Revised: [patch] general updates and improvements to QNX NTO support

Kris Warkentin
2004-12-06T15:35:04Z

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Based on Mark's comments, I've refactored this patch to provide a
cleaner interface to nto_tdep.c. I created an nto_set_target function
so that the targets can initialize their own nto_target_ops and set the
target properly rather than initializing current_nto_target.

I thought about completely hiding the implementation by turning all the
macros into functions which just call the current target functions but
I'm not sure if it's worth it. Specifically I'm thinking about cases
where other modules need access to members of current_nto_target. For
instance, the remote and procfs modules need to set various flags and
hooks so if I were to hide current_nto_target, I'd need setter/getter
functions. Certainly that is the cleaner 'OO' approach. If it needs
changing later, I might also store a list of targets in nto-tdep.c. It
doesn't seem like a high priority right now though since we probably
won't be multi-arching our gdb any time soon.

cheers,

Kris

2004-12-06 Kris Warkentin <kewarken@qnx.com>

* nto-tdep.h: Include osabi.h. Prototypes for generic Neutrino
osabi sniffer, signal handling initializer, 'in_dynsym_resolve_code'
function and nto_set_target function.
(struct nto_target_ops): Put comments inline with struct. Add osabi
sniffer hook. Redefine macros to permit testing/assignment. Remove
nto_ prefix from members.
* nto-tdep.c (nto_find_and_open_solib): Allocate all buffers
dynamically to support arbitrary root paths. Check for basename of
lib in search path and then check for absolute.
(nto_in_dynsym_resolve_code): New function.
(nto_core_sniffer): New function.
(regset_core_fns): Register core sniffer.
(nto_initialize_signals): New function.
(_initialize_nto_tdep): Move signal initialization code to above to
avoid initialization race conditions.
(nto_set_target): New function.
* nto-procfs.c: Minor formatting/indenting changes.
(procfs_is_nto_target): New function.
(procfs_open): Set nto_is_nto_target.
(_initialize_procfs): Ditto. Remove notice_signals() call to avoid
initialization race conditions.
(procfs_create_inferior): Resume inferior after creation.
* i386-nto-tdep.c: Declare i386_nto_target.
(init_i386nto_ops): Initialize i386_nto_target instead of
current_nto_target.
(i386nto_init_abi): Initialize signals. Call nto_set_target. Set
TARGET_SO_IN_DYNSYM_RESOLVE_CODE.
(_initialize_i386nto_tdep): Call init_i386nto_ops. Register osabi
sniffer.

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Index: i386-nto-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/i386-nto-tdep.c,v
retrieving revision 1.15
diff -u -r1.15 i386-nto-tdep.c
--- i386-nto-tdep.c 31 Oct 2004 19:52:46 -0000 1.15
+++ i386-nto-tdep.c 6 Dec 2004 15:05:48 -0000
@@ -59,6 +59,8 @@
(-1 * 4) /* filler */
};

+static struct nto_target_ops i386_nto_target;
+
/* Given a gdb regno, return the offset into Neutrino's register structure
or -1 if register is unknown. */
static int
@@ -258,14 +260,14 @@
static void
init_i386nto_ops (void)
{
- current_nto_target.nto_regset_id = i386nto_regset_id;
- current_nto_target.nto_supply_gregset = i386nto_supply_gregset;
- current_nto_target.nto_supply_fpregset = i386nto_supply_fpregset;
- current_nto_target.nto_supply_altregset = nto_dummy_supply_regset;
- current_nto_target.nto_supply_regset = i386nto_supply_regset;
- current_nto_target.nto_register_area = i386nto_register_area;
- current_nto_target.nto_regset_fill = i386nto_regset_fill;
- current_nto_target.nto_fetch_link_map_offsets =
+ i386_nto_target.regset_id = i386nto_regset_id;
+ i386_nto_target.supply_gregset = i386nto_supply_gregset;
+ i386_nto_target.supply_fpregset = i386nto_supply_fpregset;
+ i386_nto_target.supply_altregset = nto_dummy_supply_regset;
+ i386_nto_target.supply_regset = i386nto_supply_regset;
+ i386_nto_target.register_area = i386nto_register_area;
+ i386_nto_target.regset_fill = i386nto_regset_fill;
+ i386_nto_target.fetch_link_map_offsets =
i386nto_svr4_fetch_link_map_offsets;
}

