sysdeps/mips/machine-gmon.h

   1 /* Machine-specific calling sequence for `mcount' profiling function.  MIPS
   2    Copyright (C) 1996-2024 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 <sgidefs.h>
  20
  21 #define _MCOUNT_DECL(frompc,selfpc) \
  22 static void __attribute_used__ __mcount (u_long frompc, u_long selfpc)
  23
  24 /* Call __mcount with the return PC for our caller,
  25    and the return PC our caller will return to.  */
  26
  27 #if _MIPS_SIM == _ABIO32
  28
  29 #ifdef __PIC__
  30 # define CPLOAD ".cpload $25;"
  31 # define CPRESTORE ".cprestore 44\n\t"
  32 #else
  33 # define CPLOAD
  34 # define CPRESTORE
  35 #endif
  36
  37 #define MCOUNT asm(\
  38         ".globl _mcount;\n\t" \
  39         ".align 2;\n\t" \
  40         ".set push;\n\t" \
  41         ".set nomips16;\n\t" \
  42         ".type _mcount,@function;\n\t" \
  43         ".ent _mcount\n\t" \
  44         "_mcount:\n\t" \
  45         ".frame $sp,44,$31\n\t" \
  46         ".set noreorder;\n\t" \
  47         ".set noat;\n\t" \
  48         CPLOAD \
  49         "subu $29,$29,48;\n\t" \
  50         CPRESTORE \
  51         "sw $4,24($29);\n\t" \
  52         "sw $5,28($29);\n\t" \
  53         "sw $6,32($29);\n\t" \
  54         "sw $7,36($29);\n\t" \
  55         "sw $2,40($29);\n\t" \
  56         "sw $1,16($29);\n\t" \
  57         "sw $31,20($29);\n\t" \
  58         "move $5,$31;\n\t" \
  59         "move $4,$1;\n\t" \
  60         "jal __mcount;\n\t" \
  61         "nop;\n\t" \
  62         "lw $4,24($29);\n\t" \
  63         "lw $5,28($29);\n\t" \
  64         "lw $6,32($29);\n\t" \
  65         "lw $7,36($29);\n\t" \
  66         "lw $2,40($29);\n\t" \
  67         "lw $31,20($29);\n\t" \
  68         "lw $1,16($29);\n\t" \
  69         "addu $29,$29,56;\n\t" \
  70         "j $31;\n\t" \
  71         "move $31,$1;\n\t" \
  72         ".end _mcount;\n\t" \
  73         ".set pop");
  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 # if !defined __mips_isa_rev || __mips_isa_rev < 6
  87 #  define PTR_ADDU_STRING "add" /* no u */
  88 #  define PTR_SUBU_STRING "sub" /* no u */
  89 # else
  90 #  define PTR_ADDU_STRING "addu"
  91 #  define PTR_SUBU_STRING "subu"
  92 # endif
  93 #elif _MIPS_SIM == _ABI64
  94 # define PTR_ADDU_STRING "daddu"
  95 # define PTR_SUBU_STRING "dsubu"
  96 #else
  97 # error "Unknown ABI"
  98 #endif
  99
 100 #define MCOUNT asm(\
 101         ".globl _mcount;\n\t" \
 102         ".align 3;\n\t" \
 103         ".set push;\n\t" \
 104         ".set nomips16;\n\t" \
 105         ".type _mcount,@function;\n\t" \
 106         ".ent _mcount\n\t" \
 107         "_mcount:\n\t" \
 108         ".frame $sp,88,$31\n\t" \
 109         ".set noreorder;\n\t" \
 110         ".set noat;\n\t" \
 111         PTR_SUBU_STRING " $29,$29,96;\n\t" \
 112         CPSETUP \
 113         "sd $4,24($29);\n\t" \
 114         "sd $5,32($29);\n\t" \
 115         "sd $6,40($29);\n\t" \
 116         "sd $7,48($29);\n\t" \
 117         "sd $8,56($29);\n\t" \
 118         "sd $9,64($29);\n\t" \
 119         "sd $10,72($29);\n\t" \
 120         "sd $11,80($29);\n\t" \
 121         "sd $2,16($29);\n\t" \
 122         "sd $1,0($29);\n\t" \
 123         "sd $31,8($29);\n\t" \
 124         "move $5,$31;\n\t" \
 125         "move $4,$1;\n\t" \
 126         "jal __mcount;\n\t" \
 127         "nop;\n\t" \
 128         "ld $4,24($29);\n\t" \
 129         "ld $5,32($29);\n\t" \
 130         "ld $6,40($29);\n\t" \
 131         "ld $7,48($29);\n\t" \
 132         "ld $8,56($29);\n\t" \
 133         "ld $9,64($29);\n\t" \
 134         "ld $10,72($29);\n\t" \
 135         "ld $11,80($29);\n\t" \
 136         "ld $2,16($29);\n\t" \
 137         "ld $31,8($29);\n\t" \
 138         "ld $1,0($29);\n\t" \
 139         CPRETURN \
 140         PTR_ADDU_STRING " $29,$29,96;\n\t" \
 141         "j $31;\n\t" \
 142         "move $31,$1;\n\t" \
 143         ".end _mcount;\n\t" \
 144         ".set pop");
 145
 146 #endif