39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright (C) 2018-2022 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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int main (void)
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{
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/* Touch DSCR. Some kernels won't schedule the thread with a DSCR
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altered by ptrace unless the register was used at some point. */
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unsigned long dscr = 0x0;
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/* This is the non-privileged SPR number to access DSCR,
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available since isa 207. */
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asm volatile ("mtspr 3,%0" : : "r" (dscr));
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asm volatile ("tbegin."); // first marker
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asm volatile goto ("bc 12,2,%l[end]"
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:
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:
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:
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: end);
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asm volatile ("tabort. 0");
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end:
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asm volatile ("nop"); // second marker
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return 0;
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}
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