@@ -274,6 +276,9 @@
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

+ /* Deal with our strange signals. */
+ nto_initialize_signals ();
+
/* NTO uses ELF. */
i386_elf_init_abi (info, gdbarch);

@@ -301,12 +306,18 @@
/* Supply a nice function to find our solibs. */
TARGET_SO_FIND_AND_OPEN_SOLIB = nto_find_and_open_solib;

- init_i386nto_ops ();
+ /* Our linker code is in libc. */
+ TARGET_SO_IN_DYNSYM_RESOLVE_CODE = nto_in_dynsym_resolve_code;
+
+ nto_set_target (&i386_nto_target);
}

void
_initialize_i386nto_tdep (void)
{
+ init_i386nto_ops ();
gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_QNXNTO,
i386nto_init_abi);
+ gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_elf_flavour,
+ nto_elf_osabi_sniffer);
}
Index: nto-procfs.c
===================================================================
RCS file: /cvs/src/src/gdb/nto-procfs.c,v
retrieving revision 1.6
diff -u -r1.6 nto-procfs.c
--- nto-procfs.c 8 Oct 2004 20:29:47 -0000 1.6
+++ nto-procfs.c 6 Dec 2004 15:05:48 -0000
@@ -97,20 +97,26 @@
is required is because QNX node descriptors are transient so
we have to re-acquire them every time. */
static unsigned
-nto_node(void)
+nto_node (void)
{
unsigned node;

- if (ND_NODE_CMP(nto_procfs_node, ND_LOCAL_NODE) == 0)
+ if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) == 0)
return ND_LOCAL_NODE;

- node = netmgr_strtond(nto_procfs_path,0);
+ node = netmgr_strtond (nto_procfs_path, 0);
if (node == -1)
- error ("Lost the QNX node. Debug session probably over.");
+ error ("Lost the QNX node. Debug session probably over.");

return (node);
}

+static enum gdb_osabi
+procfs_is_nto_target (bfd *abfd)
+{
+ return GDB_OSABI_QNXNTO;
+}
+
/* This is called when we call 'target procfs <arg>' from the (gdb) prompt.
For QNX6 (nto), the only valid arg will be a QNX node string,
eg: "/net/some_node". If arg is not a valid QNX node, we will
@@ -124,6 +130,8 @@
int fd, total_size;
procfs_sysinfo *sysinfo;

+ nto_is_nto_target = procfs_is_nto_target;
+
/* Set the default node used for spawning to this one,
and only override it if there is a valid arg. */

@@ -153,7 +161,8 @@
*endstr = 0;
}
}
- snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "", "/proc");
+ snprintf (nto_procfs_path, PATH_MAX - 1, "%s%s", nodestr ? nodestr : "",
+ "/proc");
if (nodestr)
xfree (nodestr);

@@ -271,7 +280,7 @@
if (dp == NULL)
{
fprintf_unfiltered (gdb_stderr, "failed to opendir \"%s\" - %d (%s)",
- nto_procfs_path, errno, safe_strerror (errno));
+ nto_procfs_path, errno, safe_strerror (errno));
return;
}

@@ -299,7 +308,7 @@
if (fd == -1)
{
fprintf_unfiltered (gdb_stderr, "failed to open %s - %d (%s)\n",
- buf, errno, safe_strerror (errno));
+ buf, errno, safe_strerror (errno));
closedir (dp);
return;
}
@@ -308,8 +317,8 @@
if (devctl (fd, DCMD_PROC_INFO, pidinfo, sizeof (buf), 0) != EOK)
{
fprintf_unfiltered (gdb_stderr,
- "devctl DCMD_PROC_INFO failed - %d (%s)\n", errno,
- safe_strerror (errno));
+ "devctl DCMD_PROC_INFO failed - %d (%s)\n",
+ errno, safe_strerror (errno));
break;
}
num_threads = pidinfo->num_threads;
@@ -375,7 +384,8 @@
err = devctl (ctl_fd, DCMD_PROC_MAPINFO, NULL, 0, &num);
if (err != EOK)
{
- printf ("failed devctl num mapinfos - %d (%s)\n", err, safe_strerror (err));
+ printf ("failed devctl num mapinfos - %d (%s)\n", err,
+ safe_strerror (err));
return;
}

