Adding upstream version 1.20.14.upstream/1.20.14upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 716 insertions, 0 deletions

diff --git a/src/cmd/internal/obj/loong64/obj.go b/src/cmd/internal/obj/loong64/obj.go
new file mode 100644
index 0000000..dc05e18
--- /dev/null
+++ b/src/cmd/internal/obj/loong64/obj.go
@@ -0,0 +1,716 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package loong64
+
+import (
+	"cmd/internal/obj"
+	"cmd/internal/objabi"
+	"cmd/internal/sys"
+	"log"
+	"math"
+)
+
+func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
+	// Rewrite JMP/JAL to symbol as TYPE_BRANCH.
+	switch p.As {
+	case AJMP,
+		AJAL,
+		ARET,
+		obj.ADUFFZERO,
+		obj.ADUFFCOPY:
+		if p.To.Sym != nil {
+			p.To.Type = obj.TYPE_BRANCH
+		}
+	}
+
+	// Rewrite float constants to values stored in memory.
+	switch p.As {
+	case AMOVF:
+		if p.From.Type == obj.TYPE_FCONST {
+			f32 := float32(p.From.Val.(float64))
+			if math.Float32bits(f32) == 0 {
+				p.As = AMOVW
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGZERO
+				break
+			}
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = ctxt.Float32Sym(f32)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+
+	case AMOVD:
+		if p.From.Type == obj.TYPE_FCONST {
+			f64 := p.From.Val.(float64)
+			if math.Float64bits(f64) == 0 {
+				p.As = AMOVV
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGZERO
+				break
+			}
+			p.From.Type = obj.TYPE_MEM
+			p.From.Sym = ctxt.Float64Sym(f64)
+			p.From.Name = obj.NAME_EXTERN
+			p.From.Offset = 0
+		}
+	}
+
+	// Rewrite SUB constants into ADD.
+	switch p.As {
+	case ASUB:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADD
+		}
+
+	case ASUBU:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDU
+		}
+
+	case ASUBV:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDV
+		}
+
+	case ASUBVU:
+		if p.From.Type == obj.TYPE_CONST {
+			p.From.Offset = -p.From.Offset
+			p.As = AADDVU
+		}
+	}
+}
+
+func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
+	c := ctxt0{ctxt: ctxt, newprog: newprog, cursym: cursym}
+
+	p := c.cursym.Func().Text
+	textstksiz := p.To.Offset
+
+	if textstksiz < 0 {
+		c.ctxt.Diag("negative frame size %d - did you mean NOFRAME?", textstksiz)
+	}
+	if p.From.Sym.NoFrame() {
+		if textstksiz != 0 {
+			c.ctxt.Diag("NOFRAME functions must have a frame size of 0, not %d", textstksiz)
+		}
+	}
+
+	c.cursym.Func().Args = p.To.Val.(int32)
+	c.cursym.Func().Locals = int32(textstksiz)
+
+	/*
+	 * find leaf subroutines
+	 * expand RET
+	 */
+
+	for p := c.cursym.Func().Text; p != nil; p = p.Link {
+		switch p.As {
+		case obj.ATEXT:
+			p.Mark |= LABEL | LEAF | SYNC
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+
+		case AMOVW,
+			AMOVV:
+			if p.To.Type == obj.TYPE_REG && p.To.Reg >= REG_SPECIAL {
+				p.Mark |= LABEL | SYNC
+				break
+			}
+			if p.From.Type == obj.TYPE_REG && p.From.Reg >= REG_SPECIAL {
+				p.Mark |= LABEL | SYNC
+			}
+
+		case ASYSCALL,
+			AWORD:
+			p.Mark |= LABEL | SYNC
+
+		case ANOR:
+			if p.To.Type == obj.TYPE_REG {
+				if p.To.Reg == REGZERO {
+					p.Mark |= LABEL | SYNC
+				}
+			}
+
+		case AJAL,
+			obj.ADUFFZERO,
+			obj.ADUFFCOPY:
+			c.cursym.Func().Text.Mark &^= LEAF
+			fallthrough
+
+		case AJMP,
+			ABEQ,
+			ABGEU,
+			ABLTU,
+			ABLTZ,
+			ABNE,
+			ABFPT, ABFPF:
+			p.Mark |= BRANCH
+			q1 := p.To.Target()
+			if q1 != nil {
+				for q1.As == obj.ANOP {
+					q1 = q1.Link
+					p.To.SetTarget(q1)
+				}
+
+				if q1.Mark&LEAF == 0 {
+					q1.Mark |= LABEL
+				}
+			}
+			q1 = p.Link
+			if q1 != nil {
+				q1.Mark |= LABEL
+			}
+
+		case ARET:
+			if p.Link != nil {
+				p.Link.Mark |= LABEL
+			}
+		}
+	}
+
+	var mov, add obj.As
+
+	add = AADDV
+	mov = AMOVV
+
+	var q *obj.Prog
+	var q1 *obj.Prog
+	autosize := int32(0)
+	var p1 *obj.Prog
+	var p2 *obj.Prog
+	for p := c.cursym.Func().Text; p != nil; p = p.Link {
+		o := p.As
+		switch o {
+		case obj.ATEXT:
+			autosize = int32(textstksiz)
+
+			if p.Mark&LEAF != 0 && autosize == 0 {
+				// A leaf function with no locals has no frame.
