}

func TestNoUnreadRuneAfterPeek(t *testing.T) {
	br := NewReader(strings.NewReader("example"))
	br.ReadRune()
	br.Peek(1)
	if err := br.UnreadRune(); err == nil {
		t.Error("UnreadRune didn't fail after Peek")
	}
}

func TestNoUnreadByteAfterPeek(t *testing.T) {
	br := NewReader(strings.NewReader("example"))
	br.ReadByte()
	br.Peek(1)
	if err := br.UnreadByte(); err == nil {

)

func jumpS390x(word string) bool {
	switch word {
	case "BRC",
		"BC",
		"BCL",
		"BEQ",
		"BGE",
		"BGT",
		"BL",
		"BLE",
		"BLEU",
		"BLT",
		"BLTU",
		"BNE",
		"BR",
		"BVC",
		"BVS",
		"BRCT",
		"BRCTG",
		"CMPBEQ",
		"CMPBGE",
		"CMPBGT",
		"CMPBLE",
		"CMPBLT",
		"CMPBNE",
		"CMPUBEQ",
		"CMPUBGE",
		"CMPUBGT",
		"CMPUBLE",
		"CMPUBLT",

package arch

import (
	"cmd/internal/obj"
	"cmd/internal/obj/ppc64"
)

func jumpPPC64(word string) bool {
	switch word {
	case "BC", "BCL", "BEQ", "BGE", "BGT", "BL", "BLE", "BLT", "BNE", "BR", "BVC", "BVS", "BDNZ", "BDZ", "CALL", "JMP":
		return true
	}
	return false
}

// IsPPC64CMP reports whether the op (as defined by an ppc64.A* constant) is
// one of the CMP instructions that require special handling.

</p>

<ul>
<li>
<code>NOPROF</code> = 1
<br>
(For <code>TEXT</code> items.)
Don't profile the marked function.  This flag is deprecated.
</li>
<li>
<code>DUPOK</code> = 2
<br>
It is legal to have multiple instances of this symbol in a single binary.
The linker will choose one of the duplicates to use.
</li>
<li>
<code>NOSPLIT</code> = 4
<br>
(For <code>TEXT</code> items.)

		} else {
			p.branch(targetAddr, targetProg)
		}
	case target.Type == obj.TYPE_MEM && target.Name == obj.NAME_NONE:
		// JMP 4(R0)
		*targetAddr = *target
		// On the ppc64, 9a encodes BR (CTR) as BR CTR. We do the same.
		if p.arch.Family == sys.PPC64 && target.Offset == 0 {
			targetAddr.Type = obj.TYPE_REG
		}
	case target.Type == obj.TYPE_CONST:
		// JMP $4
		*targetAddr = a[0]

		"BLT", "BLTU", "BLTZ", "BNE", "BNEZ", "CALL", "JAL", "JALR", "JMP":
		return true
	}
	return false
}

func jumpWasm(word string) bool {
	return word == "JMP" || word == "CALL" || word == "Call" || word == "Br" || word == "BrIf"
}

func archX86(linkArch *obj.LinkArch) *Arch {
	register := make(map[string]int16)
	// Create maps for easy lookup of instruction names etc.
	for i, s := range x86.Register {

pkg debug/elf, const R_ALPHA_GPRELHIGH R_ALPHA
pkg debug/elf, const R_ALPHA_GPRELLOW R_ALPHA
pkg debug/elf, const R_ALPHA_GPVALUE R_ALPHA
pkg debug/elf, const R_ALPHA_HINT R_ALPHA
pkg debug/elf, const R_ALPHA_IMMED_BR_HI32 R_ALPHA
pkg debug/elf, const R_ALPHA_IMMED_GP_16 R_ALPHA
pkg debug/elf, const R_ALPHA_IMMED_GP_HI32 R_ALPHA
pkg debug/elf, const R_ALPHA_IMMED_LO32 R_ALPHA
pkg debug/elf, const R_ALPHA_IMMED_SCN_HI32 R_ALPHA

	a generic function:
	<br>
	Each pair <code>(a<sub>i</sub>, p<sub>i</sub>)</code> of corresponding
	function arguments and parameters where <code>a<sub>i</sub></code> is not an
	<a href="#Constants">untyped constant</a> yields an equation
	<code>typeof(p<sub>i</sub>) ≡<sub>A</sub> typeof(a<sub>i</sub>)</code>.
	<br>

pkg debug/elf, const R_ALPHA_GPRELHIGH = 17
pkg debug/elf, const R_ALPHA_GPRELLOW = 18
pkg debug/elf, const R_ALPHA_GPVALUE = 16
pkg debug/elf, const R_ALPHA_HINT = 8
pkg debug/elf, const R_ALPHA_IMMED_BR_HI32 = 22
pkg debug/elf, const R_ALPHA_IMMED_GP_16 = 19
pkg debug/elf, const R_ALPHA_IMMED_GP_HI32 = 20
pkg debug/elf, const R_ALPHA_IMMED_LO32 = 23
pkg debug/elf, const R_ALPHA_IMMED_SCN_HI32 = 21

	BC 20,undefined_symbol,LR       // BC $20,CR0LT,LR // 4e800020
	BC 20,undefined_symbol+1,LR     // BC $20,CR0GT,LR // 4e810020
	JMP LR                          // 4e800020
	BR LR                           // JMP LR // 4e800020
	BCL $20,CR0LT,$1,LR             // 4e800821
	BCL $20,CR0LT,$0,LR             // 4e800021
	BCL $20,CR0LT,LR                // 4e800021