asm_arm64_test.go

     1  // Copyright 2016 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package arm64
     6  
     7  import "testing"
     8  
     9  func testvmovs() (r1, r2 uint64)
    10  func testvmovd() (r1, r2 uint64)
    11  func testvmovq() (r1, r2 uint64)
    12  
    13  func TestVMOV(t *testing.T) {
    14  	tests := []struct {
    15  		op           string
    16  		vmovFunc     func() (uint64, uint64)
    17  		wantA, wantB uint64
    18  	}{
    19  		{"VMOVS", testvmovs, 0x80402010, 0},
    20  		{"VMOVD", testvmovd, 0x7040201008040201, 0},
    21  		{"VMOVQ", testvmovq, 0x7040201008040201, 0x3040201008040201},
    22  	}
    23  	for _, test := range tests {
    24  		gotA, gotB := test.vmovFunc()
    25  		if gotA != test.wantA || gotB != test.wantB {
    26  			t.Errorf("%v: got: a=0x%x, b=0x%x, want: a=0x%x, b=0x%x", test.op, gotA, gotB, test.wantA, test.wantB)
    27  		}
    28  	}
    29  }
    30  
    31  func testmovk() uint64
    32  
    33  // TestMOVK makes sure MOVK with a very large constant works. See issue 52261.
    34  func TestMOVK(t *testing.T) {
    35  	x := testmovk()
    36  	want := uint64(40000 << 48)
    37  	if x != want {
    38  		t.Errorf("Got %x want %x\n", x, want)
    39  	}
    40  }
    41  
    42  func testCombined() (a uint64, b uint64)
    43  func TestCombined(t *testing.T) {
    44  	got1, got2 := testCombined()
    45  	want1 := uint64(0xaaaaaaaaaaaaaaab)
    46  	want2 := uint64(0x0ff019940ff00ff0)
    47  	if got1 != want1 {
    48  		t.Errorf("First result, got %x want %x", got1, want1)
    49  	}
    50  	if got2 != want2 {
    51  		t.Errorf("First result, got %x want %x", got2, want2)
    52  	}
    53  }
    54
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