/* Everything about breakpoints, for GDB.
- Copyright (C) 1986-2014 Free Software Foundation, Inc.
+ Copyright (C) 1986-2015 Free Software Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "command.h"
#include "inferior.h"
+#include "infrun.h"
#include "gdbthread.h"
#include "target.h"
#include "language.h"
-#include <string.h>
#include "gdb-demangle.h"
#include "filenames.h"
#include "annotate.h"
#include "gdb.h"
#include "ui-out.h"
#include "cli/cli-script.h"
-#include "gdb_assert.h"
#include "block.h"
#include "solib.h"
#include "solist.h"
#include "observer.h"
-#include "exceptions.h"
#include "memattr.h"
#include "ada-lang.h"
#include "top.h"
#include "valprint.h"
#include "jit.h"
-#include "xml-syscall.h"
#include "parser-defs.h"
#include "gdb_regex.h"
#include "probe.h"
#include "skip.h"
#include "ax-gdb.h"
#include "dummy-frame.h"
-
+#include "interps.h"
#include "format.h"
+#include "location.h"
+#include "thread-fsm.h"
/* readline include files */
#include "readline/readline.h"
#undef savestring
#include "mi/mi-common.h"
-#include "python/python.h"
+#include "extension.h"
/* Enums for exception-handling support. */
enum exception_event_kind
static void breakpoint_re_set_default (struct breakpoint *);
-static void create_sals_from_address_default (char **,
- struct linespec_result *,
- enum bptype, char *,
- char **);
+static void
+ create_sals_from_location_default (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted);
static void create_breakpoints_sal_default (struct gdbarch *,
struct linespec_result *,
const struct breakpoint_ops *,
int, int, int, unsigned);
-static void decode_linespec_default (struct breakpoint *, char **,
- struct symtabs_and_lines *);
+static void decode_location_default (struct breakpoint *b,
+ const struct event_location *location,
+ struct symtabs_and_lines *sals);
static void clear_command (char *, int);
static struct breakpoint *
momentary_breakpoint_from_master (struct breakpoint *orig,
enum bptype type,
- const struct breakpoint_ops *ops);
+ const struct breakpoint_ops *ops,
+ int loc_enabled);
static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int);
struct program_space *, CORE_ADDR,
struct obj_section *, int);
-static int breakpoint_address_match (struct address_space *aspace1,
- CORE_ADDR addr1,
- struct address_space *aspace2,
- CORE_ADDR addr2);
-
static int watchpoint_locations_match (struct bp_location *loc1,
struct bp_location *loc2);
struct address_space *aspace,
CORE_ADDR addr);
+static int breakpoint_location_address_range_overlap (struct bp_location *,
+ struct address_space *,
+ CORE_ADDR, int);
+
static void breakpoints_info (char *, int);
static void watchpoints_info (char *, int);
static void tcatch_command (char *arg, int from_tty);
-static void detach_single_step_breakpoints (void);
-
-static int single_step_breakpoint_inserted_here_p (struct address_space *,
- CORE_ADDR pc);
-
static void free_bp_location (struct bp_location *loc);
static void incref_bp_location (struct bp_location *loc);
static void decref_bp_location (struct bp_location **loc);
static struct bp_location *allocate_bp_location (struct breakpoint *bpt);
-static void update_global_location_list (int);
+/* update_global_location_list's modes of operation wrt to whether to
+ insert locations now. */
+enum ugll_insert_mode
+{
+ /* Don't insert any breakpoint locations into the inferior, only
+ remove already-inserted locations that no longer should be
+ inserted. Functions that delete a breakpoint or breakpoints
+ should specify this mode, so that deleting a breakpoint doesn't
+ have the side effect of inserting the locations of other
+ breakpoints that are marked not-inserted, but should_be_inserted
+ returns true on them.
+
+ This behavior is useful is situations close to tear-down -- e.g.,
+ after an exec, while the target still has execution, but
+ breakpoint shadows of the previous executable image should *NOT*
+ be restored to the new image; or before detaching, where the
+ target still has execution and wants to delete breakpoints from
+ GDB's lists, and all breakpoints had already been removed from
+ the inferior. */
+ UGLL_DONT_INSERT,
+
+ /* May insert breakpoints iff breakpoints_should_be_inserted_now
+ claims breakpoints should be inserted now. */
+ UGLL_MAY_INSERT,
+
+ /* Insert locations now, irrespective of
+ breakpoints_should_be_inserted_now. E.g., say all threads are
+ stopped right now, and the user did "continue". We need to
+ insert breakpoints _before_ resuming the target, but
+ UGLL_MAY_INSERT wouldn't insert them, because
+ breakpoints_should_be_inserted_now returns false at that point,
+ as no thread is running yet. */
+ UGLL_INSERT
+};
+
+static void update_global_location_list (enum ugll_insert_mode);
-static void update_global_location_list_nothrow (int);
+static void update_global_location_list_nothrow (enum ugll_insert_mode);
static int is_hardware_watchpoint (const struct breakpoint *bpt);
static void insert_breakpoint_locations (void);
-static int syscall_catchpoint_p (struct breakpoint *b);
-
static void tracepoints_info (char *, int);
static void delete_trace_command (char *, int);
static int strace_marker_p (struct breakpoint *b);
-/* The abstract base class all breakpoint_ops structures inherit
- from. */
-struct breakpoint_ops base_breakpoint_ops;
-
/* The breakpoint_ops structure to be inherited by all breakpoint_ops
that are implemented on top of software or hardware breakpoints
(user breakpoints, internal and momentary breakpoints, etc.). */
value);
}
-/* If on, gdb will keep breakpoints inserted even as inferior is
- stopped, and immediately insert any new breakpoints. If off, gdb
- will insert breakpoints into inferior only when resuming it, and
- will remove breakpoints upon stop. If auto, GDB will behave as ON
- if in non-stop mode, and as OFF if all-stop mode.*/
-
-static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO;
+/* If on, GDB keeps breakpoints inserted even if the inferior is
+ stopped, and immediately inserts any new breakpoints as soon as
+ they're created. If off (default), GDB keeps breakpoints off of
+ the target as long as possible. That is, it delays inserting
+ breakpoints until the next resume, and removes them again when the
+ target fully stops. This is a bit safer in case GDB crashes while
+ processing user input. */
+static int always_inserted_mode = 0;
static void
show_always_inserted_mode (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
- if (always_inserted_mode == AUTO_BOOLEAN_AUTO)
- fprintf_filtered (file,
- _("Always inserted breakpoint "
- "mode is %s (currently %s).\n"),
- value,
- breakpoints_always_inserted_mode () ? "on" : "off");
- else
- fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"),
- value);
+ fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"),
+ value);
}
+/* See breakpoint.h. */
+
int
-breakpoints_always_inserted_mode (void)
+breakpoints_should_be_inserted_now (void)
{
- return (always_inserted_mode == AUTO_BOOLEAN_TRUE
- || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop));
+ if (gdbarch_has_global_breakpoints (target_gdbarch ()))
+ {
+ /* If breakpoints are global, they should be inserted even if no
+ thread under gdb's control is running, or even if there are
+ no threads under GDB's control yet. */
+ return 1;
+ }
+ else if (target_has_execution)
+ {
+ struct thread_info *tp;
+
+ if (always_inserted_mode)
+ {
+ /* The user wants breakpoints inserted even if all threads
+ are stopped. */
+ return 1;
+ }
+
+ if (threads_are_executing ())
+ return 1;
+
+ /* Don't remove breakpoints yet if, even though all threads are
+ stopped, we still have events to process. */
+ ALL_NON_EXITED_THREADS (tp)
+ if (tp->resumed
+ && tp->suspend.waitstatus_pending_p)
+ return 1;
+ }
+ return 0;
}
static const char condition_evaluation_both[] = "host or target";
static struct cmd_list_element *breakpoint_show_cmdlist;
struct cmd_list_element *save_cmdlist;
+/* See declaration at breakpoint.h. */
+
+struct breakpoint *
+breakpoint_find_if (int (*func) (struct breakpoint *b, void *d),
+ void *user_data)
+{
+ struct breakpoint *b = NULL;
+
+ ALL_BREAKPOINTS (b)
+ {
+ if (func (b, user_data) != 0)
+ break;
+ }
+
+ return b;
+}
+
/* Return whether a breakpoint is an active enabled breakpoint. */
static int
breakpoint_enabled (struct breakpoint *b)
static struct counted_command_line *
alloc_counted_command_line (struct command_line *commands)
{
- struct counted_command_line *result
- = xmalloc (sizeof (struct counted_command_line));
+ struct counted_command_line *result = XNEW (struct counted_command_line);
result->refc = 1;
result->commands = commands;
+
return result;
}
static void
do_cleanup_counted_command_line (void *arg)
{
- decref_counted_command_line (arg);
+ decref_counted_command_line ((struct counted_command_line **) arg);
}
/* Create a cleanup that calls decref_counted_command_line on the
}
/* Do the update. */
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
}
return;
static int
bp_location_compare_addrs (const void *ap, const void *bp)
{
- struct bp_location *a = *(void **) ap;
- struct bp_location *b = *(void **) bp;
+ const struct bp_location *a = *(const struct bp_location **) ap;
+ const struct bp_location *b = *(const struct bp_location **) bp;
if (a->address == b->address)
return 0;
dummy_loc.address = address;
/* Find a close match to the first location at ADDRESS. */
- locp_found = bsearch (&dummy_locp, bp_location, bp_location_count,
- sizeof (struct bp_location **),
- bp_location_compare_addrs);
+ locp_found = ((struct bp_location **)
+ bsearch (&dummy_locp, bp_location, bp_location_count,
+ sizeof (struct bp_location **),
+ bp_location_compare_addrs));
/* Nothing was found, nothing left to do. */
if (locp_found == NULL)
}
void
-set_breakpoint_condition (struct breakpoint *b, char *exp,
+set_breakpoint_condition (struct breakpoint *b, const char *exp,
int from_tty)
{
xfree (b->cond_string);
ALL_BREAKPOINTS (b)
if (b->number == bnum)
{
- /* Check if this breakpoint has a Python object assigned to
- it, and if it has a definition of the "stop"
- method. This method and conditions entered into GDB from
- the CLI are mutually exclusive. */
- if (b->py_bp_object
- && gdbpy_breakpoint_has_py_cond (b->py_bp_object))
- error (_("Cannot set a condition where a Python 'stop' "
- "method has been defined in the breakpoint."));
+ /* Check if this breakpoint has a "stop" method implemented in an
+ extension language. This method and conditions entered into GDB
+ from the CLI are mutually exclusive. */
+ const struct extension_language_defn *extlang
+ = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE);
+
+ if (extlang != NULL)
+ {
+ error (_("Only one stop condition allowed. There is currently"
+ " a %s stop condition defined for this breakpoint."),
+ ext_lang_capitalized_name (extlang));
+ }
set_breakpoint_condition (b, p, from_tty);
if (is_breakpoint (b))
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
return;
}
void
check_tracepoint_command (char *line, void *closure)
{
- struct breakpoint *b = closure;
+ struct breakpoint *b = (struct breakpoint *) closure;
validate_actionline (line, b);
}
static void
do_map_commands_command (struct breakpoint *b, void *data)
{
- struct commands_info *info = data;
+ struct commands_info *info = (struct commands_info *) data;
if (info->cmd == NULL)
{
return 1;
}
+/* Update BUF, which is LEN bytes read from the target address
+ MEMADDR, by replacing a memory breakpoint with its shadowed
+ contents.
+
+ If READBUF is not NULL, this buffer must not overlap with the of
+ the breakpoint location's shadow_contents buffer. Otherwise, a
+ failed assertion internal error will be raised. */
+
+static void
+one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
+ const gdb_byte *writebuf_org,
+ ULONGEST memaddr, LONGEST len,
+ struct bp_target_info *target_info,
+ struct gdbarch *gdbarch)
+{
+ /* Now do full processing of the found relevant range of elements. */
+ CORE_ADDR bp_addr = 0;
+ int bp_size = 0;
+ int bptoffset = 0;
+
+ if (!breakpoint_address_match (target_info->placed_address_space, 0,
+ current_program_space->aspace, 0))
+ {
+ /* The breakpoint is inserted in a different address space. */
+ return;
+ }
+
+ /* Addresses and length of the part of the breakpoint that
+ we need to copy. */
+ bp_addr = target_info->placed_address;
+ bp_size = target_info->shadow_len;
+
+ if (bp_addr + bp_size <= memaddr)
+ {
+ /* The breakpoint is entirely before the chunk of memory we are
+ reading. */
+ return;
+ }
+
+ if (bp_addr >= memaddr + len)
+ {
+ /* The breakpoint is entirely after the chunk of memory we are
+ reading. */
+ return;
+ }
+
+ /* Offset within shadow_contents. */
+ if (bp_addr < memaddr)
+ {
+ /* Only copy the second part of the breakpoint. */
+ bp_size -= memaddr - bp_addr;
+ bptoffset = memaddr - bp_addr;
+ bp_addr = memaddr;
+ }
+
+ if (bp_addr + bp_size > memaddr + len)
+ {
+ /* Only copy the first part of the breakpoint. */
+ bp_size -= (bp_addr + bp_size) - (memaddr + len);
+ }
+
+ if (readbuf != NULL)
+ {
+ /* Verify that the readbuf buffer does not overlap with the
+ shadow_contents buffer. */
+ gdb_assert (target_info->shadow_contents >= readbuf + len
+ || readbuf >= (target_info->shadow_contents
+ + target_info->shadow_len));
+
+ /* Update the read buffer with this inserted breakpoint's
+ shadow. */
+ memcpy (readbuf + bp_addr - memaddr,
+ target_info->shadow_contents + bptoffset, bp_size);
+ }
+ else
+ {
+ const unsigned char *bp;
+ CORE_ADDR addr = target_info->reqstd_address;
+ int placed_size;
+
+ /* Update the shadow with what we want to write to memory. */
+ memcpy (target_info->shadow_contents + bptoffset,
+ writebuf_org + bp_addr - memaddr, bp_size);
+
+ /* Determine appropriate breakpoint contents and size for this
+ address. */
+ bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size);
+
+ /* Update the final write buffer with this inserted
+ breakpoint's INSN. */
+ memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size);
+ }
+}
+
/* Update BUF, which is LEN bytes read from the target address MEMADDR,
by replacing any memory breakpoints with their shadowed contents.
/* Left boundary, right boundary and median element of our binary
search. */
unsigned bc_l, bc_r, bc;
+ size_t i;
/* Find BC_L which is a leftmost element which may affect BUF
content. It is safe to report lower value but a failure to
if (!bp_location_has_shadow (bl))
continue;
- if (!breakpoint_address_match (bl->target_info.placed_address_space, 0,
- current_program_space->aspace, 0))
- continue;
-
- /* Addresses and length of the part of the breakpoint that
- we need to copy. */
- bp_addr = bl->target_info.placed_address;
- bp_size = bl->target_info.shadow_len;
-
- if (bp_addr + bp_size <= memaddr)
- /* The breakpoint is entirely before the chunk of memory we
- are reading. */
- continue;
-
- if (bp_addr >= memaddr + len)
- /* The breakpoint is entirely after the chunk of memory we are
- reading. */
- continue;
- /* Offset within shadow_contents. */
- if (bp_addr < memaddr)
- {
- /* Only copy the second part of the breakpoint. */
- bp_size -= memaddr - bp_addr;
- bptoffset = memaddr - bp_addr;
- bp_addr = memaddr;
- }
-
- if (bp_addr + bp_size > memaddr + len)
- {
- /* Only copy the first part of the breakpoint. */
- bp_size -= (bp_addr + bp_size) - (memaddr + len);
- }
-
- if (readbuf != NULL)
- {
- /* Verify that the readbuf buffer does not overlap with
- the shadow_contents buffer. */
- gdb_assert (bl->target_info.shadow_contents >= readbuf + len
- || readbuf >= (bl->target_info.shadow_contents
- + bl->target_info.shadow_len));
-
- /* Update the read buffer with this inserted breakpoint's
- shadow. */
- memcpy (readbuf + bp_addr - memaddr,
- bl->target_info.shadow_contents + bptoffset, bp_size);
- }
- else
- {
- struct gdbarch *gdbarch = bl->gdbarch;
- const unsigned char *bp;
- CORE_ADDR placed_address = bl->target_info.placed_address;
- int placed_size = bl->target_info.placed_size;
-
- /* Update the shadow with what we want to write to memory. */
- memcpy (bl->target_info.shadow_contents + bptoffset,
- writebuf_org + bp_addr - memaddr, bp_size);
-
- /* Determine appropriate breakpoint contents and size for this
- address. */
- bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size);
-
- /* Update the final write buffer with this inserted
- breakpoint's INSN. */
- memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size);
- }
+ one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org,
+ memaddr, len, &bl->target_info, bl->gdbarch);
}
}
+
\f
/* Return true if BPT is either a software breakpoint or a hardware
b->disposition = disp_del_at_next_stop;
}
+/* Extract a bitfield value from value VAL using the bit parameters contained in
+ watchpoint W. */
+
+static struct value *
+extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val)
+{
+ struct value *bit_val;
+
+ if (val == NULL)
+ return NULL;
+
+ bit_val = allocate_value (value_type (val));
+
+ unpack_value_bitfield (bit_val,
+ w->val_bitpos,
+ w->val_bitsize,
+ value_contents_for_printing (val),
+ value_offset (val),
+ val);
+
+ return bit_val;
+}
+
/* Assuming that B is a watchpoint:
- Reparse watchpoint expression, if REPARSE is non-zero
- Evaluate expression and store the result in B->val
struct gdbarch *frame_arch = get_frame_arch (fi);
CORE_ADDR frame_pc = get_frame_pc (fi);
- /* If we're in a function epilogue, unwinding may not work
- properly, so do not attempt to recreate locations at this
+ /* If we're at a point where the stack has been destroyed
+ (e.g. in a function epilogue), unwinding may not work
+ properly. Do not attempt to recreate locations at this
point. See similar comments in watchpoint_check. */
- if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
+ if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc))
return;
/* Save the current frame's ID so we can restore it after
watchpoints. */
if (!b->val_valid && !is_masked_watchpoint (&b->base))
{
+ if (b->val_bitsize != 0)
+ {
+ v = extract_bitfield_from_watchpoint_value (b, v);
+ if (v != NULL)
+ release_value (v);
+ }
b->val = v;
b->val_valid = 1;
}
&& TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
{
CORE_ADDR addr;
- int type;
+ enum target_hw_bp_type type;
struct bp_location *loc, **tmp;
+ int bitpos = 0, bitsize = 0;
+
+ if (value_bitsize (v) != 0)
+ {
+ /* Extract the bit parameters out from the bitfield
+ sub-expression. */
+ bitpos = value_bitpos (v);
+ bitsize = value_bitsize (v);
+ }
+ else if (v == result && b->val_bitsize != 0)
+ {
+ /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield
+ lvalue whose bit parameters are saved in the fields
+ VAL_BITPOS and VAL_BITSIZE. */
+ bitpos = b->val_bitpos;
+ bitsize = b->val_bitsize;
+ }
addr = value_address (v);
+ if (bitsize != 0)
+ {
+ /* Skip the bytes that don't contain the bitfield. */
+ addr += bitpos / 8;
+ }
+
type = hw_write;
if (b->base.type == bp_read_watchpoint)
type = hw_read;
loc->pspace = frame_pspace;
loc->address = addr;
- loc->length = TYPE_LENGTH (value_type (v));
+
+ if (bitsize != 0)
+ {
+ /* Just cover the bytes that make up the bitfield. */
+ loc->length = ((bitpos % 8) + bitsize + 7) / 8;
+ }
+ else
+ loc->length = TYPE_LENGTH (value_type (v));
+
loc->watchpoint_type = type;
}
}
if (bl->pspace->breakpoints_not_allowed)
return 0;
+ /* Don't insert a breakpoint if we're trying to step past its
+ location. */
+ if ((bl->loc_type == bp_loc_software_breakpoint
+ || bl->loc_type == bp_loc_hardware_breakpoint)
+ && stepping_past_instruction_at (bl->pspace->aspace,
+ bl->address))
+ {
+ if (debug_infrun)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: skipping breakpoint: "
+ "stepping past insn at: %s\n",
+ paddress (bl->gdbarch, bl->address));
+ }
+ return 0;
+ }
+
+ /* Don't insert watchpoints if we're trying to step past the
+ instruction that triggered one. */
+ if ((bl->loc_type == bp_loc_hardware_watchpoint)
+ && stepping_past_nonsteppable_watchpoint ())
+ {
+ if (debug_infrun)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: stepping past non-steppable watchpoint. "
+ "skipping watchpoint at %s:%d\n",
+ paddress (bl->gdbarch, bl->address),
+ bl->length);
+ }
+ return 0;
+ }
+
return 1;
}
parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond)
{
struct agent_expr *aexpr = NULL;
- volatile struct gdb_exception ex;
if (!cond)
return NULL;
/* We don't want to stop processing, so catch any errors
that may show up. */
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
aexpr = gen_eval_for_expr (scope, cond);
}
- if (ex.reason < 0)
+ CATCH (ex, RETURN_MASK_ERROR)
{
/* If we got here, it means the condition could not be parsed to a valid
bytecode expression and thus can't be evaluated on the target's side.
It's no use iterating through the conditions. */
return NULL;
}
+ END_CATCH
/* We have a valid agent expression. */
return aexpr;
struct cleanup *old_cleanups = 0;
struct expression *expr, **argvec;
struct agent_expr *aexpr = NULL;
- volatile struct gdb_exception ex;
const char *cmdrest;
const char *format_start, *format_end;
struct format_piece *fpieces;
/* We don't want to stop processing, so catch any errors
that may show up. */
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
aexpr = gen_printf (scope, gdbarch, 0, 0,
format_start, format_end - format_start,
fpieces, nargs, argvec);
}
-
- do_cleanups (old_cleanups);
-
- if (ex.reason < 0)
+ CATCH (ex, RETURN_MASK_ERROR)
{
/* If we got here, it means the command could not be parsed to a valid
bytecode expression and thus can't be evaluated on the target's side.
