本文整理汇总了Golang中rsc/io/tmp/slowgc/liblink.Prog.Spadj方法的典型用法代码示例。如果您正苦于以下问题：Golang Prog.Spadj方法的具体用法？Golang Prog.Spadj怎么用？Golang Prog.Spadj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.Spadj方法的4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: addstacksplit
//.........这里部分代码省略.........
}
}
if !(autosize != 0) && !(cursym.Text.Mark&LEAF != 0) {
if ctxt.Debugvlog != 0 {
fmt.Fprintf(ctxt.Bso, "save suppressed in: %s\n", cursym.Name)
liblink.Bflush(ctxt.Bso)
}
cursym.Text.Mark |= LEAF
}
if cursym.Text.Mark&LEAF != 0 {
cursym.Leaf = 1
if !(autosize != 0) {
break
}
}
if !(p.Reg&liblink.NOSPLIT != 0) {
p = stacksplit(ctxt, p, autosize, bool2int(!(cursym.Text.Reg&liblink.NEEDCTXT != 0))) // emit split check
}
// MOVW.W R14,$-autosize(SP)
p = liblink.Appendp(ctxt, p)
p.As = AMOVW
p.Scond |= C_WBIT
p.From.Type_ = D_REG
p.From.Reg = REGLINK
p.To.Type_ = D_OREG
p.To.Offset = int64(-autosize)
p.To.Reg = REGSP
p.Spadj = autosize
if cursym.Text.Reg&liblink.WRAPPER != 0 {
// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
//
// MOVW g_panic(g), R1
// CMP $0, R1
// B.EQ end
// MOVW panic_argp(R1), R2
// ADD $(autosize+4), R13, R3
// CMP R2, R3
// B.NE end
// ADD $4, R13, R4
// MOVW R4, panic_argp(R1)
// end:
// NOP
//
// The NOP is needed to give the jumps somewhere to land.
// It is a liblink NOP, not an ARM NOP: it encodes to 0 instruction bytes.
p = liblink.Appendp(ctxt, p)
p.As = AMOVW
p.From.Type_ = D_OREG
p.From.Reg = REGG
p.From.Offset = 4 * int64(ctxt.Arch.Ptrsize) // G.panic
p.To.Type_ = D_REG
p.To.Reg = 1
p = liblink.Appendp(ctxt, p)
p.As = ACMP
p.From.Type_ = D_CONST
p.From.Offset = 0示例2: 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
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
autoffset = int32(p.To.Offset)
if autoffset < 0 {
autoffset = 0
}
cursym.Locals = autoffset
cursym.Args = p.To.Offset2
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, bool2int(!(cursym.Text.From.Scale&liblink.NEEDCTXT != 0)), &q) // emit split check
}
if autoffset != 0 {
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
//
// MOVL g_panic(CX), BX
// TESTL BX, BX
// JEQ end
// LEAL (autoffset+4)(SP), DI
// CMPL panic_argp(BX), DI
// JNE end
// MOVL SP, panic_argp(BX)
// end:
// NOP
//
// The NOP is needed to give the jumps somewhere to land.
// It is a liblink NOP, not an x86 NOP: it encodes to 0 instruction bytes.
p = liblink.Appendp(ctxt, p)
p.As = AMOVL
p.From.Type_ = D_INDIR + D_CX
p.From.Offset = 4 * int64(ctxt.Arch.Ptrsize) // G.panic
p.To.Type_ = D_BX
p = liblink.Appendp(ctxt, p)
p.As = ATESTL
p.From.Type_ = D_BX
p.To.Type_ = D_BX
p = liblink.Appendp(ctxt, p)
p.As = AJEQ
//.........这里部分代码省略.........
示例3: addstacksplit
//.........这里部分代码省略.........
switch o {
case ATEXT:
mov = AMOVD
aoffset = 0
autosize = int32(textstksiz + 8)
if (p.Mark&LEAF != 0) && autosize <= 8 {
autosize = 0
} else if autosize&4 != 0 {
autosize += 4
}
p.To.Offset = int64(uint64(p.To.Offset)&(0xffffffff<<32) | uint64(uint32(autosize-8)))
if !(p.Reg&liblink.NOSPLIT != 0) {
p = stacksplit(ctxt, p, autosize, bool2int(!(cursym.Text.Reg&liblink.NEEDCTXT != 0))) // emit split check
}
q = p
if autosize != 0 {
/* use MOVDU to adjust R1 when saving R31, if autosize is small */
if !(cursym.Text.Mark&LEAF != 0) && autosize >= -BIG && autosize <= BIG {
mov = AMOVDU
aoffset = int(-autosize)
} else {
q = liblink.Appendp(ctxt, p)
q.As = AADD
q.Lineno = p.Lineno
q.From.Type_ = D_CONST
q.From.Offset = int64(-autosize)
q.To.Type_ = D_REG
q.To.Reg = REGSP
q.Spadj = +autosize
}
} else if !(cursym.Text.Mark&LEAF != 0) {
if ctxt.Debugvlog != 0 {
fmt.Fprintf(ctxt.Bso, "save suppressed in: %s\n", cursym.Name)
liblink.Bflush(ctxt.Bso)
}
cursym.Text.Mark |= LEAF
}
if cursym.Text.Mark&LEAF != 0 {
cursym.Leaf = 1
break
}
q = liblink.Appendp(ctxt, q)
q.As = AMOVD
q.Lineno = p.Lineno
q.From.Type_ = D_SPR
q.From.Offset = D_LR
q.To.Type_ = D_REG
q.To.Reg = REGTMP
q = liblink.Appendp(ctxt, q)
q.As = int16(mov)
q.Lineno = p.Lineno
q.From.Type_ = D_REG
q.From.Reg = REGTMP
q.To.Type_ = D_OREG
q.To.Offset = int64(aoffset)
q.To.Reg = REGSP
if q.As == AMOVDU {示例4: 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.........