/* This testcase is part of GDB, the GNU debugger.
Copyright 2004-2020 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
void li_stw (void);
void stack_check_probe_1 (void);
void stack_check_probe_2 (void);
void stack_check_probe_loop_1 (void);
void stack_check_probe_loop_2 (void);
int
main (void)
{
li_stw ();
stack_check_probe_1 ();
stack_check_probe_2 ();
stack_check_probe_loop_1 ();
stack_check_probe_loop_2 ();
return 0;
}
/* Asm for procedure li_stw().
The purpose of this function is to verify that GDB does not
include the li insn as part of the function prologue (only part
of the prologue if part of a pair of insns saving vector registers).
Similarly, GDB should not include the stw insn following the li insn,
because the source register is not used for parameter passing. */
asm (" .csect .text[PR]\n"
" .align 2\n"
" .lglobl .li_stw\n"
" .csect li_stw[DS]\n"
"li_stw:\n"
" .long .li_stw, TOC[tc0], 0\n"
" .csect .text[PR]\n"
".li_stw:\n"
" stw 31,-4(1)\n"
" stwu 1,-48(1)\n"
" mr 31,1\n"
" stw 11,24(31)\n"
" li 0,8765\n"
" stw 0,28(31)\n"
" lwz 1,0(1)\n"
" lwz 31,-4(1)\n"
" blr\n");
/* Asm for procedure stack_check_probe_1().
The purpose of this function is to verify that GDB can skip the stack
checking probing at the beginning of the prologue. */
asm (" .csect .text[PR]\n"
" .align 2\n"
" .globl stack_check_probe_1\n"
" .globl .stack_check_probe_1\n"
" .csect stack_check_probe_1[DS]\n"
"stack_check_probe_1:\n"
" .long .stack_check_probe_1, TOC[tc0], 0\n"
" .csect .text[PR]\n"
".stack_check_probe_1:\n"
" stw 0,-12336(1)\n"
" stw 31,-4(1)\n"
" stwu 1,-48(1)\n"
" mr 31,1\n"
" lwz 1,0(1)\n"
" lwz 31,-4(1)\n"
" blr\n");
/* Asm for procedure stack_check_probe_2 ().
Similar to stack_check_probe_1, but with a different probing sequence
(several probes). */
asm (" .csect .text[PR]\n"
" .align 2\n"
" .globl stack_check_probe_2\n"
" .globl .stack_check_probe_2\n"
" .csect stack_check_probe_2[DS]\n"
"stack_check_probe_2:\n"
" .long .stack_check_probe_2, TOC[tc0], 0\n"
" .csect .text[PR]\n"
".stack_check_probe_2:\n"
" stw 0,-16384(1)\n"
" stw 0,-20480(1)\n"
" stw 0,-24576(1)\n"
" stw 0,-28672(1)\n"
" stw 0,-28752(1)\n"
" mflr 0\n"
" stw 31,-4(1)\n"
" stw 0,8(1)\n"
" stwu 1,-16464(1)\n"
" mr 31,1\n"
" lwz 1,0(1)\n"
" lwz 0,8(1)\n"
" mtlr 0\n"
" lwz 31,-4(1)\n"
" blr\n");
/* Asm for procedure stack_check_probe_loop_1() and stack_check_probe_loop_2().
Similar to stack_check_probe_1, but with a different probing sequence
(probing loop). */
asm (" .csect .text[PR]\n"
" .align 2\n"
" .globl stack_check_probe_loop_1\n"
" .globl .stack_check_probe_loop_1\n"
" .csect stack_check_probe_loop_1[DS]\n"
"stack_check_probe_loop_1:\n"
" .long .stack_check_probe_loop_1, TOC[tc0], 0\n"
" .csect .text[PR]\n"
".stack_check_probe_loop_1:\n"
" addi 12,1,-12288\n"
" lis 0,-8\n"
" ori 0,0,4096\n"
" add 0,12,0\n"
"LPSRL1..0:\n"
" cmpw 0,12,0\n"
" beq 0,LPSRE1..0\n"
" addi 12,12,-4096\n"
" stw 0,0(12)\n"
" b LPSRL1..0\n"
"LPSRE1..0:\n"
" stw 0,-4080(12)\n"
" mflr 0\n"
" stw 31,-4(1)\n"
" stw 0,8(1)\n"
" lis 0,0xfff8\n"
" ori 0,0,16\n"
" stwux 1,1,0\n"
" mr 31,1\n"
" lwz 1,0(1)\n"
" lwz 0,8(1)\n"
" mtlr 0\n"
" lwz 31,-4(1)\n"
" blr\n");
asm (" .csect .text[PR]\n"
" .align 2\n"
" .globl stack_check_probe_loop_2\n"
" .globl .stack_check_probe_loop_2\n"
" .csect stack_check_probe_loop_2[DS]\n"
"stack_check_probe_loop_2:\n"
" .long .stack_check_probe_loop_2, TOC[tc0], 0\n"
" .csect .text[PR]\n"
".stack_check_probe_loop_2:\n"
" addi 12,1,-12288\n"
" lis 0,-8\n"
" add 0,12,0\n"
"LPSRL2..0:\n"
" cmpw 0,12,0\n"
" beq 0,LPSRE2..0\n"
" addi 12,12,-4096\n"
" stw 0,0(12)\n"
" b LPSRL2..0\n"
"LPSRE2..0:\n"
" mflr 0\n"
" stw 31,-4(1)\n"
" stw 0,8(1)\n"
" lis 0,0xfff8\n"
" ori 0,0,16\n"
" stwux 1,1,0\n"
" mr 31,1\n"
" lwz 1,0(1)\n"
" lwz 0,8(1)\n"
" mtlr 0\n"
" lwz 31,-4(1)\n"
" blr\n");