Golang Prog.Reg方法代码示例

本文整理汇总了Golang中rsc/io/tmp/slowgc/liblink.Prog.Reg方法的典型用法代码示例。如果您正苦于以下问题：Golang Prog.Reg方法的具体用法？Golang Prog.Reg怎么用？Golang Prog.Reg使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类rsc/io/tmp/slowgc/liblink.Prog的用法示例。

在下文中一共展示了Prog.Reg方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: readprog

func readprog(b *bufio.Reader, p *liblink.Prog) {
	if !undef[p] {
		panic("double-def")
	}
	delete(undef, p)
	p.Pc = rdint(b)
	p.Lineno = int32(rdint(b))
	p.Link = rdprog(b)
	p.As = int16(rdint(b))
	p.Reg = uint8(rdint(b))
	p.Scond = uint8(rdint(b))
	p.Width = int8(rdint(b))
	readaddr(b, &p.From)
	readaddr(b, &p.To)
}

开发者ID:rsc，项目名称:tmp，代码行数:15，代码来源:main.go

示例2: stacksplit

func stacksplit(ctxt *liblink.Link, p *liblink.Prog, framesize int32, noctxt int) *liblink.Prog {
	// MOVW			g_stackguard(g), R1
	p = liblink.Appendp(ctxt, p)

	p.As = AMOVW
	p.From.Type_ = D_OREG
	p.From.Reg = REGG
	p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
	if ctxt.Cursym.Cfunc != 0 {
		p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
	}
	p.To.Type_ = D_REG
	p.To.Reg = 1

	if framesize <= liblink.StackSmall {
		// small stack: SP < stackguard
		//	CMP	stackguard, SP
		p = liblink.Appendp(ctxt, p)

		p.As = ACMP
		p.From.Type_ = D_REG
		p.From.Reg = 1
		p.Reg = REGSP
	} else if framesize <= liblink.StackBig {
		// large stack: SP-framesize < stackguard-StackSmall
		//	MOVW $-framesize(SP), R2
		//	CMP stackguard, R2
		p = liblink.Appendp(ctxt, p)

		p.As = AMOVW
		p.From.Type_ = D_CONST
		p.From.Reg = REGSP
		p.From.Offset = int64(-framesize)
		p.To.Type_ = D_REG
		p.To.Reg = 2

		p = liblink.Appendp(ctxt, p)
		p.As = ACMP
		p.From.Type_ = D_REG
		p.From.Reg = 1
		p.Reg = 2
	} else {

		// Such a large stack we need to protect against wraparound
		// if SP is close to zero.
		//	SP-stackguard+StackGuard < framesize + (StackGuard-StackSmall)
		// The +StackGuard on both sides is required to keep the left side positive:
		// SP is allowed to be slightly below stackguard. See stack.h.
		//	CMP $StackPreempt, R1
		//	MOVW.NE $StackGuard(SP), R2
		//	SUB.NE R1, R2
		//	MOVW.NE $(framesize+(StackGuard-StackSmall)), R3
		//	CMP.NE R3, R2
		p = liblink.Appendp(ctxt, p)

		p.As = ACMP
		p.From.Type_ = D_CONST
		p.From.Offset = int64(uint32(liblink.StackPreempt & (1<<32 - 1)))
		p.Reg = 1

		p = liblink.Appendp(ctxt, p)
		p.As = AMOVW
		p.From.Type_ = D_CONST
		p.From.Reg = REGSP
		p.From.Offset = liblink.StackGuard
		p.To.Type_ = D_REG
		p.To.Reg = 2
		p.Scond = C_SCOND_NE

		p = liblink.Appendp(ctxt, p)
		p.As = ASUB
		p.From.Type_ = D_REG
		p.From.Reg = 1
		p.To.Type_ = D_REG
		p.To.Reg = 2
		p.Scond = C_SCOND_NE

		p = liblink.Appendp(ctxt, p)
		p.As = AMOVW
		p.From.Type_ = D_CONST
		p.From.Offset = int64(framesize) + (liblink.StackGuard - liblink.StackSmall)
		p.To.Type_ = D_REG
		p.To.Reg = 3
		p.Scond = C_SCOND_NE

		p = liblink.Appendp(ctxt, p)
		p.As = ACMP
		p.From.Type_ = D_REG
		p.From.Reg = 3
		p.Reg = 2
		p.Scond = C_SCOND_NE
	}

	// MOVW.LS	R14, R3
	p = liblink.Appendp(ctxt, p)

	p.As = AMOVW
	p.Scond = C_SCOND_LS
	p.From.Type_ = D_REG
	p.From.Reg = REGLINK
//.........这里部分代码省略.........

