| /* Select target systems and architectures at runtime for GDB. |
| |
| Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
| 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. |
| |
| Contributed by Cygnus Support. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include <errno.h> |
| #include "gdb_string.h" |
| #include "target.h" |
| #include "gdbcmd.h" |
| #include "symtab.h" |
| #include "inferior.h" |
| #include "bfd.h" |
| #include "symfile.h" |
| #include "objfiles.h" |
| #include "gdb_wait.h" |
| #include "dcache.h" |
| #include <signal.h> |
| #include "regcache.h" |
| #include "gdb_assert.h" |
| #include "gdbcore.h" |
| |
| static void target_info (char *, int); |
| |
| static void maybe_kill_then_attach (char *, int); |
| |
| static void kill_or_be_killed (int); |
| |
| static void default_terminal_info (char *, int); |
| |
| static int default_region_size_ok_for_hw_watchpoint (int); |
| |
| static int nosymbol (char *, CORE_ADDR *); |
| |
| static void tcomplain (void); |
| |
| static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
| |
| static int return_zero (void); |
| |
| static int return_one (void); |
| |
| static int return_minus_one (void); |
| |
| void target_ignore (void); |
| |
| static void target_command (char *, int); |
| |
| static struct target_ops *find_default_run_target (char *); |
| |
| static void nosupport_runtime (void); |
| |
| static LONGEST default_xfer_partial (struct target_ops *ops, |
| enum target_object object, |
| const char *annex, gdb_byte *readbuf, |
| const gdb_byte *writebuf, |
| ULONGEST offset, LONGEST len); |
| |
| /* Transfer LEN bytes between target address MEMADDR and GDB address |
| MYADDR. Returns 0 for success, errno code for failure (which |
| includes partial transfers -- if you want a more useful response to |
| partial transfers, try either target_read_memory_partial or |
| target_write_memory_partial). */ |
| |
| static int target_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, |
| int write); |
| |
| static void init_dummy_target (void); |
| |
| static struct target_ops debug_target; |
| |
| static void debug_to_open (char *, int); |
| |
| static void debug_to_close (int); |
| |
| static void debug_to_attach (char *, int); |
| |
| static void debug_to_detach (char *, int); |
| |
| static void debug_to_disconnect (char *, int); |
| |
| static void debug_to_resume (ptid_t, int, enum target_signal); |
| |
| static ptid_t debug_to_wait (ptid_t, struct target_waitstatus *); |
| |
| static void debug_to_fetch_registers (int); |
| |
| static void debug_to_store_registers (int); |
| |
| static void debug_to_prepare_to_store (void); |
| |
| static void debug_to_files_info (struct target_ops *); |
| |
| static int debug_to_insert_breakpoint (CORE_ADDR, gdb_byte *); |
| |
| static int debug_to_remove_breakpoint (CORE_ADDR, gdb_byte *); |
| |
| static int debug_to_can_use_hw_breakpoint (int, int, int); |
| |
| static int debug_to_insert_hw_breakpoint (CORE_ADDR, gdb_byte *); |
| |
| static int debug_to_remove_hw_breakpoint (CORE_ADDR, gdb_byte *); |
| |
| static int debug_to_insert_watchpoint (CORE_ADDR, int, int); |
| |
| static int debug_to_remove_watchpoint (CORE_ADDR, int, int); |
| |
| static int debug_to_stopped_by_watchpoint (void); |
| |
| static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
| |
| static int debug_to_region_size_ok_for_hw_watchpoint (int); |
| |
| static void debug_to_terminal_init (void); |
| |
| static void debug_to_terminal_inferior (void); |
| |
| static void debug_to_terminal_ours_for_output (void); |
| |
| static void debug_to_terminal_save_ours (void); |
| |
| static void debug_to_terminal_ours (void); |
| |
| static void debug_to_terminal_info (char *, int); |
| |
| static void debug_to_kill (void); |
| |
| static void debug_to_load (char *, int); |
| |
| static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
| |
| static void debug_to_mourn_inferior (void); |
| |
| static int debug_to_can_run (void); |
| |
| static void debug_to_notice_signals (ptid_t); |
| |
| static int debug_to_thread_alive (ptid_t); |
| |
| static void debug_to_stop (void); |
| |
| /* NOTE: cagney/2004-09-29: Many targets reference this variable in |
| wierd and mysterious ways. Putting the variable here lets those |
| wierd and mysterious ways keep building while they are being |
| converted to the inferior inheritance structure. */ |
| struct target_ops deprecated_child_ops; |
| |
| /* Pointer to array of target architecture structures; the size of the |
| array; the current index into the array; the allocated size of the |
| array. */ |
| struct target_ops **target_structs; |
| unsigned target_struct_size; |
| unsigned target_struct_index; |
| unsigned target_struct_allocsize; |
| #define DEFAULT_ALLOCSIZE 10 |
| |
| /* The initial current target, so that there is always a semi-valid |
| current target. */ |
| |
| static struct target_ops dummy_target; |
| |
| /* Top of target stack. */ |
| |
| static struct target_ops *target_stack; |
| |
| /* The target structure we are currently using to talk to a process |
| or file or whatever "inferior" we have. */ |
| |
| struct target_ops current_target; |
| |
| /* Command list for target. */ |
| |
| static struct cmd_list_element *targetlist = NULL; |
| |
| /* Nonzero if we are debugging an attached outside process |
| rather than an inferior. */ |
| |
| int attach_flag; |
| |
| /* Non-zero if we want to see trace of target level stuff. */ |
| |
| static int targetdebug = 0; |
| static void |
| show_targetdebug (struct ui_file *file, int from_tty, |
| struct cmd_list_element *c, const char *value) |
| { |
| fprintf_filtered (file, _("Target debugging is %s.\n"), value); |
| } |
| |
| static void setup_target_debug (void); |
| |
| DCACHE *target_dcache; |
| |
| /* The user just typed 'target' without the name of a target. */ |
| |
| static void |
| target_command (char *arg, int from_tty) |
| { |
| fputs_filtered ("Argument required (target name). Try `help target'\n", |
| gdb_stdout); |
| } |
| |
| /* Add a possible target architecture to the list. */ |
| |
| void |
| add_target (struct target_ops *t) |
| { |
| /* Provide default values for all "must have" methods. */ |
| if (t->to_xfer_partial == NULL) |
| t->to_xfer_partial = default_xfer_partial; |
| |
| if (!target_structs) |
| { |
| target_struct_allocsize = DEFAULT_ALLOCSIZE; |
| target_structs = (struct target_ops **) xmalloc |
| (target_struct_allocsize * sizeof (*target_structs)); |
| } |
| if (target_struct_size >= target_struct_allocsize) |
| { |
| target_struct_allocsize *= 2; |
| target_structs = (struct target_ops **) |
| xrealloc ((char *) target_structs, |
| target_struct_allocsize * sizeof (*target_structs)); |
| } |
| target_structs[target_struct_size++] = t; |
| |
| if (targetlist == NULL) |
| add_prefix_cmd ("target", class_run, target_command, _("\ |
| Connect to a target machine or process.\n\ |
| The first argument is the type or protocol of the target machine.\n\ |
| Remaining arguments are interpreted by the target protocol. For more\n\ |
| information on the arguments for a particular protocol, type\n\ |
| `help target ' followed by the protocol name."), |
| &targetlist, "target ", 0, &cmdlist); |
| add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); |
| } |
| |
| /* Stub functions */ |
| |
| void |
| target_ignore (void) |
| { |
| } |
| |
| void |
| target_load (char *arg, int from_tty) |
| { |
| dcache_invalidate (target_dcache); |
| (*current_target.to_load) (arg, from_tty); |
| } |
| |
| static int |
| nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
| struct target_ops *t) |
| { |
| errno = EIO; /* Can't read/write this location */ |
| return 0; /* No bytes handled */ |
| } |
| |
| static void |
| tcomplain (void) |
| { |
| error (_("You can't do that when your target is `%s'"), |
| current_target.to_shortname); |
| } |
| |
| void |
| noprocess (void) |
| { |
| error (_("You can't do that without a process to debug.")); |
| } |
| |
| static int |
| nosymbol (char *name, CORE_ADDR *addrp) |
| { |
| return 1; /* Symbol does not exist in target env */ |
| } |
| |
| static void |
| nosupport_runtime (void) |
| { |
| if (ptid_equal (inferior_ptid, null_ptid)) |
| noprocess (); |
| else |
| error (_("No run-time support for this")); |
| } |
| |
| |
| static void |
| default_terminal_info (char *args, int from_tty) |
| { |
| printf_unfiltered (_("No saved terminal information.\n")); |
| } |
| |
| /* This is the default target_create_inferior and target_attach function. |
| If the current target is executing, it asks whether to kill it off. |
| If this function returns without calling error(), it has killed off |
| the target, and the operation should be attempted. */ |
| |
| static void |
| kill_or_be_killed (int from_tty) |
| { |
