h (enum target_waitkind):
Add new wait event, TARGET_WAITKIND_NO_HISTORY.
(enum exec_direction_kind): New enum.
(struct target_ops): New methods to_set_execdir, to_get_execdir.
* target.c (target_get_execdir): New generic method.
(target_set_execdir): Ditto.
| -rw-r--r-- | gdb/ChangeLog | 9 | ||||
| -rw-r--r-- | gdb/target.c | 2 | ||||
| -rw-r--r-- | gdb/target.h | 31 |
3 files changed, 41 insertions, 1 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index f6d30f1c863..e543b726bc9 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,12 @@ +2008-09-30 Michael Snyder <msnyder@vmware.com> + Target interface for reverse debugging. + * target.h (enum target_waitkind): + Add new wait event, TARGET_WAITKIND_NO_HISTORY. + (enum exec_direction_kind): New enum. + (struct target_ops): New methods to_set_execdir, to_get_execdir. + * target.c (target_get_execdir): New generic method. + (target_set_execdir): Ditto. + 2008-09-30 Paul Hilfinger <hilfinger@adacore.com> * ada-lang.c (ada_modulus): Correct to avoid sign problem with diff --git a/gdb/target.c b/gdb/target.c index a509c173db7..076bb04133b 100644 --- a/gdb/target.c +++ b/gdb/target.c @@ -455,6 +455,8 @@ update_current_target (void) INHERIT (to_find_memory_regions, t); INHERIT (to_make_corefile_notes, t); INHERIT (to_get_thread_local_address, t); + INHERIT (to_get_execdir, t); + INHERIT (to_set_execdir, t); /* Do not inherit to_read_description. */ /* Do not inherit to_search_memory. */ INHERIT (to_magic, t); diff --git a/gdb/target.h b/gdb/target.h index 067c031d8c9..d14c33c0a3e 100644 --- a/gdb/target.h +++ b/gdb/target.h @@ -128,7 +128,11 @@ enum target_waitkind inferior, rather than being stuck in the remote_async_wait() function. This way the event loop is responsive to other events, like for instance the user typing. */ - TARGET_WAITKIND_IGNORE + TARGET_WAITKIND_IGNORE, + + /* The target has run out of history information, + and cannot run backward any further. */ + TARGET_WAITKIND_NO_HISTORY }; struct target_waitstatus @@ -147,6 +151,14 @@ struct target_waitstatus value; }; +/* Reverse execution. */ +enum exec_direction_kind + { + EXEC_FORWARD, + EXEC_REVERSE, + EXEC_ERROR + }; + /* Possible types of events that the inferior handler will have to deal with. */ enum inferior_event_type @@ -523,6 +535,11 @@ struct target_ops const gdb_byte *pattern, ULONGEST pattern_len, CORE_ADDR *found_addrp); + /* Set execution direction (forward/reverse). */ + int (*to_set_execdir) (enum exec_direction_kind); + /* Get execution direction (forward/reverse). */ + enum exec_direction_kind (*to_get_execdir) (void); + int to_magic; /* Need sub-structure for target machine related rather than comm related? */ @@ -1127,6 +1144,18 @@ extern int target_stopped_data_address_p (struct target_ops *); #define target_watchpoint_addr_within_range(target, addr, start, length) \ (*target.to_watchpoint_addr_within_range) (target, addr, start, length) +/* Forward/reverse execution direction. + These will only be implemented by a target that supports reverse execution. +*/ +#define target_get_execution_direction() \ + (current_target.to_get_execdir ? \ + (*current_target.to_get_execdir) () : EXEC_ERROR) + +#define target_set_execution_direction(DIR) \ + (current_target.to_set_execdir ? \ + (*current_target.to_set_execdir) (DIR) : EXEC_ERROR) + + extern const struct target_desc *target_read_description (struct target_ops *); /* Utility implementation of searching memory. */ |