开发者ID:rsc，项目名称:tmp，代码行数:101，代码来源:obj5.go

示例3: settextflag

func settextflag(p *liblink.Prog, f int) {
	p.Reg = uint8(f)
}

开发者ID:rsc，项目名称:tmp，代码行数:3，代码来源:obj5.go

示例4: addstacksplit

func addstacksplit(ctxt *liblink.Link, cursym *liblink.LSym) {
	var p *liblink.Prog
	var pl *liblink.Prog
	var p1 *liblink.Prog
	var p2 *liblink.Prog
	var q *liblink.Prog
	var q1 *liblink.Prog
	var q2 *liblink.Prog
	var o int
	var autosize int32
	var autoffset int32

	autosize = 0

	if ctxt.Symmorestack[0] == nil {
		ctxt.Symmorestack[0] = liblink.Linklookup(ctxt, "runtime.morestack", 0)
		ctxt.Symmorestack[1] = liblink.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
	}

	q = nil

	ctxt.Cursym = cursym

	if cursym.Text == nil || cursym.Text.Link == nil {
		return
	}

	softfloat(ctxt, cursym)

	p = cursym.Text
	autoffset = int32(p.To.Offset)
	if autoffset < 0 {
		autoffset = 0
	}
	cursym.Locals = autoffset
	cursym.Args = p.To.Offset2

	if ctxt.Debugzerostack != 0 {
		if autoffset != 0 && !(p.Reg&liblink.NOSPLIT != 0) {
			// MOVW $4(R13), R1
			p = liblink.Appendp(ctxt, p)

			p.As = AMOVW
			p.From.Type_ = D_CONST
			p.From.Reg = 13
			p.From.Offset = 4
			p.To.Type_ = D_REG
			p.To.Reg = 1

			// MOVW $n(R13), R2
			p = liblink.Appendp(ctxt, p)

			p.As = AMOVW
			p.From.Type_ = D_CONST
			p.From.Reg = 13
			p.From.Offset = 4 + int64(autoffset)
			p.To.Type_ = D_REG
			p.To.Reg = 2

			// MOVW $0, R3
			p = liblink.Appendp(ctxt, p)

			p.As = AMOVW
			p.From.Type_ = D_CONST
			p.From.Offset = 0
			p.To.Type_ = D_REG
			p.To.Reg = 3

			// L:
			//	MOVW.nil R3, 0(R1) +4
			//	CMP R1, R2
			//	BNE L
			pl = liblink.Appendp(ctxt, p)
			p = pl

			p.As = AMOVW
			p.From.Type_ = D_REG
			p.From.Reg = 3
			p.To.Type_ = D_OREG
			p.To.Reg = 1
			p.To.Offset = 4
			p.Scond |= C_PBIT

			p = liblink.Appendp(ctxt, p)
			p.As = ACMP
			p.From.Type_ = D_REG
			p.From.Reg = 1
			p.Reg = 2

			p = liblink.Appendp(ctxt, p)
			p.As = ABNE
			p.To.Type_ = D_BRANCH
			p.Pcond = pl
		}
	}

	/*
	 * find leaf subroutines
	 * strip NOPs
	 * expand RET
//.........这里部分代码省略.........

开发者ID:rsc，项目名称:tmp，代码行数:101，代码来源:obj5.go

示例5: stacksplit

/*
// instruction scheduling
	if(debug['Q'] == 0)
		return;

	curtext = nil;
	q = nil;	// p - 1
	q1 = firstp;	// top of block
	o = 0;		// count of instructions
	for(p = firstp; p != nil; p = p1) {
		p1 = p->link;
		o++;
		if(p->mark & NOSCHED){
			if(q1 != p){
				sched(q1, q);
			}
			for(; p != nil; p = p->link){
				if(!(p->mark & NOSCHED))
					break;
				q = p;
			}
			p1 = p;
			q1 = p;
			o = 0;
			continue;
		}
		if(p->mark & (LABEL|SYNC)) {
			if(q1 != p)
				sched(q1, q);
			q1 = p;
			o = 1;
		}
		if(p->mark & (BRANCH|SYNC)) {
			sched(q1, p);
			q1 = p1;
			o = 0;
		}
		if(o >= NSCHED) {
			sched(q1, p);
			q1 = p1;
			o = 0;
		}
		q = p;
	}
*/
func stacksplit(ctxt *liblink.Link, p *liblink.Prog, framesize int32, noctxt int) *liblink.Prog {

	var q *liblink.Prog
	var q1 *liblink.Prog

	// MOVD	g_stackguard(g), R3
	p = liblink.Appendp(ctxt, p)

