Add gops agentv0.10.2-dev

1 files changed, 190 insertions, 0 deletions

diff --git a/vendor/github.com/google/gops/internal/obj/data.go b/vendor/github.com/google/gops/internal/obj/data.go
new file mode 100644
index 00000000..0ccb053f
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/obj/data.go
@@ -0,0 +1,190 @@
+// Derived from Inferno utils/6l/obj.c and utils/6l/span.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/obj.c
+// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/span.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package obj
+
+import (
+	"log"
+	"math"
+)
+
+// Grow increases the length of s.P to lsiz.
+func (s *LSym) Grow(lsiz int64) {
+	siz := int(lsiz)
+	if int64(siz) != lsiz {
+		log.Fatalf("LSym.Grow size %d too long", lsiz)
+	}
+	if len(s.P) >= siz {
+		return
+	}
+	// TODO(dfc) append cap-len at once, rather than
+	// one byte at a time.
+	for cap(s.P) < siz {
+		s.P = append(s.P[:cap(s.P)], 0)
+	}
+	s.P = s.P[:siz]
+}
+
+// GrowCap increases the capacity of s.P to c.
+func (s *LSym) GrowCap(c int64) {
+	if int64(cap(s.P)) >= c {
+		return
+	}
+	if s.P == nil {
+		s.P = make([]byte, 0, c)
+		return
+	}
+	b := make([]byte, len(s.P), c)
+	copy(b, s.P)
+	s.P = b
+}
+
+// prepwrite prepares to write data of size siz into s at offset off.
+func (s *LSym) prepwrite(ctxt *Link, off int64, siz int) {
+	if off < 0 || siz < 0 || off >= 1<<30 {
+		log.Fatalf("prepwrite: bad off=%d siz=%d", off, siz)
+	}
+	if s.Type == SBSS || s.Type == STLSBSS {
+		ctxt.Diag("cannot supply data for BSS var")
+	}
+	l := off + int64(siz)
+	s.Grow(l)
+	if l > s.Size {
+		s.Size = l
+	}
+}
+
+// WriteFloat32 writes f into s at offset off.
+func (s *LSym) WriteFloat32(ctxt *Link, off int64, f float32) {
+	s.prepwrite(ctxt, off, 4)
+	ctxt.Arch.ByteOrder.PutUint32(s.P[off:], math.Float32bits(f))
+}
+
+// WriteFloat64 writes f into s at offset off.
+func (s *LSym) WriteFloat64(ctxt *Link, off int64, f float64) {
+	s.prepwrite(ctxt, off, 8)
+	ctxt.Arch.ByteOrder.PutUint64(s.P[off:], math.Float64bits(f))
+}
+
+// WriteInt writes an integer i of size siz into s at offset off.
+func (s *LSym) WriteInt(ctxt *Link, off int64, siz int, i int64) {
+	s.prepwrite(ctxt, off, siz)
+	switch siz {
+	default:
+		ctxt.Diag("WriteInt: bad integer size: %d", siz)
+	case 1:
+		s.P[off] = byte(i)
+	case 2:
+		ctxt.Arch.ByteOrder.PutUint16(s.P[off:], uint16(i))
+	case 4:
+		ctxt.Arch.ByteOrder.PutUint32(s.P[off:], uint32(i))
+	case 8:
+		ctxt.Arch.ByteOrder.PutUint64(s.P[off:], uint64(i))
+	}
+}
+
+// WriteAddr writes an address of size siz into s at offset off.
+// rsym and roff specify the relocation for the address.
+func (s *LSym) WriteAddr(ctxt *Link, off int64, siz int, rsym *LSym, roff int64) {
+	if siz != ctxt.Arch.PtrSize {
+		ctxt.Diag("WriteAddr: bad address size %d in %s", siz, s.Name)
+	}
+	s.prepwrite(ctxt, off, siz)
+	r := Addrel(s)
+	r.Off = int32(off)
+	if int64(r.Off) != off {
+		ctxt.Diag("WriteAddr: off overflow %d in %s", off, s.Name)
+	}
+	r.Siz = uint8(siz)
+	r.Sym = rsym
+	r.Type = R_ADDR
+	r.Add = roff
+}
+
+// WriteOff writes a 4 byte offset to rsym+roff into s at offset off.
+// After linking the 4 bytes stored at s+off will be
+// rsym+roff-(start of section that s is in).
+func (s *LSym) WriteOff(ctxt *Link, off int64, rsym *LSym, roff int64) {
+	s.prepwrite(ctxt, off, 4)
+	r := Addrel(s)
+	r.Off = int32(off)
+	if int64(r.Off) != off {
+		ctxt.Diag("WriteOff: off overflow %d in %s", off, s.Name)
+	}
+	r.Siz = 4
+	r.Sym = rsym
+	r.Type = R_ADDROFF
+	r.Add = roff
+}
+
+// WriteString writes a string of size siz into s at offset off.
+func (s *LSym) WriteString(ctxt *Link, off int64, siz int, str string) {
+	if siz < len(str) {
+		ctxt.Diag("WriteString: bad string size: %d < %d", siz, len(str))
+	}
+	s.prepwrite(ctxt, off, siz)
+	copy(s.P[off:off+int64(siz)], str)
+}
+
+// WriteBytes writes a slice of bytes into s at offset off.
+func (s *LSym) WriteBytes(ctxt *Link, off int64, b []byte) int64 {
+	s.prepwrite(ctxt, off, len(b))
+	copy(s.P[off:], b)
+	return off + int64(len(b))
+}
+
+func Addrel(s *LSym) *Reloc {
+	s.R = append(s.R, Reloc{})
+	return &s.R[len(s.R)-1]
+}
+
+func Setuintxx(ctxt *Link, s *LSym, off int64, v uint64, wid int64) int64 {
+	if s.Type == 0 {
+		s.Type = SDATA
+	}
+	if s.Size < off+wid {
+		s.Size = off + wid
+		s.Grow(s.Size)
+	}
+
+	switch wid {
+	case 1:
+		s.P[off] = uint8(v)
+	case 2:
+		ctxt.Arch.ByteOrder.PutUint16(s.P[off:], uint16(v))
+	case 4:
+		ctxt.Arch.ByteOrder.PutUint32(s.P[off:], uint32(v))
+	case 8:
+		ctxt.Arch.ByteOrder.PutUint64(s.P[off:], v)
+	}
+
+	return off + wid
+}