derek.holloway
7502bf64a4
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50 lines
1.3 KiB
C
Executable File
50 lines
1.3 KiB
C
Executable File
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2023-2024 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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#define _GNU_SOURCE
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#include <stdint.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/syscall.h>
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#include <assert.h>
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#include <errno.h>
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#include <asm/prctl.h>
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int
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main (int argc, char **argv)
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{
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int i;
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int* pi = &i;
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int* pi_tagged;
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/* Enable LAM 57. */
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errno = 0;
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syscall (SYS_arch_prctl, ARCH_ENABLE_TAGGED_ADDR, 6);
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assert_perror (errno);
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/* Add tagging at bit 61. */
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pi_tagged = (int *) ((uintptr_t) pi | (1LL << 60));
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i = 0; /* Breakpoint here. */
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*pi = 1;
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*pi_tagged = 2;
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*pi = 3;
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*pi_tagged = 4;
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return 0;
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}
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