	p.As = AMOVD
	p.From.Type_ = D_OREG
	p.From.Reg = REGG
	p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
	if ctxt.Cursym.Cfunc != 0 {
		p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
	}
	p.To.Type_ = D_REG
	p.To.Reg = 3

	q = nil
	if framesize <= liblink.StackSmall {
		// small stack: SP < stackguard
		//	CMP	stackguard, SP
		p = liblink.Appendp(ctxt, p)

		p.As = ACMPU
		p.From.Type_ = D_REG
		p.From.Reg = 3
		p.To.Type_ = D_REG
		p.To.Reg = REGSP
	} else if framesize <= liblink.StackBig {
		// large stack: SP-framesize < stackguard-StackSmall
		//	ADD $-framesize, SP, R4
		//	CMP stackguard, R4
		p = liblink.Appendp(ctxt, p)

		p.As = AADD
		p.From.Type_ = D_CONST
		p.From.Offset = int64(-framesize)
		p.Reg = REGSP
		p.To.Type_ = D_REG
		p.To.Reg = 4

		p = liblink.Appendp(ctxt, p)
		p.As = ACMPU
		p.From.Type_ = D_REG
		p.From.Reg = 3
		p.To.Type_ = D_REG
		p.To.Reg = 4
	} else {

		// Such a large stack we need to protect against wraparound.
		// If SP is close to zero:
		//	SP-stackguard+StackGuard <= framesize + (StackGuard-StackSmall)
		// The +StackGuard on both sides is required to keep the left side positive:
		// SP is allowed to be slightly below stackguard. See stack.h.
//.........这里部分代码省略.........

开发者ID:rsc，项目名称:tmp，代码行数:101，代码来源:obj9.go

示例6: addstacksplit

func addstacksplit(ctxt *liblink.Link, cursym *liblink.LSym) {
	var p *liblink.Prog
	var q *liblink.Prog
	var p1 *liblink.Prog
	var p2 *liblink.Prog
	var q1 *liblink.Prog
	var o int
	var mov int
	var aoffset int
	var textstksiz int64
	var textarg int64
	var autosize int32

	if ctxt.Symmorestack[0] == nil {
		ctxt.Symmorestack[0] = liblink.Linklookup(ctxt, "runtime.morestack", 0)
		ctxt.Symmorestack[1] = liblink.Linklookup(ctxt, "runtime.morestack_noctxt", 0)
	}

	// TODO(minux): add morestack short-cuts with small fixed frame-size.
	ctxt.Cursym = cursym

	if cursym.Text == nil || cursym.Text.Link == nil {
		return
	}

	p = cursym.Text
	parsetextconst(p.To.Offset, &textstksiz, &textarg)

	cursym.Args = int32(p.To.Offset >> 32)
	cursym.Locals = int32(textstksiz)

	/*
	 * find leaf subroutines
	 * strip NOPs
	 * expand RET
	 * expand BECOME pseudo
	 */
	if ctxt.Debugvlog != 0 {

		fmt.Fprintf(ctxt.Bso, "%5.2f noops\n", liblink.Cputime())
	}
	liblink.Bflush(ctxt.Bso)

	q = nil
	for p = cursym.Text; p != nil; p = p.Link {
		switch p.As {
		/* too hard, just leave alone */
		case ATEXT:
			q = p

			p.Mark |= LABEL | LEAF | SYNC
			if p.Link != nil {
				p.Link.Mark |= LABEL
			}

		case ANOR:
			q = p
			if p.To.Type_ == D_REG {
				if p.To.Reg == REGZERO {
					p.Mark |= LABEL | SYNC
				}
			}

		case ALWAR,
			ASTWCCC,
			AECIWX,
			AECOWX,
			AEIEIO,
			AICBI,
			AISYNC,
			ATLBIE,
			ATLBIEL,
			ASLBIA,
			ASLBIE,
			ASLBMFEE,
			ASLBMFEV,
			ASLBMTE,
			ADCBF,
			ADCBI,
			ADCBST,
			ADCBT,
			ADCBTST,
			ADCBZ,
			ASYNC,
			ATLBSYNC,
			APTESYNC,
			ATW,
			AWORD,
			ARFI,
			ARFCI,
			ARFID,
			AHRFID:
			q = p
			p.Mark |= LABEL | SYNC
			continue

		case AMOVW,
			AMOVWZ,
			AMOVD:
			q = p
//.........这里部分代码省略.........

开发者ID:rsc，项目名称:tmp，代码行数:101，代码来源:obj9.go

注：本文中的rsc/io/tmp/slowgc/liblink.Prog.Reg方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。