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Add sysdeps/x86_64/x32/tls.h

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H.J. Lu 2012-05-11 14:33:12 -07:00
parent 842b81d611
commit 60d45b36a5
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nptl/ChangeLog
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2012-05-11 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/x32/tls.h: New file.
2012-05-11 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/x86_64/tls.h (THREAD_SETMEM): Use uint64_t on 64-bit

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nptl/sysdeps/x86_64/x32/tls.h Normal file
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/* Definition for thread-local data handling. nptl/x32 version.
Copyright (C) 2012 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/>. */
#ifndef _X32_TLS_H
#define _X32_TLS_H 1
#include <sysdeps/x86_64/tls.h>
#ifndef __ASSEMBLER__
/* X32 doesn't support 32-bit indirect call via memory. Instead, we
load 32-bit address from memory into the lower 32bits of return
register, which will automatically zero-extend the uppper 32-bits
of return register. We then do the indirect call via 64-bit return
register. */
# undef CALL_THREAD_FCT
# define CALL_THREAD_FCT(descr) \
({ void *__res; \
asm volatile ("movl %%fs:%P2, %%edi\n\t" \
"movl %%fs:%P1, %k0\n\t" \
"callq *%q0" \
: "=a" (__res) \
: "i" (offsetof (struct pthread, start_routine)), \
"i" (offsetof (struct pthread, arg)) \
: "di", "si", "cx", "dx", "r8", "r9", "r10", "r11", \
"memory", "cc"); \
__res; })
#endif /* __ASSEMBLER__ */
#endif /* x32/tls.h */