1 /* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
22 # include <pthreadP.h>
25 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
28 # define PSEUDO(name, syscall_name, args) \
31 cmpl $0, %gs:MULTIPLE_THREADS_OFFSET; \
32 jne L(pseudo_cancel); \
33 .type __##syscall_name##_nocancel,@function; \
34 .globl __##syscall_name##_nocancel; \
35 __##syscall_name##_nocancel: \
36 DO_CALL (syscall_name, args); \
38 jae SYSCALL_ERROR_LABEL; \
40 .size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
46 movl $SYS_ify (syscall_name), %eax; \
51 jae SYSCALL_ERROR_LABEL; \
54 # define SAVE_OLDTYPE_0 movl %eax, %ecx;
55 # define SAVE_OLDTYPE_1 SAVE_OLDTYPE_0
56 # define SAVE_OLDTYPE_2 pushl %eax; cfi_adjust_cfa_offset (4);
57 # define SAVE_OLDTYPE_3 SAVE_OLDTYPE_2
58 # define SAVE_OLDTYPE_4 SAVE_OLDTYPE_2
59 # define SAVE_OLDTYPE_5 SAVE_OLDTYPE_2
60 # define SAVE_OLDTYPE_6 SAVE_OLDTYPE_2
62 # define PUSHCARGS_0 /* No arguments to push. */
63 # define DOCARGS_0 /* No arguments to frob. */
64 # define POPCARGS_0 /* No arguments to pop. */
65 # define _PUSHCARGS_0 /* No arguments to push. */
66 # define _POPCARGS_0 /* No arguments to pop. */
68 # define PUSHCARGS_1 movl %ebx, %edx; cfi_register (ebx, edx); PUSHCARGS_0
69 # define DOCARGS_1 _DOARGS_1 (4)
70 # define POPCARGS_1 POPCARGS_0; movl %edx, %ebx; cfi_restore (ebx);
71 # define _PUSHCARGS_1 pushl %ebx; cfi_adjust_cfa_offset (4); \
72 cfi_rel_offset (ebx, 0); _PUSHCARGS_0
73 # define _POPCARGS_1 _POPCARGS_0; popl %ebx; \
74 cfi_adjust_cfa_offset (-4); cfi_restore (ebx);
76 # define PUSHCARGS_2 PUSHCARGS_1
77 # define DOCARGS_2 _DOARGS_2 (12)
78 # define POPCARGS_2 POPCARGS_1
79 # define _PUSHCARGS_2 _PUSHCARGS_1
80 # define _POPCARGS_2 _POPCARGS_1
82 # define PUSHCARGS_3 _PUSHCARGS_2
83 # define DOCARGS_3 _DOARGS_3 (20)
84 # define POPCARGS_3 _POPCARGS_3
85 # define _PUSHCARGS_3 _PUSHCARGS_2
86 # define _POPCARGS_3 _POPCARGS_2
88 # define PUSHCARGS_4 _PUSHCARGS_4
89 # define DOCARGS_4 _DOARGS_4 (28)
90 # define POPCARGS_4 _POPCARGS_4
91 # define _PUSHCARGS_4 pushl %esi; cfi_adjust_cfa_offset (4); \
92 cfi_rel_offset (esi, 0); _PUSHCARGS_3
93 # define _POPCARGS_4 _POPCARGS_3; popl %esi; \
94 cfi_adjust_cfa_offset (-4); cfi_restore (esi);
96 # define PUSHCARGS_5 _PUSHCARGS_5
97 # define DOCARGS_5 _DOARGS_5 (36)
98 # define POPCARGS_5 _POPCARGS_5
99 # define _PUSHCARGS_5 pushl %edi; cfi_adjust_cfa_offset (4); \
100 cfi_rel_offset (edi, 0); _PUSHCARGS_4
101 # define _POPCARGS_5 _POPCARGS_4; popl %edi; \
102 cfi_adjust_cfa_offset (-4); cfi_restore (edi);
104 # define PUSHCARGS_6 _PUSHCARGS_6
105 # define DOCARGS_6 _DOARGS_6 (44)
106 # define POPCARGS_6 _POPCARGS_6
107 # define _PUSHCARGS_6 pushl %ebp; cfi_adjust_cfa_offset (4); \
108 cfi_rel_offset (ebp, 0); _PUSHCARGS_5
109 # define _POPCARGS_6 _POPCARGS_5; popl %ebp; \
110 cfi_adjust_cfa_offset (-4); cfi_restore (ebp);
112 # ifdef IS_IN_libpthread
113 # define CENABLE call __pthread_enable_asynccancel;
114 # define CDISABLE call __pthread_disable_asynccancel
115 # elif !defined NOT_IN_libc
116 # define CENABLE call __libc_enable_asynccancel;
117 # define CDISABLE call __libc_disable_asynccancel
118 # elif defined IS_IN_librt
119 # define CENABLE call __librt_enable_asynccancel;
120 # define CDISABLE call __librt_disable_asynccancel
122 # error Unsupported library
124 # define POPSTATE_0 \
125 pushl %eax; cfi_adjust_cfa_offset (4); movl %ecx, %eax; \
126 CDISABLE; popl %eax; cfi_adjust_cfa_offset (-4);
127 # define POPSTATE_1 POPSTATE_0
128 # define POPSTATE_2 xchgl (%esp), %eax; CDISABLE; popl %eax; \
129 cfi_adjust_cfa_offset (-4);
130 # define POPSTATE_3 POPSTATE_2
131 # define POPSTATE_4 POPSTATE_3
132 # define POPSTATE_5 POPSTATE_4
133 # define POPSTATE_6 POPSTATE_5
135 # ifndef __ASSEMBLER__
136 # define SINGLE_THREAD_P \
137 __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
138 header.multiple_threads) == 0, 1)
140 # define SINGLE_THREAD_P cmpl $0, %gs:MULTIPLE_THREADS_OFFSET
143 #elif !defined __ASSEMBLER__
145 # define SINGLE_THREAD_P (1)
146 # define NO_CANCELLATION 1
150 #ifndef __ASSEMBLER__
151 # define RTLD_SINGLE_THREAD_P \
152 __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
153 header.multiple_threads) == 0, 1)