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

   1 /* Copyright (C) 2002-2014 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 <sysdep.h>
  20 #include <tls.h>
  21 #ifndef __ASSEMBLER__
  22 # include <nptl/pthreadP.h>
  23 #endif
  24
  25 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
  26
  27 # undef PSEUDO
  28 # define PSEUDO(name, syscall_name, args)       \
  29         .text;                                  \
  30         .globl          __syscall_error;        \
  31 ENTRY(name)                                     \
  32         ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1;\
  33         brnz,pn %g1, 1f;                        \
  34 .type   __##syscall_name##_nocancel,@function;  \
  35 .globl  __##syscall_name##_nocancel;            \
  36 __##syscall_name##_nocancel:                    \
  37          mov SYS_ify(syscall_name), %g1;        \
  38         ta 0x6d;                                \
  39         bcc,pt %xcc, 8f;                        \
  40          mov %o7, %g1;                          \
  41         call __syscall_error;                   \
  42          mov %g1, %o7;                          \
  43 8:      jmpl %o7 + 8, %g0;                      \
  44          nop;                                   \
  45 .size   __##syscall_name##_nocancel,.-__##syscall_name##_nocancel;\
  46 1:      save %sp, -192, %sp;                    \
  47         cfi_def_cfa_register(%fp);              \
  48         cfi_window_save;                        \
  49         cfi_register(%o7, %i7);                 \
  50         CENABLE;                                \
  51          nop;                                   \
  52         mov %o0, %l0;                           \
  53         COPY_ARGS_##args                        \
  54         mov SYS_ify(syscall_name), %g1;         \
  55         ta 0x6d;                                \
  56         bcc,pt %xcc, 1f;                        \
  57          mov %o0, %l1;                          \
  58         CDISABLE;                               \
  59          mov %l0, %o0;                          \
  60         call __syscall_error;                   \
  61          mov %l1, %o0;                          \
  62         ba,pt %xcc, 2f;                         \
  63          mov -1, %l1;                           \
  64 1:      CDISABLE;                               \
  65          mov %l0, %o0;                          \
  66 2:      jmpl %i7 + 8, %g0;                      \
  67          restore %g0, %l1, %o0;
  68
  69 # ifdef IS_IN_libpthread
  70 #  define CENABLE       call __pthread_enable_asynccancel
  71 #  define CDISABLE      call __pthread_disable_asynccancel
  72 # elif !defined NOT_IN_libc
  73 #  define CENABLE       call __libc_enable_asynccancel
  74 #  define CDISABLE      call __libc_disable_asynccancel
  75 # elif defined IS_IN_librt
  76 #  define CENABLE       call __librt_enable_asynccancel
  77 #  define CDISABLE      call __librt_disable_asynccancel
  78 # else
  79 #  error Unsupported library
  80 # endif
  81
  82 #define COPY_ARGS_0     /* Nothing */
  83 #define COPY_ARGS_1     COPY_ARGS_0 mov %i0, %o0;
  84 #define COPY_ARGS_2     COPY_ARGS_1 mov %i1, %o1;
  85 #define COPY_ARGS_3     COPY_ARGS_2 mov %i2, %o2;
  86 #define COPY_ARGS_4     COPY_ARGS_3 mov %i3, %o3;
  87 #define COPY_ARGS_5     COPY_ARGS_4 mov %i4, %o4;
  88 #define COPY_ARGS_6     COPY_ARGS_5 mov %i5, %o5;
  89
  90 # ifndef __ASSEMBLER__
  91 #  define SINGLE_THREAD_P \
  92   __builtin_expect (THREAD_GETMEM (THREAD_SELF,                               \
  93                                    header.multiple_threads) == 0, 1)
  94 # else
  95 #  define SINGLE_THREAD_P ld [%g7 + MULTIPLE_THREADS_OFFSET], %g1
  96 # endif
  97
  98 #elif !defined __ASSEMBLER__
  99
 100 # define SINGLE_THREAD_P (1)
 101 # define NO_CANCELLATION 1
 102
 103 #endif
 104
 105 #ifndef __ASSEMBLER__
 106 # define RTLD_SINGLE_THREAD_P \
 107   __builtin_expect (THREAD_GETMEM (THREAD_SELF, \
 108                                    header.multiple_threads) == 0, 1)
 109 #endif