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feat(cgo): add variadic call support beyond eight args

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Co-Authored-By: Virgil <virgil@lethean.io>
This commit is contained in:
Virgil 2026-04-03 19:22:28 +00:00
parent 08729f9396
commit a03afffa36
3 changed files with 222 additions and 2 deletions
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10
call_test.go
View file

@ -82,7 +82,7 @@ func TestCallRejectsUnsupportedInputs(t *testing.T) {
})
assertPanics(t, "unsupported argument count", func() {
_ = Call(callFailureFunction(), 1, 2, 3, 4, 5, 6, 7, 8, 9)
_ = Call(callFailureFunction(), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
})
}
@ -110,6 +110,14 @@ func TestCallSupportsEightArguments(t *testing.T) {
}
}
func TestCallSupportsNineArguments(t *testing.T) {
t.Parallel()
if err := Call(callNineArgumentFunction(), 10, 11, 12, 13, 14, 15, 16, 17, 18); err != nil {
t.Fatalf("expected success, got error: %v", err)
}
}
func TestCallSupportsBufferArgument(t *testing.T) {
t.Parallel()

16
call_test_support.go
View file

@ -36,6 +36,13 @@ int call_eight_args(uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uint
return 13;
}
int call_nine_args(uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8) {
if (a0 == 10 && a1 == 11 && a2 == 12 && a3 == 13 && a4 == 14 && a5 == 15 && a6 == 16 && a7 == 17 && a8 == 18) {
return 0;
}
return 13;
}
int call_buffer_argument(uintptr_t value) {
return value == 0 ? 13 : 0;
}
@ -60,6 +67,10 @@ uintptr_t call_eight_args_ptr(void) {
return (uintptr_t)&call_eight_args;
}
uintptr_t call_nine_args_ptr(void) {
return (uintptr_t)&call_nine_args;
}
uintptr_t call_buffer_argument_ptr(void) {
return (uintptr_t)&call_buffer_argument;
}
@ -94,6 +105,11 @@ func callEightArgumentFunction() unsafe.Pointer {
return *(*unsafe.Pointer)(unsafe.Pointer(&function))
}
func callNineArgumentFunction() unsafe.Pointer {
function := C.call_nine_args_ptr()
return *(*unsafe.Pointer)(unsafe.Pointer(&function))
}
func callBufferArgumentFunction() unsafe.Pointer {
function := C.call_buffer_argument_ptr()
return *(*unsafe.Pointer)(unsafe.Pointer(&function))

198
string_conversion.go
View file

@ -13,6 +13,10 @@ typedef int (*cgo_call_int_fn5_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, ui
typedef int (*cgo_call_int_fn6_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn7_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn8_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn9_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn10_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn11_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn12_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
int cgo_call_0(uintptr_t fn) {
return ((cgo_call_int_fn0_t)fn)();
@ -49,6 +53,22 @@ int cgo_call_7(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t
int cgo_call_8(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7) {
return ((cgo_call_int_fn8_t)fn)(a0, a1, a2, a3, a4, a5, a6, a7);
}
int cgo_call_9(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8) {
return ((cgo_call_int_fn9_t)fn)(a0, a1, a2, a3, a4, a5, a6, a7, a8);
}
int cgo_call_10(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9) {
return ((cgo_call_int_fn10_t)fn)(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
}
int cgo_call_11(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9, uintptr_t a10) {
return ((cgo_call_int_fn11_t)fn)(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10);
}
int cgo_call_12(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9, uintptr_t a10, uintptr_t a11) {
return ((cgo_call_int_fn12_t)fn)(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11);
}
*/
import "C"
@ -273,8 +293,184 @@ func Call(function unsafe.Pointer, args ...interface{}) error {
panic("cgo.Call: unsupported argument type")
}
result = C.cgo_call_8(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3), C.uintptr_t(a4), C.uintptr_t(a5), C.uintptr_t(a6), C.uintptr_t(a7))
case 9:
a0, ok := toSyscallArg(args[0])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a1, ok := toSyscallArg(args[1])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a2, ok := toSyscallArg(args[2])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a3, ok := toSyscallArg(args[3])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a4, ok := toSyscallArg(args[4])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a5, ok := toSyscallArg(args[5])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a6, ok := toSyscallArg(args[6])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a7, ok := toSyscallArg(args[7])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a8, ok := toSyscallArg(args[8])
if !ok {
panic("cgo.Call: unsupported argument type")
}
result = C.cgo_call_9(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3), C.uintptr_t(a4), C.uintptr_t(a5), C.uintptr_t(a6), C.uintptr_t(a7), C.uintptr_t(a8))
case 10:
a0, ok := toSyscallArg(args[0])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a1, ok := toSyscallArg(args[1])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a2, ok := toSyscallArg(args[2])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a3, ok := toSyscallArg(args[3])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a4, ok := toSyscallArg(args[4])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a5, ok := toSyscallArg(args[5])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a6, ok := toSyscallArg(args[6])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a7, ok := toSyscallArg(args[7])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a8, ok := toSyscallArg(args[8])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a9, ok := toSyscallArg(args[9])
if !ok {
panic("cgo.Call: unsupported argument type")
}
result = C.cgo_call_10(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3), C.uintptr_t(a4), C.uintptr_t(a5), C.uintptr_t(a6), C.uintptr_t(a7), C.uintptr_t(a8), C.uintptr_t(a9))
case 11:
a0, ok := toSyscallArg(args[0])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a1, ok := toSyscallArg(args[1])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a2, ok := toSyscallArg(args[2])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a3, ok := toSyscallArg(args[3])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a4, ok := toSyscallArg(args[4])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a5, ok := toSyscallArg(args[5])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a6, ok := toSyscallArg(args[6])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a7, ok := toSyscallArg(args[7])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a8, ok := toSyscallArg(args[8])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a9, ok := toSyscallArg(args[9])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a10, ok := toSyscallArg(args[10])
if !ok {
panic("cgo.Call: unsupported argument type")
}
result = C.cgo_call_11(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3), C.uintptr_t(a4), C.uintptr_t(a5), C.uintptr_t(a6), C.uintptr_t(a7), C.uintptr_t(a8), C.uintptr_t(a9), C.uintptr_t(a10))
case 12:
a0, ok := toSyscallArg(args[0])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a1, ok := toSyscallArg(args[1])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a2, ok := toSyscallArg(args[2])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a3, ok := toSyscallArg(args[3])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a4, ok := toSyscallArg(args[4])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a5, ok := toSyscallArg(args[5])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a6, ok := toSyscallArg(args[6])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a7, ok := toSyscallArg(args[7])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a8, ok := toSyscallArg(args[8])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a9, ok := toSyscallArg(args[9])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a10, ok := toSyscallArg(args[10])
if !ok {
panic("cgo.Call: unsupported argument type")
}
a11, ok := toSyscallArg(args[11])
if !ok {
panic("cgo.Call: unsupported argument type")
}
result = C.cgo_call_12(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3), C.uintptr_t(a4), C.uintptr_t(a5), C.uintptr_t(a6), C.uintptr_t(a7), C.uintptr_t(a8), C.uintptr_t(a9), C.uintptr_t(a10), C.uintptr_t(a11))
default:
panic("cgo.Call: unsupported argument count: max 8")
panic("cgo.Call: unsupported argument count: max 12")
}
if result != 0 {