1859 lines
47 KiB
C
1859 lines
47 KiB
C
/* Select target systems and architectures at runtime for GDB.
|
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Copyright 1990, 1992, 1993, 1994, 1995 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, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include <errno.h>
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#include <ctype.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 "wait.h"
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#include <signal.h>
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extern int errno;
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static void
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target_info PARAMS ((char *, int));
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static void
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cleanup_target PARAMS ((struct target_ops *));
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static void
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maybe_kill_then_create_inferior PARAMS ((char *, char *, char **));
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static void
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maybe_kill_then_attach PARAMS ((char *, int));
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static void
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kill_or_be_killed PARAMS ((int));
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static void
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default_terminal_info PARAMS ((char *, int));
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static int
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nosymbol PARAMS ((char *, CORE_ADDR *));
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static void
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tcomplain PARAMS ((void));
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static int
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nomemory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
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static int
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return_zero PARAMS ((void));
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static void
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ignore PARAMS ((void));
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static void
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target_command PARAMS ((char *, int));
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static struct target_ops *
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find_default_run_target PARAMS ((char *));
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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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struct target_ops dummy_target = {
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"None", /* to_shortname */
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"None", /* to_longname */
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"", /* to_doc */
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0, /* to_open */
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0, /* to_close */
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find_default_attach, /* to_attach */
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0, /* to_detach */
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0, /* to_resume */
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0, /* to_wait */
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0, /* to_fetch_registers */
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0, /* to_store_registers */
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0, /* to_prepare_to_store */
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0, /* to_xfer_memory */
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0, /* to_files_info */
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0, /* to_insert_breakpoint */
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0, /* to_remove_breakpoint */
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0, /* to_terminal_init */
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0, /* to_terminal_inferior */
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0, /* to_terminal_ours_for_output */
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0, /* to_terminal_ours */
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0, /* to_terminal_info */
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0, /* to_kill */
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0, /* to_load */
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0, /* to_lookup_symbol */
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find_default_create_inferior, /* to_create_inferior */
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0, /* to_mourn_inferior */
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0, /* to_can_run */
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0, /* to_notice_signals */
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0, /* to_thread_alive */
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0, /* to_stop */
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dummy_stratum, /* to_stratum */
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0, /* to_next */
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0, /* to_next */
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0, /* to_has_all_memory */
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0, /* to_has_memory */
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0, /* to_has_registers */
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0, /* to_has_execution */
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0, /* to_sections */
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0, /* to_sections_end */
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OPS_MAGIC, /* to_magic */
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};
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/* Top of target stack. */
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struct target_stack_item *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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#ifdef MAINTENANCE_CMDS
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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 setup_target_debug PARAMS ((void));
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#endif
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/* The user just typed 'target' without the name of a target. */
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/* ARGSUSED */
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static void
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target_command (arg, from_tty)
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char *arg;
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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 (t)
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struct target_ops *t;
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{
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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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/* cleanup_target (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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static void
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ignore ()
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{
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}
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/* ARGSUSED */
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static int
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nomemory (memaddr, myaddr, len, write, t)
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CORE_ADDR memaddr;
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char *myaddr;
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int len;
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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 ()
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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 ()
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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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/* ARGSUSED */
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static int
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nosymbol (name, addrp)
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char *name;
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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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/* ARGSUSED */
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static void
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default_terminal_info (args, from_tty)
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char *args;
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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 (from_tty)
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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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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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} else {
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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 (args, from_tty)
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char *args;
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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 (exec, args, env)
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char *exec;
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char *args;
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char **env;
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{
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kill_or_be_killed (0);
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target_create_inferior (exec, args, env);
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}
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/* Clean up a target struct so it no longer has any zero pointers in it.
