| /* Select target systems and architectures at runtime for GDB. |
| Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 2000, 2001 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" |
| |
| extern int errno; |
| |
| static void target_info (char *, int); |
| |
| static void cleanup_target (struct target_ops *); |
| |
| static void maybe_kill_then_create_inferior (char *, char *, char **); |
| |
| static void default_clone_and_follow_inferior (int, 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 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); |
| |
| void target_ignore (void); |
| |
| static void target_command (char *, int); |
| |
| static struct target_ops *find_default_run_target (char *); |
| |
| static void update_current_target (void); |
| |
| static void nosupport_runtime (void); |
| |
| static void normal_target_post_startup_inferior (int pid); |
| |
| /* 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, char *myaddr, int len, int write); |
| |
| static void init_dummy_target (void); |
| |
| 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_resume (int, int, enum target_signal); |
| |
| static int debug_to_wait (int, 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 int |
| debug_to_xfer_memory (CORE_ADDR, char *, int, int, struct mem_attrib *, |
| struct target_ops *); |
| |
| static void debug_to_files_info (struct target_ops *); |
| |
| static int debug_to_insert_breakpoint (CORE_ADDR, char *); |
| |
| static int debug_to_remove_breakpoint (CORE_ADDR, char *); |
| |
| 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_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_create_inferior (char *, char *, char **); |
| |
| static void debug_to_mourn_inferior (void); |
| |
| static int debug_to_can_run (void); |
| |
| static void debug_to_notice_signals (int); |
| |
| static int debug_to_thread_alive (int); |
| |
| static void debug_to_stop (void); |
| |
| static int debug_to_query (int /*char */ , char *, char *, int *); |
| |
| /* 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. */ |
| |
| struct target_stack_item *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 setup_target_debug (void); |
| |
| DCACHE *target_dcache; |
| |
| /* The user just typed 'target' without the name of a target. */ |
| |
| /* ARGSUSED */ |
| 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) |
| { |
| 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; |
| /* cleanup_target (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); |
| } |
| |
| /* ARGSUSED */ |
| 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."); |
| } |
| |
| /* ARGSUSED */ |
| static int |
| nosymbol (char *name, CORE_ADDR *addrp) |
| { |
| return 1; /* Symbol does not exist in target env */ |
| } |
| |
| /* ARGSUSED */ |
| static void |
| nosupport_runtime (void) |
| { |
| if (!inferior_pid) |
| noprocess (); |
| else |
| error ("No run-time support for this"); |
| } |
| |
| |
| /* ARGSUSED */ |
| 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) |
| { |
| kill_or_be_killed (0); |
| target_create_inferior (exec, args, env); |
| } |
| |
| static void |
| default_clone_and_follow_inferior (int child_pid, int *followed_child) |
| { |
| target_clone_and_follow_inferior (child_pid, followed_child); |
| } |
| |
| /* Clean up a target struct so it no longer has any zero pointers in it. |
| We default entries, at least to stubs that print error messages. */ |
| |
| static void |
| cleanup_target (struct target_ops *t) |
| { |
| |
| #define de_fault(field, value) \ |
| if (!t->field) \ |
| t->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_require_attach, |
| maybe_kill_then_attach); |
| de_fault (to_detach, |
| (void (*) (char *, int)) |
| target_ignore); |
| de_fault (to_require_detach, |
| (void (*) (int, char *, int)) |
| target_ignore); |
| de_fault (to_resume, |
| (void (*) (int, int, enum target_signal)) |
| noprocess); |
| de_fault (to_wait, |
| (int (*) (int, struct target_waitstatus *)) |
| noprocess); |
| de_fault (to_post_wait, |
| (void (*) (int, int)) |
| target_ignore); |
| 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 (to_xfer_memory, |
| (int (*) (CORE_ADDR, char *, 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_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_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 (*) (int)) |
| target_ignore); |
| de_fault (to_acknowledge_created_inferior, |
| (void (*) (int)) |
| target_ignore); |
| de_fault (to_clone_and_follow_inferior, |
| default_clone_and_follow_inferior); |
| de_fault (to_post_follow_inferior_by_clone, |
| (void (*) (void)) |
| target_ignore); |
| de_fault (to_insert_fork_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_remove_fork_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_insert_vfork_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_remove_vfork_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_has_forked, |
| (int (*) (int, int *)) |
| return_zero); |
| de_fault (to_has_vforked, |
| (int (*) (int, int *)) |
| return_zero); |
| de_fault (to_can_follow_vfork_prior_to_exec, |
| (int (*) (void)) |
| return_zero); |
| de_fault (to_post_follow_vfork, |
| (void (*) (int, int, int, int)) |
| target_ignore); |
| de_fault (to_insert_exec_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_remove_exec_catchpoint, |
| (int (*) (int)) |
| tcomplain); |
| de_fault (to_has_execd, |
| (int (*) (int, char **)) |
| return_zero); |
| de_fault (to_reported_exec_events_per_exec_call, |
| (int (*) (void)) |
| return_one); |
| de_fault (to_has_syscall_event, |
| (int (*) (int, enum target_waitkind *, int *)) |
| return_zero); |
| 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 (*) (int)) |
| target_ignore); |
| de_fault (to_thread_alive, |
| (int (*) (int)) |
| 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); |
