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* hurd/Makefile: add new tests * hurd/test-sig-rpc-interrupted.c: check xstate save and restore in the case where a signal is delivered to a thread which is waiting for an rpc. This test implements the rpc interruption protocol used by the hurd servers. It was so far passing on Debian thanks to the local-intr-msg-clobber.diff patch, which is now obsolete. * hurd/test-sig-xstate.c: check xstate save and restore in the case where a signal is delivered to a running thread, making sure that the xstate is modified in the signal handler. * hurd/test-xstate.h: add helpers to test xstate * sysdeps/mach/hurd/i386/bits/sigcontext.h: add xstate to the sigcontext structure. + sysdeps/mach/hurd/i386/sigreturn.c: restore xstate from the saved context * sysdeps/mach/hurd/x86/trampoline.c: save xstate if supported. Otherwise we fall back to the previous behaviour of ignoring xstate. * sysdeps/mach/hurd/x86_64/bits/sigcontext.h: add xstate to the sigcontext structure. * sysdeps/mach/hurd/x86_64/sigreturn.c: restore xstate from the saved context Signed-off-by: Luca Dariz <luca@orpolo.org> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Message-ID: <20250319171118.142163-1-luca@orpolo.org>
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/* Helpers to test XSTATE during signal handling
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Copyright (C) 2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _TEST_XSTATE_H
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#define _TEST_XSTATE_H
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#if defined __x86_64__ || defined __i386__
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#define XSTATE_HELPERS_SUPPORTED 1
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#define XSTATE_BUFFER_SIZE 16
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#define SET_XSTATE(b) do { \
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asm volatile ("movups (%0),%%xmm0" :: "r" (b)); \
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} while (0)
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#define GET_XSTATE(b) do { \
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asm volatile ("movups %%xmm0,(%0)" :: "r" (b)); \
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} while (0)
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#else
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#define XSTATE_HELPERS_SUPPORTED 0
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#define XSTATE_BUFFER_SIZE 1
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#define SET_XSTATE(b)
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#endif
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#endif /* _TEST_XSTATE_H */
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