sysdeps/sh/sh4/setjmp.S

   1 /* setjmp for SH4.
   2    Copyright (C) 1999-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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 <jmpbuf-offsets.h>
  21
  22 ENTRY (__sigsetjmp)
  23         /* Save registers */
  24 #ifdef __SH_FPU_ANY__
  25         add     #JB_SIZE, r4
  26         fmov.s  fr15, @-r4
  27         fmov.s  fr14, @-r4
  28         fmov.s  fr13, @-r4
  29         fmov.s  fr12, @-r4
  30         sts.l   fpscr, @-r4
  31 #else
  32         add     #(JB_SIZE - 4 * 5), r4
  33 #endif /* __SH_FPU_ANY__ */
  34         stc.l   gbr, @-r4
  35 #ifdef PTR_MANGLE
  36         sts     pr, r2
  37         PTR_MANGLE (r2, r1)
  38         mov.l   r2, @-r4
  39         mov     r15, r2
  40         PTR_MANGLE2 (r2, r1)
  41         mov.l   r2, @-r4
  42         mov     r14, r2
  43         PTR_MANGLE2 (r2, r1)
  44         mov.l   r2, @-r4
  45         mov     #0, r1
  46 #else
  47         sts.l   pr, @-r4
  48         mov.l   r15, @-r4
  49         mov.l   r14, @-r4
  50 #endif
  51         mov.l   r13, @-r4
  52         mov.l   r12, @-r4
  53         mov.l   r11, @-r4
  54         mov.l   r10, @-r4
  55         mov.l   r9, @-r4
  56         mov.l   r8, @-r4
  57
  58 #if IS_IN (rtld)
  59         /* In ld.so we never save the signal mask.  */
  60         rts
  61          mov    #0, r0
  62 #else
  63         /* Make a tail call to __sigjmp_save; it takes the same args.  */
  64 # ifdef SHARED
  65         mov.l   1f, r1
  66         mova    1f, r0
  67         bra     2f
  68          add    r1, r0
  69         .align  2
  70 1:
  71         .long   _GLOBAL_OFFSET_TABLE_
  72 2:
  73         mov.l   .L1, r1
  74         mov.l   @(r0,r1), r1
  75         jmp     @r1
  76          nop
  77         .align  2
  78 .L1:
  79         .long   C_SYMBOL_NAME(__sigjmp_save@GOT)
  80 # else
  81         mov.l   .L1, r1
  82         jmp     @r1
  83          nop
  84         .align  2
  85 .L1:
  86         .long   C_SYMBOL_NAME(__sigjmp_save)
  87 # endif
  88 #endif
  89 END (__sigsetjmp)