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81 lines
2.0 KiB
ArmAsm
81 lines
2.0 KiB
ArmAsm
/* Cancellable syscall wrapper. Linux/alpha 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 <descr-const.h>
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/* long int __syscall_cancel_arch (int *ch,
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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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.set noreorder
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.set noat
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.set nomacro
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ENTRY (__syscall_cancel_arch)
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.frame sp, 16, ra, 0
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.mask 0x4000000,-16
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cfi_startproc
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ldah gp, 0(t12)
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lda gp, 0(gp)
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lda sp, -16(sp)
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cfi_def_cfa_offset (16)
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mov a1, v0
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stq ra, 0(sp)
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cfi_offset (26, -16)
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.prologue 1
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.global __syscall_cancel_arch_start
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__syscall_cancel_arch_start:
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ldl t0, 0(a0)
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addl zero, t0, t0
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/* if (*ch & CANCELED_BITMASK) */
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and t0, TCB_CANCELED_BITMASK, t0
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bne t0, 1f
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mov a2, a0
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mov a3, a1
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mov a4, a2
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ldq a4, 16(sp)
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mov a5, a3
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ldq a5, 24(sp)
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.set macro
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callsys
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.set nomacro
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.global __syscall_cancel_arch_end
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__syscall_cancel_arch_end:
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subq zero, v0, t0
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ldq ra, 0(sp)
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cmovne a3, t0, v0
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lda sp, 16(sp)
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cfi_remember_state
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cfi_restore (26)
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cfi_def_cfa_offset (0)
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ret zero, (ra), 1
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.align 4
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1:
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cfi_restore_state
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ldq t12, __syscall_do_cancel(gp) !literal!2
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jsr ra, (t12), __syscall_do_cancel !lituse_jsr!2
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cfi_endproc
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END (__syscall_cancel_arch)
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