struct_arm_regression_test.go RawHistoryFolder

1//go:build arm && (freebsd || linux || netbsd || windows)
2
3package purego
4
5import (
6	"reflect"
7	"testing"
8	"unsafe"
9)
10
11func TestARMAddStructCopiesUnaddressableValue(t *testing.T) {
12	type sample struct{ X uint32 }
13	var numInts, numFloats, numStack int
14	var ptr uintptr
15	keepAlive := addStruct(reflect.ValueOf(sample{X: 7}), &numInts, &numFloats, &numStack, func(v uintptr) {
16		ptr = v
17	}, func(uintptr) {
18		t.Fatal("unexpected float register")
19	}, func(uintptr) {
20		t.Fatal("unexpected stack slot")
21	}, nil)
22	if len(keepAlive) == 0 {
23		t.Fatal("expected copied keepAlive value")
24	}
25	if got := *(*uint32)(unsafe.Pointer(ptr)); got != 7 {
26		t.Fatalf("copied value = %#x, want %#x", got, uint32(7))
27	}
28}
29
30func TestARMPlaceRegistersReadsUnaddressableValue(t *testing.T) {
31	type sample struct{ X uint32 }
32	var ints []uintptr
33	placeRegisters(reflect.ValueOf(sample{X: 7}), func(uintptr) {
34		t.Fatal("unexpected float register")
35	}, func(v uintptr) {
36		ints = append(ints, v)
37	})
38	if len(ints) != 1 || ints[0] != 7 {
39		t.Fatalf("placeRegisters() = %#v, want [7]", ints)
40	}
41}