| if (target_has_execution) |
| { |
| printf_unfiltered (_("You are already running a program:\n")); |
| target_files_info (); |
| if (query ("Kill it? ")) |
| { |
| target_kill (); |
| if (target_has_execution) |
| error (_("Killing the program did not help.")); |
| return; |
| } |
| else |
| { |
| error (_("Program not killed.")); |
| } |
| } |
| tcomplain (); |
| } |
| |
| static void |
| maybe_kill_then_attach (char *args, int from_tty) |
| { |
| kill_or_be_killed (from_tty); |
| target_attach (args, from_tty); |
| } |
| |
| static void |
| maybe_kill_then_create_inferior (char *exec, char *args, char **env, |
| int from_tty) |
| { |
| kill_or_be_killed (0); |
| target_create_inferior (exec, args, env, from_tty); |
| } |
| |
| /* Go through the target stack from top to bottom, copying over zero |
| entries in current_target, then filling in still empty entries. In |
| effect, we are doing class inheritance through the pushed target |
| vectors. |
| |
| NOTE: cagney/2003-10-17: The problem with this inheritance, as it |
| is currently implemented, is that it discards any knowledge of |
| which target an inherited method originally belonged to. |
| Consequently, new new target methods should instead explicitly and |
| locally search the target stack for the target that can handle the |
| request. */ |
| |
| static void |
| update_current_target (void) |
| { |
| struct target_ops *t; |
| |
| /* First, reset curren'ts contents. */ |
| memset (¤t_target, 0, sizeof (current_target)); |
| |
| #define INHERIT(FIELD, TARGET) \ |
| if (!current_target.FIELD) \ |
| current_target.FIELD = (TARGET)->FIELD |
| |
| for (t = target_stack; t; t = t->beneath) |
| { |
| INHERIT (to_shortname, t); |
| INHERIT (to_longname, t); |
| INHERIT (to_doc, t); |
| INHERIT (to_open, t); |
| INHERIT (to_close, t); |
| INHERIT (to_attach, t); |
| INHERIT (to_post_attach, t); |
| INHERIT (to_detach, t); |
| INHERIT (to_disconnect, t); |
| INHERIT (to_resume, t); |
| INHERIT (to_wait, t); |
| INHERIT (to_fetch_registers, t); |
| INHERIT (to_store_registers, t); |
| INHERIT (to_prepare_to_store, t); |
| INHERIT (deprecated_xfer_memory, t); |
| INHERIT (to_files_info, t); |
| INHERIT (to_insert_breakpoint, t); |
| INHERIT (to_remove_breakpoint, t); |
| INHERIT (to_can_use_hw_breakpoint, t); |
| INHERIT (to_insert_hw_breakpoint, t); |
| INHERIT (to_remove_hw_breakpoint, t); |
| INHERIT (to_insert_watchpoint, t); |
| INHERIT (to_remove_watchpoint, t); |
| INHERIT (to_stopped_data_address, t); |
| INHERIT (to_stopped_by_watchpoint, t); |
| INHERIT (to_have_continuable_watchpoint, t); |
| INHERIT (to_region_size_ok_for_hw_watchpoint, t); |
| INHERIT (to_terminal_init, t); |
| INHERIT (to_terminal_inferior, t); |
| INHERIT (to_terminal_ours_for_output, t); |
| INHERIT (to_terminal_ours, t); |
| INHERIT (to_terminal_save_ours, t); |
| INHERIT (to_terminal_info, t); |
| INHERIT (to_kill, t); |
| INHERIT (to_load, t); |
| INHERIT (to_lookup_symbol, t); |
| INHERIT (to_create_inferior, t); |
| INHERIT (to_post_startup_inferior, t); |
| INHERIT (to_acknowledge_created_inferior, t); |
| INHERIT (to_insert_fork_catchpoint, t); |
| INHERIT (to_remove_fork_catchpoint, t); |
| INHERIT (to_insert_vfork_catchpoint, t); |
| INHERIT (to_remove_vfork_catchpoint, t); |
| INHERIT (to_follow_fork, t); |
| INHERIT (to_insert_exec_catchpoint, t); |
| INHERIT (to_remove_exec_catchpoint, t); |
| INHERIT (to_reported_exec_events_per_exec_call, t); |
| INHERIT (to_has_exited, t); |
| INHERIT (to_mourn_inferior, t); |
| INHERIT (to_can_run, t); |
| INHERIT (to_notice_signals, t); |
| INHERIT (to_thread_alive, t); |
| INHERIT (to_find_new_threads, t); |
| INHERIT (to_pid_to_str, t); |
| INHERIT (to_extra_thread_info, t); |
| INHERIT (to_stop, t); |
| /* Do not inherit to_xfer_partial. */ |
| INHERIT (to_rcmd, t); |
| INHERIT (to_enable_exception_callback, t); |
| INHERIT (to_get_current_exception_event, t); |
| INHERIT (to_pid_to_exec_file, t); |
| INHERIT (to_stratum, t); |
| INHERIT (to_has_all_memory, t); |
| INHERIT (to_has_memory, t); |
| INHERIT (to_has_stack, t); |
| INHERIT (to_has_registers, t); |
| INHERIT (to_has_execution, t); |
| INHERIT (to_has_thread_control, t); |
| INHERIT (to_sections, t); |
| INHERIT (to_sections_end, t); |
| INHERIT (to_can_async_p, t); |
| INHERIT (to_is_async_p, t); |
| INHERIT (to_async, t); |
| INHERIT (to_async_mask_value, t); |
| INHERIT (to_find_memory_regions, t); |
| INHERIT (to_make_corefile_notes, t); |
| INHERIT (to_get_thread_local_address, t); |
| INHERIT (to_magic, t); |
| } |
| #undef INHERIT |
| |
| /* Clean up a target struct so it no longer has any zero pointers in |
| it. Some entries are defaulted to a method that print an error, |
| others are hard-wired to a standard recursive default. */ |
| |
| #define de_fault(field, value) \ |
| if (!current_target.field) \ |
| current_target.field = value |
| |
| de_fault (to_open, |
| (void (*) (char *, int)) |
| tcomplain); |
| de_fault (to_close, |
| (void (*) (int)) |
| target_ignore); |
| de_fault (to_attach, |
| maybe_kill_then_attach); |
| de_fault (to_post_attach, |
| (void (*) (int)) |
| target_ignore); |
| de_fault (to_detach, |
| (void (*) (char *, int)) |
| target_ignore); |
| de_fault (to_disconnect, |
| (void (*) (char *, int)) |
| tcomplain); |
| de_fault (to_resume, |
| (void (*) (ptid_t, int, enum target_signal)) |
| noprocess); |
| de_fault (to_wait, |
| (ptid_t (*) (ptid_t, struct target_waitstatus *)) |
| noprocess); |
| de_fault (to_fetch_registers, |
| (void (*) (int)) |
| target_ignore); |
| de_fault (to_store_registers, |
| (void (*) (int)) |
| noprocess); |
| de_fault (to_prepare_to_store, |
| (void (*) (void)) |
| noprocess); |
| de_fault (deprecated_xfer_memory, |
| (int (*) (CORE_ADDR, gdb_byte *, int, int, struct mem_attrib *, struct target_ops *)) |
| nomemory); |
| de_fault (to_files_info, |
| (void (*) (struct target_ops *)) |
| target_ignore); |
| de_fault (to_insert_breakpoint, |
| memory_insert_breakpoint); |
| de_fault (to_remove_breakpoint, |
| memory_remove_breakpoint); |
| de_fault (to_can_use_hw_breakpoint, |
| (int (*) (int, int, int)) |
| return_zero); |
| de_fault (to_insert_hw_breakpoint, |
| (int (*) (CORE_ADDR, gdb_byte *)) |
| return_minus_one); |
| de_fault (to_remove_hw_breakpoint, |
| (int (*) (CORE_ADDR, gdb_byte *)) |
| return_minus_one); |
| de_fault (to_insert_watchpoint, |
| (int (*) (CORE_ADDR, int, int)) |
| return_minus_one); |
| de_fault (to_remove_watchpoint, |
| (int (*) (CORE_ADDR, int, int)) |
| return_minus_one); |
| de_fault (to_stopped_by_watchpoint, |
| (int (*) (void)) |
| return_zero); |
| de_fault (to_stopped_data_address, |
| (int (*) (struct target_ops *, CORE_ADDR *)) |
| return_zero); |
| de_fault (to_region_size_ok_for_hw_watchpoint, |
| default_region_size_ok_for_hw_watchpoint); |
| de_fault (to_terminal_init, |
| (void (*) (void)) |
| target_ignore); |
| de_fault (to_terminal_inferior, |
| (void (*) (void)) |
| target_ignore); |
| de_fault (to_terminal_ours_for_output, |
| (void (*) (void)) |
| target_ignore); |
| de_fault (to_terminal_ours, |
| (void (*) (void)) |
| target_ignore); |
| de_fault (to_terminal_save_ours, |
| (void (*) (void)) |
| target_ignore); |
| de_fault (to_terminal_info, |
| default_terminal_info); |
| de_fault (to_kill, |
| (void (*) (void)) |
| noprocess); |
| de_fault (to_load, |
| (void (*) (char *, int)) |
| tcomplain); |
| de_fault (to_lookup_symbol, |
| (int (*) (char *, CORE_ADDR *)) |
| nosymbol); |
| de_fault (to_create_inferior, |
| maybe_kill_then_create_inferior); |
| de_fault (to_post_startup_inferior, |
| (void (*) (ptid_t)) |
| target_ignore); |
| de_fault (to_acknowledge_created_inferior, |
| (void (*) (int)) |
| target_ignore); |
| de_fault (to_insert_fork_catchpoint, |
| (void (*) (int)) |
| tcomplain); |
| de_fault (to_remove_fork_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_insert_vfork_catchpoint, |
| (void (*) (int)) |
| tcomplain); |
| de_fault (to_remove_vfork_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_follow_fork, |
| (int (*) (int)) |
| target_ignore); |
| de_fault (to_insert_exec_catchpoint, |
| (void (*) (int)) |
| tcomplain); |
| de_fault (to_remove_exec_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_reported_exec_events_per_exec_call, |
| (int (*) (void)) |
| return_one); |
| de_fault (to_has_exited, |
| (int (*) (int, int, int *)) |
| return_zero); |
| de_fault (to_mourn_inferior, |
| (void (*) (void)) |
| noprocess); |
| de_fault (to_can_run, |
| return_zero); |
| de_fault (to_notice_signals, |
| (void (*) (ptid_t)) |
| target_ignore); |
| de_fault (to_thread_alive, |
| (int (*) (ptid_t)) |
| return_zero); |
| de_fault (to_find_new_threads, |
| (void (*) (void)) |
| target_ignore); |
| de_fault (to_extra_thread_info, |
| (char *(*) (struct thread_info *)) |
| return_zero); |
