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126
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1 extern int printf(const char*, ...);
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16
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2
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3 typedef void (*RET_FUNC)(int, void *);
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126
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4 int f();
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16
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5
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6 int main(int argc, char **argv)
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7 {
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8 int r;
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9 r = f();
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10 printf("%d\n", r);
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11 }
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12
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13 //void z(RET_FUNC ret, void *fp)
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14 __code z(RET_FUNC ret, void *fp)
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15 {
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16 printf("z: fp=0x%x\n", __builtin_frame_address(0));
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17 ret(5, fp);
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18 }
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19 __code i(RET_FUNC ret, void *fp)
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20 {
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21 printf("i: fp=0x%x\n", __builtin_frame_address(0));
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22 goto z(ret, fp);
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23 }
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24 __code h(RET_FUNC ret, void *fp)
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25 {
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26 printf("h: fp=0x%x\n", __builtin_frame_address(0));
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27 goto i(ret, fp);
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28 }
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29 __code g(RET_FUNC ret, void *fp)
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30 {
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31 printf("g: fp=0x%x\n", __builtin_frame_address(0));
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32 goto h(ret, fp);
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33 }
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34
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35 int f()
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36 {
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37 __label__ exit0;
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38 int retval;
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39 //void (*ret)(int retval_, void *fp);
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40
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41 /*
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42 ret = ({
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43 void __return_func(int retval_, void *fp){
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44 retval = retval_;
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45 goto exit0;
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46 }
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47 __return_func;
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48 });
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49 */
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50 printf("f0: fp = 0x%x\n", __builtin_frame_address(0));
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51 void __return_func(int retval_, void *fp){
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52 retval = retval_;
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53 goto exit0;
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54 }
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55 //ret = __return_func;
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56
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57 printf("f1: fp = 0x%x\n", __builtin_frame_address(0));
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58
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59 //g(__return_func, __builtin_frame_address(0));
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60 goto g(__return_func, __builtin_frame_address(0));
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61
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62 printf("bad\n");
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63
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64 exit0:
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65 printf("f2: fp = 0x%x\n", __builtin_frame_address(0));
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66 return retval;
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67 }
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68
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69
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70
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