| de_fault (to_query, |
| (int (*) (int, char *, char *, int *)) |
| return_zero); |
| 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_core_file_to_sym_file, |
| (char *(*) (char *)) |
| 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 |
| } |
| |
| /* Go through the target stack from top to bottom, copying over zero entries in |
| current_target. In effect, we are doing class inheritance through the |
| pushed target vectors. */ |
| |
| static void |
| update_current_target (void) |
| { |
| struct target_stack_item *item; |
| struct target_ops *t; |
| |
| /* First, reset current_target */ |
| memset (¤t_target, 0, sizeof current_target); |
| |
| for (item = target_stack; item; item = item->next) |
| { |
| t = item->target_ops; |
| |
| #define INHERIT(FIELD, TARGET) \ |
| if (!current_target.FIELD) \ |
| current_target.FIELD = TARGET->FIELD |
| |
| 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_require_attach, t); |
| INHERIT (to_detach, t); |
| INHERIT (to_require_detach, t); |
| INHERIT (to_resume, t); |
| INHERIT (to_wait, t); |
| INHERIT (to_post_wait, t); |
| INHERIT (to_fetch_registers, t); |
| INHERIT (to_store_registers, t); |
| INHERIT (to_prepare_to_store, t); |
| INHERIT (to_xfer_memory, t); |
| INHERIT (to_files_info, t); |
| INHERIT (to_insert_breakpoint, t); |
| INHERIT (to_remove_breakpoint, 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_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_clone_and_follow_inferior, t); |
| INHERIT (to_post_follow_inferior_by_clone, 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_has_forked, t); |
| INHERIT (to_has_vforked, t); |
| INHERIT (to_can_follow_vfork_prior_to_exec, t); |
| INHERIT (to_post_follow_vfork, t); |
| INHERIT (to_insert_exec_catchpoint, t); |
| INHERIT (to_remove_exec_catchpoint, t); |
| INHERIT (to_has_execd, t); |
| INHERIT (to_reported_exec_events_per_exec_call, t); |
| INHERIT (to_has_syscall_event, 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); |
| INHERIT (to_query, t); |
| 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_core_file_to_sym_file, t); |
| INHERIT (to_stratum, t); |
| INHERIT (DONT_USE, 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_magic, t); |
| |
| #undef INHERIT |
| } |
| } |
| |
| /* 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_stack_item *cur, *prev, *tmp; |
| |
| /* 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 (prev = NULL, cur = target_stack; cur; prev = cur, cur = cur->next) |
| { |
| if ((int) (t->to_stratum) >= (int) (cur->target_ops->to_stratum)) |
| break; |
| } |
| |
| /* If there's already targets at this stratum, remove them. */ |
| |
| if (cur) |
| while (t->to_stratum == cur->target_ops->to_stratum) |
| { |
| /* There's already something on this stratum. Close it off. */ |
| if (cur->target_ops->to_close) |
| (cur->target_ops->to_close) (0); |
| if (prev) |
| prev->next = cur->next; /* Unchain old target_ops */ |
| else |
| target_stack = cur->next; /* Unchain first on list */ |
| tmp = cur->next; |
| xfree (cur); |
| cur = tmp; |
| } |
| |
| /* We have removed all targets in our stratum, now add the new one. */ |
| |
| tmp = (struct target_stack_item *) |
| xmalloc (sizeof (struct target_stack_item)); |
| tmp->next = cur; |
| tmp->target_ops = t; |
| |
| if (prev) |
| prev->next = tmp; |
| else |
| target_stack = tmp; |
| |
| update_current_target (); |
| |
| cleanup_target (¤t_target); /* Fill in the gaps */ |
| |
| if (targetdebug) |
| setup_target_debug (); |
| |
| return prev != 0; |
| } |
| |
| /* 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_stack_item *cur, *prev; |
| |
| if (t->to_close) |
| t->to_close (0); /* Let it clean up */ |
| |
| /* Look for the specified target. Note that we assume that a target |
| can only occur once in the target stack. */ |
| |
| for (cur = target_stack, prev = NULL; cur; prev = cur, cur = cur->next) |
| if (cur->target_ops == t) |
| break; |
| |
| if (!cur) |
| return 0; /* Didn't find target_ops, quit now */ |
| |
| /* Unchain the target */ |
| |
| if (!prev) |
| target_stack = cur->next; |
| else |
| prev->next = cur->next; |
| |
| xfree (cur); /* Release the target_stack_item */ |
| |
| update_current_target (); |
| cleanup_target (¤t_target); |
| |
| return 1; |
| } |
| |
| void |
| pop_target (void) |
| { |
| (current_target.to_close) (0); /* Let it clean up */ |
| if (unpush_target (target_stack->target_ops) == 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; |
| char 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_xfer_memory (memaddr & ~3, buf, 4, 0); |
| 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_xfer_memory (memaddr, buf, 1, 0); |
| 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; |
| } |
| |
| /* 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, char *myaddr, int len) |
| { |
| return target_xfer_memory (memaddr, myaddr, len, 0); |
| } |
| |
| int |
| target_write_memory (CORE_ADDR memaddr, char *myaddr, int len) |
| { |
| return target_xfer_memory (memaddr, myaddr, len, 1); |
| } |
| |
| /* 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, char *myaddr, int len, int write, |
| struct mem_attrib *attrib) |
| { |
| int res; |
| int done = 0; |
| struct target_ops *t; |
| struct target_stack_item *item; |
| |
| /* Zero length requests are ok and require no work. */ |
| if (len == 0) |
| return 0; |
| |
| /* to_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.to_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 (item = target_stack; item; item = item->next) |
| { |
| t = item->target_ops; |
| if (!t->to_has_memory) |
| continue; |
| |
| res = t->to_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, char *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) |
| { |
| return target_xfer_memory_partial (memaddr, buf, len, 0, err); |
| } |
| |
| int |