@@ -565,7 +575,7 @@

if (devctl (ctl_fd, DCMD_PROC_STATUS, &status, sizeof (status), 0) == EOK
&& status.flags & _DEBUG_FLAG_STOPPED)
- SignalKill (nto_node(), PIDGET (ptid), 0, SIGCONT, 0, 0);
+ SignalKill (nto_node (), PIDGET (ptid), 0, SIGCONT, 0, 0);
attach_flag = 1;
nto_init_solib_absolute_prefix ();
return ptid;
@@ -778,7 +788,7 @@
siggnal = atoi (args);

if (siggnal)
- SignalKill (nto_node(), PIDGET (inferior_ptid), 0, siggnal, 0, 0);
+ SignalKill (nto_node (), PIDGET (inferior_ptid), 0, siggnal, 0, 0);

close (ctl_fd);
ctl_fd = -1;
@@ -868,8 +878,8 @@
{
if (signal_to_pass != status.info.si_signo)
{
- SignalKill (nto_node(), PIDGET (inferior_ptid), 0, signal_to_pass,
- 0, 0);
+ SignalKill (nto_node (), PIDGET (inferior_ptid), 0,
+ signal_to_pass, 0, 0);
run.flags |= _DEBUG_RUN_CLRFLT | _DEBUG_RUN_CLRSIG;
}
else /* Let it kill the program without telling us. */
@@ -892,7 +902,7 @@
{
if (!ptid_equal (inferior_ptid, null_ptid))
{
- SignalKill (nto_node(), PIDGET (inferior_ptid), 0, SIGKILL, 0, 0);
+ SignalKill (nto_node (), PIDGET (inferior_ptid), 0, SIGKILL, 0, 0);
close (ctl_fd);
}
inferior_ptid = null_ptid;
@@ -1042,7 +1052,7 @@

if (ND_NODE_CMP (nto_procfs_node, ND_LOCAL_NODE) != 0)
{
- inherit.nd = nto_node();
+ inherit.nd = nto_node ();
inherit.flags |= SPAWN_SETND;
inherit.flags &= ~SPAWN_EXEC;
}
@@ -1055,7 +1065,8 @@
sigprocmask (SIG_BLOCK, &set, NULL);

if (pid == -1)
- error ("Error spawning %s: %d (%s)", argv[0], errno, safe_strerror (errno));
+ error ("Error spawning %s: %d (%s)", argv[0], errno,
+ safe_strerror (errno));

if (fds[0] != STDIN_FILENO)
close (fds[0]);
@@ -1083,6 +1094,8 @@
|| (symfile_objfile != NULL && symfile_objfile->obfd != NULL))
SOLIB_CREATE_INFERIOR_HOOK (pid);
#endif
+ stop_soon = 0;
+ proceed (-1, TARGET_SIGNAL_DEFAULT, 0);
}

static void
@@ -1324,7 +1337,6 @@

/* Set up trace and fault sets, as gdb expects them. */
sigemptyset (&run.trace);
- notice_signals ();

/* Stuff some information. */
nto_cpuinfo_flags = SYSPAGE_ENTRY (cpuinfo)->flags;
@@ -1332,6 +1344,8 @@

add_info ("pidlist", procfs_pidlist, "pidlist");
add_info ("meminfo", procfs_meminfo, "memory information");
+
+ nto_is_nto_target = procfs_is_nto_target;
}

Index: nto-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/nto-tdep.c,v
retrieving revision 1.9
diff -u -r1.9 nto-tdep.c
--- nto-tdep.c 30 Jul 2004 19:17:19 -0000 1.9
+++ nto-tdep.c 6 Dec 2004 15:05:48 -0000
@@ -65,6 +65,19 @@
#endif
}

