2016-01-04 17:05:18 +01:00
|
|
|
/* Copyright (C) 2010-2016 Free Software Foundation, Inc.
|
2010-03-12 19:50:55 +01:00
|
|
|
This file is part of the GNU C Library.
|
|
|
|
|
Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.
|
|
|
|
|
|
|
|
|
|
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
|
2012-03-10 00:56:38 +01:00
|
|
|
License along with the GNU C Library. If not, see
|
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
2010-03-12 19:50:55 +01:00
|
|
|
|
|
|
|
|
#include <sysdep.h>
|
|
|
|
|
#include <tls.h>
|
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
|
# include <nptl/pthreadP.h>
|
|
|
|
|
#endif
|
|
|
|
|
|
2014-11-24 10:33:45 +01:00
|
|
|
#if IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
|
2010-03-12 19:50:55 +01:00
|
|
|
|
|
|
|
|
# undef PSEUDO
|
|
|
|
|
# define PSEUDO(name, syscall_name, args) \
|
|
|
|
|
.text; \
|
|
|
|
|
ENTRY (name) \
|
|
|
|
|
SINGLE_THREAD_P; \
|
|
|
|
|
jne .Lpseudo_cancel; \
|
|
|
|
|
.type __##syscall_name##_nocancel,@function; \
|
|
|
|
|
.globl __##syscall_name##_nocancel; \
|
|
|
|
|
__##syscall_name##_nocancel: \
|
|
|
|
|
DO_CALL (syscall_name, args); \
|
|
|
|
|
cmp.l &-4095, %d0; \
|
|
|
|
|
jcc SYSCALL_ERROR_LABEL; \
|
|
|
|
|
rts; \
|
|
|
|
|
.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
|
|
|
|
|
.Lpseudo_cancel: \
|
|
|
|
|
CENABLE; \
|
|
|
|
|
DOCARGS_##args \
|
|
|
|
|
move.l %d0, -(%sp); /* Save result of CENABLE. */ \
|
|
|
|
|
cfi_adjust_cfa_offset (4); \
|
|
|
|
|
move.l &SYS_ify (syscall_name), %d0; \
|
|
|
|
|
trap &0; \
|
|
|
|
|
move.l %d0, %d2; \
|
|
|
|
|
CDISABLE; \
|
|
|
|
|
addq.l &4, %sp; /* Remove result of CENABLE from the stack. */ \
|
|
|
|
|
cfi_adjust_cfa_offset (-4); \
|
|
|
|
|
move.l %d2, %d0; \
|
|
|
|
|
UNDOCARGS_##args \
|
|
|
|
|
cmp.l &-4095, %d0; \
|
2012-01-05 14:52:48 +01:00
|
|
|
jcc SYSCALL_ERROR_LABEL
|
2010-03-12 19:50:55 +01:00
|
|
|
|
|
|
|
|
/* Note: we use D2 to save syscall's return value as D0 will be clobbered in
|
|
|
|
|
CDISABLE. */
|
|
|
|
|
# define DOCARGS_0 move.l %d2, -(%sp); \
|
|
|
|
|
cfi_adjust_cfa_offset (4); cfi_rel_offset (%d2, 0);
|
|
|
|
|
# define UNDOCARGS_0 move.l (%sp)+, %d2; \
|
|
|
|
|
cfi_adjust_cfa_offset (-4); cfi_restore (%d2);
|
|
|
|
|
|
|
|
|
|
# define DOCARGS_1 _DOCARGS_1 (4); DOCARGS_0
|
|
|
|
|
# define _DOCARGS_1(n) move.l n(%sp), %d1;
|
|
|
|
|
# define UNDOCARGS_1 UNDOCARGS_0
|
|
|
|
|
|
|
|
|
|
# define DOCARGS_2 _DOCARGS_2 (8)
|
|
|
|
|
# define _DOCARGS_2(n) DOCARGS_0 move.l n+4(%sp), %d2; _DOCARGS_1 (n)
|
|
|
|
|
# define UNDOCARGS_2 UNDOCARGS_0
|
|
|
|
|
|
|
|
|
|
# define DOCARGS_3 _DOCARGS_3 (12)
|
|
|
|
|
# define _DOCARGS_3(n) move.l %d3, -(%sp); \
|
|
|
|
|
cfi_adjust_cfa_offset (4); cfi_rel_offset (%d3, 0); \
|
|
