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Commit 3e6bf5fe authored by ktietz's avatar ktietz
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* src/libffi/src/x86/ffi.c (ffi_call_win32): Add new 

        argument to prototype for specify calling-convention.
        (ffi_call): Add support for stdcall/thiscall convention.
        (ffi_prep_args): Likewise.
        (ffi_raw_call): Likewise.
        * src/x86/ffitarget.h (ffi_abi): Add FFI_THISCALL and
        FFI_FASTCALL.
        * src/x86/win32.S (_ffi_call_win32): Add support for
        fastcall/thiscall calling-convention calls.
        * testsuite/libffi.call/fastthis1_win32.c: New test.
        * testsuite/libffi.call/fastthis2_win32.c: New test.
        * testsuite/libffi.call/fastthis3_win32.c: New test.
        * testsuite/libffi.call/strlen2_win32.c: New test.
        * testsuite/libffi.call/many2_win32.c: New test.
        * testsuite/libffi.call/struct1_win32.c: New test.
        * testsuite/libffi.call/struct2_win32.c: New test.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@183676 138bc75d-0d04-0410-961f-82ee72b054a4
parent e9602c2c
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Showing with 596 additions and 19 deletions
libffi/ChangeLog
View file @ 3e6bf5fe
2012-01-28 Kai Tietz <ktietz@redhat.com>
* src/libffi/src/x86/ffi.c (ffi_call_win32): Add new
argument to prototype for specify calling-convention.
(ffi_call): Add support for stdcall/thiscall convention.
(ffi_prep_args): Likewise.
(ffi_raw_call): Likewise.
* src/x86/ffitarget.h (ffi_abi): Add FFI_THISCALL and
FFI_FASTCALL.
* src/x86/win32.S (_ffi_call_win32): Add support for
fastcall/thiscall calling-convention calls.
* testsuite/libffi.call/fastthis1_win32.c: New test.
* testsuite/libffi.call/fastthis2_win32.c: New test.
* testsuite/libffi.call/fastthis3_win32.c: New test.
* testsuite/libffi.call/strlen2_win32.c: New test.
* testsuite/libffi.call/many2_win32.c: New test.
* testsuite/libffi.call/struct1_win32.c: New test.
* testsuite/libffi.call/struct2_win32.c: New test.
2012-01-23 Andreas Schwab <schwab@linux-m68k.org>
* src/m68k/sysv.S (ffi_call_SYSV): Properly test for plain
......
libffi/src/x86/ffi.c
View file @ 3e6bf5fe
......@@ -48,6 +48,13 @@ void ffi_prep_args(char *stack, extended_cif *ecif)
register void **p_argv;
register char *argp;
register ffi_type **p_arg;
#ifdef X86_WIN32
size_t p_stack_args[2];
void *p_stack_data[2];
char *argp2 = stack;
int stack_args_count = 0;
int cabi = ecif->cif->abi;
#endif
argp = stack;
......@@ -59,6 +66,16 @@ void ffi_prep_args(char *stack, extended_cif *ecif)
)
{
*(void **) argp = ecif->rvalue;
#ifdef X86_WIN32
/* For fastcall/thiscall this is first register-passed
argument. */
if (cabi == FFI_THISCALL || cabi == FFI_FASTCALL)
{
p_stack_args[stack_args_count] = sizeof (void*);
p_stack_data[stack_args_count] = argp;
++stack_args_count;
}
#endif
argp += sizeof(void*);
}
......@@ -134,6 +151,24 @@ void ffi_prep_args(char *stack, extended_cif *ecif)
{
memcpy(argp, *p_argv, z);
}
#ifdef X86_WIN32
/* For thiscall/fastcall convention register-passed arguments
are the first two none-floating-point arguments with a size
smaller or equal to sizeof (void*). */
if ((cabi == FFI_THISCALL && stack_args_count < 1)
|| (cabi == FFI_FASTCALL && stack_args_count < 2))
{
if (z <= 4
&& ((*p_arg)->type != FFI_TYPE_FLOAT
&& (*p_arg)->type != FFI_TYPE_STRUCT))
{
p_stack_args[stack_args_count] = z;
p_stack_data[stack_args_count] = argp;
++stack_args_count;
}
}
#endif
p_argv++;
