70 lines
2.0 KiB
C
70 lines
2.0 KiB
C
/* Assembler macros for ARM/NaCl.
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Copyright (C) 2015-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _ARM_NACL_SYSDEP_H
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#define _ARM_NACL_SYSDEP_H 1
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#ifdef __ASSEMBLER__
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# ifndef NO_THUMB
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# define NO_THUMB
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# endif
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# define ARM_SFI_MACROS 1
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/* The compiler driver primes the assembler with a standard set of
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macros that includes sfi_breg and sfi_sp. The sfi_pld macro is
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redundant with sfi_breg, but libc code uses it so as not to run
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afoul of the assembler's parsing bug in versions prior to 2.23.2.
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NaCl never uses an assembler that has this bug. */
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.macro sfi_pld basereg, offset=#0
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sfi_breg \basereg, pld [\basereg, \offset]
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.endm
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#endif
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#include <sysdeps/arm/sysdep.h>
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#ifdef __ASSEMBLER__
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# undef eabi_fnstart
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# define eabi_fnstart
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# undef eabi_fnend
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# define eabi_fnend
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# undef eabi_save
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# define eabi_save(...)
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# undef eabi_cantunwind
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# define eabi_cantunwind
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# undef eabi_pad
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# define eabi_pad(n)
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/* NaCl has its own special way of getting the thread pointer. */
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# undef GET_TLS
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# define GET_TLS(tmp) ldr r0, [r9]
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/* Rather than macroizing the code any more, we can just define a few
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mnemonics as macros here. */
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# define bl sfi_bl
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# define bx sfi_bx
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# define blx sfi_blx
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# define bxeq sfi_bxeq /* Only condition now in use. */
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#endif /* __ASSEMBLER__ */
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#endif /* sysdep.h */
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