ports/sysdeps/m68k/coldfire/sysdep.h

   1 /* Assembler macros for Coldfire.
   2    Copyright (C) 1998-2014 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 <sysdeps/m68k/sysdep.h>
  20
  21 #ifdef __ASSEMBLER__
  22
  23 /* Perform operation OP with PC-relative SRC as the first operand and
  24    DST as the second.  TMP is available as a temporary if needed.  */
  25 # define PCREL_OP(OP, SRC, DST, TMP) \
  26   move.l &SRC - ., TMP; OP (-8, %pc, TMP), DST
  27
  28 /* Load the address of the GOT into register R.  */
  29 # define LOAD_GOT(R) \
  30   move.l &_GLOBAL_OFFSET_TABLE_@GOTPC, R; \
  31   lea (-6, %pc, R), R
  32
  33 #else
  34
  35 /* As above, but PC is the spelling of the PC register.  We need this
  36    so that the macro can be used in both normal and extended asms.  */
  37 # define PCREL_OP(OP, SRC, DST, TMP, PC) \
  38   "move.l #" SRC " - ., " TMP "\n\t" OP " (-8, " PC ", " TMP "), " DST
  39
  40 #endif  /* __ASSEMBLER__ */