#ifdef X86_WIN64
argp += (z + sizeof(void*) - 1) & ~(sizeof(void*) - 1);
......@@ -141,7 +176,45 @@ void ffi_prep_args(char *stack, extended_cif *ecif)
argp += z;
#endif
}
#ifdef X86_WIN32
/* We need to move the register-passed arguments for thiscall/fastcall
on top of stack, so that those can be moved to registers ecx/edx by
call-handler. */
if (stack_args_count > 0)
{
size_t zz = (p_stack_args[0] + 3) & ~3;
char *h;
/* Move first argument to top-stack position. */
if (p_stack_data[0] != argp2)
{
h = alloca (zz + 1);
memcpy (h, p_stack_data[0], zz);
memmove (argp2 + zz, argp2,
(size_t) ((char *) p_stack_data[0] - (char*)argp2));
memcpy (argp2, h, zz);
}
argp2 += zz;
--stack_args_count;
if (zz > 4)
stack_args_count = 0;
/* If we have a second argument, then move it on top
after the first one. */
if (stack_args_count > 0 && p_stack_data[1] != argp2)
{
zz = p_stack_args[1];
zz = (zz + 3) & ~3;
h = alloca (zz + 1);
h = alloca (zz + 1);
memcpy (h, p_stack_data[1], zz);
memmove (argp2 + zz, argp2, (size_t) ((char*) p_stack_data[1] - (char*)argp2));
memcpy (argp2, h, zz);
}
}
#endif
return;
}
......@@ -252,7 +325,7 @@ ffi_call_win64(void (*)(char *, extended_cif *), extended_cif *,
#elif defined(X86_WIN32)
extern void
ffi_call_win32(void (*)(char *, extended_cif *), extended_cif *,
unsigned, unsigned, unsigned *, void (*fn)(void));
unsigned, unsigned, unsigned, unsigned *, void (*fn)(void));
#else
extern void ffi_call_SYSV(void (*)(char *, extended_cif *), extended_cif *,
unsigned, unsigned, unsigned *, void (*fn)(void));
......@@ -316,8 +389,37 @@ void ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
#elif defined(X86_WIN32)
case FFI_SYSV:
case FFI_STDCALL:
ffi_call_win32(ffi_prep_args, &ecif, cif->bytes, cif->flags,
ecif.rvalue, fn);
ffi_call_win32(ffi_prep_args, &ecif, cif->abi, cif->bytes, cif->flags,
ecif.rvalue, fn);
break;
case FFI_THISCALL:
case FFI_FASTCALL:
{
unsigned int abi = cif->abi;
unsigned int i, passed_regs = 0;
if (cif->flags == FFI_TYPE_STRUCT)
++passed_regs;
for (i=0; i < cif->nargs && passed_regs < 2;i++)
{
size_t sz;
if (cif->arg_types[i]->type == FFI_TYPE_FLOAT
|| cif->arg_types[i]->type == FFI_TYPE_STRUCT)
continue;
sz = (cif->arg_types[i]->size + 3) & ~3;
if (sz == 0 || sz > 4)
continue;
++passed_regs;
}
if (passed_regs < 2 && abi == FFI_FASTCALL)
abi = FFI_THISCALL;
if (passed_regs < 1 && abi == FFI_THISCALL)
abi = FFI_STDCALL;
ffi_call_win32(ffi_prep_args, &ecif, abi, cif->bytes, cif->flags,
ecif.rvalue, fn);
}
break;
#else
case FFI_SYSV:
......@@ -644,8 +746,37 @@ ffi_raw_call(ffi_cif *cif, void (*fn)(void), void *rvalue, ffi_raw *fake_avalue)
#ifdef X86_WIN32
case FFI_SYSV:
case FFI_STDCALL:
ffi_call_win32(ffi_prep_args_raw, &ecif, cif->bytes, cif->flags,
ecif.rvalue, fn);
ffi_call_win32(ffi_prep_args, &ecif, cif->abi, cif->bytes, cif->flags,
ecif.rvalue, fn);
break;
case FFI_THISCALL:
case FFI_FASTCALL:
{
unsigned int abi = cif->abi;
unsigned int i, passed_regs = 0;
if (cif->flags == FFI_TYPE_STRUCT)
++passed_regs;
for (i=0; i < cif->nargs && passed_regs < 2;i++)
{
size_t sz;
if (cif->arg_types[i]->type == FFI_TYPE_FLOAT
|| cif->arg_types[i]->type == FFI_TYPE_STRUCT)
continue;
sz = (cif->arg_types[i]->size + 3) & ~3;
if (sz == 0 || sz > 4)
continue;
++passed_regs;
}
if (passed_regs < 2 && abi == FFI_FASTCALL)
cif->abi = abi = FFI_THISCALL;
if (passed_regs < 1 && abi == FFI_THISCALL)
cif->abi = abi = FFI_STDCALL;
ffi_call_win32(ffi_prep_args, &ecif, abi, cif->bytes, cif->flags,
ecif.rvalue, fn);
}
break;
#else
case FFI_SYSV:
......
