* RESET_PID support for clone.S
* SAVE_PID, RESTORE_PID in vfork.S
* fixup syscall assembly constraints to be a little less restrictive
allows arbitrary variables to be used as the syscall nr
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
-CSRC := brk.c sigaction.c __syscall_error.c
+CSRC := brk.c __syscall_error.c
+
+ifneq ($(UCLIBC_HAS_THREADS_NATIVE),y)
+CSRC += sigaction.c
+endif
SSRC := \
- __longjmp.S vfork.S clone.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
+ __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S \
sync_file_range.S syscall.S mmap.S mmap64.S posix_fadvise64.S
+
+
+ifneq ($(UCLIBC_HAS_THREADS_NATIVE),y)
+SSRC += vfork.S clone.S
+endif
"int $0x80\n\t" \
RESTOREARGS_##nr \
: "=a" (resultvar) \
- : "i" (name) ASMFMT_##nr(args) : "memory", "cc"); \
+ : "g" (name) ASMFMT_##nr(args) : "memory", "cc"); \
(int) resultvar; })
#define LOADARGS_0
#undef __UCLIBC_HAVE_ASM_GLOBAL_DOT_NAME__
/* define if target supports CFI pseudo ops */
-#undef __UCLIBC_HAVE_ASM_CFI_DIRECTIVES__
+#define __UCLIBC_HAVE_ASM_CFI_DIRECTIVES__
/* define if target supports IEEE signed zero floats */
#define __UCLIBC_HAVE_SIGNED_ZERO__
movl %eax,8(%ecx)
/* Don't leak any information. */
movl $0,4(%ecx)
+#ifndef RESET_PID
movl $0,(%ecx)
+#endif
+
/* Do the system call */
pushl %ebx
movl FLAGS+12(%esp),%ebx
movl CTID+12(%esp),%edi
movl $__NR_clone,%eax
+#ifdef RESET_PID
+ /* Remember the flag value. */
+ movl %ebx, (%ecx)
+#endif
int $0x80
popl %edi
popl %esi
jmp __syscall_error
.size clone,.-clone
+weak_alias(clone, __clone)
__vfork:
popl %ecx
+
+#ifdef SAVE_PID
+ SAVE_PID
+#endif
+
movl $__NR_vfork,%eax
int $0x80
pushl %ecx
+
+#ifdef RESTORE_PID
+ RESTORE_PID
+#endif
+
cmpl $-4095,%eax
jae __syscall_error
ret