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/* syscall error handlers. C-SKY ABIV2 version.
Copyright (C) 2018-2019 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/>. */
#include <sysdep.h>
/* The syscall stubs jump here when they detect an error.
The code for Linux is almost identical to the canonical Unix
code, except that the error number in R0 is negated. */
#undef CALL_MCOUNT
#define CALL_MCOUNT /* Don't insert the profiling call, it clobbers R0. */
.text
ENTRY (__syscall_error)
movi a1, 0
rsub a0, a0, a1
#if !IS_IN (rtld)
mov a1, a0
mov a0, tls
grs t1, .Lgetpc1
.Lgetpc1:
lrw t0, errno@gottpoff
add t1, t1, t0
ldw t1, (t1)
add t1, a0
stw a1, (t1)
bmaski a0, 0
rts
#elif RTLD_PRIVATE_ERRNO /* !IS_IN (rtld) */
# ifdef __PIC__
grs t1, .Lgetpc2
.Lgetpc2:
lrw t0, .Lgetpc2@GOTPC
addu t1, t1, t0
lrw t0, rtld_errno@PLT
ldr.w t0, (t1, t0 << 0)
# else
lrw t0, rtld_errno
# endif /* __PIC__ */
stw a0, (t0)
bmaski a0, 0
rts
#else
# error "Unsupported non-TLS case"
#endif /* RTLD_PRIVATE_ERRNO */
#undef __syscall_error
END (__syscall_error)
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