本文整理汇总了Golang中rsc/io/tmp/slowgc/liblink.Prog.Link方法的典型用法代码示例。如果您正苦于以下问题：Golang Prog.Link方法的具体用法？Golang Prog.Link怎么用？Golang Prog.Link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.Link方法的9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: follow
func follow(ctxt *liblink.Link, s *liblink.LSym) {
var firstp *liblink.Prog
var lastp *liblink.Prog
ctxt.Cursym = s
firstp = ctxt.Arch.Prg()
lastp = firstp
xfol(ctxt, s.Text, &lastp)
lastp.Link = nil
s.Text = firstp.Link
}示例2: 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)
}示例3: 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.........
示例4: softfloat
func softfloat(ctxt *liblink.Link, cursym *liblink.LSym) {
var p *liblink.Prog
var next *liblink.Prog
var symsfloat *liblink.LSym
var wasfloat int
if ctxt.Goarm > 5 {
return
}
symsfloat = liblink.Linklookup(ctxt, "_sfloat", 0)
wasfloat = 0
for p = cursym.Text; p != nil; p = p.Link {
if p.Pcond != nil {
p.Pcond.Mark |= LABEL
}
}
for p = cursym.Text; p != nil; p = p.Link {
switch p.As {
case AMOVW:
if p.To.Type_ == D_FREG || p.From.Type_ == D_FREG {
goto soft
}
goto notsoft
case AMOVWD,
AMOVWF,
AMOVDW,
AMOVFW,
AMOVFD,
AMOVDF,
AMOVF,
AMOVD,
ACMPF,
ACMPD,
AADDF,
AADDD,
ASUBF,
ASUBD,
AMULF,
AMULD,
ADIVF,
ADIVD,
ASQRTF,
ASQRTD,
AABSF,
AABSD:
goto soft
default:
goto notsoft
}
soft:
if !(wasfloat != 0) || (p.Mark&LABEL != 0) {
next = ctxt.Arch.Prg()
*next = *p
// BL _sfloat(SB)
*p = zprg5
p.Link = next
p.As = ABL
p.To.Type_ = D_BRANCH
p.To.Sym = symsfloat
p.Lineno = next.Lineno
p = next
wasfloat = 1
}
continue
notsoft:
wasfloat = 0
}
}示例5: xfol
func xfol(ctxt *liblink.Link, p *liblink.Prog, last **liblink.Prog) {
var q *liblink.Prog
var r *liblink.Prog
var a int
var i int
loop:
if p == nil {
return
}
a = int(p.As)
if a == AB {
q = p.Pcond
if q != nil && q.As != ATEXT {
p.Mark |= FOLL
p = q
if !(p.Mark&FOLL != 0) {
goto loop
}
}
}
if p.Mark&FOLL != 0 {
i = 0
q = p
for ; i < 4; (func() { i++; q = q.Link })() {
if q == *last || q == nil {
break
}
a = int(q.As)
if a == ANOP {
i--
continue
}
if a == AB || (a == ARET && q.Scond == C_SCOND_NONE) || a == ARFE || a == AUNDEF {
goto copy
}
if q.Pcond == nil || (q.Pcond.Mark&FOLL != 0) {
continue
}
if a != ABEQ && a != ABNE {
continue
}
copy:
for {
r = ctxt.Arch.Prg()
*r = *p
if !(r.Mark&FOLL != 0) {
fmt.Printf("can't happen 1\n")
}
r.Mark |= FOLL
if p != q {
p = p.Link
(*last).Link = r
*last = r
continue
}
(*last).Link = r
*last = r
if a == AB || (a == ARET && q.Scond == C_SCOND_NONE) || a == ARFE || a == AUNDEF {
return
}
r.As = ABNE
if a == ABNE {
r.As = ABEQ
}
r.Pcond = p.Link
r.Link = p.Pcond
if !(r.Link.Mark&FOLL != 0) {
xfol(ctxt, r.Link, last)
}
if !(r.Pcond.Mark&FOLL != 0) {
fmt.Printf("can't happen 2\n")
}
return
}
}
a = AB
q = ctxt.Arch.Prg()
q.As = int16(a)
q.Lineno = p.Lineno
q.To.Type_ = D_BRANCH
q.To.Offset = p.Pc
q.Pcond = p
p = q
}
p.Mark |= FOLL
(*last).Link = p
*last = p
if a == AB || (a == ARET && p.Scond == C_SCOND_NONE) || a == ARFE || a == AUNDEF {
return
}
if p.Pcond != nil {
if a != ABL && a != ABX && p.Link != nil {
//.........这里部分代码省略.........