It's no use iterating through the other commands. */
- return NULL;
+ aexpr = NULL;
}
+ END_CATCH
+
+ do_cleanups (old_cleanups);
/* We have a valid agent expression, return it. */
return aexpr;
/* Release commands left over from a previous insert. */
VEC_free (agent_expr_p, bl->target_info.tcommands);
- /* For now, limit to agent-style dprintf breakpoints. */
- if (bl->owner->type != bp_dprintf
- || strcmp (dprintf_style, dprintf_style_agent) != 0)
+ if (!target_can_run_breakpoint_commands ())
return;
- if (!target_can_run_breakpoint_commands ())
+ /* For now, limit to agent-style dprintf breakpoints. */
+ if (dprintf_style != dprintf_style_agent)
return;
+ /* For now, if we have any duplicate location that isn't a dprintf,
+ don't install the target-side commands, as that would make the
+ breakpoint not be reported to the core, and we'd lose
+ control. */
+ ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
+ {
+ loc = (*loc2p);
+ if (is_breakpoint (loc->owner)
+ && loc->pspace->num == bl->pspace->num
+ && loc->owner->type != bp_dprintf)
+ return;
+ }
+
/* Do a first pass to check for locations with no assigned
conditions or conditions that fail to parse to a valid agent expression
bytecode. If any of these happen, then it's no use to send conditions
{
enum errors bp_err = GDB_NO_ERROR;
const char *bp_err_message = NULL;
- volatile struct gdb_exception e;
if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update))
return 0;
we have a breakpoint inserted at that address and thus
read the breakpoint instead of returning the data saved in
the breakpoint location's shadow contents. */
- bl->target_info.placed_address = bl->address;
+ bl->target_info.reqstd_address = bl->address;
bl->target_info.placed_address_space = bl->pspace->aspace;
bl->target_info.length = bl->length;
program, but it's not going to work anyway with current
gdb. */
struct mem_region *mr
- = lookup_mem_region (bl->target_info.placed_address);
+ = lookup_mem_region (bl->target_info.reqstd_address);
if (mr)
{
}
}
else if (bl->loc_type == bp_loc_software_breakpoint
- && mr->attrib.mode != MEM_RW)
- warning (_("cannot set software breakpoint "
- "at readonly address %s"),
- paddress (bl->gdbarch, bl->address));
+ && mr->attrib.mode != MEM_RW)
+ {
+ fprintf_unfiltered (tmp_error_stream,
+ _("Cannot insert breakpoint %d.\n"
+ "Cannot set software breakpoint "
+ "at read-only address %s\n"),
+ bl->owner->number,
+ paddress (bl->gdbarch, bl->address));
+ return 1;
+ }
}
}
|| !(section_is_overlay (bl->section)))
{
/* No overlay handling: just set the breakpoint. */
- TRY_CATCH (e, RETURN_MASK_ALL)
+ TRY
{
int val;
if (val)
bp_err = GENERIC_ERROR;
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ALL)
{
bp_err = e.error;
bp_err_message = e.message;
}
+ END_CATCH
}
else
{
bl->section);
/* Set a software (trap) breakpoint at the LMA. */
bl->overlay_target_info = bl->target_info;
- bl->overlay_target_info.placed_address = addr;
+ bl->overlay_target_info.reqstd_address = addr;
/* No overlay handling: just set the breakpoint. */
- TRY_CATCH (e, RETURN_MASK_ALL)
+ TRY
{
int val;
if (val)
bp_err = GENERIC_ERROR;
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ALL)
{
bp_err = e.error;
bp_err_message = e.message;
}
+ END_CATCH
if (bp_err != GDB_NO_ERROR)
fprintf_unfiltered (tmp_error_stream,
if (section_is_mapped (bl->section))
{
/* Yes. This overlay section is mapped into memory. */
- TRY_CATCH (e, RETURN_MASK_ALL)
+ TRY
{
int val;
if (val)
bp_err = GENERIC_ERROR;
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ALL)
{
bp_err = e.error;
bp_err_message = e.message;
}
+ END_CATCH
}
else
{
breakpoint in a shared library that has already been
removed, but we have not yet processed the shlib unload
event. Unfortunately, some targets that implement
- breakpoint insertion themselves (necessary if this is a
- HW breakpoint, but SW breakpoints likewise) can't tell
- why the breakpoint insertion failed (e.g., the remote
- target doesn't define error codes), so we must treat
- generic errors as memory errors. */
+ breakpoint insertion themselves can't tell why the
+ breakpoint insertion failed (e.g., the remote target
+ doesn't define error codes), so we must treat generic
+ errors as memory errors. */
if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR)
- && solib_name_from_address (bl->pspace, bl->address))
+ && bl->loc_type == bp_loc_software_breakpoint
+ && (solib_name_from_address (bl->pspace, bl->address)
+ || shared_objfile_contains_address_p (bl->pspace,
+ bl->address)))
{
/* See also: disable_breakpoints_in_shlibs. */
bl->shlib_disabled = 1;
/* Now update the global location list to permanently delete the
removed locations above. */
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
}
/* Make sure all breakpoints are inserted in inferior.
update_watchpoint (w, 0 /* don't reparse. */);
}
- update_global_location_list (1);
-
- /* update_global_location_list does not insert breakpoints when
- always_inserted_mode is not enabled. Explicitly insert them
- now. */
- if (!breakpoints_always_inserted_mode ())
- insert_breakpoint_locations ();
+ /* Updating watchpoints creates new locations, so update the global
+ location list. Explicitly tell ugll to insert locations and
+ ignore breakpoints_always_inserted_mode. */
+ update_global_location_list (UGLL_INSERT);
}
/* Invoke CALLBACK for each of bp_location. */
if (bl->pspace != inf->pspace)
continue;
- if (bl->owner->type == bp_dprintf)
- continue;
-
- if (bl->inserted)
+ if (bl->inserted && !bl->target_info.persist)
{
val = remove_breakpoint (bl, mark_uninserted);
if (val != 0)
struct breakpoint_objfile_data
{
/* Minimal symbol for "_ovly_debug_event" (if any). */
- struct minimal_symbol *overlay_msym;
+ struct bound_minimal_symbol overlay_msym;
/* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */
- struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES];
+ struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES];
/* True if we have looked for longjmp probes. */
int longjmp_searched;
VEC (probe_p) *longjmp_probes;
/* Minimal symbol for "std::terminate()" (if any). */
- struct minimal_symbol *terminate_msym;
+ struct bound_minimal_symbol terminate_msym;
/* Minimal symbol for "_Unwind_DebugHook" (if any). */
- struct minimal_symbol *exception_msym;
+ struct bound_minimal_symbol exception_msym;
/* True if we have looked for exception probes. */
int exception_searched;
{
struct breakpoint_objfile_data *bp_objfile_data;
- bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key);
+ bp_objfile_data = ((struct breakpoint_objfile_data *)
+ objfile_data (objfile, breakpoint_objfile_key));
if (bp_objfile_data == NULL)
{
- bp_objfile_data = obstack_alloc (&objfile->objfile_obstack,
- sizeof (*bp_objfile_data));
+ bp_objfile_data =
+ XOBNEW (&objfile->objfile_obstack, struct breakpoint_objfile_data);
memset (bp_objfile_data, 0, sizeof (*bp_objfile_data));
set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data);
static void
free_breakpoint_probes (struct objfile *obj, void *data)
{
- struct breakpoint_objfile_data *bp_objfile_data = data;
+ struct breakpoint_objfile_data *bp_objfile_data
+ = (struct breakpoint_objfile_data *) data;
VEC_free (probe_p, bp_objfile_data->longjmp_probes);
VEC_free (probe_p, bp_objfile_data->exception_probes);
struct breakpoint *b;
struct breakpoint_objfile_data *bp_objfile_data;
CORE_ADDR addr;
+ struct explicit_location explicit_loc;
bp_objfile_data = get_breakpoint_objfile_data (objfile);
- if (msym_not_found_p (bp_objfile_data->overlay_msym))
+ if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym))
continue;
- if (bp_objfile_data->overlay_msym == NULL)
+ if (bp_objfile_data->overlay_msym.minsym == NULL)
{
- struct minimal_symbol *m;
+ struct bound_minimal_symbol m;
m = lookup_minimal_symbol_text (func_name, objfile);
- if (m == NULL)
+ if (m.minsym == NULL)
{
/* Avoid future lookups in this objfile. */
- bp_objfile_data->overlay_msym = &msym_not_found;
+ bp_objfile_data->overlay_msym.minsym = &msym_not_found;
continue;
}
bp_objfile_data->overlay_msym = m;
}
- addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym);
+ addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym);
b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
bp_overlay_event,
&internal_breakpoint_ops);
- b->addr_string = xstrdup (func_name);
+ initialize_explicit_location (&explicit_loc);
+ explicit_loc.function_name = ASTRDUP (func_name);
+ b->location = new_explicit_location (&explicit_loc);
if (overlay_debugging == ovly_auto)
{
overlay_events_enabled = 0;
}
}
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
}
static void
{
struct breakpoint *b;
- b = create_internal_breakpoint (gdbarch, probe->address,
+ b = create_internal_breakpoint (gdbarch,
+ get_probe_address (probe,
+ objfile),
bp_longjmp_master,
&internal_breakpoint_ops);
- b->addr_string = xstrdup ("-probe-stap libc:longjmp");
+ b->location
+ = new_probe_location ("-probe-stap libc:longjmp");
b->enable_state = bp_disabled;
}
struct breakpoint *b;
const char *func_name;
CORE_ADDR addr;
+ struct explicit_location explicit_loc;
- if (msym_not_found_p (bp_objfile_data->longjmp_msym[i]))
+ if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym))
continue;
func_name = longjmp_names[i];
- if (bp_objfile_data->longjmp_msym[i] == NULL)
+ if (bp_objfile_data->longjmp_msym[i].minsym == NULL)
{
- struct minimal_symbol *m;
+ struct bound_minimal_symbol m;
m = lookup_minimal_symbol_text (func_name, objfile);
- if (m == NULL)
+ if (m.minsym == NULL)
{
/* Prevent future lookups in this objfile. */
- bp_objfile_data->longjmp_msym[i] = &msym_not_found;
+ bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found;
continue;
}
bp_objfile_data->longjmp_msym[i] = m;
}
- addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]);
+ addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]);
b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master,
&internal_breakpoint_ops);
- b->addr_string = xstrdup (func_name);
+ initialize_explicit_location (&explicit_loc);
+ explicit_loc.function_name = ASTRDUP (func_name);
+ b->location = new_explicit_location (&explicit_loc);
b->enable_state = bp_disabled;
}
}
}
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
do_cleanups (old_chain);
}
{
struct breakpoint *b;
struct breakpoint_objfile_data *bp_objfile_data;
+ struct explicit_location explicit_loc;
bp_objfile_data = get_breakpoint_objfile_data (objfile);
- if (msym_not_found_p (bp_objfile_data->terminate_msym))
+ if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym))
continue;
- if (bp_objfile_data->terminate_msym == NULL)
+ if (bp_objfile_data->terminate_msym.minsym == NULL)
{
- struct minimal_symbol *m;
+ struct bound_minimal_symbol m;
m = lookup_minimal_symbol (func_name, NULL, objfile);
- if (m == NULL || (MSYMBOL_TYPE (m) != mst_text
- && MSYMBOL_TYPE (m) != mst_file_text))
+ if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text
+ && MSYMBOL_TYPE (m.minsym) != mst_file_text))
{
/* Prevent future lookups in this objfile. */
- bp_objfile_data->terminate_msym = &msym_not_found;
+ bp_objfile_data->terminate_msym.minsym = &msym_not_found;
continue;
}
bp_objfile_data->terminate_msym = m;
}
- addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym);
+ addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym);
b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
bp_std_terminate_master,
&internal_breakpoint_ops);
- b->addr_string = xstrdup (func_name);
+ initialize_explicit_location (&explicit_loc);
+ explicit_loc.function_name = ASTRDUP (func_name);
+ b->location = new_explicit_location (&explicit_loc);
b->enable_state = bp_disabled;
}
}
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
do_cleanups (old_chain);
}
struct gdbarch *gdbarch;
struct breakpoint_objfile_data *bp_objfile_data;
CORE_ADDR addr;
+ struct explicit_location explicit_loc;
bp_objfile_data = get_breakpoint_objfile_data (objfile);
{
struct breakpoint *b;
- b = create_internal_breakpoint (gdbarch, probe->address,
+ b = create_internal_breakpoint (gdbarch,
+ get_probe_address (probe,
+ objfile),
bp_exception_master,
&internal_breakpoint_ops);
- b->addr_string = xstrdup ("-probe-stap libgcc:unwind");
+ b->location
+ = new_probe_location ("-probe-stap libgcc:unwind");
b->enable_state = bp_disabled;
}
/* Otherwise, try the hook function. */
- if (msym_not_found_p (bp_objfile_data->exception_msym))
+ if (msym_not_found_p (bp_objfile_data->exception_msym.minsym))
continue;
gdbarch = get_objfile_arch (objfile);
- if (bp_objfile_data->exception_msym == NULL)
+ if (bp_objfile_data->exception_msym.minsym == NULL)
{
- struct minimal_symbol *debug_hook;
+ struct bound_minimal_symbol debug_hook;
debug_hook = lookup_minimal_symbol (func_name, NULL, objfile);
- if (debug_hook == NULL)
+ if (debug_hook.minsym == NULL)
{
- bp_objfile_data->exception_msym = &msym_not_found;
+ bp_objfile_data->exception_msym.minsym = &msym_not_found;
continue;
}
bp_objfile_data->exception_msym = debug_hook;
}
- addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym);
+ addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym);
addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
¤t_target);
b = create_internal_breakpoint (gdbarch, addr, bp_exception_master,
&internal_breakpoint_ops);
- b->addr_string = xstrdup (func_name);
+ initialize_explicit_location (&explicit_loc);
+ explicit_loc.function_name = ASTRDUP (func_name);
+ b->location = new_explicit_location (&explicit_loc);
b->enable_state = bp_disabled;
}
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
}
void
continue;
}
+ /* Just like single-step breakpoints. */
+ if (b->type == bp_single_step)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+
/* Longjmp and longjmp-resume breakpoints are also meaningless
after an exec. */
if (b->type == bp_longjmp || b->type == bp_longjmp_resume
/* Without a symbolic address, we have little hope of the
pre-exec() address meaning the same thing in the post-exec()
a.out. */
- if (b->addr_string == NULL)
+ if (event_location_empty_p (b->location))
{
delete_breakpoint (b);
continue;
}
}
- /* FIXME what about longjmp breakpoints? Re-create them here? */
- create_overlay_event_breakpoint ();
- create_longjmp_master_breakpoint ();
- create_std_terminate_master_breakpoint ();
- create_exception_master_breakpoint ();
}
int
val |= remove_breakpoint_1 (bl, mark_inserted);
}
- /* Detach single-step breakpoints as well. */
- detach_single_step_breakpoints ();
-
do_cleanups (old_chain);
return val;
}
/* BL is never in moribund_locations by our callers. */
gdb_assert (bl->owner != NULL);
- if (bl->owner->enable_state == bp_permanent)
- /* Permanent breakpoints cannot be inserted or removed. */
- return 0;
-
/* The type of none suggests that owner is actually deleted.
This should not ever happen. */
gdb_assert (bl->owner->type != bp_none);
|| !(section_is_overlay (bl->section)))
{
/* No overlay handling: just remove the breakpoint. */
- val = bl->owner->ops->remove_location (bl);
+
+ /* If we're trying to uninsert a memory breakpoint that we
+ know is set in a dynamic object that is marked
+ shlib_disabled, then either the dynamic object was
+ removed with "remove-symbol-file" or with
+ "nosharedlibrary". In the former case, we don't know
+ whether another dynamic object might have loaded over the
+ breakpoint's address -- the user might well let us know
+ about it next with add-symbol-file (the whole point of
+ add-symbol-file is letting the user manually maintain a
+ list of dynamically loaded objects). If we have the
+ breakpoint's shadow memory, that is, this is a software
+ breakpoint managed by GDB, check whether the breakpoint
+ is still inserted in memory, to avoid overwriting wrong
+ code with stale saved shadow contents. Note that HW
+ breakpoints don't have shadow memory, as they're
+ implemented using a mechanism that is not dependent on
+ being able to modify the target's memory, and as such
+ they should always be removed. */
+ if (bl->shlib_disabled
+ && bl->target_info.shadow_len != 0
+ && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info))
+ val = 0;
+ else
+ val = bl->owner->ops->remove_location (bl);
}
else
{
}
}
- /* In some cases, we might not be able to remove a breakpoint
- in a shared library that has already been removed, but we
- have not yet processed the shlib unload event. */
- if (val && solib_name_from_address (bl->pspace, bl->address))
+ /* In some cases, we might not be able to remove a breakpoint in
+ a shared library that has already been removed, but we have
+ not yet processed the shlib unload event. Similarly for an
+ unloaded add-symbol-file object - the user might not yet have
+ had the chance to remove-symbol-file it. shlib_disabled will
+ be set if the library/object has already been removed, but
+ the breakpoint hasn't been uninserted yet, e.g., after
+ "nosharedlibrary" or "remove-symbol-file" with breakpoints
+ always-inserted mode. */
+ if (val
+ && (bl->loc_type == bp_loc_software_breakpoint
+ && (bl->shlib_disabled
+ || solib_name_from_address (bl->pspace, bl->address)
+ || shared_objfile_contains_address_p (bl->pspace,
+ bl->address))))
val = 0;
if (val)
/* BL is never in moribund_locations by our callers. */
gdb_assert (bl->owner != NULL);
- if (bl->owner->enable_state == bp_permanent)
- /* Permanent breakpoints cannot be inserted or removed. */
- return 0;
-
/* The type of none suggests that owner is actually deleted.