| target_write_memory_partial (CORE_ADDR memaddr, char *buf, int len, int *err) |
| { |
| return target_xfer_memory_partial (memaddr, buf, len, 1, err); |
| } |
| |
| /* ARGSUSED */ |
| static void |
| target_info (char *args, int from_tty) |
| { |
| struct target_ops *t; |
| struct target_stack_item *item; |
| int has_all_mem = 0; |
| |
| if (symfile_objfile != NULL) |
| printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name); |
| |
| #ifdef FILES_INFO_HOOK |
| if (FILES_INFO_HOOK ()) |
| return; |
| #endif |
| |
| for (item = target_stack; item; item = item->next) |
| { |
| t = item->target_ops; |
| |
| 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) |
| { |
| /* Handle any optimized stores to the inferior. */ |
| #ifdef DO_DEFERRED_STORES |
| DO_DEFERRED_STORES; |
| #endif |
| (current_target.to_detach) (args, from_tty); |
| } |
| |
| void |
| target_link (char *modname, CORE_ADDR *t_reloc) |
| { |
| if (STREQ (current_target.to_shortname, "rombug")) |
| { |
| (current_target.to_lookup_symbol) (modname, t_reloc); |
| if (*t_reloc == 0) |
| error ("Unable to link to %s and get relocation in rombug", modname); |
| } |
| else |
| *t_reloc = (CORE_ADDR) -1; |
| } |
| |
| 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_require_attach (char *args, int from_tty) |
| { |
| struct target_ops *t; |
| |
| t = find_default_run_target ("require_attach"); |
| (t->to_require_attach) (args, from_tty); |
| return; |
| } |
| |
| void |
| find_default_require_detach (int pid, char *args, int from_tty) |
| { |
| struct target_ops *t; |
| |
| t = find_default_run_target ("require_detach"); |
| (t->to_require_detach) (pid, args, from_tty); |
| return; |
| } |
| |
| void |
| find_default_create_inferior (char *exec_file, char *allargs, char **env) |
| { |
| struct target_ops *t; |
| |
| t = find_default_run_target ("run"); |
| (t->to_create_inferior) (exec_file, allargs, env); |
| return; |
| } |
| |
| void |
| find_default_clone_and_follow_inferior (int child_pid, int *followed_child) |
| { |
| struct target_ops *t; |
| |
| t = find_default_run_target ("run"); |
| (t->to_clone_and_follow_inferior) (child_pid, followed_child); |
| return; |
| } |
| |
| static int |
| return_zero (void) |
| { |
| return 0; |
| } |
| |
| static int |
| return_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; |
| } |
| } |
| } |
| |
| 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) |
| { |
| struct target_stack_item *cur; |
| |
| for (cur = target_stack; cur; cur = cur->next) |
| if (cur->target_ops == t) |
| break; |
| |
| if (cur == NULL || cur->next == NULL) |
| return NULL; |
| else |
| return cur->next->target_ops; |
| } |
| |
| |
| /* The inferior process has died. Long live the inferior! */ |
| |
| void |
| generic_mourn_inferior (void) |
| { |
| extern int show_breakpoint_hit_counts; |
| |
| inferior_pid = 0; |
| attach_flag = 0; |
| breakpoint_init_inferior (inf_exited); |
| registers_changed (); |
| |
| #ifdef CLEAR_DEFERRED_STORES |
| /* Delete any pending stores to the inferior... */ |
| CLEAR_DEFERRED_STORES; |
| #endif |
| |
| 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 (detach_hook) |
| detach_hook (); |
| } |
| |
| /* This table must match in order and size the signals in enum target_signal |
| in target.h. */ |
| /* *INDENT-OFF* */ |
| static struct { |
| char *name; |
| char *string; |
| } signals [] = |
| { |
| {"0", "Signal 0"}, |
| {"SIGHUP", "Hangup"}, |
| {"SIGINT", "Interrupt"}, |
| {"SIGQUIT", "Quit"}, |
| {"SIGILL", "Illegal instruction"}, |
| {"SIGTRAP", "Trace/breakpoint trap"}, |
| {"SIGABRT", "Aborted"}, |
| {"SIGEMT", "Emulation trap"}, |
| {"SIGFPE", "Arithmetic exception"}, |
| {"SIGKILL", "Killed"}, |
| {"SIGBUS", "Bus error"}, |
| {"SIGSEGV", "Segmentation fault"}, |
| {"SIGSYS", "Bad system call"}, |
| {"SIGPIPE", "Broken pipe"}, |
| {"SIGALRM", "Alarm clock"}, |
| {"SIGTERM", "Terminated"}, |
| {"SIGURG", "Urgent I/O condition"}, |
| {"SIGSTOP", "Stopped (signal)"}, |
| {"SIGTSTP", "Stopped (user)"}, |
| {"SIGCONT", "Continued"}, |
| {"SIGCHLD", "Child status changed"}, |
| {"SIGTTIN", "Stopped (tty input)"}, |
| {"SIGTTOU", "Stopped (tty output)"}, |
| {"SIGIO", "I/O possible"}, |
| {"SIGXCPU", "CPU time limit exceeded"}, |
| {"SIGXFSZ", "File size limit exceeded"}, |
| {"SIGVTALRM", "Virtual timer expired"}, |
| {"SIGPROF", "Profiling timer expired"}, |
| {"SIGWINCH", "Window size changed"}, |
| {"SIGLOST", "Resource lost"}, |
| {"SIGUSR1", "User defined signal 1"}, |
| {"SIGUSR2", "User defined signal 2"}, |
| {"SIGPWR", "Power fail/restart"}, |
| {"SIGPOLL", "Pollable event occurred"}, |
| {"SIGWIND", "SIGWIND"}, |
| {"SIGPHONE", "SIGPHONE"}, |
| {"SIGWAITING", "Process's LWPs are blocked"}, |
| {"SIGLWP", "Signal LWP"}, |
| {"SIGDANGER", "Swap space dangerously low"}, |
| {"SIGGRANT", "Monitor mode granted"}, |
| {"SIGRETRACT", "Need to relinquish monitor mode"}, |
| {"SIGMSG", "Monitor mode data available"}, |
| {"SIGSOUND", "Sound completed"}, |
| {"SIGSAK", "Secure attention"}, |
| {"SIGPRIO", "SIGPRIO"}, |
| {"SIG33", "Real-time event 33"}, |
| {"SIG34", "Real-time event 34"}, |
| {"SIG35", "Real-time event 35"}, |
| {"SIG36", "Real-time event 36"}, |
| {"SIG37", "Real-time event 37"}, |
| {"SIG38", "Real-time event 38"}, |
| {"SIG39", "Real-time event 39"}, |
| {"SIG40", "Real-time event 40"}, |
| {"SIG41", "Real-time event 41"}, |
| {"SIG42", "Real-time event 42"}, |
| {"SIG43", "Real-time event 43"}, |
| {"SIG44", "Real-time event 44"}, |
| {"SIG45", "Real-time event 45"}, |
| {"SIG46", "Real-time event 46"}, |
| {"SIG47", "Real-time event 47"}, |
| {"SIG48", "Real-time event 48"}, |
| {"SIG49", "Real-time event 49"}, |
| {"SIG50", "Real-time event 50"}, |
| {"SIG51", "Real-time event 51"}, |
| {"SIG52", "Real-time event 52"}, |
| {"SIG53", "Real-time event 53"}, |
| {"SIG54", "Real-time event 54"}, |
