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-rw-r--r--gdb/target.c2581
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diff --git a/gdb/target.c b/gdb/target.c
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index 00000000000..808eb8fc16d
--- /dev/null
+++ b/gdb/target.c
@@ -0,0 +1,2581 @@
+/* Select target systems and architectures at runtime for GDB.
+ Copyright 1990, 1992-1995, 1998, 1999 Free Software Foundation, Inc.
+ Contributed by Cygnus Support.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include <errno.h>
+#include <ctype.h>
+#include "gdb_string.h"
+#include "target.h"
+#include "gdbcmd.h"
+#include "symtab.h"
+#include "inferior.h"
+#include "bfd.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "wait.h"
+#include <signal.h>
+
+extern int errno;
+
+static void
+target_info PARAMS ((char *, int));
+
+static void
+cleanup_target PARAMS ((struct target_ops *));
+
+static void
+maybe_kill_then_create_inferior PARAMS ((char *, char *, char **));
+
+static void
+default_clone_and_follow_inferior PARAMS ((int, int *));
+
+static void
+maybe_kill_then_attach PARAMS ((char *, int));
+
+static void
+kill_or_be_killed PARAMS ((int));
+
+static void
+default_terminal_info PARAMS ((char *, int));
+
+static int
+nosymbol PARAMS ((char *, CORE_ADDR *));
+
+static void
+tcomplain PARAMS ((void));
+
+static int
+nomemory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
+
+static int
+return_zero PARAMS ((void));
+
+static int
+return_one PARAMS ((void));
+
+void
+target_ignore PARAMS ((void));
+
+static void
+target_command PARAMS ((char *, int));
+
+static struct target_ops *
+find_default_run_target PARAMS ((char *));
+
+static void
+update_current_target PARAMS ((void));
+
+/* Transfer LEN bytes between target address MEMADDR and GDB address MYADDR.
+ Returns 0 for success, errno code for failure (which includes partial
+ transfers--if you want a more useful response to partial transfers, try
+ target_read_memory_partial). */
+
+static int
+target_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len,
+ int write, asection *bfd_section));
+
+static void init_dummy_target PARAMS ((void));
+
+static void
+debug_to_open PARAMS ((char *, int));
+
+static void
+debug_to_close PARAMS ((int));
+
+static void
+debug_to_attach PARAMS ((char *, int));
+
+static void
+debug_to_detach PARAMS ((char *, int));
+
+static void
+debug_to_resume PARAMS ((int, int, enum target_signal));
+
+static int
+debug_to_wait PARAMS ((int, struct target_waitstatus *));
+
+static void
+debug_to_fetch_registers PARAMS ((int));
+
+static void
+debug_to_store_registers PARAMS ((int));
+
+static void
+debug_to_prepare_to_store PARAMS ((void));
+
+static int
+debug_to_xfer_memory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
+
+static void
+debug_to_files_info PARAMS ((struct target_ops *));
+
+static int
+debug_to_insert_breakpoint PARAMS ((CORE_ADDR, char *));
+
+static int
+debug_to_remove_breakpoint PARAMS ((CORE_ADDR, char *));
+
+static void
+debug_to_terminal_init PARAMS ((void));
+
+static void
+debug_to_terminal_inferior PARAMS ((void));
+
+static void
+debug_to_terminal_ours_for_output PARAMS ((void));
+
+static void
+debug_to_terminal_ours PARAMS ((void));
+
+static void
+debug_to_terminal_info PARAMS ((char *, int));
+
+static void
+debug_to_kill PARAMS ((void));
+
+static void
+debug_to_load PARAMS ((char *, int));
+
+static int
+debug_to_lookup_symbol PARAMS ((char *, CORE_ADDR *));
+
+static void
+debug_to_create_inferior PARAMS ((char *, char *, char **));
+
+static void
+debug_to_mourn_inferior PARAMS ((void));
+
+static int
+debug_to_can_run PARAMS ((void));
+
+static void
+debug_to_notice_signals PARAMS ((int));
+
+static int
+debug_to_thread_alive PARAMS ((int));
+
+static void
+debug_to_stop PARAMS ((void));
+
+static int debug_to_query PARAMS ((int/*char*/, char *, char *, int *));
+
+/* Pointer to array of target architecture structures; the size of the
+ array; the current index into the array; the allocated size of the
+ array. */
+struct target_ops **target_structs;
+unsigned target_struct_size;
+unsigned target_struct_index;
+unsigned target_struct_allocsize;
+#define DEFAULT_ALLOCSIZE 10
+
+/* The initial current target, so that there is always a semi-valid
+ current target. */
+
+static struct target_ops dummy_target;
+
+/* Top of target stack. */
+
+struct target_stack_item *target_stack;
+
+/* The target structure we are currently using to talk to a process
+ or file or whatever "inferior" we have. */
+
+struct target_ops current_target;
+
+/* Command list for target. */
+
+static struct cmd_list_element *targetlist = NULL;
+
+/* Nonzero if we are debugging an attached outside process
+ rather than an inferior. */
+
+int attach_flag;
+
+#ifdef MAINTENANCE_CMDS
+/* Non-zero if we want to see trace of target level stuff. */
+
+static int targetdebug = 0;
+
+static void setup_target_debug PARAMS ((void));
+
+#endif
+
+/* The user just typed 'target' without the name of a target. */
+
+/* ARGSUSED */
+static void
+target_command (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ fputs_filtered ("Argument required (target name). Try `help target'\n",
+ gdb_stdout);
+}
+
+/* Add a possible target architecture to the list. */
+
+void
+add_target (t)
+ struct target_ops *t;
+{