+void
+nto_set_target(struct nto_target_ops *targ)
+{
+ nto_regset_id = targ->regset_id;
+ nto_supply_gregset = targ->supply_gregset;
+ nto_supply_fpregset = targ->supply_fpregset;
+ nto_supply_altregset = targ->supply_altregset;
+ nto_supply_regset = targ->supply_regset;
+ nto_register_area = targ->register_area;
+ nto_regset_fill = targ->regset_fill;
+ nto_fetch_link_map_offsets = targ->fetch_link_map_offsets;
+}
+
/* Take a string such as i386, rs6000, etc. and map it onto CPUTYPE_X86,
CPUTYPE_PPC, etc. as defined in nto-share/dsmsgs.h. */
int
@@ -86,10 +99,10 @@
int
nto_find_and_open_solib (char *solib, unsigned o_flags, char **temp_pathname)
{
- char *buf, arch_path[PATH_MAX], *nto_root, *endian;
+ char *buf, *arch_path, *nto_root, *endian, *base;
const char *arch;
- char *path_fmt = "%s/lib:%s/usr/lib:%s/usr/photon/lib\
-:%s/usr/photon/dll:%s/lib/dll";
+ int ret;
+#define PATH_FMT "%s/lib:%s/usr/lib:%s/usr/photon/lib:%s/usr/photon/dll:%s/lib/dll"

nto_root = nto_target ();
if (strcmp (TARGET_ARCHITECTURE->arch_name, "i386") == 0)
@@ -109,13 +122,38 @@
endian = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "be" : "le";
}

+ /* In case nto_root is short, add strlen(solib)
+ so we can reuse arch_path below. */
+ arch_path =
+ alloca (strlen (nto_root) + strlen (arch) + strlen (endian) + 2 +
+ strlen (solib));
sprintf (arch_path, "%s/%s%s", nto_root, arch, endian);

- buf = alloca (strlen (path_fmt) + strlen (arch_path) * 5 + 1);
- sprintf (buf, path_fmt, arch_path, arch_path, arch_path, arch_path,
+ buf = alloca (strlen (PATH_FMT) + strlen (arch_path) * 5 + 1);
+ sprintf (buf, PATH_FMT, arch_path, arch_path, arch_path, arch_path,
arch_path);

- return openp (buf, OPF_TRY_CWD_FIRST, solib, o_flags, 0, temp_pathname);
+ /* Don't assume basename() isn't destructive. */
+ base = strrchr (solib, '/');
+ if (!base)
+ base = solib;
+ else
+ base++; /* Skip over '/'. */
+
+ ret = openp (buf, 1, base, o_flags, 0, temp_pathname);
+ if (ret < 0 && base != solib)
+ {
+ sprintf (arch_path, "/%s", solib);
+ ret = open (arch_path, o_flags, 0);
+ if (temp_pathname)
+ {
+ if (ret >= 0)
+ *temp_pathname = gdb_realpath (arch_path);
+ else
+ **temp_pathname = '\0';
+ }
+ }
+ return ret;
}

void
@@ -266,6 +304,53 @@
sec->endaddr = nto_truncate_ptr (sec->endaddr + LM_ADDR (so) - vaddr);
}

+/* This is cheating a bit because our linker code is in libc.so. If we
+ ever implement lazy linking, this may need to be re-examined. */
+int
+nto_in_dynsym_resolve_code (CORE_ADDR pc)
+{
+ if (in_plt_section (pc, NULL))
+ return 1;
+ return 0;
+}
+
+void
+nto_generic_supply_gpregset (const struct regset *regset,
+ struct regcache *regcache, int regnum,
+ const void *gregs, size_t len)
+{
+}
+
+void
+nto_generic_supply_fpregset (const struct regset *regset,
+ struct regcache *regcache, int regnum,
+ const void *fpregs, size_t len)
+{
+}
+
+void
+nto_generic_supply_altregset (const struct regset *regset,
+ struct regcache *regcache, int regnum,
+ const void *altregs, size_t len)
+{
+}
+
+void
+nto_dummy_supply_regset (char *regs)
+{
+ /* Do nothing. */
+}
+
+enum gdb_osabi
+nto_elf_osabi_sniffer (bfd *abfd)
+{
+ if (nto_is_nto_target)
+ {
+ return nto_is_nto_target (abfd);
+ }
+ return GDB_OSABI_UNKNOWN;
+}
+
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size,
int which, CORE_ADDR reg_addr)
@@ -287,12 +372,6 @@
}
}

