1 /* Area: fp and variadics 2 Purpose: check fp inputs and returns work on variadics, even the fixed params 3 Limitations: None 4 PR: none 5 Originator: <david.gilbert (at) linaro.org> 2011-01-25 6 7 Intended to stress the difference in ABI on ARM vfp 8 */ 9 10 /* { dg-do run } */ 11 12 #include <stdarg.h> 13 14 #include "ffitest.h" 15 16 /* prints out all the parameters, and returns the sum of them all. 17 * 'x' is the number of variadic parameters all of which are double in this test 18 */ 19 double float_va_fn(unsigned int x, double y,...) 20 { 21 double total=0.0; 22 va_list ap; 23 unsigned int i; 24 25 total+=(double)x; 26 total+=y; 27 28 printf("%u: %.1f :", x, y); 29 30 va_start(ap, y); 31 for(i=0;i<x;i++) 32 { 33 double arg=va_arg(ap, double); 34 total+=arg; 35 printf(" %d:%.1f ", i, arg); 36 } 37 va_end(ap); 38 39 printf(" total: %.1f\n", total); 40 41 return total; 42 } 43 44 int main (void) 45 { 46 ffi_cif cif; 47 48 ffi_type *arg_types[5]; 49 void *values[5]; 50 double doubles[5]; 51 unsigned int firstarg; 52 double resfp; 53 54 /* First test, pass float_va_fn(0,2.0) - note there are no actual 55 * variadic parameters, but it's declared variadic so the ABI may be 56 * different. */ 57 /* Call it statically and then via ffi */ 58 resfp=float_va_fn(0,2.0); 59 /* { dg-output "0: 2.0 : total: 2.0" } */ 60 printf("compiled: %.1f\n", resfp); 61 /* { dg-output "\ncompiled: 2.0" } */ 62 63 arg_types[0] = &ffi_type_uint; 64 arg_types[1] = &ffi_type_double; 65 arg_types[2] = NULL; 66 CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 2, 2, 67 &ffi_type_double, arg_types) == FFI_OK); 68 69 firstarg = 0; 70 doubles[0] = 2.0; 71 values[0] = &firstarg; 72 values[1] = &doubles[0]; 73 ffi_call(&cif, FFI_FN(float_va_fn), &resfp, values); 74 /* { dg-output "\n0: 2.0 : total: 2.0" } */ 75 printf("ffi: %.1f\n", resfp); 76 /* { dg-output "\nffi: 2.0" } */ 77 78 /* Second test, float_va_fn(2,2.0,3.0,4.0), now with variadic params */ 79 /* Call it statically and then via ffi */ 80 resfp=float_va_fn(2,2.0,3.0,4.0); 81 /* { dg-output "\n2: 2.0 : 0:3.0 1:4.0 total: 11.0" } */ 82 printf("compiled: %.1f\n", resfp); 83 /* { dg-output "\ncompiled: 11.0" } */ 84 85 arg_types[0] = &ffi_type_uint; 86 arg_types[1] = &ffi_type_double; 87 arg_types[2] = &ffi_type_double; 88 arg_types[3] = &ffi_type_double; 89 arg_types[4] = NULL; 90 CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 2, 4, 91 &ffi_type_double, arg_types) == FFI_OK); 92 93 firstarg = 2; 94 doubles[0] = 2.0; 95 doubles[1] = 3.0; 96 doubles[2] = 4.0; 97 values[0] = &firstarg; 98 values[1] = &doubles[0]; 99 values[2] = &doubles[1]; 100 values[3] = &doubles[2]; 101 ffi_call(&cif, FFI_FN(float_va_fn), &resfp, values); 102 /* { dg-output "\n2: 2.0 : 0:3.0 1:4.0 total: 11.0" } */ 103 printf("ffi: %.1f\n", resfp); 104 /* { dg-output "\nffi: 11.0" } */ 105 106 exit(0); 107 } 108