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We default entries, at least to stubs that print error messages. */
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static void
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cleanup_target (t)
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struct target_ops *t;
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{
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#define de_fault(field, value) \
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if (!t->field) t->field = value
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/* FIELD DEFAULT VALUE */
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de_fault (to_open, (void (*)())tcomplain);
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de_fault (to_close, (void (*)())ignore);
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de_fault (to_attach, maybe_kill_then_attach);
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de_fault (to_detach, (void (*)())ignore);
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de_fault (to_resume, (void (*)())noprocess);
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de_fault (to_wait, (int (*)())noprocess);
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de_fault (to_fetch_registers, (void (*)())ignore);
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de_fault (to_store_registers, (void (*)())noprocess);
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de_fault (to_prepare_to_store, (void (*)())noprocess);
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de_fault (to_xfer_memory, (int (*)())nomemory);
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de_fault (to_files_info, (void (*)())ignore);
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de_fault (to_insert_breakpoint, memory_insert_breakpoint);
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de_fault (to_remove_breakpoint, memory_remove_breakpoint);
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de_fault (to_terminal_init, ignore);
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de_fault (to_terminal_inferior, ignore);
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de_fault (to_terminal_ours_for_output,ignore);
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de_fault (to_terminal_ours, ignore);
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de_fault (to_terminal_info, default_terminal_info);
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de_fault (to_kill, (void (*)())noprocess);
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de_fault (to_load, (void (*)())tcomplain);
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de_fault (to_lookup_symbol, nosymbol);
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de_fault (to_create_inferior, maybe_kill_then_create_inferior);
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de_fault (to_mourn_inferior, (void (*)())noprocess);
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de_fault (to_can_run, return_zero);
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de_fault (to_notice_signals, (void (*)())ignore);
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de_fault (to_thread_alive, (int (*)())ignore);
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de_fault (to_stop, (void (*)())ignore);
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#undef de_fault
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}
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/* Go through the target stack from top to bottom, copying over zero entries in
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current_target. In effect, we are doing class inheritance through the
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pushed target vectors. */
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static void
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update_current_target ()
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{
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struct target_stack_item *item;
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struct target_ops *t;
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/* First, reset current_target */
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memset (¤t_target, 0, sizeof current_target);
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for (item = target_stack; item; item = item->next)
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{
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t = item->target_ops;