| {"SIG55", "Real-time event 55"}, |
| {"SIG56", "Real-time event 56"}, |
| {"SIG57", "Real-time event 57"}, |
| {"SIG58", "Real-time event 58"}, |
| {"SIG59", "Real-time event 59"}, |
| {"SIG60", "Real-time event 60"}, |
| {"SIG61", "Real-time event 61"}, |
| {"SIG62", "Real-time event 62"}, |
| {"SIG63", "Real-time event 63"}, |
| {"SIGCANCEL", "LWP internal signal"}, |
| {"SIG32", "Real-time event 32"}, |
| {"SIG64", "Real-time event 64"}, |
| |
| #if defined(MACH) || defined(__MACH__) |
| /* Mach exceptions */ |
| {"EXC_BAD_ACCESS", "Could not access memory"}, |
| {"EXC_BAD_INSTRUCTION", "Illegal instruction/operand"}, |
| {"EXC_ARITHMETIC", "Arithmetic exception"}, |
| {"EXC_EMULATION", "Emulation instruction"}, |
| {"EXC_SOFTWARE", "Software generated exception"}, |
| {"EXC_BREAKPOINT", "Breakpoint"}, |
| #endif |
| {"SIGINFO", "Information request"}, |
| |
| {NULL, "Unknown signal"}, |
| {NULL, "Internal error: printing TARGET_SIGNAL_DEFAULT"}, |
| |
| /* Last entry, used to check whether the table is the right size. */ |
| {NULL, "TARGET_SIGNAL_MAGIC"} |
| }; |
| /* *INDENT-ON* */ |
| |
| |
| |
| /* Return the string for a signal. */ |
| char * |
| target_signal_to_string (enum target_signal sig) |
| { |
| if ((sig >= TARGET_SIGNAL_FIRST) && (sig <= TARGET_SIGNAL_LAST)) |
| return signals[sig].string; |
| else |
| return signals[TARGET_SIGNAL_UNKNOWN].string; |
| } |
| |
| /* Return the name for a signal. */ |
| char * |
| target_signal_to_name (enum target_signal sig) |
| { |
| if (sig == TARGET_SIGNAL_UNKNOWN) |
| /* I think the code which prints this will always print it along with |
| the string, so no need to be verbose. */ |
| return "?"; |
| return signals[sig].name; |
| } |
| |
| /* Given a name, return its signal. */ |
| enum target_signal |
| target_signal_from_name (char *name) |
| { |
| enum target_signal sig; |
| |
| /* It's possible we also should allow "SIGCLD" as well as "SIGCHLD" |
| for TARGET_SIGNAL_SIGCHLD. SIGIOT, on the other hand, is more |
| questionable; seems like by now people should call it SIGABRT |
| instead. */ |
| |
| /* This ugly cast brought to you by the native VAX compiler. */ |
| for (sig = TARGET_SIGNAL_HUP; |
| signals[sig].name != NULL; |
| sig = (enum target_signal) ((int) sig + 1)) |
| if (STREQ (name, signals[sig].name)) |
| return sig; |
| return TARGET_SIGNAL_UNKNOWN; |
| } |
| |
| /* The following functions are to help certain targets deal |
| with the signal/waitstatus stuff. They could just as well be in |
| a file called native-utils.c or unixwaitstatus-utils.c or whatever. */ |
| |
| /* Convert host signal to our signals. */ |
| enum target_signal |
| target_signal_from_host (int hostsig) |
| { |
| /* A switch statement would make sense but would require special kludges |
| to deal with the cases where more than one signal has the same number. */ |
| |
| if (hostsig == 0) |
| return TARGET_SIGNAL_0; |
| |
| #if defined (SIGHUP) |
| if (hostsig == SIGHUP) |
| return TARGET_SIGNAL_HUP; |
| #endif |
| #if defined (SIGINT) |
| if (hostsig == SIGINT) |
| return TARGET_SIGNAL_INT; |
| #endif |
| #if defined (SIGQUIT) |
| if (hostsig == SIGQUIT) |
| return TARGET_SIGNAL_QUIT; |
| #endif |
| #if defined (SIGILL) |
| if (hostsig == SIGILL) |
| return TARGET_SIGNAL_ILL; |
| #endif |
| #if defined (SIGTRAP) |
| if (hostsig == SIGTRAP) |
| return TARGET_SIGNAL_TRAP; |
| #endif |
| #if defined (SIGABRT) |
| if (hostsig == SIGABRT) |
| return TARGET_SIGNAL_ABRT; |
| #endif |
| #if defined (SIGEMT) |
| if (hostsig == SIGEMT) |
| return TARGET_SIGNAL_EMT; |
| #endif |
| #if defined (SIGFPE) |
| if (hostsig == SIGFPE) |
| return TARGET_SIGNAL_FPE; |
| #endif |
| #if defined (SIGKILL) |
| if (hostsig == SIGKILL) |
| return TARGET_SIGNAL_KILL; |
| #endif |
| #if defined (SIGBUS) |
| if (hostsig == SIGBUS) |
| return TARGET_SIGNAL_BUS; |
| #endif |
| #if defined (SIGSEGV) |
| if (hostsig == SIGSEGV) |
| return TARGET_SIGNAL_SEGV; |
| #endif |
| #if defined (SIGSYS) |
| if (hostsig == SIGSYS) |
| return TARGET_SIGNAL_SYS; |
| #endif |
| #if defined (SIGPIPE) |
| if (hostsig == SIGPIPE) |
| return TARGET_SIGNAL_PIPE; |
| #endif |
| #if defined (SIGALRM) |
| if (hostsig == SIGALRM) |
| return TARGET_SIGNAL_ALRM; |
| #endif |
| #if defined (SIGTERM) |
| if (hostsig == SIGTERM) |
| return TARGET_SIGNAL_TERM; |
| #endif |
| #if defined (SIGUSR1) |
| if (hostsig == SIGUSR1) |
| return TARGET_SIGNAL_USR1; |
| #endif |
| #if defined (SIGUSR2) |
| if (hostsig == SIGUSR2) |
| return TARGET_SIGNAL_USR2; |
| #endif |
| #if defined (SIGCLD) |
| if (hostsig == SIGCLD) |
| return TARGET_SIGNAL_CHLD; |
| #endif |
| #if defined (SIGCHLD) |
| if (hostsig == SIGCHLD) |
| return TARGET_SIGNAL_CHLD; |
| #endif |
| #if defined (SIGPWR) |
| if (hostsig == SIGPWR) |
| return TARGET_SIGNAL_PWR; |
| #endif |
| #if defined (SIGWINCH) |
| if (hostsig == SIGWINCH) |
| return TARGET_SIGNAL_WINCH; |
| #endif |
| #if defined (SIGURG) |
| if (hostsig == SIGURG) |
| return TARGET_SIGNAL_URG; |
| #endif |
| #if defined (SIGIO) |
| if (hostsig == SIGIO) |
| return TARGET_SIGNAL_IO; |
| #endif |
| #if defined (SIGPOLL) |
| if (hostsig == SIGPOLL) |
| return TARGET_SIGNAL_POLL; |
| #endif |
| #if defined (SIGSTOP) |
| if (hostsig == SIGSTOP) |
| return TARGET_SIGNAL_STOP; |
| #endif |
| #if defined (SIGTSTP) |
| if (hostsig == SIGTSTP) |
| return TARGET_SIGNAL_TSTP; |
| #endif |
| #if defined (SIGCONT) |
| if (hostsig == SIGCONT) |
| return TARGET_SIGNAL_CONT; |
| #endif |
| #if defined (SIGTTIN) |
| if (hostsig == SIGTTIN) |
| return TARGET_SIGNAL_TTIN; |
| #endif |
| #if defined (SIGTTOU) |
| if (hostsig == SIGTTOU) |
| return TARGET_SIGNAL_TTOU; |
| #endif |
| #if defined (SIGVTALRM) |
| if (hostsig == SIGVTALRM) |
| return TARGET_SIGNAL_VTALRM; |
| #endif |
| #if defined (SIGPROF) |
| if (hostsig == SIGPROF) |
| return TARGET_SIGNAL_PROF; |
| #endif |
