mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-29 23:10:26 +00:00
fc1a4b4705
Use gdb_byte in preference to bfd_byte. * gdbarch.sh: Update. * gdbarch.h, gdbarch.c: Re-generate. * ada-lang.c, ada-lang.h, ada-valprint.c, arch-utils.c: Update. * c-lang.c, c-lang.h, c-valprint.c, cp-valprint.c: Update. * f-lang.c, f-lang.h, f-valprint.c, gdbcore.h, jv-lang.h: Update. * jv-valprint.c, language.c, language.h, m2-lang.c: Update. * m2-lang.h, m2-valprint.c, objc-lang.c, p-lang.c: Update. * p-lang.h, p-valprint.c, regcache.c, scm-lang.c: Update. * scm-lang.h, scm-valprint.c, target.c, target.h: Update. * tramp-frame.c, valarith.c, valops.c, valprint.c: Update. * valprint.h, value.c, value.h: Update.
2620 lines
67 KiB
C
2620 lines
67 KiB
C
/* Select target systems and architectures at runtime for GDB.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include <errno.h>
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#include "gdb_string.h"
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#include "target.h"
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#include "gdbcmd.h"
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#include "symtab.h"
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#include "inferior.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "gdb_wait.h"
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#include "dcache.h"
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#include <signal.h>
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#include "regcache.h"
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#include "gdb_assert.h"
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#include "gdbcore.h"
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static void target_info (char *, int);
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static void maybe_kill_then_attach (char *, int);
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static void kill_or_be_killed (int);
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static void default_terminal_info (char *, int);
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static int default_region_size_ok_for_hw_watchpoint (int);
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static int nosymbol (char *, CORE_ADDR *);
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static void tcomplain (void);
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static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *);
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static int return_zero (void);
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static int return_one (void);
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static int return_minus_one (void);
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void target_ignore (void);
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static void target_command (char *, int);
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static struct target_ops *find_default_run_target (char *);
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static void nosupport_runtime (void);
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static LONGEST default_xfer_partial (struct target_ops *ops,
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enum target_object object,
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const char *annex, void *readbuf,
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const void *writebuf,
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ULONGEST offset, LONGEST len);
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/* Transfer LEN bytes between target address MEMADDR and GDB address
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MYADDR. Returns 0 for success, errno code for failure (which
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includes partial transfers -- if you want a more useful response to
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partial transfers, try either target_read_memory_partial or
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target_write_memory_partial). */
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static int target_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
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int write);
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static void init_dummy_target (void);
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static struct target_ops debug_target;
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static void debug_to_open (char *, int);
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static void debug_to_close (int);
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static void debug_to_attach (char *, int);
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static void debug_to_detach (char *, int);
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static void debug_to_disconnect (char *, int);
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static void debug_to_resume (ptid_t, int, enum target_signal);
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static ptid_t debug_to_wait (ptid_t, struct target_waitstatus *);
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static void debug_to_fetch_registers (int);
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static void debug_to_store_registers (int);
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static void debug_to_prepare_to_store (void);
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static int deprecated_debug_xfer_memory (CORE_ADDR, char *, int, int,
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struct mem_attrib *,
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struct target_ops *);
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static void debug_to_files_info (struct target_ops *);
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static int debug_to_insert_breakpoint (CORE_ADDR, gdb_byte *);
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static int debug_to_remove_breakpoint (CORE_ADDR, gdb_byte *);
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static int debug_to_can_use_hw_breakpoint (int, int, int);
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static int debug_to_insert_hw_breakpoint (CORE_ADDR, char *);
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static int debug_to_remove_hw_breakpoint (CORE_ADDR, char *);
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static int debug_to_insert_watchpoint (CORE_ADDR, int, int);
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static int debug_to_remove_watchpoint (CORE_ADDR, int, int);
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static int debug_to_stopped_by_watchpoint (void);
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static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *);
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static int debug_to_region_size_ok_for_hw_watchpoint (int);
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static void debug_to_terminal_init (void);
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static void debug_to_terminal_inferior (void);
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static void debug_to_terminal_ours_for_output (void);
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static void debug_to_terminal_save_ours (void);
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static void debug_to_terminal_ours (void);
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static void debug_to_terminal_info (char *, int);
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static void debug_to_kill (void);
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static void debug_to_load (char *, int);
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static int debug_to_lookup_symbol (char *, CORE_ADDR *);
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static void debug_to_mourn_inferior (void);
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static int debug_to_can_run (void);
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static void debug_to_notice_signals (ptid_t);
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static int debug_to_thread_alive (ptid_t);
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static void debug_to_stop (void);
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/* NOTE: cagney/2004-09-29: Many targets reference this variable in
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wierd and mysterious ways. Putting the variable here lets those
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wierd and mysterious ways keep building while they are being
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converted to the inferior inheritance structure. */
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struct target_ops deprecated_child_ops;
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/* Pointer to array of target architecture structures; the size of the
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array; the current index into the array; the allocated size of the
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array. */
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struct target_ops **target_structs;
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unsigned target_struct_size;
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unsigned target_struct_index;
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unsigned target_struct_allocsize;
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#define DEFAULT_ALLOCSIZE 10
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/* The initial current target, so that there is always a semi-valid
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current target. */
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static struct target_ops dummy_target;
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/* Top of target stack. */
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static struct target_ops *target_stack;
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/* The target structure we are currently using to talk to a process
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or file or whatever "inferior" we have. */
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struct target_ops current_target;
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/* Command list for target. */
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static struct cmd_list_element *targetlist = NULL;
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/* Nonzero if we are debugging an attached outside process
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rather than an inferior. */
