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#include <sys/linux-syscalls.h>
.text
/*
* int __pthread_clone(int (*fn)(void*), void *tls, int flags,
* void *arg);
*/
.globl __pthread_clone
.type __pthread_clone, @function
.align 4
__pthread_clone:
pushl %ebx
pushl %ecx
movl 16(%esp), %ecx
movl 20(%esp), %ebx
# insert arguments onto the child stack
movl 12(%esp), %eax
movl %eax, -12(%ecx)
movl 24(%esp), %eax
movl %eax, -8(%ecx)
lea (%ecx), %eax
movl %eax, -4(%ecx)
movl $__NR_clone, %eax
int $0x80
test %eax, %eax
jns 1f
# an error occured, set errno and return -1
negl %eax
call __set_errno
orl $-1, %eax
jmp 2f
1:
jnz 2f
# we're in the child thread now, call __thread_entry
# with the appropriate arguments on the child stack
# we already placed most of them
subl $16, %esp
jmp __thread_entry
hlt
2:
popl %ecx
popl %ebx
ret
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