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145 lines
5.2 KiB
C
145 lines
5.2 KiB
C
/* Copyright (C) 2002, 2003 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 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 <linuxthreads/internals.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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# ifdef IS_IN_librt
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# define PSEUDO_NLOCAL 6
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# define PSEUDO_SAVE_GP mov loc5 = gp
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# define PSEUDO_RESTORE_GP mov gp = loc5
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# define PSEUDO_SAVE_GP_1
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# define PSEUDO_RESTORE_GP_1 mov gp = loc5
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# else
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# define PSEUDO_NLOCAL 5
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# define PSEUDO_SAVE_GP
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# define PSEUDO_RESTORE_GP
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# define PSEUDO_SAVE_GP_1 mov loc4 = gp;;
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# define PSEUDO_RESTORE_GP_1 mov gp = loc4
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# endif
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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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ENTRY (name) \
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adds r14 = MULTIPLE_THREADS_OFFSET, r13;; \
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ld4 r14 = [r14]; \
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mov r15 = SYS_ify(syscall_name);; \
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cmp4.ne p6, p7 = 0, r14; \
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(p6) br.cond.spnt .Lpseudo_cancel;; \
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break __BREAK_SYSCALL;; \
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cmp.eq p6,p0=-1,r10; \
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(p6) br.cond.spnt.few __syscall_error; \
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ret;; \
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.endp name; \
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.proc __GC_##name; \
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.globl __GC_##name; \
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.hidden __GC_##name; \
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__GC_##name: \
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.Lpseudo_cancel: \
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.prologue; \
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.regstk args, PSEUDO_NLOCAL, args, 0; \
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.save ar.pfs, loc0; \
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alloc loc0 = ar.pfs, args, PSEUDO_NLOCAL, args, 0; \
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.save rp, loc1; \
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mov loc1 = rp; \
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PSEUDO_SAVE_GP;; \
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.body; \
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CENABLE;; \
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PSEUDO_RESTORE_GP; \
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mov loc2 = r8; \
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COPY_ARGS_##args \
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mov r15 = SYS_ify(syscall_name); \
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break __BREAK_SYSCALL;; \
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mov loc3 = r8; \
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mov loc4 = r10; \
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mov out0 = loc2; \
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CDISABLE;; \
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PSEUDO_RESTORE_GP; \
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cmp.eq p6,p0=-1,loc4; \
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(p6) br.cond.spnt.few __syscall_error_##args; \
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mov r8 = loc3; \
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mov rp = loc1; \
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mov ar.pfs = loc0; \
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.Lpseudo_end: \
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ret; \
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.endp __GC_##name; \
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.section .gnu.linkonce.t.__syscall_error_##args, "ax"; \
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.align 32; \
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.proc __syscall_error_##args; \
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.global __syscall_error_##args; \
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.hidden __syscall_error_##args; \
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.size __syscall_error_##args, 64; \
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__syscall_error_##args: \
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.prologue; \
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.regstk args, PSEUDO_NLOCAL, args, 0; \
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.save ar.pfs, loc0; \
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.save rp, loc1; \
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.body; \
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PSEUDO_SAVE_GP_1; \
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br.call.sptk.many b0 = __errno_location;; \
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st4 [r8] = loc3; \
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PSEUDO_RESTORE_GP_1; \
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mov rp = loc1; \
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mov r8 = -1; \
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mov ar.pfs = loc0
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#undef PSEUDO_END
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#define PSEUDO_END(name) .endp
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# ifdef IS_IN_libpthread
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# define CENABLE br.call.sptk.many b0 = __pthread_enable_asynccancel
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# define CDISABLE br.call.sptk.many b0 = __pthread_disable_asynccancel
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# elif !defined NOT_IN_libc
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# define CENABLE br.call.sptk.many b0 = __libc_enable_asynccancel
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# define CDISABLE br.call.sptk.many b0 = __libc_disable_asynccancel
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# else
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# define CENABLE br.call.sptk.many b0 = __librt_enable_asynccancel
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# define CDISABLE br.call.sptk.many b0 = __librt_disable_asynccancel
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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 out0 = in0;
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#define COPY_ARGS_2 COPY_ARGS_1 mov out1 = in1;
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#define COPY_ARGS_3 COPY_ARGS_2 mov out2 = in2;
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#define COPY_ARGS_4 COPY_ARGS_3 mov out3 = in3;
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#define COPY_ARGS_5 COPY_ARGS_4 mov out4 = in4;
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#define COPY_ARGS_6 COPY_ARGS_5 mov out5 = in5;
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#define COPY_ARGS_7 COPY_ARGS_6 mov out6 = in6;
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# ifndef __ASSEMBLER__
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# define SINGLE_THREAD_P \
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__builtin_expect (THREAD_GETMEM (THREAD_SELF, p_multiple_threads) == 0, 1)
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# else
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# define SINGLE_THREAD_P \
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adds r14 = MULTIPLE_THREADS_OFFSET, r13 ;; ld4 r14 = [r14] ;; cmp4.ne p6, p7 = 0, r14
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# endif
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#elif !defined __ASSEMBLER__
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/* This code should never be used but we define it anyhow. */
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# define SINGLE_THREAD_P (1)
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#endif
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