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
|
/* $OpenBSD: gcc_compat.c,v 1.6 2008/08/17 18:40:12 ragge Exp $ */
/*
* Copyright (c) 2004 Anders Magnusson (ragge@ludd.luth.se).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Routines to support some of the gcc extensions to C.
*/
#ifdef GCC_COMPAT
#include "pass1.h"
#include "cgram.h"
#include <string.h>
static struct kw {
char *name, *ptr;
int rv;
} kw[] = {
/*
* Do NOT change the order of these entries unless you know
* what you're doing!
*/
/* 0 */ { "__asm", NULL, C_ASM },
/* 1 */ { "__signed", NULL, 0 },
/* 2 */ { "__inline", NULL, C_FUNSPEC },
/* 3 */ { "__const", NULL, 0 },
/* 4 */ { "__asm__", NULL, C_ASM },
/* 5 */ { "__inline__", NULL, C_FUNSPEC },
/* 6 */ { "__thread", NULL, 0 },
/* 7 */ { "__FUNCTION__", NULL, 0 },
/* 8 */ { "__volatile", NULL, 0 },
/* 9 */ { "__volatile__", NULL, 0 },
/* 10 */{ "__restrict", NULL, -1 },
{ NULL, NULL, 0 },
};
void
gcc_init()
{
struct kw *kwp;
for (kwp = kw; kwp->name; kwp++)
kwp->ptr = addname(kwp->name);
}
#define TS "\n#pragma tls\n# %d\n"
#define TLLEN sizeof(TS)+10
/*
* See if a string matches a gcc keyword.
*/
int
gcc_keyword(char *str, NODE **n)
{
char tlbuf[TLLEN], *tw;
struct kw *kwp;
int i;
for (i = 0, kwp = kw; kwp->name; kwp++, i++)
if (str == kwp->ptr)
break;
if (kwp->name == NULL)
return 0;
if (kwp->rv)
return kwp->rv;
switch (i) {
case 1: /* __signed */
*n = mkty((TWORD)SIGNED, 0, MKSUE(SIGNED));
return C_TYPE;
case 3: /* __const */
*n = block(QUALIFIER, NIL, NIL, CON, 0, 0);
return C_QUALIFIER;
case 6: /* __thread */
snprintf(tlbuf, TLLEN, TS, lineno);
tw = &tlbuf[strlen(tlbuf)];
while (tw > tlbuf)
cunput(*--tw);
return -1;
case 7: /* __FUNCTION__ */
if (cftnsp == NULL) {
uerror("__FUNCTION__ outside function");
yylval.strp = "";
} else
yylval.strp = cftnsp->sname; /* XXX - not C99 */
return C_STRING;
case 8: /* __volatile */
case 9: /* __volatile__ */
*n = block(QUALIFIER, NIL, NIL, VOL, 0, 0);
return C_QUALIFIER;
}
cerror("gcc_keyword");
return 0;
}
#endif
|
