c3-lang/libffi/testsuite/libffi.call/cls_pointer_stack.c

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• Hash : f3a4f3fd
  Author :
  Date : 2013-02-07T09:57:20
  

  Fixes for AIX xlc compiler.

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• testsuite/libffi.call/cls_pointer_stack.c

• /* Area:		ffi_call, closure_call
     Purpose:		Check pointer arguments across multiple hideous stack frames.
     Limitations:	none.
     PR:			none.
     Originator:	Blake Chaffin 6/7/2007	*/
  
  /* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
  #include "ffitest.h"
  
  static	long dummyVar;
  
  long dummy_func(
  	long double a1, char b1,
  	long double a2, char b2,
  	long double a3, char b3,
  	long double a4, char b4)
  {
  	return a1 + b1 + a2 + b2 + a3 + b3 + a4 + b4;
  }
  
  void* cls_pointer_fn2(void* a1, void* a2)
  {
  	long double	trample1	= (intptr_t)a1 + (intptr_t)a2;
  	char		trample2	= ((char*)&a1)[0] + ((char*)&a2)[0];
  	long double	trample3	= (intptr_t)trample1 + (intptr_t)a1;
  	char		trample4	= trample2 + ((char*)&a1)[1];
  	long double	trample5	= (intptr_t)trample3 + (intptr_t)a2;
  	char		trample6	= trample4 + ((char*)&a2)[1];
  	long double	trample7	= (intptr_t)trample5 + (intptr_t)trample1;
  	char		trample8	= trample6 + trample2;
  	void*		result;
  
  	dummyVar	= dummy_func(trample1, trample2, trample3, trample4,
  		trample5, trample6, trample7, trample8);
  
  	result	= (void*)((intptr_t)a1 + (intptr_t)a2);
  
  	printf("0x%08x 0x%08x: 0x%08x\n", 
  	       (unsigned int)(uintptr_t) a1,
                 (unsigned int)(uintptr_t) a2,
                 (unsigned int)(uintptr_t) result);
  
  	return result;
  }
  
  void* cls_pointer_fn1(void* a1, void* a2)
  {
  	long double	trample1	= (intptr_t)a1 + (intptr_t)a2;
  	char		trample2	= ((char*)&a1)[0] + ((char*)&a2)[0];
  	long double	trample3	= (intptr_t)trample1 + (intptr_t)a1;
  	char		trample4	= trample2 + ((char*)&a1)[1];
  	long double	trample5	= (intptr_t)trample3 + (intptr_t)a2;
  	char		trample6	= trample4 + ((char*)&a2)[1];
  	long double	trample7	= (intptr_t)trample5 + (intptr_t)trample1;
  	char		trample8	= trample6 + trample2;
  	void*		result;
  
  	dummyVar	= dummy_func(trample1, trample2, trample3, trample4,
  		trample5, trample6, trample7, trample8);
  
  	result	= (void*)((intptr_t)a1 + (intptr_t)a2);
  
  	printf("0x%08x 0x%08x: 0x%08x\n",
                 (unsigned int)(intptr_t) a1,
                 (unsigned int)(intptr_t) a2,
                 (unsigned int)(intptr_t) result);
  
  	result	= cls_pointer_fn2(result, a1);
  
  	return result;
  }
  
  static void
  cls_pointer_gn(ffi_cif* cif __UNUSED__, void* resp, 
  	       void** args, void* userdata __UNUSED__)
  {
  	void*	a1	= *(void**)(args[0]);
  	void*	a2	= *(void**)(args[1]);
  
  	long double	trample1	= (intptr_t)a1 + (intptr_t)a2;
  	char		trample2	= ((char*)&a1)[0] + ((char*)&a2)[0];
  	long double	trample3	= (intptr_t)trample1 + (intptr_t)a1;
  	char		trample4	= trample2 + ((char*)&a1)[1];
  	long double	trample5	= (intptr_t)trample3 + (intptr_t)a2;
  	char		trample6	= trample4 + ((char*)&a2)[1];
  	long double	trample7	= (intptr_t)trample5 + (intptr_t)trample1;
  	char		trample8	= trample6 + trample2;
  
  	dummyVar	= dummy_func(trample1, trample2, trample3, trample4,
  		trample5, trample6, trample7, trample8);
  
  	*(void**)resp = cls_pointer_fn1(a1, a2);
  }
  
  int main (void)
  {
  	ffi_cif	cif;
          void *code;
  	ffi_closure*	pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
  	void*			args[3];
  	/*	ffi_type		cls_pointer_type; */
  	ffi_type*		arg_types[3];
  
  /*	cls_pointer_type.size = sizeof(void*);
  	cls_pointer_type.alignment = 0;
  	cls_pointer_type.type = FFI_TYPE_POINTER;
  	cls_pointer_type.elements = NULL;*/
  
  	void*	arg1	= (void*)0x01234567;
  	void*	arg2	= (void*)0x89abcdef;
  	ffi_arg	res		= 0;
  
  	arg_types[0] = &ffi_type_pointer;
  	arg_types[1] = &ffi_type_pointer;
  	arg_types[2] = NULL;
  
  	CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_pointer,
  		arg_types) == FFI_OK);
  
  	args[0] = &arg1;
  	args[1] = &arg2;
  	args[2] = NULL;
  
  	printf("\n");
  	ffi_call(&cif, FFI_FN(cls_pointer_fn1), &res, args);
  
  	printf("res: 0x%08x\n", (unsigned int) res);
  	/* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
  	/* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
  	/* { dg-output "\nres: 0x8bf258bd" } */
  
  	CHECK(ffi_prep_closure_loc(pcl, &cif, cls_pointer_gn, NULL, code) == FFI_OK);
  
  	res = (ffi_arg)(uintptr_t)((void*(*)(void*, void*))(code))(arg1, arg2);
  
  	printf("res: 0x%08x\n", (unsigned int) res);
  	/* { dg-output "\n0x01234567 0x89abcdef: 0x8acf1356" } */
  	/* { dg-output "\n0x8acf1356 0x01234567: 0x8bf258bd" } */
  	/* { dg-output "\nres: 0x8bf258bd" } */
  
  	exit(0);
  }
  

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