# ppc64le objects compiled with gcc's -fno-plt
# option. This inlines PLT calls, and generates
# additional reloc types which the internal linker
# should handle.
#
# Verifies golang.org/issue/53345
#
# Note, older gcc/clang may accept this option, but
# ignore it if binutils does not support the relocs.
[!compiler:gc] skip
[!cgo] skip
[!GOARCH:ppc64le] skip

env CGO_CFLAGS='-fno-plt -O2 -g'

	plt.AddSymRef(ctxt.Arch, sb.Sym(), 0, objabi.R_RISCV_PCREL_LO12_I, 4)
	plt.SetUint32(ctxt.Arch, plt.Size()-4, 0x0003be03) // ld      t3,0(t2)

	plt.AddUint32(ctxt.Arch, 0xfd430313) // addi    t1,t1,-44

	plt.AddSymRef(ctxt.Arch, sb.Sym(), 0, objabi.R_RISCV_PCREL_LO12_I, 4)
	plt.SetUint32(ctxt.Arch, plt.Size()-4, 0x00038293) // addi    t0,t2,0

	plt.AddUint32(ctxt.Arch, 0x00135313) // srli    t1,t1,0x1

		// for writing the entire PLT.  We just need to
		// reserve 8 bytes for each PLT entry and generate a
		// JMP_SLOT dynamic relocation for it.
		//
		// TODO(austin): ABI v1 is different
		ldr.SetPlt(s, int32(plt.Size()))

		plt.Grow(plt.Size() + 8)
		plt.SetSize(plt.Size() + 8)

		rela.AddAddrPlus(ctxt.Arch, plt.Sym(), int64(ldr.SymPlt(s)))

		plt.AddUint8(0xd2)
		plt.AddUint8(0x07)
		plt.AddUint8(0xf0)
		plt.AddUint8(0x30)
		plt.AddUint8(0x10)
		plt.AddUint8(0x08)
		// lg      %r1,16(%r1)
		plt.AddUint8(0xe3)
		plt.AddUint8(0x10)
		plt.AddUint8(0x10)
		plt.AddUint8(0x10)
		plt.AddUint8(0x00)
		plt.AddUint8(0x04)
		// br      %r1
		plt.AddUint8(0x07)
		plt.AddUint8(0xf1)
		// nopr    %r0
		plt.AddUint8(0x07)

	if target.IsElf() {
		plt := ldr.MakeSymbolUpdater(syms.PLT)
		gotplt := ldr.MakeSymbolUpdater(syms.GOTPLT)
		rela := ldr.MakeSymbolUpdater(syms.RelaPLT)
		if plt.Size() == 0 {
			panic("plt is not set up")
		}

		// adrp    x16, &got.plt[0]
		plt.AddAddrPlus4(target.Arch, gotplt.Sym(), gotplt.Size())
		plt.SetUint32(target.Arch, plt.Size()-4, 0x90000010)
		relocs := plt.Relocs()

	plt.SetUint32(target.Arch, plt.Size()-4, 0xddf90000) // ld    $25, %lo(.got.plt entry)($15)

	// Load address of got.plt entry into r24 and JALR to address in r25.
	plt.AddUint32(target.Arch, 0x03200008) // jr  $25
	plt.AddSymRef(target.Arch, gotplt.Sym(), gotplt.Size(), objabi.R_ADDRMIPS, 4)
	plt.SetUint32(target.Arch, plt.Size()-4, 0x65f80000) // daddiu $24, $15, %lo(.got.plt entry)

	// Add pointer to plt[0] to got.plt

func elfsetupplt(ctxt *ld.Link, ldr *loader.Loader, plt, got *loader.SymbolBuilder, dynamic loader.Sym) {
	if plt.Size() == 0 {
		// pushl got+4
		plt.AddUint8(0xff)

		plt.AddUint8(0x35)
		plt.AddAddrPlus(ctxt.Arch, got.Sym(), 4)

		// jmp *got+8
		plt.AddUint8(0xff)

		plt.AddUint8(0x25)
		plt.AddAddrPlus(ctxt.Arch, got.Sym(), 8)

		// zero pad
		plt.AddUint32(ctxt.Arch, 0)

	}
	return rr, false
}

func addpltreloc(ldr *loader.Loader, plt *loader.SymbolBuilder, got *loader.SymbolBuilder, s loader.Sym, typ objabi.RelocType) {
	r, _ := plt.AddRel(typ)
	r.SetSym(got.Sym())
	r.SetOff(int32(plt.Size()))
	r.SetSiz(4)
	r.SetAdd(int64(ldr.SymGot(s)) - 8)

	plt.SetReachable(true)
	plt.SetSize(plt.Size() + 4)
	plt.Grow(plt.Size())
}

func elfsetupplt(ctxt *ld.Link, ldr *loader.Loader, plt, got *loader.SymbolBuilder, dynamic loader.Sym) {
	if plt.Size() == 0 {
		// pushq got+8(IP)
		plt.AddUint8(0xff)

		plt.AddUint8(0x35)
		plt.AddPCRelPlus(ctxt.Arch, got.Sym(), 8)

		// jmpq got+16(IP)
		plt.AddUint8(0xff)

		plt.AddUint8(0x25)
		plt.AddPCRelPlus(ctxt.Arch, got.Sym(), 16)

		// nopl 0(AX)
		plt.AddUint32(ctxt.Arch, 0x00401f0f)

// NOTOC -> TOC [P10]: A PIC call stub using P10 instructions to call the global entry
// NOTOC -> TOC [P8]:  A PIC call stub using P8 instructions to call the global entry
//
// TOC   -> dynamic:              A PLT call stub is generated which saves R2.
//                                 TOC save slot is rewritten to restore TOC.
// NOTOC -> dynamic [P10]:        A stub using pcrel instructions is generated.