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hurd, htl: Add some x86_64-specific code

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Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-Id: <20230212111044.610942-12-bugaevc@gmail.com>
This commit is contained in:
Sergey Bugaev 2023-02-12 14:10:42 +03:00 committed by Samuel Thibault
parent 8420b3e832
commit d08ae9c3fb
3 changed files with 78 additions and 0 deletions
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27
sysdeps/mach/hurd/x86_64/static-start.S Normal file
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/* Startup code for statically linked Hurd/x86_64 binaries.
Copyright (C) 1998-2023 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/>. */
.text
.globl _start
_start:
call _hurd_stack_setup
xorq %rdx, %rdx
jmp _start1
#define _start _start1
#include <sysdeps/x86_64/start.S>

22
sysdeps/mach/hurd/x86_64/tlsdesc.sym Normal file
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#include <stddef.h>
#include <sysdep.h>
#include <tls.h>
#include <link.h>
#include <dl-tlsdesc.h>
--
-- We have to override sysdeps/x86_64/tlsdesc.sym to adapt to our libpthread.
-- Abuse tls.h macros to derive offsets relative to the thread register.
DTV_OFFSET offsetof(tcbhead_t, dtv)
TLSDESC_ARG offsetof(struct tlsdesc, arg)
TLSDESC_GEN_COUNT offsetof(struct tlsdesc_dynamic_arg, gen_count)
TLSDESC_MODID offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_module)
TLSDESC_MODOFF offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_offset)
TI_MODULE_OFFSET offsetof(tls_index, ti_module)
TI_OFFSET_OFFSET offsetof(tls_index, ti_offset)

29
sysdeps/x86_64/htl/machine-sp.h Normal file
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/* Machine-specific function to return the stack pointer. x86_64 version.
Copyright (C) 1994-2023 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/>. */
#ifndef _MACHINE_SP_H
#define _MACHINE_SP_H
/* Return the current stack pointer. */
#define __thread_stack_pointer() ({ \
register uintptr_t __sp__ asm("rsp"); \
__sp__; \
})
#endif /* machine-sp.h */