+2008-11-27 Tristan Gingold <gingold@adacore.com>
+
+ * NEWS: Add entry for new native configuration: Darwin.
+ * configure.host: Add Darwin host.
+ * configure.tgt: Add Darwin target.
+ * defs.h (enum gdb_osabi): Add GDB_OSABI_DARWIN.
+ * osabi.c (gdb_osabi_names): Add name for Darwin abi.
+ * i386-darwin-nat.c: New file.
+ * i386-darwin-tdep.c: New file.
+ * machoread.c: New file.
+ * darwin-nat-info.c: New file.
+ * darwin-nat.c: New file.
+ * darwin-nat.h: New file.
+ * darwin.defs: New file.
+ * config/i386/darwin.mh: New file.
+
2008-11-26 Tristan Gingold <gingold@adacore.com>
* MAINTAINERS: Add myself for write after approval privileges.
These allow macros to be defined, undefined, and listed
interactively.
+* New native configurations
+
+x86/x86_64 Darwin i[34567]86-*-darwin*
+
* New targets
x86 DICOS i[34567]86-*-dicos*
--- /dev/null
+# Host: IA86 running Darwin
+
+NATDEPFILES = fork-child.o machoread.o darwin-nat.o excServer.o \
+ i386-darwin-nat.o i386-nat.o amd64-nat.o darwin-nat-info.o
+
+# Trick so that excServer.c is not the default target!
+_all: all
+
+excServer.c: darwin.defs
+ /usr/bin/mig -I. $<
case "${host}" in
+*-*-darwin*) gdb_host=darwin ;;
+
alpha*-*-osf[3456789]*) gdb_host=alpha-osf3 ;;
alpha*-*-linux*) gdb_host=alpha-linux ;;
alpha*-*-freebsd* | alpha*-*-kfreebsd*-gnu)
gdb_target_obs="hppa-tdep.o"
;;
+i[34567]86-*-darwin*)
+ # Target: Darwin/i386
+ gdb_target_obs="amd64-tdep.o i386-tdep.o i387-tdep.o \
+ i386-darwin-tdep.o"
+ ;;
i[34567]86-*-dicos*)
# Target: DICOS/i386
gdb_target_obs="i386-tdep.o i387-tdep.o \
--- /dev/null
+/* Darwin support for GDB, the GNU debugger.
+ Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2008
+ Free Software Foundation, Inc.
+
+ Contributed by Apple Computer, 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. */
+
+/* The name of the ppc_thread_state structure, and the names of its
+ members, have been changed for Unix conformance reasons. The easiest
+ way to have gdb build on systems with the older names and systems
+ with the newer names is to build this compilation unit with the
+ non-conformant define below. This doesn't seem to cause the resulting
+ binary any problems but it seems like it could cause us problems in
+ the future. It'd be good to remove this at some point when compiling on
+ Tiger is no longer important. */
+
+#include "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "gdbcore.h"
+#include "value.h"
+#include "gdbcmd.h"
+#include "inferior.h"
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+
+#include "darwin-nat.h"
+
+#include <mach/thread_info.h>
+#include <mach/thread_act.h>
+#include <mach/task.h>
+#include <mach/vm_map.h>
+#include <mach/mach_port.h>
+#include <mach/mach_init.h>
+#include <mach/mach_vm.h>
+
+#define CHECK_ARGS(what, args) do { \
+ if ((NULL == args) || ((args[0] != '0') && (args[1] != 'x'))) \
+ error("%s must be specified with 0x...", what); \
+} while (0)
+
+#define PRINT_FIELD(structure, field) \
+ printf_unfiltered(_(#field":\t%#lx\n"), (unsigned long) (structure)->field)
+
+#define PRINT_TV_FIELD(structure, field) \
+ printf_unfiltered(_(#field":\t%u.%06u sec\n"), \
+ (unsigned) (structure)->field.seconds, \
+ (unsigned) (structure)->field.microseconds)
+
+#define task_self mach_task_self
+#define task_by_unix_pid task_for_pid
+#define port_name_array_t mach_port_array_t
+#define port_type_array_t mach_port_array_t
+
+static void
+info_mach_tasks_command (char *args, int from_tty)
+{
+ int sysControl[4];
+ int count, index;
+ size_t length;
+ struct kinfo_proc *procInfo;
+
+ sysControl[0] = CTL_KERN;
+ sysControl[1] = KERN_PROC;
+ sysControl[2] = KERN_PROC_ALL;
+
+ sysctl (sysControl, 3, NULL, &length, NULL, 0);
+ procInfo = (struct kinfo_proc *) xmalloc (length);
+ sysctl (sysControl, 3, procInfo, &length, NULL, 0);
+
+ count = (length / sizeof (struct kinfo_proc));
+ printf_unfiltered (_("%d processes:\n"), count);
+ for (index = 0; index < count; ++index)
+ {
+ kern_return_t result;
+ mach_port_t taskPort;
+
+ result =
+ task_by_unix_pid (mach_task_self (), procInfo[index].kp_proc.p_pid,
+ &taskPort);
+ if (KERN_SUCCESS == result)
+ {
+ printf_unfiltered (_(" %s is %d has task %#x\n"),
+ procInfo[index].kp_proc.p_comm,
+ procInfo[index].kp_proc.p_pid, taskPort);
+ }
+ else
+ {
+ printf_unfiltered (_(" %s is %d unknown task port\n"),
+ procInfo[index].kp_proc.p_comm,
+ procInfo[index].kp_proc.p_pid);
+ }
+ }
+
+ xfree (procInfo);
+}
+
+static task_t
+get_task_from_args (char *args)
+{
+ task_t task;
+ char *eptr;
+
+ if (args == NULL || *args == 0)
+ {
+ if (darwin_inf->task == TASK_NULL)
+ printf_unfiltered (_("No inferior running\n"));
+ return darwin_inf->task;
+ }
+ if (strcmp (args, "gdb") == 0)
+ return mach_task_self ();
+ task = strtoul (args, &eptr, 0);
+ if (*eptr)
+ {
+ printf_unfiltered (_("cannot parse task id '%s'\n"), args);
+ return TASK_NULL;
+ }
+ return task;
+}
+
+static void
+info_mach_task_command (char *args, int from_tty)
+{
+ union
+ {
+ struct task_basic_info basic;
+ struct task_events_info events;
+ struct task_thread_times_info thread_times;
+ } task_info_data;
+
+ kern_return_t result;
+ unsigned int info_count;
+ task_t task;
+
+ task = get_task_from_args (args);
+ if (task == TASK_NULL)
+ return;
+
+ printf_unfiltered (_("TASK_BASIC_INFO for 0x%x:\n"), task);
+ info_count = TASK_BASIC_INFO_COUNT;
+ result = task_info (task,
+ TASK_BASIC_INFO,
+ (task_info_t) & task_info_data.basic, &info_count);
+ MACH_CHECK_ERROR (result);
+
+ PRINT_FIELD (&task_info_data.basic, suspend_count);
+ PRINT_FIELD (&task_info_data.basic, virtual_size);
+ PRINT_FIELD (&task_info_data.basic, resident_size);
+ PRINT_TV_FIELD (&task_info_data.basic, user_time);
+ PRINT_TV_FIELD (&task_info_data.basic, system_time);
+ printf_unfiltered (_("\nTASK_EVENTS_INFO:\n"));
+ info_count = TASK_EVENTS_INFO_COUNT;
+ result = task_info (task,
+ TASK_EVENTS_INFO,
+ (task_info_t) & task_info_data.events, &info_count);
+ MACH_CHECK_ERROR (result);
+
+ PRINT_FIELD (&task_info_data.events, faults);
+#if 0
+ PRINT_FIELD (&task_info_data.events, zero_fills);
+ PRINT_FIELD (&task_info_data.events, reactivations);
+#endif
+ PRINT_FIELD (&task_info_data.events, pageins);
+ PRINT_FIELD (&task_info_data.events, cow_faults);
+ PRINT_FIELD (&task_info_data.events, messages_sent);
+ PRINT_FIELD (&task_info_data.events, messages_received);
+ printf_unfiltered (_("\nTASK_THREAD_TIMES_INFO:\n"));
+ info_count = TASK_THREAD_TIMES_INFO_COUNT;
+ result = task_info (task,
+ TASK_THREAD_TIMES_INFO,
+ (task_info_t) & task_info_data.thread_times,
+ &info_count);
+ MACH_CHECK_ERROR (result);
+ PRINT_TV_FIELD (&task_info_data.thread_times, user_time);
+ PRINT_TV_FIELD (&task_info_data.thread_times, system_time);
+}
+
+static void
+info_mach_ports_command (char *args, int from_tty)
+{
+ port_name_array_t names;
+ port_type_array_t types;
+ unsigned int name_count, type_count;
+ kern_return_t result;
+ int index;
+ task_t task;
+
+ task = get_task_from_args (args);
+ if (task == TASK_NULL)
+ return;
+
+ result = mach_port_names (task, &names, &name_count, &types, &type_count);
+ MACH_CHECK_ERROR (result);
+
+ gdb_assert (name_count == type_count);
+
+ printf_unfiltered (_("Ports for task 0x%x:\n"), task);
+ printf_unfiltered (_("port type\n"));
+ for (index = 0; index < name_count; ++index)
+ {
+ mach_port_t port = names[index];
+ unsigned int j;
+ struct type_descr
+ {
+ mach_port_type_t type;
+ const char *name;
+ mach_port_right_t right;
+ };
+ static struct type_descr descrs[] =
+ {
+ {MACH_PORT_TYPE_SEND, "send", MACH_PORT_RIGHT_SEND},
+ {MACH_PORT_TYPE_SEND_ONCE, "send-once", MACH_PORT_RIGHT_SEND_ONCE},
+ {MACH_PORT_TYPE_RECEIVE, "receive", MACH_PORT_RIGHT_RECEIVE},
+ {MACH_PORT_TYPE_PORT_SET, "port-set", MACH_PORT_RIGHT_PORT_SET},
+ {MACH_PORT_TYPE_DEAD_NAME, "dead", MACH_PORT_RIGHT_DEAD_NAME}
+ };
+
+ printf_unfiltered (_("%04x: %08x "), port, types[index]);
+ for (j = 0; j < sizeof(descrs) / sizeof(*descrs); j++)
+ if (types[index] & descrs[j].type)
+ {
+ mach_port_urefs_t ref;
+ kern_return_t ret;
+
+ printf_unfiltered (_(" %s("), descrs[j].name);
+ ret = mach_port_get_refs (task, port, descrs[j].right, &ref);
+ if (ret != KERN_SUCCESS)
+ printf_unfiltered (_("??"));
+ else
+ printf_unfiltered (_("%u"), ref);
+ printf_unfiltered (_(" refs)"));
+ }
+
+ if (task == task_self ())
+ {
+ if (port == task_self())
+ printf_unfiltered (_(" gdb-task"));
+ else if (port == darwin_host_self)
+ printf_unfiltered (_(" host-self"));
+ else if (port == darwin_not_port)
+ printf_unfiltered (_(" gdb-notifier"));
+ else if (port == darwin_ex_port)
+ printf_unfiltered (_(" gdb-exception"));
+ else if (port == darwin_port_set)
+ printf_unfiltered (_(" gdb-port_set"));
+ else if (darwin_inf && port == darwin_inf->task)
+ printf_unfiltered (_(" inferior-task"));
+ else if (darwin_inf && darwin_inf->threads)
+ {
+ int k;
+ thread_t t;
+ for (k = 0; VEC_iterate(thread_t, darwin_inf->threads, k, t); k++)
+ if (port == t)
+ {
+ printf_unfiltered (_(" inferior-thread for 0x%x"),
+ darwin_inf->task);
+ break;
+ }
+ }
+ }
+ printf_unfiltered (_("\n"));
+ }
+
+ vm_deallocate (task_self (), (vm_address_t) names,
+ (name_count * sizeof (mach_port_t)));
+ vm_deallocate (task_self (), (vm_address_t) types,
+ (type_count * sizeof (mach_port_type_t)));
+}
+
+
+void
+darwin_debug_port_info (task_t task, mach_port_t port)
+{
+ kern_return_t kret;
+ mach_port_status_t status;
+ mach_msg_type_number_t len = sizeof (status);
+
+ kret = mach_port_get_attributes
+ (task, port, MACH_PORT_RECEIVE_STATUS, (mach_port_info_t)&status, &len);
+ MACH_CHECK_ERROR (kret);
+
+ printf_unfiltered (_("Port 0x%lx in task 0x%lx:\n"), (unsigned long) port,
+ (unsigned long) task);
+ printf_unfiltered (_(" port set: 0x%x\n"), status.mps_pset);
+ printf_unfiltered (_(" seqno: 0x%x\n"), status.mps_seqno);
+ printf_unfiltered (_(" mscount: 0x%x\n"), status.mps_mscount);
+ printf_unfiltered (_(" qlimit: 0x%x\n"), status.mps_qlimit);
+ printf_unfiltered (_(" msgcount: 0x%x\n"), status.mps_msgcount);
+ printf_unfiltered (_(" sorights: 0x%x\n"), status.mps_sorights);
+ printf_unfiltered (_(" srights: 0x%x\n"), status.mps_srights);
+ printf_unfiltered (_(" pdrequest: 0x%x\n"), status.mps_pdrequest);
+ printf_unfiltered (_(" nsrequest: 0x%x\n"), status.mps_nsrequest);
+ printf_unfiltered (_(" flags: 0x%x\n"), status.mps_flags);
+}
+
+static void
+info_mach_port_command (char *args, int from_tty)
+{
+ task_t task;
+ mach_port_t port;
+
+ CHECK_ARGS (_("Task and port"), args);
+ sscanf (args, "0x%x 0x%x", &task, &port);
+
+ darwin_debug_port_info (task, port);
+}
+
+static void
+info_mach_threads_command (char *args, int from_tty)
+{
+ thread_array_t threads;
+ unsigned int thread_count;
+ kern_return_t result;
+ task_t task;
+ int i;
+
+ task = get_task_from_args (args);
+ if (task == TASK_NULL)
+ return;
+
+ result = task_threads (task, &threads, &thread_count);
+ MACH_CHECK_ERROR (result);
+
+ printf_unfiltered (_("Threads in task %#x:\n"), task);
+ for (i = 0; i < thread_count; ++i)
+ {
+ printf_unfiltered (_(" %#x\n"), threads[i]);
+ mach_port_deallocate (task_self (), threads[i]);
+ }
+
+ vm_deallocate (task_self (), (vm_address_t) threads,
+ (thread_count * sizeof (thread_t)));
+}
+
+static void
+info_mach_thread_command (char *args, int from_tty)
+{
+ union
+ {
+ struct thread_basic_info basic;
+ } thread_info_data;
+
+ thread_t thread;
+ kern_return_t result;
+ unsigned int info_count;
+
+ CHECK_ARGS (_("Thread"), args);
+ sscanf (args, "0x%x", &thread);
+
+ printf_unfiltered (_("THREAD_BASIC_INFO\n"));
+ info_count = THREAD_BASIC_INFO_COUNT;
+ result = thread_info (thread,
+ THREAD_BASIC_INFO,
