gdb/testsuite/gdb.arch/powerpc64-prologue.c

   1 /* Unwinder test program.
   2
   3    Copyright 2006-2024 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifdef SYMBOL_PREFIX
  21 #define SYMBOL(str)     SYMBOL_PREFIX #str
  22 #else
  23 #define SYMBOL(str)     #str
  24 #endif
  25
  26 void gdb2029 (void);
  27 void optimized_1 (void);
  28
  29 int
  30 main (void)
  31 {
  32   gdb2029 ();
  33   optimized_1 ();
  34   return 0;
  35 }
  36
  37 void
  38 optimized_1_marker (void)
  39 {
  40 }
  41
  42 void
  43 gdb2029_marker (void)
  44 {
  45 }
  46
  47 /* A typical PIC prologue from GCC.  */
  48 /* This is a ppc64(le) variation of the code as seen
  49    in powerpc-prologue.c.  */
  50
  51 asm(".text\n"
  52     "   .p2align 3\n"
  53     SYMBOL (gdb2029) ":\n"
  54     "   mflr    %r0\n"
  55     "   std     %r0,16(%r1)\n"
  56     "   std     %r31,-8(%r1)\n"
  57     "   stdu    %r1,-128(%r1)\n"
  58     "   mr      %r31,%r1\n"
  59     "   mr      %r9,%r3\n"
  60     "   stw     %r9,176(%r31)\n"
  61     "   lwz     %r9,176(%r31)\n"
  62     "   bl      gdb2029_marker\n"
  63     "   nop\n"
  64     "   mr      %r9,%r3\n"
  65     "   mr      %r3,%r9\n"
  66     "   addi    %r1,%r31,128\n"
  67     "   ld      %r0,16(%r1)\n"
  68     "   mtlr    %r0\n"
  69     "   ld      %r31,-8(%r1)\n"
  70     "   blr");
  71
  72 /* A heavily scheduled prologue.  */
  73 asm(".text\n"
  74     "   .p2align 3\n"
  75     SYMBOL (optimized_1) ":\n"
  76     "   stdu    %r1,-32(%r1)\n"
  77     "   lis     %r9,-16342\n"
  78     "   lis     %r11,-16342\n"
  79     "   mflr    %r0\n"
  80     "   addi    %r11,%r11,3776\n"
  81     "   std     %r30,12(%r1)\n"
  82     "   addi    %r31,%r9,3152\n"
  83     "   cmplw   %cr7,%r31,%r11\n"
  84     "   std     %r0,36(%r1)\n"
  85     "   mr      %r30,%r3\n"
  86     "   bl      optimized_1_marker\n"
  87     "   nop     \n"
  88     "   ld      %r0,36(%r1)\n"
  89     "   mtlr    %r0\n"
  90     "   ld      %r30,12(%r1)\n"
  91     "   addi    %r1,%r1,32\n"
  92     "   blr");