+ if (!target_structs)
+ {
+ target_struct_allocsize = DEFAULT_ALLOCSIZE;
+ target_structs = (struct target_ops **) xmalloc
+ (target_struct_allocsize * sizeof (*target_structs));
+ }
+ if (target_struct_size >= target_struct_allocsize)
+ {
+ target_struct_allocsize *= 2;
+ target_structs = (struct target_ops **)
+ xrealloc ((char *) target_structs,
+ target_struct_allocsize * sizeof (*target_structs));
+ }
+ target_structs[target_struct_size++] = t;
+/* cleanup_target (t);*/
+
+ if (targetlist == NULL)
+ add_prefix_cmd ("target", class_run, target_command,
+ "Connect to a target machine or process.\n\
+The first argument is the type or protocol of the target machine.\n\
+Remaining arguments are interpreted by the target protocol. For more\n\
+information on the arguments for a particular protocol, type\n\
+`help target ' followed by the protocol name.",
+ &targetlist, "target ", 0, &cmdlist);
+ add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist);
+}
+
+/* Stub functions */
+
+void
+target_ignore ()
+{
+}
+
+/* ARGSUSED */
+static int
+nomemory (memaddr, myaddr, len, write, t)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+ int write;
+ struct target_ops *t;
+{
+ errno = EIO; /* Can't read/write this location */
+ return 0; /* No bytes handled */
+}
+
+static void
+tcomplain ()
+{
+ error ("You can't do that when your target is `%s'",
+ current_target.to_shortname);
+}
+
+void
+noprocess ()
+{
+ error ("You can't do that without a process to debug.");
+}
+
+/* ARGSUSED */
+static int
+nosymbol (name, addrp)
+ char *name;
+ CORE_ADDR *addrp;
+{
+ return 1; /* Symbol does not exist in target env */
+}
+
+/* ARGSUSED */
+void
+nosupport_runtime ()
+{
+ if (!inferior_pid)
+ noprocess ();
+ else
+ error ("No run-time support for this");
+}
+
+
+/* ARGSUSED */
+static void
+default_terminal_info (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ printf_unfiltered("No saved terminal information.\n");
+}
+
+/* This is the default target_create_inferior and target_attach function.
+ If the current target is executing, it asks whether to kill it off.
+ If this function returns without calling error(), it has killed off
+ the target, and the operation should be attempted. */
+
+static void
+kill_or_be_killed (from_tty)
+ int from_tty;
+{
+ if (target_has_execution)
+ {
+ printf_unfiltered ("You are already running a program:\n");
+ target_files_info ();
+ if (query ("Kill it? ")) {
+ target_kill ();
+ if (target_has_execution)
+ error ("Killing the program did not help.");
+ return;
+ } else {
+ error ("Program not killed.");
+ }
+ }
+ tcomplain();
+}
+
+static void
+maybe_kill_then_attach (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ kill_or_be_killed (from_tty);
+ target_attach (args, from_tty);
+}
+
+static void
+maybe_kill_then_create_inferior (exec, args, env)
+ char *exec;
+ char *args;
+ char **env;
+{
+ kill_or_be_killed (0);
+ target_create_inferior (exec, args, env);
+}
+
+static void
+default_clone_and_follow_inferior (child_pid, followed_child)
+ int child_pid;
+ int *followed_child;
+{
+ target_clone_and_follow_inferior (child_pid, followed_child);
+}
+
+/* Clean up a target struct so it no longer has any zero pointers in it.
+ We default entries, at least to stubs that print error messages. */
+
+static void
+cleanup_target (t)
+ struct target_ops *t;
+{
+
+#define de_fault(field, value) \
+ if (!t->field) t->field = value
+
+ /* FIELD DEFAULT VALUE */
+
+ de_fault (to_open, (void (*) PARAMS((char *, int))) tcomplain);
+ de_fault (to_close, (void (*) PARAMS((int))) target_ignore);
+ de_fault (to_attach, maybe_kill_then_attach);
+ de_fault (to_post_attach, (void (*) PARAMS ((int))) target_ignore);
+ de_fault (to_require_attach, maybe_kill_then_attach);
+ de_fault (to_detach, (void (*) PARAMS((char *, int))) target_ignore);
+ de_fault (to_require_detach, (void (*) PARAMS((int, char *, int))) target_ignore);
+ de_fault (to_resume, (void (*) PARAMS((int, int, enum target_signal))) noprocess);
+ de_fault (to_wait, (int (*) PARAMS((int, struct target_waitstatus *))) noprocess);
+ de_fault (to_post_wait, (void (*) PARAMS ((int, int))) target_ignore);
+ de_fault (to_fetch_registers, (void (*) PARAMS((int))) target_ignore);
+ de_fault (to_store_registers, (void (*) PARAMS((int))) noprocess);
+ de_fault (to_prepare_to_store, (void (*) PARAMS((void))) noprocess);
+ de_fault (to_xfer_memory, (int (*) PARAMS((CORE_ADDR, char *, int, int, struct target_ops *))) nomemory);
+ de_fault (to_files_info, (void (*) PARAMS((struct target_ops *))) target_ignore);
+ de_fault (to_insert_breakpoint, memory_insert_breakpoint);
+ de_fault (to_remove_breakpoint, memory_remove_breakpoint);
+ de_fault (to_terminal_init, (void (*) PARAMS((void))) target_ignore);
+ de_fault (to_terminal_inferior, (void (*) PARAMS ((void))) target_ignore);
+ de_fault (to_terminal_ours_for_output,(void (*) PARAMS ((void))) target_ignore);
+ de_fault (to_terminal_ours, (void (*) PARAMS ((void))) target_ignore);
+ de_fault (to_terminal_info, default_terminal_info);
+ de_fault (to_kill, (void (*) PARAMS((void))) noprocess);
+ de_fault (to_load, (void (*) PARAMS((char *, int))) tcomplain);
+ de_fault (to_lookup_symbol, (int (*) PARAMS ((char *, CORE_ADDR *))) nosymbol);
+ de_fault (to_create_inferior, maybe_kill_then_create_inferior);