This should not ever happen. */
gdb_assert (bl->owner->type != bp_none);
if (gdbarch_has_global_breakpoints (target_gdbarch ()))
return;
- ALL_BP_LOCATIONS (bl, blp_tmp)
- {
- /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */
- if (bl->pspace == pspace
- && bl->owner->enable_state != bp_permanent)
- bl->inserted = 0;
- }
+ mark_breakpoints_out ();
ALL_BREAKPOINTS_SAFE (b, b_tmp)
{
/* Also remove step-resume breakpoints. */
+ case bp_single_step:
+
+ /* Also remove single-step breakpoints. */
+
delete_breakpoint (b);
break;
/* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */
if ((breakpoint_enabled (bl->owner)
- || bl->owner->enable_state == bp_permanent)
+ || bl->permanent)
&& breakpoint_location_address_match (bl, aspace, pc))
{
if (overlay_debugging
&& section_is_overlay (bl->section)
&& !section_is_mapped (bl->section))
continue; /* unmapped overlay -- can't be a match */
- else if (bl->owner->enable_state == bp_permanent)
+ else if (bl->permanent)
return permanent_breakpoint_here;
else
any_breakpoint_here = 1;
}
}
- return any_breakpoint_here ? ordinary_breakpoint_here : 0;
+ return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here;
+}
+
+/* See breakpoint.h. */
+
+int
+breakpoint_in_range_p (struct address_space *aspace,
+ CORE_ADDR addr, ULONGEST len)
+{
+ struct bp_location *bl, **blp_tmp;
+
+ ALL_BP_LOCATIONS (bl, blp_tmp)
+ {
+ if (bl->loc_type != bp_loc_software_breakpoint
+ && bl->loc_type != bp_loc_hardware_breakpoint)
+ continue;
+
+ if ((breakpoint_enabled (bl->owner)
+ || bl->permanent)
+ && breakpoint_location_address_range_overlap (bl, aspace,
+ addr, len))
+ {
+ if (overlay_debugging
+ && section_is_overlay (bl->section)
+ && !section_is_mapped (bl->section))
+ {
+ /* Unmapped overlay -- can't be a match. */
+ continue;
+ }
+
+ return 1;
+ }
+ }
+
+ return 0;
}
/* Return true if there's a moribund breakpoint at PC. */
return 0;
}
-/* Returns non-zero if there's a breakpoint inserted at PC, which is
- inserted using regular breakpoint_chain / bp_location array
- mechanism. This does not check for single-step breakpoints, which
- are inserted and removed using direct target manipulation. */
+/* Returns non-zero iff BL is inserted at PC, in address space
+ ASPACE. */
-int
-regular_breakpoint_inserted_here_p (struct address_space *aspace,
- CORE_ADDR pc)
+static int
+bp_location_inserted_here_p (struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR pc)
{
- struct bp_location *bl, **blp_tmp;
-
- ALL_BP_LOCATIONS (bl, blp_tmp)
+ if (bl->inserted
+ && breakpoint_address_match (bl->pspace->aspace, bl->address,
+ aspace, pc))
{
- if (bl->loc_type != bp_loc_software_breakpoint
- && bl->loc_type != bp_loc_hardware_breakpoint)
- continue;
-
- if (bl->inserted
- && breakpoint_location_address_match (bl, aspace, pc))
- {
- if (overlay_debugging
- && section_is_overlay (bl->section)
- && !section_is_mapped (bl->section))
- continue; /* unmapped overlay -- can't be a match */
- else
- return 1;
- }
+ if (overlay_debugging
+ && section_is_overlay (bl->section)
+ && !section_is_mapped (bl->section))
+ return 0; /* unmapped overlay -- can't be a match */
+ else
+ return 1;
}
return 0;
}
-/* Returns non-zero iff there's either regular breakpoint
- or a single step breakpoint inserted at PC. */
+/* Returns non-zero iff there's a breakpoint inserted at PC. */
int
breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc)
{
- if (regular_breakpoint_inserted_here_p (aspace, pc))
- return 1;
+ struct bp_location **blp, **blp_tmp = NULL;
+ struct bp_location *bl;
- if (single_step_breakpoint_inserted_here_p (aspace, pc))
- return 1;
+ ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
+ {
+ struct bp_location *bl = *blp;
+
+ if (bl->loc_type != bp_loc_software_breakpoint
+ && bl->loc_type != bp_loc_hardware_breakpoint)
+ continue;
+ if (bp_location_inserted_here_p (bl, aspace, pc))
+ return 1;
+ }
return 0;
}
software_breakpoint_inserted_here_p (struct address_space *aspace,
CORE_ADDR pc)
{
- struct bp_location *bl, **blp_tmp;
+ struct bp_location **blp, **blp_tmp = NULL;
+ struct bp_location *bl;
- ALL_BP_LOCATIONS (bl, blp_tmp)
+ ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
{
+ struct bp_location *bl = *blp;
+
if (bl->loc_type != bp_loc_software_breakpoint)
continue;
- if (bl->inserted
- && breakpoint_address_match (bl->pspace->aspace, bl->address,
- aspace, pc))
- {
- if (overlay_debugging
- && section_is_overlay (bl->section)
- && !section_is_mapped (bl->section))
- continue; /* unmapped overlay -- can't be a match */
- else
- return 1;
- }
+ if (bp_location_inserted_here_p (bl, aspace, pc))
+ return 1;
}
- /* Also check for software single-step breakpoints. */
- if (single_step_breakpoint_inserted_here_p (aspace, pc))
- return 1;
+ return 0;
+}
+
+/* See breakpoint.h. */
+
+int
+hardware_breakpoint_inserted_here_p (struct address_space *aspace,
+ CORE_ADDR pc)
+{
+ struct bp_location **blp, **blp_tmp = NULL;
+ struct bp_location *bl;
+
+ ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
+ {
+ struct bp_location *bl = *blp;
+
+ if (bl->loc_type != bp_loc_hardware_breakpoint)
+ continue;
+
+ if (bp_location_inserted_here_p (bl, aspace, pc))
+ return 1;
+ }
return 0;
}
}
return 0;
}
-
-/* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at
- PC is valid for process/thread PTID. */
-
-int
-breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc,
- ptid_t ptid)
-{
- struct bp_location *bl, **blp_tmp;
- /* The thread and task IDs associated to PTID, computed lazily. */
- int thread = -1;
- int task = 0;
-
- ALL_BP_LOCATIONS (bl, blp_tmp)
- {
- if (bl->loc_type != bp_loc_software_breakpoint
- && bl->loc_type != bp_loc_hardware_breakpoint)
- continue;
-
- /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */
- if (!breakpoint_enabled (bl->owner)
- && bl->owner->enable_state != bp_permanent)
- continue;
-
- if (!breakpoint_location_address_match (bl, aspace, pc))
- continue;
-
- if (bl->owner->thread != -1)
- {
- /* This is a thread-specific breakpoint. Check that ptid
- matches that thread. If thread hasn't been computed yet,
- it is now time to do so. */
- if (thread == -1)
- thread = pid_to_thread_id (ptid);
- if (bl->owner->thread != thread)
- continue;
- }
-
- if (bl->owner->task != 0)
- {
- /* This is a task-specific breakpoint. Check that ptid
- matches that task. If task hasn't been computed yet,
- it is now time to do so. */
- if (task == 0)
- task = ada_get_task_number (ptid);
- if (bl->owner->task != task)
- continue;
- }
-
- if (overlay_debugging
- && section_is_overlay (bl->section)
- && !section_is_mapped (bl->section))
- continue; /* unmapped overlay -- can't be a match */
-
- return 1;
- }
-
- return 0;
-}
\f
/* bpstat stuff. External routines' interfaces are documented
static int
command_line_is_silent (struct command_line *cmd)
{
- return cmd && (strcmp ("silent", cmd->line) == 0
- || (xdb_commands && strcmp ("Q", cmd->line) == 0));
+ return cmd && (strcmp ("silent", cmd->line) == 0);
}
/* Execute all the commands associated with all the breakpoints at
if (breakpoint_proceeded)
{
- if (target_can_async_p ())
+ if (interpreter_async)
/* If we are in async mode, then the target might be still
running, not stopped at any breakpoint, so nothing for
us to do here -- just return to the event loop. */
enum print_stop_action
bpstat_print (bpstat bs, int kind)
{
- int val;
+ enum print_stop_action val;
/* Maybe another breakpoint in the chain caused us to stop.
(Currently all watchpoints go on the bpstat whether hit or not.
struct gdbarch *frame_arch = get_frame_arch (frame);
CORE_ADDR frame_pc = get_frame_pc (frame);
- /* in_function_epilogue_p() returns a non-zero value if we're
+ /* stack_frame_destroyed_p() returns a non-zero value if we're
still in the function but the stack frame has already been
invalidated. Since we can't rely on the values of local
variables after the stack has been destroyed, we are treating
frame is in an epilogue - even if they are in some other
frame, our view of the stack is likely to be wrong and
frame_find_by_id could error out. */
- if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc))
+ if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc))
return WP_IGNORE;
fr = frame_find_by_id (b->watchpoint_frame);
mark = value_mark ();
fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL, 0);
+ if (b->val_bitsize != 0)
+ new_val = extract_bitfield_from_watchpoint_value (b, new_val);
+
/* We use value_equal_contents instead of value_equal because
the latter coerces an array to a pointer, thus comparing just
the address of the array instead of its contents. This is
static void
bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid)
{
- int thread_id = pid_to_thread_id (ptid);
const struct bp_location *bl;
struct breakpoint *b;
int value_is_zero = 0;
return;
}
- /* If this is a thread-specific breakpoint, don't waste cpu evaluating the
- condition if this isn't the specified thread. */
- if (b->thread != -1 && b->thread != thread_id)
+ /* If this is a thread/task-specific breakpoint, don't waste cpu
+ evaluating the condition if this isn't the specified
+ thread/task. */
+ if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid))
+ || (b->task != 0 && b->task != ada_get_task_number (ptid)))
+
{
bs->stop = 0;
return;
}
- /* Evaluate Python breakpoints that have a "stop" method implemented. */
- if (b->py_bp_object)
- bs->stop = gdbpy_should_stop (b->py_bp_object);
+ /* Evaluate extension language breakpoints that have a "stop" method
+ implemented. */
+ bs->stop = breakpoint_ext_lang_cond_says_stop (b);
if (is_watchpoint (b))
{
}
}
+/* Returns true if we need to track moribund locations of LOC's type
+ on the current target. */
+
+static int
+need_moribund_for_location_type (struct bp_location *loc)
+{
+ return ((loc->loc_type == bp_loc_software_breakpoint
+ && !target_supports_stopped_by_sw_breakpoint ())
+ || (loc->loc_type == bp_loc_hardware_breakpoint
+ && !target_supports_stopped_by_hw_breakpoint ()));
+}
+
/* Get a bpstat associated with having just stopped at address
BP_ADDR in thread PTID.
ALL_BREAKPOINTS (b)
{
- if (!breakpoint_enabled (b) && b->enable_state != bp_permanent)
+ if (!breakpoint_enabled (b))
continue;
for (bl = b->loc; bl != NULL; bl = bl->next)
}
}
- for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
+ /* Check if a moribund breakpoint explains the stop. */
+ if (!target_supports_stopped_by_sw_breakpoint ()
+ || !target_supports_stopped_by_hw_breakpoint ())
{
- if (breakpoint_location_address_match (loc, aspace, bp_addr))
+ for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
{
- bs = bpstat_alloc (loc, &bs_link);
- /* For hits of moribund locations, we should just proceed. */
- bs->stop = 0;
- bs->print = 0;
- bs->print_it = print_it_noop;
+ if (breakpoint_location_address_match (loc, aspace, bp_addr)
+ && need_moribund_for_location_type (loc))
+ {
+ bs = bpstat_alloc (loc, &bs_link);
+ /* For hits of moribund locations, we should just proceed. */
+ bs->stop = 0;
+ bs->print = 0;
+ bs->print_it = print_it_noop;
+ }
}
}
if (b->disposition == disp_disable)
{
--(b->enable_count);
- if (b->enable_count <= 0
- && b->enable_state != bp_permanent)
+ if (b->enable_count <= 0)
b->enable_state = bp_disabled;
removed_any = 1;
}
}
if (need_remove_insert)
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
else if (removed_any)
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
return bs_head;
}
struct frame_info *frame;
struct gdbarch *gdbarch;
+ if (debug_infrun)
+ fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n");
+
/* Switch terminal for any messages produced by
breakpoint_re_set. */
target_terminal_ours_for_output ();
break;
case bp_breakpoint:
case bp_hardware_breakpoint:
+ case bp_single_step:
case bp_until:
case bp_finish:
case bp_shlib_event:
case bp_longjmp:
case bp_longjmp_call_dummy:
case bp_exception:
- this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME;
- retval.is_longjmp = bptype != bp_exception;
+ if (bs->stop)
+ {
+ this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME;
+ retval.is_longjmp = bptype != bp_exception;
+ }
+ else
+ this_action = BPSTAT_WHAT_SINGLE;
break;
case bp_longjmp_resume:
case bp_exception_resume:
- this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME;
- retval.is_longjmp = bptype == bp_longjmp_resume;
+ if (bs->stop)
+ {
+ this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME;
+ retval.is_longjmp = bptype == bp_longjmp_resume;
+ }
+ else
+ this_action = BPSTAT_WHAT_SINGLE;
break;
case bp_step_resume:
if (bs->stop)
retval.main_action = max (retval.main_action, this_action);
}
- /* These operations may affect the bs->breakpoint_at state so they are
- delayed after MAIN_ACTION is decided above. */
-
- if (jit_event)
- {
- if (debug_infrun)
- fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n");
+ return retval;
+}
- handle_jit_event ();
- }
+void
+bpstat_run_callbacks (bpstat bs_head)
+{
+ bpstat bs;
for (bs = bs_head; bs != NULL; bs = bs->next)
{
continue;
switch (b->type)
{
+ case bp_jit_event:
+ handle_jit_event ();
+ break;
case bp_gnu_ifunc_resolver:
gnu_ifunc_resolver_stop (b);
break;
break;
}
}
-
- return retval;
}
/* Nonzero if we should step constantly (e.g. watchpoints on machines
set_current_program_space (loc->pspace);
if (b->display_canonical)
- ui_out_field_string (uiout, "what", b->addr_string);
+ ui_out_field_string (uiout, "what",
+ event_location_to_string (b->location));
else if (loc && loc->symtab)
{
struct symbol *sym
do_cleanups (stb_chain);
}
else
- ui_out_field_string (uiout, "pending", b->addr_string);
+ {
+ ui_out_field_string (uiout, "pending",
+ event_location_to_string (b->location));
+ /* If extra_string is available, it could be holding a condition
+ or dprintf arguments. In either case, make sure it is printed,
+ too, but only for non-MI streams. */
+ if (!ui_out_is_mi_like_p (uiout) && b->extra_string != NULL)
+ {
+ if (b->type == bp_dprintf)
+ ui_out_text (uiout, ",");
+ else
+ ui_out_text (uiout, " ");
+ ui_out_text (uiout, b->extra_string);
+ }
+ }
if (loc && is_breakpoint (b)
&& breakpoint_condition_evaluation_mode () == condition_evaluation_target
{bp_none, "?deleted?"},
{bp_breakpoint, "breakpoint"},
{bp_hardware_breakpoint, "hw breakpoint"},
+ {bp_single_step, "sw single-step"},
{bp_until, "until"},
{bp_finish, "finish"},
{bp_watchpoint, "watchpoint"},
case bp_breakpoint:
case bp_hardware_breakpoint:
+ case bp_single_step:
case bp_until:
case bp_finish:
case bp_longjmp:
ui_out_field_string (uiout, "original-location", w->exp_string);
}
- else if (b->addr_string)
- ui_out_field_string (uiout, "original-location", b->addr_string);
+ else if (b->location != NULL
+ && event_location_to_string (b->location) != NULL)
+ ui_out_field_string (uiout, "original-location",
+ event_location_to_string (b->location));
}
}
static int
do_captured_breakpoint_query (struct ui_out *uiout, void *data)
{
- struct captured_breakpoint_query_args *args = data;
+ struct captured_breakpoint_query_args *args
+ = (struct captured_breakpoint_query_args *) data;
struct breakpoint *b;
struct bp_location *dummy_loc = NULL;
((b->enable_state == bp_disabled
|| b->enable_state == bp_call_disabled)
? " (disabled)"
- : b->enable_state == bp_permanent
- ? " (permanent)"
: ""),
(others > 1) ? ","
: ((others == 1) ? " and" : ""));
\f
/* Return true iff it is meaningful to use the address member of
- BPT. For some breakpoint types, the address member is irrelevant
- and it makes no sense to attempt to compare it to other addresses
- (or use it for any other purpose either).
+ BPT locations. For some breakpoint types, the locations' address members
+ are irrelevant and it makes no sense to attempt to compare them to other
+ addresses (or use them for any other purpose either).
More specifically, each of the following breakpoint types will
- always have a zero valued address and we don't want to mark
+ always have a zero valued location address and we don't want to mark
breakpoints of any of these types to be a duplicate of an actual
- breakpoint at address zero:
+ breakpoint location at address zero:
bp_watchpoint
bp_catchpoint
&& loc1->length == loc2->length);
}
-/* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the
- same breakpoint location. In most targets, this can only be true
- if ASPACE1 matches ASPACE2. On targets that have global
- breakpoints, the address space doesn't really matter. */
+/* See breakpoint.h. */
-static int
+int
breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1,
struct address_space *aspace2, CORE_ADDR addr2)
{
aspace, addr)));
}
+/* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps
+ breakpoint BL. BL may be a ranged breakpoint. In most targets, a
+ match happens only if ASPACE matches the breakpoint's address
+ space. On targets that have global breakpoints, the address space
+ doesn't really matter. */
+
+static int
+breakpoint_location_address_range_overlap (struct bp_location *bl,
+ struct address_space *aspace,
+ CORE_ADDR addr, int len)
+{
+ if (gdbarch_has_global_breakpoints (target_gdbarch ())
+ || bl->pspace->aspace == aspace)
+ {
+ int bl_len = bl->length != 0 ? bl->length : 1;
+
+ if (mem_ranges_overlap (addr, len, bl->address, bl_len))
+ return 1;
+ }
+ return 0;
+}
+
/* If LOC1 and LOC2's owners are not tracepoints, returns false directly.
Then, if LOC1 and LOC2 represent the same tracepoint location, returns
true, otherwise returns false. */
have their addresses modified. */
return bpaddr;
}
+ else if (bptype == bp_single_step)
+ {
+ /* Single-step breakpoints should not have their addresses
+ modified. If there's any architectural constrain that
+ applies to this address, then it should have already been
+ taken into account when the breakpoint was created in the
+ first place. If we didn't do this, stepping through e.g.,
+ Thumb-2 IT blocks would break. */
+ return bpaddr;
+ }
else
{
CORE_ADDR adjusted_bpaddr;
switch (owner->type)
{
case bp_breakpoint:
+ case bp_single_step:
case bp_until:
case bp_finish:
case bp_longjmp:
b->condition_not_parsed = 0;
b->py_bp_object = NULL;
b->related_breakpoint = b;
+ b->location = NULL;
}
/* Helper to set_raw_breakpoint below. Creates a breakpoint
if (sal.section)
return get_objfile_arch (sal.section->objfile);
if (sal.symtab)
- return get_objfile_arch (sal.symtab->objfile);
+ return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));
return NULL;
}
return b;
}
-
-/* Note that the breakpoint object B describes a permanent breakpoint
- instruction, hard-wired into the inferior's code. */
-void
-make_breakpoint_permanent (struct breakpoint *b)
-{
- struct bp_location *bl;
-
- b->enable_state = bp_permanent;
-
- /* By definition, permanent breakpoints are already present in the
- code. Mark all locations as inserted. For now,
- make_breakpoint_permanent is called in just one place, so it's
- hard to say if it's reasonable to have permanent breakpoint with
- multiple locations or not, but it's easy to implement. */
- for (bl = b->loc; bl; bl = bl->next)
- bl->inserted = 1;
-}
-
/* Call this routine when stepping and nexting to enable a breakpoint
if we do a longjmp() or 'throw' in TP. FRAME is the frame which
initiated the operation. */
/* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again
after their removal. */
clone = momentary_breakpoint_from_master (b, type,
- &longjmp_breakpoint_ops);
+ &longjmp_breakpoint_ops, 1);
clone->thread = thread;
}
struct breakpoint *new_b;
new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy,
- &momentary_breakpoint_ops);
+ &momentary_breakpoint_ops,
+ 1);
new_b->thread = pid_to_thread_id (inferior_ptid);
/* Link NEW_B into the chain of RETVAL breakpoints. */
}
/* Verify all existing dummy frames and their associated breakpoints for
- THREAD. Remove those which can no longer be found in the current frame
+ TP. Remove those which can no longer be found in the current frame
stack.
You should call this function only at places where it is safe to currently
frames. */
void
-check_longjmp_breakpoint_for_call_dummy (int thread)
+check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp)
{
struct breakpoint *b, *b_tmp;
ALL_BREAKPOINTS_SAFE (b, b_tmp)
- if (b->type == bp_longjmp_call_dummy && b->thread == thread)
+ if (b->type == bp_longjmp_call_dummy && b->thread == tp->num)
{
struct breakpoint *dummy_b = b->related_breakpoint;
|| frame_find_by_id (dummy_b->frame_id) != NULL)
continue;
- dummy_frame_discard (dummy_b->frame_id);
+ dummy_frame_discard (dummy_b->frame_id, tp->ptid);
while (b->related_breakpoint != b)
{
if (b->type == bp_overlay_event)
{
b->enable_state = bp_enabled;
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
overlay_events_enabled = 1;
}
}
if (b->type == bp_overlay_event)
{
b->enable_state = bp_disabled;
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
overlay_events_enabled = 0;
}
}
&& b->type == bp_std_terminate_master)
{
momentary_breakpoint_from_master (b, bp_std_terminate,
- &momentary_breakpoint_ops);
+ &momentary_breakpoint_ops, 1);
}
}
&internal_breakpoint_ops);
b->enable_state = bp_enabled;
- /* addr_string has to be used or breakpoint_re_set will delete me. */
- b->addr_string
- = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address));
+ /* location has to be used or breakpoint_re_set will delete me. */
+ b->location = new_address_location (b->loc->address);
- update_global_location_list_nothrow (1);
+ update_global_location_list_nothrow (UGLL_MAY_INSERT);
return b;
}
b = create_internal_breakpoint (gdbarch, address, bp_jit_event,
&internal_breakpoint_ops);
- update_global_location_list_nothrow (1);
+ update_global_location_list_nothrow (UGLL_MAY_INSERT);
return b;
}
delete_breakpoint (b);
}
-struct breakpoint *
-create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
+/* See breakpoint.h. */
+
+void
+remove_solib_event_breakpoints_at_next_stop (void)
+{
+ struct breakpoint *b, *b_tmp;
+
+ ALL_BREAKPOINTS_SAFE (b, b_tmp)
+ if (b->type == bp_shlib_event
+ && b->loc->pspace == current_program_space)
+ b->disposition = disp_del_at_next_stop;
+}
+
+/* Helper for create_solib_event_breakpoint /
+ create_and_insert_solib_event_breakpoint. Allows specifying which
+ INSERT_MODE to pass through to update_global_location_list. */
+
+static struct breakpoint *
+create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address,
+ enum ugll_insert_mode insert_mode)
{
struct breakpoint *b;
b = create_internal_breakpoint (gdbarch, address, bp_shlib_event,
&internal_breakpoint_ops);
- update_global_location_list_nothrow (1);
+ update_global_location_list_nothrow (insert_mode);
+ return b;
+}
+
+struct breakpoint *
+create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
+{
+ return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT);
+}
+
+/* See breakpoint.h. */
+
+struct breakpoint *
+create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
+{
+ struct breakpoint *b;
+
+ /* Explicitly tell update_global_location_list to insert
+ locations. */
+ b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT);
+ if (!b->loc->inserted)
+ {
+ delete_breakpoint (b);
+ return NULL;
+ }
return b;
}
if (objfile == NULL)
return;
- /* If the file is a shared library not loaded by the user then
- solib_unloaded was notified and disable_breakpoints_in_unloaded_shlib
- was called. In that case there is no need to take action again. */
- if ((objfile->flags & OBJF_SHARED) && !(objfile->flags & OBJF_USERLOADED))
+ /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually
+ managed by the user with add-symbol-file/remove-symbol-file.
+ Similarly to how breakpoints in shared libraries are handled in
+ response to "nosharedlibrary", mark breakpoints in such modules
+ shlib_disabled so they end up uninserted on the next global
+ location list update. Shared libraries not loaded by the user
+ aren't handled here -- they're already handled in
+ disable_breakpoints_in_unloaded_shlib, called by solib.c's
+ solib_unloaded observer. We skip objfiles that are not
+ OBJF_SHARED as those aren't considered dynamic objects (e.g. the
+ main objfile). */
+ if ((objfile->flags & OBJF_SHARED) == 0
+ || (objfile->flags & OBJF_USERLOADED) == 0)
return;
ALL_BREAKPOINTS (b)
if (is_addr_in_objfile (loc_addr, objfile))
{
loc->shlib_disabled = 1;
- loc->inserted = 0;
+ /* At this point, we don't know whether the object was
+ unmapped from the inferior or not, so leave the
+ inserted flag alone. We'll handle failure to
+ uninsert quietly, in case the object was indeed
+ unmapped. */
mark_breakpoint_location_modified (loc);
catch_load_or_unload (arg, from_tty, 0, command);
}
-/* 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
- really of this type iff its ops pointer points to
- CATCH_SYSCALL_BREAKPOINT_OPS. */
+/* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG
+ is non-zero, then make the breakpoint temporary. If COND_STRING is
+ not NULL, then store it in the breakpoint. OPS, if not NULL, is
+ the breakpoint_ops structure associated to the catchpoint. */
-struct syscall_catchpoint
+void
+init_catchpoint (struct breakpoint *b,
+ struct gdbarch *gdbarch, int tempflag,
+ char *cond_string,
+ const struct breakpoint_ops *ops)
{
- /* The base class. */
- struct breakpoint base;
+ struct symtab_and_line sal;
- /* Syscall numbers used for the 'catch syscall' feature. If no
- syscall has been specified for filtering, its value is NULL.
