1 /* Intel 80960 specific, C compiler specific functions.
2 Copyright (C) 1992, 1995, 1996, 1997, 1998, 1999, 2000
3 Free Software Foundation, Inc.
4 Contributed by Steven McGeady, Intel Corp.
5 Additional Work by Glenn Colon-Bonet, Jonathan Shapiro, Andy Wilson
6 Converted to GCC 2.0 by Jim Wilson and Michael Tiemann, Cygnus Support.
8 This file is part of GCC.
10 GCC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GCC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GCC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
27 #include "coretypes.h"
36 /* Handle pragmas for compatibility with Intel's compilers. */
38 /* NOTE: ic960 R3.0 pragma align definition:
40 #pragma align [(size)] | (identifier=size[,...])
41 #pragma noalign [(identifier)[,...]]
43 (all parens are optional)
45 - size is [1,2,4,8,16]
46 - noalign means size==1
47 - applies only to component elements of a struct (and union?)
48 - identifier applies to structure tag (only)
49 - missing identifier means next struct
51 - alignment rules for bitfields need more investigation.
53 This implementation only handles the case of no identifiers. */
57 cpp_reader
*pfile ATTRIBUTE_UNUSED
;
63 type
= c_lex (&number
);
64 if (type
== CPP_OPEN_PAREN
)
65 type
= c_lex (&number
);
68 warning ("sorry, not implemented: #pragma align NAME=SIZE");
71 if (type
!= CPP_NUMBER
)
73 warning ("malformed #pragma align - ignored");
77 align
= TREE_INT_CST_LOW (number
);
81 /* Return to last alignment. */
82 align
= i960_last_maxbitalignment
/ 8;
89 i960_last_maxbitalignment
= i960_maxbitalignment
;
90 i960_maxbitalignment
= align
* 8;
94 /* Silently ignore bad values. */
100 i960_pr_noalign (pfile
)
101 cpp_reader
*pfile ATTRIBUTE_UNUSED
;
106 type
= c_lex (&number
);
107 if (type
== CPP_OPEN_PAREN
)
108 type
= c_lex (&number
);
109 if (type
== CPP_NAME
)
111 warning ("sorry, not implemented: #pragma noalign NAME");
115 i960_last_maxbitalignment
= i960_maxbitalignment
;
116 i960_maxbitalignment
= 8;