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  1. #include "dasm_proto.h"
  2. #include "ex5_labels_x64.h"
  3.  
  4. #include <stdio.h>
  5. #include <stdlib.h>
  6. #include <stdint.h>
  7. #include <windows.h>
  8.  
  9. void* link(Dst_DECL) {
  10. 	size_t size = 0;
  11. 	int linkStatus = dasm_link(Dst, &size);
  12. 	if (linkStatus != DASM_S_OK) {
  13. 		fprintf(stderr, "link error\n");
  14. 		exit(1);
  15. 	}
  16.  
  17. 	void* mem = VirtualAlloc(0, size + sizeof(size_t), MEM_COMMIT, PAGE_EXECUTE_READWRITE);
  18. 	if (mem == 0) {
  19. 		fprintf(stderr, "allocation error\n");
  20. 		exit(2);
  21. 	}
  22.  
  23. 	*(size_t*)mem = size;
  24. 	void *ret = (char*)mem + sizeof(size_t);
  25.  
  26. 	dasm_encode(Dst, ret);
  27.  
  28. 	//FlushInstructionCache(GetCurrentProcess(), ret, size);
  29.  
  30. 	DWORD oldProt = 0;
  31. 	BOOL st = VirtualProtect(mem, size, PAGE_EXECUTE_READ, &oldProt);
  32. 	if (st != TRUE) {
  33. 		VirtualFree(mem, 0, MEM_RELEASE);
  34. 		fprintf(stderr, "error while changing memory protection");
  35. 		exit(3);
  36. 	}
  37.  
  38. 	return ret;
  39. }
  40.  
  41. void* globalTbl[GLOB__MAX == 0 ? 1 : GLOB__MAX];
  42.  
  43. void* generate(Dst_DECL, int nopCount) {
  44. 	dasm_init(Dst, 1);
  45.  
  46. 	dasm_setupglobal(Dst, globalTbl, GLOB__MAX);
  47. 	dasm_setup(Dst, actions);
  48.  
  49. 	dasm_growpc(Dst, 1);
  50.  
  51. 	dynasmGenerator(Dst, nopCount);
  52.  
  53. 	return link(Dst);
  54. }
  55.  
  56. int main(int argc, char **argv)
  57. {
  58. 	dasm_State *dasmState;
  59.  
  60. 	uint64_t (*fptr)() = ((uint64_t(*)()) generate(&dasmState, 4 * 1024 * 1024 + 1));
  61. 	uint64_t result = fptr();
  62.  
  63. 	printf ("%llx\n", result);
  64. 	return 0;
  65. }
  66.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.c:1:24: fatal error: dasm_proto.h: No such file or directory
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/pWUn7g
language:
C (gcc 8.3)
created:
7 years ago
visibility:
secret

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