Mercurial > hg > nginx
annotate src/os/unix/rfork_thread.S @ 2483:29494780d978
free addrs only it has been allocated before: non single address
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 29 Jan 2009 14:32:58 +0000 |
parents | 621229427cba |
children | d620f497c50f |
rev | line source |
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441
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nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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5 |
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6 |
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7 #include <sys/syscall.h> |
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8 #include <machine/asm.h> |
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9 |
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10 /* |
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11 * rfork_thread(3) - rfork_thread(flags, stack, func, arg); |
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12 */ |
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13 |
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14 #define KERNCALL int $0x80 |
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15 |
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16 ENTRY(rfork_thread) |
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17 push %ebp |
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18 mov %esp, %ebp |
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19 push %esi |
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20 |
483 | 21 mov 12(%ebp), %esi # the thread stack address |
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22 |
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23 sub $4, %esi |
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24 mov 20(%ebp), %eax # the thread argument |
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25 mov %eax, (%esi) |
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26 |
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27 sub $4, %esi |
483 | 28 mov 16(%ebp), %eax # the thread start address |
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29 mov %eax, (%esi) |
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30 |
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31 push 8(%ebp) # rfork(2) flags |
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32 push $0 |
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33 mov $SYS_rfork, %eax |
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34 KERNCALL |
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35 jc error |
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36 |
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37 cmp $0, %edx |
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38 jne child |
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39 |
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40 parent: |
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41 add $8, %esp |
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42 pop %esi |
483 | 43 leave |
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44 ret |
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45 |
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46 child: |
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47 mov %esi, %esp |
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48 pop %eax |
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49 call *%eax # call a thread start address ... |
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50 add $4, %esp |
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51 |
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52 push %eax |
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53 push $0 |
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54 mov $SYS_exit, %eax # ... and exit(2) after a thread would return |
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55 KERNCALL |
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56 |
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57 error: |
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58 add $8, %esp |
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59 pop %esi |
483 | 60 leave |
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61 PIC_PROLOGUE |
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62 |
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63 /* libc's cerror: jmp PIC_PLT(HIDENAME(cerror)) */ |
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64 |
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65 push %eax |
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66 call PIC_PLT(CNAME(__error)) |
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67 pop %ecx |
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68 PIC_EPILOGUE |
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69 mov %ecx, (%eax) |
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70 mov $-1, %eax |
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71 mov $-1, %edx |
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72 ret |