qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-26 17:16:54 -07:00
Code Releases Activity

internal/abi, runtime, cmd: merge funcFlag_* consts into internal/abi

Browse Source 
For #59670.

Change-Id: Ie784ba4dd2701e4f455e1abde4a6bfebee4b1387
Reviewed-on: https://go-review.googlesource.com/c/go/+/485496
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
Auto-Submit: Austin Clements <austin@google.com>
This commit is contained in:
Austin Clements 2023-04-17 15:58:47 -04:00 committed by Gopher Robot
parent 9754521157
commit 2668a190ba
21 changed files with 73 additions and 75 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/cmd/internal/goobj/funcinfo.go
View File

@ -6,7 +6,6 @@ package goobj
import (
"bytes"
"cmd/internal/objabi"
"encoding/binary"
"internal/abi"
)
@ -21,7 +20,7 @@ type FuncInfo struct {
Args uint32
Locals uint32
FuncID abi.FuncID
FuncFlag objabi.FuncFlag
FuncFlag abi.FuncFlag
StartLine int32
File []CUFileIndex
InlTree []InlTreeNode
@ -92,7 +91,7 @@ func (*FuncInfo) ReadLocals(b []byte) uint32 { return binary.LittleEndian.Uint32
func (*FuncInfo) ReadFuncID(b []byte) abi.FuncID { return abi.FuncID(b[8]) }
func (*FuncInfo) ReadFuncFlag(b []byte) objabi.FuncFlag { return objabi.FuncFlag(b[9]) }
func (*FuncInfo) ReadFuncFlag(b []byte) abi.FuncFlag { return abi.FuncFlag(b[9]) }
func (*FuncInfo) ReadStartLine(b []byte) int32 { return int32(binary.LittleEndian.Uint32(b[12:])) }

5
src/cmd/internal/obj/arm/obj5.go
View File

@ -34,6 +34,7 @@ import (
"cmd/internal/obj"
"cmd/internal/objabi"
"cmd/internal/sys"
"internal/abi"
"internal/buildcfg"
"log"
)
@ -618,8 +619,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
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 f.FuncFlag&abi.FuncFlagSPWrite == 0 {
c.cursym.Func().FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
if !ctxt.IsAsm {

5
src/cmd/internal/obj/arm64/obj7.go
View File

@ -35,6 +35,7 @@ import (
"cmd/internal/objabi"
"cmd/internal/src"
"cmd/internal/sys"
"internal/abi"
"internal/buildcfg"
"log"
"math"
@ -1037,8 +1038,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
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 f.FuncFlag&abi.FuncFlagSPWrite == 0 {
c.cursym.Func().FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
if !ctxt.IsAsm {

4
src/cmd/internal/obj/link.go
View File

@ -478,7 +478,7 @@ type FuncInfo struct {
Locals int32
Align int32
FuncID abi.FuncID
FuncFlag objabi.FuncFlag
FuncFlag abi.FuncFlag
StartLine int32
Text *Prog
Autot map[*LSym]struct{}
@ -912,7 +912,7 @@ func (a Attribute) String() string {
// TextAttrString formats the symbol attributes for printing in as part of a TEXT prog.
func (s *LSym) TextAttrString() string {
attr := s.Attribute.String()
if s.Func().FuncFlag&objabi.FuncFlag_TOPFRAME != 0 {
if s.Func().FuncFlag&abi.FuncFlagTopFrame != 0 {
if attr != "" {
attr += "|"
}

5
src/cmd/internal/obj/loong64/obj.go
View File

@ -8,6 +8,7 @@ import (
"cmd/internal/obj"
"cmd/internal/objabi"
"cmd/internal/sys"
"internal/abi"
"log"
"math"
)
@ -477,8 +478,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
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 f.FuncFlag&abi.FuncFlagSPWrite == 0 {
c.cursym.Func().FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
if !ctxt.IsAsm {

5
src/cmd/internal/obj/mips/obj0.go
View File

@ -35,6 +35,7 @@ import (
"cmd/internal/sys"
"encoding/binary"
"fmt"
"internal/abi"
"log"
"math"
)
@ -560,8 +561,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
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 f.FuncFlag&abi.FuncFlagSPWrite == 0 {
c.cursym.Func().FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
if !ctxt.IsAsm {

