/* Select target systems and architectures at runtime for GDB.
- Copyright 1990, 1992 Free Software Foundation, Inc.
+ Copyright 1990, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-#include <stdio.h>
+#include "defs.h"
#include <errno.h>
#include <ctype.h>
-#include "defs.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;
-extern int memory_insert_breakpoint(), memory_remove_breakpoint();
-extern void host_convert_to_virtual(), host_convert_from_virtual();
+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
+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 void
+ignore PARAMS ((void));
+
+static void
+target_command PARAMS ((char *, int));
-static void cleanup_target ();
+static struct target_ops *
+find_default_run_target PARAMS ((char *));
/* Pointer to array of target architecture structures; the size of the
array; the current index into the array; the allocated size of the
/* The initial current target, so that there is always a semi-valid
current target. */
-struct target_ops dummy_target = {"None", "None", "",
- 0, 0, 0, 0, /* open, close, attach, detach */
- 0, 0, /* resume, wait */
- 0, 0, 0, 0, 0, /* registers */
- 0, 0, /* memory */
- 0, 0, /* bkpts */
- 0, 0, 0, 0, 0, /* terminal */
- 0, 0, /* kill, load */
- 0, /* lookup_symbol */
- 0, 0, /* create_inferior, mourn_inferior */
- dummy_stratum, 0, /* stratum, next */
- 0, 0, 0, 0, 0, /* all mem, mem, stack, regs, exec */
- 0, 0, /* section pointers */
- OPS_MAGIC,
+struct target_ops dummy_target = {
+ "None", /* to_shortname */
+ "None", /* to_longname */
+ "", /* to_doc */
+ 0, /* to_open */
+ 0, /* to_close */
+ find_default_attach, /* to_attach */
+ 0, /* to_detach */
+ 0, /* to_resume */
+ 0, /* to_wait */
+ 0, /* to_fetch_registers */
+ 0, /* to_store_registers */
+ 0, /* to_prepare_to_store */
+ 0, /* to_xfer_memory */
+ 0, /* to_files_info */
+ 0, /* to_insert_breakpoint */
+ 0, /* to_remove_breakpoint */
+ 0, /* to_terminal_init */
+ 0, /* to_terminal_inferior */
+ 0, /* to_terminal_ours_for_output */
+ 0, /* to_terminal_ours */
+ 0, /* to_terminal_info */
+ 0, /* to_kill */
+ 0, /* to_load */
+ 0, /* to_lookup_symbol */
+ find_default_create_inferior, /* to_create_inferior */
+ 0, /* to_mourn_inferior */
+ 0, /* to_can_run */
+ 0, /* to_notice_signals */
+ 0, /* to_thread_alive */
+ 0, /* to_stop */
+ dummy_stratum, /* to_stratum */
+ 0, /* to_next */
+ 0, /* to_next */
+ 0, /* to_has_all_memory */
+ 0, /* to_has_memory */
+ 0, /* to_has_registers */
+ 0, /* to_has_execution */
+ 0, /* to_sections */
+ 0, /* to_sections_end */
+ OPS_MAGIC, /* to_magic */
};
-/* The target structure we are currently using to talk to a process
- or file or whatever "inferior" we have. */
+/* Top of target stack. */
-struct target_ops *current_target;
+struct target_stack_item *target_stack;
-/* The stack of target structures that have been pushed. */
+/* The target structure we are currently using to talk to a process
+ or file or whatever "inferior" we have. */
-struct target_ops **current_target_stack;
+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 */
char *arg;
int from_tty;
{
- fputs_filtered ("Argument required (target name).\n", stdout);
+ fputs_filtered ("Argument required (target name). Try `help target'\n",
+ gdb_stdout);
}
/* Add a possible target architecture to the list. */
add_target (t)
struct target_ops *t;
{
- if (t->to_magic != OPS_MAGIC)
- {
- fprintf(stderr, "Magic number of %s target struct wrong\n",
- t->to_shortname);
- abort();
- }
-
if (!target_structs)
{
target_struct_allocsize = DEFAULT_ALLOCSIZE;
if (target_struct_size >= target_struct_allocsize)
{
target_struct_allocsize *= 2;
- target_structs = (struct target_ops **) xrealloc (target_structs,
- target_struct_allocsize * sizeof (*target_structs));
+ target_structs = (struct target_ops **)
+ xrealloc ((char *) target_structs,
+ target_struct_allocsize * sizeof (*target_structs));
}
target_structs[target_struct_size++] = t;
- cleanup_target (t);
+/* cleanup_target (t);*/
if (targetlist == NULL)
add_prefix_cmd ("target", class_run, target_command,
/* ARGSUSED */
static int
-nomemory (memaddr, myaddr, len, write)