| #if defined (SIGXCPU) |
| if (hostsig == SIGXCPU) |
| return TARGET_SIGNAL_XCPU; |
| #endif |
| #if defined (SIGXFSZ) |
| if (hostsig == SIGXFSZ) |
| return TARGET_SIGNAL_XFSZ; |
| #endif |
| #if defined (SIGWIND) |
| if (hostsig == SIGWIND) |
| return TARGET_SIGNAL_WIND; |
| #endif |
| #if defined (SIGPHONE) |
| if (hostsig == SIGPHONE) |
| return TARGET_SIGNAL_PHONE; |
| #endif |
| #if defined (SIGLOST) |
| if (hostsig == SIGLOST) |
| return TARGET_SIGNAL_LOST; |
| #endif |
| #if defined (SIGWAITING) |
| if (hostsig == SIGWAITING) |
| return TARGET_SIGNAL_WAITING; |
| #endif |
| #if defined (SIGCANCEL) |
| if (hostsig == SIGCANCEL) |
| return TARGET_SIGNAL_CANCEL; |
| #endif |
| #if defined (SIGLWP) |
| if (hostsig == SIGLWP) |
| return TARGET_SIGNAL_LWP; |
| #endif |
| #if defined (SIGDANGER) |
| if (hostsig == SIGDANGER) |
| return TARGET_SIGNAL_DANGER; |
| #endif |
| #if defined (SIGGRANT) |
| if (hostsig == SIGGRANT) |
| return TARGET_SIGNAL_GRANT; |
| #endif |
| #if defined (SIGRETRACT) |
| if (hostsig == SIGRETRACT) |
| return TARGET_SIGNAL_RETRACT; |
| #endif |
| #if defined (SIGMSG) |
| if (hostsig == SIGMSG) |
| return TARGET_SIGNAL_MSG; |
| #endif |
| #if defined (SIGSOUND) |
| if (hostsig == SIGSOUND) |
| return TARGET_SIGNAL_SOUND; |
| #endif |
| #if defined (SIGSAK) |
| if (hostsig == SIGSAK) |
| return TARGET_SIGNAL_SAK; |
| #endif |
| #if defined (SIGPRIO) |
| if (hostsig == SIGPRIO) |
| return TARGET_SIGNAL_PRIO; |
| #endif |
| |
| /* Mach exceptions. Assumes that the values for EXC_ are positive! */ |
| #if defined (EXC_BAD_ACCESS) && defined (_NSIG) |
| if (hostsig == _NSIG + EXC_BAD_ACCESS) |
| return TARGET_EXC_BAD_ACCESS; |
| #endif |
| #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG) |
| if (hostsig == _NSIG + EXC_BAD_INSTRUCTION) |
| return TARGET_EXC_BAD_INSTRUCTION; |
| #endif |
| #if defined (EXC_ARITHMETIC) && defined (_NSIG) |
| if (hostsig == _NSIG + EXC_ARITHMETIC) |
| return TARGET_EXC_ARITHMETIC; |
| #endif |
| #if defined (EXC_EMULATION) && defined (_NSIG) |
| if (hostsig == _NSIG + EXC_EMULATION) |
| return TARGET_EXC_EMULATION; |
| #endif |
| #if defined (EXC_SOFTWARE) && defined (_NSIG) |
| if (hostsig == _NSIG + EXC_SOFTWARE) |
| return TARGET_EXC_SOFTWARE; |
| #endif |
| #if defined (EXC_BREAKPOINT) && defined (_NSIG) |
| if (hostsig == _NSIG + EXC_BREAKPOINT) |
| return TARGET_EXC_BREAKPOINT; |
| #endif |
| |
| #if defined (SIGINFO) |
| if (hostsig == SIGINFO) |
| return TARGET_SIGNAL_INFO; |
| #endif |
| |
| #if defined (REALTIME_LO) |
| if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI) |
| { |
| /* This block of TARGET_SIGNAL_REALTIME value is in order. */ |
| if (33 <= hostsig && hostsig <= 63) |
| return (enum target_signal) |
| (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33); |
| else if (hostsig == 32) |
| return TARGET_SIGNAL_REALTIME_32; |
| else |
| error ("GDB bug: target.c (target_signal_from_host): unrecognized real-time signal"); |
| } |
| #endif |
| |
| #if defined (SIGRTMIN) |
| if (hostsig >= SIGRTMIN && hostsig <= SIGRTMAX) |
| { |
| /* This block of TARGET_SIGNAL_REALTIME value is in order. */ |
| if (33 <= hostsig && hostsig <= 63) |
| return (enum target_signal) |
| (hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33); |
| else if (hostsig == 64) |
| return TARGET_SIGNAL_REALTIME_64; |
| else |
| error ("GDB bug: target.c (target_signal_from_host): unrecognized real-time signal"); |
| } |
| #endif |
| return TARGET_SIGNAL_UNKNOWN; |
| } |
| |
| /* Convert a OURSIG (an enum target_signal) to the form used by the |
| target operating system (refered to as the ``host'') or zero if the |
| equivalent host signal is not available. Set/clear OURSIG_OK |
| accordingly. */ |
| |
| static int |
| do_target_signal_to_host (enum target_signal oursig, |
| int *oursig_ok) |
| { |
| *oursig_ok = 1; |
| switch (oursig) |
| { |
| case TARGET_SIGNAL_0: |
| return 0; |
| |
| #if defined (SIGHUP) |
| case TARGET_SIGNAL_HUP: |
| return SIGHUP; |
| #endif |
| #if defined (SIGINT) |
| case TARGET_SIGNAL_INT: |
| return SIGINT; |
| #endif |
| #if defined (SIGQUIT) |
| case TARGET_SIGNAL_QUIT: |
| return SIGQUIT; |
| #endif |
| #if defined (SIGILL) |
| case TARGET_SIGNAL_ILL: |
| return SIGILL; |
| #endif |
| #if defined (SIGTRAP) |
| case TARGET_SIGNAL_TRAP: |
| return SIGTRAP; |
| #endif |
| #if defined (SIGABRT) |
| case TARGET_SIGNAL_ABRT: |
| return SIGABRT; |
| #endif |
| #if defined (SIGEMT) |
| case TARGET_SIGNAL_EMT: |
| return SIGEMT; |
| #endif |
| #if defined (SIGFPE) |
| case TARGET_SIGNAL_FPE: |
| return SIGFPE; |
| #endif |
| #if defined (SIGKILL) |
| case TARGET_SIGNAL_KILL: |
| return SIGKILL; |
| #endif |
| #if defined (SIGBUS) |
| case TARGET_SIGNAL_BUS: |
| return SIGBUS; |
| #endif |
| #if defined (SIGSEGV) |
| case TARGET_SIGNAL_SEGV: |
| return SIGSEGV; |
| #endif |
| #if defined (SIGSYS) |
| case TARGET_SIGNAL_SYS: |
| return SIGSYS; |
| #endif |
| #if defined (SIGPIPE) |
| case TARGET_SIGNAL_PIPE: |
| return SIGPIPE; |
| #endif |
| #if defined (SIGALRM) |
| case TARGET_SIGNAL_ALRM: |
| return SIGALRM; |
| #endif |
| #if defined (SIGTERM) |
| case TARGET_SIGNAL_TERM: |
| return SIGTERM; |
| #endif |
| #if defined (SIGUSR1) |
| case TARGET_SIGNAL_USR1: |
| return SIGUSR1; |
| #endif |
| #if defined (SIGUSR2) |
| case TARGET_SIGNAL_USR2: |
| return SIGUSR2; |
| #endif |
| #if defined (SIGCHLD) || defined (SIGCLD) |
| case TARGET_SIGNAL_CHLD: |
| #if defined (SIGCHLD) |
| return SIGCHLD; |
| #else |
| return SIGCLD; |
| #endif |
| #endif /* SIGCLD or SIGCHLD */ |
| #if defined (SIGPWR) |
| case TARGET_SIGNAL_PWR: |
| return SIGPWR; |
| #endif |
| #if defined (SIGWINCH) |
| case TARGET_SIGNAL_WINCH: |
| return SIGWINCH; |
| #endif |
| #if defined (SIGURG) |
| case TARGET_SIGNAL_URG: |
| return SIGURG; |
| #endif |
| #if defined (SIGIO) |