+				p.From.Sym.Set(obj.AttrNoFrame, true)
+			}
+
+			if !p.From.Sym.NoFrame() {
+				// If there is a stack frame at all, it includes
+				// space to save the LR.
+				autosize += int32(c.ctxt.Arch.FixedFrameSize)
+			}
+
+			if autosize&4 != 0 {
+				autosize += 4
+			}
+
+			if autosize == 0 && c.cursym.Func().Text.Mark&LEAF == 0 {
+				if c.cursym.Func().Text.From.Sym.NoSplit() {
+					if ctxt.Debugvlog {
+						ctxt.Logf("save suppressed in: %s\n", c.cursym.Name)
+					}
+
+					c.cursym.Func().Text.Mark |= LEAF
+				}
+			}
+
+			p.To.Offset = int64(autosize) - ctxt.Arch.FixedFrameSize
+
+			if c.cursym.Func().Text.Mark&LEAF != 0 {
+				c.cursym.Set(obj.AttrLeaf, true)
+				if p.From.Sym.NoFrame() {
+					break
+				}
+			}
+
+			if !p.From.Sym.NoSplit() {
+				p = c.stacksplit(p, autosize) // emit split check
+			}
+
+			q = p
+
+			if autosize != 0 {
+				// Make sure to save link register for non-empty frame, even if
+				// it is a leaf function, so that traceback works.
+				// Store link register before decrement SP, so if a signal comes
+				// during the execution of the function prologue, the traceback
+				// code will not see a half-updated stack frame.
+				// This sequence is not async preemptible, as if we open a frame
+				// at the current SP, it will clobber the saved LR.
+				q = c.ctxt.StartUnsafePoint(q, c.newprog)
+
+				q = obj.Appendp(q, newprog)
+				q.As = mov
+				q.Pos = p.Pos
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REGLINK
+				q.To.Type = obj.TYPE_MEM
+				q.To.Offset = int64(-autosize)
+				q.To.Reg = REGSP
+
+				q = obj.Appendp(q, newprog)
+				q.As = add
+				q.Pos = p.Pos
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(-autosize)
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGSP
+				q.Spadj = +autosize
+
+				q = c.ctxt.EndUnsafePoint(q, c.newprog, -1)
+			}
+
+			if c.cursym.Func().Text.From.Sym.Wrapper() && c.cursym.Func().Text.Mark&LEAF == 0 {
+				// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
+				//
+				//	MOV	g_panic(g), R1
+				//	BEQ	R1, end
+				//	MOV	panic_argp(R1), R2
+				//	ADD	$(autosize+FIXED_FRAME), R29, R3
+				//	BNE	R2, R3, end
+				//	ADD	$FIXED_FRAME, R29, R2
+				//	MOV	R2, panic_argp(R1)
+				// end:
+				//	NOP
+				//
+				// The NOP is needed to give the jumps somewhere to land.
+				// It is a liblink NOP, not an hardware NOP: it encodes to 0 instruction bytes.
+				//
+				// We don't generate this for leafs because that means the wrapped
+				// function was inlined into the wrapper.
