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a5c76ee6 | 1 | /* Subroutines for the C front end on the POWER and PowerPC architectures. |
5de601cf | 2 | Copyright (C) 2002, 2003 |
a5c76ee6 ZW |
3 | Free Software Foundation, Inc. |
4 | ||
5 | Contributed by Zack Weinberg <zack@codesourcery.com> | |
6 | ||
5de601cf | 7 | This file is part of GCC. |
a5c76ee6 | 8 | |
5de601cf NC |
9 | GCC is free software; you can redistribute it and/or modify it |
10 | under the terms of the GNU General Public License as published | |
11 | by the Free Software Foundation; either version 2, or (at your | |
12 | option) any later version. | |
a5c76ee6 | 13 | |
5de601cf NC |
14 | GCC is distributed in the hope that it will be useful, but WITHOUT |
15 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
16 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
17 | License for more details. | |
a5c76ee6 | 18 | |
5de601cf NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with GCC; see the file COPYING. If not, write to the | |
21 | Free Software Foundation, 59 Temple Place - Suite 330, Boston, | |
22 | MA 02111-1307, USA. */ | |
a5c76ee6 ZW |
23 | |
24 | #include "config.h" | |
25 | #include "system.h" | |
4977bab6 ZW |
26 | #include "coretypes.h" |
27 | #include "tm.h" | |
a5c76ee6 ZW |
28 | #include "cpplib.h" |
29 | #include "tree.h" | |
81a75f0f | 30 | #include "c-pragma.h" |
a5c76ee6 ZW |
31 | #include "errors.h" |
32 | #include "tm_p.h" | |
33 | ||
34 | /* Handle the machine specific pragma longcall. Its syntax is | |
35 | ||
36 | # pragma longcall ( TOGGLE ) | |
37 | ||
38 | where TOGGLE is either 0 or 1. | |
39 | ||
40 | rs6000_default_long_calls is set to the value of TOGGLE, changing | |
41 | whether or not new function declarations receive a longcall | |
42 | attribute by default. */ | |
43 | ||
5de601cf | 44 | #define SYNTAX_ERROR(msgid) do { \ |
a5c76ee6 ZW |
45 | warning (msgid); \ |
46 | warning ("ignoring malformed #pragma longcall"); \ | |
47 | return; \ | |
48 | } while (0) | |
49 | ||
50 | void | |
a2369ed3 | 51 | rs6000_pragma_longcall (cpp_reader *pfile ATTRIBUTE_UNUSED) |
a5c76ee6 ZW |
52 | { |
53 | tree x, n; | |
54 | ||
55 | /* If we get here, generic code has already scanned the directive | |
56 | leader and the word "longcall". */ | |
57 | ||
58 | if (c_lex (&x) != CPP_OPEN_PAREN) | |
59 | SYNTAX_ERROR ("missing open paren"); | |
60 | if (c_lex (&n) != CPP_NUMBER) | |
61 | SYNTAX_ERROR ("missing number"); | |
62 | if (c_lex (&x) != CPP_CLOSE_PAREN) | |
63 | SYNTAX_ERROR ("missing close paren"); | |
64 | ||
65 | if (n != integer_zero_node && n != integer_one_node) | |
66 | SYNTAX_ERROR ("number must be 0 or 1"); | |
67 | ||
68 | if (c_lex (&x) != CPP_EOF) | |
69 | warning ("junk at end of #pragma longcall"); | |
70 | ||
71 | rs6000_default_long_calls = (n == integer_one_node); | |
72 | } | |
4c4eb375 GK |
73 | |
74 | /* Handle defining many CPP flags based on TARGET_xxx. As a general | |
75 | policy, rather than trying to guess what flags a user might want a | |
76 | #define for, it's better to define a flag for everything. */ | |
77 | ||
78 | #define builtin_define(TXT) cpp_define (pfile, TXT) | |
79 | #define builtin_assert(TXT) cpp_assert (pfile, TXT) | |
80 | ||
81 | void | |
a2369ed3 | 82 | rs6000_cpu_cpp_builtins (cpp_reader *pfile) |
4c4eb375 GK |
83 | { |
84 | if (TARGET_POWER2) | |
85 | builtin_define ("_ARCH_PWR2"); | |
86 | else if (TARGET_POWER) | |
87 | builtin_define ("_ARCH_PWR"); | |
88 | if (TARGET_POWERPC) | |
89 | builtin_define ("_ARCH_PPC"); | |
90 | if (TARGET_POWERPC64) | |
91 | builtin_define ("_ARCH_PPC64"); | |
92 | if (! TARGET_POWER && ! TARGET_POWER2 && ! TARGET_POWERPC) | |
93 | builtin_define ("_ARCH_COM"); | |
94 | if (TARGET_ALTIVEC) | |
95 | builtin_define ("__ALTIVEC__"); | |
a3170dc6 AH |
96 | if (TARGET_SPE) |
97 | builtin_define ("__SPE__"); | |
4c4eb375 GK |
98 | if (TARGET_SOFT_FLOAT) |
99 | builtin_define ("_SOFT_FLOAT"); | |
b4d330e1 DE |
100 | /* Used by lwarx/stwcx. errata work-around. */ |
101 | if (rs6000_cpu == PROCESSOR_PPC405) | |
102 | builtin_define ("__PPC405__"); | |
647d340d JT |
103 | |
104 | /* May be overridden by target configuration. */ | |
105 | RS6000_CPU_CPP_ENDIAN_BUILTINS(); | |
106 | ||
4c4eb375 GK |
107 | if (TARGET_LONG_DOUBLE_128) |
108 | builtin_define ("__LONG_DOUBLE_128__"); | |
109 | ||
110 | switch (rs6000_current_abi) | |
111 | { | |
112 | case ABI_V4: | |
113 | builtin_define ("_CALL_SYSV"); | |
114 | break; | |
4c4eb375 GK |
115 | case ABI_AIX: |
116 | builtin_define ("_CALL_AIXDESC"); | |
117 | builtin_define ("_CALL_AIX"); | |
118 | break; | |
119 | case ABI_DARWIN: | |
120 | builtin_define ("_CALL_DARWIN"); | |
121 | break; | |
b4d330e1 DE |
122 | default: |
123 | break; | |
4c4eb375 GK |
124 | } |
125 | } |