/* Perform an inferior function call, for GDB, the GNU debugger.
Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
- 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+ 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+ 2008 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdb_string.h"
#include "infcall.h"
#include "dummy-frame.h"
+#include "ada-lang.h"
/* NOTE: cagney/2003-04-16: What's the future of this code?
/* Perform the standard coercions that are specified
- for arguments to be passed to C functions.
+ for arguments to be passed to C or Ada functions.
If PARAM_TYPE is non-NULL, it is the expected parameter type.
- IS_PROTOTYPED is non-zero if the function declaration is prototyped. */
+ IS_PROTOTYPED is non-zero if the function declaration is prototyped.
+ SP is the stack pointer were additional data can be pushed (updating
+ its value as needed). */
static struct value *
value_arg_coerce (struct value *arg, struct type *param_type,
- int is_prototyped)
+ int is_prototyped, CORE_ADDR *sp)
{
struct type *arg_type = check_typedef (value_type (arg));
struct type *type
= param_type ? check_typedef (param_type) : arg_type;
+ /* Perform any Ada-specific coercion first. */
+ if (current_language->la_language == language_ada)
+ arg = ada_convert_actual (arg, type, sp);
+
switch (TYPE_CODE (type))
{
case TYPE_CODE_REF:
static CORE_ADDR
generic_push_dummy_code (struct gdbarch *gdbarch,
- CORE_ADDR sp, CORE_ADDR funaddr, int using_gcc,
+ CORE_ADDR sp, CORE_ADDR funaddr,
struct value **args, int nargs,
struct type *value_type,
CORE_ADDR *real_pc, CORE_ADDR *bp_addr,
static CORE_ADDR
push_dummy_code (struct gdbarch *gdbarch,
- CORE_ADDR sp, CORE_ADDR funaddr, int using_gcc,
+ CORE_ADDR sp, CORE_ADDR funaddr,
struct value **args, int nargs,
struct type *value_type,
CORE_ADDR *real_pc, CORE_ADDR *bp_addr,
struct regcache *regcache)
{
if (gdbarch_push_dummy_code_p (gdbarch))
- return gdbarch_push_dummy_code (gdbarch, sp, funaddr, using_gcc,
+ return gdbarch_push_dummy_code (gdbarch, sp, funaddr,
args, nargs, value_type, real_pc, bp_addr,
regcache);
else
- return generic_push_dummy_code (gdbarch, sp, funaddr, using_gcc,
+ return generic_push_dummy_code (gdbarch, sp, funaddr,
args, nargs, value_type, real_pc, bp_addr,
regcache);
}
struct inferior_status *inf_status;
struct cleanup *inf_status_cleanup;
CORE_ADDR funaddr;
- int using_gcc; /* Set to version of gcc in use, or zero if not gcc */
CORE_ADDR real_pc;
struct type *ftype = check_typedef (value_type (function));
CORE_ADDR bp_addr;
struct cleanup *caller_regcache_cleanup;
struct frame_id dummy_id;
struct cleanup *args_cleanup;
+ struct frame_info *frame;
+ struct gdbarch *gdbarch;
if (TYPE_CODE (ftype) == TYPE_CODE_PTR)
ftype = check_typedef (TYPE_TARGET_TYPE (ftype));
if (!target_has_execution)
noprocess ();
- if (!gdbarch_push_dummy_call_p (current_gdbarch))
+ frame = get_current_frame ();
+ gdbarch = get_frame_arch (frame);
+
+ if (!gdbarch_push_dummy_call_p (gdbarch))
error (_("This target does not support function calls"));
/* Create a cleanup chain that contains the retbuf (buffer
containing the register values). This chain is create BEFORE the
inf_status chain so that the inferior status can cleaned up
(restored or discarded) without having the retbuf freed. */
- retbuf = regcache_xmalloc (current_gdbarch);
+ retbuf = regcache_xmalloc (gdbarch);
retbuf_cleanup = make_cleanup_regcache_xfree (retbuf);
/* A cleanup for the inferior status. Create this AFTER the retbuf
callee returns. To allow nested calls the registers are (further
down) pushed onto a dummy frame stack. Include a cleanup (which
is tossed once the regcache has been pushed). */
- caller_regcache = frame_save_as_regcache (get_current_frame ());
+ caller_regcache = frame_save_as_regcache (frame);
caller_regcache_cleanup = make_cleanup_regcache_xfree (caller_regcache);
