Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/m32c/m32c-pragma.c @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | 04ced10e8804 |
| children | 1830386684a0 |
| rev | line source |
|---|---|
| 0 | 1 /* M32C Pragma support |
| 131 | 2 Copyright (C) 2004-2018 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 | |
| 131 | 21 #define IN_TARGET_CODE 1 |
| 22 | |
| 0 | 23 #include "config.h" |
| 24 #include "system.h" | |
| 25 #include "coretypes.h" | |
| 26 #include "tm.h" | |
| 111 | 27 #include "c-family/c-common.h" |
|
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28 #include "c-family/c-pragma.h" |
| 0 | 29 #include "m32c-protos.h" |
| 30 | |
| 31 /* Implements the "GCC memregs" pragma. This pragma takes only an | |
| 32 integer, and is semantically identical to the -memregs= command | |
| 33 line option. The only catch is, the programmer should only use | |
| 34 this pragma at the beginning of the file (preferably, in some | |
| 35 project-wide header) to avoid ABI changes related to changing the | |
| 36 list of available "registers". */ | |
| 37 static void | |
| 38 m32c_pragma_memregs (cpp_reader * reader ATTRIBUTE_UNUSED) | |
| 39 { | |
| 40 /* on off */ | |
| 41 tree val; | |
| 42 enum cpp_ttype type; | |
| 43 HOST_WIDE_INT i; | |
| 44 | |
| 45 type = pragma_lex (&val); | |
| 46 if (type == CPP_NUMBER) | |
| 47 { | |
| 111 | 48 if (tree_fits_uhwi_p (val)) |
| 0 | 49 { |
| 111 | 50 i = tree_to_uhwi (val); |
| 0 | 51 |
| 52 type = pragma_lex (&val); | |
| 53 if (type != CPP_EOF) | |
| 54 warning (0, "junk at end of #pragma GCC memregs [0..16]"); | |
| 55 | |
| 131 | 56 if (i >= 0 && i <= 16) |
| 0 | 57 { |
| 58 if (!ok_to_change_target_memregs) | |
| 59 { | |
| 60 warning (0, | |
| 61 "#pragma GCC memregs must precede any function decls"); | |
| 62 return; | |
| 63 } | |
|
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64 target_memregs = i; |
| 0 | 65 m32c_conditional_register_usage (); |
| 66 } | |
| 67 else | |
| 68 { | |
| 69 warning (0, "#pragma GCC memregs takes a number [0..16]"); | |
| 70 } | |
| 71 | |
| 72 return; | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 error ("#pragma GCC memregs takes a number [0..16]"); | |
| 77 } | |
| 78 | |
|
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79 /* Implements the "pragma ADDRESS" pragma. This pragma takes a |
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80 variable name and an address, and arranges for that variable to be |
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81 "at" that address. The variable is also made volatile. */ |
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82 static void |
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83 m32c_pragma_address (cpp_reader * reader ATTRIBUTE_UNUSED) |
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84 { |
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85 /* on off */ |
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86 tree var, addr; |
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87 enum cpp_ttype type; |
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88 |
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89 type = pragma_lex (&var); |
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90 if (type == CPP_NAME) |
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91 { |
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92 type = pragma_lex (&addr); |
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93 if (type == CPP_NUMBER) |
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94 { |
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95 if (var != error_mark_node) |
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96 { |
| 111 | 97 unsigned uaddr = tree_to_uhwi (addr); |
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98 m32c_note_pragma_address (IDENTIFIER_POINTER (var), uaddr); |
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99 } |
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100 |
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101 type = pragma_lex (&var); |
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102 if (type != CPP_EOF) |
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103 { |
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104 error ("junk at end of #pragma ADDRESS"); |
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105 } |
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106 return; |
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107 } |
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108 } |
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109 error ("malformed #pragma ADDRESS variable address"); |
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110 } |
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111 |
| 0 | 112 /* Implements REGISTER_TARGET_PRAGMAS. */ |
| 113 void | |
| 114 m32c_register_pragmas (void) | |
| 115 { | |
| 116 c_register_pragma ("GCC", "memregs", m32c_pragma_memregs); | |
|
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117 c_register_pragma (NULL, "ADDRESS", m32c_pragma_address); |
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118 c_register_pragma (NULL, "address", m32c_pragma_address); |
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119 |
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120 /* R8C and M16C have 16-bit pointers in a 20-bit address zpace. |
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121 M32C has 24-bit pointers in a 24-bit address space, so does not |
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122 need far pointers, but we accept the qualifier anyway, as a |
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123 no-op. */ |
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124 if (TARGET_A16) |
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125 c_register_addr_space ("__far", ADDR_SPACE_FAR); |
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126 else |
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127 c_register_addr_space ("__far", ADDR_SPACE_GENERIC); |
| 0 | 128 } |