+ (thread_info_t) & thread_info_data.basic,
+ &info_count);
+ MACH_CHECK_ERROR (result);
+
+#if 0
+ PRINT_FIELD (&thread_info_data.basic, user_time);
+ PRINT_FIELD (&thread_info_data.basic, system_time);
+#endif
+ PRINT_FIELD (&thread_info_data.basic, cpu_usage);
+ PRINT_FIELD (&thread_info_data.basic, run_state);
+ PRINT_FIELD (&thread_info_data.basic, flags);
+ PRINT_FIELD (&thread_info_data.basic, suspend_count);
+ PRINT_FIELD (&thread_info_data.basic, sleep_time);
+}
+
+static const char *
+unparse_protection (vm_prot_t p)
+{
+ switch (p)
+ {
+ case VM_PROT_NONE:
+ return "---";
+ case VM_PROT_READ:
+ return "r--";
+ case VM_PROT_WRITE:
+ return "-w-";
+ case VM_PROT_READ | VM_PROT_WRITE:
+ return "rw-";
+ case VM_PROT_EXECUTE:
+ return "--x";
+ case VM_PROT_EXECUTE | VM_PROT_READ:
+ return "r-x";
+ case VM_PROT_EXECUTE | VM_PROT_WRITE:
+ return "-wx";
+ case VM_PROT_EXECUTE | VM_PROT_WRITE | VM_PROT_READ:
+ return "rwx";
+ default:
+ return "???";
+ }
+}
+
+static const char *
+unparse_inheritance (vm_inherit_t i)
+{
+ switch (i)
+ {
+ case VM_INHERIT_SHARE:
+ return _("share");
+ case VM_INHERIT_COPY:
+ return _("copy ");
+ case VM_INHERIT_NONE:
+ return _("none ");
+ default:
+ return _("??? ");
+ }
+}
+
+static const char *
+unparse_share_mode (unsigned char p)
+{
+ switch (p)
+ {
+ case SM_COW:
+ return _("cow");
+ case SM_PRIVATE:
+ return _("private");
+ case SM_EMPTY:
+ return _("empty");
+ case SM_SHARED:
+ return _("shared");
+ case SM_TRUESHARED:
+ return _("true-shrd");
+ case SM_PRIVATE_ALIASED:
+ return _("prv-alias");
+ case SM_SHARED_ALIASED:
+ return _("shr-alias");
+ default:
+ return _("???");
+ }
+}
+
+static const char *
+unparse_user_tag (unsigned int tag)
+{
+ switch (tag)
+ {
+ case 0:
+ return _("default");
+ case VM_MEMORY_MALLOC:
+ return _("malloc");
+ case VM_MEMORY_MALLOC_SMALL:
+ return _("malloc_small");
+ case VM_MEMORY_MALLOC_LARGE:
+ return _("malloc_large");
+ case VM_MEMORY_MALLOC_HUGE:
+ return _("malloc_huge");
+ case VM_MEMORY_SBRK:
+ return _("sbrk");
+ case VM_MEMORY_REALLOC:
+ return _("realloc");
+ case VM_MEMORY_MALLOC_TINY:
+ return _("malloc_tiny");
+ case VM_MEMORY_ANALYSIS_TOOL:
+ return _("analysis_tool");
+ case VM_MEMORY_MACH_MSG:
+ return _("mach_msg");
+ case VM_MEMORY_IOKIT:
+ return _("iokit");
+ case VM_MEMORY_STACK:
+ return _("stack");
+ case VM_MEMORY_GUARD:
+ return _("guard");
+ case VM_MEMORY_SHARED_PMAP:
+ return _("shared_pmap");
+ case VM_MEMORY_DYLIB:
+ return _("dylib");
+ case VM_MEMORY_APPKIT:
+ return _("appkit");
+ case VM_MEMORY_FOUNDATION:
+ return _("foundation");
+ default:
+ return NULL;
+ }
+}
+
+static void
+darwin_debug_regions (task_t task, mach_vm_address_t address, int max)
+{
+ kern_return_t kret;
+ vm_region_basic_info_data_64_t info, prev_info;
+ mach_vm_address_t prev_address;
+ mach_vm_size_t size, prev_size;
+
+ mach_port_t object_name;
+ mach_msg_type_number_t count;
+
+ int nsubregions = 0;
+ int num_printed = 0;
+
+ count = VM_REGION_BASIC_INFO_COUNT_64;
+ kret = mach_vm_region (task, &address, &size, VM_REGION_BASIC_INFO_64,
+ (vm_region_info_t) &info, &count, &object_name);
+ if (kret != KERN_SUCCESS)
+ {
+ printf_filtered (_("No memory regions."));
+ return;
+ }
+ memcpy (&prev_info, &info, sizeof (vm_region_basic_info_data_64_t));
+ prev_address = address;
+ prev_size = size;
+ nsubregions = 1;
+
+ for (;;)
+ {
+ int print = 0;
+ int done = 0;
+
+ address = prev_address + prev_size;
+
+ /* Check to see if address space has wrapped around. */
+ if (address == 0)
+ print = done = 1;
+
+ if (!done)
+ {
+ count = VM_REGION_BASIC_INFO_COUNT_64;
+ kret =
+ mach_vm_region (task, &address, &size, VM_REGION_BASIC_INFO_64,
+ (vm_region_info_t) &info, &count, &object_name);
+ if (kret != KERN_SUCCESS)
+ {
+ size = 0;
+ print = done = 1;
+ }
+ }
+
+ if (address != prev_address + prev_size)
+ print = 1;
+
+ if ((info.protection != prev_info.protection)
+ || (info.max_protection != prev_info.max_protection)
+ || (info.inheritance != prev_info.inheritance)
+ || (info.shared != prev_info.reserved)
+ || (info.reserved != prev_info.reserved))
+ print = 1;
+
+ if (print)
+ {
+ printf_filtered (_("%s-%s %s/%s %s %s %s"),
+ paddr(prev_address),
+ paddr(prev_address + prev_size),
+ unparse_protection (prev_info.protection),
+ unparse_protection (prev_info.max_protection),
+ unparse_inheritance (prev_info.inheritance),
+ prev_info.shared ? _("shrd") : _("priv"),
+ prev_info.reserved ? _("reserved") : _("not-rsvd"));
+
+ if (nsubregions > 1)
+ printf_filtered (_(" (%d sub-rgn)"), nsubregions);
+
+ printf_filtered (_("\n"));
+
+ prev_address = address;
+ prev_size = size;
+ memcpy (&prev_info, &info, sizeof (vm_region_basic_info_data_64_t));
+ nsubregions = 1;
+
+ num_printed++;
+ }
+ else
+ {
+ prev_size += size;
+ nsubregions++;
+ }
+
+ if ((max > 0) && (num_printed >= max))
+ done = 1;
+
+ if (done)
+ break;
+ }
+}
+
+static void
+darwin_debug_regions_recurse (task_t task)
+{
+ mach_vm_address_t r_addr;
+ mach_vm_address_t r_start;
+ mach_vm_size_t r_size;
+ natural_t r_depth;
+ mach_msg_type_number_t r_info_size;
+ vm_region_submap_short_info_data_64_t r_info;
+ kern_return_t kret;
+ int ret;
+
+ r_start = 0;
+ r_depth = 0;
+ while (1)
+ {
+ const char *tag;
+
+ r_info_size = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64;
+ r_size = -1;
+ kret = mach_vm_region_recurse (task, &r_start, &r_size, &r_depth,
+ (vm_region_recurse_info_t) &r_info,
+ &r_info_size);
+ if (kret != KERN_SUCCESS)
+ break;
+ printf_filtered (_("%s-%s %s/%s %-5s %-10s %2d %s"),
+ paddr(r_start),
+ paddr(r_start + r_size),
+ unparse_protection (r_info.protection),
+ unparse_protection (r_info.max_protection),
+ unparse_inheritance (r_info.inheritance),
+ unparse_share_mode (r_info.share_mode),
+ r_depth,
+ r_info.is_submap ? _("sm ") : _("obj"));
+ tag = unparse_user_tag (r_info.user_tag);
+ if (tag)
+ printf_unfiltered (_(" %s\n"), tag);
+ else
+ printf_unfiltered (_(" %u\n"), r_info.user_tag);
+ if (r_info.is_submap)
+ r_depth++;
+ else
+ r_start += r_size;
+ }
+}
+
+
+static void
+darwin_debug_region (task_t task, mach_vm_address_t address)
+{
+ darwin_debug_regions (task, address, 1);
+}
+
+static void
+info_mach_regions_command (char *args, int from_tty)
+{
+ task_t task;
+
+ task = get_task_from_args (args);
+ if (task == TASK_NULL)
+ return;
+
+ darwin_debug_regions (task, 0, -1);
+}
+
+static void
+info_mach_regions_recurse_command (char *args, int from_tty)
+{
+ task_t task;
+
+ task = get_task_from_args (args);
+ if (task == TASK_NULL)
+ return;
+
+ darwin_debug_regions_recurse (task);
+}
+
+static void
+info_mach_region_command (char *exp, int from_tty)
+{
+ struct expression *expr;
+ struct value *val;
+ mach_vm_address_t address;
+
+ expr = parse_expression (exp);
+ val = evaluate_expression (expr);
+ if (TYPE_CODE (value_type (val)) == TYPE_CODE_REF)
+ {
+ val = value_ind (val);
+ }
+ /* In rvalue contexts, such as this, functions are coerced into
+ pointers to functions. */
+ if (TYPE_CODE (value_type (val)) == TYPE_CODE_FUNC
+ && VALUE_LVAL (val) == lval_memory)
+ {
+ address = VALUE_ADDRESS (val);
+ }
+ else
+ {
+ address = value_as_address (val);
+ }
+
+ if ((!darwin_inf) || (darwin_inf->task == TASK_NULL))
+ error (_("Inferior not available"));
+
+ darwin_debug_region (darwin_inf->task, address);
+}
+
+static void
+disp_exception (const darwin_exception_info *info)
+{
+ int i;
+
+ printf_filtered (_("%d exceptions:\n"), info->count);
+ for (i = 0; i < info->count; i++)
+ {
+ exception_mask_t mask = info->masks[i];
+
+ printf_filtered (_("port 0x%04x, behavior: "), info->ports[i]);
+ switch (info->behaviors[i])
+ {
+ case EXCEPTION_DEFAULT:
+ printf_unfiltered (_("default"));
+ break;
+ case EXCEPTION_STATE:
+ printf_unfiltered (_("state"));
+ break;
+ case EXCEPTION_STATE_IDENTITY:
+ printf_unfiltered (_("state-identity"));
+ break;
+ default:
+ printf_unfiltered (_("0x%x"), info->behaviors[i]);
+ }
+ printf_unfiltered (_(", masks:"));
+ if (mask & EXC_MASK_BAD_ACCESS)
+ printf_unfiltered (_(" BAD_ACCESS"));
+ if (mask & EXC_MASK_BAD_INSTRUCTION)
+ printf_unfiltered (_(" BAD_INSTRUCTION"));
+ if (mask & EXC_MASK_ARITHMETIC)
+ printf_unfiltered (_(" ARITHMETIC"));
+ if (mask & EXC_MASK_EMULATION)
+ printf_unfiltered (_(" EMULATION"));
+ if (mask & EXC_MASK_SOFTWARE)
+ printf_unfiltered (_(" SOFTWARE"));
+ if (mask & EXC_MASK_BREAKPOINT)
+ printf_unfiltered (_(" BREAKPOINT"));
+ if (mask & EXC_MASK_SYSCALL)
+ printf_unfiltered (_(" SYSCALL"));
+ if (mask & EXC_MASK_MACH_SYSCALL)
+ printf_unfiltered (_(" MACH_SYSCALL"));
+ if (mask & EXC_MASK_RPC_ALERT)
+ printf_unfiltered (_(" RPC_ALERT"));
+ if (mask & EXC_MASK_CRASH)
+ printf_unfiltered (_(" CRASH"));
+ printf_unfiltered (_("\n"));
+ }
+}
+
+static void
+info_mach_exceptions_command (char *args, int from_tty)
+{
+ int i;
+ task_t task;
+ kern_return_t kret;
+ darwin_exception_info info;
+
+ info.count = sizeof (info.ports) / sizeof (info.ports[0]);
+
+ if (args != NULL)
+ {
+ if (strcmp (args, "saved") == 0)
+ {
+ if (darwin_inf->task == TASK_NULL)
+ error (_("No inferior running\n"));
+ disp_exception (&darwin_inf->exception_info);
+ return;
+ }
+ else if (strcmp (args, "host") == 0)
+ {
+ /* FIXME: This need a the privilegied host port! */
+ kret = host_get_exception_ports
+ (darwin_host_self, EXC_MASK_ALL, info.masks,
+ &info.count, info.ports, info.behaviors, info.flavors);
+ MACH_CHECK_ERROR (kret);
+ disp_exception (&info);
+ }
+ else
+ error (_("Parameter is saved, host or none"));
+ }
+ else
+ {
+ if (darwin_inf->task == TASK_NULL)
+ error (_("No inferior running\n"));
+
+ kret = task_get_exception_ports
+ (darwin_inf->task, EXC_MASK_ALL, info.masks,
+ &info.count, info.ports, info.behaviors, info.flavors);
+ MACH_CHECK_ERROR (kret);
+ disp_exception (&info);
+ }
+}
+
+static void
+darwin_list_gdb_ports (const char *msg)
+{
+ mach_port_name_array_t names;
+ mach_port_type_array_t types;
+ unsigned int name_count, type_count;
+ kern_return_t result;
+ int i;
+
+ result = mach_port_names (mach_task_self (),
+ &names, &name_count, &types, &type_count);
+ MACH_CHECK_ERROR (result);
+
+ gdb_assert (name_count == type_count);
+
+ printf_unfiltered (_("Ports for %s:"), msg);
+ for (i = 0; i < name_count; ++i)
+ printf_unfiltered (_(" 0x%04x"), names[i]);
+ printf_unfiltered (_("\n"));
+
+ vm_deallocate (mach_task_self (), (vm_address_t) names,
+ (name_count * sizeof (mach_port_t)));
+ vm_deallocate (mach_task_self (), (vm_address_t) types,
+ (type_count * sizeof (mach_port_type_t)));
+}
+
+void
+_initialize_darwin_info_commands (void)
+{
+ add_info ("mach-tasks", info_mach_tasks_command,
+ _("Get list of tasks in system."));
+ add_info ("mach-ports", info_mach_ports_command,
+ _("Get list of ports in a task."));
+ add_info ("mach-port", info_mach_port_command,
+ _("Get info on a specific port."));
+ add_info ("mach-task", info_mach_task_command,
+ _("Get info on a specific task."));
+ add_info ("mach-threads", info_mach_threads_command,
+ _("Get list of threads in a task."));
+ add_info ("mach-thread", info_mach_thread_command,
+ _("Get info on a specific thread."));
+
+ add_info ("mach-regions", info_mach_regions_command,
+ _("Get information on all mach region for the task."));
+ add_info ("mach-regions-rec", info_mach_regions_recurse_command,
+ _("Get information on all mach sub region for the task."));
+ add_info ("mach-region", info_mach_region_command,
+ _("Get information on mach region at given address."));
+
+ add_info ("mach-exceptions", info_mach_exceptions_command,
+ _("Disp mach exceptions."));
+}
--- /dev/null
+/* Darwin support for GDB, the GNU debugger.
+ Copyright (C) 2008 Free Software Foundation, Inc.
+
+ Contributed by AdaCore.
