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
162
163
164
165
166
167
168
169
|
# Copyright (C) 1991,92,93,94,95,96,97,2000,01,02
# Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
# The GNU C Library 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
# Lesser General Public License for more details.
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, write to the Free
# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307 USA.
# errno.texinfo contains lines like:
# @comment errno.h
# @comment POSIX.1: Function not implemented
# @deftypevr Macro int ENOSYS
# @comment errno 123
BEGIN {
print "/* This file generated by errnos.awk. */";
print "";
print "/* The Hurd uses Mach error system 0x10, currently only subsystem 0. */";
print "#ifndef _HURD_ERRNO";
print "#define _HURD_ERRNO(n)\t((0x10 << 26) | ((n) & 0x3fff))";
print "#endif";
print "";
print "#ifdef _ERRNO_H\n";
print "enum __error_t_codes\n{";
errnoh = 0;
maxerrno = 0;
in_mach_errors = "";
in_math = 0;
edom = erange = "";
print "#undef EDOM\n#undef ERANGE";
lno = 0;
}
$1 == "@comment" && $2 == "errno.h" { errnoh=1; next }
$1 == "@comment" && errnoh == 1 \
{
++errnoh;
etext = "";
for (i = 3; i <= NF; ++i)
etext = etext " " $i;
next;
}
errnoh == 2 && $1 == "@deftypevr" && $2 == "Macro" && $3 == "int" \
{ ++errnoh; e = $4; next; }
errnoh == 3 && $1 == "@comment" && $2 == "errno" {
if (e == "EWOULDBLOCK")
{
lines[lno++]="#define EWOULDBLOCK EAGAIN /* Operation would block */";
next;
}
errno = $3 + 0;
if (errno == 0)
next;
if (errno > maxerrno) maxerrno = errno;
x = sprintf ("%-40s/*%s */", sprintf ("%-24s%s", "#define\t" e,
"_HURD_ERRNO (" errno ")"),
etext);
if (e == "EDOM")
edom = x;
else if (e == "ERANGE")
erange = x;
comma[lno] = 1;
lines[lno++] = sprintf("\t%-16s= _HURD_ERRNO (%d)", e, errno);
lines[lno++] = x;
next;
}
{ errnoh=0 }
NF == 3 && $1 == "#define" && $2 == "MACH_SEND_IN_PROGRESS" \
{
in_mach_errors = FILENAME;
lines[lno++] = "\n\t/* Errors from <mach/message.h>. */";
}
NF == 3 && $1 == "#define" && $2 == "KERN_SUCCESS" \
{
in_mach_errors = FILENAME;
lines[lno++] = "\n\t/* Errors from <mach/kern_return.h>. */";
next;
}
in_mach_errors != "" && $2 == "MACH_IPC_COMPAT" \
{
in_mach_errors = "";
}
in_mach_errors == FILENAME && NF == 3 && $1 == "#define" \
{
comma[lno] = 1;
lines[lno++] = sprintf("\t%-32s= %s", "E" $2, $3);
}
$1 == "#define" && $2 == "_MACH_MIG_ERRORS_H_" \
{
in_mig_errors = 1;
lines[lno++] = "\n\t/* Errors from <mach/mig_errors.h>. */";
next;
}
in_mig_errors && $1 == "#endif" && $3 == "_MACH_MIG_ERRORS_H_" \
{
in_mig_errors = 0;
}
(in_mig_errors && $1 == "#define" && $3 <= -300) || \
(in_device_errors && $1 == "#define" && /D_/ && NF > 3) \
{
comment = "";
for (i = 4; i <= NF; ++i)
comment = comment " " $i;
comma[lno] = 1;
lines[lno++] = sprintf("%-32s", sprintf ("\t%-24s= %s", "E" $2, $3)) comment;
}
$1 == "#define" && $2 == "D_SUCCESS" \
{
in_device_errors = 1;
lines[lno++] = "\n\t/* Errors from <device/device_types.h>. */";
next;
}
in_device_errors && $1 == "#endif" \
{
in_device_errors = 0;
}
END \
{
for (i = 0; i < lno - 1; ++i)
printf "%s%s\n", lines[i], (comma[i] ? "," : "");
print lines[i];
print "";
print "};";
print "";
printf "#define\t_HURD_ERRNOS\t%d\n", maxerrno+1;
print "";
print "\
/* User-visible type of error codes. It is ok to use `int' or\n\
`kern_return_t' for these, but with `error_t' the debugger prints\n\
symbolic values. */";
print "#ifdef __USE_GNU";
print "typedef enum __error_t_codes error_t;"
print "#define __error_t_defined\t1"
print "#endif";
print "";
print "\
/* Return the current thread's location for `errno'.\n\
The syntax of this function allows redeclarations like `int errno'. */\n\
extern int *__errno_location (void) __THROW __attribute__ ((__const__));\n\
\n\
#define errno (*__errno_location ())\n\
";
print "#endif /* <errno.h> included. */";
print "";
print "#if !defined (_ERRNO_H) && defined (__need_Emath)";
print edom; print erange;
print "#endif /* <errno.h> not included and need math error codes. */";
}
|