+
+				q = obj.Appendp(q, newprog)
+
+				q.As = mov
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REGG
+				q.From.Offset = 4 * int64(c.ctxt.Arch.PtrSize) // G.panic
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R19
+
+				q = obj.Appendp(q, newprog)
+				q.As = ABEQ
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R19
+				q.To.Type = obj.TYPE_BRANCH
+				q.Mark |= BRANCH
+				p1 = q
+
+				q = obj.Appendp(q, newprog)
+				q.As = mov
+				q.From.Type = obj.TYPE_MEM
+				q.From.Reg = REG_R19
+				q.From.Offset = 0 // Panic.argp
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R4
+
+				q = obj.Appendp(q, newprog)
+				q.As = add
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize) + ctxt.Arch.FixedFrameSize
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R5
+
+				q = obj.Appendp(q, newprog)
+				q.As = ABNE
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R4
+				q.Reg = REG_R5
+				q.To.Type = obj.TYPE_BRANCH
+				q.Mark |= BRANCH
+				p2 = q
+
+				q = obj.Appendp(q, newprog)
+				q.As = add
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = ctxt.Arch.FixedFrameSize
+				q.Reg = REGSP
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REG_R4
+
+				q = obj.Appendp(q, newprog)
+				q.As = mov
+				q.From.Type = obj.TYPE_REG
+				q.From.Reg = REG_R4
+				q.To.Type = obj.TYPE_MEM
+				q.To.Reg = REG_R19
+				q.To.Offset = 0 // Panic.argp
+
+				q = obj.Appendp(q, newprog)
+
+				q.As = obj.ANOP
+				p1.To.SetTarget(q)
+				p2.To.SetTarget(q)
+			}
+
+		case ARET:
+			if p.From.Type == obj.TYPE_CONST {
+				ctxt.Diag("using BECOME (%v) is not supported!", p)
+				break
+			}
+
+			retSym := p.To.Sym
+			p.To.Name = obj.NAME_NONE // clear fields as we may modify p to other instruction
+			p.To.Sym = nil
+
+			if c.cursym.Func().Text.Mark&LEAF != 0 {
+				if autosize == 0 {
+					p.As = AJMP
+					p.From = obj.Addr{}
+					if retSym != nil { // retjmp
+						p.To.Type = obj.TYPE_BRANCH
+						p.To.Name = obj.NAME_EXTERN
+						p.To.Sym = retSym
+					} else {
+						p.To.Type = obj.TYPE_MEM
+						p.To.Reg = REGLINK
+						p.To.Offset = 0
+					}
+					p.Mark |= BRANCH
+					break
+				}
+
+				p.As = add
+				p.From.Type = obj.TYPE_CONST
+				p.From.Offset = int64(autosize)
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGSP
+				p.Spadj = -autosize
+
+				q = c.newprog()
+				q.As = AJMP
+				q.Pos = p.Pos
+				if retSym != nil { // retjmp
+					q.To.Type = obj.TYPE_BRANCH
+					q.To.Name = obj.NAME_EXTERN
+					q.To.Sym = retSym
+				} else {
+					q.To.Type = obj.TYPE_MEM
+					q.To.Offset = 0
+					q.To.Reg = REGLINK
+				}
+				q.Mark |= BRANCH
+				q.Spadj = +autosize
+
+				q.Link = p.Link
+				p.Link = q
+				break
+			}
+
+			p.As = mov
+			p.From.Type = obj.TYPE_MEM
+			p.From.Offset = 0
+			p.From.Reg = REGSP
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REGLINK
+
+			if autosize != 0 {
+				q = c.newprog()
+				q.As = add
+				q.Pos = p.Pos
+				q.From.Type = obj.TYPE_CONST
+				q.From.Offset = int64(autosize)
+				q.To.Type = obj.TYPE_REG
+				q.To.Reg = REGSP
+				q.Spadj = -autosize
+
+				q.Link = p.Link
+				p.Link = q
+			}
+
+			q1 = c.newprog()
+			q1.As = AJMP
+			q1.Pos = p.Pos
+			if retSym != nil { // retjmp
+				q1.To.Type = obj.TYPE_BRANCH
+				q1.To.Name = obj.NAME_EXTERN
+				q1.To.Sym = retSym
+			} else {
+				q1.To.Type = obj.TYPE_MEM
+				q1.To.Offset = 0
+				q1.To.Reg = REGLINK
+			}
+			q1.Mark |= BRANCH
+			q1.Spadj = +autosize
+
+			q1.Link = q.Link
+			q.Link = q1
+
+		case AADD,
+			AADDU,
+			AADDV,
+			AADDVU:
+			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
+				p.Spadj = int32(-p.From.Offset)
+			}
+
+		case obj.AGETCALLERPC:
+			if cursym.Leaf() {
+				// MOV LR, Rd
+				p.As = mov
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGLINK
+			} else {
+				// MOV (RSP), Rd
+				p.As = mov
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REGSP
+			}
+		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {
+			f := c.cursym.Func()
+			if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+				c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE
+				if ctxt.Debugvlog || !ctxt.IsAsm {
+					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
+					if !ctxt.IsAsm {
+						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+						ctxt.DiagFlush()
+						log.Fatalf("bad SPWRITE")
+					}
+				}
+			}
+		}
+	}
+}
+
+func (c *ctxt0) stacksplit(p *obj.Prog, framesize int32) *obj.Prog {
+	var mov, add obj.As
+
+	add = AADDV
+	mov = AMOVV
+	if c.ctxt.Flag_maymorestack != "" {
+		// Save LR and REGCTXT.