| case TARGET_SIGNAL_IO: |
| return SIGIO; |
| #endif |
| #if defined (SIGPOLL) |
| case TARGET_SIGNAL_POLL: |
| return SIGPOLL; |
| #endif |
| #if defined (SIGSTOP) |
| case TARGET_SIGNAL_STOP: |
| return SIGSTOP; |
| #endif |
| #if defined (SIGTSTP) |
| case TARGET_SIGNAL_TSTP: |
| return SIGTSTP; |
| #endif |
| #if defined (SIGCONT) |
| case TARGET_SIGNAL_CONT: |
| return SIGCONT; |
| #endif |
| #if defined (SIGTTIN) |
| case TARGET_SIGNAL_TTIN: |
| return SIGTTIN; |
| #endif |
| #if defined (SIGTTOU) |
| case TARGET_SIGNAL_TTOU: |
| return SIGTTOU; |
| #endif |
| #if defined (SIGVTALRM) |
| case TARGET_SIGNAL_VTALRM: |
| return SIGVTALRM; |
| #endif |
| #if defined (SIGPROF) |
| case TARGET_SIGNAL_PROF: |
| return SIGPROF; |
| #endif |
| #if defined (SIGXCPU) |
| case TARGET_SIGNAL_XCPU: |
| return SIGXCPU; |
| #endif |
| #if defined (SIGXFSZ) |
| case TARGET_SIGNAL_XFSZ: |
| return SIGXFSZ; |
| #endif |
| #if defined (SIGWIND) |
| case TARGET_SIGNAL_WIND: |
| return SIGWIND; |
| #endif |
| #if defined (SIGPHONE) |
| case TARGET_SIGNAL_PHONE: |
| return SIGPHONE; |
| #endif |
| #if defined (SIGLOST) |
| case TARGET_SIGNAL_LOST: |
| return SIGLOST; |
| #endif |
| #if defined (SIGWAITING) |
| case TARGET_SIGNAL_WAITING: |
| return SIGWAITING; |
| #endif |
| #if defined (SIGCANCEL) |
| case TARGET_SIGNAL_CANCEL: |
| return SIGCANCEL; |
| #endif |
| #if defined (SIGLWP) |
| case TARGET_SIGNAL_LWP: |
| return SIGLWP; |
| #endif |
| #if defined (SIGDANGER) |
| case TARGET_SIGNAL_DANGER: |
| return SIGDANGER; |
| #endif |
| #if defined (SIGGRANT) |
| case TARGET_SIGNAL_GRANT: |
| return SIGGRANT; |
| #endif |
| #if defined (SIGRETRACT) |
| case TARGET_SIGNAL_RETRACT: |
| return SIGRETRACT; |
| #endif |
| #if defined (SIGMSG) |
| case TARGET_SIGNAL_MSG: |
| return SIGMSG; |
| #endif |
| #if defined (SIGSOUND) |
| case TARGET_SIGNAL_SOUND: |
| return SIGSOUND; |
| #endif |
| #if defined (SIGSAK) |
| case TARGET_SIGNAL_SAK: |
| return SIGSAK; |
| #endif |
| #if defined (SIGPRIO) |
| case TARGET_SIGNAL_PRIO: |
| return SIGPRIO; |
| #endif |
| |
| /* Mach exceptions. Assumes that the values for EXC_ are positive! */ |
| #if defined (EXC_BAD_ACCESS) && defined (_NSIG) |
| case TARGET_EXC_BAD_ACCESS: |
| return _NSIG + EXC_BAD_ACCESS; |
| #endif |
| #if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG) |
| case TARGET_EXC_BAD_INSTRUCTION: |
| return _NSIG + EXC_BAD_INSTRUCTION; |
| #endif |
| #if defined (EXC_ARITHMETIC) && defined (_NSIG) |
| case TARGET_EXC_ARITHMETIC: |
| return _NSIG + EXC_ARITHMETIC; |
| #endif |
| #if defined (EXC_EMULATION) && defined (_NSIG) |
| case TARGET_EXC_EMULATION: |
| return _NSIG + EXC_EMULATION; |
| #endif |
| #if defined (EXC_SOFTWARE) && defined (_NSIG) |
| case TARGET_EXC_SOFTWARE: |
| return _NSIG + EXC_SOFTWARE; |
| #endif |
| #if defined (EXC_BREAKPOINT) && defined (_NSIG) |
| case TARGET_EXC_BREAKPOINT: |
| return _NSIG + EXC_BREAKPOINT; |
| #endif |
| |
| #if defined (SIGINFO) |
| case TARGET_SIGNAL_INFO: |
| return SIGINFO; |
| #endif |
| |
| default: |
| #if defined (REALTIME_LO) |
| if (oursig >= TARGET_SIGNAL_REALTIME_33 |
| && oursig <= TARGET_SIGNAL_REALTIME_63) |
| { |
| /* This block of signals is continuous, and |
| TARGET_SIGNAL_REALTIME_33 is 33 by definition. */ |
| int retsig = |
| (int) oursig - (int) TARGET_SIGNAL_REALTIME_33 + 33; |
| if (retsig >= REALTIME_LO && retsig < REALTIME_HI) |
| return retsig; |
| } |
| #if (REALTIME_LO < 33) |
| else if (oursig == TARGET_SIGNAL_REALTIME_32) |
| { |
| /* TARGET_SIGNAL_REALTIME_32 isn't contiguous with |
| TARGET_SIGNAL_REALTIME_33. It is 32 by definition. */ |
| return 32; |
| } |
| #endif |
| #endif |
| |
| #if defined (SIGRTMIN) |
| if (oursig >= TARGET_SIGNAL_REALTIME_33 |
| && oursig <= TARGET_SIGNAL_REALTIME_63) |
| { |
| /* This block of signals is continuous, and |
| TARGET_SIGNAL_REALTIME_33 is 33 by definition. */ |
| int retsig = |
| (int) oursig - (int) TARGET_SIGNAL_REALTIME_33 + 33; |
| if (retsig >= SIGRTMIN && retsig <= SIGRTMAX) |
| return retsig; |
| } |
| else if (oursig == TARGET_SIGNAL_REALTIME_64) |
| return 64; |
| #endif |
| *oursig_ok = 0; |
| return 0; |
| } |
| } |
| |
| int |
| target_signal_to_host_p (enum target_signal oursig) |
| { |
| int oursig_ok; |
| do_target_signal_to_host (oursig, &oursig_ok); |
| return oursig_ok; |
| } |
| |
| int |
| target_signal_to_host (enum target_signal oursig) |
| { |
| int oursig_ok; |
| int targ_signo = do_target_signal_to_host (oursig, &oursig_ok); |
| if (!oursig_ok) |
| { |
| /* The user might be trying to do "signal SIGSAK" where this system |
| doesn't have SIGSAK. */ |
| warning ("Signal %s does not exist on this system.\n", |
| target_signal_to_name (oursig)); |
| return 0; |
| } |
| else |
| return targ_signo; |
| } |
| |
| /* 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)); |
| } |
| } |
| |
| /* In some circumstances we allow a command to specify a numeric |
| signal. The idea is to keep these circumstances limited so that |
| users (and scripts) develop portable habits. For comparison, |
| POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a |
| numeric signal at all is obsolescent. We are slightly more |
| lenient and allow 1-15 which should match host signal numbers on |
| most systems. Use of symbolic signal names is strongly encouraged. */ |
| |
| enum target_signal |
| target_signal_from_command (int num) |
| { |
| if (num >= 1 && num <= 15) |
| return (enum target_signal) num; |
| error ("Only signals 1-15 are valid as numeric signals.\n\ |
| Use \"info signals\" for a list of symbolic signals."); |
| } |
| |
| /* 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 (int pid) |
| { |
| static char buf[30]; |
| |
| if (STREQ (current_target.to_shortname, "remote")) |
| sprintf (buf, "thread %d", pid); |
| else |
| sprintf (buf, "process %d", pid); |
| |
| return buf; |
