4641 lines
114 KiB
C
4641 lines
114 KiB
C
/* Interface GDB to Mach 3.0 operating systems.
|
||
(Most) Mach 3.0 related routines live in this file.
|
||
|
||
Copyright (C) 1992 Free Software Foundation, Inc.
|
||
|
||
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. */
|
||
|
||
/*
|
||
* Author: Jukka Virtanen <jtv@hut.fi>
|
||
* Computing Centre
|
||
* Helsinki University of Technology
|
||
* Finland
|
||
*
|
||
* Thanks to my friends who helped with ideas and testing:
|
||
*
|
||
* Johannes Helander, Antti Louko, Tero Mononen,
|
||
* jvh@cs.hut.fi alo@hut.fi tmo@cs.hut.fi
|
||
*
|
||
* Tero Kivinen and Eamonn McManus
|
||
* kivinen@cs.hut.fi emcmanus@gr.osf.org
|
||
*
|
||
*/
|
||
|
||
#include <stdio.h>
|
||
|
||
#include <mach.h>
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||
#include <servers/netname.h>
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||
#include <servers/machid.h>
|
||
#include <mach/message.h>
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||
#include <mach/notify.h>
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||
#include <mach_error.h>
|
||
#include <mach/exception.h>
|
||
#include <mach/vm_attributes.h>
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||
|
||
#include "defs.h"
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||
#include "inferior.h"
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||
#include "symtab.h"
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||
#include "value.h"
|
||
#include "language.h"
|
||
#include "target.h"
|
||
#include "wait.h"
|
||
#include "gdbcmd.h"
|
||
#include "gdbcore.h"
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||
|
||
#if 0
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||
#include <servers/machid_lib.h>
|
||
#else
|
||
#define MACH_TYPE_TASK 1
|
||
#define MACH_TYPE_THREAD 2
|
||
#endif
|
||
|
||
/* Included only for signal names and NSIG
|
||
*
|
||
* note: There are many problems in signal handling with
|
||
* gdb in Mach 3.0 in general.
|
||
*/
|
||
#include <signal.h>
|
||
#define SIG_UNKNOWN 0 /* Exception that has no matching unix signal */
|
||
|
||
#include <cthreads.h>
|
||
|
||
/* This is what a cproc looks like. This is here partly because
|
||
cthread_internals.h is not a header we can just #include, partly with
|
||
an eye towards perhaps getting this to work with cross-debugging
|
||
someday. Best solution is if CMU publishes a real interface to this
|
||
stuff. */
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||
#define CPROC_NEXT_OFFSET 0
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||
#define CPROC_NEXT_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT)
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||
#define CPROC_INCARNATION_OFFSET (CPROC_NEXT_OFFSET + CPROC_NEXT_SIZE)
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||
#define CPROC_INCARNATION_SIZE (sizeof (cthread_t))
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||
#define CPROC_LIST_OFFSET (CPROC_INCARNATION_OFFSET + CPROC_INCARNATION_SIZE)
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||
#define CPROC_LIST_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT)
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||
#define CPROC_WAIT_OFFSET (CPROC_LIST_OFFSET + CPROC_LIST_SIZE)
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||
#define CPROC_WAIT_SIZE (TARGET_PTR_BIT / HOST_CHAR_BIT)
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||
#define CPROC_REPLY_OFFSET (CPROC_WAIT_OFFSET + CPROC_WAIT_SIZE)
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||
#define CPROC_REPLY_SIZE (sizeof (mach_port_t))
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||
#define CPROC_CONTEXT_OFFSET (CPROC_REPLY_OFFSET + CPROC_REPLY_SIZE)
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||
#define CPROC_CONTEXT_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
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||
#define CPROC_LOCK_OFFSET (CPROC_CONTEXT_OFFSET + CPROC_CONTEXT_SIZE)
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||
#define CPROC_LOCK_SIZE (sizeof (spin_lock_t))
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||
#define CPROC_STATE_OFFSET (CPROC_LOCK_OFFSET + CPROC_LOCK_SIZE)
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||
#define CPROC_STATE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
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||
#define CPROC_WIRED_OFFSET (CPROC_STATE_OFFSET + CPROC_STATE_SIZE)
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||
#define CPROC_WIRED_SIZE (sizeof (mach_port_t))
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||
#define CPROC_BUSY_OFFSET (CPROC_WIRED_OFFSET + CPROC_WIRED_SIZE)
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||
#define CPROC_BUSY_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
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||
#define CPROC_MSG_OFFSET (CPROC_BUSY_OFFSET + CPROC_BUSY_SIZE)
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||
#define CPROC_MSG_SIZE (sizeof (mach_msg_header_t))
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||
#define CPROC_BASE_OFFSET (CPROC_MSG_OFFSET + CPROC_MSG_SIZE)
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||
#define CPROC_BASE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
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||
#define CPROC_SIZE_OFFSET (CPROC_BASE_OFFSET + CPROC_BASE_SIZE)
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||
#define CPROC_SIZE_SIZE (TARGET_INT_BIT / HOST_CHAR_BIT)
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||
#define CPROC_SIZE (CPROC_SIZE_OFFSET + CPROC_SIZE_SIZE)
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||
|
||
/* Values for the state field in the cproc. */
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||
#define CPROC_RUNNING 0
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||
#define CPROC_SWITCHING 1
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||
#define CPROC_BLOCKED 2
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||
#define CPROC_CONDWAIT 4
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||
|
||
/* For cproc and kernel thread mapping */
|
||
typedef struct gdb_thread {
|
||
mach_port_t name;
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||
CORE_ADDR sp;
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||
CORE_ADDR pc;
|
||
CORE_ADDR fp;
|
||
boolean_t in_emulator;
|
||
int slotid;
|
||
|
||
/* This is for the mthreads list. It points to the cproc list.
|
||
Perhaps the two lists should be merged (or perhaps it was a mistake
|
||
to make them both use a struct gdb_thread). */
|
||
struct gdb_thread *cproc;
|
||
|
||
/* These are for the cproc list, which is linked through the next field
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||
of the struct gdb_thread. */
|
||
char raw_cproc[CPROC_SIZE];
|
||
/* The cthread which is pointed to by the incarnation field from the
|
||
cproc. This points to the copy we've read into GDB. */
|
||
cthread_t cthread;
|
||
/* Point back to the mthreads list. */
|
||
int reverse_map;
|
||
struct gdb_thread *next;
|
||
} *gdb_thread_t;
|
||
|
||
/*
|
||
* Actions for Mach exceptions.
|
||
*
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||
* sigmap field maps the exception to corresponding Unix signal.
|
||
*
|
||
* I do not know how to map the exception to unix signal
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||
* if SIG_UNKNOWN is specified.
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||
*/
|
||
|
||
struct exception_list {
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||
char *name;
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||
boolean_t forward;
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||
boolean_t print;
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||
int sigmap;
|
||
} exception_map[] = {
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||
{"not_mach3_exception", FALSE, TRUE, SIG_UNKNOWN},
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||
{"EXC_BAD_ACCESS", FALSE, TRUE, SIGSEGV},
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||
{"EXC_BAD_INSTRUCTION", FALSE, TRUE, SIGILL},
|
||
{"EXC_ARITHMETIC", FALSE, TRUE, SIGFPE},
|
||
{"EXC_EMULATION", FALSE, TRUE, SIGEMT}, /* ??? */
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||
{"EXC_SOFTWARE", FALSE, TRUE, SIG_UNKNOWN},
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||
{"EXC_BREAKPOINT", FALSE, FALSE, SIGTRAP}
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||
};
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||
|
||
/* Mach exception table size */
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||
int max_exception = sizeof(exception_map)/sizeof(struct exception_list) - 1;
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||
|
||
#define MAX_EXCEPTION max_exception
|
||
|
||
WAITTYPE wait_status;
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||
|
||
/* If you define this, intercepted bsd server calls will be
|
||
* dumped while waiting the inferior to EXEC the correct
|
||
* program
|
||
*/
|
||
/* #define DUMP_SYSCALL /* debugging interceptor */
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||
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||
/* xx_debug() outputs messages if this is nonzero.
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||
* If > 1, DUMP_SYSCALL will dump message contents.
|
||
*/
|
||
int debug_level = 0;
|
||
|
||
/* "Temporary" debug stuff */
|
||
void
|
||
xx_debug (fmt, a,b,c)
|
||
char *fmt;
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||
int a,b,c;
|
||
{
|
||
if (debug_level)
|
||
warning (fmt, a, b, c);
|
||
}
|
||
|
||
/* This is in libmach.a */
|
||
extern mach_port_t name_server_port;
|
||
|
||
/* Set in catch_exception_raise */
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||
int stop_exception, stop_code, stop_subcode;
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||
int stopped_in_exception;
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||
|
||
/* Thread that was the active thread when we stopped */
|
||
thread_t stop_thread = MACH_PORT_NULL;
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||
|
||
char *hostname = "";
|
||
|
||
/* Set when task is attached or created */
|
||
boolean_t emulator_present = FALSE;
|
||
|
||
task_t inferior_task;
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||
thread_t current_thread;
|
||
|
||
/* Exception ports for inferior task */
|
||
mach_port_t inferior_exception_port = MACH_PORT_NULL;
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||
mach_port_t inferior_old_exception_port = MACH_PORT_NULL;
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||
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||
/* task exceptions and notifications */
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||
mach_port_t inferior_wait_port_set = MACH_PORT_NULL;
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||
mach_port_t our_notify_port = MACH_PORT_NULL;
|
||
|
||
/* This is "inferior_wait_port_set" when not single stepping, and
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||
* "singlestepped_thread_port" when we are single stepping.
|
||
*
|
||
* This is protected by a cleanup function: discard_single_step()
|
||
*/
|
||
mach_port_t currently_waiting_for = MACH_PORT_NULL;
|
||
|
||
/* A port for external messages to gdb.
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||
* External in the meaning that they do not come
|
||
* from the inferior_task, but rather from external
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||
* tasks.
|
||
*
|
||
* As a debugging feature:
|
||
* A debugger debugging another debugger can stop the
|
||
* inferior debugger by the following command sequence
|
||
* (without running external programs)
|
||
*
|
||
* (top-gdb) set stop_inferior_gdb ()
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||
* (top-gdb) continue
|
||
*/
|
||
mach_port_t our_message_port = MACH_PORT_NULL;
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||
|
||
/* For single stepping */
|
||
mach_port_t thread_exception_port = MACH_PORT_NULL;
|
||
mach_port_t thread_saved_exception_port = MACH_PORT_NULL;
|
||
mach_port_t singlestepped_thread_port = MACH_PORT_NULL;
|
||
|
||
/* For machid calls */
|
||
mach_port_t mid_server = MACH_PORT_NULL;
|
||
mach_port_t mid_auth = MACH_PORT_NULL;
|
||
|
||
/* If gdb thinks the inferior task is not suspended, it
|
||
* must take suspend/abort the threads when it reads the state.
|
||
*/
|
||
int must_suspend_thread = 0;
|
||
|
||
/* When single stepping, we switch the port that mach_really_wait() listens to.
|
||
* This cleanup is a guard to prevent the port set from being left to
|
||
* the singlestepped_thread_port when error() is called.
|
||
* This is nonzero only when we are single stepping.
|
||
*/
|
||
#define NULL_CLEANUP (struct cleanup *)0
|
||
struct cleanup *cleanup_step = NULL_CLEANUP;
|
||
|
||
|
||
extern struct target_ops m3_ops;
|
||
static void m3_kill_inferior ();
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||
|
||
#if 0
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||
#define MACH_TYPE_EXCEPTION_PORT -1
|
||
#endif
|
||
|
||
/* Chain of ports to remember requested notifications. */
|
||
|
||
struct port_chain {
|
||
struct port_chain *next;
|
||
mach_port_t port;
|
||
int type;
|
||
int mid; /* Now only valid with MACH_TYPE_THREAD and */
|
||
/* MACH_TYPE_THREAD */
|
||
};
|
||
typedef struct port_chain *port_chain_t;
|
||
|
||
/* Room for chain nodes comes from pchain_obstack */
|
||
struct obstack pchain_obstack;
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||
struct obstack *port_chain_obstack = &pchain_obstack;
|
||
|
||
/* For thread handling */
|
||
struct obstack Cproc_obstack;
|
||
struct obstack *cproc_obstack = &Cproc_obstack;
|
||
|
||
/* the list of notified ports */
|
||
port_chain_t notify_chain = (port_chain_t) NULL;
|
||
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||
port_chain_t
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||
port_chain_insert (list, name, type)
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||
port_chain_t list;
|
||
mach_port_t name;
|
||
int type;
|
||
{
|
||
kern_return_t ret;
|
||
port_chain_t new;
|
||
int mid;
|
||
|
||
if (! MACH_PORT_VALID (name))
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||
return list;
|
||
|
||
if (type == MACH_TYPE_TASK || type == MACH_TYPE_THREAD)
|
||
{
|
||
if (! MACH_PORT_VALID (mid_server))
|
||
{
|
||
warning ("Machid server port invalid, can not map port 0x%x to MID",
|
||
name);
|
||
mid = name;
|
||
}
|
||
else
|
||
{
|
||
ret = machid_mach_register (mid_server, mid_auth, name, type, &mid);
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
{
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||
warning ("Can not map name (0x%x) to MID with machid", name);
|
||
mid = name;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
abort ();
|
||
|
||
new = (port_chain_t) obstack_alloc (port_chain_obstack,
|
||
sizeof (struct port_chain));
|
||
new->next = list;
|
||
new->port = name;
|
||
new->type = type;
|
||
new->mid = mid;
|
||
|
||
return new;
|
||
}
|
||
|
||
port_chain_t
|
||
port_chain_delete (list, elem)
|
||
port_chain_t list;
|
||
mach_port_t elem;
|
||
{
|
||
if (list)
|
||
if (list->port == elem)
|
||
list = list->next;
|
||
else
|
||
while (list->next)
|
||
{
|
||
if (list->next->port == elem)
|
||
list->next = list->next->next; /* GCd with obstack_free() */
|
||
else
|
||
list = list->next;
|
||
}
|
||
return list;
|
||
}
|
||
|
||
void
|
||
port_chain_destroy (ostack)
|
||
struct obstack *ostack;
|
||
{
|
||
obstack_free (ostack, 0);
|
||
obstack_init (ostack);
|
||
}
|
||
|
||
port_chain_t
|
||
port_chain_member (list, elem)
|
||
port_chain_t list;
|
||
mach_port_t elem;
|
||
{
|
||
while (list)
|
||
{
|
||
if (list->port == elem)
|
||
return list;
|
||
list = list->next;
|
||
}
|
||
return (port_chain_t) NULL;
|
||
}
|
||
|
||
int
|
||
map_port_name_to_mid (name, type)
|
||
mach_port_t name;
|
||
int type;
|
||
{
|
||
port_chain_t elem;
|
||
|
||
if (!MACH_PORT_VALID (name))
|
||
return -1;
|
||
|
||
elem = port_chain_member (notify_chain, name);
|
||
|
||
if (elem && (elem->type == type))
|
||
return elem->mid;
|
||
|
||
if (elem)
|
||
return -1;
|
||
|
||
if (! MACH_PORT_VALID (mid_server))
|
||
{
|
||
warning ("Machid server port invalid, can not map port 0x%x to mid",
|
||
name);
|
||
return -1;
|
||
}
|
||
else
|
||
{
|
||
int mid;
|
||
kern_return_t ret;
|
||
|
||
ret = machid_mach_register (mid_server, mid_auth, name, type, &mid);
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Can not map name (0x%x) to mid with machid", name);
|
||
return -1;
|
||
}
|
||
return mid;
|
||
}
|
||
}
|
||
|
||
/* Guard for currently_waiting_for and singlestepped_thread_port */
|
||
static void
|
||
discard_single_step (thread)
|
||
thread_t thread;
|
||
{
|
||
currently_waiting_for = inferior_wait_port_set;
|
||
|
||
cleanup_step = NULL_CLEANUP;
|
||
if (MACH_PORT_VALID (thread) && MACH_PORT_VALID (singlestepped_thread_port))
|
||
setup_single_step (thread, FALSE);
|
||
}
|
||
|
||
setup_single_step (thread, start_step)
|
||
thread_t thread;
|
||
boolean_t start_step;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
if (! MACH_PORT_VALID (thread))
|
||
error ("Invalid thread supplied to setup_single_step");
|
||
else
|
||
{
|
||
mach_port_t teport;
|
||
|
||
/* Get the current thread exception port */
|
||
ret = thread_get_exception_port (thread, &teport);
|
||
CHK ("Getting thread's exception port", ret);
|
||
|
||
if (start_step)
|
||
{
|
||
if (MACH_PORT_VALID (singlestepped_thread_port))
|
||
{
|
||
warning ("Singlestepped_thread_port (0x%x) is still valid?",
|
||
singlestepped_thread_port);
|
||
singlestepped_thread_port = MACH_PORT_NULL;
|
||
}
|
||
|
||
/* If we are already stepping this thread */
|
||
if (MACH_PORT_VALID (teport) && teport == thread_exception_port)
|
||
{
|
||
ret = mach_port_deallocate (mach_task_self (), teport);
|
||
CHK ("Could not deallocate thread exception port", ret);
|
||
}
|
||
else
|
||
{
|
||
ret = thread_set_exception_port (thread, thread_exception_port);
|
||
CHK ("Setting exception port for thread", ret);
|
||
#if 0
|
||
/* Insert thread exception port to wait port set */
|
||
ret = mach_port_move_member (mach_task_self(),
|
||
thread_exception_port,
|
||
inferior_wait_port_set);
|
||
CHK ("Moving thread exception port to inferior_wait_port_set",
|
||
ret);
|
||
#endif
|
||
thread_saved_exception_port = teport;
|
||
}
|
||
|
||
thread_trace (thread, TRUE);
|
||
|
||
singlestepped_thread_port = thread_exception_port;
|
||
currently_waiting_for = singlestepped_thread_port;
|
||
cleanup_step = make_cleanup (discard_single_step, thread);
|
||
}
|
||
else
|
||
{
|
||
if (! MACH_PORT_VALID (teport))
|
||
error ("Single stepped thread had an invalid exception port?");
|
||
|
||
if (teport != thread_exception_port)
|
||
error ("Single stepped thread had an unknown exception port?");
|
||
|
||
ret = mach_port_deallocate (mach_task_self (), teport);
|
||
CHK ("Couldn't deallocate thread exception port", ret);
|
||
#if 0
|
||
/* Remove thread exception port from wait port set */
|
||
ret = mach_port_move_member (mach_task_self(),
|
||
thread_exception_port,
|
||
MACH_PORT_NULL);
|
||
CHK ("Removing thread exception port from inferior_wait_port_set",
|
||
ret);
|
||
#endif
|
||
/* Restore thread's old exception port */
|
||
ret = thread_set_exception_port (thread,
|
||
thread_saved_exception_port);
|
||
CHK ("Restoring stepped thread's exception port", ret);
|
||
|
||
if (MACH_PORT_VALID (thread_saved_exception_port))
|
||
(void) mach_port_deallocate (mach_task_self (),
|
||
thread_saved_exception_port);
|
||
|
||
thread_trace (thread, FALSE);
|
||
|
||
singlestepped_thread_port = MACH_PORT_NULL;
|
||
currently_waiting_for = inferior_wait_port_set;
|
||
if (cleanup_step)
|
||
discard_cleanups (cleanup_step);
|
||
}
|
||
}
|
||
}
|
||
|
||
static
|
||
request_notify (name, variant, type)
|
||
mach_port_t name;
|
||
mach_msg_id_t variant;
|
||
int type;
|
||
{
|
||
kern_return_t ret;
|
||
mach_port_t previous_port_dummy = MACH_PORT_NULL;
|
||
|
||
if (! MACH_PORT_VALID (name))
|
||
return;
|
||
|
||
if (port_chain_member (notify_chain, name))
|
||
return;
|
||
|
||
ret = mach_port_request_notification (mach_task_self(),
|
||
name,
|
||
variant,
|
||
1,
|
||
our_notify_port,
|
||
MACH_MSG_TYPE_MAKE_SEND_ONCE,
|
||
&previous_port_dummy);
|
||
CHK ("Serious: request_notify failed", ret);
|
||
|
||
(void) mach_port_deallocate (mach_task_self (),
|
||
previous_port_dummy);
|
||
|
||
notify_chain = port_chain_insert (notify_chain, name, type);
|
||
}
|
||
|
||
reverse_msg_bits(msgp, type)
|
||
mach_msg_header_t *msgp;
|
||
int type;
|
||
{
|
||
int rbits,lbits;
|
||
rbits = MACH_MSGH_BITS_REMOTE(msgp->msgh_bits);
|
||
lbits = type;
|
||
msgp->msgh_bits =
|
||
(msgp->msgh_bits & ~MACH_MSGH_BITS_PORTS_MASK) |
|
||
MACH_MSGH_BITS(lbits,rbits);
|
||
}
|
||
|
||
/* On the third day He said:
|
||
|
||
Let this be global
|
||
and then it was global.