5
src/cmd/internal/obj/objfile.go
View File

@ -15,6 +15,7 @@ import (
"cmd/internal/sys"
"encoding/binary"
"fmt"
"internal/abi"
"io"
"log"
"os"
@ -841,10 +842,10 @@ func (ctxt *Link) writeSymDebugNamed(s *LSym, name string) {
if s.NoSplit() {
fmt.Fprintf(ctxt.Bso, "nosplit ")
}
if s.Func() != nil && s.Func().FuncFlag&objabi.FuncFlag_TOPFRAME != 0 {
if s.Func() != nil && s.Func().FuncFlag&abi.FuncFlagTopFrame != 0 {
fmt.Fprintf(ctxt.Bso, "topframe ")
}
if s.Func() != nil && s.Func().FuncFlag&objabi.FuncFlag_ASM != 0 {
if s.Func() != nil && s.Func().FuncFlag&abi.FuncFlagAsm != 0 {
fmt.Fprintf(ctxt.Bso, "asm ")
}
fmt.Fprintf(ctxt.Bso, "size=%d", s.Size)

9
src/cmd/internal/obj/plist.go
View File

@ -8,6 +8,7 @@ import (
"cmd/internal/objabi"
"cmd/internal/src"
"fmt"
"internal/abi"
"strings"
)
@ -204,13 +205,13 @@ func (ctxt *Link) InitTextSym(s *LSym, flag int, start src.XPos) {
ctxt.dwarfSym(s)
}
func (ctxt *Link) toFuncFlag(flag int) objabi.FuncFlag {
var out objabi.FuncFlag
func (ctxt *Link) toFuncFlag(flag int) abi.FuncFlag {
var out abi.FuncFlag
if flag&TOPFRAME != 0 {
out |= objabi.FuncFlag_TOPFRAME
out |= abi.FuncFlagTopFrame
}
if ctxt.IsAsm {
out |= objabi.FuncFlag_ASM
out |= abi.FuncFlagAsm
}
return out
}

5
src/cmd/internal/obj/ppc64/obj9.go
View File

@ -34,6 +34,7 @@ import (
"cmd/internal/objabi"
"cmd/internal/src"
"cmd/internal/sys"
"internal/abi"
"log"
)
@ -1004,8 +1005,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 && p.As != ACMPU {
f := c.cursym.Func()
if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE
if f.FuncFlag&abi.FuncFlagSPWrite == 0 {
c.cursym.Func().FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
if !ctxt.IsAsm {

5
src/cmd/internal/obj/riscv/obj.go
View File

@ -25,6 +25,7 @@ import (
"cmd/internal/objabi"
"cmd/internal/sys"
"fmt"
"internal/abi"
"log"
"math/bits"
)
@ -592,8 +593,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {
f := cursym.Func()
if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
f.FuncFlag |= objabi.FuncFlag_SPWRITE
if f.FuncFlag&abi.FuncFlagSPWrite == 0 {
f.FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s %v\n", cursym.Name, p)
if !ctxt.IsAsm {

5
src/cmd/internal/obj/s390x/objz.go
View File

@ -33,6 +33,7 @@ import (
"cmd/internal/obj"
"cmd/internal/objabi"
"cmd/internal/sys"
"internal/abi"
"log"
"math"
)
@ -568,8 +569,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
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 f.FuncFlag&abi.FuncFlagSPWrite == 0 {
c.cursym.Func().FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s\n", c.cursym.Name)
if !ctxt.IsAsm {

5
src/cmd/internal/obj/x86/obj6.go
View File

@ -35,6 +35,7 @@ import (
"cmd/internal/objabi"
"cmd/internal/src"
"cmd/internal/sys"
"internal/abi"
"log"
"math"
"path"
@ -867,8 +868,8 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
default:
if p.To.Type == obj.TYPE_REG && p.To.Reg == REG_SP && p.As != ACMPL && p.As != ACMPQ {
f := cursym.Func()
if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
f.FuncFlag |= objabi.FuncFlag_SPWRITE
if f.FuncFlag&abi.FuncFlagSPWrite == 0 {
f.FuncFlag |= abi.FuncFlagSPWrite
if ctxt.Debugvlog || !ctxt.IsAsm {
ctxt.Logf("auto-SPWRITE: %s %v\n", cursym.Name, p)
if !ctxt.IsAsm {