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "defs.h"
+#include "top.h"
+#include "inferior.h"
+#include "target.h"
+#include "symfile.h"
+#include "symtab.h"
+#include "objfiles.h"
+#include "gdb.h"
+#include "gdbcmd.h"
+#include "gdbcore.h"
+#include "gdbthread.h"
+#include "regcache.h"
+#include "event-top.h"
+#include "inf-loop.h"
+#include "gdb_stat.h"
+#include "exceptions.h"
+#include "inf-child.h"
+#include "value.h"
+#include "arch-utils.h"
+#include "bfd.h"
+
+#include <sys/ptrace.h>
+#include <sys/signal.h>
+#include <machine/setjmp.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <signal.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/proc.h>
+
+#include <mach/mach_error.h>
+#include <mach/mach_vm.h>
+#include <mach/mach_init.h>
+#include <mach/vm_map.h>
+#include <mach/task.h>
+#include <mach/mach_port.h>
+#include <mach/thread_act.h>
+#include <mach/port.h>
+
+#include "darwin-nat.h"
+
+/* Quick overview.
+ Darwin kernel is Mach + BSD derived kernel. Note that they share the
+ same memory space and are linked together (ie there is no micro-kernel).
+
+ Although ptrace(2) is available on Darwin, it is not complete. We have
+ to use Mach calls to read and write memory and to modify registers. We
+ also use Mach to get inferior faults. As we cannot use select(2) or
+ signals with Mach port (the Mach communication channel), signals are
+ reported to gdb as an exception. Furthermore we detect death of the
+ inferior through a Mach notification message. This way we only wait
+ on Mach ports.
+
+ Some Mach documentation is available for Apple xnu source package or
+ from the web. */
+
+
+#define PTRACE(CMD, PID, ADDR, SIG) \
+ darwin_ptrace(#CMD, CMD, (PID), (ADDR), (SIG))
+
+extern boolean_t exc_server (mach_msg_header_t *in, mach_msg_header_t *out);
+
+static void darwin_stop (ptid_t);
+
+static void darwin_resume (ptid_t ptid, int step,
+ enum target_signal signal);
+
+static ptid_t darwin_wait (ptid_t ptid, struct target_waitstatus *status);
+
+static void darwin_mourn_inferior (struct target_ops *ops);
+
+static int darwin_lookup_task (char *args, task_t * ptask, int *ppid);
+
+static void darwin_kill_inferior (void);
+
+static void darwin_ptrace_me (void);
+
+static void darwin_ptrace_him (int pid);
+
+static void darwin_create_inferior (struct target_ops *ops, char *exec_file,
+ char *allargs, char **env, int from_tty);
+
+static void darwin_files_info (struct target_ops *ops);
+
+static char *darwin_pid_to_str (ptid_t tpid);
+
+static int darwin_thread_alive (ptid_t tpid);
+
+/* Current inferior. */
+darwin_inferior *darwin_inf = NULL;
+
+/* Target operations for Darwin. */
+static struct target_ops *darwin_ops;
+
+/* Task identifier of gdb. */
+static task_t gdb_task;
+
+/* A copy of mach_host_self (). */
+mach_port_t darwin_host_self;
+
+/* Exception port. */
+mach_port_t darwin_ex_port;
+
+/* Notification port. */
+mach_port_t darwin_not_port;
+
+/* Port set. */
+mach_port_t darwin_port_set;
+
+/* Page size. */
+static vm_size_t mach_page_size;
+
+/* If Set, catch all mach exceptions (before they are converted to signals
+ by the kernel). */
+static int enable_mach_exceptions;
+
+#define PAGE_TRUNC(x) ((x) & ~(mach_page_size - 1))
+#define PAGE_ROUND(x) PAGE_TRUNC((x) + mach_page_size - 1)
+
+/* Buffer containing received message and to be sent message. */
+static union
+{
+ mach_msg_header_t hdr;
+ char data[1024];
+} msgin, msgout;
+
+/* Current message state.
+ If the kernel has sent a message it expects a reply and the inferior
+ can't be killed before. */
+static enum msg_state { NO_MESSAGE, GOT_MESSAGE, REPLY_SENT } msg_state;
+
+/* Unmarshalled received message. */
+static struct exc_msg
+{
+ /* Receive port. */
+ mach_port_t port;
+
+ /* Thread and task taking the exception. */
+ mach_port_t thread_port;
+ mach_port_t task_port;
+
+ /* Type of the exception. */
+ exception_type_t ex_type;
+
+ /* Machine dependent details. */
+ mach_msg_type_number_t data_count;
+ integer_t ex_data[4];
+} exc_msg;
+
+
+/* This controls output of inferior debugging.
+ 1 = basic exception handling
+ 2 = task management
+ 3 = thread management
+ 4 = pending_event_handler
+ 6 = most chatty level. */
+
+static int darwin_debug_flag = 0;
+
+static void
+inferior_debug (int level, const char *fmt, ...)
+{
+ va_list ap;
+
+ if (darwin_debug_flag < level)
+ return;
+
+ va_start (ap, fmt);
+ printf_unfiltered (_("[%d inferior]: "), getpid ());
+ vprintf_unfiltered (fmt, ap);
+ va_end (ap);
+}
+
+void
+mach_check_error (kern_return_t ret, const char *file,
+ unsigned int line, const char *func)
+{
+ if (ret == KERN_SUCCESS)
+ return;
+ if (func == NULL)
+ func = _("[UNKNOWN]");
+
+ error (_("error on line %u of \"%s\" in function \"%s\": %s (0x%lx)\n"),
+ line, file, func, mach_error_string (ret), (unsigned long) ret);
+}
+
+static const char *
+unparse_exception_type (unsigned int i)
+{
+ static char unknown_exception_buf[32];
+
+ switch (i)
+ {
+ case EXC_BAD_ACCESS:
+ return "EXC_BAD_ACCESS";
+ case EXC_BAD_INSTRUCTION:
+ return "EXC_BAD_INSTRUCTION";
+ case EXC_ARITHMETIC:
+ return "EXC_ARITHMETIC";
+ case EXC_EMULATION:
+ return "EXC_EMULATION";
+ case EXC_SOFTWARE:
+ return "EXC_SOFTWARE";
+ case EXC_BREAKPOINT:
+ return "EXC_BREAKPOINT";
+ case EXC_SYSCALL:
+ return "EXC_SYSCALL";
+ case EXC_MACH_SYSCALL:
+ return "EXC_MACH_SYSCALL";
+ case EXC_RPC_ALERT:
+ return "EXC_RPC_ALERT";
+ case EXC_CRASH:
+ return "EXC_CRASH";
+ default:
+ snprintf (unknown_exception_buf, 32, _("unknown (%d)"), i);
+ return unknown_exception_buf;
+ }
+}
+
+static int
+darwin_ptrace (const char *name,
+ int request, int pid, PTRACE_TYPE_ARG3 arg3, int arg4)
+{
+ int ret;
+
+ ret = ptrace (request, pid, (caddr_t) arg3, arg4);
+
+ inferior_debug (2, _("ptrace (%s, %d, 0x%x, %d): %d (%s)\n"),
+ name, pid, arg3, arg4, ret,
+ (ret != 0) ? strerror (errno) : _("no error"));
+ return ret;
+}
+
+static int
+cmp_thread_t (const void *l, const void *r)
+{
+ thread_t lt = *(const thread_t *)l;
+ thread_t lr = *(const thread_t *)r;
+ return (int)(lr - lt);
+}
+
+static void
+darwin_check_new_threads (darwin_inferior *inf)
+{
+ kern_return_t kret;
+ unsigned int i;
+ thread_array_t thread_list;
+ unsigned int new_nbr;
+ unsigned int old_nbr;
+ unsigned int new_ix, old_ix;
+ VEC (thread_t) *thread_vec;
+
+ /* Get list of threads. */
+ kret = task_threads (inf->task, &thread_list, &new_nbr);
+ MACH_CHECK_ERROR (kret);
+ if (kret != KERN_SUCCESS)
+ return;
+
+ if (new_nbr > 1)
+ qsort (thread_list, new_nbr, sizeof (thread_t), cmp_thread_t);
+
+ thread_vec = VEC_alloc (thread_t, new_nbr);
+
+ if (inf->threads)
+ old_nbr = VEC_length (thread_t, inf->threads);
+ else
+ old_nbr = 0;
+
+ for (new_ix = 0, old_ix = 0; new_ix < new_nbr || old_ix < old_nbr;)
+ {
+ thread_t new_id = (new_ix < new_nbr) ?
+ thread_list[new_ix] : THREAD_NULL;
+ thread_t old_id = (old_ix < old_nbr) ?
+ VEC_index (thread_t, inf->threads, old_ix) : THREAD_NULL;
+
+ if (old_id == new_id)
+ {
+ /* Thread still exist. */
+ VEC_safe_push (thread_t, thread_vec, old_id);
+ new_ix++;
+ old_ix++;
+
+ kret = mach_port_deallocate (gdb_task, old_id);
+ MACH_CHECK_ERROR (kret);
+ continue;
+ }
+ if (new_id < old_id || old_ix == old_nbr)
+ {
+ /* A thread was created. */
+ struct thread_info *tp;
+
+ tp = add_thread (ptid_build (inf->pid, 0, new_id));
+ VEC_safe_push (thread_t, thread_vec, new_id);
+ new_ix++;
+ continue;
+ }
+ if (new_id > old_id || new_ix == new_nbr)
+ {
+ /* A thread was removed. */
+ delete_thread (ptid_build (inf->pid, 0, old_id));
+ kret = mach_port_deallocate (gdb_task, old_id);
+ MACH_CHECK_ERROR (kret);
+ old_ix++;
+ }
+ }
+
+ if (inf->threads)
+ VEC_free (thread_t, inf->threads);
+ inf->threads = thread_vec;
+
+ kret = vm_deallocate (gdb_task, (vm_address_t) thread_list,
+ new_nbr * sizeof (int));
+ MACH_CHECK_ERROR (kret);
+}
+
+static void
+darwin_stop (ptid_t t)
+{
+ int ret;
+
+ ret = kill (ptid_get_pid (inferior_ptid), SIGINT);
+}
+
+static void
+darwin_resume (ptid_t ptid, int step, enum target_signal signal)
+{
+ struct target_waitstatus status;
+ int pid;
+ thread_t thread;
+ kern_return_t kret;
+ int res;
+
+ /* minus_one_ptid is RESUME_ALL. */
+ if (ptid_equal (ptid, minus_one_ptid))
+ ptid = inferior_ptid;
+
+ pid = ptid_get_pid (ptid);
+ thread = ptid_get_tid (ptid);
+
+ inferior_debug
+ (2, _("darwin_resume: state=%d, thread=0x%x, step=%d signal=%d\n"),
+ msg_state, thread, step, signal);
+
+ switch (msg_state)
+ {
+ case GOT_MESSAGE:
+ switch (exc_msg.ex_type)
+ {
+ case EXC_SOFTWARE:
+ if (exc_msg.ex_data[0] == EXC_SOFT_SIGNAL)
+ {
+ int nsignal = target_signal_to_host (signal);
+ res = PTRACE (PT_THUPDATE, pid,
+ (void *)exc_msg.thread_port, nsignal);
+ if (res < 0)
+ printf_unfiltered (_("ptrace THUP: res=%d\n"), res);
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ if (thread != 0)
+ {
+ inferior_debug (2, _("darwin_set_sstep (thread=%x, enable=%d)\n"),
+ thread, step);
+ darwin_set_sstep (thread, step);
+ }
+
+ kret = mach_msg (&msgout.hdr, MACH_SEND_MSG | MACH_SEND_INTERRUPT,
+ msgout.hdr.msgh_size, 0,
+ MACH_PORT_NULL, MACH_MSG_TIMEOUT_NONE,
+ MACH_PORT_NULL);
+ if (kret != 0)
+ printf_unfiltered (_("mach_msg (reply) ret=%d\n"), kret);
+
+ msg_state = REPLY_SENT;
+ break;
+
+ case NO_MESSAGE:
+ if (step)
+ res = PTRACE (PT_STEP, pid, (caddr_t)1, 0);
+ else
+ res = PTRACE (PT_CONTINUE, pid, (caddr_t)1, 0);
+ break;
+
+ default:
+ gdb_assert (0);
+ }
+}
+
+kern_return_t
+catch_exception_raise_state
+ (mach_port_t port,
+ exception_type_t exception_type, mach_exception_data_t exception_data,
+ mach_msg_type_number_t data_count, thread_state_flavor_t * state_flavor,
+ thread_state_t in_state, mach_msg_type_number_t in_state_count,
+ thread_state_t out_state, mach_msg_type_number_t out_state_count)
+{
+ return KERN_FAILURE;
+}
+
+kern_return_t
+catch_exception_raise_state_identity
+ (mach_port_t port, mach_port_t thread_port, mach_port_t task_port,
+ exception_type_t exception_type, mach_exception_data_t exception_data,
+ mach_msg_type_number_t data_count, thread_state_flavor_t * state_flavor,
+ thread_state_t in_state, mach_msg_type_number_t in_state_count,
+ thread_state_t out_state, mach_msg_type_number_t out_state_count)
+{
+ kern_return_t kret;
+
+ kret = mach_port_deallocate (mach_task_self (), task_port);
+ MACH_CHECK_ERROR (kret);
+ kret = mach_port_deallocate (mach_task_self (), thread_port);
+ MACH_CHECK_ERROR (kret);
+
+ return KERN_FAILURE;
+}
+
+kern_return_t
+catch_exception_raise (mach_port_t port,
+ mach_port_t thread_port,
+ mach_port_t task_port,
+ exception_type_t exception_type,
+ exception_data_t exception_data,
+ mach_msg_type_number_t data_count)
+{
+ kern_return_t kret;
+ int i;
+ int res;
+
+ /* We got new rights to the task. Get rid of it. */
+ kret = mach_port_deallocate (mach_task_self (), task_port);
+ MACH_CHECK_ERROR (kret);
+
+ inferior_debug
+ (7, _("catch_exception_raise: exception_type=%d, data_count=%d\n"),
+ exception_type, data_count);
+ if (darwin_debug_flag > 7)
+ {
+ for (i = 0; i < data_count; i++)
+ printf_unfiltered (" %08x", exception_data[i]);
+ printf_unfiltered ("\n");
+ }
+
+ /* Save the message.