|
||
|
||
When creating the inferior fork, the
|
||
child code in inflow.c sets the name of the
|
||
bootstrap_port in its address space to this
|
||
variable.
|
||
|
||
The name is transferred to our address space
|
||
with mach3_read_inferior().
|
||
|
||
Thou shalt not do this with
|
||
task_get_bootstrap_port() in this task, since
|
||
the name in the inferior task is different than
|
||
the one we get.
|
||
|
||
For blessed are the meek, as they shall inherit
|
||
the address space.
|
||
*/
|
||
mach_port_t original_server_port_name = MACH_PORT_NULL;
|
||
|
||
|
||
/* Called from inferior after FORK but before EXEC */
|
||
static void
|
||
m3_trace_me ()
|
||
{
|
||
kern_return_t ret;
|
||
|
||
/* Get the NAME of the bootstrap port in this task
|
||
so that GDB can read it */
|
||
ret = task_get_bootstrap_port (mach_task_self (),
|
||
&original_server_port_name);
|
||
if (ret != KERN_SUCCESS)
|
||
abort ();
|
||
ret = mach_port_deallocate (mach_task_self (),
|
||
original_server_port_name);
|
||
if (ret != KERN_SUCCESS)
|
||
abort ();
|
||
|
||
/* Suspend this task to let the parent change my ports.
|
||
Resumed by the debugger */
|
||
ret = task_suspend (mach_task_self ());
|
||
if (ret != KERN_SUCCESS)
|
||
abort ();
|
||
}
|
||
|
||
/*
|
||
* Intercept system calls to Unix server.
|
||
* After EXEC_COUNTER calls to exec(), return.
|
||
*
|
||
* Pre-assertion: Child is suspended. (Not verified)
|
||
* Post-condition: Child is suspended after EXEC_COUNTER exec() calls.
|
||
*/
|
||
|
||
void
|
||
intercept_exec_calls (exec_counter)
|
||
int exec_counter;
|
||
{
|
||
int terminal_initted = 0;
|
||
|
||
struct syscall_msg_t {
|
||
mach_msg_header_t header;
|
||
mach_msg_type_t type;
|
||
char room[ 2000 ]; /* Enuff space */
|
||
};
|
||
|
||
struct syscall_msg_t syscall_in, syscall_out;
|
||
|
||
mach_port_t fake_server;
|
||
mach_port_t original_server_send;
|
||
mach_port_t original_exec_reply;
|
||
mach_port_t exec_reply;
|
||
mach_port_t exec_reply_send;
|
||
mach_msg_type_name_t acquired;
|
||
mach_port_t emulator_server_port_name;
|
||
struct task_basic_info info;
|
||
mach_msg_type_number_t info_count;
|
||
|
||
kern_return_t ret;
|
||
|
||
if (exec_counter <= 0)
|
||
return; /* We are already set up in the correct program */
|
||
|
||
ret = mach_port_allocate(mach_task_self(),
|
||
MACH_PORT_RIGHT_RECEIVE,
|
||
&fake_server);
|
||
CHK("create inferior_fake_server port failed", ret);
|
||
|
||
/* Wait for inferior_task to suspend itself */
|
||
while(1)
|
||
{
|
||
info_count = sizeof (info);
|
||
ret = task_info (inferior_task,
|
||
TASK_BASIC_INFO,
|
||
(task_info_t)&info,
|
||
&info_count);
|
||
CHK ("Task info", ret);
|
||
|
||
if (info.suspend_count)
|
||
break;
|
||
|
||
/* Note that the definition of the parameter was undefined
|
||
* at the time of this writing, so I just use an `ad hoc' value.
|
||
*/
|
||
(void) swtch_pri (42); /* Universal Priority Value */
|
||
}
|
||
|
||
/* Read the inferior's bootstrap port name */
|
||
if (!mach3_read_inferior (&original_server_port_name,
|
||
&original_server_port_name,
|
||
sizeof (original_server_port_name)))
|
||
error ("Can't read inferior task bootstrap port name");
|
||
|
||
/* @@ BUG: If more than 1 send right GDB will FAIL!!! */
|
||
/* Should get refs, and set them back when restoring */
|
||
/* Steal the original bsd server send right from inferior */
|
||
ret = mach_port_extract_right (inferior_task,
|
||
original_server_port_name,
|
||
MACH_MSG_TYPE_MOVE_SEND,
|
||
&original_server_send,
|
||
&acquired);
|
||
CHK("mach_port_extract_right (bsd server send)",ret);
|
||
|
||
if (acquired != MACH_MSG_TYPE_PORT_SEND)
|
||
error("Incorrect right extracted, send right to bsd server excpected");
|
||
|
||
ret = mach_port_insert_right (inferior_task,
|
||
original_server_port_name,
|
||
fake_server,
|
||
MACH_MSG_TYPE_MAKE_SEND);
|
||
CHK("mach_port_insert_right (fake server send)",ret);
|
||
|
||
xx_debug ("inferior task bsd server ports set up \nfs %x, ospn %x, oss %x\n",
|
||
fake_server,
|
||
original_server_port_name, original_server_send);
|
||
|
||
/* A receive right to the reply generated by unix server exec() request */
|
||
ret = mach_port_allocate(mach_task_self(),
|
||
MACH_PORT_RIGHT_RECEIVE,
|
||
&exec_reply);
|
||
CHK("create intercepted_reply_port port failed", ret);
|
||
|
||
/* Pass this send right to Unix server so it replies to us after exec() */
|
||
ret = mach_port_extract_right (mach_task_self (),
|
||
exec_reply,
|
||
MACH_MSG_TYPE_MAKE_SEND_ONCE,
|
||
&exec_reply_send,
|
||
&acquired);
|
||
CHK("mach_port_extract_right (exec_reply)",ret);
|
||
|
||
if (acquired != MACH_MSG_TYPE_PORT_SEND_ONCE)
|
||
error("Incorrect right extracted, send once excpected for exec reply");
|
||
|
||
ret = mach_port_move_member(mach_task_self(),
|
||
fake_server,
|
||
inferior_wait_port_set);
|
||
CHK ("Moving fake syscall port to inferior_wait_port_set", ret);
|
||
|
||
xx_debug ("syscall fake server set up, resuming inferior\n");
|
||
|
||
ret = task_resume (inferior_task);
|
||
CHK("task_resume (startup)", ret);
|
||
|
||
/* Read requests from the inferior.
|
||
Pass directly through everything else except exec() calls.
|
||
*/
|
||
while(exec_counter > 0)
|
||
{
|
||
ret = mach_msg (&syscall_in.header, /* header */
|
||
MACH_RCV_MSG, /* options */
|
||
0, /* send size */
|
||
sizeof (struct syscall_msg_t), /* receive size */
|
||
inferior_wait_port_set, /* receive_name */
|
||
MACH_MSG_TIMEOUT_NONE,
|
||
MACH_PORT_NULL);
|
||
CHK("mach_msg (intercepted sycall)", ret);
|
||
|
||
#ifdef DUMP_SYSCALL
|
||
print_msg (&syscall_in.header);
|
||
#endif
|
||
|
||
/* ASSERT : msgh_local_port == fake_server */
|
||
|
||
if (notify_server (&syscall_in.header, &syscall_out.header))
|
||
error ("received a notify while intercepting syscalls");
|
||
|
||
if (syscall_in.header.msgh_id == MIG_EXEC_SYSCALL_ID)
|
||
{
|
||
xx_debug ("Received EXEC SYSCALL, counter = %d\n", exec_counter);
|
||
if (exec_counter == 1)
|
||
{
|
||
original_exec_reply = syscall_in.header.msgh_remote_port;
|
||
syscall_in.header.msgh_remote_port = exec_reply_send;
|
||
}
|
||
|
||
if (!terminal_initted)
|
||
{
|
||
/* Now that the child has exec'd we know it has already set its
|
||
process group. On POSIX systems, tcsetpgrp will fail with
|
||
EPERM if we try it before the child's setpgid. */
|
||
|
||
/* Set up the "saved terminal modes" of the inferior
|
||
based on what modes we are starting it with. */
|
||
target_terminal_init ();
|
||
|
||
/* Install inferior's terminal modes. */
|
||
target_terminal_inferior ();
|
||
|
||
terminal_initted = 1;
|
||
}
|
||
|
||
exec_counter--;
|
||
}
|
||
|
||
syscall_in.header.msgh_local_port = syscall_in.header.msgh_remote_port;
|
||
syscall_in.header.msgh_remote_port = original_server_send;
|
||
|
||
reverse_msg_bits(&syscall_in.header, MACH_MSG_TYPE_COPY_SEND);
|
||
|
||
ret = mach_msg_send (&syscall_in.header);
|
||
CHK ("Forwarded syscall", ret);
|
||
}
|
||
|
||
ret = mach_port_move_member(mach_task_self(),
|
||
fake_server,
|
||
MACH_PORT_NULL);
|
||
CHK ("Moving fake syscall out of inferior_wait_port_set", ret);
|
||
|
||
ret = mach_port_move_member(mach_task_self(),
|
||
exec_reply,
|
||
inferior_wait_port_set);
|
||
CHK ("Moving exec_reply to inferior_wait_port_set", ret);
|
||
|
||
ret = mach_msg (&syscall_in.header, /* header */
|
||
MACH_RCV_MSG, /* options */
|
||
0, /* send size */
|
||
sizeof (struct syscall_msg_t), /* receive size */
|
||
inferior_wait_port_set, /* receive_name */
|
||
MACH_MSG_TIMEOUT_NONE,
|
||
MACH_PORT_NULL);
|
||
CHK("mach_msg (exec reply)", ret);
|
||
|
||
ret = task_suspend (inferior_task);
|
||
CHK ("Suspending inferior after last exec", ret);
|
||
|
||
must_suspend_thread = 0;
|
||
|
||
xx_debug ("Received exec reply from bsd server, suspended inferior task\n");
|
||
|
||
#ifdef DUMP_SYSCALL
|
||
print_msg (&syscall_in.header);
|
||
#endif
|
||
|
||
/* Message should appear as if it came from the unix server */
|
||
syscall_in.header.msgh_local_port = MACH_PORT_NULL;
|
||
|
||
/* and go to the inferior task original reply port */
|
||
syscall_in.header.msgh_remote_port = original_exec_reply;
|
||
|
||
reverse_msg_bits(&syscall_in.header, MACH_MSG_TYPE_MOVE_SEND_ONCE);
|
||
|
||
ret = mach_msg_send (&syscall_in.header);
|
||
CHK ("Forwarding exec reply to inferior", ret);
|
||
|
||
/* Garbage collect */
|
||
ret = mach_port_deallocate (inferior_task,
|
||
original_server_port_name);
|
||
CHK ("deallocating fake server send right", ret);
|
||
|
||
ret = mach_port_insert_right (inferior_task,
|
||
original_server_port_name,
|
||
original_server_send,
|
||
MACH_MSG_TYPE_MOVE_SEND);
|
||
CHK ("Restoring the original bsd server send right", ret);
|
||
|
||
ret = mach_port_destroy (mach_task_self (),
|
||
fake_server);
|
||
fake_server = MACH_PORT_DEAD;
|
||
CHK("mach_port_destroy (fake_server)", ret);
|
||
|
||
ret = mach_port_destroy (mach_task_self (),
|
||
exec_reply);
|
||
exec_reply = MACH_PORT_DEAD;
|
||
CHK("mach_port_destroy (exec_reply)", ret);
|
||
|
||
xx_debug ("Done with exec call interception\n");
|
||
}
|
||
|
||
void
|
||
consume_send_rights (thread_list, thread_count)
|
||
thread_array_t thread_list;
|
||
int thread_count;
|
||
{
|
||
int index;
|
||
|
||
if (!thread_count)
|
||
return;
|
||
|
||
for (index = 0; index < thread_count; index++)
|
||
{
|
||
/* Since thread kill command kills threads, don't check ret */
|
||
(void) mach_port_deallocate (mach_task_self (),
|
||
thread_list [ index ]);
|
||
}
|
||
}
|
||
|
||
/* suspend/abort/resume a thread. */
|
||
setup_thread (thread, what)
|
||
mach_port_t thread;
|
||
int what;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
if (what)
|
||
{
|
||
ret = thread_suspend (thread);
|
||
CHK ("setup_thread thread_suspend", ret);
|
||
|
||
ret = thread_abort (thread);
|
||
CHK ("setup_thread thread_abort", ret);
|
||
}
|
||
else
|
||
{
|
||
ret = thread_resume (thread);
|
||
CHK ("setup_thread thread_resume", ret);
|
||
}
|
||
}
|
||
|
||
int
|
||
map_slot_to_mid (slot, threads, thread_count)
|
||
int slot;
|
||
thread_array_t threads;
|
||
int thread_count;
|
||
{
|
||
kern_return_t ret;
|
||
int deallocate = 0;
|
||
int index;
|
||
int mid;
|
||
|
||
if (! threads)
|
||
{
|
||
deallocate++;
|
||
ret = task_threads (inferior_task, &threads, &thread_count);
|
||
CHK ("Can not select a thread from a dead task", ret);
|
||
}
|
||
|
||
if (slot < 0 || slot >= thread_count)
|
||
{
|
||
if (deallocate)
|
||
{
|
||
consume_send_rights (threads, thread_count);
|
||
(void) vm_deallocate (mach_task_self(), (vm_address_t)threads,
|
||
(thread_count * sizeof(mach_port_t)));
|
||
}
|
||
if (slot < 0)
|
||
error ("invalid slot number");
|
||
else
|
||
return -(slot+1);
|
||
}
|
||
|
||
mid = map_port_name_to_mid (threads [slot], MACH_TYPE_THREAD);
|
||
|
||
if (deallocate)
|
||
{
|
||
consume_send_rights (threads, thread_count);
|
||
(void) vm_deallocate (mach_task_self(), (vm_address_t)threads,
|
||
(thread_count * sizeof(mach_port_t)));
|
||
}
|
||
|
||
return mid;
|
||
}
|
||
|
||
static int
|
||
parse_thread_id (arg, thread_count, slots)
|
||
char *arg;
|
||
int thread_count;
|
||
int slots;
|
||
{
|
||
kern_return_t ret;
|
||
int mid;
|
||
int slot;
|
||
int index;
|
||
|
||
if (arg == 0)
|
||
return 0;
|
||
|
||
while (*arg && (*arg == ' ' || *arg == '\t'))
|
||
arg++;
|
||
|
||
if (! *arg)
|
||
return 0;
|
||
|
||
/* Currently parse MID and @SLOTNUMBER */
|
||
if (*arg != '@')
|
||
{
|
||
mid = atoi (arg);
|
||
if (mid <= 0)
|
||
error ("valid thread mid expected");
|
||
return mid;
|
||
}
|
||
|
||
arg++;
|
||
slot = atoi (arg);
|
||
|
||
if (slot < 0)
|
||
error ("invalid slot number");
|
||
|
||
/* If you want slot numbers to remain slot numbers, set slots.
|
||
*
|
||
* Well, since 0 is reserved, return the ordinal number
|
||
* of the thread rather than the slot number. Awk, this
|
||
* counts as a kludge.
|
||
*/
|
||
if (slots)
|
||
return -(slot+1);
|
||
|
||
if (thread_count && slot >= thread_count)
|
||
return -(slot+1);
|
||
|
||
mid = map_slot_to_mid (slot);
|
||
|
||
return mid;
|
||
}
|
||
|
||
/* THREAD_ID 0 is special; it selects the first kernel
|
||
* thread from the list (i.e. SLOTNUMBER 0)
|
||
* This is used when starting the program with 'run' or when attaching.
|
||
*
|
||
* If FLAG is 0 the context is not changed, and the registers, frame, etc
|
||
* will continue to describe the old thread.
|
||
*
|
||
* If FLAG is nonzero, really select the thread.
|
||
* If FLAG is 2, the THREAD_ID is a slotnumber instead of a mid.
|
||
*
|
||
*/
|
||
kern_return_t
|
||
select_thread (task, thread_id, flag)
|
||
mach_port_t task;
|
||
int thread_id;
|
||
int flag;
|
||
{
|
||
thread_array_t thread_list;
|
||
int thread_count;
|
||
kern_return_t ret;
|
||
int index;
|
||
thread_t new_thread = MACH_PORT_NULL;
|
||
|
||
if (thread_id < 0)
|
||
error ("Can't select cprocs without kernel thread");
|
||
|
||
ret = task_threads (task, &thread_list, &thread_count);
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Can not select a thread from a dead task");
|
||
m3_kill_inferior ();
|
||
return KERN_FAILURE;
|
||
}
|
||
|
||
if (thread_count == 0)
|
||
{
|
||
/* The task can not do anything anymore, but it still
|
||
* exists as a container for memory and ports.
|
||
*/
|
||
registers_changed ();
|
||
warning ("Task %d has no threads",
|
||
map_port_name_to_mid (task, MACH_TYPE_TASK));
|
||
current_thread = MACH_PORT_NULL;
|
||
(void) vm_deallocate(mach_task_self(),
|
||
(vm_address_t) thread_list,
|
||
(thread_count * sizeof(mach_port_t)));
|
||
return KERN_FAILURE;
|
||
}
|
||
|
||
if (! thread_id || flag == 2)
|
||
{
|
||
/* First thread or a slotnumber */
|
||
if (! thread_id)
|
||
new_thread = thread_list[0];
|
||
else
|
||
{
|
||
if (thread_id < thread_count)
|
||
new_thread = thread_list[ thread_id ];
|
||
else
|
||
{
|
||
(void) vm_deallocate(mach_task_self(),
|
||
(vm_address_t) thread_list,
|
||
(thread_count * sizeof(mach_port_t)));
|
||
error ("No such thread slot number : %d", thread_id);
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
for (index = 0; index < thread_count; index++)
|
||
if (thread_id == map_port_name_to_mid (thread_list [index],
|
||
MACH_TYPE_THREAD))
|
||
{
|
||
new_thread = thread_list [index];
|
||
index = -1;
|
||
break;
|
||
}
|
||
|
||
if (index != -1)
|
||
error ("No thread with mid %d", thread_id);
|
||
}
|
||
|
||
/* Notify when the selected thread dies */
|
||
request_notify (new_thread, MACH_NOTIFY_DEAD_NAME, MACH_TYPE_THREAD);
|
||
|
||
ret = vm_deallocate(mach_task_self(),
|
||
(vm_address_t) thread_list,
|
||
(thread_count * sizeof(mach_port_t)));
|
||
CHK ("vm_deallocate", ret);
|
||
|
||
if (! flag)
|
||
current_thread = new_thread;
|
||
else
|
||
{
|
||
#if 0
|
||
if (MACH_PORT_VALID (current_thread))
|
||
{
|
||
/* Store the gdb's view of the thread we are deselecting
|
||
*
|
||
* @@ I think gdb updates registers immediately when they are
|
||
* changed, so don't do this.
