sysdeps/mips/machine-gmon.h

   1 /* Machine-specific calling sequence for `mcount' profiling function.  MIPS
   2    Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004
   3         Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <sgidefs.h>
  21
  22 #define _MCOUNT_DECL(frompc,selfpc) \
  23 static void __attribute_used__ __mcount (u_long frompc, u_long selfpc)
  24
  25 /* Call __mcount with the return PC for our caller,
  26    and the return PC our caller will return to.  */
  27
  28 #if _MIPS_SIM == _ABIO32
  29
  30 #ifdef __PIC__
  31 # define CPLOAD ".cpload $25;"
  32 # define CPRESTORE ".cprestore 44\n\t"
  33 #else
  34 # define CPLOAD
  35 # define CPRESTORE
  36 #endif
  37
  38 #define MCOUNT asm(\
  39         ".globl _mcount;\n\t" \
  40         ".align 2;\n\t" \
  41         ".type _mcount,@function;\n\t" \
  42         ".ent _mcount\n\t" \
  43         "_mcount:\n\t" \
  44         ".frame $sp,44,$31\n\t" \
  45         ".set noreorder;\n\t" \
  46         ".set noat;\n\t" \
  47         CPLOAD \
  48         "subu $29,$29,48;\n\t" \
  49         CPRESTORE \
  50         "sw $4,24($29);\n\t" \
  51         "sw $5,28($29);\n\t" \
  52         "sw $6,32($29);\n\t" \
  53         "sw $7,36($29);\n\t" \
  54         "sw $2,40($29);\n\t" \
  55         "sw $1,16($29);\n\t" \
  56         "sw $31,20($29);\n\t" \
  57         "move $5,$31;\n\t" \
  58         "move $4,$1;\n\t" \
  59         "jal __mcount;\n\t" \
  60         "nop;\n\t" \
  61         "lw $4,24($29);\n\t" \
  62         "lw $5,28($29);\n\t" \
  63         "lw $6,32($29);\n\t" \
  64         "lw $7,36($29);\n\t" \
  65         "lw $2,40($29);\n\t" \
  66         "lw $31,20($29);\n\t" \
  67         "lw $1,16($29);\n\t" \
  68         "addu $29,$29,56;\n\t" \
  69         "j $31;\n\t" \
  70         "move $31,$1;\n\t" \
  71         ".set reorder;\n\t" \
  72         ".set at\n\t" \
  73         ".end _mcount");
  74
  75 #else
  76
  77 #ifdef __PIC__
  78 # define CPSETUP ".cpsetup $25, 88, _mcount;"
  79 # define CPRETURN ".cpreturn;"
  80 #else
  81 # define CPSETUP
  82 # define CPRETURN
  83 #endif
  84
  85 #if _MIPS_SIM == _ABIN32
  86 # define PTR_ADDU_STRING "add" /* no u */
  87 # define PTR_SUBU_STRING "sub" /* no u */
  88 #elif _MIPS_SIM == _ABI64
  89 # define PTR_ADDU_STRING "daddu"
  90 # define PTR_SUBU_STRING "dsubu"
  91 #else
  92 # error "Unknown ABI"
  93 #endif
  94
  95 #define MCOUNT asm(\
  96         ".globl _mcount;\n\t" \
  97         ".align 3;\n\t" \
  98         ".type _mcount,@function;\n\t" \
  99         ".ent _mcount\n\t" \
 100         "_mcount:\n\t" \
 101         ".frame $sp,88,$31\n\t" \
 102         ".set noreorder;\n\t" \
 103         ".set noat;\n\t" \
 104         PTR_SUBU_STRING " $29,$29,96;\n\t" \
 105         CPSETUP \
 106         "sd $4,24($29);\n\t" \
 107         "sd $5,32($29);\n\t" \
 108         "sd $6,40($29);\n\t" \
 109         "sd $7,48($29);\n\t" \
 110         "sd $8,56($29);\n\t" \
 111         "sd $9,64($29);\n\t" \
 112         "sd $10,72($29);\n\t" \
 113         "sd $11,80($29);\n\t" \
 114         "sd $2,16($29);\n\t" \
 115         "sd $1,0($29);\n\t" \
 116         "sd $31,8($29);\n\t" \
 117         "move $5,$31;\n\t" \
 118         "move $4,$1;\n\t" \
 119         "jal __mcount;\n\t" \
 120         "nop;\n\t" \
 121         "ld $4,24($29);\n\t" \
 122         "ld $5,32($29);\n\t" \
 123         "ld $6,40($29);\n\t" \
 124         "ld $7,48($29);\n\t" \
 125         "ld $8,56($29);\n\t" \
 126         "ld $9,64($29);\n\t" \
 127         "ld $10,72($29);\n\t" \
 128         "ld $11,80($29);\n\t" \
 129         "ld $2,16($29);\n\t" \
 130         "ld $31,8($29);\n\t" \
 131         "ld $1,0($29);\n\t" \
 132         CPRETURN \
 133         PTR_ADDU_STRING " $29,$29,96;\n\t" \
 134         "j $31;\n\t" \
 135         "move $31,$1;\n\t" \
 136         ".set reorder;\n\t" \
 137         ".set at\n\t" \
 138         ".end _mcount");
 139
 140 #endif