+ de_fault (to_post_startup_inferior, (void (*) PARAMS ((int))) target_ignore);
+ de_fault (to_acknowledge_created_inferior, (void (*) PARAMS((int))) target_ignore);
+ de_fault (to_clone_and_follow_inferior, default_clone_and_follow_inferior);
+ de_fault (to_post_follow_inferior_by_clone, (void (*) PARAMS ((void))) target_ignore);
+ de_fault (to_insert_fork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
+ de_fault (to_remove_fork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
+ de_fault (to_insert_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
+ de_fault (to_remove_vfork_catchpoint, (int (*) PARAMS ((int))) tcomplain);
+ de_fault (to_has_forked, (int (*) PARAMS ((int, int *))) return_zero);
+ de_fault (to_has_vforked, (int (*) PARAMS ((int, int *))) return_zero);
+ de_fault (to_can_follow_vfork_prior_to_exec, (int (*) PARAMS ((void ))) return_zero);
+ de_fault (to_post_follow_vfork, (void (*) PARAMS ((int, int, int, int))) target_ignore);
+ de_fault (to_insert_exec_catchpoint, (int (*) PARAMS ((int))) tcomplain);
+ de_fault (to_remove_exec_catchpoint, (int (*) PARAMS ((int))) tcomplain);
+ de_fault (to_has_execd, (int (*) PARAMS ((int, char **))) return_zero);
+ de_fault (to_reported_exec_events_per_exec_call, (int (*) PARAMS ((void))) return_one);
+ de_fault (to_has_syscall_event, (int (*) PARAMS ((int, enum target_waitkind *, int *))) return_zero);
+ de_fault (to_has_exited, (int (*) PARAMS ((int, int, int *))) return_zero);
+ de_fault (to_mourn_inferior, (void (*) PARAMS ((void))) noprocess);
+ de_fault (to_can_run, return_zero);
+ de_fault (to_notice_signals, (void (*) PARAMS((int))) target_ignore);
+ de_fault (to_thread_alive, (int (*) PARAMS((int))) target_ignore);
+ de_fault (to_stop, (void (*) PARAMS((void))) target_ignore);
+ de_fault (to_query, (int (*) PARAMS((int/*char*/, char*, char *, int *))) target_ignore);
+ de_fault (to_enable_exception_callback, (struct symtab_and_line * (*) PARAMS((enum exception_event_kind, int))) nosupport_runtime);
+ de_fault (to_get_current_exception_event, (struct exception_event_record * (*) PARAMS((void))) nosupport_runtime);
+
+ de_fault (to_pid_to_exec_file, (char* (*) PARAMS((int))) return_zero);
+ de_fault (to_core_file_to_sym_file, (char* (*) PARAMS ((char *))) return_zero);
+#undef de_fault
+}
+
+/* Go through the target stack from top to bottom, copying over zero entries in
+ current_target. In effect, we are doing class inheritance through the
+ pushed target vectors. */
+
+static void
+update_current_target ()
+{
+ struct target_stack_item *item;
+ struct target_ops *t;
+
+ /* First, reset current_target */
+ memset (&current_target, 0, sizeof current_target);
+
+ for (item = target_stack; item; item = item->next)
+ {
+ t = item->target_ops;
+
+#define INHERIT(FIELD, TARGET) \
+ if (!current_target.FIELD) \
+ current_target.FIELD = TARGET->FIELD
+
+ INHERIT (to_shortname, t);
+ INHERIT (to_longname, t);
+ INHERIT (to_doc, t);
+ INHERIT (to_open, t);
+ INHERIT (to_close, t);
+ INHERIT (to_attach, t);
+ INHERIT (to_post_attach, t);
+ INHERIT (to_require_attach, t);
+ INHERIT (to_detach, t);
+ INHERIT (to_require_detach, t);
+ INHERIT (to_resume, t);
+ INHERIT (to_wait, t);
+ INHERIT (to_post_wait, t);
+ INHERIT (to_fetch_registers, t);
+ INHERIT (to_store_registers, t);
+ INHERIT (to_prepare_to_store, t);
+ INHERIT (to_xfer_memory, t);
+ INHERIT (to_files_info, t);
+ INHERIT (to_insert_breakpoint, t);
+ INHERIT (to_remove_breakpoint, t);
+ INHERIT (to_terminal_init, t);
+ INHERIT (to_terminal_inferior, t);
+ INHERIT (to_terminal_ours_for_output, t);
+ INHERIT (to_terminal_ours, t);
+ INHERIT (to_terminal_info, t);
+ INHERIT (to_kill, t);
+ INHERIT (to_load, t);
+ INHERIT (to_lookup_symbol, t);
+ INHERIT (to_create_inferior, t);
+ INHERIT (to_post_startup_inferior, t);
+ INHERIT (to_acknowledge_created_inferior, t);
+ INHERIT (to_clone_and_follow_inferior, t);
+ INHERIT (to_post_follow_inferior_by_clone, t);
+ INHERIT (to_insert_fork_catchpoint, t);
+ INHERIT (to_remove_fork_catchpoint, t);
+ INHERIT (to_insert_vfork_catchpoint, t);
+ INHERIT (to_remove_vfork_catchpoint, t);
+ INHERIT (to_has_forked, t);
+ INHERIT (to_has_vforked, t);
+ INHERIT (to_can_follow_vfork_prior_to_exec, t);
+ INHERIT (to_post_follow_vfork, t);
+ INHERIT (to_insert_exec_catchpoint, t);
+ INHERIT (to_remove_exec_catchpoint, t);
+ INHERIT (to_has_execd, t);
+ INHERIT (to_reported_exec_events_per_exec_call, t);
+ INHERIT (to_has_syscall_event, t);
+ INHERIT (to_has_exited, t);
+ INHERIT (to_mourn_inferior, t);
+ INHERIT (to_can_run, t);
+ INHERIT (to_notice_signals, t);
+ INHERIT (to_thread_alive, t);
+ INHERIT (to_stop, t);
+ INHERIT (to_query, t);
+ INHERIT (to_enable_exception_callback, t);
+ INHERIT (to_get_current_exception_event, t);
+ INHERIT (to_pid_to_exec_file, t);
+ INHERIT (to_core_file_to_sym_file, t);
+ INHERIT (to_stratum, t);
+ INHERIT (DONT_USE, t);
+ INHERIT (to_has_all_memory, t);
+ INHERIT (to_has_memory, t);
+ INHERIT (to_has_stack, t);
+ INHERIT (to_has_registers, t);
+ INHERIT (to_has_execution, t);
+ INHERIT (to_has_thread_control, t);
+ INHERIT (to_sections, t);
+ INHERIT (to_sections_end, t);
+ INHERIT (to_magic, t);
+
+#undef INHERIT
+ }
+}
+
+/* Push a new target type into the stack of the existing target accessors,
+ possibly superseding some of the existing accessors.