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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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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_detach, 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 (to_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_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_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_mourn_inferior, t);
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INHERIT (to_can_run, t);
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INHERIT (to_notice_signals, t);
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||
INHERIT (to_thread_alive, t);
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||
INHERIT (to_stop, t);
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||
INHERIT (to_stratum, t);
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INHERIT (DONT_USE, t);
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INHERIT (to_has_all_memory, t);
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INHERIT (to_has_memory, t);
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INHERIT (to_has_stack, t);
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INHERIT (to_has_registers, t);
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INHERIT (to_has_execution, t);
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INHERIT (to_sections, t);
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INHERIT (to_sections_end, t);
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||
INHERIT (to_magic, t);
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||
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||
#undef INHERIT
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}
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}
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||
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||
/* Push a new target type into the stack of the existing target accessors,
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possibly superseding some of the existing accessors.
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Result is zero if the pushed target ended up on top of the stack,
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nonzero if at least one target is on top of it.
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||
|
||
Rather than allow an empty stack, we always have the dummy target at
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the bottom stratum, so we can call the function vectors without
|
||
checking them. */
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||
|
||
int
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||
push_target (t)
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||
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);
|
||
abort();
|
||
}
|
||
|
||
/* 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. */
|
||
(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;
|
||
free (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 */
|
||
|
||
#ifdef MAINTENANCE_CMDS
|
||
if (targetdebug)
|
||
setup_target_debug ();
|
||
#endif
|
||
|
||
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 (t)
|
||
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;
|
||
|
||
free (cur); /* Release the target_stack_item */
|
||
|
||
update_current_target ();
|
||
cleanup_target (¤t_target);
|
||
|
||
return 1;
|
||
}
|
||
|
||
void
|
||
pop_target ()
|
||
{
|
||
(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);
|
||
abort();
|
||
}
|
||
|
||
#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 (memaddr, string, len, errnop)
|
||
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)
|
||
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 (memaddr, myaddr, len)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
{
|
||
return target_xfer_memory (memaddr, myaddr, len, 0);
|
||
}
|
||
|
||
/* Read LEN bytes of target memory at address MEMADDR, placing the results
|
||
in GDB's memory at MYADDR. Returns a count of the bytes actually read,
|
||
and optionally an errno value in the location pointed to by ERRNOPTR
|
||
if ERRNOPTR is non-null. */
|
||
|
||
int
|
||
target_read_memory_partial (memaddr, myaddr, len, errnoptr)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int *errnoptr;
|
||
{
|
||
int nread; /* Number of bytes actually read. */
|
||
int errcode; /* Error from last read. */
|
||
|
||
/* First try a complete read. */
|
||
errcode = target_xfer_memory (memaddr, myaddr, len, 0);
|
||
if (errcode == 0)
|
||
{
|
||
/* Got it all. */
|
||
nread = len;
|
||
}
|
||
else
|
||
{
|
||
/* Loop, reading one byte at a time until we get as much as we can. */
|
||
for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
|
||
{
|
||
errcode = target_xfer_memory (memaddr++, myaddr++, 1, 0);
|
||
}
|
||
