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| author | Thiago Jung Bauermann <bauerman@br.ibm.com> | 2011-01-11 19:23:03 +0000 |
|---|---|---|
| committer | Thiago Jung Bauermann <bauerman@br.ibm.com> | 2011-01-11 19:23:03 +0000 |
| commit | e09342b536073e978e30460267e144063843cd17 (patch) | |
| tree | 4b5abae529e18768c8f16fcb74a528a8353e73f4 /gdb/target.h | |
| parent | 9fa40276f0a747e238e608672231ec28fa614619 (diff) | |
| download | binutils-gdb-e09342b536073e978e30460267e144063843cd17.tar.gz | |
2011-01-11 Sergio Durigan Junior <sergiodj@linux.vnet.ibm.com>
Thiago Jung Bauermann <bauerman@br.ibm.com>
Implement support for PowerPC BookE ranged watchpoints.
gdb/
* breakpoint.h
(struct breakpoint_ops) <resources_needed>: New method.
Initialize to NULL in all existing breakpoint_ops instances.
(struct breakpoint) <exact>: New field.
(target_exact_watchpoints): Declare external global.
* breakpoint.c (target_exact_watchpoints): New global flag.
(update_watchpoint): Set b->type to bp_hardware_watchpoint and
b->enable_state to bp_enabled before calling
hw_watchpoint_used_count.
(hw_watchpoint_used_count): Iterate over all bp_locations in a
watchpoint. Call breakpoint's breakpoint_ops.resources_needed
if available.
(insert_watchpoint, remove_watchpoint): Use fixed length of 1 byte
if the watchpoint is exact.
(resources_needed_watchpoint): New function.
(watchpoint_breakpoint_ops): Add resources_needed_watchpoint.
(watch_command_1): Set b->exact if the user asked for an exact
watchpoint and one can be set.
(can_use_hardware_watchpoint): Add exact_watchpoints argument.
Pass fixed length of 1 to target_region_ok_for_hw_watchpoint if
the user asks for an exact watchpoint and one can be set. Return
number of needed debug registers to watch the expression.
* gdbtypes.c (is_scalar_type): New function, based on
valprint.c:scalar_type_p.
(is_scalar_type_recursive): New function.
* gdbtypes.h (is_scalar_type_recursive): Declare.
* ppc-linux-nat.c (ppc_linux_region_ok_for_hw_watchpoint): Always
handle regions when ranged watchpoints are available.
(create_watchpoint_request): New function.
(ppc_linux_insert_watchpoint, ppc_linux_remove_watchpoint): Use
create_watchpoint_request.
* rs6000-tdep.c (show_powerpc_exact_watchpoints): New function.
(_initialize_rs6000_tdep): Add `exact-watchpoints' boolean to the
`set powerpc' and `show powerpc' commands.
* target.h (struct target_ops) <to_region_ok_for_hw_watchpoint>:
Mention documentation comment in the target macro.
(target_region_ok_for_hw_watchpoint): Document return value.
gdb/doc/
* gdb.texinfo (PowerPC Embedded): Document ranged watchpoints and
the "set powerpc exact-watchpoints" flag.
Diffstat (limited to 'gdb/target.h')
| -rw-r--r-- | gdb/target.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gdb/target.h b/gdb/target.h index 72fd211024b..d76c490f5db 100644 --- a/gdb/target.h +++ b/gdb/target.h @@ -453,7 +453,11 @@ struct target_ops int (*to_stopped_data_address) (struct target_ops *, CORE_ADDR *); int (*to_watchpoint_addr_within_range) (struct target_ops *, CORE_ADDR, CORE_ADDR, int); + + /* Documentation of this routine is provided with the corresponding + target_* macro. */ int (*to_region_ok_for_hw_watchpoint) (CORE_ADDR, int); + int (*to_can_accel_watchpoint_condition) (CORE_ADDR, int, int, struct expression *); void (*to_terminal_init) (void); @@ -1308,6 +1312,9 @@ extern char *normal_pid_to_str (ptid_t ptid); #define target_can_use_hardware_watchpoint(TYPE,CNT,OTHERTYPE) \ (*current_target.to_can_use_hw_breakpoint) (TYPE, CNT, OTHERTYPE); +/* Returns the number of debug registers needed to watch the given + memory region, or zero if not supported. */ + #define target_region_ok_for_hw_watchpoint(addr, len) \ (*current_target.to_region_ok_for_hw_watchpoint) (addr, len) |