- Otherwise, it holds a list of all syscalls to be caught. The
- list elements are allocated with xmalloc. */
- VEC(int) *syscalls_to_be_caught;
-};
+ init_sal (&sal);
+ sal.pspace = current_program_space;
-/* Implement the "dtor" breakpoint_ops method for syscall
- catchpoints. */
+ init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops);
-static void
-dtor_catch_syscall (struct breakpoint *b)
-{
- struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
+ b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string);
+ b->disposition = tempflag ? disp_del : disp_donttouch;
+}
- VEC_free (int, c->syscalls_to_be_caught);
+void
+install_breakpoint (int internal, struct breakpoint *b, int update_gll)
+{
+ add_to_breakpoint_chain (b);
+ set_breakpoint_number (internal, b);
+ if (is_tracepoint (b))
+ set_tracepoint_count (breakpoint_count);
+ if (!internal)
+ mention (b);
+ observer_notify_breakpoint_created (b);
- base_breakpoint_ops.dtor (b);
+ if (update_gll)
+ update_global_location_list (UGLL_MAY_INSERT);
}
-static const struct inferior_data *catch_syscall_inferior_data = NULL;
-
-struct catch_syscall_inferior_data
+static void
+create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch,
+ int tempflag, char *cond_string,
+ const struct breakpoint_ops *ops)
{
- /* 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;
+ struct fork_catchpoint *c = XNEW (struct fork_catchpoint);
- /* Count of each system call. */
- VEC(int) *syscalls_counts;
+ init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops);
- /* This counts all syscall catch requests, so we can readily determine
- if any catching is necessary. */
- int total_syscalls_count;
-};
+ c->forked_inferior_pid = null_ptid;
-static struct catch_syscall_inferior_data*
-get_catch_syscall_inferior_data (struct inferior *inf)
-{
- struct catch_syscall_inferior_data *inf_data;
+ install_breakpoint (0, &c->base, 1);
+}
- inf_data = inferior_data (inf, catch_syscall_inferior_data);
- if (inf_data == NULL)
- {
- inf_data = XCNEW (struct catch_syscall_inferior_data);
- set_inferior_data (inf, catch_syscall_inferior_data, inf_data);
- }
+/* Exec catchpoints. */
- return inf_data;
-}
+/* An instance of this type is used to represent an exec catchpoint.
+ It includes a "struct breakpoint" as a kind of base class; users
+ downcast to "struct breakpoint *" when needed. A breakpoint is
+ really of this type iff its ops pointer points to
+ CATCH_EXEC_BREAKPOINT_OPS. */
-static void
-catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg)
+struct exec_catchpoint
{
- xfree (arg);
-}
+ /* The base class. */
+ struct breakpoint base;
+ /* Filename of a program whose exec triggered this catchpoint.
+ This field is only valid immediately after this catchpoint has
+ triggered. */
+ char *exec_pathname;
+};
-/* Implement the "insert" breakpoint_ops method for syscall
+/* Implement the "dtor" breakpoint_ops method for exec
catchpoints. */
-static int
-insert_catch_syscall (struct bp_location *bl)
+static void
+dtor_catch_exec (struct breakpoint *b)
{
- 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_data->total_syscalls_count;
- if (!c->syscalls_to_be_caught)
- ++inf_data->any_syscall_count;
- else
- {
- int i, iter;
-
- for (i = 0;
- VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
- i++)
- {
- int elem;
+ struct exec_catchpoint *c = (struct exec_catchpoint *) b;
- if (iter >= VEC_length (int, inf_data->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_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_data->syscalls_counts, iter);
- VEC_replace (int, inf_data->syscalls_counts, iter, ++elem);
- }
- }
+ xfree (c->exec_pathname);
- return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid),
- 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));
+ base_breakpoint_ops.dtor (b);
}
-/* Implement the "remove" breakpoint_ops method for syscall
- catchpoints. */
-
static int
-remove_catch_syscall (struct bp_location *bl)
+insert_catch_exec (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_data->total_syscalls_count;
- if (!c->syscalls_to_be_caught)
- --inf_data->any_syscall_count;
- else
- {
- int i, iter;
-
- for (i = 0;
- VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
- i++)
- {
- int elem;
- if (iter >= VEC_length (int, inf_data->syscalls_counts))
- /* Shouldn't happen. */
- continue;
- elem = VEC_index (int, inf_data->syscalls_counts, iter);
- VEC_replace (int, inf_data->syscalls_counts, iter, --elem);
- }
- }
-
- return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid),
- 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 "breakpoint_hit" breakpoint_ops method for syscall
- catchpoints. */
-
-static int
-breakpoint_hit_catch_syscall (const struct bp_location *bl,
- struct address_space *aspace, CORE_ADDR bp_addr,
- const struct target_waitstatus *ws)
-{
- /* We must check if we are catching specific syscalls in this
- breakpoint. If we are, then we must guarantee that the called
- syscall is the same syscall we are catching. */
- int syscall_number = 0;
- const struct syscall_catchpoint *c
- = (const struct syscall_catchpoint *) bl->owner;
-
- if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY
- && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN)
- return 0;
-
- syscall_number = ws->value.syscall_number;
-
- /* Now, checking if the syscall is the same. */
- if (c->syscalls_to_be_caught)
- {
- int i, iter;
-
- for (i = 0;
- VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
- i++)
- if (syscall_number == iter)
- return 1;
-
- return 0;
- }
-
- return 1;
-}
-
-/* Implement the "print_it" breakpoint_ops method for syscall
- catchpoints. */
-
-static enum print_stop_action
-print_it_catch_syscall (bpstat bs)
-{
- struct ui_out *uiout = current_uiout;
- struct breakpoint *b = bs->breakpoint_at;
- /* These are needed because we want to know in which state a
- syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY
- or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we
- must print "called syscall" or "returned from syscall". */
- ptid_t ptid;
- struct target_waitstatus last;
- struct syscall s;
-
- get_last_target_status (&ptid, &last);
-
- get_syscall_by_number (last.value.syscall_number, &s);
-
- annotate_catchpoint (b->number);
-
- if (b->disposition == disp_del)
- ui_out_text (uiout, "\nTemporary catchpoint ");
- else
- ui_out_text (uiout, "\nCatchpoint ");
- if (ui_out_is_mi_like_p (uiout))
- {
- ui_out_field_string (uiout, "reason",
- async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY
- ? EXEC_ASYNC_SYSCALL_ENTRY
- : EXEC_ASYNC_SYSCALL_RETURN));
- ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
- }
- ui_out_field_int (uiout, "bkptno", b->number);
-
- if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY)
- ui_out_text (uiout, " (call to syscall ");
- else
- ui_out_text (uiout, " (returned from syscall ");
-
- if (s.name == NULL || ui_out_is_mi_like_p (uiout))
- ui_out_field_int (uiout, "syscall-number", last.value.syscall_number);
- if (s.name != NULL)
- ui_out_field_string (uiout, "syscall-name", s.name);
-
- ui_out_text (uiout, "), ");
-
- return PRINT_SRC_AND_LOC;
-}
-
-/* Implement the "print_one" breakpoint_ops method for syscall
- catchpoints. */
-
-static void
-print_one_catch_syscall (struct breakpoint *b,
- struct bp_location **last_loc)
-{
- struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
- struct value_print_options opts;
- struct ui_out *uiout = current_uiout;
-
- get_user_print_options (&opts);
- /* Field 4, the address, is omitted (which makes the columns not
- line up too nicely with the headers, but the effect is relatively
- readable). */
- if (opts.addressprint)
- ui_out_field_skip (uiout, "addr");
- annotate_field (5);
-
- if (c->syscalls_to_be_caught
- && VEC_length (int, c->syscalls_to_be_caught) > 1)
- ui_out_text (uiout, "syscalls \"");
- else
- ui_out_text (uiout, "syscall \"");
-
- if (c->syscalls_to_be_caught)
- {
- int i, iter;
- char *text = xstrprintf ("%s", "");
-
- for (i = 0;
- VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
- i++)
- {
- char *x = text;
- struct syscall s;
- get_syscall_by_number (iter, &s);
-
- if (s.name != NULL)
- text = xstrprintf ("%s%s, ", text, s.name);
- else
- text = xstrprintf ("%s%d, ", text, iter);
-
- /* We have to xfree the last 'text' (now stored at 'x')
- because xstrprintf dynamically allocates new space for it
- on every call. */
- xfree (x);
- }
- /* Remove the last comma. */
- text[strlen (text) - 2] = '\0';
- ui_out_field_string (uiout, "what", text);
- }
- else
- ui_out_field_string (uiout, "what", "<any syscall>");
- ui_out_text (uiout, "\" ");
-
- if (ui_out_is_mi_like_p (uiout))
- ui_out_field_string (uiout, "catch-type", "syscall");
-}
-
-/* Implement the "print_mention" breakpoint_ops method for syscall
- catchpoints. */
-
-static void
-print_mention_catch_syscall (struct breakpoint *b)
-{
- struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
-
- if (c->syscalls_to_be_caught)
- {
- int i, iter;
-
- if (VEC_length (int, c->syscalls_to_be_caught) > 1)
- printf_filtered (_("Catchpoint %d (syscalls"), b->number);
- else
- printf_filtered (_("Catchpoint %d (syscall"), b->number);
-
- for (i = 0;
- VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
- i++)
- {
- struct syscall s;
- get_syscall_by_number (iter, &s);
-
- if (s.name)
- printf_filtered (" '%s' [%d]", s.name, s.number);
- else
- printf_filtered (" %d", s.number);
- }
- printf_filtered (")");
- }
- else
- printf_filtered (_("Catchpoint %d (any syscall)"),
- b->number);
-}
-
-/* Implement the "print_recreate" breakpoint_ops method for syscall
- catchpoints. */
-
-static void
-print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp)
-{
- struct syscall_catchpoint *c = (struct syscall_catchpoint *) b;
-
- fprintf_unfiltered (fp, "catch syscall");
-
- if (c->syscalls_to_be_caught)
- {
- int i, iter;
-
- for (i = 0;
- VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
- i++)
- {
- struct syscall s;
-
- get_syscall_by_number (iter, &s);
- if (s.name)
- fprintf_unfiltered (fp, " %s", s.name);
- else
- fprintf_unfiltered (fp, " %d", s.number);
- }
- }
- print_recreate_thread (b, fp);
-}
-
-/* The breakpoint_ops structure to be used in syscall catchpoints. */
-
-static struct breakpoint_ops catch_syscall_breakpoint_ops;
-
-/* Returns non-zero if 'b' is a syscall catchpoint. */
-
-static int
-syscall_catchpoint_p (struct breakpoint *b)
-{
- return (b->ops == &catch_syscall_breakpoint_ops);
-}
-
-/* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG
- is non-zero, then make the breakpoint temporary. If COND_STRING is
- not NULL, then store it in the breakpoint. OPS, if not NULL, is
- the breakpoint_ops structure associated to the catchpoint. */
-
-void
-init_catchpoint (struct breakpoint *b,
- struct gdbarch *gdbarch, int tempflag,
- char *cond_string,
- const struct breakpoint_ops *ops)
-{
- struct symtab_and_line sal;
-
- init_sal (&sal);
- sal.pspace = current_program_space;
-
- init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops);
-
- b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string);
- b->disposition = tempflag ? disp_del : disp_donttouch;
-}
-
-void
-install_breakpoint (int internal, struct breakpoint *b, int update_gll)
-{
- add_to_breakpoint_chain (b);
- set_breakpoint_number (internal, b);
- if (is_tracepoint (b))
- set_tracepoint_count (breakpoint_count);
- if (!internal)
- mention (b);
- observer_notify_breakpoint_created (b);
-
- if (update_gll)
- update_global_location_list (1);
-}
-
-static void
-create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch,
- int tempflag, char *cond_string,
- const struct breakpoint_ops *ops)
-{
- struct fork_catchpoint *c = XNEW (struct fork_catchpoint);
-
- init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops);
-
- c->forked_inferior_pid = null_ptid;
-
- install_breakpoint (0, &c->base, 1);
-}
-
-/* Exec catchpoints. */
-
-/* An instance of this type is used to represent an exec catchpoint.
- It includes a "struct breakpoint" as a kind of base class; users
- downcast to "struct breakpoint *" when needed. A breakpoint is
- really of this type iff its ops pointer points to
- CATCH_EXEC_BREAKPOINT_OPS. */
-
-struct exec_catchpoint
-{
- /* The base class. */
- struct breakpoint base;
-
- /* Filename of a program whose exec triggered this catchpoint.
- This field is only valid immediately after this catchpoint has
- triggered. */
- char *exec_pathname;
-};
-
-/* Implement the "dtor" breakpoint_ops method for exec
- catchpoints. */
-
-static void
-dtor_catch_exec (struct breakpoint *b)
-{
- struct exec_catchpoint *c = (struct exec_catchpoint *) b;
-
- xfree (c->exec_pathname);
-
- base_breakpoint_ops.dtor (b);
-}
-
-static int
-insert_catch_exec (struct bp_location *bl)
-{
- return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid));
-}
+ return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid));
+}
static int
remove_catch_exec (struct bp_location *bl)
static struct breakpoint_ops catch_exec_breakpoint_ops;
-static void
-create_syscall_event_catchpoint (int tempflag, VEC(int) *filter,
- const struct breakpoint_ops *ops)
-{
- struct syscall_catchpoint *c;
- struct gdbarch *gdbarch = get_current_arch ();
-
- c = XNEW (struct syscall_catchpoint);
- init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops);
- c->syscalls_to_be_caught = filter;
-
- install_breakpoint (0, &c->base, 1);
-}
-
static int
hw_breakpoint_used_count (void)
{
if (is_watchpoint (b) && breakpoint_enabled (b))
{
b->enable_state = bp_call_disabled;
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
}
}
}
if (is_watchpoint (b) && b->enable_state == bp_call_disabled)
{
b->enable_state = bp_enabled;
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
}
}
}
disable_breakpoints_before_startup (void)
{
current_program_space->executing_startup = 1;
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
}
void
breakpoint_re_set ();
}
+/* Create a new single-step breakpoint for thread THREAD, with no
+ locations. */
-/* Set a breakpoint that will evaporate an end of command
- at address specified by SAL.
- Restrict it to frame FRAME if FRAME is nonzero. */
+static struct breakpoint *
+new_single_step_breakpoint (int thread, struct gdbarch *gdbarch)
+{
+ struct breakpoint *b = XNEW (struct breakpoint);
+
+ init_raw_breakpoint_without_location (b, gdbarch, bp_single_step,
+ &momentary_breakpoint_ops);
+
+ b->disposition = disp_donttouch;
+ b->frame_id = null_frame_id;
+
+ b->thread = thread;
+ gdb_assert (b->thread != 0);
+
+ add_to_breakpoint_chain (b);
+
+ return b;
+}
+
+/* Set a momentary breakpoint of type TYPE at address specified by
+ SAL. If FRAME_ID is valid, the breakpoint is restricted to that
+ frame. */
struct breakpoint *
set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal,
if (in_thread_list (inferior_ptid))
b->thread = pid_to_thread_id (inferior_ptid);
- update_global_location_list_nothrow (1);
+ update_global_location_list_nothrow (UGLL_MAY_INSERT);
return b;
}
/* Make a momentary breakpoint based on the master breakpoint ORIG.
- The new breakpoint will have type TYPE, and use OPS as it
- breakpoint_ops. */
+ The new breakpoint will have type TYPE, use OPS as its
+ breakpoint_ops, and will set enabled to LOC_ENABLED. */
static struct breakpoint *
momentary_breakpoint_from_master (struct breakpoint *orig,
enum bptype type,
- const struct breakpoint_ops *ops)
+ const struct breakpoint_ops *ops,
+ int loc_enabled)
{
struct breakpoint *copy;
copy->loc->probe = orig->loc->probe;
copy->loc->line_number = orig->loc->line_number;
copy->loc->symtab = orig->loc->symtab;
+ copy->loc->enabled = loc_enabled;
copy->frame_id = orig->frame_id;
copy->thread = orig->thread;
copy->pspace = orig->pspace;
copy->disposition = disp_donttouch;
copy->number = internal_breakpoint_number--;
- update_global_location_list_nothrow (0);
+ update_global_location_list_nothrow (UGLL_DONT_INSERT);
return copy;
}
if (orig == NULL)
return NULL;
- return momentary_breakpoint_from_master (orig, orig->type, orig->ops);
+ return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0);
}
struct breakpoint *
}
\f
+static int bp_loc_is_permanent (struct bp_location *loc);
+
static struct bp_location *
add_location_to_breakpoint (struct breakpoint *b,
const struct symtab_and_line *sal)
loc->requested_address = sal->pc;
loc->address = adjusted_address;
loc->pspace = sal->pspace;
- loc->probe = sal->probe;
+ loc->probe.probe = sal->probe;
+ loc->probe.objfile = sal->objfile;
gdb_assert (loc->pspace != NULL);
loc->section = sal->section;
loc->gdbarch = loc_gdbarch;
set_breakpoint_location_function (loc,
sal->explicit_pc || sal->explicit_line);
+
+ /* While by definition, permanent breakpoints are already present in the
+ code, we don't mark the location as inserted. Normally one would expect
+ that GDB could rely on that breakpoint instruction to stop the program,
+ thus removing the need to insert its own breakpoint, except that executing
+ the breakpoint instruction can kill the target instead of reporting a
+ SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the
+ instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies
+ with "Trap 0x02 while interrupts disabled, Error state". Letting the
+ breakpoint be inserted normally results in QEMU knowing about the GDB
+ breakpoint, and thus trap before the breakpoint instruction is executed.
+ (If GDB later needs to continue execution past the permanent breakpoint,
+ it manually increments the PC, thus avoiding executing the breakpoint
+ instruction.) */
+ if (bp_loc_is_permanent (loc))
+ loc->permanent = 1;
+
return loc;
}
\f
-/* Return 1 if LOC is pointing to a permanent breakpoint,
- return 0 otherwise. */
+/* See breakpoint.h. */
-static int
-bp_loc_is_permanent (struct bp_location *loc)
+int
+program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address)
{
int len;
CORE_ADDR addr;
struct cleanup *cleanup;
int retval = 0;
- gdb_assert (loc != NULL);
-
- addr = loc->address;
- bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len);
+ addr = address;
+ bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len);
/* Software breakpoints unsupported? */
if (bpoint == NULL)
return 0;
- target_mem = alloca (len);
+ target_mem = (gdb_byte *) alloca (len);
/* Enable the automatic memory restoration from breakpoints while
we read the memory. Otherwise we could say about our temporary
breakpoints they are permanent. */
- cleanup = save_current_space_and_thread ();
-
- switch_to_program_space_and_thread (loc->pspace);
- make_show_memory_breakpoints_cleanup (0);
+ cleanup = make_show_memory_breakpoints_cleanup (0);
- if (target_read_memory (loc->address, target_mem, len) == 0
+ if (target_read_memory (address, target_mem, len) == 0
&& memcmp (target_mem, bpoint, len) == 0)
retval = 1;
return retval;
}
+/* Return 1 if LOC is pointing to a permanent breakpoint,
+ return 0 otherwise. */
+
+static int
+bp_loc_is_permanent (struct bp_location *loc)
+{
+ struct cleanup *cleanup;
+ int retval;
+
+ gdb_assert (loc != NULL);
+
+ /* If we have a catchpoint or a watchpoint, just return 0. We should not
+ attempt to read from the addresses the locations of these breakpoint types
+ point to. program_breakpoint_here_p, below, will attempt to read
+ memory. */
+ if (!breakpoint_address_is_meaningful (loc->owner))
+ return 0;
+
+ cleanup = save_current_space_and_thread ();
+ switch_to_program_space_and_thread (loc->pspace);
+
+ retval = program_breakpoint_here_p (loc->gdbarch, loc->address);
+
+ do_cleanups (cleanup);
+
+ return retval;
+}
+
/* Build a command list for the dprintf corresponding to the current
settings of the dprintf style options. */
gdb_assert (printf_line != NULL);
/* Manufacture a printf sequence. */
{
- struct command_line *printf_cmd_line
- = xmalloc (sizeof (struct command_line));
+ struct command_line *printf_cmd_line = XNEW (struct command_line);
- printf_cmd_line = xmalloc (sizeof (struct command_line));
printf_cmd_line->control_type = simple_control;
printf_cmd_line->body_count = 0;
printf_cmd_line->body_list = NULL;
}
}
-/* Create a breakpoint with SAL as location. Use ADDR_STRING
- as textual description of the location, and COND_STRING
+/* Create a breakpoint with SAL as location. Use LOCATION
+ as a description of the location, and COND_STRING
as condition expression. */
static void
init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch,
- struct symtabs_and_lines sals, char *addr_string,
+ struct symtabs_and_lines sals,
+ struct event_location *location,
char *filter, char *cond_string,
char *extra_string,
enum bptype type, enum bpdisp disposition,
{
/* We already know the marker exists, otherwise, we
wouldn't see a sal for it. */
- char *p = &addr_string[3];
- char *endp;
+ const char *p = &event_location_to_string (b->location)[3];
+ const char *endp;
char *marker_str;
- p = skip_spaces (p);
+ p = skip_spaces_const (p);
- endp = skip_to_space (p);
+ endp = skip_to_space_const (p);
marker_str = savestring (p, endp - p);
t->static_trace_marker_id = marker_str;
loc->inserted = 1;
}
- if (bp_loc_is_permanent (loc))
- make_breakpoint_permanent (b);
-
if (b->cond_string)
{
const char *arg = b->cond_string;
}
b->display_canonical = display_canonical;
- if (addr_string)
- b->addr_string = addr_string;
+ if (location != NULL)
+ b->location = location;
else
- /* addr_string has to be used or breakpoint_re_set will delete
- me. */
- b->addr_string
- = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address));
+ b->location = new_address_location (b->loc->address);
b->filter = filter;
}
static void
create_breakpoint_sal (struct gdbarch *gdbarch,
- struct symtabs_and_lines sals, char *addr_string,
+ struct symtabs_and_lines sals,
+ struct event_location *location,
char *filter, char *cond_string,
char *extra_string,
enum bptype type, enum bpdisp disposition,
old_chain = make_cleanup (xfree, b);
init_breakpoint_sal (b, gdbarch,
- sals, addr_string,
+ sals, location,
filter, cond_string, extra_string,
type, disposition,
thread, task, ignore_count,
for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i)
{
- /* Note that 'addr_string' can be NULL in the case of a plain
+ /* Note that 'location' can be NULL in the case of a plain
'break', without arguments. */
- char *addr_string = (canonical->addr_string
- ? xstrdup (canonical->addr_string)
- : NULL);
+ struct event_location *location
+ = (canonical->location != NULL
+ ? copy_event_location (canonical->location) : NULL);
char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL;
- struct cleanup *inner = make_cleanup (xfree, addr_string);
+ struct cleanup *inner = make_cleanup_delete_event_location (location);
make_cleanup (xfree, filter_string);
create_breakpoint_sal (gdbarch, lsal->sals,
- addr_string,
+ location,
filter_string,
cond_string, extra_string,
type, disposition,
}
}
-/* Parse ADDRESS which is assumed to be a SAL specification possibly
+/* Parse LOCATION which is assumed to be a SAL specification possibly
followed by conditionals. On return, SALS contains an array of SAL
- addresses found. ADDR_STRING contains a vector of (canonical)
- address strings. ADDRESS points to the end of the SAL.
