diff options
Diffstat (limited to 'gdb/breakpoint.c')
| -rw-r--r-- | gdb/breakpoint.c | 112 |
1 files changed, 85 insertions, 27 deletions
diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index 1158f0e..baccfb3 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -7374,6 +7374,8 @@ catch_unload_command_1 (char *arg, int from_tty, catch_load_or_unload (arg, from_tty, 0, command); } +DEF_VEC_I(int); + /* An instance of this type is used to represent a syscall catchpoint. It includes a "struct breakpoint" as a kind of base class; users downcast to "struct breakpoint *" when needed. A breakpoint is @@ -7405,6 +7407,47 @@ dtor_catch_syscall (struct breakpoint *b) base_breakpoint_ops.dtor (b); } +static const struct inferior_data *catch_syscall_inferior_data = NULL; + +struct catch_syscall_inferior_data +{ + /* We keep a count of the number of times the user has requested a + particular syscall to be tracked, and pass this information to the + target. This lets capable targets implement filtering directly. */ + + /* Number of times that "any" syscall is requested. */ + int any_syscall_count; + + /* Count of each system call. */ + VEC(int) *syscalls_counts; + + /* This counts all syscall catch requests, so we can readily determine + if any catching is necessary. */ + int total_syscalls_count; +}; + +static struct catch_syscall_inferior_data* +get_catch_syscall_inferior_data (struct inferior *inf) +{ + struct catch_syscall_inferior_data *inf_data; + + inf_data = inferior_data (inf, catch_syscall_inferior_data); + if (inf_data == NULL) + { + inf_data = XZALLOC (struct catch_syscall_inferior_data); + set_inferior_data (inf, catch_syscall_inferior_data, inf_data); + } + + return inf_data; +} + +static void +catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) +{ + xfree (arg); +} + + /* Implement the "insert" breakpoint_ops method for syscall catchpoints. */ @@ -7413,10 +7456,12 @@ insert_catch_syscall (struct bp_location *bl) { struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; struct inferior *inf = current_inferior (); + struct catch_syscall_inferior_data *inf_data + = get_catch_syscall_inferior_data (inf); - ++inf->total_syscalls_count; + ++inf_data->total_syscalls_count; if (!c->syscalls_to_be_caught) - ++inf->any_syscall_count; + ++inf_data->any_syscall_count; else { int i, iter; @@ -7427,28 +7472,31 @@ insert_catch_syscall (struct bp_location *bl) { int elem; - if (iter >= VEC_length (int, inf->syscalls_counts)) + if (iter >= VEC_length (int, inf_data->syscalls_counts)) { - int old_size = VEC_length (int, inf->syscalls_counts); + int old_size = VEC_length (int, inf_data->syscalls_counts); uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); uintptr_t vec_addr; - VEC_safe_grow (int, inf->syscalls_counts, iter + 1); - vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + - vec_addr_offset; + VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); + vec_addr = ((uintptr_t) VEC_address (int, + inf_data->syscalls_counts) + + vec_addr_offset); memset ((void *) vec_addr, 0, (iter + 1 - old_size) * sizeof (int)); } - elem = VEC_index (int, inf->syscalls_counts, iter); - VEC_replace (int, inf->syscalls_counts, iter, ++elem); + elem = VEC_index (int, inf_data->syscalls_counts, iter); + VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); } } return target_set_syscall_catchpoint (PIDGET (inferior_ptid), - inf->total_syscalls_count != 0, - inf->any_syscall_count, - VEC_length (int, inf->syscalls_counts), - VEC_address (int, inf->syscalls_counts)); + inf_data->total_syscalls_count != 0, + inf_data->any_syscall_count, + VEC_length (int, + inf_data->syscalls_counts), + VEC_address (int, + inf_data->syscalls_counts)); } /* Implement the "remove" breakpoint_ops method for syscall @@ -7459,10 +7507,12 @@ remove_catch_syscall (struct bp_location *bl) { struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; struct inferior *inf = current_inferior (); + struct catch_syscall_inferior_data *inf_data + = get_catch_syscall_inferior_data (inf); - --inf->total_syscalls_count; + --inf_data->total_syscalls_count; if (!c->syscalls_to_be_caught) - --inf->any_syscall_count; + --inf_data->any_syscall_count; else { int i, iter; @@ -7472,20 +7522,21 @@ remove_catch_syscall (struct bp_location *bl) i++) { int elem; - if (iter >= VEC_length (int, inf->syscalls_counts)) + if (iter >= VEC_length (int, inf_data->syscalls_counts)) /* Shouldn't happen. */ continue; - elem = VEC_index (int, inf->syscalls_counts, iter); - VEC_replace (int, inf->syscalls_counts, iter, --elem); + elem = VEC_index (int, inf_data->syscalls_counts, iter); + VEC_replace (int, inf_data->syscalls_counts, iter, --elem); } } return target_set_syscall_catchpoint (PIDGET (inferior_ptid), - inf->total_syscalls_count != 0, - inf->any_syscall_count, - VEC_length (int, inf->syscalls_counts), + inf_data->total_syscalls_count != 0, + inf_data->any_syscall_count, + VEC_length (int, + inf_data->syscalls_counts), VEC_address (int, - inf->syscalls_counts)); + inf_data->syscalls_counts)); } /* Implement the "breakpoint_hit" breakpoint_ops method for syscall @@ -14060,9 +14111,10 @@ is_syscall_catchpoint_enabled (struct breakpoint *bp) int catch_syscall_enabled (void) { - struct inferior *inf = current_inferior (); + struct catch_syscall_inferior_data *inf_data + = get_catch_syscall_inferior_data (current_inferior ()); - return inf->total_syscalls_count != 0; + return inf_data->total_syscalls_count != 0; } int @@ -14727,9 +14779,12 @@ add_catch_command (char *name, char *docstring, static void clear_syscall_counts (struct inferior *inf) { - inf->total_syscalls_count = 0; - inf->any_syscall_count = 0; - VEC_free (int, inf->syscalls_counts); + struct catch_syscall_inferior_data *inf_data + = get_catch_syscall_inferior_data (inf); + + inf_data->total_syscalls_count = 0; + inf_data->any_syscall_count = 0; + VEC_free (int, inf_data->syscalls_counts); } static void @@ -14982,6 +15037,9 @@ _initialize_breakpoint (void) breakpoint_objfile_key = register_objfile_data (); + catch_syscall_inferior_data + = register_inferior_data_with_cleanup (catch_syscall_inferior_data_cleanup); + breakpoint_chain = 0; /* Don't bother to call set_breakpoint_count. $bpnum isn't useful before a breakpoint is set. */ |