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/* Assembler macros for ARM/NaCl.
Copyright (C) 2015-2017 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 _ARM_NACL_SYSDEP_H
#define _ARM_NACL_SYSDEP_H 1
#ifdef __ASSEMBLER__
# ifndef NO_THUMB
# define NO_THUMB
# endif
# define ARM_SFI_MACROS 1
/* The compiler driver primes the assembler with a standard set of
macros that includes sfi_breg and sfi_sp. The sfi_pld macro is
redundant with sfi_breg, but libc code uses it so as not to run
afoul of the assembler's parsing bug in versions prior to 2.23.2.
NaCl never uses an assembler that has this bug. */
.macro sfi_pld basereg, offset=#0
sfi_breg \basereg, pld [\basereg, \offset]
.endm
#endif
#include <sysdeps/arm/sysdep.h>
#ifdef __ASSEMBLER__
# undef eabi_fnstart
# define eabi_fnstart
# undef eabi_fnend
# define eabi_fnend
# undef eabi_save
# define eabi_save(...)
# undef eabi_cantunwind
# define eabi_cantunwind
# undef eabi_pad
# define eabi_pad(n)
/* NaCl has its own special way of getting the thread pointer. */
# undef GET_TLS
# define GET_TLS(tmp) ldr r0, [r9]
/* Rather than macroizing the code any more, we can just define a few
mnemonics as macros here. */
# define bl sfi_bl
# define bx sfi_bx
# define blx sfi_blx
# define bxeq sfi_bxeq /* Only condition now in use. */
#endif /* __ASSEMBLER__ */
#endif /* sysdep.h */
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