| de_fault (to_stop, |
| (void (*) (void)) |
| target_ignore); |
| current_target.to_xfer_partial = default_xfer_partial; |
| de_fault (to_rcmd, |
| (void (*) (char *, struct ui_file *)) |
| tcomplain); |
| de_fault (to_enable_exception_callback, |
| (struct symtab_and_line * (*) (enum exception_event_kind, int)) |
| nosupport_runtime); |
| de_fault (to_get_current_exception_event, |
| (struct exception_event_record * (*) (void)) |
| nosupport_runtime); |
| de_fault (to_pid_to_exec_file, |
| (char *(*) (int)) |
| return_zero); |
| de_fault (to_can_async_p, |
| (int (*) (void)) |
| return_zero); |
| de_fault (to_is_async_p, |
| (int (*) (void)) |
| return_zero); |
| de_fault (to_async, |
| (void (*) (void (*) (enum inferior_event_type, void*), void*)) |
| tcomplain); |
| #undef de_fault |
| |
| /* Finally, position the target-stack beneath the squashed |
| "current_target". That way code looking for a non-inherited |
| target method can quickly and simply find it. */ |
| current_target.beneath = target_stack; |
| } |
| |
| /* Push a new target type into the stack of the existing target accessors, |
| possibly superseding some of the existing accessors. |
| |
| Result is zero if the pushed target ended up on top of the stack, |
| nonzero if at least one target is on top of it. |
| |
| Rather than allow an empty stack, we always have the dummy target at |
| the bottom stratum, so we can call the function vectors without |
| checking them. */ |
| |
| int |
| push_target (struct target_ops *t) |
| { |
| struct target_ops **cur; |
| |
| /* Check magic number. If wrong, it probably means someone changed |
| the struct definition, but not all the places that initialize one. */ |
| if (t->to_magic != OPS_MAGIC) |
| { |
| fprintf_unfiltered (gdb_stderr, |
| "Magic number of %s target struct wrong\n", |
| t->to_shortname); |
| internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
| } |
| |
| /* Find the proper stratum to install this target in. */ |
| for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
| { |
| if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
| break; |
| } |
| |
| /* If there's already targets at this stratum, remove them. */ |
| /* FIXME: cagney/2003-10-15: I think this should be poping all |
| targets to CUR, and not just those at this stratum level. */ |
| while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) |
| { |
| /* There's already something at this stratum level. Close it, |
| and un-hook it from the stack. */ |
| struct target_ops *tmp = (*cur); |
| (*cur) = (*cur)->beneath; |
| tmp->beneath = NULL; |
| target_close (tmp, 0); |
| } |
| |
| /* We have removed all targets in our stratum, now add the new one. */ |
| t->beneath = (*cur); |
| (*cur) = t; |
| |
| update_current_target (); |
| |
| if (targetdebug) |
| setup_target_debug (); |
| |
| /* Not on top? */ |
| return (t != target_stack); |
| } |
| |
| /* Remove a target_ops vector from the stack, wherever it may be. |
| Return how many times it was removed (0 or 1). */ |
| |
| int |
| unpush_target (struct target_ops *t) |
| { |
| struct target_ops **cur; |
| struct target_ops *tmp; |
| |
| /* Look for the specified target. Note that we assume that a target |
| can only occur once in the target stack. */ |
| |
| for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
| { |
| if ((*cur) == t) |
| break; |
| } |
| |
| if ((*cur) == NULL) |
| return 0; /* Didn't find target_ops, quit now */ |
| |
| /* NOTE: cagney/2003-12-06: In '94 the close call was made |
| unconditional by moving it to before the above check that the |
| target was in the target stack (something about "Change the way |
| pushing and popping of targets work to support target overlays |
| and inheritance"). This doesn't make much sense - only open |
| targets should be closed. */ |
| target_close (t, 0); |
| |
| /* Unchain the target */ |
| tmp = (*cur); |
| (*cur) = (*cur)->beneath; |
| tmp->beneath = NULL; |
| |
| update_current_target (); |
| |
| return 1; |
| } |
| |
| void |
| pop_target (void) |
| { |
| target_close (¤t_target, 0); /* Let it clean up */ |
| if (unpush_target (target_stack) == 1) |
| return; |
| |
| fprintf_unfiltered (gdb_stderr, |
| "pop_target couldn't find target %s\n", |
| current_target.to_shortname); |
| internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
| } |
| |
| #undef MIN |
| #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) |
| |
| /* target_read_string -- read a null terminated string, up to LEN bytes, |
| from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. |
| Set *STRING to a pointer to malloc'd memory containing the data; the caller |
| is responsible for freeing it. Return the number of bytes successfully |
| read. */ |
| |
| int |
| target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
| { |
| int tlen, origlen, offset, i; |
| gdb_byte buf[4]; |
| int errcode = 0; |
| char *buffer; |
| int buffer_allocated; |
| char *bufptr; |
| unsigned int nbytes_read = 0; |
| |
| /* Small for testing. */ |
| buffer_allocated = 4; |
| buffer = xmalloc (buffer_allocated); |
| bufptr = buffer; |
| |
| origlen = len; |
| |
| while (len > 0) |
| { |
| tlen = MIN (len, 4 - (memaddr & 3)); |
| offset = memaddr & 3; |
| |
| errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
| if (errcode != 0) |
| { |
| /* The transfer request might have crossed the boundary to an |
| unallocated region of memory. Retry the transfer, requesting |
| a single byte. */ |
| tlen = 1; |
| offset = 0; |
| errcode = target_read_memory (memaddr, buf, 1); |
| if (errcode != 0) |
| goto done; |
| } |
| |
| if (bufptr - buffer + tlen > buffer_allocated) |
| { |
| unsigned int bytes; |
| bytes = bufptr - buffer; |
| buffer_allocated *= 2; |
| buffer = xrealloc (buffer, buffer_allocated); |
| bufptr = buffer + bytes; |
| } |
| |
| for (i = 0; i < tlen; i++) |
| { |
| *bufptr++ = buf[i + offset]; |
| if (buf[i + offset] == '\000') |
| { |
| nbytes_read += i + 1; |
| goto done; |
| } |
| } |
| |
| memaddr += tlen; |
| len -= tlen; |
| nbytes_read += tlen; |
| } |
| done: |
| if (errnop != NULL) |
| *errnop = errcode; |
| if (string != NULL) |
| *string = buffer; |
| return nbytes_read; |
| } |
| |
| /* Find a section containing ADDR. */ |
| struct section_table * |
| target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
| { |
| struct section_table *secp; |
| for (secp = target->to_sections; |
| secp < target->to_sections_end; |
| secp++) |
| { |
| if (addr >= secp->addr && addr < secp->endaddr) |
| return secp; |
| } |
| return NULL; |
| } |
| |
| static int trust_readonly = 0; |
| static void |
| show_trust_readonly (struct ui_file *file, int from_tty, |
| struct cmd_list_element *c, const char *value) |
| { |
| fprintf_filtered (file, |
| _("Mode for reading from readonly sections is %s.\n"), |
| value); |
| } |
| |
| /* If trust-readonly-sections, and if MEMADDR is within a |
| read-only section, read LEN bytes from the bfd at MEMADDR, |
| placing the results in GDB's memory at MYADDR. Returns |
| the number of bytes read. */ |
| |
| static int |
| target_read_memory_trusted (CORE_ADDR memaddr, char *myaddr, int len) |
| { |
| struct section_table *secp; |
| /* User-settable option, 'trust-readonly-sections'. If true, |
| then memory from any SEC_READONLY bfd section may be read |
| directly from the bfd file. */ |
| if (trust_readonly) |
| { |
| secp = target_section_by_addr (¤t_target, memaddr); |
| if (secp != NULL |
| && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) |
| & SEC_READONLY)) |
| return xfer_memory (memaddr, myaddr, len, 0, NULL, ¤t_target); |
| } |
| |
| return 0; |
| } |
| |
| /* Return non-zero when the target vector has supplied an xfer_partial |
| method and it, rather than xfer_memory, should be used. */ |
| static int |
| target_xfer_partial_p (void) |
| { |
| return (target_stack != NULL |
| && target_stack->to_xfer_partial != default_xfer_partial); |
| } |
| |
| static LONGEST |
| target_xfer_partial (struct target_ops *ops, |
| enum target_object object, const char *annex, |
| void *readbuf, const void *writebuf, |
| ULONGEST offset, LONGEST len) |
| { |
| LONGEST retval; |
| |
| gdb_assert (ops->to_xfer_partial != NULL); |
| retval = ops->to_xfer_partial (ops, object, annex, readbuf, writebuf, |
| offset, len); |
| if (targetdebug) |
| { |
| const unsigned char *myaddr = NULL; |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "%s:target_xfer_partial (%d, %s, 0x%lx, 0x%lx, 0x%s, %s) = %s", |
| ops->to_shortname, |
| (int) object, |
| (annex ? annex : "(null)"), |
| (long) readbuf, (long) writebuf, |
| paddr_nz (offset), paddr_d (len), paddr_d (retval)); |
| |
| if (readbuf) |
| myaddr = readbuf; |
| if (writebuf) |
| myaddr = writebuf; |
| if (retval > 0 && myaddr != NULL) |
| { |
| int i; |
| |
| fputs_unfiltered (", bytes =", gdb_stdlog); |