+ FIXME: this should be in a per-thread variable. */
+ exc_msg.port = port;
+ exc_msg.thread_port = thread_port;
+ exc_msg.task_port = task_port;
+ exc_msg.ex_type = exception_type;
+ exc_msg.data_count = data_count;
+ for (i = 0; i < data_count && i < 4; i++)
+ exc_msg.ex_data[i] = exception_data[i];
+
+ return KERN_SUCCESS;
+}
+
+static ptid_t
+darwin_wait (ptid_t ptid, struct target_waitstatus *status)
+{
+ kern_return_t kret;
+ mach_msg_header_t *hdr = &msgin.hdr;
+ pid_t pid = ptid_get_pid (inferior_ptid); /* FIXME. */
+
+ gdb_assert (msg_state != GOT_MESSAGE);
+
+ inferior_debug (6, _("darwin_wait: waiting for a message\n"));
+
+ /* Wait for a message. */
+ kret = mach_msg (&msgin.hdr, MACH_RCV_MSG | MACH_RCV_INTERRUPT, 0,
+ sizeof (msgin.data), darwin_port_set, 0, MACH_PORT_NULL);
+
+ if (kret == MACH_RCV_INTERRUPTED)
+ {
+ status->kind = TARGET_WAITKIND_IGNORE;
+ return minus_one_ptid;
+ }
+
+ if (kret != MACH_MSG_SUCCESS)
+ {
+ inferior_debug (1, _("mach_msg: ret=%x\n"), kret);
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return minus_one_ptid;
+ }
+
+ /* Debug: display message. */
+ if (darwin_debug_flag > 10)
+ {
+ const unsigned long *buf = (unsigned long *) hdr;
+ unsigned int i;
+
+ printf_unfiltered (_(" bits: 0x%x"), hdr->msgh_bits);
+ printf_unfiltered (_(", size: 0x%x"), hdr->msgh_size);
+ printf_unfiltered (_(", remote-port: 0x%x"), hdr->msgh_remote_port);
+ printf_unfiltered (_(", local-port: 0x%x"), hdr->msgh_local_port);
+ printf_unfiltered (_(", reserved: 0x%x"), hdr->msgh_reserved);
+ printf_unfiltered (_(", id: 0x%x\n"), hdr->msgh_id);
+
+ if (darwin_debug_flag > 11)
+ {
+ printf_unfiltered (_(" data:"));
+ for (i = 0; i < hdr->msgh_size; i++)
+ printf_unfiltered (" %08lx", buf[i]);
+ printf_unfiltered (_("\n"));
+ }
+ }
+
+ /* Exception message. */
+ if (hdr->msgh_local_port == darwin_ex_port)
+ {
+ /* Handle it via the exception server. */
+ if (!exc_server (&msgin.hdr, &msgout.hdr))
+ {
+ printf_unfiltered (_("exc_server: unknown message (id=%x)\n"),
+ hdr->msgh_id);
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return minus_one_ptid;
+ }
+
+ status->kind = TARGET_WAITKIND_STOPPED;
+
+ inferior_debug (2, _("darwin_wait: thread=%x, got %s\n"),
+ exc_msg.thread_port,
+ unparse_exception_type (exc_msg.ex_type));
+
+ switch (exc_msg.ex_type)
+ {
+ case EXC_BAD_ACCESS:
+ status->value.sig = TARGET_EXC_BAD_ACCESS;
+ break;
+ case EXC_BAD_INSTRUCTION:
+ status->value.sig = TARGET_EXC_BAD_INSTRUCTION;
+ break;
+ case EXC_ARITHMETIC:
+ status->value.sig = TARGET_EXC_ARITHMETIC;
+ break;
+ case EXC_EMULATION:
+ status->value.sig = TARGET_EXC_EMULATION;
+ break;
+ case EXC_SOFTWARE:
+ if (exc_msg.ex_data[0] == EXC_SOFT_SIGNAL)
+ {
+ status->value.sig = target_signal_from_host (exc_msg.ex_data[1]);
+ inferior_debug (2, _(" (signal %d: %s)\n"),
+ exc_msg.ex_data[1],
+ target_signal_to_name (status->value.sig));
+ }
+ else
+ status->value.sig = TARGET_EXC_SOFTWARE;
+ break;
+ case EXC_BREAKPOINT:
+ /* Many internal GDB routines expect breakpoints to be reported
+ as TARGET_SIGNAL_TRAP, and will report TARGET_EXC_BREAKPOINT
+ as a spurious signal. */
+ status->value.sig = TARGET_SIGNAL_TRAP;
+ break;
+ default:
+ status->value.sig = TARGET_SIGNAL_UNKNOWN;
+ break;
+ }
+
+ msg_state = GOT_MESSAGE;
+
+ return ptid_build (pid, 0, exc_msg.thread_port);
+ }
+ else if (hdr->msgh_local_port == darwin_not_port)
+ {
+ pid_t res;
+ int wstatus;
+
+ /* FIXME: translate task port to pid. */
+ res = wait4 (pid, &wstatus, 0, NULL);
+ if (res != pid)
+ {
+ printf_unfiltered (_("wait4: res=%x\n"), res);
+ wstatus = 0;
+ }
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = WEXITSTATUS (wstatus);
+
+ inferior_debug (2, _("darwin_wait: pid=%d exit, status=%x\n"),
+ pid, wstatus);
+
+ msg_state = NO_MESSAGE;
+
+ return ptid;
+ }
+ else
+ {
+ printf_unfiltered (_("Bad local-port: %x\n"), hdr->msgh_local_port);
+ status->kind = TARGET_WAITKIND_SPURIOUS;
+ return minus_one_ptid;
+ }
+}
+
+static void
+darwin_mourn_inferior (struct target_ops *ops)
+{
+ struct inferior *inf = current_inferior ();
+ kern_return_t kret;
+ mach_port_t prev;
+ int i;
+
+ unpush_target (darwin_ops);
+
+ /* Deallocate threads. */
+ if (darwin_inf->threads)
+ {
+ int k;
+ thread_t t;
+ for (k = 0; VEC_iterate (thread_t, darwin_inf->threads, k, t); k++)
+ {
+ kret = mach_port_deallocate (gdb_task, t);
+ MACH_CHECK_ERROR (kret);
+ }
+ VEC_free (thread_t, darwin_inf->threads);
+ darwin_inf->threads = NULL;
+ }
+
+ kret = mach_port_request_notification (gdb_task, darwin_inf->task,
+ MACH_NOTIFY_DEAD_NAME, 0,
+ darwin_inf->prev_not_port,
+ MACH_MSG_TYPE_MAKE_SEND_ONCE,
+ &prev);
+ /* This can fail if the task is dead. */
+ if (kret == KERN_SUCCESS)
+ {
+ kret = mach_port_deallocate (gdb_task, prev);
+ MACH_CHECK_ERROR (kret);
+ }
+
+ /* Deallocate saved exception ports. */
+ for (i = 0; i < darwin_inf->exception_info.count; i++)
+ {
+ kret = mach_port_deallocate
+ (gdb_task, darwin_inf->exception_info.ports[i]);
+ MACH_CHECK_ERROR (kret);
+ }
+ darwin_inf->exception_info.count = 0;
+
+ kret = mach_port_deallocate (gdb_task, darwin_inf->task);
+ MACH_CHECK_ERROR (kret);
+
+ darwin_inf->task = 0;
+ darwin_inf->pid = 0;
+
+ generic_mourn_inferior ();
+}
+
+static void
+darwin_stop_inferior (darwin_inferior *inf)
+{
+ struct target_waitstatus wstatus;
+ ptid_t ptid;
+ kern_return_t kret;
+ int status;
+ int res;
+
+ gdb_assert (inf != NULL);
+
+ kret = task_suspend (inf->task);
+ MACH_CHECK_ERROR (kret);
+
+ if (msg_state == GOT_MESSAGE)
+ darwin_resume (inferior_ptid, 0, 0);
+
+ res = kill (inf->pid, SIGSTOP);
+ if (res != 0)
+ warning (_("cannot kill: %s\n"), strerror (errno));
+
+ ptid = darwin_wait (inferior_ptid, &wstatus);
+ gdb_assert (wstatus.kind = TARGET_WAITKIND_STOPPED);
+}
+
+static void
+darwin_kill_inferior (void)
+{
+ struct target_waitstatus wstatus;
+ ptid_t ptid;
+ kern_return_t kret;
+ int status;
+ int res;
+
+ gdb_assert (darwin_inf != NULL);
+
+ if (ptid_equal (inferior_ptid, null_ptid))
+ return;
+
+ darwin_stop_inferior (darwin_inf);
+
+ res = PTRACE (PT_KILL, darwin_inf->pid, 0, 0);
+ gdb_assert (res == 0);
+
+ if (msg_state == GOT_MESSAGE)
+ {
+ exc_msg.ex_type = 0;
+ darwin_resume (inferior_ptid, 0, 0);
+ }
+
+ kret = task_resume (darwin_inf->task);
+ MACH_CHECK_ERROR (kret);
+
+ ptid = darwin_wait (inferior_ptid, &wstatus);
+
+ /* This double wait seems required... */
+ res = waitpid (darwin_inf->pid, &status, 0);
+ gdb_assert (res == darwin_inf->pid);
+
+ msg_state = NO_MESSAGE;
+
+ target_mourn_inferior ();
+}
+
+/* The child must synchronize with gdb: gdb must set the exception port
+ before the child call PTRACE_SIGEXC. We use a pipe to achieve this.
+ FIXME: is there a lighter way ? */
+static int ptrace_fds[2];
+
+static void
+darwin_ptrace_me (void)
+{
+ int res;
+ char c;
+
+ /* Close write end point. */
+ close (ptrace_fds[1]);
+
+ /* Wait until gdb is ready. */
+ res = read (ptrace_fds[0], &c, 1);
+ gdb_assert (res == 0);
+ close (ptrace_fds[0]);
+
+ /* Get rid of privileges. */
+ setegid (getgid ());
+
+ /* Set TRACEME. */
+ PTRACE (PT_TRACE_ME, 0, 0, 0);
+
+ /* Redirect signals to exception port. */
+ PTRACE (PT_SIGEXC, 0, 0, 0);
+}
+
+/* Dummy function to be sure fork_inferior uses fork(2) and not vfork(2). */
+static void
+darwin_pre_ptrace (void)
+{
+ if (pipe (ptrace_fds) != 0)
+ {
+ ptrace_fds[0] = -1;
+ ptrace_fds[1] = -1;
+ error (_("unable to create a pipe: %s"), safe_strerror (errno));
+ }
+}
+
+static kern_return_t
+darwin_save_exception_ports (darwin_inferior *inf)
+{
+ kern_return_t kret;
+
+ inf->exception_info.count =
+ sizeof (inf->exception_info.ports) / sizeof (inf->exception_info.ports[0]);
+
+ kret = task_get_exception_ports
+ (inf->task, EXC_MASK_ALL, inf->exception_info.masks,
+ &inf->exception_info.count, inf->exception_info.ports,
+ inf->exception_info.behaviors, inf->exception_info.flavors);
+ return kret;
+}
+
+static kern_return_t
+darwin_restore_exception_ports (darwin_inferior *inf)
+{
+ int i;
+ kern_return_t kret;
+
+ for (i = 0; i < inf->exception_info.count; i++)
+ {
+ kret = task_set_exception_ports
+ (inf->task, inf->exception_info.masks[i], inf->exception_info.ports[i],
+ inf->exception_info.behaviors[i], inf->exception_info.flavors[i]);
+ if (kret != KERN_SUCCESS)
+ return kret;
+ }
+
+ return KERN_SUCCESS;
+}
+
+static void
+darwin_attach_pid (int pid)
+{
+ task_t itask;
+ kern_return_t kret;
+ mach_port_t prev_port;
+ int traps_expected;
+ exception_mask_t mask;
+
+ kret = task_for_pid (gdb_task, pid, &itask);
+ if (kret != KERN_SUCCESS)
+ {
+ int status;
+ struct inferior *inf = current_inferior ();
+
+ if (!inf->attach_flag)
+ {
+ kill (pid, 9);
+ waitpid (pid, &status, 0);
+ }
+
+ error (_("Unable to find Mach task port for process-id %d: %s (0x%lx).\n"
+ " (please check gdb is setgid procmod)"),
+ pid, mach_error_string (kret), (unsigned long) kret);
+ }
+
+ inferior_debug (2, _("inferior task: 0x%08x, pid: %d\n"), itask, pid);
+
+ if (darwin_ex_port == MACH_PORT_NULL)
+ {
+ /* Create a port to get exceptions. */
+ kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE,
+ &darwin_ex_port);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ kret = mach_port_insert_right (gdb_task, darwin_ex_port, darwin_ex_port,
+ MACH_MSG_TYPE_MAKE_SEND);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ /* Create a port set and put ex_port in it. */
+ kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_PORT_SET,
+ &darwin_port_set);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ kret = mach_port_move_member (gdb_task, darwin_ex_port, darwin_port_set);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ /* Create a port to be notified when the child task terminates. */
+ kret = mach_port_allocate (gdb_task, MACH_PORT_RIGHT_RECEIVE,
+ &darwin_not_port);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ kret = mach_port_insert_right (gdb_task, darwin_not_port, darwin_not_port,
+ MACH_MSG_TYPE_MAKE_SEND);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ kret = mach_port_move_member (gdb_task, darwin_not_port, darwin_port_set);
+ gdb_assert (kret == KERN_SUCCESS);
+ }
+
+ kret = mach_port_request_notification (gdb_task, itask,
+ MACH_NOTIFY_DEAD_NAME, 0,
+ darwin_not_port,
+ MACH_MSG_TYPE_MAKE_SEND_ONCE,
+ &darwin_inf->prev_not_port);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ darwin_inf->task = itask;
+ darwin_inf->pid = pid;
+
+ kret = darwin_save_exception_ports (darwin_inf);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ /* Set exception port. */
+ if (enable_mach_exceptions)
+ mask = EXC_MASK_ALL;
+ else
+ mask = EXC_MASK_SOFTWARE;
+ kret = task_set_exception_ports
+ (itask, mask, darwin_ex_port, EXCEPTION_DEFAULT, THREAD_STATE_NONE);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ push_target (darwin_ops);
+}
+
+static void
+darwin_init_thread_list (darwin_inferior *inf)
+{
+ thread_t thread;
+
+ darwin_check_new_threads (inf);
+
+ gdb_assert (inf->threads && VEC_length (thread_t, inf->threads) > 0);
+ thread = VEC_index (thread_t, inf->threads, 0);
+ inferior_ptid = ptid_build (inf->pid, 0, thread);
+}
+
+static void
+darwin_ptrace_him (int pid)
+{
+ task_t itask;
+ kern_return_t kret;
+ mach_port_t prev_port;
+ int traps_expected;
+
+ darwin_attach_pid (pid);
+
+ /* Let's the child run. */
+ close (ptrace_fds[0]);
+ close (ptrace_fds[1]);
+
+ /* fork_inferior automatically add a thread - but it uses a wrong tid. */
+ delete_thread_silent (inferior_ptid);
+ darwin_init_thread_list (darwin_inf);
+
+ startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
+}
+
+static void
+darwin_create_inferior (struct target_ops *ops, char *exec_file,
+ char *allargs, char **env, int from_tty)
+{
+ /* Do the hard work. */
+ fork_inferior (exec_file, allargs, env, darwin_ptrace_me, darwin_ptrace_him,
+ darwin_pre_ptrace, NULL);
+
+ /* Return now in case of error. */
+ if (ptid_equal (inferior_ptid, null_ptid))
+ return;
+}
+\f
+
+/* Attach to process PID, then initialize for debugging it
+ and wait for the trace-trap that results from attaching. */
+static void
+darwin_attach (struct target_ops *ops, char *args, int from_tty)
+{
+ pid_t pid;
+ pid_t pid2;
+ int wstatus;
+ int res;
+ struct inferior *inf;
+
+ gdb_assert (msg_state == NO_MESSAGE);
+
+ 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)
+ printf_unfiltered (_("Attaching to pid %d\n"), pid);
+
+ res = PTRACE (PT_ATTACHEXC, pid, 0, 0);
+ if (res != 0)
+ error (_("Unable to attach to process-id %d: %s (%d)"),
+ pid, strerror (errno), errno);
+
+ inf = add_inferior (pid);
+ inf->attach_flag = 1;
+
+ darwin_attach_pid (pid);
+
+ pid2 = wait4 (pid, &wstatus, WUNTRACED, NULL);
+ gdb_assert (pid2 == pid);
+ inferior_debug (1, _("darwin_attach: wait4 pid=%d, status=0x%x\n"),
+ pid2, wstatus);
+
+
+ darwin_init_thread_list (darwin_inf);
+
+ darwin_check_osabi (darwin_inf, ptid_get_tid (inferior_ptid));
+
+ /* Looks strange, but the kernel doesn't stop the process...