|
||
*/
|
||
ret = thread_abort (current_thread);
|
||
CHK ("Could not abort system calls when saving state of old thread",
|
||
ret);
|
||
target_prepare_to_store ();
|
||
target_store_registers (-1);
|
||
}
|
||
#endif
|
||
|
||
registers_changed ();
|
||
|
||
current_thread = new_thread;
|
||
|
||
ret = thread_abort (current_thread);
|
||
CHK ("Could not abort system calls when selecting a thread", ret);
|
||
|
||
stop_pc = read_pc();
|
||
flush_cached_frames ();
|
||
|
||
select_frame (get_current_frame (), 0);
|
||
}
|
||
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
/*
|
||
* Switch to use thread named NEW_THREAD.
|
||
* Return it's MID
|
||
*/
|
||
int
|
||
switch_to_thread (new_thread)
|
||
thread_t new_thread;
|
||
{
|
||
thread_t saved_thread = current_thread;
|
||
int mid;
|
||
|
||
mid = map_port_name_to_mid (new_thread,
|
||
MACH_TYPE_THREAD);
|
||
if (mid == -1)
|
||
warning ("Can't map thread name 0x%x to mid", new_thread);
|
||
else if (select_thread (inferior_task, mid, 1) != KERN_SUCCESS)
|
||
{
|
||
if (current_thread)
|
||
current_thread = saved_thread;
|
||
error ("Could not select thread %d", mid);
|
||
}
|
||
|
||
return mid;
|
||
}
|
||
|
||
/* Do this in gdb after doing FORK but before STARTUP_INFERIOR.
|
||
* Note that the registers are not yet valid in the inferior task.
|
||
*/
|
||
static void
|
||
m3_trace_him (pid)
|
||
int pid;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
push_target (&m3_ops);
|
||
|
||
inferior_task = task_by_pid (pid);
|
||
|
||
if (! MACH_PORT_VALID (inferior_task))
|
||
error ("Can not map Unix pid %d to Mach task", pid);
|
||
|
||
/* Clean up previous notifications and create new ones */
|
||
setup_notify_port (1);
|
||
|
||
/* When notification appears, the inferior task has died */
|
||
request_notify (inferior_task, MACH_NOTIFY_DEAD_NAME, MACH_TYPE_TASK);
|
||
|
||
emulator_present = have_emulator_p (inferior_task);
|
||
|
||
/* By default, select the first thread,
|
||
* If task has no threads, gives a warning
|
||
* Does not fetch registers, since they are not yet valid.
|
||
*/
|
||
select_thread (inferior_task, 0, 0);
|
||
|
||
inferior_exception_port = MACH_PORT_NULL;
|
||
|
||
setup_exception_port ();
|
||
|
||
xx_debug ("Now the debugged task is created\n");
|
||
|
||
/* One trap to exec the shell, one to exec the program being debugged. */
|
||
intercept_exec_calls (2);
|
||
}
|
||
|
||
setup_exception_port ()
|
||
{
|
||
kern_return_t ret;
|
||
|
||
ret = mach_port_allocate (mach_task_self(),
|
||
MACH_PORT_RIGHT_RECEIVE,
|
||
&inferior_exception_port);
|
||
CHK("mach_port_allocate",ret);
|
||
|
||
/* add send right */
|
||
ret = mach_port_insert_right (mach_task_self (),
|
||
inferior_exception_port,
|
||
inferior_exception_port,
|
||
MACH_MSG_TYPE_MAKE_SEND);
|
||
CHK("mach_port_insert_right",ret);
|
||
|
||
ret = mach_port_move_member (mach_task_self(),
|
||
inferior_exception_port,
|
||
inferior_wait_port_set);
|
||
CHK("mach_port_move_member",ret);
|
||
|
||
ret = task_get_special_port (inferior_task,
|
||
TASK_EXCEPTION_PORT,
|
||
&inferior_old_exception_port);
|
||
CHK ("task_get_special_port(old exc)",ret);
|
||
|
||
ret = task_set_special_port (inferior_task,
|
||
TASK_EXCEPTION_PORT,
|
||
inferior_exception_port);
|
||
CHK("task_set_special_port",ret);
|
||
|
||
ret = mach_port_deallocate (mach_task_self (),
|
||
inferior_exception_port);
|
||
CHK("mack_port_deallocate",ret);
|
||
|
||
#if 0
|
||
/* When notify appears, the inferior_task's exception
|
||
* port has been destroyed.
|
||
*
|
||
* Not used, since the dead_name_notification already
|
||
* appears when task dies.
|
||
*
|
||
*/
|
||
request_notify (inferior_exception_port,
|
||
MACH_NOTIFY_NO_SENDERS,
|
||
MACH_TYPE_EXCEPTION_PORT);
|
||
#endif
|
||
}
|
||
|
||
/* Nonzero if gdb is waiting for a message */
|
||
int mach_really_waiting;
|
||
|
||
/* Wait for the inferior to stop for some reason.
|
||
- Loop on notifications until inferior_task dies.
|
||
- Loop on exceptions until stopped_in_exception comes true.
|
||
(e.g. we receive a single step trace trap)
|
||
- a message arrives to gdb's message port
|
||
|
||
There is no other way to exit this loop.
|
||
|
||
Returns the inferior_pid for rest of gdb.
|
||
Side effects: Set *OURSTATUS. */
|
||
int
|
||
mach_really_wait (pid, ourstatus)
|
||
int pid;
|
||
struct target_waitstatus *ourstatus;
|
||
{
|
||
kern_return_t ret;
|
||
int w;
|
||
|
||
struct msg {
|
||
mach_msg_header_t header;
|
||
mach_msg_type_t foo;
|
||
int data[8000];
|
||
} in_msg, out_msg;
|
||
|
||
/* Either notify (death), exception or message can stop the inferior */
|
||
stopped_in_exception = FALSE;
|
||
|
||
while (1)
|
||
{
|
||
QUIT;
|
||
|
||
stop_exception = stop_code = stop_subcode = -1;
|
||
stop_thread = MACH_PORT_NULL;
|
||
|
||
mach_really_waiting = 1;
|
||
ret = mach_msg (&in_msg.header, /* header */
|
||
MACH_RCV_MSG, /* options */
|
||
0, /* send size */
|
||
sizeof (struct msg), /* receive size */
|
||
currently_waiting_for, /* receive name */
|
||
MACH_MSG_TIMEOUT_NONE,
|
||
MACH_PORT_NULL);
|
||
mach_really_waiting = 0;
|
||
CHK("mach_msg (receive)", ret);
|
||
|
||
/* Check if we received a notify of the childs' death */
|
||
if (notify_server (&in_msg.header, &out_msg.header))
|
||
{
|
||
/* If inferior_task is null then the inferior has
|
||
gone away and we want to return to command level.
|
||
Otherwise it was just an informative message and we
|
||
need to look to see if there are any more. */
|
||
if (inferior_task != MACH_PORT_NULL)
|
||
continue;
|
||
else
|
||
{
|
||
/* Collect Unix exit status for gdb */
|
||
|
||
wait3(&w, WNOHANG, 0);
|
||
|
||
/* This mess is here to check that the rest of
|
||
* gdb knows that the inferior died. It also
|
||
* tries to hack around the fact that Mach 3.0 (mk69)
|
||
* unix server (ux28) does not always know what
|
||
* has happened to it's children when mach-magic
|
||
* is applied on them.
|
||
*/
|
||
if ((!WIFEXITED(w) && WIFSTOPPED(w)) ||
|
||
(WIFEXITED(w) && WEXITSTATUS(w) > 0377))
|
||
{
|
||
WSETEXIT(w, 0);
|
||
warning ("Using exit value 0 for terminated task");
|
||
}
|
||
else if (!WIFEXITED(w))
|
||
{
|
||
int sig = WTERMSIG(w);
|
||
|
||
/* Signals cause problems. Warn the user. */
|
||
if (sig != SIGKILL) /* Bad luck if garbage matches this */
|
||
warning ("The terminating signal stuff may be nonsense");
|
||
else if (sig > NSIG)
|
||
{
|
||
WSETEXIT(w, 0);
|
||
warning ("Using exit value 0 for terminated task");
|
||
}
|
||
}
|
||
store_waitstatus (ourstatus, w);
|
||
return inferior_pid;
|
||
}
|
||
}
|
||
|
||
/* Hmm. Check for exception, as it was not a notification.
|
||
exc_server() does an upcall to catch_exception_raise()
|
||
if this rpc is an exception. Further actions are decided
|
||
there.
|
||
*/
|
||
if (! exc_server (&in_msg.header, &out_msg.header))
|
||
{
|
||
|
||
/* Not an exception, check for message.
|
||
*
|
||
* Messages don't come from the inferior, or if they
|
||
* do they better be asynchronous or it will hang.
|
||
*/
|
||
if (gdb_message_server (&in_msg.header))
|
||
continue;
|
||
|
||
error ("Unrecognized message received in mach_really_wait");
|
||
}
|
||
|
||
/* Send the reply of the exception rpc to the suspended task */
|
||
ret = mach_msg_send (&out_msg.header);
|
||
CHK ("mach_msg_send (exc reply)", ret);
|
||
|
||
if (stopped_in_exception)
|
||
{
|
||
/* Get unix state. May be changed in mach3_exception_actions() */
|
||
wait3(&w, WNOHANG, 0);
|
||
|
||
mach3_exception_actions (&w, FALSE, "Task");
|
||
|
||
store_waitstatus (ourstatus, w);
|
||
return inferior_pid;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Called by macro DO_QUIT() in utils.c(quit).
|
||
* This is called just before calling error() to return to command level
|
||
*/
|
||
void
|
||
mach3_quit ()
|
||
{
|
||
int mid;
|
||
kern_return_t ret;
|
||
|
||
if (mach_really_waiting)
|
||
{
|
||
ret = task_suspend (inferior_task);
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Could not suspend task for interrupt: %s",
|
||
mach_error_string (ret));
|
||
mach_really_waiting = 0;
|
||
return;
|
||
}
|
||
}
|
||
|
||
must_suspend_thread = 0;
|
||
mach_really_waiting = 0;
|
||
|
||
mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD);
|
||
if (mid == -1)
|
||
{
|
||
warning ("Selecting first existing kernel thread");
|
||
mid = 0;
|
||
}
|
||
|
||
current_thread = MACH_PORT_NULL; /* Force setup */
|
||
select_thread (inferior_task, mid, 1);
|
||
|
||
return;
|
||
}
|
||
|
||
#if 0
|
||
/* bogus bogus bogus. It is NOT OK to quit out of target_wait. */
|
||
|
||
/* If ^C is typed when we are waiting for a message
|
||
* and your Unix server is able to notice that we
|
||
* should quit now.
|
||
*
|
||
* Called by REQUEST_QUIT() from utils.c(request_quit)
|
||
*/
|
||
void
|
||
mach3_request_quit ()
|
||
{
|
||
if (mach_really_waiting)
|
||
immediate_quit = 1;
|
||
}
|
||
#endif
|
||
|
||
/*
|
||
* Gdb message server.
|
||
* Currently implemented is the STOP message, that causes
|
||
* gdb to return to the command level like ^C had been typed from terminal.
|
||
*/
|
||
int
|
||
gdb_message_server (InP)
|
||
mach_msg_header_t *InP;
|
||
{
|
||
kern_return_t ret;
|
||
int mid;
|
||
|
||
if (InP->msgh_local_port == our_message_port)
|
||
{
|
||
/* A message coming to our_message_port. Check validity */
|
||
switch (InP->msgh_id) {
|
||
|
||
case GDB_MESSAGE_ID_STOP:
|
||
ret = task_suspend (inferior_task);
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("Could not suspend task for stop message: %s",
|
||
mach_error_string (ret));
|
||
|
||
/* QUIT in mach_really_wait() loop. */
|
||
request_quit (0);
|
||
break;
|
||
|
||
default:
|
||
warning ("Invalid message id %d received, ignored.",
|
||
InP->msgh_id);
|
||
break;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Message not handled by this server */
|
||
return 0;
|
||
}
|
||
|
||
/* NOTE: This is not an RPC call. It is a simpleroutine.
|
||
*
|
||
* This is not called from this gdb code.
|
||
*
|
||
* It may be called by another debugger to cause this
|
||
* debugger to enter command level:
|
||
*
|
||
* (gdb) set stop_inferior_gdb ()
|
||
* (gdb) continue
|
||
*
|
||
* External program "stop-gdb" implements this also.
|
||
*/
|
||
void
|
||
stop_inferior_gdb ()
|
||
{
|
||
kern_return_t ret;
|
||
|
||
/* Code generated by mig, with minor cleanups :-)
|
||
*
|
||
* simpleroutine stop_inferior_gdb (our_message_port : mach_port_t);
|
||
*/
|
||
|
||
typedef struct {
|
||
mach_msg_header_t Head;
|
||
} Request;
|
||
|
||
Request Mess;
|
||
|
||
register Request *InP = &Mess;
|
||
|
||
InP->Head.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, 0);
|
||
|
||
/* msgh_size passed as argument */
|
||
InP->Head.msgh_remote_port = our_message_port;
|
||
InP->Head.msgh_local_port = MACH_PORT_NULL;
|
||
InP->Head.msgh_seqno = 0;
|
||
InP->Head.msgh_id = GDB_MESSAGE_ID_STOP;
|
||
|
||
ret = mach_msg (&InP->Head,
|
||
MACH_SEND_MSG|MACH_MSG_OPTION_NONE,
|
||
sizeof(Request),
|
||
0,
|
||
MACH_PORT_NULL,
|
||
MACH_MSG_TIMEOUT_NONE,
|
||
MACH_PORT_NULL);
|
||
}
|
||
|
||
#ifdef THREAD_ALLOWED_TO_BREAK
|
||
/*
|
||
* Return 1 if the MID specifies the thread that caused the
|
||
* last exception.
|
||
* Since catch_exception_raise() selects the thread causing
|
||
* the last exception to current_thread, we just check that
|
||
* it is selected and the last exception was a breakpoint.
|
||
*/
|
||
int
|
||
mach_thread_for_breakpoint (mid)
|
||
int mid;
|
||
{
|
||
int cmid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD);
|
||
|
||
if (mid < 0)
|
||
{
|
||
mid = map_slot_to_mid (-(mid+1), 0, 0);
|
||
if (mid < 0)
|
||
return 0; /* Don't stop, no such slot */
|
||
}
|
||
|
||
if (! mid || cmid == -1)
|
||
return 1; /* stop */
|
||
|
||
return cmid == mid && stop_exception == EXC_BREAKPOINT;
|
||
}
|
||
#endif /* THREAD_ALLOWED_TO_BREAK */
|
||
|
||
#ifdef THREAD_PARSE_ID
|
||
/*
|
||
* Map a thread id string (MID or a @SLOTNUMBER)
|
||
* to a thread-id.
|
||
*
|
||
* 0 matches all threads.
|
||
* Otherwise the meaning is defined only in this file.
|
||
* (mach_thread_for_breakpoint uses it)
|
||
*
|
||
* @@ This allows non-existent MIDs to be specified.
|
||
* It now also allows non-existent slots to be
|
||
* specified. (Slot numbers stored are negative,
|
||
* and the magnitude is one greater than the actual
|
||
* slot index. (Since 0 is reserved))
|
||
*/
|
||
int
|
||
mach_thread_parse_id (arg)
|
||
char *arg;
|
||
{
|
||
int mid;
|
||
if (arg == 0)
|
||
error ("thread id excpected");
|
||
mid = parse_thread_id (arg, 0, 1);
|
||
|
||
return mid;
|
||
}
|
||
#endif /* THREAD_PARSE_ID */
|
||
|
||
#ifdef THREAD_OUTPUT_ID
|
||
char *
|
||
mach_thread_output_id (mid)
|
||
int mid;
|
||
{
|
||
static char foobar [20];
|
||
|
||
if (mid > 0)
|
||
sprintf (foobar, "mid %d", mid);
|
||
else if (mid < 0)
|
||
sprintf (foobar, "@%d", -(mid+1));
|
||
else
|
||
sprintf (foobar, "*any thread*");
|
||
|
||
return foobar;
|
||
}
|
||
#endif /* THREAD_OUTPUT_ID */
|
||
|
||
/* Called with hook PREPARE_TO_PROCEED() from infrun.c.
|
||
*
|
||
* If we have switched threads and stopped at breakpoint return 1 otherwise 0.
|
||
*
|
||
* if SELECT_IT is nonzero, reselect the thread that was active when
|
||
* we stopped at a breakpoint.
|
||
*
|
||
*/
|
||
|
||
mach3_prepare_to_proceed (select_it)
|
||
int select_it;
|
||
{
|
||
if (stop_thread &&
|
||
stop_thread != current_thread &&
|
||
stop_exception == EXC_BREAKPOINT)
|
||
{
|
||
int mid;
|
||
|
||
if (! select_it)
|
||
return 1;
|
||
|
||
mid = switch_to_thread (stop_thread);
|
||
|
||
return 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* this stuff here is an upcall via libmach/excServer.c
|
||
and mach_really_wait which does the actual upcall.
|
||
|
||
The code will pass the exception to the inferior if:
|
||
|
||
- The task that signaled is not the inferior task
|
||
(e.g. when debugging another debugger)
|
||
|
||
- The user has explicitely requested to pass on the exceptions.
|
||
(e.g to the default unix exception handler, which maps
|
||
exceptions to signals, or the user has her own exception handler)
|
||
|
||
- If the thread that signaled is being single-stepped and it
|
||
has set it's own exception port and the exception is not
|
||
EXC_BREAKPOINT. (Maybe this is not desirable?)
|
||
*/
|
||
|
||
kern_return_t
|
||
catch_exception_raise (port, thread, task, exception, code, subcode)
|
||
mach_port_t port;
|
||
thread_t thread;
|
||
task_t task;
|
||
int exception, code, subcode;
|
||
{
|
||
kern_return_t ret;
|
||
boolean_t signal_thread;
|
||
int mid = map_port_name_to_mid (thread, MACH_TYPE_THREAD);
|
||
|
||
if (! MACH_PORT_VALID (thread))
|
||
{
|
||
/* If the exception was sent and thread dies before we
|
||
receive it, THREAD will be MACH_PORT_DEAD
|
||
*/
|
||
|
||
current_thread = thread = MACH_PORT_NULL;
|
||
error ("Received exception from nonexistent thread");
|
||
}
|
||
|
||
/* Check if the task died in transit.
|
||
* @@ Isn't the thread also invalid in such case?
|
||
*/
|
||
if (! MACH_PORT_VALID (task))
|
||
{
|
||
current_thread = thread = MACH_PORT_NULL;
|
||
error ("Received exception from nonexistent task");
|
||
}
|
||
|
||
if (exception < 0 || exception > MAX_EXCEPTION)
|
||
fatal ("catch_exception_raise: unknown exception code %d thread %d",
|
||
exception,
|
||
mid);
|
||
|
||
if (! MACH_PORT_VALID (inferior_task))
|
||
error ("got an exception, but inferior_task is null or dead");
|
||
|
||
stop_exception = exception;
|
||
stop_code = code;
|
||
stop_subcode = subcode;
|
||
stop_thread = thread;
|
||
|
||
signal_thread = exception != EXC_BREAKPOINT &&
|
||
port == singlestepped_thread_port &&
|
||
MACH_PORT_VALID (thread_saved_exception_port);
|
||
|
||
/* If it was not our inferior or if we want to forward
|
||
* the exception to the inferior's handler, do it here
|
||
*
|
||
* Note: If you have forwarded EXC_BREAKPOINT I trust you know why.