-void
-nto_dummy_supply_regset (char *regs)
-{
- /* Do nothing. */
-}
-
/* Register that we are able to handle ELF file formats using standard
procfs "regset" structures. */
static struct core_fns regset_core_fns = {
@@ -304,18 +383,8 @@
};

void
-_initialize_nto_tdep (void)
+nto_initialize_signals (void)
{
- add_setshow_zinteger_cmd ("nto-debug", class_maintenance,
- &nto_internal_debugging, "\
-Set QNX NTO internal debugging.", "\
-Show QNX NTO internal debugging.", "\
-When non-zero, nto specific debug info is\n\
-displayed. Different information is displayed\n\
-for different positive values.", "\
-QNX NTO internal debugging is %s.",
- NULL, NULL, &setdebuglist, &showdebuglist);
-
/* We use SIG45 for pulses, or something, so nostop, noprint
and pass them. */
signal_stop_update (target_signal_from_name ("SIG45"), 0);
@@ -334,7 +403,19 @@
signal_print_update (SIGPHOTON, 0);
signal_pass_update (SIGPHOTON, 1);
#endif
+}

+void
+_initialize_nto_tdep (void)
+{
+ add_setshow_zinteger_cmd ("nto-debug", class_maintenance,
+ &nto_internal_debugging, "\
+Set QNX NTO internal debugging.", "\
+Show QNX NTO internal debugging.", "\
+When non-zero, nto specific debug info is\n\
+displayed. Different information is displayed\n\
+for different positive values.", "\
+QNX NTO internal debugging is %s.", NULL, NULL, &setdebuglist, &showdebuglist);
/* Register core file support. */
deprecated_add_core_fns (&regset_core_fns);
}
Index: nto-tdep.h
===================================================================
RCS file: /cvs/src/src/gdb/nto-tdep.h,v
retrieving revision 1.2
diff -u -r1.2 nto-tdep.h
--- nto-tdep.h 6 May 2003 16:47:47 -0000 1.2
+++ nto-tdep.h 6 Dec 2004 15:05:48 -0000
@@ -26,49 +26,15 @@

#include "defs.h"
#include "solist.h"
-
-/* Generic functions in nto-tdep.c. */
-
-extern void nto_init_solib_absolute_prefix (void);
-
-char **nto_parse_redirection (char *start_argv[], char **in,
- char **out, char **err);
-
-int proc_iterate_over_mappings (int (*func) (int, CORE_ADDR));
-
-void nto_relocate_section_addresses (struct so_list *, struct section_table *);
-
-int nto_map_arch_to_cputype (const char *);
-
-int nto_find_and_open_solib (char *, unsigned, char **);
-
-/* Dummy function for initializing nto_target_ops on targets which do
- not define a particular regset. */
-void nto_dummy_supply_regset (char *regs);
+#include "osabi.h"
+#include "regset.h"

/* Target operations defined for Neutrino targets (<target>-nto-tdep.c). */

struct nto_target_ops
{
- int nto_internal_debugging;
- unsigned nto_cpuinfo_flags;
- int nto_cpuinfo_valid;
-
- int (*nto_regset_id) (int);
- void (*nto_supply_gregset) (char *);
- void (*nto_supply_fpregset) (char *);
- void (*nto_supply_altregset) (char *);
- void (*nto_supply_regset) (int, char *);
- int (*nto_register_area) (int, int, unsigned *);
- int (*nto_regset_fill) (int, char *);
- struct link_map_offsets *(*nto_fetch_link_map_offsets) (void);
-};
-
-extern struct nto_target_ops current_nto_target;
-
/* For 'maintenance debug nto-debug' command. */
-#define nto_internal_debugging \
- (current_nto_target.nto_internal_debugging)
+ int internal_debugging;

/* The CPUINFO flags from the remote. Currently used by
i386 for fxsave but future proofing other hosts.
@@ -76,47 +42,69 @@
depending on our host/target. It would only be invalid
if we were talking to an older pdebug which didn't support
the cpuinfo message. */
-#define nto_cpuinfo_flags \
- (current_nto_target.nto_cpuinfo_flags)
+ unsigned cpuinfo_flags;

/* True if successfully retrieved cpuinfo from remote. */
-#define nto_cpuinfo_valid \
- (current_nto_target.nto_cpuinfo_valid)
+ int cpuinfo_valid;

/* Given a register, return an id that represents the Neutrino
regset it came from. If reg == -1 update all regsets. */
-#define nto_regset_id(reg) \
- (*current_nto_target.nto_regset_id) (reg)
+ int (*regset_id) (int);

