2 Copyright (C) 2004, 2007 Free Software Foundation, Inc.
3 Contributed by Red Hat, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
24 #include "coretypes.h"
31 #include "hard-reg-set.h"
33 #include "m32c-protos.h"
35 #define MAX_RECOG_OPERANDS 10
39 /* Implements the "GCC memregs" pragma. This pragma takes only an
40 integer, and is semantically identical to the -memregs= command
41 line option. The only catch is, the programmer should only use
42 this pragma at the beginning of the file (preferably, in some
43 project-wide header) to avoid ABI changes related to changing the
44 list of available "registers". */
46 m32c_pragma_memregs (cpp_reader * reader ATTRIBUTE_UNUSED)
52 static char new_number[3];
54 type = pragma_lex (&val);
55 if (type == CPP_NUMBER)
57 if (host_integerp (val, 1))
59 i = tree_low_cst (val, 1);
61 type = pragma_lex (&val);
63 warning (0, "junk at end of #pragma GCC memregs [0..16]");
65 if (0 <= i && i <= 16)
67 if (!ok_to_change_target_memregs)
70 "#pragma GCC memregs must precede any function decls");
73 new_number[0] = (i / 10) + '0';
74 new_number[1] = (i % 10) + '0';
76 target_memregs = new_number;
77 m32c_conditional_register_usage ();
81 warning (0, "#pragma GCC memregs takes a number [0..16]");
88 error ("#pragma GCC memregs takes a number [0..16]");
91 /* Implements REGISTER_TARGET_PRAGMAS. */
93 m32c_register_pragmas (void)
95 c_register_pragma ("GCC", "memregs", m32c_pragma_memregs);