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comparison src/os/unix/rfork_thread.S @ 0:f0b350454894 NGINX_0_1_0

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nginx 0.1.0 *) The first public version.
author Igor Sysoev <http://sysoev.ru>
date Mon, 04 Oct 2004 00:00:00 +0400
parents
children da8c190bdaba
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-1:000000000000 0:f0b350454894
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7
8 #include <sys/syscall.h>
9 #include <machine/asm.h>
10
11 /*
12 * rfork_thread(3) - rfork_thread(flags, stack, func, arg);
13 */
14
15 #define KERNCALL int $0x80
16
17 ENTRY(rfork_thread)
18 push %ebp
19 mov %esp, %ebp
20 push %esi
21
22 mov 12(%ebp), %esi # the stack address
23
24 sub $4, %esi
25 mov 20(%ebp), %eax # the thread argument
26 mov %eax, (%esi)
27
28 sub $4, %esi
29 mov 16(%ebp), %eax # the start thread address
30 mov %eax, (%esi)
31
32 push 8(%ebp) # rfork(2) flags
33 push $0
34 mov $SYS_rfork, %eax
35 KERNCALL
36 jc error
37
38 cmp $0, %edx
39 jne child
40
41 parent:
42 add $8, %esp
43 pop %esi
44 mov %ebp, %esp
45 pop %ebp
46 ret
47
48 child:
49 mov %esi, %esp
50 pop %eax
51 call *%eax # call a thread start address ...
52 add $4, %esp
53
54 push %eax
55 push $0
56 mov $SYS_exit, %eax # ... and exit(2) after a thread would return
57 KERNCALL
58
59 error:
60 add $8, %esp
61 pop %esi
62 mov %ebp, %esp
63 pop %ebp
64 PIC_PROLOGUE
65
66 /* libc's cerror: jmp PIC_PLT(HIDENAME(cerror)) */
67
68 push %eax
69 call PIC_PLT(CNAME(__error))
70 pop %ecx
71 PIC_EPILOGUE
72 mov %ecx, (%eax)
73 mov $-1, %eax
74 mov $-1, %edx
75 ret