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/* v850 specific, C compiler specific functions.
Copyright (C) 2000-2020 Free Software Foundation, Inc.
Contributed by Jeff Law (law@cygnus.com).
This file is part of GCC.
GCC 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 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#define IN_TARGET_CODE 1
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "stringpool.h"
#include "diagnostic-core.h"
#include "attribs.h"
#include "c-family/c-pragma.h"
#ifndef streq
#define streq(a,b) (strcmp (a, b) == 0)
#endif
static int pop_data_area (v850_data_area);
static int push_data_area (v850_data_area);
static void mark_current_function_as_interrupt (void);
/* Push a data area onto the stack. */
static int
push_data_area (v850_data_area data_area)
{
data_area_stack_element * elem;
elem = (data_area_stack_element *) xmalloc (sizeof (* elem));
if (elem == NULL)
return 0;
elem->prev = data_area_stack;
elem->data_area = data_area;
data_area_stack = elem;
return 1;
}
/* Remove a data area from the stack. */
static int
pop_data_area (v850_data_area data_area)
{
if (data_area_stack == NULL)
warning (OPT_Wpragmas, "#pragma GHS endXXXX found without "
"previous startXXX");
else if (data_area != data_area_stack->data_area)
warning (OPT_Wpragmas, "#pragma GHS endXXX does not match "
"previous startXXX");
else
{
data_area_stack_element * elem;
elem = data_area_stack;
data_area_stack = data_area_stack->prev;
free (elem);
return 1;
}
return 0;
}
/* Set the machine specific 'interrupt' attribute on the current function. */
static void
mark_current_function_as_interrupt (void)
{
tree name;
if (current_function_decl == NULL_TREE)
{
warning (0, "cannot set interrupt attribute: no current function");
return;
}
name = get_identifier ("interrupt");
if (name == NULL_TREE || TREE_CODE (name) != IDENTIFIER_NODE)
{
warning (0, "cannot set interrupt attribute: no such identifier");
return;
}
decl_attributes (&current_function_decl,
tree_cons (name, NULL_TREE, NULL_TREE), 0);
}
/* Support for GHS pragmata. */
void
ghs_pragma_section (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
int repeat = 0;
/* #pragma ghs section [name = alias [, name = alias [, ...]]] */
do
{
tree x;
enum cpp_ttype type;
tree sect_ident;
const char *sect, *alias;
enum GHS_section_kind kind;
type = pragma_lex (&x);
if (type == CPP_EOF && !repeat)
goto reset;
else if (type == CPP_NAME)
{
sect_ident = x;
sect = IDENTIFIER_POINTER (sect_ident);
}
else
goto bad;
repeat = 0;
if (pragma_lex (&x) != CPP_EQ)
goto bad;
if (pragma_lex (&x) != CPP_NAME)
goto bad;
alias = IDENTIFIER_POINTER (x);
type = pragma_lex (&x);
if (type == CPP_COMMA)
repeat = 1;
else if (type != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs section");
if (streq (sect, "data")) kind = GHS_SECTION_KIND_DATA;
else if (streq (sect, "text")) kind = GHS_SECTION_KIND_TEXT;
else if (streq (sect, "rodata")) kind = GHS_SECTION_KIND_RODATA;
else if (streq (sect, "const")) kind = GHS_SECTION_KIND_RODATA;
else if (streq (sect, "rosdata")) kind = GHS_SECTION_KIND_ROSDATA;
else if (streq (sect, "rozdata")) kind = GHS_SECTION_KIND_ROZDATA;
else if (streq (sect, "sdata")) kind = GHS_SECTION_KIND_SDATA;
else if (streq (sect, "tdata")) kind = GHS_SECTION_KIND_TDATA;
else if (streq (sect, "zdata")) kind = GHS_SECTION_KIND_ZDATA;
/* According to GHS beta documentation, the following should not be
allowed! */
else if (streq (sect, "bss")) kind = GHS_SECTION_KIND_BSS;
else if (streq (sect, "zbss")) kind = GHS_SECTION_KIND_ZDATA;
else
{
warning (0, "unrecognized section name %qE", sect_ident);
return;
}
if (streq (alias, "default"))
GHS_current_section_names [kind] = NULL;
else
GHS_current_section_names [kind] = alias;
}
while (repeat);
return;
bad:
warning (OPT_Wpragmas, "malformed #pragma ghs section");
return;
reset:
/* #pragma ghs section \n: Reset all section names back to their defaults. */
{
int i;
for (i = COUNT_OF_GHS_SECTION_KINDS; i--;)
GHS_current_section_names [i] = NULL;
}
}
void
ghs_pragma_interrupt (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
tree x;
if (pragma_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs interrupt");
mark_current_function_as_interrupt ();
}
void
ghs_pragma_starttda (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
tree x;
if (pragma_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs starttda");
push_data_area (DATA_AREA_TDA);
}
void
ghs_pragma_startsda (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
tree x;
if (pragma_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs startsda");
push_data_area (DATA_AREA_SDA);
}
void
ghs_pragma_startzda (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
tree x;
if (pragma_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs startzda");
push_data_area (DATA_AREA_ZDA);
}
void
ghs_pragma_endtda (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
tree x;
if (pragma_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs endtda");
pop_data_area (DATA_AREA_TDA);
}
void
ghs_pragma_endsda (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
tree x;
if (pragma_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs endsda");
pop_data_area (DATA_AREA_SDA);
}
void
ghs_pragma_endzda (cpp_reader * pfile ATTRIBUTE_UNUSED)
{
tree x;
if (pragma_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of #pragma ghs endzda");
pop_data_area (DATA_AREA_ZDA);
}