diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/arm/clone.S')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/arm/clone.S | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/arm/clone.S b/ports/sysdeps/unix/sysv/linux/arm/clone.S deleted file mode 100644 index 03fe9ab728..0000000000 --- a/ports/sysdeps/unix/sysv/linux/arm/clone.S +++ /dev/null @@ -1,99 +0,0 @@ -/* Copyright (C) 1996-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Pat Beirne <patb@corelcomputer.com> - - 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/>. */ - -/* clone() is even more special than fork() as it mucks with stacks - and invokes a function in the right context after its all over. */ - -#include <sysdep.h> -#define _ERRNO_H 1 -#include <bits/errno.h> - -#define CLONE_VM 0x00000100 -#define CLONE_THREAD 0x00010000 - -/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg, - pid_t *ptid, struct user_desc *tls, pid_t *ctid); */ - - .text -ENTRY(__clone) - @ sanity check args - cmp r0, #0 - ite ne - cmpne r1, #0 - moveq r0, #-EINVAL - beq PLTJMP(syscall_error) - - @ insert the args onto the new stack - str r3, [r1, #-4]! - str r0, [r1, #-4]! - - @ do the system call - @ get flags - mov r0, r2 -#ifdef RESET_PID - mov ip, r2 -#endif - @ new sp is already in r1 - push {r4, r7} - cfi_adjust_cfa_offset (8) - cfi_rel_offset (r4, 0) - cfi_rel_offset (r7, 4) - ldr r2, [sp, #8] - ldr r3, [sp, #12] - ldr r4, [sp, #16] - ldr r7, =SYS_ify(clone) - swi 0x0 - cfi_endproc - cmp r0, #0 - beq 1f - pop {r4, r7} - blt PLTJMP(C_SYMBOL_NAME(__syscall_error)) - RETINSTR(, lr) - - cfi_startproc -PSEUDO_END (__clone) - -1: - .fnstart - .cantunwind -#ifdef RESET_PID - tst ip, #CLONE_THREAD - bne 3f - GET_TLS (lr) - mov r1, r0 - tst ip, #CLONE_VM - ldr r7, =SYS_ify(getpid) - ite ne - movne r0, #-1 - swieq 0x0 - NEGOFF_ADJ_BASE (r1, TID_OFFSET) - str r0, NEGOFF_OFF1 (r1, TID_OFFSET) - str r0, NEGOFF_OFF2 (r1, PID_OFFSET, TID_OFFSET) -3: -#endif - @ pick the function arg and call address off the stack and execute - ldr r0, [sp, #4] - ldr ip, [sp], #8 - BLX (ip) - - @ and we are done, passing the return value through r0 - b PLTJMP(HIDDEN_JUMPTARGET(_exit)) - - .fnend - -weak_alias (__clone, clone) |