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int attach_flag;
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/* Non-zero if we want to see trace of target level stuff. */
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static int targetdebug = 0;
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static void
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show_targetdebug (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Target debugging is %s.\n"), value);
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}
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static void setup_target_debug (void);
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DCACHE *target_dcache;
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/* The user just typed 'target' without the name of a target. */
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static void
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target_command (char *arg, int from_tty)
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{
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fputs_filtered ("Argument required (target name). Try `help target'\n",
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gdb_stdout);
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}
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/* Add a possible target architecture to the list. */
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void
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add_target (struct target_ops *t)
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{
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/* Provide default values for all "must have" methods. */
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if (t->to_xfer_partial == NULL)
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t->to_xfer_partial = default_xfer_partial;
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if (!target_structs)
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{
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target_struct_allocsize = DEFAULT_ALLOCSIZE;
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target_structs = (struct target_ops **) xmalloc
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(target_struct_allocsize * sizeof (*target_structs));
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}
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if (target_struct_size >= target_struct_allocsize)
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{
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target_struct_allocsize *= 2;
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target_structs = (struct target_ops **)
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xrealloc ((char *) target_structs,
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target_struct_allocsize * sizeof (*target_structs));
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}
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target_structs[target_struct_size++] = t;
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if (targetlist == NULL)
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add_prefix_cmd ("target", class_run, target_command, _("\
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Connect to a target machine or process.\n\
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The first argument is the type or protocol of the target machine.\n\
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Remaining arguments are interpreted by the target protocol. For more\n\
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information on the arguments for a particular protocol, type\n\
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`help target ' followed by the protocol name."),
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&targetlist, "target ", 0, &cmdlist);
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add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
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}
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/* Stub functions */
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void
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target_ignore (void)
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{
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}
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void
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target_load (char *arg, int from_tty)
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{
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dcache_invalidate (target_dcache);
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(*current_target.to_load) (arg, from_tty);
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}
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static int
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nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write,
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struct target_ops *t)
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{
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errno = EIO; /* Can't read/write this location */
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return 0; /* No bytes handled */
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}
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static void
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tcomplain (void)
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{
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error (_("You can't do that when your target is `%s'"),
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current_target.to_shortname);
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}
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void
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noprocess (void)
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{
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error (_("You can't do that without a process to debug."));
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}
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static int
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nosymbol (char *name, CORE_ADDR *addrp)
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{
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return 1; /* Symbol does not exist in target env */
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}
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static void
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nosupport_runtime (void)
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{
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if (ptid_equal (inferior_ptid, null_ptid))
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noprocess ();
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else
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error (_("No run-time support for this"));
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}
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static void
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default_terminal_info (char *args, int from_tty)
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{
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printf_unfiltered (_("No saved terminal information.\n"));
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}
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/* This is the default target_create_inferior and target_attach function.
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If the current target is executing, it asks whether to kill it off.
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If this function returns without calling error(), it has killed off
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the target, and the operation should be attempted. */
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static void
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kill_or_be_killed (int from_tty)
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{
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if (target_has_execution)
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{
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printf_unfiltered (_("You are already running a program:\n"));
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target_files_info ();
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if (query ("Kill it? "))
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{
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target_kill ();
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if (target_has_execution)
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error (_("Killing the program did not help."));
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return;
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}
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else
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{
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error (_("Program not killed."));
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}
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}
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tcomplain ();
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}
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static void
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maybe_kill_then_attach (char *args, int from_tty)
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{
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kill_or_be_killed (from_tty);
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target_attach (args, from_tty);
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}
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static void
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maybe_kill_then_create_inferior (char *exec, char *args, char **env,
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int from_tty)
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{
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kill_or_be_killed (0);
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target_create_inferior (exec, args, env, from_tty);
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}
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/* Go through the target stack from top to bottom, copying over zero
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entries in current_target, then filling in still empty entries. In
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effect, we are doing class inheritance through the pushed target
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vectors.