+ (Bug in Leopard ?)
+ Do it manually. */
+ /* FIXME: doesn't look to work with multi-threads!! */
+ kill (pid, SIGSTOP);
+}
+
+/* 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
+darwin_detach (struct target_ops *ops, char *args, int from_tty)
+{
+ kern_return_t kret;
+ int res;
+
+ if (from_tty)
+ {
+ char *exec_file = get_exec_file (0);
+ if (exec_file == 0)
+ exec_file = "";
+ printf_unfiltered (_("Detaching from program: %s, %d\n"), exec_file,
+ ptid_get_pid (inferior_ptid));
+ gdb_flush (gdb_stdout);
+ }
+
+ darwin_stop_inferior (darwin_inf);
+
+ kret = darwin_restore_exception_ports (darwin_inf);
+ MACH_CHECK_ERROR (kret);
+
+ if (msg_state == GOT_MESSAGE)
+ {
+ exc_msg.ex_type = 0;
+ darwin_resume (inferior_ptid, 0, 0);
+ }
+
+ kret = task_resume (darwin_inf->task);
+ gdb_assert (kret == KERN_SUCCESS);
+
+ res = PTRACE (PT_DETACH, darwin_inf->pid, 0, 0);
+ if (res != 0)
+ printf_unfiltered (_("Unable to detach from process-id %d: %s (%d)"),
+ darwin_inf->pid, strerror (errno), errno);
+
+ msg_state = NO_MESSAGE;
+
+ darwin_mourn_inferior (ops);
+}
+
+static void
+darwin_files_info (struct target_ops *ops)
+{
+ gdb_assert (darwin_inf != NULL);
+}
+
+static char *
+darwin_pid_to_str (ptid_t ptid)
+{
+ static char buf[128];
+
+ snprintf (buf, sizeof (buf),
+ _("process %d gdb-thread 0x%lx"),
+ (unsigned) ptid_get_pid (ptid),
+ (unsigned long) ptid_get_tid (ptid));
+ return buf;
+}
+
+static int
+darwin_thread_alive (ptid_t ptid)
+{
+ return 1;
+}
+
+/* If RDADDR is not NULL, read inferior task's LEN bytes from ADDR and
+ copy it to RDADDR in gdb's address space.
+ If WRADDR is not NULL, write gdb's LEN bytes from WRADDR and copy it
+ to ADDR in inferior task's address space.
+ Return 0 on failure; number of bytes read / writen otherwise. */
+static int
+darwin_read_write_inferior (task_t task, CORE_ADDR addr,
+ char *rdaddr, const char *wraddr, int length)
+{
+ kern_return_t err;
+ mach_vm_address_t offset = addr & (mach_page_size - 1);
+ mach_vm_address_t low_address = (mach_vm_address_t) (addr - offset);
+ mach_vm_size_t aligned_length = (mach_vm_size_t) PAGE_ROUND (offset + length);
+ pointer_t copied;
+ int copy_count;
+ mach_vm_size_t remaining_length;
+ mach_vm_address_t region_address;
+ mach_vm_size_t region_length;
+
+ inferior_debug (8, _("darwin_read_write_inferior(%s, len=%d)\n"),
+ core_addr_to_string (addr), length);
+
+ /* Get memory from inferior with page aligned addresses */
+ err = mach_vm_read (task, low_address, aligned_length,
+ &copied, ©_count);
+ if (err != KERN_SUCCESS)
+ {
+ warning (_("darwin_read_write_inferior: vm_read failed: %s"),
+ mach_error_string (err));
+ return 0;
+ }
+
+ if (rdaddr != NULL)
+ memcpy (rdaddr, (char *)copied + offset, length);
+
+ if (wraddr == NULL)
+ goto out;
+
+ memcpy ((char *)copied + offset, wraddr, length);
+
+ /* Do writes atomically.
+ First check for holes and unwritable memory. */
+ for (region_address = low_address, remaining_length = aligned_length;
+ region_address < low_address + aligned_length;
+ region_address += region_length, remaining_length -= region_length)
+ {
+ vm_region_basic_info_data_64_t info;
+ mach_port_t object_name;
+ mach_vm_address_t old_address = region_address;
+ mach_msg_type_number_t count;
+
+ region_length = remaining_length;
+ count = VM_REGION_BASIC_INFO_COUNT_64;
+ err = mach_vm_region (task, ®ion_address, ®ion_length,
+ VM_REGION_BASIC_INFO_64,
+ (vm_region_info_t) &info, &count, &object_name);
+
+ if (err != KERN_SUCCESS)
+ {
+ warning (_("darwin_write_inferior: mach_vm_region failed: %s"),
+ mach_error_string (err));
+ goto out;
+ }
+
+ /* Check for holes in memory */
+ if (region_address > old_address)
+ {
+ warning (_("No memory at %s (vs %s+0x%x). Nothing written"),
+ core_addr_to_string (old_address),
+ core_addr_to_string (region_address),
+ (unsigned)region_length);
+ length = 0;
+ goto out;
+ }
+
+ if (!(info.max_protection & VM_PROT_WRITE))
+ {
+ warning (_("Memory at address %s is unwritable. Nothing written"),
+ core_addr_to_string (old_address));
+ length = 0;
+ goto out;
+ }
+
+ if (!(info.protection & VM_PROT_WRITE))
+ {
+ err = mach_vm_protect (task, old_address, region_length,
+ FALSE, info.protection | VM_PROT_WRITE);
+ if (err != KERN_SUCCESS)
+ {
+ warning
+ (_("darwin_read_write_inferior: mach_vm_protect failed: %s"),
+ mach_error_string (err));
+ length = 0;
+ goto out;
+ }
+ }
+ }
+
+ err = mach_vm_write (task, low_address, copied, aligned_length);
+
+ if (err != KERN_SUCCESS)
+ {
+ warning (_("darwin_read_write_inferior: mach_vm_write failed: %s"),
+ mach_error_string (err));
+ length = 0;
+ }
+out:
+ mach_vm_deallocate (mach_task_self (), copied, copy_count);
+ return length;
+}
+
+\f
+/* Return 0 on failure, number of bytes handled otherwise. TARGET
+ is ignored. */
+static int
+darwin_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write,
+ struct mem_attrib *attrib, struct target_ops *target)
+{
+ task_t task = darwin_inf->task;
+
+ if (task == MACH_PORT_NULL)
+ return 0;
+
+ inferior_debug (8, _("darwin_xfer_memory(%s, %d, %c)\n"),
+ core_addr_to_string (memaddr), len, write ? 'w' : 'r');
+
+ if (write)
+ return darwin_read_write_inferior (task, memaddr, NULL, myaddr, len);
+ else
+ return darwin_read_write_inferior (task, memaddr, myaddr, NULL, len);
+}
+
+static LONGEST
+darwin_xfer_partial (struct target_ops *ops,
+ enum target_object object, const char *annex,
+ gdb_byte *readbuf, const gdb_byte *writebuf,
+ ULONGEST offset, LONGEST len)
+{
+ inferior_debug (8, _("darwin_xfer_partial(%s, %d, rbuf=%p, wbuf=%p)\n"),
+ core_addr_to_string (offset), (int)len, readbuf, writebuf);
+
+ if (object != TARGET_OBJECT_MEMORY)
+ return -1;
+
+ return darwin_read_write_inferior (darwin_inf->task, offset,
+ readbuf, writebuf, len);
+}
+
+static void
+set_enable_mach_exceptions (char *args, int from_tty,
+ struct cmd_list_element *c)
+{
+ if (darwin_inf && darwin_inf->task != TASK_NULL)
+ {
+ exception_mask_t mask;
+ kern_return_t kret;
+
+ if (enable_mach_exceptions)
+ mask = EXC_MASK_ALL;
+ else
+ {
+ darwin_restore_exception_ports (darwin_inf);
+ mask = EXC_MASK_SOFTWARE;
+ }
+ kret = task_set_exception_ports (darwin_inf->task, mask, darwin_ex_port,
+ EXCEPTION_DEFAULT, THREAD_STATE_NONE);
+ MACH_CHECK_ERROR (kret);
+ }
+}
+
+void
+_initialize_darwin_inferior ()
+{
+ kern_return_t kret;
+
+ gdb_assert (darwin_inf == NULL);
+
+ gdb_task = mach_task_self ();
+ darwin_host_self = mach_host_self ();
+
+ /* Read page size. */
+ kret = host_page_size (darwin_host_self, &mach_page_size);
+ if (kret != KERN_SUCCESS)
+ {
+ mach_page_size = 0x1000;
+ MACH_CHECK_ERROR (kret);
+ }
+
+ darwin_inf = (struct darwin_inferior *)
+ xmalloc (sizeof (struct darwin_inferior));
+
+ memset (darwin_inf, 0, sizeof (*darwin_inf));
+
+ darwin_ops = inf_child_target ();
+
+ darwin_ops->to_shortname = "darwin-child";
+ darwin_ops->to_longname = _("Darwin child process");
+ darwin_ops->to_doc =
+ _("Darwin child process (started by the \"run\" command).");
+ darwin_ops->to_create_inferior = darwin_create_inferior;
+ darwin_ops->to_attach = darwin_attach;
+ darwin_ops->to_attach_no_wait = 0;
+ darwin_ops->to_detach = darwin_detach;
+ darwin_ops->to_files_info = darwin_files_info;
+ darwin_ops->to_wait = darwin_wait;
+ darwin_ops->to_mourn_inferior = darwin_mourn_inferior;
+ darwin_ops->to_kill = darwin_kill_inferior;
+ darwin_ops->to_stop = darwin_stop;
+ darwin_ops->to_resume = darwin_resume;
+ darwin_ops->to_thread_alive = darwin_thread_alive;
+ darwin_ops->to_pid_to_str = darwin_pid_to_str;
+ darwin_ops->to_load = NULL;
+ darwin_ops->deprecated_xfer_memory = darwin_xfer_memory;
+ darwin_ops->to_xfer_partial = darwin_xfer_partial;
+ darwin_ops->to_has_thread_control = tc_schedlock /*| tc_switch */;
+
+ darwin_complete_target (darwin_ops);
+
+ add_target (darwin_ops);
+
+ inferior_debug (2, _("GDB task: 0x%lx, pid: %d\n"), mach_task_self (),
+ getpid ());
+
+ add_setshow_zinteger_cmd ("darwin", class_obscure,
+ &darwin_debug_flag, _("\
+Set if printing inferior communication debugging statements."), _("\
+Show if printing inferior communication debugging statements."), NULL,
+ NULL, NULL,
+ &setdebuglist, &showdebuglist);
+
+ add_setshow_boolean_cmd ("mach-exceptions", class_support,
+ &enable_mach_exceptions, _("\
+Set if mach exceptions are caught."), _("\
+Show if mach exceptions are caught."), _("\
+When this mode is on, all low level exceptions are reported before being\n\
+reported by the kernel."),
+ &set_enable_mach_exceptions, NULL,
+ &setlist, &showlist);
+}
--- /dev/null
+/* Common things used by the various darwin files
+ Copyright (C) 1995, 1996, 1997, 1999, 2000, 2007, 2008
+ Free Software Foundation, Inc.
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __DARWIN_NAT_H__
+#define __DARWIN_NAT_H__
+
+#include <mach/mach.h>
+#include "gdb_assert.h"
+
+/* Define the threads vector type. */
+DEF_VEC_I (thread_t);
+
+/* Describe the mach exception handling state for a task. This state is saved
+ before being changed and restored when a process is detached.
+ For more information on these fields see task_get_exception_ports manual
+ page. */
+struct darwin_exception_info
+{
+ /* Exceptions handled by the port. */
+ exception_mask_t masks[EXC_TYPES_COUNT];
+
+ /* Ports receiving exception messages. */
+ mach_port_t ports[EXC_TYPES_COUNT];
+
+ /* Type of messages sent. */
+ exception_behavior_t behaviors[EXC_TYPES_COUNT];
+
+ /* Type of state to be sent. */
+ thread_state_flavor_t flavors[EXC_TYPES_COUNT];
+
+ /* Number of elements set. */
+ mach_msg_type_number_t count;
+};
+typedef struct darwin_exception_info darwin_exception_info;
+
+/* Describe an inferior. */
+struct darwin_inferior
+{
+ /* Inferior PID. */
+ int pid;
+
+ /* Corresponding task port. */
+ task_t task;
+
+ /* Previous port for request notification on task. */
+ mach_port_t prev_not_port;
+
+ /* Initial exception handling. */
+ darwin_exception_info exception_info;
+
+ /* Sorted vector of known threads. */
+ VEC(thread_t) *threads;
+};
+typedef struct darwin_inferior darwin_inferior;
+
+/* Current inferior. */
+extern darwin_inferior *darwin_inf;
+
+/* Exception port. */
+extern mach_port_t darwin_ex_port;
+
+/* Notification port. */
+extern mach_port_t darwin_not_port;
+
+/* Port set. */
+extern mach_port_t darwin_port_set;
+
+/* A copy of mach_host_self (). */
+extern mach_port_t darwin_host_self;
+
+/* ASSERT_FUNCTION is defined in gdb_assert.h (or not). */
+#ifdef ASSERT_FUNCTION
+#define MACH_CHECK_ERROR(ret) \
+ mach_check_error (ret, __FILE__, __LINE__, ASSERT_FUNCTION)
+#else
+#define MACH_CHECK_ERROR(ret) \
+ mach_check_error (ret, __FILE__, __LINE__, "??")
+#endif
+
+extern void mach_check_error (kern_return_t ret, const char *file,
+ unsigned int line, const char *func);
+
+void darwin_set_sstep (thread_t thread, int enable);
+
+/* This one is called in darwin-nat.c, but needs to be provided by the
+ platform specific nat code. It allows each platform to add platform specific
+ stuff to the darwin_ops. */
+extern void darwin_complete_target (struct target_ops *target);
+
+void darwin_check_osabi (darwin_inferior *inf, thread_t thread);
+
+#endif /* __DARWIN_NAT_H__ */
--- /dev/null
+#include "config.h"
+#ifdef HAVE_64_BIT_MACH_EXCEPTIONS
+#import <mach/mach_exc.defs>
+#else
+#import <mach/exc.defs>
+#endif
GDB_OSABI_CYGWIN,
GDB_OSABI_AIX,
GDB_OSABI_DICOS,
+ GDB_OSABI_DARWIN,
GDB_OSABI_INVALID /* keep this last */
};
+2008-11-27 Tristan Gingold <gingold@adacore.com>
+
+ * gdb.texinfo (Darwin): Document Darwin specific features.
+
2008-11-25 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdbint.texinfo (Target Conditionals): Extend the
* Cygwin Native:: Features specific to the Cygwin port
* Hurd Native:: Features specific to @sc{gnu} Hurd
* Neutrino:: Features specific to QNX Neutrino
+* Darwin:: Features specific to Darwin
@end menu
@node HP-UX
Show the current state of QNX Neutrino messages.
