1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
/* 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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/* AArch64 SVE feature check. This test serves as a way for the GDB testsuite
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to verify that a target supports SVE at runtime, and also reports data
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about the various supported SVE vector lengths. */
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#include <stdio.h>
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#include <sys/auxv.h>
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#include <sys/prctl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#ifndef HWCAP_SVE
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#define HWCAP_SVE (1 << 22)
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#endif
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#ifndef PR_SVE_SET_VL
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#define PR_SVE_SET_VL 50
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#define PR_SVE_GET_VL 51
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#define PR_SVE_VL_LEN_MASK 0xffff
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#endif
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static int get_vl_size ()
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{
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int res = prctl (PR_SVE_GET_VL, 0, 0, 0, 0);
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if (res < 0)
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return -1;
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return (res & PR_SVE_VL_LEN_MASK);
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}
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static int set_vl_size (int new_vl)
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{
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if (prctl (PR_SVE_SET_VL, new_vl, 0, 0, 0, 0) < 0)
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return -1;
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if (get_vl_size () != new_vl)
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return -1;
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return 0;
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}
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static void
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dummy ()
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{
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}
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#define VL_MIN 16
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#define VL_MAX 256
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#define VL_INCREMENT 16
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int
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main (int argc, char **argv)
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{
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/* Number of supported SVE vector lengths. */
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size_t supported_vl_count = 0;
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/* Vector containing the various supported SVE vector lengths. */
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size_t supported_vl[16];
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if (getauxval (AT_HWCAP) & HWCAP_SVE)
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{
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for (int vl = VL_MIN; vl <= VL_MAX; vl += VL_INCREMENT)
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{
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if (set_vl_size (vl) == 0)
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{
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supported_vl[supported_vl_count] = vl;
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supported_vl_count++;
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}
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}
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}
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return 0; /* stop here */
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}
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