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#include <asm/unistd.h>
.text
.weak clone
clone:
.global __clone
__clone:
movl 4(%esp), %ecx /* have non null thread_funcion */
testl %ecx, %ecx
je .Lclone_error
movl 8(%esp), %ecx /* have non null child_stack pointer */
testl %ecx, %ecx
je .Lclone_error
/* put the parameter on thread stack */
subl $8, %ecx
movl 16(%esp), %eax /* arg */
movl %eax, 4(%ecx)
movl 4(%esp), %eax /* thread_func */
movl %eax, 0(%ecx)
/* the syscall */
pushl %ebx
movl 16(%esp), %ebx /* flags */
movl $__NR_clone, %eax
int $0x80
popl %ebx
testl %eax, %eax
jl .Lclone_error
je .Lstart_thread
ret
.Lstart_thread:
xorl %ebp,%ebp
call *%ebx
pushl %eax
call _exit
.Lclone_error:
negl %eax
pushl %eax
call __errno_location
popl %ecx
movl %ecx, (%eax)
xorl %eax, %eax
decl %eax
ret
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