/* Ensure that the initial SP is correctly aligned. */
{
- CORE_ADDR old_sp = get_frame_sp (get_current_frame ());
- if (gdbarch_frame_align_p (current_gdbarch))
+ CORE_ADDR old_sp = get_frame_sp (frame);
+ if (gdbarch_frame_align_p (gdbarch))
{
- sp = gdbarch_frame_align (current_gdbarch, old_sp);
+ sp = gdbarch_frame_align (gdbarch, old_sp);
/* NOTE: cagney/2003-08-13: Skip the "red zone". For some
ABIs, a function can use memory beyond the inner most stack
address. AMD64 called that region the "red zone". Skip at
least the "red zone" size before allocating any space on
the stack. */
- if (gdbarch_inner_than (current_gdbarch, 1, 2))
- sp -= gdbarch_frame_red_zone_size (current_gdbarch);
+ if (gdbarch_inner_than (gdbarch, 1, 2))
+ sp -= gdbarch_frame_red_zone_size (gdbarch);
else
- sp += gdbarch_frame_red_zone_size (current_gdbarch);
+ sp += gdbarch_frame_red_zone_size (gdbarch);
/* Still aligned? */
- gdb_assert (sp == gdbarch_frame_align (current_gdbarch, sp));
+ gdb_assert (sp == gdbarch_frame_align (gdbarch, sp));
/* NOTE: cagney/2002-09-18:
On a RISC architecture, a void parameterless generic dummy
to pay :-). */
if (sp == old_sp)
{
- if (gdbarch_inner_than (current_gdbarch, 1, 2))
+ if (gdbarch_inner_than (gdbarch, 1, 2))
/* Stack grows down. */
- sp = gdbarch_frame_align (current_gdbarch, old_sp - 1);
+ sp = gdbarch_frame_align (gdbarch, old_sp - 1);
else
/* Stack grows up. */
- sp = gdbarch_frame_align (current_gdbarch, old_sp + 1);
+ sp = gdbarch_frame_align (gdbarch, old_sp + 1);
}
- gdb_assert ((gdbarch_inner_than (current_gdbarch, 1, 2)
+ gdb_assert ((gdbarch_inner_than (gdbarch, 1, 2)
&& sp <= old_sp)
- || (gdbarch_inner_than (current_gdbarch, 2, 1)
+ || (gdbarch_inner_than (gdbarch, 2, 1)
&& sp >= old_sp));
}
else
funaddr = find_function_addr (function, &values_type);
CHECK_TYPEDEF (values_type);
- {
- struct block *b = block_for_pc (funaddr);
- /* If compiled without -g, assume GCC 2. */
- using_gcc = (b == NULL ? 2 : BLOCK_GCC_COMPILED (b));
- }
-
/* Are we returning a value using a structure return (passing a
hidden argument pointing to storage) or a normal value return?
There are two cases: language-mandated structure return and
}
else
{
- struct_return = using_struct_return (values_type, using_gcc);
+ struct_return = using_struct_return (values_type);
target_values_type = values_type;
}
/* The actual breakpoint (at BP_ADDR) is inserted separatly so there
is no need to write that out. */
- switch (gdbarch_call_dummy_location (current_gdbarch))
+ switch (gdbarch_call_dummy_location (gdbarch))
{
case ON_STACK:
/* "dummy_addr" is here just to keep old targets happy. New
targets return that same information via "sp" and "bp_addr". */
- if (gdbarch_inner_than (current_gdbarch, 1, 2))
+ if (gdbarch_inner_than (gdbarch, 1, 2))
{
- sp = push_dummy_code (current_gdbarch, sp, funaddr,
- using_gcc, args, nargs, target_values_type,
+ sp = push_dummy_code (gdbarch, sp, funaddr,
+ args, nargs, target_values_type,
&real_pc, &bp_addr, get_current_regcache ());
dummy_addr = sp;
}
else
{
dummy_addr = sp;
- sp = push_dummy_code (current_gdbarch, sp, funaddr,
- using_gcc, args, nargs, target_values_type,
+ sp = push_dummy_code (gdbarch, sp, funaddr,
+ args, nargs, target_values_type,
&real_pc, &bp_addr, get_current_regcache ());
}
break;
dummy_addr = entry_point_address ();
/* Make certain that the address points at real code, and not a
function descriptor. */
- dummy_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
+ dummy_addr = gdbarch_convert_from_func_ptr_addr (gdbarch,
dummy_addr,
¤t_target);
/* A call dummy always consists of just a single breakpoint, so
dummy_addr = entry_point_address ();
/* Make certain that the address points at real code, and not
a function descriptor. */
- dummy_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch,
+ dummy_addr = gdbarch_convert_from_func_ptr_addr (gdbarch,
dummy_addr,
¤t_target);
