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directive to ENTRY macros. (END): Add cfi_endproc directive to END macro. * sysdeps/powerpc/powerpc64/sysdep.h (ENTRY, EALIGN): Add cfi_startproc directive to ENTRY macros. (END, END_GEN_TB): Add cfi_endproc directive to END macros. * sysdeps/powerpc/powerpc32/dl-start.S: Remove ENTRY()s for _dl_start_user and _dl_main_dispatch. * sysdeps/powerpc/powerpc32/fpu/fprrest.S: Use END macro. * sysdeps/powerpc/powerpc32/fpu/fprsave.S: Use Likewise. * sysdeps/powerpc/powerpc32/gprrest0.S: Likewise. * sysdeps/powerpc/powerpc32/gprrest1.S: Likewise. * sysdeps/powerpc/powerpc32/gprsave0.S: Likewise. * sysdeps/powerpc/powerpc32/gprsave1.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/socket.S: Remove redundant cfi_startproc and cfi_endproc. * sysdeps/unix/sysv/linux/powerpc/powerpc64/socket.S: Likewise. 2006-01-04 Ulrich Drepper <drepper@redhat.com> * sysdeps/pthread/aio_misc.h (struct waitlist): Add result member. * sysdeps/pthread/aio_notify.c (__aio_notify): For synchronous waiters, failed I/O, and a result pointer, set value to -1. * sysdeps/pthread/aio_suspend.c: Initialize result pointer to NULL. * sysdeps/pthread/lio_listio.c: For LIO_WAIT, point result pointer in wait list to local variable result. If nonzero afterwards, set errno to EIO. For LIO_NOWAIT set result to NULL. * rt/Makefile (tests): Add tst-aio8. * rt/tst-aio8.c: New file.
131 lines
4.1 KiB
C
131 lines
4.1 KiB
C
/* Cancellable system call stubs. Linux/PowerPC version.
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Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Franz Sirl <Franz.Sirl-kernel@lauterbach.com>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA
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02110-1301 USA. */
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#include <sysdep.h>
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#include <tls.h>
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#ifndef __ASSEMBLER__
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# include <nptl/pthreadP.h>
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#endif
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#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
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# undef PSEUDO
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# define PSEUDO(name, syscall_name, args) \
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.section ".text"; \
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ENTRY (name) \
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SINGLE_THREAD_P; \
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bne- .Lpseudo_cancel; \
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.type __##syscall_name##_nocancel,@function; \
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.globl __##syscall_name##_nocancel; \
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__##syscall_name##_nocancel: \
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DO_CALL (SYS_ify (syscall_name)); \
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PSEUDO_RET; \
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.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel; \
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.Lpseudo_cancel: \
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stwu 1,-48(1); \
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cfi_adjust_cfa_offset (48); \
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mflr 9; \
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stw 9,52(1); \
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cfi_offset (lr, 4); \
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CGOTSETUP; \
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DOCARGS_##args; /* save syscall args around CENABLE. */ \
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CENABLE; \
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stw 3,16(1); /* store CENABLE return value (MASK). */ \
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UNDOCARGS_##args; /* restore syscall args. */ \
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DO_CALL (SYS_ify (syscall_name)); \
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mfcr 0; /* save CR/R3 around CDISABLE. */ \
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stw 3,8(1); \
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stw 0,12(1); \
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lwz 3,16(1); /* pass MASK to CDISABLE. */ \
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CDISABLE; \
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lwz 4,52(1); \
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lwz 0,12(1); /* restore CR/R3. */ \
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lwz 3,8(1); \
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CGOTRESTORE; \
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mtlr 4; \
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mtcr 0; \
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addi 1,1,48;
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# define DOCARGS_0
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# define UNDOCARGS_0
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# define DOCARGS_1 stw 3,20(1); DOCARGS_0
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# define UNDOCARGS_1 lwz 3,20(1); UNDOCARGS_0
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# define DOCARGS_2 stw 4,24(1); DOCARGS_1
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# define UNDOCARGS_2 lwz 4,24(1); UNDOCARGS_1
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# define DOCARGS_3 stw 5,28(1); DOCARGS_2
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# define UNDOCARGS_3 lwz 5,28(1); UNDOCARGS_2
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# define DOCARGS_4 stw 6,32(1); DOCARGS_3
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# define UNDOCARGS_4 lwz 6,32(1); UNDOCARGS_3
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# define DOCARGS_5 stw 7,36(1); DOCARGS_4
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# define UNDOCARGS_5 lwz 7,36(1); UNDOCARGS_4
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# define DOCARGS_6 stw 8,40(1); DOCARGS_5
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# define UNDOCARGS_6 lwz 8,40(1); UNDOCARGS_5
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# define CGOTSETUP
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# define CGOTRESTORE
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# ifdef IS_IN_libpthread
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# define CENABLE bl __pthread_enable_asynccancel@local
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# define CDISABLE bl __pthread_disable_asynccancel@local
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# elif !defined NOT_IN_libc
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# define CENABLE bl __libc_enable_asynccancel@local
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# define CDISABLE bl __libc_disable_asynccancel@local
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# elif defined IS_IN_librt
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# define CENABLE bl JUMPTARGET(__librt_enable_asynccancel)
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# define CDISABLE bl JUMPTARGET(__librt_disable_asynccancel)
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# if defined HAVE_AS_REL16 && defined PIC
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# undef CGOTSETUP
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# define CGOTSETUP \
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bcl 20,31,1f; \
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1: stw 30,44(1); \
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mflr 30; \
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addis 30,30,_GLOBAL_OFFSET_TABLE-1b@ha; \
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addi 30,30,_GLOBAL_OFFSET_TABLE-1b@l
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# undef CGOTRESTORE
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# define CGOTRESTORE \
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lwz 30,44(1)
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# endif
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# else
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# error Unsupported library
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# endif
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# ifndef __ASSEMBLER__
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# define SINGLE_THREAD_P \
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__builtin_expect (THREAD_GETMEM (THREAD_SELF, \
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header.multiple_threads) == 0, 1)
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# else
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# define SINGLE_THREAD_P \
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lwz 10,MULTIPLE_THREADS_OFFSET(2); \
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cmpwi 10,0
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# endif
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#elif !defined __ASSEMBLER__
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# define SINGLE_THREAD_P (1)
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# define NO_CANCELLATION 1
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#endif
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