libffi/src/x86/ffitarget.h
View file @ 3e6bf5fe
......@@ -64,6 +64,8 @@ typedef enum ffi_abi {
#ifdef X86_WIN32
FFI_SYSV,
FFI_STDCALL,
FFI_THISCALL,
FFI_FASTCALL,
/* TODO: Add fastcall support for the sake of completeness */
FFI_DEFAULT_ABI = FFI_SYSV,
#endif
......
libffi/src/x86/win32.S
View file @ 3e6bf5fe
......@@ -45,6 +45,7 @@ _TEXT SEGMENT
ffi_call_win32 PROC NEAR,
ffi_prep_args : NEAR PTR DWORD,
ecif : NEAR PTR DWORD,
cif_abi : DWORD,
cif_bytes : DWORD,
cif_flags : DWORD,
rvalue : NEAR PTR DWORD,
......@@ -64,6 +65,19 @@ ffi_call_win32 PROC NEAR,
;; Return stack to previous state and call the function
add esp, 8
;; Handle thiscall and fastcall
cmp cif_abi, 3 ;; FFI_THISCALL
jz do_thiscall
cmp cif_abi, 4 ;; FFI_FASTCALL
jnz do_stdcall
mov ecx, DWORD PTR [esp]
mov edx, DWORD PTR [esp+4]
add esp, 8
jmp do_stdcall
do_thiscall:
mov ecx, DWORD PTR [esp]
add esp, 4
do_stdcall:
call fn
;; cdecl: we restore esp in the epilogue, so there's no need to
......@@ -405,7 +419,7 @@ _ffi_call_win32:
movl %esp,%ebp
.LCFI1:
# Make room for all of the new args.
movl 16(%ebp),%ecx
movl 20(%ebp),%ecx
subl %ecx,%esp
movl %esp,%eax
......@@ -417,19 +431,34 @@ _ffi_call_win32:
# Return stack to previous state and call the function
addl $8,%esp
# Handle fastcall and thiscall
cmpl $3, 16(%ebp) # FFI_THISCALL
jz .do_thiscall
cmpl $4, 16(%ebp) # FFI_FASTCALL
jnz .do_fncall
movl (%esp), %ecx
movl 4(%esp), %edx
addl $8, %esp
jmp .do_fncall
.do_thiscall:
movl (%esp), %ecx
addl $4, %esp
.do_fncall:
# FIXME: Align the stack to a 128-bit boundary to avoid
# potential performance hits.
call *28(%ebp)
call *32(%ebp)
# stdcall functions pop arguments off the stack themselves
# Load %ecx with the return type code
movl 20(%ebp),%ecx
movl 24(%ebp),%ecx
# If the return value pointer is NULL, assume no return value.
cmpl $0,24(%ebp)
cmpl $0,28(%ebp)
jne 0f
# Even if there is no space for the return value, we are
......@@ -488,50 +517,50 @@ _ffi_call_win32:
.Lretint:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
movl %eax,0(%ecx)
jmp .Lepilogue
.Lretfloat:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
fstps (%ecx)
jmp .Lepilogue
.Lretdouble:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
fstpl (%ecx)
jmp .Lepilogue
.Lretlongdouble:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
fstpt (%ecx)
jmp .Lepilogue
.Lretint64:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
movl %eax,0(%ecx)
movl %edx,4(%ecx)
jmp .Lepilogue
.Lretstruct1b:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
movb %al,0(%ecx)
jmp .Lepilogue
.Lretstruct2b:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
movw %ax,0(%ecx)
jmp .Lepilogue
.Lretstruct4b:
# Load %ecx with the pointer to storage for the return value
movl 24(%ebp),%ecx
movl 28(%ebp),%ecx
movl %eax,0(%ecx)
jmp .Lepilogue
......
libffi/testsuite/libffi.call/fastthis1_win32.c 0 → 100644
View file @ 3e6bf5fe
/* Area: ffi_call
Purpose: Check fastcall fct call on X86_WIN32 systems.
