/* Select target systems and architectures at runtime for GDB.
- Copyright 1990, 1992, 1993, 1994 Free Software Foundation, Inc.
+ Copyright 1990, 1992, 1993, 1994, 1995, 1998 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 "defs.h"
#include <errno.h>
#include <ctype.h>
+#include "gdb_string.h"
#include "target.h"
#include "gdbcmd.h"
#include "symtab.h"
tcomplain PARAMS ((void));
static int
-nomemory PARAMS ((CORE_ADDR, char *, int, int));
+nomemory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *));
static int
return_zero PARAMS ((void));
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
+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));
+
/* Pointer to array of target architecture structures; the size of the
array; the current index into the array; the allocated size of the
array. */
/* The initial current target, so that there is always a semi-valid
current target. */
-struct target_ops dummy_target = {"None", "None", "",
- 0, 0, /* open, close */
- find_default_attach, 0, /* attach, detach */
- 0, 0, /* resume, wait */
- 0, 0, 0, /* registers */
- 0, 0, /* memory */
- 0, 0, /* bkpts */
- 0, 0, 0, 0, 0, /* terminal */
- 0, 0, /* kill, load */
- 0, /* lookup_symbol */
- find_default_create_inferior, /* create_inferior */
- 0, /* mourn_inferior */
- 0, /* can_run */
- 0, /* notice_signals */
- 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_has_all_memory */
+ 0, /* to_has_memory */
+ 0, /* to_has_stack */
+ 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. */
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 */
add_target (t)
struct target_ops *t;
{
- if (t->to_magic != OPS_MAGIC)
- {
- fprintf_unfiltered(gdb_stderr, "Magic number of %s target struct wrong\n",
- t->to_shortname);
- abort();
- }
-
if (!target_structs)
{
target_struct_allocsize = DEFAULT_ALLOCSIZE;
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);
}
void
printf_unfiltered("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();
-}
-#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 this function returns without calling error(), it has killed off
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_unfiltered(gdb_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, (void (*)())tcomplain);
- de_fault (to_close, (void (*)())ignore);
+ de_fault (to_open, (void (*) PARAMS((char *, int))) tcomplain);
+ de_fault (to_close, (void (*) PARAMS((int))) 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, (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_xfer_memory, (int (*)())nomemory);
- de_fault (to_files_info, (void (*)())ignore);
+ de_fault (to_detach, (void (*) PARAMS((char *, int))) 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_fetch_registers, (void (*) PARAMS((int))) 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 *))) 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_inferior, ignore);
- de_fault (to_terminal_ours_for_output,ignore);
- de_fault (to_terminal_ours, ignore);
+ de_fault (to_terminal_init, (void (*) PARAMS((void))) ignore);
+ de_fault (to_terminal_inferior, (void (*) PARAMS ((void))) ignore);
+ de_fault (to_terminal_ours_for_output,(void (*) PARAMS ((void))) ignore);
+ de_fault (to_terminal_ours, (void (*) PARAMS ((void))) ignore);
de_fault (to_terminal_info, default_terminal_info);
- de_fault (to_kill, (void (*)())noprocess);
- de_fault (to_load, (void (*)())tcomplain);
- de_fault (to_lookup_symbol, nosymbol);
+ 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_mourn_inferior, (void (*)())noprocess);
+ de_fault (to_mourn_inferior, (void (*) PARAMS((void))) noprocess);
de_fault (to_can_run, return_zero);
- de_fault (to_notice_signals, (void (*)())ignore);
- 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_notice_signals, (void (*) PARAMS((int))) ignore);
+ de_fault (to_thread_alive, (int (*) PARAMS((int))) ignore);
+ de_fault (to_stop, (void (*) PARAMS((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 0
- /* This will dump core if ever called--push_target expects current_target
- to be non-NULL. But I don't think it's needed; I don't see how the
- dummy_target could ever be removed from the stack. */
- if (!current_target) /* At bottom, push dummy. */
- push_target (&dummy_target);
-#endif
+ (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
tlen = MIN (len, 4 - (memaddr & 3));
offset = memaddr & 3;
- errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0);
+ errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0, NULL);
if (errcode != 0)
- goto done;
+ {
+ /* 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)
{
char *myaddr;
int len;
{
- return target_xfer_memory (memaddr, myaddr, len, 0);
+ 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
int errcode; /* Error from last read. */
/* First try a complete read. */
- errcode = target_xfer_memory (memaddr, myaddr, len, 0);
+ errcode = target_xfer_memory (memaddr, myaddr, len, 0, NULL);
if (errcode == 0)
{
/* Got it all. */
/* 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);
+ errcode = target_xfer_memory (memaddr++, myaddr++, 1, 0, NULL);
}
/* If an error, the last read was unsuccessful, so adjust count. */
if (errcode != 0)
char *myaddr;
int len;
{
- return target_xfer_memory (memaddr, myaddr, len, 1);
+ 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
Result is 0 or errno value. */
-int
-target_xfer_memory (memaddr, myaddr, len, write)
+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);
+ 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,
int from_tty;
{
struct target_ops *t;
+ struct target_stack_item *item;
int has_all_mem = 0;
if (symfile_objfile != NULL)
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_unfiltered("\tWhile running this, gdb does not access memory from...\n");
+ 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;
#ifdef DO_DEFERRED_STORES
DO_DEFERRED_STORES;
#endif
- (current_target->to_detach) (args, from_tty);
+ (current_target.to_detach) (args, from_tty);
}
void
char *modname;
CORE_ADDR *t_reloc;
{
- if (STREQ(current_target->to_shortname, "rombug"))
+ if (STREQ(current_target.to_shortname, "rombug"))
{
- (current_target->to_lookup_symbol) (modname, t_reloc);
+ (current_target.to_lookup_symbol) (modname, t_reloc);
if (*t_reloc == 0)
error("Unable to link to %s and get relocation in rombug", modname);
}
for (t = target_structs; t < target_structs + target_struct_size;
++t)
{
- if (target_can_run(*t))
+ if ((*t)->to_can_run && target_can_run(*t))
{
runable = *t;
++count;
void
generic_mourn_inferior ()
{
+ extern int show_breakpoint_hit_counts;
+
inferior_pid = 0;
attach_flag = 0;
breakpoint_init_inferior ();
/* It is confusing to the user for ignore counts to stick around
from previous runs of the inferior. So clear them. */
- breakpoint_clear_ignore_counts ();
+ /* 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
{"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"},
#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;
}
#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",
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. */
{
static char buf[30];
- sprintf (buf, "process %d", pid);
+ 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",
+ (unsigned long) 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],
+ (unsigned long) read_register (regno),
+ (unsigned long) 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",
+ (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 (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",
+ (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 (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 (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 ()
+initialize_targets ()
{
- current_target = &dummy_target;
- cleanup_target (current_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 ();
}
projects / deliverable / binutils-gdb.git / blobdiff