@end table
+@node Darwin
+@subsection Darwin
+@cindex Darwin
+
+@value{GDBN} provides the following commands specific to the Darwin target:
+
+@table @code
+@item set debug darwin @var{num}
+@kindex set debug darwin
+When set to a non zero value, enables debugging messages specific to
+the Darwin support. Higher values produce more verbose output.
+
+@item show debug darwin
+@kindex show debug darwin
+Show the current state of Darwin messages.
+
+@item set debug mach-o @var{num}
+@kindex set debug mach-o
+When set to a non zero value, enables debugging messages while
+@value{GDBN} is reading Darwin object files. (@dfn{Mach-O} is the
+file format used on Darwin for object and executable files.) Higher
+values produce more verbose output. This is a command to diagnose
+problems internal to @value{GDBN} and should not be needed in normal
+usage.
+
+@item show debug mach-o
+@kindex show debug mach-o
+Show the current state of Mach-O file messages.
+
+@item set mach-exceptions on
+@itemx set mach-exceptions off
+@kindex set mach-exceptions
+On Darwin, faults are first reported as a Mach exception and are then
+mapped to a Posix signal. Use this command to turn on trapping of
+Mach exceptions in the inferior. This might be sometimes useful to
+better understand the cause of a fault. The default is off.
+
+@item show mach-exceptions
+@kindex show mach-exceptions
+Show the current state of exceptions trapping.
+@end table
+
@node Embedded OS
@section Embedded Operating Systems
--- /dev/null
+/* Darwin support for GDB, the GNU debugger.
+ Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2008
+ Free Software Foundation, Inc.
+
+ Contributed by Apple Computer, 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 3 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, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+#include "frame.h"
+#include "inferior.h"
+#include "target.h"
+#include "symfile.h"
+#include "symtab.h"
+#include "objfiles.h"
+#include "gdbcmd.h"
+#include "regcache.h"
+#include "gdb_assert.h"
+#include "i386-tdep.h"
+#include "amd64-nat.h"
+#include "i387-tdep.h"
+#include "gdbarch.h"
+#include "arch-utils.h"
+
+#include "darwin-nat.h"
+#include "i386-darwin-tdep.h"
+
+/* Read register values from the inferior process.
+ If REGNO is -1, do this for all registers.
+ Otherwise, REGNO specifies which register (so we can save time). */
+static void
+i386_darwin_fetch_inferior_registers (struct regcache *regcache, int regno)
+{
+ thread_t current_thread = ptid_get_tid (inferior_ptid);
+ int fetched = 0;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+
+ if (gdbarch_ptr_bit (gdbarch) == 64)
+ {
+ if (regno == -1 || amd64_native_gregset_supplies_p (gdbarch, regno))
+ {
+ x86_thread_state_t gp_regs;
+ unsigned int gp_count = x86_THREAD_STATE_COUNT;
+ kern_return_t ret;
+
+ ret = thread_get_state
+ (current_thread, x86_THREAD_STATE, (thread_state_t) & gp_regs,
+ &gp_count);
+ if (ret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("Error calling thread_get_state for GP registers for thread 0x%ulx"), current_thread);
+ MACH_CHECK_ERROR (ret);
+ }
+ amd64_supply_native_gregset (regcache, &gp_regs.uts, -1);
+ fetched++;
+ }
+
+ if (regno == -1 || !amd64_native_gregset_supplies_p (gdbarch, regno))
+ {
+ x86_float_state_t fp_regs;
+ unsigned int fp_count = x86_FLOAT_STATE_COUNT;
+ kern_return_t ret;
+
+ ret = thread_get_state
+ (current_thread, x86_FLOAT_STATE, (thread_state_t) & fp_regs,
+ &fp_count);
+ if (ret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("Error calling thread_get_state for float registers for thread 0x%ulx"), current_thread);
+ MACH_CHECK_ERROR (ret);
+ }
+ i387_supply_fxsave (regcache, -1, &fp_regs.ufs.fs64);
+ fetched++;
+ }
+ }
+ else
+ {
+ if (regno == -1 || regno < I386_NUM_GREGS)
+ {
+ i386_thread_state_t gp_regs;
+ unsigned int gp_count = i386_THREAD_STATE_COUNT;
+ kern_return_t ret;
+ int i;
+
+ ret = thread_get_state
+ (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs,
+ &gp_count);
+ if (ret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("Error calling thread_get_state for GP registers for thread 0x%ulx"), current_thread);
+ MACH_CHECK_ERROR (ret);
+ }
+ for (i = 0; i < I386_NUM_GREGS; i++)
+ regcache_raw_supply
+ (regcache, i,
+ (char *)&gp_regs + i386_darwin_thread_state_reg_offset[i]);
+
+ fetched++;
+ }
+
+ if (regno == -1
+ || (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS))
+ {
+ i386_float_state_t fp_regs;
+ unsigned int fp_count = i386_FLOAT_STATE_COUNT;
+ kern_return_t ret;
+
+ ret = thread_get_state
+ (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs,
+ &fp_count);
+ if (ret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("Error calling thread_get_state for float registers for thread 0x%ulx"), current_thread);
+ MACH_CHECK_ERROR (ret);
+ }
+ i387_supply_fxsave (regcache, -1, &fp_regs.__fpu_fcw);
+ fetched++;
+ }
+ }
+
+ if (! fetched)
+ {
+ warning (_("unknown register %d"), regno);
+ regcache_raw_supply (regcache, regno, NULL);
+ }
+}
+
+/* Store our register values back into the inferior.
+ If REGNO is -1, do this for all registers.
+ Otherwise, REGNO specifies which register (so we can save time). */
+
+static void
+i386_darwin_store_inferior_registers (struct regcache *regcache, int regno)
+{
+ thread_t current_thread = ptid_get_tid (inferior_ptid);
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+
+ if (gdbarch_ptr_bit (gdbarch) == 64)
+ {
+ if (regno == -1 || amd64_native_gregset_supplies_p (gdbarch, regno))
+ {
+ x86_thread_state_t gp_regs;
+ kern_return_t ret;
+ unsigned int gp_count = x86_THREAD_STATE_COUNT;
+
+ ret = thread_get_state
+ (current_thread, x86_THREAD_STATE, (thread_state_t) &gp_regs,
+ &gp_count);
+ MACH_CHECK_ERROR (ret);
+ gdb_assert (gp_regs.tsh.flavor == x86_THREAD_STATE64);
+ gdb_assert (gp_regs.tsh.count == x86_THREAD_STATE64_COUNT);
+
+ amd64_collect_native_gregset (regcache, &gp_regs.uts, regno);
+
+ ret = thread_set_state (current_thread, x86_THREAD_STATE,
+ (thread_state_t) &gp_regs,
+ x86_THREAD_STATE_COUNT);
+ MACH_CHECK_ERROR (ret);
+ }
+
+ if (regno == -1 || !amd64_native_gregset_supplies_p (gdbarch, regno))
+ {
+ x86_float_state_t fp_regs;
+ kern_return_t ret;
+ unsigned int fp_count = x86_FLOAT_STATE_COUNT;
+
+ ret = thread_get_state
+ (current_thread, x86_FLOAT_STATE, (thread_state_t) & fp_regs,
+ &fp_count);
+ MACH_CHECK_ERROR (ret);
+ gdb_assert (fp_regs.fsh.flavor == x86_FLOAT_STATE64);
+ gdb_assert (fp_regs.fsh.count == x86_FLOAT_STATE64_COUNT);
+
+ i387_collect_fxsave (regcache, regno, &fp_regs.ufs.fs64.__fpu_fcw);
+
+ ret = thread_set_state (current_thread, x86_FLOAT_STATE,
+ (thread_state_t) & fp_regs,
+ x86_FLOAT_STATE_COUNT);
+ MACH_CHECK_ERROR (ret);
+ }
+ }
+ else
+ {
+ if (regno == -1 || regno < I386_NUM_GREGS)
+ {
+ i386_thread_state_t gp_regs;
+ kern_return_t ret;
+ unsigned int gp_count = i386_THREAD_STATE_COUNT;
+ int i;
+
+ ret = thread_get_state
+ (current_thread, i386_THREAD_STATE, (thread_state_t) & gp_regs,
+ &gp_count);
+ MACH_CHECK_ERROR (ret);
+
+ for (i = 0; i < I386_NUM_GREGS; i++)
+ if (regno == -1 || regno == i)
+ regcache_raw_collect
+ (regcache, i,
+ (char *)&gp_regs + i386_darwin_thread_state_reg_offset[i]);
+
+ ret = thread_set_state (current_thread, i386_THREAD_STATE,
+ (thread_state_t) & gp_regs,
+ i386_THREAD_STATE_COUNT);
+ MACH_CHECK_ERROR (ret);
+ }
+
+ if (regno == -1
+ || (regno >= I386_ST0_REGNUM && regno < I386_SSE_NUM_REGS))
+ {
+ i386_float_state_t fp_regs;
+ unsigned int fp_count = i386_FLOAT_STATE_COUNT;
+ kern_return_t ret;
+
+ ret = thread_get_state
+ (current_thread, i386_FLOAT_STATE, (thread_state_t) & fp_regs,
+ &fp_count);
+ MACH_CHECK_ERROR (ret);
+
+ i387_collect_fxsave (regcache, regno, &fp_regs.__fpu_fcw);
+
+ ret = thread_set_state (current_thread, i386_FLOAT_STATE,
+ (thread_state_t) & fp_regs,
+ i386_FLOAT_STATE_COUNT);
+ MACH_CHECK_ERROR (ret);
+ }
+ }
+}
+
+
+/* Support for debug registers, boosted mostly from i386-linux-nat.c. */
+
+#ifndef DR_FIRSTADDR
+#define DR_FIRSTADDR 0
+#endif
+
+#ifndef DR_LASTADDR
+#define DR_LASTADDR 3
+#endif
+
+#ifndef DR_STATUS
+#define DR_STATUS 6
+#endif
+
+#ifndef DR_CONTROL
+#define DR_CONTROL 7
+#endif
+
+
+static void
+i386_darwin_dr_set (int regnum, uint32_t value)
+{
+ int current_pid;
+ thread_t current_thread;
+ x86_debug_state_t dr_regs;
+ kern_return_t ret;
+ unsigned int dr_count = x86_DEBUG_STATE_COUNT;
+
+ gdb_assert (regnum >= 0 && regnum <= DR_CONTROL);
+
+ current_thread = ptid_get_tid (inferior_ptid);
+
+ dr_regs.dsh.flavor = x86_DEBUG_STATE32;
+ dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT;
+ dr_count = x86_DEBUG_STATE_COUNT;
+ ret = thread_get_state (current_thread, x86_DEBUG_STATE,
+ (thread_state_t) &dr_regs, &dr_count);
+
+ if (ret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("Error reading debug registers thread 0x%x via thread_get_state\n"), (int) current_thread);
+ MACH_CHECK_ERROR (ret);
+ }
+
+ switch (regnum)
+ {
+ case 0:
+ dr_regs.uds.ds32.__dr0 = value;
+ break;
+ case 1:
+ dr_regs.uds.ds32.__dr1 = value;
+ break;
+ case 2:
+ dr_regs.uds.ds32.__dr2 = value;
+ break;
+ case 3:
+ dr_regs.uds.ds32.__dr3 = value;
+ break;
+ case 4:
+ dr_regs.uds.ds32.__dr4 = value;
+ break;
+ case 5:
+ dr_regs.uds.ds32.__dr5 = value;
+ break;
+ case 6:
+ dr_regs.uds.ds32.__dr6 = value;
+ break;
+ case 7:
+ dr_regs.uds.ds32.__dr7 = value;
+ break;
+ }
+
+ ret = thread_set_state (current_thread, x86_DEBUG_STATE,
+ (thread_state_t) &dr_regs, dr_count);
+
+ if (ret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("Error writing debug registers thread 0x%x via thread_get_state\n"), (int) current_thread);
+ MACH_CHECK_ERROR (ret);
+ }
+}
+
+static uint32_t
+i386_darwin_dr_get (int regnum)
+{
+ thread_t current_thread;
+ x86_debug_state_t dr_regs;
+ kern_return_t ret;
+ unsigned int dr_count = x86_DEBUG_STATE_COUNT;
+
+ gdb_assert (regnum >= 0 && regnum <= DR_CONTROL);
+
+ current_thread = ptid_get_tid (inferior_ptid);
+
+ dr_regs.dsh.flavor = x86_DEBUG_STATE32;
+ dr_regs.dsh.count = x86_DEBUG_STATE32_COUNT;
+ dr_count = x86_DEBUG_STATE_COUNT;
+ ret = thread_get_state (current_thread, x86_DEBUG_STATE,
+ (thread_state_t) &dr_regs, &dr_count);
+
+ if (ret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("Error reading debug registers thread 0x%x via thread_get_state\n"), (int) current_thread);
+ MACH_CHECK_ERROR (ret);
+ }
+
+ switch (regnum)
+ {
+ case 0:
+ return dr_regs.uds.ds32.__dr0;
+ case 1:
+ return dr_regs.uds.ds32.__dr1;
+ case 2:
+ return dr_regs.uds.ds32.__dr2;
+ case 3:
+ return dr_regs.uds.ds32.__dr3;
+ case 4:
+ return dr_regs.uds.ds32.__dr4;
+ case 5:
+ return dr_regs.uds.ds32.__dr5;
+ case 6:
+ return dr_regs.uds.ds32.__dr6;
+ case 7:
+ return dr_regs.uds.ds32.__dr7;
+ default:
+ return -1;
+ }
+}
+
+void
+i386_darwin_dr_set_control (unsigned long control)
+{
+ i386_darwin_dr_set (DR_CONTROL, control);
+}
+
+void
+i386_darwin_dr_set_addr (int regnum, CORE_ADDR addr)
+{
+ gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR);
+
+ i386_darwin_dr_set (DR_FIRSTADDR + regnum, addr);
+}
+
+void
+i386_darwin_dr_reset_addr (int regnum)
+{
+ gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR);
+
+ i386_darwin_dr_set (DR_FIRSTADDR + regnum, 0L);
+}
+
+unsigned long
+i386_darwin_dr_get_status (void)
+{
+ return i386_darwin_dr_get (DR_STATUS);
+}
+
+void
+darwin_check_osabi (darwin_inferior *inf, thread_t thread)
+{
+ if (gdbarch_osabi (current_gdbarch) == GDB_OSABI_UNKNOWN)
+ {
+ /* Attaching to a process. Let's figure out what kind it is. */
+ x86_thread_state_t gp_regs;
+ struct gdbarch_info info;
+ unsigned int gp_count = x86_THREAD_STATE_COUNT;
+ kern_return_t ret;
+
+ ret = thread_get_state (thread, x86_THREAD_STATE,
+ (thread_state_t) &gp_regs, &gp_count);
+ if (ret != KERN_SUCCESS)
+ {
+ MACH_CHECK_ERROR (ret);
+ return;
+ }
+
+ gdbarch_info_init (&info);
+ gdbarch_info_fill (&info);
+ info.byte_order = gdbarch_byte_order (current_gdbarch);
+ info.osabi = GDB_OSABI_DARWIN;
+ if (gp_regs.tsh.flavor == x86_THREAD_STATE64)
+ info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386,
+ bfd_mach_x86_64);
+ else
+ info.bfd_arch_info = bfd_lookup_arch (bfd_arch_i386,
+ bfd_mach_i386_i386);
+ gdbarch_update_p (info);
+ }
+}
+
+#define X86_EFLAGS_T 0x100UL
+
+void
+darwin_set_sstep (thread_t thread, int enable)
+{
+ x86_thread_state_t regs;
+ unsigned int count = x86_THREAD_STATE_COUNT;
+ kern_return_t kret;
+
+ kret = thread_get_state (thread, x86_THREAD_STATE,
+ (thread_state_t) ®s, &count);
+ if (kret != KERN_SUCCESS)
+ {
+ printf_unfiltered (_("darwin_set_sstep: error %x, thread=%x\n"),
+ kret, thread);
+ return;
+ }
+ switch (regs.tsh.flavor)
+ {
+ case x86_THREAD_STATE32:
+ {
+ __uint32_t bit = enable ? X86_EFLAGS_T : 0;
+
+ if ((regs.uts.ts32.__eflags & X86_EFLAGS_T) == bit)
+ return;
+ regs.uts.ts32.__eflags = (regs.uts.ts32.__eflags & ~X86_EFLAGS_T) | bit;
+ kret = thread_set_state (thread, x86_THREAD_STATE,
+ (thread_state_t) ®s, count);
+ MACH_CHECK_ERROR (kret);
+ }
+ break;
+ case x86_THREAD_STATE64:
+ {
+ __uint64_t bit = enable ? X86_EFLAGS_T : 0;
+
+ if ((regs.uts.ts64.__rflags & X86_EFLAGS_T) == bit)
+ return;
+ regs.uts.ts64.__rflags = (regs.uts.ts64.__rflags & ~X86_EFLAGS_T) | bit;
+ kret = thread_set_state (thread, x86_THREAD_STATE,
+ (thread_state_t) ®s, count);
+ MACH_CHECK_ERROR (kret);
+ }
+ break;
+ default:
+ error (_("darwin_set_sstep: unknown flavour: %d\n"), regs.tsh.flavor);
+ }
+}
+
+void
+darwin_complete_target (struct target_ops *target)
+{
+ amd64_native_gregset64_reg_offset = amd64_darwin_thread_state_reg_offset;
+ amd64_native_gregset64_num_regs = amd64_darwin_thread_state_num_regs;
+ amd64_native_gregset32_reg_offset = i386_darwin_thread_state_reg_offset;
+ amd64_native_gregset32_num_regs = i386_darwin_thread_state_num_regs;
+
+ target->to_fetch_registers = i386_darwin_fetch_inferior_registers;
+ target->to_store_registers = i386_darwin_store_inferior_registers;
+}
--- /dev/null
+/* Darwin support for GDB, the GNU debugger.
+ Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2005, 2008
+ Free Software Foundation, Inc.
+
+ Contributed by Apple Computer, 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 3 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, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+#include "frame.h"
+#include "inferior.h"
+#include "gdbcore.h"
+#include "target.h"
+#include "floatformat.h"
+#include "symtab.h"
+#include "regcache.h"
+#include "libbfd.h"
+#include "objfiles.h"
+
+#include "i387-tdep.h"
+#include "i386-tdep.h"
+#include "amd64-tdep.h"
+#include "osabi.h"
+#include "ui-out.h"
+#include "symtab.h"
+#include "frame.h"
+#include "gdb_assert.h"
+#include "i386-darwin-tdep.h"
+
+/* Offsets into the struct i386_thread_state where we'll find the saved regs.
+ From <mach/i386/thread_status.h> and i386-tdep.h. */
+int i386_darwin_thread_state_reg_offset[] =
+{
+ 0 * 4, /* EAX */
+ 2 * 4, /* ECX */
+ 3 * 4, /* EDX */
+ 1 * 4, /* EBX */
+ 7 * 4, /* ESP */
+ 6 * 4, /* EBP */
+ 5 * 4, /* ESI */
+ 4 * 4, /* EDI */
+ 10 * 4, /* EIP */
+ 9 * 4, /* EFLAGS */
+ 11 * 4, /* CS */
+ 8, /* SS */
+ 12 * 4, /* DS */
+ 13 * 4, /* ES */
+ 14 * 4, /* FS */
+ 15 * 4 /* GS */
+};
+
+const int i386_darwin_thread_state_num_regs =
+ ARRAY_SIZE (i386_darwin_thread_state_reg_offset);
+
+/* Offsets into the struct x86_thread_state64 where we'll find the saved regs.
+ From <mach/i386/thread_status.h> and amd64-tdep.h. */
+int amd64_darwin_thread_state_reg_offset[] =
+{
+ 0 * 8, /* %rax */
+ 1 * 8, /* %rbx */
+ 2 * 8, /* %rcx */
+ 3 * 8, /* %rdx */
+ 5 * 8, /* %rsi */
+ 4 * 8, /* %rdi */
+ 6 * 8, /* %rbp */
+ 7 * 8, /* %rsp */
+ 8 * 8, /* %r8 ... */
+ 9 * 8,
+ 10 * 8,
+ 11 * 8,
+ 12 * 8,
+ 13 * 8,
+ 14 * 8,
+ 15 * 8, /* ... %r15 */
+ 16 * 8, /* %rip */
+ 17 * 8, /* %rflags */
+ 18 * 8, /* %cs */
+ -1, /* %ss */
+ -1, /* %ds */
+ -1, /* %es */
+ 19 * 8, /* %fs */
+ 20 * 8 /* %gs */
+};
+
+const int amd64_darwin_thread_state_num_regs =
+ ARRAY_SIZE (amd64_darwin_thread_state_reg_offset);
+
+static void
+i386_darwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ /* We support the SSE registers. */
+ tdep->num_xmm_regs = I386_NUM_XREGS - 1;
+ set_gdbarch_num_regs (gdbarch, I386_SSE_NUM_REGS);
+
+ tdep->struct_return = reg_struct_return;
+
+ tdep->sigcontext_addr = NULL;
+ tdep->sc_reg_offset = i386_darwin_thread_state_reg_offset;
+ tdep->sc_num_regs = 16;
+
+ tdep->jb_pc_offset = 20;
+}
+
+static void
+x86_darwin_init_abi_64 (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ amd64_init_abi (info, gdbarch);
+
+ tdep->struct_return = reg_struct_return;
+
+ /* We don't do signals yet. */
+ tdep->sigcontext_addr = NULL;
+ tdep->sc_reg_offset = amd64_darwin_thread_state_reg_offset;
+ tdep->sc_num_regs = ARRAY_SIZE (amd64_darwin_thread_state_reg_offset);
+
+ tdep->jb_pc_offset = 148;
+}
+
+static enum gdb_osabi
+i386_mach_o_osabi_sniffer (bfd *abfd)
+{
+ if (!bfd_check_format (abfd, bfd_object))
+ return GDB_OSABI_UNKNOWN;
+
+ if (bfd_get_arch (abfd) == bfd_arch_i386)
+ return GDB_OSABI_DARWIN;
+
+ return GDB_OSABI_UNKNOWN;
+}
+
+void
+_initialize_i386_darwin_tdep (void)
+{
+ gdbarch_register_osabi_sniffer (bfd_arch_unknown, bfd_target_mach_o_flavour,
+ i386_mach_o_osabi_sniffer);
+
+ gdbarch_register_osabi (bfd_arch_i386, bfd_mach_i386_i386,
+ GDB_OSABI_DARWIN, i386_darwin_init_abi);
+
+ gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64,
+ GDB_OSABI_DARWIN, x86_darwin_init_abi_64);
+}
--- /dev/null
+/* Target-dependent code for Darwin x86.
+
+ Copyright (C) 2008 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 3 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, see <http://www.gnu.org/licenses/>. */
+#ifndef __I386_DARWIN_TDEP_H__
+#define __I386_DARWIN_TDEP_H__
+
+/* Mapping between the general-purpose registers in Darwin x86 thread_state
+ struct and GDB's register cache layout. */
+extern int i386_darwin_thread_state_reg_offset[];
+extern const int i386_darwin_thread_state_num_regs;
+
+/* Mapping between the general-purpose registers in Darwin x86-64 thread
+ state and GDB's register cache layout.
+ Indexed by amd64_regnum. */
+extern int amd64_darwin_thread_state_reg_offset[];
+extern const int amd64_darwin_thread_state_num_regs;
+
+#endif /* __I386_DARWIN_TDEP_H__ */
--- /dev/null
+/* Darwin support for GDB, the GNU debugger.
+ Copyright (C) 2008 Free Software Foundation, Inc.
+
+ Contributed by AdaCore.
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+#include "bfd.h"
+#include "symfile.h"
+#include "objfiles.h"
+#include "buildsym.h"
+#include "gdbcmd.h"
+#include "gdbcore.h"
+#include "mach-o.h"
+#include "gdb_assert.h"
+#include "aout/stab_gnu.h"
+#include "vec.h"
+
+#include <string.h>
+
+/* If non-zero displays debugging message. */
+static int mach_o_debug_level = 0;
+
+static void
+macho_new_init (struct objfile *objfile)
+{
+}
+
+static void
+macho_symfile_init (struct objfile *objfile)
+{
+ objfile->flags |= OBJF_REORDERED;
+ init_entry_point_info (objfile);
+}
+
+/* Dwarf debugging information are never in the final executable. They stay
+ in object files and the executable contains the list of object files read
+ during the link.
+ Each time an oso (other source) is found in the executable, the reader
+ creates such a structure. They are read after the processing of the
+ executable.
+*/
+typedef struct oso_el
+{
+ /* Object file name. */
+ const char *name;
+
+ /* Associated time stamp. */
+ unsigned long mtime;
+
+ /* Number of sections. This is the length of SYMBOLS and OFFSETS array. */
+ int num_sections;
+
+ /* Each seaction of the object file is represented by a symbol and its
+ offset. */
+ asymbol **symbols;
+ bfd_vma *offsets;
+}
+oso_el;
+
+/* Vector of object files to be read after the executable. */
+DEF_VEC_O (oso_el);
+static VEC (oso_el) *oso_vector;
+
+/* Add a new OSO to the vector. */
+static void
+macho_add_oso (const asymbol *oso_sym, int nbr_sections,
+ asymbol **symbols, bfd_vma *offsets)
+{
+ oso_el el;
+
+ el.name = oso_sym->name;
+ el.mtime = oso_sym->value;
+ el.num_sections = nbr_sections;
+ el.symbols = symbols;
+ el.offsets = offsets;
+ VEC_safe_push (oso_el, oso_vector, &el);
+}
+
+/* Build the minimal symbol table from SYMBOL_TABLE of length
+ NUMBER_OF_SYMBOLS for OBJFILE.
+ Read OSO files at the end. */
+static void
+macho_symtab_read (struct objfile *objfile,
+ long number_of_symbols, asymbol **symbol_table)
+{
+ struct gdbarch *gdbarch = get_objfile_arch (objfile);
+ long storage_needed;
+ asymbol *sym;
+ long i, j;
+ CORE_ADDR offset;
+ enum minimal_symbol_type ms_type;
+ unsigned int nbr_sections = bfd_count_sections (objfile->obfd);
+ asymbol **first_symbol = NULL;
+ bfd_vma *first_offset = NULL;
+ const asymbol *oso_file = NULL;
+
+ for (i = 0; i < number_of_symbols; i++)
+ {
+ sym = symbol_table[i];
+ offset = ANOFFSET (objfile->section_offsets, sym->section->index);
+
+ if (sym->flags & BSF_DEBUGGING)
+ {
+ unsigned char type = BFD_MACH_O_SYM_NTYPE(sym);
+ bfd_vma addr;
+
+ switch (type)
+ {
+ case N_SO:
+ if ((sym->name == NULL || sym->name[0] == 0)
+ && oso_file != NULL)
+ {
+ macho_add_oso (oso_file, nbr_sections,
+ first_symbol, first_offset);
+ first_symbol = NULL;
+ first_offset = NULL;
+ oso_file = NULL;
+ }
+ break;
+ case N_FUN:
+ case N_STSYM:
+ if (sym->name == NULL || sym->name[0] == '\0')
+ break;
+ /* Fall through. */
+ case N_BNSYM:
+ gdb_assert (oso_file != NULL);
+ addr = sym->value
+ + bfd_get_section_vma (sym->section->bfd, sym->section);
+ if (addr != 0
+ && first_symbol[sym->section->index] == NULL)
+ {
+ first_symbol[sym->section->index] = sym;
+ first_offset[sym->section->index] = addr + offset;
+ }
+ break;
+ case N_GSYM:
+ gdb_assert (oso_file != NULL);
+ if (first_symbol[sym->section->index] == NULL)
+ first_symbol[sym->section->index] = sym;
+ break;
+ case N_OSO:
+ gdb_assert (oso_file == NULL);
+ first_symbol = (asymbol **)xmalloc (nbr_sections
+ * sizeof (asymbol *));
+ first_offset = (bfd_vma *)xmalloc (nbr_sections
+ * sizeof (bfd_vma));
+ for (j = 0; j < nbr_sections; j++)
+ first_symbol[j] = NULL;
+ oso_file = sym;
+ break;
+ }
+ continue;
+ }
+
+ if (sym->name == NULL || *sym->name == '\0')
+ {
+ /* Skip names that don't exist (shouldn't happen), or names
+ that are null strings (may happen). */
+ continue;
+ }
+
+ if (sym->flags & (BSF_GLOBAL | BSF_LOCAL | BSF_WEAK))
+ {
+ struct minimal_symbol *msym;
+ CORE_ADDR symaddr;
+
+ /* Bfd symbols are section relative. */
+ symaddr = sym->value + sym->section->vma;
+
+ /* Select global/local/weak symbols. Note that bfd puts abs
+ symbols in their own section, so all symbols we are
+ interested in will have a section. */
+ /* Relocate all non-absolute and non-TLS symbols by the
+ section offset. */
+ if (sym->section != &bfd_abs_section
+ && !(sym->section->flags & SEC_THREAD_LOCAL))
+ symaddr += offset;
+
+ if (sym->section == &bfd_abs_section)
+ ms_type = mst_abs;
+ else if (sym->section->flags & SEC_CODE)
+ {
+ if (sym->flags & (BSF_GLOBAL | BSF_WEAK))
+ ms_type = mst_text;
+ else
+ ms_type = mst_file_text;
+ }
+ else if (sym->section->flags & SEC_ALLOC)
+ {
+ if (sym->flags & (BSF_GLOBAL | BSF_WEAK))
+ {
+ if (sym->section->flags & SEC_LOAD)
+ ms_type = mst_data;
+ else
+ ms_type = mst_bss;
+ }
+ else if (sym->flags & BSF_LOCAL)
+ {
+ /* Not a special stabs-in-elf symbol, do regular
+ symbol processing. */
+ if (sym->section->flags & SEC_LOAD)
+ ms_type = mst_file_data;
+ else
+ ms_type = mst_file_bss;
+ }
+ else
+ ms_type = mst_unknown;
+ }
+ else
+ continue; /* Skip this symbol. */
+
+ gdb_assert (sym->section->index < nbr_sections);
+ if (oso_file != NULL
+ && first_symbol[sym->section->index] == NULL)
+ {
+ first_symbol[sym->section->index] = sym;
+ first_offset[sym->section->index] = symaddr;
+ }
+
+ msym = prim_record_minimal_symbol_and_info
+ (sym->name, symaddr, ms_type, sym->section->index,
+ sym->section, objfile);
+ }
+ }
+
+ if (oso_file != NULL)
+ macho_add_oso (oso_file, nbr_sections, first_symbol, first_offset);
+}
+
+/* If NAME describes an archive member (ie: ARCHIVE '(' MEMBER ')'),
+ returns the length of the archive name.
