libpthread/linuxthreads/sysdeps/unix/sysv/linux/sparc/sparc64/sysdep-cancel.h

   1 /* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <tls.h>
  20 #ifndef __ASSEMBLER__
  21 # include <linuxthreads/internals.h>
  22 #endif
  23
  24 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
  25
  26 # undef PSEUDO
  27 # define PSEUDO(name, syscall_name, args)                                     \
  28         .text;                                                                \
  29 ENTRY(name)                                                                   \
  30         ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;                              \
  31         brnz,pn %g1, 1f;                                                      \
  32          mov SYS_ify(syscall_name), %g1;                                      \
  33         ta 0x6d;                                                              \
  34         bcs,pn %xcc, __syscall_error_handler;                                 \
  35          nop;                                                                 \
  36         .subsection 2;                                                        \
  37 1:      save %sp, -192, %sp;                                                  \
  38         CENABLE;                                                              \
  39          nop;                                                                 \
  40         mov %o0, %l0;                                                         \
  41         COPY_ARGS_##args                                                      \
  42         mov SYS_ify(syscall_name), %g1;                                       \
  43         ta 0x6d;                                                              \
  44         bcs,pn %xcc, __syscall_error_handler2;                                \
  45          mov %o0, %l1;                                                        \
  46         CDISABLE;                                                             \
  47          mov %l0, %o0;                                                        \
  48         jmpl %i7 + 8, %g0;                                                    \
  49          restore %g0, %l1, %o0;                                               \
  50         .previous;                                                            \
  51         SYSCALL_ERROR_HANDLER                                                 \
  52         SYSCALL_ERROR_HANDLER2
  53
  54 #define SYSCALL_ERROR_HANDLER2                                                \
  55 SYSCALL_ERROR_HANDLER_ENTRY(__syscall_error_handler2)                         \
  56         .global __errno_location;                                             \
  57         .type   __errno_location,@function;                                   \
  58         CDISABLE;                                                             \
  59          mov    %l0, %o0;                                                     \
  60         call    __errno_location;                                             \
  61          nop;                                                                 \
  62         st      %l1, [%o0];                                                   \
  63         jmpl    %i7 + 8, %g0;                                                 \
  64          restore %g0, -1, %o0;                                                \
  65         .previous;
  66
  67 # ifdef IS_IN_libpthread
  68 #  define CENABLE       call __pthread_enable_asynccancel
  69 #  define CDISABLE      call __pthread_disable_asynccancel
  70 # elif !defined NOT_IN_libc
  71 #  define CENABLE       call __libc_enable_asynccancel
  72 #  define CDISABLE      call __libc_disable_asynccancel
  73 # else
  74 #  define CENABLE       call __librt_enable_asynccancel
  75 #  define CDISABLE      call __librt_disable_asynccancel
  76 # endif
  77
  78 #define COPY_ARGS_0     /* Nothing */
  79 #define COPY_ARGS_1     COPY_ARGS_0 mov %i0, %o0;
  80 #define COPY_ARGS_2     COPY_ARGS_1 mov %i1, %o1;
  81 #define COPY_ARGS_3     COPY_ARGS_2 mov %i2, %o2;
  82 #define COPY_ARGS_4     COPY_ARGS_3 mov %i3, %o3;
  83 #define COPY_ARGS_5     COPY_ARGS_4 mov %i4, %o4;
  84 #define COPY_ARGS_6     COPY_ARGS_5 mov %i5, %o5;
  85
  86 # ifndef __ASSEMBLER__
  87 #  define SINGLE_THREAD_P \
  88   __builtin_expect (THREAD_GETMEM (THREAD_SELF,                               \
  89                                    p_header.data.multiple_threads) == 0, 1)
  90 # else
  91 #  define SINGLE_THREAD_P ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1
  92 # endif
  93
  94 #elif !defined __ASSEMBLER__
  95
  96 /* This code should never be used but we define it anyhow.  */
  97 # define SINGLE_THREAD_P (1)
  98
  99 #endif