+
+ Result is zero if the pushed target ended up on top of the stack,
+ nonzero if at least one target is on top of it.
+
+ Rather than allow an empty stack, we always have the dummy target at
+ the bottom stratum, so we can call the function vectors without
+ checking them. */
+
+int
+push_target (t)
+ 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. */
+ if (cur->target_ops->to_close)
+ (cur->target_ops->to_close) (0);
+ if (prev)
+ prev->next = cur->next; /* Unchain old target_ops */
+ else
+ target_stack = cur->next; /* Unchain first on list */
+ tmp = cur->next;
+ 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 (&current_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 (&current_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, NULL);
+ if (errcode != 0)
+ {
+ /* The transfer request might have crossed the boundary to an
+ unallocated region of memory. Retry the transfer, requesting
+ a single byte. */
+ tlen = 1;
+ offset = 0;
+ errcode = target_xfer_memory (memaddr, buf, 1, 0, NULL);
+ 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, NULL);
+}
+
+int
+target_read_memory_section (memaddr, myaddr, len, bfd_section)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+ asection *bfd_section;
+{
+ return target_xfer_memory (memaddr, myaddr, len, 0, bfd_section);
+}
+
+/* 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, NULL);
+ 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, NULL);
+ }
+ /* 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, NULL);
+}
+
+/* This variable is used to pass section information down to targets. This
+ *should* be done by adding an argument to the target_xfer_memory function
+ of all the targets, but I didn't feel like changing 50+ files. */
+
+asection *target_memory_bfd_section = NULL;
+
+/* 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. */
+
+static int
+target_xfer_memory (memaddr, myaddr, len, write, bfd_section)
+ CORE_ADDR memaddr;
+ char *myaddr;
+ int len;
+ int write;
+ asection *bfd_section;
+{
+ int curlen;
+ int res;
+ struct target_ops *t;
+ struct target_stack_item *item;
+
+ /* Zero length requests are ok and require no work. */
+ if (len == 0)
+ return 0;
+
+ target_memory_bfd_section = bfd_section;
+
+ /* 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, &current_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_require_attach (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ struct target_ops *t;
+
+ t = find_default_run_target("require_attach");
+ (t->to_require_attach) (args, from_tty);
+ return;
+}
+
+void
+find_default_require_detach (pid, args, from_tty)
+ int pid;
+ char * args;
+ int from_tty;
+{
+ struct target_ops *t;
+
+ t = find_default_run_target("require_detach");
+ (t->to_require_detach) (pid, args, from_tty);
+ return;
+}
+
+void
+find_default_create_inferior (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;
+}
+
+void
+find_default_clone_and_follow_inferior (child_pid, followed_child)
+ int child_pid;
+ int *followed_child;
+{
+ struct target_ops *t;
+
+ t = find_default_run_target("run");
+ (t->to_clone_and_follow_inferior) (child_pid, followed_child);
+ return;
+}
+
+static int
+return_zero ()
+{
+ return 0;
+}
+
+static int
+return_one ()
+{
+ return 1;
+}
+
+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 (inf_exited);
+ registers_changed ();
+
+#ifdef CLEAR_DEFERRED_STORES
+ /* Delete any pending stores to the inferior... */
+ CLEAR_DEFERRED_STORES;
+#endif
+
+ reopen_exec_file ();
+ reinit_frame_cache ();
+
+ /* It is confusing to the user for ignore counts to stick around
+ from previous runs of the inferior. So clear them. */
+ /* However, it is more confusing for the ignore counts to disappear when
+ using hit counts. So don't clear them if we're counting hits. */
+ if (!show_breakpoint_hit_counts)
+ breakpoint_clear_ignore_counts ();
+}
+
+/* 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 relinquish monitor mode"},
+ {"SIGMSG", "Monitor mode data available"},
