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pascal calls!

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This commit is contained in:
Wolfgang Thaller 2014-09-22 01:27:49 +02:00
parent 197178056d
commit a73165f37f
1 changed files with 59 additions and 8 deletions
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67
gcc/gcc/calls.c
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@ -131,7 +131,9 @@ static int stack_arg_under_construction;
static void emit_call_1 (rtx, tree, tree, tree, HOST_WIDE_INT, HOST_WIDE_INT,
HOST_WIDE_INT, rtx, rtx, int, rtx, int,
cumulative_args_t);
cumulative_args_t,
int is_pascal,
enum machine_mode pascal_return_mode);
static void precompute_register_parameters (int, struct arg_data *, int *);
static int store_one_arg (struct arg_data *, rtx, int, int, int);
static void store_unaligned_arguments_into_pseudos (struct arg_data *, int);
@ -144,7 +146,7 @@ static void initialize_argument_information (int, struct arg_data *,
tree, tree,
tree, tree, cumulative_args_t, int,
rtx *, int *, int *, int *,
bool *, bool);
bool *, bool, bool);
static void compute_argument_addresses (struct arg_data *, rtx, int);
static rtx rtx_for_function_call (tree, tree);
static void load_register_parameters (struct arg_data *, int, rtx *, int,
@ -271,7 +273,10 @@ emit_call_1 (rtx funexp, tree fntree ATTRIBUTE_UNUSED, tree fndecl ATTRIBUTE_UNU
HOST_WIDE_INT struct_value_size ATTRIBUTE_UNUSED,
rtx next_arg_reg ATTRIBUTE_UNUSED, rtx valreg,
int old_inhibit_defer_pop, rtx call_fusage, int ecf_flags,
cumulative_args_t args_so_far ATTRIBUTE_UNUSED)
cumulative_args_t args_so_far ATTRIBUTE_UNUSED,
int is_pascal,
enum machine_mode pascal_return_mode)
{
rtx rounded_stack_size_rtx = GEN_INT (rounded_stack_size);
rtx call_insn, call, funmem;
@ -465,6 +470,25 @@ emit_call_1 (rtx funexp, tree fntree ATTRIBUTE_UNUSED, tree fndecl ATTRIBUTE_UNU
else if (!ACCUMULATE_OUTGOING_ARGS && (ecf_flags & ECF_NORETURN) != 0)
add_reg_note (call_insn, REG_ARGS_SIZE, GEN_INT (stack_pointer_delta));
if (is_pascal)
{
if (valreg)
emit_move_insn(valreg,
gen_rtx_MEM( GET_MODE (valreg),
#ifdef HAVE_POST_INCREMENT
gen_rtx_POST_INC( Pmode,
stack_pointer_rtx)
#else
gen_rtx_PLUS( Pmode,
gen_rtx_CONST_INT( Pmode, 1),
stack_pointer_rtx)
#endif
));
}
if (!ACCUMULATE_OUTGOING_ARGS)
{
/* If returning from the subroutine does not automatically pop the args,
@ -1113,7 +1137,8 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
int reg_parm_stack_space,
rtx *old_stack_level, int *old_pending_adj,
int *must_preallocate, int *ecf_flags,
bool *may_tailcall, bool call_from_thunk_p)
bool *may_tailcall, bool call_from_thunk_p,
bool reverse_args)
{
CUMULATIVE_ARGS *args_so_far_pnt = get_cumulative_args (args_so_far);
location_t loc = EXPR_LOCATION (exp);
@ -1132,7 +1157,7 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED,
We fill up ARGS from the front or from the back if necessary
so that in any case the first arg to be pushed ends up at the front. */
if (PUSH_ARGS_REVERSED)
if (PUSH_ARGS_REVERSED != reverse_args)
{
i = num_actuals - 1, inc = -1;
/* In this case, must reverse order of args
@ -2332,6 +2357,13 @@ expand_call (tree exp, rtx target, int ignore)
unsigned HOST_WIDE_INT preferred_unit_stack_boundary;
/* The static chain value to use for this call. */
rtx static_chain_value;
/* Nonzero if this is a call to a pascal-declared function. */
int is_pascal = 0 /* ### */;
/* The mode of the value being returned by a pascal-declared function. */
enum machine_mode pascal_return_mode = VOIDmode;
/* See if this is "nothrow" function call. */
if (TREE_NOTHROW (exp))
flags |= ECF_NOTHROW;
@ -2354,6 +2386,10 @@ expand_call (tree exp, rtx target, int ignore)
struct_value = targetm.calls.struct_value_rtx (fntype, 0);
if(lookup_attribute ("pascal", TYPE_ATTRIBUTES (fntype)))
is_pascal = 1;
/* Warn if this value is an aggregate type,
regardless of which calling convention we are using for it. */
if (AGGREGATE_TYPE_P (rettype))
@ -2492,6 +2528,19 @@ expand_call (tree exp, rtx target, int ignore)
structure_value_addr_parm = 1;
}
if (is_pascal)
{ /* ### */
int modesize;
pascal_return_mode = TYPE_MODE (TREE_TYPE (funtype));
modesize = GET_MODE_SIZE (pascal_return_mode);
#ifdef PUSH_ROUNDING
modesize = PUSH_ROUNDING (modesize);
#endif
push_block (GEN_INT (modesize), 0, 0);
}
/* Count the arguments and set NUM_ACTUALS. */
num_actuals =
call_expr_nargs (exp) + num_complex_actuals + structure_value_addr_parm;
@ -2558,7 +2607,8 @@ expand_call (tree exp, rtx target, int ignore)
args_so_far, reg_parm_stack_space,
&old_stack_level, &old_pending_adj,
&must_preallocate, &flags,
&try_tail_call, CALL_FROM_THUNK_P (exp));
&try_tail_call, CALL_FROM_THUNK_P (exp),
is_pascal);
if (args_size.var)
must_preallocate = 1;
@ -3189,7 +3239,7 @@ expand_call (tree exp, rtx target, int ignore)
emit_call_1 (funexp, exp, fndecl, funtype, unadjusted_args_size,
adjusted_args_size.constant, struct_value_size,
next_arg_reg, valreg, old_inhibit_defer_pop, call_fusage,
flags, args_so_far);
flags, args_so_far, is_pascal, pascal_return_mode);
/* If the call setup or the call itself overlaps with anything
of the argument setup we probably clobbered our call address.
@ -4216,7 +4266,8 @@ emit_library_call_value_1 (int retval, rtx orgfun, rtx value,
targetm.calls.function_arg (args_so_far,
VOIDmode, void_type_node, true),
valreg,
old_inhibit_defer_pop + 1, call_fusage, flags, args_so_far);
old_inhibit_defer_pop + 1, call_fusage, flags, args_so_far,
0, VOIDmode /*is_pascal, pascal_return_mode*/);
/* Right-shift returned value if necessary. */
if (!pcc_struct_value