Mercurial > hg > Members > kaito > longjump

annotate pointer_longjump.c @ 5:4e7858590985

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remove malloc , free and include<stdlib.h>
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sat, 23 Nov 2013 23:31:02 +0900
parents d75a89b10176
children 509523ee1e27
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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1 #include <stdio.h>
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2 #include <setjmp.h>
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d75a89b10176 write pointer_longjump.c
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4 __code code1(int n,__code(*__return)(int,void *,int *),void *__environment,int *__ret_p){
d75a89b10176 write pointer_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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5 printf("code1 : code entry1\n");
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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6 goto __return(n,__environment,__ret_p);
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7 }
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9 __code return1 (int n,void* env,int* __ret_p){
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10 printf("return1 : __return entry\n");
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11 *__ret_p = n;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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12 longjmp(*(jmp_buf*)env,1);
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13 }
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15 int main1 (){
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16 __code (*__return)();
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4e7858590985 remove malloc , free and include<stdlib.h>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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17 void *__environment ;
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18 int retval;
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e6aa3b678e4a remove ret from global_longjump.c
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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19 int *__ret_p;
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4e7858590985 remove malloc , free and include<stdlib.h>
Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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20 jmp_buf j_buf;
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21 __ret_p = &retval;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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22 printf("main1 : main1 entry\n");
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23 __environment = &j_buf;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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24 if (setjmp(__environment)){
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25 printf("main1 : main1 return\n");
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26 return retval;
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27 }
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28 __return = return1;
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Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
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29 goto code1(30,__return,__environment,__ret_p);
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30 return 0;
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31 }
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32
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33 int main (){
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34 int n;
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35 n = main1();
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36 printf("returned\n");
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37 printf("return = %d\n",n);
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38 return 1;
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39 }