+ {"SIGSOUND", "Sound completed"},
+ {"SIGSAK", "Secure attention"},
+ {"SIGPRIO", "SIGPRIO"},
+ {"SIG33", "Real-time event 33"},
+ {"SIG34", "Real-time event 34"},
+ {"SIG35", "Real-time event 35"},
+ {"SIG36", "Real-time event 36"},
+ {"SIG37", "Real-time event 37"},
+ {"SIG38", "Real-time event 38"},
+ {"SIG39", "Real-time event 39"},
+ {"SIG40", "Real-time event 40"},
+ {"SIG41", "Real-time event 41"},
+ {"SIG42", "Real-time event 42"},
+ {"SIG43", "Real-time event 43"},
+ {"SIG44", "Real-time event 44"},
+ {"SIG45", "Real-time event 45"},
+ {"SIG46", "Real-time event 46"},
+ {"SIG47", "Real-time event 47"},
+ {"SIG48", "Real-time event 48"},
+ {"SIG49", "Real-time event 49"},
+ {"SIG50", "Real-time event 50"},
+ {"SIG51", "Real-time event 51"},
+ {"SIG52", "Real-time event 52"},
+ {"SIG53", "Real-time event 53"},
+ {"SIG54", "Real-time event 54"},
+ {"SIG55", "Real-time event 55"},
+ {"SIG56", "Real-time event 56"},
+ {"SIG57", "Real-time event 57"},
+ {"SIG58", "Real-time event 58"},
+ {"SIG59", "Real-time event 59"},
+ {"SIG60", "Real-time event 60"},
+ {"SIG61", "Real-time event 61"},
+ {"SIG62", "Real-time event 62"},
+ {"SIG63", "Real-time event 63"},
+
+#if defined(MACH) || defined(__MACH__)
+ /* Mach exceptions */
+ {"EXC_BAD_ACCESS", "Could not access memory"},
+ {"EXC_BAD_INSTRUCTION", "Illegal instruction/operand"},
+ {"EXC_ARITHMETIC", "Arithmetic exception"},
+ {"EXC_EMULATION", "Emulation instruction"},
+ {"EXC_SOFTWARE", "Software generated exception"},
+ {"EXC_BREAKPOINT", "Breakpoint"},
+#endif
+ {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
+
+ /* Mach exceptions. Assumes that the values for EXC_ are positive! */
+#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_BAD_ACCESS) return TARGET_EXC_BAD_ACCESS;
+#endif
+#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_BAD_INSTRUCTION) return TARGET_EXC_BAD_INSTRUCTION;
+#endif
+#if defined (EXC_ARITHMETIC) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_ARITHMETIC) return TARGET_EXC_ARITHMETIC;
+#endif
+#if defined (EXC_EMULATION) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_EMULATION) return TARGET_EXC_EMULATION;
+#endif
+#if defined (EXC_SOFTWARE) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_SOFTWARE) return TARGET_EXC_SOFTWARE;
+#endif
+#if defined (EXC_BREAKPOINT) && defined (_NSIG)
+ if (hostsig == _NSIG + EXC_BREAKPOINT) return TARGET_EXC_BREAKPOINT;
+#endif
+
+#if defined (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
+
+ /* Mach exceptions. Assumes that the values for EXC_ are positive! */
+#if defined (EXC_BAD_ACCESS) && defined (_NSIG)
+ case TARGET_EXC_BAD_ACCESS: return _NSIG + EXC_BAD_ACCESS;
+#endif
+#if defined (EXC_BAD_INSTRUCTION) && defined (_NSIG)
+ case TARGET_EXC_BAD_INSTRUCTION: return _NSIG + EXC_BAD_INSTRUCTION;
+#endif
+#if defined (EXC_ARITHMETIC) && defined (_NSIG)
+ case TARGET_EXC_ARITHMETIC: return _NSIG + EXC_ARITHMETIC;
+#endif
+#if defined (EXC_EMULATION) && defined (_NSIG)
+ case TARGET_EXC_EMULATION: return _NSIG + EXC_EMULATION;
+#endif
+#if defined (EXC_SOFTWARE) && defined (_NSIG)
+ case TARGET_EXC_SOFTWARE: return _NSIG + EXC_SOFTWARE;
+#endif
+#if defined (EXC_BREAKPOINT) && defined (_NSIG)
+ case TARGET_EXC_BREAKPOINT: return _NSIG + EXC_BREAKPOINT;
+#endif
+
+ 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\0", pid);
+ else
+ sprintf (buf, "process %d\0", pid);
+
+ return buf;
+}
+
+/* Some targets (such as ttrace-based HPUX) don't allow us to request
+ notification of inferior events such as fork and vork immediately
+ after the inferior is created. (This because of how gdb gets an
+ inferior created via invoking a shell to do it. In such a scenario,
+ if the shell init file has commands in it, the shell will fork and
+ exec for each of those commands, and we will see each such fork
+ event. Very bad.)
+
+ This function is used by all targets that allow us to request
+ notification of forks, etc at inferior creation time; e.g., in
+ target_acknowledge_forked_child.