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NOTE: cagney/2003-10-17: The problem with this inheritance, as it
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is currently implemented, is that it discards any knowledge of
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which target an inherited method originally belonged to.
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Consequently, new new target methods should instead explicitly and
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locally search the target stack for the target that can handle the
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request. */
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static void
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update_current_target (void)
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{
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struct target_ops *t;
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/* First, reset curren'ts contents. */
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memset (¤t_target, 0, sizeof (current_target));
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#define INHERIT(FIELD, TARGET) \
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if (!current_target.FIELD) \
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current_target.FIELD = (TARGET)->FIELD
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for (t = target_stack; t; t = t->beneath)
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{
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INHERIT (to_shortname, t);
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INHERIT (to_longname, t);
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INHERIT (to_doc, t);
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INHERIT (to_open, t);
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INHERIT (to_close, t);
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INHERIT (to_attach, t);
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INHERIT (to_post_attach, t);
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INHERIT (to_detach, t);
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INHERIT (to_disconnect, t);
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INHERIT (to_resume, t);
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INHERIT (to_wait, t);
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INHERIT (to_fetch_registers, t);
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INHERIT (to_store_registers, t);
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INHERIT (to_prepare_to_store, t);
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INHERIT (deprecated_xfer_memory, t);
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INHERIT (to_files_info, t);
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INHERIT (to_insert_breakpoint, t);
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INHERIT (to_remove_breakpoint, t);
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INHERIT (to_can_use_hw_breakpoint, t);
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INHERIT (to_insert_hw_breakpoint, t);
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INHERIT (to_remove_hw_breakpoint, t);
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INHERIT (to_insert_watchpoint, t);
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INHERIT (to_remove_watchpoint, t);
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INHERIT (to_stopped_data_address, t);
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INHERIT (to_stopped_by_watchpoint, t);
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INHERIT (to_have_continuable_watchpoint, t);
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INHERIT (to_region_size_ok_for_hw_watchpoint, t);
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INHERIT (to_terminal_init, t);
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INHERIT (to_terminal_inferior, t);
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INHERIT (to_terminal_ours_for_output, t);
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INHERIT (to_terminal_ours, t);
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INHERIT (to_terminal_save_ours, t);
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INHERIT (to_terminal_info, t);
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INHERIT (to_kill, t);
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INHERIT (to_load, t);
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INHERIT (to_lookup_symbol, t);
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INHERIT (to_create_inferior, t);
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INHERIT (to_post_startup_inferior, t);
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INHERIT (to_acknowledge_created_inferior, t);
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INHERIT (to_insert_fork_catchpoint, t);
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INHERIT (to_remove_fork_catchpoint, t);
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||
INHERIT (to_insert_vfork_catchpoint, t);
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INHERIT (to_remove_vfork_catchpoint, t);
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||
INHERIT (to_follow_fork, t);
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||
INHERIT (to_insert_exec_catchpoint, t);
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||
INHERIT (to_remove_exec_catchpoint, t);
|
||
INHERIT (to_reported_exec_events_per_exec_call, t);
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||
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, 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_can_use_hw_breakpoint,
|
||
(int (*) (int, int, int))
|
||
return_zero);
|
||
de_fault (to_insert_hw_breakpoint,
|
||
(int (*) (CORE_ADDR, char *))
|
||
return_minus_one);
|
||
de_fault (to_remove_hw_breakpoint,
|
||
(int (*) (CORE_ADDR, char *))
|
||
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;
|
||
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_read_memory (memaddr & ~3, buf, 4);
|
||
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;
|
||
}
|
||
|
||
/* 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)
|
||
{
|
||
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
|
||
|
||
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);
|
||
}
|
||
|
||
/* 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;
|
||
|
||
/* Zero length requests are ok and require no work. */
|
||
if (len == 0)
|
||
return 0;
|
||
|
||
/* deprecated_xfer_memory is not guaranteed to set errno, even when
|
||
it returns 0. */
|
||
errno = 0;
|
||
|
||
if (!write && trust_readonly)
|
||
{
|
||
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. */
|
||
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, attrib, ¤t_target);
|
||
}
|
||
|
||
/* 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, 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)
|
||
{
|
||
if (target_xfer_partial_p ())
|
||
{
|
||
int retval;
|
||
|
||
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, void *readbuf,
|
||
const void *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, void *buf,
|
||
ULONGEST offset, LONGEST len)
|
||
{
|
||
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 void *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, void *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 void *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, void *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, char *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, char *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, char *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 ();
|
||
}
|