opcode_test.go

Documentation: github.com/cilium/ebpf/asm

     1  package asm
     2  
     3  import (
     4  	"fmt"
     5  	"testing"
     6  
     7  	qt "github.com/frankban/quicktest"
     8  )
     9  
    10  func TestGetSetJumpOp(t *testing.T) {
    11  	test := func(class Class, op JumpOp, valid bool) {
    12  		t.Run(fmt.Sprintf("%s-%s", class, op), func(t *testing.T) {
    13  			opcode := OpCode(class).SetJumpOp(op)
    14  
    15  			if valid {
    16  				qt.Assert(t, opcode, qt.Not(qt.Equals), InvalidOpCode)
    17  				qt.Assert(t, opcode.JumpOp(), qt.Equals, op)
    18  			} else {
    19  				qt.Assert(t, opcode, qt.Equals, InvalidOpCode)
    20  				qt.Assert(t, opcode.JumpOp(), qt.Equals, InvalidJumpOp)
    21  			}
    22  		})
    23  	}
    24  
    25  	// Exit, call and JA aren't allowed with Jump32
    26  	test(Jump32Class, Exit, false)
    27  	test(Jump32Class, Call, false)
    28  	test(Jump32Class, Ja, false)
    29  
    30  	// But are with Jump
    31  	test(JumpClass, Exit, true)
    32  	test(JumpClass, Call, true)
    33  	test(JumpClass, Ja, true)
    34  
    35  	// All other ops work
    36  	for _, op := range []JumpOp{
    37  		JEq,
    38  		JGT,
    39  		JGE,
    40  		JSet,
    41  		JNE,
    42  		JSGT,
    43  		JSGE,
    44  		JLT,
    45  		JLE,
    46  		JSLT,
    47  		JSLE,
    48  	} {
    49  		test(Jump32Class, op, true)
    50  		test(JumpClass, op, true)
    51  	}
    52  }
    53
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