+ */
+void
+normal_target_post_startup_inferior (pid)
+ int pid;
+{
+ /* This space intentionally left blank. */
+}
+
+/* Set up the handful of non-empty slots needed by the dummy target
+ vector. */
+
+static void
+init_dummy_target ()
+{
+ dummy_target.to_shortname = "None";
+ dummy_target.to_longname = "None";
+ dummy_target.to_doc = "";
+ dummy_target.to_attach = find_default_attach;
+ dummy_target.to_require_attach = find_default_require_attach;
+ dummy_target.to_require_detach = find_default_require_detach;
+ dummy_target.to_create_inferior = find_default_create_inferior;
+ dummy_target.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior;
+ dummy_target.to_stratum = dummy_stratum;
+ dummy_target.to_magic = OPS_MAGIC;
+}
+
+
+#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 (gdb_stderr, "target_open (%s, %d)\n", args, from_tty);
+}
+
+static void
+debug_to_close (quitting)
+ int quitting;
+{
+ debug_target.to_close (quitting);
+
+ fprintf_unfiltered (gdb_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 (gdb_stderr, "target_attach (%s, %d)\n", args, from_tty);
+}
+
+
+static void
+debug_to_post_attach (pid)
+ int pid;
+{
+ debug_target.to_post_attach (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_post_attach (%d)\n", pid);
+}
+
+static void
+debug_to_require_attach (args, from_tty)
+ char *args;
+ int from_tty;
+{
+ debug_target.to_require_attach (args, from_tty);
+
+ fprintf_unfiltered (gdb_stderr,
+ "target_require_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 (gdb_stderr, "target_detach (%s, %d)\n", args, from_tty);
+}
+
+static void
+debug_to_require_detach (pid, args, from_tty)
+ int pid;
+ char * args;
+ int from_tty;
+{
+ debug_target.to_require_detach (pid, args, from_tty);
+
+ fprintf_unfiltered (gdb_stderr,
+ "target_require_detach (%d, %s, %d)\n", pid, 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 (gdb_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 (gdb_stderr,
+ "target_wait (%d, status) = %d, ", pid, retval);
+ fprintf_unfiltered (gdb_stderr, "status->kind = ");
+ switch (status->kind)
+ {
+ case TARGET_WAITKIND_EXITED:
+ fprintf_unfiltered (gdb_stderr, "exited, status = %d\n",
+ status->value.integer);
+ break;
+ case TARGET_WAITKIND_STOPPED:
+ fprintf_unfiltered (gdb_stderr, "stopped, signal = %s\n",
+ target_signal_to_name (status->value.sig));
+ break;
+ case TARGET_WAITKIND_SIGNALLED:
+ fprintf_unfiltered (gdb_stderr, "signalled, signal = %s\n",
+ target_signal_to_name (status->value.sig));
+ break;
+ case TARGET_WAITKIND_LOADED:
+ fprintf_unfiltered (gdb_stderr, "loaded\n");
+ break;
+ case TARGET_WAITKIND_FORKED:
+ fprintf_unfiltered (gdb_stderr, "forked\n");
+ break;
+ case TARGET_WAITKIND_VFORKED:
+ fprintf_unfiltered (gdb_stderr, "vforked\n");
+ break;
+ case TARGET_WAITKIND_EXECD:
+ fprintf_unfiltered (gdb_stderr, "execd\n");
+ break;
+ case TARGET_WAITKIND_SPURIOUS:
+ fprintf_unfiltered (gdb_stderr, "spurious\n");
+ break;
+ default:
+ fprintf_unfiltered (gdb_stderr, "unknown???\n");
+ break;
+ }
+
+ return retval;
+}
+
+static void
+debug_to_post_wait (pid, status)
+ int pid;
+ int status;
+{
+ debug_target.to_post_wait (pid, status);
+
+ fprintf_unfiltered (gdb_stderr, "target_post_wait (%d, %d)\n",
+ pid, status);
+}
+
+static void
+debug_to_fetch_registers (regno)
+ int regno;
+{
+ debug_target.to_fetch_registers (regno);
+
+ fprintf_unfiltered (gdb_stderr, "target_fetch_registers (%s)",
+ regno != -1 ? REGISTER_NAME (regno) : "-1");
+ if (regno != -1)
+ fprintf_unfiltered (gdb_stderr, " = 0x%x %d",
+ (unsigned long) read_register (regno),
+ read_register (regno));
+ fprintf_unfiltered (gdb_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 (gdb_stderr, "target_store_registers (%s) = 0x%x %d\n",
+ REGISTER_NAME (regno),
+ (unsigned long) read_register (regno),
+ (unsigned long) read_register (regno));
+ else
+ fprintf_unfiltered (gdb_stderr, "target_store_registers (%d)\n", regno);
+}
+
+static void
+debug_to_prepare_to_store ()
+{
+ debug_target.to_prepare_to_store ();
+
+ fprintf_unfiltered (gdb_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 (gdb_stderr,
+ "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_stderr);
+ for (i = 0; i < retval; i++)
+ {
+ if ((((long) &(myaddr[i])) & 0xf) == 0)
+ fprintf_unfiltered (gdb_stderr, "\n");
+ fprintf_unfiltered (gdb_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 (gdb_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 (gdb_stderr,
+ "target_insert_breakpoint (0x%x, xxx) = %d\n",
+ (unsigned long) 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 (gdb_stderr,
+ "target_remove_breakpoint (0x%x, xxx) = %d\n",
+ (unsigned long)addr, retval);
+ return retval;
+}
+
+static void
+debug_to_terminal_init ()
+{
+ debug_target.to_terminal_init ();
+
+ fprintf_unfiltered (gdb_stderr, "target_terminal_init ()\n");
+}
+
+static void
+debug_to_terminal_inferior ()
+{
+ debug_target.to_terminal_inferior ();
+
+ fprintf_unfiltered (gdb_stderr, "target_terminal_inferior ()\n");
+}
+
+static void
+debug_to_terminal_ours_for_output ()
+{
+ debug_target.to_terminal_ours_for_output ();
+
+ fprintf_unfiltered (gdb_stderr, "target_terminal_ours_for_output ()\n");
+}
+
+static void
+debug_to_terminal_ours ()
+{
+ debug_target.to_terminal_ours ();
+
+ fprintf_unfiltered (gdb_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 (gdb_stderr, "target_terminal_info (%s, %d)\n", arg,
+ from_tty);
+}
+
+static void
+debug_to_kill ()
+{
+ debug_target.to_kill ();
+
+ fprintf_unfiltered (gdb_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 (gdb_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 (gdb_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 (gdb_stderr, "target_create_inferior (%s, %s, xxx)\n",
