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* somsolib.c (som_solib_get_got_by_pc): New function.

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* somsolib.h (som_solib_get_got_by_pc): Add extern decl.
	* hppa-tdep.c (hppa_fix_call_dummy): Handle case where FUN is the
	function's export stub or real address in a shared library.
This commit is contained in:
Jeff Law 1994-12-01 05:34:30 +00:00
parent 002199bca4
commit b1bbe38b3d
4 changed files with 46 additions and 2 deletions
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7
gdb/ChangeLog
View file

@ -1,3 +1,10 @@
Wed Nov 30 22:27:27 1994 Jeff Law (law@snake.cs.utah.edu)
* somsolib.c (som_solib_get_got_by_pc): New function.
* somsolib.h (som_solib_get_got_by_pc): Add extern decl.
* hppa-tdep.c (hppa_fix_call_dummy): Handle case where FUN is the
function's export stub or real address in a shared library.
Tue Nov 29 13:40:25 1994 J.T. Conklin (jtc@rtl.cygnus.com) Tue Nov 29 13:40:25 1994 J.T. Conklin (jtc@rtl.cygnus.com)
* config/i386/nbsd.mh (REGEX, REGEX1): No longer define. * config/i386/nbsd.mh (REGEX, REGEX1): No longer define.

13
gdb/hppa-tdep.c
View file

@ -1378,6 +1378,19 @@ hppa_fix_call_dummy (dummy, pc, fun, nargs, args, type, gcc_p)
at *fun. */ at *fun. */
fun = (CORE_ADDR) read_memory_integer (fun & ~0x3, 4); fun = (CORE_ADDR) read_memory_integer (fun & ~0x3, 4);
} }
else
{
/* FUN could be either an export stub, or the real address of a
function in a shared library.
To call this function we need to get the GOT/DP value for the target
function. Do this by calling shared library support routines in
somsolib.c. Once the GOT value is in %r19 we can call the procedure
in the normal fashion. */
write_register (19, som_solib_get_got_by_pc (fun));
}
/* If we are calling an import stub (eg calling into a dynamic library) /* If we are calling an import stub (eg calling into a dynamic library)
then have sr4export call the magic __d_plt_call routine which is linked then have sr4export call the magic __d_plt_call routine which is linked

25
gdb/somsolib.c
View file

@ -43,8 +43,6 @@ and by Cygnus Support. */
* Do we need/want a command to load a shared library? * Do we need/want a command to load a shared library?
* Test attaching to running dynamically linked code.
* Support for hpux8 dynamic linker. * Support for hpux8 dynamic linker.
* Support for tracking user calls to dld_load, dld_unload. */ * Support for tracking user calls to dld_load, dld_unload. */
@ -544,6 +542,29 @@ som_solib_create_inferior_hook()
som_solib_add ((char *) 0, 0, (struct target_ops *) 0); som_solib_add ((char *) 0, 0, (struct target_ops *) 0);
} }
/* Return the GOT value for the shared library in which ADDR belongs. If
ADDR isn't in any known shared library, return zero. */
CORE_ADDR
som_solib_get_got_by_pc (addr)
CORE_ADDR addr;
{
struct so_list *so_list = so_list_head;
CORE_ADDR got_value = 0;
while (so_list)
{
if (so_list->som_solib.text_addr <= addr
&& so_list->som_solib.text_end > addr)
{
got_value = so_list->som_solib.got_value;
break;
}
so_list = so_list->next;
}
return got_value;
}
/* Dump information about all the currently loaded shared libraries. */ /* Dump information about all the currently loaded shared libraries. */
static void static void

3
gdb/somsolib.h
View file

@ -32,6 +32,9 @@ struct target_ops;
extern void extern void
som_solib_add PARAMS ((char *, int, struct target_ops *)); som_solib_add PARAMS ((char *, int, struct target_ops *));
extern CORE_ADDR
som_solib_get_got_by_pc PARAMS ((CORE_ADDR));
/* Function to be called when the inferior starts up, to discover the names /* Function to be called when the inferior starts up, to discover the names
of shared libraries that are dynamically linked, the base addresses to of shared libraries that are dynamically linked, the base addresses to
which they are linked, and sufficient information to read in their symbols which they are linked, and sufficient information to read in their symbols