/* Handle SOM shared libraries.
- Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010
+ Copyright (C) 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
This file is part of GDB.
#include "solib.h"
#include "solib-som.h"
-#include <sys/utsname.h>
#include <string.h>
#undef SOLIB_SOM_DBG
/* These ought to be defined in some public interface, but aren't. They
define the meaning of the various bits in the distinguished __dld_flags
variable that is declared in every debuggable a.out on HP-UX, and that
- is shared between the debugger and the dynamic linker.
- */
+ is shared between the debugger and the dynamic linker. */
+
#define DLD_FLAGS_MAPPRIVATE 0x1
#define DLD_FLAGS_HOOKVALID 0x2
#define DLD_FLAGS_LISTVALID 0x4
struct lm_info
{
- /* Version of this structure (it is expected to change again in hpux10). */
+ /* Version of this structure (it is expected to change again in
+ hpux10). */
unsigned char struct_version;
/* Binding mode for this library. */
};
/* These addresses should be filled in by som_solib_create_inferior_hook.
- They are also used elsewhere in this module.
- */
+ They are also used elsewhere in this module. */
+
typedef struct
{
CORE_ADDR address;
}
addr_and_unwind_t;
-/* When adding fields, be sure to clear them in _initialize_som_solib. */
+/* When adding fields, be sure to clear them in _initialize_som_solib. */
static struct
{
int is_valid;
;
}
-/* Get HP-UX major release number. Returns zero if the
- release is not known. */
-static int
-get_hpux_major_release (void)
-{
- static int hpux_major_release = -1;
+/* Variable storing HP-UX major release number.
- if (hpux_major_release == -1)
- {
- struct utsname x;
- char *p;
+ On non-native system, simply assume that the major release number
+ is 11. On native systems, hppa-hpux-nat.c initialization code
+ sets this number to the real one on startup.
+
+ We cannot compute this value here, because we need to make a native
+ call to "uname". We are are not allowed to do that from here, as
+ this file is used for both native and cross debugging. */
- uname (&x);
- p = strchr (x.release, '.');
- hpux_major_release = p ? atoi (p + 1) : 0;
- }
+#define DEFAULT_HPUX_MAJOR_RELEASE 11
+int hpux_major_release = DEFAULT_HPUX_MAJOR_RELEASE;
+static int
+get_hpux_major_release (void)
+{
return hpux_major_release;
}
char buf[4];
CORE_ADDR anaddr;
- /* First, remove all the solib event breakpoints. Their addresses
- may have changed since the last time we ran the program. */
- remove_solib_event_breakpoints ();
-
if (symfile_objfile == NULL)
return;
Note that the above is the pre-HP-UX 9.0 behaviour. At 9.0 and above,
the dld provides an export stub named "__d_trap" as well as the
function named "__d_trap" itself, but doesn't provide "_DLD_HOOK".
- We'll look first for the old flavor and then the new.
- */
+ We'll look first for the old flavor and then the new. */
+
msymbol = lookup_minimal_symbol ("_DLD_HOOK", NULL, symfile_objfile);
if (msymbol == NULL)
msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
&& (dl_header.flags & SHLIB_TEXT_PRIVATE_ENABLE) == 0
&& (dld_flags & DLD_FLAGS_MAPPRIVATE) == 0)
warning
- (_("Private mapping of shared library text was not specified\n"
- "by the executable; setting a breakpoint in a shared library which\n"
- "is not privately mapped will not work. See the HP-UX 11i v3 chatr\n"
- "manpage for methods to privately map shared library text."));
+ (_("\
+Private mapping of shared library text was not specified\n\
+by the executable; setting a breakpoint in a shared library which\n\
+is not privately mapped will not work. See the HP-UX 11i v3 chatr\n\
+manpage for methods to privately map shared library text."));
/* Turn on the flags we care about. */
if (get_hpux_major_release () < 11)
if (status != 0)
error (_("Unable to write __dld_flags."));
- /* Now find the address of _start and set a breakpoint there.
+ /* Now find the address of _start and set a breakpoint there.
We still need this code for two reasons:
* Not all sites have /opt/langtools/lib/end.o, so it's not always
/* Make the breakpoint at "_start" a shared library event breakpoint. */
create_solib_event_breakpoint (target_gdbarch, anaddr);
- clear_symtab_users ();
+ clear_symtab_users (0);
}
static void
we've no work to do.
