/* v850 specific, C compiler specific functions. Copyright (C) 2000-2017 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 . */ #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 (¤t_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); }