|
||
*/
|
||
if (task != inferior_task ||
|
||
signal_thread ||
|
||
exception_map [exception].forward)
|
||
{
|
||
mach_port_t eport = inferior_old_exception_port;
|
||
|
||
if (signal_thread)
|
||
{
|
||
/*
|
||
GDB now forwards the exeption to thread's original handler,
|
||
since the user propably knows what he is doing.
|
||
Give a message, though.
|
||
*/
|
||
|
||
mach3_exception_actions ((WAITTYPE *)NULL, TRUE, "Thread");
|
||
eport = thread_saved_exception_port;
|
||
}
|
||
|
||
/* Send the exception to the original handler */
|
||
ret = exception_raise (eport,
|
||
thread,
|
||
task,
|
||
exception,
|
||
code,
|
||
subcode);
|
||
|
||
(void) mach_port_deallocate (mach_task_self (), task);
|
||
(void) mach_port_deallocate (mach_task_self (), thread);
|
||
|
||
/* If we come here, we don't want to trace any more, since we
|
||
* will never stop for tracing anyway.
|
||
*/
|
||
discard_single_step (thread);
|
||
|
||
/* Do not stop the inferior */
|
||
return ret;
|
||
}
|
||
|
||
/* Now gdb handles the exception */
|
||
stopped_in_exception = TRUE;
|
||
|
||
ret = task_suspend (task);
|
||
CHK ("Error suspending inferior after exception", ret);
|
||
|
||
must_suspend_thread = 0;
|
||
|
||
if (current_thread != thread)
|
||
{
|
||
if (MACH_PORT_VALID (singlestepped_thread_port))
|
||
/* Cleanup discards single stepping */
|
||
error ("Exception from thread %d while singlestepping thread %d",
|
||
mid,
|
||
map_port_name_to_mid (current_thread, MACH_TYPE_THREAD));
|
||
|
||
/* Then select the thread that caused the exception */
|
||
if (select_thread (inferior_task, mid, 0) != KERN_SUCCESS)
|
||
error ("Could not select thread %d causing exception", mid);
|
||
else
|
||
warning ("Gdb selected thread %d", mid);
|
||
}
|
||
|
||
/* If we receive an exception that is not breakpoint
|
||
* exception, we interrupt the single step and return to
|
||
* debugger. Trace condition is cleared.
|
||
*/
|
||
if (MACH_PORT_VALID (singlestepped_thread_port))
|
||
{
|
||
if (stop_exception != EXC_BREAKPOINT)
|
||
warning ("Single step interrupted by exception");
|
||
else if (port == singlestepped_thread_port)
|
||
{
|
||
/* Single step exception occurred, remove trace bit
|
||
* and return to gdb.
|
||
*/
|
||
if (! MACH_PORT_VALID (current_thread))
|
||
error ("Single stepped thread is not valid");
|
||
|
||
/* Resume threads, but leave the task suspended */
|
||
resume_all_threads (0);
|
||
}
|
||
else
|
||
warning ("Breakpoint while single stepping?");
|
||
|
||
discard_single_step (current_thread);
|
||
}
|
||
|
||
(void) mach_port_deallocate (mach_task_self (), task);
|
||
(void) mach_port_deallocate (mach_task_self (), thread);
|
||
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
int
|
||
port_valid (port, mask)
|
||
mach_port_t port;
|
||
int mask;
|
||
{
|
||
kern_return_t ret;
|
||
mach_port_type_t type;
|
||
|
||
ret = mach_port_type (mach_task_self (),
|
||
port,
|
||
&type);
|
||
if (ret != KERN_SUCCESS || (type & mask) != mask)
|
||
return 0;
|
||
return 1;
|
||
}
|
||
|
||
/* @@ No vm read cache implemented yet */
|
||
boolean_t vm_read_cache_valid = FALSE;
|
||
|
||
/*
|
||
* Read inferior task's LEN bytes from ADDR and copy it to MYADDR
|
||
* in gdb's address space.
|
||
*
|
||
* Return 0 on failure; number of bytes read otherwise.
|
||
*/
|
||
int
|
||
mach3_read_inferior (addr, myaddr, length)
|
||
CORE_ADDR addr;
|
||
char *myaddr;
|
||
int length;
|
||
{
|
||
kern_return_t ret;
|
||
vm_address_t low_address = (vm_address_t) trunc_page (addr);
|
||
vm_size_t aligned_length =
|
||
(vm_size_t) round_page (addr+length) - low_address;
|
||
pointer_t copied_memory;
|
||
int copy_count;
|
||
|
||
/* Get memory from inferior with page aligned addresses */
|
||
ret = vm_read (inferior_task,
|
||
low_address,
|
||
aligned_length,
|
||
&copied_memory,
|
||
©_count);
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
/* the problem is that the inferior might be killed for whatever reason
|
||
* before we go to mach_really_wait. This is one place that ought to
|
||
* catch many of those errors.
|
||
* @@ A better fix would be to make all external events to GDB
|
||
* to arrive via a SINGLE port set. (Including user input!)
|
||
*/
|
||
|
||
if (! port_valid (inferior_task, MACH_PORT_TYPE_SEND))
|
||
{
|
||
m3_kill_inferior ();
|
||
error ("Inferior killed (task port invalid)");
|
||
}
|
||
else
|
||
{
|
||
#ifdef OSF
|
||
extern int errno;
|
||
/* valprint.c gives nicer format if this does not
|
||
screw it. Eamonn seems to like this, so I enable
|
||
it if OSF is defined...
|
||
*/
|
||
warning ("[read inferior %x failed: %s]",
|
||
addr, mach_error_string (ret));
|
||
errno = 0;
|
||
#endif
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
memcpy (myaddr, (char *)addr - low_address + copied_memory, length);
|
||
|
||
ret = vm_deallocate (mach_task_self (),
|
||
copied_memory,
|
||
copy_count);
|
||
CHK("mach3_read_inferior vm_deallocate failed", ret);
|
||
|
||
return length;
|
||
}
|
||
|
||
#ifdef __STDC__
|
||
#define CHK_GOTO_OUT(str,ret) \
|
||
do if (ret != KERN_SUCCESS) { errstr = #str; goto out; } while(0)
|
||
#else
|
||
#define CHK_GOTO_OUT(str,ret) \
|
||
do if (ret != KERN_SUCCESS) { errstr = str; goto out; } while(0)
|
||
#endif
|
||
|
||
struct vm_region_list {
|
||
struct vm_region_list *next;
|
||
vm_prot_t protection;
|
||
vm_address_t start;
|
||
vm_size_t length;
|
||
};
|
||
|
||
struct obstack region_obstack;
|
||
|
||
/*
|
||
* Write inferior task's LEN bytes from ADDR and copy it to MYADDR
|
||
* in gdb's address space.
|
||
*/
|
||
int
|
||
mach3_write_inferior (addr, myaddr, length)
|
||
CORE_ADDR addr;
|
||
char *myaddr;
|
||
int length;
|
||
{
|
||
kern_return_t ret;
|
||
vm_address_t low_address = (vm_address_t) trunc_page (addr);
|
||
vm_size_t aligned_length =
|
||
(vm_size_t) round_page (addr+length) - low_address;
|
||
pointer_t copied_memory;
|
||
int copy_count;
|
||
int deallocate = 0;
|
||
|
||
char *errstr = "Bug in mach3_write_inferior";
|
||
|
||
struct vm_region_list *region_element;
|
||
struct vm_region_list *region_head = (struct vm_region_list *)NULL;
|
||
|
||
/* Get memory from inferior with page aligned addresses */
|
||
ret = vm_read (inferior_task,
|
||
low_address,
|
||
aligned_length,
|
||
&copied_memory,
|
||
©_count);
|
||
CHK_GOTO_OUT ("mach3_write_inferior vm_read failed", ret);
|
||
|
||
deallocate++;
|
||
|
||
memcpy ((char *)addr - low_address + copied_memory, myaddr, length);
|
||
|
||
obstack_init (®ion_obstack);
|
||
|
||
/* Do writes atomically.
|
||
* First check for holes and unwritable memory.
|
||
*/
|
||
{
|
||
vm_size_t remaining_length = aligned_length;
|
||
vm_address_t region_address = low_address;
|
||
|
||
struct vm_region_list *scan;
|
||
|
||
while(region_address < low_address + aligned_length)
|
||
{
|
||
vm_prot_t protection;
|
||
vm_prot_t max_protection;
|
||
vm_inherit_t inheritance;
|
||
boolean_t shared;
|
||
mach_port_t object_name;
|
||
vm_offset_t offset;
|
||
vm_size_t region_length = remaining_length;
|
||
vm_address_t old_address = region_address;
|
||
|
||
ret = vm_region (inferior_task,
|
||
®ion_address,
|
||
®ion_length,
|
||
&protection,
|
||
&max_protection,
|
||
&inheritance,
|
||
&shared,
|
||
&object_name,
|
||
&offset);
|
||
CHK_GOTO_OUT ("vm_region failed", ret);
|
||
|
||
/* Check for holes in memory */
|
||
if (old_address != region_address)
|
||
{
|
||
warning ("No memory at 0x%x. Nothing written",
|
||
old_address);
|
||
ret = KERN_SUCCESS;
|
||
length = 0;
|
||
goto out;
|
||
}
|
||
|
||
if (!(max_protection & VM_PROT_WRITE))
|
||
{
|
||
warning ("Memory at address 0x%x is unwritable. Nothing written",
|
||
old_address);
|
||
ret = KERN_SUCCESS;
|
||
length = 0;
|
||
goto out;
|
||
}
|
||
|
||
/* Chain the regions for later use */
|
||
region_element =
|
||
(struct vm_region_list *)
|
||
obstack_alloc (®ion_obstack, sizeof (struct vm_region_list));
|
||
|
||
region_element->protection = protection;
|
||
region_element->start = region_address;
|
||
region_element->length = region_length;
|
||
|
||
/* Chain the regions along with protections */
|
||
region_element->next = region_head;
|
||
region_head = region_element;
|
||
|
||
region_address += region_length;
|
||
remaining_length = remaining_length - region_length;
|
||
}
|
||
|
||
/* If things fail after this, we give up.
|
||
* Somebody is messing up inferior_task's mappings.
|
||
*/
|
||
|
||
/* Enable writes to the chained vm regions */
|
||
for (scan = region_head; scan; scan = scan->next)
|
||
{
|
||
boolean_t protection_changed = FALSE;
|
||
|
||
if (!(scan->protection & VM_PROT_WRITE))
|
||
{
|
||
ret = vm_protect (inferior_task,
|
||
scan->start,
|
||
scan->length,
|
||
FALSE,
|
||
scan->protection | VM_PROT_WRITE);
|
||
CHK_GOTO_OUT ("vm_protect: enable write failed", ret);
|
||
}
|
||
}
|
||
|
||
ret = vm_write (inferior_task,
|
||
low_address,
|
||
copied_memory,
|
||
aligned_length);
|
||
CHK_GOTO_OUT ("vm_write failed", ret);
|
||
|
||
/* Set up the original region protections, if they were changed */
|
||
for (scan = region_head; scan; scan = scan->next)
|
||
{
|
||
boolean_t protection_changed = FALSE;
|
||
|
||
if (!(scan->protection & VM_PROT_WRITE))
|
||
{
|
||
ret = vm_protect (inferior_task,
|
||
scan->start,
|
||
scan->length,
|
||
FALSE,
|
||
scan->protection);
|
||
CHK_GOTO_OUT ("vm_protect: enable write failed", ret);
|
||
}
|
||
}
|
||
}
|
||
|
||
out:
|
||
if (deallocate)
|
||
{
|
||
obstack_free (®ion_obstack, 0);
|
||
|
||
(void) vm_deallocate (mach_task_self (),
|
||
copied_memory,
|
||
copy_count);
|
||
}
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("%s %s", errstr, mach_error_string (ret));
|
||
return 0;
|
||
}
|
||
|
||
return length;
|
||
}
|
||
|
||
/* Return 0 on failure, number of bytes handled otherwise. */
|
||
static int
|
||
m3_xfer_memory (memaddr, myaddr, len, write, target)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int write;
|
||
struct target_ops *target; /* IGNORED */
|
||
{
|
||
int result;
|
||
|
||
if (write)
|
||
result = mach3_write_inferior (memaddr, myaddr, len);
|
||
else
|
||
result = mach3_read_inferior (memaddr, myaddr, len);
|
||
|
||
return result;
|
||
}
|
||
|
||
|
||
static char *
|
||
translate_state(state)
|
||
int state;
|
||
{
|
||
switch (state) {
|
||
case TH_STATE_RUNNING: return("R");
|
||
case TH_STATE_STOPPED: return("S");
|
||
case TH_STATE_WAITING: return("W");
|
||
case TH_STATE_UNINTERRUPTIBLE: return("U");
|
||
case TH_STATE_HALTED: return("H");
|
||
default: return("?");
|
||
}
|
||
}
|
||
|
||
static char *
|
||
translate_cstate (state)
|
||
int state;
|
||
{
|
||
switch (state)
|
||
{
|
||
case CPROC_RUNNING: return "R";
|
||
case CPROC_SWITCHING: return "S";
|
||
case CPROC_BLOCKED: return "B";
|
||
case CPROC_CONDWAIT: return "C";
|
||
case CPROC_CONDWAIT|CPROC_SWITCHING: return "CS";
|
||
default: return "?";
|
||
}
|
||
}
|
||
|
||
/* type == MACH_MSG_TYPE_COPY_SEND || type == MACH_MSG_TYPE_MAKE_SEND */
|
||
|
||
mach_port_t /* no mach_port_name_t found in include files. */
|
||
map_inferior_port_name (inferior_name, type)
|
||
mach_port_t inferior_name;
|
||
mach_msg_type_name_t type;
|
||
{
|
||
kern_return_t ret;
|
||
mach_msg_type_name_t acquired;
|
||
mach_port_t iport;
|
||
|
||
ret = mach_port_extract_right (inferior_task,
|
||
inferior_name,
|
||
type,
|
||
&iport,
|
||
&acquired);
|
||
CHK("mach_port_extract_right (map_inferior_port_name)", ret);
|
||
|
||
if (acquired != MACH_MSG_TYPE_PORT_SEND)
|
||
error("Incorrect right extracted, (map_inferior_port_name)");
|
||
|
||
ret = mach_port_deallocate (mach_task_self (),
|
||
iport);
|
||
CHK ("Deallocating mapped port (map_inferior_port_name)", ret);
|
||
|
||
return iport;
|
||
}
|
||
|
||
/*
|
||
* Naming convention:
|
||
* Always return user defined name if found.
|
||
* _K == A kernel thread with no matching CPROC
|
||
* _C == A cproc with no current cthread
|
||
* _t == A cthread with no user defined name
|
||
*
|
||
* The digits that follow the _names are the SLOT number of the
|
||
* kernel thread if there is such a thing, otherwise just a negation
|
||
* of the sequential number of such cprocs.
|
||
*/
|
||
|
||
static char buf[7];
|
||
|
||
static char *
|
||
get_thread_name (one_cproc, id)
|
||
gdb_thread_t one_cproc;
|
||
int id;
|
||
{
|
||
if (one_cproc)
|
||
if (one_cproc->cthread == NULL)
|
||
{
|
||
/* cproc not mapped to any cthread */
|
||
sprintf(buf, "_C%d", id);
|
||
}
|
||
else if (! one_cproc->cthread->name)
|
||
{
|
||
/* cproc and cthread, but no name */
|
||
sprintf(buf, "_t%d", id);
|
||
}
|
||
else
|
||
return (char *)(one_cproc->cthread->name);
|
||
else
|
||
{
|
||
if (id < 0)
|
||
warning ("Inconsistency in thread name id %d", id);
|
||
|
||
/* Kernel thread without cproc */
|
||
sprintf(buf, "_K%d", id);
|
||
}
|
||
|
||
return buf;
|
||
}
|
||
|
||
int
|
||
fetch_thread_info (task, mthreads_out)
|
||
mach_port_t task;
|
||
gdb_thread_t *mthreads_out; /* out */
|
||
{
|
||
kern_return_t ret;
|
||
thread_array_t th_table;
|
||
int th_count;
|
||
gdb_thread_t mthreads = NULL;
|
||
int index;
|
||
|
||
ret = task_threads (task, &th_table, &th_count);
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Error getting inferior's thread list:%s",
|
||
mach_error_string(ret));
|
||
m3_kill_inferior ();
|
||
return -1;
|
||
}
|
||
|
||
mthreads = (gdb_thread_t)
|
||
obstack_alloc
|
||
(cproc_obstack,
|
||
th_count * sizeof (struct gdb_thread));
|
||
|
||
for (index = 0; index < th_count; index++)
|
||
{
|
||
thread_t saved_thread = MACH_PORT_NULL;
|
||
int mid;
|
||
|
||
if (must_suspend_thread)
|
||
setup_thread (th_table[ index ], 1);
|
||
|
||
if (th_table[index] != current_thread)
|
||
{
|
||
saved_thread = current_thread;
|
||
|
||
mid = switch_to_thread (th_table[ index ]);
|
||
}
|
||
|
||
mthreads[index].name = th_table[index];
|
||
mthreads[index].cproc = NULL; /* map_cprocs_to_kernel_threads() */
|
||
mthreads[index].in_emulator = FALSE;
|
||
mthreads[index].slotid = index;
|
||
|
||
mthreads[index].sp = read_register (SP_REGNUM);
|
||
mthreads[index].fp = read_register (FP_REGNUM);
|
||
mthreads[index].pc = read_pc ();
|
||
|
||
if (MACH_PORT_VALID (saved_thread))
|
||
mid = switch_to_thread (saved_thread);
|
||
|
||
if (must_suspend_thread)
|
||
setup_thread (th_table[ index ], 0);
|
||
}
|
||
|
||
consume_send_rights (th_table, th_count);
|
||
ret = vm_deallocate (mach_task_self(), (vm_address_t)th_table,
|
||
(th_count * sizeof(mach_port_t)));
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Error trying to deallocate thread list : %s",
|
||
mach_error_string (ret));
|
||
}
|
||
|
||
*mthreads_out = mthreads;
|
||
|
||
return th_count;
|
||
}
|
||
|
||
|
||
/*
|
||
* Current emulator always saves the USP on top of
|
||
* emulator stack below struct emul_stack_top stuff.
|
||
*/
|
||
CORE_ADDR
|
||
fetch_usp_from_emulator_stack (sp)
|
||
CORE_ADDR sp;
|
||
{
|
||
CORE_ADDR stack_pointer;
|
||
|
||
sp = (sp & ~(EMULATOR_STACK_SIZE-1)) +
|
||
EMULATOR_STACK_SIZE - sizeof (struct emul_stack_top);
|
||
|
||
if (mach3_read_inferior (sp,
|
||
&stack_pointer,
|
||
sizeof (CORE_ADDR)) != sizeof (CORE_ADDR))
|
||
{
|
||
warning ("Can't read user sp from emulator stack address 0x%x", sp);
|
||
return 0;
|
||
}
|
||
|
||
return stack_pointer;
|
||
}
|
||
|
||
#ifdef MK67
|
||
|
||
/* get_emulation_vector() interface was changed after mk67 */
|
||
#define EMUL_VECTOR_COUNT 400 /* Value does not matter too much */
|
||
|
||
#endif /* MK67 */
|
||
|
||
/* Check if the emulator exists at task's address space.
