686b1cdfdc
On Linux, GCC emits .note.GNU-stack sections when compiling code to mark the code as not needing or needing executable stack, missing section means unknown. But assembly files need to be marked manually. We already mark various *.S files in libgcc manually, but the avx_resms64f.o avx_resms64fx.o avx_resms64.o avx_resms64x.o avx_savms64f.o avx_savms64.o sse_resms64f.o sse_resms64fx.o sse_resms64.o sse_resms64x.o sse_savms64f.o sse_savms64.o files aren't marked, so when something links it in, it will require executable stack. Nothing in the assembly requires executable stack though. 2021-01-27 Jakub Jelinek <jakub@redhat.com> * config/i386/savms64.h: Add .note.GNU-stack section on Linux. * config/i386/savms64f.h: Likewise. * config/i386/resms64.h: Likewise. * config/i386/resms64f.h: Likewise. * config/i386/resms64x.h: Likewise. * config/i386/resms64fx.h: Likewise.
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/* Epilogue stub for 64-bit ms/sysv clobbers: restore and return
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Copyright (C) 2016-2021 Free Software Foundation, Inc.
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Contributed by Daniel Santos <daniel.santos@pobox.com>
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This file is part of GCC.
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GCC 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, or (at your option)
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any later version.
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GCC 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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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <cet.h>
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#ifdef __x86_64__
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#include "i386-asm.h"
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/* Epilogue routine for restoring 64-bit ms/sysv registers and returning from
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* function. */
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.text
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cfi_startproc()
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cfi_def_cfa(%r10, 8)
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MS2SYSV_STUB_BEGIN(resms64x_18)
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mov -0x70(%rsi),%r15
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MS2SYSV_STUB_BEGIN(resms64x_17)
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mov -0x68(%rsi),%r14
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MS2SYSV_STUB_BEGIN(resms64x_16)
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mov -0x60(%rsi),%r13
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MS2SYSV_STUB_BEGIN(resms64x_15)
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mov -0x58(%rsi),%r12
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MS2SYSV_STUB_BEGIN(resms64x_14)
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mov -0x50(%rsi),%rbp
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MS2SYSV_STUB_BEGIN(resms64x_13)
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mov -0x48(%rsi),%rbx
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MS2SYSV_STUB_BEGIN(resms64x_12)
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mov -0x40(%rsi),%rdi
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SSE_RESTORE
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mov -0x38(%rsi),%rsi
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mov %r10,%rsp
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cfi_def_cfa_register(%rsp)
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ret
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cfi_endproc()
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MS2SYSV_STUB_END(resms64x_12)
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MS2SYSV_STUB_END(resms64x_13)
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MS2SYSV_STUB_END(resms64x_14)
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MS2SYSV_STUB_END(resms64x_15)
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MS2SYSV_STUB_END(resms64x_16)
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MS2SYSV_STUB_END(resms64x_17)
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MS2SYSV_STUB_END(resms64x_18)
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#endif /* __x86_64__ */
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#if defined(__ELF__) && defined(__linux__)
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.section .note.GNU-stack,"",@progbits
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.previous
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#endif
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