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/* Cancellable syscall wrapper. Linux/nios2 version.
Copyright (C) 2023 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>
#include <descr-const.h>
/* long int __syscall_cancel_arch (int *cancelhandling,
__syscall_arg_t nr,
__syscall_arg_t arg1,
__syscall_arg_t arg2,
__syscall_arg_t arg3,
__syscall_arg_t arg4,
__syscall_arg_t arg5,
__syscall_arg_t arg6) */
ENTRY (__syscall_cancel_arch)
#ifdef SHARED
addi sp, sp, -8
stw r22, 0(sp)
nextpc r22
1:
movhi r8, %hiadj(_gp_got - 1b)
addi r8, r8, %lo(_gp_got - 1b)
stw ra, 4(sp)
add r22, r22, r8
#else
addi sp, sp, -4
cfi_def_cfa_offset (4)
stw ra, 0(sp)
cfi_offset (31, -4)
#endif
.globl __syscall_cancel_arch_start
__syscall_cancel_arch_start:
ldw r3, 0(r4)
andi r3, r3, TCB_CANCELED_BITMASK
bne r3, zero, 3f
mov r10, r6
mov r2, r5
#ifdef SHARED
# define STACK_ADJ 4
#else
# define STACK_ADJ 0
#endif
ldw r9, (16 + STACK_ADJ)(sp)
mov r5, r7
ldw r8, (12 + STACK_ADJ)(sp)
ldw r7, (8 + STACK_ADJ)(sp)
ldw r6, (4 + STACK_ADJ)(sp)
mov r4, r10
trap
.globl __syscall_cancel_arch_end
__syscall_cancel_arch_end:
beq r7, zero, 2f
sub r2, zero, r2
2:
#ifdef SHARED
ldw ra, 4(sp)
ldw r22, 0(sp)
addi sp, sp, 8
#else
ldw ra, (0 + STACK_ADJ)(sp)
cfi_remember_state
cfi_restore (31)
addi sp, sp, 4
cfi_def_cfa_offset (0)
#endif
ret
3:
#ifdef SHARED
ldw r2, %call(__syscall_do_cancel)(r22)
callr r2
#else
cfi_restore_state
call __syscall_do_cancel
#endif
END (__syscall_cancel_arch)
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