|
||
*/
|
||
boolean_t
|
||
have_emulator_p (task)
|
||
task_t task;
|
||
{
|
||
kern_return_t ret;
|
||
#ifndef EMUL_VECTOR_COUNT
|
||
vm_offset_t *emulation_vector;
|
||
int n;
|
||
#else
|
||
vm_offset_t emulation_vector[ EMUL_VECTOR_COUNT ];
|
||
int n = EMUL_VECTOR_COUNT;
|
||
#endif
|
||
int i;
|
||
int vector_start;
|
||
|
||
ret = task_get_emulation_vector (task,
|
||
&vector_start,
|
||
#ifndef EMUL_VECTOR_COUNT
|
||
&emulation_vector,
|
||
#else
|
||
emulation_vector,
|
||
#endif
|
||
&n);
|
||
CHK("task_get_emulation_vector", ret);
|
||
xx_debug ("%d vectors from %d at 0x%08x\n",
|
||
n, vector_start, emulation_vector);
|
||
|
||
for(i = 0; i < n; i++)
|
||
{
|
||
vm_offset_t entry = emulation_vector [i];
|
||
|
||
if (EMULATOR_BASE <= entry && entry <= EMULATOR_END)
|
||
return TRUE;
|
||
else if (entry)
|
||
{
|
||
static boolean_t informed = FALSE;
|
||
if (!informed)
|
||
{
|
||
warning("Emulation vector address 0x08%x outside emulator space",
|
||
entry);
|
||
informed = TRUE;
|
||
}
|
||
}
|
||
}
|
||
return FALSE;
|
||
}
|
||
|
||
/* Map cprocs to kernel threads and vice versa. */
|
||
|
||
void
|
||
map_cprocs_to_kernel_threads (cprocs, mthreads, thread_count)
|
||
gdb_thread_t cprocs;
|
||
gdb_thread_t mthreads;
|
||
int thread_count;
|
||
{
|
||
int index;
|
||
gdb_thread_t scan;
|
||
boolean_t all_mapped = TRUE;
|
||
LONGEST stack_base;
|
||
LONGEST stack_size;
|
||
|
||
for (scan = cprocs; scan; scan = scan->next)
|
||
{
|
||
/* Default to: no kernel thread for this cproc */
|
||
scan->reverse_map = -1;
|
||
|
||
/* Check if the cproc is found by its stack */
|
||
for (index = 0; index < thread_count; index++)
|
||
{
|
||
stack_base =
|
||
extract_signed_integer (scan->raw_cproc + CPROC_BASE_OFFSET,
|
||
CPROC_BASE_SIZE);
|
||
stack_size =
|
||
extract_signed_integer (scan->raw_cproc + CPROC_SIZE_OFFSET,
|
||
CPROC_SIZE_SIZE);
|
||
if ((mthreads + index)->sp > stack_base &&
|
||
(mthreads + index)->sp <= stack_base + stack_size)
|
||
{
|
||
(mthreads + index)->cproc = scan;
|
||
scan->reverse_map = index;
|
||
break;
|
||
}
|
||
}
|
||
all_mapped &= (scan->reverse_map != -1);
|
||
}
|
||
|
||
/* Check for threads that are currently in the emulator.
|
||
* If so, they have a different stack, and the still unmapped
|
||
* cprocs may well get mapped to these threads.
|
||
*
|
||
* If:
|
||
* - cproc stack does not match any kernel thread stack pointer
|
||
* - there is at least one extra kernel thread
|
||
* that has no cproc mapped above.
|
||
* - some kernel thread stack pointer points to emulator space
|
||
* then we find the user stack pointer saved in the emulator
|
||
* stack, and try to map that to the cprocs.
|
||
*
|
||
* Also set in_emulator for kernel threads.
|
||
*/
|
||
|
||
if (emulator_present)
|
||
{
|
||
for (index = 0; index < thread_count; index++)
|
||
{
|
||
CORE_ADDR emul_sp;
|
||
CORE_ADDR usp;
|
||
|
||
gdb_thread_t mthread = (mthreads+index);
|
||
emul_sp = mthread->sp;
|
||
|
||
if (mthread->cproc == NULL &&
|
||
EMULATOR_BASE <= emul_sp && emul_sp <= EMULATOR_END)
|
||
{
|
||
mthread->in_emulator = emulator_present;
|
||
|
||
if (!all_mapped && cprocs)
|
||
{
|
||
usp = fetch_usp_from_emulator_stack (emul_sp);
|
||
|
||
/* @@ Could be more accurate */
|
||
if (! usp)
|
||
error ("Zero stack pointer read from emulator?");
|
||
|
||
/* Try to match this stack pointer to the cprocs that
|
||
* don't yet have a kernel thread.
|
||
*/
|
||
for (scan = cprocs; scan; scan = scan->next)
|
||
{
|
||
|
||
/* Check is this unmapped CPROC stack contains
|
||
* the user stack pointer saved in the
|
||
* emulator.
|
||
*/
|
||
if (scan->reverse_map == -1)
|
||
{
|
||
stack_base =
|
||
extract_signed_integer
|
||
(scan->raw_cproc + CPROC_BASE_OFFSET,
|
||
CPROC_BASE_SIZE);
|
||
stack_size =
|
||
extract_signed_integer
|
||
(scan->raw_cproc + CPROC_SIZE_OFFSET,
|
||
CPROC_SIZE_SIZE);
|
||
if (usp > stack_base &&
|
||
usp <= stack_base + stack_size)
|
||
{
|
||
mthread->cproc = scan;
|
||
scan->reverse_map = index;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Format of the thread_list command
|
||
*
|
||
* slot mid sel name emul ks susp cstate wired address
|
||
*/
|
||
#define TL_FORMAT "%-2.2s %5d%c %-10.10s %1.1s%s%-5.5s %-2.2s %-5.5s "
|
||
|
||
#define TL_HEADER "\n@ MID Name KState CState Where\n"
|
||
|
||
void
|
||
print_tl_address (stream, pc)
|
||
GDB_FILE *stream;
|
||
CORE_ADDR pc;
|
||
{
|
||
if (! lookup_minimal_symbol_by_pc (pc))
|
||
fprintf_filtered (stream, local_hex_format(), pc);
|
||
else
|
||
{
|
||
extern int addressprint;
|
||
extern int asm_demangle;
|
||
|
||
int store = addressprint;
|
||
addressprint = 0;
|
||
print_address_symbolic (pc, stream, asm_demangle, "");
|
||
addressprint = store;
|
||
}
|
||
}
|
||
|
||
/* For thread names, but also for gdb_message_port external name */
|
||
#define MAX_NAME_LEN 50
|
||
|
||
/* Returns the address of variable NAME or 0 if not found */
|
||
CORE_ADDR
|
||
lookup_address_of_variable (name)
|
||
char *name;
|
||
{
|
||
struct symbol *sym;
|
||
CORE_ADDR symaddr = 0;
|
||
struct minimal_symbol *msymbol;
|
||
|
||
sym = lookup_symbol (name,
|
||
(struct block *)NULL,
|
||
VAR_NAMESPACE,
|
||
(int *)NULL,
|
||
(struct symtab **)NULL);
|
||
|
||
if (sym)
|
||
symaddr = SYMBOL_VALUE (sym);
|
||
|
||
if (! symaddr)
|
||
{
|
||
msymbol = lookup_minimal_symbol (name, NULL, NULL);
|
||
|
||
if (msymbol && msymbol->type == mst_data)
|
||
symaddr = SYMBOL_VALUE_ADDRESS (msymbol);
|
||
}
|
||
|
||
return symaddr;
|
||
}
|
||
|
||
static gdb_thread_t
|
||
get_cprocs()
|
||
{
|
||
gdb_thread_t cproc_head;
|
||
gdb_thread_t cproc_copy;
|
||
CORE_ADDR their_cprocs;
|
||
char *buf[TARGET_PTR_BIT / HOST_CHAR_BIT];
|
||
char *name;
|
||
cthread_t cthread;
|
||
CORE_ADDR symaddr;
|
||
|
||
symaddr = lookup_address_of_variable ("cproc_list");
|
||
|
||
if (! symaddr)
|
||
{
|
||
/* cproc_list is not in a file compiled with debugging
|
||
symbols, but don't give up yet */
|
||
|
||
symaddr = lookup_address_of_variable ("cprocs");
|
||
|
||
if (symaddr)
|
||
{
|
||
static int informed = 0;
|
||
if (!informed)
|
||
{
|
||
informed++;
|
||
warning ("Your program is loaded with an old threads library.");
|
||
warning ("GDB does not know the old form of threads");
|
||
warning ("so things may not work.");
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Stripped or no -lthreads loaded or "cproc_list" is in wrong segment. */
|
||
if (! symaddr)
|
||
return NULL;
|
||
|
||
/* Get the address of the first cproc in the task */
|
||
if (!mach3_read_inferior (symaddr,
|
||
buf,
|
||
TARGET_PTR_BIT / HOST_CHAR_BIT))
|
||
error ("Can't read cproc master list at address (0x%x).", symaddr);
|
||
their_cprocs = extract_address (buf, TARGET_PTR_BIT / HOST_CHAR_BIT);
|
||
|
||
/* Scan the CPROCs in the task.
|
||
CPROCs are chained with LIST field, not NEXT field, which
|
||
chains mutexes, condition variables and queues */
|
||
|
||
cproc_head = NULL;
|
||
|
||
while (their_cprocs != (CORE_ADDR)0)
|
||
{
|
||
CORE_ADDR cproc_copy_incarnation;
|
||
cproc_copy = (gdb_thread_t) obstack_alloc (cproc_obstack,
|
||
sizeof (struct gdb_thread));
|
||
|
||
if (!mach3_read_inferior (their_cprocs,
|
||
&cproc_copy->raw_cproc[0],
|
||
CPROC_SIZE))
|
||
error("Can't read next cproc at 0x%x.", their_cprocs);
|
||
|
||
their_cprocs =
|
||
extract_address (cproc_copy->raw_cproc + CPROC_LIST_OFFSET,
|
||
CPROC_LIST_SIZE);
|
||
cproc_copy_incarnation =
|
||
extract_address (cproc_copy->raw_cproc + CPROC_INCARNATION_OFFSET,
|
||
CPROC_INCARNATION_SIZE);
|
||
|
||
if (cproc_copy_incarnation == (CORE_ADDR)0)
|
||
cproc_copy->cthread = NULL;
|
||
else
|
||
{
|
||
/* This CPROC has an attached CTHREAD. Get its name */
|
||
cthread = (cthread_t)obstack_alloc (cproc_obstack,
|
||
sizeof(struct cthread));
|
||
|
||
if (!mach3_read_inferior (cproc_copy_incarnation,
|
||
cthread,
|
||
sizeof(struct cthread)))
|
||
error("Can't read next thread at 0x%x.",
|
||
cproc_copy_incarnation);
|
||
|
||
cproc_copy->cthread = cthread;
|
||
|
||
if (cthread->name)
|
||
{
|
||
name = (char *) obstack_alloc (cproc_obstack, MAX_NAME_LEN);
|
||
|
||
if (!mach3_read_inferior(cthread->name, name, MAX_NAME_LEN))
|
||
error("Can't read next thread's name at 0x%x.", cthread->name);
|
||
|
||
cthread->name = name;
|
||
}
|
||
}
|
||
|
||
/* insert in front */
|
||
cproc_copy->next = cproc_head;
|
||
cproc_head = cproc_copy;
|
||
}
|
||
return cproc_head;
|
||
}
|
||
|
||
#ifndef FETCH_CPROC_STATE
|
||
/*
|
||
* Check if your machine does not grok the way this routine
|
||
* fetches the FP,PC and SP of a cproc that is not
|
||
* currently attached to any kernel thread (e.g. its cproc.context
|
||
* field points to the place in stack where the context
|
||
* is saved).
|
||
*
|
||
* If it doesn't, define your own routine.
|
||
*/
|
||
#define FETCH_CPROC_STATE(mth) mach3_cproc_state (mth)
|
||
|
||
int
|
||
mach3_cproc_state (mthread)
|
||
gdb_thread_t mthread;
|
||
{
|
||
int context;
|
||
|
||
if (! mthread || !mthread->cproc)
|
||
return -1;
|
||
|
||
context = extract_signed_integer
|
||
(mthread->cproc->raw_cproc + CPROC_CONTEXT_OFFSET,
|
||
CPROC_CONTEXT_SIZE);
|
||
if (context == 0)
|
||
return -1;
|
||
|
||
mthread->sp = context + MACHINE_CPROC_SP_OFFSET;
|
||
|
||
if (mach3_read_inferior (context + MACHINE_CPROC_PC_OFFSET,
|
||
&mthread->pc,
|
||
sizeof (CORE_ADDR)) != sizeof (CORE_ADDR))
|
||
{
|
||
warning ("Can't read cproc pc from inferior");
|
||
return -1;
|
||
}
|
||
|
||
if (mach3_read_inferior (context + MACHINE_CPROC_FP_OFFSET,
|
||
&mthread->fp,
|
||
sizeof (CORE_ADDR)) != sizeof (CORE_ADDR))
|
||
{
|
||
warning ("Can't read cproc fp from inferior");
|
||
return -1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
#endif /* FETCH_CPROC_STATE */
|
||
|
||
|
||
void
|
||
thread_list_command()
|
||
{
|
||
thread_basic_info_data_t ths;
|
||
int thread_count;
|
||
gdb_thread_t cprocs;
|
||
gdb_thread_t scan;
|
||
int index;
|
||
char *name;
|
||
char selected;
|
||
char *wired;
|
||
int infoCnt;
|
||
kern_return_t ret;
|
||
mach_port_t mid_or_port;
|
||
gdb_thread_t their_threads;
|
||
gdb_thread_t kthread;
|
||
|
||
int neworder = 1;
|
||
|
||
char *fmt = "There are %d kernel threads in task %d.\n";
|
||
|
||
int tmid = map_port_name_to_mid (inferior_task, MACH_TYPE_TASK);
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
thread_count = fetch_thread_info (inferior_task,
|
||
&their_threads);
|
||
if (thread_count == -1)
|
||
return;
|
||
|
||
if (thread_count == 1)
|
||
fmt = "There is %d kernel thread in task %d.\n";
|
||
|
||
printf_filtered (fmt, thread_count, tmid);
|
||
|
||
puts_filtered (TL_HEADER);
|
||
|
||
cprocs = get_cprocs();
|
||
|
||
map_cprocs_to_kernel_threads (cprocs, their_threads, thread_count);
|
||
|
||
for (scan = cprocs; scan; scan = scan->next)
|
||
{
|
||
int mid;
|
||
char buf[10];
|
||
char slot[3];
|
||
int cproc_state =
|
||
extract_signed_integer
|
||
(scan->raw_cproc + CPROC_STATE_OFFSET, CPROC_STATE_SIZE);
|
||
|
||
selected = ' ';
|
||
|
||
/* a wired cproc? */
|
||
wired = (extract_address (scan->raw_cproc + CPROC_WIRED_OFFSET,
|
||
CPROC_WIRED_SIZE)
|
||
? "wired" : "");
|
||
|
||
if (scan->reverse_map != -1)
|
||
kthread = (their_threads + scan->reverse_map);
|
||
else
|
||
kthread = NULL;
|
||
|
||
if (kthread)
|
||
{
|
||
/* These cprocs have a kernel thread */
|
||
|
||
mid = map_port_name_to_mid (kthread->name, MACH_TYPE_THREAD);
|
||
|
||
infoCnt = THREAD_BASIC_INFO_COUNT;
|
||
|
||
ret = thread_info (kthread->name,
|
||
THREAD_BASIC_INFO,
|
||
(thread_info_t)&ths,
|
||
&infoCnt);
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Unable to get basic info on thread %d : %s",
|
||
mid,
|
||
mach_error_string (ret));
|
||
continue;
|
||
}
|
||
|
||
/* Who is the first to have more than 100 threads */
|
||
sprintf (slot, "%d", kthread->slotid%100);
|
||
|
||
if (kthread->name == current_thread)
|
||
selected = '*';
|
||
|
||
if (ths.suspend_count)
|
||
sprintf (buf, "%d", ths.suspend_count);
|
||
else
|
||
buf[0] = '\000';
|
||
|
||
#if 0
|
||
if (ths.flags & TH_FLAGS_SWAPPED)
|
||
strcat (buf, "S");
|
||
#endif
|
||
|
||
if (ths.flags & TH_FLAGS_IDLE)
|
||
strcat (buf, "I");
|
||
|
||
printf_filtered (TL_FORMAT,
|
||
slot,
|
||
mid,
|
||
selected,
|
||
get_thread_name (scan, kthread->slotid),
|
||
kthread->in_emulator ? "E" : "",
|
||
translate_state (ths.run_state),
|
||
buf,
|
||
translate_cstate (cproc_state),
|
||
wired);
|
||
print_tl_address (gdb_stdout, kthread->pc);
|
||
}
|
||
else
|
||
{
|
||
/* These cprocs don't have a kernel thread.
|
||
* find out the calling frame with
|
||
* FETCH_CPROC_STATE.
|
||
*/
|
||
|
||
struct gdb_thread state;
|
||
|
||
#if 0
|
||
/* jtv -> emcmanus: why do you want this here? */
|
||
if (scan->incarnation == NULL)
|
||
continue; /* EMcM */
|
||
#endif
|
||
|
||
printf_filtered (TL_FORMAT,
|
||
"-",
|
||
-neworder, /* Pseudo MID */
|
||
selected,
|
||
get_thread_name (scan, -neworder),
|
||
"",
|
||
"-", /* kernel state */
|
||
"",
|
||
translate_cstate (cproc_state),
|
||
"");
|
||
state.cproc = scan;
|
||
|
||
if (FETCH_CPROC_STATE (&state) == -1)
|
||
puts_filtered ("???");
|
||
else
|
||
print_tl_address (gdb_stdout, state.pc);
|
||
|
||
neworder++;
|
||
}
|
||
puts_filtered ("\n");
|
||
}
|
||
|
||
/* Scan for kernel threads without cprocs */
|
||
for (index = 0; index < thread_count; index++)
|
||
{
|
||
if (! their_threads[index].cproc)
|
||
{
|
||
int mid;
|
||
|
||
char buf[10];
|
||
char slot[3];
|
||
|
||
mach_port_t name = their_threads[index].name;
|
||
|
||
mid = map_port_name_to_mid (name, MACH_TYPE_THREAD);
|
||
|
||
infoCnt = THREAD_BASIC_INFO_COUNT;
|
||
|
||
ret = thread_info(name,
|
||
THREAD_BASIC_INFO,
|
||
(thread_info_t)&ths,
|
||
&infoCnt);
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Unable to get basic info on thread %d : %s",
|
||
mid,
|
||
mach_error_string (ret));
|
||
continue;
|
||
}
|
||
|
||
sprintf (slot, "%d", index%100);
|
||
|
||
if (name == current_thread)
|
||
selected = '*';
|
||
else
|
||
selected = ' ';
|
||
|
||
if (ths.suspend_count)
|
||
sprintf (buf, "%d", ths.suspend_count);
|
||
else
|
||
buf[0] = '\000';
|
||
|
||
#if 0
|
||
if (ths.flags & TH_FLAGS_SWAPPED)
|
||
strcat (buf, "S");
|
||
#endif
|
||
|
||
if (ths.flags & TH_FLAGS_IDLE)
|
||
strcat (buf, "I");
|
||
|
||
printf_filtered (TL_FORMAT,
|
||
slot,
|
||
mid,
|
||
selected,
|
||
get_thread_name (NULL, index),
|
||
their_threads[index].in_emulator ? "E" : "",
|
||
translate_state (ths.run_state),
|
||
buf,
|
||
"", /* No cproc state */
|
||
""); /* Can't be wired */
|
||
print_tl_address (gdb_stdout, their_threads[index].pc);
|
||
puts_filtered ("\n");
|
||
}
|
||
}
|
||
|
||
obstack_free (cproc_obstack, 0);
|
||
obstack_init (cproc_obstack);
|
||
}
|
||
|
||
void
|
||
thread_select_command(args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int mid;
|
||
thread_array_t thread_list;
|
||
int thread_count;
|
||
kern_return_t ret;
|
||
int is_slot = 0;
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
if (!args)
|
||
error_no_arg ("MID or @SLOTNUMBER to specify a thread to select");
|
||
|
||
while (*args == ' ' || *args == '\t')
|
||
args++;
|
||
|
||
if (*args == '@')
|
||
{
|
||
is_slot++;
|
||
args++;
|
||
}
|
||
|
||
mid = atoi(args);
|
||
|
||
if (mid == 0)
|
||
if (!is_slot || *args != '0') /* Rudimentary checks */
|
||
error ("You must select threads by MID or @SLOTNUMBER");
|
||
|
||
if (select_thread (inferior_task, mid, is_slot?2:1) != KERN_SUCCESS)
|
||
return;
|
||
|
||
if (from_tty)
|
||
printf_filtered ("Thread %d selected\n",
|
||
is_slot ? map_port_name_to_mid (current_thread,
|
||
MACH_TYPE_THREAD) : mid);
|
||
}
|
||
|
||
thread_trace (thread, set)
|
||
mach_port_t thread;
|
||
boolean_t set;
|
||
{
|
||
int flavor = TRACE_FLAVOR;
|
||
unsigned int stateCnt = TRACE_FLAVOR_SIZE;
|
||
kern_return_t ret;
|
||
thread_state_data_t state;
|
||
|
||
if (! MACH_PORT_VALID (thread))
|
||
{
|
||
warning ("thread_trace: invalid thread");
|
||
return;
|
||
}
|
||
|
||
if (must_suspend_thread)
|
||
setup_thread (thread, 1);
|
||
|
||
ret = thread_get_state(thread, flavor, state, &stateCnt);
|
||
CHK ("thread_trace: error reading thread state", ret);
|
||
|
||
if (set)
|
||
{
|
||
TRACE_SET (thread, state);
|
||
}
|
||
else
|
||
{
|
||
if (! TRACE_CLEAR (thread, state))
|
||
{
|
||
if (must_suspend_thread)
|
||
setup_thread (thread, 0);
|
||
return;
|
||
}
|
||
}
|
||
|
||
ret = thread_set_state(thread, flavor, state, stateCnt);
|
||
CHK ("thread_trace: error writing thread state", ret);
|
||
if (must_suspend_thread)
|
||
setup_thread (thread, 0);
|
||
}
|
||
|
||
#ifdef FLUSH_INFERIOR_CACHE
|
||
|
||
/* When over-writing code on some machines the I-Cache must be flushed
|
||
explicitly, because it is not kept coherent by the lazy hardware.
