1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/* Subroutines for the C front end on the TMS320C[34]x
Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz)
and Herman Ten Brugge (Haj.Ten.Brugge@net.HCC.nl).
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "toplev.h"
#include "cpplib.h"
#include "c-pragma.h"
#include "tm_p.h"
static int c4x_parse_pragma (const char *, tree *, tree *);
/* Handle machine specific pragmas for compatibility with existing
compilers for the C3x/C4x.
pragma attribute
----------------------------------------------------------
CODE_SECTION(symbol,"section") section("section")
DATA_SECTION(symbol,"section") section("section")
FUNC_CANNOT_INLINE(function)
FUNC_EXT_CALLED(function)
FUNC_IS_PURE(function) const
FUNC_IS_SYSTEM(function)
FUNC_NEVER_RETURNS(function) noreturn
FUNC_NO_GLOBAL_ASG(function)
FUNC_NO_IND_ASG(function)
INTERRUPT(function) interrupt
*/
/* Parse a C4x pragma, of the form ( function [, "section"] ) \n.
FUNC is loaded with the IDENTIFIER_NODE of the function, SECT with
the STRING_CST node of the string. If SECT is null, then this
pragma doesn't take a section string. Returns 0 for a good pragma,
-1 for a malformed pragma. */
#define BAD(gmsgid, arg) \
do { warning (OPT_Wpragmas, gmsgid, arg); return -1; } while (0)
static int
c4x_parse_pragma (name, func, sect)
const char *name;
tree *func;
tree *sect;
{
tree f, s, x;
if (c_lex (&x) != CPP_OPEN_PAREN)
BAD ("missing '(' after '#pragma %s' - ignored", name);
if (c_lex (&f) != CPP_NAME)
BAD ("missing function name in '#pragma %s' - ignored", name);
if (sect)
{
if (c_lex (&x) != CPP_COMMA)
BAD ("malformed '#pragma %s' - ignored", name);
if (c_lex (&s) != CPP_STRING)
BAD ("missing section name in '#pragma %s' - ignored", name);
*sect = s;
}
if (c_lex (&x) != CPP_CLOSE_PAREN)
BAD ("missing ')' for '#pragma %s' - ignored", name);
if (c_lex (&x) != CPP_EOF)
warning (OPT_Wpragmas, "junk at end of '#pragma %s'", name);
*func = f;
return 0;
}
void
c4x_pr_CODE_SECTION (pfile)
cpp_reader *pfile ATTRIBUTE_UNUSED;
{
tree func, sect;
if (c4x_parse_pragma ("CODE_SECTION", &func, §))
return;
code_tree = chainon (code_tree,
build_tree_list (func,
build_tree_list (NULL_TREE, sect)));
}
void
c4x_pr_DATA_SECTION (pfile)
cpp_reader *pfile ATTRIBUTE_UNUSED;
{
tree func, sect;
if (c4x_parse_pragma ("DATA_SECTION", &func, §))
return;
data_tree = chainon (data_tree,
build_tree_list (func,
build_tree_list (NULL_TREE, sect)));
}
void
c4x_pr_FUNC_IS_PURE (pfile)
cpp_reader *pfile ATTRIBUTE_UNUSED;
{
tree func;
if (c4x_parse_pragma ("FUNC_IS_PURE", &func, 0))
return;
pure_tree = chainon (pure_tree, build_tree_list (func, NULL_TREE));
}
void
c4x_pr_FUNC_NEVER_RETURNS (pfile)
cpp_reader *pfile ATTRIBUTE_UNUSED;
{
tree func;
if (c4x_parse_pragma ("FUNC_NEVER_RETURNS", &func, 0))
return;
noreturn_tree = chainon (noreturn_tree, build_tree_list (func, NULL_TREE));
}
void
c4x_pr_INTERRUPT (pfile)
cpp_reader *pfile ATTRIBUTE_UNUSED;
{
tree func;
if (c4x_parse_pragma ("INTERRUPT", &func, 0))
return;
interrupt_tree = chainon (interrupt_tree, build_tree_list (func, NULL_TREE));
}
/* Used for FUNC_CANNOT_INLINE, FUNC_EXT_CALLED, FUNC_IS_SYSTEM,
FUNC_NO_GLOBAL_ASG, and FUNC_NO_IND_ASG. */
void
c4x_pr_ignored (pfile)
cpp_reader *pfile ATTRIBUTE_UNUSED;
{
}
|