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/* Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Richard Henderson (rth@tamu.edu).
 
   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */
 
/* 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 
#include 
 
/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
 
        .text
        .align  4
        .globl  __clone
        .type   __clone,@function
 
__clone:
        save    %sp,-96,%sp
 
        /* sanity check arguments */
        tst     %i0
        be      .Lerror
         orcc   %i1,%g0,%o1
        be      .Lerror
         mov    %i2,%o0
 
        /* Do the system call */
        set     __NR_clone,%g1
        ta      0x10
        bcs     .Lerror
         tst    %o1
        bne     __thread_start
         nop
        ret
         restore %o0,%g0,%o0
 
.Lerror:
        call    __errno_location
         or     %g0,EINVAL,%i0
        st      %i0,[%o0]
        ret
         restore %g0,-1,%o0
 
        .size   __clone, .-__clone
 
        .type   __thread_start,@function
 
__thread_start:
        call    %i0
         mov    %i3,%o0
        call    _exit,0
         nop
 
        .size   __thread_start, .-__thread_start
 
.weak    clone    ;        clone    =   __clone

Line No.	Rev	Author	Line
1	1325	phoenix	`/* Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.`
2			`This file is part of the GNU C Library.`
3			`Contributed by Richard Henderson (rth@tamu.edu).`
4
5			`The GNU C Library is free software; you can redistribute it and/or`
6			`modify it under the terms of the GNU Lesser General Public`
7			`License as published by the Free Software Foundation; either`
8			`version 2.1 of the License, or (at your option) any later version.`
9
10			`The GNU C Library is distributed in the hope that it will be useful,`
11			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
12			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU`
13			`Lesser General Public License for more details.`
14
15			`You should have received a copy of the GNU Lesser General Public`
16			`License along with the GNU C Library; if not, write to the Free`
17			`Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA`
18			`02111-1307 USA. */`
19
20			`/* clone() is even more special than fork() as it mucks with stacks`
21			`and invokes a function in the right context after its all over. */`
22
23			`#include`
24			`#include`
25
26			`/* int clone(int (fn)(void arg), void child_stack, int flags, void arg); */`
27
28			`.text`
29			`.align 4`
30			`.globl __clone`
31			`.type __clone,@function`
32
33			`__clone:`
34			`save %sp,-96,%sp`
35
36			`/* sanity check arguments */`
37			`tst %i0`
38			`be .Lerror`
39			`orcc %i1,%g0,%o1`
40			`be .Lerror`
41			`mov %i2,%o0`
42
43			`/* Do the system call */`
44			`set __NR_clone,%g1`
45			`ta 0x10`
46			`bcs .Lerror`
47			`tst %o1`
48			`bne __thread_start`
49			`nop`
50			`ret`
51			`restore %o0,%g0,%o0`
52
53			`.Lerror:`
54			`call __errno_location`
55			`or %g0,EINVAL,%i0`
56			`st %i0,[%o0]`
57			`ret`
58			`restore %g0,-1,%o0`
59
60			`.size __clone, .-__clone`
61
62			`.type __thread_start,@function`
63
64			`__thread_start:`
65			`call %i0`
66			`mov %i3,%o0`
67			`call _exit,0`
68			`nop`
69
70			`.size __thread_start, .-__thread_start`
71
72			`.weak clone ; clone = __clone`

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[/] [or1k/] [trunk/] [linux/] [uClibc/] [libc/] [sysdeps/] [linux/] [sparc/] [clone.S] - Blame information for rev 1765