|
||
This definitely includes breakpoints, for instance, or else we
|
||
end up looping in mysterious Bpt traps */
|
||
|
||
flush_inferior_icache(pc, amount)
|
||
CORE_ADDR pc;
|
||
{
|
||
vm_machine_attribute_val_t flush = MATTR_VAL_ICACHE_FLUSH;
|
||
kern_return_t ret;
|
||
|
||
ret = vm_machine_attribute (inferior_task,
|
||
pc,
|
||
amount,
|
||
MATTR_CACHE,
|
||
&flush);
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("Error flushing inferior's cache : %s",
|
||
mach_error_string (ret));
|
||
}
|
||
#endif FLUSH_INFERIOR_CACHE
|
||
|
||
|
||
static
|
||
suspend_all_threads (from_tty)
|
||
int from_tty;
|
||
{
|
||
kern_return_t ret;
|
||
thread_array_t thread_list;
|
||
int thread_count, index;
|
||
int infoCnt;
|
||
thread_basic_info_data_t th_info;
|
||
|
||
|
||
ret = task_threads (inferior_task, &thread_list, &thread_count);
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("Could not suspend inferior threads.");
|
||
m3_kill_inferior ();
|
||
return_to_top_level (RETURN_ERROR);
|
||
}
|
||
|
||
for (index = 0; index < thread_count; index++)
|
||
{
|
||
int mid;
|
||
|
||
mid = map_port_name_to_mid (thread_list[ index ],
|
||
MACH_TYPE_THREAD);
|
||
|
||
ret = thread_suspend(thread_list[ index ]);
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("Error trying to suspend thread %d : %s",
|
||
mid, mach_error_string (ret));
|
||
|
||
if (from_tty)
|
||
{
|
||
infoCnt = THREAD_BASIC_INFO_COUNT;
|
||
ret = thread_info (thread_list[ index ],
|
||
THREAD_BASIC_INFO,
|
||
(thread_info_t) &th_info,
|
||
&infoCnt);
|
||
CHK ("suspend can't get thread info", ret);
|
||
|
||
warning ("Thread %d suspend count is %d",
|
||
mid, th_info.suspend_count);
|
||
}
|
||
}
|
||
|
||
consume_send_rights (thread_list, thread_count);
|
||
ret = vm_deallocate(mach_task_self(),
|
||
(vm_address_t)thread_list,
|
||
(thread_count * sizeof(int)));
|
||
CHK ("Error trying to deallocate thread list", ret);
|
||
}
|
||
|
||
void
|
||
thread_suspend_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
kern_return_t ret;
|
||
int mid;
|
||
mach_port_t saved_thread;
|
||
int infoCnt;
|
||
thread_basic_info_data_t th_info;
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
if (!strcasecmp (args, "all")) {
|
||
suspend_all_threads (from_tty);
|
||
return;
|
||
}
|
||
|
||
saved_thread = current_thread;
|
||
|
||
mid = parse_thread_id (args, 0, 0);
|
||
|
||
if (mid < 0)
|
||
error ("You can suspend only existing kernel threads with MID or @SLOTNUMBER");
|
||
|
||
if (mid == 0)
|
||
mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD);
|
||
else
|
||
if (select_thread (inferior_task, mid, 0) != KERN_SUCCESS)
|
||
{
|
||
if (current_thread)
|
||
current_thread = saved_thread;
|
||
error ("Could not select thread %d", mid);
|
||
}
|
||
|
||
ret = thread_suspend (current_thread);
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("thread_suspend failed : %s",
|
||
mach_error_string (ret));
|
||
|
||
infoCnt = THREAD_BASIC_INFO_COUNT;
|
||
ret = thread_info (current_thread,
|
||
THREAD_BASIC_INFO,
|
||
(thread_info_t) &th_info,
|
||
&infoCnt);
|
||
CHK ("suspend can't get thread info", ret);
|
||
|
||
warning ("Thread %d suspend count is %d", mid, th_info.suspend_count);
|
||
|
||
current_thread = saved_thread;
|
||
}
|
||
|
||
resume_all_threads (from_tty)
|
||
int from_tty;
|
||
{
|
||
kern_return_t ret;
|
||
thread_array_t thread_list;
|
||
int thread_count, index;
|
||
int mid;
|
||
int infoCnt;
|
||
thread_basic_info_data_t th_info;
|
||
|
||
ret = task_threads (inferior_task, &thread_list, &thread_count);
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
m3_kill_inferior ();
|
||
error("task_threads", mach_error_string( ret));
|
||
}
|
||
|
||
for (index = 0; index < thread_count; index++)
|
||
{
|
||
infoCnt = THREAD_BASIC_INFO_COUNT;
|
||
ret = thread_info (thread_list [ index ],
|
||
THREAD_BASIC_INFO,
|
||
(thread_info_t) &th_info,
|
||
&infoCnt);
|
||
CHK ("resume_all can't get thread info", ret);
|
||
|
||
mid = map_port_name_to_mid (thread_list[ index ],
|
||
MACH_TYPE_THREAD);
|
||
|
||
if (! th_info.suspend_count)
|
||
{
|
||
if (mid != -1 && from_tty)
|
||
warning ("Thread %d is not suspended", mid);
|
||
continue;
|
||
}
|
||
|
||
ret = thread_resume (thread_list[ index ]);
|
||
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("Error trying to resume thread %d : %s",
|
||
mid, mach_error_string (ret));
|
||
else if (mid != -1 && from_tty)
|
||
warning ("Thread %d suspend count is %d",
|
||
mid, --th_info.suspend_count);
|
||
}
|
||
|
||
consume_send_rights (thread_list, thread_count);
|
||
ret = vm_deallocate(mach_task_self(),
|
||
(vm_address_t)thread_list,
|
||
(thread_count * sizeof(int)));
|
||
CHK("Error trying to deallocate thread list", ret);
|
||
}
|
||
|
||
void
|
||
thread_resume_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int mid;
|
||
mach_port_t saved_thread;
|
||
kern_return_t ret;
|
||
thread_basic_info_data_t th_info;
|
||
int infoCnt = THREAD_BASIC_INFO_COUNT;
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
if (!strcasecmp (args, "all")) {
|
||
resume_all_threads (from_tty);
|
||
return;
|
||
}
|
||
|
||
saved_thread = current_thread;
|
||
|
||
mid = parse_thread_id (args, 0, 0);
|
||
|
||
if (mid < 0)
|
||
error ("You can resume only existing kernel threads with MID or @SLOTNUMBER");
|
||
|
||
if (mid == 0)
|
||
mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD);
|
||
else
|
||
if (select_thread (inferior_task, mid, 0) != KERN_SUCCESS)
|
||
{
|
||
if (current_thread)
|
||
current_thread = saved_thread;
|
||
return_to_top_level (RETURN_ERROR);
|
||
}
|
||
|
||
ret = thread_info (current_thread,
|
||
THREAD_BASIC_INFO,
|
||
(thread_info_t) &th_info,
|
||
&infoCnt);
|
||
CHK ("resume can't get thread info", ret);
|
||
|
||
if (! th_info.suspend_count)
|
||
{
|
||
warning ("Thread %d is not suspended", mid);
|
||
goto out;
|
||
}
|
||
|
||
ret = thread_resume (current_thread);
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("thread_resume failed : %s",
|
||
mach_error_string (ret));
|
||
else
|
||
{
|
||
th_info.suspend_count--;
|
||
warning ("Thread %d suspend count is %d", mid, th_info.suspend_count);
|
||
}
|
||
|
||
out:
|
||
current_thread = saved_thread;
|
||
}
|
||
|
||
void
|
||
thread_kill_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int mid;
|
||
kern_return_t ret;
|
||
int thread_count;
|
||
thread_array_t thread_table;
|
||
int index;
|
||
mach_port_t thread_to_kill = MACH_PORT_NULL;
|
||
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
if (!args)
|
||
error_no_arg ("thread mid to kill from the inferior task");
|
||
|
||
mid = parse_thread_id (args, 0, 0);
|
||
|
||
if (mid < 0)
|
||
error ("You can kill only existing kernel threads with MID or @SLOTNUMBER");
|
||
|
||
if (mid)
|
||
{
|
||
ret = machid_mach_port (mid_server, mid_auth, mid, &thread_to_kill);
|
||
CHK ("thread_kill_command: machid_mach_port map failed", ret);
|
||
}
|
||
else
|
||
mid = map_port_name_to_mid (current_thread, MACH_TYPE_THREAD);
|
||
|
||
/* Don't allow gdb to kill *any* thread in the system. Use mkill program for that */
|
||
ret = task_threads (inferior_task, &thread_table, &thread_count);
|
||
CHK ("Error getting inferior's thread list", ret);
|
||
|
||
if (thread_to_kill == current_thread)
|
||
{
|
||
ret = thread_terminate (thread_to_kill);
|
||
CHK ("Thread could not be terminated", ret);
|
||
|
||
if (select_thread (inferior_task, 0, 1) != KERN_SUCCESS)
|
||
warning ("Last thread was killed, use \"kill\" command to kill task");
|
||
}
|
||
else
|
||
for (index = 0; index < thread_count; index++)
|
||
if (thread_table [ index ] == thread_to_kill)
|
||
{
|
||
ret = thread_terminate (thread_to_kill);
|
||
CHK ("Thread could not be terminated", ret);
|
||
}
|
||
|
||
if (thread_count > 1)
|
||
consume_send_rights (thread_table, thread_count);
|
||
|
||
ret = vm_deallocate (mach_task_self(), (vm_address_t)thread_table,
|
||
(thread_count * sizeof(mach_port_t)));
|
||
CHK ("Error trying to deallocate thread list", ret);
|
||
|
||
warning ("Thread %d killed", mid);
|
||
}
|
||
|
||
|
||
/* Task specific commands; add more if you like */
|
||
|
||
void
|
||
task_resume_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
kern_return_t ret;
|
||
task_basic_info_data_t ta_info;
|
||
int infoCnt = TASK_BASIC_INFO_COUNT;
|
||
int mid = map_port_name_to_mid (inferior_task, MACH_TYPE_TASK);
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
/* Would be trivial to change, but is it desirable? */
|
||
if (args)
|
||
error ("Currently gdb can resume only it's inferior task");
|
||
|
||
ret = task_info (inferior_task,
|
||
TASK_BASIC_INFO,
|
||
(task_info_t) &ta_info,
|
||
&infoCnt);
|
||
CHK ("task_resume_command: task_info failed", ret);
|
||
|
||
if (ta_info.suspend_count == 0)
|
||
error ("Inferior task %d is not suspended", mid);
|
||
else if (ta_info.suspend_count == 1 &&
|
||
from_tty &&
|
||
!query ("Suspend count is now 1. Do you know what you are doing? "))
|
||
error ("Task not resumed");
|
||
|
||
ret = task_resume (inferior_task);
|
||
CHK ("task_resume_command: task_resume", ret);
|
||
|
||
if (ta_info.suspend_count == 1)
|
||
{
|
||
warning ("Inferior task %d is no longer suspended", mid);
|
||
must_suspend_thread = 1;
|
||
/* @@ This is not complete: Registers change all the time when not
|
||
suspended! */
|
||
registers_changed ();
|
||
}
|
||
else
|
||
warning ("Inferior task %d suspend count is now %d",
|
||
mid, ta_info.suspend_count-1);
|
||
}
|
||
|
||
|
||
void
|
||
task_suspend_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
kern_return_t ret;
|
||
task_basic_info_data_t ta_info;
|
||
int infoCnt = TASK_BASIC_INFO_COUNT;
|
||
int mid = map_port_name_to_mid (inferior_task, MACH_TYPE_TASK);
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
/* Would be trivial to change, but is it desirable? */
|
||
if (args)
|
||
error ("Currently gdb can suspend only it's inferior task");
|
||
|
||
ret = task_suspend (inferior_task);
|
||
CHK ("task_suspend_command: task_suspend", ret);
|
||
|
||
must_suspend_thread = 0;
|
||
|
||
ret = task_info (inferior_task,
|
||
TASK_BASIC_INFO,
|
||
(task_info_t) &ta_info,
|
||
&infoCnt);
|
||
CHK ("task_suspend_command: task_info failed", ret);
|
||
|
||
warning ("Inferior task %d suspend count is now %d",
|
||
mid, ta_info.suspend_count);
|
||
}
|
||
|
||
static char *
|
||
get_size (bytes)
|
||
int bytes;
|
||
{
|
||
static char size [ 30 ];
|
||
int zz = bytes/1024;
|
||
|
||
if (zz / 1024)
|
||
sprintf (size, "%-2.1f M", ((float)bytes)/(1024.0*1024.0));
|
||
else
|
||
sprintf (size, "%d K", zz);
|
||
|
||
return size;
|
||
}
|
||
|
||
/* Does this require the target task to be suspended?? I don't think so. */
|
||
void
|
||
task_info_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int mid = -5;
|
||
mach_port_t task;
|
||
kern_return_t ret;
|
||
task_basic_info_data_t ta_info;
|
||
int infoCnt = TASK_BASIC_INFO_COUNT;
|
||
int page_size = round_page(1);
|
||
int thread_count = 0;
|
||
|
||
if (MACH_PORT_VALID (inferior_task))
|
||
mid = map_port_name_to_mid (inferior_task,
|
||
MACH_TYPE_TASK);
|
||
|
||
task = inferior_task;
|
||
|
||
if (args)
|
||
{
|
||
int tmid = atoi (args);
|
||
|
||
if (tmid <= 0)
|
||
error ("Invalid mid %d for task info", tmid);
|
||
|
||
if (tmid != mid)
|
||
{
|
||
mid = tmid;
|
||
ret = machid_mach_port (mid_server, mid_auth, tmid, &task);
|
||
CHK ("task_info_command: machid_mach_port map failed", ret);
|
||
}
|
||
}
|
||
|
||
if (mid < 0)
|
||
error ("You have to give the task MID as an argument");
|
||
|
||
ret = task_info (task,
|
||
TASK_BASIC_INFO,
|
||
(task_info_t) &ta_info,
|
||
&infoCnt);
|
||
CHK ("task_info_command: task_info failed", ret);
|
||
|
||
printf_filtered ("\nTask info for task %d:\n\n", mid);
|
||
printf_filtered (" Suspend count : %d\n", ta_info.suspend_count);
|
||
printf_filtered (" Base priority : %d\n", ta_info.base_priority);
|
||
printf_filtered (" Virtual size : %s\n", get_size (ta_info.virtual_size));
|
||
printf_filtered (" Resident size : %s\n", get_size (ta_info.resident_size));
|
||
|
||
{
|
||
thread_array_t thread_list;
|
||
|
||
ret = task_threads (task, &thread_list, &thread_count);
|
||
CHK ("task_info_command: task_threads", ret);
|
||
|
||
printf_filtered (" Thread count : %d\n", thread_count);
|
||
|
||
consume_send_rights (thread_list, thread_count);
|
||
ret = vm_deallocate(mach_task_self(),
|
||
(vm_address_t)thread_list,
|
||
(thread_count * sizeof(int)));
|
||
CHK("Error trying to deallocate thread list", ret);
|
||
}
|
||
if (have_emulator_p (task))
|
||
printf_filtered (" Emulator at : 0x%x..0x%x\n",
|
||
EMULATOR_BASE, EMULATOR_END);
|
||
else
|
||
printf_filtered (" No emulator.\n");
|
||
|
||
if (thread_count && task == inferior_task)
|
||
printf_filtered ("\nUse the \"thread list\" command to see the threads\n");
|
||
}
|
||
|
||
/* You may either FORWARD the exception to the inferior, or KEEP
|
||
* it and return to GDB command level.
|
||
*
|
||
* exception mid [ forward | keep ]
|
||
*/
|
||
|
||
static void
|
||
exception_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
char *scan = args;
|
||
int exception;
|
||
int len;
|
||
|
||
if (!args)
|
||
error_no_arg ("exception number action");
|
||
|
||
while (*scan == ' ' || *scan == '\t') scan++;
|
||
|
||
if ('0' <= *scan && *scan <= '9')
|
||
while ('0' <= *scan && *scan <= '9')
|
||
scan++;
|
||
else
|
||
error ("exception number action");
|
||
|
||
exception = atoi (args);
|
||
if (exception <= 0 || exception > MAX_EXCEPTION)
|
||
error ("Allowed exception numbers are in range 1..%d",
|
||
MAX_EXCEPTION);
|
||
|
||
if (*scan != ' ' && *scan != '\t')
|
||
error ("exception number must be followed by a space");
|
||
else
|
||
while (*scan == ' ' || *scan == '\t') scan++;
|
||
|
||
args = scan;
|
||
len = 0;
|
||
while (*scan)
|
||
{
|
||
len++;
|
||
scan++;
|
||
}
|
||
|
||
if (!len)
|
||
error("exception number action");
|
||
|
||
if (!strncasecmp (args, "forward", len))
|
||
exception_map[ exception ].forward = TRUE;
|
||
else if (!strncasecmp (args, "keep", len))
|
||
exception_map[ exception ].forward = FALSE;
|
||
else
|
||
error ("exception action is either \"keep\" or \"forward\"");
|
||
}
|
||
|
||
static void
|
||
print_exception_info (exception)
|
||
int exception;
|
||
{
|
||
boolean_t forward = exception_map[ exception ].forward;
|
||
|
||
printf_filtered ("%s\t(%d): ", exception_map[ exception ].name,
|
||
exception);
|
||
if (!forward)
|
||
if (exception_map[ exception ].sigmap != SIG_UNKNOWN)
|
||
printf_filtered ("keep and handle as signal %d\n",
|
||
exception_map[ exception ].sigmap);
|
||
else
|
||
printf_filtered ("keep and handle as unknown signal %d\n",
|
||
exception_map[ exception ].sigmap);
|
||
else
|
||
printf_filtered ("forward exception to inferior\n");
|
||
}
|
||
|
||
void
|
||
exception_info (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int exception;
|
||
|
||
if (!args)
|
||
for (exception = 1; exception <= MAX_EXCEPTION; exception++)
|
||
print_exception_info (exception);
|
||
else
|
||
{
|
||
exception = atoi (args);
|
||
|
||
if (exception <= 0 || exception > MAX_EXCEPTION)
|
||
error ("Invalid exception number, values from 1 to %d allowed",
|
||
MAX_EXCEPTION);
|
||
print_exception_info (exception);
|
||
}
|
||
}
|
||
|
||
/* Check for actions for mach exceptions.
