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112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/* Copyright (C) 2002-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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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, see
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<http://www.gnu.org/licenses/>. */
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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 IS_IN (libc) || IS_IN (libpthread) || IS_IN (librt)
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# undef PSEUDO
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# define PSEUDO(name, syscall_name, args) \
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.text; \
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.globl __syscall_error; \
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ENTRY(name) \
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ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;\
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cmp %g1, 0; \
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bne 1f; \
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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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mov SYS_ify(syscall_name), %g1; \
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ta 0x10; \
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bcc 8f; \
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mov %o7, %g1; \
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call __syscall_error; \
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mov %g1, %o7; \
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8: jmpl %o7 + 8, %g0; \
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nop; \
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.size __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;\
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1: save %sp, -96, %sp; \
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cfi_def_cfa_register(%fp); \
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cfi_window_save; \
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cfi_register(%o7, %i7); \
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CENABLE; \
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nop; \
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mov %o0, %l0; \
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COPY_ARGS_##args \
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mov SYS_ify(syscall_name), %g1; \
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ta 0x10; \
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bcc 1f; \
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mov %o0, %l1; \
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CDISABLE; \
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mov %l0, %o0; \
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call __syscall_error; \
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mov %l1, %o0; \
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b 2f; \
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mov -1, %l1; \
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1: CDISABLE; \
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mov %l0, %o0; \
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2: jmpl %i7 + 8, %g0; \
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restore %g0, %l1, %o0;
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# if IS_IN (libpthread)
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# define CENABLE call __pthread_enable_asynccancel
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# define CDISABLE call __pthread_disable_asynccancel
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# elif IS_IN (libc)
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# define CENABLE call __libc_enable_asynccancel
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# define CDISABLE call __libc_disable_asynccancel
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# elif IS_IN (librt)
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# define CENABLE call __librt_enable_asynccancel
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# define CDISABLE call __librt_disable_asynccancel
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# else
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# error Unsupported library
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# endif
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#define COPY_ARGS_0 /* Nothing */
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#define COPY_ARGS_1 COPY_ARGS_0 mov %i0, %o0;
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#define COPY_ARGS_2 COPY_ARGS_1 mov %i1, %o1;
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#define COPY_ARGS_3 COPY_ARGS_2 mov %i2, %o2;
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#define COPY_ARGS_4 COPY_ARGS_3 mov %i3, %o3;
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#define COPY_ARGS_5 COPY_ARGS_4 mov %i4, %o4;
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#define COPY_ARGS_6 COPY_ARGS_5 mov %i5, %o5;
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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 ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1
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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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#ifndef __ASSEMBLER__
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# define RTLD_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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#endif
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