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* blockframe.c (find_pc_partial_function): Inhibit mst_trampoline

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symbol special handling when INHIBIT_SUNSOLIB_TRANSFER_TABLE_HACK
	is defined.
	* infrun.c (IN_SOLIB_CALL_TRAMPOLINE): Renamed from
	IN_SOLIB_TRAMPOLINE.  All callers changed.
	(IN_SOLIB_RETURN_TRAMPOLINE): Provide default definition.
	(wait_for_inferior): Handle single stepping through trampolines on
	return paths from shared libraries.
	* config/pa/tm-hppa.h (IN_SOLIB_CALL_TRAMPOLINE): Use
	in_solib_call_trampoline.
	(IN_SOLIB_RETURN_TRAMPOLINE): Use in_solib_return_trampoline.
	(INHIBIT_SUNSOLIB_TRANSFER_TABLE_HACK): Define.
	* hppa-tdep.c (in_solib_call_trampoline): New function.
	(in_solib_return_trampoline): New function.
This commit is contained in:
Jeff Law
1994-11-24 08:02:01 +00:00
parent b5a37058d4
commit 481faa25ac
6 changed files with 134 additions and 24 deletions
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80
gdb/hppa-tdep.c
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@@ -1574,6 +1574,86 @@ pa_print_fp_reg (i)
}
}
/* Return one if PC is in the call path of a shared library trampoline, else
return zero. */
in_solib_call_trampoline (pc, name)
CORE_ADDR pc;
char *name;
{
struct minimal_symbol *minsym;
struct unwind_table_entry *u;
/* Get the unwind descriptor corresponding to PC, return zero
if no unwind was found. */
u = find_unwind_entry (pc);
if (!u)
return 0;
/* If this isn't a linker stub, then return now. */
if (u->stub_type != IMPORT
&& u->stub_type != EXPORT)
return 0;
/* The call and return path execute the same instructions within
an IMPORT stub! So an IMPORT stub is both a call and return
trampoline. */
if (u->stub_type == IMPORT)
return 1;
/* The linker may group many EXPORT stubs into one unwind entry. So
lookup the minimal symbol and use that as the beginning of this
particular stub. */
minsym = lookup_minimal_symbol_by_pc (pc);
if (minsym == NULL)
return 0;
/* Export stubs have distinct call and return paths. The first
two instructions are the call path, following four are the
return path. */
return (pc >= SYMBOL_VALUE (minsym) && pc < SYMBOL_VALUE (minsym) + 8);
}
/* Return one if PC is in the return path of a shared library trampoline,
else return zero. */
in_solib_return_trampoline (pc, name)
CORE_ADDR pc;
char *name;
{
struct minimal_symbol *minsym;
struct unwind_table_entry *u;
/* Get the unwind descriptor corresponding to PC, return zero
if no unwind was found. */
u = find_unwind_entry (pc);
if (!u)
return 0;
/* If this isn't a linker stub, then return now. */
if (u->stub_type != IMPORT
&& u->stub_type != EXPORT)
return 0;
/* The call and return path execute the same instructions within
an IMPORT stub! So an IMPORT stub is both a call and return
trampoline. */
if (u->stub_type == IMPORT)
return 1;
/* The linker may group many EXPORT stubs into one unwind entry. So
lookup the minimal symbol and use that as the beginning of this
particular stub. */
minsym = lookup_minimal_symbol_by_pc (pc);
if (minsym == NULL)
return 0;
/* Export stubs have distinct call and return paths. The first
two instructions are the call path, following four are the
return path. */
return (pc >= SYMBOL_VALUE (minsym) + 8 && pc < SYMBOL_VALUE (minsym) + 20);
}
/* Figure out if PC is in a trampoline, and if so find out where
the trampoline will jump to. If not in a trampoline, return zero.