/* If an error, the last read was unsuccessful, so adjust count. */
|
||
if (errcode != 0)
|
||
{
|
||
nread--;
|
||
}
|
||
}
|
||
if (errnoptr != NULL)
|
||
{
|
||
*errnoptr = errcode;
|
||
}
|
||
return (nread);
|
||
}
|
||
|
||
int
|
||
target_write_memory (memaddr, myaddr, len)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
{
|
||
return target_xfer_memory (memaddr, myaddr, len, 1);
|
||
}
|
||
|
||
/* Move memory to or from the targets. Iterate until all of it has
|
||
been moved, if necessary. The top target gets priority; anything
|
||
it doesn't want, is offered to the next one down, etc. Note the
|
||
business with curlen: if an early target says "no, but I have a
|
||
boundary overlapping this xfer" then we shorten what we offer to
|
||
the subsequent targets so the early guy will get a chance at the
|
||
tail before the subsequent ones do.
|
||
|
||
Result is 0 or errno value. */
|
||
|
||
int
|
||
target_xfer_memory (memaddr, myaddr, len, write)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int write;
|
||
{
|
||
int curlen;
|
||
int res;
|
||
struct target_ops *t;
|
||
struct target_stack_item *item;
|
||
|
||
/* to_xfer_memory is not guaranteed to set errno, even when it returns
|
||
0. */
|
||
errno = 0;
|
||
|
||
/* The quick case is that the top target does it all. */
|
||
res = current_target.to_xfer_memory
|
||
(memaddr, myaddr, len, write, ¤t_target);
|
||
if (res == len)
|
||
return 0;
|
||
|
||
if (res > 0)
|
||
goto bump;
|
||
/* If res <= 0 then we call it again in the loop. Ah well. */
|
||
|
||
for (; len > 0;)
|
||
{
|
||
curlen = len; /* Want to do it all */
|
||
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, curlen, write, t);
|
||
if (res > 0)
|
||
break; /* Handled all or part of xfer */
|
||
if (t->to_has_all_memory)
|
||
break;
|
||
}
|
||
|
||
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;
|
||
}
|
||
bump:
|
||
memaddr += res;
|
||
myaddr += res;
|
||
len -= res;
|
||
}
|
||
return 0; /* We managed to cover it all somehow. */
|
||
}
|
||
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
target_info (args, from_tty)
|
||
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 (from_tty)
|
||
int from_tty;
|
||
{
|
||
dont_repeat();
|
||
|
||
if (target_has_execution)
|
||
{
|
||
if (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 (args, from_tty)
|
||
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 (modname, t_reloc)
|
||
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;
|
||
}
|
||
|
||
/* 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 (do_mesg)
|
||
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 (args, from_tty)
|
||
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 (exec_file, allargs, env)
|
||
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;
|
||
}
|
||
|
||
static int
|
||
return_zero ()
|
||
{
|
||
return 0;
|
||
}
|
||
|
||
struct target_ops *
|
||
find_core_target ()
|
||
{
|
||
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);
|
||
}
|
||
|
||
/* The inferior process has died. Long live the inferior! */
|
||
|
||
void
|
||
generic_mourn_inferior ()
|
||
{
|
||
extern int show_breakpoint_hit_counts;
|
||
|
||
inferior_pid = 0;
|
||
attach_flag = 0;
|
||
breakpoint_init_inferior ();
|
||
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 ();
|
||
}
|
||
|
||
/* This table must match in order and size the signals in enum target_signal
|
||
in target.h. */
|
||
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 relinguish 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"},
|
||
|
||
{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"}
|
||
};
|
||
|
||
/* Return the string for a signal. */
|
||
char *
|
||
target_signal_to_string (sig)
|
||
enum target_signal sig;
|
||
{
|
||
return signals[sig].string;
|
||
}
|
||
|
||
/* Return the name for a signal. */
|
||
char *
|
||
target_signal_to_name (sig)
|
||
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 (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 (hostsig)
|
||
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 (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
|
||
#if defined (REALTIME_LO)
|
||
if (hostsig >= REALTIME_LO && hostsig < REALTIME_HI)
|
||
return (enum target_signal)
|
||
(hostsig - 33 + (int) TARGET_SIGNAL_REALTIME_33);
|
||
#endif
|
||
return TARGET_SIGNAL_UNKNOWN;
|
||
}
|
||
|
||
int
|
||
target_signal_to_host (oursig)
|
||
enum target_signal oursig;
|
||
{
|
||
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 (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
|
||
default:
|
||
#if defined (REALTIME_LO)
|
||
if (oursig >= TARGET_SIGNAL_REALTIME_33
|
||
&& oursig <= TARGET_SIGNAL_REALTIME_63)
|
||
{
|
||
int retsig =
|
||
