581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
/* Test if POWER vscr read by ucontext.
|
|
Copyright (C) 2018-2022 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <support/check.h>
|
|
#include <sys/auxv.h>
|
|
#include <ucontext.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <altivec.h>
|
|
|
|
#define SAT 0x1
|
|
|
|
/* This test is supported only on POWER 5 or higher. */
|
|
#define PPC_CPU_SUPPORTED (PPC_FEATURE_POWER5 | PPC_FEATURE_POWER5_PLUS \
|
|
| PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_ARCH_2_06 \
|
|
| PPC_FEATURE2_ARCH_2_07)
|
|
static int
|
|
do_test (void)
|
|
{
|
|
|
|
if (!(getauxval(AT_HWCAP2) & PPC_CPU_SUPPORTED))
|
|
{
|
|
if (!(getauxval(AT_HWCAP) & PPC_CPU_SUPPORTED))
|
|
FAIL_UNSUPPORTED("This test is unsupported on POWER < 5\n");
|
|
}
|
|
|
|
uint32_t vscr[4] __attribute__ ((aligned (16)));
|
|
uint32_t* vscr_ptr = vscr;
|
|
uint32_t vscr_word;
|
|
ucontext_t ucp;
|
|
__vector unsigned int v0 = {0};
|
|
__vector unsigned int v1 = {0};
|
|
|
|
/* Set SAT bit in VSCR register. */
|
|
asm volatile (".machine push;\n"
|
|
".machine \"power5\";\n"
|
|
".machine altivec;\n"
|
|
"vspltisb %0,0;\n"
|
|
"vspltisb %1,-1;\n"
|
|
"vpkuwus %0,%0,%1;\n"
|
|
"mfvscr %0;\n"
|
|
"stvx %0,0,%2;\n"
|
|
".machine pop;"
|
|
: "=v" (v0), "=v" (v1)
|
|
: "r" (vscr_ptr)
|
|
: "memory");
|
|
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
|
|
vscr_word = vscr[0];
|
|
#else
|
|
vscr_word = vscr[3];
|
|
#endif
|
|
|
|
if ((vscr_word & SAT) != SAT)
|
|
{
|
|
FAIL_EXIT1("FAIL: SAT bit is not set.\n");
|
|
}
|
|
|
|
if (getcontext (&ucp))
|
|
{
|
|
FAIL_EXIT1("FAIL: getcontext error\n");
|
|
}
|
|
if (ucp.uc_mcontext.v_regs->vscr.vscr_word != vscr_word)
|
|
{
|
|
FAIL_EXIT1("FAIL: ucontext vscr does not match with vscr\n");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|