+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 */
}
tcomplain ()
{
error ("You can't do that when your target is `%s'",
- current_target->to_shortname);
+ current_target.to_shortname);
}
-static int
+void
noprocess ()
{
error ("You can't do that without a process to debug");
char *args;
int from_tty;
{
- printf("No saved terminal information.\n");
-}
-
-#if 0
-/* With strata, this function is no longer needed. FIXME. */
-/* This is the default target_create_inferior function. It looks up
- the stack for some target that cares to create inferiors, then
- calls it -- or complains if not found. */
-
-static void
-upstack_create_inferior (exec, args, env)
- char *exec;
- char *args;
- char **env;
-{
- struct target_ops *t;
-
- for (t = current_target;
- t;
- t = t->to_next)
- {
- if (t->to_create_inferior != upstack_create_inferior)
- {
- t->to_create_inferior (exec, args, env);
- return;
- }
-
- }
- tcomplain();
+ printf_unfiltered("No saved terminal information.\n");
}
-#endif
/* 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 (target_has_execution)
{
- printf ("You are already running a program:\n");
+ printf_unfiltered ("You are already running a program:\n");
target_files_info ();
if (query ("Kill it? ")) {
target_kill ();
struct target_ops *t;
{
- /* 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(stderr, "Magic number of %s target struct wrong\n",
- t->to_shortname);
- abort();
- }
-
#define de_fault(field, value) \
if (!t->field) t->field = value
/* FIELD DEFAULT VALUE */
- de_fault (to_open, tcomplain);
+ de_fault (to_open, (void (*)())tcomplain);
de_fault (to_close, (void (*)())ignore);
de_fault (to_attach, maybe_kill_then_attach);
de_fault (to_detach, (void (*)())ignore);
de_fault (to_resume, (void (*)())noprocess);
- de_fault (to_wait, noprocess);
- de_fault (to_fetch_registers, ignore);
+ de_fault (to_wait, (int (*)())noprocess);
+ de_fault (to_fetch_registers, (void (*)())ignore);
de_fault (to_store_registers, (void (*)())noprocess);
de_fault (to_prepare_to_store, (void (*)())noprocess);
- de_fault (to_convert_to_virtual, host_convert_to_virtual);
- de_fault (to_convert_from_virtual, host_convert_from_virtual);
- de_fault (to_xfer_memory, nomemory);
- de_fault (to_files_info, ignore);
+ de_fault (to_xfer_memory, (int (*)())nomemory);
+ de_fault (to_files_info, (void (*)())ignore);
de_fault (to_insert_breakpoint, memory_insert_breakpoint);
de_fault (to_remove_breakpoint, memory_remove_breakpoint);
de_fault (to_terminal_init, ignore);
de_fault (to_terminal_ours, ignore);
de_fault (to_terminal_info, default_terminal_info);
de_fault (to_kill, (void (*)())noprocess);
- de_fault (to_load, tcomplain);
+ de_fault (to_load, (void (*)())tcomplain);
de_fault (to_lookup_symbol, nosymbol);
de_fault (to_create_inferior, maybe_kill_then_create_inferior);
de_fault (to_mourn_inferior, (void (*)())noprocess);
- de_fault (to_next, 0);
- de_fault (to_has_all_memory, 0);
- de_fault (to_has_memory, 0);
- de_fault (to_has_stack, 0);
- de_fault (to_has_registers, 0);
- de_fault (to_has_execution, 0);
+ de_fault (to_can_run, return_zero);
+ de_fault (to_notice_signals, (void (*)())ignore);
+ de_fault (to_thread_alive, (int (*)())ignore);
+ de_fault (to_stop, (void (*)())ignore);
#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 (¤t_target, 0, sizeof current_target);
+
+ for (item = target_stack; item; item = item->next)
+ {
+ t = item->target_ops;
+
+#define INHERIT(FIELD, TARGET) \
+ if (!current_target.FIELD) \
+ current_target.FIELD = TARGET->FIELD
+
+ INHERIT (to_shortname, t);
+ INHERIT (to_longname, t);
+ INHERIT (to_doc, t);
+ INHERIT (to_open, t);
+ INHERIT (to_close, t);
+ INHERIT (to_attach, t);
+ INHERIT (to_detach, t);
+ INHERIT (to_resume, t);
+ INHERIT (to_wait, t);
+ INHERIT (to_fetch_registers, t);
+ INHERIT (to_store_registers, t);
+ INHERIT (to_prepare_to_store, t);
+ INHERIT (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_mourn_inferior, t);
+ INHERIT (to_can_run, t);
+ INHERIT (to_notice_signals, t);
+ INHERIT (to_thread_alive, t);
+ INHERIT (to_stop, 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_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.
