diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/csky/syscall_cancel.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/csky/syscall_cancel.S | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/csky/syscall_cancel.S b/sysdeps/unix/sysv/linux/csky/syscall_cancel.S new file mode 100644 index 0000000000..2989765f8c --- /dev/null +++ b/sysdeps/unix/sysv/linux/csky/syscall_cancel.S @@ -0,0 +1,114 @@ +/* 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) |