(If you add clauses to this test, be sure to likewise update the
- test within the loop.)
- */
+ test within the loop.) */
+
if (dld_cache.is_valid)
return;
cover the body of "shl_unload", the second being 4 bytes past
the end of the first. This is a large hack to handle that
case, but since I don't seem to have any legitimate way to
- look for this thing via the symbol table...
- */
+ look for this thing via the symbol table... */
+
if (dld_cache.unload.unwind != NULL)
{
u = find_unwind_entry (dld_cache.unload.unwind->region_end + 4);
}
}
- /* Did we find everything we were looking for? If so, stop. */
+ /* Did we find everything we were looking for? If so, stop. */
if ((dld_cache.load.address != 0)
&& (dld_cache.load_stub.address != 0)
&& (dld_cache.unload.address != 0)
dld_cache.hook_stub.unwind = find_unwind_entry (dld_cache.hook_stub.address);
/* We're prepared not to find some of these symbols, which is why
- this function is a "desire" operation, and not a "require".
- */
+ this function is a "desire" operation, and not a "require". */
}
static int
weren't mapped to a (writeable) private region. However, in
that case the debugger probably isn't able to set the fundamental
breakpoint in the dld callback anyways, so this hack should be
- safe.
- */
+ safe. */
+
if ((pc & (CORE_ADDR) 0xc0000000) == (CORE_ADDR) 0xc0000000)
return 1;
/* Cache the address of some symbols that are part of the dynamic
- linker, if not already known.
- */
+ linker, if not already known. */
+
som_solib_desire_dynamic_linker_symbols ();
- /* Are we in the dld callback? Or its export stub? */
+ /* Are we in the dld callback? Or its export stub? */
u_pc = find_unwind_entry (pc);
if (u_pc == NULL)
return 0;
if ((u_pc == dld_cache.hook.unwind) || (u_pc == dld_cache.hook_stub.unwind))
return 1;
- /* Or the interface of the dld (i.e., "shl_load" or friends)? */
+ /* Or the interface of the dld (i.e., "shl_load" or friends)? */
if ((u_pc == dld_cache.load.unwind)
|| (u_pc == dld_cache.unload.unwind)
|| (u_pc == dld_cache.unload2.unwind)
|| (u_pc == dld_cache.unload_stub.unwind))
return 1;
- /* Apparently this address isn't part of the dld's text. */
+ /* Apparently this address isn't part of the dld's text. */
return 0;
}
return extract_unsigned_integer (buf, 4, byte_order);
}
-/* Does this so's name match the main binary? */
+/* Does this so's name match the main binary? */
static int
match_main (const char *name)
{
/* First link map member should be the executable. */
if ((lm = link_map_start ()) == 0)
- return 0; /* failed somehow... */
+ return 0; /* failed somehow... */
/* Read address of name from target memory to GDB. */
read_memory (lm + offsetof (struct dld_list, name), buf, 4);
return got_value;
}
-/* Return the address of the handle of the shared library in which ADDR belongs.
- If ADDR isn't in any known shared library, return zero. */
-/* this function is used in initialize_hp_cxx_exception_support in
- hppa-hpux-tdep.c */
+/* Return the address of the handle of the shared library in which
+ ADDR belongs. If ADDR isn't in any known shared library, return
+ zero. */
+/* This function is used in initialize_hp_cxx_exception_support in
+ hppa-hpux-tdep.c. */
static CORE_ADDR
som_solib_get_solib_by_pc (CORE_ADDR addr)
som_solib_select (struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- set_solib_ops (gdbarch, &som_so_ops);
+ set_solib_ops (gdbarch, &som_so_ops);
tdep->solib_thread_start_addr = som_solib_thread_start_addr;
tdep->solib_get_got_by_pc = som_solib_get_got_by_pc;
tdep->solib_get_solib_by_pc = som_solib_get_solib_by_pc;
}
/* The rest of these functions are not part of the solib interface; they
- are used by somread.c or hppa-hpux-tdep.c */
+ are used by somread.c or hppa-hpux-tdep.c. */
int
som_solib_section_offsets (struct objfile *objfile,
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