10
src/cmd/internal/objabi/funcid.go
View File

@ -9,16 +9,6 @@ import (
"strings"
)
// A FuncFlag records bits about a function, passed to the runtime.
type FuncFlag uint8
// Note: This list must match the list in runtime/symtab.go.
const (
FuncFlag_TOPFRAME = 1 << iota
FuncFlag_SPWRITE
FuncFlag_ASM
)
var funcIDs = map[string]abi.FuncID{
"abort": abi.FuncID_abort,
"asmcgocall": abi.FuncID_asmcgocall,

2
src/cmd/link/internal/ld/pcln.go
View File

@ -706,7 +706,7 @@ func writeFuncs(ctxt *Link, sb *loader.SymbolBuilder, funcs []loader.Sym, inlSym
off = sb.SetUint8(ctxt.Arch, off, uint8(funcID))
// flag uint8
var flag objabi.FuncFlag
var flag abi.FuncFlag
if fi.Valid() {
flag = fi.FuncFlag()
}

4
src/cmd/link/internal/loader/loader.go
View File

@ -1995,7 +1995,7 @@ func (fi *FuncInfo) FuncID() abi.FuncID {
return (*goobj.FuncInfo)(nil).ReadFuncID(fi.data)
}
func (fi *FuncInfo) FuncFlag() objabi.FuncFlag {
func (fi *FuncInfo) FuncFlag() abi.FuncFlag {
return (*goobj.FuncInfo)(nil).ReadFuncFlag(fi.data)
}
@ -2027,7 +2027,7 @@ func (fi *FuncInfo) File(k int) goobj.CUFileIndex {
// is an entry point, meaning that unwinders should stop when they hit
// this function.
func (fi *FuncInfo) TopFrame() bool {
return (fi.FuncFlag() & objabi.FuncFlag_TOPFRAME) != 0
return (fi.FuncFlag() & abi.FuncFlagTopFrame) != 0
}
type InlTreeNode struct {

25
src/internal/abi/symtab.go
View File

@ -4,6 +4,31 @@
package abi
// A FuncFlag records bits about a function, passed to the runtime.
type FuncFlag uint8
const (
// FuncFlagTopFrame indicates a function that appears at the top of its stack.
// The traceback routine stop at such a function and consider that a
// successful, complete traversal of the stack.
// Examples of TopFrame functions include goexit, which appears
// at the top of a user goroutine stack, and mstart, which appears
// at the top of a system goroutine stack.
FuncFlagTopFrame FuncFlag = 1 << iota
// FuncFlagSPWrite indicates a function that writes an arbitrary value to SP
// (any write other than adding or subtracting a constant amount).
// The traceback routines cannot encode such changes into the
// pcsp tables, so the function traceback cannot safely unwind past
// SPWrite functions. Stopping at an SPWrite function is considered
// to be an incomplete unwinding of the stack. In certain contexts
// (in particular garbage collector stack scans) that is a fatal error.
FuncFlagSPWrite
// FuncFlagAsm indicates that a function was implemented in assembly.
FuncFlagAsm
)
// A FuncID identifies particular functions that need to be treated
// specially by the runtime.
// Note that in some situations involving plugins, there may be multiple

2
src/runtime/preempt.go
View File

@ -403,7 +403,7 @@ func isAsyncSafePoint(gp *g, pc, sp, lr uintptr) (bool, uintptr) {
// functions (except at calls).
return false, 0
}
if fd := funcdata(f, _FUNCDATA_LocalsPointerMaps); fd == nil || f.flag&funcFlag_ASM != 0 {
if fd := funcdata(f, _FUNCDATA_LocalsPointerMaps); fd == nil || f.flag&abi.FuncFlagAsm != 0 {
// This is assembly code. Don't assume it's well-formed.
// TODO: Empirically we still need the fd == nil check. Why?
//

