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/* Unwinder test program.
Copyright 2006 Free Software Foundation, Inc.
This file is part of GDB.
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
void tpcs_frame (void);
int
main (void)
{
tpcs_frame ();
return 0;
}
/* Normally Thumb functions use r7 as the frame pointer. However,
with the GCC option -mtpcs-frame, they may use fp instead. */
asm(".text\n"
" .align 2\n"
" .thumb_func\n"
" .code 16\n"
"tpcs_frame_1:\n"
" sub sp, #16\n"
" push {r7}\n"
" add r7, sp, #20\n"
" str r7, [sp, #8]\n"
" mov r7, pc\n"
" str r7, [sp, #16]\n"
" mov r7, fp\n"
" str r7, [sp, #4]\n"
" mov r7, lr\n"
" str r7, [sp, #12]\n"
" add r7, sp, #16\n"
" mov fp, r7\n"
" mov r7, sl\n"
" push {r7}\n"
/* Trap. */
" .short 0xdffe\n"
" pop {r2}\n"
" mov sl, r2\n"
" pop {r7}\n"
" pop {r1, r2}\n"
" mov fp, r1\n"
" mov sp, r2\n"
" bx lr\n"
" .align 2\n"
" .thumb_func\n"
" .code 16\n"
"tpcs_frame:\n"
" sub sp, #16\n"
" push {r7}\n"
" add r7, sp, #20\n"
" str r7, [sp, #8]\n"
" mov r7, pc\n"
" str r7, [sp, #16]\n"
" mov r7, fp\n"
" str r7, [sp, #4]\n"
" mov r7, lr\n"
" str r7, [sp, #12]\n"
" add r7, sp, #16\n"
" mov fp, r7\n"
" mov r7, sl\n"
" push {r7}\n"
/* Clobber saved regs. */
" mov r7, #0\n"
" mov lr, r7\n"
" bl tpcs_frame_1\n"
" pop {r2}\n"
" mov sl, r2\n"
" pop {r7}\n"
" pop {r1, r2}\n"
" mov fp, r1\n"
" mov sp, r2\n"
" bx lr\n"
);
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