|
||
*/
|
||
mach3_exception_actions (w, force_print_only, who)
|
||
WAITTYPE *w;
|
||
boolean_t force_print_only;
|
||
char *who;
|
||
{
|
||
boolean_t force_print = FALSE;
|
||
|
||
|
||
if (force_print_only ||
|
||
exception_map[stop_exception].sigmap == SIG_UNKNOWN)
|
||
force_print = TRUE;
|
||
else
|
||
WSETSTOP (*w, exception_map[stop_exception].sigmap);
|
||
|
||
if (exception_map[stop_exception].print || force_print)
|
||
{
|
||
target_terminal_ours ();
|
||
|
||
printf_filtered ("\n%s received %s exception : ",
|
||
who,
|
||
exception_map[stop_exception].name);
|
||
|
||
wrap_here (" ");
|
||
|
||
switch(stop_exception) {
|
||
case EXC_BAD_ACCESS:
|
||
printf_filtered ("referencing address 0x%x : %s\n",
|
||
stop_subcode,
|
||
mach_error_string (stop_code));
|
||
break;
|
||
case EXC_BAD_INSTRUCTION:
|
||
printf_filtered
|
||
("illegal or undefined instruction. code %d subcode %d\n",
|
||
stop_code, stop_subcode);
|
||
break;
|
||
case EXC_ARITHMETIC:
|
||
printf_filtered ("code %d\n", stop_code);
|
||
break;
|
||
case EXC_EMULATION:
|
||
printf_filtered ("code %d subcode %d\n", stop_code, stop_subcode);
|
||
break;
|
||
case EXC_SOFTWARE:
|
||
printf_filtered ("%s specific, code 0x%x\n",
|
||
stop_code < 0xffff ? "hardware" : "os emulation",
|
||
stop_code);
|
||
break;
|
||
case EXC_BREAKPOINT:
|
||
printf_filtered ("type %d (machine dependent)\n",
|
||
stop_code);
|
||
break;
|
||
default:
|
||
fatal ("Unknown exception");
|
||
}
|
||
}
|
||
}
|
||
|
||
setup_notify_port (create_new)
|
||
int create_new;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
if (MACH_PORT_VALID (our_notify_port))
|
||
{
|
||
ret = mach_port_destroy (mach_task_self (), our_notify_port);
|
||
CHK ("Could not destroy our_notify_port", ret);
|
||
}
|
||
|
||
our_notify_port = MACH_PORT_NULL;
|
||
notify_chain = (port_chain_t) NULL;
|
||
port_chain_destroy (port_chain_obstack);
|
||
|
||
if (create_new)
|
||
{
|
||
ret = mach_port_allocate (mach_task_self(),
|
||
MACH_PORT_RIGHT_RECEIVE,
|
||
&our_notify_port);
|
||
if (ret != KERN_SUCCESS)
|
||
fatal("Creating notify port %s", mach_error_string(ret));
|
||
|
||
ret = mach_port_move_member(mach_task_self(),
|
||
our_notify_port,
|
||
inferior_wait_port_set);
|
||
if (ret != KERN_SUCCESS)
|
||
fatal("initial move member %s",mach_error_string(ret));
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Register our message port to the net name server
|
||
*
|
||
* Currently used only by the external stop-gdb program
|
||
* since ^C does not work if you would like to enter
|
||
* gdb command level while debugging your program.
|
||
*
|
||
* NOTE: If the message port is sometimes used for other
|
||
* purposes also, the NAME must not be a guessable one.
|
||
* Then, there should be a way to change it.
|
||
*/
|
||
|
||
char registered_name[ MAX_NAME_LEN ];
|
||
|
||
void
|
||
message_port_info (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
if (registered_name[0])
|
||
printf_filtered ("gdb's message port name: '%s'\n",
|
||
registered_name);
|
||
else
|
||
printf_filtered ("gdb's message port is not currently registered\n");
|
||
}
|
||
|
||
void
|
||
gdb_register_port (name, port)
|
||
char *name;
|
||
mach_port_t port;
|
||
{
|
||
kern_return_t ret;
|
||
static int already_signed = 0;
|
||
int len;
|
||
|
||
if (! MACH_PORT_VALID (port) || !name || !*name)
|
||
{
|
||
warning ("Invalid registration request");
|
||
return;
|
||
}
|
||
|
||
if (! already_signed)
|
||
{
|
||
ret = mach_port_insert_right (mach_task_self (),
|
||
our_message_port,
|
||
our_message_port,
|
||
MACH_MSG_TYPE_MAKE_SEND);
|
||
CHK ("Failed to create a signature to our_message_port", ret);
|
||
already_signed = 1;
|
||
}
|
||
else if (already_signed > 1)
|
||
{
|
||
ret = netname_check_out (name_server_port,
|
||
registered_name,
|
||
our_message_port);
|
||
CHK ("Failed to check out gdb's message port", ret);
|
||
registered_name[0] = '\000';
|
||
already_signed = 1;
|
||
}
|
||
|
||
ret = netname_check_in (name_server_port, /* Name server port */
|
||
name, /* Name of service */
|
||
our_message_port, /* Signature */
|
||
port); /* Creates a new send right */
|
||
CHK("Failed to check in the port", ret);
|
||
|
||
len = 0;
|
||
while(len < MAX_NAME_LEN && *(name+len))
|
||
{
|
||
registered_name[len] = *(name+len);
|
||
len++;
|
||
}
|
||
registered_name[len] = '\000';
|
||
already_signed = 2;
|
||
}
|
||
|
||
struct cmd_list_element *cmd_thread_list;
|
||
struct cmd_list_element *cmd_task_list;
|
||
|
||
/*ARGSUSED*/
|
||
static void
|
||
thread_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
printf_unfiltered ("\"thread\" must be followed by the name of a thread command.\n");
|
||
help_list (cmd_thread_list, "thread ", -1, gdb_stdout);
|
||
}
|
||
|
||
/*ARGSUSED*/
|
||
static void
|
||
task_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
printf_unfiltered ("\"task\" must be followed by the name of a task command.\n");
|
||
help_list (cmd_task_list, "task ", -1, gdb_stdout);
|
||
}
|
||
|
||
add_mach_specific_commands ()
|
||
{
|
||
/* Thread handling commands */
|
||
|
||
/* FIXME: Move our thread support into the generic thread.c stuff so we
|
||
can share that code. */
|
||
add_prefix_cmd ("mthread", class_stack, thread_command,
|
||
"Generic command for handling Mach threads in the debugged task.",
|
||
&cmd_thread_list, "thread ", 0, &cmdlist);
|
||
|
||
add_com_alias ("th", "mthread", class_stack, 1);
|
||
|
||
add_cmd ("select", class_stack, thread_select_command,
|
||
"Select and print MID of the selected thread",
|
||
&cmd_thread_list);
|
||
add_cmd ("list", class_stack, thread_list_command,
|
||
"List info of task's threads. Selected thread is marked with '*'",
|
||
&cmd_thread_list);
|
||
add_cmd ("suspend", class_run, thread_suspend_command,
|
||
"Suspend one or all of the threads in the selected task.",
|
||
&cmd_thread_list);
|
||
add_cmd ("resume", class_run, thread_resume_command,
|
||
"Resume one or all of the threads in the selected task.",
|
||
&cmd_thread_list);
|
||
add_cmd ("kill", class_run, thread_kill_command,
|
||
"Kill the specified thread MID from inferior task.",
|
||
&cmd_thread_list);
|
||
#if 0
|
||
/* The rest of this support (condition_thread) was not merged. It probably
|
||
should not be merged in this form, but instead added to the generic GDB
|
||
thread support. */
|
||
add_cmd ("break", class_breakpoint, condition_thread,
|
||
"Breakpoint N will only be effective for thread MID or @SLOT\n\
|
||
If MID/@SLOT is omitted allow all threads to break at breakpoint",
|
||
&cmd_thread_list);
|
||
#endif
|
||
/* Thread command shorthands (for backward compatibility) */
|
||
add_alias_cmd ("ts", "mthread select", 0, 0, &cmdlist);
|
||
add_alias_cmd ("tl", "mthread list", 0, 0, &cmdlist);
|
||
|
||
/* task handling commands */
|
||
|
||
add_prefix_cmd ("task", class_stack, task_command,
|
||
"Generic command for handling debugged task.",
|
||
&cmd_task_list, "task ", 0, &cmdlist);
|
||
|
||
add_com_alias ("ta", "task", class_stack, 1);
|
||
|
||
add_cmd ("suspend", class_run, task_suspend_command,
|
||
"Suspend the inferior task.",
|
||
&cmd_task_list);
|
||
add_cmd ("resume", class_run, task_resume_command,
|
||
"Resume the inferior task.",
|
||
&cmd_task_list);
|
||
add_cmd ("info", no_class, task_info_command,
|
||
"Print information about the specified task.",
|
||
&cmd_task_list);
|
||
|
||
/* Print my message port name */
|
||
|
||
add_info ("message-port", message_port_info,
|
||
"Returns the name of gdb's message port in the netnameserver");
|
||
|
||
/* Exception commands */
|
||
|
||
add_info ("exceptions", exception_info,
|
||
"What debugger does when program gets various exceptions.\n\
|
||
Specify an exception number as argument to print info on that\n\
|
||
exception only.");
|
||
|
||
add_com ("exception", class_run, exception_command,
|
||
"Specify how to handle an exception.\n\
|
||
Args are exception number followed by \"forward\" or \"keep\".\n\
|
||
`Forward' means forward the exception to the program's normal exception\n\
|
||
handler.\n\
|
||
`Keep' means reenter debugger if this exception happens, and GDB maps\n\
|
||
the exception to some signal (see info exception)\n\
|
||
Normally \"keep\" is used to return to GDB on exception.");
|
||
}
|
||
|
||
kern_return_t
|
||
do_mach_notify_dead_name (notify, name)
|
||
mach_port_t notify;
|
||
mach_port_t name;
|
||
{
|
||
kern_return_t kr = KERN_SUCCESS;
|
||
|
||
/* Find the thing that notified */
|
||
port_chain_t element = port_chain_member (notify_chain, name);
|
||
|
||
/* Take name of from unreceived dead name notification list */
|
||
notify_chain = port_chain_delete (notify_chain, name);
|
||
|
||
if (! element)
|
||
error ("Received a dead name notify from unchained port (0x%x)", name);
|
||
|
||
switch (element->type) {
|
||
|
||
case MACH_TYPE_THREAD:
|
||
target_terminal_ours_for_output ();
|
||
if (name == current_thread)
|
||
{
|
||
printf_filtered ("\nCurrent thread %d died", element->mid);
|
||
current_thread = MACH_PORT_NULL;
|
||
}
|
||
else
|
||
printf_filtered ("\nThread %d died", element->mid);
|
||
|
||
break;
|
||
|
||
case MACH_TYPE_TASK:
|
||
target_terminal_ours_for_output ();
|
||
if (name != inferior_task)
|
||
printf_filtered ("Task %d died, but it was not the selected task",
|
||
element->mid);
|
||
else
|
||
{
|
||
printf_filtered ("Current task %d died", element->mid);
|
||
|
||
mach_port_destroy (mach_task_self(), name);
|
||
inferior_task = MACH_PORT_NULL;
|
||
|
||
if (notify_chain)
|
||
warning ("There were still unreceived dead_name_notifications???");
|
||
|
||
/* Destroy the old notifications */
|
||
setup_notify_port (0);
|
||
|
||
}
|
||
break;
|
||
|
||
default:
|
||
error ("Unregistered dead_name 0x%x notification received. Type is %d, mid is 0x%x",
|
||
name, element->type, element->mid);
|
||
break;
|
||
}
|
||
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
kern_return_t
|
||
do_mach_notify_msg_accepted (notify, name)
|
||
mach_port_t notify;
|
||
mach_port_t name;
|
||
{
|
||
warning ("do_mach_notify_msg_accepted : notify %x, name %x",
|
||
notify, name);
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
kern_return_t
|
||
do_mach_notify_no_senders (notify, mscount)
|
||
mach_port_t notify;
|
||
mach_port_mscount_t mscount;
|
||
{
|
||
warning ("do_mach_notify_no_senders : notify %x, mscount %x",
|
||
notify, mscount);
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
kern_return_t
|
||
do_mach_notify_port_deleted (notify, name)
|
||
mach_port_t notify;
|
||
mach_port_t name;
|
||
{
|
||
warning ("do_mach_notify_port_deleted : notify %x, name %x",
|
||
notify, name);
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
kern_return_t
|
||
do_mach_notify_port_destroyed (notify, rights)
|
||
mach_port_t notify;
|
||
mach_port_t rights;
|
||
{
|
||
warning ("do_mach_notify_port_destroyed : notify %x, rights %x",
|
||
notify, rights);
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
kern_return_t
|
||
do_mach_notify_send_once (notify)
|
||
mach_port_t notify;
|
||
{
|
||
#ifdef DUMP_SYSCALL
|
||
/* MANY of these are generated. */
|
||
warning ("do_mach_notify_send_once : notify %x",
|
||
notify);
|
||
#endif
|
||
return KERN_SUCCESS;
|
||
}
|
||
|
||
/* Kills the inferior. It's gone when you call this */
|
||
static void
|
||
kill_inferior_fast ()
|
||
{
|
||
WAITTYPE w;
|
||
|
||
if (inferior_pid == 0 || inferior_pid == 1)
|
||
return;
|
||
|
||
/* kill() it, since the Unix server does not otherwise notice when
|
||
* killed with task_terminate().
|
||
*/
|
||
if (inferior_pid > 0)
|
||
kill (inferior_pid, SIGKILL);
|
||
|
||
/* It's propably terminate already */
|
||
(void) task_terminate (inferior_task);
|
||
|
||
inferior_task = MACH_PORT_NULL;
|
||
current_thread = MACH_PORT_NULL;
|
||
|
||
wait3 (&w, WNOHANG, 0);
|
||
|
||
setup_notify_port (0);
|
||
}
|
||
|
||
static void
|
||
m3_kill_inferior ()
|
||
{
|
||
kill_inferior_fast ();
|
||
target_mourn_inferior ();
|
||
}
|
||
|
||
/* Clean up after the inferior dies. */
|
||
|
||
static void
|
||
m3_mourn_inferior ()
|
||
{
|
||
unpush_target (&m3_ops);
|
||
generic_mourn_inferior ();
|
||
}
|
||
|
||
|
||
/* Fork an inferior process, and start debugging it. */
|
||
|
||
static void
|
||
m3_create_inferior (exec_file, allargs, env)
|
||
char *exec_file;
|
||
char *allargs;
|
||
char **env;
|
||
{
|
||
fork_inferior (exec_file, allargs, env, m3_trace_me, m3_trace_him, NULL);
|
||
/* We are at the first instruction we care about. */
|
||
/* Pedal to the metal... */
|
||
proceed ((CORE_ADDR) -1, 0, 0);
|
||
}
|
||
|
||
/* Mark our target-struct as eligible for stray "run" and "attach"
|
||
commands. */
|
||
static int
|
||
m3_can_run ()
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
/* Mach 3.0 does not need ptrace for anything
|
||
* Make sure nobody uses it on mach.
|
||
*/
|
||
ptrace (a,b,c,d)
|
||
int a,b,c,d;
|
||
{
|
||
error ("Lose, Lose! Somebody called ptrace\n");
|
||
}
|
||
|
||
/* Resume execution of the inferior process.
|
||
If STEP is nonzero, single-step it.
|
||
If SIGNAL is nonzero, give it that signal. */
|
||
|
||
void
|
||
m3_resume (pid, step, signal)
|
||
int pid;
|
||
int step;
|
||
enum target_signal signal;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
if (step)
|
||
{
|
||
thread_basic_info_data_t th_info;
|
||
unsigned int infoCnt = THREAD_BASIC_INFO_COUNT;
|
||
|
||
/* There is no point in single stepping when current_thread
|
||
* is dead.
|
||
*/
|
||
if (! MACH_PORT_VALID (current_thread))
|
||
error ("No thread selected; can not single step");
|
||
|
||
/* If current_thread is suspended, tracing it would never return.
|
||
*/
|
||
ret = thread_info (current_thread,
|
||
THREAD_BASIC_INFO,
|
||
(thread_info_t) &th_info,
|
||
&infoCnt);
|
||
CHK ("child_resume: can't get thread info", ret);
|
||
|
||
if (th_info.suspend_count)
|
||
error ("Can't trace a suspended thread. Use \"thread resume\" command to resume it");
|
||
}
|
||
|
||
vm_read_cache_valid = FALSE;
|
||
|
||
if (signal && inferior_pid > 0) /* Do not signal, if attached by MID */
|
||
kill (inferior_pid, target_signal_to_host (signal));
|
||
|
||
if (step)
|
||
{
|
||
suspend_all_threads (0);
|
||
|
||
setup_single_step (current_thread, TRUE);
|
||
|
||
ret = thread_resume (current_thread);
|
||
CHK ("thread_resume", ret);
|
||
}
|
||
|
||
ret = task_resume (inferior_task);
|
||
if (ret == KERN_FAILURE)
|
||
warning ("Task was not suspended");
|
||
else
|
||
CHK ("Resuming task", ret);
|
||
|
||
/* HACK HACK This is needed by the multiserver system HACK HACK */
|
||
while ((ret = task_resume(inferior_task)) == KERN_SUCCESS)
|
||
/* make sure it really runs */;
|
||
/* HACK HACK This is needed by the multiserver system HACK HACK */
|
||
}
|
||
|
||
#ifdef ATTACH_DETACH
|
||
|
||
/* Start debugging the process with the given task */
|
||
void
|
||
task_attach (tid)
|
||
task_t tid;
|
||
{
|
||
kern_return_t ret;
|
||
inferior_task = tid;
|
||
|
||
ret = task_suspend (inferior_task);
|
||
CHK("task_attach: task_suspend", ret);
|
||
|
||
must_suspend_thread = 0;
|
||
|
||
setup_notify_port (1);
|
||
|
||
request_notify (inferior_task, MACH_NOTIFY_DEAD_NAME, MACH_TYPE_TASK);
|
||
|
||
setup_exception_port ();
|
||
|
||
emulator_present = have_emulator_p (inferior_task);
|
||
|
||
attach_flag = 1;
|
||
}
|
||
|
||
/* Well, we can call error also here and leave the
|
||
* target stack inconsistent. Sigh.
|
||
* Fix this sometime (the only way to fail here is that
|
||
* the task has no threads at all, which is rare, but
|
||
* possible; or if the target task has died, which is also
|
||
* possible, but unlikely, since it has been suspended.