+		frameSize := 2 * c.ctxt.Arch.PtrSize
+
+		p = c.ctxt.StartUnsafePoint(p, c.newprog)
+
+		// MOV	REGLINK, -8/-16(SP)
+		p = obj.Appendp(p, c.newprog)
+		p.As = mov
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGLINK
+		p.To.Type = obj.TYPE_MEM
+		p.To.Offset = int64(-frameSize)
+		p.To.Reg = REGSP
+
+		// MOV	REGCTXT, -4/-8(SP)
+		p = obj.Appendp(p, c.newprog)
+		p.As = mov
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGCTXT
+		p.To.Type = obj.TYPE_MEM
+		p.To.Offset = -int64(c.ctxt.Arch.PtrSize)
+		p.To.Reg = REGSP
+
+		// ADD	$-8/$-16, SP
+		p = obj.Appendp(p, c.newprog)
+		p.As = add
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(-frameSize)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGSP
+		p.Spadj = int32(frameSize)
+
+		// JAL	maymorestack
+		p = obj.Appendp(p, c.newprog)
+		p.As = AJAL
+		p.To.Type = obj.TYPE_BRANCH
+		// See ../x86/obj6.go
+		p.To.Sym = c.ctxt.LookupABI(c.ctxt.Flag_maymorestack, c.cursym.ABI())
+		p.Mark |= BRANCH
+
+		// Restore LR and REGCTXT.
+
+		// MOV	0(SP), REGLINK
+		p = obj.Appendp(p, c.newprog)
+		p.As = mov
+		p.From.Type = obj.TYPE_MEM
+		p.From.Offset = 0
+		p.From.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGLINK
+
+		// MOV	4/8(SP), REGCTXT
+		p = obj.Appendp(p, c.newprog)
+		p.As = mov
+		p.From.Type = obj.TYPE_MEM
+		p.From.Offset = int64(c.ctxt.Arch.PtrSize)
+		p.From.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGCTXT
+
+		// ADD	$8/$16, SP
+		p = obj.Appendp(p, c.newprog)
+		p.As = add
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = int64(frameSize)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REGSP
+		p.Spadj = int32(-frameSize)
+
+		p = c.ctxt.EndUnsafePoint(p, c.newprog, -1)
+	}
+
+	// Jump back to here after morestack returns.
+	startPred := p
+
+	// MOV	g_stackguard(g), R19
+	p = obj.Appendp(p, c.newprog)
+
+	p.As = mov
+	p.From.Type = obj.TYPE_MEM
+	p.From.Reg = REGG
+	p.From.Offset = 2 * int64(c.ctxt.Arch.PtrSize) // G.stackguard0
+	if c.cursym.CFunc() {
+		p.From.Offset = 3 * int64(c.ctxt.Arch.PtrSize) // G.stackguard1
+	}
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R19
+
+	// Mark the stack bound check and morestack call async nonpreemptible.
+	// If we get preempted here, when resumed the preemption request is
+	// cleared, but we'll still call morestack, which will double the stack
+	// unnecessarily. See issue #35470.
+	p = c.ctxt.StartUnsafePoint(p, c.newprog)
+
+	var q *obj.Prog
+	if framesize <= objabi.StackSmall {
+		// small stack: SP < stackguard
+		//	AGTU	SP, stackguard, R19
+		p = obj.Appendp(p, c.newprog)
+
+		p.As = ASGTU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REGSP
+		p.Reg = REG_R19
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R19
+	} else {
+		// large stack: SP-framesize < stackguard-StackSmall
+		offset := int64(framesize) - objabi.StackSmall
+		if framesize > objabi.StackBig {
+			// Such a large stack we need to protect against underflow.
