(CENABLE, CDISABLE): For librt, append @PLT.
[kopensolaris-gnu/glibc.git] / linuxthreads / sysdeps / unix / sysv / linux / s390 / s390-32 / sysdep-cancel.h
1 /* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
2    This file is part of the GNU C Library.
3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
4
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library; if not, write to the Free
17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18    02111-1307 USA.  */
19
20 #include <sysdep.h>
21 #include <tls.h>
22 #ifndef __ASSEMBLER__
23 # include <linuxthreads/internals.h>
24 #endif
25
26 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
27
28 # if !defined NOT_IN_libc || defined IS_IN_libpthread
29
30 #  define PSEUDO_CANCEL(name, syscall_name, args)                             \
31 L(pseudo_cancel):                                                             \
32         STM_##args                                                            \
33         stm     %r12,%r15,48(%r15);                                           \
34         lr      %r14,%r15;                                                    \
35         ahi     %r15,-96;                                                     \
36         st      %r14,0(%r15);                                                 \
37         basr    %r13,0;                                                       \
38 0:      l       %r1,1f-0b(%r13);                                              \
39         bas     %r14,0(%r1,%r13);                                             \
40         lr      %r0,%r2;                                                      \
41         LM_##args                                                             \
42         DO_CALL(syscall_name, args);                                          \
43         l       %r1,2f-0b(%r13);                                              \
44         lr      %r12,%r2;                                                     \
45         lr      %r2,%r0;                                                      \
46         bas     %r14,0(%r1,%r13);                                             \
47         lr      %r2,%r12;                                                     \
48         lm      %r12,%r15,48+96(%r15);                                        \
49         j       L(pseudo_check);                                              \
50 1:      .long   CENABLE-0b;                                                   \
51 2:      .long   CDISABLE-0b;
52
53 # else /* !libc.so && !libpthread.so */
54
55 #  define PSEUDO_CANCEL(name, syscall_name, args)                             \
56 L(pseudo_cancel):                                                             \
57         STM_##args                                                            \
58         stm     %r11,%r15,44(%r15);                                           \
59         lr      %r14,%r15;                                                    \
60         ahi     %r15,-96;                                                     \
61         st      %r14,0(%r15);                                                 \
62         basr    %r13,0;                                                       \
63 0:      l       %r12,3f-0b(%r13);                                             \
64         l       %r1,1f-0b(%r13);                                              \
65         la      %r12,0(%r12,%r13);                                            \
66         bas     %r14,0(%r1,%r13);                                             \
67         lr      %r0,%r2;                                                      \
68         LM_##args                                                             \
69         DO_CALL(syscall_name, args);                                          \
70         l       %r1,2f-0b(%r13);                                              \
71         lr      %r11,%r2;                                                     \
72         lr      %r2,%r0;                                                      \
73         bas     %r14,0(%r1,%r13);                                             \
74         lr      %r2,%r11;                                                     \
75         lm      %r11,%r15,44+96(%r15);                                        \
76         j       L(pseudo_check);                                              \
77 1:      .long   CENABLE@PLT-0b;                                               \
78 2:      .long   CDISABLE@PLT-0b;                                              \
79 3:      .long   _GLOBAL_OFFSET_TABLE_-0b;
80
81 # endif
82
83 # undef PSEUDO
84 # define PSEUDO(name, syscall_name, args)                                     \
85         .text;                                                                \
86 PSEUDO_CANCEL(name, syscall_name, args)                                       \
87 ENTRY(name)                                                                   \
88         SINGLE_THREAD_P(%r1)                                                  \
89         jne     L(pseudo_cancel);                                             \
90         DO_CALL(syscall_name, args);                                          \
91 L(pseudo_check):                                                              \
92         lhi     %r4,-4095;                                                    \
93         clr     %r2,%r4;                                                      \
94         jnl     SYSCALL_ERROR_LABEL;                                          \
95 L(pseudo_end):
96
97 # ifdef IS_IN_libpthread
98 #  define CENABLE       __pthread_enable_asynccancel
99 #  define CDISABLE      __pthread_disable_asynccancel
100 # elif !defined NOT_IN_libc
101 #  define CENABLE       __libc_enable_asynccancel
102 #  define CDISABLE      __libc_disable_asynccancel
103 # else
104 #  define CENABLE       __librt_enable_asynccancel
105 #  define CDISABLE      __librt_disable_asynccancel
106 # endif
107
108 #define STM_0           /* Nothing */
109 #define STM_1           st %r2,8(%r15);
110 #define STM_2           stm %r2,%r3,8(%r15);
111 #define STM_3           stm %r2,%r4,8(%r15);
112 #define STM_4           stm %r2,%r5,8(%r15);
113 #define STM_5           stm %r2,%r5,8(%r15);
114
115 #define LM_0            /* Nothing */
116 #define LM_1            l %r2,8+96(%r15);
117 #define LM_2            lm %r2,%r3,8+96(%r15);
118 #define LM_3            lm %r2,%r4,8+96(%r15);
119 #define LM_4            lm %r2,%r5,8+96(%r15);
120 #define LM_5            lm %r2,%r5,8+96(%r15);
121
122 # ifndef __ASSEMBLER__
123 #  define SINGLE_THREAD_P \
124   __builtin_expect (THREAD_GETMEM (THREAD_SELF,                               \
125                                    p_header.data.multiple_threads) == 0, 1)
126 # else
127 #  define SINGLE_THREAD_P(reg) \
128         ear     reg,%a0;                                                      \
129         icm     reg,15,MULTIPLE_THREADS_OFFSET(reg);
130 # endif
131
132 #elif !defined __ASSEMBLER__
133
134 /* This code should never be used but we define it anyhow.  */
135 # define SINGLE_THREAD_P (1)
136
137 #endif