| } |
| |
| /* Some targets (such as ttrace-based HPUX) don't allow us to request |
| notification of inferior events such as fork and vork immediately |
| after the inferior is created. (This because of how gdb gets an |
| inferior created via invoking a shell to do it. In such a scenario, |
| if the shell init file has commands in it, the shell will fork and |
| exec for each of those commands, and we will see each such fork |
| event. Very bad.) |
| |
| This function is used by all targets that allow us to request |
| notification of forks, etc at inferior creation time; e.g., in |
| target_acknowledge_forked_child. |
| */ |
| static void |
| normal_target_post_startup_inferior (int pid) |
| { |
| /* This space intentionally left blank. */ |
| } |
| |
| /* 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_require_attach = find_default_require_attach; |
| dummy_target.to_require_detach = find_default_require_detach; |
| dummy_target.to_create_inferior = find_default_create_inferior; |
| dummy_target.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior; |
| dummy_target.to_pid_to_str = normal_pid_to_str; |
| dummy_target.to_stratum = dummy_stratum; |
| dummy_target.to_magic = OPS_MAGIC; |
| } |
| |
| |
| static struct target_ops debug_target; |
| |
| 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) |
| { |
| debug_target.to_close (quitting); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", 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_require_attach (char *args, int from_tty) |
| { |
| debug_target.to_require_attach (args, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_require_attach (%s, %d)\n", args, from_tty); |
| } |
| |
| 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_require_detach (int pid, char *args, int from_tty) |
| { |
| debug_target.to_require_detach (pid, args, from_tty); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_require_detach (%d, %s, %d)\n", pid, args, from_tty); |
| } |
| |
| static void |
| debug_to_resume (int pid, int step, enum target_signal siggnal) |
| { |
| debug_target.to_resume (pid, step, siggnal); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", pid, |
| step ? "step" : "continue", |
| target_signal_to_name (siggnal)); |
| } |
| |
| static int |
| debug_to_wait (int pid, struct target_waitstatus *status) |
| { |
| int retval; |
| |
| retval = debug_target.to_wait (pid, status); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_wait (%d, status) = %d, ", pid, 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_to_post_wait (int pid, int status) |
| { |
| debug_target.to_post_wait (pid, status); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_post_wait (%d, %d)\n", |
| pid, status); |
| } |
| |
| static void |
| debug_to_fetch_registers (int regno) |
| { |
| debug_target.to_fetch_registers (regno); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_fetch_registers (%s)", |
| regno != -1 ? REGISTER_NAME (regno) : "-1"); |
| if (regno != -1) |
| fprintf_unfiltered (gdb_stdlog, " = 0x%lx %ld", |
| (unsigned long) read_register (regno), |
| (unsigned long) read_register (regno)); |
| fprintf_unfiltered (gdb_stdlog, "\n"); |
| } |
| |
| static void |
| debug_to_store_registers (int regno) |
| { |
| debug_target.to_store_registers (regno); |
| |
| if (regno >= 0 && regno < NUM_REGS) |
| fprintf_unfiltered (gdb_stdlog, "target_store_registers (%s) = 0x%lx %ld\n", |
| REGISTER_NAME (regno), |
| (unsigned long) read_register (regno), |
| (unsigned long) read_register (regno)); |
| else |
| fprintf_unfiltered (gdb_stdlog, "target_store_registers (%d)\n", regno); |
| } |
| |
| 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 |
| debug_to_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
| struct mem_attrib *attrib, |
| struct target_ops *target) |
| { |
| int retval; |
| |
| retval = debug_target.to_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) |
| 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, char *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, char *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 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_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) |
| { |
| debug_target.to_create_inferior (exec_file, args, env); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_create_inferior (%s, %s, xxx)\n", |
| exec_file, args); |
| } |
| |
| static void |
| debug_to_post_startup_inferior (int pid) |
| { |
| debug_target.to_post_startup_inferior (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
| pid); |
| } |
| |
| 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_clone_and_follow_inferior (int child_pid, int *followed_child) |
| { |
| debug_target.to_clone_and_follow_inferior (child_pid, followed_child); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_clone_and_follow_inferior (%d, %d)\n", |
| child_pid, *followed_child); |
| } |
| |
| static void |
| debug_to_post_follow_inferior_by_clone (void) |
| { |
| debug_target.to_post_follow_inferior_by_clone (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_post_follow_inferior_by_clone ()\n"); |
| } |
| |
| static int |
| debug_to_insert_fork_catchpoint (int pid) |
| { |
| int retval; |
| |
| retval = debug_target.to_insert_fork_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d) = %d\n", |
| pid, retval); |
| |
| return retval; |
| } |
| |
| 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 int |
| debug_to_insert_vfork_catchpoint (int pid) |
| { |
| int retval; |
| |
| retval = debug_target.to_insert_vfork_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)= %d\n", |
| pid, retval); |
| |
| return retval; |
| } |
| |
| 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_has_forked (int pid, int *child_pid) |
| { |
| int has_forked; |
| |