|
||
* (Someone must have killed it))
|
||
*/
|
||
void
|
||
attach_to_thread ()
|
||
{
|
||
if (select_thread (inferior_task, 0, 1) != KERN_SUCCESS)
|
||
error ("Could not select any threads to attach to");
|
||
}
|
||
|
||
mid_attach (mid)
|
||
int mid;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
ret = machid_mach_port (mid_server, mid_auth, mid, &inferior_task);
|
||
CHK("mid_attach: machid_mach_port", ret);
|
||
|
||
task_attach (inferior_task);
|
||
|
||
return mid;
|
||
}
|
||
|
||
/*
|
||
* Start debugging the process whose unix process-id is PID.
|
||
* A negative "pid" value is legal and signifies a mach_id not a unix pid.
|
||
*
|
||
* Prevent (possible unwanted) dangerous operations by enabled users
|
||
* like "atta 0" or "atta foo" (equal to the previous :-) and
|
||
* "atta pidself". Anyway, the latter is allowed by specifying a MID.
|
||
*/
|
||
static int
|
||
m3_do_attach (pid)
|
||
int pid;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
if (pid == 0)
|
||
error("MID=0, Debugging the master unix server does not compute");
|
||
|
||
/* Foo. This assumes gdb has a unix pid */
|
||
if (pid == getpid())
|
||
error ("I will debug myself only by mid. (Gdb would suspend itself!)");
|
||
|
||
if (pid < 0)
|
||
{
|
||
mid_attach (-(pid));
|
||
|
||
/* inferior_pid will be NEGATIVE! */
|
||
inferior_pid = pid;
|
||
|
||
return inferior_pid;
|
||
}
|
||
|
||
inferior_task = task_by_pid (pid);
|
||
if (! MACH_PORT_VALID (inferior_task))
|
||
error("Cannot map Unix pid %d to Mach task port", pid);
|
||
|
||
task_attach (inferior_task);
|
||
|
||
inferior_pid = pid;
|
||
|
||
return inferior_pid;
|
||
}
|
||
|
||
/* Attach to process PID, then initialize for debugging it
|
||
and wait for the trace-trap that results from attaching. */
|
||
|
||
static void
|
||
m3_attach (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
char *exec_file;
|
||
int pid;
|
||
|
||
if (!args)
|
||
error_no_arg ("process-id to attach");
|
||
|
||
pid = atoi (args);
|
||
|
||
if (pid == getpid()) /* Trying to masturbate? */
|
||
error ("I refuse to debug myself!");
|
||
|
||
if (from_tty)
|
||
{
|
||
exec_file = (char *) get_exec_file (0);
|
||
|
||
if (exec_file)
|
||
printf_unfiltered ("Attaching to program `%s', %s\n", exec_file, target_pid_to_str (pid));
|
||
else
|
||
printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
|
||
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
m3_do_attach (pid);
|
||
inferior_pid = pid;
|
||
push_target (&m3_ops);
|
||
}
|
||
|
||
void
|
||
deallocate_inferior_ports ()
|
||
{
|
||
kern_return_t ret;
|
||
thread_array_t thread_list;
|
||
int thread_count, index;
|
||
|
||
if (!MACH_PORT_VALID (inferior_task))
|
||
return;
|
||
|
||
ret = task_threads (inferior_task, &thread_list, &thread_count);
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
warning ("deallocate_inferior_ports: task_threads",
|
||
mach_error_string(ret));
|
||
return;
|
||
}
|
||
|
||
/* Get rid of send rights to task threads */
|
||
for (index = 0; index < thread_count; index++)
|
||
{
|
||
int rights;
|
||
ret = mach_port_get_refs (mach_task_self (),
|
||
thread_list[index],
|
||
MACH_PORT_RIGHT_SEND,
|
||
&rights);
|
||
CHK("deallocate_inferior_ports: get refs", ret);
|
||
|
||
if (rights > 0)
|
||
{
|
||
ret = mach_port_mod_refs (mach_task_self (),
|
||
thread_list[index],
|
||
MACH_PORT_RIGHT_SEND,
|
||
-rights);
|
||
CHK("deallocate_inferior_ports: mod refs", ret);
|
||
}
|
||
}
|
||
|
||
ret = mach_port_mod_refs (mach_task_self (),
|
||
inferior_exception_port,
|
||
MACH_PORT_RIGHT_RECEIVE,
|
||
-1);
|
||
CHK ("deallocate_inferior_ports: cannot get rid of exception port", ret);
|
||
|
||
ret = mach_port_deallocate (mach_task_self (),
|
||
inferior_task);
|
||
CHK ("deallocate_task_port: deallocating inferior_task", ret);
|
||
|
||
current_thread = MACH_PORT_NULL;
|
||
inferior_task = MACH_PORT_NULL;
|
||
}
|
||
|
||
/* Stop debugging the process whose number is PID
|
||
and continue it with signal number SIGNAL.
|
||
SIGNAL = 0 means just continue it. */
|
||
|
||
static void
|
||
m3_do_detach (signal)
|
||
int signal;
|
||
{
|
||
kern_return_t ret;
|
||
|
||
MACH_ERROR_NO_INFERIOR;
|
||
|
||
if (current_thread != MACH_PORT_NULL)
|
||
{
|
||
/* Store the gdb's view of the thread we are deselecting
|
||
* before we detach.
|
||
* @@ I am really not sure if this is ever needeed.
|
||
*/
|
||
target_prepare_to_store ();
|
||
target_store_registers (-1);
|
||
}
|
||
|
||
ret = task_set_special_port (inferior_task,
|
||
TASK_EXCEPTION_PORT,
|
||
inferior_old_exception_port);
|
||
CHK ("task_set_special_port", ret);
|
||
|
||
/* Discard all requested notifications */
|
||
setup_notify_port (0);
|
||
|
||
if (remove_breakpoints ())
|
||
warning ("Could not remove breakpoints when detaching");
|
||
|
||
if (signal && inferior_pid > 0)
|
||
kill (inferior_pid, signal);
|
||
|
||
/* the task might be dead by now */
|
||
(void) task_resume (inferior_task);
|
||
|
||
deallocate_inferior_ports ();
|
||
|
||
attach_flag = 0;
|
||
}
|
||
|
||
/* Take a program previously attached to and detaches it.
|
||
The program resumes execution and will no longer stop
|
||
on signals, etc. We'd better not have left any breakpoints
|
||
in the program or it'll die when it hits one. For this
|
||
to work, it may be necessary for the process to have been
|
||
previously attached. It *might* work if the program was
|
||
started via fork. */
|
||
|
||
static void
|
||
m3_detach (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int siggnal = 0;
|
||
|
||
if (from_tty)
|
||
{
|
||
char *exec_file = get_exec_file (0);
|
||
if (exec_file == 0)
|
||
exec_file = "";
|
||
printf_unfiltered ("Detaching from program: %s %s\n",
|
||
exec_file, target_pid_to_str (inferior_pid));
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
if (args)
|
||
siggnal = atoi (args);
|
||
|
||
m3_do_detach (siggnal);
|
||
inferior_pid = 0;
|
||
unpush_target (&m3_ops); /* Pop out of handling an inferior */
|
||
}
|
||
#endif /* ATTACH_DETACH */
|
||
|
||
/* Get ready to modify the registers array. On machines which store
|
||
individual registers, this doesn't need to do anything. On machines
|
||
which store all the registers in one fell swoop, this makes sure
|
||
that registers contains all the registers from the program being
|
||
debugged. */
|
||
|
||
static void
|
||
m3_prepare_to_store ()
|
||
{
|
||
#ifdef CHILD_PREPARE_TO_STORE
|
||
CHILD_PREPARE_TO_STORE ();
|
||
#endif
|
||
}
|
||
|
||
/* Print status information about what we're accessing. */
|
||
|
||
static void
|
||
m3_files_info (ignore)
|
||
struct target_ops *ignore;
|
||
{
|
||
/* FIXME: should print MID and all that crap. */
|
||
printf_unfiltered ("\tUsing the running image of %s %s.\n",
|
||
attach_flag? "attached": "child", target_pid_to_str (inferior_pid));
|
||
}
|
||
|
||
static void
|
||
m3_open (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
error ("Use the \"run\" command to start a Unix child process.");
|
||
}
|
||
|
||
#ifdef DUMP_SYSCALL
|
||
#ifdef __STDC__
|
||
#define STR(x) #x
|
||
#else
|
||
#define STR(x) "x"
|
||
#endif
|
||
|
||
char *bsd1_names[] = {
|
||
"execve",
|
||
"fork",
|
||
"take_signal",
|
||
"sigreturn",
|
||
"getrusage",
|
||
"chdir",
|
||
"chroot",
|
||
"open",
|
||
"creat",
|
||
"mknod",
|
||
"link",
|
||
"symlink",
|
||
"unlink",
|
||
"access",
|
||
"stat",
|
||
"readlink",
|
||
"chmod",
|
||
"chown",
|
||
"utimes",
|
||
"truncate",
|
||
"rename",
|
||
"mkdir",
|
||
"rmdir",
|
||
"xutimes",
|
||
"mount",
|
||
"umount",
|
||
"acct",
|
||
"setquota",
|
||
"write_short",
|
||
"write_long",
|
||
"send_short",
|
||
"send_long",
|
||
"sendto_short",
|
||
"sendto_long",
|
||
"select",
|
||
"task_by_pid",
|
||
"recvfrom_short",
|
||
"recvfrom_long",
|
||
"setgroups",
|
||
"setrlimit",
|
||
"sigvec",
|
||
"sigstack",
|
||
"settimeofday",
|
||
"adjtime",
|
||
"setitimer",
|
||
"sethostname",
|
||
"bind",
|
||
"accept",
|
||
"connect",
|
||
"setsockopt",
|
||
"getsockopt",
|
||
"getsockname",
|
||
"getpeername",
|
||
"init_process",
|
||
"table_set",
|
||
"table_get",
|
||
"pioctl",
|
||
"emulator_error",
|
||
"readwrite",
|
||
"share_wakeup",
|
||
0,
|
||
"maprw_request_it",
|
||
"maprw_release_it",
|
||
"maprw_remap",
|
||
"pid_by_task",
|
||
};
|
||
|
||
int bsd1_nnames = sizeof(bsd1_names)/sizeof(bsd1_names[0]);
|
||
|
||
char*
|
||
name_str(name,buf)
|
||
|
||
int name;
|
||
char *buf;
|
||
|
||
{
|
||
switch (name) {
|
||
case MACH_MSG_TYPE_BOOLEAN:
|
||
return "boolean";
|
||
case MACH_MSG_TYPE_INTEGER_16:
|
||
return "short";
|
||
case MACH_MSG_TYPE_INTEGER_32:
|
||
return "long";
|
||
case MACH_MSG_TYPE_CHAR:
|
||
return "char";
|
||
case MACH_MSG_TYPE_BYTE:
|
||
return "byte";
|
||
case MACH_MSG_TYPE_REAL:
|
||
return "real";
|
||
case MACH_MSG_TYPE_STRING:
|
||
return "string";
|
||
default:
|
||
sprintf(buf,"%d",name);
|
||
return buf;
|
||
}
|
||
}
|
||
|
||
char *
|
||
id_str(id,buf)
|
||
|
||
int id;
|
||
char *buf;
|
||
|
||
{
|
||
char *p;
|
||
if (id >= 101000 && id < 101000+bsd1_nnames) {
|
||
if (p = bsd1_names[id-101000])
|
||
return p;
|
||
}
|
||
if (id == 102000)
|
||
return "psignal_retry";
|
||
if (id == 100000)
|
||
return "syscall";
|
||
sprintf(buf,"%d",id);
|
||
return buf;
|
||
}
|
||
|
||
print_msg(mp)
|
||
mach_msg_header_t *mp;
|
||
{
|
||
char *fmt_x = "%20s : 0x%08x\n";
|
||
char *fmt_d = "%20s : %10d\n";
|
||
char *fmt_s = "%20s : %s\n";
|
||
char buf[100];
|
||
|
||
puts_filtered ("\n");
|
||
#define pr(fmt,h,x) printf_filtered(fmt,STR(x),(h).x)
|
||
pr(fmt_x,(*mp),msgh_bits);
|
||
pr(fmt_d,(*mp),msgh_size);
|
||
pr(fmt_x,(*mp),msgh_remote_port);
|
||
pr(fmt_x,(*mp),msgh_local_port);
|
||
pr(fmt_d,(*mp),msgh_kind);
|
||
printf_filtered(fmt_s,STR(msgh_id),id_str(mp->msgh_id,buf));
|
||
|
||
if (debug_level > 1)
|
||
{
|
||
char *p,*ep,*dp;
|
||
int plen;
|
||
p = (char*)mp;
|
||
ep = p+mp->msgh_size;
|
||
p += sizeof(*mp);
|
||
for(; p < ep; p += plen) {
|
||
mach_msg_type_t *tp;
|
||
mach_msg_type_long_t *tlp;
|
||
int name,size,number;
|
||
tp = (mach_msg_type_t*)p;
|
||
if (tp->msgt_longform) {
|
||
tlp = (mach_msg_type_long_t*)tp;
|
||
name = tlp->msgtl_name;
|
||
size = tlp->msgtl_size;
|
||
number = tlp->msgtl_number;
|
||
plen = sizeof(*tlp);
|
||
} else {
|
||
name = tp->msgt_name;
|
||
size = tp->msgt_size;
|
||
number = tp->msgt_number;
|
||
plen = sizeof(*tp);
|
||
}
|
||
printf_filtered("name=%-16s size=%2d number=%7d inline=%d long=%d deal=%d\n",
|
||
name_str(name,buf),size,number,tp->msgt_inline,
|
||
tp->msgt_longform, tp->msgt_deallocate);
|
||
dp = p+plen;
|
||
if (tp->msgt_inline) {
|
||
int l;
|
||
l = size*number/8;
|
||
l = (l+sizeof(long)-1)&~((sizeof(long))-1);
|
||
plen += l;
|
||
print_data(dp,size,number);
|
||
} else {
|
||
plen += sizeof(int*);
|
||
}
|
||
printf_filtered("plen=%d\n",plen);
|
||
}
|
||
}
|
||
}
|
||
|
||
print_data(p,size,number)
|
||
|
||
char *p;
|
||
|
||
{
|
||
int *ip;
|
||
short *sp;
|
||
int i;
|
||
|
||
switch (size) {
|
||
case 8:
|
||
for(i = 0; i < number; i++) {
|
||
printf_filtered(" %02x",p[i]);
|
||
}
|
||
break;
|
||
case 16:
|
||
sp = (short*)p;
|
||
for(i = 0; i < number; i++) {
|
||
printf_filtered(" %04x",sp[i]);
|
||
}
|
||
break;
|
||
case 32:
|
||
ip = (int*)p;
|
||
for(i = 0; i < number; i++) {
|
||
printf_filtered(" %08x",ip[i]);
|
||
}
|
||
break;
|
||
}
|
||
puts_filtered("\n");
|
||
}
|
||
#endif DUMP_SYSCALL
|
||
|
||
static void
|
||
m3_stop ()
|
||
{
|
||
error ("to_stop target function not implemented");
|
||
}
|
||
|
||
struct target_ops m3_ops = {
|
||
"mach", /* to_shortname */
|
||
"Mach child process", /* to_longname */
|
||
"Mach child process (started by the \"run\" command).", /* to_doc */
|
||
m3_open, /* to_open */
|
||
0, /* to_close */
|
||
m3_attach, /* to_attach */
|
||
m3_detach, /* to_detach */
|
||
m3_resume, /* to_resume */
|
||
mach_really_wait, /* to_wait */
|
||
fetch_inferior_registers, /* to_fetch_registers */
|
||
store_inferior_registers, /* to_store_registers */
|
||
m3_prepare_to_store, /* to_prepare_to_store */
|
||
m3_xfer_memory, /* to_xfer_memory */
|
||
m3_files_info, /* to_files_info */
|
||
memory_insert_breakpoint, /* to_insert_breakpoint */
|
||
memory_remove_breakpoint, /* to_remove_breakpoint */
|
||
terminal_init_inferior, /* to_terminal_init */
|
||
terminal_inferior, /* to_terminal_inferior */
|
||
terminal_ours_for_output, /* to_terminal_ours_for_output */
|
||
terminal_ours, /* to_terminal_ours */
|
||
child_terminal_info, /* to_terminal_info */
|
||
m3_kill_inferior, /* to_kill */
|
||
0, /* to_load */
|
||
0, /* to_lookup_symbol */
|
||
|
||
m3_create_inferior, /* to_create_inferior */
|
||
m3_mourn_inferior, /* to_mourn_inferior */
|
||
m3_can_run, /* to_can_run */
|
||
0, /* to_notice_signals */
|
||
0, /* to_thread_alive */
|
||
m3_stop, /* to_stop */
|
||
process_stratum, /* to_stratum */
|
||
0, /* to_next */
|
||
1, /* to_has_all_memory */
|
||
1, /* to_has_memory */
|
||
1, /* to_has_stack */
|
||
1, /* to_has_registers */
|
||
1, /* to_has_execution */
|
||
0, /* sections */
|
||
0, /* sections_end */
|
||
OPS_MAGIC /* to_magic */
|
||
};
|
||
|
||
void
|
||
_initialize_m3_nat ()
|
||
{
|
||
kern_return_t ret;
|
||
|
||
add_target (&m3_ops);
|
||
|
||
ret = mach_port_allocate(mach_task_self(),
|
||
MACH_PORT_RIGHT_PORT_SET,
|
||
&inferior_wait_port_set);
|
||
if (ret != KERN_SUCCESS)
|
||
fatal("initial port set %s",mach_error_string(ret));
|
||
|
||
/* mach_really_wait now waits for this */
|
||
currently_waiting_for = inferior_wait_port_set;
|
||
|
||
ret = netname_look_up(name_server_port, hostname, "MachID", &mid_server);
|
||
if (ret != KERN_SUCCESS)
|
||
{
|
||
mid_server = MACH_PORT_NULL;
|
||
|
||
warning ("initialize machid: netname_lookup_up(MachID) : %s",
|
||
mach_error_string(ret));
|
||
warning ("Some (most?) features disabled...");
|
||
}
|
||
|
||
mid_auth = mach_privileged_host_port();
|
||
if (mid_auth == MACH_PORT_NULL)
|
||
mid_auth = mach_task_self();
|
||
|
||
obstack_init (port_chain_obstack);
|
||
|
||
ret = mach_port_allocate (mach_task_self (),
|
||
MACH_PORT_RIGHT_RECEIVE,
|
||
&thread_exception_port);
|
||
CHK ("Creating thread_exception_port for single stepping", ret);
|
||
|
||
ret = mach_port_insert_right (mach_task_self (),
|
||
thread_exception_port,
|
||
thread_exception_port,
|
||
MACH_MSG_TYPE_MAKE_SEND);
|
||
CHK ("Inserting send right to thread_exception_port", ret);
|
||
|
||
/* Allocate message port */
|
||
ret = mach_port_allocate (mach_task_self (),
|
||
MACH_PORT_RIGHT_RECEIVE,
|
||
&our_message_port);
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("Creating message port %s", mach_error_string (ret));
|
||
else
|
||
{
|
||
char buf[ MAX_NAME_LEN ];
|
||
ret = mach_port_move_member(mach_task_self (),
|
||
our_message_port,
|
||
inferior_wait_port_set);
|
||
if (ret != KERN_SUCCESS)
|
||
warning ("message move member %s", mach_error_string (ret));
|
||
|
||
|
||
/* @@@@ No way to change message port name currently */
|
||
/* Foo. This assumes gdb has a unix pid */
|
||
sprintf (buf, "gdb-%d", getpid ());
|
||
gdb_register_port (buf, our_message_port);
|
||
}
|
||
|
||
/* Heap for thread commands */
|
||
obstack_init (cproc_obstack);
|
||
|
||
add_mach_specific_commands ();
|
||
}
|