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129 lines
2.6 KiB
ArmAsm
129 lines
2.6 KiB
ArmAsm
/* Cancellable syscall wrapper. Linux/mips32 version.
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Copyright (C) 2023-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <sys/asm.h>
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#include <descr-const.h>
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/* long int __syscall_cancel_arch (int *cancelhandling,
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__syscall_arg_t nr,
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__syscall_arg_t arg1,
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__syscall_arg_t arg2,
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__syscall_arg_t arg3,
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__syscall_arg_t arg4,
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__syscall_arg_t arg5,
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__syscall_arg_t arg6,
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__syscall_arg_t arg7) */
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#define FRAME_SIZE 56
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NESTED (__syscall_cancel_arch, FRAME_SIZE, fp)
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.mask 0xc0070000,-SZREG
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.fmask 0x00000000,0
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PTR_ADDIU sp, -FRAME_SIZE
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cfi_def_cfa_offset (FRAME_SIZE)
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sw fp, 48(sp)
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sw ra, 52(sp)
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sw s2, 44(sp)
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sw s1, 40(sp)
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sw s0, 36(sp)
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#ifdef __PIC__
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.cprestore 16
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#endif
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cfi_offset (ra, -4)
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cfi_offset (fp, -8)
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cfi_offset (s2, -12)
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cfi_offset (s1, -16)
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cfi_offset (s0, -20)
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move fp ,sp
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cfi_def_cfa_register (fp)
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.globl __syscall_cancel_arch_start
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__syscall_cancel_arch_start:
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lw v0, 0(a0)
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andi v0, v0, TCB_CANCELED_BITMASK
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bne v0, zero, 2f
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addiu sp, sp, -16
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addiu v0, sp, 16
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sw v0, 24(fp)
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move s0, a1
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move a0, a2
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move a1, a3
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lw a2, 72(fp)
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lw a3, 76(fp)
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lw v0, 84(fp)
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lw s1, 80(fp)
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lw s2, 88(fp)
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.set noreorder
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subu sp, 32
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sw s1, 16(sp)
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sw v0, 20(sp)
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sw s2, 24(sp)
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move v0, s0
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syscall
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.globl __syscall_cancel_arch_end
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__syscall_cancel_arch_end:
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addiu sp, sp, 32
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.set reorder
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beq a3, zero, 1f
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subu v0, zero, v0
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1:
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move sp, fp
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cfi_remember_state
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cfi_def_cfa_register (sp)
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lw ra, 52(fp)
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lw fp, 48(sp)
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lw s2, 44(sp)
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lw s1, 40(sp)
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lw s0, 36(sp)
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.set noreorder
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.set nomacro
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jr ra
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addiu sp,sp,FRAME_SIZE
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.set macro
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.set reorder
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cfi_def_cfa_offset (0)
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cfi_restore (s0)
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cfi_restore (s1)
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cfi_restore (s2)
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cfi_restore (fp)
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cfi_restore (ra)
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2:
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cfi_restore_state
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#ifdef __PIC__
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PTR_LA t9, __syscall_do_cancel
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jalr t9
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#else
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jal __syscall_do_cancel
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#endif
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END (__syscall_cancel_arch)
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