+ addresses found. LOCATION points to the end of the SAL (for
+ linespec locations).
The array and the line spec strings are allocated on the heap, it is
the caller's responsibility to free them. */
static void
-parse_breakpoint_sals (char **address,
+parse_breakpoint_sals (const struct event_location *location,
struct linespec_result *canonical)
{
- /* If no arg given, or if first arg is 'if ', use the default
- breakpoint. */
- if ((*address) == NULL
- || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2])))
+ struct symtab_and_line cursal;
+
+ if (event_location_type (location) == LINESPEC_LOCATION)
{
- /* The last displayed codepoint, if it's valid, is our default breakpoint
- address. */
- if (last_displayed_sal_is_valid ())
+ const char *address = get_linespec_location (location);
+
+ if (address == NULL)
{
- struct linespec_sals lsal;
- struct symtab_and_line sal;
- CORE_ADDR pc;
-
- init_sal (&sal); /* Initialize to zeroes. */
- lsal.sals.sals = (struct symtab_and_line *)
- xmalloc (sizeof (struct symtab_and_line));
-
- /* Set sal's pspace, pc, symtab, and line to the values
- corresponding to the last call to print_frame_info.
- Be sure to reinitialize LINE with NOTCURRENT == 0
- as the breakpoint line number is inappropriate otherwise.
- find_pc_line would adjust PC, re-set it back. */
- get_last_displayed_sal (&sal);
- pc = sal.pc;
- sal = find_pc_line (pc, 0);
-
- /* "break" without arguments is equivalent to "break *PC"
- where PC is the last displayed codepoint's address. So
- make sure to set sal.explicit_pc to prevent GDB from
- trying to expand the list of sals to include all other
- instances with the same symtab and line. */
- sal.pc = pc;
- sal.explicit_pc = 1;
-
- lsal.sals.sals[0] = sal;
- lsal.sals.nelts = 1;
- lsal.canonical = NULL;
-
- VEC_safe_push (linespec_sals, canonical->sals, &lsal);
+ /* The last displayed codepoint, if it's valid, is our default
+ breakpoint address. */
+ if (last_displayed_sal_is_valid ())
+ {
+ struct linespec_sals lsal;
+ struct symtab_and_line sal;
+ CORE_ADDR pc;
+
+ init_sal (&sal); /* Initialize to zeroes. */
+ lsal.sals.sals = XNEW (struct symtab_and_line);
+
+ /* Set sal's pspace, pc, symtab, and line to the values
+ corresponding to the last call to print_frame_info.
+ Be sure to reinitialize LINE with NOTCURRENT == 0
+ as the breakpoint line number is inappropriate otherwise.
+ find_pc_line would adjust PC, re-set it back. */
+ get_last_displayed_sal (&sal);
+ pc = sal.pc;
+ sal = find_pc_line (pc, 0);
+
+ /* "break" without arguments is equivalent to "break *PC"
+ where PC is the last displayed codepoint's address. So
+ make sure to set sal.explicit_pc to prevent GDB from
+ trying to expand the list of sals to include all other
+ instances with the same symtab and line. */
+ sal.pc = pc;
+ sal.explicit_pc = 1;
+
+ lsal.sals.sals[0] = sal;
+ lsal.sals.nelts = 1;
+ lsal.canonical = NULL;
+
+ VEC_safe_push (linespec_sals, canonical->sals, &lsal);
+ return;
+ }
+ else
+ error (_("No default breakpoint address now."));
}
- else
- error (_("No default breakpoint address now."));
}
- else
+
+ /* Force almost all breakpoints to be in terms of the
+ current_source_symtab (which is decode_line_1's default).
+ This should produce the results we want almost all of the
+ time while leaving default_breakpoint_* alone.
+
+ ObjC: However, don't match an Objective-C method name which
+ may have a '+' or '-' succeeded by a '['. */
+ cursal = get_current_source_symtab_and_line ();
+ if (last_displayed_sal_is_valid ())
{
- struct symtab_and_line cursal = get_current_source_symtab_and_line ();
+ const char *address = NULL;
- /* Force almost all breakpoints to be in terms of the
- current_source_symtab (which is decode_line_1's default).
- This should produce the results we want almost all of the
- time while leaving default_breakpoint_* alone.
+ if (event_location_type (location) == LINESPEC_LOCATION)
+ address = get_linespec_location (location);
- ObjC: However, don't match an Objective-C method name which
- may have a '+' or '-' succeeded by a '['. */
- if (last_displayed_sal_is_valid ()
- && (!cursal.symtab
- || ((strchr ("+-", (*address)[0]) != NULL)
- && ((*address)[1] != '['))))
- decode_line_full (address, DECODE_LINE_FUNFIRSTLINE,
- get_last_displayed_symtab (),
- get_last_displayed_line (),
- canonical, NULL, NULL);
- else
- decode_line_full (address, DECODE_LINE_FUNFIRSTLINE,
- cursal.symtab, cursal.line, canonical, NULL, NULL);
+ if (!cursal.symtab
+ || (address != NULL
+ && strchr ("+-", address[0]) != NULL
+ && address[1] != '['))
+ {
+ decode_line_full (location, DECODE_LINE_FUNFIRSTLINE,
+ get_last_displayed_symtab (),
+ get_last_displayed_line (),
+ canonical, NULL, NULL);
+ return;
+ }
}
+
+ decode_line_full (location, DECODE_LINE_FUNFIRSTLINE,
+ cursal.symtab, cursal.line, canonical, NULL, NULL);
}
associated with SAL. */
if (sarch == NULL)
sarch = gdbarch;
- rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc,
- NULL, &msg);
+ rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, &msg);
old_chain = make_cleanup (xfree, msg);
if (!rslt)
/* Decode a static tracepoint marker spec. */
static struct symtabs_and_lines
-decode_static_tracepoint_spec (char **arg_p)
+decode_static_tracepoint_spec (const char **arg_p)
{
VEC(static_tracepoint_marker_p) *markers = NULL;
struct symtabs_and_lines sals;
struct cleanup *old_chain;
- char *p = &(*arg_p)[3];
- char *endp;
+ const char *p = &(*arg_p)[3];
+ const char *endp;
char *marker_str;
int i;
- p = skip_spaces (p);
+ p = skip_spaces_const (p);
- endp = skip_to_space (p);
+ endp = skip_to_space_const (p);
marker_str = savestring (p, endp - p);
old_chain = make_cleanup (xfree, marker_str);
error (_("No known static tracepoint marker named %s"), marker_str);
sals.nelts = VEC_length(static_tracepoint_marker_p, markers);
- sals.sals = xmalloc (sizeof *sals.sals * sals.nelts);
+ sals.sals = XNEWVEC (struct symtab_and_line, sals.nelts);
for (i = 0; i < sals.nelts; i++)
{
return sals;
}
-/* Set a breakpoint. This function is shared between CLI and MI
- functions for setting a breakpoint. This function has two major
- modes of operations, selected by the PARSE_ARG parameter. If
- non-zero, the function will parse ARG, extracting location,
- condition, thread and extra string. Otherwise, ARG is just the
- breakpoint's location, with condition, thread, and extra string
- specified by the COND_STRING, THREAD and EXTRA_STRING parameters.
- If INTERNAL is non-zero, the breakpoint number will be allocated
- from the internal breakpoint count. Returns true if any breakpoint
- was created; false otherwise. */
+/* See breakpoint.h. */
int
create_breakpoint (struct gdbarch *gdbarch,
- char *arg, char *cond_string,
+ const struct event_location *location, char *cond_string,
int thread, char *extra_string,
- int parse_arg,
+ int parse_extra,
int tempflag, enum bptype type_wanted,
int ignore_count,
enum auto_boolean pending_break_support,
int from_tty, int enabled, int internal,
unsigned flags)
{
- volatile struct gdb_exception e;
- char *copy_arg = NULL;
- char *addr_start = arg;
struct linespec_result canonical;
struct cleanup *old_chain;
struct cleanup *bkpt_chain = NULL;
gdb_assert (ops != NULL);
+ /* If extra_string isn't useful, set it to NULL. */
+ if (extra_string != NULL && *extra_string == '\0')
+ extra_string = NULL;
+
init_linespec_result (&canonical);
- TRY_CATCH (e, RETURN_MASK_ALL)
+ TRY
{
- ops->create_sals_from_address (&arg, &canonical, type_wanted,
- addr_start, ©_arg);
+ ops->create_sals_from_location (location, &canonical, type_wanted);
}
-
- /* If caller is interested in rc value from parse, set value. */
- switch (e.reason)
+ CATCH (e, RETURN_MASK_ERROR)
{
- case GDB_NO_ERROR:
- if (VEC_empty (linespec_sals, canonical.sals))
- return 0;
- break;
- case RETURN_ERROR:
- switch (e.error)
+ /* If caller is interested in rc value from parse, set
+ value. */
+ if (e.error == NOT_FOUND_ERROR)
{
- case NOT_FOUND_ERROR:
-
/* If pending breakpoint support is turned off, throw
error. */
a pending breakpoint and selected yes, or pending
breakpoint behavior is on and thus a pending breakpoint
is defaulted on behalf of the user. */
- {
- struct linespec_sals lsal;
-
- copy_arg = xstrdup (addr_start);
- lsal.canonical = xstrdup (copy_arg);
- lsal.sals.nelts = 1;
- lsal.sals.sals = XNEW (struct symtab_and_line);
- init_sal (&lsal.sals.sals[0]);
- pending = 1;
- VEC_safe_push (linespec_sals, canonical.sals, &lsal);
- }
- break;
- default:
- throw_exception (e);
+ pending = 1;
}
- break;
- default:
- throw_exception (e);
+ else
+ throw_exception (e);
}
+ END_CATCH
+
+ if (!pending && VEC_empty (linespec_sals, canonical.sals))
+ return 0;
/* Create a chain of things that always need to be cleaned up. */
old_chain = make_cleanup_destroy_linespec_result (&canonical);
breakpoint. */
if (!pending)
{
- if (parse_arg)
+ if (parse_extra)
{
char *rest;
struct linespec_sals *lsal;
sal is OK. When setting the breakpoint we'll
re-parse it in context of each sal. */
- find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string,
- &thread, &task, &rest);
+ find_condition_and_thread (extra_string, lsal->sals.sals[0].pc,
+ &cond_string, &thread, &task, &rest);
if (cond_string)
make_cleanup (xfree, cond_string);
if (rest)
make_cleanup (xfree, rest);
if (rest)
extra_string = rest;
+ else
+ extra_string = NULL;
}
else
{
- if (*arg != '\0')
- error (_("Garbage '%s' at end of location"), arg);
+ if (type_wanted != bp_dprintf
+ && extra_string != NULL && *extra_string != '\0')
+ error (_("Garbage '%s' at end of location"), extra_string);
/* Create a private copy of condition string. */
if (cond_string)
{
struct breakpoint *b;
- make_cleanup (xfree, copy_arg);
-
if (is_tracepoint_type (type_wanted))
{
struct tracepoint *t;
b = XNEW (struct breakpoint);
init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops);
+ b->location = copy_event_location (location);
- b->addr_string = copy_arg;
- if (parse_arg)
+ if (parse_extra)
b->cond_string = NULL;
else
{
make_cleanup (xfree, cond_string);
}
b->cond_string = cond_string;
+ b->thread = thread;
}
- b->extra_string = NULL;
+
+ /* Create a private copy of any extra string. */
+ if (extra_string != NULL)
+ {
+ extra_string = xstrdup (extra_string);
+ make_cleanup (xfree, extra_string);
+ }
+ b->extra_string = extra_string;
b->ignore_count = ignore_count;
b->disposition = tempflag ? disp_del : disp_donttouch;
b->condition_not_parsed = 1;
do_cleanups (old_chain);
/* error call may happen here - have BKPT_CHAIN already discarded. */
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
return 1;
}
? bp_hardware_breakpoint
: bp_breakpoint);
struct breakpoint_ops *ops;
- const char *arg_cp = arg;
+ struct event_location *location;
+ struct cleanup *cleanup;
+
+ location = string_to_event_location (&arg, current_language);
+ cleanup = make_cleanup_delete_event_location (location);
/* Matching breakpoints on probes. */
- if (arg && probe_linespec_to_ops (&arg_cp) != NULL)
+ if (location != NULL
+ && event_location_type (location) == PROBE_LOCATION)
ops = &bkpt_probe_breakpoint_ops;
else
ops = &bkpt_breakpoint_ops;
create_breakpoint (get_current_arch (),
- arg,
- NULL, 0, NULL, 1 /* parse arg */,
+ location,
+ NULL, 0, arg, 1 /* parse arg */,
tempflag, type_wanted,
0 /* Ignore count */,
pending_break_support,
1 /* enabled */,
0 /* internal */,
0);
+ do_cleanups (cleanup);
}
/* Helper function for break_command_1 and disassemble_command. */
if (sal->section == 0 && sal->symtab != NULL)
{
- struct blockvector *bv;
- struct block *b;
+ const struct blockvector *bv;
+ const struct block *b;
struct symbol *sym;
- bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab);
+ bv = blockvector_for_pc_sect (sal->pc, 0, &b,
+ SYMTAB_COMPUNIT (sal->symtab));
if (bv != NULL)
{
sym = block_linkage_function (b);
if (sym != NULL)
{
- fixup_symbol_section (sym, sal->symtab->objfile);
- sal->section = SYMBOL_OBJ_SECTION (sal->symtab->objfile, sym);
+ fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab));
+ sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab),
+ sym);
}
else
{
msym = lookup_minimal_symbol_by_pc (sal->pc);
if (msym.minsym)
- sal->section = SYMBOL_OBJ_SECTION (msym.objfile, msym.minsym);
+ sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym);
do_cleanups (old_chain);
}
static void
dprintf_command (char *arg, int from_tty)
{
+ struct event_location *location;
+ struct cleanup *cleanup;
+
+ location = string_to_event_location (&arg, current_language);
+ cleanup = make_cleanup_delete_event_location (location);
+
+ /* If non-NULL, ARG should have been advanced past the location;
+ the next character must be ','. */
+ if (arg != NULL)
+ {
+ if (arg[0] != ',' || arg[1] == '\0')
+ error (_("Format string required"));
+ else
+ {
+ /* Skip the comma. */
+ ++arg;
+ }
+ }
+
create_breakpoint (get_current_arch (),
- arg,
- NULL, 0, NULL, 1 /* parse arg */,
+ location,
+ NULL, 0, arg, 1 /* parse arg */,
0, bp_dprintf,
0 /* Ignore count */,
pending_break_support,
1 /* enabled */,
0 /* internal */,
0);
+ do_cleanups (cleanup);
}
static void
static void
print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp)
{
- fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string,
- b->addr_string_range_end);
+ fprintf_unfiltered (fp, "break-range %s, %s",
+ event_location_to_string (b->location),
+ event_location_to_string (b->location_range_end));
print_recreate_thread (b, fp);
}
struct symtab_and_line sal_start, sal_end;
struct cleanup *cleanup_bkpt;
struct linespec_sals *lsal_start, *lsal_end;
+ struct event_location *start_location, *end_location;
/* We don't support software ranged breakpoints. */
if (target_ranged_break_num_registers () < 0)
init_linespec_result (&canonical_start);
arg_start = arg;
- parse_breakpoint_sals (&arg, &canonical_start);
-
- cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start);
+ start_location = string_to_event_location (&arg, current_language);
+ cleanup_bkpt = make_cleanup_delete_event_location (start_location);
+ parse_breakpoint_sals (start_location, &canonical_start);
+ make_cleanup_destroy_linespec_result (&canonical_start);
if (arg[0] != ',')
error (_("Too few arguments."));
symtab and line as the default symtab and line for the end of the
range. This makes it possible to have ranges like "foo.c:27, +14",
where +14 means 14 lines from the start location. */
- decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE,
+ end_location = string_to_event_location (&arg, current_language);
+ make_cleanup_delete_event_location (end_location);
+ decode_line_full (end_location, DECODE_LINE_FUNFIRSTLINE,
sal_start.symtab, sal_start.line,
&canonical_end, NULL, NULL);
error (_("Cannot create a ranged breakpoint with multiple locations."));
sal_end = lsal_end->sals.sals[0];
- addr_string_end = savestring (arg_start, arg - arg_start);
- make_cleanup (xfree, addr_string_end);
end = find_breakpoint_range_end (sal_end);
if (sal_start.pc > end)
set_breakpoint_count (breakpoint_count + 1);
b->number = breakpoint_count;
b->disposition = disp_donttouch;
- b->addr_string = xstrdup (addr_string_start);
- b->addr_string_range_end = xstrdup (addr_string_end);
+ b->location = copy_event_location (start_location);
+ b->location_range_end = copy_event_location (end_location);
b->loc->length = length;
do_cleanups (cleanup_bkpt);
mention (b);
observer_notify_breakpoint_created (b);
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
}
/* Return non-zero if EXP is verified as constant. Returned zero
case BINOP_MAX:
case BINOP_INTDIV:
case BINOP_CONCAT:
- case BINOP_IN:
- case BINOP_RANGE:
case TERNOP_COND:
case TERNOP_SLICE:
watch_command_1 (const char *arg, int accessflag, int from_tty,
int just_location, int internal)
{
- volatile struct gdb_exception e;
struct breakpoint *b, *scope_breakpoint = NULL;
struct expression *exp;
const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL;
struct value *val, *mark, *result;
+ int saved_bitpos = 0, saved_bitsize = 0;
struct frame_info *frame;
const char *exp_start = NULL;
const char *exp_end = NULL;
tok++;
toklen = end_tok - tok + 1;
- if (toklen == 6 && !strncmp (tok, "thread", 6))
+ if (toklen == 6 && startswith (tok, "thread"))
{
/* At this point we've found a "thread" token, which means
the user is trying to set a watchpoint that triggers
if (!valid_thread_id (thread))
invalid_thread_id_error (thread);
}
- else if (toklen == 4 && !strncmp (tok, "mask", 4))
+ else if (toklen == 4 && startswith (tok, "mask"))
{
/* We've found a "mask" token, which means the user wants to
create a hardware watchpoint that is going to have the mask
mark = value_mark ();
fetch_subexp_value (exp, &pc, &val, &result, NULL, just_location);
+ if (val != NULL && just_location)
+ {
+ saved_bitpos = value_bitpos (val);
+ saved_bitsize = value_bitsize (val);
+ }
+
if (just_location)
{
int ret;
else
{
w->val = val;
+ w->val_bitpos = saved_bitpos;
+ w->val_bitsize = saved_bitsize;
w->val_valid = 1;
}
if (!just_location)
value_free_to_mark (mark);
- TRY_CATCH (e, RETURN_MASK_ALL)
+ TRY
{
/* Finally update the new watchpoint. This creates the locations
that should be inserted. */
update_watchpoint (w, 1);
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ALL)
{
delete_breakpoint (b);
throw_exception (e);
}
+ END_CATCH
install_breakpoint (internal, b, 1);
do_cleanups (back_to);
}
\f
-/* Helper routines for the until_command routine in infcmd.c. Here
- because it uses the mechanisms of breakpoints. */
+/* Data for the FSM that manages the until(location)/advance commands
+ in infcmd.c. Here because it uses the mechanisms of
+ breakpoints. */
-struct until_break_command_continuation_args
+struct until_break_fsm
{
- struct breakpoint *breakpoint;
- struct breakpoint *breakpoint2;
- int thread_num;
+ /* The base class. */
+ struct thread_fsm thread_fsm;
+
+ /* The thread that as current when the command was executed. */
+ int thread;
+
+ /* The breakpoint set at the destination location. */
+ struct breakpoint *location_breakpoint;
+
+ /* Breakpoint set at the return address in the caller frame. May be
+ NULL. */
+ struct breakpoint *caller_breakpoint;
};
-/* This function is called by fetch_inferior_event via the
- cmd_continuation pointer, to complete the until command. It takes
- care of cleaning up the temporary breakpoints set up by the until
- command. */
+static void until_break_fsm_clean_up (struct thread_fsm *self);
+static int until_break_fsm_should_stop (struct thread_fsm *self);
+static enum async_reply_reason
+ until_break_fsm_async_reply_reason (struct thread_fsm *self);
+
+/* until_break_fsm's vtable. */
+
+static struct thread_fsm_ops until_break_fsm_ops =
+{
+ NULL, /* dtor */
+ until_break_fsm_clean_up,
+ until_break_fsm_should_stop,
+ NULL, /* return_value */
+ until_break_fsm_async_reply_reason,
+};
+
+/* Allocate a new until_break_command_fsm. */
+
+static struct until_break_fsm *
+new_until_break_fsm (int thread,
+ struct breakpoint *location_breakpoint,
+ struct breakpoint *caller_breakpoint)
+{
+ struct until_break_fsm *sm;
+
+ sm = XCNEW (struct until_break_fsm);
+ thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops);
+
+ sm->thread = thread;
+ sm->location_breakpoint = location_breakpoint;
+ sm->caller_breakpoint = caller_breakpoint;
+
+ return sm;
+}
+
+/* Implementation of the 'should_stop' FSM method for the
+ until(location)/advance commands. */
+
+static int
+until_break_fsm_should_stop (struct thread_fsm *self)
+{
+ struct until_break_fsm *sm = (struct until_break_fsm *) self;
+ struct thread_info *tp = inferior_thread ();
+
+ if (bpstat_find_breakpoint (tp->control.stop_bpstat,
+ sm->location_breakpoint) != NULL
+ || (sm->caller_breakpoint != NULL
+ && bpstat_find_breakpoint (tp->control.stop_bpstat,
+ sm->caller_breakpoint) != NULL))
+ thread_fsm_set_finished (self);
+
+ return 1;
+}
+
+/* Implementation of the 'clean_up' FSM method for the
+ until(location)/advance commands. */
+
static void
-until_break_command_continuation (void *arg, int err)
+until_break_fsm_clean_up (struct thread_fsm *self)
{
- struct until_break_command_continuation_args *a = arg;
+ struct until_break_fsm *sm = (struct until_break_fsm *) self;
+
+ /* Clean up our temporary breakpoints. */
+ if (sm->location_breakpoint != NULL)
+ {
+ delete_breakpoint (sm->location_breakpoint);
+ sm->location_breakpoint = NULL;
+ }
+ if (sm->caller_breakpoint != NULL)
+ {
+ delete_breakpoint (sm->caller_breakpoint);
+ sm->caller_breakpoint = NULL;
+ }
+ delete_longjmp_breakpoint (sm->thread);
+}
+
+/* Implementation of the 'async_reply_reason' FSM method for the
+ until(location)/advance commands. */
- delete_breakpoint (a->breakpoint);
- if (a->breakpoint2)
- delete_breakpoint (a->breakpoint2);
- delete_longjmp_breakpoint (a->thread_num);
+static enum async_reply_reason
+until_break_fsm_async_reply_reason (struct thread_fsm *self)
+{
+ return EXEC_ASYNC_LOCATION_REACHED;
}
void
struct gdbarch *frame_gdbarch;
struct frame_id stack_frame_id;
struct frame_id caller_frame_id;
- struct breakpoint *breakpoint;
- struct breakpoint *breakpoint2 = NULL;
- struct cleanup *old_chain;
+ struct breakpoint *location_breakpoint;
+ struct breakpoint *caller_breakpoint = NULL;
+ struct cleanup *old_chain, *cleanup;
int thread;
struct thread_info *tp;
+ struct event_location *location;
+ struct until_break_fsm *sm;
- clear_proceed_status ();
+ clear_proceed_status (0);
/* Set a breakpoint where the user wants it and at return from
this function. */
+ location = string_to_event_location (&arg, current_language);
+ cleanup = make_cleanup_delete_event_location (location);
+
if (last_displayed_sal_is_valid ())
- sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE,
+ sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE,
get_last_displayed_symtab (),
get_last_displayed_line ());
else
- sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE,
+ sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE,
(struct symtab *) NULL, 0);
if (sals.nelts != 1)
if (frame_id_p (caller_frame_id))
{
struct symtab_and_line sal2;
+ struct gdbarch *caller_gdbarch;
sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0);
sal2.pc = frame_unwind_caller_pc (frame);
- breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame),
- sal2,
- caller_frame_id,
- bp_until);
- make_cleanup_delete_breakpoint (breakpoint2);
+ caller_gdbarch = frame_unwind_caller_arch (frame);
+ caller_breakpoint = set_momentary_breakpoint (caller_gdbarch,
+ sal2,
+ caller_frame_id,
+ bp_until);
+ make_cleanup_delete_breakpoint (caller_breakpoint);
set_longjmp_breakpoint (tp, caller_frame_id);
make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
if (anywhere)
/* If the user told us to continue until a specified location,
we don't specify a frame at which we need to stop. */
- breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
- null_frame_id, bp_until);
+ location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
+ null_frame_id, bp_until);
else
/* Otherwise, specify the selected frame, because we want to stop
only at the very same frame. */
- breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
- stack_frame_id, bp_until);
- make_cleanup_delete_breakpoint (breakpoint);
-
- proceed (-1, GDB_SIGNAL_DEFAULT, 0);
+ location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
+ stack_frame_id, bp_until);
+ make_cleanup_delete_breakpoint (location_breakpoint);
- /* If we are running asynchronously, and proceed call above has
- actually managed to start the target, arrange for breakpoints to
- be deleted when the target stops. Otherwise, we're already
- stopped and delete breakpoints via cleanup chain. */
+ sm = new_until_break_fsm (tp->num, location_breakpoint, caller_breakpoint);
+ tp->thread_fsm = &sm->thread_fsm;
- if (target_can_async_p () && is_running (inferior_ptid))
- {
- struct until_break_command_continuation_args *args;
- args = xmalloc (sizeof (*args));
+ discard_cleanups (old_chain);
- args->breakpoint = breakpoint;
- args->breakpoint2 = breakpoint2;
- args->thread_num = thread;
+ proceed (-1, GDB_SIGNAL_DEFAULT);
- discard_cleanups (old_chain);
- add_continuation (inferior_thread (),
- until_break_command_continuation, args,
- xfree);
- }
- else
- do_cleanups (old_chain);
+ do_cleanups (cleanup);
}
/* This function attempts to parse an optional "if <cond>" clause
loc_gdbarch = gdbarch;
describe_other_breakpoints (loc_gdbarch,
- sal.pspace, sal.pc, sal.section, -1);
- /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
- version for exception catchpoints, because two catchpoints
- used for different exception names will use the same address.