+			// The runtime guarantees SP > objabi.StackBig, but
+			// framesize is large enough that SP-framesize may
+			// underflow, causing a direct comparison with the
+			// stack guard to incorrectly succeed. We explicitly
+			// guard against underflow.
+			//
+			//      SGTU    $(framesize-StackSmall), SP, R4
+			//      BNE     R4, label-of-call-to-morestack
+
+			p = obj.Appendp(p, c.newprog)
+			p.As = ASGTU
+			p.From.Type = obj.TYPE_CONST
+			p.From.Offset = offset
+			p.Reg = REGSP
+			p.To.Type = obj.TYPE_REG
+			p.To.Reg = REG_R4
+
+			p = obj.Appendp(p, c.newprog)
+			q = p
+			p.As = ABNE
+			p.From.Type = obj.TYPE_REG
+			p.From.Reg = REG_R4
+			p.To.Type = obj.TYPE_BRANCH
+			p.Mark |= BRANCH
+		}
+
+		p = obj.Appendp(p, c.newprog)
+
+		p.As = add
+		p.From.Type = obj.TYPE_CONST
+		p.From.Offset = -offset
+		p.Reg = REGSP
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R4
+
+		p = obj.Appendp(p, c.newprog)
+		p.As = ASGTU
+		p.From.Type = obj.TYPE_REG
+		p.From.Reg = REG_R4
+		p.Reg = REG_R19
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = REG_R19
+	}
+
+	// q1: BNE	R19, done
+	p = obj.Appendp(p, c.newprog)
+	q1 := p
+
+	p.As = ABNE
+	p.From.Type = obj.TYPE_REG
+	p.From.Reg = REG_R19
+	p.To.Type = obj.TYPE_BRANCH
+	p.Mark |= BRANCH
+
+	// MOV	LINK, R5
+	p = obj.Appendp(p, c.newprog)
+
+	p.As = mov
+	p.From.Type = obj.TYPE_REG
+	p.From.Reg = REGLINK
+	p.To.Type = obj.TYPE_REG
+	p.To.Reg = REG_R5
+	if q != nil {
+		q.To.SetTarget(p)
+		p.Mark |= LABEL
+	}
+
+	p = c.ctxt.EmitEntryStackMap(c.cursym, p, c.newprog)
+
+	// JAL	runtime.morestack(SB)
+	p = obj.Appendp(p, c.newprog)
+
+	p.As = AJAL
+	p.To.Type = obj.TYPE_BRANCH
+	if c.cursym.CFunc() {
+		p.To.Sym = c.ctxt.Lookup("runtime.morestackc")
+	} else if !c.cursym.Func().Text.From.Sym.NeedCtxt() {
+		p.To.Sym = c.ctxt.Lookup("runtime.morestack_noctxt")
+	} else {
+		p.To.Sym = c.ctxt.Lookup("runtime.morestack")
+	}
+	p.Mark |= BRANCH
+
+	p = c.ctxt.EndUnsafePoint(p, c.newprog, -1)
+
+	// JMP	start
+	p = obj.Appendp(p, c.newprog)
+
+	p.As = AJMP
+	p.To.Type = obj.TYPE_BRANCH
+	p.To.SetTarget(startPred.Link)
+	startPred.Link.Mark |= LABEL
+	p.Mark |= BRANCH
+
+	// placeholder for q1's jump target
+	p = obj.Appendp(p, c.newprog)
+
+	p.As = obj.ANOP // zero-width place holder
+	q1.To.SetTarget(p)
+
+	return p
+}
+
+func (c *ctxt0) addnop(p *obj.Prog) {
+	q := c.newprog()
+	q.As = ANOOP
+	q.Pos = p.Pos
+	q.Link = p.Link
+	p.Link = q
+}
+
+var Linkloong64 = obj.LinkArch{
+	Arch:           sys.ArchLoong64,
+	Init:           buildop,
+	Preprocess:     preprocess,
+	Assemble:       span0,
+	Progedit:       progedit,
+	DWARFRegisters: LOONG64DWARFRegisters,
+}