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cmd/internal/obj: refactor ATEXT symbol initialization

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This makes the core Flushplist loop clearer.

We may also want to move the Sym initialization
much earlier in the compiler (see discussion on
CL 40254), for which this paves the way.

While we're here, eliminate package log in favor of ctxt.Diag.

Passes toolstash-check -all.

Updates #15756

Change-Id: Ieaf848d196764a5aa82578b689af7bc6638c385a
Reviewed-on: https://go-review.googlesource.com/40313
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
This commit is contained in:
Josh Bleecher Snyder 2017-04-10 16:57:06 -07:00
parent 6c6f455f88
commit e367ba9eae
3 changed files with 38 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/cmd/asm/internal/asm/asm.go
View File

@ -176,6 +176,7 @@ func (p *Parser) asmText(word string, operands [][]lex.Token) {
},
}
prog.To.Val = int32(argSize)
p.ctxt.InitTextSym(prog)
p.append(prog, "", true)
}

2
src/cmd/compile/internal/gc/gsubr.go
View File

@ -185,6 +185,8 @@ func (pp *Progs) settext(fn *Node) {
}
}
Ctxt.InitTextSym(ptxt)
pp.Text = ptxt
}

61
src/cmd/internal/obj/plist.go
View File

@ -6,7 +6,6 @@ package obj
import (
"fmt"
"log"
"strings"
)
@ -42,33 +41,9 @@ func Flushplist(ctxt *Link, plist *Plist, newprog ProgAlloc) {
if s == nil {
// func _() { }
curtext = nil
continue
}
if s.FuncInfo == nil {
s.FuncInfo = new(FuncInfo)
}
if s.Text != nil {
log.Fatalf("duplicate TEXT for %s", s.Name)
}
if s.OnList() {
log.Fatalf("symbol %s listed multiple times", s.Name)
}
s.Set(AttrOnList, true)
text = append(text, s)
flag := int(p.From3Offset())
if flag&DUPOK != 0 {
s.Set(AttrDuplicateOK, true)
}
if flag&NOSPLIT != 0 {
s.Set(AttrNoSplit, true)
}
if flag&REFLECTMETHOD != 0 {
s.Set(AttrReflectMethod, true)
}
s.Type = STEXT
s.Text = p
etext = p
curtext = s
continue
@ -137,13 +112,47 @@ func Flushplist(ctxt *Link, plist *Plist, newprog ProgAlloc) {
ctxt.Text = append(ctxt.Text, text...)
}
func (ctxt *Link) InitTextSym(p *Prog) {
if p.As != ATEXT {
ctxt.Diag("InitTextSym non-ATEXT: %v", p)
}
s := p.From.Sym
if s == nil {
// func _() { }
return
}
if s.FuncInfo != nil {
ctxt.Diag("InitTextSym double init for %s", s.Name)
}
s.FuncInfo = new(FuncInfo)
if s.Text != nil {
ctxt.Diag("duplicate TEXT for %s", s.Name)
}
if s.OnList() {
ctxt.Diag("symbol %s listed multiple times", s.Name)
}
s.Set(AttrOnList, true)
flag := int(p.From3Offset())
if flag&DUPOK != 0 {
s.Set(AttrDuplicateOK, true)
}
if flag&NOSPLIT != 0 {
s.Set(AttrNoSplit, true)
}
if flag&REFLECTMETHOD != 0 {
s.Set(AttrReflectMethod, true)
}
s.Type = STEXT
s.Text = p
}
func (ctxt *Link) Globl(s *LSym, size int64, flag int) {
if s.SeenGlobl() {
fmt.Printf("duplicate %v\n", s)
}
s.Set(AttrSeenGlobl, true)
if s.OnList() {
log.Fatalf("symbol %s listed multiple times", s.Name)
ctxt.Diag("symbol %s listed multiple times", s.Name)
}
s.Set(AttrOnList, true)
ctxt.Data = append(ctxt.Data, s)