2
src/runtime/proc.go
View File

@ -3573,7 +3573,7 @@ func preemptPark(gp *g) {
if !f.valid() {
throw("preempt at unknown pc")
}
if f.flag&funcFlag_SPWRITE != 0 {
if f.flag&abi.FuncFlagSPWrite != 0 {
println("runtime: unexpected SPWRITE function", funcname(f), "in async preempt")
throw("preempt SPWRITE")
}

2
src/runtime/runtime2.go
View File

@ -903,7 +903,7 @@ type _func struct {
cuOffset uint32 // runtime.cutab offset of this function's CU
startLine int32 // line number of start of function (func keyword/TEXT directive)
funcID abi.FuncID // set for certain special runtime functions
flag funcFlag
flag abi.FuncFlag
_ [1]byte // pad
nfuncdata uint8 // must be last, must end on a uint32-aligned boundary

26
src/runtime/symtab.go
View File

@ -335,32 +335,6 @@ const (
_PCDATA_RestartAtEntry = -5
)
// A FuncFlag holds bits about a function.
// This list must match the list in cmd/internal/objabi/funcid.go.
type funcFlag uint8
const (
// TOPFRAME indicates a function that appears at the top of its stack.
// The traceback routine stop at such a function and consider that a
// successful, complete traversal of the stack.
// Examples of TOPFRAME functions include goexit, which appears
// at the top of a user goroutine stack, and mstart, which appears
// at the top of a system goroutine stack.
funcFlag_TOPFRAME funcFlag = 1 << iota
// SPWRITE indicates a function that writes an arbitrary value to SP
// (any write other than adding or subtracting a constant amount).
// The traceback routines cannot encode such changes into the
// pcsp tables, so the function traceback cannot safely unwind past
// SPWRITE functions. Stopping at an SPWRITE function is considered
// to be an incomplete unwinding of the stack. In certain contexts
// (in particular garbage collector stack scans) that is a fatal error.
funcFlag_SPWRITE
// ASM indicates that a function was implemented in assembly.
funcFlag_ASM
)
// pcHeader holds data used by the pclntab lookups.
type pcHeader struct {
magic uint32 // 0xFFFFFFF1

12
src/runtime/traceback.go
View File

@ -270,13 +270,13 @@ func (u *unwinder) resolveInternal(innermost, isSyscall bool) {
// but it carefully arranges that during the transition BOTH stacks
// have cgocallback frame valid for unwinding through.
// So we don't need to exclude it with the other SP-writing functions.
flag &^= funcFlag_SPWRITE
flag &^= abi.FuncFlagSPWrite
}
if isSyscall {
// Some Syscall functions write to SP, but they do so only after
// saving the entry PC/SP using entersyscall.
// Since we are using the entry PC/SP, the later SP write doesn't matter.
flag &^= funcFlag_SPWRITE
flag &^= abi.FuncFlagSPWrite
}
// Found an actual function.
@ -315,14 +315,14 @@ func (u *unwinder) resolveInternal(innermost, isSyscall bool) {
// systemstack doesn't have an SP delta (the CALL
// instruction opens the frame), therefore no way
// to check.
flag &^= funcFlag_SPWRITE
flag &^= abi.FuncFlagSPWrite
break
}
gp = gp.m.curg
u.g.set(gp)
frame.sp = gp.sched.sp
u.cgoCtxt = len(gp.cgoCtxt) - 1
flag &^= funcFlag_SPWRITE
flag &^= abi.FuncFlagSPWrite
}
}
frame.fp = frame.sp + uintptr(funcspdelta(f, frame.pc, &u.cache))
@ -333,10 +333,10 @@ func (u *unwinder) resolveInternal(innermost, isSyscall bool) {
}
// Derive link register.
if flag&funcFlag_TOPFRAME != 0 {
if flag&abi.FuncFlagTopFrame != 0 {
// This function marks the top of the stack. Stop the traceback.
frame.lr = 0
} else if flag&funcFlag_SPWRITE != 0 {
} else if flag&abi.FuncFlagSPWrite != 0 {
// The function we are in does a write to SP that we don't know
// how to encode in the spdelta table. Examples include context
// switch routines like runtime.gogo but also any code that switches