/* A call dummy always consists of just a single breakpoint,
else
param_type = NULL;
- args[i] = value_arg_coerce (args[i], param_type, prototyped);
+ args[i] = value_arg_coerce (args[i], param_type, prototyped, &sp);
if (param_type != NULL && language_pass_by_reference (param_type))
args[i] = value_addr (args[i]);
-
- /* elz: this code is to handle the case in which the function
- to be called has a pointer to function as parameter and the
- corresponding actual argument is the address of a function
- and not a pointer to function variable. In aCC compiled
- code, the calls through pointers to functions (in the body
- of the function called by hand) are made via
- $$dyncall_external which requires some registers setting,
- this is taken care of if we call via a function pointer
- variable, but not via a function address. In cc this is
- not a problem. */
-
- if (using_gcc == 0)
- {
- if (param_type != NULL && TYPE_CODE (ftype) != TYPE_CODE_METHOD)
- {
- /* if this parameter is a pointer to function. */
- if (TYPE_CODE (param_type) == TYPE_CODE_PTR)
- if (TYPE_CODE (TYPE_TARGET_TYPE (param_type)) == TYPE_CODE_FUNC)
- /* elz: FIXME here should go the test about the
- compiler used to compile the target. We want to
- issue the error message only if the compiler
- used was HP's aCC. If we used HP's cc, then
- there is no problem and no need to return at
- this point. */
- /* Go see if the actual parameter is a variable of
- type pointer to function or just a function. */
- if (VALUE_LVAL (args[i]) == not_lval)
- {
- char *arg_name;
- /* NOTE: cagney/2005-01-02: THIS IS BOGUS. */
- if (find_pc_partial_function ((CORE_ADDR) value_contents (args[i])[0], &arg_name, NULL, NULL))
- error (_("\
-You cannot use function <%s> as argument. \n\
-You must use a pointer to function type variable. Command ignored."), arg_name);
- }
- }
- }
}
}
if (struct_return || lang_struct_return)
{
int len = TYPE_LENGTH (values_type);
- if (gdbarch_inner_than (current_gdbarch, 1, 2))
+ if (gdbarch_inner_than (gdbarch, 1, 2))
{
/* Stack grows downward. Align STRUCT_ADDR and SP after
making space for the return value. */
sp -= len;
- if (gdbarch_frame_align_p (current_gdbarch))
- sp = gdbarch_frame_align (current_gdbarch, sp);
+ if (gdbarch_frame_align_p (gdbarch))
+ sp = gdbarch_frame_align (gdbarch, sp);
struct_addr = sp;
}
else
{
/* Stack grows upward. Align the frame, allocate space, and
then again, re-align the frame??? */
- if (gdbarch_frame_align_p (current_gdbarch))
- sp = gdbarch_frame_align (current_gdbarch, sp);
+ if (gdbarch_frame_align_p (gdbarch))
+ sp = gdbarch_frame_align (gdbarch, sp);
struct_addr = sp;
sp += len;
- if (gdbarch_frame_align_p (current_gdbarch))
- sp = gdbarch_frame_align (current_gdbarch, sp);
+ if (gdbarch_frame_align_p (gdbarch))
+ sp = gdbarch_frame_align (gdbarch, sp);
}
}
/* Create the dummy stack frame. Pass in the call dummy address as,
presumably, the ABI code knows where, in the call dummy, the
return address should be pointed. */
- sp = gdbarch_push_dummy_call (current_gdbarch, function,
- get_current_regcache (), bp_addr, nargs, args,
+ sp = gdbarch_push_dummy_call (gdbarch, function, get_current_regcache (),
+ bp_addr, nargs, args,
sp, struct_return, struct_addr);
do_cleanups (args_cleanup);
}
else
{
- struct gdbarch *arch = current_gdbarch;
-
- switch (gdbarch_return_value (arch, target_values_type, NULL, NULL, NULL))
+ switch (gdbarch_return_value (gdbarch, target_values_type,
+ NULL, NULL, NULL))
{
case RETURN_VALUE_REGISTER_CONVENTION:
case RETURN_VALUE_ABI_RETURNS_ADDRESS:
case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
retval = allocate_value (values_type);
- gdbarch_return_value (current_gdbarch, values_type, retbuf,
+ gdbarch_return_value (gdbarch, values_type, retbuf,
value_contents_raw (retval), NULL);
break;
case RETURN_VALUE_STRUCT_CONVENTION:
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