1 files changed, 107 insertions, 0 deletions
diff --git a/ext/ffi_c/libffi/testsuite/libffi.call/float_va.c b/ext/ffi_c/libffi/testsuite/libffi.call/float_va.c
new file mode 100644
index 0000000..5acff91
--- /dev/null
+++ b/ext/ffi_c/libffi/testsuite/libffi.call/float_va.c
@@ -0,0 +1,107 @@
+/* Area:        fp and variadics
+   Purpose:     check fp inputs and returns work on variadics, even the fixed params
+   Limitations: None
+   PR:          none
+   Originator:  <david.gilbert@linaro.org> 2011-01-25
+
+   Intended to stress the difference in ABI on ARM vfp
+*/
+
+/* { dg-do run } */
+
+#include <stdarg.h>
+
+#include "ffitest.h"
+
+/* prints out all the parameters, and returns the sum of them all.
+ * 'x' is the number of variadic parameters all of which are double in this test
+ */
+double float_va_fn(unsigned int x, double y,...)
+{
+  double total=0.0;
+  va_list ap;
+  unsigned int i;
+
+  total+=(double)x;
+  total+=y;
+
+  printf("%u: %.1f :", x, y);
+
+  va_start(ap, y);
+  for(i=0;i<x;i++)
+  {
+    double arg=va_arg(ap, double);
+    total+=arg;
+    printf(" %d:%.1f ", i, arg);
+  }
+  va_end(ap);
+
+  printf(" total: %.1f\n", total);
+
+  return total;
+}
+
+int main (void)
+{
+  ffi_cif    cif;
+
+  ffi_type    *arg_types[5];
+  void        *values[5];
+  double        doubles[5];
+  unsigned int firstarg;
+  double        resfp;
+
+  /* First test, pass float_va_fn(0,2.0) - note there are no actual
+   * variadic parameters, but it's declared variadic so the ABI may be
+   * different. */
+  /* Call it statically and then via ffi */
+  resfp=float_va_fn(0,2.0);
+  /* { dg-output "0: 2.0 : total: 2.0" } */
+  printf("compiled: %.1f\n", resfp);
+  /* { dg-output "\ncompiled: 2.0" } */
+
+  arg_types[0] = &ffi_type_uint;
+  arg_types[1] = &ffi_type_double;
+  arg_types[2] = NULL;
+  CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 2, 2,
+        &ffi_type_double, arg_types) == FFI_OK);
+
+  firstarg = 0;
+  doubles[0] = 2.0;
+  values[0] = &firstarg;
+  values[1] = &doubles[0];
+  ffi_call(&cif, FFI_FN(float_va_fn), &resfp, values);
+  /* { dg-output "\n0: 2.0 : total: 2.0" } */
+  printf("ffi: %.1f\n", resfp);
+  /* { dg-output "\nffi: 2.0" } */
+
+  /* Second test, float_va_fn(2,2.0,3.0,4.0), now with variadic params */
+  /* Call it statically and then via ffi */
+  resfp=float_va_fn(2,2.0,3.0,4.0);
+  /* { dg-output "\n2: 2.0 : 0:3.0  1:4.0  total: 11.0" } */
+  printf("compiled: %.1f\n", resfp);
+  /* { dg-output "\ncompiled: 11.0" } */
+
+  arg_types[0] = &ffi_type_uint;
+  arg_types[1] = &ffi_type_double;
+  arg_types[2] = &ffi_type_double;
+  arg_types[3] = &ffi_type_double;
+  arg_types[4] = NULL;
+  CHECK(ffi_prep_cif_var(&cif, FFI_DEFAULT_ABI, 2, 4,
+        &ffi_type_double, arg_types) == FFI_OK);
+
+  firstarg = 2;
+  doubles[0] = 2.0;
+  doubles[1] = 3.0;
+  doubles[2] = 4.0;
+  values[0] = &firstarg;
+  values[1] = &doubles[0];
+  values[2] = &doubles[1];
+  values[3] = &doubles[2];
+  ffi_call(&cif, FFI_FN(float_va_fn), &resfp, values);
+  /* { dg-output "\n2: 2.0 : 0:3.0  1:4.0  total: 11.0" } */
+  printf("ffi: %.1f\n", resfp);
+  /* { dg-output "\nffi: 11.0" } */
+
+  exit(0);
+}