| has_forked = debug_target.to_has_forked (pid, child_pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_has_forked (%d, %d) = %d\n", |
| pid, *child_pid, has_forked); |
| |
| return has_forked; |
| } |
| |
| static int |
| debug_to_has_vforked (int pid, int *child_pid) |
| { |
| int has_vforked; |
| |
| has_vforked = debug_target.to_has_vforked (pid, child_pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_has_vforked (%d, %d) = %d\n", |
| pid, *child_pid, has_vforked); |
| |
| return has_vforked; |
| } |
| |
| static int |
| debug_to_can_follow_vfork_prior_to_exec (void) |
| { |
| int can_immediately_follow_vfork; |
| |
| can_immediately_follow_vfork = debug_target.to_can_follow_vfork_prior_to_exec (); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_can_follow_vfork_prior_to_exec () = %d\n", |
| can_immediately_follow_vfork); |
| |
| return can_immediately_follow_vfork; |
| } |
| |
| static void |
| debug_to_post_follow_vfork (int parent_pid, int followed_parent, int child_pid, |
| int followed_child) |
| { |
| debug_target.to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child); |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_post_follow_vfork (%d, %d, %d, %d)\n", |
| parent_pid, followed_parent, child_pid, followed_child); |
| } |
| |
| static int |
| debug_to_insert_exec_catchpoint (int pid) |
| { |
| int retval; |
| |
| retval = debug_target.to_insert_exec_catchpoint (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d) = %d\n", |
| pid, retval); |
| |
| return retval; |
| } |
| |
| 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_has_execd (int pid, char **execd_pathname) |
| { |
| int has_execd; |
| |
| has_execd = debug_target.to_has_execd (pid, execd_pathname); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_has_execd (%d, %s) = %d\n", |
| pid, (*execd_pathname ? *execd_pathname : "<NULL>"), |
| has_execd); |
| |
| return has_execd; |
| } |
| |
| 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_syscall_event (int pid, enum target_waitkind *kind, |
| int *syscall_id) |
| { |
| int has_syscall_event; |
| char *kind_spelling = "??"; |
| |
| has_syscall_event = debug_target.to_has_syscall_event (pid, kind, syscall_id); |
| if (has_syscall_event) |
| { |
| switch (*kind) |
| { |
| case TARGET_WAITKIND_SYSCALL_ENTRY: |
| kind_spelling = "SYSCALL_ENTRY"; |
| break; |
| case TARGET_WAITKIND_SYSCALL_RETURN: |
| kind_spelling = "SYSCALL_RETURN"; |
| break; |
| default: |
| break; |
| } |
| } |
| |
| fprintf_unfiltered (gdb_stdlog, |
| "target_has_syscall_event (%d, %s, %d) = %d\n", |
| pid, kind_spelling, *syscall_id, has_syscall_event); |
| |
| return has_syscall_event; |
| } |
| |
| 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 (int pid) |
| { |
| debug_target.to_notice_signals (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", pid); |
| } |
| |
| static int |
| debug_to_thread_alive (int pid) |
| { |
| int retval; |
| |
| retval = debug_target.to_thread_alive (pid); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", |
| pid, 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 int |
| debug_to_query (int type, char *req, char *resp, int *siz) |
| { |
| int retval; |
| |
| retval = debug_target.to_query (type, req, resp, siz); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_query (%c, %s, %s, %d) = %d\n", type, req, resp, *siz, retval); |
| |
| return retval; |
| } |
| |
| 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 char * |
| debug_to_core_file_to_sym_file (char *core) |
| { |
| char *sym_file; |
| |
| sym_file = debug_target.to_core_file_to_sym_file (core); |
| |
| fprintf_unfiltered (gdb_stdlog, "target_core_file_to_sym_file (%s) = %s\n", |
| core, sym_file); |
| |
| return sym_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_require_attach = debug_to_require_attach; |
| current_target.to_detach = debug_to_detach; |
| current_target.to_require_detach = debug_to_require_detach; |
| current_target.to_resume = debug_to_resume; |
| current_target.to_wait = debug_to_wait; |
| current_target.to_post_wait = debug_to_post_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.to_xfer_memory = debug_to_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_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_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_clone_and_follow_inferior = debug_to_clone_and_follow_inferior; |
| current_target.to_post_follow_inferior_by_clone = debug_to_post_follow_inferior_by_clone; |
| 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_has_forked = debug_to_has_forked; |
| current_target.to_has_vforked = debug_to_has_vforked; |
| current_target.to_can_follow_vfork_prior_to_exec = debug_to_can_follow_vfork_prior_to_exec; |
| current_target.to_post_follow_vfork = debug_to_post_follow_vfork; |
| 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_has_execd = debug_to_has_execd; |
| current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call; |
| current_target.to_has_syscall_event = debug_to_has_syscall_event; |
| 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_query = debug_to_query; |
| 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; |
| current_target.to_core_file_to_sym_file = debug_to_core_file_to_sym_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.\n"); |
| } |
| 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_show_from_set ( |
| add_set_cmd ("target", class_maintenance, var_zinteger, |
| (char *) &targetdebug, |
| "Set target debugging.\n\ |
| When non-zero, target debugging is enabled.", &setdebuglist), |
| &showdebuglist); |
| |
| |
| add_com ("monitor", class_obscure, do_monitor_command, |
| "Send a command to the remote monitor (remote targets only)."); |
| |
| target_dcache = dcache_init(); |
| |
| if (!STREQ (signals[TARGET_SIGNAL_LAST].string, "TARGET_SIGNAL_MAGIC")) |
| internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
| } |