| for (i = 0; i < retval; i++) |
| { |
| if ((((long) &(myaddr[i])) & 0xf) == 0) |
| { |
| if (targetdebug < 2 && i > 0) |
| { |
| fprintf_unfiltered (gdb_stdlog, " ..."); |
| break; |
| } |
| fprintf_unfiltered (gdb_stdlog, "\n"); |
| } |
| |
| fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
| } |
| } |
| |
| fputc_unfiltered ('\n', gdb_stdlog); |
| } |
| return retval; |
| } |
| |
| /* Attempt a transfer all LEN bytes starting at OFFSET between the |
| inferior's KIND:ANNEX space and GDB's READBUF/WRITEBUF buffer. If |
| the transfer succeeds, return zero, otherwize the host ERRNO is |
| returned. |
| |
| The inferior is formed from several layers. In the case of |
| corefiles, inf-corefile is layered above inf-exec and a request for |
| text (corefiles do not include text pages) will be first sent to |
| the core-stratum, fail, and then sent to the object-file where it |
| will succeed. |
| |
| NOTE: cagney/2004-09-30: |
| |
| The old code tried to use four separate mechanisms for mapping an |
| object:offset:len tuple onto an inferior and its address space: the |
| target stack; the inferior's TO_SECTIONS; solib's SO_LIST; |
| overlays. |
| |
| This is stupid. |
| |
| The code below is instead using a single mechanism (currently |
| strata). If that mechanism proves insufficient then re-factor it |
| implementing another singluar mechanism (for instance, a generic |
| object:annex onto inferior:object:annex say). */ |
| |
| static LONGEST |
| xfer_using_stratum (enum target_object object, const char *annex, |
| ULONGEST offset, LONGEST len, void *readbuf, |
| const void *writebuf) |
| { |
| LONGEST xfered; |
| struct target_ops *target; |
| |
| /* Always successful. */ |
| if (len == 0) |
| return 0; |
| /* Never successful. */ |
| if (target_stack == NULL) |
| return EIO; |
| |
| target = target_stack; |
| while (1) |
| { |
| xfered = target_xfer_partial (target, object, annex, |
| readbuf, writebuf, offset, len); |
| if (xfered > 0) |
| { |
| /* The partial xfer succeeded, update the counts, check that |
| the xfer hasn't finished and if it hasn't set things up |
| for the next round. */ |
| len -= xfered; |
| if (len <= 0) |
| return 0; |
| offset += xfered; |
| if (readbuf != NULL) |
| readbuf = (gdb_byte *) readbuf + xfered; |
| if (writebuf != NULL) |
| writebuf = (gdb_byte *) writebuf + xfered; |
| target = target_stack; |
| } |
| else if (xfered < 0) |
| { |
| /* Something totally screwed up, abandon the attempt to |
| xfer. */ |
| if (errno) |
| return errno; |
| else |
| return EIO; |
| } |
| else |
| { |
| /* This "stratum" didn't work, try the next one down. */ |
| target = target->beneath; |
| if (target == NULL) |
| return EIO; |
| } |
| } |
| } |
| |
| /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
| GDB's memory at MYADDR. Returns either 0 for success or an errno value |
| if any error occurs. |
| |
| If an error occurs, no guarantee is made about the contents of the data at |
| MYADDR. In particular, the caller should not depend upon partial reads |
| filling the buffer with good data. There is no way for the caller to know |
| how much good data might have been transfered anyway. Callers that can |
| deal with partial reads should call target_read_memory_partial. */ |
| |
| int |
| target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
| { |
| int ret; |
| |
| /* Honor 'trust-readonly-sections' if set. */ |
| if ((ret = target_read_memory_trusted (memaddr, myaddr, len)) > 0) |
| return (ret != len); |
| |
| if (target_xfer_partial_p ()) |
| return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL, |
| memaddr, len, myaddr, NULL); |
| else |
| return target_xfer_memory (memaddr, myaddr, len, 0); |
| } |
| |
| int |
| target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
| { |
| gdb_byte *bytes = alloca (len); |
| memcpy (bytes, myaddr, len); |
| if (target_xfer_partial_p ()) |
| return xfer_using_stratum (TARGET_OBJECT_MEMORY, NULL, |
| memaddr, len, NULL, bytes); |
| else |
| return target_xfer_memory (memaddr, bytes, len, 1); |
| } |
| |
| #ifndef target_stopped_data_address_p |
| int |
| target_stopped_data_address_p (struct target_ops *target) |
| { |
| if (target->to_stopped_data_address |
| == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero) |
| return 0; |
| if (target->to_stopped_data_address == debug_to_stopped_data_address |
| && (debug_target.to_stopped_data_address |
| == (int (*) (struct target_ops *, CORE_ADDR *)) return_zero)) |
| return 0; |
| return 1; |
| } |
| #endif |
| |
| /* Move memory to or from the targets. The top target gets priority; |
| if it cannot handle it, it is offered to the next one down, etc. |
| |
| Result is -1 on error, or the number of bytes transfered. */ |
| |
| int |
| do_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
| struct mem_attrib *attrib) |
| { |
| int res; |
| int done = 0; |
| struct target_ops *t; |
| |
| /* Zero length requests are ok and require no work. */ |
| if (len == 0) |
| return 0; |
| |
| /* Honor 'trust-readonly-sections' if set. */ |
| if (!write && |
| (res = target_read_memory_trusted (memaddr, myaddr, len)) > 0) |
| return res; |
| |
| /* deprecated_xfer_memory is not guaranteed to set errno, even when |
| it returns 0. */ |
| errno = 0; |
| |
| /* The quick case is that the top target can handle the transfer. */ |
| res = current_target.deprecated_xfer_memory |
| (memaddr, myaddr, len, write, attrib, ¤t_target); |
| |
| /* If res <= 0 then we call it again in the loop. Ah well. */ |
| if (res <= 0) |
| { |
| for (t = target_stack; t != NULL; t = t->beneath) |
| { |
| if (!t->to_has_memory) |
| continue; |
| |
| res = t->deprecated_xfer_memory (memaddr, myaddr, len, write, attrib, t); |
| if (res > 0) |
| break; /* Handled all or part of xfer */ |
| if (t->to_has_all_memory) |
| break; |
| } |
| |
| if (res <= 0) |
| return -1; |
| } |
| |
| return res; |
| } |
| |
| |
| /* Perform a memory transfer. Iterate until the entire region has |
| been transfered. |
| |
| Result is 0 or errno value. */ |
| |
| static int |
| target_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write) |
| { |
| int res; |
| int reg_len; |
| struct mem_region *region; |
| |
| /* Zero length requests are ok and require no work. */ |
| if (len == 0) |
| { |
| return 0; |
| } |
| |
| while (len > 0) |
| { |
| region = lookup_mem_region(memaddr); |
| if (memaddr + len < region->hi) |
| reg_len = len; |
| else |
| reg_len = region->hi - memaddr; |
| |
| switch (region->attrib.mode) |
| { |
| case MEM_RO: |
| if (write) |
| return EIO; |
| break; |
| |
| case MEM_WO: |
| if (!write) |
| return EIO; |
| break; |
| } |
| |
| while (reg_len > 0) |
| { |
| if (region->attrib.cache) |
| res = dcache_xfer_memory (target_dcache, memaddr, myaddr, |
| reg_len, write); |
| else |
| res = do_xfer_memory (memaddr, myaddr, reg_len, write, |
| ®ion->attrib); |
| |
| if (res <= 0) |
| { |
| /* If this address is for nonexistent memory, read zeros |
| if reading, or do nothing if writing. Return |
| error. */ |
| if (!write) |
| memset (myaddr, 0, len); |
| if (errno == 0) |
| return EIO; |
| else |
| return errno; |
| } |
| |
| memaddr += res; |
| myaddr += res; |
| len -= res; |
| reg_len -= res; |
| } |
| } |
| |
| return 0; /* We managed to cover it all somehow. */ |
| } |
| |
| |
| /* Perform a partial memory transfer. |
| |
| Result is -1 on error, or the number of bytes transfered. */ |
| |
| static int |
| target_xfer_memory_partial (CORE_ADDR memaddr, char *myaddr, int len, |
| int write_p, int *err) |
| { |
| int res; |
| int reg_len; |
| struct mem_region *region; |
| |
| /* Zero length requests are ok and require no work. */ |
| if (len == 0) |
| { |
| *err = 0; |
| return 0; |
| } |
| |
| region = lookup_mem_region(memaddr); |
| if (memaddr + len < region->hi) |
| reg_len = len; |
| else |
| reg_len = region->hi - memaddr; |
| |
| switch (region->attrib.mode) |
| { |
| case MEM_RO: |
| if (write_p) |
| { |
| *err = EIO; |
| return -1; |
| } |
| break; |
| |
| case MEM_WO: |
| if (write_p) |
| { |
| *err = EIO; |
| return -1; |
| } |
| break; |
| } |
| |
| if (region->attrib.cache) |
| res = dcache_xfer_memory (target_dcache, memaddr, myaddr, |
| reg_len, write_p); |
| else |
| res = do_xfer_memory (memaddr, myaddr, reg_len, write_p, |
| ®ion->attrib); |
| |
| if (res <= 0) |
| { |
| if (errno != 0) |
| *err = errno; |
| else |
| *err = EIO; |
| |
| return -1; |
| } |
| |
| *err = 0; |
| return res; |
| } |
| |
| int |
| target_read_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err) |
| { |
| int retval; |
| |
| /* Honor 'trust-readonly-sections' if set. */ |
| if ((retval = target_read_memory_trusted (memaddr, buf, len)) > 0) |
| return retval; |
| |
| if (target_xfer_partial_p ()) |
| { |