+ exec_file, args);
+}
+
+static void
+debug_to_post_startup_inferior (pid)
+ int pid;
+{
+ debug_target.to_post_startup_inferior (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_post_startup_inferior (%d)\n",
+ pid);
+}
+
+static void
+debug_to_acknowledge_created_inferior (pid)
+ int pid;
+{
+ debug_target.to_acknowledge_created_inferior (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_acknowledge_created_inferior (%d)\n",
+ pid);
+}
+
+static void
+debug_to_clone_and_follow_inferior (child_pid, followed_child)
+ int child_pid;
+ int *followed_child;
+{
+ debug_target.to_clone_and_follow_inferior (child_pid, followed_child);
+
+ fprintf_unfiltered (gdb_stderr,
+ "target_clone_and_follow_inferior (%d, %d)\n",
+ child_pid, *followed_child);
+}
+
+static void
+debug_to_post_follow_inferior_by_clone ()
+{
+ debug_target.to_post_follow_inferior_by_clone ();
+
+ fprintf_unfiltered (gdb_stderr, "target_post_follow_inferior_by_clone ()\n");
+}
+
+static int
+debug_to_insert_fork_catchpoint (pid)
+ int pid;
+{
+ int retval;
+
+ retval = debug_target.to_insert_fork_catchpoint (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_insert_fork_catchpoint (%d) = %d\n",
+ pid, retval);
+
+ return retval;
+}
+
+static int
+debug_to_remove_fork_catchpoint (pid)
+ int pid;
+{
+ int retval;
+
+ retval = debug_target.to_remove_fork_catchpoint (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_remove_fork_catchpoint (%d) = %d\n",
+ pid, retval);
+
+ return retval;
+}
+
+static int
+debug_to_insert_vfork_catchpoint (pid)
+ int pid;
+{
+ int retval;
+
+ retval = debug_target.to_insert_vfork_catchpoint (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_insert_vfork_catchpoint (%d)= %d\n",
+ pid, retval);
+
+ return retval;
+}
+
+static int
+debug_to_remove_vfork_catchpoint (pid)
+ int pid;
+{
+ int retval;
+
+ retval = debug_target.to_remove_vfork_catchpoint (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_remove_vfork_catchpoint (%d) = %d\n",
+ pid, retval);
+
+ return retval;
+}
+
+static int
+debug_to_has_forked (pid, child_pid)
+ int pid;
+ int * child_pid;
+{
+ int has_forked;
+
+ has_forked = debug_target.to_has_forked (pid, child_pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_has_forked (%d, %d) = %d\n",
+ pid, *child_pid, has_forked);
+
+ return has_forked;
+}
+
+static int
+debug_to_has_vforked (pid, child_pid)
+ int pid;
+ int * child_pid;
+{
+ int has_vforked;
+
+ has_vforked = debug_target.to_has_vforked (pid, child_pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_has_vforked (%d, %d) = %d\n",
+ pid, *child_pid, has_vforked);
+
+ return has_vforked;
+}
+
+static int
+debug_to_can_follow_vfork_prior_to_exec ()
+{
+ int can_immediately_follow_vfork;
+
+ can_immediately_follow_vfork = debug_target.to_can_follow_vfork_prior_to_exec ();
+
+ fprintf_unfiltered (gdb_stderr, "target_can_follow_vfork_prior_to_exec () = %d\n",
+ can_immediately_follow_vfork);
+
+ return can_immediately_follow_vfork;
+}
+
+static void
+debug_to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child)
+ int parent_pid;
+ int followed_parent;
+ int child_pid;
+ int followed_child;
+{
+ debug_target.to_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child);
+
+ fprintf_unfiltered (gdb_stderr,
+ "target_post_follow_vfork (%d, %d, %d, %d)\n",
+ parent_pid, followed_parent, child_pid, followed_child);
+}
+
+static int
+debug_to_insert_exec_catchpoint (pid)
+ int pid;
+{
+ int retval;
+
+ retval = debug_target.to_insert_exec_catchpoint (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_insert_exec_catchpoint (%d) = %d\n",
+ pid, retval);
+
+ return retval;
+}
+
+static int
+debug_to_remove_exec_catchpoint (pid)
+ int pid;
+{
+ int retval;
+
+ retval = debug_target.to_remove_exec_catchpoint (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_remove_exec_catchpoint (%d) = %d\n",
+ pid, retval);
+
+ return retval;
+}
+
+static int
+debug_to_has_execd (pid, execd_pathname)
+ int pid;
+ char ** execd_pathname;
+{
+ int has_execd;
+
+ has_execd = debug_target.to_has_execd (pid, execd_pathname);
+
+ fprintf_unfiltered (gdb_stderr, "target_has_execd (%d, %s) = %d\n",
+ pid, *execd_pathname, has_execd);
+
+ return has_execd;
+}
+
+static int
+debug_to_reported_exec_events_per_exec_call ()
+{
+ int reported_exec_events;
+
+ reported_exec_events = debug_target.to_reported_exec_events_per_exec_call ();
+
+ fprintf_unfiltered (gdb_stderr,
+ "target_reported_exec_events_per_exec_call () = %d\n",
+ reported_exec_events);
+
+ return reported_exec_events;
+}
+
+static int
+debug_to_has_syscall_event (pid, kind, syscall_id)
+ int pid;
+ enum target_waitkind * kind;
+ int * syscall_id;
+{
+ int has_syscall_event;
+ char * kind_spelling = "??";
+
+ has_syscall_event = debug_target.to_has_syscall_event (pid, kind, syscall_id);
+ if (has_syscall_event)
+ {
+ switch (*kind)
+ {
+ case TARGET_WAITKIND_SYSCALL_ENTRY:
+ kind_spelling = "SYSCALL_ENTRY";
+ break;
+ case TARGET_WAITKIND_SYSCALL_RETURN:
+ kind_spelling = "SYSCALL_RETURN";
+ break;
+ default:
+ break;
+ }
+ }
+
+ fprintf_unfiltered (gdb_stderr,
+ "target_has_syscall_event (%d, %s, %d) = %d\n",
+ pid, kind_spelling, *syscall_id, has_syscall_event);
+
+ return has_syscall_event;
+}
+
+static int
+debug_to_has_exited (pid, wait_status, exit_status)
+ 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_stderr, "target_has_exited (%d, %d, %d) = %d\n",
+ pid, wait_status, *exit_status, has_exited);
+
+ return has_exited;
+}
+
+static void
+debug_to_mourn_inferior ()
+{
+ debug_target.to_mourn_inferior ();
+
+ fprintf_unfiltered (gdb_stderr, "target_mourn_inferior ()\n");