|
|
|
move.l n+4(%sp), %d3; _DOCARGS_2 (n)
|
|
|
|
|
# define UNDOCARGS_3 UNDOCARGS_2 move.l (%sp)+, %d3; \
|
|
|
|
|
cfi_adjust_cfa_offset (-4); cfi_restore (%d3);
|
|
|
|
|
|
|
|
|
|
# define DOCARGS_4 _DOCARGS_4 (16)
|
|
|
|
|
# define _DOCARGS_4(n) move.l %d4, -(%sp); \
|
|
|
|
|
cfi_adjust_cfa_offset (4); cfi_rel_offset (%d4, 0); \
|
|
|
|
|
move.l n+4(%sp), %d4; _DOCARGS_3 (n)
|
|
|
|
|
# define UNDOCARGS_4 UNDOCARGS_3 move.l (%sp)+, %d4; \
|
|
|
|
|
cfi_adjust_cfa_offset (-4); cfi_restore (%d4);
|
|
|
|
|
|
|
|
|
|
# define DOCARGS_5 _DOCARGS_5 (20)
|
2012-11-18 01:07:22 +01:00
|
|
|
# define _DOCARGS_5(n) move.l %d5, -(%sp); \
|
|
|
|
|
cfi_adjust_cfa_offset (4); cfi_rel_offset (%d5, 0); \
|
|
|
|
|
move.l n+4(%sp), %d5; _DOCARGS_4 (n)
|
|
|
|
|
# define UNDOCARGS_5 UNDOCARGS_4 move.l (%sp)+, %d5; \
|
|
|
|
|
cfi_adjust_cfa_offset (-4); cfi_restore (%d5);
|
2010-03-12 19:50:55 +01:00
|
|
|
|
|
|
|
|
# define DOCARGS_6 _DOCARGS_6 (24)
|
|
|
|
|
# define _DOCARGS_6(n) move.l n(%sp), %a0; _DOCARGS_5 (n-4)
|
|
|
|
|
# define UNDOCARGS_6 UNDOCARGS_5
|
|
|
|
|
|
|
|
|
|
# ifdef PIC
|
|
|
|
|
# define PSEUDO_JMP(sym) jbsr sym ## @PLTPC
|
|
|
|
|
# else
|
|
|
|
|
# define PSEUDO_JMP(sym) jbsr sym
|
|
|
|
|
# endif
|
|
|
|
|
|
2014-11-20 09:52:40 +01:00
|
|
|
# if IS_IN (libpthread)
|
2010-03-12 19:50:55 +01:00
|
|
|
# define CENABLE PSEUDO_JMP (__pthread_enable_asynccancel)
|
|
|
|
|
# define CDISABLE PSEUDO_JMP (__pthread_disable_asynccancel)
|
2014-11-24 10:33:45 +01:00
|
|
|
# elif IS_IN (libc)
|
2010-03-12 19:50:55 +01:00
|
|
|
# define CENABLE PSEUDO_JMP (__libc_enable_asynccancel)
|
|
|
|
|
# define CDISABLE PSEUDO_JMP (__libc_disable_asynccancel)
|
2014-11-20 08:56:25 +01:00
|
|
|
# elif IS_IN (librt)
|
2010-03-12 19:50:55 +01:00
|
|
|
# define CENABLE PSEUDO_JMP (__librt_enable_asynccancel)
|
|
|
|
|
# define CDISABLE PSEUDO_JMP (__librt_disable_asynccancel)
|
|
|
|
|
# else
|
|
|
|
|
# error Unsupported library
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
# ifndef __ASSEMBLER__
|
|
|
|
|
# define SINGLE_THREAD_P \
|
|
|
|
|
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
|
|
|
|
|
header.multiple_threads) == 0, 1)
|
|
|
|
|
# else
|
|
|
|
|
# define SINGLE_THREAD_P \
|
|
|
|
|
PSEUDO_JMP (__m68k_read_tp); \
|
|
|
|
|
tst.l MULTIPLE_THREADS_OFFSET(%a0)
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
#elif !defined __ASSEMBLER__
|
|
|
|
|
|
|
|
|
|
# define SINGLE_THREAD_P (1)
|
|
|
|
|
# define NO_CANCELLATION (1)
|
|
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifndef __ASSEMBLER__
|
|
|
|
|
# define RTLD_SINGLE_THREAD_P \
|
|
|
|
|
__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
|
|
|
|
|
header.multiple_threads) == 0, \
|
|
|
|
|
1)
|
|
|
|
|
#endif
|
