sysdeps/csky/abiv2/__longjmp.S

   1 /* longjmp for C-SKY ABIV2.
   2    Copyright (C) 2018-2019 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sysdep.h>
  20
  21 ENTRY (__longjmp)
  22         mov     a2, a0
  23         mov     a0, a1          /* Get the return value in place.  */
  24         cmpnei  a0, 0
  25         bt      have_return
  26         movi    a0, 1           /* Can't let setjmp() return zero! */
  27 have_return:
  28 #ifdef CHECK_SP
  29         ldw     r10, (a2, 0)    /* Jmpbuf's sp.  */
  30 # ifdef PTR_MANGLE
  31         PTR_DEMANGLE (r10, r10, a3)
  32 # endif
  33         CHECK_SP (r10)
  34 #endif
  35         ldw     sp, (a2, 0)
  36         ldw     lr, (a2, 4)
  37         ldw     r4, (a2, 8)
  38         ldw     r5, (a2, 12)
  39         ldw     r6, (a2, 16)
  40         ldw     r7, (a2, 20)
  41         ldw     r8, (a2, 24)
  42         ldw     r9, (a2, 28)
  43         ldw     r10, (a2, 32)
  44         ldw     r11, (a2, 36)
  45         ldw     r16, (a2, 40)
  46         ldw     r17, (a2, 44)
  47         ldw     r26, (a2, 48)
  48         ldw     r27, (a2, 52)
  49         ldw     r28, (a2, 56)
  50         ldw     r29, (a2, 60)
  51         ldw     r30, (a2, 64)
  52         ldw     r31, (a2, 68)
  53         addi    a2, 72
  54
  55 #ifdef PTR_MANGLE
  56         PTR_DEMANGLE (sp, sp, a3)
  57         PTR_DEMANGLE2 (lr, lr, a3)
  58 #endif
  59         jmp     lr
  60
  61 END (__longjmp)