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
#include "ffitest.h"
static size_t __attribute__((fastcall)) my_fastcall_f(char *s, float a)
{
return (size_t) ((int) strlen(s) + (int) a);
}
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
ffi_arg rint;
char *s;
float v2;
args[0] = &ffi_type_pointer;
args[1] = &ffi_type_float;
values[0] = (void*) &s;
values[1] = (void*) &v2;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 2,
&ffi_type_sint, args) == FFI_OK);
s = "a";
v2 = 0.0;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 1);
s = "1234567";
v2 = -1.0;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 6);
s = "1234567890123456789012345";
v2 = 1.0;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 26);
printf("fastcall fct1 tests passed\n");
exit(0);
}
libffi/testsuite/libffi.call/fastthis2_win32.c 0 → 100644
View file @ 3e6bf5fe
/* Area: ffi_call
Purpose: Check fastcall fct call on X86_WIN32 systems.
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
#include "ffitest.h"
static size_t __attribute__((fastcall)) my_fastcall_f(float a, char *s)
{
return (size_t) ((int) strlen(s) + (int) a);
}
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
ffi_arg rint;
char *s;
float v2;
args[1] = &ffi_type_pointer;
args[0] = &ffi_type_float;
values[1] = (void*) &s;
values[0] = (void*) &v2;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 2,
&ffi_type_sint, args) == FFI_OK);
s = "a";
v2 = 0.0;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 1);
s = "1234567";
v2 = -1.0;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 6);
s = "1234567890123456789012345";
v2 = 1.0;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 26);
printf("fastcall fct2 tests passed\n");
exit(0);
}
libffi/testsuite/libffi.call/fastthis3_win32.c 0 → 100644
View file @ 3e6bf5fe
/* Area: ffi_call
Purpose: Check fastcall f call on X86_WIN32 systems.
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
#include "ffitest.h"
static size_t __attribute__((fastcall)) my_fastcall_f(float a, char *s, int i)
{
return (size_t) ((int) strlen(s) + (int) a + i);
}
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
ffi_arg rint;
char *s;
int v1;
float v2;
args[2] = &ffi_type_sint;
args[1] = &ffi_type_pointer;
args[0] = &ffi_type_float;
values[2] = (void*) &v1;
values[1] = (void*) &s;
values[0] = (void*) &v2;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 3,
&ffi_type_sint, args) == FFI_OK);
s = "a";
v1 = 1;
v2 = 0.0;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 2);
s = "1234567";
v2 = -1.0;
v1 = -2;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 4);
s = "1234567890123456789012345";
v2 = 1.0;
v1 = 2;
ffi_call(&cif, FFI_FN(my_fastcall_f), &rint, values);
CHECK(rint == 28);
printf("fastcall fct3 tests passed\n");
exit(0);
}
libffi/testsuite/libffi.call/many2_win32.c 0 → 100644
View file @ 3e6bf5fe
/* Area: ffi_call
Purpose: Check stdcall many call on X86_WIN32 systems.
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
#include "ffitest.h"
#include <float.h>
static float __attribute__((fastcall)) fastcall_many(float f1,
float f2,
float f3,
float f4,
float f5,
float f6,
float f7,
float f8,
float f9,
float f10,
float f11,
float f12,
float f13)
{
return ((f1/f2+f3/f4+f5/f6+f7/f8+f9/f10+f11/f12) * f13);
}
int main (void)
{
ffi_cif cif;
ffi_type *args[13];
void *values[13];
float fa[13];
float f, ff;
unsigned long ul;
for (ul = 0; ul < 13; ul++)
{
args[ul] = &ffi_type_float;
values[ul] = &fa[ul];
fa[ul] = (float) ul;
}
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 13,
&ffi_type_float, args) == FFI_OK);
ff = fastcall_many(fa[0], fa[1],
fa[2], fa[3],
fa[4], fa[5],
fa[6], fa[7],
fa[8], fa[9],
fa[10], fa[11], fa[12]);
ffi_call(&cif, FFI_FN(fastcall_many), &f, values);
if (f - ff < FLT_EPSILON)
printf("fastcall many arg tests ok!\n");
else
CHECK(0);
exit(0);
}
libffi/testsuite/libffi.call/strlen2_win32.c 0 → 100644
View file @ 3e6bf5fe
/* Area: ffi_call
Purpose: Check fastcall strlen call on X86_WIN32 systems.