-#define nto_supply_gregset(regs) \
- (*current_nto_target.nto_supply_gregset) (regs)
+ void (*supply_gregset) (char *);

-#define nto_supply_fpregset(regs) \
- (*current_nto_target.nto_supply_fpregset) (regs)
+ void (*supply_fpregset) (char *);

-#define nto_supply_altregset(regs) \
- (*current_nto_target.nto_supply_altregset) (regs)
+ void (*supply_altregset) (char *);

/* Given a regset, tell gdb about registers stored in data. */
-#define nto_supply_regset(regset, data) \
- (*current_nto_target.nto_supply_regset) (regset, data)
+ void (*supply_regset) (int, char *);

/* Given a register and regset, calculate the offset into the regset
and stuff it into the last argument. If regno is -1, calculate the
size of the entire regset. Returns length of data, -1 if unknown
regset, 0 if unknown register. */
-#define nto_register_area(reg, regset, off) \
- (*current_nto_target.nto_register_area) (reg, regset, off)
+ int (*register_area) (int, int, unsigned *);

/* Build the Neutrino register set info into the data buffer.
Return -1 if unknown regset, 0 otherwise. */
-#define nto_regset_fill(regset, data) \
- (*current_nto_target.nto_regset_fill) (regset, data)
+ int (*regset_fill) (int, char *);

/* Gives the fetch_link_map_offsets function exposure outside of
solib-svr4.c so that we can override relocate_section_addresses(). */
-#define nto_fetch_link_map_offsets() \
- (*current_nto_target.nto_fetch_link_map_offsets) ()
+ struct link_map_offsets *(*fetch_link_map_offsets) (void);
+
+/* Used by nto_elf_osabi_sniffer to determine if we're connected to an
+ Neutrino target. */
+ enum gdb_osabi (*is_nto_target) (bfd *abfd);
+};
+
+extern struct nto_target_ops current_nto_target;
+
+#define nto_internal_debugging (current_nto_target.internal_debugging)
+
+#define nto_cpuinfo_flags (current_nto_target.cpuinfo_flags)
+
+#define nto_cpuinfo_valid (current_nto_target.cpuinfo_valid)
+
+#define nto_regset_id (current_nto_target.regset_id)
+
+#define nto_supply_gregset (current_nto_target.supply_gregset)
+
+#define nto_supply_fpregset (current_nto_target.supply_fpregset)
+
+#define nto_supply_altregset (current_nto_target.supply_altregset)
+
+#define nto_supply_regset (current_nto_target.supply_regset)
+
+#define nto_register_area (current_nto_target.register_area)
+
+#define nto_regset_fill (current_nto_target.regset_fill)
+
+#define nto_fetch_link_map_offsets \
+(current_nto_target.fetch_link_map_offsets)
+
+#define nto_is_nto_target (current_nto_target.is_nto_target)

/* Keep this consistant with neutrino syspage.h. */
enum
@@ -153,4 +141,41 @@
qnx_reg64 padding[1024];
} nto_regset_t;

+/* Generic functions in nto-tdep.c. */
+
+void nto_init_solib_absolute_prefix (void);
+
+void nto_set_target(struct nto_target_ops *);
+
+char **nto_parse_redirection (char *start_argv[], char **in,
+ char **out, char **err);
+
+int proc_iterate_over_mappings (int (*func) (int, CORE_ADDR));
+
+void nto_relocate_section_addresses (struct so_list *,
+ struct section_table *);
+
+int nto_map_arch_to_cputype (const char *);
+
+int nto_find_and_open_solib (char *, unsigned, char **);
+
+enum gdb_osabi nto_elf_osabi_sniffer (bfd *abfd);
+
+void nto_initialize_signals (void);
+
+void nto_generic_supply_gpregset (const struct regset *, struct regcache *,
+ int, const void *, size_t);
+
+void nto_generic_supply_fpregset (const struct regset *, struct regcache *,
+ int, const void *, size_t);
+
+void nto_generic_supply_altregset (const struct regset *, struct regcache *,
+ int, const void *, size_t);
+
+/* Dummy function for initializing nto_target_ops on targets which do
+ not define a particular regset. */
+void nto_dummy_supply_regset (char *regs);
+
+int nto_in_dynsym_resolve_code (CORE_ADDR pc);
+
#endif