| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116 |
- /* Copyright (C) 2003 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. */
- #include <sysdep.h>
- #include <tls.h>
- /* #include <pt-machine.h> */
- #ifndef __ASSEMBLER__
- # include <pthreadP.h>
- #endif
- #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
- /* CENABLE/CDISABLE in PSEUDO below use call8, stack frame size must be
- * at least 32.
- */
- #if FRAMESIZE < 32
- #undef FRAMESIZE
- #define FRAMESIZE 32
- #endif
- # undef PSEUDO
- # define PSEUDO(name, syscall_name, args) \
- .text; \
- ENTRY (name) \
- SINGLE_THREAD_P(a15); \
- bnez a15, .Lpseudo_cancel; \
- DO_CALL (syscall_name, args); \
- bgez a2, .Lpseudo_done; \
- movi a4, -4095; \
- blt a2, a4, .Lpseudo_done; \
- j SYSCALL_ERROR_LABEL; \
- .Lpseudo_done: \
- retw; \
- .Lpseudo_cancel: \
- /* The syscall args are in a2...a7; no need to save */ \
- CENABLE; \
- /* The return value is in a10 and preserved across the syscall */ \
- DO_CALL (syscall_name, args); \
- CDISABLE; \
- bgez a2, .Lpseudo_end; \
- movi a4, -4095; \
- blt a2, a4, .Lpseudo_end; \
- j SYSCALL_ERROR_LABEL; \
- .Lpseudo_end:
- # ifdef IS_IN_libpthread
- # define CENABLE_FUNC __pthread_enable_asynccancel
- # define CDISABLE_FUNC __pthread_disable_asynccancel
- # define __local_multiple_threads __pthread_multiple_threads
- # elif !defined NOT_IN_libc
- # define CENABLE_FUNC __libc_enable_asynccancel
- # define CDISABLE_FUNC __libc_disable_asynccancel
- # define __local_multiple_threads __libc_multiple_threads
- # elif defined IS_IN_librt
- # define CENABLE_FUNC __librt_enable_asynccancel
- # define CDISABLE_FUNC __librt_disable_asynccancel
- # else
- # error Unsupported library
- # endif
- # define CENABLE movi a8, CENABLE_FUNC; \
- callx8 a8
- # define CDISABLE movi a8, CDISABLE_FUNC; \
- callx8 a8
- # if defined IS_IN_libpthread || !defined NOT_IN_libc
- # ifndef __ASSEMBLER__
- extern int __local_multiple_threads attribute_hidden;
- # define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
- # else
- # define SINGLE_THREAD_P(reg) movi reg, __local_multiple_threads; \
- l32i reg, reg, 0;
- # endif
- # else
- # ifndef __ASSEMBLER__
- # define SINGLE_THREAD_P \
- __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
- header.multiple_threads) == 0, 1)
- # else
- # define SINGLE_THREAD_P(reg) \
- rur reg, threadptr; \
- l32i reg, reg, MULTIPLE_THREADS_OFFSET;
- # endif
- # endif
- #else
- /* This code should never be used but we define it anyhow. */
- # 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
|
