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/* Cancellable syscall wrapper. Linux/mips64 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 <sys/asm.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,
__syscall_arg_t arg7) */
#define FRAME_SIZE 32
.text
NESTED (__syscall_cancel_arch, FRAME_SIZE, ra)
.mask 0x90010000, -SZREG
.fmask 0x00000000, 0
LONG_ADDIU sp, sp, -FRAME_SIZE
cfi_def_cfa_offset (FRAME_SIZE)
sd gp, 16(sp)
cfi_offset (gp, -16)
lui gp, %hi(%neg(%gp_rel(__syscall_cancel_arch)))
LONG_ADDU gp, gp, t9
sd ra, 24(sp)
sd s0, 8(sp)
cfi_offset (ra, -8)
cfi_offset (s0, -24)
LONG_ADDIU gp, gp, %lo(%neg(%gp_rel(__syscall_cancel_arch)))
.global __syscall_cancel_arch_start
__syscall_cancel_arch_start:
lw v0, 0(a0)
andi v0, v0, TCB_CANCELED_BITMASK
.set noreorder
.set nomacro
bne v0, zero, 2f
move s0, a1
.set macro
.set reorder
move a0, a2
move a1, a3
move a2, a4
move a3, a5
move a4, a6
move a5, a7
.set noreorder
move v0, s0
syscall
.set reorder
.global __syscall_cancel_arch_end
__syscall_cancel_arch_end:
.set noreorder
.set nomacro
#if __mips_isa_rev >= 6
beqzc $7, 1f
#else
bnel a3, zero, 1f
#endif
SUBU v0, zero, v0
.set macro
.set reorder
1:
ld ra, 24(sp)
ld gp, 16(sp)
ld s0, 8(sp)
.set noreorder
.set nomacro
jr ra
LONG_ADDIU sp, sp, FRAME_SIZE
.set macro
.set reorder
cfi_remember_state
cfi_def_cfa_offset (0)
cfi_restore (s0)
cfi_restore (gp)
cfi_restore (ra)
.align 3
2:
cfi_restore_state
LONG_L t9, %got_disp(__syscall_do_cancel)(gp)
.reloc 3f, R_MIPS_JALR, __syscall_do_cancel
3: jalr t9
END (__syscall_cancel_arch)
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