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/* Bounded-pointer definitions for x86 assembler.
Copyright (C) 2000-2013 Free Software Foundation, Inc.
Contributed by Greg McGary <greg@mcgary.org>
This file is part of the GNU C Library. Its master source is NOT part of
the C library, however. The master source lives in the GNU MP 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 _bp_asm_h_
# define _bp_asm_h_ 1
# if __ASSEMBLER__
# if __BOUNDED_POINTERS__
/* Bounded pointers occupy three words. */
# define PTR_SIZE 12
/* Bounded pointer return values are passed back through a hidden
argument that points to caller-allocate space. The hidden arg
occupies one word on the stack. */
# define RTN_SIZE 4
/* Although the caller pushes the hidden arg, the callee is
responsible for popping it. */
# define RET_PTR ret $RTN_SIZE
/* Stack space overhead of procedure-call linkage: return address and
frame pointer. */
# define LINKAGE 8
/* Stack offset of return address after calling ENTER. */
# define PCOFF 4
# else /* !__BOUNDED_POINTERS__ */
/* Unbounded pointers occupy one word. */
# define PTR_SIZE 4
/* Unbounded pointer return values are passed back in the register %eax. */
# define RTN_SIZE 0
/* Use simple return instruction for unbounded pointer values. */
# define RET_PTR ret
/* Stack space overhead of procedure-call linkage: return address only. */
# define LINKAGE 4
/* Stack offset of return address after calling ENTER. */
# define PCOFF 0
# endif /* !__BOUNDED_POINTERS__ */
# endif /* __ASSEMBLER__ */
#endif /* _bp_asm_h_ */
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