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feat(cgo): support six-argument Call invocations

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Co-Authored-By: Virgil <virgil@lethean.io>
This commit is contained in:
Virgil 2026-04-03 19:17:16 +00:00
parent 215d838fa7
commit c95429fbbd
3 changed files with 107 additions and 2 deletions
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10
call_test.go
View file

@ -48,10 +48,18 @@ func TestCallRejectsUnsupportedInputs(t *testing.T) {
})
assertPanics(t, "unsupported argument count", func() {
_ = Call(callFailureFunction(), 1, 2, 3, 4)
_ = Call(callFailureFunction(), 1, 2, 3, 4, 5, 6, 7)
})
}
func TestCallSupportsSixArguments(t *testing.T) {
t.Parallel()
if err := Call(callSixArgumentFunction(), 10, 11, 12, 13, 14, 15); err != nil {
t.Fatalf("expected success, got error: %v", err)
}
}
func TestErrnoMapping(t *testing.T) {
t.Parallel()

16
call_test_support.go
View file

@ -15,6 +15,13 @@ int call_failure(void) {
return 13;
}
int call_six_args(uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5) {
if (a0 == 10 && a1 == 11 && a2 == 12 && a3 == 13 && a4 == 14 && a5 == 15) {
return 0;
}
return 13;
}
uintptr_t call_sum_length_ptr(void) {
return (uintptr_t)&call_sum_length;
}
@ -22,6 +29,10 @@ uintptr_t call_sum_length_ptr(void) {
uintptr_t call_failure_ptr(void) {
return (uintptr_t)&call_failure;
}
uintptr_t call_six_args_ptr(void) {
return (uintptr_t)&call_six_args;
}
*/
import "C"
@ -37,6 +48,11 @@ func callFailureFunction() unsafe.Pointer {
return *(*unsafe.Pointer)(unsafe.Pointer(&function))
}
func callSixArgumentFunction() unsafe.Pointer {
function := C.call_six_args_ptr()
return *(*unsafe.Pointer)(unsafe.Pointer(&function))
}
func callWithErrnoZero() (int, error) {
return WithErrno(func() C.int {
return 0

83
string_conversion.go
View file

@ -8,6 +8,9 @@ typedef int (*cgo_call_int_fn0_t)(void);
typedef int (*cgo_call_int_fn1_t)(uintptr_t);
typedef int (*cgo_call_int_fn2_t)(uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn3_t)(uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn4_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn5_t)(uintptr_t, uintptr_t, uintptr_t, uintptr_t, uintptr_t);
typedef int (*cgo_call_int_fn6_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)();
@ -24,6 +27,18 @@ int cgo_call_2(uintptr_t fn, uintptr_t a0, uintptr_t a1) {
int cgo_call_3(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2) {
return ((cgo_call_int_fn3_t)fn)(a0, a1, a2);
}
int cgo_call_4(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3) {
return ((cgo_call_int_fn4_t)fn)(a0, a1, a2, a3);
}
int cgo_call_5(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4) {
return ((cgo_call_int_fn5_t)fn)(a0, a1, a2, a3, a4);
}
int cgo_call_6(uintptr_t fn, uintptr_t a0, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5) {
return ((cgo_call_int_fn6_t)fn)(a0, a1, a2, a3, a4, a5);
}
*/
import "C"
@ -109,8 +124,74 @@ func Call(function unsafe.Pointer, args ...interface{}) error {
panic("cgo.Call: unsupported argument type")
}
result = uintptr(C.cgo_call_3(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2)))
case 4:
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")
}
result = uintptr(C.cgo_call_4(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3)))
case 5:
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")
}
result = uintptr(C.cgo_call_5(C.uintptr_t(target), C.uintptr_t(a0), C.uintptr_t(a1), C.uintptr_t(a2), C.uintptr_t(a3), C.uintptr_t(a4)))
case 6:
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")
}
result = uintptr(C.cgo_call_6(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)))
default:
panic("cgo.Call: unsupported argument count: max 3")
panic("cgo.Call: unsupported argument count: max 6")
}
if result != 0 {