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

   1 /* Unwinder test program.
   2
   3    Copyright 2006, 2007, 2008, 2009 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
  28 int
  29 main (void)
  30 {
  31   gdb2029 ();
  32   optimized_1 ();
  33   return 0;
  34 }
  35
  36 void
  37 optimized_1_marker (void)
  38 {
  39 }
  40
  41 void
  42 gdb2029_marker (void)
  43 {
  44 }
  45
  46 /* A typical PIC prologue from GCC.  */
  47
  48 asm(".text\n"
  49     "    .p2align 3\n"
  50     SYMBOL (gdb2029) ":\n"
  51     "   stwu    %r1, -32(%r1)\n"
  52     "   mflr    %r0\n"
  53     "   bcl-    20,31,.+4\n"
  54     "   stw     %r30, 24(%r1)\n"
  55     "   mflr    %r30\n"
  56     "   stw     %r0, 36(%r1)\n"
  57     "   bl      gdb2029_marker\n"
  58     "   lwz     %r0, 36(%r1)\n"
  59     "   lwz     %r30, 24(%r1)\n"
  60     "   mtlr    %r0\n"
  61     "   addi    %r1, %r1, 32\n"
  62     "   blr");
  63
  64 /* A heavily scheduled prologue.  */
  65 asm(".text\n"
  66     "   .p2align 3\n"
  67     SYMBOL (optimized_1) ":\n"
  68     "   stwu    %r1,-32(%r1)\n"
  69     "   lis     %r9,-16342\n"
  70     "   lis     %r11,-16342\n"
  71     "   mflr    %r0\n"
  72     "   addi    %r11,%r11,3776\n"
  73     "   stmw    %r27,12(%r1)\n"
  74     "   addi    %r31,%r9,3152\n"
  75     "   cmplw   %cr7,%r31,%r11\n"
  76     "   stw     %r0,36(%r1)\n"
  77     "   mr      %r30,%r3\n"
  78     "   bl      optimized_1_marker\n"
  79     "   lwz     %r0,36(%r1)\n"
  80     "   lmw     %r27,12(%r1)\n"
  81     "   addi    %r1,%r1,32\n"
  82     "   blr");