1 /* Copyright (C) 2002, 2003 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #include <pt-machine.h>
24 # include <linuxthreads/internals.h>
27 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
30 # define PSEUDO(name, syscall_name, args) \
34 jne L(pseudo_cancel); \
35 DO_CALL (syscall_name, args); \
37 jae SYSCALL_ERROR_LABEL; \
40 /* Save registers that might get destroyed. */ \
44 /* Restore registers. */ \
46 /* The return value from CENABLE is argument for CDISABLE. */ \
48 movq $SYS_ify (syscall_name), %rax; \
51 /* Save %rax since it's the error code from the syscall. */ \
57 jae SYSCALL_ERROR_LABEL; \
60 # define PUSHARGS_0 /* Nothing. */
61 # define PUSHARGS_1 PUSHARGS_0 movq %rdi, 8(%rsp);
62 # define PUSHARGS_2 PUSHARGS_1 movq %rsi, 16(%rsp);
63 # define PUSHARGS_3 PUSHARGS_2 movq %rdx, 24(%rsp);
64 # define PUSHARGS_4 PUSHARGS_3 movq %rcx, 32(%rsp);
65 # define PUSHARGS_5 PUSHARGS_4 movq %r8, 40(%rsp);
66 # define PUSHARGS_6 PUSHARGS_5 movq %r9, 48(%rsp);
68 # define POPARGS_0 /* Nothing. */
69 # define POPARGS_1 POPARGS_0 movq 8(%rsp), %rdi;
70 # define POPARGS_2 POPARGS_1 movq 16(%rsp), %rsi;
71 # define POPARGS_3 POPARGS_2 movq 24(%rsp), %rdx;
72 # define POPARGS_4 POPARGS_3 movq 32(%rsp), %r10;
73 # define POPARGS_5 POPARGS_4 movq 40(%rsp), %r8;
74 # define POPARGS_6 POPARGS_5 movq 48(%rsp), %r9;
76 /* We always have to align the stack before calling a function. */
77 # define SAVESTK_0 subq $24, %rsp;cfi_adjust_cfa_offset(24);
78 # define SAVESTK_1 SAVESTK_0
79 # define SAVESTK_2 SAVESTK_1
80 # define SAVESTK_3 subq $40, %rsp;cfi_adjust_cfa_offset(40);
81 # define SAVESTK_4 SAVESTK_3
82 # define SAVESTK_5 subq $56, %rsp;cfi_adjust_cfa_offset(56);
83 # define SAVESTK_6 SAVESTK_5
85 # define RESTSTK_0 addq $24,%rsp;cfi_adjust_cfa_offset(-24);
86 # define RESTSTK_1 RESTSTK_0
87 # define RESTSTK_2 RESTSTK_1
88 # define RESTSTK_3 addq $40, %rsp;cfi_adjust_cfa_offset(-40);
89 # define RESTSTK_4 RESTSTK_3
90 # define RESTSTK_5 addq $56, %rsp;cfi_adjust_cfa_offset(-56);
91 # define RESTSTK_6 RESTSTK_5
93 # ifdef IS_IN_libpthread
94 # define CENABLE call __pthread_enable_asynccancel;
95 # define CDISABLE call __pthread_disable_asynccancel;
96 # define __local_multiple_threads __pthread_multiple_threads
97 # elif !defined NOT_IN_libc
98 # define CENABLE call __libc_enable_asynccancel;
99 # define CDISABLE call __libc_disable_asynccancel;
100 # define __local_multiple_threads __libc_multiple_threads
102 # define CENABLE call __librt_enable_asynccancel@plt;
103 # define CDISABLE call __librt_disable_asynccancel@plt;
106 # if defined IS_IN_libpthread || !defined NOT_IN_libc
107 # ifndef __ASSEMBLER__
108 extern int __local_multiple_threads attribute_hidden
;
109 # define SINGLE_THREAD_P \
110 __builtin_expect (__local_multiple_threads == 0, 1)
112 # define SINGLE_THREAD_P cmpl $0, __local_multiple_threads(%rip)
117 # ifndef __ASSEMBLER__
118 # define SINGLE_THREAD_P \
119 __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
120 p_header.data.multiple_threads) == 0, 1)
122 # define SINGLE_THREAD_P cmpl $0, %fs:MULTIPLE_THREADS_OFFSET
127 #elif !defined __ASSEMBLER__
129 /* This code should never be used but we define it anyhow. */
130 # define SINGLE_THREAD_P (1)