+}
+
+static int
+debug_to_can_run ()
+{
+ int retval;
+
+ retval = debug_target.to_can_run ();
+
+ fprintf_unfiltered (gdb_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 (gdb_stderr, "target_notice_signals (%d)\n", pid);
+}
+
+static int
+debug_to_thread_alive (pid)
+ int pid;
+{
+ int retval;
+
+ retval = debug_target.to_thread_alive (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_thread_alive (%d) = %d\n",
+ pid, retval);
+
+ return retval;
+}
+
+static void
+debug_to_stop ()
+{
+ debug_target.to_stop ();
+
+ fprintf_unfiltered (gdb_stderr, "target_stop ()\n");
+}
+
+static int
+debug_to_query (type, req, resp, siz)
+ int type;
+ char *req;
+ char *resp;
+ int *siz;
+{
+ int retval;
+
+ retval = debug_target.to_query (type, req, resp, siz);
+
+ fprintf_unfiltered (gdb_stderr, "target_query (%c, %s, %s, %d) = %d\n", type, req, resp, *siz, retval);
+
+ return retval;
+}
+
+static struct symtab_and_line *
+debug_to_enable_exception_callback (kind, enable)
+ enum exception_event_kind kind;
+ int enable;
+{
+ debug_target.to_enable_exception_callback (kind, enable);
+
+ fprintf_unfiltered (gdb_stderr,
+ "target get_exception_callback_sal (%d, %d)\n",
+ kind, enable);
+}
+
+static struct exception_event_record *
+debug_to_get_current_exception_event ()
+{
+ debug_target.to_get_current_exception_event();
+
+ fprintf_unfiltered (gdb_stderr, "target get_current_exception_event ()\n");
+}
+
+static char *
+debug_to_pid_to_exec_file (pid)
+ int pid;
+{
+ char * exec_file;
+
+ exec_file = debug_target.to_pid_to_exec_file (pid);
+
+ fprintf_unfiltered (gdb_stderr, "target_pid_to_exec_file (%d) = %s\n",
+ pid, exec_file);
+
+ return exec_file;
+}
+
+static char *
+debug_to_core_file_to_sym_file (core)
+ char * core;
+{
+ char * sym_file;
+
+ sym_file = debug_target.to_core_file_to_sym_file (core);
+
+ fprintf_unfiltered (gdb_stderr, "target_core_file_to_sym_file (%s) = %s\n",
+ core, sym_file);
+
+ return sym_file;
+}
+
+static void
+setup_target_debug ()
+{
+ memcpy (&debug_target, &current_target, sizeof debug_target);
+
+ current_target.to_open = debug_to_open;
+ current_target.to_close = debug_to_close;
+ current_target.to_attach = debug_to_attach;
+ current_target.to_post_attach = debug_to_post_attach;
+ current_target.to_require_attach = debug_to_require_attach;
+ current_target.to_detach = debug_to_detach;
+ current_target.to_require_detach = debug_to_require_detach;
+ current_target.to_resume = debug_to_resume;
+ current_target.to_wait = debug_to_wait;
+ current_target.to_post_wait = debug_to_post_wait;
+ current_target.to_fetch_registers = debug_to_fetch_registers;
+ current_target.to_store_registers = debug_to_store_registers;
+ current_target.to_prepare_to_store = debug_to_prepare_to_store;
+ current_target.to_xfer_memory = debug_to_xfer_memory;
+ current_target.to_files_info = debug_to_files_info;
+ current_target.to_insert_breakpoint = debug_to_insert_breakpoint;
+ current_target.to_remove_breakpoint = debug_to_remove_breakpoint;
+ current_target.to_terminal_init = debug_to_terminal_init;
+ current_target.to_terminal_inferior = debug_to_terminal_inferior;
+ current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output;
+ current_target.to_terminal_ours = debug_to_terminal_ours;
+ current_target.to_terminal_info = debug_to_terminal_info;
+ current_target.to_kill = debug_to_kill;
+ current_target.to_load = debug_to_load;
+ current_target.to_lookup_symbol = debug_to_lookup_symbol;
+ current_target.to_create_inferior = debug_to_create_inferior;
+ current_target.to_post_startup_inferior = debug_to_post_startup_inferior;
+ current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior;
+ current_target.to_clone_and_follow_inferior = debug_to_clone_and_follow_inferior;
+ current_target.to_post_follow_inferior_by_clone = debug_to_post_follow_inferior_by_clone;
+ current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint;
+ current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint;
+ current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint;
+ current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint;
+ current_target.to_has_forked = debug_to_has_forked;
+ current_target.to_has_vforked = debug_to_has_vforked;
+ current_target.to_can_follow_vfork_prior_to_exec = debug_to_can_follow_vfork_prior_to_exec;
+ current_target.to_post_follow_vfork = debug_to_post_follow_vfork;
+ current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint;
+ current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint;
+ current_target.to_has_execd = debug_to_has_execd;
+ current_target.to_reported_exec_events_per_exec_call = debug_to_reported_exec_events_per_exec_call;
+ current_target.to_has_syscall_event = debug_to_has_syscall_event;
+ current_target.to_has_exited = debug_to_has_exited;
+ current_target.to_mourn_inferior = debug_to_mourn_inferior;
+ current_target.to_can_run = debug_to_can_run;
+ current_target.to_notice_signals = debug_to_notice_signals;
+ current_target.to_thread_alive = debug_to_thread_alive;
+ current_target.to_stop = debug_to_stop;
+ current_target.to_query = debug_to_query;
+ current_target.to_enable_exception_callback = debug_to_enable_exception_callback;
+ current_target.to_get_current_exception_event = debug_to_get_current_exception_event;
+ current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file;
+ current_target.to_core_file_to_sym_file = debug_to_core_file_to_sym_file;
+
+}
+#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 ()
+{
+ init_dummy_target ();
+ 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 ();
+}
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