mirror of
git://sourceware.org/git/glibc.git
synced 2025-03-06 20:58:33 +01:00
a2b0ff98a0
Add __attribute_optimization_barrier__ to disable inlining and cloning on a function. For Clang, expand it to __attribute__ ((optnone)) Otherwise, expand it to __attribute__ ((noinline, clone)) Co-Authored-By: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Sam James <sam@gentoo.org>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/* Test TLSDESC relocation with AMX.
|
|
Copyright (C) 2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdbool.h>
|
|
#include <asm/prctl.h>
|
|
#include <support/check.h>
|
|
#include "tst-gnu2-tls2-amx.h"
|
|
|
|
extern int arch_prctl (int, ...);
|
|
|
|
#define X86_XSTATE_TILECFG_ID 17
|
|
#define X86_XSTATE_TILEDATA_ID 18
|
|
|
|
/* Initialize tile config. */
|
|
__attribute_optimization_barrier__
|
|
static void
|
|
init_tile_config (__tilecfg *tileinfo)
|
|
{
|
|
int i;
|
|
tileinfo->palette_id = 1;
|
|
tileinfo->start_row = 0;
|
|
|
|
tileinfo->colsb[0] = MAX_ROWS;
|
|
tileinfo->rows[0] = MAX_ROWS;
|
|
|
|
for (i = 1; i < 4; ++i)
|
|
{
|
|
tileinfo->colsb[i] = MAX_COLS;
|
|
tileinfo->rows[i] = MAX_ROWS;
|
|
}
|
|
|
|
_tile_loadconfig (tileinfo);
|
|
}
|
|
|
|
static bool
|
|
enable_amx (void)
|
|
{
|
|
uint64_t bitmask;
|
|
if (arch_prctl (ARCH_GET_XCOMP_PERM, &bitmask) != 0)
|
|
return false;
|
|
|
|
if ((bitmask & (1 << X86_XSTATE_TILECFG_ID)) == 0)
|
|
return false;
|
|
|
|
if (arch_prctl (ARCH_REQ_XCOMP_PERM, X86_XSTATE_TILEDATA_ID) != 0)
|
|
return false;
|
|
|
|
/* Load tile configuration. */
|
|
__tilecfg tile_data = { 0 };
|
|
init_tile_config (&tile_data);
|
|
|
|
return true;
|
|
}
|
|
|
|
/* An architecture can define it to clobber caller-saved registers in
|
|
malloc below to verify that the implicit TLSDESC call won't change
|
|
caller-saved registers. */
|
|
static void
|
|
clear_tile_register (void)
|
|
{
|
|
_tile_zero (2);
|
|
}
|
|
|
|
#define MOD(i) "tst-gnu2-tls2-amx-mod" #i ".so"
|
|
#define IS_SUPPORTED() enable_amx ()
|
|
#define PREPARE_MALLOC() clear_tile_register ()
|
|
|
|
#include <elf/tst-gnu2-tls2.c>
|