X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fsolib-som.c;h=6100cbe6748f83fb7803d8f63a3817dcff16eb6b;hb=da559b09fdbc9427add796ec7191c37aeb18cced;hp=dcc5f63cbb4ec1ee1f11b655ef4866184c14be1a;hpb=cfa9d6d99135b1d59ecf0756247305cc24869549;p=deliverable%2Fbinutils-gdb.git
diff --git a/gdb/solib-som.c b/gdb/solib-som.c
index dcc5f63cbb..6100cbe674 100644
--- a/gdb/solib-som.c
+++ b/gdb/solib-som.c
@@ -1,12 +1,12 @@
/* Handle SOM shared libraries.
- Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2004-2005, 2007-2012 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ 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,
@@ -15,12 +15,9 @@
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see . */
#include "defs.h"
-#include "som.h"
#include "symtab.h"
#include "bfd.h"
#include "symfile.h"
@@ -31,14 +28,18 @@
#include "hppa-tdep.h"
#include "solist.h"
+#include "solib.h"
+#include "solib-som.h"
+
+#include
#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
@@ -46,7 +47,8 @@
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. */
@@ -84,8 +86,8 @@ struct lm_info
};
/* 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;
@@ -93,7 +95,7 @@ typedef struct
}
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;
@@ -109,17 +111,10 @@ dld_cache;
static void
som_relocate_section_addresses (struct so_list *so,
- struct section_table *sec)
+ struct target_section *sec)
{
flagword aflag = bfd_get_section_flags(so->abfd, sec->the_bfd_section);
- /* solib.c does something similar, but it only recognizes ".text", SOM calls
- the text section "$CODE$". */
- if (strcmp (sec->the_bfd_section->name, "$CODE$") == 0)
- {
- so->textsection = sec;
- }
-
if (aflag & SEC_CODE)
{
sec->addr += so->lm_info->text_addr - so->lm_info->text_link_addr;
@@ -134,6 +129,37 @@ som_relocate_section_addresses (struct so_list *so,
;
}
+
+/* Variable storing HP-UX major release number.
+
+ 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. */
+
+#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;
+}
+
+/* DL header flag defines. */
+#define SHLIB_TEXT_PRIVATE_ENABLE 0x4000
+
+/* The DL header is documented in . We are only interested
+ in the flags field to determine whether the executable wants shared
+ libraries mapped private. */
+struct {
+ short junk[37];
+ short flags;
+} dl_header;
+
/* This hook gets called just before the first instruction in the
inferior process is executed.
@@ -155,18 +181,15 @@ som_relocate_section_addresses (struct so_list *so,
means running until the "_start" is called. */
static void
-som_solib_create_inferior_hook (void)
+som_solib_create_inferior_hook (int from_tty)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
struct minimal_symbol *msymbol;
unsigned int dld_flags, status, have_endo;
asection *shlib_info;
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;
@@ -179,6 +202,10 @@ som_solib_create_inferior_hook (void)
if (bfd_section_size (symfile_objfile->obfd, shlib_info) == 0)
return;
+ /* Read the DL header. */
+ bfd_get_section_contents (symfile_objfile->obfd, shlib_info,
+ (char *) &dl_header, 0, sizeof (dl_header));
+
have_endo = 0;
/* Slam the pid of the process into __d_pid.
@@ -191,7 +218,7 @@ som_solib_create_inferior_hook (void)
goto keep_going;
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
- store_unsigned_integer (buf, 4, PIDGET (inferior_ptid));
+ store_unsigned_integer (buf, 4, byte_order, PIDGET (inferior_ptid));
status = target_write_memory (anaddr, buf, 4);
if (status != 0)
{
@@ -209,8 +236,8 @@ GDB will be unable to track shl_load/shl_unload calls"));
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);
@@ -234,7 +261,7 @@ GDB will be unable to track shl_load/shl_unload calls"));
anaddr = SYMBOL_VALUE (msymbol);
dld_cache.hook_stub.address = anaddr;
}
- store_unsigned_integer (buf, 4, anaddr);
+ store_unsigned_integer (buf, 4, byte_order, anaddr);
msymbol = lookup_minimal_symbol ("__dld_hook", NULL, symfile_objfile);
if (msymbol == NULL)
@@ -259,7 +286,8 @@ Suggest linking with /opt/langtools/lib/end.o.\n\
GDB will be unable to track shl_load/shl_unload calls"));
goto keep_going;
}
- create_solib_event_breakpoint (SYMBOL_VALUE_ADDRESS (msymbol));
+ create_solib_event_breakpoint (target_gdbarch,
+ SYMBOL_VALUE_ADDRESS (msymbol));