示例6: xfol
func xfol(ctxt *liblink.Link, p *liblink.Prog, last **liblink.Prog) {
var q *liblink.Prog
var r *liblink.Prog
var a int
var b int
var i int
loop:
if p == nil {
return
}
a = int(p.As)
if a == ABR {
q = p.Pcond
if (p.Mark&NOSCHED != 0) || q != nil && (q.Mark&NOSCHED != 0) {
p.Mark |= FOLL
(*last).Link = p
*last = p
p = p.Link
xfol(ctxt, p, last)
p = q
if p != nil && !(p.Mark&FOLL != 0) {
goto loop
}
return
}
if q != nil {
p.Mark |= FOLL
p = q
if !(p.Mark&FOLL != 0) {
goto loop
}
}
}
if p.Mark&FOLL != 0 {
i = 0
q = p
for ; i < 4; (func() { i++; q = q.Link })() {
if q == *last || (q.Mark&NOSCHED != 0) {
break
}
b = 0 /* set */
a = int(q.As)
if a == ANOP {
i--
continue
}
if a == ABR || a == ARETURN || a == ARFI || a == ARFCI || a == ARFID || a == AHRFID {
goto copy
}
if !(q.Pcond != nil) || (q.Pcond.Mark&FOLL != 0) {
continue
}
b = relinv(a)
if !(b != 0) {
continue
}
copy:
for {
r = ctxt.Arch.Prg()
*r = *p
if !(r.Mark&FOLL != 0) {
fmt.Printf("cant happen 1\n")
}
r.Mark |= FOLL
if p != q {
p = p.Link
(*last).Link = r
*last = r
continue
}
(*last).Link = r
*last = r
if a == ABR || a == ARETURN || a == ARFI || a == ARFCI || a == ARFID || a == AHRFID {
return
}
r.As = int16(b)
r.Pcond = p.Link
r.Link = p.Pcond
if !(r.Link.Mark&FOLL != 0) {
xfol(ctxt, r.Link, last)
}
if !(r.Pcond.Mark&FOLL != 0) {
fmt.Printf("cant happen 2\n")
}
return
}
}
a = ABR
q = ctxt.Arch.Prg()
q.As = int16(a)
q.Lineno = p.Lineno
q.To.Type_ = D_BRANCH
q.To.Offset = p.Pc
//.........这里部分代码省略.........
示例7: 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.........
示例8: xfol
func xfol(ctxt *liblink.Link, p *liblink.Prog, last **liblink.Prog) {
var q *liblink.Prog
var i int
var a int
loop:
if p == nil {
return
}
if p.As == AJMP {
q = p.Pcond
if q != nil && q.As != ATEXT {
/* mark instruction as done and continue layout at target of jump */
p.Mark = 1
p = q
if p.Mark == 0 {
goto loop
}
}
}
if p.Mark != 0 {
/*
* p goes here, but already used it elsewhere.
* copy up to 4 instructions or else branch to other copy.