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
#include "ffitest.h"
static size_t __attribute__((fastcall)) my_fastcall_strlen(char *s)
{
return (strlen(s));
}
int d
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
ffi_arg rint;
char *s;
args[0] = &ffi_type_pointer;
values[0] = (void*) &s;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 1,
&ffi_type_sint, args) == FFI_OK);
s = "a";
ffi_call(&cif, FFI_FN(my_fastcall_strlen), &rint, values);
CHECK(rint == 1);
s = "1234567";
ffi_call(&cif, FFI_FN(my_fastcall_strlen), &rint, values);
CHECK(rint == 7);
s = "1234567890123456789012345";
ffi_call(&cif, FFI_FN(my_fastcall_strlen), &rint, values);
CHECK(rint == 25);
printf("fastcall strlen tests passed\n");
exit(0);
}
libffi/testsuite/libffi.call/struct1_win32.c 0 → 100644
View file @ 3e6bf5fe
/* Area: ffi_call
Purpose: Check structures with fastcall/thiscall convention.
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
#include "ffitest.h"
typedef struct
{
unsigned char uc;
double d;
unsigned int ui;
} test_structure_1;
static __attribute__ ((fastcall)) test_structure_1 struct1(test_structure_1 ts)
{
ts.uc++;
ts.d--;
ts.ui++;
return ts;
}
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
ffi_type ts1_type;
ffi_type *ts1_type_elements[4];
ts1_type.size = 0;
ts1_type.alignment = 0;
ts1_type.type = FFI_TYPE_STRUCT;
ts1_type.elements = ts1_type_elements;
ts1_type_elements[0] = &ffi_type_uchar;
ts1_type_elements[1] = &ffi_type_double;
ts1_type_elements[2] = &ffi_type_uint;
ts1_type_elements[3] = NULL;
test_structure_1 ts1_arg;
/* This is a hack to get a properly aligned result buffer */
test_structure_1 *ts1_result =
(test_structure_1 *) malloc (sizeof(test_structure_1));
args[0] = &ts1_type;
values[0] = &ts1_arg;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 1,
&ts1_type, args) == FFI_OK);
ts1_arg.uc = '\x01';
ts1_arg.d = 3.14159;
ts1_arg.ui = 555;
ffi_call(&cif, FFI_FN(struct1), ts1_result, values);
CHECK(ts1_result->ui == 556);
CHECK(ts1_result->d == 3.14159 - 1);
free (ts1_result);
exit(0);
}
libffi/testsuite/libffi.call/struct2_win32.c 0 → 100644
View file @ 3e6bf5fe
/* Area: ffi_call
Purpose: Check structures in fastcall/stdcall function
Limitations: none.
PR: none.
Originator: From the original ffitest.c */
/* { dg-do run { target i?86-*-cygwin* i?86-*-mingw* } } */
#include "ffitest.h"
typedef struct
{
double d1;
double d2;
} test_structure_2;
static test_structure_2 __attribute__ ((fastcall)) struct2(test_structure_2 ts)
{
ts.d1--;
ts.d2--;
return ts;
}
int main (void)
{
ffi_cif cif;
ffi_type *args[MAX_ARGS];
void *values[MAX_ARGS];
test_structure_2 ts2_arg;
ffi_type ts2_type;
ffi_type *ts2_type_elements[3];
ts2_type.size = 0;
ts2_type.alignment = 0;
ts2_type.type = FFI_TYPE_STRUCT;
ts2_type.elements = ts2_type_elements;
ts2_type_elements[0] = &ffi_type_double;
ts2_type_elements[1] = &ffi_type_double;
ts2_type_elements[2] = NULL;
/* This is a hack to get a properly aligned result buffer */
test_structure_2 *ts2_result =
(test_structure_2 *) malloc (sizeof(test_structure_2));
args[0] = &ts2_type;
values[0] = &ts2_arg;
/* Initialize the cif */
CHECK(ffi_prep_cif(&cif, FFI_FASTCALL, 1, &ts2_type, args) == FFI_OK);
ts2_arg.d1 = 5.55;
ts2_arg.d2 = 6.66;
printf ("%g\n", ts2_arg.d1);
printf ("%g\n", ts2_arg.d2);
ffi_call(&cif, FFI_FN(struct2), ts2_result, values);
printf ("%g\n", ts2_result->d1);
printf ("%g\n", ts2_result->d2);
CHECK(ts2_result->d1 == 5.55 - 1);
CHECK(ts2_result->d2 == 6.66 - 1);
free (ts2_result);
exit(0);
}
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