/* We have all the support usually found in end.o, so we can track
shl_load and shl_unload calls. */
@@ -281,18 +309,33 @@ keep_going:
status = target_read_memory (anaddr, buf, 4);
if (status != 0)
error (_("Unable to read __dld_flags."));
- dld_flags = extract_unsigned_integer (buf, 4);
+ dld_flags = extract_unsigned_integer (buf, 4, byte_order);
+
+ /* If the libraries were not mapped private on HP-UX 11 and later, warn
+ the user. On HP-UX 10 and earlier, there is no easy way to specify
+ that shared libraries should be privately mapped. So, we just force
+ private mapping. */
+ if (get_hpux_major_release () >= 11
+ && (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."));
/* Turn on the flags we care about. */
- dld_flags |= DLD_FLAGS_MAPPRIVATE;
+ if (get_hpux_major_release () < 11)
+ dld_flags |= DLD_FLAGS_MAPPRIVATE;
if (have_endo)
dld_flags |= DLD_FLAGS_HOOKVALID;
- store_unsigned_integer (buf, 4, dld_flags);
+ store_unsigned_integer (buf, 4, byte_order, dld_flags);
status = target_write_memory (anaddr, buf, 4);
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
@@ -308,9 +351,9 @@ keep_going:
anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
/* Make the breakpoint at "_start" a shared library event breakpoint. */
- create_solib_event_breakpoint (anaddr);
+ create_solib_event_breakpoint (target_gdbarch, anaddr);
- clear_symtab_users ();
+ clear_symtab_users (0);
}
static void
@@ -329,8 +372,8 @@ som_solib_desire_dynamic_linker_symbols (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;
@@ -347,7 +390,7 @@ som_solib_desire_dynamic_linker_symbols (void)
objfile);
if (dld_msymbol != NULL)
{
- if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
+ if (MSYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
{
u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
@@ -369,8 +412,8 @@ som_solib_desire_dynamic_linker_symbols (void)
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);
@@ -386,7 +429,7 @@ som_solib_desire_dynamic_linker_symbols (void)
objfile);
if (dld_msymbol != NULL)
{
- if (SYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
+ if (MSYMBOL_TYPE (dld_msymbol) == mst_solib_trampoline)
{
u = find_unwind_entry (SYMBOL_VALUE (dld_msymbol));
if ((u != NULL) && (u->stub_unwind.stub_type == EXPORT))
@@ -397,7 +440,7 @@ som_solib_desire_dynamic_linker_symbols (void)
}
}
- /* 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)
@@ -412,8 +455,7 @@ som_solib_desire_dynamic_linker_symbols (void)
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
@@ -429,17 +471,17 @@ som_in_dynsym_resolve_code (CORE_ADDR pc)
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;
@@ -447,7 +489,7 @@ som_in_dynsym_resolve_code (CORE_ADDR pc)
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)
@@ -455,7 +497,7 @@ som_in_dynsym_resolve_code (CORE_ADDR pc)
|| (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;
}
@@ -481,6 +523,7 @@ struct dld_list {
static CORE_ADDR
link_map_start (void)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
struct minimal_symbol *sym;
CORE_ADDR addr;
char buf[4];
@@ -491,16 +534,10 @@ link_map_start (void)
error (_("Unable to find __dld_flags symbol in object file."));
addr = SYMBOL_VALUE_ADDRESS (sym);
read_memory (addr, buf, 4);
- dld_flags = extract_unsigned_integer (buf, 4);
+ dld_flags = extract_unsigned_integer (buf, 4, byte_order);
if ((dld_flags & DLD_FLAGS_LISTVALID) == 0)
error (_("__dld_list is not valid according to __dld_flags."));
- /* If the libraries were not mapped private, warn the user. */
- if ((dld_flags & DLD_FLAGS_MAPPRIVATE) == 0)
- warning (_("The shared libraries were not privately mapped; setting a\n"
- "breakpoint in a shared library will not work until you rerun the "
- "program.\n"));
-
sym = lookup_minimal_symbol ("__dld_list", NULL, NULL);
if (!sym)
{
@@ -518,15 +555,15 @@ link_map_start (void)
addr = SYMBOL_VALUE_ADDRESS (sym);
read_memory (addr, buf, 4);
- addr = extract_unsigned_integer (buf, 4);
+ addr = extract_unsigned_integer (buf, 4, byte_order);
if (addr == 0)
return 0;
read_memory (addr, buf, 4);
- return extract_unsigned_integer (buf, 4);
+ 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)
{
@@ -536,6 +573,7 @@ match_main (const char *name)
static struct so_list *
