sysdeps/mips/machine-gmon.h

   1 /* Machine-specific calling sequence for `mcount' profiling function.  MIPS
   2    Copyright (C) 1996, 1997, 2000, 2001 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #define _MCOUNT_DECL static void __mcount
  21
  22 /* Call __mcount with our the return PC for our caller,
  23    and the return PC our caller will return to.  */
  24 #ifdef __PIC__
  25 #define CPLOAD ".cpload $25;"
  26 #else
  27 #define CPLOAD
  28 #endif
  29
  30 #define MCOUNT asm(\
  31         ".globl _mcount;" \
  32         ".align 2;" \
  33         ".type _mcount,@function;" \
  34         "_mcount:;" \
  35         ".set noreorder;" \
  36         ".set noat;" \
  37         CPLOAD \
  38         "sw $4,8($29);" \
  39         "sw $5,12($29);" \
  40         "sw $6,16($29);" \
  41         "sw $7,20($29);" \
  42         "sw $1,0($29);" \
  43         "sw $31,4($29);" \
  44         "move $5,$31;" \
  45         "move $4,$1;" \
  46         "jal __mcount;" \
  47         "nop;" \
  48         "lw $4,8($29);" \
  49         "lw $5,12($29);" \
  50         "lw $6,16($29);" \
  51         "lw $7,20($29);" \
  52         "lw $31,4($29);" \
  53         "lw $1,0($29);" \
  54         "addu $29,$29,8;" \
  55         "j $31;" \
  56         "move $31,$1;" \
  57         ".set reorder;" \
  58         ".set at");