+ Returns -1 otherwise. */
+static int
+get_archive_prefix_len (const char *name)
+{
+ char *lparen;
+ int name_len = strlen (name);
+
+ if (name_len == 0 || name[name_len - 1] != ')')
+ return -1;
+
+ lparen = strrchr (name, '(');
+ if (lparen == NULL || lparen == name)
+ return -1;
+ return lparen - name;
+}
+
+/* Read symbols from the vector of oso files. */
+static void
+macho_oso_symfile (struct objfile *main_objfile)
+{
+ int ix;
+ VEC (oso_el) *vec;
+ oso_el *oso;
+ char leading_char;
+
+ /* TODO: Sort them, group library search. */
+
+ vec = oso_vector;
+ oso_vector = NULL;
+
+ leading_char = bfd_get_symbol_leading_char (main_objfile->obfd);
+
+ for (ix = 0; VEC_iterate (oso_el, vec, ix, oso); ix++)
+ {
+ struct section_addr_info *addrs;
+ int pfx_len;
+ int len;
+ int i;
+ oso_el el;
+
+ if (mach_o_debug_level > 0)
+ printf_unfiltered (_("Loading symbols from oso: %s\n"), oso->name);
+
+ /* Compute addr length. */
+ len = 0;
+ for (i = 0; i < oso->num_sections; i++)
+ if (oso->symbols[i] != NULL)
+ len++;
+
+ addrs = alloc_section_addr_info (len);
+
+ len = 0;
+ for (i = 0; i < oso->num_sections; i++)
+ if (oso->symbols[i] != NULL)
+ {
+ if (oso->offsets[i])
+ addrs->other[len].addr = oso->offsets[i];
+ else
+ {
+ struct minimal_symbol *msym;
+ const char *name = oso->symbols[i]->name;
+
+ if (name[0] == leading_char)
+ ++name;
+
+ if (mach_o_debug_level > 3)
+ printf_unfiltered (_("resolv sec %s with %s\n"),
+ oso->symbols[i]->section->name,
+ oso->symbols[i]->name);
+ msym = lookup_minimal_symbol (name, NULL, main_objfile);
+ if (msym == NULL)
+ {
+ warning (_("can't find symbol '%s' in minsymtab"),
+ oso->symbols[i]->name);
+ addrs->other[len].addr = 0;
+ }
+ else
+ addrs->other[len].addr = SYMBOL_VALUE_ADDRESS (msym);
+ }
+ addrs->other[len].name = (char *)oso->symbols[i]->section->name;
+ len++;
+ }
+
+ if (mach_o_debug_level > 1)
+ {
+ int j;
+ for (j = 0; j < addrs->num_sections; j++)
+ printf_unfiltered
+ (_(" %s: %s\n"),
+ core_addr_to_string (addrs->other[j].addr),
+ addrs->other[j].name);
+ }
+
+ /* Check if this is a library name. */
+ pfx_len = get_archive_prefix_len (oso->name);
+ if (pfx_len > 0)
+ {
+ bfd *archive_bfd;
+ bfd *member_bfd;
+ char *archive_name = (char *) alloca (pfx_len + 1);
+ int member_len;
+
+ member_len = strlen (oso->name + pfx_len + 1) - 1;
+ memcpy (archive_name, oso->name, pfx_len);
+ archive_name[pfx_len] = '\0';
+
+ /* Open the archive and check the format. */
+ archive_bfd = bfd_openr (archive_name, gnutarget);
+ if (archive_bfd == NULL)
+ {
+ warning (_("Could not open OSO archive file \"%s\""),
+ archive_name);
+ continue;
+ }
+ if (!bfd_check_format (archive_bfd, bfd_archive))
+ {
+ warning (_("OSO archive file \"%s\" not an archive."),
+ archive_name);
+ bfd_close (archive_bfd);
+ continue;
+ }
+ member_bfd = bfd_openr_next_archived_file (archive_bfd, NULL);
+
+ if (member_bfd == NULL)
+ {
+ warning (_("Could not read archive members out of "
+ "OSO archive \"%s\""), archive_name);
+ bfd_close (archive_bfd);
+ continue;
+ }
+
+ while (member_bfd != NULL)
+ {
+ bfd *prev = member_bfd;
+ const char *member_name = member_bfd->filename;
+ if (strlen (member_name) == member_len
+ && !memcmp (member_name, oso->name + pfx_len + 1, member_len))
+ break;
+ member_bfd = bfd_openr_next_archived_file
+ (archive_bfd, member_bfd);
+ bfd_close (prev);
+ }
+ if (member_bfd == NULL)
+ {
+ warning (_("Could not find specified archive member "
+ "for OSO name \"%s\""), oso->name);
+ bfd_close (archive_bfd);
+ continue;
+ }
+
+ bfd_set_cacheable (member_bfd, 1);
+
+ if (!bfd_check_format (member_bfd, bfd_object))
+ {
+ warning (_("`%s': can't read symbols: %s."), oso->name,
+ bfd_errmsg (bfd_get_error ()));
+ bfd_close (member_bfd);
+ }
+ else
+ symbol_file_add_from_bfd (member_bfd, 0, addrs, 0, 0);
+ }
+ else
+ {
+ bfd *abfd;
+
+ abfd = bfd_openr (oso->name, gnutarget);
+ if (!abfd)
+ {
+ warning (_("`%s': can't open to read symbols: %s."), oso->name,
+ bfd_errmsg (bfd_get_error ()));
+ continue;
+ }
+ bfd_set_cacheable (abfd, 1);
+
+ if (!bfd_check_format (abfd, bfd_object))
+ {
+ bfd_close (abfd);
+ warning (_("`%s': can't read symbols: %s."), oso->name,
+ bfd_errmsg (bfd_get_error ()));
+ continue;
+ }
+
+ symbol_file_add_from_bfd (abfd, 0, addrs, 0, 0);
+ }
+ xfree (oso->symbols);
+ xfree (oso->offsets);
+ }
+ VEC_free (oso_el, vec);
+}
+
+/* DSYM (debug symbols) files contain the debug info of an executable.
+ This is a separate file created by dsymutil(1) and is similar to debug
+ link feature on ELF.
+ DSYM files are located in a subdirectory. Append DSYM_SUFFIX to the
+ executable name and the executable base name to get the DSYM file name. */
+#define DSYM_SUFFIX ".dSYM/Contents/Resources/DWARF/"
+
+/* Check if a dsym file exists for OBJFILE. If so, returns a bfd for it.
+ Return NULL if no valid dsym file is found. */
+static bfd *
+macho_check_dsym (struct objfile *objfile)
+{
+ size_t name_len = strlen (objfile->name);
+ size_t dsym_len = strlen (DSYM_SUFFIX);
+ const char *base_name = lbasename (objfile->name);
+ size_t base_len = strlen (base_name);
+ char *dsym_filename = alloca (name_len + dsym_len + base_len + 1);
+ bfd *dsym_bfd;
+ asection *sect;
+ bfd_byte main_uuid[16];
+ bfd_byte dsym_uuid[16];
+
+ strcpy (dsym_filename, objfile->name);
+ strcpy (dsym_filename + name_len, DSYM_SUFFIX);
+ strcpy (dsym_filename + name_len + dsym_len, base_name);
+
+ if (access (dsym_filename, R_OK) != 0)
+ return NULL;
+
+ sect = bfd_get_section_by_name (objfile->obfd, "LC_UUID");
+ if (sect == NULL)
+ {
+ warning (_("can't find UUID in %s"), objfile->name);
+ return NULL;
+ }
+ if (!bfd_get_section_contents (objfile->obfd, sect, main_uuid,
+ 0, sizeof (main_uuid)))
+ {
+ warning (_("can't read UUID in %s"), objfile->name);
+ return NULL;
+ }
+
+ dsym_filename = xstrdup (dsym_filename);
+ dsym_bfd = bfd_openr (dsym_filename, gnutarget);
+ if (dsym_bfd == NULL)
+ {
+ warning (_("can't open dsym file %s"), dsym_filename);
+ xfree (dsym_filename);
+ return NULL;
+ }
+
+ if (!bfd_check_format (dsym_bfd, bfd_object))
+ {
+ bfd_close (dsym_bfd);
+ warning (_("bad dsym file format: %s"), bfd_errmsg (bfd_get_error ()));
+ xfree (dsym_filename);
+ return NULL;
+ }
+
+ sect = bfd_get_section_by_name (dsym_bfd, "LC_UUID");
+ if (sect == NULL)
+ {
+ warning (_("can't find UUID in %s"), dsym_filename);
+ bfd_close (dsym_bfd);
+ xfree (dsym_filename);
+ return NULL;
+ }
+ if (!bfd_get_section_contents (dsym_bfd, sect, dsym_uuid,
+ 0, sizeof (dsym_uuid)))
+ {
+ warning (_("can't read UUID in %s"), dsym_filename);
+ bfd_close (dsym_bfd);
+ xfree (dsym_filename);
+ return NULL;
+ }
+ if (memcmp (dsym_uuid, main_uuid, sizeof (main_uuid)))
+ {
+ warning (_("dsym file UUID doesn't match the one in %s"), objfile->name);
+ bfd_close (dsym_bfd);
+ xfree (dsym_filename);
+ return NULL;
+ }
+ return dsym_bfd;
+
+}
+
+static void
+macho_symfile_read (struct objfile *objfile, int mainline)
+{
+ bfd *abfd = objfile->obfd;
+ struct cleanup *back_to;
+ CORE_ADDR offset;
+ long storage_needed;
+ bfd *dsym_bfd;
+
+ init_minimal_symbol_collection ();
+ back_to = make_cleanup_discard_minimal_symbols ();
+
+ /* Get symbols from the symbol table only if the file is an executable.
+ The symbol table of object files is not relocated and is expected to
+ be in the executable. */
+ if (bfd_get_file_flags (abfd) & EXEC_P)
+ {
+ /* Process the normal symbol table first. */
+ storage_needed = bfd_get_symtab_upper_bound (objfile->obfd);
+ if (storage_needed < 0)
+ error (_("Can't read symbols from %s: %s"),
+ bfd_get_filename (objfile->obfd),
+ bfd_errmsg (bfd_get_error ()));
+
+ if (storage_needed > 0)
+ {
+ asymbol **symbol_table;
+ long symcount;
+
+ symbol_table = (asymbol **) xmalloc (storage_needed);
+ make_cleanup (xfree, symbol_table);
+ symcount = bfd_canonicalize_symtab (objfile->obfd, symbol_table);
+
+ if (symcount < 0)
+ error (_("Can't read symbols from %s: %s"),
+ bfd_get_filename (objfile->obfd),
+ bfd_errmsg (bfd_get_error ()));
+
+ macho_symtab_read (objfile, symcount, symbol_table);
+ }
+
+ install_minimal_symbols (objfile);
+
+ /* Check for DSYM file. */
+ dsym_bfd = macho_check_dsym (objfile);
+ if (dsym_bfd != NULL)
+ {
+ int ix;
+ oso_el *oso;
+
+ if (mach_o_debug_level > 0)
+ printf_unfiltered (_("dsym file found\n"));
+
+ /* Remove oso. They won't be used. */
+ for (ix = 0; VEC_iterate (oso_el, oso_vector, ix, oso); ix++)
+ {
+ xfree (oso->symbols);
+ xfree (oso->offsets);
+ }
+ VEC_free (oso_el, oso_vector);
+ oso_vector = NULL;
+
+ /* Now recurse: read dwarf from dsym. */
+ symbol_file_add_from_bfd (dsym_bfd, 0, NULL, 0, 0);
+
+ /* Don't try to read dwarf2 from main file. */
+ return;
+ }
+ }
+
+ if (dwarf2_has_info (objfile))
+ {
+ /* DWARF 2 sections */
+ dwarf2_build_psymtabs (objfile, mainline);
+ }
+
+ /* FIXME: kettenis/20030504: This still needs to be integrated with
+ dwarf2read.c in a better way. */
+ dwarf2_build_frame_info (objfile);
+
+ /* Then the oso. */
+ if (oso_vector != NULL)
+ macho_oso_symfile (objfile);
+}
+
+static void
+macho_symfile_finish (struct objfile *objfile)
+{
+}
+
+static void
+macho_symfile_offsets (struct objfile *objfile,
+ struct section_addr_info *addrs)
+{
+ unsigned int i;
+ unsigned int num_sections;
+ struct obj_section *osect;
+
+ /* Allocate section_offsets. */
+ objfile->num_sections = bfd_count_sections (objfile->obfd);
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->objfile_obstack,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+ memset (objfile->section_offsets, 0,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+
+ /* This code is run when we first add the objfile with
+ symfile_add_with_addrs_or_offsets, when "addrs" not "offsets" are
+ passed in. The place in symfile.c where the addrs are applied
+ depends on the addrs having section names. But in the dyld code
+ we build an anonymous array of addrs, so that code is a no-op.
+ Because of that, we have to apply the addrs to the sections here.
+ N.B. if an objfile slides after we've already created it, then it
+ goes through objfile_relocate. */
+
+ for (i = 0; i < addrs->num_sections; i++)
+ {
+ if (addrs->other[i].name == NULL)
+ continue;
+
+ ALL_OBJFILE_OSECTIONS (objfile, osect)
+ {
+ const char *bfd_sect_name = osect->the_bfd_section->name;
+
+ if (strcmp (bfd_sect_name, addrs->other[i].name) == 0)
+ {
+ obj_section_offset (osect) = addrs->other[i].addr;
+ break;
+ }
+ }
+ }
+
+ objfile->sect_index_text = 0;
+
+ ALL_OBJFILE_OSECTIONS (objfile, osect)
+ {
+ const char *bfd_sect_name = osect->the_bfd_section->name;
+ int sect_index = osect->the_bfd_section->index;
+
+ if (strcmp (bfd_sect_name, "LC_SEGMENT.__TEXT") == 0)
+ objfile->sect_index_text = sect_index;
+ else if (strcmp (bfd_sect_name, "LC_SEGMENT.__TEXT.__text") == 0)
+ objfile->sect_index_text = sect_index;
+ }
+}
+
+static struct sym_fns macho_sym_fns = {
+ bfd_target_mach_o_flavour,
+
+ macho_new_init, /* sym_new_init: init anything gbl to entire symtab */
+ macho_symfile_init, /* sym_init: read initial info, setup for sym_read() */
+ macho_symfile_read, /* sym_read: read a symbol file into symtab */
+ macho_symfile_finish, /* sym_finish: finished with file, cleanup */
+ macho_symfile_offsets, /* sym_offsets: xlate external to internal form */
+ NULL /* next: pointer to next struct sym_fns */
+};
+
+void
+_initialize_machoread ()
+{
+ add_symtab_fns (&macho_sym_fns);
+
+ add_setshow_zinteger_cmd ("mach-o", class_obscure,
+ &mach_o_debug_level, _("\
+Set if printing Mach-O symbols processing."), _("\
+Show if printing Mach-O symbols processing."), NULL,
+ NULL, NULL,
+ &setdebuglist, &showdebuglist);
+}
"Cygwin",
"AIX",
"DICOS",
+ "Darwin",
"<invalid>"
};
projects / binutils-gdb.git / commitdiff