som_current_sos (void)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
CORE_ADDR lm;
struct so_list *head = 0;
struct so_list **link_ptr = &head;
@@ -560,7 +598,7 @@ som_current_sos (void)
read_memory (lm, (gdb_byte *)&dbuf, sizeof (struct dld_list));
addr = extract_unsigned_integer ((gdb_byte *)&dbuf.name,
- sizeof (dbuf.name));
+ sizeof (dbuf.name), byte_order);
target_read_string (addr, &namebuf, SO_NAME_MAX_PATH_SIZE - 1, &errcode);
if (errcode != 0)
warning (_("Can't read pathname for load map: %s."),
@@ -581,7 +619,8 @@ som_current_sos (void)
lmi->lm_addr = lm;
#define EXTRACT(_fld) \
- extract_unsigned_integer ((gdb_byte *)&dbuf._fld, sizeof (dbuf._fld));
+ extract_unsigned_integer ((gdb_byte *)&dbuf._fld, \
+ sizeof (dbuf._fld), byte_order);
lmi->text_addr = EXTRACT (text_addr);
tmp = EXTRACT (info);
@@ -596,31 +635,32 @@ som_current_sos (void)
lmi->got_value = EXTRACT (got_value);
tmp = EXTRACT (tsd_start_addr_ptr);
read_memory (tmp, tsdbuf, 4);
- lmi->tsd_start_addr = extract_unsigned_integer (tsdbuf, 4);
+ lmi->tsd_start_addr
+ = extract_unsigned_integer (tsdbuf, 4, byte_order);
#ifdef SOLIB_SOM_DBG
- printf ("\n+ library \"%s\" is described at 0x%s\n", new->so_name,
- paddr_nz (lm));
+ printf ("\n+ library \"%s\" is described at %s\n", new->so_name,
+ paddress (target_gdbarch, lm));
printf (" 'version' is %d\n", new->lm_info->struct_version);
printf (" 'bind_mode' is %d\n", new->lm_info->bind_mode);
printf (" 'library_version' is %d\n",
new->lm_info->library_version);
- printf (" 'text_addr' is 0x%s\n",
- paddr_nz (new->lm_info->text_addr));
- printf (" 'text_link_addr' is 0x%s\n",
- paddr_nz (new->lm_info->text_link_addr));
- printf (" 'text_end' is 0x%s\n",
- paddr_nz (new->lm_info->text_end));
- printf (" 'data_start' is 0x%s\n",
- paddr_nz (new->lm_info->data_start));
- printf (" 'bss_start' is 0x%s\n",
- paddr_nz (new->lm_info->bss_start));
- printf (" 'data_end' is 0x%s\n",
- paddr_nz (new->lm_info->data_end));
- printf (" 'got_value' is %s\n",
- paddr_nz (new->lm_info->got_value));
- printf (" 'tsd_start_addr' is 0x%s\n",
- paddr_nz (new->lm_info->tsd_start_addr));
+ printf (" 'text_addr' is %s\n",
+ paddress (target_gdbarch, new->lm_info->text_addr));
+ printf (" 'text_link_addr' is %s\n",
+ paddress (target_gdbarch, new->lm_info->text_link_addr));
+ printf (" 'text_end' is %s\n",
+ paddress (target_gdbarch, new->lm_info->text_end));
+ printf (" 'data_start' is %s\n",
+ paddress (target_gdbarch, new->lm_info->data_start));
+ printf (" 'bss_start' is %s\n",
+ paddress (target_gdbarch, new->lm_info->bss_start));
+ printf (" 'data_end' is %s\n",
+ paddress (target_gdbarch, new->lm_info->data_end));
+ printf (" 'got_value' is %s\n",
+ paddress (target_gdbarch, new->lm_info->got_value));
+ printf (" 'tsd_start_addr' is %s\n",
+ paddress (target_gdbarch, new->lm_info->tsd_start_addr));
#endif
new->addr_low = lmi->text_addr;
@@ -650,6 +690,7 @@ som_current_sos (void)
static int
som_open_symbol_file_object (void *from_ttyp)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
CORE_ADDR lm, l_name;
char *filename;
int errcode;
@@ -657,19 +698,19 @@ som_open_symbol_file_object (void *from_ttyp)
char buf[4];
if (symfile_objfile)
- if (!query ("Attempt to reload symbols from process? "))
+ if (!query (_("Attempt to reload symbols from process? ")))
return 0;
/* 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);
/* Convert the address to host format. Assume that the address is
unsigned. */
- l_name = extract_unsigned_integer (buf, 4);
+ l_name = extract_unsigned_integer (buf, 4, byte_order);
if (l_name == 0)
return 0; /* No filename. */
@@ -725,10 +766,11 @@ som_solib_get_got_by_pc (CORE_ADDR addr)
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)
@@ -766,19 +808,22 @@ _initialize_som_solib (void)
som_so_ops.current_sos = som_current_sos;
som_so_ops.open_symbol_file_object = som_open_symbol_file_object;
som_so_ops.in_dynsym_resolve_code = som_in_dynsym_resolve_code;
+ som_so_ops.bfd_open = solib_bfd_open;
}
-void som_solib_select (struct gdbarch_tdep *tdep)
+void
+som_solib_select (struct gdbarch *gdbarch)
{
- current_target_so_ops = &som_so_ops;
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ 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,