push_target (t)
struct target_ops *t;
{
- struct target_ops *st, *prev;
+ 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;
- for (prev = 0, st = current_target;
- st;
- prev = st, st = st->to_next) {
- if ((int)(t->to_stratum) >= (int)(st->to_stratum))
- break;
- }
-
- while (t->to_stratum == st->to_stratum) {
- /* There's already something on this stratum. Close it off. */
- (st->to_close) (0);
- if (prev)
- prev->to_next = st->to_next; /* Unchain old target_ops */
- else
- current_target = st->to_next; /* Unchain first on list */
- st = st->to_next;
- }
-
- /* We have removed all targets in our stratum, now add ourself. */
- t->to_next = st;
if (prev)
- prev->to_next = t;
+ prev->next = tmp;
else
- current_target = t;
+ target_stack = tmp;
+
+ update_current_target ();
+
+ cleanup_target (¤t_target); /* Fill in the gaps */
+
+#ifdef MAINTENANCE_CMDS
+ if (targetdebug)
+ setup_target_debug ();
+#endif
- cleanup_target (current_target);
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 unless bug). */
+ Return how many times it was removed (0 or 1). */
int
unpush_target (t)
struct target_ops *t;
{
- struct target_ops *u, *v;
- int result = 0;
+ struct target_stack_item *cur, *prev;
- for (u = current_target, v = 0;
- u;
- v = u, u = u->to_next)
- if (u == t)
- {
- if (v == 0)
- pop_target(); /* unchain top copy */
- else {
- (t->to_close)(0); /* Let it clean up */
- v->to_next = t->to_next; /* unchain middle copy */
- }
- result++;
- }
- return result;
+ 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 */
- current_target = current_target->to_next;
- if (!current_target) /* At bottom, push dummy. */
- push_target (&dummy_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 from MEMADDR in target.
- The read may also be terminated early by getting an error from target_xfer_
- memory.
- LEN is the size of the buffer pointed to by MYADDR. Note that a terminating
- null will only be written if there is sufficient room. The return value is
- is the number of bytes (including the null) actually transferred.
-*/
+/* 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, myaddr, len)
+target_read_string (memaddr, string, len, errnop)
CORE_ADDR memaddr;
- char *myaddr;
+ 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;
tlen = MIN (len, 4 - (memaddr & 3));
offset = memaddr & 3;
- if (target_xfer_memory (memaddr & ~3, buf, 4, 0))
- return origlen - len;
+ 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++)
{
- *myaddr++ = buf[i + offset];
+ *bufptr++ = buf[i + offset];
if (buf[i + offset] == '\000')
- return (origlen - len) + i + 1;
+ {
+ nbytes_read += i + 1;
+ goto done;
+ }
}
memaddr += tlen;
len -= tlen;
+ nbytes_read += tlen;
}
- return origlen;
+ done:
+ if (errnop != NULL)
+ *errnop = errcode;
+ if (string != NULL)
+ *string = buffer;
+ return nbytes_read;
}
-/* 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.
+/* 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.
- Result is 0 or errno value. */
+ 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)
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;
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;
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, current_target);
+ res = current_target.to_xfer_memory
+ (memaddr, myaddr, len, write, ¤t_target);
if (res == len)
return 0;
for (; len > 0;)
{
curlen = len; /* Want to do it all */
- for (t = current_target;
- t;
- t = t->to_has_all_memory? 0: t->to_next)
+ for (item = target_stack; item; item = item->next)
{
- res = t->to_xfer_memory(memaddr, myaddr, curlen, write, t);
- if (res > 0) break; /* Handled all or part of xfer */
- if (res == 0) continue; /* Handled none */
- curlen = -res; /* Could handle once we get past res bytes */
+ 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)
- bzero (myaddr, len);
+ memset (myaddr, 0, len);
if (errno == 0)
return EIO;
else
int from_tty;
{
struct target_ops *t;
+ struct target_stack_item *item;
int has_all_mem = 0;
- if (symfile_objfile != 0)
- printf ("Symbols from \"%s\".\n", symfile_objfile->name);
+ if (symfile_objfile != NULL)
+ printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name);
#ifdef FILES_INFO_HOOK
if (FILES_INFO_HOOK ())
return;
#endif
- for (t = current_target;
- t;
- t = t->to_next)
+ 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("\tWhile running this, gdb does not access memory from...\n");
- printf("%s:\n", t->to_longname);
+ 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;
}
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 ();
}
-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.";
+/* 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
-_initialize_targets ()
+target_link (modname, t_reloc)
+ char *modname;
+ CORE_ADDR *t_reloc;
{
- current_target = &dummy_target;
- cleanup_target (current_target);
+ 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;
+}
- add_info ("target", target_info, targ_desc);
- add_info ("files", target_info, targ_desc);
+/* 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);
+}
+\f
+/* 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 ();
+}
+\f
+/* 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"},
+
+ /* 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"},
+
+ {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;
+}
+\f
+/* 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));
+ }
+}
+\f
+/* 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.");
+}
+\f
+/* Returns zero to leave the inferior alone, one to interrupt it. */
+int (*target_activity_function) PARAMS ((void));
+int target_activity_fd;
+\f
+/* 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;
+}
+\f
+#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++)
+ {
+ if ((((long) &(myaddr[i])) & 0xf) == 0)
+ fprintf_unfiltered (stderr, "\n");
+ 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;
+{
+ int retval;
+
+ retval = debug_target.to_thread_alive (pid);
+
+ fprintf_unfiltered (stderr, "target_thread_alive (%d) = %d\n", pid, retval);
+
+ return retval;
+}
+
+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 */
+\f
+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 ();
}
projects / binutils.git / blobdiff