- In this case, a "breakpoint ... also set at..." warning is
- unproductive. Besides, the warning phrasing is also a bit
- inappropriate, we should use the word catchpoint, and tell
- the user what type of catchpoint it is. The above is good
- enough for now, though. */
- }
-
- init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops);
-
- b->enable_state = enabled ? bp_enabled : bp_disabled;
- b->disposition = tempflag ? disp_del : disp_donttouch;
- b->addr_string = addr_string;
- b->language = language_ada;
-}
-
-/* Splits the argument using space as delimiter. Returns an xmalloc'd
- filter list, or NULL if no filtering is required. */
-static VEC(int) *
-catch_syscall_split_args (char *arg)
-{
- VEC(int) *result = NULL;
- struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result);
-
- while (*arg != '\0')
- {
- int i, syscall_number;
- char *endptr;
- char cur_name[128];
- struct syscall s;
-
- /* Skip whitespace. */
- arg = skip_spaces (arg);
-
- for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i)
- cur_name[i] = arg[i];
- cur_name[i] = '\0';
- arg += i;
-
- /* Check if the user provided a syscall name or a number. */
- syscall_number = (int) strtol (cur_name, &endptr, 0);
- if (*endptr == '\0')
- get_syscall_by_number (syscall_number, &s);
- else
- {
- /* We have a name. Let's check if it's valid and convert it
- to a number. */
- get_syscall_by_name (cur_name, &s);
-
- if (s.number == UNKNOWN_SYSCALL)
- /* Here we have to issue an error instead of a warning,
- because GDB cannot do anything useful if there's no
- syscall number to be caught. */
- error (_("Unknown syscall name '%s'."), cur_name);
- }
-
- /* Ok, it's valid. */
- VEC_safe_push (int, result, s.number);
- }
-
- discard_cleanups (cleanup);
- return result;
-}
-
-/* Implement the "catch syscall" command. */
-
-static void
-catch_syscall_command_1 (char *arg, int from_tty,
- struct cmd_list_element *command)
-{
- int tempflag;
- VEC(int) *filter;
- struct syscall s;
- struct gdbarch *gdbarch = get_current_arch ();
-
- /* Checking if the feature if supported. */
- if (gdbarch_get_syscall_number_p (gdbarch) == 0)
- error (_("The feature 'catch syscall' is not supported on \
-this architecture yet."));
-
- tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
-
- arg = skip_spaces (arg);
-
- /* We need to do this first "dummy" translation in order
- to get the syscall XML file loaded or, most important,
- to display a warning to the user if there's no XML file
- for his/her architecture. */
- get_syscall_by_number (0, &s);
-
- /* The allowed syntax is:
- catch syscall
- catch syscall <name | number> [<name | number> ... <name | number>]
-
- Let's check if there's a syscall name. */
+ sal.pspace, sal.pc, sal.section, -1);
+ /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
+ version for exception catchpoints, because two catchpoints
+ used for different exception names will use the same address.
+ In this case, a "breakpoint ... also set at..." warning is
+ unproductive. Besides, the warning phrasing is also a bit
+ inappropriate, we should use the word catchpoint, and tell
+ the user what type of catchpoint it is. The above is good
+ enough for now, though. */
+ }
- if (arg != NULL)
- filter = catch_syscall_split_args (arg);
- else
- filter = NULL;
+ init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops);
- create_syscall_event_catchpoint (tempflag, filter,
- &catch_syscall_breakpoint_ops);
+ b->enable_state = enabled ? bp_enabled : bp_disabled;
+ b->disposition = tempflag ? disp_del : disp_donttouch;
+ b->location = string_to_event_location (&addr_string,
+ language_def (language_ada));
+ b->language = language_ada;
}
static void
static int
compare_breakpoints (const void *a, const void *b)
{
- const breakpoint_p *ba = a;
+ const breakpoint_p *ba = (const breakpoint_p *) a;
uintptr_t ua = (uintptr_t) *ba;
- const breakpoint_p *bb = b;
+ const breakpoint_p *bb = (const breakpoint_p *) b;
uintptr_t ub = (uintptr_t) *bb;
if ((*ba)->number < (*bb)->number)
}
else
{
- sals.sals = (struct symtab_and_line *)
- xmalloc (sizeof (struct symtab_and_line));
+ sals.sals = XNEW (struct symtab_and_line);
make_cleanup (xfree, sals.sals);
init_sal (&sal); /* Initialize to zeroes. */
/* A comparison function for bp_location AP and BP being interfaced to
qsort. Sort elements primarily by their ADDRESS (no matter what
does breakpoint_address_is_meaningful say for its OWNER),
- secondarily by ordering first bp_permanent OWNERed elements and
+ secondarily by ordering first permanent elements and
terciarily just ensuring the array is sorted stable way despite
qsort being an unstable algorithm. */
static int
bp_location_compare (const void *ap, const void *bp)
{
- struct bp_location *a = *(void **) ap;
- struct bp_location *b = *(void **) bp;
- /* A and B come from existing breakpoints having non-NULL OWNER. */
- int a_perm = a->owner->enable_state == bp_permanent;
- int b_perm = b->owner->enable_state == bp_permanent;
+ const struct bp_location *a = *(const struct bp_location **) ap;
+ const struct bp_location *b = *(const struct bp_location **) bp;
if (a->address != b->address)
return (a->address > b->address) - (a->address < b->address);
- (a->pspace->num < b->pspace->num));
/* Sort permanent breakpoints first. */
- if (a_perm != b_perm)
- return (a_perm < b_perm) - (a_perm > b_perm);
+ if (a->permanent != b->permanent)
+ return (a->permanent < b->permanent) - (a->permanent > b->permanent);
/* Make the internal GDB representation stable across GDB runs
where A and B memory inside GDB can differ. Breakpoint locations of
{
struct breakpoint *b;
struct cleanup *old_chain;
-
- if (!target_can_download_tracepoint ())
- return;
+ enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN;
old_chain = save_current_space_and_thread ();
: !may_insert_tracepoints))
continue;
+ if (can_download_tracepoint == TRIBOOL_UNKNOWN)
+ {
+ if (target_can_download_tracepoint ())
+ can_download_tracepoint = TRIBOOL_TRUE;
+ else
+ can_download_tracepoint = TRIBOOL_FALSE;
+ }
+
+ if (can_download_tracepoint == TRIBOOL_FALSE)
+ break;
+
for (bl = b->loc; bl; bl = bl->next)
{
/* In tracepoint, locations are _never_ duplicated, so
}
}
}
+/* Called whether new breakpoints are created, or existing breakpoints
+ deleted, to update the global location list and recompute which
+ locations are duplicate of which.
-/* If SHOULD_INSERT is false, do not insert any breakpoint locations
- into the inferior, only remove already-inserted locations that no
- longer should be inserted. Functions that delete a breakpoint or
- breakpoints should pass false, so that deleting a breakpoint
- doesn't have the side effect of inserting the locations of other
- breakpoints that are marked not-inserted, but should_be_inserted
- returns true on them.
-
- This behaviour is useful is situations close to tear-down -- e.g.,
- after an exec, while the target still has execution, but breakpoint
- shadows of the previous executable image should *NOT* be restored
- to the new image; or before detaching, where the target still has
- execution and wants to delete breakpoints from GDB's lists, and all
- breakpoints had already been removed from the inferior. */
+ The INSERT_MODE flag determines whether locations may not, may, or
+ shall be inserted now. See 'enum ugll_insert_mode' for more
+ info. */
static void
-update_global_location_list (int should_insert)
+update_global_location_list (enum ugll_insert_mode insert_mode)
{
struct breakpoint *b;
struct bp_location **locp, *loc;
for (loc = b->loc; loc; loc = loc->next)
bp_location_count++;
- bp_location = xmalloc (sizeof (*bp_location) * bp_location_count);
+ bp_location = XNEWVEC (struct bp_location *, bp_location_count);
locp = bp_location;
ALL_BREAKPOINTS (b)
for (loc = b->loc; loc; loc = loc->next)
if (!found_object)
{
- if (removed && non_stop
- && breakpoint_address_is_meaningful (old_loc->owner)
- && !is_hardware_watchpoint (old_loc->owner))
+ if (removed && target_is_non_stop_p ()
+ && need_moribund_for_location_type (old_loc))
{
/* This location was removed from the target. In
non-stop mode, a race condition is possible where
continue;
}
- /* Permanent breakpoint should always be inserted. */
- if (b->enable_state == bp_permanent && ! loc->inserted)
- internal_error (__FILE__, __LINE__,
- _("allegedly permanent breakpoint is not "
- "actually inserted"));
-
if (b->type == bp_hardware_watchpoint)
loc_first_p = &wp_loc_first;
else if (b->type == bp_read_watchpoint)
/* Clear the condition modification flag. */
loc->condition_changed = condition_unchanged;
-
- if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted
- && b->enable_state != bp_permanent)
- internal_error (__FILE__, __LINE__,
- _("another breakpoint was inserted on top of "
- "a permanent breakpoint"));
}
- if (breakpoints_always_inserted_mode ()
- && (have_live_inferiors ()
- || (gdbarch_has_global_breakpoints (target_gdbarch ()))))
+ if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ())
{
- if (should_insert)
+ if (insert_mode != UGLL_DONT_INSERT)
insert_breakpoint_locations ();
else
{
- /* Though should_insert is false, we may need to update conditions
- on the target's side if it is evaluating such conditions. We
+ /* Even though the caller told us to not insert new
+ locations, we may still need to update conditions on the
+ target's side of breakpoints that were already inserted
+ if the target is evaluating breakpoint conditions. We
only update conditions for locations that are marked
"needs_update". */
update_inserted_breakpoint_locations ();
}
}
- if (should_insert)
+ if (insert_mode != UGLL_DONT_INSERT)
download_tracepoint_locations ();
do_cleanups (cleanups);
}
static void
-update_global_location_list_nothrow (int inserting)
+update_global_location_list_nothrow (enum ugll_insert_mode insert_mode)
{
- volatile struct gdb_exception e;
- TRY_CATCH (e, RETURN_MASK_ERROR)
- update_global_location_list (inserting);
+ TRY
+ {
+ update_global_location_list (insert_mode);
+ }
+ CATCH (e, RETURN_MASK_ERROR)
+ {
+ }
+ END_CATCH
}
/* Clear BKP from a BPS. */
static int
bpstat_remove_breakpoint_callback (struct thread_info *th, void *data)
{
- struct breakpoint *bpt = data;
+ struct breakpoint *bpt = (struct breakpoint *) data;
bpstat_remove_bp_location (th->control.stop_bpstat, bpt);
return 0;
single string. */
if (b->loc == NULL)
{
- printf_filtered (_(" (%s) pending."), b->addr_string);
+ /* For pending locations, the output differs slightly based
+ on b->extra_string. If this is non-NULL, it contains either
+ a condition or dprintf arguments. */
+ if (b->extra_string == NULL)
+ {
+ printf_filtered (_(" (%s) pending."),
+ event_location_to_string (b->location));
+ }
+ else if (b->type == bp_dprintf)
+ {
+ printf_filtered (_(" (%s,%s) pending."),
+ event_location_to_string (b->location),
+ b->extra_string);
+ }
+ else
+ {
+ printf_filtered (_(" (%s %s) pending."),
+ event_location_to_string (b->location),
+ b->extra_string);
+ }
}
else
{
/* This is not ideal, but each location may have a
different file name, and this at least reflects the
real situation somewhat. */
- printf_filtered (": %s.", b->addr_string);
+ printf_filtered (": %s.",
+ event_location_to_string (b->location));
}
if (b->loc->next)
decref_counted_command_line (&self->commands);
xfree (self->cond_string);
xfree (self->extra_string);
- xfree (self->addr_string);
xfree (self->filter);
- xfree (self->addr_string_range_end);
+ delete_event_location (self->location);
+ delete_event_location (self->location_range_end);
}
static struct bp_location *
}
static void
-base_breakpoint_create_sals_from_address (char **arg,
- struct linespec_result *canonical,
- enum bptype type_wanted,
- char *addr_start,
- char **copy_arg)
+base_breakpoint_create_sals_from_location
+ (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted)
{
internal_error_pure_virtual_called ();
}
}
static void
-base_breakpoint_decode_linespec (struct breakpoint *b, char **s,
+base_breakpoint_decode_location (struct breakpoint *b,
+ const struct event_location *location,
struct symtabs_and_lines *sals)
{
internal_error_pure_virtual_called ();
base_breakpoint_print_one_detail,
base_breakpoint_print_mention,
base_breakpoint_print_recreate,
- base_breakpoint_create_sals_from_address,
+ base_breakpoint_create_sals_from_location,
base_breakpoint_create_breakpoints_sal,
- base_breakpoint_decode_linespec,
+ base_breakpoint_decode_location,
base_breakpoint_explains_signal,
base_breakpoint_after_condition_true,
};
bkpt_re_set (struct breakpoint *b)
{
/* FIXME: is this still reachable? */
- if (b->addr_string == NULL)
+ if (event_location_empty_p (b->location))
{
- /* Anything without a string can't be re-set. */
+ /* Anything without a location can't be re-set. */
delete_breakpoint (b);
return;
}
bkpt_insert_location (struct bp_location *bl)
{
if (bl->loc_type == bp_loc_hardware_breakpoint)
- return target_insert_hw_breakpoint (bl->gdbarch,
- &bl->target_info);
+ return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info);
else
- return target_insert_breakpoint (bl->gdbarch,
- &bl->target_info);
+ return target_insert_breakpoint (bl->gdbarch, &bl->target_info);
}
static int
return 1;
}
+static int
+dprintf_breakpoint_hit (const struct bp_location *bl,
+ struct address_space *aspace, CORE_ADDR bp_addr,
+ const struct target_waitstatus *ws)
+{
+ if (dprintf_style == dprintf_style_agent
+ && target_can_run_breakpoint_commands ())
+ {
+ /* An agent-style dprintf never causes a stop. If we see a trap
+ for this address it must be for a breakpoint that happens to
+ be set at the same address. */
+ return 0;
+ }
+
+ return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws);
+}
+
static int
bkpt_resources_needed (const struct bp_location *bl)
{
internal_error (__FILE__, __LINE__,
_("unhandled breakpoint type %d"), (int) tp->type);
- fprintf_unfiltered (fp, " %s", tp->addr_string);
+ fprintf_unfiltered (fp, " %s",
+ event_location_to_string (tp->location));
+
+ /* Print out extra_string if this breakpoint is pending. It might
+ contain, for example, conditions that were set by the user. */
+ if (tp->loc == NULL && tp->extra_string != NULL)
+ fprintf_unfiltered (fp, " %s", tp->extra_string);
+
print_recreate_thread (tp, fp);
}
static void
-bkpt_create_sals_from_address (char **arg,
- struct linespec_result *canonical,
- enum bptype type_wanted,
- char *addr_start, char **copy_arg)
+bkpt_create_sals_from_location (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted)
{
- create_sals_from_address_default (arg, canonical, type_wanted,
- addr_start, copy_arg);
+ create_sals_from_location_default (location, canonical, type_wanted);
}
static void
}
static void
-bkpt_decode_linespec (struct breakpoint *b, char **s,
+bkpt_decode_location (struct breakpoint *b,
+ const struct event_location *location,
struct symtabs_and_lines *sals)
{
- decode_linespec_default (b, s, sals);
+ decode_location_default (b, location, sals);
}
/* Virtual table for internal breakpoints. */
static enum print_stop_action
momentary_bkpt_print_it (bpstat bs)
{
- struct ui_out *uiout = current_uiout;
-
- if (ui_out_is_mi_like_p (uiout))
- {
- struct breakpoint *b = bs->breakpoint_at;
-
- switch (b->type)
- {
- case bp_finish:
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED));
- break;
-
- case bp_until:
- ui_out_field_string
- (uiout, "reason",
- async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED));
- break;
- }
- }
-
return PRINT_UNKNOWN;
}
{
/* The insertion was successful, now let's set the probe's semaphore
if needed. */
- bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch);
+ if (bl->probe.probe->pops->set_semaphore != NULL)
+ bl->probe.probe->pops->set_semaphore (bl->probe.probe,
+ bl->probe.objfile,
+ bl->gdbarch);
}
return v;
bkpt_probe_remove_location (struct bp_location *bl)
{
/* Let's clear the semaphore before removing the location. */
- bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch);
+ if (bl->probe.probe->pops->clear_semaphore != NULL)
+ bl->probe.probe->pops->clear_semaphore (bl->probe.probe,
+ bl->probe.objfile,
+ bl->gdbarch);
return bkpt_remove_location (bl);
}
static void
-bkpt_probe_create_sals_from_address (char **arg,
- struct linespec_result *canonical,
- enum bptype type_wanted,
- char *addr_start, char **copy_arg)
+bkpt_probe_create_sals_from_location (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted)
{
struct linespec_sals lsal;
- lsal.sals = parse_probes (arg, canonical);
-
- *copy_arg = xstrdup (canonical->addr_string);
- lsal.canonical = xstrdup (*copy_arg);
-
+ lsal.sals = parse_probes (location, canonical);
+ lsal.canonical = xstrdup (event_location_to_string (canonical->location));
VEC_safe_push (linespec_sals, canonical->sals, &lsal);
}
static void
-bkpt_probe_decode_linespec (struct breakpoint *b, char **s,
+bkpt_probe_decode_location (struct breakpoint *b,
+ const struct event_location *location,
struct symtabs_and_lines *sals)
{
- *sals = parse_probes (s, NULL);
+ *sals = parse_probes (location, NULL);
if (!sals->sals)
error (_("probe not found"));
}
internal_error (__FILE__, __LINE__,
_("unhandled tracepoint type %d"), (int) self->type);
- fprintf_unfiltered (fp, " %s", self->addr_string);
+ fprintf_unfiltered (fp, " %s",
+ event_location_to_string (self->location));
print_recreate_thread (self, fp);
if (tp->pass_count)
}
static void
-tracepoint_create_sals_from_address (char **arg,
- struct linespec_result *canonical,
- enum bptype type_wanted,
- char *addr_start, char **copy_arg)
+tracepoint_create_sals_from_location (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted)
{
- create_sals_from_address_default (arg, canonical, type_wanted,
- addr_start, copy_arg);
+ create_sals_from_location_default (location, canonical, type_wanted);
}
static void
}
static void
-tracepoint_decode_linespec (struct breakpoint *b, char **s,
+tracepoint_decode_location (struct breakpoint *b,
+ const struct event_location *location,
struct symtabs_and_lines *sals)
{
- decode_linespec_default (b, s, sals);
+ decode_location_default (b, location, sals);
}
struct breakpoint_ops tracepoint_breakpoint_ops;
static probe. */
static void
-tracepoint_probe_create_sals_from_address (char **arg,
- struct linespec_result *canonical,
- enum bptype type_wanted,
- char *addr_start, char **copy_arg)
+tracepoint_probe_create_sals_from_location
+ (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted)
{
/* We use the same method for breakpoint on probes. */
- bkpt_probe_create_sals_from_address (arg, canonical, type_wanted,
- addr_start, copy_arg);
+ bkpt_probe_create_sals_from_location (location, canonical, type_wanted);
}
static void
-tracepoint_probe_decode_linespec (struct breakpoint *b, char **s,
+tracepoint_probe_decode_location (struct breakpoint *b,
+ const struct event_location *location,
struct symtabs_and_lines *sals)
{
/* We use the same method for breakpoint on probes. */
- bkpt_probe_decode_linespec (b, s, sals);
+ bkpt_probe_decode_location (b, location, sals);
}
static struct breakpoint_ops tracepoint_probe_breakpoint_ops;
{
breakpoint_re_set_default (b);
- /* This breakpoint could have been pending, and be resolved now, and
- if so, we should now have the extra string. If we don't, the
- dprintf was malformed when created, but we couldn't tell because
- we can't extract the extra string until the location is
- resolved. */
- if (b->loc != NULL && b->extra_string == NULL)
- error (_("Format string required"));
+ /* extra_string should never be non-NULL for dprintf. */
+ gdb_assert (b->extra_string != NULL);
/* 1 - connect to target 1, that can run breakpoint commands.