(int)oursig - (int)TARGET_SIGNAL_REALTIME_33 + REALTIME_LO;
|
||
if (retsig < REALTIME_HI)
|
||
return retsig;
|
||
}
|
||
#endif
|
||
/* 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;
|
||
}
|
||
}
|
||
|
||
/* 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 (ourstatus, hoststatus)
|
||
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 obscelescent. 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 (num)
|
||
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) PARAMS ((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 (pid)
|
||
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;
|
||
}
|
||
|
||
#ifdef MAINTENANCE_CMDS
|
||
static struct target_ops debug_target;
|
||
|
||
static void
|
||
debug_to_open (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
debug_target.to_open (args, from_tty);
|
||
|
||
fprintf_unfiltered (stderr, "target_open (%s, %d)\n", args, from_tty);
|
||
}
|
||
|
||
static void
|
||
debug_to_close (quitting)
|
||
int quitting;
|
||
{
|
||
debug_target.to_close (quitting);
|
||
|
||
fprintf_unfiltered (stderr, "target_close (%d)\n", quitting);
|
||
}
|
||
|
||
static void
|
||
debug_to_attach (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
debug_target.to_attach (args, from_tty);
|
||
|
||
fprintf_unfiltered (stderr, "target_attach (%s, %d)\n", args, from_tty);
|
||
}
|
||
|
||
static void
|
||
debug_to_detach (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
debug_target.to_detach (args, from_tty);
|
||
|
||
fprintf_unfiltered (stderr, "target_detach (%s, %d)\n", args, from_tty);
|
||
}
|
||
|
||
static void
|
||
debug_to_resume (pid, step, siggnal)
|
||
int pid;
|
||
int step;
|
||
enum target_signal siggnal;
|
||
{
|
||
debug_target.to_resume (pid, step, siggnal);
|
||
|
||
fprintf_unfiltered (stderr, "target_resume (%d, %s, %s)\n", pid,
|
||
step ? "step" : "continue",
|
||
target_signal_to_name (siggnal));
|
||
}
|
||
|
||
static int
|
||
debug_to_wait (pid, status)
|
||
int pid;
|
||
struct target_waitstatus *status;
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_wait (pid, status);
|
||
|
||
fprintf_unfiltered (stderr, "target_wait (%d, status) = %d, ", pid, retval);
|
||
fprintf_unfiltered (stderr, "status->kind = ");
|
||
switch (status->kind)
|
||
{
|
||
case TARGET_WAITKIND_EXITED:
|
||
fprintf_unfiltered (stderr, "exited, status = %d\n", status->value.integer);
|
||
break;
|
||
case TARGET_WAITKIND_STOPPED:
|
||
fprintf_unfiltered (stderr, "stopped, signal = %s\n",
|
||
target_signal_to_name (status->value.sig));
|
||
break;
|
||
case TARGET_WAITKIND_SIGNALLED:
|
||
fprintf_unfiltered (stderr, "signalled, signal = %s\n",
|
||
target_signal_to_name (status->value.sig));
|
||
break;
|
||
case TARGET_WAITKIND_LOADED:
|
||
fprintf_unfiltered (stderr, "loaded\n");
|
||
break;
|
||
case TARGET_WAITKIND_SPURIOUS:
|
||
fprintf_unfiltered (stderr, "spurious\n");
|
||
break;
|
||
default:
|
||
fprintf_unfiltered (stderr, "unknown???\n");
|
||
break;
|
||
}
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_fetch_registers (regno)
|
||
int regno;
|
||
{
|
||
debug_target.to_fetch_registers (regno);
|
||
|
||
fprintf_unfiltered (stderr, "target_fetch_registers (%s)",
|
||
regno != -1 ? reg_names[regno] : "-1");
|
||
if (regno != -1)
|
||
fprintf_unfiltered (stderr, " = 0x%x %d", read_register (regno),
|
||
read_register (regno));
|
||
fprintf_unfiltered (stderr, "\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_store_registers (regno)
|
||
int regno;
|
||
{
|
||
debug_target.to_store_registers (regno);
|
||
|
||
if (regno >= 0 && regno < NUM_REGS)
|
||
fprintf_unfiltered (stderr, "target_store_registers (%s) = 0x%x %d\n",
|
||
reg_names[regno], read_register (regno),
|
||
read_register (regno));
|
||
else
|
||
fprintf_unfiltered (stderr, "target_store_registers (%d)\n", regno);
|
||
}
|
||
|
||
static void
|
||
debug_to_prepare_to_store ()
|
||
{
|
||
debug_target.to_prepare_to_store ();
|
||
|
||
fprintf_unfiltered (stderr, "target_prepare_to_store ()\n");
|
||
}
|
||
|
||
static int
|
||
debug_to_xfer_memory (memaddr, myaddr, len, write, target)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int write;
|
||
struct target_ops *target;
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_xfer_memory (memaddr, myaddr, len, write, target);
|
||
|
||
fprintf_unfiltered (stderr, "target_xfer_memory (0x%x, xxx, %d, %s, xxx) = %d",
|
||
memaddr, len, write ? "write" : "read", retval);
|
||
|
||
if (retval > 0)
|
||
{
|
||
int i;
|
||
|
||
fputs_unfiltered (", bytes =", gdb_stderr);
|
||
for (i = 0; i < retval; i++)
|
||
fprintf_unfiltered (stderr, " %02x", myaddr[i] & 0xff);
|
||
}
|
||
|
||
fputc_unfiltered ('\n', gdb_stderr);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_files_info (target)