| retval = target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, |
| NULL, buf, NULL, memaddr, len); |
| |
| if (retval <= 0) |
| { |
| if (errno) |
| *err = errno; |
| else |
| *err = EIO; |
| return -1; |
| } |
| else |
| { |
| *err = 0; |
| return retval; |
| } |
| } |
| else |
| return target_xfer_memory_partial (memaddr, buf, len, 0, err); |
| } |
| |
| int |
| target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err) |
| { |
| if (target_xfer_partial_p ()) |
| { |
| int retval; |
| |
| retval = target_xfer_partial (target_stack, TARGET_OBJECT_MEMORY, |
| NULL, NULL, buf, memaddr, len); |
| |
| if (retval <= 0) |
| { |
| if (errno) |
| *err = errno; |
| else |
| *err = EIO; |
| return -1; |
| } |
| else |
| { |
| *err = 0; |
| return retval; |
| } |
| } |
| else |
| return target_xfer_memory_partial (memaddr, buf, len, 1, err); |
| } |
| |
| /* More generic transfers. */ |
| |
| static LONGEST |
| default_xfer_partial (struct target_ops *ops, enum target_object object, |
| const char *annex, gdb_byte *readbuf, |
| const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
| { |
| if (object == TARGET_OBJECT_MEMORY |
| && ops->deprecated_xfer_memory != NULL) |
| /* If available, fall back to the target's |
| "deprecated_xfer_memory" method. */ |
| { |
| int xfered = -1; |
| errno = 0; |
| if (writebuf != NULL) |
| { |
| void *buffer = xmalloc (len); |
| struct cleanup *cleanup = make_cleanup (xfree, buffer); |
| memcpy (buffer, writebuf, len); |
| xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
| 1/*write*/, NULL, ops); |
| do_cleanups (cleanup); |
| } |
| if (readbuf != NULL) |
| xfered = ops->deprecated_xfer_memory (offset, readbuf, len, 0/*read*/, |
| NULL, ops); |
| if (xfered > 0) |
| return xfered; |
| else if (xfered == 0 && errno == 0) |
| /* "deprecated_xfer_memory" uses 0, cross checked against |
| ERRNO as one indication of an error. */ |
| return 0; |
| else |
| return -1; |
| } |
| else if (ops->beneath != NULL) |
| return target_xfer_partial (ops->beneath, object, annex, |
| readbuf, writebuf, offset, len); |
| else |
| return -1; |
| } |
| |
| /* Target vector read/write partial wrapper functions. |
| |
| NOTE: cagney/2003-10-21: I wonder if having "to_xfer_partial |
| (inbuf, outbuf)", instead of separate read/write methods, make life |
| easier. */ |
| |
| LONGEST |
| target_read_partial (struct target_ops *ops, |
| enum target_object object, |
| const char *annex, gdb_byte *buf, |
| ULONGEST offset, LONGEST len) |
| { |
| int ret; |
| |
| /* Honor 'trust-readonly-sections' if set. */ |
| if (object == TARGET_OBJECT_MEMORY) |
| if ((ret = target_read_memory_trusted (offset, buf, len)) > 0) |
| return ret; |
| |
| return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
| } |
| |
| LONGEST |
| target_write_partial (struct target_ops *ops, |
| enum target_object object, |
| const char *annex, const gdb_byte *buf, |
| ULONGEST offset, LONGEST len) |
| { |
| return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
| } |
| |
| /* Wrappers to perform the full transfer. */ |
| LONGEST |
| target_read (struct target_ops *ops, |
| enum target_object object, |
| const char *annex, gdb_byte *buf, |
| ULONGEST offset, LONGEST len) |
| { |
| LONGEST xfered = 0; |
| while (xfered < len) |
| { |
| LONGEST xfer = target_read_partial (ops, object, annex, |
| (gdb_byte *) buf + xfered, |
| offset + xfered, len - xfered); |
| /* Call an observer, notifying them of the xfer progress? */ |
| if (xfer <= 0) |
| /* Call memory_error? */ |
| return -1; |
| xfered += xfer; |
| QUIT; |
| } |
| return len; |
| } |
| |
| LONGEST |
| target_write (struct target_ops *ops, |
| enum target_object object, |
| const char *annex, const gdb_byte *buf, |
| ULONGEST offset, LONGEST len) |
| { |
| LONGEST xfered = 0; |
| while (xfered < len) |
| { |
| LONGEST xfer = target_write_partial (ops, object, annex, |
| (gdb_byte *) buf + xfered, |
| offset + xfered, len - xfered); |
| /* Call an observer, notifying them of the xfer progress? */ |
| if (xfer <= 0) |
| /* Call memory_error? */ |
| return -1; |
| xfered += xfer; |
| QUIT; |
| } |
| return len; |
| } |
| |
| /* Memory transfer methods. */ |
| |
| void |
| get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
| LONGEST len) |
| { |
| if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, buf, addr, len) |
| != len) |
| memory_error (EIO, addr); |
| } |
| |
| ULONGEST |
| get_target_memory_unsigned (struct target_ops *ops, |
| CORE_ADDR addr, int len) |
| { |
| char buf[sizeof (ULONGEST)]; |
| |
| gdb_assert (len <= sizeof (buf)); |
| get_target_memory (ops, addr, buf, len); |
| return extract_unsigned_integer (buf, len); |
| } |
| |
| static void |
| target_info (char *args, int from_tty) |
| { |
| struct target_ops *t; |
| int has_all_mem = 0; |
| |
| if (symfile_objfile != NULL) |
| printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
| |
| for (t = target_stack; t != NULL; t = t->beneath) |
| { |
| if (!t->to_has_memory) |
| continue; |
| |
| if ((int) (t->to_stratum) <= (int) dummy_stratum) |
| continue; |
| if (has_all_mem) |
| printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n")); |
| printf_unfiltered ("%s:\n", t->to_longname); |
| (t->to_files_info) (t); |
| has_all_mem = t->to_has_all_memory; |
| } |
| } |
| |
| /* This is to be called by the open routine before it does |
| anything. */ |
| |
| void |
| target_preopen (int from_tty) |
| { |
| dont_repeat (); |
| |
| if (target_has_execution) |
| { |
| if (!from_tty |
| || query (_("A program is being debugged already. Kill it? "))) |
| target_kill (); |
| else |
| error (_("Program not killed.")); |
| } |
| |
| /* Calling target_kill may remove the target from the stack. But if |
| it doesn't (which seems like a win for UDI), remove it now. */ |
| |
| if (target_has_execution) |
| pop_target (); |
| } |
| |
| /* Detach a target after doing deferred register stores. */ |
| |
| void |
| target_detach (char *args, int from_tty) |
| { |
| (current_target.to_detach) (args, from_tty); |
| } |
| |
| void |
| target_disconnect (char *args, int from_tty) |
| { |
| (current_target.to_disconnect) (args, from_tty); |
| } |
| |
| int |
| target_async_mask (int mask) |
| { |
| int saved_async_masked_status = target_async_mask_value; |
| target_async_mask_value = mask; |
| return saved_async_masked_status; |
| } |
| |
| /* Look through the list of possible targets for a target that can |
| execute a run or attach command without any other data. This is |
| used to locate the default process stratum. |
| |
| Result is always valid (error() is called for errors). */ |
| |
| static struct target_ops * |
| find_default_run_target (char *do_mesg) |
| { |
| struct target_ops **t; |
| struct target_ops *runable = NULL; |
| int count; |
| |
| count = 0; |
| |
| for (t = target_structs; t < target_structs + target_struct_size; |
| ++t) |
| { |
| if ((*t)->to_can_run && target_can_run (*t)) |
| { |
| runable = *t; |
| ++count; |
| } |
| } |
| |
| if (count != 1) |
| error (_("Don't know how to %s. Try \"help target\"."), do_mesg); |
| |
| return runable; |
| } |
| |
| void |
| find_default_attach (char *args, int from_tty) |
| { |
| struct target_ops *t; |
| |
| t = find_default_run_target ("attach"); |
| (t->to_attach) (args, from_tty); |
| return; |
| } |
| |
| void |
| find_default_create_inferior (char *exec_file, char *allargs, char **env, |
| int from_tty) |
| { |
| struct target_ops *t; |
| |
| t = find_default_run_target ("run"); |
| (t->to_create_inferior) (exec_file, allargs, env, from_tty); |
| return; |
| } |
| |
| static int |
| default_region_size_ok_for_hw_watchpoint (int byte_count) |
| { |
| return (byte_count <= TYPE_LENGTH (builtin_type_void_data_ptr)); |
| } |
| |
| static int |
| return_zero (void) |
| { |
| return 0; |
| } |
| |
| static int |
| return_one (void) |
| { |
| return 1; |
| } |
| |
| static int |
| return_minus_one (void) |
| { |
| return -1; |
| } |
| |
| /* |
| * Resize the to_sections pointer. Also make sure that anyone that |
| * was holding on to an old value of it gets updated. |
| * Returns the old size. |
| */ |
| |
| int |
| target_resize_to_sections (struct target_ops *target, int num_added) |
| { |
| struct target_ops **t; |
| struct section_table *old_value; |
| int old_count; |
| |
| old_value = target->to_sections; |
| |
| if (target->to_sections) |
| { |
| old_count = target->to_sections_end - target->to_sections; |
| target->to_sections = (struct section_table *) |
| xrealloc ((char *) target->to_sections, |
| (sizeof (struct section_table)) * (num_added + old_count)); |
| } |
| else |
| { |
| old_count = 0; |
| target->to_sections = (struct section_table *) |
| xmalloc ((sizeof (struct section_table)) * num_added); |
| } |
| target->to_sections_end = target->to_sections + (num_added + old_count); |
| |
