| /* PRU target specific pragmas |
| Copyright (C) 2015-2021 Free Software Foundation, Inc. |
| Contributed by Dimitar Dimitrov <dimitar@dinux.eu> |
| |
| 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 "alias.h" |
| #include "symtab.h" |
| #include "tree.h" |
| #include "c-family/c-pragma.h" |
| #include "c-family/c-common.h" |
| #include "diagnostic-core.h" |
| #include "cpplib.h" |
| #include "pru-protos.h" |
| |
| |
| /* Implements the "pragma CTABLE_ENTRY" pragma. This pragma takes a |
| CTABLE index and an address, and instructs the compiler that |
| LBCO/SBCO can be used on that base address. |
| |
| WARNING: Only immediate constant addresses are currently supported. */ |
| static void |
| pru_pragma_ctable_entry (cpp_reader * reader ATTRIBUTE_UNUSED) |
| { |
| tree ctable_index, base_addr; |
| enum cpp_ttype type; |
| |
| type = pragma_lex (&ctable_index); |
| if (type == CPP_NUMBER && tree_fits_uhwi_p (ctable_index)) |
| { |
| type = pragma_lex (&base_addr); |
| if (type == CPP_NUMBER && tree_fits_uhwi_p (base_addr)) |
| { |
| unsigned HOST_WIDE_INT i = tree_to_uhwi (ctable_index); |
| unsigned HOST_WIDE_INT base = tree_to_uhwi (base_addr); |
| |
| type = pragma_lex (&base_addr); |
| if (type != CPP_EOF) |
| error ("junk at end of %<#pragma CTABLE_ENTRY%>"); |
| else if (i >= ARRAY_SIZE (pru_ctable)) |
| error ("%<CTABLE_ENTRY%> index %" HOST_WIDE_INT_PRINT "d" |
| " is not valid", i); |
| else if (pru_ctable[i].valid && pru_ctable[i].base != base) |
| error ("redefinition of %<CTABLE_ENTRY " |
| "%" HOST_WIDE_INT_PRINT "d%>", i); |
| else |
| { |
| if (base & 0xff) |
| warning (0, "%<CTABLE_ENTRY%> base address is not " |
| "a multiple of 256"); |
| pru_ctable[i].base = base; |
| pru_ctable[i].valid = true; |
| } |
| return; |
| } |
| } |
| error ("malformed %<#pragma CTABLE_ENTRY%> variable address"); |
| } |
| |
| /* Implements REGISTER_TARGET_PRAGMAS. */ |
| void |
| pru_register_pragmas (void) |
| { |
| c_register_pragma (NULL, "ctable_entry", pru_pragma_ctable_entry); |
| c_register_pragma (NULL, "CTABLE_ENTRY", pru_pragma_ctable_entry); |
| |
| c_register_addr_space ("__regio_symbol", ADDR_SPACE_REGIO); |
| } |