/* Cancellable syscall wrapper.  Linux/riscv version.
   Copyright (C) 2023-2025 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)  */

#ifdef SHARED
	.option pic
#else
	.option nopic
#endif

ENTRY (__syscall_cancel_arch)

	.globl __syscall_cancel_arch_start
__syscall_cancel_arch_start:
	lw	t1, 0(a0)
	/* if (*ch & CANCELED_BITMASK)  */
	andi	t1, t1, TCB_CANCELED_BITMASK
	bne	t1, zero, 1f

	mv	t3, a1
	mv	a0, a2
	mv	a1, a3
	mv	a2, a4
	mv	a3, a5
	mv	a4, a6
	mv	a5, a7
	mv	a7, t3
	scall

	.globl __syscall_cancel_arch_end
__syscall_cancel_arch_end:
	ret

1:
	addi	sp, sp, -16
	cfi_def_cfa_offset (16)
	REG_S	ra, (16-SZREG)(sp)
	cfi_offset (ra, -SZREG)
	call	__syscall_do_cancel

END (__syscall_cancel_arch)