|
||
struct target_ops *target;
|
||
{
|
||
debug_target.to_files_info (target);
|
||
|
||
fprintf_unfiltered (stderr, "target_files_info (xxx)\n");
|
||
}
|
||
|
||
static int
|
||
debug_to_insert_breakpoint (addr, save)
|
||
CORE_ADDR addr;
|
||
char *save;
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_insert_breakpoint (addr, save);
|
||
|
||
fprintf_unfiltered (stderr, "target_insert_breakpoint (0x%x, xxx) = %d\n",
|
||
addr, retval);
|
||
return retval;
|
||
}
|
||
|
||
static int
|
||
debug_to_remove_breakpoint (addr, save)
|
||
CORE_ADDR addr;
|
||
char *save;
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_remove_breakpoint (addr, save);
|
||
|
||
fprintf_unfiltered (stderr, "target_remove_breakpoint (0x%x, xxx) = %d\n",
|
||
addr, retval);
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_init ()
|
||
{
|
||
debug_target.to_terminal_init ();
|
||
|
||
fprintf_unfiltered (stderr, "target_terminal_init ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_inferior ()
|
||
{
|
||
debug_target.to_terminal_inferior ();
|
||
|
||
fprintf_unfiltered (stderr, "target_terminal_inferior ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_ours_for_output ()
|
||
{
|
||
debug_target.to_terminal_ours_for_output ();
|
||
|
||
fprintf_unfiltered (stderr, "target_terminal_ours_for_output ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_ours ()
|
||
{
|
||
debug_target.to_terminal_ours ();
|
||
|
||
fprintf_unfiltered (stderr, "target_terminal_ours ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_terminal_info (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
debug_target.to_terminal_info (arg, from_tty);
|
||
|
||
fprintf_unfiltered (stderr, "target_terminal_info (%s, %d)\n", arg,
|
||
from_tty);
|
||
}
|
||
|
||
static void
|
||
debug_to_kill ()
|
||
{
|
||
debug_target.to_kill ();
|
||
|
||
fprintf_unfiltered (stderr, "target_kill ()\n");
|
||
}
|
||
|
||
static void
|
||
debug_to_load (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
debug_target.to_load (args, from_tty);
|
||
|
||
fprintf_unfiltered (stderr, "target_load (%s, %d)\n", args, from_tty);
|
||
}
|
||
|
||
static int
|
||
debug_to_lookup_symbol (name, addrp)
|
||
char *name;
|
||
CORE_ADDR *addrp;
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_lookup_symbol (name, addrp);
|
||
|
||
fprintf_unfiltered (stderr, "target_lookup_symbol (%s, xxx)\n", name);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_create_inferior (exec_file, args, env)
|
||
char *exec_file;
|
||
char *args;
|
||
char **env;
|
||
{
|
||
debug_target.to_create_inferior (exec_file, args, env);
|
||
|
||
fprintf_unfiltered (stderr, "target_create_inferior (%s, %s, xxx)\n",
|
||
exec_file, args);
|
||
}
|
||
|
||
static void
|
||
debug_to_mourn_inferior ()
|
||
{
|
||
debug_target.to_mourn_inferior ();
|
||
|
||
fprintf_unfiltered (stderr, "target_mourn_inferior ()\n");
|
||
}
|
||
|
||
static int
|
||
debug_to_can_run ()
|
||
{
|
||
int retval;
|
||
|
||
retval = debug_target.to_can_run ();
|
||
|
||
fprintf_unfiltered (stderr, "target_can_run () = %d\n", retval);
|
||
|
||
return retval;
|
||
}
|
||
|
||
static void
|
||
debug_to_notice_signals (pid)
|
||
int pid;
|
||
{
|
||
debug_target.to_notice_signals (pid);
|
||
|
||
fprintf_unfiltered (stderr, "target_notice_signals (%d)\n", pid);
|
||
}
|
||
|
||
static int
|
||
debug_to_thread_alive (pid)
|
||
int pid;
|
||
{
|
||
debug_target.to_thread_alive (pid);
|
||
|
||
fprintf_unfiltered (stderr, "target_thread_alive (%d)\n", pid);
|
||
return (0);
|
||
}
|
||
|
||
static void
|
||
debug_to_stop ()
|
||
{
|
||
debug_target.to_stop ();
|
||
|
||
fprintf_unfiltered (stderr, "target_stop ()\n");
|
||
}
|
||
|
||
static void
|
||
setup_target_debug ()
|
||
{
|
||
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_detach = debug_to_detach;
|
||
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.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_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_stop = debug_to_stop;
|
||
}
|
||
#endif /* MAINTENANCE_CMDS */
|
||
|
||
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.";
|
||
|
||
void
|
||
initialize_targets ()
|
||
{
|
||
push_target (&dummy_target);
|
||
|
||
add_info ("target", target_info, targ_desc);
|
||
add_info ("files", target_info, targ_desc);
|
||
|
||
#ifdef MAINTENANCE_CMDS
|
||
add_show_from_set (
|
||
add_set_cmd ("targetdebug", class_maintenance, var_zinteger,
|
||
(char *)&targetdebug,
|
||
"Set target debugging.\n\
|
||
When non-zero, target debugging is enabled.", &setlist),
|
||
&showlist);
|
||
#endif
|
||
|
||
if (!STREQ (signals[TARGET_SIGNAL_LAST].string, "TARGET_SIGNAL_MAGIC"))
|
||
abort ();
|
||
}
|