| /* Check to see if anyone else was pointing to this structure. |
| If old_value was null, then no one was. */ |
| |
| if (old_value) |
| { |
| for (t = target_structs; t < target_structs + target_struct_size; |
| ++t) |
| { |
| if ((*t)->to_sections == old_value) |
| { |
| (*t)->to_sections = target->to_sections; |
| (*t)->to_sections_end = target->to_sections_end; |
| } |
| } |
| /* There is a flattened view of the target stack in current_target, |
| so its to_sections pointer might also need updating. */ |
| if (current_target.to_sections == old_value) |
| { |
| current_target.to_sections = target->to_sections; |
| current_target.to_sections_end = target->to_sections_end; |
| } |
| } |
| |
| return old_count; |
| |
| } |
| |
| /* Remove all target sections taken from ABFD. |
| |
| Scan the current target stack for targets whose section tables |
| refer to sections from BFD, and remove those sections. We use this |
| when we notice that the inferior has unloaded a shared object, for |
| example. */ |
| void |
| remove_target_sections (bfd *abfd) |
| { |
| struct target_ops **t; |
| |
| for (t = target_structs; t < target_structs + target_struct_size; t++) |
| { |
| struct section_table *src, *dest; |
| |
| dest = (*t)->to_sections; |
| for (src = (*t)->to_sections; src < (*t)->to_sections_end; src++) |
| if (src->bfd != abfd) |
| { |
| /* Keep this section. */ |
| if (dest < src) *dest = *src; |
| dest++; |
| } |
| |
| /* If we've dropped any sections, resize the section table. */ |
| if (dest < src) |
| target_resize_to_sections (*t, dest - src); |
| } |
| } |
| |
| |
| |
| |
| /* Find a single runnable target in the stack and return it. If for |
| some reason there is more than one, return NULL. */ |
| |
| struct target_ops * |
| find_run_target (void) |
| { |
| struct target_ops **t; |
| struct target_ops *runable = NULL; |
| int count; |
| |
| count = 0; |
| |
| for (t = target_structs; t < target_structs + target_struct_size; ++t) |
| { |
| if ((*t)->to_can_run && target_can_run (*t)) |
| { |
| runable = *t; |
| ++count; |
| } |
| } |
| |
| return (count == 1 ? runable : NULL); |
| } |
| |
| /* Find a single core_stratum target in the list of targets and return it. |
| If for some reason there is more than one, return NULL. */ |
| |
| struct target_ops * |
| find_core_target (void) |
| { |
| struct target_ops **t; |
| struct target_ops *runable = NULL; |
| int count; |
| |
| count = 0; |
| |
| for (t = target_structs; t < target_structs + target_struct_size; |
| ++t) |
| { |
| if ((*t)->to_stratum == core_stratum) |
| { |
| runable = *t; |
| ++count; |
| } |
| } |
| |
| return (count == 1 ? runable : NULL); |
| } |
| |
| /* |
| * Find the next target down the stack from the specified target. |
| */ |
| |
| struct target_ops * |
| find_target_beneath (struct target_ops *t) |
| { |
| return t->beneath; |
| } |
| |
| |
| /* The inferior process has died. Long live the inferior! */ |
| |
| void |
| generic_mourn_inferior (void) |
| { |
| extern int show_breakpoint_hit_counts; |
| |
| inferior_ptid = null_ptid; |
| attach_flag = 0; |
| breakpoint_init_inferior (inf_exited); |
| registers_changed (); |
| |
| reopen_exec_file (); |
| reinit_frame_cache (); |
| |
| /* It is confusing to the user for ignore counts to stick around |
| from previous runs of the inferior. So clear them. */ |
| /* However, it is more confusing for the ignore counts to disappear when |
| using hit counts. So don't clear them if we're counting hits. */ |
| if (!show_breakpoint_hit_counts) |
| breakpoint_clear_ignore_counts (); |
| |
| if (deprecated_detach_hook) |
| deprecated_detach_hook (); |
| } |
| |
| /* Helper function for child_wait and the Lynx derivatives of child_wait. |
| HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
| translation of that in OURSTATUS. */ |
| void |
| store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
| { |
| #ifdef CHILD_SPECIAL_WAITSTATUS |
| /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS |
| if it wants to deal with hoststatus. */ |
| if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus)) |
| return; |
| #endif |
| |
| if (WIFEXITED (hoststatus)) |
| { |
| ourstatus->kind = TARGET_WAITKIND_EXITED; |
| ourstatus->value.integer = WEXITSTATUS (hoststatus); |
| } |
| else if (!WIFSTOPPED (hoststatus)) |
| { |
| ourstatus->kind = TARGET_WAITKIND_SIGNALLED; |
| ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); |
| } |
| else |
| { |
| ourstatus->kind = TARGET_WAITKIND_STOPPED; |
| ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); |
| } |
| } |
| |
| /* Returns zero to leave the inferior alone, one to interrupt it. */ |
| int (*target_activity_function) (void); |
| int target_activity_fd; |
| |
| /* Convert a normal process ID to a string. Returns the string in a |
| static buffer. */ |
| |
| char * |
| normal_pid_to_str (ptid_t ptid) |
| { |
| static char buf[32]; |
| int size; |
| |
| size = snprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
| gdb_assert (size < sizeof buf); |
| return buf; |
| } |
| |
| /* Error-catcher for target_find_memory_regions */ |
| static int dummy_find_memory_regions (int (*ignore1) (), void *ignore2) |
| { |
| error (_("No target.")); |
| return 0; |
| } |
| |
| /* Error-catcher for target_make_corefile_notes */ |
| static char * dummy_make_corefile_notes (bfd *ignore1, int *ignore2) |
| { |
| error (_("No target.")); |
| return NULL; |
| } |
| |
| /* Set up the handful of non-empty slots needed by the dummy target |
| vector. */ |
| |
| static void |
| init_dummy_target (void) |
| { |
| dummy_target.to_shortname = "None"; |
| dummy_target.to_longname = "None"; |
| dummy_target.to_doc = ""; |
| dummy_target.to_attach = find_default_attach; |
| dummy_target.to_create_inferior = find_default_create_inferior; |
| dummy_target.to_pid_to_str = normal_pid_to_str; |
| dummy_target.to_stratum = dummy_stratum; |
| dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
| dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; |
| dummy_target.to_xfer_partial = default_xfer_partial; |
| dummy_target.to_magic = OPS_MAGIC; |
| } |
| |
| static void |
| debug_to_open (char *args, int from_tty) |
| { |
| debug_target.to_open (args, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
| } |
| |
| static void |
| debug_to_close (int quitting) |
| { |
| target_close (&debug_target, quitting); |
| fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); |
| } |
| |
| void |
| target_close (struct target_ops *targ, int quitting) |
| { |
| if (targ->to_xclose != NULL) |
| targ->to_xclose (targ, quitting); |
| else if (targ->to_close != NULL) |
| targ->to_close (quitting); |
| } |
| |
| static void |
| debug_to_attach (char *args, int from_tty) |
| { |
| debug_target.to_attach (args, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", args, from_tty); |
| } |
| |
| |
| static void |
| debug_to_post_attach (int pid) |
| { |
| debug_target.to_post_attach (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
| } |
| |
| static void |
| debug_to_detach (char *args, int from_tty) |
| { |
| debug_target.to_detach (args, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", args, from_tty); |
| } |
| |
| static void |
| debug_to_disconnect (char *args, int from_tty) |
| { |
| debug_target.to_disconnect (args, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", |
| args, from_tty); |
| } |
| |
| static void |
| debug_to_resume (ptid_t ptid, int step, enum target_signal siggnal) |
| { |
| debug_target.to_resume (ptid, step, siggnal); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", PIDGET (ptid), |
| step ? "step" : "continue", |
| target_signal_to_name (siggnal)); |
| } |
| |
| static ptid_t |
| debug_to_wait (ptid_t ptid, struct target_waitstatus *status) |
| { |
| ptid_t retval; |
| |
| retval = debug_target.to_wait (ptid, status); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_wait (%d, status) = %d, ", PIDGET (ptid), |
| PIDGET (retval)); |
| fprintf_unfiltered (gdb_stdlog, "status->kind = "); |
| switch (status->kind) |
| { |
| case TARGET_WAITKIND_EXITED: |
| fprintf_unfiltered (gdb_stdlog, "exited, status = %d\n", |
| status->value.integer); |
| break; |
| case TARGET_WAITKIND_STOPPED: |
| fprintf_unfiltered (gdb_stdlog, "stopped, signal = %s\n", |
| target_signal_to_name (status->value.sig)); |
| break; |
| case TARGET_WAITKIND_SIGNALLED: |
| fprintf_unfiltered (gdb_stdlog, "signalled, signal = %s\n", |
| target_signal_to_name (status->value.sig)); |
| break; |
| case TARGET_WAITKIND_LOADED: |
| fprintf_unfiltered (gdb_stdlog, "loaded\n"); |
| break; |
| case TARGET_WAITKIND_FORKED: |
| fprintf_unfiltered (gdb_stdlog, "forked\n"); |
| break; |
| case TARGET_WAITKIND_VFORKED: |
| fprintf_unfiltered (gdb_stdlog, "vforked\n"); |
| break; |
| case TARGET_WAITKIND_EXECD: |
| fprintf_unfiltered (gdb_stdlog, "execd\n"); |
