| /* M32C Pragma support |
| Copyright (C) 2004 Free Software Foundation, Inc. |
| Contributed by Red Hat, Inc. |
| |
| 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 2, 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 COPYING. If not, write to |
| the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
| Boston, MA 02110-1301, USA. */ |
| |
| #include <stdio.h> |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| #include "tree.h" |
| #include "rtl.h" |
| #include "toplev.h" |
| #include "c-pragma.h" |
| #include "cpplib.h" |
| #include "hard-reg-set.h" |
| #include "output.h" |
| #include "m32c-protos.h" |
| #include "function.h" |
| #define MAX_RECOG_OPERANDS 10 |
| #include "reload.h" |
| #include "target.h" |
| |
| /* Implements the "GCC memregs" pragma. This pragma takes only an |
| integer, and is semantically identical to the -memregs= command |
| line option. The only catch is, the programmer should only use |
| this pragma at the beginning of the file (preferably, in some |
| project-wide header) to avoid ABI changes related to changing the |
| list of available "registers". */ |
| static void |
| m32c_pragma_memregs (cpp_reader * reader ATTRIBUTE_UNUSED) |
| { |
| /* on off */ |
| tree val; |
| enum cpp_ttype type; |
| HOST_WIDE_INT i; |
| static char new_number[3]; |
| |
| type = pragma_lex (&val); |
| if (type == CPP_NUMBER) |
| { |
| if (host_integerp (val, 1)) |
| { |
| i = tree_low_cst (val, 1); |
| |
| type = pragma_lex (&val); |
| if (type != CPP_EOF) |
| warning (0, "junk at end of #pragma GCC memregs [0..16]"); |
| |
| if (0 <= i && i <= 16) |
| { |
| if (!ok_to_change_target_memregs) |
| { |
| warning (0, |
| "#pragma GCC memregs must precede any function decls"); |
| return; |
| } |
| new_number[0] = (i / 10) + '0'; |
| new_number[1] = (i % 10) + '0'; |
| new_number[2] = 0; |
| target_memregs = new_number; |
| m32c_conditional_register_usage (); |
| } |
| else |
| { |
| warning (0, "#pragma GCC memregs takes a number [0..16]"); |
| } |
| |
| return; |
| } |
| } |
| |
| error ("#pragma GCC memregs takes a number [0..16]"); |
| } |
| |
| /* Implements REGISTER_TARGET_PRAGMAS. */ |
| void |
| m32c_register_pragmas (void) |
| { |
| c_register_pragma ("GCC", "memregs", m32c_pragma_memregs); |
| } |