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/* Cancellable syscall wrapper. Linux/csky 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) */
#ifdef SHARED
# define STACK_ADJ 4
#else
# define STACK_ADJ 0
#endif
ENTRY (__syscall_cancel_arch)
subi sp, sp, 16 + STACK_ADJ
cfi_def_cfa_offset (16 + STACK_ADJ)
#ifdef SHARED
st.w gb, (sp, 16)
lrw t1, 1f@GOTPC
cfi_offset (gb, -4)
grs gb, 1f
1:
#endif
st.w lr, (sp, 12)
st.w l3, (sp, 8)
st.w l1, (sp, 4)
st.w l0, (sp, 0)
#ifdef SHARED
addu gb, gb, t1
#endif
subi sp, sp, 16
cfi_def_cfa_offset (32 + STACK_ADJ)
cfi_offset (lr, -( 4 + STACK_ADJ))
cfi_offset (l3, -( 8 + STACK_ADJ))
cfi_offset (l1, -(12 + STACK_ADJ))
cfi_offset (l0, -(16 + STACK_ADJ))
mov l3, a1
mov a1, a3
ld.w a3, (sp, 32 + STACK_ADJ)
st.w a3, (sp, 0)
ld.w a3, (sp, 36 + STACK_ADJ)
st.w a3, (sp, 4)
ld.w a3, (sp, 40 + STACK_ADJ)
st.w a3, (sp, 8)
ld.w a3, (sp, 44 + STACK_ADJ)
st.w a3, (sp, 12)
.globl __syscall_cancel_arch_start
__syscall_cancel_arch_start:
ld.w t0, (a0, 0)
andi t0, t0, TCB_CANCELED_BITMASK
jbnez t0, 2f
mov a0, a2
ld.w a3, (sp, 4)
ld.w a2, (sp, 0)
ld.w l0, (sp, 8)
ld.w l1, (sp, 12)
trap 0
.globl __syscall_cancel_arch_end
__syscall_cancel_arch_end:
addi sp, sp, 16
cfi_remember_state
cfi_def_cfa_offset (16 + STACK_ADJ)
#ifdef SHARED
ld.w gb, (sp, 16)
cfi_restore (gb)
#endif
ld.w lr, (sp, 12)
cfi_restore (lr)
ld.w l3, (sp, 8)
cfi_restore (l3)
ld.w l1, (sp, 4)
cfi_restore (l1)
ld.w l0, (sp, 0)
cfi_restore (l0)
addi sp, sp, 16
cfi_def_cfa_offset (0)
rts
2:
cfi_restore_state
#ifdef SHARED
lrw a3, __syscall_do_cancel@GOTOFF
addu a3, a3, gb
jsr a3
#else
jbsr __syscall_do_cancel
#endif
END (__syscall_cancel_arch)
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