sysdeps/s390/s390-64/s390x-mcount.S

   1 /* 64 bit S/390-specific implementation of profiling support.
   2    Copyright (C) 2018-2021 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 #define MCOUNT_SYMBOL _mcount
  20 #define MCOUNT_CALLER_OFF 232   /* Pushed by the _mcount stub.  */
  21 #define MCOUNT_CALLEE_REG 14    /* Normal calling convention.  */
  22 #define MCOUNT_RETURN_REG 14
  23 #include "s390x-mcount.h"
  24 #undef MCOUNT_SYMBOL
  25 #undef MCOUNT_CALLER_OFF
  26 #undef MCOUNT_CALLEE_REG
  27 #undef MCOUNT_RETURN_REG
  28
  29 #define MCOUNT_SYMBOL __fentry__
  30 #define MCOUNT_CALLER_OFF 160   /* Saved %r14.  */
  31 #define MCOUNT_CALLEE_REG 0     /* __fentry__ calling convention.  */
  32 #define MCOUNT_RETURN_REG 1     /* Cannot return via %r0.  */
  33 #include "s390x-mcount.h"
  34 #undef MCOUNT_SYMBOL
  35 #undef MCOUNT_CALLER_OFF
  36 #undef MCOUNT_CALLEE_REG
  37 #undef MCOUNT_RETURN_REG
  38
  39 #undef mcount
  40 weak_alias (_mcount, mcount)