Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/m32c/m32c-pragma.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | f6334be47118 |
children | 84e7813d76e9 |
rev | line source |
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0 | 1 /* M32C Pragma support |
111 | 2 Copyright (C) 2004-2017 Free Software Foundation, Inc. |
0 | 3 Contributed by Red Hat, Inc. |
4 | |
5 This file is part of GCC. | |
6 | |
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) | |
10 any later version. | |
11 | |
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. | |
16 | |
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/>. */ | |
20 | |
21 #include "config.h" | |
22 #include "system.h" | |
23 #include "coretypes.h" | |
24 #include "tm.h" | |
111 | 25 #include "c-family/c-common.h" |
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26 #include "c-family/c-pragma.h" |
0 | 27 #include "m32c-protos.h" |
28 | |
29 /* Implements the "GCC memregs" pragma. This pragma takes only an | |
30 integer, and is semantically identical to the -memregs= command | |
31 line option. The only catch is, the programmer should only use | |
32 this pragma at the beginning of the file (preferably, in some | |
33 project-wide header) to avoid ABI changes related to changing the | |
34 list of available "registers". */ | |
35 static void | |
36 m32c_pragma_memregs (cpp_reader * reader ATTRIBUTE_UNUSED) | |
37 { | |
38 /* on off */ | |
39 tree val; | |
40 enum cpp_ttype type; | |
41 HOST_WIDE_INT i; | |
42 | |
43 type = pragma_lex (&val); | |
44 if (type == CPP_NUMBER) | |
45 { | |
111 | 46 if (tree_fits_uhwi_p (val)) |
0 | 47 { |
111 | 48 i = tree_to_uhwi (val); |
0 | 49 |
50 type = pragma_lex (&val); | |
51 if (type != CPP_EOF) | |
52 warning (0, "junk at end of #pragma GCC memregs [0..16]"); | |
53 | |
54 if (0 <= i && i <= 16) | |
55 { | |
56 if (!ok_to_change_target_memregs) | |
57 { | |
58 warning (0, | |
59 "#pragma GCC memregs must precede any function decls"); | |
60 return; | |
61 } | |
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62 target_memregs = i; |
0 | 63 m32c_conditional_register_usage (); |
64 } | |
65 else | |
66 { | |
67 warning (0, "#pragma GCC memregs takes a number [0..16]"); | |
68 } | |
69 | |
70 return; | |
71 } | |
72 } | |
73 | |
74 error ("#pragma GCC memregs takes a number [0..16]"); | |
75 } | |
76 | |
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77 /* Implements the "pragma ADDRESS" pragma. This pragma takes a |
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78 variable name and an address, and arranges for that variable to be |
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79 "at" that address. The variable is also made volatile. */ |
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80 static void |
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81 m32c_pragma_address (cpp_reader * reader ATTRIBUTE_UNUSED) |
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82 { |
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83 /* on off */ |
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84 tree var, addr; |
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85 enum cpp_ttype type; |
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86 |
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87 type = pragma_lex (&var); |
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88 if (type == CPP_NAME) |
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89 { |
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90 type = pragma_lex (&addr); |
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91 if (type == CPP_NUMBER) |
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92 { |
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93 if (var != error_mark_node) |
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94 { |
111 | 95 unsigned uaddr = tree_to_uhwi (addr); |
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96 m32c_note_pragma_address (IDENTIFIER_POINTER (var), uaddr); |
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97 } |
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98 |
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99 type = pragma_lex (&var); |
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100 if (type != CPP_EOF) |
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101 { |
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102 error ("junk at end of #pragma ADDRESS"); |
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103 } |
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104 return; |
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105 } |
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106 } |
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107 error ("malformed #pragma ADDRESS variable address"); |
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108 } |
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109 |
0 | 110 /* Implements REGISTER_TARGET_PRAGMAS. */ |
111 void | |
112 m32c_register_pragmas (void) | |
113 { | |
114 c_register_pragma ("GCC", "memregs", m32c_pragma_memregs); | |
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115 c_register_pragma (NULL, "ADDRESS", m32c_pragma_address); |
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116 c_register_pragma (NULL, "address", m32c_pragma_address); |
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117 |
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118 /* R8C and M16C have 16-bit pointers in a 20-bit address zpace. |
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119 M32C has 24-bit pointers in a 24-bit address space, so does not |
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120 need far pointers, but we accept the qualifier anyway, as a |
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121 no-op. */ |
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122 if (TARGET_A16) |
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123 c_register_addr_space ("__far", ADDR_SPACE_FAR); |
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124 else |
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125 c_register_addr_space ("__far", ADDR_SPACE_GENERIC); |
0 | 126 } |