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111
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1 /* Area: ffi_call, closure_call
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2 Purpose: Check structure passing with different structure size.
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3 Contains structs as parameter of the struct itself.
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4 Sample taken from Alan Modras patch to src/prep_cif.c.
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5 Limitations: none.
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6 PR: none.
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7 Originator: <andreast@gcc.gnu.org> 20051010 */
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8
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9 /* { dg-do run } */
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10 #include "ffitest.h"
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11
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12 typedef struct A {
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13 unsigned long long a;
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14 unsigned char b;
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15 } A;
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16
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17 typedef struct B {
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18 struct A x;
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19 unsigned char y;
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20 } B;
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21
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22 static B B_fn(struct A b2, struct B b3)
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23 {
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24 struct B result;
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25
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26 result.x.a = b2.a + b3.x.a;
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27 result.x.b = b2.b + b3.x.b + b3.y;
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28 result.y = b2.b + b3.x.b;
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29
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30 printf("%d %d %d %d %d: %d %d %d\n", (int)b2.a, b2.b,
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31 (int)b3.x.a, b3.x.b, b3.y,
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32 (int)result.x.a, result.x.b, result.y);
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33
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34 return result;
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35 }
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36
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37 static void
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38 B_gn(ffi_cif* cif __UNUSED__, void* resp, void** args,
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39 void* userdata __UNUSED__)
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40 {
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41 struct A b0;
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42 struct B b1;
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43
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44 b0 = *(struct A*)(args[0]);
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45 b1 = *(struct B*)(args[1]);
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46
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47 *(B*)resp = B_fn(b0, b1);
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48 }
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49
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50 int main (void)
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51 {
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52 ffi_cif cif;
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53 void *code;
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54 ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
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55 void* args_dbl[3];
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56 ffi_type* cls_struct_fields[3];
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57 ffi_type* cls_struct_fields1[3];
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58 ffi_type cls_struct_type, cls_struct_type1;
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59 ffi_type* dbl_arg_types[3];
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60
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61 struct A e_dbl = { 1LL, 7};
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62 struct B f_dbl = {{12.0 , 127}, 99};
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63
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64 struct B res_dbl;
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65
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66 cls_struct_type.size = 0;
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67 cls_struct_type.alignment = 0;
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68 cls_struct_type.type = FFI_TYPE_STRUCT;
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69 cls_struct_type.elements = cls_struct_fields;
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70
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71 cls_struct_type1.size = 0;
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72 cls_struct_type1.alignment = 0;
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73 cls_struct_type1.type = FFI_TYPE_STRUCT;
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74 cls_struct_type1.elements = cls_struct_fields1;
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75
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76 cls_struct_fields[0] = &ffi_type_uint64;
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77 cls_struct_fields[1] = &ffi_type_uchar;
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78 cls_struct_fields[2] = NULL;
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79
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80 cls_struct_fields1[0] = &cls_struct_type;
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81 cls_struct_fields1[1] = &ffi_type_uchar;
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82 cls_struct_fields1[2] = NULL;
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83
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84
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85 dbl_arg_types[0] = &cls_struct_type;
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86 dbl_arg_types[1] = &cls_struct_type1;
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87 dbl_arg_types[2] = NULL;
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88
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89 CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &cls_struct_type1,
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90 dbl_arg_types) == FFI_OK);
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91
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92 args_dbl[0] = &e_dbl;
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93 args_dbl[1] = &f_dbl;
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94 args_dbl[2] = NULL;
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95
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96 ffi_call(&cif, FFI_FN(B_fn), &res_dbl, args_dbl);
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97 /* { dg-output "1 7 12 127 99: 13 233 134" } */
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98 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
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99 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
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100 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
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101
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102 CHECK(ffi_prep_closure_loc(pcl, &cif, B_gn, NULL, code) == FFI_OK);
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103
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104 res_dbl = ((B(*)(A, B))(code))(e_dbl, f_dbl);
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105 /* { dg-output "\n1 7 12 127 99: 13 233 134" } */
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106 CHECK( res_dbl.x.a == (e_dbl.a + f_dbl.x.a));
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107 CHECK( res_dbl.x.b == (e_dbl.b + f_dbl.x.b + f_dbl.y));
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108 CHECK( res_dbl.y == (e_dbl.b + f_dbl.x.b));
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109
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110 exit(0);
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111 }
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