2 - create a dprintf, which resolves fine.
static void
dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp)
{
- fprintf_unfiltered (fp, "dprintf %s%s", tp->addr_string,
+ fprintf_unfiltered (fp, "dprintf %s,%s",
+ event_location_to_string (tp->location),
tp->extra_string);
print_recreate_thread (tp, fp);
}
markers (`-m'). */
static void
-strace_marker_create_sals_from_address (char **arg,
- struct linespec_result *canonical,
- enum bptype type_wanted,
- char *addr_start, char **copy_arg)
+strace_marker_create_sals_from_location (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted)
{
struct linespec_sals lsal;
+ const char *arg_start, *arg;
+ char *str;
+ struct cleanup *cleanup;
- lsal.sals = decode_static_tracepoint_spec (arg);
+ arg = arg_start = get_linespec_location (location);
+ lsal.sals = decode_static_tracepoint_spec (&arg);
- *copy_arg = savestring (addr_start, *arg - addr_start);
+ str = savestring (arg_start, arg - arg_start);
+ cleanup = make_cleanup (xfree, str);
+ canonical->location = new_linespec_location (&str);
+ do_cleanups (cleanup);
- canonical->addr_string = xstrdup (*copy_arg);
- lsal.canonical = xstrdup (*copy_arg);
+ lsal.canonical = xstrdup (event_location_to_string (canonical->location));
VEC_safe_push (linespec_sals, canonical->sals, &lsal);
}
struct symtabs_and_lines expanded;
struct tracepoint *tp;
struct cleanup *old_chain;
- char *addr_string;
+ struct event_location *location;
expanded.nelts = 1;
expanded.sals = &lsal->sals.sals[i];
- addr_string = xstrdup (canonical->addr_string);
- old_chain = make_cleanup (xfree, addr_string);
+ location = copy_event_location (canonical->location);
+ old_chain = make_cleanup_delete_event_location (location);
tp = XCNEW (struct tracepoint);
init_breakpoint_sal (&tp->base, gdbarch, expanded,
- addr_string, NULL,
+ location, NULL,
cond_string, extra_string,
type_wanted, disposition,
thread, task, ignore_count, ops,
}
static void
-strace_marker_decode_linespec (struct breakpoint *b, char **s,
+strace_marker_decode_location (struct breakpoint *b,
+ const struct event_location *location,
struct symtabs_and_lines *sals)
{
struct tracepoint *tp = (struct tracepoint *) b;
+ const char *s = get_linespec_location (location);
- *sals = decode_static_tracepoint_spec (s);
+ *sals = decode_static_tracepoint_spec (&s);
if (sals->nelts > tp->static_trace_marker_id_idx)
{
sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx];
itself, since remove_breakpoint looks at location's owner. It
might be better design to have location completely
self-contained, but it's not the case now. */
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
bpt->ops->dtor (bpt);
/* On the chance that someone will soon try again to delete this
static void
do_delete_breakpoint_cleanup (void *b)
{
- delete_breakpoint (b);
+ delete_breakpoint ((struct breakpoint *) b);
}
struct cleanup *
struct symbol *sym;
struct static_tracepoint_marker *tpmarker;
struct ui_out *uiout = current_uiout;
+ struct explicit_location explicit_loc;
tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0);
b->loc->line_number = sal2.line;
b->loc->symtab = sym != NULL ? sal2.symtab : NULL;
- xfree (b->addr_string);
- b->addr_string = xstrprintf ("%s:%d",
- symtab_to_filename_for_display (sal2.symtab),
- b->loc->line_number);
+ delete_event_location (b->location);
+ initialize_explicit_location (&explicit_loc);
+ explicit_loc.source_filename
+ = ASTRDUP (symtab_to_filename_for_display (sal2.symtab));
+ explicit_loc.line_offset.offset = b->loc->line_number;
+ explicit_loc.line_offset.sign = LINE_OFFSET_NONE;
+ b->location = new_explicit_location (&explicit_loc);
/* Might be nice to check if function changed, and warn if
so. */
/* Ranged breakpoints have only one start location and one end
location. */
b->enable_state = bp_disabled;
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
printf_unfiltered (_("Could not reset ranged breakpoint %d: "
"multiple locations found\n"),
b->number);
if (b->cond_string != NULL)
{
const char *s;
- volatile struct gdb_exception e;
s = b->cond_string;
- TRY_CATCH (e, RETURN_MASK_ERROR)
+ TRY
{
new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc,
block_for_pc (sals.sals[i].pc),
0);
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ERROR)
{
warning (_("failed to reevaluate condition "
"for breakpoint %d: %s"),
b->number, e.message);
new_loc->enabled = 0;
}
+ END_CATCH
}
if (sals_end.nelts)
}
}
- /* Update locations of permanent breakpoints. */
- if (b->enable_state == bp_permanent)
- make_breakpoint_permanent (b);
-
/* If possible, carry over 'disable' status from existing
breakpoints. */
{
if (!locations_are_equal (existing_locations, b->loc))
observer_notify_breakpoint_modified (b);
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
}
-/* Find the SaL locations corresponding to the given ADDR_STRING.
+/* Find the SaL locations corresponding to the given LOCATION.
On return, FOUND will be 1 if any SaL was found, zero otherwise. */
static struct symtabs_and_lines
-addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found)
+location_to_sals (struct breakpoint *b, struct event_location *location,
+ int *found)
{
- char *s;
struct symtabs_and_lines sals = {0};
- volatile struct gdb_exception e;
+ struct gdb_exception exception = exception_none;
gdb_assert (b->ops != NULL);
- s = addr_string;
- TRY_CATCH (e, RETURN_MASK_ERROR)
+ TRY
{
- b->ops->decode_linespec (b, &s, &sals);
+ b->ops->decode_location (b, location, &sals);
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ERROR)
{
int not_found_and_ok = 0;
+
+ exception = e;
+
/* For pending breakpoints, it's expected that parsing will
fail until the right shared library is loaded. User has
already told to create pending breakpoints and don't need
throw_exception (e);
}
}
+ END_CATCH
- if (e.reason == 0 || e.error != NOT_FOUND_ERROR)
+ if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR)
{
int i;
for (i = 0; i < sals.nelts; ++i)
resolve_sal_pc (&sals.sals[i]);
- if (b->condition_not_parsed && s && s[0])
+ if (b->condition_not_parsed && b->extra_string != NULL)
{
char *cond_string, *extra_string;
int thread, task;
- find_condition_and_thread (s, sals.sals[0].pc,
+ find_condition_and_thread (b->extra_string, sals.sals[0].pc,
&cond_string, &thread, &task,
&extra_string);
+ gdb_assert (b->cond_string == NULL);
if (cond_string)
b->cond_string = cond_string;
b->thread = thread;
b->task = task;
if (extra_string)
- b->extra_string = extra_string;
+ {
+ xfree (b->extra_string);
+ b->extra_string = extra_string;
+ }
b->condition_not_parsed = 0;
}
struct symtabs_and_lines expanded = {0};
struct symtabs_and_lines expanded_end = {0};
- sals = addr_string_to_sals (b, b->addr_string, &found);
+ sals = location_to_sals (b, b->location, &found);
if (found)
{
make_cleanup (xfree, sals.sals);
expanded = sals;
}
- if (b->addr_string_range_end)
+ if (b->location_range_end != NULL)
{
- sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found);
+ sals_end = location_to_sals (b, b->location_range_end, &found);
if (found)
{
make_cleanup (xfree, sals_end.sals);
calls parse_breakpoint_sals. Return 1 for success, zero for failure. */
static void
-create_sals_from_address_default (char **arg,
- struct linespec_result *canonical,
- enum bptype type_wanted,
- char *addr_start, char **copy_arg)
+create_sals_from_location_default (const struct event_location *location,
+ struct linespec_result *canonical,
+ enum bptype type_wanted)
{
- parse_breakpoint_sals (arg, canonical);
+ parse_breakpoint_sals (location, canonical);
}
/* Call create_breakpoints_sal for the given arguments. This is the default
}
/* Decode the line represented by S by calling decode_line_full. This is the
- default function for the `decode_linespec' method of breakpoint_ops. */
+ default function for the `decode_location' method of breakpoint_ops. */
static void
-decode_linespec_default (struct breakpoint *b, char **s,
+decode_location_default (struct breakpoint *b,
+ const struct event_location *location,
struct symtabs_and_lines *sals)
{
struct linespec_result canonical;
init_linespec_result (&canonical);
- decode_line_full (s, DECODE_LINE_FUNFIRSTLINE,
+ decode_line_full (location, DECODE_LINE_FUNFIRSTLINE,
(struct symtab *) NULL, 0,
&canonical, multiple_symbols_all,
b->filter);
int match;
struct get_number_or_range_state state;
- if (args == 0)
+ if (args == 0 || *args == '\0')
error_no_arg (_("one or more breakpoint numbers"));
init_number_or_range (&state, args);
while (!state.finished)
{
- char *p = state.string;
+ const char *p = state.string;
match = 0;
if (bpt->type == bp_watchpoint_scope)
return;
- /* You can't disable permanent breakpoints. */
- if (bpt->enable_state == bp_permanent)
- return;
-
bpt->enable_state = bp_disabled;
/* Mark breakpoint locations modified. */
target_disable_tracepoint (location);
}
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
observer_notify_breakpoint_modified (bpt);
}
&& is_tracepoint (loc->owner))
target_disable_tracepoint (loc);
}
- update_global_location_list (0);
+ update_global_location_list (UGLL_DONT_INSERT);
}
else
map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL);
if (is_watchpoint (bpt))
{
/* Initialize it just to avoid a GCC false warning. */
- enum enable_state orig_enable_state = 0;
- volatile struct gdb_exception e;
+ enum enable_state orig_enable_state = bp_disabled;
- TRY_CATCH (e, RETURN_MASK_ALL)
+ TRY
{
struct watchpoint *w = (struct watchpoint *) bpt;
bpt->enable_state = bp_enabled;
update_watchpoint (w, 1 /* reparse */);
}
- if (e.reason < 0)
+ CATCH (e, RETURN_MASK_ALL)
{
bpt->enable_state = orig_enable_state;
exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "),
bpt->number);
return;
}
+ END_CATCH
}
- if (bpt->enable_state != bp_permanent)
- bpt->enable_state = bp_enabled;
-
bpt->enable_state = bp_enabled;
/* Mark breakpoint locations modified. */
bpt->disposition = disposition;
bpt->enable_count = count;
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
observer_notify_breakpoint_modified (bpt);
}
&& is_tracepoint (loc->owner))
target_enable_tracepoint (loc);
}
- update_global_location_list (1);
+ update_global_location_list (UGLL_MAY_INSERT);
}
else
map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL);
static void
enable_count_command (char *args, int from_tty)
{
- int count = get_number (&args);
+ int count;
+
+ if (args == NULL)
+ error_no_arg (_("hit count"));
+
+ count = get_number (&args);
map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count);
}
}
}
-/* Create and insert a raw software breakpoint at PC. Return an
- identifier, which should be used to remove the breakpoint later.
- In general, places which call this should be using something on the
- breakpoint chain instead; this function should be eliminated
- someday. */
-
-void *
-deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch,
- struct address_space *aspace, CORE_ADDR pc)
-{
- struct bp_target_info *bp_tgt;
-
- bp_tgt = XCNEW (struct bp_target_info);
-
- bp_tgt->placed_address_space = aspace;
- bp_tgt->placed_address = pc;
-
- if (target_insert_breakpoint (gdbarch, bp_tgt) != 0)
- {
- /* Could not insert the breakpoint. */
- xfree (bp_tgt);
- return NULL;
- }
-
- return bp_tgt;
-}
-
-/* Remove a breakpoint BP inserted by
- deprecated_insert_raw_breakpoint. */
-
-int
-deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp)
-{
- struct bp_target_info *bp_tgt = bp;
- int ret;
-
- ret = target_remove_breakpoint (gdbarch, bp_tgt);
- xfree (bp_tgt);
-
- return ret;
-}
-
-/* One (or perhaps two) breakpoints used for software single
- stepping. */
-
-static void *single_step_breakpoints[2];
-static struct gdbarch *single_step_gdbarch[2];
-
/* Create and insert a breakpoint for software single step. */
void
struct address_space *aspace,
CORE_ADDR next_pc)
{
- void **bpt_p;
+ struct thread_info *tp = inferior_thread ();
+ struct symtab_and_line sal;
+ CORE_ADDR pc = next_pc;
- if (single_step_breakpoints[0] == NULL)
- {
- bpt_p = &single_step_breakpoints[0];
- single_step_gdbarch[0] = gdbarch;
- }
- else
+ if (tp->control.single_step_breakpoints == NULL)
{
- gdb_assert (single_step_breakpoints[1] == NULL);
- bpt_p = &single_step_breakpoints[1];
- single_step_gdbarch[1] = gdbarch;
+ tp->control.single_step_breakpoints
+ = new_single_step_breakpoint (tp->num, gdbarch);
}
- /* NOTE drow/2006-04-11: A future improvement to this function would
- be to only create the breakpoints once, and actually put them on
- the breakpoint chain. That would let us use set_raw_breakpoint.
- We could adjust the addresses each time they were needed. Doing
- this requires corresponding changes elsewhere where single step
- breakpoints are handled, however. So, for now, we use this. */
+ sal = find_pc_line (pc, 0);
+ sal.pc = pc;
+ sal.section = find_pc_overlay (pc);
+ sal.explicit_pc = 1;
+ add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal);
- *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc);
- if (*bpt_p == NULL)
- error (_("Could not insert single-step breakpoint at %s"),
- paddress (gdbarch, next_pc));
+ update_global_location_list (UGLL_INSERT);
}
-/* Check if the breakpoints used for software single stepping
- were inserted or not. */
+/* See breakpoint.h. */
int
-single_step_breakpoints_inserted (void)
-{
- return (single_step_breakpoints[0] != NULL
- || single_step_breakpoints[1] != NULL);
-}
-
-/* Remove and delete any breakpoints used for software single step. */
-
-void
-remove_single_step_breakpoints (void)
-{
- gdb_assert (single_step_breakpoints[0] != NULL);
-
- /* See insert_single_step_breakpoint for more about this deprecated
- call. */
- deprecated_remove_raw_breakpoint (single_step_gdbarch[0],
- single_step_breakpoints[0]);
- single_step_gdbarch[0] = NULL;
- single_step_breakpoints[0] = NULL;
-
- if (single_step_breakpoints[1] != NULL)
- {
- deprecated_remove_raw_breakpoint (single_step_gdbarch[1],
- single_step_breakpoints[1]);
- single_step_gdbarch[1] = NULL;
- single_step_breakpoints[1] = NULL;
- }
-}
-
-/* Delete software single step breakpoints without removing them from
- the inferior. This is intended to be used if the inferior's address
- space where they were inserted is already gone, e.g. after exit or
- exec. */
-
-void
-cancel_single_step_breakpoints (void)
+breakpoint_has_location_inserted_here (struct breakpoint *bp,
+ struct address_space *aspace,
+ CORE_ADDR pc)
{
- int i;
-
- for (i = 0; i < 2; i++)
- if (single_step_breakpoints[i])
- {
- xfree (single_step_breakpoints[i]);
- single_step_breakpoints[i] = NULL;
- single_step_gdbarch[i] = NULL;
- }
-}
-
-/* Detach software single-step breakpoints from INFERIOR_PTID without
- removing them. */
+ struct bp_location *loc;
-static void
-detach_single_step_breakpoints (void)
-{
- int i;
+ for (loc = bp->loc; loc != NULL; loc = loc->next)
+ if (loc->inserted
+ && breakpoint_location_address_match (loc, aspace, pc))
+ return 1;
- for (i = 0; i < 2; i++)
- if (single_step_breakpoints[i])
- target_remove_breakpoint (single_step_gdbarch[i],
- single_step_breakpoints[i]);
+ return 0;
}
/* Check whether a software single-step breakpoint is inserted at
PC. */
-static int
-single_step_breakpoint_inserted_here_p (struct address_space *aspace,
+int
+single_step_breakpoint_inserted_here_p (struct address_space *aspace,
CORE_ADDR pc)
{
- int i;
+ struct breakpoint *bpt;
- for (i = 0; i < 2; i++)
+ ALL_BREAKPOINTS (bpt)
{
- struct bp_target_info *bp_tgt = single_step_breakpoints[i];
- if (bp_tgt
- && breakpoint_address_match (bp_tgt->placed_address_space,
- bp_tgt->placed_address,
- aspace, pc))
+ if (bpt->type == bp_single_step
+ && breakpoint_has_location_inserted_here (bpt, aspace, pc))
return 1;
}
-
- return 0;
-}
-
-/* Returns 0 if 'bp' is NOT a syscall catchpoint,
- non-zero otherwise. */
-static int
-is_syscall_catchpoint_enabled (struct breakpoint *bp)
-{
- if (syscall_catchpoint_p (bp)
- && bp->enable_state != bp_disabled
- && bp->enable_state != bp_call_disabled)
- return 1;
- else
- return 0;
-}
-
-int
-catch_syscall_enabled (void)
-{
- struct catch_syscall_inferior_data *inf_data
- = get_catch_syscall_inferior_data (current_inferior ());
-
- return inf_data->total_syscalls_count != 0;
-}
-
-int
-catching_syscall_number (int syscall_number)
-{
- struct breakpoint *bp;
-
- ALL_BREAKPOINTS (bp)
- if (is_syscall_catchpoint_enabled (bp))
- {
- struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp;
-
- if (c->syscalls_to_be_caught)
- {
- int i, iter;
- for (i = 0;
- VEC_iterate (int, c->syscalls_to_be_caught, i, iter);
- i++)
- if (syscall_number == iter)
- return 1;
- }
- else
- return 1;
- }
-
return 0;
}
-/* Complete syscall names. Used by "catch syscall". */
-static VEC (char_ptr) *
-catch_syscall_completer (struct cmd_list_element *cmd,
- const char *text, const char *word)
-{
- const char **list = get_syscall_names ();
- VEC (char_ptr) *retlist
- = (list == NULL) ? NULL : complete_on_enum (list, word, word);
-
- xfree (list);
- return retlist;
-}
-
/* Tracepoint-specific operations. */
/* Set tracepoint count to NUM. */
trace_command (char *arg, int from_tty)
{
struct breakpoint_ops *ops;
- const char *arg_cp = arg;
+ struct event_location *location;
+ struct cleanup *back_to;
- if (arg && probe_linespec_to_ops (&arg_cp))
+ location = string_to_event_location (&arg, current_language);
+ back_to = make_cleanup_delete_event_location (location);
+ if (location != NULL
+ && event_location_type (location) == PROBE_LOCATION)
ops = &tracepoint_probe_breakpoint_ops;
else
ops = &tracepoint_breakpoint_ops;
create_breakpoint (get_current_arch (),
- arg,
- NULL, 0, NULL, 1 /* parse arg */,
+ location,
+ NULL, 0, arg, 1 /* parse arg */,
0 /* tempflag */,
bp_tracepoint /* type_wanted */,
0 /* Ignore count */,
from_tty,
1 /* enabled */,
0 /* internal */, 0);
+ do_cleanups (back_to);
}
static void
ftrace_command (char *arg, int from_tty)
{
+ struct event_location *location;
+ struct cleanup *back_to;
+
+ location = string_to_event_location (&arg, current_language);
+ back_to = make_cleanup_delete_event_location (location);
create_breakpoint (get_current_arch (),
- arg,
- NULL, 0, NULL, 1 /* parse arg */,
+ location,
+ NULL, 0, arg, 1 /* parse arg */,
0 /* tempflag */,
bp_fast_tracepoint /* type_wanted */,
0 /* Ignore count */,
from_tty,
1 /* enabled */,
0 /* internal */, 0);
+ do_cleanups (back_to);
}
/* strace command implementation. Creates a static tracepoint. */
strace_command (char *arg, int from_tty)
{
struct breakpoint_ops *ops;
+ struct event_location *location;
+ struct cleanup *back_to;
/* Decide if we are dealing with a static tracepoint marker (`-m'),
or with a normal static tracepoint. */
- if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2]))
- ops = &strace_marker_breakpoint_ops;
+ if (arg && startswith (arg, "-m") && isspace (arg[2]))
+ {
+ ops = &strace_marker_breakpoint_ops;
+ location = new_linespec_location (&arg);
+ }
else
- ops = &tracepoint_breakpoint_ops;
+ {
+ ops = &tracepoint_breakpoint_ops;
+ location = string_to_event_location (&arg, current_language);
+ }
+ back_to = make_cleanup_delete_event_location (location);
create_breakpoint (get_current_arch (),
- arg,
- NULL, 0, NULL, 1 /* parse arg */,
+ location,
+ NULL, 0, arg, 1 /* parse arg */,
0 /* tempflag */,
bp_static_tracepoint /* type_wanted */,
0 /* Ignore count */,
from_tty,
1 /* enabled */,
0 /* internal */, 0);
+ do_cleanups (back_to);
}
/* Set up a fake reader function that gets command lines from a linked
{
char *addr_str, small_buf[100];
struct tracepoint *tp;
+ struct event_location *location;
+ struct cleanup *cleanup;
if (utp->at_string)
addr_str = utp->at_string;
"has no source form, ignoring it"),
utp->number);
+ location = string_to_event_location (&addr_str, current_language);
+ cleanup = make_cleanup_delete_event_location (location);
if (!create_breakpoint (get_current_arch (),
- addr_str,
- utp->cond_string, -1, NULL,
+ location,
+ utp->cond_string, -1, addr_str,
0 /* parse cond/thread */,
0 /* tempflag */,
utp->type /* type_wanted */,
utp->enabled /* enabled */,
0 /* internal */,
CREATE_BREAKPOINT_FLAGS_INSERTED))
- return NULL;
+ {
+ do_cleanups (cleanup);
+ return NULL;
+ }
+
+ do_cleanups (cleanup);
/* Get the tracepoint we just created. */
tp = get_tracepoint (tracepoint_count);
}
else if (*args == '\0')
{
- t1 = get_tracepoint_by_number (&args, NULL, 1);
+ t1 = get_tracepoint_by_number (&args, NULL);
if (t1)
trace_pass_set_count (t1, count, from_tty);
}
init_number_or_range (&state, args);
while (!state.finished)
{
- t1 = get_tracepoint_by_number (&args, &state, 1);
+ t1 = get_tracepoint_by_number (&args, &state);
if (t1)
trace_pass_set_count (t1, count, from_tty);
}
/* Utility: parse a tracepoint number and look it up in the list.