| break; |
| case TARGET_WAITKIND_SPURIOUS: |
| fprintf_unfiltered (gdb_stdlog, "spurious\n"); |
| break; |
| default: |
| fprintf_unfiltered (gdb_stdlog, "unknown???\n"); |
| break; |
| } |
| |
| return retval; |
| } |
| |
| static void |
| debug_print_register (const char * func, int regno) |
| { |
| fprintf_unfiltered (gdb_stdlog, "%s ", func); |
| if (regno >= 0 && regno < NUM_REGS + NUM_PSEUDO_REGS |
| && REGISTER_NAME (regno) != NULL && REGISTER_NAME (regno)[0] != '\0') |
| fprintf_unfiltered (gdb_stdlog, "(%s)", REGISTER_NAME (regno)); |
| else |
| fprintf_unfiltered (gdb_stdlog, "(%d)", regno); |
| if (regno >= 0) |
| { |
| int i; |
| unsigned char buf[MAX_REGISTER_SIZE]; |
| deprecated_read_register_gen (regno, buf); |
| fprintf_unfiltered (gdb_stdlog, " = "); |
| for (i = 0; i < register_size (current_gdbarch, regno); i++) |
| { |
| fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); |
| } |
| if (register_size (current_gdbarch, regno) <= sizeof (LONGEST)) |
| { |
| fprintf_unfiltered (gdb_stdlog, " 0x%s %s", |
| paddr_nz (read_register (regno)), |
| paddr_d (read_register (regno))); |
| } |
| } |
| fprintf_unfiltered (gdb_stdlog, "\n"); |
| } |
| |
| static void |
| debug_to_fetch_registers (int regno) |
| { |
| debug_target.to_fetch_registers (regno); |
| debug_print_register ("target_fetch_registers", regno); |
| } |
| |
| static void |
| debug_to_store_registers (int regno) |
| { |
| debug_target.to_store_registers (regno); |
| debug_print_register ("target_store_registers", regno); |
| fprintf_unfiltered (gdb_stdlog, "\n"); |
| } |
| |
| static void |
| debug_to_prepare_to_store (void) |
| { |
| debug_target.to_prepare_to_store (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
| } |
| |
| static int |
| deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
| int write, struct mem_attrib *attrib, |
| struct target_ops *target) |
| { |
| int retval; |
| |
| retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
| attrib, target); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d", |
| (unsigned int) memaddr, /* possable truncate long long */ |
| len, write ? "write" : "read", retval); |
| |
| if (retval > 0) |
| { |
| int i; |
| |
| fputs_unfiltered (", bytes =", gdb_stdlog); |
| for (i = 0; i < retval; i++) |
| { |
| if ((((long) &(myaddr[i])) & 0xf) == 0) |
| { |
| if (targetdebug < 2 && i > 0) |
| { |
| fprintf_unfiltered (gdb_stdlog, " ..."); |
| break; |
| } |
| fprintf_unfiltered (gdb_stdlog, "\n"); |
| } |
| |
| fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
| } |
| } |
| |
| fputc_unfiltered ('\n', gdb_stdlog); |
| |
| return retval; |
| } |
| |
| static void |
| debug_to_files_info (struct target_ops *target) |
| { |
| debug_target.to_files_info (target); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
| } |
| |
| static int |
| debug_to_insert_breakpoint (CORE_ADDR addr, gdb_byte *save) |
| { |
| int retval; |
| |
| retval = debug_target.to_insert_breakpoint (addr, save); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_insert_breakpoint (0x%lx, xxx) = %ld\n", |
| (unsigned long) addr, |
| (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_remove_breakpoint (CORE_ADDR addr, gdb_byte *save) |
| { |
| int retval; |
| |
| retval = debug_target.to_remove_breakpoint (addr, save); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_remove_breakpoint (0x%lx, xxx) = %ld\n", |
| (unsigned long) addr, |
| (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) |
| { |
| int retval; |
| |
| retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", |
| (unsigned long) type, |
| (unsigned long) cnt, |
| (unsigned long) from_tty, |
| (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_region_size_ok_for_hw_watchpoint (int byte_count) |
| { |
| CORE_ADDR retval; |
| |
| retval = debug_target.to_region_size_ok_for_hw_watchpoint (byte_count); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT (%ld) = 0x%lx\n", |
| (unsigned long) byte_count, |
| (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_stopped_by_watchpoint (void) |
| { |
| int retval; |
| |
| retval = debug_target.to_stopped_by_watchpoint (); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "STOPPED_BY_WATCHPOINT () = %ld\n", |
| (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) |
| { |
| int retval; |
| |
| retval = debug_target.to_stopped_data_address (target, addr); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_stopped_data_address ([0x%lx]) = %ld\n", |
| (unsigned long)*addr, |
| (unsigned long)retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_insert_hw_breakpoint (CORE_ADDR addr, gdb_byte *save) |
| { |
| int retval; |
| |
| retval = debug_target.to_insert_hw_breakpoint (addr, save); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", |
| (unsigned long) addr, |
| (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_remove_hw_breakpoint (CORE_ADDR addr, gdb_byte *save) |
| { |
| int retval; |
| |
| retval = debug_target.to_remove_hw_breakpoint (addr, save); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", |
| (unsigned long) addr, |
| (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) |
| { |
| int retval; |
| |
| retval = debug_target.to_insert_watchpoint (addr, len, type); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", |
| (unsigned long) addr, len, type, (unsigned long) retval); |
| return retval; |
| } |
| |
| static int |
| debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) |
| { |
| int retval; |
| |
| retval = debug_target.to_insert_watchpoint (addr, len, type); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", |
| (unsigned long) addr, len, type, (unsigned long) retval); |
| return retval; |
| } |
| |
| static void |
| debug_to_terminal_init (void) |
| { |
| debug_target.to_terminal_init (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
| } |
| |
| static void |
| debug_to_terminal_inferior (void) |
| { |
| debug_target.to_terminal_inferior (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
| } |
| |
| static void |
| debug_to_terminal_ours_for_output (void) |
| { |
| debug_target.to_terminal_ours_for_output (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
| } |
| |
| static void |
| debug_to_terminal_ours (void) |
| { |
| debug_target.to_terminal_ours (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
| } |
| |
| static void |
| debug_to_terminal_save_ours (void) |
| { |
| debug_target.to_terminal_save_ours (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); |
| } |
| |
| static void |
| debug_to_terminal_info (char *arg, int from_tty) |
| { |
| debug_target.to_terminal_info (arg, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
| from_tty); |
| } |
| |
| static void |
| debug_to_kill (void) |
| { |
| debug_target.to_kill (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); |
| } |
| |
| static void |
| debug_to_load (char *args, int from_tty) |
| { |
| debug_target.to_load (args, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
| } |
| |
| static int |
| debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
| { |
| int retval; |
| |
| retval = debug_target.to_lookup_symbol (name, addrp); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
| |
| return retval; |
| } |
| |
| static void |
| debug_to_create_inferior (char *exec_file, char *args, char **env, |
| int from_tty) |
| { |
| debug_target.to_create_inferior (exec_file, args, env, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx, %d)\n", |
| exec_file, args, from_tty); |
| } |
| |
| static void |
| debug_to_post_startup_inferior (ptid_t ptid) |
| { |
| debug_target.to_post_startup_inferior (ptid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
| PIDGET (ptid)); |
| } |
| |
| static void |
| debug_to_acknowledge_created_inferior (int pid) |
| { |
| debug_target.to_acknowledge_created_inferior (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", |
| pid); |
| } |
| |
| static void |
| debug_to_insert_fork_catchpoint (int pid) |
| { |
| debug_target.to_insert_fork_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n", |
| pid); |
| } |
| |
| static int |
| debug_to_remove_fork_catchpoint (int pid) |
| { |
| int retval; |
| |
| retval = debug_target.to_remove_fork_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
| pid, retval); |
| |
| return retval; |
| } |
| |
| static void |
| debug_to_insert_vfork_catchpoint (int pid) |
| { |
| debug_target.to_insert_vfork_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n", |
| pid); |
| } |
| |
| static int |
| debug_to_remove_vfork_catchpoint (int pid) |
| { |
| int retval; |
| |
| retval = debug_target.to_remove_vfork_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
| pid, retval); |
| |
| return retval; |
| } |
| |
| static int |
| debug_to_follow_fork (int follow_child) |
| { |
