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/* Copyright (C) 2022 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 _LINUX_AARCH64_MORELLO_SYSDEP_H
#define _LINUX_AARCH64_MORELLO_SYSDEP_H 1
#include <sysdeps/unix/sysv/linux/aarch64/sysdep.h>
#ifdef __ASSEMBLER__
# if !IS_IN (libc)
# undef SYSCALL_ERROR_HANDLER
# if RTLD_PRIVATE_ERRNO
# define SYSCALL_ERROR_HANDLER \
.Lsyscall_error: \
neg w0, w0; \
adrp c1, :got:rtld_errno; \
ldr c1, [c1, :got_lo12:rtld_errno]; \
str w0, [c1]; \
mov x0, -1; \
RET;
# else
# define SYSCALL_ERROR_HANDLER \
.Lsyscall_error: \
neg w4, w0; \
adrp c1, :gottprel:errno; \
add c1, c1, :gottprel_lo12:errno; \
ldp x1, x2, [c1]; \
mrs c3, ctpidr_el0; \
add c1, c3, x1, uxtx; \
scbnds c1, c1, x2; \
mov x0, -1; \
str w4, [c1]; \
RET;
# endif
# endif
#else /* not __ASSEMBLER__ */
typedef __intcap_t __sysarg_t;
# undef INTERNAL_SYSCALL_RAW
# define INTERNAL_SYSCALL_RAW(name, nr, args...) \
({ __sysarg_t _sys_result; \
{ \
LOAD_ARGS_##nr (args) \
register long _x8 asm ("x8") = (name); \
asm volatile ("svc 0 // syscall " # name \
: "=r" (_x0) : "r"(_x8) ASM_ARGS_##nr : "memory"); \
_sys_result = _x0; \
} \
_sys_result; })
# undef LOAD_ARGS_0
# undef LOAD_ARGS_1
# undef LOAD_ARGS_2
# undef LOAD_ARGS_3
# undef LOAD_ARGS_4
# undef LOAD_ARGS_5
# undef LOAD_ARGS_6
# undef LOAD_ARGS_7
# define LOAD_ARGS_0() \
register __sysarg_t _x0 asm ("c0");
# define LOAD_ARGS_1(c0) \
__sysarg_t _x0tmp = (__sysarg_t) (c0); \
LOAD_ARGS_0 () \
_x0 = _x0tmp;
# define LOAD_ARGS_2(c0, c1) \
__sysarg_t _x1tmp = (__sysarg_t) (c1); \
LOAD_ARGS_1 (c0) \
register __sysarg_t _x1 asm ("c1") = _x1tmp;
# define LOAD_ARGS_3(c0, c1, c2) \
__sysarg_t _x2tmp = (__sysarg_t) (c2); \
LOAD_ARGS_2 (c0, c1) \
register __sysarg_t _x2 asm ("c2") = _x2tmp;
# define LOAD_ARGS_4(c0, c1, c2, c3) \
__sysarg_t _x3tmp = (__sysarg_t) (c3); \
LOAD_ARGS_3 (c0, c1, c2) \
register __sysarg_t _x3 asm ("c3") = _x3tmp;
# define LOAD_ARGS_5(c0, c1, c2, c3, c4) \
__sysarg_t _x4tmp = (__sysarg_t) (c4); \
LOAD_ARGS_4 (c0, c1, c2, c3) \
register __sysarg_t _x4 asm ("c4") = _x4tmp;
# define LOAD_ARGS_6(c0, c1, c2, c3, c4, c5) \
__sysarg_t _x5tmp = (__sysarg_t) (c5); \
LOAD_ARGS_5 (c0, c1, c2, c3, c4) \
register __sysarg_t _x5 asm ("c5") = _x5tmp;
# define LOAD_ARGS_7(c0, c1, c2, c3, c4, c5, c6)\
__sysarg_t _x6tmp = (__sysarg_t) (x6); \
LOAD_ARGS_6 (c0, c1, c2, c3, c4, c5) \
register __sysarg_t _x6 asm ("c6") = _x6tmp;
# define FCNTL_VA_ARG(a, t) (a ? va_arg(a, t) : 0)
#endif /* __ASSEMBLER__ */
/* Disable pointer mangling for purecap ABI. */
#undef PTR_MANGLE
#undef PTR_MANGLE2
#undef PTR_DEMANGLE
#undef PTR_DEMANGLE2
#endif /* linux/aarch64/morello/sysdep.h */
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