If STATE is not NULL, use, get_number_or_range_state and ignore ARG.
- If OPTIONAL_P is true, then if the argument is missing, the most
- recent tracepoint (tracepoint_count) is returned. */
+ If the argument is missing, the most recent tracepoint
+ (tracepoint_count) is returned. */
+
struct tracepoint *
get_tracepoint_by_number (char **arg,
- struct get_number_or_range_state *state,
- int optional_p)
+ struct get_number_or_range_state *state)
{
struct breakpoint *t;
int tpnum;
tpnum = get_number_or_range (state);
}
else if (arg == NULL || *arg == NULL || ! **arg)
- {
- if (optional_p)
- tpnum = tracepoint_count;
- else
- error_no_arg (_("tracepoint number"));
- }
+ tpnum = tracepoint_count;
else
tpnum = get_number (arg);
printf_filtered (_("bad tracepoint number at or near '%s'\n"),
instring);
else
- printf_filtered (_("Tracepoint argument missing "
- "and no previous tracepoint\n"));
+ printf_filtered (_("No previous tracepoint\n"));
return NULL;
}
if (tp->type != bp_dprintf && tp->commands)
{
- volatile struct gdb_exception ex;
+ struct gdb_exception exception;
fprintf_unfiltered (fp, " commands\n");
ui_out_redirect (current_uiout, fp);
- TRY_CATCH (ex, RETURN_MASK_ALL)
+ TRY
{
print_command_lines (current_uiout, tp->commands->commands, 2);
}
- ui_out_redirect (current_uiout, NULL);
-
- if (ex.reason < 0)
- throw_exception (ex);
+ CATCH (ex, RETURN_MASK_ALL)
+ {
+ ui_out_redirect (current_uiout, NULL);
+ throw_exception (ex);
+ }
+ END_CATCH
+ ui_out_redirect (current_uiout, NULL);
fprintf_unfiltered (fp, " end\n");
}
if (tp->enable_state == bp_disabled)
- fprintf_unfiltered (fp, "disable\n");
+ fprintf_unfiltered (fp, "disable $bpnum\n");
/* If this is a multi-location breakpoint, check if the locations
should be individually disabled. Watchpoint locations are
}
\f
+/* This help string is used to consolidate all the help string for specifying
+ locations used by several commands. */
+
+#define LOCATION_HELP_STRING \
+"Linespecs are colon-separated lists of location parameters, such as\n\
+source filename, function name, label name, and line number.\n\
+Example: To specify the start of a label named \"the_top\" in the\n\
+function \"fact\" in the file \"factorial.c\", use\n\
+\"factorial.c:fact:the_top\".\n\
+\n\
+Address locations begin with \"*\" and specify an exact address in the\n\
+program. Example: To specify the fourth byte past the start function\n\
+\"main\", use \"*main + 4\".\n\
+\n\
+Explicit locations are similar to linespecs but use an option/argument\n\
+syntax to specify location parameters.\n\
+Example: To specify the start of the label named \"the_top\" in the\n\
+function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\
+-function fact -label the_top\".\n"
+
/* This help string is used for the break, hbreak, tbreak and thbreak
commands. It is defined as a macro to prevent duplication.
COMMAND should be a string constant containing the name of the
command. */
+
#define BREAK_ARGS_HELP(command) \
command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\
PROBE_MODIFIER shall be present if the command is to be placed in a\n\
probe point. Accepted values are `-probe' (for a generic, automatically\n\
-guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\
-LOCATION may be a line number, function name, or \"*\" and an address.\n\
-If a line number is specified, break at start of code for that line.\n\
-If a function is specified, break at start of code for that function.\n\
-If an address is specified, break at that exact address.\n\
+guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\
+`-probe-dtrace' (for a DTrace probe).\n\
+LOCATION may be a linespec, address, or explicit location as described\n\
+below.\n\
+\n\
With no LOCATION, uses current execution address of the selected\n\
stack frame. This is useful for breaking on return to a stack frame.\n\
\n\
THREADNUM is the number from \"info threads\".\n\
CONDITION is a boolean expression.\n\
-\n\
+\n" LOCATION_HELP_STRING "\n\
Multiple breakpoints at one place are permitted, and useful if their\n\
conditions are different.\n\
\n\
void
add_catch_command (char *name, char *docstring,
- void (*sfunc) (char *args, int from_tty,
- struct cmd_list_element *command),
+ cmd_sfunc_ftype *sfunc,
completer_ftype *completer,
void *user_data_catch,
void *user_data_tcatch)
set_cmd_completer (command, completer);
}
-static void
-clear_syscall_counts (struct inferior *inf)
-{
- 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
save_command (char *arg, int from_tty)
{
printf_unfiltered (_("\"save\" must be followed by "
"the name of a save subcommand.\n"));
- help_list (save_cmdlist, "save ", -1, gdb_stdout);
+ help_list (save_cmdlist, "save ", all_commands, gdb_stdout);
}
struct breakpoint *
struct bp_location **locp, *loc;
ALL_BP_LOCATIONS (loc, locp)
- if (loc->symtab != NULL && loc->symtab->objfile == objfile)
+ if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile)
loc->symtab = NULL;
}
ops->insert_location = bkpt_insert_location;
ops->remove_location = bkpt_remove_location;
ops->breakpoint_hit = bkpt_breakpoint_hit;
- ops->create_sals_from_address = bkpt_create_sals_from_address;
+ ops->create_sals_from_location = bkpt_create_sals_from_location;
ops->create_breakpoints_sal = bkpt_create_breakpoints_sal;
- ops->decode_linespec = bkpt_decode_linespec;
+ ops->decode_location = bkpt_decode_location;
/* The breakpoint_ops structure to be used in regular breakpoints. */
ops = &bkpt_breakpoint_ops;
*ops = bkpt_breakpoint_ops;
ops->insert_location = bkpt_probe_insert_location;
ops->remove_location = bkpt_probe_remove_location;
- ops->create_sals_from_address = bkpt_probe_create_sals_from_address;
- ops->decode_linespec = bkpt_probe_decode_linespec;
+ ops->create_sals_from_location = bkpt_probe_create_sals_from_location;
+ ops->decode_location = bkpt_probe_decode_location;
/* Watchpoints. */
ops = &watchpoint_breakpoint_ops;
ops->print_one_detail = tracepoint_print_one_detail;
ops->print_mention = tracepoint_print_mention;
ops->print_recreate = tracepoint_print_recreate;
- ops->create_sals_from_address = tracepoint_create_sals_from_address;
+ ops->create_sals_from_location = tracepoint_create_sals_from_location;
ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal;
- ops->decode_linespec = tracepoint_decode_linespec;
+ ops->decode_location = tracepoint_decode_location;
/* Probe tracepoints. */
ops = &tracepoint_probe_breakpoint_ops;
*ops = tracepoint_breakpoint_ops;
- ops->create_sals_from_address = tracepoint_probe_create_sals_from_address;
- ops->decode_linespec = tracepoint_probe_decode_linespec;
+ ops->create_sals_from_location = tracepoint_probe_create_sals_from_location;
+ ops->decode_location = tracepoint_probe_decode_location;
/* Static tracepoints with marker (`-m'). */
ops = &strace_marker_breakpoint_ops;
*ops = tracepoint_breakpoint_ops;
- ops->create_sals_from_address = strace_marker_create_sals_from_address;
+ ops->create_sals_from_location = strace_marker_create_sals_from_location;
ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal;
- ops->decode_linespec = strace_marker_decode_linespec;
+ ops->decode_location = strace_marker_decode_location;
/* Fork catchpoints. */
ops = &catch_fork_breakpoint_ops;
ops->print_mention = print_mention_catch_exec;
ops->print_recreate = print_recreate_catch_exec;
- /* Syscall catchpoints. */
- ops = &catch_syscall_breakpoint_ops;
- *ops = base_breakpoint_ops;
- ops->dtor = dtor_catch_syscall;
- ops->insert_location = insert_catch_syscall;
- ops->remove_location = remove_catch_syscall;
- ops->breakpoint_hit = breakpoint_hit_catch_syscall;
- ops->print_it = print_it_catch_syscall;
- ops->print_one = print_one_catch_syscall;
- ops->print_mention = print_mention_catch_syscall;
- ops->print_recreate = print_recreate_catch_syscall;
-
/* Solib-related catchpoints. */
ops = &catch_solib_breakpoint_ops;
*ops = base_breakpoint_ops;
ops->print_mention = bkpt_print_mention;
ops->print_recreate = dprintf_print_recreate;
ops->after_condition_true = dprintf_after_condition_true;
+ ops->breakpoint_hit = dprintf_breakpoint_hit;
}
/* Chain containing all defined "enable breakpoint" subcommands. */
observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib);
observer_attach_free_objfile (disable_breakpoints_in_freed_objfile);
- observer_attach_inferior_exit (clear_syscall_counts);
observer_attach_memory_changed (invalidate_bp_value_on_memory_change);
breakpoint_objfile_key
= register_objfile_data_with_cleanup (NULL, free_breakpoint_probes);
- catch_syscall_inferior_data
- = register_inferior_data_with_cleanup (NULL,
- 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. */
add_com ("ignore", class_breakpoint, ignore_command, _("\
Set ignore-count of breakpoint number N to COUNT.\n\
Usage is `ignore N COUNT'."));
- if (xdb_commands)
- add_com_alias ("bc", "ignore", class_breakpoint, 1);
add_com ("commands", class_breakpoint, commands_command, _("\
Set commands to be executed when a breakpoint is hit.\n\
This is used to cancel the effect of the \"disable\" command.\n\
With a subcommand you can enable temporarily."),
&enablelist, "enable ", 1, &cmdlist);
- if (xdb_commands)
- add_com ("ab", class_breakpoint, enable_command, _("\
-Enable some breakpoints.\n\
-Give breakpoint numbers (separated by spaces) as arguments.\n\
-With no subcommand, breakpoints are enabled until you command otherwise.\n\
-This is used to cancel the effect of the \"disable\" command.\n\
-With a subcommand you can enable temporarily."));
add_com_alias ("en", "enable", class_breakpoint, 1);
&disablelist, "disable ", 1, &cmdlist);
add_com_alias ("dis", "disable", class_breakpoint, 1);
add_com_alias ("disa", "disable", class_breakpoint, 1);
- if (xdb_commands)
- add_com ("sb", class_breakpoint, disable_command, _("\
-Disable some breakpoints.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To disable all breakpoints, give no argument.\n\
-A disabled breakpoint is not forgotten, but has no effect until re-enabled."));
add_cmd ("breakpoints", class_alias, disable_command, _("\
Disable some breakpoints.\n\
&deletelist, "delete ", 1, &cmdlist);
add_com_alias ("d", "delete", class_breakpoint, 1);
add_com_alias ("del", "delete", class_breakpoint, 1);
- if (xdb_commands)
- add_com ("db", class_breakpoint, delete_command, _("\
-Delete some breakpoints.\n\
-Arguments are breakpoint numbers with spaces in between.\n\
-To delete all breakpoints, give no argument.\n"));
add_cmd ("breakpoints", class_alias, delete_command, _("\
Delete some breakpoints or auto-display expressions.\n\
&deletelist);
add_com ("clear", class_breakpoint, clear_command, _("\
-Clear breakpoint at specified line or function.\n\
-Argument may be line number, function name, or \"*\" and an address.\n\
-If line number is specified, all breakpoints in that line are cleared.\n\
-If function is specified, breakpoints at beginning of function are cleared.\n\
-If an address is specified, breakpoints at that address are cleared.\n\
+Clear breakpoint at specified location.\n\
+Argument may be a linespec, explicit, or address location as described below.\n\
\n\
With no argument, clears all breakpoints in the line that the selected frame\n\
-is executing in.\n\
-\n\
+is executing in.\n"
+"\n" LOCATION_HELP_STRING "\n\
See also the \"delete\" command which clears breakpoints by number."));
add_com_alias ("cl", "clear", class_breakpoint, 1);
c = add_com ("break", class_breakpoint, break_command, _("\
-Set breakpoint at specified line or function.\n"
+Set breakpoint at specified location.\n"
BREAK_ARGS_HELP ("break")));
set_cmd_completer (c, location_completer);
add_com_alias ("bre", "break", class_run, 1);
add_com_alias ("brea", "break", class_run, 1);
- if (xdb_commands)
- add_com_alias ("ba", "break", class_breakpoint, 1);
-
if (dbx_commands)
{
add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\
add_info_alias ("b", "breakpoints", 1);
- if (xdb_commands)
- add_com ("lb", class_breakpoint, breakpoints_info, _("\
-Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
-The \"Type\" column indicates one of:\n\
-\tbreakpoint - normal breakpoint\n\
-\twatchpoint - watchpoint\n\
-The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
-the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\
-breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\
-address and file/line number respectively.\n\
-\n\
-Convenience variable \"$_\" and default examine address for \"x\"\n\
-are set to the address of the last breakpoint listed unless the command\n\
-is prefixed with \"server \".\n\n\
-Convenience variable \"$bpnum\" contains the number of the last\n\
-breakpoint set."));
-
add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\
Status of all breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
NULL,
CATCH_PERMANENT,
CATCH_TEMPORARY);
- add_catch_command ("syscall", _("\
-Catch system calls by their names and/or numbers.\n\
-Arguments say which system calls to catch. If no arguments\n\
-are given, every system call will be caught.\n\
-Arguments, if given, should be one or more system call names\n\
-(if your system supports that), or system call numbers."),
- catch_syscall_command_1,
- catch_syscall_completer,
- CATCH_PERMANENT,
- CATCH_TEMPORARY);
c = add_com ("watch", class_breakpoint, watch_command, _("\
Set a watchpoint for an expression.\n\
/* Tracepoint manipulation commands. */
c = add_com ("trace", class_breakpoint, trace_command, _("\
-Set a tracepoint at specified line or function.\n\
+Set a tracepoint at specified location.\n\
\n"
BREAK_ARGS_HELP ("trace") "\n\
Do \"help tracepoints\" for info on other tracepoint commands."));
add_com_alias ("trac", "trace", class_alias, 1);
c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\
-Set a fast tracepoint at specified line or function.\n\
+Set a fast tracepoint at specified location.\n\
\n"
BREAK_ARGS_HELP ("ftrace") "\n\
Do \"help tracepoints\" for info on other tracepoint commands."));
set_cmd_completer (c, location_completer);
c = add_com ("strace", class_breakpoint, strace_command, _("\
-Set a static tracepoint at specified line, function or marker.\n\
+Set a static tracepoint at location or marker.\n\
\n\
strace [LOCATION] [if CONDITION]\n\
-LOCATION may be a line number, function name, \"*\" and an address,\n\
-or -m MARKER_ID.\n\
-If a line number is specified, probe the marker at start of code\n\
-for that line. If a function is specified, probe the marker at start\n\
-of code for that function. If an address is specified, probe the marker\n\
-at that exact address. If a marker id is specified, probe the marker\n\
-with that name. With no LOCATION, uses current execution address of\n\
-the selected stack frame.\n\
+LOCATION may be a linespec, explicit, or address location (described below) \n\
+or -m MARKER_ID.\n\n\
+If a marker id is specified, probe the marker with that name. With\n\
+no LOCATION, uses current execution address of the selected stack frame.\n\
Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\
This collects arbitrary user data passed in the probe point call to the\n\
tracing library. You can inspect it when analyzing the trace buffer,\n\
by printing the $_sdata variable like any other convenience variable.\n\
\n\
CONDITION is a boolean expression.\n\
-\n\
+\n" LOCATION_HELP_STRING "\n\
Multiple tracepoints at one place are permitted, and useful if their\n\
conditions are different.\n\
\n\
&breakpoint_set_cmdlist,
&breakpoint_show_cmdlist);
- add_setshow_auto_boolean_cmd ("always-inserted", class_support,
- &always_inserted_mode, _("\
+ add_setshow_boolean_cmd ("always-inserted", class_support,
+ &always_inserted_mode, _("\
Set mode for inserting breakpoints."), _("\
Show mode for inserting breakpoints."), _("\
-When this mode is off, breakpoints are inserted in inferior when it is\n\
-resumed, and removed when execution stops. When this mode is on,\n\
-breakpoints are inserted immediately and removed only when the user\n\
-deletes the breakpoint. When this mode is auto (which is the default),\n\
-the behaviour depends on the non-stop setting (see help set non-stop).\n\
-In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\
-behaves as if always-inserted mode is on; if gdb is controlling the\n\
-inferior in all-stop mode, gdb behaves as if always-inserted mode is off."),
+When this mode is on, breakpoints are inserted immediately as soon as\n\
+they're created, kept inserted even when execution stops, and removed\n\
+only when the user deletes them. When this mode is off (the default),\n\
+breakpoints are inserted only when execution continues, and removed\n\
+when execution stops."),
NULL,
&show_always_inserted_mode,
&breakpoint_set_cmdlist,
range (including START-LOCATION and END-LOCATION)."));
c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\
-Set a dynamic printf at specified line or function.\n\
+Set a dynamic printf at specified location.\n\
dprintf location,format string,arg1,arg2,...\n\
-location may be a line number, function name, or \"*\" and an address.\n\
-If a line number is specified, break at start of code for that line.\n\
-If a function is specified, break at start of code for that function."));
+location may be a linespec, explicit, or address location.\n"
+"\n" LOCATION_HELP_STRING));
set_cmd_completer (c, location_completer);
add_setshow_enum_cmd ("dprintf-style", class_support,