Add David Gilbert's variadic function call support

1 files changed, 60 insertions, 0 deletions

diff --git a/.pc/variadic/testsuite/libffi.call/cls_longdouble_va.c b/.pc/variadic/testsuite/libffi.call/cls_longdouble_va.c
new file mode 100644
index 0000000..07780ed
--- /dev/null
+++ b/.pc/variadic/testsuite/libffi.call/cls_longdouble_va.c
@@ -0,0 +1,60 @@
+/* Area:		ffi_call, closure_call
+   Purpose:		Test long doubles passed in variable argument lists.
+   Limitations:	none.
+   PR:			none.
+   Originator:	Blake Chaffin 6/6/2007	 */
+
+/* { dg-do run { xfail strongarm*-*-* xscale*-*-* } } */
+/* { dg-output "" { xfail avr32*-*-* x86_64-*-mingw* } } */
+/* { dg-output "" { xfail mips-sgi-irix6* } } PR libffi/46660 */
+/* { dg-skip-if "" arm*-*-* { "-mfloat-abi=hard" } { "" } } */
+
+#include "ffitest.h"
+
+static void
+cls_longdouble_va_fn(ffi_cif* cif __UNUSED__, void* resp, 
+		     void** args, void* userdata __UNUSED__)
+{
+	char*		format	= *(char**)args[0];
+	long double	ldValue	= *(long double*)args[1];
+
+	*(ffi_arg*)resp = printf(format, ldValue);
+}
+
+int main (void)
+{
+	ffi_cif cif;
+        void *code;
+	ffi_closure *pcl = ffi_closure_alloc(sizeof(ffi_closure), &code);
+	void* args[3];
+	ffi_type* arg_types[3];
+
+	char*		format	= "%.1Lf\n";
+	long double	ldArg	= 7;
+	ffi_arg		res		= 0;
+
+	arg_types[0] = &ffi_type_pointer;
+	arg_types[1] = &ffi_type_longdouble;
+	arg_types[2] = NULL;
+
+	CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_sint,
+		arg_types) == FFI_OK);
+
+	args[0] = &format;
+	args[1] = &ldArg;
+	args[2] = NULL;
+
+	ffi_call(&cif, FFI_FN(printf), &res, args);
+	// { dg-output "7.0" }
+	printf("res: %d\n", (int) res);
+	// { dg-output "\nres: 4" }
+
+	CHECK(ffi_prep_closure_loc(pcl, &cif, cls_longdouble_va_fn, NULL, code) == FFI_OK);
+
+	res	= ((int(*)(char*, long double))(code))(format, ldArg);
+	// { dg-output "\n7.0" }
+	printf("res: %d\n", (int) res);
+	// { dg-output "\nres: 4" }
+
+	exit(0);
+}