| int retval = debug_target.to_follow_fork (follow_child); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", |
| follow_child, retval); |
| |
| return retval; |
| } |
| |
| static void |
| debug_to_insert_exec_catchpoint (int pid) |
| { |
| debug_target.to_insert_exec_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n", |
| pid); |
| } |
| |
| static int |
| debug_to_remove_exec_catchpoint (int pid) |
| { |
| int retval; |
| |
| retval = debug_target.to_remove_exec_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
| pid, retval); |
| |
| return retval; |
| } |
| |
| static int |
| debug_to_reported_exec_events_per_exec_call (void) |
| { |
| int reported_exec_events; |
| |
| reported_exec_events = debug_target.to_reported_exec_events_per_exec_call (); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_reported_exec_events_per_exec_call () = %d\n", |
| reported_exec_events); |
| |
| return reported_exec_events; |
| } |
| |
| static int |
| debug_to_has_exited (int pid, int wait_status, int *exit_status) |
| { |
| int has_exited; |
| |
| has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
| pid, wait_status, *exit_status, has_exited); |
| |
| return has_exited; |
| } |
| |
| static void |
| debug_to_mourn_inferior (void) |
| { |
| debug_target.to_mourn_inferior (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); |
| } |
| |
| static int |
| debug_to_can_run (void) |
| { |
| int retval; |
| |
| retval = debug_target.to_can_run (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
| |
| return retval; |
| } |
| |
| static void |
| debug_to_notice_signals (ptid_t ptid) |
| { |
| debug_target.to_notice_signals (ptid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
| PIDGET (ptid)); |
| } |
| |
| static int |
| debug_to_thread_alive (ptid_t ptid) |
| { |
| int retval; |
| |
| retval = debug_target.to_thread_alive (ptid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", |
| PIDGET (ptid), retval); |
| |
| return retval; |
| } |
| |
| static void |
| debug_to_find_new_threads (void) |
| { |
| debug_target.to_find_new_threads (); |
| |
| fputs_unfiltered ("target_find_new_threads ()\n", gdb_stdlog); |
| } |
| |
| static void |
| debug_to_stop (void) |
| { |
| debug_target.to_stop (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_stop ()\n"); |
| } |
| |
| static void |
| debug_to_rcmd (char *command, |
| struct ui_file *outbuf) |
| { |
| debug_target.to_rcmd (command, outbuf); |
| fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
| } |
| |
| static struct symtab_and_line * |
| debug_to_enable_exception_callback (enum exception_event_kind kind, int enable) |
| { |
| struct symtab_and_line *result; |
| result = debug_target.to_enable_exception_callback (kind, enable); |
| fprintf_unfiltered (gdb_stdlog, |
| "target get_exception_callback_sal (%d, %d)\n", |
| kind, enable); |
| return result; |
| } |
| |
| static struct exception_event_record * |
| debug_to_get_current_exception_event (void) |
| { |
| struct exception_event_record *result; |
| result = debug_target.to_get_current_exception_event (); |
| fprintf_unfiltered (gdb_stdlog, "target get_current_exception_event ()\n"); |
| return result; |
| } |
| |
| static char * |
| debug_to_pid_to_exec_file (int pid) |
| { |
| char *exec_file; |
| |
| exec_file = debug_target.to_pid_to_exec_file (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
| pid, exec_file); |
| |
| return exec_file; |
| } |
| |
| static void |
| setup_target_debug (void) |
| { |
| memcpy (&debug_target, ¤t_target, sizeof debug_target); |
| |
| current_target.to_open = debug_to_open; |
| current_target.to_close = debug_to_close; |
| current_target.to_attach = debug_to_attach; |
| current_target.to_post_attach = debug_to_post_attach; |
| current_target.to_detach = debug_to_detach; |
| current_target.to_disconnect = debug_to_disconnect; |
| current_target.to_resume = debug_to_resume; |
| current_target.to_wait = debug_to_wait; |
| current_target.to_fetch_registers = debug_to_fetch_registers; |
| current_target.to_store_registers = debug_to_store_registers; |
| current_target.to_prepare_to_store = debug_to_prepare_to_store; |
| current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
| current_target.to_files_info = debug_to_files_info; |
| current_target.to_insert_breakpoint = debug_to_insert_breakpoint; |
| current_target.to_remove_breakpoint = debug_to_remove_breakpoint; |
| current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
| current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; |
| current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; |
| current_target.to_insert_watchpoint = debug_to_insert_watchpoint; |
| current_target.to_remove_watchpoint = debug_to_remove_watchpoint; |
| current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; |
| current_target.to_stopped_data_address = debug_to_stopped_data_address; |
| current_target.to_region_size_ok_for_hw_watchpoint = debug_to_region_size_ok_for_hw_watchpoint; |
| current_target.to_terminal_init = debug_to_terminal_init; |
| current_target.to_terminal_inferior = debug_to_terminal_inferior; |
| current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; |
| current_target.to_terminal_ours = debug_to_terminal_ours; |
| current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
| current_target.to_terminal_info = debug_to_terminal_info; |
| current_target.to_kill = debug_to_kill; |
| current_target.to_load = debug_to_load; |
| current_target.to_lookup_symbol = debug_to_lookup_symbol; |
| current_target.to_create_inferior = debug_to_create_inferior; |
| current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
| current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; |
| current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
| current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; |
| current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; |
| current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; |
| current_target.to_follow_fork = debug_to_follow_fork; |
| current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
| current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; |
| current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call; |
| current_target.to_has_exited = debug_to_has_exited; |
| current_target.to_mourn_inferior = debug_to_mourn_inferior; |
| current_target.to_can_run = debug_to_can_run; |
| current_target.to_notice_signals = debug_to_notice_signals; |
| current_target.to_thread_alive = debug_to_thread_alive; |
| current_target.to_find_new_threads = debug_to_find_new_threads; |
| current_target.to_stop = debug_to_stop; |
| current_target.to_rcmd = debug_to_rcmd; |
| current_target.to_enable_exception_callback = debug_to_enable_exception_callback; |
| current_target.to_get_current_exception_event = debug_to_get_current_exception_event; |
| current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
| |
| } |
| |
| |
| static char targ_desc[] = |
| "Names of targets and files being debugged.\n\ |
| Shows the entire stack of targets currently in use (including the exec-file,\n\ |
| core-file, and process, if any), as well as the symbol file name."; |
| |
| static void |
| do_monitor_command (char *cmd, |
| int from_tty) |
| { |
| if ((current_target.to_rcmd |
| == (void (*) (char *, struct ui_file *)) tcomplain) |
| || (current_target.to_rcmd == debug_to_rcmd |
| && (debug_target.to_rcmd |
| == (void (*) (char *, struct ui_file *)) tcomplain))) |
| error (_("\"monitor\" command not supported by this target.")); |
| target_rcmd (cmd, gdb_stdtarg); |
| } |
| |
| void |
| initialize_targets (void) |
| { |
| init_dummy_target (); |
| push_target (&dummy_target); |
| |
| add_info ("target", target_info, targ_desc); |
| add_info ("files", target_info, targ_desc); |
| |
| add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
| Set target debugging."), _("\ |
| Show target debugging."), _("\ |
| When non-zero, target debugging is enabled. Higher numbers are more\n\ |
| verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ |
| command."), |
| NULL, |
| show_targetdebug, |
| &setdebuglist, &showdebuglist); |
| |
| add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
| &trust_readonly, _("\ |
| Set mode for reading from readonly sections."), _("\ |
| Show mode for reading from readonly sections."), _("\ |
| When this mode is on, memory reads from readonly sections (such as .text)\n\ |
| will be read from the object file instead of from the target. This will\n\ |
| result in significant performance improvement for remote targets."), |
| NULL, |
| show_trust_readonly, |
| &setlist, &showlist); |
| |
| add_com ("monitor", class_obscure, do_monitor_command, |
| _("Send a command to the remote monitor (remote targets only).")); |
| |
| target_dcache = dcache_init (); |
| } |