*/
i = 0
q = p
for ; i < 4; (func() { i++; q = q.Link })() {
if q == nil {
break
}
if q == *last {
break
}
a = int(q.As)
if a == ANOP {
i--
continue
}
if nofollow(a) != 0 || pushpop(a) != 0 {
break // NOTE(rsc): arm does goto copy
}
if q.Pcond == nil || q.Pcond.Mark != 0 {
continue
}
if a == ACALL || a == ALOOP {
continue
}
for {
if p.As == ANOP {
p = p.Link
continue
}
q = liblink.Copyp(ctxt, p)
p = p.Link
q.Mark = 1
(*last).Link = q
*last = q
if int(q.As) != a || q.Pcond == nil || q.Pcond.Mark != 0 {
continue
}
q.As = int16(relinv(int(q.As)))
p = q.Pcond
q.Pcond = q.Link
q.Link = p
xfol(ctxt, q.Link, last)
p = q.Link
if p.Mark != 0 {
return
}
goto loop
/* */
}
}
q = ctxt.Arch.Prg()
q.As = AJMP
q.Lineno = p.Lineno
q.To.Type_ = D_BRANCH
q.To.Offset = p.Pc
q.Pcond = p
p = q
}
/* emit p */
p.Mark = 1
(*last).Link = p
*last = p
a = int(p.As)
/* continue loop with what comes after p */
if nofollow(a) != 0 {
return
//.........这里部分代码省略.........
示例9: 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 autoffset int32
var deltasp int32
var a int
var pcsize int
var textstksiz int64
var textarg int64
if ctxt.Tlsg == nil {
ctxt.Tlsg = liblink.Linklookup(ctxt, "runtime.tlsg", 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)
}
if ctxt.Headtype == liblink.Hplan9 && ctxt.Plan9privates == nil {
ctxt.Plan9privates = liblink.Linklookup(ctxt, "_privates", 0)
}
ctxt.Cursym = cursym
if cursym.Text == nil || cursym.Text.Link == nil {
return
}
p = cursym.Text
parsetextconst(p.To.Offset, &textstksiz, &textarg)
autoffset = int32(textstksiz)
if autoffset < 0 {
autoffset = 0
}
cursym.Args = int32(p.To.Offset >> 32)
cursym.Locals = int32(textstksiz)
if autoffset < liblink.StackSmall && !(p.From.Scale&liblink.NOSPLIT != 0) {
for q = p; q != nil; q = q.Link {
if q.As == ACALL {
goto noleaf
}
if (q.As == ADUFFCOPY || q.As == ADUFFZERO) && autoffset >= liblink.StackSmall-8 {
goto noleaf
}
}
p.From.Scale |= liblink.NOSPLIT
noleaf:
}
q = nil
if !(p.From.Scale&liblink.NOSPLIT != 0) || (p.From.Scale&liblink.WRAPPER != 0) {
p = liblink.Appendp(ctxt, p)
p = load_g_cx(ctxt, p) // load g into CX
}
if !(cursym.Text.From.Scale&liblink.NOSPLIT != 0) {
p = stacksplit(ctxt, p, autoffset, int32(textarg), bool2int(!(cursym.Text.From.Scale&liblink.NEEDCTXT != 0)), &q) // emit split check
}
if autoffset != 0 {
if autoffset%int32(ctxt.Arch.Regsize) != 0 {
ctxt.Diag("unaligned stack size %d", autoffset)
}
p = liblink.Appendp(ctxt, p)
p.As = AADJSP
p.From.Type_ = D_CONST
p.From.Offset = int64(autoffset)
p.Spadj = autoffset
} else {
// zero-byte stack adjustment.
// Insert a fake non-zero adjustment so that stkcheck can
// recognize the end of the stack-splitting prolog.
p = liblink.Appendp(ctxt, p)
p.As = ANOP
p.Spadj = int32(-ctxt.Arch.Ptrsize)
p = liblink.Appendp(ctxt, p)
p.As = ANOP
p.Spadj = int32(ctxt.Arch.Ptrsize)
}
if q != nil {
q.Pcond = p
}
deltasp = autoffset
if cursym.Text.From.Scale&liblink.WRAPPER != 0 {
// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
//
// MOVQ g_panic(CX), BX
// TESTQ BX, BX
// JEQ end
// LEAQ (autoffset+8)(SP), DI
//.........这里部分代码省略.........